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Financial Decision Criteria and Real Price Changes
Item type: Journal Article • Journal: South African Forestry Journal • Authors: H. J.E. Uys --- Department of Forest Science,General price indices such as the Consumer Price Index (CPI) or the Production Price Index (PPI) represent the weighted average of prices of a large number of goods and services. Such price indices therefore cannot accurately measure the changes in... -
Determination of the Long-term Profitability of Forestry Projects
Item type: Journal Article • Journal: South African Forestry Journal • Authors: H.J.E Uys --- Department of Forest Science, J.H. Nel --- Department of Water Affairs and Forestry,A planned forestry project which appears to be profitable for one rotation will not necessarily be profitable in the long term. It can change to an unprofitable project after a number of profitable rotations. Sustained profitability will depend on the... -
The Use of Roots to Test N, P and K Deficiencies in Eucalyptus Nutrition
Item type: Journal Article • Journal: South African Forestry Journal • Authors: John Dighton --- , HelenE. Jones --- ,Bioassays have been developed which can provide diagnostics of the nutritional status of trees. They measure the flux of N, P or Rb for K into roots from standard solutions where the rate of influx is inversely related to nutrient... -
Chemical Evaluation of Leaf Fibre Residues from Tropical Tree Legumes—a Wealth in Social Perspective
Item type: Journal Article • Journal: South African Forestry Journal • Authors: Sunanda Chanda --- Biological Sciences Division, India S.K. Bhaduri --- Department of Chemistry and Microbiology, Jute Technological Research Laboratories, India Sharmistha Das --- Biological Sciences Division, India D. Sardar --- Department of Chemistry and Microbiology, Jute Technological Research Laboratories, IndiaLeaf fibre residues obtained as a by-product during bulk extraction of leaf protein meal from three tropical forest trees viz. Albizzia procera Benth., Dalbergia sisso Roxb. and Delonix regia Raf. were analysed for their chemical and mineral composition. The fibres... -
Towards a method of assessing the veld condition of the valley bushveld in the Eastern Cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G C Stuart‐Hill --- Department of Agriculture and Water Supply (Eastern Cape Region), A J Aucamp --- Department of Agriculture and Water Supply (Eastern Cape Region), C J G Le Roux --- Department of Agriculture and Water Supply (Eastern Cape Region), W R Teague --- Department of Agriculture and Water Supply (Eastern Cape Region),Currently, no technique is available for assessing the condition of Valley Bushveld in the Eastern Cape. The objective of this investigation was to develop a method of scoring bushveld according to its productive condition. It was established, through principal component... -
Die produksie van smutsvingergras in die wes‐transvaal1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.S. Dannhauser --- Departement Landbou en Watervoorsiening, W.L.J. van Rensburg --- , D.P.J. Opperman --- , P.J. Vanrooyen --- ,Die produksie van Smutsvingergras (Digitaria eriantha) is in yerskeie proewe in die Hoëveldstreek, op Potchefstroom, in die verlede bepaal. Hierdie proewe is oor ‘n lang periode op verskillende grondsoorte en met verskillende bemestingspeile uitge‐voer. Alle resultate is saamgevoeg en met... -
A gradient analysis of grassed mountain catchments in the natal Drakensberg
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: R.S. Walker --- Department of Environment Affairs,An indirect gradient analysis was carried out on vegetation and environmental data from the Mdedelelo Wilderness Area of Cathedral Peak State Forest in Highland Sourveld. Vegetation ordination axes were correlated with environmental variables deduced to have influenced species‐composition. Altitude proved... -
Die invloed van brand en maai op onbeweide langgrasveld in Natal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.J.G. leRoux --- Departcment Landbou, Republiek van Suid‐AfrikaThe effect of burning and mowing on ungrazed tall grassveld of Natal. The trial was conducted on the Estcourt Research Station to show the effect of 14 burning and mowing treatments without grazing in the tall grassveld of Natal. The... -
Evaluation of three techniques for measuring grass leaf area1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: C.W. Daphne --- Department of Grassland Science, Republic of South Africa P.J.K. Zacharias --- Department of Grassland Science, Republic of South Africa A.C. Hansen --- Department of Agricultural Engineering, Republic of South AfricaThree leaf area measuring techniques were compared. Although statistical considerations received priority, practical issues such as economy of time, labour and finance, were also evaluated. The electronic light interception planimeter and the squared grid method (SGM) are already in common... -
A multivariate approach to the response of lucerne plants to varying soil conditions in pots
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G.R. Barnes --- Department of Agricultural Development, Republic of South AfricaFive levels of lime, five levels of P and a constant level of K were applied to soil in pots to create a range of soil conditions. Factor analysis was used to relate a number of soil test variables to... -
Relations between woody and herbaceous components and the effects of bush‐clearing in southern African savannas
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: W.R. Teague --- , Republic of South Africa G.N. Smit --- , Republic of South AfricaThe relations between woody and herbaceous plants in southern African savannas are reviewed in the context of pastoral use. Current knowledge is summarized, important gaps are indicated and research priorities are suggested. Although all savannas consist of a grass and... -
Veld compositional response to fertilization in the tall grassveld of Natal
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: N.P. le Roux --- , M.T. Mentis --- Department of Botany,The plant species compositional response of veld at Ukulinga to application, over 30 years, of nitrogen, phosphate and lime is reported. Two types of nitrogen fertilizer were applied at four levels with and without phosphate, lime and lime + phosphate... -
Die invloed van plantdatum op die groei en ontwikkeling van grondbone (Arachis hypogaea L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.J. van Rooyen --- Direktoraat Bio- en Datametriese Dienste, Republiek van Suid-Afrika C.J. Swanevelder --- , Republiek van Suid-AfrikaGrondbone wat vir drie seisoene op drie plantdatums, nl. die laaste week van Oktober, middel November en die eerste week van Desember geplant is, het laer opbrengste gelewer namate later geplant is. Groei-analisedata is weekliks geneem op blare, stamme, peule... -
Risk analysis of wheat production in the central Orange Free State using a growth model
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Singels --- Department of Agrometeorology, Republic of South Africa J.M. de Jager --- Department of Agrometeorology, Republic of South AfricaA wheat crop growth model (Singels, 1983) was refined and used to calculate annual grain yield from weather data for 45 seasons in the Bloemfontein area. Five different levels of profile-available water capacity were used as soil input parameter. Other... -
Spatial pattern and variability of soils in a granite landscape, north-east of Nelspruit
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Verster --- Department of Geography, Republic of South AfricaMorphological and selected chemical and granulometric properties of eleven soil profiles occurring on five hillslope sites (midslope, upper footslope, mid-footslope, lower footslope and valley bottom) were determined in order to evaluate the spatial pattern and variability of soils in a... -
Economical manual estimation of ammonium, nitrate and total inorganic nitrogen in soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.H. Wiltshire --- Department of Soil Science, Republic of South Africa D.J. Laubscher --- Department of Soil Science, Republic of South AfricaColorimetrie methods for measurement of ammonium, nitrite and nitrate were modified (a) for application to small samples of nitrogen-poor soils, (b) by centrifugation of extracts to avoid contamination from filter papers and (c) to economize on apparatus and reagents. Estimates... -
Recommended modifications to the spectrophotometric determination of molybdenum as Fe[MoO(SCN)5]
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. Bessinger --- , Republic of South AfricaThe classical method for the determination of molybdenum in plant material by the formation of an iron-molybdenum- thiocyanate complex, which is extracted with alcohols, ethers and carbon tetrachloride from a dilute acid solution, is basically very suitable for the detection... -
Spatial pattern and variability of soil and hillslope properties in a granitic landscape 1. Pretoriuskop area
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.C. Munnik --- Department of Geography, Republic of South Africa E. Verster --- Department of Geography, Republic of South Africa T.H. van Rooyen --- Department of Geography, Republic of South AfricaCharacteristics of nine hillslope profiles and selected properties of 69 soil profiles were determined in order to evaluate the spatial pattern and variability of soil and hillslope properties in a granitic area near Pretoriuskop, Kruger National Park. A transect design... -
Application of the calcium-calcichrome colour reaction to the spectrophotometric determination of calcium in plant material
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Xing-Chu Qiu --- , People's Republic of China Ying-Quan Zhu --- , People's Republic of ChinaA highly selective spectrophotometric method has been developed for the determination of micro-amounts of calcium in plant material with calcichrome as the colour reagent. The absorption maximum of the complex is at 520 nm. At this wavelength, Beer's law is... -
A multivariate approach to a specific problem of grouping maize cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MarieF. Smith --- , Republic of South AfricaThe use of multivariate techniques in the analysis of multivariate problems is illustrated by comparing the results of univariate and multivariate techniques applied to the problem of establishing the nutritional requirements of, and the acid tolerance differences between maize cultivars... -
Inhibering van urease-aktiwiteite in sekere gronde van die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. P.J. Thormählen --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. den Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie verloop van hidrolise is in vier gronde met verskillende urease-aktiwiteite, afkomstig van die sentrale besproeiingsgebiede, gemonitor na toediening van ureum teen die ekwivalent van 100 kg N ha−1. Gelyktydig met die toediening van ureum is sewe belowende inhibeerders ook... -
Spatial pattern and variability of soil and hillslope properties in a granitic landscape 2. Pretoria—Johannesburg area
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.C. Munnik --- Department of Geography, Republic of South Africa E. Versterand --- Department of Geography, Republic of South Africa T.H. van Rooyen --- Department of Geography, Republic of South AfricaUsing a transect design, a detailed examination was made of nine hillslopes and 64 soil profiles in the granitic area between Johannesburg and Pretoria to assess the spatial pattern and variability of soil and hillslope properties. The land surface was... -
Effek van ureumkonsentrasies op die urease-aktiwiteite in gronde van die sentrale besproeiingsgebiede in Suid-Afrika
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: F. P.J. Thormählen --- Departement van Grondkunde, Republiek van Suid-Afrika C.C. du Preez --- Departement van Grondkunde, Republiek van Suid-AfrikaDie oogmerk met die studie was om vas te stel by watter ureumkonsentrasies die urease In die besproeide gronde versadlg of geinhibeer word. Die verloop van hldrolise is In ses gronde met verskillende urease-aktiwi- teite gemonitor na toediening van ureum... -
An automated colorimetric method for the determination of dicyandiamide in 1.0 M KCI soil extracts
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.C. Pretorius --- , Republic of South Africa J.F. van Staden --- Department of Chemistry, Republic of South Africa A. D.P. Botha --- , Republic of South Africa C. Kolver --- , Republic of South AfricaThe nitrification inhibitor dicyandiamide (cyanoguanidine, didin or DCD) reacts with 1-naphthol and diacetyl to form a red complex which measures spectrophotometrically at 540 nm. An automated analytical procedure was developed to determine DCD in soils extracted with 1.0 M KCI... -
Genetic analyses of grey leaf spot infection of maize in a single location 12 × 12 diallel
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: T. Hohls --- Department of Genetics, Republic of South Africa P.E. Shanahan --- Department of Genetics, Republic of South Africa G. P.Y. Clarke --- Department of Statistics and Biometry, Republic of South Africa H.O. Gevers --- , Republic of South AfricaThe inheritance of resistance to grey leaf spot of maize (Zea mays L.), caused by Cercospora zeae-maydis, was studied using a 12 × 12 diallel cross. Information on the heterotic performance of the inbred lines enabled identification of patterns of... -
Multivariate assessment of environmental effects on hard red winter wheat. I. Principal-components analysis of yield and bread-making characteristics
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D. van Lili --- Small Grain Centre, Republic of South Africa J.L. Purchase --- Small Grain Centre, Republic of South Africa MarieF. Smith --- , Republic of South Africa G.A. Agenbag --- Department of Agronomy and Pastures, Republic of South Africa O.T. de Villiers --- Department of Agronomy and Pastures, Republic of South AfricaThe attributes of yield and bread-making quality of winter wheats produced in the Free State are subject to environmental effects. The result is a supply to the baking industry of flour of inconsistent quality, which in turn is detrimental to... -
Spatial pattern and variability of soil and hillslope properties in a granitic landscape. 3. Phalaborwa area
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.C. Munnik --- Department of Geography, Republic of South Africa E. Verster --- Department of Geography, Republic of South Africa T.H. van Rooyen --- Department of Geography, Republic of South AfricaA pedogeomorphic study was made of the area immediately east of Phalaborwa underlain by granitic materials. Fifty-five soil profiles from nine transects were examined in detail to determine, among other things, the spatial variability of the soils and the hillslope... -
Genotype × environment interaction of winter wheat (Triticum aestivum L.) in South Africa: II. Stability analysis of yield performance
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.L. Purchase --- , Republic of South Africa Hesta Hatting --- , Republic of South Africa C.S. van Deventer --- Department of Plant Breeding, Republic of South AfricaThirteen winter and intermediate type bread wheat cultivars were evaluated for yield stability under dryland conditions over a four year period from 1991 to 1994 and over a total of 120 environments in the Western, Central and Eastern Free State... -
Responses of Ethiopian durum wheat (Triticum turgidum var durum L.) genotypes to drought stress
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.F. Solomon --- Departments of Plant Sciences, South Africa M.T. Labuschagne --- Departments of Plant Sciences, South Africa A. T.P. Bennie --- Departments of Soil, Crop and Climate Sciences, South AfricaThe aim of this study was to identify yield components associated with drought tolerance in durum wheat. Twenty six durum wheat genotypes, from different agro-ecologies of Ethiopia were evaluated under moisture stress and non-stress conditions (35% and 70% available soil... -
Stability analysis of grain yield of tef (Eragrostis tef) using the mixed model approach
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.D. Kassa --- Discipline of Statistics & Operations Research, Republic of South Africa MarieF. Smith --- Biometry Unit, Republic of South Africa H. Fufa --- , EthiopiaMulti-environment trials are usually used to assess the grain yield stability of genotypes. Most of the common stability measures such as Finlay and Wilkinson (1963), Eberhart and Russell (1966) and Shukla (1972), can be accommodated by a linear mixed model... -
Estimates of combining ability for agronomic traits in pepper (Capsicum annuum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.F. Geleta --- Department of Plant Sciences, South Africa M.T. Labuschagne --- Department of Plant Sciences, South AfricaTwenty-one F1 hybrids were obtained from non-reciprocal crosses among seven genetically diverse pepper genotypes. The parents and F1 (S were evaluated for combining ability and the relative importance of additive and non-additive gene action. The plants were grown in a... -
Associations of yield and yield components among selected durum wheats (Triticum turgidum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.A. Shimelis --- , South AfricaAssociations of seed yield (SY) and important agronomic traits were studied among selected durum wheats (Triticum turgidum L.) to establish the relationship and pinpoint the best selection criteria. Controlled glasshouse studies were conducted over two years (2002–2003) using 14 diverse... -
Using canonical variate analysis to group small white bean cultivars canned in tomato sauce according to their canning quality
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , Republic of South Africa G. Osthoff --- Department of Microbial, Biochemical and Food Technology, South Africa A.J. Pretorius --- , Republic of South AfricaA laboratory-scale canning and evaluation method was employed to evaluate the canning quality of small white beans over cultivars, localities and seasons. Four small white bean cultivars, representing 15 localities from the 2001/02 season and six cultivars representing 17 localities... -
A canning quality model for small white bean lines selected for breeding (Phaseolus vulgaris L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. van der Merwe --- , South Africa G. Osthoff --- Department of Microbial, 9300 South Africa A.J. Pretorius --- , South AfricaThe study aimed to validate canonical variate analysis (CVA) model equations for the grouping of small white beans according to canning quality by testing them on four cultivar samples of known canning quality (2000/01 season), and 24 breeding samples that... -
Long-term kinetics of phosphate desorption from soil and its relationship with plant growth
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.M. Taddesse --- , Republic of South Africa A.S. Claassens --- , Republic of South Africa P.C. de Jager --- , Republic of South AfricaKnowledge on the availability of residual P in soils is of great importance for fertilization management. The use of dialysis membrane tubes filled with hydrous ferric oxide solution has recently been reported as an effective way to characterize P desorption... -
Multivariate analysis of selected allied chemical properties of soils close to an abandoned manganese mine
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G. E. Ekosse --- , South Africa P. S. Fouche --- , South AfricaThis study aimed at understanding the statistical relationships between base saturation percent (BSP), cation exchange capacity (CEC), pH(water) and electrical conductivity (EC) in soils within close proximity to the abandoned Kgwakgwe Mn oxide ore mine, Botswana. Four hundred soil samples... -
Image analysis to quantify herbicide efficacy for Cynodon dactylon control
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.L. Campbell --- , Republic of South Africa M.T. Smith --- , Republic of South Africa C. Sewpersad --- , Republic of South Africa M. van den Berg --- , Republic of South AfricaStudies on the effectiveness of herbicides for control of Cynodon dactylon (L.) Pers. (cynodon) normally rely on visual recording methods, which are rapid and convenient, but lack objectiveness and reproducibility. To address this problem, a computer software package was customized... -
Application of Partial Least Squares regression to relate tastiness of boiled potatoes to chemical and physical tests
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marie F. Smith --- , South Africa Christine S. Leighton --- , South Africa Liesl Morey --- , South Africa Hettie C. Schönfeldt --- , South AfricaPartial Least Squares regression (PLS) was used to understand the relationship between 15 sensory attributes of potatoes boiled in their skins as dependent variables (Y), and six objective (chemical and physical) measurements as the independent variables (X). The ARC-Sensory Analysis... -
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 AfricaIn 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... -
Advances in pedology in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.A.L. le Roux --- Department of Soil, Crop and Climate Sciences, M. Hensley --- Department of Soil, Crop and Climate Sciences, C.W. van Huyssteen --- Department of Soil, Crop and Climate Sciences,The ability of soil to serve as a unique buffer of water, organic carbon, nutrients, pH, redox and temperature is recognised in environmental research. A detailed study on hardpan carbonate and dorbank horizons in the commonly occurring ‘heuweltjies’ of the... -
Field evaluation of maize inbred lines for resistance to Exserohilum turcicum
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M. Craven --- , South Africa A.P. Fourie --- , South AfricaNine maize inbred lines with excellent grey leaf spot resistance and good combining ability were evaluated for their reaction to infection by Exserohilum turcicum. The lines were compared to a differential set consisting of Oh43 and B73 (susceptible controls) and... -
Isolation, identification and molecular characterisation of an isolate of Zucchini yellow mosaic virus occurring in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L Usher --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa B Sivparsad --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South Africa A Gubba --- Discipline of Plant Pathology, School of Agriculture, Earth and Environmental Sciences, College of Agriculture and Environmental Sciences, South AfricaZucchini yellow mosaic virus (ZYMV) is an economically important virus infecting cucurbits and has a worldwide distribution. In the Republic of South Africa, ZYMV has been reported as a major limiting factor to cucurbit production. The aim of this study... -
Phytochemical content, antioxidant capacity and physicochemical properties of pomegranate grown in different microclimates in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Asanda Mditshwa --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Faculty of AgriSciences, South Africa OlaniyiA Fawole --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Faculty of AgriSciences, South Africa Fahad Al-Said --- Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultanate of Oman Rashid Al-Yahyai --- Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultanate of Oman UmezuruikeL Opara --- Postharvest Technology Research Laboratory, South African Research Chair in Postharvest Technology, Faculty of AgriSciences, South AfricaWe investigated the antioxidant and physicochemical properties of pomegranate (Punica granatum cv. Bhagwa) fruit grown in three microclimates in South Africa. The physicochemical properties of fruit peel and arils differed among the growing locations, including weight and redness color of... -
Assessment of the monkfish Lophius vomerinus resource off Namibia
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: L. Maartens A. J. BoothThe Lophius vomerinus component of the monkfish resource off Namibia was assessed by means of deterministic length- and age-based models. Steady state length cohort analyses illustrated that, although the model was sensitive to the rate of natural mortality, it was... -
DISTINGUISHING SUB-ENVIRONMENTS OF SEDIMENT DEPOSITION IN RESERVOIRS USING PARTICLE SIZE DISTRIBUTION PARAMETERS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: A van B Weaver --- Department of Water Affairs, South Africa AW Stone --- Department of Water Affairs, South AfricaThe deposition of sediment and the distribution of sediment sizes in impoundments is related to the hydraulic mechanisms of the lacustrine or reservoir environment. Granulometric parameters of sediments can be particularly sensitive indicators of the hydraulic environments occuring in different... -
APPARENT PREDATION OF MICROCYSTIS AERUGINOSA KüTZ. EMEND ELENKIN BY A SAPROSPIRA-LIKE BACTERIUM IN A HYPERTROPHIC LAKE (HARTBEESPOORT DAM, SOUTH AFRICA)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.J. Ashton --- , South Africa R.D. Robarts --- , South AfricaThe cyanobacterium Microcystis aeruginosa is the dominant autotroph in hypertrophic Hartbeespoort Dam, South Africa. Tn early summer (November) of 1983 and 1984 Microcystis colonies were heavily colonized by a gram-negative, spiral-shaped organism whose filaments appeared as si.ngle cells under both... -
THE JOURNAL OF THE LIMNOLOGICAL SOCIETY OF SOUTHERN AFRICA: APPRAISAL, ANALYSIS, APPROACH AND APPLICATION
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.A. Thornton --- City Planner's Department, South AfricaIn accordance with the Silver Jubilee theme of ‘reminisce and assess’, the editorial takes a critical look at the Journal of the Limnological Society of Southern Africa with the objective of examining its raison d'etre. After briefly examining the need... -
Covariance Analysis of Chlorophyll Distribution in the Sundays River Estuary, Eastern Cape
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: T. Hilmer --- Department of Botany, South Africa G.C. Bate --- Department of Botany, South AfricaAn analysis of covariance performed on chlorophyll a distribution data from the Sundays River estuary identified five persistent water masses with significantly different chlorophyll a contents. These corresponded to different hydrodynamic regions within the estuary. The relationship between salinity and... -
ENVIRONMENTAL CORRELATES OF PLANT SPECIES DISTRIBUTION ON THE NYL RIVER FLOODPLAIN
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M. A.S. Coetzee --- Botany Department, South Africa K.H. Rogers --- Botany Department, South AfricaThe envisaged construction of a dam on a major tributary of the Nyl River will alter the hydrological regime with consequent effects on the structure and functioning of the downstream floodplain ecosystem (Nylsvley). Attempts to minimise this impact will be... -
THE BENTHIC MACROINVERTEBRATE FAUNA OF A SOUTH AFRICAN MOUNTAIN STREAM AND ITS RESPONSE TO FIRE
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: D.L. Britton --- Freshwater Research Unit, Zoology Department, South AfricaThe effects of a late-summer prescribed burn on the temperature and benthic macroinvertebrate fauna of a south-western Cape mountain stream were investigated over a period of 12 months. Temperature and discharge regimes appear well-defined and relatively predictable from year to... -
SOME ASPECTS OF THE ECOLOGY OF THE FRESHWATER CRAB (POTAMONAUTES PERLATUS MILNE EDWARDS) IN THE UPPER REACHES OF THE BUFFALO RIVER, EASTERN CAPE PROVINCE, SOUTH AFRICA.
