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1. 

   Indigenous High Forests in the Transvaal with Special Reference to Inventory and Monitoring Systems

   Item type: Journal Article • Journal: South African Forestry Journal • Authors: G.R. von dem Bussche --- Conservation Forestry Department of Water Affairs and Forestry, South Africa

   The indigenous forests in the Transvaal comprise a total area of 35 385 ha, of which 18 088 ha or 51% are situated on State forest land. The forests are found mainly along the Drakensberg escarpment and, to a lesser...

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2. 

   Stimulation of Bud Production in Eucalyptus globulus by Paclobutrazol Application

   Item type: Journal Article • Journal: South African Forestry Journal • Authors: S. Hetherington --- , K.M. Jones --- Department of Primary Industries New Town Research Laboratories, Australia T.B. Koen --- Department of Primary Industries New Town Research Laboratories, Australia

   Trunk injection of paclobutrazol (Clipper) significantly increased the bud crop on 7-year-old Eucalyptus globulus (Labill.) seed orchard trees, within one year of application. This is the first reported stimulation of reproduction to occur, with eucalypts, in the season of application...

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3. 

   Seasonal Fluctuations and Diversity of Bark and Wood-boring Beetles in Lowland Forest: Implications for management Practices

   Item type: Journal Article • Journal: South African Forestry Journal • Authors: S.S. Madoffe --- Department of Forest Biology, A. Bakke --- , Ås; Norway

   The phenology and diversity of wood-living beetles attacking Cedrela mexicana, Khaya nyasica and Milicia excelsa were observed for one year with weekly window-flight-trap collections. A total of 150 species (10 known to be common pests of timber) were collected, most...

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4. Growth patterns of Italian ryegrass cultivars established in different seasons

   Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D.C.W. Goodenough --- Department of Agriculture (Natal Region), C.I. Macdonald --- Department of Agriculture (Natal Region), A.R.J. Morrison --- Department of Agriculture (Natal Region),

   A comparison is made between various Italian ryegrass cultivars established under irrigation on a well‐drained upland site during the traditional autumn months, with plantings of the same cultivars at other times of the year.

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5. Produksie en kwaliteit van ‘n aantal grasspesies in die Combretum‐veld van noord‐transvaal

   Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: P.A. Pieterse --- Departement Plantproduksie, Fakulteit Landbouwetenskappe, J.O. Grunow --- Departement Plantproduksie, Fakulteit Landbouwetenskappe,

   Die produksie en kwaliteit van vyf spesies (Themeda triandra, Heteropogon contortus, Digitaria eriantha var. pentzii, Schmidtia pappophoroides en Eragrostis rigidior) is by verskillende frekwensies van ontblaring op ontbosde en onontbosde bosveld gemeet. In die daaropvolgende jaar is intensiteit bygebring met...

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6. Yield and morphological responses of a forage sorghum to mefluidide

   Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: D I Bransby --- , A G Matches --- , USA C R Richardson --- , USA

   Due to rapid growth, stem build‐up in forage sorghum crops often leads to considerable wastage by animals and consequent loss of production. In this study the potential of the chemical plant growth regulator, mefluidide, for modifying the morphology of forage...

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7. The influence of nitrogen fertilization, spring burning and height of stubble on hay and seed production of eragrostis curvula ¹

   Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N.F.G. Rethman --- Department of Plant Production, B.H. Beukes --- Department of Agriculture & Water Supply,

   This investigation, conducted over a three‐year period, emphasized the strong effect of nitrogen fertilization on both hay and seed production. The optimum level of nitrogen, for conditions on the Eastern Highveld being 100–150 kg N/ha applied in spring, followed by...

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8. The regrowth of Colophospermum mopane following clearing

   Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.J. Scholes --- Department of Botany, Republicof South Africa

   The recovery of cleared Colophospermum mopane thicket in the eastern Transvaal lowveld, to a level where its effect on grass production is similar to that in the pre‐cleared state, occurs within fourteen years. Based on certain assumptions, the ‘effective duration’...

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9. Towards visual assessment of succulent valley bushveld

   Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G.C. Stuart‐Hill --- Department of Grassland Science, Republic of South Africa

   Visual vegetation assessment was tested for repeatability and accuracy and compared with an objective survey technique for time and cost efficiency. Eighteen operators first inspected a range of sites where ecological status was known. Using these for reference, they then...

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10. Range monitoring in South Africa: A broad perspective

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: A.J. Aucamp --- , Republic of South Africa J.E. Danckwerts --- Department of Plant Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa

    Range monitoring is defined, in the context of this paper, as regular surveillance to establish whether properties of the range are changing. The objective of such monitoring is therefore to establish whether temporal changes are taking place in response to...

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11. Forage potential of Japanese radish (Raphanus sativus) as influenced by planting date and cultivar choice

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: A. Verschoor --- Division of Grassland Science, Department of Plant Production, Republic of South Africa N.F.G. Rethman --- Division of Grassland Science, Department of Plant Production, Republic of South Africa

    Japanese radish shows potential as a winter forage. If planted early (Dec/Jan.), high temperatures can damage seedlings. With late plantings (Mar./Apr.), the growing season can become a limiting factor. A study to establish the optimum planting date for warmer areas...

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12. 

    Evidence of a germination inhibitor in senescent soybean pod walls

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Chapman --- , Republic of South Africa

    Water based pod extracts of the pod wall material of four soybean cultivars were found to reduce the germination rate of mustard (Sinapis alba L.) seeds. Highly significant differences were also observed in this respect between the different pod extracts.

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13. 

    Influence of temperature and daylength on the phenological development of annual Medicago species with particular reference to M. truncatula, cv. Jemalong

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.M. van Heerden --- Department of Agriculture,

    In a glasshouse and two growth-room trials, carried out in conjunction with 12 serial plantings in pots in the open, it was found that the phenological development of Medicago truncatula, M. tornata, M. aculeata, M. polymorpha, M. scutellata and M...

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14. 

    Invloed van bewerking en besproeiing op die verwering van gneis in die Augrabies-gebied

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.F. Eloff --- Departement van Landbou en Watervoorsiening, W. F.A. Kirsten --- Departement van Landbou en Watervoorsiening, B.L. Plath --- Departement van Landbou en Watervoorsiening,

    Fisiese, chemiese en mineralogiese kriteria is gebruik om te bepaal of veranderinge in eienskappe van gronde op gneise, in die Augrabies-gebied, as gevolg van bewerking en besproeiing plaasgevind het. Bewerking en besproeiing van die halfverweerde gneise het die verweringsproses versnel...

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15. 

    The influence of photoperiod and temperature on the pre-flowering phase length of eleven soybean cultivars in northern Natal

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Chapman --- Agricultural Research Station,

    The effect of photoperiod and temperature on the pre-flowering phase length of 11 soybean cultivars was studied. Heat units (10 to 30°C) and night hours (sunset to sunrise) were used as measures of temperature and photoperiod respectively. Highly significant negative...

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16. 

    Evaluation of five Pecan cultivars [Carya illinoensis (Wang.) R. Koch] for yield, precocity, alternate bearing, leaf:nut ratio and length of growing season in the Transvaal middleveld

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T.K. Haulik --- , Republic of South Africa L.C. Holtzhausen --- Department of Horticultural Science, Republic of South Africa

    The average yield of five pecan cultivars over a 22-year period was 25, 1 kg per tree per annum. The extrapolated average yield for the last 10 years of bearing was 2 642 kg ha-1, which compares favourably with results...

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17. 

    Factors affecting theaflavin values of black tea in South Africa: A preliminary analysis

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.J. van Lelyveld --- , Republic of South Africa K. de Rooster --- , Republic of South Africa B.L. Smith --- , Republic of South Africa

    The highest theaflavin (TF) contents associated with five tea clones grown in the Eastern Transvaal were encountered in the manufactured tea from ‘MT 12’ followed by ‘SFS 204’, with ‘Veld 35’ and ‘Veld 43’ having the lowest values. TF contents...

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18. 

    Spruitvorming by mielies: 'n Vergelyking van enkelstammige en spruitvormende plante

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.F. Verwey --- Departement Plantproduksie, Republiek van Suid-Afrika P.S. Hammes --- Departement Plantproduksie, Republiek van Suid-Afrika

    Die groei en opbrengs van enkelstammige en meerstammige mielieplante uit dieselfde stand is vergelyk om vas te stel wat die effek van spruitvorming hierop is. Spruitontwikkeling het nie 'n wesentlike invloed op planthoogte en blaaroppervlakte van hoofstamme gehad nie. Spruite...

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19. 

    Effect of liming and parent material on the potassium quantity/intensity relationships of some upland soils of the western Cape

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Wooldridge --- , Republic of South Africa

    Liming and parent material had major effects on the potassium (K) quantity/intensity (Q/l) relationships of a varied group of naturally base-depleted upland soils of the western Cape. Departures from the usual Q/l curve form were observed, the individual curve sections...

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20. 

    Effect of a foliar application of paclobutrazol in autumn on the reproductive development of ‘Songold’ plum

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: O.J. Olivier --- Department of Horticultural Science, Republic of South Africa G. Jacobs --- Department of Horticultural Science, Republic of South Africa D.K. Strydom --- Department of Horticultural Science, Republic of South Africa

    A foliar application of paclobutrazol (1- (4-chlorophenyl) −4,4-dimethyl-2- (1,2,4- triazol-1-yl) pentan-3-ol) at 250 or 500 mg dm−3 a.i. in autumn, or late winter applications of dinitro-o-cresol oil emulsion (DNOC) in water at 3% v/v, increased the percentage of ‘Songold’ plum...

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21. 

    The effect of plant density on the injuriousness of Busseola fusca (Fuller) (Lepidoptera: Noctuidae) in grain sorghum

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. van den Berg --- , Republic of South Africa J. B.J. van Rensburg --- , Republic of South Africa J.H. Giliomee --- Department of Entomology and Nematology, Republic of South Africa

    The influence of five different plant densities on whorl damage, internal damage, tillering and yield of grain sorghum under attack by Busseola fusca was evaluated over two seasons, using artificial infestation of three egg batches (90 eggs) per 5-m row...

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22. 

    Influence of intensive irrigation and cultivation on selected soil properties: Arid southern Namibia

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Verster --- Department of Geography, Republic of South Africa T.H. van Rooyen --- Department of Geography, Republic of South Africa

    The effect of long-term (25 years) intensive irrigation on selected soil properties of the Hardap Irrigation Scheme was determined by comparing soil profiles in irrigated and adjacent non-irrigated areas. The major differences detected between five soil pairs were rubification of...

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23. 

    Bepaling van optimale blom en plantdatums vir koring in die sentrale besproeiingsgebiede van die RSA met behulp van 'n groeimodel

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Departement Landbouweerkunde, Republiek van Suid-Afrika

    Optimale blom- en plantperiodes vir besproeiingskoring is bepaal vir 15 lokaliteite in die sentrale besproeiingsgebiede van die RSA deur gebruik te maak van historiese temperatuurdata en die PUTU koringgroeimodel. Die hoogste gemiddelde opbrengs is gesimuleer met blomperiodes wat oor die...

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24. 

    Reaksie van twee lentekoringkultivars op stikstof- en swaelbemesting in die Swartland. I. Vegetatiewe groei, opname en konsentrasie van stikstof en swael in die vegetatiewe plant

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.P. du Plessis --- , Republiek van Suid-Afrika G.A. Agenbag --- Departement Akkerbou en Weidlng, Republiek van Suid-Afrika

    Die belangrikheid van die korrekte N: S verhouding het die vraag laat ontstaan of 'n wanbelans tussen N en S nie gedeeltelik 'n bydrae tot die swak benuttingsdoeltreffendheid van N by hoë N-bemestings in die Swartland kan lewer nie. 'n...

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25. 

    Reaksie van twee lengtekoringkultivars op stikstof- en swaelbemesting in die Swartland. II. Opbrengs en bakkwaliteit

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.P. du Plessis --- , Republiek van Suid-Afrika G.A. Agenbag --- Departement Akkerbou en Weiding, Republiek van Suid-Afrika

    In die Swartlandkoringproduksiegebied is daar oor die afgelope tien jaar 'n daling in die gemiddelde prote'ieninhoud en bakkwaliteit van koring ondervind, selfs ten spyte van verhoogde stikstofbemesting. Die belangrikheid van die korrekte N: S verhouding het die vraag laat ontstaan...

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26. 

    Quality response of spring wheat cultivars to post-anthesis water stress intensity

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South Africa

    The effect of different intensities of water stress imposed during the first three weeks of grain filling were determined on the protein content, protein composition and bread volume of three spring wheat cultivars. Water stress was induced by watering the...

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27. 

    Evaluation of proline accumulation as an indicator of drought tolerance in spring wheat cultivars

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. D.R. van Heerden --- Department of Botany, Republic of South Africa O.T. de Villiers --- Department of Botany, Republic of South Africa

    The aim of this study was to evaluate proline accumulation as an indicator of drought stress and drought tolerance in spring wheat cultivars (Triticum aestivum L.) grown in the Western Cape. Drought stress was induced in whole plants and leaf...

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28. 

    Amelioration of acidic soil with an ettringitic by-product of waste water treatment

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.V. Fey --- Department of Geological Sciences, South Africa I.R. Tomlinson --- Department of Geological Sciences, South Africa J.P. Willis --- Department of Geological Sciences, South Africa

    Ettringite (Ca12AI14(OH)24(SO)6 52H2O) is the main by-product of a saline water beneficiaron process currently being evaluated by coal-based industries. The study aimed to quantify and explain the benefits of using this alkaline waste to ameliorate acidic soils by comparing its...

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29. 

    The use of acid Polyacrylamide gel electrophoresis to determine the effect of locality of growth on the protein profiles of barley, wheat and honeybush tea

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: O.T. de Villiers --- Department of Botany, South Africa M. Bosman --- Centre for Cereal Research, Department of Agronomy and Pastures, South Africa

    Acid Polyacrylamide gel electrophoresis (A-PAGE) of proteins was used to identify different spring wheat cultivare, barley cultivars and Cyclopia species. Experimental conditions for the extraction of the proteins from single kernels as well as corresponding flour samples are described. Different...

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30. 

    Evaluation of Bt.-Transgenic maize for resistance to the stem borers Busseola fusca (Fuller) and Chilo partellus (Swinhoe) in South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. B.J. Van Rensburg --- , Republic of South Africa

    The gene Cry1Ab derived from the entomopathogenic bacterium Bacillus thuringiensis is currently deployed commercially for control of Pyralid stem borers of maize in the USA. In this study various events of the Bt-gene were evaluated in maize inbred lines and...

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31. 

    Bromus diandrus Roth. control with MON 37532 in spring wheat (Triticum aestivum L.). 1. Time of application and dosage rate

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa R. Crous --- Monsanto SA (Pty) Ltd, Republic of South Africa

    MON 37532 (sulfosulfuron) is a new herbicide for the selective control of grasses and annual broadleaf weeds in wheat (Triticum aestivum L.). In this glasshouse study done in 2-litre pots filled with coarse sand, the product was evaluated for the...

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32. 

    Bromus diandrus Roth. control with MON 37532 in spring wheat (Triticum aestivum L.). 2. Effect of relative weed density and time of spraying

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa R. Crous --- , Republic of South Africa

    Bromus diandrus Roth, is one of the most troublesome weeds in spring wheat crops of the western Cape wheat producing area of the Republic of South Africa and Australia. The selective control of this weed in wheat crops may, in...

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33. 

    Low temperature treatment advances flowering in Clivia miniata (Lindley) Regel

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: C.B. Honiball --- Department of Plant Production and Soil Science, P.J. Robbertse --- Department of Plant Production and Soil Science,

    Clivia miniata plants were exposed to a cold treatment of 7.5–10 °C for 14 days in the dark from 24 April 2000. Compared to the non-cold treated control plants, the cold-treated plants started flowering four weeks earlier resulting in 80%...

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34. 

    Diversity analysis in Ethiopian and some exotic collections of linseed

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. Adugna --- Department of Plant Sciences, South Africa M.T. Labuschagne --- Department of Plant Sciences, South Africa

    Sixty linseed accessions predominantly from Ethiopia were evaluated for 11 characters in a randomised complete block design with three replications under glasshouse conditions at the UFS, during 2000 and 2001. The major objectives were to assess the diversity of the...

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35. 

    Potassium nitrate and urea sprays affect flowering and yields of ‘Tommy Atkins’ (Mangifera indica) mango in Ethiopia

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Yeshitela --- Department of Plant Production and Soil Sciences, South Africa P.J. Robbertse --- Department of Plant Production and Soil Sciences, South Africa P. J.C. Stassen --- Department of Horticulture, South Africa

    The effects of leaf applications of potassium nitrate (KNO3), alone and in combination with urea at different concentrations on flowering, fruit set and fruit quality of Tommy Atkins' mango grown in the rift valley of Ethiopia were evaluated. The trees...

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36. 

    Comparison between methods for estimating sprout damage in wheat

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Barnard --- , South Africa C.S. van Deventer --- Department of Plant Science (Plant Breeding), Faculty of Natural and Agricultural Sciences, South Africa H. Maartens --- Department of Plant Science (Plant Breeding), Faculty of Natural and Agricultural Sciences, South Africa

    Sprouting in wheat is common when rain occurs during harvest. This causes the moisture content of the grain to increase to a level at which germination takes place and α-amylase increases. Various methods can be used to determine α-amylase in...

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37. 

    The effect of MCPA and paclobutrazol on flowering, berry set, biomass production, tuber yield and quality of potato

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Tekalign --- Department of Plant Production and Soil Science, South Africa P.S. Hammes --- Department of Plant Production and Soil Science, South Africa

    The effects of MCPA and paclobutrazol on potato (Solanum tuberosum L.) flowering, berry formation, dry matter production and allocation, tuber yield and quality were investigated under greenhouse and field conditions at the Experimental Farm of the University of Pretoria. Both...

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38. 

    Effect of soil tillage, crop rotation and nitrogen application rates on bread-baking quality of spring wheat (Triticum aestivum L.) in the Swartland wheat producing area of South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.H. Maali --- Department of Agronomy, Republic of South Africa G.A. Agenbag --- Department of Agronomy, Republic of South Africa

    Spring wheat (Triticum aestivum L.) is produced in the wheat producing areas of the Western Cape Province, Republic of South Africa, primarily for bread-baking purposes. Milling and baking characteristics are therefore of utmost importance. In a long-term tillage and crop...

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39. 

    Persistence of the pesticidal Bacillus thuringiensis protein expressed in Bt maize plant materials in two soils of the Central Eastern Cape, South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Muchaonyerwa --- Department of Agronomy, South Africa S.M. Waladde --- Department of Zoology, South Africa

    Environmental effects of genetically modified plants are not yet fully understood. Experiments were conducted to determine relative amounts of the bioactive Bt protein in roots, leaves and stems of Bt maize and persistence of the protein in two soil forms...

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40. 

    Relationships between soil buffer capacity and selected soil properties in a resource-poor farming area in the Mpumalanga Province of South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. Jansen van Rensburg --- Department of Plant Production and Soil Science, South Africa A.S. Claassens --- Department of Plant Production and Soil Science, South Africa D.J. Beukes --- , South Africa

    In this study, the soil buffer capacity (soil BC) was measured for 80 topsoil samples of the most dominant soil forms in a small-scale farming area. Soils used in the study ranged from weakly to strongly buffered, with soil BC...

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41. 

    Evaluation of electrical conductivity of the fertiliser solution on growth and flowering of a Cymbidium hybrid

    Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: SK Naik --- , India D Barman --- , India Rampal --- , India RP Medhi --- , India

    The effects of three fertiliser solutions (20:20:20, 15:5:25 and 12:30:10 NPK) with electrical conductivity (EC) of 1, 1.5 or 2 mS cm−1 on growth and flowering of Cymbidium ‘Sleeping Nymph’ were investigated over three years. One-year-old tissue-cultured propagules of ‘Sleeping...

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42. 

    The low-frequency vocal repertoire of adult African dwarf crocodiles

    Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Agata Staniewicz --- University of Bristol, United Kingdom Gráinne McCabe --- United Kingdom, Marc Holderied --- University of Bristol, United Kingdom

    Acoustic techniques are rapidly becoming powerful tools for species monitoring and biodiversity assessment. These methods can be particularly appropriate for forest-dwelling crocodiles which are difficult to survey visually. However, basic vocal-repertoire data is lacking for many of the poorly known...

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43. 

    THE OCCURRENCE OF MICROCYSTIS AERUGINOSA IN THE BOTTOM SEDIMENTS OF A SHALLOW EUTROPHIC PAN

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: M. Tow --- Department of Botany and Microbiology, South Africa

    Sediment samples, collected from Jan Smuts Park Dam in Brakpan, Transvaal, during winter months were incubated in culture medium in the laboratory and found to contain viable Microcystis aeruginosa Kütz. emend. Elenkin colonies. The results obtained, indicate that the alga...

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44. 

    RATE OF EROSION IN THE CATCHMENT OF THE BULBERGFONTEIN DAM NEAR REDDERSBURG IN THE ORANGE FREE STATE

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.S. Ie Roux --- Department of Geography, South Africa Z.N. Roos --- Department of Geography, South Africa

    The volume of sediment in the Bulbergfontein Dam was computed after mapping the area of the dam and ascertaining the depth of the sediment by digging and augering. The watershed of the impoundment had been delimited by means of aerial...

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45. 

    A PRELIMINARY LIMNOLOGICAL INVESTIGATION OF TWELVE SOUTHERN AFRICAN GEOTHERMAL WATERS

    Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.J. Ashton --- National Institute for Water Research, South Africa F.R. Schoeman --- National Institute for Water Research, South Africa

    The ionic composition and algal flora of twelve geothermal waters in southern South West Africa and north-western South Africa are described, many for the first time. Water temperatures ranged from 24,9 to 66 °C and salinity values indicated moderate mineralization...

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46. 

    SHORT-TERM IMPACTS OF FORMULATIONS OF BACILLUS THURINGIENSIS VAR. ISRAELENSIS DE BARJAC AND THE ORGANOPHOSPHATE TEMEPHOS, USED IN BLACKFLY (DIPTERA: SIMULIIDAE) CONTROL, ON RHEOPHILIC BENTHIC MACROINVERTEBRATES IN THE MIDDLE ORANGE RIVER, SOUTH AFRICA

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R.W. Palmer --- Department of Water Affairs and Forestry, South Africa

    The impacts of larvicides used in the control of blackflies (Diptera: Simuliidae) on macroinvertebrates in the stones-in-current biotope were assessed during 8 field trials in the middle Orange River, South Africa. Two Bacillus thuringiensis var. israelensis (B.t.i.) products (VectobacR 12AS...

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47. 

    IMPACTS OF REPEATED APPLICATIONS OF BACILLUS THURINGIENSIS VAR. ISRAELENSIS DE BARJAC AND TEMEPHOS, USED IN BLACKFLY (DIPTERA: SIMULIIDAE) CONTROL, ON MACROINVERTEBRATES IN THE MIDDLE ORANGE RIVER, SOUTH AFRICA

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R.W. Palmer --- Department of Water Affairs and Forestry, South Africa A.R. Palmer --- , South Africa

    The impacts of five consecutive treatments of blackfly larvicides on macroinvertebrates in the middle Orange River were assessed. The abundance of the midge Xenochironomus sp. and the limpet Burnupia sp. was lower at sites treated with Bacillus thuringiensis var. israelensis...

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48. 

    A PRELIMINARY EVALUATION OF ASPECTS OF SASS (SOUTH AFRICAN SCORING SYSTEM) FOR THE RAPID BIOASSESSMENT OF WATER QUALITY IN RIVERS, WITH PARTICULAR REFERENCE TO THE INCORPORATION OF SASS IN A NATIONAL BIOMONITORING PROGRAMME

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: H. F. Dallas --- , , South Africa

    The rapid bioassessment method, SASS (South African Scoring System) has been developed to assess water quality in riverine ecosystems. It is a scoring system based on the presence or absence of macroinvertebrate groups, and yields three values, namely SASS4 Score,...

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49. 

    MANAGEMENT, CONSERVATION AND RESEARCH OF INTERNATIONALLY SHARED WATERCOURSES IN SOUTIIERN AFRICA—NAMIBIAN EXPERIENCE WITH THE OKAVANGO RIVER AND RIVERS OF THE EASTERN CAPRIVI

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E. D. Taylor --- , England S. Bethune --- , Namibia

    Although the emphasis of the recent National Rivers Research Initiative (now the Research Programme for the Management of Rivers) in South Africa was on river research in that country, the reality is that in southern Africa many watercourses are shared...

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50. 

    Medium-term changes in grass composition and diversity of Highland Sourveld grassland in the southern Drakensberg in response to fire and grazing management

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: A D Short T G O'Connor C R Hurt

    This study examined the compositional stability of Highland Sourveld in response to fire and grazing by wildlife (Coleford Nature Reserve) and by cattle on three properties over 20-25 years. A limited amount of compositional change took place except on a...

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51. 

    Monitoring in a complex world — seeking slow variables, a scaled focus, and speedier learning

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T.J.P. Lynam M. Stafford Smith

    Recent developments from complex systems theorists provide new insights into our understanding and, hence, monitoring of rangelands. Designing monitoring systems around the slow variables should lead to the generation of information that could greatly improve decision making in an adaptive...

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52. 

    Monitoring to detect change on rangelands: physical, social and economic/policy drivers

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J.R. Brown K.M. Havstad

    Agents that can cause important changes in properties of biological communities are referred to as drivers. Drivers may be classed as physical, social and economic/policy, referring to their origin and mode of action. Physical drivers include environmental (weather, climate) and...

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53. 

    Towards a technique for determining basal cover in tufted grasslands

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M.B. Hardy --- , Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South Africa

    Computer simulation, point‐based field sampling procedures, and step‐wise multiple linear regression were used to establish a relationship between the basal cover (BC) of a sample site and paired observations of the mean distance from a point to the nearest living...

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54. 

    The grazing index method of range condition assessment

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.C.V. du Toit --- Department of Agriculture, Republic of South Africa

    Owing to the difficulty of examining succession theory in the Karoo, it is suggested the ecological index method (EIM), be replaced by the grazing index method (GIM), through the introduction of grazing index values (GIV) for Karoo plant species. The...

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55. 

    Evaluation of the point‐centred‐quarter method of sampling Kaffrarian Succulent Thicket

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G.C. Stuart‐Hill --- Department of Grassland Science, Republic of South Africa

    The objective was to evaluate the efficiency and repeatability of the point‐centred‐quarter method. The parameter which was most efficiently sampled was species composition (relative density) with 90% replicate similarity being achieved with 100 point‐centred‐quarters. However, this technique cannot be recommended,...

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56. 

    Research note: Vernalization requirements of Lolium multiflorum Lam. cv. Tetrone

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: A. Landman --- Agricultural Research Council, Republic of South Africa P.J. Robbertse --- Department of Botany, Republic of South Africa A. Smith --- Agricultural Research Council, Republic of South Africa

    This study was undertaken mainly to attempt to understand why Italian type plants of Lolium multiflorum Lam. (Italian ryegrass) fail to become vernalized in certain climatic regions of South Africa. The vernalization requirements of seed and plants for the induction...

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57. 

    Research note: Quantification of the effects of defoliation on grass vigour

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: K.P. Kirkman --- Department of Agriculture, Republic of South Africa A. Moore --- , Republic of South Africa

    The quantification of defoliation effects on grass vigour is important in understanding veld response to differential management. Effect of grazing on vigour can be determined by measuring regrowth during the season following grazing and comparing treatments with an undefoliated control...

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58. 

    Influence of grazing frequency and intensity on aerial and reproductive tillering in Lolium perenne L. under subtropical conditions

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: F.R. McKenzie --- Department of Grassland Science, Republic of South Africa

    Reproductive and aerial tillering dynamics in Lolium perenne L. (perennial ryegrass) was monitored for two years under grazing. Reproductive tillers were observed from winter (June) to midsummer (February) with the main period of initiation occurring in spring to early summer...

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59. 

    Veld fire reporting and mapping techniques in the Kruger National Park, South Africa, from 1941 to 2011

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N Govender --- , South Africa O Mutanga --- Department of Geography, South Africa D Ntsala --- , South Africa

    Fire has long been regarded as a major determinant of ecosystem structure and function within African savannas. Improvements in fire detection, mapping and recordings of fire activity over the past few years have made it possible to provide more reliable...

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60. 

    Identifying key grazing indicators to monitor trends in the veld condition of Lambert's Bay Strandveld, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nelmarie Saayman --- Directorate: Plant Science, South Africa Craig Morris --- Agricultural Research Council–Animal Production Institute, South Africa Hannes Botha --- Directorate: Plant Science, South Africa

    Currently, the methods used to assess the veld condition of the Lambert's Bay Strandveld along the West Coast of South Africa require that the operator knows all the plants encountered in the survey area. In this study data were collected...

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61. 

    Age determination of miombo species Brachystegia spiciformis (Leguminosae – Caesalpinoideae) in Zimbabwe using growth rings

    Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: I.M. Grundy

    The objective of this study was to determine whether Brachystegia spiciformis Benth. (Leguminosae – Caesalpinoideae), one of the dominants of dry miombo woodland in Zimbabwe, forms annual growth rings. In the past the production of effective cutting rotations and sound...

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62. 

    Propagating Osyris lanceolata (African sandalwood) through air layering: Its potential and limitation in Tanzania

    Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: P.L. Mwang'ingo Z. Teklehaimanot L.L. Lulandala S.M. Maliondo

    Propagation of African sandalwood (Osyris lanceolata) by air layering (marcotting) was investigated at Sao Hill, Tanzania, aiming at providing an alternative propagation technique to the use of seeds or cuttings that germinate or root poorly. Air layers were initiated on...

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63. 

    Long-Term Antelope Population Monitoring in Southern Cape Forests

    Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Armin H.W. Seydack --- Department of Water Affairs and Forestry, Republic of South Africa Johan Huisamen --- Department of Water Affairs and Forestry, Republic of South Africa Rynhard Kok --- Department of Water Affairs and Forestry, Republic of South Africa

    The results of population monitoring of two forest antelope species in the Knysna forests (South Africa), the bushbuck (Tragelaphus scriptus) and blue duiker (Philantomba monticola) are presented. Most monitoring was done by faecal pellet group counting, but some track counts,...

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64. 

    Remote sensing from space—present and future applications in forestry, nature conservation and landscape management

    Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Christoph Kätsch --- Faculty of Forestry, Fachhochschule Hildesheim/Holzminden, Germany Holger Vogt --- Dipl. Forstwirt Holger Vogt, Faculty of Forestry, South Africa

    Past studies have suggested that sound knowledge about the reflectance characteristics of objects could be of great value in understanding the physical, chemical, and the spatial properties of features on our planet. These characteristics can be assessed remotely, and the...

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65. 

    Teacher Attitudes towards the Inclusion of Children with Mild Hearing Impairments into the Regular School Settings

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Levison Maunganidze --- Zimbabwe Open University, Zimbabwe Joseph Mavu Kasayira --- Midlands State University, Zimbabwe Nancy Ruhode --- Zimbabwe Open University, Zimbabwe Loice Shonhiwa --- Zimbabwe Open University, Zimbabwe Tholene Sodi --- University of Venda, South Africa

    The study examined the attitudes of a sample of Zimbabwean teachers towards the inclusion of children with mild hearing impairments. Two hundred and forty-six primary school teachers participated in the study. The teachers completed the modified Attitude Toward Mainstreaming Questionnaire...

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66. 

    Heroin Dependence Recovery

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Monika dos Santos --- University of South Africa, Fred van Staden --- University of South Africa,

    The consequences of heroin dependence can be extremely difficult to escape from, resulting in unpleasant and potentially terrifying experiences. This descriptive study explores the factors which are important in achieving abstinence, in allowing recovery to be maintained in the longer...

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67. 

    Learning from Narratives: Understanding the Impact of Childhood Abuse on Interpersonal Functioning Later in Life

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Gwen Vogel --- , USA Sharon Gschaider-Kassahun --- , USA

    This study used a survey and narrative approach to understand the link between childhood abuse experiences and interpersonal functioning later in life. Participants for the children's survey were 88 children (males = 43; females = 45; age range 5 to...

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68. 

    Voices of African Traditional Healers: Cultural Context and Implications for the Practice of Counselling in Sub-Saharan Africa

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lisa Lopez Levers --- Duquesne University, USA Lynne Radomsky --- University of the Western Cape, South Africa Tamara Shefer --- University of the Western Cape, South Africa

    The healing paradigm implicit in many sub-Saharan African cultures is embedded in African cosmology, and thus the recognition of this is essential for understanding Traditional African Healing practices and implementing collaborative counselling practices. To this end, this article focuses on...

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69. 

    Adolescent Boys' Talk about Absent Fathers

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Malose Langa --- University of Witwatersrand,

    The objective of this study was to explore how adolescent boys talk about absent fathers in Alexandra Township, a historically working-class and black community in Gauteng, South Africa. Individual and group interviews were conducted with 30 adolescent boys between the...

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70. 

    The Value of Life Design Counselling for an Adolescent who Stutters

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree --- University of Pretoria, Yolene Hancke --- University of Pretoria,

    This study reports the results of a life design approach case study with an adolescent with stuttering. A variety of postmodern techniques were used to engage the adolescent in life design conversations about a preferred and meaningful future. Post-intervention, the...

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71. 

    Perceived Child Rearing Practices as Predictors of University Students' Satisfaction with their Sexual Relationships

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Charisse Lowe --- University of the Free State, Edwin Devon du Plessis --- University of the Free State, Nico Nortje --- University of the Free State,

    The aim of this study was to determine the effects that perceived child-rearing practices have on the sexually intimate relationship satisfaction of a sample of 130 male (n=62) and female (n=68) fourth year South African university students. Participants completed the...

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72. 

    Predictors of Economic Locus of Control Among University Students in Uganda

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Peter Baguma --- Makerere University, Uganda Regis Chireshe --- University of South Africa,

    This study sought to predict economic locus of control from the background characteristics and personal dispositions of college students. Participants were a convenience sample of 236 Ugandan university students (males = 43.6%, females = 56.4%, Mean age = 23.80 years,...

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73. 

    Quality of Daily Life with Teenage Motherhood

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Edzisani Sodi --- Tholene Sodi and Partner's Inc, South Africa Tholene Sodi --- University of Limpopo, South Africa

    This study describes teenage mothers' quality of daily life in a South African rural setting. It is a retrospective study. It was conducted with five participant women aged between 26 and 35 years with early motherhood experience. In-depth interviews were...

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74. 

    Health and Psychosocial Wellbeing of Caregivers and Households of Orphans and Vulnerable Children (OVC) from a Low-Income South African Community

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mambwe Kasese-Hara --- University of the Witwatersrand, South Africa Mzikazi Nduna --- University of the Witwatersrand, South Africa Misheck Ndebele --- University of the Witwatersrand, South Africa Noleen Pillay --- University of the Witwatersrand, South Africa

    This study reports on the health and psychosocial wellbeing of caregivers of orphans and vulnerable children (OVC) and members of their households in a low-income South African community. Participants were 54 guardians of OVC registered to receive support at the...

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75. 

    Perceived Stress by Senior Secondary School Educators in a South African School District

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Reynold Abraham Sonn --- Walter Sisulu University,

    This study investigated perceptions of work-related stress as experienced by school personnel in a South African school district. Participants were senior secondary high school educators from five schools (n= 20, mean age = 38.6, females = 12, males = 8...

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76. 

    Group Polarization Effects on Decisions by Selected Kenyan Secondary School Disciplinary Panels

    Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Peter J. O. Aloka --- Catholic University of Eastern Africa, Olaniyi Bojuwoye --- University of the Western Cape,

    This study investigated social group phenomenon of group polarization effects on disciplinary hearing decisions in selected Kenyan secondary school. The participants were 78 school personnel (females = 42 % and males 58%) from ten secondary schools with both unisex (n...

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77. 

    Moufang Unit Loops Torsion Over Their Centres

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: EdgarG. Goodaire Ćesar Polcino Milies

    Let L be an RA loop, that is, a loop whose loop ring in any characteristic is an alternative, but not associative, ring. We find necessary and sufficient conditions for the (Moufang) unit loop of RL to be torsion over...

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78. 

    Natural Alternatives For One Dimensional Median Filtering

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C.H. Rohwer M. Wild

    For practical purposes median smoothers have often been considered the basic components for the construction of simple non-linear smoothers for removing impulsive noise before any subsequent linear signal extraction from a sequence. Alternatives exist that are computationally convenient, conceptually simpler...

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79. 

    Higher Derivations and a Theorem By Herstein

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Miguel Ferrero Claus Haetinger

    In this paper we extend to the higher derivations a well-known result proved by Herstein concerning derivations in prime rings. We prove results which imply that every Jordan higher derivation of a 2-torsion-free semiprime ring is a higher derivation.

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80. 

    Maximal Ideals in Near-Rings And Semigroups

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: HenryE. Heatherly RalphP. Tucci

    This paper gives conditions that guarantee that a near-ring or a semi- group has maximal right, left, or two-sided ideals. Stronger results are obtained for those semigroups which are adjoint semigroups of rings. Examples are given which illustrate and delimit...

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81. 

    A note on * _μ -rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. France-Jackson H.J. Le Roux

    We introduce and investigate the concept of * μ -rings which is a generalization of *-rings defined and studied in [4], [5], [6], [7] and [10]. This lets us generalize many important results valid for *-rings and obtain a useful...