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: M.P. Hill --- Department of Zoology and Entomology, South Africa J.H. O'Keeffe --- , South AfricaFreshwater crabs (Potamonautes perlatus) are the largest naturally occurring invertebrates in southern African rivers. The ecology of these animals in South African riverine ecosystems is little understood. This study investigates some aspects of the population and feeding ecology of P... -
A COMPARISON OF THE FOOD SOURCES OF STONEFLIES (PLECOPTERA) FROM AN OPEN-AND A CLOSED-CANOPY HEADWATER STREAM IN SOUTH AFRICA USING STABLE-ISOTOPE TECHNIQUES
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E. Reynolds --- , , South Africa C. de Villiers --- , , B. R. Davies --- , , South AfricaThe effects of different local food resources on the diets of some filipalpian stonefly nymphs (Aphanicerca spp.) were investigated. Animals from two headwater reaches, one primarily allochthonously driven and the other an open-canopied autochthonous-based system were compared. However, gut and... -
Effects of season and frequency of burning on soils and landscape functioning in a moist montane grassland
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AD Manson D Jewitt AD ShortThe effects of burning on soil properties and landscape function were investigated in a long-term experiment comparing different burning strategies in a moist montane grassland. Total C, total N, total S, bulk density, plant-available nutrients, and soil acidity were determined... -
Identification of key grass species under grazing in the Highland Sourveld of Natal
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C.R. Hurt --- Department of Grassland Science, Republic of South Africa M.B. Hardy --- , Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaRelative abundances of rangeland species have for many years been used to index trends in range condition following the impact of grazing. All species recorded in a botanical survey are usually classified according to their assumed reaction to grazing using... -
Habitat factors influencing the distribution of Cymbopogon validus in Mkambati game reserve, Transkei
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: SheonaE. Shackleton --- Department of Botany, Republic of South Africa C.M. Shackleton --- Department of Botany, Republic of South AfricaThe factors influencing the distribution of Cymbopogon validus in Mkambati Game Reserve were investigated using multivariate techniques. C. validus was found to be present on nutrient‐rich, clay soils and absent from dystrophic, sandy soils. This could account for the patchy... -
Classification of the grass layer of semi‐arid rangeland in the Smaldeel area of the eastern Cape
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J.C. Martens --- Dept of Agriculture, Republic of South Africa C.D. Morris --- Agricultural Research Council, Republic of South AfricaHierarchical classification based on proportional species composition of the grass layer was used to identify and classify semi‐arid rangeland into range types. The relation between range types produced by the classification and the environmental parameters measured were investigated using a... -
Changes to the vegetation of the mid‐Fish River valley, Eastern Cape, South Africa, in response to land‐use, as revealed by a direct gradient analysis
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N.V. Evans --- Department of Botany, Republic of South Africa A.M. Avis --- Department of Botany, Republic of South Africa A.R. Palmer --- , Republic of South AfricaDegradation of natural rangeland is a serious problem throughout southern Africa. It has been suggested that incorrect grazing management practices have resulted in a decrease in the production potential of rangelands. In order to explore the nature and extent of... -
Topographical units and soil types prove more efficient for vegetation sample site placement than Land Type units in semi-arid savanna, North West province, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Francois Viljoen --- Department of Nature Conservation, South Africa Kerryn Bullock --- Department of Nature Conservation, South Africa Mike Panagos --- Department of Nature Conservation, South Africa Willem Myburgh --- Department of Nature Conservation, South AfricaLand Type mapping units were used to stratify the Heritage Park corridor, in the North West province, South Africa, into eight Land Type units prior to placing 109 floristic sample sites. At each site, species composition and relative frequency data... -
The effect of land-use on the vegetation communities along a topo-moisture gradient in the mid-Fish River valley, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N.V. Birch A.M. Avis A.R. PalmerThe objectives of this study were to identify the major physical environmental variables affecting plant community distribution, and to determine whether a shift occurred in plant community position along an environmental gradient of different land-use practises. To achieve these objectives... -
Provincial road condition and round wood timber transport in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: StephenJ. Nicholls ReinoE. Pulkki PierreA. AckermanThe context of the study is the concern over declining provincial road conditions due to insufficient government funding for road maintenance. The roads are used by a wide variety of commercial and private interests that contribute a broad range of... -
The minimum required yield for profitable sawtimber production from Pin us patula in the escarpment area of Mpumalanga
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: M.P. Falcão --- Faculty of Agronomy and Forestry Engineering, Mozambique H. J.E. Uys --- Department of Forest Science, South AfricaIn a recent study (1998) the minimum required yield for profitable sawtimber production from Pinus patula in the escarpment area of Mpumalanga was established. Net Present Value was used as financial profitability criterion. All cost components were 1996 costs (the... -
An investigation into the occurrence and nature of genotype by environment interaction in Pinus patula
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: C.L. Snedden --- , South Africa S.D. Verryn --- , South AfricaThis study was conducted as part of a joint venture between the tree improvement teams of Safcol and the CSIR to develop a breeding, production and conservation strategy for Pinus patula. -
Lived Experiences of Subclinical Eating Disorder: Female Students' Perceptions
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Doret K. Kirsten --- North-West University, Wynand F. du Plessis --- North-West University,The aim of this study was to obtain an “insiders' perspective” on the lived experience of Subclinical Eating Disorder (SED) in female university students. Participants were 30 white, undergraduate females from the Potchefstroom campus of the North-West University in South... -
Discourse Analysis of the Perceptions of Bereavement and Bereavement rituals of Tshivenda Speaking Women
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Makondelele S. Makatu --- University of Pretoria, Claire Wagner --- University of Pretoria, Ilse Ruane --- University of Pretoria, Gertina J. van Schalkwyk --- University of Macau,This article examined the discourses of bereavement and bereavement rituals that inform Tshivenda speaking women's positions within their social structure. The Tshivenda speaking community that participated in this study is located in the Vhembe District of the Limpopo province in... -
A Comparison of Quality of Life in Haemodialysis and Peritoneal Dialysis Patients
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Priyesh Bipath --- University of Pretoria, Catherine Govender --- University of Pretoria, Margaretha Viljoen --- University of Pretoria,Decreased quality of life of end-stage renal disease is further compromised by renal function replacement treatments such as haemodialysis (HD) and peritoneal dialysis (PD). Poor quality of life negatively affects treatment outcome. This study compared quality of life between HD... -
Relational Psychoanalysis Potential Usefulness with Black South African Clients
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Zelda G. Knight --- University of Johannesburg,The aim of this article is to suggest that relational psychoanalysis may be a useful approach for working with clients from indigenous African cultures. In particular, the article considers the utility of relational psychoanalysis to understanding and enacting the therapeutic... -
Untold Stories of a Group of Black South Africans about the Apartheid Era
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ernst J. van der Merwe --- North-West University (Potchefstroom Campus), South Africa Chris A. Venter --- North-West University (Potchefstroom Campus), South Africa Q. Michael Temane --- North-West University (Potchefstroom Campus), South AfricaThe aim of this research was to explore the alternative stories of a group of black adults who survived the apartheid years in South Africa. It was surmised that the lives of many of the black adults who experienced the... -
The Influence of Television on Adolescent Girls' Sexual Attitudes and Behaviour in a South African Setting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tebogo Moswang --- University of Pretoria, South Africa Ilse Ruane --- University of Pretoria, South AfricaThis study explored how television influences the sexual attitudes and behaviour of adolescent girls in a South African urban setting. A total of 4 adolescent girls participated (average age = 16 years old, range = 15–17 years old). Data was... -
A Group of Black South Africans' Experience of Telling their Untold Stories about the Apartheid Era
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacques Vermeulen --- North-West University, South Africa Chris A. Venter --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Ernst J. van der Merwe --- North-West University, South AfricaThe aim of this research was to explore a group of black South Africans' experiences of telling their untold stories of survival about the apartheid era. The expectation was that if they did become more aware of these alternative stories,... -
Results of a Citation Analysis of the Career Counselling Field from an African Perspective
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Dilek Karahoca --- Near East University, North Cyprus Huseyin Uzunboylu --- Near East University, North CyprusThe study examined research and trends in career counselling published in selected professional sources during the period 1980–2010. Citation analysis was used in this study to investigate documents which were indexed in the Web of Science related to career counselling... -
‘We Do Not Cook, We Only Assist Them’: Constructions of Hegemonic Masculinity Through Gendered Activity
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kopano Ratele --- University of South Africa/Medical Research Council, Tamara Shefer --- University of the Western Cape, Anna Strebel --- Independent Researcher, Elron Fouten --- Rhodes University,This article discusses how the gendering of activity by boys coincides with, contests or recreates constructions of hegemonic masculinity in the context of South Africa. The study used a qualitative methodology including a series of three focus groups with 14–16... -
Male Soldiers' Constructions of Masculinity, Sexuality and Sexual Violence
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nyameka Mankayi --- Human Sciences Research Council (HSRC), South AfricaThis article explores soldiers' constructions of masculinity, sexual practices and gender-based violence, in particular sexual violence towards women. Fourteen male soldiers in the South African National Defence Force between the ages of 23 and 33 years old participated. A discourse... -
‘Bhuti’: Meaning and Masculinities in Xhosa Brothering
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lisa Saville Young --- Rhodes University, South Africa Catherine Jackson --- Rhodes University, South AfricaThe article explores the connections between context, masculinity and the fraternal relationship to understand brotherhood in Xhosa culture. The participant was a Xhosa man (32 years old, with tertiary level education). Data were collected using a semi-structured interview. The data... -
A Qualitative Exploration of Women's Work—Life Balance Over the Life Course: A Case Study of Retail Managers
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shaida Bobat --- University of KwaZulu-Natal, Nosipho Mshololo --- University of KwaZulu-Natal, Shanya Reuben --- University of KwaZulu-Natal,This study examined women's work—life balance (WLB) over the life course in retail management. Ten women (mean age =25) who worked in the centre management of a shopping mall were interviewed. Thematic analysis revealed that they perceived their WLB to... -
The Factor Structure and Reliability of a Six-Item Sense of Coherence Measure
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Antoni Barnard --- University of South Africa, Helene Muller --- University of South Africa,The study investigated the factor structure and reliability of a six-item sense of coherence (SOC) measure. Participants were a South African white collar employee sample (n=7185) purposively selected from over 300 different companies across various business sectors. The sample constituted... -
Psychosocial Influences on Substance Abuse in a Sample of South African Youth: A Qualitative Analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nirmala D. Gopal --- University of KwaZulu-Natal, South Africa Steven J. Collings --- University of KwaZulu-Natal, South AfricaThis study investigated the lived experience of substance abusers in the South African context. Participants were 10 individuals attending a drug treatment centre in Durban, South Africa. Data were collected using open-ended interviews with data being analysed using thematic analysis... -
Psychometric Properties of the Religious Orientation Test (ROT) in a Sample of South African Students
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cynthia J Patel --- University of KwaZulu-Natal, South Africa Sarojini Naidoo --- University of KwaZulu-Natal, South Africa Zubeda Paruk --- University of KwaZulu-Natal, South AfricaThis study investigated the psychometric properties of the Religious Orientation Test (ROT) (Idehen, 2001) with 1284 South African respondents. Participants were 323 learners (mean age = 15.81, SD = 1.24) and 961 university students (mean age = 20.08, SD =... -
South African Educators' Understanding of Bullying
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Corene de Wet --- University of the Free State, South Africa Lynette Jacobs --- University of the Free State, South AfricaThis study examined educators' understanding of learner-on-learner school bullying. Participants were 91 educators from the Free State Province, South Africa (females = 65.9%, primary/elementary school teaching = 46.1%). Data on bullying was collected by means of questionnaires in which a... -
Substance Abuse Inpatients' Experience of Animal-Assisted Therapy
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nicoleen Coetzee --- University of Pretoria, South Africa Jarrod T. Beukes --- University of Johannesburg, South Africa Ingrid Lynch --- University of Pretoria, South AfricaThis study explored the utility of Animal Assisted Therapy (AAT) as a therapeutic modality within a substance abuse inpatient treatment programme in the Eastern Cape Province in South Africa. Four male participants residing in a 21-day treatment centre participated in... -
Measurement Equivalence of the South African Psychological Ownership Questionnaire for Diverse South African Cultural Groups
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Chantal Olckers --- University of Pretoria, Pieter Schaap --- University of Pretoria,This study determined the measurement equivalence of the South African Psychological Ownership Questionnaire (SAPOS) for black and white South African employees. Participants were a non-probability sample of 645 professional level employees from both the private and the public sector (59.4%... -
Dimensions of Job Satisfaction Identified Among South African Black Middle-level Managers: A Qualitative Investigation
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sonja C. Strydom --- Stellenbosch University, René van Eeden --- University of South Africa,The aim of the present study was to identify the factors contributing to job satisfaction for black middle-level managers and to contextualise these factors in terms of Afrocentric values and South Africa's socio-political and historical background. The sample comprised eight... -
The Use of Hermeneutics in the Criminological Interpretation of Forensic Documents: A Case Study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Michelle Ovens --- University of South Africa,This study explored the use of hermeneutics to retrospectively construct a criminological assessment. The data are archival records on a convicted woman (Mrs B: not real name) for the murder of her husband. The data are analyzed using a Ricoeurian... -
Quadratic Pencil of Difference Equations: Jost Solutions, Spectrum, and Principal Vectors
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Murat Adıvar --- Department of Mathematics, TurkeyIn this paper, a quadratic pencil of Schrodinger type difference operator Lλ is taken under investigation to provide a general perspective for the spectral analysis of non-selfadjoint difference equations of second order. Introducing Jost-type solutions, structure and quantitative properties of... -
On convergence of homotopy analysis method and its application to fractional integro-differential equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. Abbasbandy --- Department of Mathematics, Iran M.S. Hashemi --- Department of Mathematics and Computer Science, Engineering and Technical Faculty, Iran I. Hashim --- Centre for Modelling & Data Analysis, School of Mathematical Sciences, MalaysiaIn this paper, we have used the homotopy analysis method (HAM) to obtain approximate solution of fractional integro-differential equations (FIDEs). Convergence of HAM is considered for this kind of equations. Also some examples are given to illustrate the high efficiency... -
'But where are our moral heroes?' An analysis of South African press reporting on children affected by HIV/AIDS
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Helen Meintjes Rachel BrayMessages conveyed both explicitly and implicitly in the media play an important role in shaping the public's understanding of issues, as well as in shaping associated policy, programmes and popular responses to these issues. This paper applies discourse analysis to... -
Wearing the T-shirt: an exploration of the ideological underpinnings of visual representations of the African body with HIV or AIDS
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: AnnwenE BatesThe article takes a hermeneutic approach to exploring a selection of visual representations of the African body in relation to the issue of HIV and AIDS in Africa. In particular, it argues that the trope of 'deficiency' ('lack'), wherein Africa... -
The protective effect of male circumcision on HIV infection in a sample of Kenyan men
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: YanyiK Djamba LaToyaS DavisThis article examines the association between male circumcision and HIV infection in a national sample. The analysis is based on the 2003 Kenya Demographic and Health Survey (KDHS), a nationally representative household-based population survey of adults, in which male respondents... -
Waging war: discourses of HIV/AIDS in South African media
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Mark Connelly --- Department of Psychology, South Africa Catriona Macleod --- Department of Psychology, South AfricaThis paper explores a discourse of war against HIV/AIDS evident in the Daily Dispatch, a South African daily newspaper, from 1985 to 2000, and discusses the implications of this in terms of the way in which HIV/AIDS is constructed. The... -
Factors affecting first-month adherence to antiretroviral therapy amongHIV-positive adults in South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Dikokole Maqutu --- School of Statistics and Actuarial Science, South Africa Temesgen Zewotir --- School of Statistics and Actuarial Science, South Africa Delia North --- School of Statistics and Actuarial Science, South Africa Kogieleum Naidoo --- Centre for the AIDS Programme of Research in South Africa (CAPRISA), South Africa Anneke Grobler --- Centre for the AIDS Programme of Research in South Africa (CAPRISA), South AfricaThis study explores the influence of baseline factors on first-month adherence to highly active antiretroviral therapy (HAART) among adults. The study design involved a review of routinely collected patient information in the CAPRISA AIDS Treatment (CAT) programme, at a rural... -
Trend analysis and short-term forecast of incident HIV infection in Ghana
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Patrick Aboagye-Sarfo --- School of Engineering, Australia James Cross --- School of Engineering, Australia Ute Mueller --- School of Engineering, AustraliaThe study uses time-series modelling to determine and predict trends in incident HIV infection in Ghana among specific age groups. The HIV data for Ghana were grouped according to northern and southern spatial sectors as they exhibited slightly different data... -
Determinants of age at sexual debut and associated risks among South African youths
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Khangelani Zuma --- , South Africa Thembile Mzolo --- , South Africa Elias Makonko --- , South AfricaThe research uses data from a representative national survey to explore the determinants of age at sexual debut among South African youths in the age group 15–24 years. A random sample of 5 708 youths were interviewed and 92% responded... -
How disclosure and antiretroviral therapy help HIV-infected adolescents in sub-Saharan Africa cope with stigma
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Vivian Midtbø --- Department of Health Promotion and Development, Norway Violeth Shirima --- Department of Health Promotion and Development, Norway Morten Skovdal --- Department of Health Promotion and Development, Norway Marguerite Daniel --- Department of Health Promotion and Development, NorwayHIV-related stigma has a major impact on the health and psychosocial wellbeing of HIV-infected children and youths. While there is some debate about the extent to which improved access to antiretroviral therapy (ART) contributes to a reduction in HIV stigma,... -
Media ownership and news framing: an analysis of HIV/AIDS coverage by Ugandan press
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: James Kiwanuka-Tondo --- Department of Communication, United States KellyF Albada --- Department of Communication, United States Fay Cobb Payton --- Department of Communication, United StatesApplying framing theory, the present research analyzes trends in Ugandan news coverage and the prominent issue frames for HIV/AIDS-related stories. In order to determine the influence of other factors, such as media ownership and journalist origin, nearly 800 articles, from... -
Stable isotope (∂13C) composition of the food web of the temperate Kariega estuary (Eastern Cape)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PW FronemanStable isotope (∂13C) composition of the food web in the temperate Kariega estuary in summer and winter was analysed to determine the trophic relationships between 19 taxa. There was no seasonality in the stable isotope ratios of the dominant producers... -
The influence of downstream changes in water quality on phytoplankton composition in the Vaal River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Sanet Janse van Vuuren AJH PieterseLinks between spatial differences in phytoplankton composition and changes in environmental variables in the Vaal River, South Africa, were investigated. Multivariate analysis showed that the most important environmental variables influencing algal abundance were turbidity, conductivity, nutrient concentrations and temperature. Of... -
The use of multivariate analysis as a tool to illustrate the influence of environmental variables on phytoplankton composition in the Vaal River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Sanet Janse van Vuuren AJH PieterseThe highly eutrophic Vaal River system is subjected to algal blooms that cause problems ranging from aesthetically unacceptable conditions to the release of toxins. In order to understand how environmental variables influence one another and to determine the key environmental... -
Fatty acid composition of muscle and heart tissue of Nile perch, Lates niloticus, and Nile tilapia, Oreochromis niloticus, from various populations in Lakes Victoria and Kioga, Uganda
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Justus Kwetegyeka G Mpango O Grahl-NielsenThe fatty acid composition in the heart tissue and muscle tissue of the Nile perch, Lates niloticus, and Nile tilapia, Oreochromis niloticus populations from Lakes Kioga and Victoria was determined by methanolysis and gas chromatography of the resulting fatty acid... -
The food and feeding habits of five freshwater and brackish-water fish species in Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PO Ajah MN Georgewill MO AjahThe food and feeding habits of five economically important fresh-and brackish-water fishes, Channa obscura, Chrysichthys nigrodigitatus, Heterotis niloticus, Synodontis nigrita and Trachinotus maxillosus, were investigated. A number of techniques were used to carry out gut content analysis, including the Hynes... -
Historical analysis of the Journal of the Southern African Society of Aquatic Scientists and prospects for the development of a sub-Saharan African limnology
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Wishart --- Freshwater Research Unit, Department of Zoology, South Africa BR Davies --- Co-operative Research Centre for Freshwater Ecology, Australia M Coke --- , South AfricaFor many years the Journal published by the Southern African Society of Aquatic Scientists has aimed to provide a forum for the publication of research results, observations, comment, theories, hypotheses and other information on natural waters in and around Africa... -
Food web structure in three contrasting estuaries determined using stable isotope (∂13C) analysis
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PW Froneman --- Department of Zoology and Entomology, South AfricaFood web structure in three contrasting estuaries, the freshwater-deprived Kariega, the freshwater-dominated Great Fish River and the temporarily open/closed Kasouga estuary, along the south-east coast of southern Africa was investigated in summer (1–4 November) 2000 by employing stable carbon (∂13C)... -
Anthropogenic spatial and temporal changes in the aquatic macro invertebrate assemblages of the lower Mvoti River, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: W Malherbe --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa JHJ van Vuren --- Centre for Aquatic Research, Department of Zoology, South AfricaIndustrial and urban impacts on the lower reaches of the Mvoti River were studied using changes in macroinvertebrate community structures as indicators of environmental change. Macroinvertebrates were sampled during high- and low-flows in 2005 in the lower Mvoti River and... -
Fatty acids of polar lipids in heart tissue are good taxonomic markers for tropical African freshwater fish
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: J Kwetegyeka --- Department of Chemistry, Uganda J Masa --- Department of Chemistry, Uganda BT Kiremire --- Department of Chemistry, Uganda GB Mpango --- Department of Chemistry, Uganda O Grahl-Nielsen --- Department of Chemistry, NorwayThe fatty acid profiles in total, neutral and polar lipids in the heart tissues of five freshwater fish species (Nile perch Lates niloticus, Nile tilapia Oreochromis niloticus, marbled lungfish Protopterus aethiopicus, Bagrus docmak and African catfish Clarias gariepinus) from Lakes... -
Water quality assessment and application of the biological diatom index in the Kebir-East wadi, Algeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Chaïb --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria J Tison-Rosebery --- Cemagref Bordeaux, FranceA total of 118 benthic diatom taxa were recorded during a survey in 2007 of the Kebir-East wadi, north-eastern Algeria. Fourteen samples were collected at seven sampling stations in winter and summer. The majority of diatom taxa comprised cosmopolitan species... -
Heavy metal concentrations in the water of the Nyl River system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Greenfield --- Department of Zoology, South Africa JHJ van Vuren --- Department of Zoology, South Africa V Wepener --- Department of Zoology, South AfricaThe Nyl River floodplain, a Ramsar site that provides habitat for a number of endangered species, is one of the jewels in the arid Limpopo province and thus its conservation and protection are vitally important. Very little work has been... -
Diet of the demersal feeding Leiognathus equula in the Mfolozi–Msunduzi estuarine system, South Africa, in response to an impoverished macrobenthic invertebrate community
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JBB Nhleko --- Coastal Research Unit of Zululand, Department of Zoology, South Africa DP Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South Africa L Vivier --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaLeiognathus equula, a species generally regarded as a zoobenthic feeder, was the most abundant fish species sampled in the Mfolozi–Msunduzi estuarine system in 2008–2010, despite the zoobenthos in this system being impoverished. Four dietary assessment methods all confirmed that its... -
Phenotypic characterisation in interspecific and intergeneric hybrids of the clariid catfishes Heterobranchus longifilis, Clarias gariepinus and Clarias anguillaris in Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AA Akinwande --- Department of Fisheries Technology, Nigeria OA Fagbenro --- Department of Fisheries and Aquaculture, Nigeria OT Adebayo --- Department of Fisheries and Aquaculture, NigeriaThirty-nine morphometric and five meristic comparisons were carried out on 12-month-old interspecific and intergeneric hybrids of the African clariid catfishes Heterobranchus longifilis, Clarias gariepinus and Clarias anguillaris from experimental earthen ponds in Nigeria. Canonical discriminant analysis accounted for 89.4% of... -
Flood effects on trophic linkages of selected fish species in the littoral zone of the St Lucia estuarine system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Peer --- School of Life Sciences, South Africa NK Carrasco --- School of Life Sciences, South Africa R Perissinotto --- School of Life Sciences, South Africa SJ du Plooy --- School of Life Sciences, South AfricaThe St Lucia Estuary, a UNESCO World Heritage Site, has experienced prolonged mouth closure since 2002. Until recently it was hypersaline, but heavy rainfall between October 2010 and January 2011 led to a large overall decrease in salinity. A stable... -
The Structure of Cellulose by Conformational Analysis.
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. Pizzi --- , N. Eaton --- ,Conformational analysis studies on the tertiary structure of cellobiose and methyl-β-cellobioside were carried out by using calculations of Van der Waals, H-bond, electrostatic and torsional energy interactions between the atoms and groups of the molecules. Energy maps in function of... -
The Structure of Cellulose by Conformational Analysis.
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. Pizzi --- Council for Scientific and Industrial Research, South Africa N. Eaton --- Council for Scientific and Industrial Research, South AfricaThe Meyer/Misch and related models were found to be the most energetically stable for the crystalline structure of cellulose I. The cellobioside structure is the monomer of cellulose I as structures having cellobiose as monomer have been proven to be... -
10. Multivariate Analysis A Way to Better Understanding of Complexity
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. van Laar --- Faculty of Forestry, South Africa -
An Introduction to Digital Terrain Modelling in Forest Site Analysis—An Example from the Grabouw-Lebanon Key Area
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.N. Thwaites --- Saasveld Forestry Research Centre,An outline of the concept of digital terrain modelling (DTM) is provided which includes the model structure, data capture methods and approaches to analysis and display. Mention is made of the variety of work environments in which DTM is used... -
The Effect of Ripping in Combination with Fertiliser to Ameliorate Forest Sites on the Harkerville Plateau, Southern Cape
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. van Laar --- Faculty of Forestry,The effect of soil preparation combined with fertiliser treatment on mortality and early height growth of Pinus radiata was investigated on the Harkerville Plateau in the southern Cape Region of the Cape Province. The effect of soil preparation on mortality... -
Metal contamination of sediments and fish from the Vaal River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: W Pheiffer --- Unit for Environmental Sciences and Management, R Pieters --- Unit for Environmental Sciences and Management, JC van Dyk --- Department of Zoology, NJ Smit --- Unit for Environmental Sciences and Management,Mining and other economic activities have led to the pollution of the Vaal River with metals of mainly industrial origin, but the consequences of this for animal and human health are unknown. Based on chemical analysis and histological examination, we... -
A Social Cost-benefit Analysis of a Small-scale Clam Fishery in the Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R. Sims-Castley S. G. HoskingWhen a proposal was advanced in 1991 to harvest the wedge clam Donax serra in the Eastern Cape, South Africa, for commercial gain, it elicited a huge public outcry. In order to shed light on the issue, a social cost-benefit... -
A Statistical Model for Stock Assessment of Southern Bluefin Tuna with Temporal Changes in Selectivity
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D. S. Butterworth J. N. Ianelli R. HilbornAssessment of the status of southern bluefin tuna (SBT) by Australia and Japan has used a method (ADAPT) that imposes a number of structural restrictions, and is similar to methods used for a number of stocks world-wide. A flexible method... -
Seabirds in the diet of Cape fur seals Arctocephalus pusillus pusillus at three mainland breeding colonies in Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Mecenero SP Kirkman J-P RouxPredation by Cape fur seals Arctocephalus pusillus pusillus on seabirds has previously been attributed to a few individuals, mainly males. Scat samples were collected at three mainland breeding colonies of seals in Namibia to determine the extent of seabird predation... -
Water-body preferences of dominant calanoid copepod species in the Angola-Benguela frontal zone
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Loick W Ekau HM VerheyeThe distribution of five dominant calanoid copepods was related to different water masses in the Angola-Benguela Front system. Five water bodies were identified by principal component analysis, on the basis of abiotic parameter such as temperature, salinity, dissolved oxygen, phosphate,... -
Diet of Cape fur seals Arctocephalus pusillus pusillus at three mainland breeding colonies in Namibia. 1. Spatial variation
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Mecenero J-P Roux LG Underhill MN BesterThe diet composition of Cape fur seals Arctocephalus pusillus pusillus was investigated from three breeding colonies in Namibia between January 1994 and April 2002 using scat analysis. Otolith numbers were corrected for those lost during digestion before determining the percentage... -
Diet of Cape fur seals Arctocephalus pusillus pusillus at three mainland breeding colonies in Namibia. 2. Temporal variation
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Mecenero J-P Roux LG Underhill SP KirkmanScat analysis was used to assess temporal variability in the diet composition of Cape fur seals Arctocephalus pusillus pusillus from three breeding colonies in Namibia (January 1994 to April 2002). The diet displayed significant inter- and intra-annual variation in composition... -
Identification of acoustic targets off Angola using General Discriminant Analysis
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Vaz Velho BE Axelsen P Barros G Bauleth-D'AlmeidaPelagic fish off Angola constitute about 80% of the total fish landed and some 75% of the animal protein in the diet of the coastal population. The primary means of estimating stock abundance is through acoustic surveys, a method that... -
Cross-shelf observations of diet and diel feeding behaviour of the bearded goby Sufflogobius bibarbatus off Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Hundt --- Department of Biology, Norway AC Utne-Palm --- Department of Biology, Norway MJ Gibbons --- Department of Biodiversity and Conservation Biology, South AfricaThe diet of the bearded goby Sufflogobius bibarbatus was studied at two 48 h stations off the Namibian coast. The inner station (120 m) was characterised by a deep layer of low-oxygen bottom water (<0.5 ml DO l−1 or <10%... -
Changes in demersal fish assemblages on the west coast of South Africa, 1986–2009
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LJ Atkinson --- , South Africa RW Leslie --- Fisheries Branch, Department of Agriculture, South Africa JG Field --- , South Africa A Jarre --- , South AfricaResearch survey data collected over 24 years (1986–2009) were used to explore long-term changes in demersal fish assemblages on the west coast of South Africa. Differences in spatial (latitude and depth) and temporal (seasonal and annual) factors were examined using... -
Diet of the Cape fur seal Arctocephalus pusillus pusillus at the Robberg Peninsula, Plettenberg Bay, and implications for local fisheries
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Huisamen --- School of Natural Resource Management, South Africa SP Kirkman --- Oceans and Coasts, Department of Environmental Affairs, South Africa CD van der Lingen --- Branch: Fisheries, Department of Agriculture, Forestry and Fisheries, South Africa LH Watson --- School of Natural Resource Management, South Africa VG Cockcroft --- Department of Zoology, South Africa R Jewell --- Centre for Dolphin Studies, South Africa PA Pistorius --- Department of Zoology, South AfricaCape fur seals Arctocephalus pusillus pusillus were harvested to extirpation on the Robberg Peninsula, Plettenberg Bay, on the south-east coast of South Africa, between the 17th and early 20th centuries. Seals returned to Robberg in small numbers during the early... -
Optimal BRUVs (baited remote underwater video system) survey design for reef fish monitoring in the Stilbaai Marine Protected Area
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L De Vos --- Percy FitzPatrick Institute of African Ornithology, South Africa A Götz --- Elwandle Node, South Africa H Winker --- Marine Research Institute, Department of Biological Sciences, South Africa CG Attwood --- Marine Research Institute, Department of Biological Sciences, South AfricaMarine protected areas (MPAs) play an important role in coastal conservation, but there is presently no uniformly applied methodology for monitoring the efficacy of coastal fish protection. Whereas underwater visual census and controlled angling surveys have been used, their skilled-labour... -
Articulating the Construct of Organizational Innovativeness in Iranian SMEs
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, IranThis paper investigates Small and Medium Sized Enterprises' (SMEs) innovative moves applied to their practical works. The different dimensions of the organizational innovation implication in Iranian SMEs at Qom province are explored. Based on the findings a model was developed... -
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, IranIt 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... -
The Impact of Underutilization of Modern Family Planning Methods on Adverse Outcomes of Pregnancy in Women Aged 15 to 49 in Pretoria, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Zeleke Worku --- Tshwane University of Technology (TUT) Business School, South Africa Mammo Muchie --- Institute for Economic Research on Innovation, Tshwane University of Technology, South AfricaThis paper is a result of a 6-year long follow-up study that was conducted in Pretoria, South Africa between 2004 and 2009 in order to assess the impact of underutilization of modern family planning methods on adverse outcomes of pregnancy... -
Genotype by environment interaction for volume growth at 6 years of age in a series of five Pinus patula progeny trials in southern Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Arnulf Kanzler --- Sappi Forest Research, South Africa Sieg F. Hagedorn --- , South Africa Gary R. Hodge --- CAMCORE, USA William S. Dvorak --- CAMCORE, USAGenotype x environment interaction was investigated in a series of 5 Pinus patula progeny trials planted by the Institute for Commercial Forestry Research in southern Africa. The trials were established from Mpumalanga to the North-eastern Cape in a balanced 7x7... -
“Shorthaul” pulpwood transport in South Africa. A network analysis case study
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Pierre A. Ackerman --- Forest Engineering, Faculty of Agricultural and Forestry Sciences, South Africa Reino E. Pulkki --- Faculty of Forestry and the Forest Environment, CanadaShorthaul transport, also known as secondary intermediate transport (SIT), is a feature of pulpwood transport in South Africa. SIT is an additional transport phase within traditional secondary transport. It originates at roadside landing or depot and terminates at another depot,... -
How a dependent variable's non-randomness affects taper equation fitting
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Kitikidou Kyriaki --- Demokritian University of Thrace, Greece (Department of Forestry and Management of Environment and Natural Resources, Laboratory of Forest Biometry), GreeceIn order to apply the least squares method in regression analysis, the values of the dependent variable Y should be random. In an example of regression analysis linear and nonlinear taper equations, which estimate the diameter of the tree dh... -
Fibre volume losses of eight softwood clearfell harvesting systems in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: P Ackerman --- Department of Forest and Wood Science, South Africa R Pulkki --- Department of Forest and Wood Science, South AfricaA study of both fibre volume loss and related opportunity cost was performed across the South African softwood sawtimber industry to gain information on the actual utilisation of useful fibre and potential loss or gain of opportunity in terms of... -
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, GermanyThe 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’... -
A model to predict productivity of different chipping operations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: MohammadR Ghaffariyan --- , Australia Raffaele Spinelli --- , Italy Mark Brown --- , AustraliaThe chipping operation is an important component of harvesting systems producing biomass and pulp chips. This paper aimed to develop a valid model to predict the productivity of chipping as part of these operations. Over a number of years more... -
The role of the forestry industry for the success of community forestry: a comparative input–output analysis across India and the Philippines
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jungho Suh --- Geography, Environment and Population, AustraliaThis paper uses the 'input–output analysis' technique to investigate why the Joint Forest Management program in India has expanded while the uptake of the Community-based Forest Management program in the Philippines has been relatively slow. The forward linkage of the... -
Long-term population effect of male circumcision in generalised HIV epidemics in sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Michel GarenneThis paper examines the complex relationship between male circumcision and HIV prevalence and incidence in sub-Saharan African countries that have generalised epidemics. In South Africa, the mean yearly HIV incidence and an estimate of the net reproduction rate of the... -
Parental communication with children about sex in the South African HIV epidemic: raced, classed and cultural appropriations of Lovelines
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lindy WilbrahamResponsive to perceived high risk of HIV infection by sexually active youth, several South African sexual health-promotion campaigns have used media targeting mothers, instructing them on how sex should be talked about with their children to 'risk-proof' them. A Foucauldian... -
Uptake of voluntary counselling and testing for HIV by pregnant women in a prevention-of-mother-to-child-transmission programme at Aminu Kano Teaching Hospital, Nigeria
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: HadizaS Galadanci Zubairu Iliyasu Jamilu Tukur Mariya Muktar-Yola SolomonI AdelekeMother-to-child transmission is the main mode of HIV infection among children in developing countries. In 2003, as a result of government policy, a prevention-of-mother-to-child-transmission (PMTCT) programme was introduced at Aminu Kano Teaching Hospital in Nigeria. The aim of this study... -
Growth, productivity, and scientific impact of sources of HIV/AIDS research information, with a focus on eastern and southern Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Omwoyo Bosire OnyanchaAs channels of communicating HIV/AIDS research information, serial publications and particularly journals are increasingly used in response to the pandemic. The last few decades have witnessed a proliferation of sources of HIV/AIDS-related information, bringing many challenges to collection-development librarians as... -
Health-related quality of life in a sample of HIV-infected South Africans
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Karl Peltzer Nancy Phaswana-MafuyaThe study aims to assess the health-related quality of life and HIV symptoms of a sample of people living with HIV (PLHIV) in South Africa. The sample included 607 PLHIV from all districts of the Eastern Cape Province, recruited either... -
Major constraints affecting aquaculture development in Akwa Ibom State, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: IniobongA Akpabio EmemB InyangThe study contributes to nationwide attempts to enhance the contributions of aquaculture to the fishery subsector, and consequent overall gross domestic product of Nigeria, as well as to the protein intake of her citizenry. The focus is on the determination... -
Temporal trends in total phosphorus, temperature, oxygen, chlorophyll a and phytoplankton populations in Hartbeespoort Dam and Roodeplaat Dam, South Africa, between 1980 and 2000
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CarinE van Ginkel MichaelJ SilberbauerEutrophication, phytoplankton blooms and changes to the phytoplankton composition are some of the problems facing the managers of Hartbeespoort Dam and Roodeplaat Dam. Trends, both decreasing and increasing, are visible in the phosphorus concentrations, temperatures, dissolved oxygen concentrations and chlorophyll... -
Does reservoir trophic status influence the feeding and growth of the sharptooth catfish, Clarias gariepinus (Teleostei: Clariidae)?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: WM Potts T Hecht TG AndrewThe diet and growth of sharptooth catfish, Clarias gariepinus, in an oligotrophic system (Kat River Reservoir, Eastern Cape, South Africa) were compared to those in a eutrophic system (Laing Reservoir, Eastern Cape) to determine if the trophic status of a... -
Bioaccumulation of platinum group metals in dolphins, Stenella sp., caught off Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DK EssumangPlatinum group metals (PGMs) concentrations were measured in the tissues= of dolphins (Stenella sp.) caught along the Ghanaian coastline. Tissues from specimens caught by fishermen from Dixcove, western Ghana, were analysed in 2006 for palladium (Pd), platinum (Pt) and rhodium... -
Haematological characteristics of African bony tongue, Heterotis niloticus (Teleostei: Arapaimidae), in south-western Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EO Ayotunde OA Fagbenro BO OffemHaematological characteristics — including red and white blood cells counts, haemoglobin, haematocrit, mean cell haemoglobin concentration, mean cell volume, mean cell haemoglobin, protein, glucose, albumin, sodium, chloride, potassium, magnesium and phosphorus — were established from an examination of 25 adult... -
Does Serranochromis altus (Teleostei: Cichlidae) exist in the Okavango Delta, Botswana?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: FH van der Bank M Wink M Soekoe N SmitTwo possibly synonymous fish species in the Okavango Delta, Botswana, Serranochromis altus and S. angusticeps, were compared. Ecological data, morphometrics, meristics, allozymes, and genomic fingerprints — generated with six Inter-Simple Sequence Repeat (ISSR) analyses, and DNA barcoding primers — were... -
The impact of feedlot effluent on water quality and aquatic macroinvertebrate community structure in streams of the upper Vaal River catchment, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M-N Jonker --- Centre for Aquatic Research, Department of Zoology, South Africa JHJ van Vuren --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South AfricaThe impact of three intensive feedlots on aquatic macroinvertebrate community structure under high and low flows in the upper Vaal catchment was investigated. Water quality variables recorded upstream and downstream of feedlot activity include pH, dissolved oxygen, conductivity, temperature, turbidity,... -
Application of the sequential t-test algorithm for analysing regime shifts to the southern Benguela ecosystem
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JAE Howard A Jarre AE Clark CL MoloneyLong-term ecosystem changes, such as regime shifts, have occurred in several marine ecosystems world-wide. Multivariate statistical methods have been used to detect such changes. A new method known as the sequential t-test algorithm for analysing regime shifts (STARS) is applied... -
Merluccius capensis spawn in Namibian waters, but do M. paradoxus?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Kainge OS Kjesbu A Thorsen AG SalvanesSpawning time and areas, and the length of the spawning season of shallow-water (Merluccius capensis) and deep-water (M. paradoxus) hake, were investigated from bottom trawl collections taken in Namibian waters between September 1998 and October 2000 and from August to... -
The effects of soil conditions and grazing strategy on plant species composition in a semi-arid savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M-L Britz D WardThe tree:grass ratio of savannas is important, especially in the semi-arid savannas of South Africa. An increase in tree cover leads to reduced productivity and profitability of rangelands. We investigated the effects of soil type and grazing strategy on the... -
Potential impacts of climate change on the climatically suitable growth areas of Pinus and Eucalyptus: results from a sensitivity study in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: ML Warburton RE SchulzeGlobal average surface temperature has increased by approximately 0.74 °C over the most recent 100-year period. At a regional level in South Africa, detectable changes in both the rainfall and temperature patterns have occurred in the past 50 years. Climate... -
Wind farms threaten southern Africa's cliff-nesting vultures
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ian Rushworth --- Scientific Services, South Africa Sonja Krüger --- Scientific Services, South AfricaWind farms have been shown to cause bird mortality in many studies. Proposals for the development of wind farms in Lesotho, which is core habitat for small and declining populations of the regionally Endangered Bearded Vulture Gypaetus barbatus meridionalis and... -
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, TunisieThe 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... -
The influence of South Africa's post-apartheid land reform policies on bush encroachment and range condition: a case study of Fort Beaufort's municipal commonage
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James R Puttick --- Plant Conservation Unit, Department of Biological Sciences, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa James Gambiza --- Department of Environmental Science, South AfricaWe examined the effect of changes in land use and land tenure on bush encroachment and vegetation condition. An analysis of aerial photographs from three time steps (1949, 1985 and 2004) was used to document changes in woody plant density... -
The impact of land use on woody plant cover and species composition on the Grahamstown municipal commonage: implications for South Africa's land reform programme
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James R Puttick --- Plant Conservation Unit, Department of Biological Sciences, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa James Gambiza --- Department of Environmental Science, South AfricaUsing an analysis of aerial photographs from 1942, 1985 and 2004 we assessed the impact of changing land tenure and land-use regimes on the cover of thicket vegetation on the Grahamstown commonage. Land-use impacts were examined by comparing plant species... -
Case study: Systemic complications following absolute alcohol embolisation of scalp arteriovenous malformation
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: S Agrawal --- Department of Anesthesia, Pain and Intensive Care, India YS Payal --- Department of Anesthesia, Pain and Intensive Care, India S Burathoki --- Department of Radiology, India V Asthana --- Department of Anesthesia, Pain and Intensive Care, India A Rizvi --- Department of Anesthesia, Pain and Intensive Care, India JP Sharma --- Department of Anesthesia, Pain and Intensive Care, IndiaAlcohol ablation is an accepted technique for the management of arteriovenous malformations. It is preferred due to the unique property of absolute alcohol to cause complete ablation and prevention of revascularisation. However, this technique is associated with multiple complications which... -
A meta-analysis of intraoperative factors associated with postoperative cardiac complications
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: DL Skinner --- Department of Surgery, S Goga --- Perioperative Research Unit, Department of Anaesthetics, RN Rodseth --- Perioperative Research Unit, Department of Anaesthetics, BM Biccard --- Perioperative Research Unit, Department of Anaesthetics,Background: Preoperative cardiac risk is commonly determined with the help of risk scores and risk stratification tools. This predetermined cardiac risk may be profoundly changed by intraoperative surgical events. This meta-analysis aimed to identify intraoperative factors that independently predict postoperative... -
Review of common cutaneous adverse drug reactions
Item type: Journal Article • Journal: South African Family Practice • Authors: MH Motswaledi --- Department of Dermatology, -
A bibliometric analysis of research publications funded partially by the Cancer Association of South Africa (CANSA) during a 10-year period (1994–2003)
Item type: Journal Article • Journal: South African Family Practice • Authors: C Albrecht --- Cancer Association of South Africa,Background: The objective of this study was to establish the quantity and quality of research publications outputs by grant recipients of the Cancer Association of South Africa (CANSA) over a 10-year period (1994–2003). -
Infertility: an update for the family practitioner
Item type: Journal Article • Journal: South African Family Practice • Authors: TF Kruger --- Department of Obstetrics and Gynaecology, Unit for Reproductive Biology, South Africa JP Van der Merwe --- Department of Obstetrics and Gynaecology, Unit for Reproductive Biology, South AfricaThe incidence of infertility is approximately 15–20% (one in every five to six couples). The investigation of the infertile couple begins with a careful history, followed by a physical examination. If any abnormality is observed in the history, the couple... -
Tablet computers for recording tuberculosis data at a community health centre in King Sabata Dalindyebo Local Municipality, Eastern Cape: a proof of concept report
Item type: Journal Article • Journal: South African Family Practice • Authors: Don O’Mahony --- Department of Family Medicine, Graham Wright --- Department of Family Medicine,Background: Data at primary healthcare (PHC) clinics are handwritten in registers by nurses for submission to the District Health Information System (DHIS). Compared to pen and paper, data capture, using handheld computers, has fewer errors, is more efficient and is... -
Is screening for microalbuminuria in patients with type 2 diabetes feasible in the Cape Town public sector primary care context? A cost and consequence study
Item type: Journal Article • Journal: South African Family Practice • Authors: HO Ibrahim --- Division of Family Medicine and Primary Care, D Stapar --- Division of Family Medicine and Primary Care, B Mash --- Division of Family Medicine and Primary Care,Background: Type 2 diabetes contributes significantly to the burden of disease in South Africa. Proteinuria is a marker for chronic kidney and cardiovascular disease. All guidelines recommend testing for microalbuminuria because intervention at this stage can prevent or delay the... -
Factors shaping condom use among South African university students: a thematic analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cleo Protogerou --- Department of Psychiatry and Mental Health, Division of Child and Adolescent Psychiatry, South Africa Alan J. Flisher --- Department of Psychiatry and Mental Health, Division of Child and Adolescent Psychiatry, South Africa Lauren G. Wild --- Department of Psychology, South AfricaThis study aimed to investigate contextual influences on condom use by South African university students. Twenty one-to-one, semi-structured interviews were conducted with male and female South African undergraduates. The data were thematically analysed. Results revealed that condom use was transient... -
Prioritising species for research, conservation and management: a case study of exploited fish species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SJ Lamberth --- Branch: Fisheries Management, Department of Agriculture, South Africa AR Joubert --- Southern Waters Ecological Research and Consulting, South AfricaStudies that categorise species according to their conservation status often fall short in their implementation by not having taken into account the impacts on, or the response from, those that either benefit from, or exploit, the resource under consideration. This... -
Trophic investigations of Cape fur seals at the easternmost extreme of their distribution
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Connan --- Department of Zoology, South Africa GJG Hofmeyr --- Department of Zoology, South Africa MJ Smale --- Department of Zoology, South Africa PA Pistorius --- Department of Zoology, South AfricaThe diet of Cape fur seals Arctocephalus pusillus pusillus in the eastern portion of their distribution has received little attention previously, and was studied using traditional methods only. In 2013 we therefore assessed the diet of seals at the easternmost... -
The HIV/AIDS caregiver identity as a double-edged sword: a discourse analysis on HIV/AIDS caregiving in South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Vania Ranjbar --- Angered Hospital, SwedenThis article discusses the identity of HIV/AIDS caregivers as constructed by a group of HIV/AIDS caregivers at a non-profit organisation in South Africa. During a 12-month period data were collected through interviews with the organisation's staff and volunteers. Using discourse... -
The caregiver experience: a South African perspective on caring for people with multiple sclerosis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Daniel R. du Plooy --- Stellenbosch University, South Africa Chrisma Pretorius --- Stellenbosch University, South AfricaThis study explored the lived experiences of caregivers of people with multiple sclerosis (MS) with regard to their daily challenges, as well as the resources which help them to cope with their caregiving task. Participants were eight South African men... -
Computerised inventory management for a manufacturing industry: A case study in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Emmanuel Seye Owoeye --- Mechanical Engineering Department, Nigeria Samuel Babatope Adejuyigbe --- Mechanical Engineering Department, Nigeria Bukola Olalekan Bolaji --- Mechanical Engineering Department, Nigeria A.F. Adekoya --- Computer Science Department, NigeriaVarious authors have suggested that the cost of purchasing and holding inventory can account for as much as 60%–80% of the total cost of a product or service. Usually, only some of the inventory (about 10%) contributes to 70%–80% of... -
Generational inversions: ‘working’ for social reproduction amid HIV in Swaziland