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82. 

    On *-Essential Ideals and Biideals of Rings with Involution

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D.I.C. Mendes

    Let R be a ring with involution *. We describe the structure of R, when R has no proper *-essential *-ideals (*-biideals) and also when R has a *-essential minimal *-biideal.

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83. 

    Generalized Derivations of Associative Algebras

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Hiroaki Komatsu Atsushi Nakajima

    In their paper [6], Leger and Luks introduced the notion of a generalized derivation in nonassociative algebras and got several results for generalized derivations of Lie algebras. This generalized derivation is closely related to Breˇsar's and the second author's generalized...

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84. 

    On the Cardinality of Smallest Spanning Sets of Rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nadia Boudi Lorenz Halbeisen

    Let R = (R, +, ˙) be a ring. Then Z ⊆ R is called spanning if the R-module generated by Z is equal to the ring R. A spanning set Z ⊆ R is called smallest if there is...

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85. 

    Vertex coverings by coloured induced graphs — Frames and Umbrellas

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Wayne Goddard MichaelA. Henning

    A graph G homogeneously embeds in a graph H if for every vertex x of G and every vertex y of H there is an induced copy of G in H with x at y. The graph G uniformly embeds...

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86. 

    Maximal Ideals in Rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: HenryE. Heatherly RalphP. Tucci

    This paper gives necessary and sufficient conditions which guarantee that a ring have maximal left, right, or two-sided ideals. The relations of rings without maximal ideals to the Jacobson and Brown-McCoy radical are discussed. Examples of rings without maximal ideals...

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87. 

    Graph-Coloring and Choice a Note on a Note by Shelah and Soifer

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Horst Herrlich Y.T. Rhineghost

    Sharpening results of Shelah and Soifer we will show that in ZF set theory the Shelah-Soifer Graph G has the following properties: 1. If AC(2), the axiom of choice for families of 2-element sets, or AC(R), the axiom...

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88. 

    On rings generating supernilpotent and special atoms

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H. France-Jackson N.J. Groenewald

    We study prime rings which generate supernilpotent (respectively special) atoms, that is, atoms of the lattice of all supernilpotent (respectively special) radicals. A prime ring A is called a **-ring if the smallest special class containing A is closed under...

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89. 

    (Φ, M)–extensions of near-rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mark Farag

    In this paper, we define and study a generalization of matrix, polynomial, and group near-rings. New results on ideal essentiality and lying over are obtained.

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90. 

    On Frobenius, Mazur, and Gelfand-Mazur theorems on division algebras

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: VictorM. Bogdan

    The main purpose of this paper is to introduce the reader to the theory of normed division algebras. It is written with a graduate student of mathematics in mind, who only had exposure to Advanced Calculus and to an introduction...

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91. 

    Different nil radicals for near-rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: N.J Groenewald

    It is well known that there are a number of different nonequivalent definitions of a prime near-ring. In this paper we show that this give rise to a number of different upper nil radicals which all coincide with the usual...

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92. 

    Boundedly UC spaces: characterisations and preservation

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Tanvi Jain S. Kundu

    A metric space (X, d) is called a boundedly UC space if every closed and bounded subset of X is a UC space. A metric space (X, d) is called a UC space if each real-valued continuous function on (X,...

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93. 

    Positive derivations on lattice ordered rings of matrices

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Homeira Pajoohesh

    Here we consider a commutative ℓ-ring R with unit. We show that the only positive derivation on the ℓ-ring Mn (R) is 0 if and only if the only positive derivation on R is zero. Also, if the only positive...

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94. 

    Minimal generating sets of groups, rings, and fields

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lorenz Halbeisen Martin Hamilton Pavel Růžička

    A subset X of a group (or a ring, or a field) is called generating, if the smallest subgroup (or subring, or subfield) containing X is the group (ring, field) itself. A generating set X is called minimal generating, if...

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95. 

    Waring's Problem Restricted by a System of Sum of Digits Congruences

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Oliver Pfeiffer JörgM. Thuswaldner

    The aim of the present paper is to generalize earlier work by Thuswaldner and Tichy on Waring's problem with digital restrictions to systems of digital restrictions. Let sq (n) be the q-adic sum of digits function and let d, s,...

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96. 

    Gorenstein injective envelopes and covers over n-perfect rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: EdgarE. Enochs J.A. López-Ramos

    We prove the existence of Gorenstein injective envelopes and covers over n-perfect rings for some classes of modules associated with a dualizing bimodule.

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97. 

    Lattice-Valued Convergence Ring and Its Uniform Convergence Structure

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: T.M.G. Ahsanullah --- Department of Mathematics, Saudi Arabia

    Considering L a frame, we introduce the notion of stratified L-neighborhood topological ring, produce some characterization theorems including its Luniformizability. With the help of the notions of stratified convergence structures attributed to Gunther Jäger [10], we introduce and study various...

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98. 

    An Algebraic Characterization of Blumberg Spaces

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R. Ahmadi Zand --- Department of Mathematics, Iran

    Let X be a topological space and let C(X) be the ring of continuous real-valued functions on X. We study T′(X) as an over-ring of C(X), where T′(X) denotes the set of all real-valued functions on X such that for...

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99. 

    On Prime and Semiprime Near-Rings with Generalized Derivation

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Öznur Gölbaşi --- Department of Mathematics, Turkey

    Let N be a left near-ring and S be a nonempty subset of N. A mapping F from N to N is called commuting on S if [F(x),x] = 0 for all x € S. The mapping F is called...

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100. 

     Relative homological groups over coherent rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lixin Mao --- Institute of Mathematics, China

     Let R be a left coherent ring. We study the properties of relative homological groups , and . As applications, we obtain some new approaches to compute the F P-injective and flat dimensions of...

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101. 

     Vector integration

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E.G.F. Thomas --- Johann Bernoulli Institute for Mathematics and Computer Science, The Netherlands

     This paper deals with the theory of integration of scalar functions with respect to a measure with values in a, not necessarily locally convex, topological vector space. It focuses on the extension of such integrals from bounded measurable functions to...

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102. 

     Generating polynomials using function composition

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Erhard Aichinger --- Institut für Algebra, Austria

     We characterize the integral polynomials that can be obtained from x and x 2 (or from 1, x, and x 3) by using +, −, and function composition.

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103. 

     The impact of participatory and non-participatory evaluations on meeting project objectives

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Mercy Niba J Maryann Green

     This study investigates the value of participation on meeting a project's objectives by comparing the impact of participatory and non-participatory evaluation frameworks. We assessed HIV/AIDS projects that shared similarities in terms of objectives and implementation strategies, but differed in their...

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104. 

     Psychosocial disadvantage: preparation, grieving, remembrance and recovery for orphans in eastern Zimbabwe

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Brian Howard Nelia Matinhure SherylA McCurdy Cary Alan Johnson

     Few programmes for sub-Saharan Africa's 12.3 million children orphaned by AIDS have focused on their high risk for psychosocial problems. As groundwork for supporting orphans' healthy development, this study describes the preparation, grief, and memorial experiences and the physical and...

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105. 

     Vulnerability to HIV infection among Luo female adolescent orphans in Western Kenya

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Erick Otieno Nyambedha

     Large-scale surveys have reported that about 55% of orphans worldwide are adolescents. In Kenya, the majority of HIV-infected adolescents are females. The current study used the anthropological methods of in-depth case studies to analyse how migratory life situations of individual...

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106. 

     HIV/AIDS and auditory function in adults: the need for intensified research in the developing world

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Katijah Khoza-Shangase --- , South Africa

     This article reviews published research on auditory function in HIV-infected adults, while also highlighting the need for intensified research on this topic in Africa. It begins with an introduction to the effects of HIV disease and treatment on the auditory...

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107. 

     HIV/AIDS knowledge among adolescent sign-language users in South Africa

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Victor de Andrade --- Department of Speech Pathology and Audiology, South Africa Bontle Baloyi --- Department of Speech Pathology and Audiology, South Africa

     People with hearing impairment may have difficulty accessing information about HIV/AIDS, especially those who use sign language. Because adolescence is characterised by sexual maturation, it is important to gauge levels of HIV/ AIDS awareness and knowledge in this age group...

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108. 

     Perceptions of HIV, AIDS and tuberculosis among patients on antiretroviral therapy in Bulawayo, Zimbabwe: implications for the provision of HIV and TB care services

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Alexander Rödlach --- Department of Sociology, Anthropology and Social Work, United States RiittaA Dlodlo --- , France ZaneleE Hwalima --- Health Services Department, Zimbabwe

     The objectives of the research were to explore perceptions of HIV, AIDS and tuberculosis (TB) among individuals enrolled in antiretroviral therapy (ART) at two municipal clinics in Bulawayo, Zimbabwe, and to assess the implications of these perceptions on the provision...

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109. 

     An assessment of the health of two rivers within Harare, Zimbabwe, on the basis of macroinvertebrate community structure and selected physicochemical variables

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Phiri

     The aim of this study was to assess and compare the water quality of the Gwebi and Mukuvisi Rivers, on the basis of selected physicochemical variables and macroinvertebrate community structure. Five sites where selected on both rivers and these were...

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110. 

     A comparison of several methods of assessing river condition using benthic macroinvertebrate assemblages

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CA Brown

     This paper attempts to address some of the problems that are faced in the endeavour to minimise the time and financial costs of environmental monitoring. At the same time, it aims to assess the usefulness to freshwater studies of some...

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111. 

     Changes in the distribution of emergent aquatic plants in a brackish South African estuarine-lake system

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: IA Russell

     Vegetation mapping in the Wilderness Lakes indicated that, between 1975 and 1997, prominent increases occurred in the distribution of the mapping units Phragmites australis (53.9ha; +53%), grass or fields (23.1ha; +35%) and scrub or trees (12.2ha; +45%). Over the same...

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112. 

     Prosobranch mollusc species- and size-preferences of Sargochromis codringtonii (Cichlidae) in Lake Kariba, Zimbabwe

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Brodersen MJ Chimbari H Madsen

     From the stomach contents of 28 wild-caught Sargochromis codringtonii from Lake Kariba the size and species of snails consumed were estimated from opercula found. An energetic cost/benefit ratio of the various sizes of the most frequent prey, Bellamya capillata, was...

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113. 

     miniSASS — A novel technique for community participation in river health monitoring and management

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: P Mark Graham ChrisWS Dickens R Jim Taylor

     Reliable indicators of water quality and river health are often difficult and expensive to derive. This paper reports on a process to develop a low technology, scientifically reliable and robust technique to monitor water quality in rivers and streams. With...

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114. 

     Effects of human activities on the Waterval River, Vaal River catchment, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TK Gyedu-Ababio F van Wyk

     Rand Water's chemical water quality data from 1991 to 2000 were used to assess the water quality of the Waterval River, which contributes about 111 x 106m3 of water to the Vaal River annually. Due to a biological community's ability...

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115. 

     Development and application of a fish-based Sensitivity-weighted Index of Biotic Integrity (SIBI) for use in the assessment of biotic integrity in the Klip River, Gauteng, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PJ Kotze GJ Steyn HH du Preez CJ Kleynhans

     Biotic indices using fish assemblage characteristics have been applied with great success in river assessments around the world. Internationally the most commonly applied fish index is the Index of Biotic Integrity (IBI), whilst in South Africa the most commonly applied...

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116. 

     The Namibian Scoring System (NASS) version 2 rapid bio-assessment method for rivers

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RW Palmer ED Taylor

     This paper presents a rapid bio-assessment method for assessing the ecological condition of streams and rivers in Namibia. The method uses the composition and abundance of aquatic invertebrates, which are identified in the field, mostly to family level. The method...

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117. 

     Interactions between fish and snails in a Zimbabwe pond, with particular reference to Sargochromis codringtonii (Pisces: Cichlidae)

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Paul Makoni MosesJ Chimbari Henry Madsen

     The impact of fishes on snail densities in a 100 x 12m pond was assessed from October 2000 to May 2002, using a fish exclosure experiment. Snail species included numerically dominant Bulinus globosus (ca 85%) as well as B. tropicus,...

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118. 

     Recommendations for the collection, preparation and enumeration of diatoms from riverine habitats for water quality monitoring in South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JonathanC Taylor P Arno de la Rey Leon van Rensburg

     Diatoms have become important organisms for monitoring freshwaters and their value has been recognised for cross-border water quality monitoring in the European Union. If South Africa is to include diatoms in the current suite of bioindicators, then thorough testing of...

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119. 

     Assessing the true status of the fish species Labeo cylindricus (Peters 1868) (Teleostei: Cyprinidae) in Lake Baringo, Kenya

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JR Britton DM Harper

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120. 

     Preliminary testing of the Integrated Habitat Assessment System (IHAS) for aquatic macroinvertebrates

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DeanJ Ollis Charles Boucher HelenF Dallas KarenJ Esler

     Preliminary testing of the Integrated Habitat Assessment System (IHAS), a widely-used aquatic macroinvertebrate habitat assessment method in South Africa, was undertaken. Based on the sensitivity of the South African Scoring System (SASS) to biotope availability and assuming that SASS Scores...

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121. 

     Towards the development of a macroinvertebrate sampling technique for palustrine wetlands in South Africa: a pilot investigation in the KwaZuluNatal midlands

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW Quinn

     A study was undertaken in November 2003 to derive a suitable sampling technique for collecting a representative sample of aquatic macroinvertebrates from a selected emergent vegetation biotope in a palustrine wetland, Melmoth Vlei, KwaZulu-Natal, South Africa. The aim was to...

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122. 

     Fish breeding in, and juvenile recruitment to, the St Lucia Estuarine System under conditions of extended mouth closure and low lake levels

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Digby Cyrus Leon Vivier

     Ongoing drought conditions along the northern coast of KwaZulu-Natal resulted in the St Lucia Estuary mouth closing, and to evaporation leading to extremely low lake levels and the development of hypersaline conditions in most parts of the system. The mouth...

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123. 

     Bioassessment of the ecological integrity of river ecosystems using aquatic macroinvertebrates: an overview with a focus on South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DeanJ Ollis HelenF Dallas KarenJ Esler Charles Boucher

     An overview is given of the bioassessment of the ecological integrity of river ecosystems using aquatic macroinvertebrates, focussing on the South African situation within a global context. Biotic indices and their use in aquatic bioassessment are covered, and comparative descriptions...

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124. 

     Comparative analysis of the aquaculture potential of hybrid Tilapia zillii (male) × T. guineensis (female) (Teleostei: Cichlidae) in floating cages, cement tanks and earth ponds

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CélineSK Nobah Tidiani Koné Valentin N'Douba Jos Snoeks Gouli Gooré Bi EssetchiP Kouamélan

     The effect of three rearing systems, floating cages, cement tanks and earth ponds, on the growth rate, feeding efficiency and mortality rates of hybrid tilapia — Tilapia zillii (male) × T. guineensis (female) — was evaluated for 233 days. Fish...

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125. 

     Feeding dynamics of Palaemon peringueyi (Decapoda, Caridea) in the temporarily open/closed Kasouga Estuary, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PW Froneman --- Department of Zoology and Entomology, South Africa TO Henninger --- Department of Zoology and Entomology, South Africa

     The feeding ecology of the caridean shrimp Palaemon peringueyi in the temporarily open/closed Kasouga Estuary, Eastern Cape, was examined during summer and winter employing stomach fullness index (SFI) analysis. Mean SFI values for male and female shrimp during summer ranged...

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126. 

     Stream degradation, fish abundance and the potential viability of ornamental fisheries in south-western Cameroon

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RE Brummett --- , Cameroon C Cargill --- , Cameroon LM Lekunzé --- , Cameroon D Puddister --- , Cameroon

     Fifteen sites on nine second- and third-order streams in the Mount Cameroon area, with varying degrees of human disturbance, were sampled during wet and dry seasons over 21 months in 2003–2005 to estimate their potential for sustainable exploitation of ornamental...

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127. 

     Ecological health of the Usuthu and Mbuluzi rivers in Swaziland based onselected biological indicators

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Magagula --- Department of Biological Sciences, Swaziland AB Mansuetus --- Department of Biological Sciences, Swaziland JO Tetteh --- Department of Biological Sciences, Swaziland

     Biological monitoring, using coliform bacteria and macroinvertebrate populations and diversity, was carried out monthly from August 2004 to January 2005 to determine the ecological health of the Usuthu and Mbuluzi rivers in Swaziland. Water temperature and pH were not significantly...

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128. 

     The influence of biotope and sampling method on the assessment of the invertebrate community structure in endorheic reed pans in South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR de Klerk --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa

     Reed pans in the Mpumalanga Lakes District, South Africa, support an abundant diversity and richness of aquatic macroinvertebrates in a variety of different biotopes which, in the case of depressional wetlands such as reed pans, are not well studied. This...

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129. 

     Influence of human disturbance on patterns of leaf herbivory at Gazi Bay mangrove forest, Kenya

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CM Kihia --- Department of Biological Science, Kenya JM Mathooko --- Department of Biological Science, Kenya RK Ruwa --- , Kenya WA Shivoga --- Department of Environmental Science, Kenya

     Mangrove herbivores cause leaf serration, perforation and galls prior to leaf abscission. This study compared damage by herbivores on leaves of four mangrove species at sites under different levels of human physical disturbance, and provides further evidence of the indirect...

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130. 

     Histopathological changes in two potential indicator fish species from a hyper-eutrophic freshwater ecosystem in South Africa: a baseline study

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Marchand --- Department of Zoology, South Africa JC van Dyk --- Department of Zoology, South Africa IEJ Barnhoorn --- Andrology, Department of Urology, South Africa GM Wagenaar --- Department of Zoology, South Africa

     Histopathological changes were identified in selected target organs from two freshwater fish species, Clarias gariepinus and Oreochromis mossambicus, inhabiting the hyper-eutrophic Roodeplaat Dam near Pretoria. A histology-based fish health assessment protocol was used, including a semiquantitative histopathological assessment of the...

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131. 

     A vegetation-based hierarchical classification for seasonally pulsed floodplains in the Okavango Delta, Botswana

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Murray-Hudson --- , Botswana F Combs --- , Botswana P Wolski --- , Botswana MT Brown --- , USA

     A classification scheme is presented for seasonal floodplains of the Boro-Xudum distributary of the Okavango Delta, Botswana. This distributary is subject to an annual flood-pulse, the inundated area varying from a mean low of 3 600 km2 to a mean...

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132. 

     Impact of abattoir waste on Woji Creek, Port Harcourt, Nigeria, using physicochemistry and macrozoobenthic diversity indices

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Zabbey --- Department of Animal Science and Fisheries, Nigeria I Etela --- Department of Animal Science and Fisheries, Nigeria

     The impact of waste discharge from Zoo abattoir, Port Harcourt, on the environmental quality of Woji Creek was studied from April 2001 to March 2002 using physicochemistry and diversity of benthic animals as indicators. Priority physicochemical parameters (total suspended solid,...

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133. 

     A comparative assessment of the health status of feral populations of Clarias gariepinus from three dams in the Limpopo and Olifants river systems, Limpopo province, South Africa, using the fish health assessment index protocol

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GN Madanire-Moyo --- Department of Biodiversity, South Africa WJ Luus-Powell --- Department of Biodiversity, South Africa A Jooste --- Department of Biodiversity, South Africa PAS Olivier --- Department of Biodiversity, South Africa

     An evaluation of the health status of feral populations of the freshwater catfish Clarias gariepinus was carried out between 2009 and 2010 at three dams in the Limpopo and Olifants river systems with varying levels of human impact. Fish health...

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134. 

     Pesticides in South African fresh waters

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Ansara-Ross --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa PJ van den Brink --- Department of Aquatic Ecology and Water Quality Management, The Netherlands MJ Ross --- Centre for Aquatic Research, Department of Zoology, South Africa

     Public concern has recently escalated over pesticide contamination of South African aquatic ecosystems. This review of published literature on the occurrence of pesticides within South African freshwater systems indicates that fewer than 50 studies of selected pesticides have been undertaken,...

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135. 

     The impact of water quality deterioration on macroinvertebrate communities in the Swartkops River, South Africa: a multimetric approach

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ON Odume --- Unilever Centre for Environmental Water Quality, South Africa WJ Muller --- Unilever Centre for Environmental Water Quality, South Africa FO Arimoro --- Unilever Centre for Environmental Water Quality, South Africa CG Palmer --- Unilever Centre for Environmental Water Quality, South Africa

     A multimetric approach, using 21 metrics representing five categories — abundance, composition, richness, diversity and biotic indices — was applied to investigate the impacts of water quality deterioration on macro-invertebrate communities in the Swartkops River. Macroinvertebrates were sampled seasonally between...

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136. 

     Evaluation of the fish health assessment index in the Olifants River system, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RM Watson --- Department of Zoology, South Africa D Crafford --- Department of Zoology, South Africa A Avenant-Oldewage --- Department of Zoology, South Africa

     The fish health assessment index (HAI) biomonitoring technique, developed in the USA and subsequently tested in South Africa, was re-evaluated in the Olifants River system using Clarias gariepinus, Oreochromis mossambicus and Labeobarbus marequensis during drought and flood conditions in 1994–1997...

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137. 

     Spatio-temporal variability of surface water quality parameters in a South African estuarine lake system

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: IA Russell --- , South Africa

     Long-term (20+ years) water quality datasets for estuaries are rare, especially for smaller systems. Monitoring of salinity, temperature, pH, dissolved oxygen and turbidity has been undertaken since 1991 in the intensively utilised, modified, and managed temporarily open/closed Touw Estuary and...

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138. 

     Rapid colonisation of artificial substrates by macroinvertebrates in a South African lentic environment

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AJ Booth --- Department of Ichthyology and Fisheries Science, South Africa WT Kadye --- Department of Ichthyology and Fisheries Science, South Africa T Vu --- Department of Ichthyology and Fisheries Science, South Africa M Wright --- Department of Ichthyology and Fisheries Science, South Africa

     Macroinvertebrate colonisation patterns on artificial substrates were investigated in a small reservoir in the Eastern Cape, South Africa. Semi-closed 1 000 cm3 polythene netting cages filled with either brick, gravel, shredded plastic, or equal proportions of these three materials, were...

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139. 

     Characterisation of potential aquaculture pond effluents, and physico-chemical and microbial assessment of effluent-receiving waters in central Ghana

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: YB Ansah --- Department of Fish and Wildlife Conservation, USA EA Frimpong --- Department of Fish and Wildlife Conservation, USA S Amisah --- Department of Fisheries and Watershed Management, Ghana

     An understanding of specific aquaculture systems and the impacts of their management practices leads to sound and cost-effective policies to protect the aquatic environment. Water samples were collected in 2009 from fish ponds, streams that receive effluents directly from ponds...

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140. 

     Functionality evaluation of the Xikundu fishway, Luvuvhu River, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PSO Fouché --- Zoology Department, South Africa RG Heath --- Golder Associates Africa, South Africa

     The Xikundu fishway, in the Luvuvhu River near Thohoyandou, was monitored for 23 months in 2004–2006. Adults and juveniles of 60% of the expected fish species were collected in the fishway, and two major upstream migrations occurred. Most Labeo and...

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141. 

     Sunbirds hover at flowers of Salvia and Lycium

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Petra Wester --- Department of Botany and Zoology, South Africa

     Sunbirds usually perch when visiting flowers for nectar and only rarely hover. Except for three studies of sunbirds visiting introduced plants in South Africa and India as well as a native plant in Cameroon, there have been no quantitative studies...

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142. 

     Monitoring the Long-term Effects of Management Practices on Site Productivity in South African Forestry

     Item type: Journal Article • Journal: South African Forestry Journal • Authors: C.J. Schutz --- Natal Forestry Research Centre Department of Environment Affairs,

     There is no evidence of any decline in site producitivity as a result of management practices in South African forestry. Problems may eventually arise with intensively managed stands on poor sites and from abnormally high rates of litter accumulation on...

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143. 

     CCA—treated Laminated Railway Sleepers and Telephone Cross-arms

     Item type: Journal Article • Journal: South African Forestry Journal • Authors: W.E. Conradie --- Council for Scientific and Industrial Research,

     A non-conventional process for the manufacturing of laminated pine railway sleepers and telephone cross-arms, involving the treatment of laminations with copper-chrome-arsenic (CCA) preservatives before gluing and assembly, was investigated.

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144. 

     A Review of the Dendrochronology and Radiocarbon Calibration Relationship

     Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.N. Thwaites --- Saasveld Forestry Research Centre,

     The history of dendrochronology is traced from the discovery of the method to prove astronomic sun-spot cycles to its use in archaeology for dating purposes. The principles and problems of both dendrochronology and radiocarbon 14C dating are described and the...

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145. 

     Ecological status of Hout River Dam, Limpopo province, South Africa, using fish condition and health assessment index protocols: a preliminary investigation

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JR Sara --- Aquaculture Research Unit, South Africa WJ Smit --- Department of Biodiversity, South Africa LJC Erasmus --- Department of Physiology and Environmental Health, South Africa TP Ramalepe --- Department of Biodiversity, South Africa ME Mogashoa --- Department of Physiology and Environmental Health, South Africa ME Raphahlelo --- Department of Biodiversity, South Africa J Theron --- Aquaculture Research Unit, South Africa WJ Luus-Powell --- Department of Biodiversity, South Africa

     The ecological status of Hout River Dam was evaluated in 2011 by assessing fish health, based on condition factor (K), health assessment index (HAI) and inverted parasite index (IPI), which provided a simple and rapid means of establishing the health...

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146. 

     Dynamics of the Fishery for Galjoen Dichistius Capensis, With an Assessment of Monitoring Methods

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C. G. Attwood

     The dynamics of the fishery for galjoen Dichistius capensis were investigated at four sites in South Africa from 1987 to 2000. At three sites, which were protected from fishing, Koppie Alleen, Lekkerwater (both in the De Hoop Marine Protected Area)...

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147. 

     Conserving Surface-nesting Seabirds at the Prince Edward Islands: The Roles of Research, Monitoring and Legislation

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. J. M. Crawford J. Cooper

     South Africa's subantarctic Prince Edward Islands support substantial proportions of the global populations of a number of surface-nesting seabirds. Populations of most of these have decreased at the islands since the 1980s and 12 of 16 species are regarded as...

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148. 

     Population Dynamics of the Wandering Albatross Diomedea Exulans at Marion Island: Longline Fishing and Environmental Influences

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D. C. Nel F. Taylor P. G. Ryan J. Cooper

     The subantarctic Prince Edward Islands (Marion and Prince Edward) support the largest breeding population of the Vulnerable wandering albatross Diomedea exulans. The number of birds breeding at Marion Island has fluctuated over the past three decades apparently as a result...

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149. 

     The Oldest Known Banded Wandering Albatross Diomedea Exulans at the Prince Edward Islands

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J. Cooper H. Battam C. Loves P. J. Milburn L. E. Smith

     The oldest known wandering albatross Diomedea exulans at the Prince Edward Islands is estimated to have been approximately half a century old when last recaptured in 2001. Demographic studies need to continue for several more decades before the true maximum...

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150. 

     Nest Densities of the Wandering Albatross Diomedea Exulans at the Prince Edward Islands, Estimated Using Gps

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L. G. Underhill S. L. Petersen J. Cooper

     Hand-held Global Positioning System (GPS) receivers provide opportunities for detailed and rapid mapping of features, including biological ones, further enhanced by the removal during 2000 of "selective availability". GPS was used to map, describe and compare nest densities within wandering...

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151. 

     Stage-dependent vertical distribution of pelagic fish eggs on the western Agulhas Bank, South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MT Dopolo CD van der Lingen CL Moloney

     The vertical distributions of eggs of anchovy Engraulis encrasicolus, sardine Sardinops sagax and round herring Etrumeus whiteheadi over the western Agulhas Bank, South Africa, were sampled between 0m and 100m, using an opening-closing WP-2 net, to investigate differences in developmental...

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152. 

     Wintering seabirds in West Africa: foraging hotspots off Western Sahara and Mauritania driven by upwelling and fisheries

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CJ Camphuysen J van der Meer

     Cold-water upwelling supports abundant and diverse faunas. Upwelling off Mauritania has been highlighted as being important for seabirds, but very few systematic offshore surveys have been conducted in that region. Mauritanian waters are increasingly targeted by commercial fisheries along the...

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153. 

     HAB Buoy: a new instrument for in situ monitoring and early warning of harmful algal bloom events

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PF Culverhouse R Williams B Simpson C Gallienne B Reguera M Cabrini S Fonda-Umani T Parisini FA Pellegrino Y Pazos H Wang L Escalera A Moroño M Hensey J Silke A Pellegrini D Thomas D James MA Longa S Kennedy G del Punta

     A new microplankton imaging and analysis instrument, HAB Buoy, is described. It integrates a high-speed camera for in-flow image acquisition with automatic specimen labelling software, known as DiCANN (Dinoflagellate Categorisation by Artificial Neural Network). Some preliminary results are presented together...

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154. 

     A test of an autonomous underwater vehicle as a monitoring tool in shallow water

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PA Tester SR Kibler B Hobson RW Litaker

     The utility of micro-autonomous underwater vehicles (AUVs) to detect hydrographic features that concentrate phytoplankton cells was evaluated during a study in a shallow tidal estuary. This study represented the first field test of Ranger™, a micro-AUV adapted for environmental applications...

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155. 

     Real-time monitoring of harmful algal blooms in the southern Benguela

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Fawcett S Bernard GC Pitcher TA Probyn A du Randt

     The southern Benguela Current region off South Africa is subject to frequent harmful algal blooms (HABs), which can have serious impacts — both through the introduction of toxins into the ecosystem and the collapse of high-biomass blooms leading to anoxia...

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156. 

     Accumulation of brevetoxins by passive sampling devices

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Shea P Tester J Cohen S Kibler S Varnam

     We report on initial investigations into the use of polymer-based passive sampling devices for the chronic time-integrated measure of brevetoxins in natural waters. Polyethylene membranes readily accumulated brevetoxins, but reached steady state within a few days, likely owing to surface...

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157. 

     First report of Phoronis ovalis from Africa and its effect on mussel hosts

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JL Ruesink --- Department of Biology, USA AC Trimble --- Department of Biology, USA

     Phoronis ovalis is a cosmopolitan, shell-boring phoronid worm reported from 24 locations worldwide in temperate latitudes, but not previously from Africa. We identified a shell-boring phoronid in Namibia that is morphologically similar to P. ovalis and subsequently surveyed its latitudinal...

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158. 

     The 2005 KwaZulu-Natal sardine run survey sheds new light on the ecology of small pelagic fish off the east coast of South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Coetzee --- Branch Fisheries, Department of Agriculture, South Africa D Merkle --- Branch Fisheries, Department of Agriculture, South Africa L Hutchings --- Oceans and Coasts, Department of Environmental Affairs, South Africa CD van der Lingen --- Branch Fisheries, Department of Agriculture, South Africa M van den Berg --- Oceans and Coasts, Department of Environmental Affairs, South Africa MD Durholtz --- Branch Fisheries, Department of Agriculture, South Africa

     Despite much public awareness surrounding the annual migration of sardine Sardinops sagax northward along the east coast of South Africa in winter each year, relatively little research effort has been expended to improve understanding of the ‘sardine run’. For this...

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159. 

     Natural markings of Cuvier's beaked whale Ziphius cavirostris in the Mediterranean Sea

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Rosso --- CIMA Research Foundation, Italy M Ballardini --- , Italy A Moulins --- CIMA Research Foundation, Italy M Würtz --- Biology Department, Italy

     Errors in analysis using natural marks have been recognised since the early development of mark-recapture techniques. In this nine-year study, the mark types present on Cuvier's beaked whales Ziphius cavirostris in the Mediterranean Sea were categorised in order to assess...

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160. 

     Migrations of humpback whales past Cape Vidal, South Africa, and an estimate of the population increase rate (1988–2002)

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KP Findlay --- Department of Oceanography, South Africa PB Best --- , South Africa MA Meÿer --- Department of Environmental Affairs, South Africa

     Shore-based surveys of migrating humpback whales Megaptera novaeangliae were undertaken from Cape Vidal, northern KwaZulu-Natal, South Africa, each year between 1988 and 1991, and in 2002. Daily observations of migrating whale groups were carried out from an approx. 60 m-high...

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161. 

     Prioritising range-wide scientific monitoring of the Cape fur seal in southern Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- Department of Environmental Affairs, South Africa WH Oosthuizen --- Department of Environmental Affairs, South Africa MA Meÿer --- Department of Environmental Affairs, South Africa SM Seakamela --- Department of Environmental Affairs, South Africa LG Underhill --- Department of Zoology, South Africa

     The range of the Cape fur seal Arctocephalus pusillus pusillus population largely coincides with the region of the cold, nutrient-rich Benguela Current Large Marine Ecosystem (BCLME) adjoining the west coast of South Africa, Namibia and Angola. Range-wide scientific monitoring of...

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162. 

     Temporal variability of a temperate fish assemblage in Africa's oldest marine protected area

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NC James --- , South Africa A Götz --- Elwandle Node, South African Environmental Observation Network (SAEON), South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa PD Cowley --- , South Africa

     A standardised research-based, shore-angling survey was conducted in the 47-year-old Tsitsikamma National Park Marine Protected Area (MPA) between 1998 and 2005. The aim of this study was to examine variability in community structure, relative abundance (catch per unit effort, CPUE)...

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163. 

     Baseline assessment of high-latitude coral reef fish communities in southern Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Floros --- , South Africa MH Schleyer --- , South Africa JQ Maggs --- , South Africa L Celliers --- , South Africa

     The Western Indian Ocean (WIO) is a region where detailed coral reef fish research has been relatively limited. This study constitutes an assessment of the fish communities of seven southern African high-latitude coral reefs. The aim was to provide ichthyological...

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164. 

     Thirty years of monitoring traditional fish trap catches at Kosi Bay, KwaZulu-Natal, South Africa, and management implications

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Kyle --- , South Africa

     The catches of the traditional fish traps in the Kosi Bay estuarine lakes were monitored over a 30-year period from 1981 to 2010. Monitoring data were used to provide estimates of, and insights into, catch size and species composition as...

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165. 

     Effect of human disturbance on the behavioural responses and offspring survival of grey-headed albatrosses Thalassarche chrysostoma at Subantarctic Marion Island

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Wheeler --- Animal Demography Unit, Department of Zoology, University of Cape Town, South Africa MS de Villiers --- Animal Demography Unit, Department of Zoology, University of Cape Town, South Africa R Altwegg --- Animal Demography Unit, Department of Zoology, University of Cape Town, South Africa

     Nest monitoring is commonly used to gather important seabird demographic data, but monitoring itself can affect seabird behaviour and offspring survival. The effect of monitoring on grey-headed albatrosses Thalassarche chrysostoma at Subantarctic Marion Island was investigated. The behaviour of chicks...

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166. 

     Knowledge Sharing and Innovation as it affects the Local Content in the Oil and Gas Industry in Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: O. O. Jegede --- , M. O. Ilori --- , J. A. Sonibare --- Department of Chemical Engineering, Nigeria B. A. Oluwale --- , W. O. Siyanbola --- ,

     This study assessed the factors hampering innovation and knowledge sharing in indigenous oil and gas firms in Nigeria. The aim was to provide information that will increase knowledge sharing among the indigenous in the sector and create added value, which...

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167. 

     Trade Preferences, Economies of Scale and Dynamic Productivity Upgrading in African Manufacturing Firms: The Production Technology–Institutional Context Nexus

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abdelrasaq Nal --- , South Africa

     Economic justification for the idea that a trade preference incentive can, through its enhanced market facility, bring about dynamic productivity gains to beneficiary firms is rooted in the logic of economies of scale. Under the assumption that this scale driven...

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168. 

     Innovation and Growth in Ugandan Manufacturing Firms

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Aggrey Niringiye --- School of Economics, Uganda Eria Hisali --- School of Economics, Uganda

     The aim of this study was to establish the effects of innovation on the growth of Ugandan manufacturing firms' using pseudo panel data. Little is known about the relationship between innovation and firm growth in Sub-Saharan African countries. This study...

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169. 

     Proposing Organizational Self Sufficiency Theory

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mohammad Ali Shafia --- Department of Industrial Engineering, Iran Mammo Muchie --- DST/NRF Research Professor, South Africa Ali Reza Babakhan --- Department of Progress Engineering, Iran

     It is becoming increasingly difficult to ignore the positive impacts of advanced manufacturing technologies (AMTs) on organizational performance. Many firms from developing countries attempt to import AMTs from foreign suppliers in order to improve their products' qualities, reduce costs and...

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170. 

     Clustering and Innovation in the Auto-mechanic Industry in Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: B.A. Oluwale --- African Institute for Science Policy and Innovation, OAU, M.O. Ilori --- African Institute for Science Policy and Innovation, OAU, T.O. Oyebisi --- African Institute for Science Policy and Innovation, OAU,

     This study determined the effect of clustering on innovation in the auto-mechanic industry in south-western Nigeria. It involved 13 auto-mechanic villages (clusters) comprising of 237 master mechanics located within Lagos and Ogun states and 145 master mechanics in Osun state...

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171. 