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Casey Golomski --- Department of Anthropology, South AfricaHow do people envision social reproduction when regular modes of generational succession and continuity are disrupted in the context of HIV/AIDS? How and where can scholars identify local ideas for restoring intergenerational practices of obligation and dependency that produce mutuality... -
Values in children's stories in South Africa: an exploratory discourse analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Anne Fleischack --- Department of Psychology, South Africa Trudy Meehan --- Department of Psychology, South AfricaThis study explored the presentation and construction of the values in story texts for children in South Africa. The data were from five children's stories from a widely-circulated weekly newspaper. The story content was analysed for value-laden themes child readers... -
Does estuarine health relate to catchment land-cover in the East Kleinemonde system, South Africa?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: VA Masefield --- Department of Geography, South Africa GK McGregor --- Department of Geography, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaTemporarily open/closed estuaries in South Africa are being subjected to varying degrees of catchment land-cover transformation. Natural landscapes and hydrological functions are integral to the functioning of estuaries. The relationship between catchment land-cover and the health of the East Kleinemonde... -
Psychometric evaluation of the Basic Traits Inventory in the multilingual South African environment
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sonja Grobler --- Industrial and Organisational Psychology Department, College of Economic and Management Sciences, South Africa Marié de Beer --- Industrial and Organisational Psychology Department, College of Economic and Management Sciences, South AfricaThe objective of this study was to evaluate the psychometric properties of the BTI for all the official language groups in South Africa. Item bias analysis was performed by means of Rasch analysis for a sample of 105 342 respondents... -
Efficiency of Mexico's regional innovation systems: an evaluation applying data envelopment analysis (DEA)
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Cuitláhuac Valdez Lafarga --- Student in Doctoral Programme, Mexico Jorge Inés León Balderrama --- Regional Development Department, MexicoThe aim of this study is to measure the relative technical efficiency of Mexico´s regional innovation systems, as defined by its 32 states. Furthermore, there is an interest to establish the relationship between the amount of resources for each regional... -
Spring diet and trophic partitioning in an alpine lizard community from Morocco
Item type: Journal Article • Journal: African Zoology • Authors: Miguel A. Carretero --- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO/UP), Campus Agrário de Vairão, Portugal Anna Perera --- Departamento de Biologia Animal, Spain D. James Harris --- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO/UP), Campus Agrário de Vairão, Portugal Vasco Batista --- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO/UP), Campus Agrário de Vairão, Portugal Catarina Pinho --- Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO/UP), Campus Agrário de Vairão, PortugalOukaïmeden Plateau is a herpetologically rich locality in the High Atlas (Morocco) where four lizard species coexist in strict sympatry: three lacertids (Lacerta perspicillata chabanaudi, L. andreanszkyi and Podarcis vaucheri – formerly P. hispanica vaucheri) and one gekkonid (Quedenfeldtia trachyblepharus)... -
Preliminary observations on the diet of leopards (Panthera pardus) from a conservation area and adjacent rangelands in the Baviaanskloof region, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Theresia Ott --- Centre for African Conservation Ecology, Department of Zoology, South Africa Graham I. H. Kerley --- Centre for African Conservation Ecology, Department of Zoology, South Africa André F. Boshoff --- Centre for African Conservation Ecology, Department of Zoology, South AfricaPastoralists on rangelands adjacent to the Baviaanskloof Provincial Nature Reserve, Eastern Cape, report stock losses through predation by leopards (Panthera pardus). This leads, in certain cases, to persecution of the leopards. This study attempted to quantify livestock depredation by leopards... -
Diet of largemouth bass, Micropterus salmoides (Centrarchidae), an invasive alien in the lower reaches of an Eastern Cape river, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: R.J. Wasserman --- Department of Zoology, South Africa N.A. Strydom --- Department of Zoology, South Africa O.L.F Weyl --- South African Institute for Aquatic Biodiversity, South AfricaLargemouth bass (Micropterus salmoides) have been introduced to many South African river systems where they become invasive and pose a threat to native biota. The diets of small (32–138 mm TL) and large (192–448 mm TL) sized bass were analysed... -
Survival and movement of the Congo forest mouse (Deomys ferrugineus): a comparison of primary rainforest and fallow land in Kisangani, Democratic Republic of Congo
Item type: Journal Article • Journal: African Zoology • Authors: Jan Kennis --- Evolutionary Ecology Group, University of Antwerp, Belgium Crespin Laurent --- INRA, UR346 d’Epidémiologie animale, France Nicaise Drazo Amundala --- Animal Ecology and Resource Management Laboratory (LEGERA), University of Kisangani, Democratic Republic of Congo Akaibe Migimiru Dudu --- Animal Ecology and Resource Management Laboratory (LEGERA), University of Kisangani, Democratic Republic of Congo Herwig Leirs --- Evolutionary Ecology Group, University of Antwerp, BelgiumThe Congo forest mouse, Deomys ferrugineus, occurs readily in natural and human-altered habitats in the region of Kisangani (Democratic Republic of Congo). We studied survival and movement patterns of D. ferrugineus in both habitats. Capture-mark-recapture was used to study the... -
The phylogeography of Lemniscomys striatus (Rodentia: Muridae) confirms a remarkable vicariant event in neighbouring savanna populations in Central Gabon
Item type: Journal Article • Journal: African Zoology • Authors: J. F. Mboumba --- Université des Sciences et Techniques de Masuku, Gabon V. Nicolas --- Muséum National d’Histoire Naturelle, Département de Systématique et Evolution, France M. Colyn --- Université de Rennes 1, France P. Deleporte --- Université de Rennes 1, FranceOur recent phylogeographic study on the strictly savanna small rodent Nannomys minutoides revealed an unexpected pattern of divergence between populations occupying neighbouring savanna islands in Central Gabon, suggesting the historical and continuing fragmentation of these savanna habitats. In this study,... -
A comparative analysis of the diets of Varanus albigularis and Varanus niloticus in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Kim Dalhuijsen --- Animal, Plant and Environmental Sciences, University of the Witwatersrand, South Africa William R. Branch --- Bayworld, South Africa Graham J. Alexander --- Animal, Plant and Environmental Sciences, University of the Witwatersrand, South AfricaWe present data from gut content analyses of Varanus albigularis (savanna monitor) and V. niloticus (water monitor) in South Africa. Both species are generalist, opportunistic feeders. We did not detect any sex-based differences in the diet of V. albigularis, and... -
Sex differentiation based on the gular stripe in the apparently monomorphic Cape gannet
Item type: Journal Article • Journal: African Zoology • Authors: Gavin M. Rishworth --- Department of Zoology, South Africa Maëlle Connan --- Department of Zoology, South Africa David B. Green --- Department of Zoology, South Africa Pierre A. Pistorius --- Department of Zoology, South AfricaThe Cape gannet, Morus capensis, has long been considered a monomorphic species despite attempts at phenotypically separating the sexes. In a further effort we here recorded morphometric measurements from genetically sexed Cape gannets. Discriminant function analysis was used to classify... -
Sexing monomorphic western mountain greenbuls on Mount Cameroon using morphometric measurements
Item type: Journal Article • Journal: African Zoology • Authors: Eric Djomo Nana --- Department of Ecology, Czech Republic Pavel Munclinger --- Department of Zoology, Czech Republic Michal Ferenc --- Department of Ecology, Czech Republic Ondřej Sedlàček --- Department of Ecology, Czech Republic Tomàč Albrecht --- Department of Zoology, Czech Republic David Hořàk --- Department of Ecology, Czech RepublicThe western mountain greenbul, Andropadus tephrolaemus, is a poorly-known monomorphic forest greenbul. We investigated whether morphological measurements could be used to discriminate between sexes of this species, with a sample of birds captured in two forest types on Mt Cameroon... -
The status of the Damara Tern in the Eastern Cape, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Philip A Whittington --- East London Museum, South Africa Anthony J Tree --- Department of Zoology, South Africa Maëlle Connan --- Department of Zoology and Entomology, South Africa Elizabeth G Watkins --- , South AfricaThe Eastern Cape population of the Damara Tern Sternula balaenarum was estimated to be 25–29 pairs in the 2008/09 and 2009/10 breeding seasons. The population appears to be stable and has probably increased slightly since the early 1990s. An eastward... -
Extraordinary items: Accounting and market risk
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: J A Miller --- Emeritus Professor in Accounting and Finance,The market reaction to the recurrent reporting of extraordinary items was tested by calculating and comparing the betas for a portfolio of shares that reported extraordinary items in each of the five years 1990 through 1994 and a control portfolio... -
Factors influencing credit assessment
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Ward --- Wits Business School, Graduate School of Business Administration,This study examines the perceptions of credit analysts on which factors determine credit risk. A sample drawn from the major international credit underwriters was used to rank a previously derived set of micro-economic variables in terms of their importance as... -
Biplots for displaying multidimensional financial performance data graphically
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: N J le Roux --- Department of Statistics and Actuarial Science, Republic of South Africa S Gardner --- Department of Statistics and Actuarial Science, Republic of South Africa P Olivier --- Department of Accountancy, Republic of South AfricaInvariably financial performance of an enterprise is not judged on a single criterion but is described in terms of various related financial performance indicators. Financial decision makers are thus typically confronted with multidimensional data. This paper demonstrates to financial managers... -
The use and perceived usefulness of IAS 29 restated financial statements by Zimbabwean investment analysts
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E Chamisa --- Department of Accounting,International Accounting Standard 29 (IAS 29) (Financial Reporting in Hyperinflationary Economies) asserts that, in a hyperinflationary economy, financial statements “are useful only if they are expressed in terms of the measuring unit current at the balance sheet date” (International Accounting... -
Estimating technical and scale efficiency in banks and its relationship with economic value added: A South African study
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Oberholzer --- WorkWell: Research Unit for Economic and Management Sciences, Faculty Economic and Management Sciences, G van der Westhuizen --- Unit for Business Mathematics and Informatics, Faculty Economic Sciences and Information Technology,This study used monthly balance sheet data, annual financial statement reports as well as other relevant data to calculate the technical and scale efficiency estimates (determined by Data Envelopment Analysis (DEA)) as well as the performance measurement of economic value... -
A model to compare firms’ efficiency in creating shareholders’ value
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Oberholzer --- WorkWell: Research Unit for Economic and Management Sciences,The first objective of this study is to develop a Data Envelopment Analysis (DEA) model to determine the relative technical efficiency of firms to create shareholders’ value. The second objective is to compare the technical efficiency with the profit ratios... -
Explaining the first-year academic performance of commerce academic development students: A statistical analysis
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: L C Smith --- Education Development Unit, Faculty of Commerce, J Pym --- Education Development Unit, Faculty of Commerce, V Ranchhod --- School of Economics,Academic development students’ academic performance in the first-year accounting degree is influenced by a range of personal and contextual variables. The objective of this paper is to conduct an exploratory investigation of a selection of these variables in order to... -
Taxation students’ perceptions of open-book assessment prior to the qualifying examination of South African chartered accountants
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: H du Preez --- Department of Economics and Management, C S du Preez --- Department of Economics and Management,In this study taxation students’ perceptions of open-book assessment, prior to their exposure to open-book assessment in the qualifying examination of South African chartered accountants, is explored. A focus group was conducted using the Interactive Qualitative Analysis methodology. In this... -
Taxation students’ perceptions of open-book assessment: a follow-up interactive qualitative analysis
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Hanneke Du Preez --- Department of Taxation, South AfricaStudents’ perceptions of a particular assessment type seems to influence their attitude to preparing for and taking the assessment. The literature suggests that open-book assessment allows a better understanding of the content of a subject area, thus better preparing students... -
Multiple interventions in a managerial accounting and financial management tutorial programme to enhance understanding
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Karen Bargate --- Department of Accounting, South AfricaThis paper emanates from a study which focused on Managerial Accounting and Financial Management (MAF) students’ experiences of learning in a Writing Intensive Tutorial (WIT) programme. Often students do not fully grasp the underlying disciplinary concepts and struggle to transfer... -
A comparison of multivariate discriminant and logistic regression analysis in the prediction of corporate failure in South Africa
Item type: Journal Article • Journal: De Ratione • Authors: P W Court --- Rhodes University, S E Radloff --- Rhodes University,The prediction of corporate failure, based on a specific model, is of vital importance to a large body of individuals. The two statistical methodologies which enjoy prominence in the literature when establishing these models are multivariate discriminant analysis and logistic... -
An investigation into the significance of certain firm-specific non-financial variables in a failure prediction model
Item type: Journal Article • Journal: De Ratione • Authors: P W Court --- Rhodes University,Most failure prediction models contain only financial ratios. There are nevertheless a number of firm-specific, non-financial ratios which could point to failure. This article attempts to Investigate the impact of some of these variables in a failure prediction model, it... -
Risk on The Johannesburg Stock Exchange
Item type: Journal Article • Journal: De Ratione • Authors: Mike Ward --- Lecturer in Finance and Quantitative Methods Faculty of Management,The Capital Asset Pricing Model (CAPM) provides a parsimonious method for estimating security returns. However, the strong influence of mining shares on the Johannesburg Stock Exchange (JSE) has complicated the use of the CAPM in South Africa and some researchers... -
Patterns in financial performance indicators of capital and labour intensive enterprises during an upswing and a decline in the economic cycle
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: JZ Bloom --- Department of Business Management, IJ Lambrechts --- Department of Business Management, NJ le Roux --- Department of Statistics and Actuarial Science,The objective of this paper is to investigate patterns in the behaviour of various financial performance indicators for capital intensive (CI) and labour intensive (LI) enterprises during an upswing (1987–1989) and a decline (1990–1992) phase of the economic cycle, as... -
A review of the radiological imaging modalities of non-traumatic small bowel obstruction
Item type: Journal Article • Journal: South African Family Practice • Authors: Narisha Maharaj --- Department of Radiology, South Africa Bhugwan Singh --- Department of Surgery, South AfricaSmall bowel obstruction is a common clinical presentation that presents a diagnostic conundrum. Over the last 2 decades, there has been a paradigm shift in the radiological investigation of small bowel obstruction (SBO) and in the indication for and timing... -
The epistemology of AIDS in South Africa: lessons from three scenario projects
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Charl Swart --- School of Public Health, South Africa Pieter Fourie --- Department of Political Science, South AfricaThis article reviews the methodology of future scenario-building in the context of HIV and AIDS in Africa. It considers three scenario studies conducted in the past decade: UNAIDS (2005), Metropolitan Holdings (2006) and the AIDS Governance scenarios (2015). The article... -
The dimensionality of the Work Related Flow Inventory (WOLF): a South African study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ita Geyser --- School of Tourism and Hospitality Management, South Africa Madelyn Geldenhuys --- Industrial Psychology and People Management, South Africa Freddie Crous --- Industrial Psychology and People Management, South AfricaThe objective of this study was to validate and explore the factor structure of the Work-Related Flow Inventory (WOLF) as a measure of flow within the South African work context. The sample consisted of N = 415 employees from various organisations in... -
Influences on life aspirations among adolescents in a low-income community in Cape Town, South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Gaironeesa Hendricks [cor1] Shazly Savahl --- Department of Psychology, South Africa Kulthum Mathews --- Department of Psychology, South Africa Claudia Raats --- Department of Psychology, South Africa Labeeqah Jaffer --- Department of Psychology, South Africa Arnold Matzdorff --- Department of Psychology, South Africa Bianca Dekel --- Department of Psychology, South Africa Christelle Larke --- Department of Psychology, South Africa Tapiwa Magodyo --- Department of Psychology, South Africa Megan van Gesselleen --- Department of Psychology, South Africa Athena Pedro --- Department of Psychology, South AfricaThe aim of this study was to determine the influences on adolescents’ aspirations from a low-income community in Cape Town. A sequential mixed method exploratory design was used following two distinct phases. The qualitative phase comprised focus group interviews with... -
Analysis of Indigenous Chicken Marketing Participation Decisions: The Case of Producers from Makueni County, Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: M. O. D. Ayieko --- Department of Agribusiness Management and Trade, E. K. Bett --- Department of Agribusiness Management and Trade, L. W. Kabuage --- Department of Agricultural Resource Management,Indigenous chickens are important in Kenya for food security, income generation, employment and improved livelihoods. However, despite these benefits producers are constrained from participating in the high value markets. A purposive multi-stage sampling was used to sample 130 households from... -
Genetic variability in cowpea (Vigna unguiculata (L.) Walp.) genotypes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Abe S Gerrano --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Patrick O Adebola --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Willem S Jansen van Rensburg --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South Africa Sunette M Laurie --- Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute, South AfricaInformation on genetic variability among the existing cowpea genotypes will increase the efficiency of the cowpea improvement. Field experiments were conducted at the Agricultural Research Council–Roodeplaat Vegetable and Ornamental Plant Institute in South Africa, in 2011 and 2012, to estimate... -
Application of multivariate statistics and toxicity indices to evaluate the water quality suitability for fish of three rivers in the Kruger National Park, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: R Gerber --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Unit for Environmental Sciences and Management, South Africa NJ Smit --- Unit for Environmental Sciences and Management, South AfricaThe water quality of the Olifants, Letaba and Luvuvhu rivers within the Kruger National Park was assessed for their suitability to sustain fish populations. Since water quality assessments result in huge datasets, principal component analysis and an aquatic toxicity index... -
The evaluation of development projects. A South African anthropological perspective
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: RD Coertze --- Centre for Indigenous Law, South AfricaThe need to equate development with a process of self-directed westernisation in the present time is explained initially in this discussion. This is followed by a discussion on the involvement of the Ethnological Section of the former Department of Development... -
“He who pays the piper…”, the anomaly of custom and constitution local government and traditional leadership
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Michael de Jongh --- Department of Anthropology and Archaeology, South AfricaIn December 2003 the Traditional Leadership and Governance Framework Act 2003 (No 41 of 2003) was eventually promulgated. This was the culmination of an extended process of submissions Consultation releasing of a draft White Paper workshops activities of a White... -
The liminality of kidney failure in South African state hospitals
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Diana Gibson --- Department of Anthropology and Sociology,Experiences of patients attempting to gain access to dialysis in state health services in the Western Cape provide examples that illustrate the usefulness of Turner's work on liminality in relation to the South African healthcare system. The ritualised routines of... -
Psychobiography in psychology: Past, present, and future
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joseph G. Ponterotto --- Division of Psychological and Educational Services, USAThe present article reviews the history and emerging trends in the field of psychobiography. Five historical periods are highlighted: hagiography and pre-19th century study of lives; Freud and applied psychoanalysis; psychodynamic extensions and personology; modern multi-theoretical models; and psychobiography as... -
Stereotypical attitudes amongst black students at a rural historically black South African university
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cebile Mensele --- Industrial and Organisational Psychology, South Africa Kathryn Nel --- Department of Psychology, South Africa Elzabé C. Nel --- Industrial and Organisational Psychology, South Africa Larisa A Louw --- Industrial and Organisational Psychology, South AfricaThis study investigated stereotypical attitudes towards race amongst Black students (N=274) attending a historically Black South African university (females=62%; mean age of 22.15 years; SD=3.00 years). Data on group stereotyping by race were collected using a semi-structured questionnaire. The data... -
Retrospective analysis of patients with cancer of the cervix attending a radiotherapy outpatient department: experience from a university-based hospital in eastern Uttar Pradesh, India
Item type: Journal Article • Journal: Southern African Journal of Gynaecological Oncology • Authors: M Nandi --- Department of Radiation Oncology, India A Mandal --- Department of Radiotherapy and Radiation Medicine, Institute of Medical Sciences, India AK Asthana --- Radiotherapy and Radiation Medicine, Institute of Medical Sciences, IndiaObjective: A retrospective analysis of all patients with cancer of the cervix attending a radiotherapy outpatients department in a single unit from January 2005 to December 2006 was carried out to study their epidemiology, stage and status of presentation, compliance... -
Assessment of noise pollution from electricity generators in a high-density residential area
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nwasinachi U. Menkiti --- Centre for Environmental Management and Control, Nigeria Jonah C. Agunwamba --- Centre for Environmental Management and Control, NigeriaNoise pollution associated with household electricity generators is an emerging environmental degradation in many developing nations. The aim of this study is to evaluate noise pollution from the use of household electricity generators in a high-density residential area. A survey... -
Seasonal variation in the diet of Cape clawless otters (Aonyx capensis) in a marine habitat
Item type: Journal Article • Journal: African Zoology • Authors: M.J. Somers --- Department of Zoology, South AfricaSeasonal changes in the diet of Cape clawless otters Aonyx capensis feeding in the surf zone in False Bay, Western Cape Province, South Africa, were investigated by spraint (faecal) analysis. The most common prey species, during all seasons, was the... -
Otolith features and growth of juvenile Opsaridium microcephalum (Pisces: Cyprinidae) from the southwestern shoreline of Lake Malawi
Item type: Journal Article • Journal: African Zoology • Authors: Shinsuke Morioka --- Department of Aquaculture and Fisheries Science, Bunda College of Agriculture, MalawiSanjika, Opsaridium microcephalum, were collected from two sites (Nkhotakota and Chia) along the southwestern shoreline of Lake Malawi. The sagitta of the otolith was arrowhead-shaped with an obvious nucleus. Increments in the sagittae were observable until the bases of the... -
Life history traits of Bathyclarias nyasensis (Siluroidei) in Lake Malawi
Item type: Journal Article • Journal: African Zoology • Authors: E. Kaunda --- Department of Ichthyology and Fisheries Science, South Africa T. Hecht --- Department of Ichthyology and Fisheries Science, South AfricaLife history traits, including age, growth, reproduction and diet of Bathyclarias nyasensis from Lake Malawi were studied between December 1996 and November 1998. Owing to reabsorp tion of pectoral spines with increasing fish size, and the relatively low number of... -
The feeding habits of brown hyaenas (Hyaena brunnea) on a game ranch in Limpopo Province, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Nicole Burgener [AN0001] Markus Gusset --- Centre for Wildlife Management, South AfricaWe analysed prey remains, particularly hair, in 38 brown hyaena Hyaena brunnea scats from a game ranch in the Limpopo Province, South Africa. The brown hyaenas fed on a wide variety of mammals, supplementing their diet with insects and plant... -
Diets of Cape clawless otters at two South African coastal localities
Item type: Journal Article • Journal: African Zoology • Authors: W. Emmerson --- Department of Zoology, South Africa S. Philip --- Department of Zoology, South AfricaThe diet of the Cape clawless otter Aonyx capensis was investigated at the Dwessa Nature Re serve and Mkambati Nature Reserve on the Wild Coast, Eastern Cape Province, South Africa. Their diet was more varied at Mkambati (15 prey species)... -
Validation of growth zone deposition in otoliths of two large endemic cyprinids in Lake Gariep, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Henning Winker --- Department of Ichthyology and Fisheries Science, South Africa Bruce R. Ellender --- Department of Ichthyology and Fisheries Science, South Africa Olaf L.F. Weyl --- South African Institute for Aquatic Biodiversity, South Africa Anthony J. Booth --- Department of Ichthyology and Fisheries Science, South AfricaWe tested the hypothesis that growth zones in the astericus otoliths of smallmouth yellowfish (Labeobarbus aeneus) and Orange River mudfish (Labeo capensis) were deposited annually. Two methods, fluorochrome marking and edge analysis of otoliths were used. For fluorochrome marking, specimens... -
Institutional Factors Affecting Expansion within the East African Community: An Analysis of Managers’ Personal Stories
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Trey Sutton --- Robins School of Business, USA Jeremy C. Short --- Michael F. Price College of Business, USA Aaron F. McKenny --- College of Business Administration, USA Rebecca Namatovu --- Makerere University Business School, UgandaThis study investigates the roles of the regulative, normative, and cognitive institutional pillars as perceived obstacles and facilitators of internationalization within an integrated region. Integrated regions involve efforts to create institutional similarities among member nations and encourage intra-regional trade. These... -
Statistical assessment of maize leaf nutrient and yield relationships in rural agriculture in the Mbizana area, Eastern Cape province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Danie J Beukes --- Agricultural Research Council–Institute for Soil, South Africa Gcina G Jezile --- Agricultural Research Council–Institute for Soil, South Africa Thembisile C Mapumulo --- Agricultural Research Council–Institute for Soil, South Africa Thomas P Fyfield --- Agricultural Research Council–Institute for Soil, South AfricaA medium-term study was conducted under dry land to develop regression models to predict maize yield from leaf analyses for cost-effective fertiliser recommendations. Treatments consisted of lime, organic and inorganic fertiliser applications in a randomised complete block design with three... -