     Knowledge on Sclerocarya birrea subsp. caffra with emphasis on its importance as a non-timber forest product in South and southern Africa: A Summary

     Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Rachel Wynberg --- Graduate School of Environmental Studies, South Africa Jill Cribbins --- , South Africa Roger Leakey --- Agroforestry and Novel Crops Unit, School of Tropical Biology, Australia Cyril Lombard --- CRIAA SA-DC, Namibia Myles Mander --- , South Africa Sheona Shackleton --- Environmental Science Programme, South Africa Caroline Sullivan --- Centre for Ecology and Hydrology, Crownmarsh Gifford, England

     Sclerocarya birrea (marula) forms an integral part of the diet, tradition and culture of rural communities in southern Africa and also is central to various commercial initiatives. This second part of a review on the species provides an overview of...

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172. 

     A technique to identify annual growth rings in Eucalyptus grandis usingannual measurements of diameter at breast height and gamma raydensitometry

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: S Naidoo --- , South Africa F Ahmed --- , South Africa NW Pammenter --- , South Africa A Zboňák --- Department of Primary Industries and Fisheries, Australia

     Many eucalypt species do not show distinct growth rings because cambial activity does not show a strong response to seasonal variation in climate. Eucalyptus grandis, one of the most important commercial hardwood species in South Africa, is one such example...

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173. 

     Air layering and its potential in propagating Uapaca kirkiana: a fruit tree from the miombo woodland, Tanzania

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: PP Mwang'ingo --- , Tanzania LL Lulandala --- Faculty of Forestry and Nature Conservation, Tanzania

     The potential to propagate Uapaca kirkiana through air layering was investigated at Igumbilo forest, Tanzania. The objective was to determine the effect of time of setting air layers and use of indole-3-butyric acid (IBA) to promote rooting. Air layers were...

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174. 

     Variation in seed rain from Widdringtonia whytei growing in different conditions on Mulanje Mountain in Malawi

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: TF Chanyenga --- Department of Forest and Wood Science, Malawi CJ Geldenhuys --- Department of Forest and Wood Science, South Africa J Harvey --- Department of Statistics and Actuarial Sciences, South Africa

     Mulanje Mountain is one of the examples of tropical montane landscapes with plant populations varying in size from small fragments of less than 1 ha to riverine strips and stands of more than 100 ha. Seed availability is a potential...

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175. 

     Coarse root–shoot allometry of Pinus radiata modified by site conditions in the Western Cape province of South Africa

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: H Pretzsch --- Chair for Forest Growth and Yield, Germany P Biber --- Chair for Forest Growth and Yield, Germany E Uhl --- Chair for Forest Growth and Yield, Germany P Hense --- Chair for Forest Growth and Yield, Germany

     The relationship between root and shoot growth and how it is modified by chronic or episodic drought stress is so far not well understood. Allometric partitioning theory (APT) supposes a constant root–shoot allometry. Optimal partitioning theory (OPT) assumes that plants’...

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176. 

     HIV epidemiology and trends in a large national manufacturing company in South Africa, 2001–2006

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Clive Evian

     This paper presents epidemiological data from ongoing HIV-prevalence surveillance in a large South African manufacturing company located in various provinces, as well as one location in Swaziland. A survey of the workforce in 12 of the manufacturer's business units (BUs)...

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177. 

     Fostering children affected by AIDS in Richards Bay, South Africa: a qualitative study of grandparents' experiences

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Evalyne Nyasani --- , United Kingdom Erna Sterberg --- , South Africa Helen Smith --- , United Kingdom

     Grandparents are increasingly becoming the primary carers of children orphaned by the HIV epidemic in South Africa. Traditional family roles are being reversed as aging family members take responsibility for the physical and psychosocial needs of children. This study uses...

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178. 

     Paediatric antiretroviral treatment programmes in sub-Saharan Africa: a review of published clinical studies

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Mary-Ann Davies --- Infectious Diseases Epidemiology Unit, School of Public Health and Family Medicine, South Africa Matthias Egger --- , Switzerland Olivia Keiser --- , Switzerland Andrew Boulle --- Infectious Diseases Epidemiology Unit, School of Public Health and Family Medicine, South Africa

     Knowledge of the experience and outcomes of current paediatric antiretroviral treatment (ART) programmes in sub-Saharan Africa can inform new programmes in the region as well as enhance existing ones. This is urgently needed to facilitate the scale-up of treatment, which...

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179. 

     Amplified Fragment Length Polymorphism markers reveal population structuring in Dimidiochromis kiwinge (Teleostei: Cichlidae), a commercially-exploited species from Lake Malawi

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Daud Kassam Shingo Seki Kosaku Yamaoka

     The understanding of between- and within-population genetic variation and its partitioning on the basis of geographic origin is crucial in designing efficient fishing and conservation strategies of populations and/or species. However, for Lake Malawi's cichlid species, such population genetic studies...

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180. 

     Impact of Sargochromis codringtonii (Teleostei: Cichlidae) on pulmonate snails in irrigation ponds in Zimbabwe

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MosesJ Chimbari Paul Makoni Henry Madsen

     The impact of Sargochromis codringtonii on pulmonate snails, including those that transmit schistosomiasis, was assessed over 29 months in 2 800m2 irrigation ponds. Snail populations in fishless ponds were first monitored for 10 months before 85 S. codringtonii were introduced...

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181. 

     Declining catch per unit effort of an estuarine-dependent fish, Rhabdosargus sarba (Teleostei: Sparidae), in the marine environment following closure of the St Lucia Estuarine System, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BruceQ Mann Pierre Pradervand

     Monitoring of catch per unit effort of the tropical stumpnose Rhabdosargus sarba in the St Lucia Marine Reserve between 2001 and 2005 revealed a significant decline. A similar decline was evident from shore patrol data collected by Ezemvelo KwaZulu-Natal Wildlife...

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182. 

     The effect of biotope-specific sampling for aquatic macroinvertebrates on reference site classification and the identification of environmental predictors in Mpumalanga, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HelenF Dallas

     The classification of reference sites based on macroinvertebrate assemblages sampled in different aquatic biotopes in Mpumalanga, South Africa, was examined. Environmental variables that best predicted group membership for each of four classifications (stones, vegetation, sand and these three biotopes combined)...

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183. 

     Environmental impact of seasonal integrated aquaculture ponds ('fingerponds') in the wetlands of Lake Victoria, Kenya: an assessment, with the aid of Bayesian Networks

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Julius Kipkemboi AnneA van Dam Patrick Denny

     The potential effect on ecosystem integrity of the use of natural wetlands for seasonal wetland fishponds ('fingerponds'), integrated with vegetable production for livelihood demands, was evaluated using experimental sites at Lake Victoria, Kenya. Soluble reactive phosphorous and total phosphorus, ammonium,...

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184. 

     Trends analysis relating to pollution in Sakumo Lagoon, Ghana

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ruby Asmah Hedrick Dankwa CA Biney CC Amankwah

     Sakumo Lagoon, situated near Accra, is a Ramsar-listed coastal wetland threatened by urban and agricultural waste, being located in an urban area where access to domestic and waste disposal facilities is a major problem. The aim of this study was...

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185. 

     Effects of oil pollution on aquatic macroinvertebrate assemblages in Gabon wetlands

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MR Vinson EC Dinger J Kotynek M Dethier

     Macroinvertebrate assemblages from uncontaminated and contaminated sites in the Gamba Complex (Gabon) were compared, the latter sites having been subjected to ongoing oil spills since the 1970s. Vegetation communities surrounding the sites included savannah, shrub–scrub, palm forest, gallery forest and...

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186. 

     Community participation in river monitoring using diatoms: a case study from the Buffelspoort Valley Conservancy

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Taylor --- School of Environmental Sciences and Development (Botany Division), South Africa N Pope --- , South Africa L van Rensburg --- School of Environmental Sciences and Development (Botany Division), South Africa

     This study was undertaken to determine the present ecological state of rivers and streams in the Buffelspoort Valley Conservancy (BVC), against which later potential changes in, and impacts on, water quality could be measured. After very brief training, all field...

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187. 

     Application of a fish health assessment index and associated parasite index to Clarias gariepinus (Teleostei: Clariidae) in the Vaal River system, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Crafford --- Department of Zoology, South Africa A Avenant-Oldewage --- Department of Zoology, South Africa

     The aim of this study was to determine if the fish health assessment index (HAI) developed in the USA and associated parasite index (PI), when applied to Clarias gariepinus at two localities in the upper and middle Vaal River system,...

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188. 

     Impact of the Treasure oil spill on African penguins Spheniscus demersus at Dassen Island: case study of a rescue operation

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Wolfaardt LG Underhill R Altwegg J Visagie AJ Williams

     The bulk ore carrier MV Treasure sank between Robben and Dassen islands off western South Africa in June 2000. Although releasing less oil than the Apollo Sea spill six years earlier, the number of African penguins Spheniscus demersus oiled (approximately...

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189. 

     From beans to breams: how participatory workshops can contribute to marine conservation planning

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Wheeler FMJ Chambers R Sims-Castley RM Cowling DS Schoeman

     Systematic conservation planning is increasingly being used in the marine environment, but the relative paucity of data on marine patterns and process still presents a problem, particularly in developing countries. For example, along the south-eastern component of the Agulhas marine...

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190. 

     Why do we need to integrate population genetics into South African marine protected area planning?

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S von der Heyden --- Evolutionary Genomics Group, Department of Botany and Zoology, South Africa

     South Africa is home to a wide variety of marine flora and fauna distributed over at least three biogeo-graphic provinces. Currently, 9% of the coastline is protected by ‘no-take’ marine protected areas (MPAs), but the distribution of MPAs is uneven...

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191. 

     A conceptual tool for improving rangeland management decision-making at grassroots level: the local-level monitoring approach

     Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: K Kellner --- School of Environmental Sciences and Development, South Africa AS Moussa --- School of Environmental Sciences and Development, South Africa

     For many years, rangeland monitoring has mainly been the field of scientists, academics and extension workers trying to fine-tune methods to assess the condition of rangelands. Frameworks and monitoring systems developed with their associated indicators are often complex and inaccessible...

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192. 

     Some thoughts on policy and desertification: what key contributions can scientists make to policy processes in the southern African context?

     Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J Zeidler --- Integrated Environmental Consultants Namibia (IECN), Namibia

     Two types of desertification professionals are typically characterised—the scientist and the policy-maker. After many years of efforts to combat desertification and promote sustainable land management, it is surprising that these diverging perceptions remain so fixed. They prevailed throughout the process...

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193. 

     The impact of indigenous ungulate herbivory over five years (2004–2008) on the vegetation of the Little Karoo, South Africa

     Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MT Hoffman --- Plant Conservation Unit, Botany Department, South Africa CF Madden --- Plant Conservation Unit, Botany Department, South Africa K Erasmus --- Sanbona Wildlife Reserve, South Africa N Saayman --- Department of Agriculture: Western Cape, South Africa JC Botha --- Department of Agriculture: Western Cape, South Africa

     This study investigated the impact of rainfall and herbivory by indigenous herbivores over five years (2004–2008) on the vegetation of the Sanbona Wildlife Reserve (SWR), a 54 000 ha privately owned conservation area in the Little Karoo. Changes in floristic...

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194. 

     On the Placement of a Number of Strings in a Collection of Hats

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.P. Burger J.H. van Vuuren

     The following problem is considered in this paper: Suppose k strings of unit length are to be distributed amongst x hats. If cuts in the strings are allowed, how should the string (parts) be distributed amongst the hats so that,...

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195. 

     Stone-C˘ech Compactifications of Ditopological Texture Spaces

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Aysşegül Altay Uğur Murat Diker

     A texturing on a set S is a point separating, complete, completely distributive lattice S of subsets of S with respect to inclusion which contains S, Ø and for which arbitrary meet coincides with intersection and finite joins coincide with...

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196. 

     Notes Concerning Characterizations of Quasi-F Frames

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba Dube --- Department of Mathematical Sciences, South Africa Mack Matlabyane --- Department of Mathematics and Applied Mathematics, South Africa

     We give several characterizations of quasi F-frames. To name a few, let ℛL denote, as usual, the ring of real-valued continuous functions on a completely regular frame L. Then, L is quasi-F iff Ann2(α) + Ann2(β) = ℛL whenever α...

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197. 

     Relationship between the edgewise compression strength of corrugated board and the compression strength of liner and fluting medium papers

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: K Dimitrov --- Department of Chemical Engineering, South Africa M Heydenrych --- Department of Chemical Engineering, South Africa

     The compression strength of a corrugated board box is a direct measure of its stacking strength. The edgewise compression strength of corrugated board is the major contributor to the box stacking strength. This relation can be further extended to the...

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198. 

     Nitrogen uptake dynamics of a persistent cyanobacterium Cyanothece sp. bloom in Lake St Lucia, South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SJ du Plooy --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa AJ Smit --- School of Life Sciences, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa DG Muir --- Department of Biology, Medgar Evers College, USA

     Worldwide, persistent cyanobacterial blooms are becoming more frequent and are often associated with effects of global climate change. In June 2009, a widespread bloom of the unicellular cyanobacterium, Cyanothece sp., appeared in North Lake and False Bay of Lake St...

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199. 

     Modelling habitat suitability in the Aquatic Warbler wintering ground Djoudj National Park area in Senegal

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Cosima Tegetmeyer --- Institute of Botany and Landscape Ecology, Germany Annett Frick --- LUP GmbH, Germany Nina Seifert --- Zoological Institute and Museum, Germany

     The only well-studied wintering ground of the globally threatened Aquatic Warbler Acrocephalus paludicola is the ‘Djoudj area’ in Senegal. This study identifies potential Aquatic Warbler habitats within that area and gives an estimate of the size of the local wintering...

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200. 

     Population dynamics of potentially harmful algal blooms in Bizerte Lagoon, Tunisia

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Bouchouicha Smida --- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Tunisie I Sahraoui --- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Tunisie B Grami --- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Tunisie H Hadj Mabrouk --- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Tunisie A Sakka Hlaili --- Laboratoire de Cytologie Végétale et Phytoplanctonologie, Département des Sciences de la Vie, Faculté des Sciences de Bizerte, Tunisie

     The population dynamics of potentially harmful phytoplankton in the semi-closed, coastal Bizerte Lagoon, Tunisia, in the south-western Mediterranean, were examined from November 2007 to February 2009 at six sampling stations, three situated in areas of mussel and oyster farming. The...

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201. 

     Management of diabetic ketoacidosis

     Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: D Jivan --- Department of Medicine, Division of Endocrinology and Metabolism,

     Although the mortality of diabetic ketoacidosis (DKA) has decreased substantially in the developed world, high mortality rates still prevail in South Africa, thus making this an important condition to recognise early and manage well. This review discusses the treatment of...

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202. 

     A comparison of five glucometers in South Africa

     Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Y Essack --- Department of Chemical Pathology, South Africa M Hoffman --- Department of Chemical Pathology, South Africa M Rensburg --- Department of Chemical Pathology, South Africa J Van Wyk --- Department of Clinical Pathology, South Africa CS Meyer --- Department of Chemical Pathology, South Africa R Erasmus --- Department of Chemical Pathology, South Africa

     Objective: To assess the accuracy and precision of five currently available blood glucose meters in South Africa

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203. 

     Morphine sparing effect of low dose ketamine during patient controlled analgesia

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: FJ Smith --- Department of Anaesthesiology, CGJ Briel --- Department of Anaesthesiology, PJ Becker --- Unit for Biostatistics, South Africa

     Objective: To compare the quality of intravenous patient controlled analgesia (PCIA) of low dose morphine plus ketamine with morphine. Design: Double blind case control study. Setting: Academic hospital. Patients: Thirty-six patients scheduled for elective abdominal hysterectomy were randomly divided into...

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204. 

     Entropy of the electroencephalogram as applied in the M-Entropy S/5™ Module (GE Healthcare) during increases in nitrous oxide and constant sevoflurane concentrations

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: FJ Smith --- Department of Anaesthesiology, South Africa S Spijkerman --- Department of Anaesthesiology, South Africa PJ Becker --- Biostatistics Unit, Medical Research Council, and Unit for Clinical Epidemiology, South Africa JF Coetzee --- Department of Anaesthesiology and Critical Care, South Africa

     Background: It has been suggested that spectral entropy of the electroencephalogram as applied in the M-Entropy S/5TM Module (GE Healthcare) does not detect the effects of nitrous oxide (N2O). The aim of this study was to investigate the effect on...

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205. 

     Insertion of a temperature probe into the ProSeal® laryngeal mask airway drainage tube

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: M Singh --- Department of Anaesthesiology, India D Kapoor --- Department of Anaesthesiology, India

     Background: Temperature monitoring is one of the minimum mandatory monitoring standards of anaesthesiology. Intraoperative hypothermia and hyperthermia can both be detrimental for patients. We introduced a temperature probe into a Proseal® laryngeal mask airway (LMA) drainage tube, and measured patient...

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206. 

     Continuous measurement of heart rate variability following carbon dioxide pneumoperitoneum during nitrous oxide/sevoflurane anaesthesia

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Kurashige --- Department of Anesthesiology, Japan K Takakura --- Department of Anesthesiology, Japan M Mizogami --- Department of Anesthesiology, Japan

     Background: Previous studies of autonomic nervous system activity through analysis of heart rate variability (HRV) have demonstrated increased sympathetic activity during positive-pressure pneumoperitoneum. We employed an online, continuous method for rapid HRV analysis (MemCalc™, Tarawa, Suwa Trust, Tokyo, Japan) to...

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207. 

     Anaesthesia and subglottic airway obstruction

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: BA Bulbulia --- Garden City Clinic, South Africa R Ahmed --- Chris Hani Baragwanath Hospital, South Africa

     In this article, we describe the anaesthetic management and laser excision of a subglottic tumour that caused upper airway obstruction. Stridor was the presenting feature. A good history and careful assessment will reduce the likelihood of erroneous or delayed diagnosis...

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208. 

     Evaluation of three adjusting manoeuvres and type of endotracheal tube in the success of air-Q™ aided tracheal intubation

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: RM Khan --- Department of Anaesthesia and Intensive Care Unit, National Trauma Centre, Sultanate of Oman NK Kaul --- Department of Anaesthesia and Intensive Care Unit, National Trauma Centre, Sultanate of Oman PH Neelakanthan --- Department of Anaesthesia and Intensive Care Unit, National Trauma Centre, Sultanate of Oman PK Sharma --- Sultan Qaboos University Hospital, Sultanate of Oman

     Background: The present study observed whether the use of three different adjusting manoeuvres and use of an armoured tracheal tube would increase the success rate of tracheal intubation, aided by the air-Q™ intubating laryngeal airway (air-Q™ ILA).

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209. 

     The effect of positive end-expiratory pressure on pulse pressure variation

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: FJ Smith --- Department of Anaesthesiology, School of Medicine, Faculty of Health Sciences, M Geyser --- Department of Anaesthesiology, School of Medicine, Faculty of Health Sciences, I Schreuder --- Department of Anaesthesiology, School of Medicine, Faculty of Health Sciences, PJ Becker --- Biostatics Unit,

     Objectives: To determine the effect of different levels of positive end-expiratory pressure (PEEP) on pulse pressure variation (PPV).

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210. 

     A placebo-controlled comparison of ketamine with pethidine for the prevention of postoperative shivering

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: AM Dar --- Department of Anaesthesiology and Critical Care, India SM Qazi --- Department of Anaesthesiology and Critical Care, India S Sidiq --- Department of Anaesthesiology and Critical Care, India

     Objective: Postanaesthetic shivering is a recognised complication of general and regional anaesthesia. Pharmacological and nonpharmacological methods have been used to prevent shivering. This study was conducted to determine the efficacy of ketamine when compared with pethidine and placebo for the...

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211. 

     Intraoperative neurophysiological monitoring for the anaesthetist

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: JJN Van Der Walt --- Department of Anaesthesia, JM Thomas --- Red Cross War Memorial Children's Hospital, University of Cape Town, AA Figaji --- Division of Neurosurgery,

     Intraoperative neurophysiological monitoring (IONM) has become the gold standard for the monitoring of functional nervous tissue and mapping of eloquent brain tissue during neurosurgical procedures. The multimodal use of somatosensory-evoked potentials and motor-evoked potentials ensures adequate monitoring of anterior sensory...

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212. 

     Intraoperative neurophysiological monitoring for the anaesthetist

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: JJN Van Der Walt --- Department of Anaesthesia, Red Cross War Memorial Children's Hospital, JM Thomas --- Red Cross War Memorial Children's Hospital, AA Figaji --- Division of Neurosurgery,

     The use of intraoperative neurophysiological monitoring (INM) during spinal orthopaedic and neurosurgical procedures provides a challenge to the attending anaesthesiologist. Since all anaesthetic agents affect synaptic function, the choice of agent will be determined by the type of surgery and...

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213. 

     A comparison of non-invasive versus invasive methods of haemoglobin estimation in patients undergoing intracranial surgery

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Puneet Khanna --- Department of Anaesthesiology, India Vanitha Rajagopalan --- Department of Anaesthesiology, India Gyaninder Singh --- Department of Neuroanaesthesiology, India Hemanshu Prabhakar --- Department of Neuroanaesthesiology, India

     Background: Until recently, invasive monitoring techniques were the only ones available for the estimation of haemoglobin (Hb) in the blood. However, following the introduction of a new non-invasive monitor, Hb concentration could be non-invasively and continuously monitored. It allows immediate...

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214. 

     Infection control in anaesthesia in regional, tertiary and central hospitals in KwaZulu-Natal. Part 1: Unsafe injection practices among anaesthetists

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: RA Samuel --- Department of Anaesthesiology, PD Gopalan --- Department of Anaesthesiology, Y Coovadia --- Inkosi Albert Luthuli Central Hospital, R Samuel --- Inkosi Albert Luthuli Central Hospital,

     Objectives: Unsafe injection and vial usage practices, including the reuse of needles and syringes for different patients, is one of the leading causes of the iatrogenic spread of blood-borne diseases. A study was conducted to determine the prevalence of the...

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215. 

     Tramadol and postoperative shivering in patients undergoing open and laparoscopic cholecystectomy under general anaesthesia

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: R Angral --- Department of Anaesthesia, India AA Wani --- Department of Anaesthesia, India BB Kapoor --- Department of Anaesthesia, India

     Background: For many years, shivering after anaesthesia has been recognised, and is one consequence of perioperative hypothermia. Shivering affects a number of physiological parameters. The aim of the study was to evaluate the severity of hypothermia after open and laparoscopic...

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216. 

     Klippel-Feil syndrome for scoliosis surgery: management of a potentially difficult paediatric airway, and report of false-negative motor-evoked potential

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: PCS Tan --- Department of Anaesthesiology and Intensive Care, Malaysia S Mohtar --- Department of Anaesthesiology and Intensive Care, Malaysia N Esa --- Department of Anaesthesiology and Intensive Care, Malaysia

     A six-year-old girl with Klippel-Feil syndrome and throcacolumbar scoliosis was scheduled for growing rod insertion. Inhalational induction and tracheal intubation were carried out, with her neck in a neutral position. However, the patient woke up with paraplegia, despite normal intraoperative...

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217. 

     Improving the Use of Lipid-lowering Drugs at Brits Hospital

     Item type: Journal Article • Journal: South African Family Practice • Authors: C Van Deventer --- Brits Hospital, C Mokhlele --- Brits Hospital, J Hugo --- Family Medicine, Medunsa,

     Background When it was found by the Brits Hospital Pharmacy and Therapeutics Committee (PTC) in 2000 that simvastatin was responsible for extremely high costs in a district hospital, it was decided to undertake a quality improvement study to assess and,...

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218. 

     Does Medicine Need Psycho-Social Science?

     Item type: Journal Article • Journal: South African Family Practice • Authors: SWP Mhlongo --- Department of Family Medicine & Primary Health Care Medunsa, PMH Maduna --- Department of Family Medicine & Primary Health Care Medunsa,

     Despite Alma Ata in 1978, the developing countries continue to divert scarce resources to multiple-story tertiary hospitals at the expense of primary health care services. No country in the world has unlimited resources with regard to budget allocation for health...

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219. 

     Mentoring in medical practice

     Item type: Journal Article • Journal: South African Family Practice • Authors: T Gibbs --- College of Medicine and Medical Sciences, Kingdom of Bahrain D Brigden --- Faculty of Health Sciences, UK D Hellenberg --- University of Cape Town,

     Previous articles in this series have defined words and concepts that guide our thinking in the areas of teaching and learning, set in the greater world of education; but what happens in the quiet and often lonely world of individual...

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220. 

     Inpatient blood glucose management of diabetic patients in a large secondary hospital

     Item type: Journal Article • Journal: South African Family Practice • Authors: DG Van Zyl --- Department of Internal Medicine, P Rheeder --- Division of Clinical Epidemiology,

     Background: Diabetes has become a major health problem worldwide, as well as in South Africa. This, coupled with the chronicity of the disease, relate to an increasing burden on health care facilities and an increasing number of hospital admissions of...

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221. 

     Adherence-monitoring practices by private healthcare sector doctors managing HIV and AIDS patients in the eThekwini metro of KwaZulu-Natal

     Item type: Journal Article • Journal: South African Family Practice • Authors: P Naidoo --- School of Pharmacy and Pharmacology, University of KwaZulu-Natal, South Africa M Taylor --- School of Family and Public Health, CC Jinabhai --- School of Family and Public Health,

     Background: The danger of poor adherence to treatment by patients with HIV infection is that poor adherence correlates with clinical and virological failure. Understanding how private-sector doctors monitor adherence by their HIV-infected patients could assist in developing interventions to improve...

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222. 

     A preliminary study of the effects of aircraft noise on families who reside in close proximity to an airport

     Item type: Journal Article • Journal: South African Family Practice • Authors: D Pillay --- University of the Witwatersrand, K Archary --- University of the Witwatersrand, S Panday --- University of KwaZulu-Natal,

     Background: The use of air transportation has grown in the last century, escalating the noise exposure of families residing in close proximity to airports. The audiological effects need to be assessed to determine the impact of this increase on children...

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223. 

     An approach to hearing loss in children

     Item type: Journal Article • Journal: South African Family Practice • Authors: GJ Copley --- University of Cape Town, Groote Schuur and Red Cross Children's hospitals, South Africa NB Friderichs --- The Carel du Toit Centre, Ivan Tom's Infant Hearing Screening Programme, South Africa

     Hearing loss in children is common and can be difficult to identify, especially in young children. There are a variety of pathologies involved in these children, which make the problem challenging to diagnose and manage. This update describes how new...

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224. 

     A wandering spleen: A common presentation of an uncommon anomaly

     Item type: Journal Article • Journal: South African Family Practice • Authors: AC Ugwu --- Department of Medical Radiography and Radiological Sciences, Faculty of Health Sciences and Technology, Nigeria CO Ogbonna --- Radiology Department, Federal Medical Centre, Nigeria AO Imo --- Radiology Department, Nigeria

     Background: With the advent of real time ultrasonography of the abdomen, the spleen is no longer an inaccessible organ. Wandering spleen is a rare entity with less than 500 cases reported in literature so far.

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225. 

     Measuring adherence to antiretroviral treatment and assessing factors affecting adherence in a state primary healthcare clinic, Mitchells Plain Community Health Centre

     Item type: Journal Article • Journal: South African Family Practice • Authors: T Engel --- Family Medicine and Primary Care, University of Stellenbosch, AC Schlemmer --- Family Medicine and Primary Care, University of Stellenbosch,

     Background: A need was identified to measure adherence levels to antiretroviral treatment (ART) in a resource-poor setting and to assess the impact on adherence to ART of partner disclosure, partner support, other support, and length of time between diagnosis and...

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226. 

     Prevalence of end-digit preference in recorded blood pressure by nurses: a comparison of measurements taken by mercury and electronic blood pressure-measuring devices

     Item type: Journal Article • Journal: South African Family Practice • Authors: OE Ayodele --- Department of Internal Medicine, SO Akinyemi --- People Living with HIV/AIDS Clinic, AO Adeniji --- Department of Obstetrics and Gynaecology, AO Akinboro --- Department of Internal Medicine, AA Popoola --- Ladoke Akintola University of Technology Teaching Hospital, Nigeria CA Alao --- Department of Nursing, Nigeria

     Objectives: When compared with the use of a mercury sphygmomanometer, the use of a validated digital blood pressure (BP) measuring device eliminates the risk of exposure to mercury. Digital devices are also associated with a lesser degree of end-digit preference...

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227. 

     Hearing loss within a marriage: perceptions of the spouse with normal hearing

     Item type: Journal Article • Journal: South African Family Practice • Authors: NG Govender --- Discipline of Audiology, N Maistry --- Discipline of Audiology, N Soomar --- Discipline of Audiology, J Paken --- Discipline of Audiology,

     Objective: The objective of the study was to determine the perceptions of a spouse about the influence of his or her partner's hearing loss on their relationship as it may have an impact on aural rehabilitation.

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228. 

     An overview of pharmacotherapy-induced ototoxicity

     Item type: Journal Article • Journal: South African Family Practice • Authors: Schellack Natalie --- Department of Pharmacy, Faculty of Health Sciences, Naude Alida --- Department of Pharmacy, Faculty of Health Sciences,

     This article provides an overview of ototoxic medication, as well as different pharmacological and audiological monitoring strategies. Although ototoxic medications play an important role in modern medicine, they also have the capacity to do great harm and lead to significant...

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229. 

     Milk and management: breastfeeding as a project

     Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Miriam H.A. Waltz --- Department of Anthropology, South Africa

     Ideas about motherhood among middle-class women in South Africa recently seem to have shifted toward more “intensive mothering,” partly enabled by class privilege resulting from highly unequal labour relations. In this context breastfeeding and other mothering practices are approached as...

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230. 

     African philosophy: a key to African innovation and development

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. Verharen --- Department of Philosophy, USA B. Gutema --- Department of Philosophy, Ethiopia J. Tharakan --- Department of Chemical Engineering, F. Bugarin --- Department of Sociology and Anthropology, J. Fortunak --- Department of Chemistry and Pharmaceutical Sciences, G. Kadoda --- Department of Computer Science, Sudan M. Liu --- School of Social Work, G. Middendorf --- Department of Biology,

     This essay demonstrates how African philosophy can be a key to African innovation and development. Its first section illustrates how philosophy as a discipline drives innovation in science and technology. The second part proposes a new discipline linking science, engineering...

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231. 

     Variability in growth of Vachellia nilotica provenances tested in the Sudano-Sahelian zone of Niger

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Mahamane Larwanou --- African Forest Forum, Kenya Rabiou Issa --- Institut Pratique de Développement Rural, Niger Mahamane Saadou --- Department of Biology, Faculty of Science, Niger Anders Ræbild --- Department of Geoscience and Natural Resources, Denmark

     A provenance trial of Vachellia nilotica (Acacia nilotica) was conducted in Niger in order to assess variability in growth among 10 provenances from Africa (subsp. adstringens from Niger, Senegal and Cameroun) and outside the continent (subsp. indica from Pakistan and...

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232. 

     Nutritional condition of fish larvae in South African estuaries: an appraisal of three biochemical methods

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Costalago --- Department of Zoology, South Africa N Strydom --- Department of Zoology, South Africa C Frost --- Department of Biochemistry and Microbiology, South Africa

     Estuaries are exposed to a number of threats and many South African estuarine systems are functionally and structurally altered. The extent to which fish are affected by these alterations is not fully understood. The estuarine round herring Gilchristella aestuaria is...

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233. 

     Actor networks and innovation activities among rural enterprises in a South African locality

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kgabo Hector Ramoroka --- Human Sciences Research Council (HSRC), South Africa Peter Jacobs --- Human Sciences Research Council (HSRC), South Africa Hlokoma Mangqalaza --- Human Sciences Research Council (HSRC), South Africa

     Rural localities are often viewed as too remote, sparsely populated and poor in critical resources needed for them to be innovation hubs. This study contributes new evidence on how actor networks improve innovation performance among rural enterprises that are privately...

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234. 

     Primary wing-moult and site fidelity in South African mousebirds (Coliidae)

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Adrian JFK Craig --- Department of Zoology and Entomology, South Africa Bo T Bonnevie --- Information Technology Division, South Africa Patrick E Hulley --- Department of Zoology and Entomology, South Africa George D Underhill --- ,

     Based on large samples of birds mist-netted in the Eastern Cape and the Western Cape, moult of the primary remiges in both Speckled Mousebirds Colius striatus and Red-faced Mousebirds Urocolius indicus occurred throughout the year with no regional or seasonal...

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235. 

     Satellite tracking of a young Steppe Eagle from the United Arab Emirates during two spring and autumn migrations

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sàlim Javed --- Environment Agency – Abu Dhabi, United Arab Emirates Shahid Khan --- Environment Agency – Abu Dhabi, United Arab Emirates Junid Nazeer --- Environment Agency – Abu Dhabi, United Arab Emirates Shakeel Ahmed --- Environment Agency – Abu Dhabi, United Arab Emirates Abdullah Al Hammadi --- Environment Agency – Abu Dhabi, United Arab Emirates Eissa Al Hammadi --- Environment Agency – Abu Dhabi, United Arab Emirates

     Following recovery and successful rehabilitation, a young Steppe Eagle Aquila nipalensis was tagged with a 45 g GPS satellite transmitter to track its migration and identify potential wintering and summering areas of the species passing through the United Arab Emirates...

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236. 

     Aggregate breakdown mechanisms as affected by soil texture and organic matter in soils dominated by primary minerals

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Adornis D Nciizah --- Department of Agronomy, South Africa Isaiah IC Wakindiki --- Department of Agronomy, South Africa

     Soil aggregates breakdown mechanisms depend on soil properties such as texture, clay mineralogy and organic matter content. Little is known about the effect of soil properties on aggregate breakdown mechanisms in South African soils. The objective of this study was...

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237. 

     Potassium maldistribution revisited

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Justine Pietersen --- Department of Anaesthesiology and Critical Care, South Africa Andrew Levin --- Department of Anaesthesiology and Critical Care, South Africa

     Objective: This study investigated the maldistribution of concentrated 15% potassium chloride after injection into one-litre, flexible, Ringer’s lactate bags.

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238. 

     Blood sugar control in the intensive care unit: time to relook

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Amy G. Rapsang --- Jawaharlal Institute of Postgraduate Medical Education and Research, India Devajit C. Shyam --- Jawaharlal Institute of Postgraduate Medical Education and Research, India

     The choice of blood sugar control technique in the intensive care unit (ICU) has long been debated. Intensive insulin therapy to achieve normoglycaemia has been shown to reduce mortality, morbidity and the length of ICU stay, but at the same...

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239. 

     Innovation characteristics of formal manufacturing firms in Uganda

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Julius Ecuru --- College of Engineering, Design, Art and Technology, Uganda Peter O. Lating --- College of Engineering, Design, Art and Technology, Uganda Lena Trojer --- Blekinge Institute of Technology, Sweden

     Manufacturing firms ought to innovate in order to stay competitive in a highly liberalised and open economy. This is even more crucial in low income countries, which seek accelerated economic growth and transformation. In this paper, we describe innovation characteristics...

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240. 

     Dealing and sharing: the construction of community in a Pretoria public park

     Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Dennis Edward Webster --- Department of Anthropology and Archaeology, South Africa

     This paper describes how a group of men, who are invisible to the state because they possess no formal legal documentation, such as ID books or passports, and do not take part in the formal economy, live in a public...

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241. 

     Patterns of chironomid body-size distribution in an effluent-impacted river in the Eastern Cape, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ON Odume --- Unilever Centre for Environmental Water Quality, South Africa CG Palmer --- Unilever Centre for Environmental Water Quality, South Africa FO Arimoro --- Department of Biological Sciences, Nigeria PK Mensah --- Unilever Centre for Environmental Water Quality, South Africa

     Body size is an important determinant of assemblage structure in rivers and streams impacted by elevated concentrations of pollutants such as salts and metals. In the present study, because of the larger surface-area-tovolume ratio of small-bodied chironomid species compared with...

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242. 

     Assessing the suitability of commercial fisheries data for local-scale marine spatial planning in South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Chalmers --- Department of Ichthyology and Fisheries Science, South Africa A Oosthuizen --- Park Planning and Development, South African National Parks, South Africa A Götz --- Department of Ichthyology and Fisheries Science, South Africa A Paterson --- South African Institute for Aquatic Biodiversity, South Africa WHH Sauer --- Department of Ichthyology and Fisheries Science, South Africa

     This study integrates fisheries logbook data with observer and vessel monitoring system (VMS) data in order to assess the accuracy of reported data and to develop high-resolution spatial data suitable for use in local-scale marine spatial planning analyses. Spatial assessments...

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243. 

     Comparison of dexmedetomidine, pethidine and tramadol in the treatment of post-neuraxial anaesthesia shivering

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Lim Fern --- Department of Anaesthesia and Intensive Care, Malaysia Karis Misiran --- Department of Anaesthesia and Intensive Care, Malaysia

     Objective: This study was performed to compare the effectiveness of intravenous dexmedetomidine with that of pethidine and tramadol in the treatment of post-neuraxial anaesthesia shivering.

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244. 

     Abundance of the endangered Cape parrot, Poicephalus robustus, in South Africa: implications for its survival

     Item type: Journal Article • Journal: African Zoology • Authors: Colleen T. Downs --- School of Botany and Zoology, University of KwaZulu-Natal, South Africa

     Factors affecting the decline of the endangered Cape parrot, which is endemic to South Africa, are presented. Its abundance and status were investigated during annual intensive national surveys. The merits of such a census are reported. Presence of birds was...

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245. 

     Burrow utilization by springhares (Pedetes capensis) in the Eastern Cape, South Africa

     Item type: Journal Article • Journal: African Zoology • Authors: D.M. Peinke --- Department of Zoology and Entomology, South Africa C.R. Brown --- Department of Zoology and Entomology, South Africa

     The use of burrows by springhares was investigated in the Eastern Cape, South Africa using radio telemetry. Springhares utilized 4–27 different burrows scattered over areas ranging from 0.6–28.5 ha, with maximum distances of 170–1000 m between burrows. Springhares frequently changed...

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246. 

     Are wild African lungfish obligate air breathers? Some evidence from radio telemetry

     Item type: Journal Article • Journal: African Zoology • Authors: C. M. Mlewa --- Department of Fisheries, Kenya J. M. Green --- Department of Biology, Canada A1B 3X9 R. Dunbrack --- Department of Biology, Canada A1B 3X9

     Laboratory studies have resulted in classification of the marbled African lungfish, Protopterus aethiopicus, as an obligate air-breather. However, there have been no investigations of the extent of dependence on aerial respiration by this species in the wild. We used radio...

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247. 

     West Africa’s Atlantic humpback dolphin (Sousa teuszii ): endemic, enigmatic and soon Endangered?

     Item type: Journal Article • Journal: African Zoology • Authors: Caroline R. Weir --- Ketos Ecology, U.K. Koen Van Waerebeek --- Conservation and Research of West African Aquatic Mammals, Ghana Thomas A. Jefferson --- Clymene Enterprises, U.S.A. Tim Collins --- Ocean Giants Program, Wildlife Conservation Society, U.S.A.

     Atlantic humpback dolphins (Sousa teuszii ) are endemic to nearshore West African waters between Western Sahara and Angola. They are considered Vulnerable by the International Union for Conservation of Nature based on restricted geographic range, low abundance and apparent decline...

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248. 

     Post-weaning social behaviour within mother–offspring groups of the bushveld gerbil, Gerbilliscus leucogaster: implications for dispersal

     Item type: Journal Article • Journal: African Zoology • Authors: Tracy K. Lötter --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South Africa Neville Pillay --- School of Animal, Plant and Environmental Sciences, University of the Witwatersrand, South Africa

     Social behaviour has been implicated in the natal dispersal of several small mammal species. We studied social interactions within groups of bushveld gerbil Gerbilliscus leucogaster mothers and their weaned offspring in captivity. We examined groups (n = 8) over several...

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249. 

     New evidence for a South Atlantic stock of humpback whales wintering on the Northwest African continental shelf

     Item type: Journal Article • Journal: African Zoology • Authors: Koen Van Waerebeek --- COREWAM-Senegal, Musée de la Mer, Senegal Abdoulaye Djiba --- COREWAM-Senegal, Musée de la Mer, Senegal Jens-Otto Krakstad --- Institute of Marine Research, Norway Abdellahi Samba Ould Bilal --- Institut Mauritanien des Recherches Océanographiques et des Pêches (IMROP), Mauritania Idrissa L. Bamy --- Centre National des Sciences Halieutiques de Boussoura (CNSHB), Guinea Amadeu Almeida --- Centro de Investigaç ão Pesqueira Aplicada (CIPA), Guinea-Bissau Ebou Mass Mbye --- Fisheries Department, The Gambia

     Seventeen confirmed and four probable sightings of humpback whales, Megaptera novaeangliae, were documented from platform-of-opportunity Research Vessel (R/V) Dr. Fridtjof Nansen in a passing-mode visual survey of continental shelf waters between Conakry and Cap Vert Peninsula (Dakar), 21 October -5...

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250. 

     A study of moult-site fidelity in Egyptian geese, Alopochen aegyptiaca, in South Africa

     Item type: Journal Article • Journal: African Zoology • Authors: Mduduzi Ndlovu --- Organisation for Tropical Studies/School of Animal, Plant and Environmental Sciences, University of Witwatersrand, South Africa Graeme S. Cumming --- Percy FitzPatrick Institute, DST/NRF Centre of Excellence, University of Cape Town, South Africa Philip A. R. Hockey --- Percy FitzPatrick Institute, DST/NRF Centre of Excellence, University of Cape Town, South Africa Mbongeni D. Nkosi --- Percy FitzPatrick Institute, DST/NRF Centre of Excellence, University of Cape Town, South Africa Gregory L. Mutumi --- Percy FitzPatrick Institute, DST/NRF Centre of Excellence, University of Cape Town, South Africa

     Little is known about moult and moult-site fidelity of African waterfowl. Satellite telemetry and uniquely engraved colour-rings were used to study moult-site fidelity of Egyptian geese marked at two sites in South Africa – Barberspan in the summer-rainfall region and...

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251. 

     Assessment of reproductive function in southern African spiny mice (Acomys spinosissimus) using faeces as hormone matrix

     Item type: Journal Article • Journal: African Zoology • Authors: P. Ruan de Bruin --- Department of Zoology and Entomology, South Africa Katarina Medger --- Department of Zoology and Entomology, South Africa Nigel C. Bennett --- Department of Zoology and Entomology, South Africa André Ganswindt --- Department of Zoology and Entomology, South Africa

     For spiny mice, detailed long-term data on reproductive endocrine function is lacking, as limited blood volumes make frequent collections of individual plasma samples for hormone monitoring impractical. To provide the necessary tools in order to fill this gap, this study...

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252. 

     Attitudes of women and men living with HIV and their healthcare providers towards pregnancy and abortion by HIV-positive women in Nigeria and Zambia

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ann M Moore --- The Guttmacher Institute, USA Akinrinola Bankole --- The Guttmacher Institute, USA Olutoin Awolude --- Department of Obstetrics and Gynaecology, College of Medicine, Nigeria Suzette Audam --- The Guttmacher Institute, USA Adesina Oladokun --- Department of Obstetrics and Gynaecology, College of Medicine, Nigeria Isaac Adewole --- Department of Obstetrics and Gynaecology, College of Medicine, Nigeria

     Fertility decisions among people living with HIV/AIDS (PLWHA) are complicated by disease progression, the health of their existing children and possible antiretroviral therapy (ART) use, among other factors. Using a sample of HIV-positive women (n = 353) and men (n...

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253. 

     Solving the challenges of monitoring mobile populations: insights from studies of waterbirds in southern Africa

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Hannah L Thomas --- Percy FitzPatrick Institute, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute, DST–NRF Centre of Excellence, South Africa Graeme S Cumming --- Percy FitzPatrick Institute, DST–NRF Centre of Excellence, South Africa

     Highly mobile species are difficult to monitor. It is often unclear from abundance estimates whether a population is genuinely declining or simply elsewhere. If the spatial and temporal scales of monitoring are inadequate, the data will only be useful if...

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254. 

     Dual parasitism of Fork-tailed Drongos by African and Jacobin Cuckoos

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Tom P Flower --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Benjamin J Ashton --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Elisabet Zöttl --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Ryan M Olinger --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST–NRF Centre of Excellence, South Africa

     Different species of brood parasitic birds, which lay their eggs in the nests of host foster-parents, rarely target the same host species population. We report brood parasitism of Fork-tailed Drongos Dicrurus adsimilis in the southern Kalahari Desert by both African...

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255. 

     A tool for identifying potential Eucalyptus nitens seed orchard sites based on climate and topography

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ilaria Germishuizen --- Institute for Commercial Forestry Research, South Africa Robin AW Gardner --- Institute for Commercial Forestry Research, South Africa

     Shy seed production in orchards of Eucalyptus nitens is a major barrier to the deployment of genetic gain in South African plantations. A machine learning method was used to identify optimal sites for the establishment of E. nitens seed orchards...

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256. 

     The California bearing ratio (CBR) of some mechanically stabilised laterite sub-base soils along the Ibadan-Oyo Road, Southwestern Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: P.A. Fasanmade --- Civil Engineering Department, Nigeria G.O. Adeyemi --- Geology Department, Nigeria E.O. Eze --- Civil Engineering Department, Nigeria

     Mechanical stabilisation by mixing one lateritic soil with another is not a popular subject of research, hence this study. Samples were taken from two locations along the Ibadan-Oyo Road in Southwestern Nigeria. The study focused on determining the California bearing...

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257. 

     Financial Information Systems: Teaching REA semantics within an Information Engineering framework

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: J. Callaghan --- Professor of Accounting, School of Business Administration, United States of America A. Savage --- Assistant Professor of Accounting, School of Business Administration, United States of America E. Peacock --- Professor of Accounting, School of Business Administration, United States of America

     The purpose of this paper is to describe how the accounting REA model can be incorporated into the Information Engineering set of methodologies in the Accounting or Financial Information Systems classroom. We contrast the traditional Information Engineering approach with one...

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258. 

     An analysis of underpricing and aftermarket performance of initial public offerings on the Alternative Exchange (AltX)

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: C. Correia --- Department of Accounting, G. Holman --- Department of Accounting,

     This paper reviews the international evidence of underpricing of Initial Public Offerings and analyses IPO underpricing by companies listing on the South African Alternative Exchange (AltX). Underpricing is indicated by measuring the percentage difference between the initial offer price and...

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259. 

     Cost contribution agreements: The South African tax implications of research and development costs incurred by multinationals participating in joint research projects with offshore associates

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Steyn --- Department of Management Accounting,

     Cost Contribution Agreements (CCAs) or cost sharing of research and development costs, is one of the vehicles sanctioned by tax authorities that may be used by multinational enterprise groups (MNEs) to develop and distribute intangible property among members of the...

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260. 

     Convergence to market efficiency: the case of seasoned equity offering stocks

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Han-Ching Huang --- Department of Finance, Business Building 404A, 4/F, Taiwan Yong-Chern Su --- Department of Finance, Taiwan Hsuan-Yin Wang --- Department of Finance, Taiwan

     This study examines the relationship between returns and contemporaneous and lagged-order imbalances by regression analysis. Conditional on contemporaneous imbalances, a significantly negative relationship is found between lagged-one imbalances and returns, except for a 10-minute time interval. This suggests that seasoned...

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261. 

     Philips’ application of current cost accounting until 1981

     Item type: Journal Article • Journal: De Ratione • Authors: M A van Hoepen R.A. --- University of Stellenbosch, I J Lambrechts --- University of Stellenbosch, F J Mostert --- University of Stellenbosch,

     The N.V. Philips’ Gloeilampenfabrieken has been applying current cost accounting since 1951. In doing so, various systems were chosen over the years. The example of Philips can therefore be seen as an empirical illustration of a number of ways according...

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262. 

     Philips’ application of current cost accounting since 1982

     Item type: Journal Article • Journal: De Ratione • Authors: M A van Hoepen --- University of Stellenbosch, I J Lambrechts --- University of Stellenbosch, F J Mostert --- University of Stellenbosch,

     The N.V. Philips’ Gloeilampenfabrieken has applied current cost accounting since 1951, In doing so, various systems were chosen over the years. The example of Philips can therefore be seen as an empirical illustration of a number of ways according to...

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263. 

     The Distribution Properties of the Financial Ratios of Listed South African Industrial Companies: 1980–1989

     Item type: Journal Article • Journal: De Ratione • Authors: W R Muil --- University of Stellenbosch, W D Hamman --- University of Stellenbosch, E vd M Smit --- University of Stellenbosch,

     Financial ratios are widely used tools in financial statement analysis, where often the assumption of normality in the ratio distributions has to be made. The article examines the distributions of nine financial ratios for listed South African industrial companies over...

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264. 

     The accounting function of John Company’s Cape of Good Hope factory 1812–1813, during the second British occupation of the Cape colony – observations and comments

     Item type: Journal Article • Journal: De Ratione • Authors: J G Samkin --- Department of Accountancy,

     This paper reviews and makes observations on the accounting functions of the Cape of Good Hope factory of the English East India Company during the period 1812–1813. In particular, the accounting records maintained by the Cape factory are examined. By...

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265. 

     Stock market responses to corporate unbundling in South Africa

     Item type: Journal Article • Journal: De Ratione • Authors: Geoffrey Blount --- Department of Business Economics, Sinclair Davidson --- Department of Economics and Finance,

     This paper examines the effect of the announcement of a restructuring on the returns of the parent companies and the subsidiaries to be unbundled. Abnormal returns are calculated from sixty days prior to the unbundling announcement to sixty days after...

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266. 

     Spatio-temporal variability of five surface water quality parameters in the Swartvlei estuarine lake system, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: IA Russell --- South African National Parks, South Africa

     Variability of salinity, temperature, pH, dissolved oxygen and turbidity in the temporarily open/closed Swartvlei estuarine system, measured from 1991 to 2013, was investigated at various temporal (seasonal, estuarine open/closed phase, long-term) and spatial (inter- and intra-waterbody) scales. Longitudinal pH and...

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267. 

     Aquatic macroinvertebrate responses to pollution of the Boesmanspruit river system above Carolina, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RB Tate --- Digby Wells Environmental, South Africa A Husted --- Digby Wells Environmental, South Africa

     The upper Boesmanspruit river system received much attention in 2012 when a pollution event in January rendered the drinking water of the town of Carolina non-potable. The responses of aquatic macroinvertebrate assemblages in the upper Boesmanspruit system to that event...

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268. Game consumption and attitudes to hunting in the Netherlands

     Item type: Journal Article • Journal: • Authors: Jan A. Schulp --- School of International Hospitality Management (IHM), Stenden University of Applied Sciences, Leeuwarden, The Netherlands Fabian Pettinga --- Stenden University of Applied Sciences, Leeuwarden, The Netherlands Pepijn Meester --- Stenden University of Applied Sciences, Leeuwarden, The Netherlands

     In the Netherlands, per capita game consumption is low, but during autumn and Christmas, many consumers eat game, once or twice. Restaurants supply a big share of this game. Anti-hunting activism is a potential threat for the supply of game and therefore,...

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269. 

     Aminoglycoside-induced hearing deficits – a review of cochlear ototoxicity

     Item type: Journal Article • Journal: South African Family Practice • Authors: L Petersen --- Division of Communication Sciences and Disorders, South Africa C Rogers --- Division of Communication Sciences and Disorders, South Africa

     This article aims to inform the reader about current knowledge of the effects of aminoglycosides on hearing. The hearing loss caused by aminoglycosides is permanent and can negatively affect the individual’s quality of life. Although treatment with aminoglycosides cannot be...

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270. 

     A framework for caring in physiotherapy education and practice

     Item type: Journal Article • Journal: South African Family Practice • Authors: Serela Ramklass --- School of Clinical Medicine, South Africa

     Background: Caring is central to the practice of physiotherapy. However, explicit components of caring required for South African physiotherapy practice within a model of primary healthcare are not detailed.

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271. 

     The role of community health workers in the re-engineering of primary health care in rural Eastern Cape

     Item type: Journal Article • Journal: South African Family Practice • Authors: Karl le Roux --- Zithulele Hospital, South Africa Ingrid M le Roux --- Philani Maternal, South Africa Nokwanele Mbewu --- Philani Maternal, South Africa Emily Davis --- Semel Institute and the Department of Psychiatry, USA

     Background: Primary Health Care in South Africa is being re-engineered to create a model of integrated care across different levels of the health care system. From hospitals to clinics, in the community and in the home, health care will focus...

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272. 

     Parental mediation of adolescent media use and demographic factors as predictors of Kenyan high school students’ exposure to sexual content in television

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Kyalo wa Ngula --- Department of Mass Communication, Hellen K. Mberia --- Department of Social Sciences and Humanities, Ann Neville Miller --- Nicholson School of Communication, USA

     Research in Western nations suggests that parents’ involvement in their children's media use can make a difference in how adolescents select, process and respond to sexual television messages. Little or no published research has investigated this issue in sub-Saharan Africa,...

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273. 

     CEO's use of financial and non-financial performance measures: Manufacturing companies in Mauritius and Australia compared

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: DW Taylor --- School of Accounting, Curtin University of Technology, Australia T Soobaroyen --- School of Management, University of Mauritius, C Ah-Hen --- School of Management, University of Mauritius,

     It is contended in a body of management accounting literature that financial performance measures are being rendered less relevant than non-financial measures in the management of companies. Such a management trend towards non-financial performance measures is particularly applicable to manufacturing...

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274. 

     Baited remote underwater video system (BRUVs) survey of chondrichthyan diversity in False Bay, South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L De Vos --- Marine Research Institute, Department of Biological Sciences, South Africa RGA Watson --- Marine Research Institute, Department of Biological Sciences, South Africa A Götz --- Elwandle Node, South African Environmental Observation Network (SAEON), South Africa CG Attwood --- Marine Research Institute, Department of Biological Sciences, South Africa

     Global declines in chondrichthyan populations necessitate evidence‑based planning for their conservation. False Bay, in south‑west South Africa, has a high diversity of marine biota, with Atlantic and Indian Ocean influences, but its chondrichthyan fauna is poorly described ecologically. False Bay...

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275. 

     Adherence by a primary healthcare clinic in KwaZulu-Natal to the national HIV guidelines

     Item type: Journal Article • Journal: South African Family Practice • Authors: Nnaemeka Uzodike --- Department of Family Medicine, South Africa Andrew Ross --- Department of Family Medicine, South Africa Ogbonnaya Harbor --- Department of Family Medicine, South Africa

     Background: The decentralisation of antiretroviral therapy (ART) to primary health care (PHC) was rolled-out in South Africa in March 2010. PHC staff members are expected to initiate ART, monitor patients, and detect and refer patients with adverse events or virological...

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276. 

     Doctors’ attitudes to and knowledge and usage of growth charts

     Item type: Journal Article • Journal: South African Family Practice • Authors: Selma Smith --- Department of Family Medicine, South Africa Elizabeth Reji --- Department of Family Medicine, South Africa

     Background: Growth charts have been used worldwide for about 40 years but their use has always been fraught with problems.

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277. 

     Four principles of South African political culture at the local level

     Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Robert Thornton --- Department of Anthropology,

     Standard models of political thought derived from Liberal, Democratic and Classical models of political theory do not appear to fully comprehend the structure and processes of political action and culture at the local-level in South Africa. I present a concise...

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278. 

     Inclusion of the ‘other’ into the fold: Early mission churches and society in Makweteng, Potchefstroom, South Africa

     Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Fanie (NS) Jansen van Rensburg --- North-West University,

     ‘Like the narrative of culture, the story of the past is [therefore] a selective account of the actual sequence of events, but it is no random selection’ (Hastrup 1992:9).

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279. 

     Grief-stricken: Zimbabwean children in everyday extremity and the ethics of research

     Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Ross Parsons --- Dept. Anthropology, USA

     The essay approaches ethics and research through a description of the beginnings of a study of children's lives under extreme adversity in the Manicaland province of contemporary Zimbabwe. An encounter with an orphaned child is described, highlighting the presence of...

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280. 

     The types and treatment outcomes of germ cell tumours of the ovary seen at Groote Schuur Hospital, Cape Town, between 1994 and 2008: a retrospective survey

     Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: K E A Mohammed --- Division of Radiation Oncology, A L van Wijk --- Division of Radiation Oncology,

     Objective: This retrospective observational study aims to review patients with malignant ovarian germ cell tumours (MOGCTs) treated at Groote Schuur Hospital over a 15-year period.

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281. 

     Fertility-sparing treatment in a young patient with complex atypical hyperplasia of the endometrium

     Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: G C Du Toit --- Unit of Gynaecological Oncology, Tygerberg Hospital, University of Stellenbosch,

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282. 

     Prospects of prepaid smart water metering in Harare, Zimbabwe

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Tazviona Richman Gambe --- Department of Rural and Urban Development, Zimbabwe

     Dilapidated water distribution networks and water theft have resulted in non-revenue water (NRW) being between 40% and 60% of available supplies, yet Harare Water (a department under the City of Harare responsible for water purification and distribution) is struggling to...

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283. 

     Pelagic eggs of marine fishes from Park Rynie, KwaZulu-Natal, South Africa: seasonal spawning patterns of the three most common species

     Item type: Journal Article • Journal: African Zoology • Authors: A.D. Connell --- Environmentek, South Africa

     For the period 1987 to 1998, pelagic eggs of marine fishes were collected from shelf waters at Park Rynie on the KwaZulu-Natal south coast. The three most numerous eggs collected were those of the mackerel Scomber japonicus,the sardine Sardinops sagax...

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284. 

     Uptake and distribution of copper in the freshwater crab Potamonautes perlatus (Crustacea) in the Eerste River, South Africa

     Item type: Journal Article • Journal: African Zoology • Authors: R.G. Snyman --- Department of Zoology, South Africa A.J. Reinecke [AN0001] J.A.J. Nel --- Department of Zoology, South Africa

     The uptake and distribution of copper in the freshwater crab Potamonautes perlatus in the Eerste River, South Africa, were studied seasonally by comparing copper concentrations in crabs, water and sediment at two localities, one upstream and one downstream from the...

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285. 

     An enclosure study to evaluate the effect of Sargochromis codringtoni on snail populations in an irrigation canal

     Item type: Journal Article • Journal: African Zoology • Authors: Jakob Brodersen --- Danish Bilharziasis Laboratory, Denmark Moses J. Chimbari†† --- Blair Research Laboratory, Zimbabwe Henry Madsen† --- Danish Bilharziasis Laboratory, Denmark

     The cichlid fish, Sargochromis codringtoni has been suggested as an alternative to the use of molluscicides for controlling schistosome intermediate host snails. To determine the effect of the fish on Bulinus globosus and Biomphalaria pfeifferi populations in irrigation canals, an...

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286. 

     Current distribution of the southern barred minnow, Opsaridium peringueyi (Pisces: Cyprinidae), in South Africa:Is there reason for concern?

     Item type: Journal Article • Journal: African Zoology • Authors: J.A. Venter --- School of Biological and Conservation Sciences, South Africa P.S.O. Fouché --- Zoology Department, South Africa W. Vlok --- Centre for Aquatic Research, Department of Zoology, South Africa

     In South Africa, relatively small, but healthy populations of Opsaridium peringueyi remain in the middle reaches of the Luvuvhu, Blyde, Sabie and Pongolo Rivers. The species may be extinct in some rivers like the Shingwedzi and lower-Olifants and its status...

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287. 

     Diatoms as water quality indicators in the upper reaches of the Great Fish River, Eastern Cape, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Holmes --- School of Biological Sciences, South Africa JC Taylor --- School of Biological Sciences, South Africa

     This study focused on the spring-fed upper reaches of the economically important Great Fish River with the aim of determining if diatoms could be used for biomonitoring in semi-arid conditions in southern Africa. Five sites were monitored monthly from 2010...

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288. 

     Occurrence, abundance and distribution of benthic macroinvertebrates in the Nyando River catchment, Kenya

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DA Abong'o --- Department of Chemistry, School of Physical Sciences, Kenya SO Wandiga --- Department of Chemistry, School of Physical Sciences, Kenya IO Jumba --- Department of Chemistry, School of Physical Sciences, Kenya PJ Van den Brink --- Aquatic Ecology and Water Quality Management Group, The Netherlands BB Naziriwo --- Department of Chemistry, Uganda VO Madadi --- Department of Chemistry, School of Physical Sciences, Kenya GA Wafula --- Department of Chemistry, School of Physical Sciences, Kenya P Nkedi-Kizza --- Soil and Water Science Department, USA H Kylin --- Department of Water and Environmental Studies, Sweden

     A baseline study was conducted of the occurrence of macroinvertebrates at 26 sites in the Nyando River catchment in 2005–2006. A total of 13 orders and 16 families of Arthropoda, Mollusca, Platyhelminthes and Annelida were collected, with the order Ephemeroptera...

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289. 

     Measuring and reporting on energy poverty: insights from West African countries

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Emmanuel W. Ramde --- Department of Mechanical Engineering, Ghana Patrick Nussbaumer --- United Nations Industrial Development Organization (UNIDO), Austria Morgan Bazilian --- United Nations Industrial Development Organization (UNIDO), Austria

     A reliable and comprehensive energy information base is required to set targets, design policies and programmes, as well as to enable citizens to make informed choices. Adequate national capacity to track progress towards universal modern energy access represents an especially...

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290. 

     Using independent nest survey data to validate changes in reporting rates of Martial Eagles between the Southern African Bird Atlas Project 1 and 2

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Arjun Amar --- DST–NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa Daniël Cloete --- DST–NRF Centre of Excellence at the Percy FitzPatrick Institute of African Ornithology, South Africa Madel Whittington --- Birds of Prey Programme, Endangered Wildlife Trust, Nossob camp, South Africa

     Repeat monitoring is vital to measure biodiversity change. However, monitoring protocols may change, as survey techniques improve or different questions are asked. Such modifications may cause difficulties when examining changes in wildlife populations. The Southern African Bird Atlas Project (SABAP)...

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291. 

     Person-environment fit, job satisfaction and intentions to leave: The moderating effect of leader empowering behaviour

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kleinjan Redelinghuys --- Department of Industrial Psychology, Optentia Research Focus Area, South Africa Elrie Botha --- Department of Industrial Psychology, Optentia Research Focus Area, South Africa

     This study sought to determine the possible indirect effect of person-environment (PE) fit on intentions to leave via job satisfaction and the moderating effect of leader empowering behaviour on job satisfaction and intentions to leave the work organisation. Participants were...

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292. 

     The nearest-plant method is robust and powerful enough for different survey teams to monitor change in mesic grassland species composition

     Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Alan Short --- Themeda Eco Consulting, South Africa Craig Morris --- Agricultural Research Council–Livestock Business Division, Range and Forage Unit, c/o School of Biological and Conservation Sciences, South Africa

     A long-term rangeland monitoring programme needs to employ a field survey technique that is practicable, precise, powerful enough to distinguish change, not prone to worker bias, and able to distinguish real change from operator error arising from staff turnover. These...

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293. 

     The number of symmetric colorings of the dihedral group D₃

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Iryna Kashuba --- Institute of Mathematics, University of S̃ao Paulo, Brazil Yuliya Zelenyuk --- School of Mathematics, South Africa

     We compute the number of symmetric r-colorings and the number of equivalence classes of symmetric r-colorings of the dihedral group D3.

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294. 

     An investigation of investors’ estimates of returns earned and the effect of anchoring on these estimations

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: G Dowie --- College of Accounting, South Africa G Willows --- College of Accounting, South Africa

     This study examines overconfidence and anchoring in an investing environment to determine if there is evidence of the phenomenon amongst a sample of academics at participating universities.

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295. 

     Heparin flush vs. saline flush for use in the maintenance of adult central venous and intra-arterial catheters: potential harm, too little gain?

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: GD Nethathe --- Intensive Care Unit, Chris Hani Baragwanath Academic Hospital, South Africa M Mbeki --- Department of Anaesthesia, Charlotte Maxeke Johannesburg Academic Hospital, South Africa

     Heparin saline use for the maintenance of invasive arterial and central lines may be associated with significant risks and has not been conclusively shown to confer additional benefits over saline flushing alone. The routine use of heparin saline flush instead...

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296. 

     Does the cellphone radio-frequency electromagnetic radiation during ringing or talking modes induce locomotor disturbance in Drosophila melanogaster?

     Item type: Journal Article • Journal: African Zoology • Authors: Mervat A Seada --- Zoology Department, Faculty of Science, Egypt Samar E Elkholy --- Zoology Department, Faculty of Science, Egypt Wesam S Meshrif --- Zoology Department, Faculty of Science, Egypt

     Debate regarding the biological effect of electromagnetic radiation has been recently raised. The effects of this radiation on locomotor activity are not well known. Hence, in this study, we used Drosophila melanogaster as a model organism to investigate the possible...

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297. 

     Spatial characterisation of the Benguela ecosystem for ecosystem-based management

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa L Blamey --- Marine Research Institute, South Africa T Lamont --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa JG Field --- Marine Research Institute, South Africa G Bianchi --- Food and Agriculture Organization, Italy JA Huggett --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa L Hutchings --- Marine Research Institute, South Africa J Jackson-Veitch --- Marine Research Institute, South Africa A Jarre --- Marine Research Institute, South Africa C Lett --- Institut de Recherche pour le Développement [IRD], UMR MARBEC 248, France MR Lipiński --- Department of Ichthyology and Fisheries Science, South Africa SW Mafwila --- Department of Fisheries and Aquatic Sciences, Namibia MC Pfaff --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa T Samaai --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa LJ Shannon --- Marine Research Institute, South Africa Y-J Shin --- Marine Research Institute, South Africa CD van der Lingen --- Marine Research Institute, South Africa D Yemane --- Marine Research Institute, South Africa

     The three countries of the Benguela Current Large Marine Ecosystem (BCLME), namely Angola, Namibia and South Africa, have committed to implementing ecosystem-based management (EBM) including an ecosystem approach to fisheries (EAF) in the region, to put in practice the principles...

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298. 

     Age and growth of Cape stumpnose Rhabdosargus holubi (Pisces: Sparidae) in the Eastern Cape, South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MW Farthing --- Department of Ichthyology and Fisheries Science, South Africa NC James --- South African Institute for Aquatic Biodiversity, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South Africa

     Rhabdosargus holubi is a small (maximum weight=2.4 kg) yet important fishery species in the estuaries of the south-east coast of South Africa. Little is known of its biology and specifically its growth rate, which is essential for sustainable management of the...

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299. 

     Development and characterisation of a modified multi-purpose pine oil detergent for a small-scale manufacturer in Lesotho

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mosotho George --- Chemistry and Chemical Technology, Lesotho Ts'ukulu Motsamai --- Chemistry and Chemical Technology, Lesotho

     The interest in small-scale manufacturing of simple products seems to be growing in Lesotho. However, this could have undesirable effects without insights into the chemical processes involved in such presumed simple processes. This manuscript reports the partnership between the National...

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300. Diversity and inclusion as indicators of sustainable human resources management in the international hospitality industry

     Item type: Journal Article • Journal: • Authors: Sjoerd Gehrels --- Innovation in Hospitality, Stenden Academy of International Hospitality Research, Stenden Hotel Management School, Stenden University of Applied Sciences, Leeuwarden, The Netherlands Javed Suleri --- Stenden University of Applied Sciences, Leeuwarden, The Netherlands

     This research paper discusses the notion of sustainable human resources management (SHRM). In order to deal with current and expected talent deficiencies for the international hospitality industry, innovating approaches to HRM are highly needed. An important focus within SHRM in...

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301. Food waste reduction at Restaurant De Pleats: Small steps for mankind

     Item type: Journal Article • Journal: • Authors: Geesje Duursma --- Restaurant De Pleats, Burgum, The Netherlands Femke Vrenegoor --- Stenden Research Group Sustainability in Hospitality and Tourism, Stenden Hotel Management School, Leeuwarden, The Netherlands Sytze Kobus --- Restaurant De Pleats, Burgum, The Netherlands

     Every year, large quantities of food are thrown away in the catering industry. Restaurant De Pleats therefore started a pilot study for twelve days to weigh all discarded carrots, chips and bread in order to determine food waste within the...

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302. 

     Audiological testing for ototoxicity monitoring in adults with tuberculosis in state hospitals in Gauteng, South Africa

     Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Katijah Khoza-Shangase --- Department of Speech, Pathology and Audiology, School of Human and Community Development, South Africa Megan Stirk --- Department of Speech, Pathology and Audiology, School of Human and Community Development, South Africa

     Background: Ototoxicity monitoring during treatment of medical conditions, where the medications used are known to be toxic to the ear, is an important scope of practice of the audiologist; and, is an important clinical service aimed at enhancing patients’ quality...

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303. 

     Characterisation of a Tunisian coastal lagoon through hyperspectral underwater irradiance

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DH Nourisson --- Department of Biology, Italy F Scapini --- Department of Biology, Italy L Massi --- Department of Biology, Italy L Lazzara --- Department of Biology, Italy

     North African coastal lagoons are unique ecosystems that often suffer degradation due to human activities. Therefore, monitoring methods are required to identify stressors and assist with the management of these valuable and often understudied ecosystems. A synthetic indicator of water...

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304. 

     α-Baer rings and some related concepts via C(X)

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.R. Aliabad --- , , Iran A. Taherifar --- , , Iran N. Tayarzadeh --- , , Iran

     We call a commutative ring R an F IN -ring (resp., F SA-ring) if for any two finitely generated I, J ⊴R we have Ann(I)+Ann(J )=Ann(I∩J ) (resp., there is K ⊴ R such that Ann(I)+Ann(J )=Ann(K)). Moreover, we extend...

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305. 

     Monitoring eucalypt bud temperature using mobile temperature loggers

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Robin AW Gardner --- Institute for Commercial Forestry Research, South Africa Michael J Savage --- Agrometeorology Discipline, School of Agricultural, Earth and Environmental Sciences, South Africa Isa Bertling --- Horticultural Science Discipline, School of Agricultural, Earth and Environmental Sciences, South Africa

     Winter chilling is a key environmental trigger of floral induction in temperate Eucalyptus. Over the past two decades, considerable site × eucalypt flowering interaction research has been undertaken over a range of high elevation (>1 100 m asl) forestry sites in...

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306. 

     Alcohol consumption and cardiovascular disease risk in an African population in transition: the Prospective Urban and Rural Epidemiology (PURE) study

     Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Pt Pisa --- Centre of Excellence for Nutrition, South Africa A Kruger --- Centre of Excellence for Nutrition, South Africa Hh Vorster --- Centre of Excellence for Nutrition, South Africa Bm Margetts --- Institute of Human Nutrition, United Kingdom T Loots Du --- Centre of Excellence for Nutrition, South Africa

     Objective: There is evidence showing a cardioprotective effect of light to moderate alcohol consumption in many populations. Whether alcohol consumption reduces cardiovascular disease (CVD) risk in an African population remains unclear. This study therefore assessed the associations between alcohol consumption...

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307. 

     Knowledge and perceptions of nursing staff on the new Road to Health Booklet growth charts in primary healthcare clinics in the Tygerberg subdistrict of the Cape Town metropole district

     Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: I Cloete --- False Bay Hospital, L. Daniels J Jordaan --- Gordonia Hospital, C Derbyshire L Volmink --- Wesfleur Hospital Division of Human Nutrition, Faculty of Medicine and Health Science, C Schubl --- Division of Human Nutrition,

     Objectives: The objectives of the study were to assess the perceptions of nursing staff on the Road to Health Booklet (RTHB), to assess their knowledge of the RTHB growth charts, and to determine whether the level of knowledge was acceptable...

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308. 

     Electricity insufficiency in Africa: A product of inadequate manufacturing capacity

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Williams S. Ebhota --- Discipline of Mechanical Engineering, South Africa Freddie L. Inambao --- Discipline of Mechanical Engineering, South Africa

     Energy availability is fundamental and crucial for human survival and for national economic development. Energy consumption per capita of a country or region is a measure of quality of life and industrialisation of a country or region. This to certain...

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309. 

     Cape Vulture Gyps coprotheres breeding status in southern Africa: monitoring results from 2010–2014

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kerri Wolter --- VulPro NPO, South Africa Walter Neser --- VulPro NPO, South Africa Margaret T Hirschauer --- VulPro NPO, South Africa Alvaro Camiña --- ACRENASL Environmental Consultants, Spain

     Monitoring of eight Cape Vulture Gyps coprotheres breeding colonies in South Africa and Botswana took place between 2010 and 2014 using standardised counting methods. Counts of breeding pairs, nestlings and fledglings were used to calculate breeding success and general population...

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310. 

     Seasonal elevational movements of Eastern Olive Sunbird Cyanomitra olivacea in the Uluguru Mountains, Tanzania

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Chacha Werema --- Department of Zoology and Wildlife Conservation, Tanzania

     Little is known about the seasonal elevational movements for most tropical avifauna species. Seasonal elevational movements of the Eastern Olive Sunbird Cyanomitra olivacea were studied along an elevational gradient from 600 to 1 500 m above sea level in the Uluguru...

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311. 

     Effects of self-monitoring of blood glucose on diabetes control in a resource-limited diabetic clinic

     Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Pillay --- Department of Internal Medicine, South Africa C Aldous --- School of Clinical Medicine, South Africa

     Background: Diabetes mellitus places an enormous burden upon both patients and countries’ health systems. Integral to achieving control is patients assuming responsibility for their condition. Self-monitoring of blood glucose (SMBG) can serve as a powerful tool modifying lifestyle behaviour and...

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312. 

     Modelling the effects of petroleum product contaminated sand on the compressive strength of concretes using fuzzy logic and artificial neural networks: A case study of diesel

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Chidozie Chukwuemeka Nwobi-Okoye --- Faculty of Engineering, Nigeria Ikechukwu Etienne Umeonyiagu --- Department of Civil Engineering, Nigeria

     In this study an artificial neural network (ANN) and fuzzy logic (FL) were used to predict the compressive strength of concrete produced with diesel contaminated sand. Concrete was produced using sand contaminated with diesel at 0, 0.5, 1, 1.5, 2,...

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313. 

     Genetic monitoring of ex situ African Penguin (Spheniscus demersus) populations in South Africa

     Item type: Journal Article • Journal: African Zoology • Authors: Christiaan Labuschagne --- Department of Genetics, South Africa Lisa Nupen --- National Zoological Gardens of South Africa, South Africa Antoinette Kotzé --- Department of Genetics, South Africa J Paul Grobler --- Department of Genetics, South Africa Desiré L Dalton --- Department of Genetics, South Africa

     The African Penguin (Spheniscus demersus) has suffered population declines and is listed in the IUCN Red List as Endangered. The species is endemic to the coast of southern Africa, and breeding colonies are distributed on the south-western coast of Africa...

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314. 

     Does the exclusion of meiofauna affect the estimation of biotic indices using stream invertebrates?