Predicting soil nitrogen content using narrow-band indices from Eucalyptus grandis canopies as proxy
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Thamsanqa Mzinyane --- University of KwaZulu-Natal, South Africa Jan van Aardt --- Rochester Institute of Technology, UK Fethi Ahmed --- University of Witswatersrand, South Africa Michael Gebreslasie --- School of Agriculture, Earth and Environmental Science, South AfricaOptimal fertiliser applications for sustainable forest stand productivity management, whilst protecting the environment, is vital. This study estimated soil nitrogen content using leaf-level narrow-band vegetation indices derived from a hand-held 350-2 500 nm spectroradiometer. Leaf-level spectral data were collected and subjected... -
Sex determination of African Penguins Spheniscus demersus using bill measurements: method comparisons and implications for use
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kate J Campbell --- Animal Demography Unit, Department of Biological Sciences, South Africa Danielle Farah --- School of Biological Sciences, UK Sarah Collins --- School of Biological Sciences, UK Nola J Parsons --- Southern African Foundation for the Conservation of Coastal Birds, South AfricaAfrican Penguins Spheniscus demersus are sexually dimorphic; on average, males are larger than females but measurements overlap making sex determination difficult through observations alone. We developed a discriminant function, using bill length and depth from a sample of birds sexed... -
The exploratory and confirmatory factor analyses of two subjective career success instruments
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Eileen Koekemoer --- Department of Human Resource Management, South Africa Jan Alewyn Nel --- Department of Human Resource Management, South Africa Audine du Toit --- WorkWell Research Unit, South AfricaThis study investigated the psychometric properties of two subjective career success instruments within the South African context: Perceived Career Success (PCSS: Gattiker & Larwood, 1986) and Life Success Measures Scale (LSMS: Parker & Chusmir, 1992). Data were collected via a... -
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 AfricaA 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... -
Studying the Logone floodplain, Cameroon, as a coupled human and natural system
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Moritz --- Department of Anthropology, USA S Laborde --- Department of Anthropology, USA SC Phang --- Department of Evolution, Ecology, and Organismal Biology, USA M Ahmadou --- University of Maroua, Cameroon M Durand --- Byrd Polar Research Center, USA A Fernandez --- Byrd Polar Research Center, USA IM Hamilton --- Department of Evolution, Ecology, and Organismal Biology, USA S Kari --- Centre d'Appui a la Recherche et au Pastoralisme (CARPA), Cameroon B Mark --- Byrd Polar Research Center, USA P Scholte --- Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), Cameroon N Xiao --- Department of Geography, USA R Ziebe --- University of Maroua, CameroonAfrican floodplains are an excellent example of coupled human–natural systems because they exhibit strong interactions among multiple social, ecological, and hydrological systems. The intra-annual and interannual variations in seasonal flooding have direct and indirect impacts on ecosystems and human lives... -
Morphometric variation in the cutlassfish Trichiurus lepturus on the Kenyan coast: implications for stock identification and management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SM Mwakiti --- University of Eldoret, Kenya B Kaunda-Arara --- University of Eldoret, Kenya CM Mlewa --- Pwani University, Kenya R Ruwa --- Kenya Marine Fisheries Research Institute, KenyaMorphometric variation was used to study population structure of the cutlassfish Trichiurus lepturus on the Kenyan coast. In all, 16 morphometric measurements taken from 193 individuals from six sites were subjected to multivariate statistical analysis in order to determine possible... -
Bioprocessing of jackfruit (Artocarpus heterophyllus L.) pulp into wine: Technology, proximate composition and sensory evaluation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sandeep K. Panda --- Department of Biotechnology and Food Technology, Faculty of Science, South Africa Sunil K. Behera --- Department of Metallurgy, Faculty of Engineering and the Built Environment, South Africa Umesh C. Sahu --- Department of Botany, India Ramesh C. Ray --- ICAR-Regional Centre of Central Tuber Crop Research Institute, India Eugenie Kayitesi --- Department of Biotechnology and Food Technology, Faculty of Science, South Africa A.F. Mulaba-Bafubiandi --- Department of Metallurgy, Faculty of Engineering and the Built Environment, South AfricaMajor wineries are confined to using grapes as substrate, as a result of which other fruits, especially in the tropical zone, remain underutilised. A wine, from jackfruit (Artocarpus heterophyllus L.) pulp, was prepared by fermenting with wine yeast (Saccharomyces cerevisiae)... -
Measurement invariance across gender and ethnicity on the Emotional Quotient Inventory 2.0
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Casper J. J. Van Zyl --- Department of Psychology, South AfricaThis study investigated the measurement invariance of the Emotional Quotient Inventory 2.0 across gender and ethnic groups in South Africa. The sample consisted of 1 144 working adults (female = 49.8%. black = 36.2%, white = 29.8%; other = 34%;... -
Therapist experiences of equine-assisted psychotherapy in South Africa: A qualitative study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lucinda Johns --- School of Applied Human Sciences, Shaida Bobat --- School of Applied Human Sciences, Juanita Holder --- School of Applied Human Sciences,This study examined therapists’ perceptions and experiences of equine-assisted psychotherapy (EAP). Participants were 14 practising EAP therapists (females = 86%; male = 14%; age range 20 to 69 years) from across South Africa. They were interviewed utilising electronic interview media... -
Product diversification in South Africa’s commercial timber plantations: a way to mitigate investment risk
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Verena C Griess --- Department of Forest Resources Management, Faculty of Forestry, Canada Britta Uhde --- Department of Forest and Wood Science, South Africa Cori Ham --- Institute of Forest Management, Germany Thomas Seifert --- Institute of Forest Management, GermanyWe used the portfolio method to examine how a forest company can lower investment risk by producing a mix of timber products. We derived optimum combinations of pine (Pinus patula) saw timber production and eucalypt (Eucalyptus grandis) pulpwood production at... -
The nutritional status of continuous ambulatory peritoneal dialysis patients at a Johannesburg hospital
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: A. Abdhu --- Nephrology Unit, Aminu Kano Teaching Hospital, Nigeria N. Ladeira --- Department of Dietetics and Division of Nephrology, South Africa S. Naidoo --- Division of Nephrology, South Africa S. Naicker --- Division of Nephrology, South AfricaObjectives: To assess the nutritional status of continuous ambulatory peritoneal dialysis (CAPD) patients in our hospital using different assessment tools, and to assess the correlation between nutritional status and other parameters such as solute clearance. -
Development of predictive equations for total body water using the deuterium-dilution method as the gold standard in a population of asymptomatic HIV-positive Zulu women in South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: G. Kindra --- Department of Paediatrics and Child Health, Nelson R Mandela School of Medicine, A. Coutsoudis --- Department of Paediatrics and Child Health, Nelson R Mandela School of Medicine, L. Pillay --- Department of Chemistry, A. Kindness --- Department of Chemistry,Objectives: The study aimed to derive predictive equations for total body water determinations with bioelectrical impedance and anthropometric measurements in a population of asymptomatic human immunodeficiency virus (HIV) -positive Zulu women. -
Nutritional management of a complicated surgical patient by means of fistuloclysis
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: A. Du Toit --- Groote Schuur Hospital, Cape Town -
Barriers to the growth of small, micro and medium-sized business enterprises in the Vaal Triangle region of South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Zeleke Worku --- Tshwane University of Technology Business School, South AfricaThe purpose of the study was to identify and quantify factors that are responsible for the high rate of failure in newly established SMMEs in the Vaal Triangle region of Gauteng Province in South Africa. The study was based on... -
The Pareto principle and a hazard model as tools for appropriate scheduled maintenance in a manufacturing firm
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Johnson A. Fadeyi --- Industrial and Systems Engineering, USA Modestus O. Okwu --- Department of Mechanical Engineering, Nigeria Chinedum O. Mgbemena --- Department of Mechanical Engineering, Nigeria Kingsley C. Ezekiel --- Department of Maintenance Engineering and Asset Management, School of Mechanical, United KingdomThis study relates to a manufacturing firm that produces sanitary towels in Nigeria. The firm was confronted with operational challenge of high production downtime occasioned by frequent breakdown of the subsystems of the production system. This situation thus threatened its... -
Spatial patterns of encroaching shrub species under different grazing regimes in a semi-arid savanna, eastern Karoo, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Admore Mureva --- School of Life Sciences, South Africa David Ward --- School of Life Sciences, South AfricaWoody plant encroachment is increasing in arid and semi-arid regions of the world. We investigated the structure and fine-scale spatial pattern of encroaching species and how these patterns vary with different grazing regimes in semi-arid regions. In this study, we... -
Distribution and feeding modes of macrobenthos within three oceanographic feature areas of the KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CB Untiedt --- Oceanographic Research Institute, South Africa CF MacKay --- Oceanographic Research Institute, South AfricaThe composition and distribution of macrobenthic communities was investigated in three areas in the KwaZulu- Natal Bight, a section of shelf off the east coast of South Africa. Areas were pre-selected on the basis of three known oceanographic features, posited... -
Distribution of calcareous nannoplankton in surface sediments along the northern KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MN Ovechkina --- Geological Sciences, School of Agricultural, Earth and Environmental Sciences, South Africa MB Mostovski --- School of Life Sciences, South Africa R Uken --- Geological Sciences, School of Agricultural, Earth and Environmental Sciences, South AfricaThe coccolith assemblages from seafloor sediments over the inner shelf in the northern region of the KwaZulu- Natal Bight on the east coast of South Africa were identified and their distribution determined. In all, 29 Recent species and taxonomic groups,... -
A system-level modelling perspective of the KwaZulu-Natal Bight ecosystem, eastern South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: UM Scharler --- School of Life Sciences, South Africa RC van Ballegooyen --- Coastal Systems Research Group, South Africa MJ Ayers --- School of Life Sciences, South AfricaThe KwaZulu-Natal Bight comprises the only sizeable shelf region on the eastern coast of South Africa, and is influenced by both the Agulhas Current on its seaward side and rivers and estuaries on its landward side. Established knowledge of the... -
Efficacy of antimicrobial lock solutions in preventing catheter-related blood stream infection in haemodialysis patients: a systematic review and meta-analysis of prospective randomised controlled trials
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Ahmad Maifada Yakasai --- Infectious and Tropical Diseases Unit, Department of Medicine, Public Health and Diagnostic Institute, College of Medical Sciences, Nigeria Hamza Muhammad --- Infectious and Tropical Diseases Unit, Department of Medicine, Nigeria Garba Iliyasu --- Infectious and Tropical Diseases Unit, Department of Medicine, Nigeria Aisha Muhammad Nalado --- Aminu Kano Teaching Hospital, Nigeria Mahmood Muhammad Dalhat --- Infectious and Tropical Diseases Unit, Department of Medicine, Nigeria Zaiyad Garba Habib --- Department of Medicine, Nigeria Farouk Daiyabu --- Infectious and Tropical Diseases Unit, Department of Medicine, Nigeria Chinagozi Precious Edwin --- Department of Microbiology, Nigeria Musa Baba Maiyaki --- Aminu Kano Teaching Hospital, Nigeria Daiyabu Alhaji Ibrahim --- Aminu Kano Teaching Hospital, NigeriaBackground: Catheter-related blood stream infection (CRBSI) contributes to morbidity and mortality among patients on haemodialysis (HD). We carried out a systematic review and meta-analysis to assess the efficacy of antimicrobial lock solutions (ALS) in preventing CRBSI. Method: Electronic search of... -
The influence of transformational leadership on organisational citizenship behaviour in a South African combat military unit
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Oscar Sechudi --- South African Army, South Africa Benny Olivier --- Department of Industrial and Organisational Psychology, South AfricaThis study investigated perceived individual transformational leadership (TL) to influence behaviours on follower organisational citizenship behaviour (OCB) in a South African combat military unit. A sample of 300 of 567 military followers (males = 78%; black Africans = 82%) completed... -
Exploring a sample of university students’ perceptions of menstruation
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kulthum Ismail --- Department of Psychology, South Africa Athena Pedro --- Department of Psychology, South Africa Michelle Andipatin --- Department of Psychology, South AfricaThis study aimed to explore how a sample of young South African women constructed their perceptions of menstruation. The sample comprised 16 racially/ethnically diverse female university students (blacks = 4, whites = 2, coloured = 8; Christians = 11; Muslims... -
Postoperative neuromuscular function following non-depolarising muscle blockade in patients at Inkosi Albert Luthuli Central Hospital, Durban
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: JRR Invernizzi --- Discipline of Anaesthesiology & Critical Care, South Africa PD Gopalan --- Discipline of Anaesthesiology & Critical Care, South AfricaBackground: Residual neuro-muscular blockade after the end of general anaesthesia may occur when non-depolarising muscle relaxant (NDMR) drugs are used. Train-of-four (TOF) stimulation is used to quantify the degree of residual paralysis, with a TOF ratio of less than 0.9... -
Etmopterus alphus n. sp.: a new lanternshark (Squaliformes: Etmopteridae) from the south-western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: DA Ebert --- Pacific Shark Research Center, USA N Straube --- Bavarian State Collection of Zoology, Germany RW Leslie --- Branch: Fisheries Management, South Africa S Weigmann --- University of Hamburg, GermanyA new species of lanternshark, Etmopterus alphus (Squaliformes: Etmopteridae), is described from the south-western Indian Ocean. The new species resembles other members of the ‘Etmopterus lucifer’ clade in having linear rows of dermal denticles and most closely resembles E. molleri... -
Community ecology of the metazoan parasites of snoek Thyrsites atun (Euphrasen, 1791) (Perciformes: Gempylidae) off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MAI Nunkoo --- Department of Biological Sciences, South Africa CC Reed --- Department of Biological Sciences, South Africa SE Kerwath --- Department of Biological Sciences, South AfricaThe parasite assemblage of snoek Thyrsites atun, a commercially important fish in the Benguela system, was examined over a one-year period. In all, 16 parasite taxa including eight new host records (Bolbosoma vasculosum, Caligus coryphaenae, Caligus dakari, Corynosoma australe, Hatschekia... -
Experiences of father carers of children with Autism Spectrum Disorder: An exploratory study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Antoinette Pottas --- Department of Psychology, South Africa Athena Pedro --- Department of Psychology, South AfricaThis study aimed to explore the carer experiences of fathers of children with Autism Spectrum Disorder (ASD). A total of eight South African fathers between the ages of 38 and 45 years were the interview informants. They cared for at... -
Trophic ecology and persistence of invasive silver carp Hypophthalmichthys molitrix in an oligotrophic South African impoundment
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Lübcker --- Department of Zoology and Entomology, South Africa J Dabrowski --- Department of Zoology and Entomology, South Africa TA Zengeya --- Department of Zoology and Entomology, South Africa PJ Oberholster --- Council for Scientific and Industrial Research (CSIR), South Africa G Hall --- South Africa Stable Isotope Laboratory, South Africa S Woodborne --- South Africa Stable Isotope Laboratory, South Africa MP Robertson --- Centre for Invasion Biology, Department of Zoology and Entomology, South AfricaThe alien invasive silver carp Hypophthalmichthys molitrix established a self-sustaining feral population in an oligotrophic impoundment, Flag Boshielo Dam, in South Africa. The ability of this population to persist in a dam with low algal biomass (median annual suspended chlorophyll... -
First report of cyanobacterial diversity and microcystins in a Microcystis
strain from Sidi Boughaba, a Moroccan coastal lagoon Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Douma --- Department of Biology, Laboratory of Biology and Biotechnology of Microorganisms, N Manaut --- Health and Environment Unit, Provincial Direction of the Ministry of National Education, Morocco B Oudra --- Department of Biology, Laboratory of Biology and Biotechnology of Microorganisms, M Loudiki --- Department of Biology, Laboratory of Biology and Biotechnology of Microorganisms,The cyanobacterial diversity of Sidi Boughaba, a Moroccan coastal lagoon and Ramsar site, was evaluated and its potentially toxic species were isolated and characterised. This study was the first time that cyanobacterial diversity and cyanotoxin production have been characterised in... -
Problem-based learning in the first or second language: Does it make a difference?
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Dirk Humalda --- Stenden Hotel Management School, The Netherlands Wichard Zwaal --- Stenden Hotel Management School, Academy of International Hospitality Research, The NetherlandsProblem-based learning (PBL) is the key didactic approach in the curriculum of the Stenden Hotel Management School. Real-world problems are used to activate prior knowledge and to trigger a learning process aimed at expanding and elaborating students’ understanding and competences... -
Phenotypic variability in larvae of two species of Mediterranean spadefoot toad: an approach using linear and geometric morphometrics
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Daniel Escoriza --- , , Spain Jihène Ben Hassine --- , , TunisiaTwo species of the genus Pelobates occur in the western Mediterranean region: Pelobates cultripes, in the Iberian Peninsula and southern France, and Pelobates varaldii, endemic in northwestern Morocco. These two species form a monophyletic clade within the Eurasian Pelobates and... -
Determinants of external tax compliance costs: Evidence from South Africa
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Sharon Smulders --- Taxation Department, South Africa Madeleine Stiglingh --- Taxation Department, South Africa Riel Franzsen --- African Taxation Institute, University of Pretoria, South Africa Lizelle Fletcher --- Department of Statistics, South AfricaSmall businesses tend to rely on external service providers (tax practitioners, accountants, lawyers and bookkeepers) for assistance with their tax affairs. Payments to external service providers clearly affect a small business’s tax compliance costs. This study uses multiple regression analyses... -
Morphological variation in the Sabota Lark Calendulauda sabota in southern Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Sean M Marr --- Department of Biodiversity, South Africa Mmatjie L Mashao --- Department of Biodiversity, South Africa G Derek Engelbrecht --- Department of Biodiversity, South AfricaSeparation of the eight southern African subspecies of Sabota Lark Calendulauda sabota into thick-billed and slender-billed groups has been proposed. This study used biometric data obtained from museum skins in South Africa to evaluate morphological variation in the subspecies as... -
Genotypic variation and correlations between yield system traits and yield components in African landraces of bambara groundnut
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Olusanya C Alake --- Department of Plant Breeding and Seed Technology, Nigeria Moninuola A Ayo-Vaughan --- Department of Plant Breeding and Seed Technology, NigeriaGenetic information on a variety of traits contributing to grain yield is required to improve many crops. However, this information is lacking in bambara groundnut (Vigna subterranea (L.) Verdc.). To this end, 24 African bambara groundnut landraces were investigated for... -
Towards a new model to benchmark firms’ operating efficiency: A data envelopment analysis approach
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Merwe Oberholzer --- Accounting Sciences, South Africa Dawie Mong --- Accounting Sciences, South Africa Jan van Romburgh --- Accounting Sciences, South AfricaThe purpose of the study was to construct two similar data envelopment analysis (DEA) models. The first contains only published accounting-based data and the second added weighted average cost of capital (WACC), a primary market-based determinant, as an input variable... -
“I am making it without you, dad”: Resilient academic identities of black female university students with absent fathers: An exploratory multiple case study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ncamisile Thumile Zulu --- Human Sciences Research Council, South Africa Nicholas Munro --- Discipline of Psychology, School of Applied Human Sciences, South AfricaThis study explored the resilient academic identity constructions of two black father-absent females who were academically successful postgraduate students at a South African University. Using resilience theory and an African metaphysical framework, the study highlights the conversational devices that these... -
Characterisation of pigeon pea (Cajanus cajan) landraces grown in two climatic zones in KwaZulu-Natal province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lindah L Hluyako --- Discipline of Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Alfred O Odindo --- Discipline of Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Paramu Mafongoya --- Discipline of Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Nkanyiso J Sithole --- Discipline of Crop Science, School of Agricultural, Earth and Environmental Sciences, South Africa Lembe S Magwaza --- Discipline of Crop Science, School of Agricultural, Earth and Environmental Sciences, South AfricaPigeon pea is an important legume in arid and semi-arid areas of the Sub-Saharan Africa. Knowledge of adaptation characteristics of genotypes would significantly enhance its production in diverse environments of the region. Field experiments were conducted at two sites, namely... -
Construct validation of the Zimbardo Time Perspectives Inventory
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nico Keyser --- Department of Economics, South AfricaThe aim of the present study was to validate the factorial structure and psychometric properties of the Zimbardo Time Perspectives Inventory (ZTPI) in a South African student sample. A total of 200 students completed the ZTPI. The sample comprised 58... -
The global innovation networks and global production networks of firms: Conceptualization and implication
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ju Liu --- Department of Urban Studies, SwedenToday’s developments in the literature about the global networks of firms emphasize not only global production networks (GPNs) but also global innovation networks (GINs). However, the differences, commonalities and interaction between firms’ GINs and GPNs have not been theoretically and... -
Physiological response to angling of Africa’s premier freshwater angling species, the tigerfish Hydrocynus vittatus
Item type: Journal Article • Journal: African Zoology • Authors: Ruan Gerber --- Water Research Group, Unit for Environmental Sciences and Management, South Africa Glyn Howatson --- Water Research Group, Unit for Environmental Sciences and Management, South Africa Richard Greenfield --- Centre for Aquatic Research, Department of Zoology, South Africa Ina Wagenaar --- Centre for Aquatic Research, Department of Zoology, South Africa Nico Smit --- Water Research Group, Unit for Environmental Sciences and Management, South AfricaAngling fraternities widely promote catch-and-release (C&R) as a fisheries management tool. This study aimed to determine the physiological response of Africa’s premier freshwater angling species, the tigerfish Hydrocynus vittatus, to C&R angling in the Okavango Delta, Botswana. Standard angling techniques... -
Photosynthesis versus irradiance relationships in the Atlantic sector of the Southern Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Thomalla --- Ocean Systems and Climate Group, South Africa E Kean --- Biological Sciences Department, South Africa M Lucas --- Biological Sciences Department, South Africa M-J Gibberd --- Biological Sciences Department, South Africa R Barlow --- Department of Oceanography, South AfricaEleven incubation experiments were conducted in the South Atlantic sector of the Southern Ocean to investigate the relationship between new production (ρNO–3), regenerated production (ρNH+4), and total carbon production (ρC) as a function of varying light. The results show substantial... -
Spatial patterns and determinants of fertility levels among women of childbearing age in Nigeria
Item type: Journal Article • Journal: South African Family Practice • Authors: Oluwayemisi O Alaba --- Department of Statistics, Nigeria Olusanya E Olubusoye --- Department of Statistics, South Africa JO Olaomi --- Department of Statistics, South AfricaBackground: Despite aggressive measures to control the population in Nigeria, the population of Nigeria still remains worrisome. Increased birth rates have significantly contributed to Nigeria being referred to as the most populous country in Africa. This study analyses spatial patterns... -
Ecology and behaviour of Palm-nut Vultures Gypohierax angolensis in the Bijagós Archipelago, Guinea-Bissau
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Camilo Carneiro --- Department of Biology and CESAM, Portugal Mohamed Henriques --- Faculty of Sciences, Portugal Castro Barbosa --- Institute of Biodiversity and Protected Areas of Guinea-Bissau, Guinea-Bissau Quintino Tchantchalam --- Institute of Biodiversity and Protected Areas of Guinea-Bissau, Guinea-Bissau Aissa Regalla --- Institute of Biodiversity and Protected Areas of Guinea-Bissau, Guinea-Bissau Ana R Patrício --- Centre for Ecology and Conservation, UK Paulo Catry --- MARE – Marine and Environmental Sciences Centre, PortugalPopulations of many vulture species have undergone substantial declines. In Africa, 82% are threatened and although research on vultures has increased, the biology and ecology of several species is still poorly known. The Palm-nut Vulture Gypohierax angolensis has peculiar ecological... -
Selection of drought-tolerant tef (Eragrostis tef) genotypes using drought tolerance indices
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mizan Tesfay Abraha --- African Centre for Crop Improvement, South Africa Hussein A Shimelis --- African Centre for Crop Improvement, South Africa Mark D Laing --- African Centre for Crop Improvement, South Africa Kebebew Assefa --- Debre-Zeit Agricultural Research Centre, EthiopiaDrought stress is one of the major abiotic constraints affecting production and productivity of tef (Eragrostis tef). Genetic resources and selection methodologies are among the prerequisites to improve the efficiency of breeding for drought tolerance. The objectives of this study... -
Mixed-method approaches to studying innovation networks in developing countries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Christian Omobhude --- Institute of Management of Technology, Taiwan Shih-Hsin Chen --- Institute of Management of Technology, TaiwanExisting literature maintains that innovation networks would enhance the development of firms and industry. However, what remains less clear is the methodologies applied in each context and what sort of barriers occur during data collection. Through reviewing the methodologies adopted... -
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 AfricaScholarly 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,... -
Evaluating fit of the Prospective and Retrospective Memory Questionnaire (PRMQ) in a Nigerian adult population
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Philip C. Mefoh --- Department of Psychology, Nigeria Lawrence E. Ugwu --- Department of Psychology, Nigeria Agnes E. Okafor --- Department of Social Work, NigeriaThis study aimed to evaluate the latent structure of the Prospective and Retrospective Memory Questionnaire (PRMQ) and to estimate the reliability and validity of scores from the measure in a Nigerian adult population (N = 758; age range = 18... -
Price gaps: Another market anomaly?
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Guglielmo Maria Caporale --- Brunel University London, CESifo and DIW Berlin, Alex Plastun --- Sumy State University, UkraineThis paper analyses price gaps in financial markets, also known as trading, opening, common, stock or morning gaps – all these terms being used to indicate that the current day’s opening price is not the same as the previous day’s... -
Prospective conceptual model of Tomatis® method effects on students’ self-regulation
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Annelize Bonthuys --- Community Psychosocial Research (COMPRES), Department of Psychology, South Africa Karel Botha --- Community Psychosocial Research (COMPRES), Department of Psychology, South Africa Anneke Stols --- African Unit of Transdisciplinary Health Research (AUTHeR), South AfricaThis study aimed to develop a preliminary conceptual model that explains the perceived effect of the Tomatis® method on university students’ self-regulation for study course learning. Seven beginning graduate students (6 female; 3 black, 4 white) with a large South... -
Authentic leadership influences on organisational commitment in a South African state hospital
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Veronica Hlongwane --- University of South Africa, South Africa Benny Olivier --- University of South Africa, South AfricaThis study investigated the influence of authentic leadership (AL) on employee organisational commitment (OC) in a South African state hospital. A convenience sample of 222 employees (female = 81%; black = 82%) completed the Authentic Leadership Questionnaire on their perceptions... -
The fathers of Destiny: Representations of fatherhood in a popular South African magazine
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bertrand Leopeng --- Department of Psychology, South Africa Malose Langa --- Department of Psychology, South AfricaThis study utilised textual analysis to characterise the representation of fatherhood in the eight issues of Destiny Man magazine published in 2014. Stories that pertained to fatherhood and that were related to aspects of contemporary family construction, work, and identity... -
Preliminary evaluation of seed and germination traits in cowpea (Vigna unguiculata) genotypes
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Abe S Gerrano --- Agricultural Research Council–Vegetable and Ornamental Plant Institute, South Africa Willem S Jansen van Rensburg --- Agricultural Research Council–Vegetable and Ornamental Plant Institute, South Africa Patrick O Adebola --- Agricultural Research Council–Vegetable and Ornamental Plant Institute, South AfricaCowpea is a valuable crop for subsistence farmers in South Africa. Seed quantitative traits and germination parameters are important for good establishment of the crop, therefore the variation for these traits were determined for 44 cowpea genotypes. A field experiment... -
A South African softwood sawtimber supply chain case study
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Pierre A Ackerman --- Department of Forest and Wood Science, South Africa Elizabeth A van der Merwe --- Department of Forest and Wood Science, South Africa Reino E Pulkki --- Department of Forest and Wood Science, South AfricaSupply chain management principles were analysed by investigating the effects of smaller-scale and incremental interventions in a forest-to-mill value chain on financial returns and forest resource use in an Eastern Cape case study area. Three previous studies provided input by... -
Modelling the impacts of semi-intensive aquaculture on the foodweb functioning of a Nile Delta coastal lake
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Bocci --- Department of Environmental Sciences, Informatics and Statistics, Italy R Pastres --- Department of Environmental Sciences, Informatics and Statistics, Italy S Kholeif --- National Institute of Oceanography and Fisheries (NIOF), Egypt D Dalla Barba --- Department of Environmental Sciences, Informatics and Statistics, Italy D Brigolin --- Department of Environmental Sciences, Informatics and Statistics, ItalyNutrient loadings are an important component of aquaculture impacts as they can lead to cascade effects at the ecosystem level. An evaluation of these effects on foodweb functioning is presented and discussed for the case study of Lake Burullus in... -
Use of otolith-shape analysis for stock discrimination of Boops boops along the Algerian coast (southwestern Mediterranean Sea)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Ider --- Laboratoire de Zoologie Appliquée et d’Ecophysiologie Animale, Faculté des Sciences de la Nature et de la Vie, Algeria Z Ramdane --- Laboratoire de Zoologie Appliquée et d’Ecophysiologie Animale, Faculté des Sciences de la Nature et de la Vie, Algeria K Mahé --- Laboratoire Ressources Halieutiques de Boulogne, France JL Duffour --- Laboratoire Ressources Halieutiques de Boulogne, France M Bacha --- Laboratoire d’Océanologie et de Géosciences – Centre National de la Recherche Scientifique (CNRS), France R Amara --- Laboratoire d’Océanologie et de Géosciences – Centre National de la Recherche Scientifique (CNRS), FranceOtolith-shape analysis was examined to determine its utility for biological stock identification of the bogue Boops boops along the Algerian coast of the Mediterranean Sea. The outlines of 179 sagittal otolith pairs from fish collected at three locations (Oran, Bejaia... -
Analysis of bycatch in the South African midwater trawl fishery for horse mackerel Trachurus capensis based on observer data
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JR Reed --- Marine Research Institute, Department of Biological Sciences, South Africa SE Kerwath --- Marine Research Institute, Department of Biological Sciences, South Africa CG Attwood --- Marine Research Institute, Department of Biological Sciences, South AfricaThe South African midwater trawl fishery targets adult horse mackerel Trachurus capensis. The bulk of the catch is taken by a single freezer-trawler, the biggest fishing vessel operating in South African waters. As fishing takes place off the south coast... -
Hepatitis C virus seroprevalence among haemodialysis patients, sickle cell patients and blood donors at a tertiary hospital in Yaounde, Cameroon
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Therese Ndomgue --- Department of Microbiology/Immunology, Cameroon Michel Kengne --- Department of Microbiology/Immunology, Cameroon Patrick Achiangia Njukeng --- Department of Plant Biology, Cameroon Valentine Ngum Ndze --- Metabiota Cameroon, Cameroon Damien Nota Anong --- Department of Microbiology and Parasitology, Cameroon Tracy Madimabi Masebe --- Department of Life and Consumer Sciences, South Africa Ubald Tamoufe --- Metabiota Cameroon, Cameroon Anastasia Yenban Bongajum --- Service for the prevention of mother-to-child transmission of HIV (PMTCT), Cameroon Daniel Ter Goon --- Department of Nursing Sciences, South Africa Julius Mbekem Nwobegahay --- Military Health Research Center (CRESAR), CameroonBackground: Hepatitis C virus (HCV) infection is a serious health care problem in haemodialysis patients, sickle cell patients and blood donation in Africa. However, there is a paucity of information about this in Cameroon. This study presents the prevalence of... -
The ‘suitcase hypothesis’: Can entrainment of meroplankton by eddies provide a pathway for gene flow between Madagascar and KwaZulu-Natal, South Africa?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Ockhuis --- Cape Peninsula University of Technology, South Africa JA Huggett --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa G Gouws --- African Coelacanth Ecosystem Programme (ACEP), South Africa C Sparks --- Cape Peninsula University of Technology, South AfricaSimilarities in the marine fauna found off the coasts of southern Madagascar and KwaZulu-Natal Province (KZN), South Africa, led to the development of the ‘suitcase project,’ with the aim of establishing whether eddies that form off southern Madagascar may package... -
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 AfricaThe 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... -
Genotypic variation in tree growth and selected flavonoids in leaves of Cyclocarya paliurus
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Yanni Cao --- College of Forestry, China Bo Deng --- College of Forestry, China Shengzuo Fang --- College of Forestry, China Xulan Shang --- College of Forestry, China Xiangxiang Fu --- College of Forestry, China Wanxia Yang --- College of Forestry, ChinaCyclocarya paliurus is a valuable medicinal tree species in China. However, limited information is available on its genotype selection and cultivation for improvement of growth and health-promoting phytochemicals. To contribute to improved knowledge of the potential use of the species,... -
Exploratory factor analysis on drivers of firm’s growth among construction SMEs in Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: B. M. Arthur-Aidoo --- Sustainable Human Settlement and Construction Research Centre, Faculty of Engineering and the Built Environment, South Africa C. O. Aigbavboa --- Sustainable Human Settlement and Construction Research Centre, Faculty of Engineering and the Built Environment, South Africa W. D. Thwala --- Sustainable Human Settlement and Construction Research Centre, Faculty of Engineering and the Built Environment, South AfricaThe growth of construction SMEs is imperative if an economy is to develop. Numerous factors influence the growth of construction SMEs due to the nature of their operation. Their growth can also be driven their activities which can be classified... -
The ‘new’ bricks-and-mortar store: An evaluation of website quality of online grocery retailers in BRICS countries
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Alicia Neva Weber --- Department of Entrepreneurship, Supply Chain, Transport, Tourism and Logistics Management, South Africa Johanna Adolphina Badenhorst-Weiss --- Department of Entrepreneurship, Supply Chain, Transport, Tourism and Logistics Management, South AfricaBackground: Online grocery retailing holds potentially fruitful outcomes for retailers and consumers. However, both retailers and consumers have been slow to adopt and participate in this form of grocery retailing, especially in countries with emerging economies such as those in... -
Share-based incentives for South African CEOs: Trends 2002−2015
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Gretha Steenkamp --- School of Accountancy, South Africa Nicolene Wesson --- Business School, South AfricaShare-based incentives, which theoretically align executive and shareholders’ interests (agency theory), comprise a significant portion of executive remuneration. Detractors propose that such incentives could allow rent extraction (managerial power theory). To enable proper governance, stakeholders (both shareholders and regulators) need... -
Psychometric validation of an Organisational Performance Questionnaire (OPQ) based on the Burke-Litwin model
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Benny Olivier --- University of South Africa, South AfricaThis study reports the findings on the development and validation of an Organisational Performance Questionnaire (OPQ) based on the Burke-Litwin model. Respondents were 398 employees from various public and private sector organisations in South Africa, consisting of different genders (male... -
Opinions of South African dietitians on fistuloclysis as a treatment option for intestinal failure patients
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: A Du Toit --- Division of Human Nutrition, South Africa ABT Boutall --- Department of Surgery, R Blaauw --- Division of Human Nutrition, South AfricaIntroduction: Intestinal failure is the consequence of diverse aetiologies and pathophysiological causes. Fistuloclysis is an effective means of nutritional support to selected intestinal failure patients. This study aimed to investigate the management of adult intestinal failure patients in hospitals in... -
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, GhanaYam (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,... -
Farm household typology and adoption of climate-smart agriculture practices in smallholder farming systems of southern Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Clifton Makate --- International Centre for Tropical Agriculture (CIAT), Zimbabwe Marshall Makate --- Department of Economics, USA Nelson Mango --- International Centre for Tropical Agriculture, UgandaEnhancing adoption rates of climate-smart agriculture practices and their impact on livelihoods requires promotional persistence, complemented by a thorough socioeconomic analysis that recognizes the heterogeneity of smallholder farmers. Farm typologies are a useful tool to assist in understanding and unpacking... -
Effects of seasonal variation, group size and sex on the activity budget and diet composition of the addax antelope
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Hicham Seri --- Laboratoire d’Elevage et de la Faune Sauvage, Tunisia Mohsen Chammem --- Laboratoire d’Elevage et de la Faune Sauvage, Tunisia Luis MM Ferreira --- CITAB-Centre for the Research and Technology of Agro-Environment and Biological Sciences, Portugal Marwa Kechnebou --- Laboratoire d’Elevage et de la Faune Sauvage, Tunisia Touhami Khorchani --- Laboratoire d’Elevage et de la Faune Sauvage, Tunisia Severiano R Silva --- CECAV-Animal Science Department, PortugalBehaviour and diet composition are critical elements in conservation biology within the scope of reintroduction programs. Here we focused on addax (Addax nasomaculatus), a Critically Endangered antelope species, in the Jbil National Park, Tunisia. In this study, we advanced the... -
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 AfricaWe 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... -
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, NigeriaThe 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... -
Structure and Management of Formal and Informal Business Activities in Entrepreneurial Family and Small Firms in Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Moses N. Kiggundu --- Sprott School of Business, Carleton University, Canada Siva P. Pal --- Sprott School of Business, Carleton University, CanadaThis article focuses on the meso-micro levels of entrepreneurial family-owned and small firms operating in Africa’s informal economy. It examines how these firms manage formal and informal business activities, and how entrepreneurs manage business risks associated with market imperfections. After... -
Deployment factors for mobile business intelligence in developing countries small and medium enterprises
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Tope Samuel Adeyelure --- Department of Informatics, South Africa Billy Mathias Kalema --- Department of Informatics, South Africa Kelvin J. Bwalya --- School of Consumer Intelligence and Information Systems, South AfricaData are more rapidly generated than they can be digested and consumed in real time due to the increased mobility and automation of activities of small and medium enterprises (SMEs). These challenges could be avoided if SMEs in developing countries... -
Development of energy benchmarking protocol for commercial banks, Lagos state, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: T. O. Akinbulire --- Department of Electrical/Electronic Engineering, Nigeria P. O. Oluseyi --- Department of Electrical/Electronic Engineering, Nigeria O. M. Babatunde --- Department of Electrical/Electronic Engineering, Nigeria A. E. Ayegbajeje --- Daystar Power Solutions, NigeriaEnergy consumption is a central factor taken into consideration as far as management decisions are concerned in any firm and the same goes for the banking industry. More importantly is the extent to which firms consume energy efficiently. In the... -
Corruption, transaction costs, and innovation in Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Laura Barasa --- School of Economics, KenyaThis paper examines the relationship between corruption, transaction costs as measured by asset specificity, and innovation in Africa. We hypothesize that in the context of developing countries in Africa, corruption is positively associated with innovation. In addition, we hypothesize that... -
Sensitivity of selected chemical and biological soil quality parameters to tillage and rotational cover cropping at the Zanyokwe Irrigation Scheme, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Arnold N Njaimwe --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pearson NS Mnkeni --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pardon Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Isaiah IC Wakindiki --- Department of Agronomy, Faculty of Science and Agriculture, South AfricaSustainable management of soils requires knowledge of the impact of agronomic practices such as tillage and crop rotation on soil quality. The objective of this study was to identify soil chemical and biological soil attributes with high sensitivity to tillage... -
Heavy metal concentrations in water and sediment of the Steelpoort River, Olifants River System, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Addo-Bediako --- Department of Biodiversity, South Africa K Matlou --- Department of Biodiversity, South Africa E Makushu --- Department of Biodiversity, South AfricaSteelpoort River has been adversely affected by human activities in the catchment. Water and sediment quality of the river was assessed in 2015. The concentrations of some of the metals in water were found to be high and exceeded the... -
The occurrence of mycotoxigenic fungi in abalone feed in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MR Greeff-Laubscher --- , South Africa I Beukes --- , South Africa GJ Marais --- , South Africa K Jacobs --- , South AfricaAbalone feed in South Africa is mainly produced from locally sourced grains and has soy or fishmeal as a protein source. Contamination with fungal species associated with grain-based animal feed is, therefore, a predictable risk. Various Fusarium, Penicillium and Aspergillus... -
Land Cover Change Impacts on Beef Cattle Productivity under Changing Climate: Case of Ilemela and Magu Districts, Tanzania
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Siwa Ernest Nkya --- Directorate of Forest Production Research, Tanzania Martin Hagai --- Department of Geoinformatics, Tanzania Japhet Joel Kashaigili --- Department of Forest Resources Assessment and Management, TanzaniaThe study focused on contributing to the spatial knowledge of the impacts of land cover changes on beef cattle production under a changing climate in rangelands of the Lake Victoria Basin (LVB), so as to establish a strategy for improving... -
The bionomics of whitegrub species (Coleoptera: Scarabaeidae) affecting commercial forestry re-establishment in representative areas of the South African summer-rainfall region
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Derian Echeverri-Molina --- Department of Biology, School of Science and Technology, Sefako Makgatho Health Sciences University, South Africa Prem Govender --- Research and Postgraduate Studies Directorate, Sefako Makgatho Health Sciences University, South AfricaSouth African commercial forestry plants mainly Eucalyptus, Pinus and Acacia species. Invertebrate pests play a significant role in the establishment phase of these exotic trees. Whitegrubs, in particular, are known to affect seedling survival during this period. Their pest status... -
The behavioural self-regulation strategies of Indian South African university students: An exploratory study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacob J. P. Le Grange --- School of Psychosocial Health / Community Psychosocial Research (COMPRES), South Africa Karel F. H. Botha --- School of Psychosocial Health / Community Psychosocial Research (COMPRES), South AfricaThis study explored the race-related self-regulation strategies of eight Indian South African university students (females: n = 4) attending a historically white university. Interactive qualitative analysis of their race-related experiences revealed that the students felt that they had been judged... -
Spatial variation in meristic and morphometric characteristics of sardine Sardinops sagax around the coast of southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Groenewald --- Marine Research Institute and Department of Biological Sciences, South Africa CL Moloney --- Marine Research Institute and Department of Biological Sciences, South Africa CD van der Lingen --- Marine Research Institute and Department of Biological Sciences, South AfricaSpatial variability in phenotypic characteristics within a fish population may be used to infer the existence of multiple stocks, and knowledge of the population structure of exploited species is important for their sustainable management. In this study we investigated geographic... -
Landscape pattern changes over 25 years across a hotspot zone in southern Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Igor José Malfetoni Ferreira --- Remote Sensing Division, Brazil Gabriel da Rocha Bragion --- Remote Sensing Division, Brazil José Hilário Delconte Ferreira --- Biodiversity and Conservation of Nature Department, Brazil Evanilde Benedito --- Center for Research in Limnology, Ichthyology and Aquaculture, Biology Department, Brazil Edivando Vitor do Couto --- Biodiversity and Conservation of Nature Department, BrazilForest fragmentation caused by human activities has many implications for natural landscapes, such as habitat reduction and the loss of biodiversity. This study investigated the temporal fragmentation process of forest remnants in a strongly agro-industrialised region in southern Brazil over... -
Rhythm and connection on Rissik Street: Reflecting on public space research in inner-city Johannesburg
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Temba John Dawson Middelmann --- Town and Regional Planning, South AfricaThis paper explores how entangled layers of use and contingencies of open spaces in downtown Johannesburg, South Africa, relate to their structural, material and symbolic aspects. Reflecting on research at Pieter Roos Park, Constitution Hill and Gandhi Square, this paper... -
Analyses of mathematical models for city population dynamics under heterogeneity
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: O.C. Collins --- Institute of Systems Science, South Africa T.S. Simelane --- Institute of Systems Science, South Africa K.J. Duffy --- Institute of Systems Science, South AfricaIn this study, a mathematical model which takes heterogeneity into account is presented to describe city population dynamics. Initial insight is gained by qualitative analyses of a homogeneous version of this model. To understand the population dynamics of South African... -
Barriers hindering biomimicry adoption and application in the construction industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olusegun A. Oguntona --- Sustainable Human Settlement and Construction Research Centre, Faculty of Engineering and the Built Environment, South Africa Clinton O. Aigbavboa --- Sustainable Human Settlement and Construction Research Centre, Faculty of Engineering and the Built Environment, South AfricaAttaining the goal of sustainability in the construction industry is a demanding task that comes with numerous challenges and complexities. To overcome these, biomimicry, as the study and emulation of nature’s features, processes and systems for solving diverse human issues... -
Relationships between commonly-used South African and international soil phosphorus extraction tests on pristine and cultivated soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: VG White --- , South Africa AG Hardie --- , South Africa PJ Raath --- , South AfricaThe availability of soil phosphorus (P) norms for various plant available P tests is limited due to the cost of establishing these norms. Consequently a need exists for a means of converting between the values of commonly used South-African and... -
Brown hyaena (Parahyaena brunnea) diet composition from Zingela Game Reserve, Limpopo Province, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: J Philip B Faure --- Department of Nature Conservation, George South Africa Nadine J Holmes --- Primate and Predator Project, Lajuma Research Centre, South Africa Lawrence H Watson --- Department of Nature Conservation, George South Africa Russell A Hill --- Primate and Predator Project, Lajuma Research Centre, South AfricaBrown hyaenas Parahyaena brunnea are classified as ‘Near Threatened’. Although predominantly scavengers, they are frequently blamed for livestock depredations leading to persecution. Information on brown hyaena diets is important for understanding the degree of potential conflict with farming livelihoods and... -
Constructions of sexuality and HIV risk among young people in Venda, South Africa: implications for HIV prevention
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Veronica Sivhabu --- Department of Psychology, South Africa Maretha Visser --- Department of Psychology, South AfricaThe study explored constructions of sexuality among young people of Venda in Limpopo, South Africa, and cultural practices that can be used to develop context-specific HIV prevention programmes. HIV prevention can be promoted by including some cultural practices in prevention... -
Multivariate analysis to research innovation complementarities
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Hernán Alejandro Morero --- Centro de Investigaciones y Estudios sobre Cultura y Sociedad (CIECS) – CONICET y UNC, Argentina Pablo Ortiz --- Facultad de Ciencias Económicas, Departamento de Economía y Finanzas, UNC, ArgentinaIt is widely recognized that orthodox economics is obsessed with econometrics tools. However, econometrics techniques have a limited capacity to deal with qualitative variables coming from surveys. This paper presents a defence of the use of statistical methods, in particular... -
Discrimination of the phenotypic sardine Sardina pilchardus stocks off the Moroccan Atlantic coast using a morphometric analysis
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Mounir --- Biodiversity and Dynamics of Ecosystems Laboratory, Department of Biology, Faculty of Sciences, Morocco A Ewague --- Biodiversity and Dynamics of Ecosystems Laboratory, Department of Biology, Faculty of Sciences, Morocco M Znari --- Biodiversity and Dynamics of Ecosystems Laboratory, Department of Biology, Faculty of Sciences, Morocco H Elmghazli --- Biodiversity and Dynamics of Ecosystems Laboratory, Department of Biology, Faculty of Sciences, MoroccoMorphometric variation can be very useful for discriminating ‘phenotypic stocks’ as groups with similar life-history traits. Such groups are of great importance for accurate population-dynamics modelling for purposes of fishery stock assessment and management, independent of their genetic differences or... -
Evidence for multiple paternity and confirmation of an Indo-Pacific origin of blacktip shark Carcharhinus limbatus occurring in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AE Bester-van der Merwe --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa SN Maduna --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa KL Hull --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa J Bell --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa C Rossouw --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa SP Wintner --- KwaZulu-Natal Sharks Board, South AfricaThe blacktip shark Carcharhinus limbatus is a cosmopolitan species found in warm-temperate, subtropical and tropical waters around the world. The research here aimed to assess whether multiple paternity exists in South African C. limbatus and to confirm phylogeographic patterns previously... -
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 BeninEnvironmental 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... -
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 AfricaThe 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,... -
The costs of home-based HIV testing and counselling in sub-Saharan Africa and its association with testing yield: a literature review
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Katharina Hauck --- Abdul Latif Jameel Institute for Disease and Emergency Analytics, MRC Centre for Global Infectious Disease Analysis, Department of Infectious Disease Epidemiology, School of Public Health, UKMore than 14.5 of the 36.7 million people living with HIV globally do not know their HIV status, making comprehensive testing interventions a critical step in ending the HIV/AIDS epidemic. Home-based testing and counselling (HBTC) involves small teams of community... -
Post COVID-19 online shopping in South Africa: A mediation analysis of customer satisfaction on e-service quality and purchase intention
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Matolwandile M. Mtotywa --- Tshwane University of Technology, South Africa Charles Kekana --- Tshwane University of Technology, South AfricaThe study investigated the dynamics of online shopping focusing on mediation analysis of customer satisfaction on e-service quality and purchase intention. The study used a cross-sectional quantitative method where 324 responses were collected through a self-administered online survey questionnaire from... -
Interactional Therapy: Prospects for treating mental health conditions
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kobus du Plooy --- Community Psychosocial Research (COMPRES), South AfricaThis practice-oriented article proposes Interactional Therapy (IT) for the treatment of mental health conditions. A case example illustrates the IT application and purpose. From this example, IT appears to be of incremental advantage for treating mental health conditions. Additionally, a... -
Mental health and individual and organisational outcomes: A latent profile analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Molandri Moller --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South AfricaThis study aimed to identify latent mental health profiles for managers in agribusinesses. Additionally, we aimed to investigate how these profiles differed regarding the managers’ job satisfaction, organisational citizenship behaviour, and intention to leave. Managers (N = 507) from agribusinesses... -
Seasonal and successional patterns of phytoplankton in Epe Lagoon, Lagos, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: OA Kunrunmi --- Department of Botany, Nigeria TA Adesalu --- Department of Botany, NigeriaVariations in phytoplankton species abundance and composition are regulated by changes in physico-chemical factors. A study of biodiversity and successional sequences was carried out monthly from November 2012 to April 2014 to determine the environmental factors controlling phytoplankton assemblages in... -
Validation of the periodicity of growth zone deposition in otoliths of two large endemic Labeobarbus species in Lake Tana, Ethiopia
Item type: Journal Article • Journal: African Zoology • Authors: Shewit Gebremedhin --- Department of Animal Science and Aquatic Ecology, Belgium Karen Bekaert --- Flanders Research Institute for Agriculture, Fisheries, and Food (ILVO), Belgium Abebe Getahun --- Department of Zoological Sciences, Ethiopia Stijn Bruneel --- Department of Animal Science and Aquatic Ecology, Belgium Wassie Anteneh --- Department of Biology, Ethiopia Els Torreele --- Flanders Research Institute for Agriculture, Fisheries, and Food (ILVO), Belgium Peter Goethals --- Department of Animal Science and Aquatic Ecology, BelgiumAlthough validation of the rate of growth zone deposition is a prerequisite for accurate age estimation, such studies are non-existent for the endemic Labeobarbus species in Lake Tana. Therefore, the aim of the current study was to validate the periodicity... -
Spatial modelling of cumulative human pressure in the tropical coastscape of Zanzibar, Tanzania
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ZA Khamis --- Department of Geography and Geology, Finland R Kalliola --- Department of Geography and Geology, Finland N Käyhkö --- Department of Geography and Geology, FinlandCoastal landscapes and seascapes (‘coastscapes’) are under immense anthropogenic pressures emanating from multiple human activities. We applied spatial modelling to characterise the cumulative pressures in the coastscape of Zanzibar’s main island Unguja (hereafter Zanzibar), in the western Indian Ocean. We... -
A snapshot assessment of the diet of Cape fur seals Arctocephalus pusillus pusillus at Ilha dos Tigres, Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Winkler --- Department of Ichthyology and Fisheries Science, South Africa S Mannheim --- Department of Ichthyology and Fisheries Science, South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa C Santos --- Biologia Faculdade de Ciências, Angola C de Beer --- Department of Ichthyology and Fisheries Science, South Africa MJ Smale --- Department of Zoology and Institute for Coastal and Marine Research, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe population of Cape fur seal Arctocephalus pusillus pusillus at Ilha dos Tigres off the coast of southern Angola is expanding. Until now the only available biological information on the population has been its demographic parameters, and this insufficiency has... -
Characterisation of livestock biochars and their effect on selected soil properties and maize early growth stage in soils of Eastern Cape province, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Admire R Dzvene --- Department of Agronomy, South Africa Cornelius Chiduza --- Department of Agronomy, South Africa Pearson NS Mnkeni --- Department of Agronomy, South Africa Prince C Peter --- Department of Agronomy, South AfricaFew studies have evaluated biochar application rates that would make economic sense using feedstocks readily available to subsistence farmers. Biochar from livestock manures were examined in Oakleaf and Tukulu soils. Pyrolysis had the most effect on poultry manure where it... -
A bibliometric analysis of the research on shot peening
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Shijun Chen --- Faculty of Engineering and the Built Environment, South Africa Dawood A. Desai --- Faculty of Engineering and the Built Environment, South Africa Stephan Philippus Heyns --- Faculty of Engineering and the Built Environment, South Africa Francesco Pietra --- School of Mechanical, Industrial and Aeronautical Engineering, South AfricaA bibliometric analysis of shot peening was carried out to provide insights into academic activities and trends of the research on surface treatment processes from 1997 to 2017 based on the publications collected from the database Science Citation Index. The... -
Storytelling: Career identities of South African high school learners
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sharonrose Sefora --- Institute for Open and Distance Learning, South AfricaThis study explored the career identities of adolescents from their life narratives. Participants were adolescent learners attending a South African high school. They shared their narratives on childhood backgrounds, the sense of self, future aspirations, inspiration of dreams, and culture/beliefs/values... -
Taha taha taha: South African bird names across time, language and usage
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Adrian Koopman --- Faculty of Arts and Design, South Africa Eckhart Buchmann --- School of Clinical Medicine,Humans find birds important as food, symbols, competitors, and objects for amusement or study, and give names to different groups or species of bird. However, a single bird may have many names, likely related to different contexts. This article proposes... -
Preliminary structural validation of the Afrikaans version of the Children’s Hope Scale
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Donnay Manuel --- Child and Family Studies, South Africa Maria Florence --- Child and Family Studies, South Africa Sabirah Adams --- Language Development Group, Centre for Higher Education Development, South Africa Mulalo Mpilo --- Child and Family Studies, South Africa Anton Delport --- Child and Family Studies, South Africa Mariska Pienaar --- Department of Psychology, South Africa Deborah Sinclair --- Child and Family Studies, South Africa Shazly Savahl --- Child and Family Studies, South AfricaThis study aimed to test the overall fit structure and reliability of scores from the Afrikaans version of the Children’s Hope Scale. The validation sample comprised of 899 adolescent learners selected from 12 schools located in the Western Cape province... -