     Item type: Journal Article • Journal: African Zoology • Authors: John G Mbaka --- Biological Sciences Department, Kenya Charles M M’Erimba --- Biological Sciences Department, Kenya Henry T Karanja --- Natural Resources Department, Kenya Jude M Mathooko --- Global Research Akademic and Mentoring Services, Kenya Mercy W Mwaniki --- Department of Geomatic Engineering and Geospatial Information Sciences, Kenya

     Biomonitoring of rivers is usually undertaken using information based on macroinvertebrate assemblages. However, exclusion of meiofauna (i.e. invertebrates less than 0.5 mm in size) when sorting benthic invertebrates can affect the estimation of densities and other biotic indices. In the present...

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315. 

     Online mentoring in medical education

     Item type: Journal Article • Journal: South African Family Practice • Authors: Kieran Walsh --- BMJ Learning, BMJ Publishing Group, UK

     Online mentoring offers a number of advantages in medical education. These advantages can help both mentors and mentees. The main advantages of online mentoring are that: it is much more likely to be learner or mentee centric than traditional forms...

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316. 

     Efficacy and deficiencies of rapid biomonitoring in biodiversity conservation: a case study in South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HM Barber-James --- Department of Freshwater Invertebrates, South Africa LL Pereira-da-Conceicoa --- Department of Zoology and Entomology, South Africa

     Rapid biomonitoring protocols, using biotic indices based on macroinvertebrate diversity to assess river ecosystem health, are widely used globally. Such quick assessment techniques are lauded for the rapid results obtained and the relatively easy protocol used to achieve an answer...

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317. 

     Monitoring the recovery of a previously exploited surf-zone fish community in the St Lucia Marine Reserve, South Africa, using a no-take sanctuary area as a benchmark

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute, South Africa H Winker --- South African National Biodiversity Institute, South Africa JQ Maggs --- Oceanographic Research Institute, South Africa SN Porter --- Oceanographic Research Institute, South Africa

     Limiting accessibility to a fishing area can reduce fishing effort effectively and may therefore promote local recovery of depleted stocks. In January 2002, beach driving was banned in South Africa, thereby reducing angler access to large areas of the coastline,...

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318. 

     Making the childfree choice: Perspectives of women living in South Africa

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Primrose Z. J. Bimha --- Gender Studies, School of African & Gender Studies, Anthropology & Linguistics, South Africa Rachelle Chadwick --- Gender Studies, School of African & Gender Studies, Anthropology & Linguistics, South Africa

     This article explores heterosexual childfree women’s decisions and the ways in which they negotiate their childfree identity in the context of pronatalist expectations. A convenience sample of seven women living in South Africa were interviewed about their rationale and experience...

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319. 

     Child Abuse or Discipline? Moses Isegawa’s Critique of Ugandan Child-rearing Practices in Abyssinian Chronicles

     Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Edgar Nabutanyi --- Department of Literature, Uganda

     Although Moses Isegawa’s debut novel, Abyssinian Chronicles, has received popular recognition in the press, it is yet to attract commensurate critical attention in literary scholarship. No wonder the available critical analyses of this important Ugandan text focus on only its...

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320. 

     Macroinvertebrates as bioindicators of water quality in the Mkondoa River, Tanzania, in an agricultural area

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Shimba --- Department of Biotechnology and Bioinformatics, FE Jonah --- Department of Fisheries and Aquatic Sciences, Ghana

     The suitability of using macroinvertebrates as bioindicators of stream water quality was tested in the Mkondoa River in an agricultural area at Kilosa, using the rapid bioassessment protocol. The family biotic index (FBI) showed marked variation in water quality along...

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321. 

     Using stable isotope analysis to study the diet of Gilchristella aestuaria larvae: preliminary insights into the foodwebs of six South African estuaries

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Costalago --- Department of Ecology, Environment and Plant Sciences, Sweden NAF Miranda --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Zoology, South Africa NA Strydom --- Department of Zoology, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, Department of Zoology, South Africa

     South African estuarine systems are becoming increasingly altered by anthropogenic and environmental factors, but the consequences of such changes for these systems are still not fully understood. The most common approach for evaluating the ecological status of aquatic systems is...

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322. 

     Stress steroid levels and the short-term impact of routine dehorning in female southern white rhinoceroses (Ceratotherium simum simum)

     Item type: Journal Article • Journal: African Zoology • Authors: Marcha Badenhorst --- Endocrine Research Laboratory, Department of Anatomy and Physiology, South Africa Michelle Otto --- Buffalo Dream Ranch Wildlife Veterinary Services, South Africa Annemieke C van der Goot --- Lapalala Wilderness, South Africa André Ganswindt --- Endocrine Research Laboratory, Department of Anatomy and Physiology, South Africa

     Rhinoceros populations in Africa are under severe threat as a result of surging poaching rates and risk-mitigation strategies are continuously adapted in an attempt to ensure the survival of the species. This study compared faecal glucocorticoid metabolite (fGCM) levels of...

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323. 

     Seasonally and spatially referenced estimates of recreational shore-angling effort, catch composition, catch rates and total catch in the Goukamma Marine Protected Area, South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CG Attwood --- Department of Biological Sciences, South Africa CS van Zyl --- Department of Nature Conservation, Faculty of Natural Resource Management, South Africa AT Lombard --- Institute for Coastal and Marine Research, Nelson Mandela Metropolitan University, South Africa C McCagh --- School of Animal Biology, Faculty of Natural and Agricultural Sciences, Australia

     A roving creel survey of the recreational shore fishery along the 16.4-km coastline in the Goukamma Marine Protected Area on the south coast of South Africa was conducted from 2009 to 2011. Some 838 patrols were stratified equally among months,...

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324. 

     Food and wine pairing: A new approach

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Peter Klosse --- Academie voor Gastronomie, Hotel Gastronomique De Echoput, Netherlands

     Flavour can be assessed objectively with the use of the newly developed flavour styles theory. In this approach, flavour is structured on the parameters contracting mouthfeel, coating mouthfeel and flavour richness. The result is the flavour styles cube. The eight...

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325. 

     Game consumption and attitudes to hunting in the Netherlands

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Jan A. Schulp --- School of International Hospitality Management (IHM), Stenden University of Applied Sciences, The Netherlands Fabian Pettinga --- Stenden University of Applied Sciences, The Netherlands Pepijn Meester --- Stenden University of Applied Sciences, The Netherlands

     In the Netherlands, per capita game consumption is low, but during autumn and Christmas, many consumers eat game, once or twice. Restaurants supply a big share of this game. Anti-hunting activism is a potential threat for the supply of game...

     View item »
326. 

     Food waste reduction at Restaurant De Pleats: Small steps for mankind

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Geesje Duursma --- Restaurant De Pleats, The Netherlands Femke Vrenegoor --- Stenden Research Group Sustainability in Hospitality and Tourism, The Netherlands Sytze Kobus --- Restaurant De Pleats, The Netherlands

     Every year, large quantities of food are thrown away in the catering industry. Restaurant De Pleats therefore started a pilot study for twelve days to weigh all discarded carrots, chips and bread in order to determine food waste within the...

     View item »
327. 

     Diversity and inclusion as indicators of sustainable human resources management in the international hospitality industry

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sjoerd Gehrels --- Innovation in Hospitality, Stenden Academy of International Hospitality Research, Stenden Hotel Management School, The Netherlands Javed Suleri --- Stenden University of Applied Sciences, The Netherlands

     This research paper discusses the notion of sustainable human resources management (SHRM). In order to deal with current and expected talent deficiencies for the international hospitality industry, innovating approaches to HRM are highly needed. An important focus within SHRM in...

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328. 

     What drives customers to use access-based sharing options in the hospitality industry?

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Can Lu --- Department of Human Sciences, USA Jay Kandampully --- Department of Human Sciences, USA

     Access-based sharing businesses have gained popularity in the hospitality industry. The recent shift of customers’ willingness to share accommodation with a host as opposed to using a private hotel room has many implications for the traditional lodging sector. Sharing firms...

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329. 

     An examination of boundary value transmission problem with quadratic spectral parameter

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Guler Basak Oznur --- Gazi University, Turkey Yelda Aygar --- Ankara University, Turkey Nazlim Deniz Aral --- Bitlis Eren University, Turkey

     The main purpose of this study is to examine the properties of scattering solutions and scattering function of a difference equation subject to eigenparameter-dependent boundary and transmission conditions. In general, we are interested in a boundary value problem (BVP) generated...

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330. 

     A new health care profession in rural district hospitals: a case study of the introduction of Clinical Associates in Shongwe hospital

     Item type: Journal Article • Journal: South African Family Practice • Authors: M Bac --- Faculty of Health Sciences, Department of Family Medicine, School of Medicine, South Africa JMA Hamm --- Faculty of Health Sciences, Department of Family Medicine, School of Medicine, South Africa PC van Bodegraven --- Faculty of Health Sciences, Department of Family Medicine, School of Medicine, South Africa B Pater --- Faculty of Health Sciences, Department of Family Medicine, School of Medicine, South Africa JM Louw --- Faculty of Health Sciences, Department of Family Medicine, School of Medicine, South Africa

     Background: One of the reasons to develop training courses for medical mid-level workers in South Africa is a shortage of doctors. The introduction of this new profession has led to task sharing and redefining of professional boundaries. The primary aim...

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331. 

     Movement patterns and survival estimates of Blue Cranes in the Western Cape

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Julia L van Velden --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa Res Altwegg --- Department of Statistical Sciences, South Africa Kevin Shaw --- CapeNature, South Africa Peter G Ryan --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, South Africa

     The Western Cape population of Blue Cranes Anthropoides paradiseus is the species’ largest and most stable population. How this population utilises the agricultural landscape of the Western Cape, how far individuals disperse and the connectivity between subpopulations is unknown. Basic...

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332. 

     Migration flyway of the Mediterranean breeding Lesser Crested Tern Thalasseus bengalensis emigratus

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdulmaula Hamza --- School of Marine and Environmental Sciences, Malaysia Nicola Baccetti --- Istituto Superiore per la Protezione e la Ricerca Ambientale, Italy Joe Sultana --- BirdLife Malta, Malta Jaber Yahia --- Zoology Department, Faculty of Science, Libya Marco Zantello --- Istituto Superiore per la Protezione e la Ricerca Ambientale, Italy Adriano de Faveri --- Istituto Superiore per la Protezione e la Ricerca Ambientale, Italy Nick Cutts --- Institute of Estuarine and Coastal Studies, UK John Borg --- BirdLife Malta, Malta Hichem Azafzaf --- Regional Activity Centre for Specially Protected Areas, Tunisia Pierre Defos du Rau --- Office National de la Chasse et de la Faune Sauvage, France Esam Bourass --- Nature Conservation Department, Libya Khaled Etayeb --- Zoology Department, Faculty of Sciences, Libya Michael Elliott --- Institute of Estuarine and Coastal Studies, UK

     The Lesser Crested Tern Thalasseus bengalensis emigratus breeding population in the Mediterranean is found exclusively in Libya, on the two coastal islands of Gara and Elba and one wetland on the mainland coast at Benghazi. In order to improve knowledge...

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333. 

     Stabilization of lateritic soil with pulverized palm kernel shell (PPKS) for road construction

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Adeyemi Adeboje --- Department of Civil Engineering, South Africa Williams Kupolati --- Department of Civil Engineering, South Africa Emmanuel Sadiku --- Department of Chemical, Metallurgical and Materials Engineering, South Africa Julius Ndambuki --- Department of Civil Engineering, South Africa Chewe Kambole --- Department of Civil Engineering, South Africa Oladapo Ogunleye --- Department of Civil and Environmental Engineering, Nigeria

     This paper discusses the stabilization of lateritic soil with pulverized palm kernel shell (PPKS), an agricultural waste, for road construction. Samples of lateritic soil with the addition of 5.00–12.50% PPKS at an increment of 2.50% were prepared for index and...

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334. 

     Equilibrium sorption isotherms of Moringa oleifera leaves at different temperatures

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sunday Samuel Sobowale --- Department of Food Technology, Nigeria Moruf Olanrewaju Oke --- Department of Food Science and Engineering, Nigeria Lukumon Ayinde Odunmbaku --- Department of Food Technology, Nigeria Oluwafemi Ayodeji Adebo --- Department of Biotechnology and Food Technology, Faculty of Science, South Africa

     Adsorption and desorption isotherms for Moringa oleifera leaves were investigated using concentrated H2SO4 solutions to vary the micro-climate over different temperatures (27, 32, 37°C) and water activity (aw) (0.1–0.8). Plots of equilibrium moisture content (EMC) against aw were used to...

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335. 

     Section 12M contributions in terms of the Income Tax Act No. 58 of 1962: Normal tax implications for the retired employee

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E van Wyk --- School of Accountancy, Faculty of Economic and Management Sciences, M Terblanche --- Ducharme Consulting, South Africa

     Section 12M of the Income Tax Act No. 58 of 1962 allows a normal tax deduction for employers who pay the post-retirement medical contributions by way of lump sum payments on behalf of retired employees. Although a full deduction is...

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336. 

     Long-run adjustment of size, value, momentum and growth premium in equity returns: Evidence from South Asian emerging markets

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Adnan Shoaib --- Management Sciences, Pakistan Muhammad Ayub Siddiqui --- FAST School of Management, Pakistan

     This study scrutinizes the long-run adjustment of risk premiums in equity returns of the emerging stock markets of Pakistan, China and India, the three emerging South Asian economies, by keeping in view leading contributions of the Fama and French (1992)...

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337. 

     A study on the awareness level of additive manufacturing technology in south-western Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: P.K. Farayibi --- Department of Mechanical Engineering, Nigeria T.E. Abioye --- Department of Mechanical Engineering, Nigeria

     In this paper, the level of awareness of AM/RP technology in south-western Nigeria was investigated and presented. In a survey, copies of a questionnaire were administered to sixty (60) engineering personnel in research/tertiary institutions in the south-western states in Nigeria...

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338. 

     Manufacturing sector productivity growth drivers: Evidence from SADC member states

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Douglas Chikabwi --- Faculty of Commerce, Department of Economics, Zimbabwe Clainos Chidoko --- Faculty of Commerce, Department of Economics, Zimbabwe Calvin Mudzingiri --- Department of Economics, South Africa

     This study investigates major drivers of manufacturing sector productivity growth of selected Southern African Development Community (SADC1) member countries. Using country-specific, fixed effects panel data modelled in a Cobb Douglas production function for the period 2000–2013, the study estimated manufacturing...

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339. 

     Periphytic diatom communities in tributaries around Lake Ichkeul, northern Tunisia: a preliminary assessment

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Ouchir --- Department of Earth Sciences F.S.B, Tunisia S Morin --- Unité de Recherche EABX, France L Ben Aissa --- Department of Earth Sciences F.S.B, Tunisia M Boughdiri --- Department of Earth Sciences F.S.B, Tunisia A Aydi --- Department of Earth Sciences F.S.B, Tunisia

     An initial inventory of diatom biodiversity at 12 sites draining into Lake Ichkeul, northern Tunisia, was performed in summer 2014, together with the characterisation of metal pollution status by analysing trace metal concentrations to determine Water Quality Indices. The maximum...

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340. 

     Use of a chimeric transgene construct to confer broad resistance in zucchini (Cucurbita pepo L.) plants against cucurbit-infecting potyviruses occurring in KwaZulu-Natal, South Africa

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jacques D Ibaba --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa Benice J Sivparsad --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa Mark D Laing --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa Augustine Gubba --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa

     The frequent identification of cucurbit-infecting viruses across the province of KwaZulu-Natal (KZN) in South Africa necessitates developing effective methods of controlling these diseases. Putative transgenic baby marrow (Cucurbita pepo L.) plants resistant to Zucchini yellow mosaic virus (ZYMV), Moroccan watermelon...

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341. 

     Vegetative growth of Amaranthus hybridus and Amaranthus tricolor under different watering regimes in different seasons in southern Mozambique

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jerónimo EMM Ribeiro --- Department of Agronomy, South Africa Petrus J Pieterse --- Department of Agronomy, South Africa Sebastião I Famba --- Faculty of Agronomy and Forestry Engineering, Mozambique

     Drought-tolerant crops with high nutritional value such as amaranth leafy vegetables have the potential to improve the diet of rural communities in dry semi-arid areas of southern Mozambique. A study was conducted aiming to assess the vegetative growth and leaf...

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342. 

     Moringa (Moringa oleifera) leaf extracts inhibit spore germination of Alternaria solani, causal agent of early blight disease of tomato (Solanum lycopersicum)

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Culver Mvumi --- Department of Plant Production and Soil Science, South Africa Elizabeth Ngadze --- Department of Crop Science, Zimbabwe Diana Marais --- Department of Plant Production and Soil Science, South Africa Elsa S du Toit --- Department of Plant Production and Soil Science, South Africa Brighton M Mvumi --- Department of Soil Science and Agricultural Engineering, Zimbabwe

     Alternaria solani is highly infective and can sporulate on tomato at 13.2 × 106 spores mL−1. The fungicidal effect of Moringa oleifera leaf chloroform and aqueous extracts (MLCE and MLAE, respectively) was investigated in vitro to determine the inhibitory effect...

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343. Growth and phenology of a three- to four-year-old Sclerocarya birrea international provenance trial in Malawi

     Item type: Journal Article • Journal: Southern Hemisphere Forestry Journal • Authors: PW Chirwa RJ Bwanali G Meke W Sagona CRY Munthali L Mwabumba

     Indigenous wild fruits of Sclerocarya birrea have been used to supplement diets in time of critical food shortage, generate income when sold and as a source of raw materials for natural food-based industries in many developing countries. However, the widespread...

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344. 

     HIV/AIDS prevention support resourcing with family and peers: University student perspectives

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Alfred Motalenyane Modise --- Faculty of Education, South Africa

     This study explored how students construct family and peers as resources for their HIV prevention. The participants were 20 education students from a South African technology education university (female = 60%, black = 85%; age range = 18 to 24)...

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345. 

     Greenhouse gas inventory: A case of gas flaring operations in Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Solomon O. Giwa --- Department of Agricultural and Mechanical Engineering, Nigeria Abayomi T. Layeni --- Department of Agricultural and Mechanical Engineering, Nigeria Collins N. Nwaokocha --- Department of Agricultural and Mechanical Engineering, Nigeria Musedik A. Sulaiman --- Department of Agricultural and Mechanical Engineering, Nigeria

     Inventories of the greenhouse gases (GHGs) emitted into the atmosphere through gas flaring are scarce; hence, the need for this study. Formulae reported by the Association of Petroleum Institute were used for estimating GHGs based on data (1965 to 2013)...

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346. 

     Effectiveness of Moringa oleifera seed as a coagulant in domestic wastewater treatment

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: K. A. Adeniran --- Department of Agricultural and Biosystems Engineering, Nigeria T. D. Akpenpuun --- Department of Agricultural and Biosystems Engineering, Nigeria B. A. Akinyemi --- Department of Agricultural and Biosystems Engineering, Nigeria R. A. Wasiu --- Department of Agricultural and Biosystems Engineering, Nigeria

     An investigation on the effectiveness of Moringa oleifera seed for the treatment of domestic sewage was carried out in 15 litres plastic pots. Completely randomized design (CRD) experimental design was adopted. The treatments included: the control culture (no Moringa seed),...

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347. 

     Comparison of infrared thermography and miniature Deltatron accelerometer sensors in the measurement of structural vibration characteristics

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Stephen M. Talai --- Department of Mechanical Engineering, South Africa Dawood A. Desai --- Department of Mechanical Engineering, South Africa P. Stephan Heyns --- Department of Mechanical and Aeronautical Engineering, South Africa

     This paper investigates the comparison of infrared thermography (IRT) and miniature Deltatron accelerometer sensors in measuring structural vibration characteristics in terms of frequency and displacement, given that of age IRT has fully grown for temperature condition monitoring. In addition, IRT...

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348. 

     SAFRING longevity and movement records for southern African vultures (subfamilies Aegypiinae and Gypaetinae)

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Dane M Paijmans --- Animal Demography Unit, Department of Biological Sciences, South Africa Sarah Catto --- Animal Demography Unit, Department of Biological Sciences, South Africa H Dieter Oschadleus --- Animal Demography Unit, Department of Biological Sciences, South Africa

     Longevity and displacement records aid in the understanding of animal senescence and the possible range of a species. Within wild populations this information is infrequent with most longevity reports being based on captive individuals and displacements being calculated from few...

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349. 

     Utilization of pulverized cow bone (PCB) for stabilizing lateritic soil for road work

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Adeyemi Adeboje --- Department of Civil Engineering, South Africa Williams Kupolati --- Department of Civil Engineering, South Africa Rotimi Sadiku --- Department of Chemical, Metallurgical and Materials Engineering, South Africa Julius Ndambuki --- Department of Civil Engineering, South Africa Dolapo Yussuf --- Department of Civil and Environmental Engineering, Nigeria Chewe Kambole --- Department of Civil Engineering, South Africa

     This research explored the possibility of improving the engineering properties of lateritic soil with pulverized cow bone (PCB), a processed animal waste obtained from slaughtered cows, for road construction. The effects of PCB on the lateritic soil samples were evaluated...

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350. 

     Engineering research profile of countries in the African Union

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Swapan Kumar Patra --- Business School, Tshwane University of Technology, South Africa Mammo Muchie --- DST/NRF SARChI Professor, South Africa

     Scholarly publication output of engineering research from the member countries of the African Union (AU) are mapped using scholarly publication data from the Scopus® database of Elsevier. The countries are ranked based on various parameters, for example; number of publications,...

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351. 

     The ecological integrity of the Lower Olifants River, Limpopo province, South Africa: 2009–2015 – Part A: Olifants River main stem

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SM Marr --- South African Institute for Aquatic Biodiversity, South Africa TD Mohlala --- SAEON Ndlovu Node, Kruger National Park, South Africa A Swemmer --- SAEON Ndlovu Node, Kruger National Park, South Africa

     The major rivers of the South African ‘Lowveld’ (low-latitude savanna) suffer numerous impacts from upstream economic activities. Whereas monitoring these rivers is required to detect biodiversity losses, record pollution events and devise mitigation strategies, current monitoring programmes are inadequate. In...

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352. 

     The ecological integrity of the lower Olifants River, Limpopo province, South Africa: 2009–2015 – Part B: Tributaries of the Olifants River

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SM Marr --- South African Institute for Aquatic Biodiversity, South Africa TD Mohlala --- SAEON Ndlovu Node, Kruger National Park, South Africa A Swemmer --- SAEON Ndlovu Node, Kruger National Park, South Africa

     Monitoring on the Lowveld reaches of the Olifants River, Limpopo River System, and its Steelpoort, Blyde, Klaserie and Selati tributaries was initiated in 2009. Analysis of the 2009–2015 data from four Olifants River sites showed deterioration in the river’s ecological...

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353. 

     The herding behaviour and announcement of insider transfer trading: A study in Taiwan

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Fu Shuen Shie --- Department of Finance, Taiwan Chiao Yi Chang --- Department of Insurance and Finance, Taiwan

     The present paper examines the influence of herding behaviour on the market response to insider transfer trades under different levels of ownership concentration. The results show that the three-day waiting period for executing insider transfer trades that is uniquely required...

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354. 

     Effect of self-monitoring of blood glucose on glycaemic outcome among type 2 diabetic patients

     Item type: Journal Article • Journal: South African Family Practice • Authors: Oluwajimi Olanrewaju Sodipo --- Department of Family Medicine, Ayoade Adedokun --- Department of Family Medicine, Adedeji Adejumo Olusola --- Department of Community Health and Primary Health Care, Nigeria

     Background: Diabetes mellitus is a chronic metabolic disorder which leads to complications especially when not properly managed. The role of self-monitoring of blood glucose (SMBG) in type 2 diabetic patients using oral hypoglycaemic agents has been a source of controversy.

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355. 

     Exploring the personal and social context of female youth sex offenders

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Johan Prinsloo --- Department of Criminology & Security Science, South Africa Gloria da Costa --- Department of Criminology & Security Science, South Africa

     This study explored the personal and social context of young female sex offenders, probing their risk profiles for prospective treatment interventions. A convenience sample of eight young South African female sexual offenders participated in the study (black = 88%, Indian...

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356. 

     Plant anatomy as a tool for evaluating the effect of different levels of nitrogen, plant population density, row spacing and irrigation on kenaf (Hibiscus cannabinus) fibre development

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Kayembe P Kabeya --- Department of Plant and Soil Sciences, South Africa Petrus J Robbertse --- Department of Plant and Soil Sciences, South Africa Diana Marais --- Department of Plant and Soil Sciences, South Africa J Martin Steyn --- Department of Plant and Soil Sciences, South Africa

     Kenaf (Hibiscus cannabinus) provides high-quality fibre that is used in papermaking, building materials and absorbents. The study aims were to conduct a proper anatomical study of fibre development in kenaf stems, and to investigate if the number of fibre wedges,...

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357. 

     Improving the performance of the EPT Index to accommodate multiple stressors in Afrotropical streams

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FO Masese --- Department of Fisheries and Aquatic Sciences, Kenya PO Raburu --- Department of Fisheries and Aquatic Sciences, Kenya

     The EPT index (Ephemeroptera, Plecoptera and Trichoptera) may be skewed by the wide tolerance to multiple stressors of the Baetid, Caenid and Hydropsychid families, which affects the performance of the EPT index as an indicator of multiple stressors in aquatic...

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358. 

     Gender-related morphometric differences in mature and nestling Crowned Eagles, with comments on ringing of eagle nestlings in KwaZulu-Natal, South Africa

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Shane C McPherson --- School of Life Sciences, South Africa Mark Brown --- School of Life Sciences, South Africa Colleen T Downs --- School of Life Sciences, South Africa

     Although most raptor species are sexually dimorphic, many species are non-discrete in some metrics. A limited amount of existing data for southern Africa suggests that Crowned Eagles Stephanoaetus coronatus exhibit non-discrete sexual dimorphism. Consequently, we investigated gender-related morphometric data of...

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359. 

     Temperate forest dynamics and carbon storage: a 26-year case study from Orange Kloof Forest, Cape Peninsula, South Africa

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Anabelle W Cardoso --- Department of Biological Sciences, South Africa Jeremy J Midgley --- Department of Biological Sciences, South Africa M Timm Hoffman --- Department of Biological Sciences, South Africa Coert J Geldenhuys --- Department of Forest and Wood Science, South Africa

     Temperate forests are globally important carbon stores that are, in the face of recent improvements in their conservation, likely to increase their storage capacity in the future. Despite this, these ecosystems are poorly understood, especially over longer time periods. To...

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360. 

     Interventions and pathways for South African women in engineering and the built environment professions

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Christianah O. Ijagbemi --- Department of Industrial Engineering, South Africa Mukondeleli G. Kanakana --- Department of Industrial Engineering, South Africa Harold M. Campbell --- Department of Industrial Engineering, South Africa

     Women engineers are known to be very resourceful, result-oriented, committed and hardworking. The low participation of women in engineering and the built environment professions has been taking its toll on the economic and infrastructural development of South Africa. The practice...

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361. 

     Knowledge transfer model for improving productivity of the cable manufacturing industry: A South African perspective

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Thomas Munyai --- Department of Operations Management, South Africa Stephen Nyakala --- Department of Operations Management, South Africa Charles Mbohwa --- Faculty of Engineering and the Built Environment, South Africa

     Industry is faced with increased challenges relating to transferring knowledge due to the complex nature of the manufacturing process. This paper is part of a comprehensive research study to develop a knowledge transfer model for improving productivity. Although knowledge management...

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362. 

     Comparative genetic structure in two high-dispersal prawn species from the south-west Indian Ocean

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TK Mkare --- Kenya Marine and Fisheries Research Institute, Kenya JC Groeneveld --- Oceanographic Research Institute (ORI), South Africa PR Teske --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South Africa CA Matthee --- Evolutionary Genomics Group, Department of Botany and Zoology, South Africa

     The penaeid prawns Fenneropenaeus indicus and Metapenaeus monoceros support shallow-water prawn fisheries in the south-west Indian Ocean. They are sympatric and have similar life histories, including developmental stages that depend on estuarine and marine habitats and a short dispersal duration...

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363. 

     Habitat characteristics of wintering Wood Warbler Phylloscopus sibilatrix in the Centre Region of Cameroon: conservation implications

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Taku Awa --- Laboratory of Applied Biology and Ecology, Faculty of Science, Cameroon Tsi A Evaristus --- Department of Fundamental Science, Higher Technical Teacher Training College, Cameroon Robin C Whytock --- School of Biological and Environmental Sciences, UK Tsetagho Guilain --- Laboratory of Applied Biology and Ecology, Faculty of Science, Cameroon John Mallord --- Centre for Conservation Science, Royal Society for the Protection of Birds, UK

     Populations of many Afro-Palearctic birds have declined, with those wintering in sub-Saharan Africa, such as Wood Warbler Phylloscopus sibilatrix, particularly affected. In this study we investigated the relationship between habitat characteristics and Wood Warbler presence/absence in the Centre Region of...

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364. 

     An updated assessment of the seabird populations breeding at Príncipe and Tinhosas

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: An Bollen --- Azuria, Belgium Estrela Matilde --- Fundação Príncipe Trust, Nuno Barros --- Birdland – Birdwatching and Nature, Portugal

     The Príncipe Autonomous Region is recognised as a marine biodiversity hotspot, although little is known about the status of its marine fauna. It holds most breeding seabirds of the tropical eastern Atlantic Ocean. Based on anecdotal accounts of increased fishing...

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365. 

     Harvesting and extraction impacts on Eucalyptus grandis × E. urophylla coppicing potential and rotation-end volume in Zululand, South Africa

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Kylle Schwegman --- Nelson Mandela Metropolitan University, South Africa Keith M Little --- Nelson Mandela Metropolitan University, South Africa Andrew McEwan --- Nelson Mandela Metropolitan University, South Africa Simon A Ackerman --- Institute for Commercial Forestry Research, South Africa

     From the early 2000s there has been a general shift in South Africa in harvesting and extraction systems from the use of semi- to fully-mechanised systems. Any increase in mechanisation, as is occurring in Zululand, will need to take into...

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366. 

     Modelling machinery procurement with an emphasis on engineering features

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Basil Olufemi Akinnuli --- Department of Industrial and Production Engineering, Nigeria

     Engineering features are one of the predominant factors in considering machines for procurement; others are economic and supply conditions. Three major attributes considered under these strategic decisions are engineering features (reliability), economic features (annual operating cost) and supply condition (delivery...

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367. 

     An investigation into the normal tax implications of a carried interest in South Africa

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Ellané van Wyk --- Department of Accounting, South Africa Tertius Troost --- Mazars, South Africa

     ‘Carried interest’ is not defined in the South African Income Tax Act 58 of 1962 as amended (the Act), nor has it been subject to scrutiny in South African courts. Uncertainty prevails regarding the classification of a carried interest for...

     View item »
368. 

     Does institutional monitoring matter? Evidence from insider trading by information risk level

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Chune Young Chung --- School of Business Administration, Republic of Korea Sanggyu Kang --- School of Business Administration, Republic of Korea Doojin Ryu --- Department of Economics, Republic of Korea

     We examine the effects of institutional ownership on insider exploitation of asymmetric information. Because institutional investors monitor firm activities in order to improve the corporate information environment, such monitoring could decrease the intensity of insider trading on private information. We...

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369. 

     Structural barriers to South African volunteer home-based caregivers providing quality care: the need for a policy for caregivers not affiliated to primary healthcare clinics

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: David Morton --- Department of Nursing Science, South Africa Thoko Mayekiso --- Vice Chancellor’s Office, South Africa Peter Cunningham --- Department of Sociology and Anthropology, South Africa

     Community home-based care (CHBC) is a critical component of non-formal care in communities in Africa that have a high prevalence of HIV and tuberculosis (TB). Community carers consisting primarily of volunteers are critical role players in African healthcare systems and...

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370. 

     How millennials perceive leisure luxury hotels in a sharing economy?

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Andy Heyes --- Hotel Management School, The Netherlands Ajay Aluri --- College of Business and Economics, USA

     The introduction of both the experience and sharing economies can potentially be seen to be the start of a new type of luxury accommodation, but is that really true? The generation best adapted to such changes, who are also the...

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371. 

     The bivalve Lembulus bicuspidatus may enhance denitrification in shelf sediment at the Angola–Benguela Frontal Zone

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Neumann --- University of Hamburg, Institute for Geology, Germany A Flohr --- Leibniz Center for Tropical Marine Ecology, Germany

     We collected living individuals of the bivalve Lembulus bicuspidatus, which shows an unusual preference for the oxygen-deficient habitat found at the Angola–Benguela Frontal Zone of the southeastern Atlantic. With a series of incubation experiments with 15N-labelled nitrate as a tracer...

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372. 

     Evaluation of UFPA quality assessment criteria for monitoring and evaluation system in the Ghanaian construction industry

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. Tengan --- Faculty of Engineering and the Built Environment, Sustainable Human Settlement and Construction Research Centre, South Africa C.O. Aigbavboa --- Faculty of Engineering and the Built Environment, Sustainable Human Settlement and Construction Research Centre, South Africa A.E. Oke --- Faculty of Engineering and the Built Environment, Sustainable Human Settlement and Construction Research Centre, South Africa

     The need to ensure that construction project monitoring and evaluation systems generate the required project information for effective project delivery and decision-making is imperative for project success. The study evaluates the UFPA quality assessment criteria for monitoring and evaluation system...

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373. 

     Monitoring Victoria’s public forests: implementation of the Victorian Forest Monitoring Program

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Andrew Haywood --- European Forest Institute, Spain Kristen Thrum --- Victorian Department of Environment, Land, Water and Planning, Australia Andrew Mellor --- School of Mathematical and Geospatial Sciences, Australia Christine Stone --- New South Wales Department of Primary Industries, Australia

     A new strategic inventory across all publicly managed forests has been installed in Victoria. For the preceding two decades, Victoria’s forest inventory has been compiled from various data sources from across the state, an approach that doesn’t allow information about...

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374. 

     Madagascar Fish Eagle productivity in the Tsimembo-Manambolomaty Protected Area and surrounding habitat of western Madagascar

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Gilbert Razafimanjato --- The Peregrine Fund Madagascar Project, Madagascar Lily-Arison René de Roland --- The Peregrine Fund Madagascar Project, Madagascar Marius Rakotondratsima --- The Peregrine Fund Madagascar Project, Madagascar Stephanie Razakaratrimo --- The Peregrine Fund Madagascar Project, Madagascar Yverlin ZM Pruvot --- The Peregrine Fund Madagascar Project, Madagascar Tsiresy M Razafimanantsoa --- Mention: Zoologie et Biodiversité Animale, Facultés des Sciences, Madagascar Aristide Andrianarimisa --- The Peregrine Fund Madagascar Project, Madagascar Russell Thorstrom --- The Peregrine Fund, USA

     We monitored the productivity of the critically endangered Madagascar Fish Eagle Haliaeetus vociferoides inside and outside of the Tsimembo-Manambolomaty Protected Area (T-M PA), western Madagascar from 2010 to 2015. We recorded 14 breeding pairs inside and 13 outside T-M PA...

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375. 

     Longevity summary from 69 years of Estrildidae ringing data in southern Africa

     Item type: Journal Article • Journal: African Zoology • Authors: Sanjo Rose --- Animal Demography Unit, Department of Biological Sciences, South Africa H Dieter Oschadleus --- Animal Demography Unit, Department of Biological Sciences, South Africa

     This study focuses on the longevity data accumulated for the family Estrildidae, specifically exploring longevity records for each species using ringing data. Longevity is the minimum age reached by an individual as determined by the time elapsed between initial ringing...

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376. 

     Morphometric characterisation of Scutellonema bradys populations from the Guinea Savanna and Transitional Rain Forest ecological zones of Ghana

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Seloame Tatu Nyaku --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Yahaya Saaka Jamani --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Eric Cornelius --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Hanif Lutuf --- Department of Crop Science, College of Basic and Applied Sciences, Ghana

     Yam (Dioscorea spp.) forms a large portion of Ghanaian diets and is cultivated in most regions. However, yam is highly susceptible to parasitism by the yam nematode, Scutellonema bradys. Ten major yam communities from 10 districts (Yendi, Karaga, East Gonja,...

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377. 

     Blood pressure measurement in obese patients: non-invasive proximal forearm versus direct intra-arterial measurements

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: A Verkhovsky --- Department of Anesthesiology and Critical Care, South Africa M Smit --- Department of Anesthesiology and Critical Care, South Africa A Levin --- Department of Anesthesiology and Critical Care, South Africa JF Coetzee --- Department of Anesthesiology and Critical Care, South Africa

     Background: In obesity, accurate perioperative blood pressure measurement using upper arm, non-invasive blood pressure (NIBP) is technically challenging. Proximal forearm NIBP may be an acceptable substitute. Mean arterial blood pressures (MAP) estimated by proximal forearm NIBP were compared with direct...

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378. 

     Association of micronutrients and child growth in children aged 7-15 years from Qwa-Qwa, South Africa

     Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Abdulkadir Egal --- Centre of Sustainable Livelihoods, South Africa Wilna Oldewage-Theron --- Centre of Sustainable Livelihoods, South Africa

     Objectives: This study investigated the possible associations between micronutrient deficiencies and child growth in the rural community of Qwa-Qwa in the Free State province of South Africa (SA).

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379. 