Using stable δ13C and δ15N isotopes to assess foodweb structures in an African subtropical temporary pool
Item type: Journal Article • Journal: African Zoology • Authors: L de Necker --- Water Research Group, Unit for Environmental Sciences and Management, South Africa A Manfrin --- Environmental Campus Birkenfeld, Germany Y Ikenaka --- Water Research Group, Unit for Environmental Sciences and Management, South Africa M Ishizuka --- Laboratory of Toxicology, Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Japan L Brendonck --- Water Research Group, Unit for Environmental Sciences and Management, South Africa JHJ van Vuren --- Water Research Group, Unit for Environmental Sciences and Management, South Africa B Sures --- Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), Germany V Wepener --- Water Research Group, Unit for Environmental Sciences and Management, South Africa NJ Smit --- Water Research Group, Unit for Environmental Sciences and Management, South AfricaSouthern Africa has one of the highest densities of temporary pools and some of the most understudied temporary wetlands in the world. Additionally, the eastern African annual killifishes (Nothobranchius spp.) are rare in southern Africa and found exclusively in temporary... -
Spatial patterns and environmental risks of ringnet fishing along the Kenyan coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Thoya --- Kenya Marine and Fisheries Research Institute, Kenya S Pérez-Jorge --- Marine and Environmental Sciences Centre (MARE) and Institute of Marine Research (IMAR), Portugal GM Okemwa --- Kenya Marine and Fisheries Research Institute, Kenya H Mwamlavya --- Kenya Marine and Fisheries Research Institute, Kenya A Tuda --- Kenya Wildlife Service, Kenya N Wambiji --- Kenya Marine and Fisheries Research Institute, Kenya JM Maina --- Department of Environmental Sciences, AustraliaRingnet fishing began in the early 20th century and is practised worldwide, mainly to target nearshore pelagic species. The method was introduced to Kenya’s coastal waters by migrant fishers from Tanzania. However, the impacts of this fishing gear remain poorly... -
Nematode assemblages and soil microbial communities in soils associated with glyphosate-resistant soybean
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Chantelle Girgan --- Nematology Unit, Biosystematics Division, Agricultural Research Council-Plant Health and Protection, South Africa Sarina Claassens --- Unit for Environmental Sciences and Management, South Africa Hendrika Fourie --- Unit for Environmental Sciences and Management, South AfricaThe introduction of genetically modified glyphosate-resistant (GR) crops led to increased use of glyphosate, with potential long-term effects on biological soil communities. Abundance and diversity of plant-parasitic and non-parasitic nematodes, as well as microbial community structure in the rhizosphere of... -
Factors to consider for effective critical thinking development in auditing students
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E. A. J. Terblanche --- Department of Financial Governance, South Africa B. de Clercq --- Department of Taxation, South AfricaFor students to be able to adapt in a fast-changing, technology-driven world, they have to be critical thinkers. With critical thinking being viewed as a prized commodity, there is an increased emphasis on this vital skill in the auditing profession... -
Haematology and biochemistry values for Temminck’s pangolins (Smutsia temminckii) from Zimbabwe
Item type: Journal Article • Journal: African Zoology • Authors: Ellen Connelly --- , Zimbabwe Lisa Hywood --- , Zimbabwe Mark Donaldson --- , Zimbabwe Darren W Pietersen --- , ZimbabweBlood biochemistry values are routinely employed during clinical examinations to assess the health of the patient and to identify potential underlying conditions. No blood biochemistry data are currently available for Temminck’s pangolin (Smutsia temminckii), a species that is being confiscated... -
Regional efficiency disparities in rural and community banks in Ghana: A data envelopment analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joy Say --- , China Hongjiang Zhao --- , China Francisca Sena Agbenyegah --- , Ghana Angela Abena Nusenu --- , China Evans Asante Boadi --- , China Samuel Morkporkpor Egbadewoe --- , USAThis study measured the level of rural and community banks’ (RCBs) efficiency in Ghana to ascertain whether there were regional disparities in the levels of efficiency using Charnes-Cooper-Rhodes (CCR) and Barker-Charnes-Cooper (BCC) models. We collected data from 127 banks over... -
Happiness at work: a phenomenological study of the experiences of hospitality industry employees
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Anne Eline Frederique Melief --- , The Netherlands Jan Arend Schulp --- , The Netherlands Marte Rinck de Boer --- , The NetherlandsThough happiness might be an interesting factor to consider in the discussion on retaining employees, only a limited number of studies on happiness of hospitality employees has been done. This master’s thesis study, rooted in the tradition of the interpretative... -
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 AfricaSnorkel 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... -
Assessment of heavy metals pollution in surface and groundwater systems in Oued Righ region (Algeria) using pollution indices and multivariate statistical techniques
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ML Benhaddya --- , Algeria Y Halis --- , Algeria B Hamdi-Aïssa --- , AlgeriaSurface and groundwater samples of the Oued Righ region (south-eastern Algeria) were analysed for Cd, Cr, Cu, Mn, Ni, Pb and Zn by atomic absorption spectrophotometric method. An integrated approach of pollution evaluation indices and multivariate statistical methods (one-way ANOVA,... -
Biomarker responses in African sharptooth catfish, Clarias gariepinus (Burchell, 1822), as indicators of potential metal and organic pollution along the Vaal River system, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LJ Connell --- , South Africa GR Jansen van Rensburg --- , South Africa A Avenant-Oldewage --- , South Africa R Greenfield --- , South AfricaThe Vaal River is of considerable economic and environmental importance. It flows through five provinces within South Africa and it is subject to numerous recreational and industrial activities, which often prove detrimental to the health of the system. To determine... -
Potential release sites and strategies for a Bearded Vulture Gypaetus barbatus reintroduction in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Christiaan W Brink --- , South Africa Sonja Krüger --- , South Africa Arjun Amar --- , South AfricaThe southern African population of Bearded Vultures Gypaetus barbatus has declined rapidly and it is threatened with extinction. In response to this decline and the additional threats of wind farm developments in the core of the species’ range, it has... -
Maize (Zea mays) yield and its relationship to soil properties under integrated fertility, mulch and tillage management in urban agriculture
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A Shumba --- , Zimbabwe N Dunjana --- , Zimbabwe B Nyamasoka --- , Zimbabwe P Nyamugafata --- , Zimbabwe S Madyiwa --- , Zimbabwe J Nyamangara --- , ZimbabweUrban agriculture improves people’s livelihoods in developing countries. An experiment was carried out to assess effects of soil fertility, mulch and tillage on soil organic carbon (SOC), aggregate stability (Ima), bulk density (BD), steady state infiltration rate (SSIR) and maize... -
Diet of the marsh mongoose around a non-permanent reservoir: response of a generalist opportunist forager to the absence of crabs
Item type: Journal Article • Journal: African Zoology • Authors: Emmanuel Do Linh San --- , South Africa Aviwe Nqinana --- , South Africa Zimkitha JK Madikiza --- , South Africa Michael J Somers --- , South AfricaThe diet of the marsh or water mongoose Atilax paludinosus has been well studied in coastal and inland riverine habitats, where crabs often constitute the main prey in terms of frequency of occurrence. We investigated the feeding ecology of a... -
Genetic differentiation of selected drought and heat tolerant wheat genotypes using simple sequence repeat markers and agronomic traits
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sonto Silindile Mkhabela --- , South Africa Hussein Shimelis --- , South Africa Jacob Mashilo --- , South AfricaDevelopment of wheat (Triticum aestivum L.) varieties with increased yield potentials that are adapted to drought and heat stresses requires genetically differentiated and complementary parents. The present study established genetic profiles of heat and drought tolerant wheat genotypes through SSR... -
Perceptual systems of the self-management of students living with diabetes mellitus: an IQA approach
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: JKD Jacobs --- , South Africa WD Basson [cor1] MJ Basson --- , South AfricaIntroduction: Diabetes mellitus (DM) is a chronic metabolic disease defined by elevated blood glucose levels over a long period of time. One in 10 people are living with DM. -
Accounting for linefish dependency in management of the South African small pelagic fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Parker --- , South Africa JC Coetzee --- , South Africa H Winker --- , South Africa CD van der Lingen --- , South AfricaTo further implement an ecosystem approach to management of the small pelagic fishery in South Africa, we attempted to develop functional relationships between spatialised time-series of the biomass of three small pelagic fish species and the catch per unit effort... -
High genetic diversity and limited spatial structure in an endangered, endemic South African sparid, the red steenbras Petrus rupestris
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Gouws --- , South Africa SE Kerwath --- , South Africa WM Potts --- , South Africa NC James --- , South Africa NG Vine --- , South Africa PD Cowley --- , South AfricaThe red steenbras Petrus rupestris is endemic to South Africa, occurring from False Bay in the Western Cape Province to St Lucia in the province of KwaZulu-Natal. This species, the largest member of the family Sparidae, has undergone a substantial... -
Adoption determinants of multiple climate smart agricultural technologies in Zimbabwe: Considerations for scaling-up and out
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Angeline Mujeyi --- , South Africa Maxwell Mudhara --- , South Africa Munyaradzi J. Mutenje --- , ZimbabweUsing a multistage sampling technique, data were collected from 386 households in four districts of Zimbabwe to investigate current Climate Smart Agriculture (CSA) technology combinations smallholder farmers practising integrated crop-livestock farming are adopting, as well as the determinants of adoption... -
Prospects of sustainable intensification of smallholder farming systems: A farmer typology approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Vine Mutyasira --- , ZimbabweSmallholder farming systems are highly diverse, owing to differences in farmers’ resource endowments, levels of technology use, degree of market access and agro-ecological factors. Consequently, the prospects of achieving sustainable intensification of smallholder farming systems need to be examined vis-à-vis... -
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 --- , NigeriaThe 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... -
Improving the forecasts of commercial timber volume in transition forest in the northern Brazilian Amazon
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Robson B de Lima --- , Brazil Rinaldo LC Ferreira --- , Brazil José AA da Silva --- , Brazil Marcelino C Guedes --- , Brazil Jadson C de Abreu --- , Brazil Cinthia P de Oliveira --- , Brazil Robson C Lima --- , Brazil Diego AS da Silva --- , Brazil Renan M Santos --- , Brazil Erik PF Carvalho --- , Brazil Robson M de Araújo Silva --- , BrazilThe commercial volume in tropical forests is fundamental to the implementation of sustainable forest management plans. However, in the absence of local or generic volumetric equations, most forest managers and forest services are still using traditional form factors (FF) to... -
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 AfricaMiombo 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... -
Assessing wetland functionality using soil surface indicators in Letšeng- la-Letsie wetland in Quthing District, Lesotho
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nthuseng Kahlolo --- , Lesotho Botle Mapeshoane --- , Lesotho Peter Chatanga --- , Lesotho Lerato Seleteng-Kose --- , Lesotho Makoala V Marake --- , LesothoWetlands are globally valuable ecosystems as they provide many important services to the human society, yet the ecology of some of them is yet to be understood. This study assessed the functionality of Letšeng-la-Letsie wetland in Lesotho, using the Landscape... -
The socio-ecology of childcare in Apartheid South Africa: Retrospective experiences of a sample of caregivers
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jené Pretorius --- , South Africa Carinne Annfred Lorraine Petersen --- , South Africa Athena Pedro --- , South AfricaWe sought to retrospectively understand current caregivers’ childhood experiences of apartheid in South Africa. A sample of eight caregivers (black = 3, white = 2, mixed race = 3; age range = 29 to 55 years) took part in the... -
Perceived stress, coping and mental health of teachers: A latent profile analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Vasti Marais-Opperman --- , South Africa Chrizanne van Eeden --- , South Africa Sebastiaan Rothmann --- , South AfricaThis study aimed to identify teachers’ stress profiles from their perceived stress responses, and to determine the relationships between their stress profiles, coping strategies, and mental health. Participants were a convenience sample of teachers (n = 209) in the Sedibeng... -
Technico-economic comparison of heat transfer fluids or thermal energy storage materials: A case study using Jatropha curcas oil
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kokouvi Edem N’Tsoukpoe --- , Burkina Faso Nolwenn Le Pierrès --- , France Yao Manu Seshie --- , Burkina Faso Yézouma Coulibaly --- , Burkina FasoThermal oils are omnipresent in processes using heat at high temperature as heat transfer fluids (HTFs) as well as thermal storage materials (TESMs), particularly in concentrating solar plants. In this study, a methodology for technico-economic comparison of HTF and TESM... -
Facing challenges and drawing strength from adversity: Lived experiences of Tibetan refugee youth in exile in India
Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Kiran Dolly Sapam --- , India Parisha Jijina --- , IndiaThe current study is a qualitative investigation aimed at exploring the lived experiences of Tibetan youth who had escaped to India as unaccompanied minors and since then have been living as refugees in India without their parents. The study attempts... -
Quality assessment of surface water using the Nile Chemical Pollution Index (NCPI) and microbiological pollution of the Rosetta Branch (Nile River, Egypt)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Amal A Othman --- , Egypt Afify DG Al-Afify --- , Egypt Amaal M Abdel-Satar --- , Egypt Mohamed F Ramadan --- , EgyptThe Rosetta Branch (Nile River, Egypt) is one of the main sources of freshwater for drinking, agricultural, and industrial activities in the Nile Delta. However, this water supply is compromised because it receives heavy loads of domestic, agricultural and industrial... -
Sex determination of Kelp Gull Larus dominicanus vetula using head and bill measurements
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Albert Snyman --- , South Africa Elana Mostert --- , South Africa Katrin Ludynia --- , South AfricaKelp Gulls Larus dominicanus are not sexually dimorphic by plumage or visual characteristics and it is therefore difficult to distinguish males from females in the field. This paper assesses the sexual size dimorphism in this species and provides reliable methods... -
Does extant work-family research generalize to African Nations? Meta-analytic tests
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Jenny M. Hoobler --- , South Africa Suzanne Gericke --- , South Africa Eileen Koekemoer --- , South AfricaThis study explores the question of the generalizability of extant work-family research, most of which has been conducted in Western cultural contexts, to workers in African nations. We conducted a meta-analysis of African research (55 studies, N = 16,162), comparing means for... -
How hotels suffer from and deal with the economic effects of tourism seasonality: A case study of Aksum, Ethiopia
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Amare Yaekob Chiriko --- , EthiopiaThe aim of this study is to assess the economic costs of tourism seasonality on hotels, and strategies for addressing these costs by taking Aksum, northern Ethiopia, as a research context. Semi-structured interviews were employed to collect data from 14... -
Influence of soil organic carbon, fertiliser management, and weeding regime on weed dynamics and maize productivity on sandy soils in eastern Zimbabwe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Justin Chipomho --- , Zimbabwe Cosmas Parwada --- , Zimbabwe Joyful T Rugare --- , Zimbabwe Stanford Mabasa --- , Zimbabwe Regis Chikowo --- , Zimbabwe Arnold B Mashingaidze --- , ZimbabweLabour bottlenecks and multiple operations at the start of a cropping season often result in inadequate early weed control and subsequent poor crop performance. Therefore, there is a need to establish management practices that provide the best opportunities for the... -
Knowledge, attitude and practices of patients receiving maintenance haemodialysis in Bloemfontein, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: HC Spies --- , South Africa VL van den Berg --- , South Africa M Nel --- , South AfricaIntroduction: In sub-Saharan Africa, a paucity of data exists in respect of the knowledge, attitudes and practices (KAP) of patients on maintenance haemodialysis (MHD) regarding the dietary adaptations they should make. -
Resilience to shocks and food insecurity: Determinants, and the impact of smallholder jatropha curcas cultivation in Southern Malawi
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Owen Y. Chamdimba --- , South Africa Gerald F. Ortmann --- , South Africa Edilegnaw Wale --- , South AfricaThis paper studied household resilience to food insecurity, its determinants, and the impact of shocks on welfare in Southern Malawi. The resilience concept is evolving. A crucial issue in scholarly and policy space is how it is measured. This paper... -
Predictions of chlorophyll concentrations in the leaves of seedlings of two congeneric tropical trees from RGB digital image components
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Marcelo Schramm Mielke --- , Brazil Luciana Santos Lobo --- , Brazil Geane Santos da Costa --- , Brazil Ana Cristina Schilling --- , Brazil Martielly Santana dos Santos --- , Brazil Ândrea Carla Dalmolin --- , BrazilThe segmentation of digital images in red, green and blue (RGB) components is a low-cost method for monitoring leaf chlorophyll concentrations and seedling quality. The two congeneric species, Cariniana legalis and C. estrellensis, are distinguished based on differences in bark... -
The impact of rubber effluent discharges on the water quality of a tropical rain forest river in Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MO Omoigberale --- , Nigeria IM Ezenwa --- , Nigeria E Biose --- , Nigeria C Okoye --- , NigeriaThe impact of a rubber effluent on the water quality of Oken River, Nigeria, was assessed. Surface water was analysed for water quality parameters at four sites; one upstream and three downstream. Significantly raised (p ≤ 0.05) levels of electrical... -
Phytoplankton community structure in relation to physico-chemical factors in a tropical soda lake, Lake Shala (Ethiopia)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Solomon Wagaw --- , Ethiopia Seyoum Mengistou --- , Ethiopia Abebe Getahun --- , EthiopiaPhytoplankton communities responses to physico-chemical factors were studied in Lake Shala from January to December 2018. Distinct spatial and seasonal variations were observed for all physico-chemical parameters, except DO (ANOVA: p < 0.05). In total, 72 taxa, Bacillariophyta (55 taxa),... -
The effects of Acacia mearnsii (black wattle) on soil chemistry and grass biomass production in a South African semi-arid rangeland: implications for rangeland rehabilitation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Onalenna Gwate --- , South Africa Sukhmani K Mantel --- , South Africa Lesley A Gibson --- , United Kingdom Zahn Munch --- , South Africa Bukho Gusha --- , South Africa Anthony R Palmer --- , South AfricaGlobally, grasslands are under threat from woody encroachment by invasive alien plants and this undermines grass production. The study sought to determine the effects of Acacia mearnsii clearing on soil physico-chemical properties and grass production. Soil samples were collected from... -
Revenue recognition practices in South Africa: An analysis of the decision usefulness of IFRS 15 disclosures
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: D. Coetsee --- , South Africa A. Mohammadali-Haji --- , South Africa M. van Wyk --- , South AfricaThe paper analyses the first-time adoption of IFRS 15 and reports on the appropriateness, rigour and decision usefulness of revenue disclosure practices in South Africa. The decision usefulness is assessed by reviewing the nature, amount, timing and uncertainty of revenue... -
Personality influences on ethical, servant, and authentic leadership: A meta-analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Xinqi Lin --- , China Yuxiang Luan --- , China Guolong Zhao --- , ChinaThis meta-analysis aimed to determine the trends in the evidence on the personality influences on three emerging forms of positive leadership: ethical leadership (EL), servant leadership (SL), and authentic leadership (AL). Following a search of PsycINFO, EBSCO, Web of Science,... -
Fundamental analysis, low accruals, and the accrual anomaly: Korean evidence
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Young Jun Kim --- , Republic of Korea Jung Hoon Kim --- , USA Sewon Kwon --- , Republic of Korea Su Jeong Lee --- , Republic of KoreaPrior studies in Korea document that low accrual firms yield extremely low returns, driving away abnormal returns of an accrual-based trading strategy. We examine whether the performance of an accrual-based trading strategy can be improved using fundamental analysis to distinguish... -
Trends in ethylene management strategies: towards mitigating postharvest losses along the South African value chain of fresh produce – a review
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Bongolwethu P Mabusela --- , South Africa Zinash A Belay --- , South Africa Buntu Godongwana --- , South Africa Namrata Pathak --- , Germany Pramod V Mahajan --- , Germany Patricia M K Mathabe --- , South Africa Oluwafemi J Caleb --- , South AfricaThe management of ethylene during postharvest storage is of critical importance to fresh produce wholesalers and retailers. The management of ethylene is an important determinant of the quality and shelf life of fresh fruit and vegetables. Ethylene blocking action and... -
Public and private investments for banana Xanthomonas Wilt control in Uganda: The economic feasibility for smallholder farmers
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Elisabetta Gotor --- , Italy Viola Di Cori --- , Italy Tiziana Pagnani --- , Italy Enoch Kikulwe --- , Uganda Marta Kozicka --- , Italy Francesco Caracciolo --- , ItalyBanana Xanthomonas Wilt (BXW) poses a serious threat to livelihoods and food security for millions of households in Africa. Despite considerable investments in Uganda by the Government and other national and international stakeholders, the disease persists in the country after... -
An analysis of factors affecting the speed of establishment of field-based farmer learning alliances: A case of Farmer Learning Centres (FLCs) in southern Zimbabwe
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Toga Mapangisana --- , Zimbabwe Paul Mapfumo --- , Zimbabwe Shephard Siziba --- , Zimbabwe Florence Mtambanengwe --- , ZimbabweFarmer learning alliances are an important vehicle for information dissemination and co-innovation among smallholder communities in southern Africa. However, the process of establishing functional farmer learning alliances tends to be uneven, slow, and costly for many development agents. This study... -
Rural infrastructure and production efficiency of food crop farmers: Implication for rural development in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abeeb Babatunde Omotoso --- , Nigeria Saidat Adebola Daud --- , Nigeria Luke Okojie --- , Nigeria Abiodun Olusola Omotayo --- , South AfricaThis study investigated the impact of rural infrastructure on production efficiency of food crop rural farmers in Ogun State, Nigeria. A total of 160 farming households from 20 communities in Abeokuta and Ilaro in Ogun State Agricultural Development Programme (OGADEP)... -
Using crown characterisation variables as indicators of the vigour, competition and growth of Brazilian pine
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Lorena Oliveira Barbosa --- , Brazil César Augusto Guimarães Finger --- , Brazil Emanuel Arnoni Costa --- , Brazil Otávio Camargo Campoe --- , Brazil Cristine Tagliapietra Schons --- , BrazilCrown variables are used in growth and production models to increase the accuracy of estimates. These variables are costly and difficult to measure, mainly in dense native forests such as mixed ombrophilous forests (MOF), where Araucaria angustifolia is the predominant... -
Determining percentage body fat of male South African jockey apprentices irrespective of hydration status
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Emma Illidge --- , South Africa Chara Biggs --- , South Africa Kathleen Krog --- , South Africa Tarryn Mason --- , South Africa Mandy Read --- , South AfricaObjective: The aim was to determine the most appropriate field techniques to measure %BF when both euhydrated and dehydrated. -
Women offenders’ experiences of rehabilitation in a South African correctional centre
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sibulelo Qhogwana --- , South Africa Puleng Segalo --- , South AfricaThis study explored gendered rehabilitation of women in correctional spaces and the systems and structures that recreate inequities in women’s incarceration experiences. Eighteen black women completed in-depth interviews on their offender rehabilitation experiences. Their age ranged from 23 to 69... -
An assessment of South African technological capability using patent data from WIPO Patentscope database
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Swapan Kumar Patra --- , South Africa Mammo Muchie --- , South AfricaThe Post-Apartheid South African Government has produced three white papers (1996–2008), (2008–2018) and (2018–2028) on science technology and innovation for national development. In all these policy documents, science and technology-based industries are considered as priority areas in socioeconomic development. Using... -
The financial and social efficiency of rural cooperatives in South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Collin L. Yobe --- , South Africa Stuart R. D. Ferrer --- , South Africa Maxwell Mudhara --- , South AfricaIdentifying the type of organization for achieving social efficiency for agricultural development remains a challenge. In this study, the relationship between the financial and social efficiency of South African agricultural cooperatives was examined. Data, comprising 1788 agricultural cooperatives, were obtained... -
Macrophyte species diversity and distribution in relation to water quality of the Cheleleka Wetland in Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Haymanot Tesfaye --- , Ethiopia Bikila Warkineh --- , EthiopiaThe Cheleleka Wetland is located in the Ethiopian Rift Valley on the upper shore of Lake Hawassa, after which the regional capital is named. This study investigated the relationship between water quality and the occurrence and diversity of macrophyte species... -
Using the Kariba Invitation Tiger Fishing Tournament for monitoring an invasive crayfish Cherax quadricarinatus in Lake Kariba, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LT Marufu --- , Zimbabwe C Phiri --- , Zimbabwe M Barson --- , Botswana T Nhiwatiwa --- , ZimbabweThe stomach contents of tigerfish Hydrocynus vittatus, caught in an angling competition on Lake Kariba, were examined to determine the extent to which they feed on the invasive crayfish Cherax quadricarinatus. The stomach contents of 281 tigerfish caught during three... -
Could transformational leadership predict employee voice behaviour? Evidence from a meta-analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Guolong Zhao --- , China Yuxiang Luan --- , ChinaEmployee voice behaviour is a crucial form of social capital for business organisations. This meta-analysis aimed to clarify the relationship between transformational leadership and voice behaviour. A meta-analysis of 44 correlations (n = 14 473) was conducted to evaluate the overall association,... -
First assessment of the blue carbon storage of Rhizophora and Bruguiera mangrove stands on the island of Mauritius (western Indian Ocean)
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Phanesh Raghbor --- , Mauritius Linisha Devi Seeruttun --- , Mauritius Chandani Appadoo --- , MauritiusBlue carbon has gained recognition as a strategy to mitigate climate change. Mangroves allow significant amounts of carbon to be sequestered and stored and are considered an important component in the offset of greenhouse gas emissions. Despite this, little is... -
Soil quality index for extensive pastures in hilly landforms region of highly weathered soils in an Atlantic forest biome, Brazil
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: DL Burak --- , Brazil E de C Monteiro --- , Brazil RR Passos --- , Brazil E de Sá Mendonça --- , BrazilExtensive pasture systems established in highly weathered tropical soils on steep slopes are vulnerable to soil degradation. Soil degradation can be monitored using an soil quality index (SQI). The SQI can assess both environmental aspects and indices related to pasture... -
Economic Returns of public research and development funding in South Africa: Evidence from the Agricultural Research Council’s table grapes cultivar development programme
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sukoluhle Mazwane --- , South Africa Moraka Nakedi Makhura --- , South Africa Kenneth Nhundu --- , South Africa Petronella Chaminuka --- , South AfricaThe study sought to estimate the genetic gains and associated monetary value contributed by the TGCD programme of the Agricultural Research Council (ARC). The Just-Pope production function and cost benefit analysis (benefit cost ratio – BCR, and modified internal rate... -
The Catalan tourism subsystem: applying the methodology of subsystems in the tourism sector
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Albert Vancells --- , Spain Juan Antonio Duro --- , SpainThe analysis of input-output is one of the methodologies most applied in tourism literature to the study of the impacts of tourism activity. In this article, we apply the input-output (IO) subsystems methodology. This methodology is a useful tool for... -
The Teacher Well-Being Scale (TWBS): Construct validity, model comparisons and measurement invariance in an Ethiopian setting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Girum Tareke Zewude --- , Hungary Maria Hercz --- , HungaryThe present study aimed to adapt and validate the Teacher Well-Being Scale (TWBS), in an Ethiopian education setting. To test the reliability and validity of the scale, an Amharic version of the TWBS was developed and administered to a sample... -
Diet of a generalist mammalian mesocarnivore in an urban matrix
Item type: Journal Article • Journal: African Zoology • Authors: Jarryd P Streicher --- , South Africa Melanie B Streicher --- , South Africa Tharmalingam Ramesh --- , South Africa Colleen T Downs --- , South AfricaAnthropogenic habitat conversion through urban sprawl is driving mesocarnivores to modify their behaviour and ecology. Thorough knowledge of their feeding ecology is fundamental in understanding the pressures imposed on mesocarnivores by urbanisation. The diet of the water mongoose Atilax paludinosus... -
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 --- , CanadaThe 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... -
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 AfricaThere 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,... -
Empirical assessment of South Africa’s national government websites for evidence of e-Government growths
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Letjedi Thabang Mabinane --- University of Johannesburg, South Africa Emmanuel Innocents Edoun --- University of Johannesburg, South AfricaTo draw insights and better understand the online presence of South Africa's national government departments, an empirical analysis of their websites is conducted. The objective of this study was to determine whether South Africa has deployed enough online services since... -
Density effect on growth variables of eucalypt clones in a Nelder wheel experiment
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Franciele Alba da Silva --- , Brazil Sylvio Péllico Netto --- , Brazil Alexandre Behling --- , Brazil Henrique Soares Koehler --- , Brazil Ataídes Marinheski Filho --- , Brazil Cláudio Cerqueira --- , BrazilNelder’s systematic design enables studies of tree plantation spacing in relatively small areas, which is of great interest for forest planning. However, dependence between observations can arise with this method, making it difficult to use classic statistics for evaluating an... -
A reflection on Southern Forests: a Journal of Forest Science using bibliometrics
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: S Grobbelaar --- , South Africa R Oosthuizen --- , South AfricaBibliometrics is used to determine patterns in published research. The aim of this paper is to illustrate the observable bibliometric patterns in the journal Southern Forests: a Journal of Forest Science. Frequency analysis and co-occurrence network analysis were performed to... -
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 ArabiaWe 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... -
Signalling of internal audit effectiveness
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Jabile Brenda Pooe --- , South Africa Karin Barac --- , South Africa Kato Plant --- , South Africa Blanche Steyn --- , South AfricaThe internal audit function is increasingly recognised as an important internal governance mechanism and consequently factors that contribute to its effectiveness are now an area of great interest to researchers and practitioners. This study draws on signalling theory to fill... -
Analysis of domestic water consumption in peri-urban South Africa: The case study of Thohoyandou in Limpopo province, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: M. Muloiwa --- , South Africa M. O. Dinka --- , South Africa S. Nyende-Byakika --- , South AfricaThe aim of the paper was to analyze factors affecting domestic water consumption in Thohoyandou, Limpopo province, South Africa. A structured questionnaire was used to collect qualitative and quantitative data in the study area. A total sample of 100 households... -
Factors influencing eco-industrial development in Africa: A SWOT analysis of a Tanzanian industrial park
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Amani G. Rweyendela --- , Tanzania Godlisten G. Kombe --- , TanzaniaEco-industrial parks (EIPs) have been proposed as a transformative model for assisting developing countries in upgrading their industrial systems to meet higher global environmental standards while boosting economic competitiveness. However, for many industrial settings, the requisite contextual requirements have yet... -
Do government agricultural policies affect production and export of cocoa in Ghana?