     Impacts of alien ‘ecosystem engineers’ overwhelm interannual and seasonal shifts in rocky-shore community composition on Marcus Island, South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Sadchatheeswaran --- Department of Biological Sciences and Marine Research Institute, South Africa GM Branch --- Department of Biological Sciences and Marine Research Institute, South Africa CL Moloney --- Department of Biological Sciences and Marine Research Institute, South Africa TB Robinson --- Department of Botany and Zoology, South Africa

     The South African coastline has been invaded by numerous alien species. Rare pre-invasion (1980) and post-invasion datasets (2001 and 2012) exist for Marcus Island, a small land-tied island in Saldanha Bay, South Africa. These snapshot datasets of the island’s intertidal...

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380. 

     Use of the American Society of Anesthesiologists Physical Status Classification in non-trauma surgical versus trauma patients: a survey of inter-observer consistency

     Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Shree Singaram --- Anaesthesiology and Critical Care, South Africa Sailuja Naidu --- Anaesthesiology and Critical Care, South Africa

     Background: The American Society of Anesthesiologists-Physical Status (ASA-PS) Classification is a grading system for classifying surgical patients based on their co-morbid background. Despite numerous benefits, its highly subjective nature has led to marked inconsistency when used. The purpose of this...

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381. 

     A theoretical framework for airport-centric developments: The cases of OR Tambo and Cape Town international airports in South Africa

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Masilonyane Mokhele --- Department of Town and Regional Planning, Faculty of Informatics and Design, South Africa Hermanus S. Geyer --- Department of Geography and Environmental Studies, Centre for Regional and Urban Innovation and Statistical Exploration (CRUISE), South Africa

     With a wealth of valuable literature, airports are a topical subject matter on the nexus between transportation technology advancements and land use. While acknowledging the insights of literature, it is argued that improvements are required on the theoretical framework for...

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382. 

     Genetic diversity and population connectivity of the sea urchin Tripneustes gratilla along the South African coast

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Brink --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa R Dale Kuys --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa C Rhode --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa BM Macey --- Branch: Fisheries Management, Department of Agriculture, South Africa KW Christison --- Branch: Fisheries Management, Department of Agriculture, South Africa R Roodt-Wilding --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa

     The collector sea urchin Tripneustes gratilla has been identified as a species with potential for aquaculture production in South Africa. The species’ roe is considered a culinary delicacy in Asia and Europe. However, T. gratilla remains genetically uncharacterised in South...

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383. 

     A multimetric-index approach using fisheries data to assess fish assemblage structure in relation to salinity gradient in a tropical West African estuary

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Kantoussan --- Université Gaston Berger de Saint-Louis, Senegal JM Ecoutin --- Institut de Recherche pour le Développement (IRD), France R Laë --- Institut de Recherche pour le Développement (IRD), France OT Thiaw --- Institut Universitaire de Pêche et d’Aquaculture (IUPA), Université Cheikh Anta Diop de Dakar, Senegal L Tito de Morais --- Institut de Recherche pour le Développement (IRD), France

     This study examines the effects of increasing salinity on fish assemblage structure in the Casamance Estuary, Senegal, using a series of indices. The study data were derived from commercial fishery surveys conducted between April and July 2005. Analysis of within-trophic-group...

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384. 

     Promoting mental health of students living with HIV using appreciative inquiry

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Teolene Diedricks --- Department of Educational Psychology, South Africa Christoffel Myburgh --- Department of Educational Psychology, South Africa Marie Poggenpoel --- Department of Educational Psychology, South Africa

     Living with HIV poses many challenges. This is especially true for students living with HIV (SLHIV) within a university setting. The challenges faced by SLHIV makes it difficult for them to see new possibilities in living with the virus. The...

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385. 

     Evaluation of satellite retrievals of water quality parameters for Lake Victoria in East Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Gidudu --- Department of Geomatics and Land Management, Uganda R Mugo --- Regional Centre for Mapping Resource for Development, Nairobi Kenya L Letaru --- Department of Geomatics and Land Management, Uganda J Wanjohi --- Regional Centre for Mapping Resource for Development, Nairobi Kenya R Nakibule --- Department of Geomatics and Land Management, Uganda E Adams --- Earth System Science Centre–University of Alabama in Huntsville, USA A Flores --- Earth System Science Centre–University of Alabama in Huntsville, USA B Page --- Earth System Science Centre–University of Alabama in Huntsville, USA W Okello --- National Fisheries Resources Research Institute, Uganda

     Lake Victoria in East Africa is a major ecosystem, whose size and importance has warranted the exploration of MODIS imagery to provide continuous and accurate water quality information. To this effect, two sea expeditions (in November 2014 and February 2015)...

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386. 

     Preliminary evaluation of non-native rainbow trout (Oncorhynchus mykiss) impact on the Cederberg ghost frog (Heleophryne depressa) in South Africa’s Cape Fold Ecoregion

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Avidon --- Department of Conservation Ecology and Entomology, South Africa JM Shelton --- Department of Conservation Ecology and Entomology, South Africa SM Marr --- DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South Africa TA Bellingan --- Centre for Invasion Biology, South Africa KJ Esler --- Department of Conservation Ecology and Entomology, South Africa OLF Weyl --- DST/NRF Research Chair in Inland Fisheries and Freshwater Ecology, South Africa

     We evaluated the impact of non-native rainbow trout Oncorhynchus mykiss on a population of endemic Cedarberg ghost frog Heleophryne depressa in the upper Krom River (Olifants-Doring River Catchment, Cape Fold Ecoregion). We compared H. depressa abundance (using kick-sampling and underwater...

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387. 

     Challenges experienced by healthcare workers in managing patients with hearing impairment at a primary health care setting: a descriptive case study

     Item type: Journal Article • Journal: South African Family Practice • Authors: S Orrie --- Division of Family Medicine, School of Public Health and Family Medicine, South Africa T Motsohi --- Division of Family Medicine, School of Public Health and Family Medicine, South Africa

     There has been little research on the experiences of healthcare workers (HCWs) with deaf/hearing impaired (HI) clients. Anecdotal evidence suggests that HCWs experience challenges, but little is reported on how they manage these challenges. Interactions with and care of deaf/Deaf...

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388. 

     Should all patients on insulin be using continuous glucose monitoring?

     Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Larry A Distiller --- Centre for Diabetes and Endocrinology, South Africa

     Continuous glucose monitoring (CGM) is being used increasingly both in patients on insulin pumps (CSII) and more recently in those on multiple injection regimens (MIR). This review lists the CGM devices available in South Africa and explores the literature supporting...

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389. 

     Offender interviewing in custodial settings: Understanding validity, value and veracity issues

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Friedo JW Herbig --- Department of Criminology and Security Science, South Africa Cecili Doorewaard --- Department of Criminology and Security Science, South Africa

     The purpose of this scoping literature review was to identify trends regarding validity, value and veracity issues when conducting (qualitative) interviews with offenders in custodial settings. We selected for review works from electronic databases in SAGE, Springer, and Taylor and...

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390. 

     Feasibility economic analysis for electricity generation in internal combustion engine sets using landfill gas in Lagos State

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: A. O. Adepoju --- Project Management Department, Nigeria Y. O. Akinwale --- Department of Economics, Saudi Arabia I. O. Ogundari --- African Institute for Science Policy and Innovation, Obafemi Awolowo University, Nigeria

     The main objective of this paper is to analyze the economic feasibility landfill gas for electricity generation in Lagos State. In this paper, methane emissions are estimated by applying the First Order Decay model to landfills in Lagos over the...

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391. 

     Communities’ perceptions of benefit-sharing mechanisms for forest-based land reform models in South Africa

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ratsodo Phillip Tshidzumba --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, South Africa Paxie W Chirwa --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, South Africa Folaranmi D Babalola --- Forest Science Postgraduate Programme, Department of Plant and Soil Sciences, Faculty of Natural and Agricultural Sciences, South Africa

     One of the dominant challenges facing the South African forestry sector is the issue of land restitution. The aim of this study was, therefore, to assess the perception of beneficiaries of benefit-sharing modalities for forest-based land reform initiatives in their...

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392. 

     Effect of moringa extract on the leaf anatomy and yield potential of tomato infected by Alternaria solani

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Culver Mvumi --- Department of Plant and Soil Science, South Africa Diana Marais --- Department of Plant and Soil Science, South Africa Elizabeth Ngadze --- Department of Crop Science, Zimbabwe Elsa S du Toit --- Department of Plant and Soil Science, South Africa Albert Tsindi --- Faculty of Agriculture, Zimbabwe

     Tomato is often exposed to hormones and diseases, among other factors, to which responses in leaf anatomy and yield are observed. This study evaluated responses in the leaf anatomy of Alternaria solani infected (IN) and non-infected (NIN) tomato (Solanum lycopersicum)...

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393. 

     Zambian Invertebrate Scoring System (ZISS): A macroinvertebrate-based biotic index for rapid bioassessment of southern tropical African river systems

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HF Dallas --- Freshwater Research Centre, Scarborough, South Africa S Lowe --- University of Glasgow, Scotland MP Kennedy --- Northern Rivers Institute, School of Geosciences, England K Saili --- Department of Geography and Environmental Studies, Zambia KJ Murphy --- University of Glasgow, Scotland

     An extensive survey of tropical rivers, conducted during 2009–2012 throughout Zambia, collected 151 samples of benthic macroinvertebrates, located on 95 rivers in six of the nine freshwater ecoregions. Associated data for physico-chemistry, human activities and ecosystem stressors were collected. Data...

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394. 

     Pre-harvest Curing: Effects on Skin Adhesion, Chemical Composition and Shelf-life of Sweetpotato Roots under Tropical Conditions

     Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Aditya Parmar --- Department of Agricultural and Biosystems Engineering, Germany Sascha M. Kirchner --- Department of Agricultural and Biosystems Engineering, Germany Barbara Sturm --- Department of Agricultural and Biosystems Engineering, Germany Oliver Hensel --- Department of Agricultural and Biosystems Engineering, Germany

     Excoriation (skinning injury) is a serious post-harvest problem for sweetpotato roots. In industrialized countries, sweetpotatoes are exposed to post-harvest curing to facilitate skin toughening and wound healing. However, in developing regions, such a practice is barely undertaken. Pre-harvest curing (PHC),...

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395. 

     Montane forest birds in winter: do they regularly move to lower altitudes? Observations from the Eastern Cape, South Africa

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Adrian JFK Craig --- Department of Zoology and Entomology, South Africa Patrick E Hulley --- Department of Zoology and Entomology, South Africa

     Seasonal altitudinal migration to lower altitudes including the coast has been ascribed to a number of forest birds, of which 14 species occur at Fort Fordyce Reserve in the Eastern Cape, South Africa. Based on our observations and ringing at...

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396. 

     Climate change and adaptation-induced engineering design and innovations in water development projects in Africa

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Berhanu F. Alemaw --- Department of Geology, Botswana Nako M. Sebusang --- Department of Civil Engineering, Botswana

     In this paper, a framework for best practice for incorporating climate change and adaption in Africa is presented from mainly the water resources design and management perspectives to chart systematically ways of incorporating climate change in engineering design of water...

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397. 

     Current state and trajectory of design engineering in Kenya

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Hailemichael Teshome Demissie --- School of Law, Ethiopia

     In the last few decades, the methods and models of engineering design practices have changed drastically due to the introduction of better technology and sophisticated design tools. Engineers are now moving away from manual design and drafting using A4 paper...

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398. 

     Student’s perception of engineering design for competitiveness in Africa: The case of Tanzania, East Africa

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lawrence Joseph Kerefu --- Department of Mechanical Engineering, Tanzania Juliana Zawadi Machuve --- Department of Mechanical and Industrial Engineering, Tanzania

     Engineering is vital for addressing basic human needs, improving the quality of life and creating opportunities for sustainable prosperity at local, regional, national and global levels. However, Africa faces a shortage of engineers arising from the declining interest and enrolment...

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399. 

     The Effect of Provenance, Plant Spacing and Cutting Interval on Leaf Biomass Yield of Moringa Oleifera Lam.

     Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: C. T. Gadzirayi --- Bindura University of Science Education, Zimbabwe F. Kubiku --- Bindura University of Science Education, Zimbabwe J. Mupangwa --- University of Fort Hare, South Africa B. Masamha --- Bindura University of Science Education, Zimbabwe L. Mujuru --- Bindura University of Science Education, Zimbabwe

     Two provenances of Moringa oleifera Lam., Malawi and Mutoko, were evaluated to determine the effect of plant spacing and cutting interval on the leaf biomass yield for fodder production. A split-split plot experimental design was set up with provenance as...

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400. 

     Evaluation of the early warning indicators of HIV drug resistance surveillance system in Manicaland province, Zimbabwe

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Anesu Marume --- Department of Community Medicine, College of Health Sciences, Zimbabwe Admire Zikiti --- Department of Community Medicine, College of Health Sciences, Zimbabwe Byron Chapoterera --- Department of Community Medicine, College of Health Sciences, Zimbabwe Julita Maradzika --- Department of Community Medicine, College of Health Sciences, Zimbabwe

     More than 1.1 million people currently receive lifelong antiretroviral treatment in Zimbabwe following the adoption of the test and treat strategy in 2017. The huge numbers of people on antiretroviral therapy (ART), combined with HIV’s error-prone replication, increases the probability...

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401. 

     Acceptability of a moringa-added complementary soft porridge to caregivers in Hammanskraal, Gauteng province and Lebowakgomo, Limpopo province, South Africa

     Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Sithandiwe Ntila --- School of Agricultural, Earth and Environmental Sciences, South Africa Ashwell R. Ndhlala --- Agricultural Research Council, South Africa Unathi Kolanisi --- Department of Consumer Science, South Africa Hafiz Abdelgadir --- Agricultural Research Council, South Africa Muthulisi Siwela --- School of Agricultural, Earth and Environmental Sciences, South Africa

     Objectives: This study determined caregivers’ (mothers’) acceptability and perceptions of a soft, white maize porridge (traditional complementary food (TCF)) that was modified by substituting maize meal with Moringa oleifera Lam. leaf powder at different levels, 1%, 2% and 3% weight...

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402. 

     Structure of the Experience of Work and Life Circumstances Questionnaire among South African employees in the financial services and health sectors

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Petrus Nel --- Department of Industrial Psychology, South Africa Ebben S. van Zyl --- Department of Industrial Psychology, South Africa Agnes Akwa-Nde --- Department of Industrial Psychology, South Africa Motselisi Lucy Mokuoane --- Ministry of Health and Social Welfare, Lesotho

     This study sought to validate the Experience of Work and Life Circumstances Questionnaire (WLQ) in South Africa. Respondents were 393 employees within the financial services (n = 238) and health sector (n = 155). Results from the exploratory factor analysis...

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403. 

     The nature and preliminary outcomes of a Four-dimensional Accounting Student Support (FASS) programme

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Corlia Janse van Vuuren --- Dean’s office (Teaching and Learning), Faculty of Economic and Management Sciences, South Africa Lizelle Bruwer --- School of Accountancy, Faculty of Economic and Management Sciences, South Africa Annari Muller --- Dean’s office (Teaching and Learning), Faculty of Economic and Management Sciences, South Africa

     A traditional student-support approach to Accounting, which involved tutoring and case-study-based independent learning, was redesigned to create a Four-dimensional Accounting Student Support (FASS) programme. The redesign was necessitated by continued poor module success rates, low graduation rates and limited engagement...

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404. 

     Winter site use by Afro-Palearctic migrants in Ghana: site persistence and densities of Willow Warbler, Pied Flycatcher, Melodious Warbler and Common Redstart

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kasper Thorup --- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, Denmark Iben Hove Sørensen --- DOF BirdLife Denmark, Denmark Mikkel Willemoes --- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, Denmark Mathilde Lerche-Jørgensen --- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, Denmark Jon Fjeldså --- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, Denmark Anders P Tøttrup --- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, Denmark Erik Mandrup Jacobsen --- DOF BirdLife Denmark, Denmark Andrew H Reeve --- Center for Macroecology, Evolution and Climate, Natural History Museum of Denmark, Denmark Robert Oteng-Appau --- Ghana Wildlife Society, Ghana Augustus Asamoah --- Ghana Wildlife Society, Ghana Thomas Lehmberg --- DOF BirdLife Denmark, Denmark

     Little is known about the variation within and among species of long-distance migrants in behavioural strategies and habitat choice on their non-breeding grounds. We report results from regular ringing operations carried out during the winter seasons 2009–2013 and transect counts...

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405. 

     Integrating services for impact and sustainability: a proof-of-concept project in KwaZulu-Natal, South Africa

     Item type: Journal Article • Journal: South African Family Practice • Authors: J Lyn Haskins --- Centre for Rural Health, South Africa Sifiso A Phakathi --- Centre for Rural Health, South Africa Merridy Grant --- Centre for Rural Health, South Africa Christiane M Horwood --- Centre for Rural Health, South Africa

     Background: Integration of services in primary health care settings can provide mother/baby pairs with all required services at one visit. This study aimed to evaluate a proof of concept, quality improvement (QI) intervention to strengthen well-child service provision and integration...

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406. 

     Spatio-temporal variation of environmental variables and aquatic macroinvertebrate assemblages in Lake Nokoué, a RAMSAR site of Benin

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OH Odountan --- Laboratory of Ecology and Aquatic Ecosystem Management, Department of Zoology, Republic of Benin L Janssens de Bisthoven --- Capacities for Biodiversity and Sustainable Development (CEBioS), Belgium CZ Koudenoukpo --- Laboratory of Hydrobiology and Aquaculture, Benin Y Abou --- Laboratory of Ecology and Aquatic Ecosystem Management, Department of Zoology, Republic of Benin

     Environmental characteristics and macroinvertebrate assemblages of Lake Nokoué (Benin) were investigated from September 2014 to July 2016. Seasonal and hydroclimatic changes, as well as anthropogenic activities were the overriding factors affecting environmental variables investigated. Analysis of macroinvertebrate community structure with...

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407. 

     Testing of the applicability of European diatom indices in the tropical rift valley lake, Lake Hawassa, in Ethiopia

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Wondmagegn --- Department of Animal Science, Ethiopia S Mengistou --- Department of Zoological Science, Ethiopia PA Barker --- Environment Centre, United Kingdom

     Quantitative ecological monitoring of African lakes is needed to understand growing human pressures on ecosystems. Diatom-based indices are routinely used for this purpose elsewhere in the world, but have not yet been produced for the flora of African freshwater lakes...

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408. 

     “Physiologically, I am hearing, but psychologically, I am Deaf.” Identity: Lived experiences of hearing children born in families with Deafness in South Africa

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nomfundo Moroe --- Speech Pathology and Audiology Department, South Africa

     The aim of this study was to explore hearing children of Deaf adult’s (CODAs) experiences of belonging and affiliation within the Deaf and hearing community. Respondents consisted of 10 CODAs between the ages 21 and 40 years of age, recruited...

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409. 

     Construct validity of a financial literacy instrument

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nico Keyser --- Department of Economics and Finance, South Africa Cecile Duvenhage --- Department of Economics and Finance, South Africa

     The aim of the present study was to validate the factorial structure and psychometric properties of a financial literacy instrument in a South African student sample. A total of 265 students completed the measure (58.5% = female; 58.62% = black,...

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410. 

     Transformational and transactional leadership effects on communication styles

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: El-Roy Crews --- School of Industrial Psychology and Human Resource Management, South Africa Marissa Brouwers --- School of Industrial Psychology and Human Resource Management, South Africa Jan C. Visagie --- School of Industrial Psychology and Human Resource Management, South Africa

     This study aimed to investigate the effects of perceived transformational and transactional leadership styles on communication styles among employees in manufacturing organisations within South Africa. Respondents were a purposive sample of 564 employees of South African manufacturing organisations (females =...

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411. 

     Linking empowering leadership and career calling: The mediating role of psychological need fulfilment

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Leigang Zhang --- School of Teacher Education, China Tingting Jin --- Intensive Care Unit, China

     This study investigated whether and how empowering leadership influences employees’ career calling by exploring the mediating role of psychological need fulfilment. Participants comprised a convenience sample of 584 clinical nurses from ten public hospitals in China (female = 85.2%; age...

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412. 

     A reflective note: AJOM Inaugural Junior Faculty Fellowship

     Item type: Journal Article • Journal: Africa Journal of Management • Authors: Juliana M. Namada --- Chandaria School of Business, Kenya Carol Brunt --- Department of Management, USA Joshua Knapp --- Department of Management, USA

     In recognizing the persistent publishing challenge among African-based scholars, the African Academy of Management (AFAM) and the Africa Journal of Management (AJOM) joined forces to explore various alternatives to address the challenge. The creation of the Junior Faculty Fellowship is...

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413. 

     Bringing out the creativity in you: How a competitive climate and mentoring kindle creative work involvement of university academic staff

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ebele E. Nnadozie --- Department of Psychology, Nigeria Lawrence E. Ugwu --- Department of Psychology, Nigeria Ibeawuchi K. Enwereuzor --- Department of Psychology, Nigeria Emmanuella Ugochi Anozie --- Department of Sociology/Psychology and Criminology and Security Studies, Nigeria Florence Chiji Albi-Oparaocha --- College of Medicine, Nigeria

     We investigated mentoring as a moderator between competitive climate and employee creative work involvement. Participants were 270 academic staff of a Nigerian federal university (male = 155 [57.41%] and female = 115 [42.59%]). The participants were employed as Graduate Assistant = 15 (5.56%), Assistant Lecturer = 78 (28.89%),...

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414. 

     What motivates people to become Airbnb hosts – do we know enough? — an exploration of the literature

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Simon Lind Fischer --- Dania Academy, Denmark Henrik S Pahus --- Dania Academy, Denmark Anne Bager --- Dania Academy, Denmark

     Airbnb hosts open their doors to provide hospitality for strangers in 7 million homes in more than 100 000 cities around the world. On top of that, Airbnb hosts offer 40 000 guided local experiences across more than 1 000...

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415. 

     The potential use of chironomids (Insecta: Diptera) as bioindicators in streams and rivers around Sebeta, Ethiopia

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Mezgebu --- Department of Fisheries and Aquatic Sciences, Ethiopia A Lakew --- National Fisheries and Aquatic Life Research Centre, Ethiopia B Lemma --- Department of Zoological Sciences, Ethiopia G Beneberu --- Department of Biology, Ethiopia

     The impact of human activities on streams and rivers of Ethiopia was assessed using the Dipteran family Chironomidae. Different stressors originating from industries and agricultural activities were assessed to see their effect on Chironomidae taxa. Chironomidae larvae were collected using...

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416. 

     Vulnerability of birds to contaminated water sources in the Karoo region of South Africa

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Alan TK Lee --- FitzPatrick Institute of African Ornithology, South Africa Carolynne Geary --- Purposefully Lost Conservation Centre, South Africa Dale R Wright --- BirdLife South Africa, South Africa W Richard J Dean --- FitzPatrick Institute of African Ornithology, South Africa

     The Karoo is a unique region in South Africa in terms of its ecological processes and endemic species. Large areas are needed to maintain viable populations of nomadic birds that follow erratic rainfall events and subsequent food and nesting resources,...

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417. 

     Roseate Terns Sterna dougallii on the southeast coast of South Africa: information on moult and migratory status

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anthony J Tree --- Port Alfred, South Africa Maëlle Connan --- Department of Zoology, Marine Apex Predator Research Unit, Institute for Coastal and Marine Research, South Africa Philip A Whittington --- Department of Zoology, South Africa

     Determining the migratory status of seabird populations is crucial for addressing conservation concerns. The Roseate Tern Sterna dougallii is considered endangered in South Africa in view of its small breeding population and the threats to eggs and chicks. Earlier works...

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418. 

     Knysna Estuary health: ecological status, threats and options for the future

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Claassens --- Department of Zoology and Entomology, South Africa RSK Barnes --- Department of Zoology and Entomology, South Africa J Wasserman --- Department of Botany, DST/NRF Research Chair in Shallow Water Ecosystems, South Africa SJ Lamberth --- Fisheries Research and Development, Department of Environment, Forestry and Fisheries, South Africa NAF Miranda --- Department of Botany and Zoology, South Africa L van Niekerk --- Council for Scientific and Industrial Research, South Africa JB Adams --- Department of Botany, DST/NRF Research Chair in Shallow Water Ecosystems, South Africa

     The Knysna Estuary is South Africa's most important estuary in terms of conservation, containing an estimated 42% of all estuarine biodiversity. Despite formal protection the estuary is open access and vulnerable to resource exploitation, development, pollution and freshwater inflow alterations...

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419. 

     Using action cameras to estimate the abundance and habitat use of threatened fish in clear headwater streams

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Hannweg --- , South Africa SM Marr --- , South Africa LE Bloy --- , South Africa OLF Weyl --- , South Africa

     Snorkel and electrofishing surveys are the traditional baseline methods for fish surveys in clear headwater streams. However, action cameras provide a non-harmful alternative to monitor freshwater fish populations to develop informed conservation management initiatives. In this paper, estimates from photographs...

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420. 

     Summarising biometrics from the SAFRING database for southern African birds

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sanjo Rose --- , South Africa Robert L Thomson --- , South Africa Hans-Dieter Oschadleus --- , South Africa Alan TK Lee --- , South Africa

     Biometrics form a key characteristic of a species. Here, we provide a summary of biometrics held by the South African Bird Ringing Scheme (SAFRING), which was initiated in 1948, including measures of mass and lengths of the tarsus, head, culmen,...

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421. 

     A genetic study of pod shattering resistance in F2 soybean (Glycine max) germplasm

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Khuliso M Nevhudzholi --- , South Africa Eastonce T Gwata --- , South Africa Godwin RA Mchau --- , South Africa

     Soybean is an important food legume. Promiscuous (tropical) soybean types which are compatible with indigenous soil rhizobia are desirable in crop production systems that are limited by inorganic nitrogenous fertilizers. However, the tropical soybean types are generally susceptible to pod...

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422. 

     Wave setup at Tristan da Cunha

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PL Woodworth --- , United Kingdom

     Wave setup was investigated using data from tide gauges in a small harbour at the island of Tristan da Cunha in the South Atlantic Ocean. Frequent examples of wave setup were found during the period 1986–1992, but were much less...

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423. 

     Duration of survey changes interpretation of habitat preferences: an example of an endemic tropical songbird, the Bangwa Forest Warbler

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michał Budka --- , Poland Magdalena Czyż --- , Poland Anna Skierczyńska --- , Poland Michał Skierczyński --- , Poland Tomasz S Osiejuk --- , Poland

     Understanding the distribution, habitat preferences and population trends is crucial to effectively manage and protect birds. Currently, in this area, there are disproportionally more studies on temperate than on tropical species. Consequently managing, protecting and predicting population trends in tropical...

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424. 

     On a collision course? The large diversity of birds killed by wind turbines in South Africa

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: V Perold --- , South Africa S Ralston-Paton --- , South Africa P Ryan --- , South Africa

     Wind energy is a clean, renewable alternative to fossil fuel-derived energy sources, but many birds are at risk from collisions with wind turbines. We summarise the diversity of birds killed by turbine collisions at 20 wind energy facilities (WEFs) across...

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425. 

     Challenges in nest monitoring of White-winged Flufftails Sarothrura ayersi in Ethiopia

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Melissa A Howes-Whitecross --- , South Africa Caroline Howes --- , South Africa Robin B Colyn --- , South Africa Hanneline A Smit-Robinson --- , South Africa

     The Critically Endangered White-winged Flufftail Sarothrura ayresi is only known to breed in the high-altitude wetlands of Ethiopia and South Africa. Several studies have documented the physical properties of nests in the well-known Berga wetland, Ethiopia; however, behavioural accounts of...

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426. 

     A systems-based R&D management model for the road and transport engineering sector applied to a community access roads and transport research programme

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Frederik Christoffel Rust --- , South Africa Leslie Roy Sampson --- , South Africa

     A conceptual non-linear, systems-based R&D management model for the road and transport sector was developed to address the associated complexities of transport and road research. It takes account of all the elements of the innovation value chain as well as...

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427. 

     Pilot study involving the use of point-of-care glycated haemoglobin (HbA1c) testing for screening and monitoring of diabetes mellitus in the public healthcare sector in KwaZulu-Natal

     Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Somasundram Pillay --- , South Africa

     Background: The diabetes pandemic continues to cause both patient and economic burden. Globally, strategies to improve glycaemic control in patients with diabetes are highly sought after. One such strategy involves the use of point-of-care glycated haemoglobin (POCT HbA1c) testing, which...

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428. 

     Discovering the research focus of higher academic institutions

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olufunke Oladipupo --- , Nigeria Ibukun Afolabi --- , Nigeria Stephen Adubi --- , Nigeria Olaperi Sowunmi --- , Nigeria

     The research focus of an institution indicates the academic strength of the institution. This academic strength goes a long way to determine the quality of academic product expected from such an institution. To this effect, this study aims at analyzing...

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429. 

     The effect of accessibility and value addition on the costs of controlling invasive alien plants in South Africa: A three-species system dynamics model in the fynbos and grassland biomes

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Douglas J Crookes --- , South Africa James N Blignaut --- , South Africa David C Le Maitre --- , South Africa

     We developed a two-biome (grasslands and fynbos) system dynamics model simulating invasions of three invasive alien plant species – black wattle (Acacia mearnsii) and two pine species (Pinus patula and Pinus pinaster) – and some of the consequences. The model...

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430. 

     Inter-annual growth response of three Miombo tree species to climatic effects

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Francis Munalula --- , South Africa Thomas Seifert --- , South Africa Martina Meincken --- , South Africa

     Miombo woodlands cover a large part of Southern Africa and contribute an important wood source for the local wood industry. The already observed and further predicted changes in climatic patterns can be expected to affect the wood properties of Miombo...

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431. 

     Morpho-agronomical characterisation of local and international sweetpotato germplasm from the South African collection

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sonia IM Naidoo --- , South Africa Sunette M Laurie --- , South Africa Hussein Shimelis --- , South Africa Mark D Laing --- , South Africa

     Considerable genetic diversity is present amongst the sweet potato (Ipomoea batatas (L.) Lam.) accessions that can be selected for breeding. The Agricultural Research Council of South Africa maintains 360 sweetpotato accessions that were bred locally, and introductions from various regions...

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432. 

     Monitoring metals in South African harbours between 2008 and 2009, using resident mussels as indicator organisms

     Item type: Journal Article • Journal: African Zoology • Authors: V Wepener --- , South Africa N Degger --- , France

     More than 65% of the South African coastline is threatened as a result of pollution, a large proportion of which is land derived. To date the majority of published data on metal monitoring has been on limited regions or once-off...

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433. 

     Estimating effects of information and communication technology (ICT) on the productivity of manufacturing industries in South Africa

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mapula Hildah Lefophane --- , South Africa Mmatlou Kalaba --- , South Africa

     This paper serves to examine whether the growth in labour productivity (LP) in South Africa’s manufacturing sector, following policy reforms after 1994, can be attributed to ICT use. To achieve this, we examine the link between ICT intensity and LP...

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434. 

     Sibling competition in the broods of Little Egrets Egretta garzetta in a southern Tunisian breeding colony

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Amel Neb --- , Tunisia Slaheddine Selmi --- , Tunisia

     Asynchronous hatching is a common hatching pattern in the Little Egret Egretta garzetta, however, its role in maintaining dominance relationships and feeding hierarchy among siblings remains poorly studied. In this study, we investigated this issue using data on feeding and...

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435. 

     The normal tax consequences of home swaps for residents owning property in the Republic of South Africa

     Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Magdel Zietsman --- , South Africa Andrea Herron --- , South Africa

     “Home swapping” has become more accessible due to a global phenomenon, known as the sharing economy. Technological advancement has removed the barriers to international trade and members of home swapping programmes exchange rights to provide each other with accommodation in...

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436. 

     Status of a decennial marine invasion by the bisexual mussel Semimytilus algosus (Gould, 1850) in South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KCK Ma --- , South Africa CD McQuaid --- , South Africa A Pulfrich --- , South Africa TB Robinson --- , South Africa

     The invasion history and current distribution of the alien marine mussel, the bisexual mussel Semimytilus algosus, on rocky shores of South Africa is described in this study. The eastern edge of its distribution has been monitored since 2014, and the...

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437. 

     Beef cuts amongst the Bangwaketse: the case of motlhakanelwa

     Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Thapelo Otlogetswe --- , Botswana

     The Setswana wedding is characterised by ritual intensity. Whilst some rituals are changing rapidly, one particular event that has remained relevant is the handling and sharing of the motlhakanelwa beast. Kgomo ya motlhakanelwa, the beast that is shared, is one...

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438. 

     The role of strategic supplier relationships in enhancing supply chain innovation: A qualitative study in the South African automotive manufacturing industry

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Malente Modungwa --- , South Africa Melissa Rinke --- , South Africa Assilah Agigi --- , South Africa Kelvinne Mocke --- , South Africa

     Supply chain innovation is a mechanism that firms use to ensure efficient supply chain management through collaboration with external supply chain partners. The interaction between buyers and suppliers is especially crucial in fostering innovation resulting in modifications, improvements and development...

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439. 

     Evaluation of temperature effects on grade 20 concrete using response surface methodology

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Richie I. Umasabor --- , Nigeria

     This paper examined the evaluation of temperature effects on grade 20 concrete using response surface methodology. An experimental research design was adopted, which produced fifty-one (51) concrete specimens. The specimens were cured and tested at 7, 18, and 28 days,...

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440. 

     Demography of remarriage and fertility desire among women receiving antiretroviral therapy in South West Nigeria

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Joshua O Akinyemi --- , Nigeria Rotimi F Afolabi --- , Nigeria Olutosin A Awolude --- , Nigeria E Afolabi Bamgboye --- , Nigeria

     Background: In view of sociocultural norms surrounding marriage and childbearing in South West Nigeria, fertility desire may be stronger among remarried women living with HIV. This article describes the characteristics of remarriage and its relationship to fertility desire.

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441. 

     The dapivirine vaginal ring from the perspective of married men in Uganda

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Anita Kabarambi --- , Uganda Sylvia Kusemererwa --- , Uganda Emily Krogstad --- , South Africa Philippe Mayaud --- , Uganda Janet Seeley --- , Uganda Joseph Mugisha --- , Uganda Mitzy Gafos --- , United Kingdom

     Background: Men play a key role in influencing uptake of women’s health products, such as female condoms and vaginal microbicides used for family planning and HIV prevention.

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442. 

     Stock price prediction using multiple valuation methods based on artificial neural networks for KOSDAQ IPO companies

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Jae Jung Han --- , Korea Hyun-jung Kim --- , Korea

     It is difficult to predict future payoffs for initial public offerings (IPOs), since the multiple valuation method used to determine IPOs’ prices provides estimates by reflecting current sentiments in specific market environments. As our model reflects accounting information and stock...

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443. 

     Three-dimensional modelling of the circulation in False Bay, South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Coleman --- , South Africa GPJ Diedericks --- , South Africa AK Theron --- , South Africa J Lencart e Silva --- , United Kingdom

     False Bay is the largest coastal embayment along South Africa’s coastline. Despite notable contributions of various historical observational studies on the circulation within False Bay and the associated physical processes driving these flows, there remains significant uncertainty largely because the...

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444. 

     Strengthening the DNA barcode reference library for South African estuarine macrofauna

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Fagg --- , South Africa NL Phair --- , South Africa L Claassens --- , South Africa RSK Barnes --- , South Africa S von der Heyden --- , South Africa

     Seagrass ecosystems face many anthropogenic pressures, yet globally there is a lack of knowledge of their associated biodiversity. Molecular barcoding can aid in biomonitoring efforts, but few South African invertebrates are accounted for. We provide 48 new sequences for 15...

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445. 

     Developing a satellite-based frost risk model for the Southern African commercial forestry landscape

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Riyad Ismail --- , South Africa Jacob Crous --- , South Africa Giovanni Sale --- , South Africa Andrew Morris --- , South Africa Kabir Peerbhay --- , South Africa

     Frost is a sporadic meteorological event affecting the productivity of commercial forests in South Africa. Severe frost occurrences may cause irreversible damage to forest stands, slowing down tree growth or leading to tree mortality. Using the Moderate Imaging Spectrometer (spatial...

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446. 

     Can bait improve the efficiency of underwater video monitoring of fish in headwater streams? A case study from the Rondegat River, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SZ Bajaba --- , South Africa S Hugo --- , South Africa AJ van Wyk --- , South Africa SM Marr --- , South Africa NG Vine --- , South Africa OLF Weyl --- , South Africa

     The use of action cameras for underwater video sampling provides a non-harmful alternative for monitoring endangered and threatened fish populations in clear headwater streams. Here, we examine the use of baited remote underwater video systems (BRUVS) for the monitoring of...

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447. 

     Firm-specific orientations and manufacturing capability under institutional voids

     Item type: Journal Article • Journal: Africa Journal of Management • Authors: Deusdedit Augustine Rwehumbiza --- , United Republic of Tanzania

     Manufacturing capability (MC) is widely considered to depend on a strategic orientation of firms and institutional support. Remarkably, little is known about the influence of firm-specific orientations on manufacturing capability under institutional voids. This study examines the extent to which...

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448. 

     Moringa oleifira noise: Science or quackery and the way forward

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Margaret Huruma Mollel --- , Republic of South Africa Munyaradzi Mujuru --- , Republic of South Africa Vuyo Mjimba --- , Republic of South Africa Nicolas Darangwa --- , Republic of South Africa Richard Nyanzi --- , Republic of South Africa

     The moringa tree is a rising star in South Africa where it is increasingly playing a variety of social and economic roles, especially among the rural poor. Also known as the horseradish tree, moringa has been referred to as the...

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449. 

     Mothering in socioeconomically marginalised communities in South Africa: A conceptual development

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ingrid Onarheim Spjeldnæs --- , Norway

     From a sociopsychological perspective, mothering is variously described in the research literature. This theory synthesis research design study aims to integrate our current understanding of “the familiar” phenomenon of mothering by asking: (i) how mothering is understood across diverse realities...

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450. 

     Heavy metal profiles in limpets and algae on the Eastern Cape coast of South Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Mbandzi --- , South Africa MDV Nakin --- , South Africa GM Saibu --- , South Africa AO Oyedeji --- , South Africa

     Heavy metal pollution is an increasing threat to the marine environment and is a major health concern. Both marine limpets and algae have been employed as biomonitors elsewhere in the world, but there are few or no data for these...

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451. 

     A decade of surf-zone linefish monitoring in the Dwesa-Cwebe Marine Protected Area, with a preliminary assessment of the effects of rezoning and resource use

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Bullock --- , South Africa A Wood --- , South Africa VA Dames --- , South Africa JA Venter --- , South Africa J Greeff --- , South Africa

     An 11-year assessment of surf-zone linefish (marine fish captured on hook and line) was carried out in the Dwesa-Cwebe Marine Protected Area (MPA) in the Eastern Cape, South Africa, by research fishing to determine species and size composition, movement and...

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452. 

     Quality assessment of groundwater in an agricultural belt in eastern Nigeria using a Water Quality Index

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Ogechi L Alum --- , Nigeria Chukwuma OB Okoye --- , Nigeria Hillary O Abugu --- , Nigeria

     The physico-chemical and microbial analyses of fifteen hand-dug wells (HDWs) and six boreholes (BHs) in the Ezeagu and Uzo-uwani Local Governments Areas (LGAs) of Enugu State in south-eastern Nigeria were conducted to evaluate their water quality for potability. Samples were...

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453. 

     A critical review of macroinvertebrate-based bioassessment approaches in Africa’s lotic systems: developments, challenges, and legal requirements

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: John Peter Obubu --- , Ethiopia Seyoum Mengistou --- , Ethiopia Tadesse Fetahi --- , Ethiopia Wolfram Graf --- , Austria Robinson Odong --- , Uganda

     Worldwide, water resources have an impact on all forms of life as lotic systems are networks that interconnect water resources and land. They are important for navigation, water supplies, agriculture, recreation, and industrial development and help to regulate changes in...

     View item »
454. 

     Exit strategies for social venture entrepreneurs in sub-Sahara Africa: A literature review

     Item type: Journal Article • Journal: Africa Journal of Management • Authors: Alexander Tetteh Kwasi Nuer --- , Ghana Gert Van Dijk --- , The Netherlands Joost Jongerden --- , The Netherlands

     This paper reviews exit strategies for social venturing entrepreneurs. Exit is important for social venture entrepreneurs because they do not intend to stay in perpetuity in businesses they establish in the countries and communities where such businesses are set up...

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455. 

     Emotional intelligence and academic success among South African engineering students

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Barend J. van Wyk --- , South Africa Henry D. Mason --- , South Africa

     This study explored the relationship between emotional intelligence and academic success among a sample of 1 346 South African engineering students. Data were collected from the students using the Emotional Skills Assessment Process (ESAP). Academic success was calculated using the...

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456. 

     CFOs versus CEOs: Risk-taking incentives and decisions of corporate policies

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Han-Ching Huang --- , Taiwan Pei-Shan Tung --- ,

     We undertake a broad-based study of the effect of the equity incentives of Chief Executive Officers (CEOs) and Chief Financial Officers (CFOs) on decisions relating to corporate policies and find that the risk-taking incentives of acquirer CEOs have a greater...

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457. 

     An acoustic survey of beaked whale distribution at São Tomé and Príncipe, Gulf of Guinea, using an unmanned surface vessel

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Pierpoint --- , United Kingdom E Oliver --- , United Kingdom L Scala --- , United Kingdom D Hedgeland --- , United Kingdom

     The first records of beaked whales, including Cuvier’s beaked whale Ziphius cavirostris, are reported from an acoustic baseline survey in the territorial waters of the Democratic Republic of São Tomé and Príncipe, Gulf of Guinea, West Africa. The survey was...

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458. 

     Temporal and spatial variation of the molluscan community structure in Oualidia Lagoon, Moroccan Atlantic coast

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F El Asri --- , Morocco A Errhif --- , Morocco MN Tamsouri --- , Morocco H Nhhala --- , Morocco M Maanan --- , France H Zidane --- , Morocco

     The molluscan assemblages inhabiting the coastal waters of Oualidia Lagoon, Morocco, were studied during winter and summer of 2013. The taxonomic composition and diversity were determined at 43 sample sites. Thirty-four mollusc taxa were recorded in total, including 12 species...

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459. 

     Dropping plates to pick up aliens: towards a standardised approach for monitoring alien fouling species

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TG Loureiro --- , South Africa K Peters --- , South Africa TB Robinson --- , South Africa

     Biological invasions pose a major threat to biodiversity and significant investment is required to prevent the introduction of alien species, contain introduced populations and mitigate associated impacts. The implementation of standardised long-term monitoring programmes enables the early identification of new...

     View item »
460. 

     Application of DNA mini-barcoding reveals illegal trade in endangered shark products in southern Africa

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TA Asbury --- , South Africa R Bennett --- , United States AS Price --- , South Africa C da Silva --- , South Africa M Bürgener --- , South Africa JD Klein --- , South Africa SN Maduna --- , South Africa N Sidat --- , Mozambique S Fernando --- , Mozambique AE Bester-van der Merwe --- , South Africa

     In recent decades, a combination of increasing demand and economic globalisation has created a global market for elasmobranch products, especially the highly prized shark fins for Asian markets. Morphological species identification, as well as traditional cytochrome c oxidase subunit I...

     View item »
461. 

     Investigating the influence of the extreme Indian Ocean Dipole on the 2020 influx of Red-necked Phalaropes Phalaropus lobatus in Kenya

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Raphaël Nussbaumer --- , Kenya Mathieu Gravey --- , Switzerland Améline Nussbaumer --- , Kenya Colin Jackson --- , Kenya

     Ocean currents have wide-ranging impacts on seabird movement and survival. By extension, the extreme oscillations they are subject to, such as extreme Indian Ocean Dipole (IOD) events, can also be expected to dramatically influence seabird populations. This study links the...

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462. 

     The role of external information sources in organizational innovation in Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: David Adeyeye --- , Nigeria Adekemi Oluwadare --- , Nigeria Omolayo Oluwatope --- , Nigeria

     Traditionally, the focus of strategic management studies has been on technological innovation. However, recent studies have shown rising importance of non-technological innovation to firms’ productivity, especially in developing country contexts. One limitation in empirical firm innovation analyses this study attempts...

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463. 

     Evaluating practical teaching approach in civil engineering training among public universities of Ethiopia: students’ view and opinion

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Henok Marie Shiferaw --- , Ethiopia

     This study presents civil engineering students’ observations on the practical education they receive at public universities in Ethiopia. The teaching approach in Ethiopia heavily favours theory-based teaching over skills-based teaching and there has been a gap in studies addressing the...

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464. 

     Fire and herbivory shape belowground bud banks in a semi-arid African savanna

     Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AB Bombo --- , Brazil F Siebert --- , South Africa A Fidelis --- , Brazil

     Fire and herbivory are major drivers in tropical savanna ecosystems and they selected a flora composed of species able to cope with recurrent aboveground biomass removal. Renewal of the herbaceous stratum is made possible by resprouting, mostly through a belowground...

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465. 

     Perspectives on academic mentorship, research collaborations, career advice and work–life balance: a masterclass conversation with Professor Salim Abdool Karim

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Faheema Kimmie-Dhansay --- , South Africa Jawaya Shea --- , Seyi Amosun --- , South Africa Xan Swart --- , South Africa Lehana Thabane --- , Canada

     Mentorship and collaboration are fundamental to ensure success in research, particularly health research. In this article, we summarise a conversation between the Master’s in Biostatistics students at Stellenbosch University and Professor Salim Abdool Karim, the head of the Centre for...

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466. 

     Use of biological and water quality indices to evaluate conditions of the Upper uMngeni Catchment, KwaZulu-Natal, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R van Deventer --- , South Africa CD Morris --- , South Africa TR Hill --- , South Africa NA Rivers-Moore --- , South Africa

     Urban and agricultural land uses have the potential to severely compromise the quality of impoundments, if ineffectively managed and operated. A case in point is the upper uMngeni Catchment, including Midmar Dam, which is integral to the freshwater supply infrastructure...

     View item »
467. 

     Assessing fish community response to water quality and habitat stressors in KwaZulu-Natal, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Wesley Evans --- , South Africa Colleen T Downs --- , South Africa Matthew J Burnett --- , South Africa Gordon C O’Brien --- , South Africa

     The degradation of freshwater ecosystems can be attributed to stressors associated with the increased demand for water and other aquatic resources. Freshwater ecosystems face such challenges in supporting agriculture, industry, and high-density urban areas in KwaZulu-Natal (KZN) province, South Africa...

     View item »
468. 

     The Job Demands Scale for Hearing-Impaired Employees: Development and preliminary analysis of internal validity

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Strauss Chelius --- , South Africa Marissa Brouwers --- , South Africa Bouwer J Jonker --- , South Africa

     Few work participation scales have been normed on employees with hearing impairment. This creates an employment disparity against them. We developed a 57 item Job Demands for Hearing Impaired Employees (JDHIE) scale, providing preliminarily internal validity evidence. Respondents were 85...

     View item »
469. 

     Surviving the Genocide: The Singularity of Suffering in Yvonne Owuor's “Weight of Whispers”

     Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Edgar Fred Nabutanyi --- , Uganda

     Although Theodor Adorno famously declared in 1983 that to write a poem after Auschwitz is barbaric, profound acts of horror have inspired many literary masterpieces. The 1994 Rwandan genocide is no exception, having motivated some of Africa’s literary gems. While...

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470. 

     Rhizomic Writing and Reading of a Nation Coming to Birth in Yvonne A. Owuor’s Novel, Dust

     Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Christopher Odhiambo Joseph --- , Kenya

     Anchored on Deleueze and Guattari’s notion of rhizome, this article inspects the narrative strategy in Yvonne Owuor’s novel, Dust, in imagining the Kenyan nation, especially in the context of the contested presidential elections of 2007. It subsequently grapples with how...

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471. 

     Technological characterisation of wood from Australian red cedar after first thinning of a plantation at five years

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Kelvin Techera Barbosa --- , Brazil Andrey Pereira Acosta --- , Brazil Marília Lazarotto --- , Brazil Rafael Beltrame --- , Brazil Claudia Fernanda Lemons e Silva --- , Brazil Claudimar Sidnei Fior --- , Brazil

     Australian red cedar (Toona ciliata M. Roem.) is a forest species planted in Brazil especially for lumber production. This study aimed to evaluate technological properties of the wood after selective first thinning of a plantation 5 years after planting. The...

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472. 

     The role of innovation for employment growth among firms in developing countries: Evidence from Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Stephen Kehinde Medase --- , South Africa Michael Wyrwich --- , The Netherlands

     This paper examines the nexus between innovation and employment growth. In contrast to most studies that employ data from technologically advanced economies, the study uses well-documented data from a leapfrogging and catching-up economy in sub-Saharan Africa. We find a positive...

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473. 

     Knowledge sharing by clinicians using social media: A case study in Ethiopia

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Tesfa Tegegne Asfaw --- , Ethiopia Belisty Yalew Mekonnen --- , Ethiopia

     Social media is becoming an integral part of medical information dissemination. Health professionals adopt social media for clinical knowledge sharing and for social networking. However, there is no information specifically about use of social media by Ethiopian clinicians: The purpose...

     View item »
474. 

     Perceived stigma and self-identity among hearing impaired students: A brief report

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jianhong Zheng --- , China Ming Hong --- , China Sufeng Zhang --- , China Dmitry Grigoryevich Dzyakov --- , Belarus

     This study examines the perceived stigma and its relationship to self-identity among students with hearing impairment. Students (n = 151) with hearing impairment (female = 49.67%; mean age = 13.87 years, SD = 1.26 years) completed the Individual Perceived Stigma...

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475. 

     Ecological quality of the Alibori River, northern Benin, using macroinvertebrate indicators

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Agblonon Houelome --- , Benin TP Agbohessi --- , Benin D Adandedjan --- , Benin R Nechifor --- , Romania A Chikou --- , Benin IM Lazar --- , Romania P Laleye --- , Benin

     The Alibori River, which flows through Benin’s cotton crop regions, receives surface water from much of the cultivated land that is situated along its banks. Chemical pollution in surface runoff from this land use threatens the ecological quality of the...

     View item »
476. 

     Determinants of the adoption of green manufacturing practices by medium- and large-scale manufacturing industries in northern Ethiopia

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Adino Andaregie --- , Ethiopia Tessema Astatkie --- , Canada

     The barriers to and opportunities for adopting green manufacturing practices (GMP) have not been well investigated in Ethiopian manufacturing industries. The objectives of this study were to identify the potential barriers to and determinants of adopting GMP among medium- and...

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477. 

     IoT-powered system for environmental conditions monitoring in poultry house: A case of Tanzania

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Beston Lufyagila --- , Tanzania Dina Machuve --- , Tanzania Thomas Clemen --- , Germany

     Poultry health is imperative for the continued growth of poultry and increased production. Environmental conditions such as temperature, humidity, and ammonia gas have an impact on poultry health. They affect the respiratory system and eventually cause death. In Tanzania, most...

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478. 

     Unlocking the commercialization potentials of Moringa oleifera production in Southwestern Nigeria

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: T. O. Ojo --- , Nigeria A. A. Adetoro --- , Pietermaritzburg, South Africa A. A. Ogundeji --- , South Africa J. A. Belle --- , South Africa M. S. C. Ngidi --- , Pietermaritzburg, South Africa

     Despite the importance of Moringa oleifera tree for food security at the smallholder farmers’ level, there is no consolidated socioeconomic information about the crop such as its contribution to household food security and income, and its production potential, commercialization and...

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479. 

     The impact of open innovation challenges on automotive component manufacturers’ competitiveness: An insight from the South African automotive industry

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Arthur Mzwandile Gonyora [cor1] Stephen Migiro --- , South Africa Pfano Mashau --- , South Africa Bongani Ngwenya --- , South Africa

     Open innovation is a function of managing innovation challenges within an organization to achieve sustainable competitive advantage. To achieve this, organizations have to configure and regulate their strategic resources, harness their core competencies and absorptive capacity, and manage uncertainties inherent...

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480. 

     An ethogram for the nesting and breeding behaviour of the Hooded Vulture Necrosyrtes monachus

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Fiona K Fern --- , South Africa Lindy J Thompson --- , South Africa Colleen T Downs --- , South Africa

     Most vulture species worldwide are in decline and of conservation concern. Despite the growing attention to vultures, relatively few studies have focused on their breeding behaviour. Understanding all aspects of a species’ behaviour and its behavioural needs could help to...

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481. 

     A typology of social entrepreneuring models continued: Empirical evidence from South Africa

     Item type: Journal Article • Journal: Africa Journal of Management • Authors: Alex Bignotti --- University of Pretoria, South Africa Kerrin Myres --- Gordon Institute of Business Science (GIBS), University of Pretoria, South Africa

     There have been calls in social entrepreneurship research to move beyond conceptual arguments and to ground definitions and conceptualizations of this field in empirical research, especially pertaining to the developing world. Owing to the socially embedded nature of social enterprises,...

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482. 

     Medical intern job demands and job carry-over strain: The moderating role of psychosocial mentoring and job satisfaction

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Rita Ekele --- , Nigeria Vincent Onodugo --- , Nigeria Henry Okwo --- , Nigeria Sinclair Ogba --- , Nigeria Chike Onodugo --- , Nigeria Benjamin Chukwu --- , Nigeria

     This study examined the relationship between psychological job demands and job carry-over strain among medical interns, and the moderating role of mentoring and job satisfaction in that relationship. Medical interns (n = 229) at teaching hospitals in Southeastern Nigeria (male...

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483. 

     Assessment of long-term protection on the aboveground biomass and organic carbon content using two non-destructive techniques: case of the Sidi Toui National Park in southern Tunisia

     Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Roukaya Chibani --- , Tunisia Abderrazak Tlili --- , Tunisia Farah Ben Salem --- , Tunisia Mounir Louhaichi --- , Tunisia Azaiez Ouled Belgacem --- , Saudi Arabia Mohamed Neffati --- , Tunisia

     Long-term protection of arid ecosystems changes the vegetation and soil structures. The quantification of aboveground biomass and carbon content are among the principal indicators to evaluate these changes. Most methods used to quantify these parameters are costly, time consuming and...

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484. 

     Exploring how outreach team leaders perceive community health workers’ experiences of providing HIV services in KwaZulu-Natal, South Africa

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Gugulethu E Khumalo --- , South Africa Elizabeth Lutge --- , South Africa Tivani P Mashamba-Thompson --- , South Africa

     Objectives: In 2018, the KwaZulu-Natal Department of Health launched the ward-based primary health care outreach teams policy framework which sought to expand the community health worker (CHW) programme’s provision of longitudinal patient support, including human immunodeficiency virus (HIV) services in...

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485. 

     The asymmetric effect of COVID-19 government interventions on global stock markets: New evidence from QARDL and threshold regression approaches

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Mohammad Abdullah --- , Malaysia G. M. Wali Ullah --- , Australia Mohammad Ashraful Ferdous Chowdhury --- , Saudi Arabia

     We examine the asymmetric effect of COVID-19 government interventions on global stock markets using a sample of 61 countries over the period of January 2020 to December 2021, applying Quantile ARDL (QARDL) and panel threshold regressions. The QARDL results show...

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486. 

     Information sharing and fund performance: Evidence from the US mutual fund family

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Yaoyao Fu --- , China Peng Hua --- , P.R. China Qijie Chen --- , P.R. China Si Zhou --- , P.R. China

     In this paper, we investigate the information sharing within an organisation and its consequences on mutual fund performance. Using a sample from the US open-end mutual fund industry, information sharing inside an organisation is quantified via the dependence of individual...

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487. 

     The adoption of Software Engineering practices in a Scrum environment

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Oluwaseun Alexander Dada --- , Finland Ismaila Temitayo Sanusi --- , Finland

     The competition in the software market demands that the time required for any software product to reach the market be reduced if the product is to survive competition from other developers. The pursuit of this goal has led to the...

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488. 

     Cinereous Vulture Aegypius monachus movements between Europe and Africa show a pattern across the Strait of Gibraltar

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Juan Ramírez --- Malaga University, Spain Javier Elorriaga --- , Spain Andrés de la Cruz --- Spanish Institute of Oceanography (IEO), Spanish National Research Council (CSIC), Spain

     The biology of the Cinereous Vulture Aegypius monachus is well known across its breeding range, and the species’ dispersal and movements throughout Europe are widely recorded. However, the ecology of this vulture south of the Mediterranean Sea has been overlooked,...

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489. 

     Distribution and breeding numbers of a recently split species, the West African Crested Tern Thalasseus albididorsalis

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Jan Veen --- Wenum-Wiesel, The Netherlands Ahmed Amarejeyat --- Scientific Institute, Mohammed V University, Morocco Mohamed Aziz el Agbani --- Scientific Institute, Mohammed V University, Morocco Mohamed Camara --- Banc d'Arguin National Park, Mauritania Hanneke Dallmeijer --- Wenum-Wiesel, The Netherlands Yelli Diawara --- Banc d'Arguin National Park, Mauritania Moussa Sega Diop --- , Senegal Abdou Diouf --- , Senegal Eelke Folmer --- , The Netherlands Nicolas Gomis --- , Senegal Valentin Mansali --- , Senegal Hamilton Monteira --- , Guinea Bissau Moussa Samb --- , Senegal Lamin Manneh --- , The Gambia Effoleming Manga --- , Senegal Thor Veen --- Quest University Canada, Canada Wim C Mullié --- , Senegal

     This study investigated the distribution, numbers and conservation threats of the West African Crested Tern, which was recently elevated to full species after it was split from the Royal Tern with an American and African subspecies. In the period 1998–2019,...

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490. 

     Hotel facilities’ management practices and employee performance in Kenya

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Simon O Were --- Masinde Muliro University of Science and Technology, Kenya Vincent N Maranga --- Kenyatta University, Kenya

     This study investigated the efficacy of hotel facilities’ management practices on employee performance. A descriptive research survey was applied, while the study area was Nairobi County. The sampling techniques applied were a census, stratified, purposive and simple random sampling which...

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491. 

     Characterizations of maximal z°-ideals of C(X) and real maximal ideals of q(X)

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Z. Arjmandnezhad --- Shahid Chamran University of ahvaz, Iran F. Azarpanah --- Shahid Chamran University of ahvaz, Iran A.A. Hesari --- Shahid Chamran University of ahvaz, Iran A.R. Salehi --- Petroleum University of Technology, Iran

     In this paper we first give elementwise characterizations of real maximal ideals and maximal z°-ideals of C(X). Next, using this we characterize the real maximal ideals of the classical ring of quotients q(X) of C(X) and also maximal z°-ideals of...

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492. 

     Students’ experience and commentary on the internship programme of civil engineering training in public universities of Ethiopia

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Henok Marie Shiferaw --- University of Gondar, Ethiopia

     This paper presents challenges of the internship programme among civil engineering training in public universities of Ethiopia based on students’ experiences and comments. Sample students from two major public universities in Ethiopia shared their experiences. Validated standard questionnaires were used...

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493. 

     Management barriers to innovation performance in Nigerian manufacturing sector

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Waliu M. Adegbite --- College of Business & Economics, University of Johannesburg, South Africa Cookie M. Govender --- College of Business & Economics, University of Johannesburg, South Africa

     Innovation is an essential strategy for businesses to increase performance and profitability. While current literature focuses on technology and other technical barriers to innovation, many businesses in developing countries are unaware of the significance of organizational policy and practices on...

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494. 

     Artistic gymnastics mirror teaching approach efficacy for improving interpersonal skills of college students

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Zan Zhou --- Shaoxing University, China Haibo Tian --- Shaoxing University, China Siwei Luo --- Shaoxing University, China Yao Wang --- Shaoxing University, China Dan Shi --- Zhejiang Yuexiu University, China

     This study aimed at improving the interpersonal skills of college students through an intervention of artistic gymnastics mirror teaching approach. Following a longitudinal study quasi-experimental design, 30 students were randomly assigned to the artistic gymnastics' intervention, and 30 students were...

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495. 

     The African Bird Atlas Project: a description of the project and BirdMap data-collection protocol

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Michael Brooks --- University of Cape Town, South Africa Sanjo Rose --- University of Cape Town, South Africa Res Altwegg --- University of Cape Town, South Africa Alan TK Lee --- University of Cape Town, South Africa Henk Nel --- , South Africa Ulf Ottosson --- A.P. Leventis Ornithological Research Institute, Nigeria Ernst Retief --- , South Africa Chevonne Reynolds --- University of the Witwatersrand, South Africa Peter G Ryan --- University of Cape Town, South Africa Sidney Shema --- , Kenya Talatu Tende --- A.P. Leventis Ornithological Research Institute, Nigeria Les G Underhill --- University of Cape Town, South Africa Robert L Thomson --- University of Cape Town, South Africa

     The African Bird Atlas Project (ABAP) is a citizen-science bird-monitoring programme that relies on a robust, repeatable protocol (BirdMap) and allows insights into the distributions of African birds and their conservation. The protocol involves collecting bird lists within spatial sampling...

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496. 

     A baseline assessment of coastal pH variability in a temperate South African embayment: implications for biological ocean acidification research

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Edworthy --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa WM Potts --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa S Dupont --- University of Gothenburg, Sweden MI Duncan --- Rhodes University, South Africa TG Bornman --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa

     Compared with the open ocean, knowledge of pH variability in coastal waters is rudimentary, especially in Africa. This is concerning as quantifying local pH conditions is critical when assessing the response of coastal species to future ocean acidification scenarios. The...

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497. 

     Organisational support: Associations with psychological contracts and turnover intention in the South African food manufacturing industry

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Michael Loudwick Mathebula --- University of Johannesburg, South Africa Jeremy Mitonga-Monga --- University of Johannesburg, South Africa

     The study examined the role of employee perceived organisational support (POS) in the relationship between employee psychological contract (PC) and turnover intention (TUI). The participants comprised employees in a South African (SA) food manufacturing company (n= 385 employees; female =...

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498. 

     On rings related to filial and left filial rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D.I.C. Mendes --- University of Beira Interior, Portugal

     A ring R is called filial (left weakly filial) if it satisfies the following condition: for all subrings J and I of R, if J is an ideal of I and I is an ideal of R, then J is...

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499. 

     Solvability and nilpotency of expanded groups relative to the nearring of zero and congruence preserving functions

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Gary L. Peterson --- James Madison University, USA Stuart D. Scott --- University of Auckland, New Zealand

     In this paper we study solvability and nilpotency of an expanded group relative to the nearring of zero and congruence preserving functions of the expanded group. A particular case of interest is when the expanded group is a nearring module...

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500. 

     Developing an improved reverse engineering adoption model towards the improvement of performance in metal engineering industries

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yichalewal Goshime --- Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia Daniel Kitaw --- Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia Frank Ebinger --- Erlangen University, George Simon Ohm Technical Institute, Nuremberg Campus of Technology, Germany Kassu Jilcha --- Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia

     Purpose: This research aims to develop an improved model that promotes reverse engineering /RE/ practice in metal engineering industries (MEIs). RE is one cost-effective technology transfer /TT/ and innovation method that improves organizational performance. However, only a few scholars have...

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501. 

     Technology management practices and innovation: Empirical evidence from medium- and large-scale manufacturing firms in Ethiopia

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mesfin Mala Kalko --- Tomas Bata University in Zlin, Czech Republic Obsa Teferi Erena --- Hawassa University, Ethiopia Sara Adugna Debele --- Hawassa University, Ethiopia

     In order to investigate empirically the effects of technology management on firm innovation, this paper considers the antecedents and multidimensional views of technology management mechanisms on innovation performance in medium- and large-scale manufacturing firms in a developing country, namely Ethiopia...

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502. 

     Normal ordering in the shift algebra and the dual of Spivey’s identity

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Matthias Schork --- , Germany

     Spivey’s Bell number identity involving Stirling numbers of the second kind was derived by Spivey considering set partitions. Since its original derivation it has been derived (and generalized) by many authors using different techniques. In particular, Katriel gave a proof...

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503. 

     Considering childbearing in the age of highly active antiretroviral therapy (HAART): Views of HIV-positive couples

     Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Vezumuzi Ndlovu [CXX0001]

     Objectives: Based on a qualitative study conducted in Bulawayo, Zimbabwe, this article examines how the availability of HAART since April 2004 may impact the views and choices of HIV-positive couples on childbearing. Methods: In-depth interviews were conducted with 15 couples...

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504. 

     Stigma as ‘othering’ among Christian theology students in South Africa

     Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Adrian D. Van Breda [d74e19]

     HIV is a health and developmental crisis that has profoundly challenged the Christian church in sub-Saharan Africa. Responding to stigma and prejudice against HIV and people living with HIV and AIDS has been a major concern of theologians and Christian...

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505. 

     How is becoming pregnant whilst HIV-positive? Voices of women at a selected rural clinic in Mpumalanga Province of South Africa

     Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Livhuwani Muthelo --- University of Limpopo, South Africa Judith Prudence Mgwenya --- University of Limpopo, South Africa Rambelani Nancy Malema --- University of Limpopo, South Africa Tebogo Mothiba --- University of Limpopo, South Africa

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506. Translocation of black‐headed dwarf chameleons Bradypodion melanocephalum in Durban, KwaZulu‐Natal, South Africa

     Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: AdrianJ. Armstrong --- Ezemvelo KZN Wildlife, South Africa

     The coastal population of the black‐headed dwarf chameleon Bradypodion melanocephalum is threatened by rapid urban expansion in and around Durban which lies in the centre of the chameleon population's distribution. Translocations of threatened species from urban development sites is a...

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507. Within and between‐site distribution of frog species on the Udzungwa Plateau, Tanzania

     Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Lucinda Lawson --- University of Chicago, David Moyer --- Wildlife Conservation Society,

     Amphibian distribution and abundance patterns are linked with environmental factors that define the suitable habitat for each species on both macro and micro scales. Determining the distribution and habitat requirements of species is a necessary first step in monitoring population...

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508. 

     A trait database for southern African freshwater invertebrates

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Oghenekaro N Odume --- Institute for Water Research, Rhodes University, South Africa Frank C Akamagwuna --- Institute for Water Research, Rhodes University, South Africa Pindiwe Ntloko --- Institute for Water Research, Rhodes University, South Africa Helen F Dallas --- , South Africa Chika F Nnadozie --- Institute for Water Research, Rhodes University, South Africa Helen M Barber-James --- , South Africa

     Invertebrates are often used as indicators of ecosystem health. In community ecology, the use of organism traits (e.g. behavioural, biological or ecological) can be of value in relation to impact diagnosis and assemblage prediction. It has also been recognised that...

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509. 

     Validation of growth zone formation in Oreochromis mossambicus otoliths collected from an irrigation pond in the Sundays River Valley, Eastern Cape, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Mofu --- Rhodes University, South Africa T Dalu --- University of Mpumalanga, South Africa RJ Wasserman --- South African Institute for Aquatic Biodiversity, South Africa DJ Woodford --- University of the Witwatersrand, South Africa OLF Weyl --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa

     In fisheries science, life-history trait information is widely used to estimate fish population recruitment, growth, and mortality. The aging and growth of Oreochromis mossambicus from the Sundays River Valley irrigation pond in the Eastern Cape province of South Africa were...

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510. 

     The MAX puzzle in a frontier market before and during the Covid-19 pandemic

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Khoa Dang Duong --- Ton Duc Thang University, Vietnam Man Minh Tran --- Ton Duc Thang University, Vietnam Qui Nhat Nguyen --- Portfolio Management, Vietnam Hoa Thanh Phan Le --- Van Lang University, Vietnam

     This study analyses the MAX anomaly in a frontier market before and during the Covid19 pandemic. Our sample has 39,673 firm-month observations of non-financial firms in Vietnam from 2008 to 2021. Using the Carhart four-factor model augmented with MAX anomaly,...

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511. 

     On a functional identity involving inverses on matrix rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nadeem Ahmad Dar --- Government HSS, India Wu Jing --- Fayetteville State University, USA

     Let be a division ring which is not a field with characteristic different from 2 and 3, and with n > 1. The purpose of this paper is to characterize additive maps f,g : satisfying the functional identity f(X) +...

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512. 

     Corporate social responsibility and employee knowledge sharing: The roles of organisational trust and exchange quality

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Si Qian --- Beijing Technology and Business University, China Ke Ma --- Beijing Technology and Business University, China Siqi Guo --- Beijing Technology and Business University, China

     Drawing on the social exchange theory, this study aimed to examine the relationship between perceived corporate social responsibility (CSR) and employee knowledge-sharing behaviour, including the roles organisational trust and exchange quality play in that relationship. Survey data were collected from...

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513. 

     Maximal subrings of classical integral domains

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Alinaghizadeh --- Shahid Chamran University of Ahvaz, Iran A. Azarang --- Shahid Chamran University of Ahvaz, Iran

     It is shown that if R is an integral domain with |R| = 2ʿ, then either R has a maximal subring or R has a prime ideal P which is not a maximal ideal of R, Char(R/P) = Char(R) and...

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514. 

     On the extent of the injectivity of direct sums of modules

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Sergio R. López-Permouth --- Ohio University, USA Bülent Saraç --- Hacettepe University, Turkey

     Inspired by the fact that a ring is right Noetherian if and only if direct sums of certain injective right modules are once again injective, we propose a way to not only decide whether a ring is Noetherian but to...

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515. 

     Towards developing a national framework for industry 4.0 in African emerging economies

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olugbenga Ayo Ojubanire --- Euromed University of Fes, Morocco Hicham Sebti --- Euromed University of Fes, Morocco Sabrina Berbain --- ISG International Business School, France

     Unlike past industrial eras, the Fourth Industrial Revolution (industry 4.0) is accelerated and continues to gain momentum. While developed economies are making remarkable progress and contributing geometrically to the global value chain, African emerging economies have continued to grapple with...

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516. 

     Features of Turner syndrome in patients managed at the adult endocrinology clinic, Steve Biko Academic Hospital

     Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: M. Noeth --- University of Pretoria, South Africa T. Kemp --- University of Pretoria, South Africa T. Botha --- University of Pretoria, South Africa

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517. 

     Moving the Margins: Gender Inequality and Homelessness in Amma Darko’s Faceless

     Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Puleng Segalo --- University of South Africa, South Africa Theresah Patrine Ennin --- University of South Africa, South Africa

     Many African women writers have engaged with issues of social justice, development and the need to pay attention to the persistent inequalities that eat away the fabric of many societies. To this day, they continue to be at the coalface...

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518. 

     Almost clean elements in C(X)

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: R. Mohamadian --- Shahid Chamran University of Ahvaz, Iran

     An element a in a ring R is called almost clean if a can be written as a = r + e, where r is a regular (non zero-divisor) element and e is an idempotent. It is well known that...

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519. 

     A sufficient condition for planar graphs to be DP-4-colorable

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ziwen Huang --- Yichun University, China Jianqing Ma --- Wuhan University of Science and Technology, China Xiaoxia Zhang --- Xinyang Normal University, China

     In 2017, Dvořák and Postle introduced DP-coloring (known as correspondence coloring) as a generalization of list coloring. Recently, a lot of attention has been put on sufficient conditions for planar graphs to be DP-4-colorable. Liu et al. [17] proved that...

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520. 

     Completeness of the road-to-health card and factors affecting knowledge and practices of growth monitoring and promotion in caregivers of young children in KwaZulu-Natal

     Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: T Mabesa --- University of KwaZulu-Natal, South Africa S Knight --- University of KwaZulu-Natal, South Africa N Nkwanyana --- University of KwaZulu-Natal, South Africa

     View item »
521. 

     Feasibility and acceptability of continuous at-home glucose monitoring during pregnancy: a mixed-methods pilot study

     Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Alastair van Heerden --- Human Sciences Research Council, South Africa Şefki Kolozali --- University of Essex, United Kingom Shane A Norris --- University of the Witwatersrand, South Africa

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522. 

     Determinants of technology-intensive exports: The case of African countries, 1995–2017

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Agathe Fonkam --- University of Johannesburg, South Africa

     An extensive literature has investigated the driving forces behind high-technology exports, but most studies focus on developed countries and developing countries outside Africa. The purpose of this paper is to assess the main factors determining export-oriented technological change, using the...

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523. 

     What is the motivation? The political economy of engineers regulation in Kenya

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: O. A. K’Akumu --- University of Nairobi, Kenya

     Regulation is usually justified by the public interest in theory but in practice may end up serving special interests. This paper evaluates the regulatory frameworks for engineers and engineering technologists in Kenya with the view to establishing whether they take...

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524. 

     Depth of C(X)-modules

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: F. Azarpanah --- Shahid Chamran University of ahvaz, Iran A.A. Hesari --- Shahid Chamran University of ahvaz, Iran A.R. Salehi --- Petroleum University of Technology, Iran

     It is shown that the depth of every module over C(X), the ring of all real valued continuous functions on a topological space X, is at most 1. This result is proved for modules over rings of a much more...

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525. 

     A note on J -spaces and relatively connected subsets

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Simo S. Mthethwa --- University of KwaZulu-Natal, South Africa Ali Taherifar --- Yasouj University, Iran

     In this note we present an investigation of J -spaces and other types of spaces related to J -spaces. We characterise these spaces using the notion of relatively connected subsets. For a completely regular J -space X, we give a...

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526. 

     A tree-level analysis of baboon damage in commercial forest stands using deep learning techniques

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Regardt Ferreira --- Nelson Mandela University, South Africa Kabir Peerbhay --- , South Africa Josua Louw --- Nelson Mandela University, South Africa Ilaria Germishuizen --- Institute for Commercial Forestry Research, South Africa Andrew Morris --- Institute for Commercial Forestry Research, South Africa Romano Lottering --- University of KwaZulu-Natal, South Africa

     Commercial forest plantations in South Africa are homogeneous monocultures of highly bred exotic species grown to deliver timber products of the best potential quality. As such, these stands are susceptible to adverse effects of biotic and abiotic factors, and therefore...

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527. 

     Preliminary investigation into deducing breeding success of African Penguins Spheniscus demersus from automated transponder reader data to reduce disturbance

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Mpumalanga Mnyekemfu --- University of the Western Cape, South Africa Peter J Barham --- University of the Western Cape, South Africa Barbara Barham --- , United Kingdom Lauren Waller --- University of the Western Cape, South Africa Katrin Ludynia --- University of the Western Cape, South Africa Gavin W Maneveldt --- University of the Western Cape, South Africa

     The Endangered African Penguin Spheniscus demersus is in serious decline, with the total population falling at a rate of ∼5% per annum. The need to carry out regular monitoring to collect demographic and phenological data to assist in the planning...

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528. 

     Resilient learning experiences of university students: Exploring positive future orientations

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- Tshwane University of Technology, South Africa Barend J. van Wyk --- Tshwane University of Technology, South Africa

     This qualitative study explored the resilient learning experiences of 68 first-year university students (female = 36.76%, age range = 18–23 years). Data were collected using narrative sketches. Interpretative phenomenological analysis revealed three themes: the wish, peaks and valleys, and from...

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529. 

     Some questions on partially ordered rings – a survey

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jingjing Ma --- University of Houston-Clear Lake, USA

     This survey provides a brief overview and new developments on some questions in the area of partially ordered and lattice-ordered rings and algebras.

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530. 

     Informal structures in knowledge and the effectiveness of the transfer process among construction workers in Dar es Salaam, Tanzania

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Justine Mselle --- Department of Land Management and Valuation, Ardhi University, Tanzania Samwel Alananga --- Department of Land Management and Valuation, Ardhi University, Tanzania Sarah Phoya --- Department of Building Economics, Ardhi University, Tanzania Harriet Eliufoo --- Department of Building Economics, Ardhi University, Tanzania

     The combination of both Structured Knowledge Transfer (SKT) and Unstructured Knowledge Transfer (UKT) processes is important for Knowledge Transfer Effectiveness (KTE) in construction workplace practices. However, the extant literature suggests that there is a high level of KTE in informal...

     View item »
531. 

     Diversity and abundance of avifauna in the Suba Forest area, central Ethiopia

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Gemechis B Mosisa --- Haramaya University, Ethiopia Nega Tassie --- Bahir Dar University, Ethiopia Sintayehu W Dejene --- Haramaya University, Ethiopia

     Birds are one of the best-described taxa, but detailed knowledge about most bird species in Ethiopia remains rare, which hinders the development and evaluation of conservation strategies in the region. In this study, we estimated bird species diversity and abundance...

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532. 

     PrEP retention predictors among key populations in urban areas of Zimbabwe — a machine learning approach

     Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Bridgette Bero --- National University of Science and Technology, Zimbabwe Chipo Zidana --- Botswana International University of Science and Technology, Botswana Sarudzai Portia Showa --- National University of Science and Technology, Zimbabwe

     Pre-exposure prophylaxis (PrEP) success depends on adherence and hence retention in care. It is vital to find factors that affect PrEP retention to make this HIV-prevention method successful. The main objectives of this study were to identify the major determinants...

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533. 

     Fatigue and mind-wandering among Chinese adolescents: Moderation by rumination and mediation by Internet addiction

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: --- College of Education Sciences, Wulingshan K-12 Educational Research Center, Huaihua University, China

     This study examined the mediating role of Internet addiction in association with fatigue and mind-wandering and the moderating role of rumination in that relationship. A sample of 3 732 Chinese adolescents (Mean age = 14.98 years, SD = 1.63) completed...

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534. 

     Lepidoptera as a tool for the assessment of human disturbance impacting ecological and taxonomic diversity in the Choke Mountains, Ethiopia

     Item type: Journal Article • Journal: African Zoology • Authors: --- Ethiopian Biodiversity Institute, Ethiopia --- University of Brescia, Italy --- University of Brescia, Italy --- University of Molise, Italy

     In tropical countries, frequent anthropogenic disturbances are primary drivers of the reduction in community diversity and local extinction of many insect taxa, including Lepidoptera. We assessed the impact of anthropogenic disturbances on lepidopteran assemblages across five different land use types...

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535. 

     The status of COI and 12S rRNA DNA barcode reference libraries for freshwater fish in South Africa: Implications for future eDNA projects

     Item type: Journal Article • Journal: African Zoology • Authors: --- University of KwaZulu-Natal, South Africa --- University of KwaZulu-Natal, South Africa --- University of KwaZulu-Natal, South Africa --- University of KwaZulu-Natal, South Africa

     Environmental DNA metabarcoding (eDNA) is a rapidly emerging field in which high-throughput sequencing is used to catalogue the biodiversity of ecosystems through the amplification of DNA extracted from environmental samples (water, air, faeces and soil). Although eDNA has strong links...

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536. 

     Wing-moult and seasonal occurrence of sunbirds (Nectariniidae) captured at four sites in the Eastern Cape, South Africa

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Bo T Bonnevie --- Rhodes University, South Africa Adrian JFK Craig --- Rhodes University, South Africa Pat E Hulley --- Rhodes University, South Africa Albert Schultz --- , South Africa Anthony J Tree --- Rhodes University, South Africa

     Ringing activity in the Eastern Cape province, South Africa, spanned 30 years, with three sites active concurrently over a 14-year period, and three sites over a 6-year period. In total, in the course of 714 ringing days, in all months,...

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537. 

     A demonstration of the value of recapture data for informing moult phenology models for avian species with imperfect moult data

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Philipp H Boersch-Supan --- , United Kingdom Alan Tristram Kenneth Lee --- University of Cape Town, South Africa Hans-Dieter Oschadleus --- University of KwaZulu-Natal, South Africa

     The Underhill–Zucchini model has revolutionised the study of moult in the context of birds’ annual cycles, but, as for all statistical models, inferences are vulnerable to violations of model assumptions. In particular, the standard Underhill–Zucchini models for moult phenology are...

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538. 

     Multiple circannual moult strategies: feather tract moult patterns for common birds of the central Fynbos region, South Africa

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Alan TK Lee --- University of KwaZulu-Natal, South Africa

     When and where birds lose their feathers during the annual moult cycle is a fascinating subject, but there is little reported on patterns and strategies of moult for most African bird species. While there have been great advances in our...

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539. 

     Using generalised additive models to visualise the annual cycle of primary feather moult patterns

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Rebecca R Irons --- University of Cape Town, South Africa Alan TK Lee --- University of Cape Town, South Africa Robert L Thomson --- University of Cape Town, South Africa Birgit Erni --- University of Cape Town, South Africa

     Moult is a vital but energy-demanding event in a bird's phenological cycle. Primary moult is the shedding of old feathers and the regeneration of new flight feathers to maintain efficient functioning of these critical structures. Life history events, such as...

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540. 

     Water quality monitoring and measuring physicochemical parameters using wireless sensor networks

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Satyanarayana Murthy --- , India SF Ahamed --- , India

     In a world grappling with the dire consequences of poor sanitation and inadequate water conditions, there is an urgent need for a comprehensive solution. The staggering statistics of over 400 million affected cases and 15–25 million lives lost worldwide underscore...

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541. 

     Analysis of freshwater diatom deformities in the Karoo, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Holmes --- Nelson Mandela University, South Africa EE Campbell --- Nelson Mandela University, South Africa M de Wit --- Africa Earth Observatory Network (AEON) – Earth Stewardship Science Research Institute (ESSRI) Nelson Mandela University, South Africa JC Taylor --- North-West University, South Africa

     Several studies regarding the effects of excess nutrients and metals as possible causes of deformities found in diatom cells have been conducted in Europe, North America and Australia. This is the first study in South Africa which catalogued and analysed...

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542. 

     A bibliometric study on diatom DNA metabarcording for water quality monitoring: a global perspective

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EO Mbao --- The Technical University of Kenya, Kenya J Nyika --- The Technical University of Kenya, Kenya T Sheng --- Nanjing Agricultural University, China B Ochieng --- State Key Laboratory of Lake Science and Environment Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences (CAS), China L Sitoki --- The Technical University of Kenya, Kenya SO Oduor --- Egerton University, Kenya N Kitaka --- Egerton University, Kenya L Olaka --- The Technical University of Kenya, Kenya C Tan --- University of Tours, France

     Aquatic biota have been used for decades in water quality assessment since they reflect the changing physico-chemical conditions of waterbodies. Among the aquatic organisms used in biological assessment are diatoms. Initially, morphological studies of diatoms were preferred in monitoring but...

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543. 

     Differential impact of ICT on MSMEs' productivity in Africa’s emerging market

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Musefiu Adebowale Adeleke --- University of Ibadan, Nigeria Adegoke Ibrahim Adeleke --- Central Bank of Nigeria, Nigeria

     The observed low level of information and communication technology (ICT) usage among micro, small, and medium-sized enterprise (MSME) firms in many African countries may serve as a major constraint to their productivity. The productivity of service and manufacturing firms is...

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544. 

     The Golomb topology of polynomial rings, II

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dario Spirito --- Università degli Studi di Udine, Italy

     We study the interplay of the Golomb topology and the algebraic structure in polynomial rings K[X] over a field K. In particular, we focus on infinite fields K of positive characteristic such that the set of irreducible polynomials of K[X]...

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545. 

     Hospitality in volunteer engagement: navigating complexities in residential care facilities for children

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Rodney Westerlaken --- NHL Stenden University of Applied Sciences, The Netherlands

     This study investigates the multifaceted realm of volunteer engagement in orphanages and residential care facilities for children, as places of hospitality towards volunteers, in low- and middle-income countries. While the positive outcomes of such engagements, including assistance, economic contributions and...

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546. 

     A quantitative analysis of obstacles to innovation among small, micro, and medium-sized enterprises: Evidence from South Africa

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Siyasanga Qomoyi --- Equitable Education and Economies, Human Sciences Research Council, Sikhulumile Sinyolo --- Public Health, Societies and Belonging, Human Sciences Research Council, Kgabo Hector Ramoroka --- Centre for Science, Technology and Innovation Indicators, Human Sciences Research Council, Amy Kahn --- Centre for Science, Technology and Innovation Indicators, Human Sciences Research Council, Luthando Zondi --- Centre for Science, Technology and Innovation Indicators, Human Sciences Research Council,

     Firm-level innovation in sub-Saharan Africa remains under-researched. To address this gap, this paper examines the obstacles to innovation faced by small, micro, and medium-sized enterprises (SMMEs) in South Africa. Using the 2018 Business Innovation Survey, we apply the double-hurdle model...

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547. 

     Distribution, habitat and vulnerability to climate change of the Endangered Leptopelis xenodactylus

     Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Kirsty J. Kyle --- North-West University, South Africa Louis H. Du Preez --- North-West University, South Africa James Harvey --- 41 Devonshire Avenue, South Africa Adrian J. Armstrong --- Centre for Functional Biodiversity, School of Life Sciences, University of KwaZulu-Natal, South Africa

     Leptopelis xenodactylus is a little-known, Endangered species of frog that is thought to be endemic to the KwaZulu-Natal Province of South Africa. In an effort to determine the distribution of this species more accurately, a working species distribution model was...

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548. 

     When every regular ideal is S-finite

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohamed Chhiti --- University S.M. Ben Abdellah Fez, Morocco Salah Eddine Mahdou --- University S.M. Ben Abdellah Fez, Morocco

     In this paper, we introduce a new class of ring called regular S-Noetherian ring, which is a weak version of S-Noetherian ring property. Any S-Noetherian ring is naturally a regular S-Noetherian ring, and in the domain context, these two forms...

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549. 

     Hooded Vultures Necrosyrtes monachus are still declining in West Africa: a nearly 50-year assessment study (1969–2019)

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- University Centre of Tenkodogo/University Thomas Sankara, Burkina Faso Idrissa Ouédraogo --- University Joseph Ki-Zerbo, Burkina Faso Adama Ouéda --- University Joseph Ki-Zerbo, Burkina Faso Lindy J Thompson --- , South Africa Peter DM Weesie --- University of Groningen, The Netherlands

     Large-scale declines in vulture populations have been recorded in West Africa. One concern is that the current trend in Hooded Vulture Necrosyrtes monachus populations in West Africa is poorly known. To help fill this knowledge gap, we conducted nationwide road...

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550. 

     The number of distinguishing colorings of a Cartesian product graph

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Saeid Alikhani --- Yazd University, Iran Mohammad H. Shekarriz --- Yazd University, Iran

     A vertex coloring is called distinguishing if the identity is the only automorphism that can preserve it. The distinguishing threshold θ(G) of a graph G is the minimum number of colors k required that any arbitrary k-coloring of G is...

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551. 

     Uniformly S-Noetherian rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mingzhao Chen --- Leshan Normal University, China Hwankoo Kim --- Hoseo University, Republic of Korea Wei Qi --- Shandong University of Technology, China Fanggui Wang --- Sichuan Normal University, China Wei Zhao --- ABa Teachers University, China

     Let R be a ring and S be a multiplicative subset of R. Then R is called a uniformly S-Noetherian ring if there exists s ∈ S such that, for any ideal I of R, sI ⊆ K for some...

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552. 

     English instruction experiences of native South African speech-language and/or hearing (SLH) undergraduate students: An exploratory study

     Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Katijah Khoza-Shangase --- University of the Witwatersrand, South Africa Margo Kalenga --- University of the Witwatersrand, South Africa

     This study explored the experience of English as an instruction medium by South African Speech-Language and Hearing (SLH) students whose first language is not English ( African language speakers). A purposive sample of 24 female students for whom English was...

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553. 

     Assessment of surface water quality in a highly anthropised semi-arid catchment (Case of Wadi El Hatab Basin, Tunisia, North Africa)

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: W Hayouni --- University of Sfax, Tunisia N Chkir --- University of Sfax, Tunisia S Pistre --- Université Montpellier, France K Zouari --- University of Sfax, Tunisia

     Anthropogenic contamination of surface waters is a critical issue in urbanised catchments, especially in Mediterranean environments with scarce water resources and intermittent rivers. A combined hydro-geochemical and multivariate statistical methodology has been applied to evaluate the surface water quality of...

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554. 

     Volunteering dynamics in leisure, tourism and hospitality: developing sustainable practices for well-being and social impact

     Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Bertine Bargeman --- Breda University of Applied Sciences, The Netherlands Licia Calvi --- Breda University of Applied Sciences, The Netherlands Rodney Westerlaken --- NHL Stenden University of Applied Sciences, The Netherlands Geesje Duursma --- NHL Stenden University of Applied Sciences, The Netherlands

     This article explores the multifaceted landscape of volunteering in leisure, tourism and hospitality (LTH) organisations, acknowledging its fundamental role in civil society, and serves as the inception point for an in-depth research project. Volunteerism is explored in diverse forms, ranging...

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555. 

     Generalized derivations with nilpotent values in semiprime rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Cheng-Kai Liu --- National Changhua University of Education, Taiwan

     Let R be a (semi-) prime ring with extended centroid C, let f(X 1, … , Xk ) be a multilinear polynomial over C in k noncommutative indeterminates which is not central-valued on R and let g be a generalized derivation of...

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556. 

     On uniquely packable trees

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Alochukwu --- Albany State University, USA M. Dorfling --- University of Johannesburg, South Africa E. Jonck --- University of the Witwatersrand, South Africa

     An i-packing in a graph G is a set of vertices that are pairwise at distance more than i. A packing colouring of G is a partition X = {X 1, X 2, . . . , X k...

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557. 

     Long-term changes in petrel populations on Inaccessible Island, Tristan da Cunha, inferred from the diet of Brown Skuas Stercorarius antarcticus

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- University of Cape Town, South Africa

     Petrels that breed in burrows and return to their colonies after dark are among the most poorly studied seabirds. Brown Skuas Stercorarius antarcticus (family Stercorariidae) are major predators of burrowing petrels at many seabird breeding islands in the Southern Ocean,...

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558. 

     The isomorphism problem for rational group algebras of finite metacyclic nilpotent groups

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Àngel García-Blázquez --- Universidad de Murcia, Spain Ángel del Río --- Universidad de Murcia, Spain

     We prove that if G and H are finite metacyclic groups with isomorphic rational group algebras and one of them is nilpotent, then G and H are isomorphic.

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559. 

     On emergent mobile phone-based social engineering cyberattacks in developing countries: The case of the Zambian ICT sector

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Aaron Zimba --- ZCAS University, Zambia, George Mukupa --- Mulungushi University, Zambia, Victoria Chama --- University of Cape Town, South Africa,

     The number of registered SIM cards and active mobile phone subscribers in Zambia in 2020 surpassed the population of the country. This development and the integration of mobile phone systems with financial payment systems has not come without a cost...

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560. 

     ‘The South in the North’: Worlding Kenyanness in Alex Chamwada’s TV series Daring Abroad

     Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Stephen Mutie --- Kenyatta University, Kenya

     Recently, there has been a proliferation of narratives that recount the daily experiences of Africans in White spaces. However, the scholarship on how Black people navigate predominantly White spaces has remained scanty. This article aims to help fill this gap...

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561. 

     On (k, ℓ)-locating colorings of graphs

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Michael A. Henning --- University of Johannesburg, South Africa Mostafa Tavakoli --- Ferdowsi University of Mashhad, Iran

     Let c: V(G) → {1, . . . , ℓ} = [ℓ] be a proper vertex coloring of G and C(i) = {u ∈ V(G): c(u) = i} for i ∈ [ℓ]. The k-color code rk (v|c) of vertex v...

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562. 

     Space and spatially structured environmental variables account for variation in blackfly and mayfly communities in sub-tropical South African rivers

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PA Ramulifho --- University of South Africa, South Africa SH Foord --- University of Venda, South Africa NA Rivers-Moore --- University of KwaZulu-Natal, South Africa

     Using aquatic invertebrate assemblages for bioassessment of streams and rivers is a fast and cost-effective approach to studying the impact of environmental stressors in aquatic ecosystems. The use of aquatic invertebrates is premised on their predictable responses to environmental stressors...

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563. 

     Clinical insights from continuous glucose monitor use in patients living with type 1 diabetes in rural Malawi

     Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: G Ferrari --- Brigham and Women’s Hospital, USA M Boti --- , Malawi D Nakotwa --- , Malawi A Gomber --- Brigham and Women’s Hospital, USA MM Coates --- Brigham and Women’s Hospital, USA K Kumwenda --- , Malawi F Valeta --- , Malawi L Drown --- Brigham and Women’s Hospital, USA A Thapa --- Brigham and Women’s Hospital, USA V Mithi --- , Malawi A Msekandiana --- Baylor, College of Medicine Children’s Foundation, Malawi C Kachimanga --- , Malawi PH Park --- Brigham and Women’s Hospital, USA AJ Adler --- Brigham and Women’s Hospital, USA G Bukhman --- Brigham and Women’s Hospital, USA T Ruderman --- , Malawi C Trujillo --- Brigham and Women’s Hospital, USA

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564. 

     Impact of agricultural land-use on functional feeding groups of Afrotropical Ephemeroptera, Plecoptera and Trichoptera in the Kat River, Eastern Cape, South Africa

     Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Frank Chukwuzuoke Akamagwuna --- Rhodes University, South Africa Oghenekaro Nelson Odume --- Institute for Water Research, Rhodes University, South Africa Nicole Bertine Richoux --- Rhodes University, South Africa

     Despite Africa experiencing a substantial rise in inadequately managed agricultural practices, studies examining the effects of these activities on the functional organisation of macroinvertebrates in tropical streams are underdeveloped. The responses of Ephemeroptera, Plecoptera and Trichoptera (EPTs) functional feeding groups...

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565. 

     Advancements in double-stranded RNA (dsRNA) technology for effective management of forest insect pests

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tanmaya Kumar Bhoi --- ICFRE-Arid Forest Research Institute (ICFRE-AFRI), India Ipsita Samal --- ICAR-National Research Centre on Litchi, India Deepak Kumar Mahanta --- Indian Council of Forestry Research and Education–Forest Research Institute (ICFRE-FRI), India J Komal --- Basic Seed Multiplication and Training Centre, India PV Dinesh Kumar --- Research Extension Centre, India HR Desai --- Navsari Agricultural University, India Mohammad Abbas Ahmad --- Dr. Rajendra Prasad Central Agricultural University, India R Athulya --- ICFRE-Institute of Wood Science and Technology (ICFRE-IWST), India

     The emergence of forest insects as a result of climatic changes presents traditional management strategies with significant challenges. RNA interference (RNAi) has attracted attention as a possible innovative forest conservation strategy. By eliciting gene silencing with double-stranded RNA (dsRNA), RNAi...

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566. 

     Modification of the Aegilops neglecta - common wheat Lr62/Yr42 translocation through allosyndetic pairing induction

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.F. Marais --- Department of Genetics, University of Stellenbosch, Private Bag X1, South Africa A.S. Marais --- Department of Genetics, University of Stellenbosch, Private Bag X1, South Africa A. Eksteen --- Department of Genetics, University of Stellenbosch, Private Bag X1, South Africa Z.A. Pretorius --- Department of Plant Sciences, University of the Free State, South Africa

     The Lr62/Yr42 translocation comprises mostly alien chromatin and retains only the very distal end of wheat chromosome arm 6AL, including the telomere. The large amount of foreign chromatin prohibits commercial use of the resistance and an attempt was therefore made...

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567. 

     The influence of row width, planting density and cultivars on seedling establishment of no-till spring wheat (Triticum aestivum L.) in Western Cape, South Africa

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.P.C. Tolmay --- ARC-Small Grain Institute, South Africa G.A. Agenbag --- Department of Agronomy, University of Stellenbosch, South Africa M.B. Hardy --- Institute for Plant Production, Department of Agriculture: Western Cape, South Africa

     Low rainfall during the wheat growing season in Mediterranean climates leads to variation in growth period and this may constrain yield. Low seedling survival is among the factors that can limit yield in the Western Cape. Seedling survival rates of...

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568. 

     Two new algebraic structures more general than weak rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Teng Zhang --- Zhejiang University of Science and Technology, China

     In 1994, Bergelson and Hindman established a remarkable result for IP* sets: for any IP* set A and any sequence l in ℕ, there exists a sum subsystem l′ of l such that all finite sums and finite products of...

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569. 

     On graded-nonnil-Noetherian commutative rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Anass Assarrar --- University S.M. Ben Abdellah Fez, Morocco Najib Mahdou --- University S.M. Ben Abdellah Fez, Morocco

     Our present work is motivated by several papers which have introduced and studied the notion of nonnil-Noetherian rings. Let A = ⊕ α ∈G A α be a commutative ring with unity graded by an arbitrary commutative monoid G...

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570. 

     On z-ideals and z-closure operations of semirings, I

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Amartya Goswami --- University of Johannesburg, South Africa

     The aim of this series of papers is to study z-ideals of semirings. In this article, we introduce some distinguished classes of z-ideals of semirings, which include z-prime, z-semiprime, z-irreducible, and z-strongly irreducible ideals and study some of their properties...

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571. 

     Distance dominator packing coloring of type II

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jasmina Ferme --- University of Maribor, Slovenia Daša Mesarič Štesl --- University of Ljubljana, Slovenia

     In 2021, we introduced one type of the generalization of dominator coloring via packing coloring and distance domination. In this paper, we present a second type of such generalization, namely distance dominator packing coloring of type II, defined as follows...

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572. 

     On a variant of extremal disconnectedness in locales and spaces

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba Dube --- University of South Africa, South Africa Ali Taherifar --- Yasouj University, Iran

     We study a variant of extremal disconnectedness in frames, defined by requiring that any two disjoint open sublocales should be separable by disjoint open sublocales each of which is the interior of some zero-sublocale. In spaces, this notion was recently...

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573. 

     Corporate social responsibility and firm performance: Evidence from Korea

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Wonhee You --- Sungkyunkwan University, Korea Jens Müller-Merbach --- , Germany Doojin Ryu --- Sungkyunkwan University, Korea

     This study explores the relationship between corporate social responsibility (CSR) and corporate financial performance (CFP) in listed Korean companies over ten years. The results show a significant positive effect of CSR on CFP in the manufacturing sector, but no notable...

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574. 

     Rings whose indecomposable modules are pure-projective or pure-injective

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: François Couchot --- Normandie Univ, France

     Let be the class of rings for which every indecomposable right module is pure-projective or pure-injective. When R is a Noetherian local commutative ring of maximal ideal P, it is proven that R ∈ if and only if R is...

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575. 

     Barriers to Lean Manufacturing implementation for micro industries in Tanzania: Structural equation modelling (sem)

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Juma Matindana --- University of Dar es Salaam, Tanzania Francis Sinkamba --- Tanzania Institute of Accountancy, Tanzania Mussa Mgwatu --- University of Dar es Salaam, Tanzania

     The study aims to identify barriers and examine their relationships in implementing Lean Manufacturing (LM) for micro industries in Tanzania. Using a survey design and purposive sampling, data was collected from 96 respondents through questionnaires. Descriptive statistics, Partial Least Squares...

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576. 

     Banaschewski compactifications via special rings of functions in the absence of the Axiom of Choice

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alireza Olfati --- Yasouj University, Iran Eliza Wajch --- University of Siedlce, Poland

     For a topological space is the ring of all continuous real functions f on X such that, for every real number ϵ > 0, there exists a countable clopen cover of X such that the oscillation of f on each...

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577. 

     Breeding dynamics and threats identified at a small colony of Critically Endangered Rüppell’s Vultures Gyps rueppellii in a Ugandan Forest Reserve

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ivan Oruka --- Gulu University, Uganda Geoffrey M Malinga --- Gulu University, Uganda Stonewall S Kato --- Gulu University, Uganda Darcy Ogada --- , United States of America Derek Pomeroy --- Makerere University, Uganda

     The Critically Endangered Rüppell’s Vulture Gyps rueppelli is a resident species in Uganda, with only one known breeding site in Luku Central Forest Reserve, Arua district. The natural resources in this protected forest reserve are under severe threat due to...

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578. 

     Impact of land use changes on soil physical quality in southeastern Tigray, Ethiopia

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Araya Kahsay --- Adigrat University, Ethiopia Mitiku Haile --- Mekelle University, Ethiopia Girmay Gebresamuel --- Mekelle University, Ethiopia Muktar Mohammed --- Oda-Bultum University, Ethiopia

     This study evaluates the effects of land use changes on soil physical quality in southeastern Tigray, northern Ethiopia, using the visual evaluation of soil structure (VESS) method. Soil samples were collected from cropland, grassland, and shrubland sites during two field...

     View item »
579. 

     Case report: nutritional management of a repaired congenital diaphragmatic hernia

     Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: S Greyvenstein --- North-West University, South Africa RC Dolman-Macleod --- North-West University, South Africa

     Congenital diaphragmatic hernia (CDH) is a rare diaphragm malformation that historically had low survival rates, but advances in care have improved outcomes. This case study discusses the outpatient management of an 8-month-old male infant who survived CDH but, due to...

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580. 

     Partially ordered rings with negative squares

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nhi Durtschi --- University of Houston-Clear Lake, USA Jingjing Ma --- University of Houston-Clear Lake, USA R.H. Redfield --- Hamilton College, USA

     A partially ordered ring (R, ≤) with negative squares is a partially ordered ring in which for some element a ∈ R, a 2 < 0. In this paper, we study this class of partially ordered rings. It is shown...

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581. 

     Enablers to the adoption of sustainable practices in automotive manufacturing: interpretive structural modelling driven by multi-company perspective

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Pallawi Baldeo Sangode --- N. L. Dalmia Institute of Management Studies and Research, India

     In mounting global environmental concerns, firms orient their operations, from supplier selection to product distribution to sustainable models. The pressure of environmental sustainability is more felt by heavy industries that have a high dependence on natural resources for energy generation,...

     View item »
582. 

     Using a low-cost drone to assess herbaceous biomass and quality in the Sahelian Rangeland ecosystems

     Item type: Journal Article • Journal: African Journal of Range &amp; Forage Science • Authors: Haftay Hailu Gebremedhin --- College of Agriculture and Environmental Sciences, Haramaya University, Ethiopia Paulo Salgado --- P&ocirc;le Pastoralisme et Zones S&egrave;ches, P&ocirc;le de recherche de Hann, Senegal Cof&eacute;las Fassinou --- P&ocirc;le Pastoralisme et Zones S&egrave;ches, P&ocirc;le de recherche de Hann, Senegal Simon Taugourdeau --- P&ocirc;le Pastoralisme et Zones S&egrave;ches, P&ocirc;le de recherche de Hann, Senegal

     Existing ways of assessing rangeland plant biomass and nutritional quality mostly rely on field surveys, which are difficult to generalise across plots, along with laboratory-based techniques that entail lengthy pre-processing procedures. As a solution, drones have emerged as a promising...

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583. 

     On the sum of annihilators in nearrings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nastaran Naseripour --- Shahrood University of Technology, Iran Ebrahim Hashemi --- Shahrood University of Technology, Iran Mahsa Paykanian --- Shahrood University of Technology, Iran

     A ring is termed a left IN-ring if the right annihilator of the intersection of any two left ideals is equal to the sum of their right annihilators. As a generalization of left IN-ring, a ring is called a right...

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584. 

     On S-Injective Modules

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Driss Bennis --- Faculty of Sciences, Mohammed V University in Rabat, Morocco Ayoub Bouziri --- Faculty of Sciences, Mohammed V University in Rabat, Morocco

     Let R be a commutative ring with identity, and let S be a multiplicative subset of R. In this paper, we introduce the notion of S-injective modules as a weak version of injective modules. Among other results, we provide an...

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585. 

     Further remarks on z-ideals of semirings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Amartya Goswami --- University of Johannesburg, South Africa Ahmed Maatallah --- University of Monastir, Faculty of Sciences of Monastir, Research Laboratory on Algebra, Tunisia

     In this note, we revisit certain results from a previous work of the first author concerning z-ideals of semirings. We demonstrate that the assumption of the semiring being a bzi-semiring can be dispensed with. Additionally, we propose a revised definition...

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586. 

     On SV_c -Spaces

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Amir Veisi --- Yasouj University, Iran Zahra Keshtkar --- Yasouj University, Iran

     We say that a topological space X is an SVc-space if Cc (X) is an SV - ring, that is, is a valuation ring for every prime ideal P of Cc (X). The purpose of this paper is to study...

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587. 

     Assessing the systemic risk in Rwandan banking sector using clustering approach

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Patrick Mugenzi --- University of Rwanda, Rwanda Annie Uwimana --- University of Rwanda, Rwanda

     This article assessed the dynamics of homogeneity (similarities) among banks in Rwanda from 2017 to 2021 by utilizing agglomerative clustering techniques on a detailed breakdown of the banking system’s balance sheet structure. Specifically, we analyzed homogeneity in the banks’ portfolios,...

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588. 

     Effects of diamond mining on sandy beaches in southern Namibia – the use of Tylos granulatus (Isopoda: Oniscidea) as an indicator species

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Hutchings --- , South Africa A Rees --- , South Africa A Pulfrich --- , South Africa BM Clark --- , South Africa

     Sandy beaches provide vital ecosystem services and support diverse ecological communities but are increasingly threatened by anthropogenic pressures. In particular, intertidal mining disrupts sandy beaches and challenges their resilience, yet these ecosystems retain some capacity for environmental recovery. This study...

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589. 

     Comparing seismic survey mitigation regulations: lessons for South Africa from international frameworks

     Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Purdon --- Tshwane University of Technology, South Africa MJ Somers --- University of Pretoria, South Africa FW Shabangu --- University of Pretoria, South Africa Y Doh --- , France J Scheun --- Tshwane University of Technology, South Africa

     Underwater seismic surveys generate high-intensity, low-frequency noise that can negatively affect a range of marine fauna. As a result, countries have implemented mitigation regulations to reduce the potential impacts of this activity. This study examines seismic survey mitigation regulations from...

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590. 

     The underground cat: burrow use by female black-footed cats (Felis nigripes)

     Item type: Journal Article • Journal: African Zoology • Authors: Harold Brindley --- University of Cape Town, South Africa M Justin O&rsquo;Riain --- University of Cape Town, South Africa Alexander Sliwa --- , Germany

     The black-footed cat (Felis nigripes) is the smallest and one of the rarest cats in Africa. Endemic to the semi-arid regions of South Africa, Namibia and Botswana, this nocturnal carnivore spends daytime in burrows, thus avoiding high temperatures and diurnal...

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591. 

     Too cold to sing: Warbler dawn chorus affected by environmental factors in a high-elevation wetland

     Item type: Journal Article • Journal: African Zoology • Authors: Toka Mosikidi --- University of the Free State, South Africa Nicholas R Friedman --- Leibniz Institute for the Study of Biodiversity Change, Germany Nicholas Le Maitre --- University of the Free State, South Africa Sandy-Lynn Steenhuisen --- University of the Free State, South Africa Vincent Ralph Clark --- University of the Free State, South Africa Kyle John Lloyd --- University of the Free State, South Africa Aliza le Roux --- University of the Free State, South Africa

     Many bird species take part in a dawn chorus, the phenomenon in which the community of songbirds in a particular habitat, show a peak of vocal activity around dawn. Understanding the species-specific extrinsic factors affecting this intensive singing activity is...

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592. 

     Surveys of Sooty Falcons Falco concolor wintering in Madagascar in 2023 and 2024

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Gilbert Razafimanjato --- , Madagascar Michael J McGrady --- International Avian Research, Austria Radoniaina Razafiherison --- , Madagascar Heritiana J Randriamanantena --- , Madagascar Marius PH Rakotondratsima --- , Madagascar Id&eacute;aly J Dinafitiavana --- , Madagascar Russell Thorstrom --- World Center for Birds of Prey, United States Lily-Arison Rene de Roland --- , Madagascar

     Madagascar is the non-breeding-season destination for a significant proportion of the global population of the migratory and Vulnerable Sooty Falcon Falco concolor. Here, we report on surveys of wintering birds in Madagascar, conducted in 2023 and 2024 over a total...

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593. 

     Assessing technological capability of innovative stress detection tools in forestry for the improvement of commercial production: a South African perspective

     Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Regardt Ferreira --- School of Natural Resource Management, South Africa Kabir Peerbhay --- Sappi Shaw Research Centre, South Africa Josua Louw --- School of Natural Resource Management, South Africa Ilaria Germishuizen --- Institute for Commercial Forestry Research, South Africa Naeem Agjee --- Sappi Shaw Research Centre, South Africa Mikka Parag --- University of KwaZulu-Natal, South Africa

     There is a constant need for efficient screening methods of plant physiological stress in nursery and plantation forestry systems. Most stress is assessed visually, which can be subjective and requires manpower that is time-consuming and expensive. However, as technology has...

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594. 

     A reduced-parameter predator–prey model of soil formation from bedrock and biomass

     Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Animesh Samanta --- The Neotia University, India Priyanka Mandal --- The Neotia University, India Ayan Chatterjee --- The Neotia University, India

     Soil–bedrock interaction on hillslopes is not well-studied, though it's affected by many physical and chemical factors. The aim of the present mathematical modelling study is to construct a model for soil formation utilising ordinary differential equations, all while reducing the...

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595. 

     Are analyst forecasts more value relevant than reported earnings? Evidence from seasoned equity offerings

     Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Jingwen GE --- ESSCA School of Management, France Hassan Raza Kazmi --- , France

     Using the Vuong test, we compare the value-relevance of analyst forecasts with that of reported earnings around Seasoned Equity Offerings (SEOs), where upward earnings management is common. Using a sample of 1,683 SEOs from 2000–2016 by 1,125 European firms, we...

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596. 

     Monitoring survival probabilities of Cape Vultures Gyps coprotheres in South Africa, using GPS tracking data

     Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sophie Pulcella --- Knowsley Safari, Prescot, United Kingdom Kerri Wolter --- Vulpro NPC, South Africa Juliana Pinto --- Vulpro NPC, South Africa Brian Kuhn --- Vulpro NPC, South Africa Wolfgang Fiedler --- Max Planck Institute of Animal Behaviour, Germany

     The Cape Vulture Gyps coprotheres is a species of Old-World vulture endemic to southern Africa. Currently listed as ‘Vulnerable’ by the IUCN, they face increasing threats from anthropogenic hazards, such as collisions with man-made infrastructure and poisoning events, leading to...

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597. 

     On quotient rings of pointfree function rings

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Batsile Tlharesakgosi --- University of South Africa, South Africa Sharon Nyokabi Wamugunda --- University of South Africa, South Africa

     Let L be a completely regular frame. Associated with each I ∈ βL are two ideals, MI and OI , of the ring of real-valued continuous functions on a frame L. In this paper, we describe the intersection of all...

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598. 

     Knowledge sharing, innovation capability, and organizational performance in emerging markets: Empirical evidence from SMEs in Ghana

     Item type: Journal Article • Journal: Africa Journal of Management • Authors: Asiamah Yeboah --- Kumasi Technical University, Ghana

     Despite its importance, knowledge sharing as a driver of organizational performance in small and medium-sized enterprises (SMEs) within emerging markets has received limited scholarly attention. Grounded in the resource-based view and knowledge-based view of the firm, this study investigates the...

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599. 

     Sustainable development outcomes of tech-based industrialization in emerging markets

     Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Germain Stephane Ketchoua --- University of Johannesburg, South Africa Muhamadu Awal Kindzeka Wirajing --- University of Dschang, Cameroon Jean-Claude Mousseuknadji Kouladoum --- University of N&rsquo;Djamena, Chad

     Industrialization is vital for economic growth, producing goods using technology, skilled labour, and efficient processes, driving innovation and employment. This study scrutinizes government spending and financial inclusion on the relationship between tech-intensive manufacturing value added and sustainable development in emerging...

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600. 

     Some scattering and spectral properties of eigenparameter dependent quantum difference equations with matrix value impulsive conditions

     Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: G&uuml;her G&uuml;l&ccedil;ehre &Ouml;zbey --- Middle East Technical University, &Uuml;niversiteler Mahallesi, Turkey Yelda Aygar --- Ankara University, Turkey

     In this study, we present a problem which consists quantum difference equation with matrix value impulsive conditions and eigenparameter dependent boundary condition. Our examination is based on the concept of main spectral and scattering properties of this problem. We introduce...

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