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Hadrat Yusif --- , Ghana Emmanuel Nii Oseku Ntreh --- , Ghana Daniel Sakyi --- , Ghana Samuel Tawiah Baidoo --- , GhanaThe contributions of the agricultural sector to economic growth of developing countries of which Ghana is no exception cannot be overemphasized. Despite the sector being the mainstay of the Ghanaian economy, it is still confronted with several challenges. As a... -
Habitat selection and foraging preference of the endangered addax (Addax nasomaculatus) in a fenced wildlife reserve within its historic range: insights for supporting effective reintroduction
Item type: Journal Article • Journal: African Zoology • Authors: Mohsen Chammem --- , Tunisia Hicham Seri --- , Tunisia Rita Bastos --- , Portugal Mário Santos --- , Portugal Joana Vicente --- , Portugal Touhami Khorchani --- , Tunisia João Alexandre Cabral --- , PortugalReintroduction of species should be based on ecological knowledge, which is fundamental to enhancing the probability of success, but also in predicting the response to future changing landscapes. The addax (Addax nasomaculatus), an endangered antelope whose ecology is mostly unknown,... -
Validation of lipid extraction and correction methods for stable isotope analysis of freshwater food webs in southern Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A van der Merwe --- , South Africa A Myburgh --- , South Africa G Hall --- , South Africa A Kaiser --- , South Africa S Woodborne --- , South AfricaStable isotope analysis is ubiquitous as a method to investigate food-web dynamics at various scales in aquatic ecology. Most studies make use of dorsal muscle tissue, which involves lethal sampling of the fish. The sampling of muscle tissue is often... -
Relationships between spacing, productivity and profitability of eucalypt plantations in a small rural property in south-eastern Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Gabriel Soares Lopes Gomes --- Universidade Federal do Espírito Santo, Brazil Sílvio Nolasco de Oliveira Neto --- Universidade Federal de Viçosa, Brazil Helio Garcia Leite --- Universidade Federal de Viçosa, Brazil Márcio Lopes da Silva --- Universidade Federal de Viçosa, Brazil Lucas Sérgio de Sousa Lopes --- Universidade Federal de Viçosa, Brazil Bruno Leão Said Schettini --- Universidade Federal de Viçosa, BrazilTree cultivation spacing can influence productivity and wood quality, with silvicultural, technological and economic implications. This study aimed to estimate the production and provide an economic analysis of Eucalyptus urophylla × Eucalyptus grandis stands as a function of planting spacing... -
Estimating the cost and efficiency gain of rolling out a multi-month dispensing programme for antiretroviral treatment in Tanzania
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: George Ruhago --- Muhimbili University of Health and Allied Sciences, Tanzania Steven Forsythe --- , USA Roland Van de Ven --- , USA Louis Apicella --- , USABackground: Globally, efforts to curtail the HIV pandemic are growing. The Joint United Nations Programme on HIV and AIDS (UNAIDS) and partners set the 95-95-95 targets to be achieved by 2025. Tanzania’s ongoing transition from single-month ARV to longer multi-month... -
Diet and condition of juvenile deep-water hake Merluccius paradoxus on the west coast of southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Gammon --- University of Cape Town, South Africa CL Moloney --- University of Cape Town, South Africa MR Lipinski --- Rhodes University, South AfricaThe composition of the diet of juvenile deep-water hake Merluccius paradoxus is described and compared for three body-condition groups (below-average, average, and above-average). Diet was analysed using three metrics: occurrence, numeric and gravimetric. Juvenile hakes were caught in January and... -
The Laplace transform on the rearrangement of invariant spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: René Erlin Castillo --- Departamento de Matemáticas Universidad Nacional de Colombia, Colombia A. Ricardo Miranda B. --- Departamento de Matemáticas Universidad Nacional de Colombia, Colombia Julio C. Ramos-Fernández --- Universidad Distrital Francisco José de Caldas, ColombiaIn a self contained presentation we study the boundedness of the Laplace transform on the rearrangement invariant Lebesgue Lp -space, we use real analysis techniques provided by convex analysis and the K-method. -
The power drivers of public sector audit committee effectiveness
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Philna Coetzee --- Tshwane University of Technology, South Africa Lourens Erasmus --- University of South Africa, South Africa Mangakane Pududu --- University of South Africa, South Africa Shan Malan --- University of South Africa, South Africa Audrey Legodi --- Tshwane University of Technology, South AfricaAudit committees are often implicated as accomplices in governance failures, or slow to react to findings. The power drivers of public sector audit committee effectiveness in developing countries is an under-researched area. With the progress of developing countries threatened by... -
Human resources and innovation capability: Evidences from Nigeria food and beverage firms
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Helen Olubunmi Aderemi --- Obafemi Awolowo University, Nigeria Victor Oluwasina Sobanke --- National Centre for Technology Management (NACETEM), Nigeria Matthew Olugbemiga Ilori --- Obafemi Awolowo University, NigeriaHuman resources are recognized as the ultimate and most indispensable resource in economic development. In this study, an inquiry was made to ascertain the determinants of workers’ innovativeness. A survey of 229 respondents in food and beverage processing firms selected... -
Experiences of sexual relationships of young black women in an atmosphere of coercion
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Frances Clüver [d373e18] Diane Elkonin Charles YoungNegotiations surrounding sexual activity are characterised by multiple power disparities that include race, social status and age, with gender being the most dominant differential in heterosexual interactions. Research has shown that women are physiologically more at risk of contracting HIV... -
Is higher risk sex common among male or female youths?
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Yifru Berhan --- , Ethiopia Asres Berhan --- , EthiopiaThere are several studies that showed the high prevalence of high-risk sexual behaviors among youths, but little is known how significant the proportion of higher risk sex is when the male and female youths are compared. A meta-analysis was done... -
Achievement of interventions on HIV infection prevention among migrants in China: A meta-analysis
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Rui Zhang --- , , People’s Republic of China Ling Chen --- , , People’s Republic of China Ya deng Cui --- , , People’s Republic of China Ge Li --- , , People’s Republic of ChinaIn China, migrants with acquired immunodeficiency syndrome (AIDS) have become a serious problem in the field of AIDS prevention. This study aimed to evaluate the efficacy of interventions for human immunodeficiency virus (HIV) infection prevention for migrants in China and... -
Food choice of an Algerian population of the spur‐thighed tortoise, Testudo graeca
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Rachid Rouag --- Centre universitaire d'El Tarf, Algerie Chahira Ferrah --- Université Badji Mokhtar, Algérie Luca Luiselli --- Centre of Environmental Studies Demetra s.r.l, Italia Ghoulem Tiar --- Université Badji Mokhtar, Algérie Slim Benyacoub --- Université Badji Mokhtar, Algérie Nadia Ziane --- Université Badji Mokhtar, Algérie El Hassan El Mouden --- Université Cadi Ayyad, MarocThe diet of an Algerian population of spur‐thighed tortoise (Testudo graeca) was studied with the aims of exploring: (i) the variation in diet among males, females and juveniles, (ii) the relationships between consumption and relative availability of the plant species,... -
Are environmental conditions in the eyes of the beholder? Foreign and local firms in Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Lilac Nachum --- Baruch College, City University New York, USA Chris Ogbechie --- Lagos Business School, NigeriaInternational business research has provided substantial empirical evidence that foreign firms investing in countries with adverse environmental conditions may emerge as the main competitors in those countries. Against this backdrop, the dominance of local banks in Nigeria is puzzling. Our... -
Kraals or bomas increase soil carbon and fertility across several biomes
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mia Momberg --- University of Pretoria, South Africa Anna Jean Haw --- , Kenya Perushan Rajah --- , South Africa Jacques van Rooyen --- , Kenya Heidi-Jayne Hawkins --- , South AfricaKnowledge about how pastoralism and kraaling may contribute to desired global objectives, such as soil fertility, is in danger of being lost. We tested whether short duration kraaling increases soil fertility across various biomes and countries via a meta-analysis (random... -
A roadmap for present focus and future trends of blockchain technology in the built environment
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Opeoluwa Akinradewo --- University of Johannesburg, South Africa Clinton Aigbavboa --- University of Johannesburg, South Africa Ayodeji Oke --- University of Johannesburg, South Africa David Edwards --- University of Johannesburg, South AfricaBlockchain technology has gained attention across the globe within the last 10 years and has taken centre stage in the financial technology sector. Even though innovation that applies to the construction industry is sometimes different from what is obtainable in... -
Business-driven approach to cloud computing adoption by small businesses
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Martin Adane --- University of Cape Coast, GhanaIn the adoption of technology, there is the need for the alignment of the objectives of the business’s information technology (IT) strategy with the business strategy to ensure effectiveness and overall business performance. This study sought to investigate the effect... -
Thyrotoxic periodic paralysis: a presentation of hyperthyroidism increasing in frequency around the world
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: AMM Ollivry --- Karl Bremer Hospital, South Africa ZJ Joubert --- Karl Bremer Hospital, South AfricaThyrotoxic periodic paralysis (TPP) is a complication of hyperthyroidism commonly seen in Asian populations. It presents as sudden-onset muscle paralysis and hypokalaemia. Diagnosis is often delayed due to the rarity of the disease, the subtlety of the hyperthyroidism and the... -
Exit decision for social venturing entrepreneurs: A conjoint-based study
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Alexander Tetteh Kwasi Nuer --- University of Cape Coast, Ghana Gert van Dijk --- Wageningen University, The Netherlands Hans van Trijp --- Wageningen University, The NetherlandsIn this paper, we seek to study four options of exit decisions and strategies for Social Venture Entrepreneurs. Due to the small number of practicing Social Venture Investors and Entrepreneurs currently using the Social Venture Entrepreneurship model, data were collected... -
Validation of Learning Transfer Inventory System (LTIS) in Cameroon teachers: Measurement invariance and latent mean difference across sex
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bekolo Ngo’a Celestin --- Yibin University, China Tchouchu Emmanuel --- University of Cape Coast, Ghana Kouame Dangui Dorcas --- School of Management and Economics (SME) University of Electronic Science and Technology-Chengdu, ChinaThis study investigated the psychometric properties of the Learning Transfer Inventory System (LTIS) in the Cameroonian education system. A sample of 700 in-service teachers (female = 54.8%; mean age = 36 years, SD = 15.41 years) who completed leadership, management,... -
Psychological abuse, internalising, and externalising behaviours of students: A latent profile analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jing Shuai --- Ningxia University, China Guoying Cai --- Ningxia University, China Liping Guo --- Northwest Normal University, China Mingming HuangThis study aimed to explore the types of psychological abuse and their relationship with internalising and externalising behaviours among Chinese junior middle school students (n = 619; male = 49.1%, female = 50.9%; mean age = 13.5 years, SD =... -
Spatio-temporal variation in phytoplankton community structure in backwaters of the Ketar River, central Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Yadesa Chibsa --- Wachemo University, Ethiopia Seyoum Mengistou --- Addis Ababa University, Ethiopia Demeke Kifle --- Addis Ababa University, EthiopiaThis study assessed the spatio-temporal dynamics of the phytoplankton community in backwaters of the Ketar River, central Ethiopia, in relation to water quality and macrophyte coverage. Phytoplankton samples and physicochemical information were collected at six sites along the river over... -
Forgiveness-related motives: An Angola–Portugal comparison
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Paulo Alves --- Piaget Institute of Viseu, Portugal Joana Neto --- Management and Information Technologies (REMIT), Portucalense University, Portugal Maria da Conceição Azevedo --- University of Trás-os-Montes and Alto Douro, Portugal Félix Neto --- University of Porto, Portugal Etienne Mullet --- Institute of Advanced Studies (EPHE), FranceThis study examined the structure of forgiveness motives expressed by young adults in two different countries: Angola and Portugal. A total of 483 participants (245 Angolans and 238 Portuguese) were presented with the Motivation to Forgive Questionnaire. Exploratory and confirmatory... -
Limnological features and water-quality changes of two Ethiopian Rift Valley lakes, Lake Abaya and Lake Chamo
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Dagne --- National Fishery and Aquatic Life Research Center, Ethiopia H Tadesse --- National Fishery and Aquatic Life Research Center, Ethiopia K Teshome --- National Fishery and Aquatic Life Research Center, EthiopiaWe conducted a study in Lake Abaya and Lake Chamo, the two largest Ethiopian Rift Valley lakes, between 2016 and 2019, to evaluate their limnological features and infer longer-term changes in some water-quality parameters. Data generated through in situ measurements... -
Predictive modelling to determine the attainable moisture content of Alstonia boonei wood using a solar kiln dryer
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Joy Aduralere Ogunsuyi --- Federal University of Technology Akure (FUTA), Nigeria Jacob Mayowa Owoyemi --- Federal University of Technology Akure (FUTA), Nigeria Olusola Samuel Makinde --- Federal University of Technology Akure (FUTA), NigeriaModelling of wood drying is important for predicting the performance and efficiency of solar dryers and to optimise the drying process during each season of the year. The attainable moisture content (MC) of Alstonia boonei wood was studied when dried... -
Calculating soil titratable acidity from routine soil analyses of cultivated South African soils using various model structures
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: VG White --- Citrus Research International, South Africa PJ Raath --- Citrus Research International, South Africa AG Hardie --- Stellenbosch University, South Africa V van der Berg --- Stellenbosch University, South Africa GF Sutton --- Rhodes University, South AfricaSoil titratable acidity (TA) is determined through extraction with an acetate-buffered salt solution (potassium sulphate, K2SO4) and is routinely used to predict the soil lime requirement using the Eksteen method. Soil TA is not always reported by commercial soil testing... -
Time–frequency analysis of cryptocurrency attention
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Zuzana Kučerová --- VSB-Technical University of Ostrava, Czech Republic Svatopluk Kapounek --- Mendel University in Brno, Czech Republic Jarko Fidrmuc --- Mendel University in Brno, Czech RepublicWe present a wavelet analysis of retail investor attention and the daily returns of Bitcoin, Ethereum, and Litecoin at five selected crypto exchanges that identifies the fractal dynamics of the short- and long-term persistent processes. The investors’ attention is proxied... -
The influence of type of sexual partnership on male condom use: empirical evidence from the South African construction industry
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Kamal Yakubu --- University of Cape Town, South Africa Paul Bowen --- University of Cape Town, South Africa Rajen Govender --- University of Cape Town, South AfricaThere are indications that gender has an effect on individual risk factors and pathways to HIV diagnoses and treatment. Furthermore, there is growing recognition that to improve HIV-related health outcomes for men, it is important to understand their experiences and... -
Strengths use in the workplace: A meta-analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: --- School of Labor and Human Resources, Renmin University of China, China --- School of Labor and Human Resources, Renmin University of China, China --- School of Labor and Human Resources, Renmin University of China, China --- School of Labor and Human Resources, Renmin University of China, ChinaThis meta-analysis aimed to clarify the relationship between perceived organisational support and core self-evaluations and strengths use and task performance outcomes utilising a cross-temporal versus time-lagged research design. Drawing on the random effects model, this study combined 44 effect sizes... -
A case for film as an andragogical tool for business schools in Africa: Trends, challenges and prospects
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Ijeoma G. Ukeni --- University of Huddersfield, UKThis article extends the work of existing studies on the development of learners to be ethical leaders in Africa. It makes a case for the use of film as an andragogical tool in the education of adult learners in Africa... -
Stakeholder and jurisdictional influence over IFRS 10's development
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Monica Teixeira De Freitas --- School of Accountancy, South Africa Wayne van Zijl --- School of Accountancy, South Africa Asheer Jaywant Ram --- School of Accountancy, South Africa Warren Maroun --- School of Accountancy, South AfricaThe International Financial Reporting Standards are voluntarily adopted by 167 countries, including countries in Africa, Australasia, Europe and South America. To maintain its legitimacy, the International Accounting Standards Board (IASB) must not be viewed as being unduly influenced by one... -
Quasilattices and complex concept analysis
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: G.N. Nop --- Iowa State University, USA J.D.H. Smith --- Iowa State University, USAQuasilattices are algebraic structures that comprise a semilattice-ordered system of lattices. In this paper, certain quasilattices (that are characterized abstractly by a local completeness property) provide an extension of Wille's concept analysis to the study of complex systems that function... -
Stone-Weierstrass approximation revisited
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Anatoly G. Kusraev --- Southern Mathematical Institute of the Vladikavkaz Science Center of the Russian Academy of Sciences, Russia Semën S. Kutateladze --- Sobolev Institute of Mathematics, Siberian Branch of the Russian Academy of Sciences, RussiaThe aim of the present article is to extend the Stone-Weierstrass theorem to functions ranging in a lattice normed space and admitting order rather than topological approximation. We proceed with the machinery of Boolean-valued transfer from lattice normed space to... -
10 years of the Africa Journal of Management: A bibliometric analysis
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Katia M. Galdino --- Georgia Southern University, USA Diane Lawong --- University of Alabama at Birmingham, USAThe Africa Journal of Management (AJOM) is devoted to the advancement of management theory, scholarship, practice, service, and education in or about Africa and for the benefit of Africa. The journal was launched at the 2014 Africa Academy of Management... -
Therapeutic inertia: a retrospective examination of inpatient management for type 2 diabetes mellitus at a South African regional hospital during a singular hospitalisation
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: KA White --- Harry Gwala Regional Hospital, South Africa S Pillay --- King Edward VIII Hospital, South Africa -
Passion types and life satisfaction among older adult Moroccans: Reliability of scores and mediation by resilience
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marei Ahmed --- Ajman University, United Arab Emirates Rasha M Abdelrahman --- Ajman University, United Arab Emirates Abderrahim Benlahcene --- Ajman University, United Arab EmiratesWe aimed to examine the factor structure of passion, resilience, and life satisfaction scales, as well as the mediating role of resilience in the relationship between different types of passion and life satisfaction among older Moroccan distance runners To assess... -
Form of the solutions of difference equations via Lie symmetry analysis and Fibonacci numbers
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Melih Göcen --- Zonguldak Bülent, Ecevit University, Turkey Mensah Folly-Gbetoula --- University of the Witwatersrand,In this paper, we give the form of the solutions of the following rational difference equation -
Does self-compassion protect adolescents with non-suicidal self-injury from developing borderline features? A two-wave longitudinal study
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Diogo Carreiras --- University Coimbra, Portugal Paula Castilho --- University Coimbra, Portugal Marina Cunha --- University Coimbra, PortugalBackground: Adolescence is a vulnerable developmental stage for the onset of non-suicidal self-injury (NSSI) and borderline features, which are related psychological phenomena. Self-compassion reflects a sensitivity to own suffering and a motivation to relieve it, consisting of a more positive... -
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, TunisiaAnthropogenic 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... -
Inverse problem of determining the coefficient in a sixth order Boussinesq equation with additional nonlocal integral condition
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.S. Farajov --- Azerbaijan State Pedagogical University, Azerbaijan M.J. Huntul --- Jazan University, Saudi Arabia Yashar T. Mehraliyev --- Baku State University, AzerbaijanThe work is devoted to the study of the solvability of the inverse boundary value problem with an unknown time depended coefficient for a sixth-order Boussinesq equation with an additional integral condition of the first kind is investigated. First, the... -
Diet preference of black rhinoceros Diceros bicornis at Welgevonden Game Reserve, South Africa, across seasons
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Joti Daya --- Nelson Mandela University – George Campus, South Africa Hervé Fritz --- Nelson Mandela University – George Campus, South Africa Jan A Venter --- Nelson Mandela University – George Campus, South AfricaDiet preference of the black rhinoceros Diceros bicornis was determined in Welgevonden Game Reserve (WGR), located in the Waterberg region of Limpopo Province, South Africa. Fieldwork was conducted in the dry, early wet and late wet seasons. Diet preference was... -
Navigating social and academic isolation: a qualitative exploration of American university students’ perspectives and experiences early in the COVID-19 pandemic
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Ashlynn Lawston --- California Polytechnic State University, USA Luna Lowsky --- California Polytechnic State University, USA McKenna Ross --- California Polytechnic State University, USA Christine Hackman --- California Polytechnic State University, USAObjective: To qualitatively explore the multifaceted impacts of the early months of the COVID-19 pandemic on the lives of American university students. -
The self-reported well-being of children in Namibia: Testing hedonic and eudaimonic instruments
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shelene Gentz --- University of Namibia, Namibia Mònica Ruíz Casares --- Toronto Metropolitan University, Canada Ferran Casas --- Universidad Andrés Bello, ChileAlthough research on hedonic and eudaimonic children’s well-being is growing, these constructs need to be understood within the African context. In this study we validated two psychometric scales with 10 and 12-year-old children (n = 2 035) in the Namibian... -
Morphological variations in the African palm weevil, Rhynchophorus phoenicis (F) (Coleoptera: Curculionidae), in Kenya and Uganda
Item type: Journal Article • Journal: African Zoology • Authors: James P Egonyu --- International Centre of Insect Physiology and Ecology, Kenya Alfonce Leonard --- Tanzania Agricultural Research Institute (TARI) Ukiriguru Centre, Tanzania Chrysantus Mbi Tanga --- International Centre of Insect Physiology and Ecology, Kenya Sevgan Subramanian --- International Centre of Insect Physiology and Ecology, KenyaWe investigated morphological differences in the African palm weevil (Rhynchophorus phoenicis) from Kenya (Busia and Kwale) and Uganda using a LEICA EZ4HD stereo microscope and an absolute digimatic caliper. Ten pronotal colour patterns were recorded, of which two (brown with... -
Cape genet Genetta tigrina diet in the Albany Thicket Biome, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Axola Plaatjie --- University of Fort Hare, South Africa Filipe Carvalho --- University of Fort Hare, South Africa Rabelani Marikhele --- University of the Witwatersrand, South Africa Zimkitha JK Madikiza --- University of the Witwatersrand, South Africa Emmanuel Do Linh San --- University of Fort Hare, South AfricaThe diet of the Cape genet Genetta tigrina is only well known in the coastal forests of South Africa, where either arthropods or small mammals are their dominant prey. Here, we aimed to demonstrate this species’ opportunistic behaviour by investigating... -
An inverse problem for pseudoparabolic equation: existence, uniqueness, stability, and numerical analysis
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Kh. Khompysh --- Al-Farabi Kazakh National University, Kazakhstan M.J. Huntul --- Jazan University, Saudi Arabia M.K. Shazyndayeva --- Al-Farabi Kazakh National University, Kazakhstan M.K. Iqbal --- Government College University, PakistanIn this paper, we study an inverse problem for a linear third-order pseudoparabolic equation. The investigated inverse problem consists of determining a space-dependent coefficient of the right-hand side of a pseudoparabolic equation. As an additional information a final overdetermination condition... -
Emerging trends in FinTech and financial inclusion: A review and bibliometric analysis
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Prihana Vasishta --- Punjab Engineering College (Deemed to be Univerisity), India Anju Singla --- Punjab Engineering College (Deemed to be Univerisity), IndiaFinTech has enabled various financial institutions to reach a larger and more diverse customer base, thus making the unbanked population financially inclusive. This paper aims to systematically review academic papers on Financial Inclusion and FinTech. A combination of these two... -
The democratization of digital currency in Nigeria: A sentiment analysis of eNaira app usability
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sunday Adewale Olaleye --- Jamk University of Applied Sciences, Finland Kwami Ahiabenu --- Global Centre for Fintech Innovations, Olugbenga Ayo Ojubanire --- Euromed University of Fes, MoroccoGlobally, Central Bank Digital Currency (CBDC) is receiving a lot of attention in digital currency deliberations since it is at the top of the agenda of almost every central bank today. Although there is a growing body of literature on... -
Diet of a Maghreb Owl Strix mauritanica individual at Kahf Lakhal cave on Jbel Moussa, northern Morocco
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdeslam Rihane --- , Morocco Abdelmottalib Nahli --- University of Hassan II Casablanca, Morocco EL-Mustapha Laghzaoui --- , Morocco Youssef Dbiba --- , Morocco Mohamed Radi --- , Morocco Mohamed Dakki --- , Morocco El Hassan El Mouden --- , Morocco Rhimou El Hamoumi --- University of Hassan II Casablanca, MoroccoThe diet of a single Maghreb Owl Strix mauritanica (family Strigidae) was examined within its natural habitat at Kahf Lakhal cave on Jbel Moussa, a mountain in northern Morocco. The two distinct batches of pellets collected contained a total of... -
Performance of Green vis-à-vis Red EU securities
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Ferdinantos Kottas --- National University of Ireland Maynooth, IrelandThis research compares the performance of Green (eco-friendly) versus Red (eco-enemy) returns for EU securities. Green securities are the stocks of companies whose primary business activities focus on being relatively beneficial to the environment, while Red stocks are associated with... -
Evidence-based global yield benchmarks in unthinned industrial plantation eucalypts
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Robert Neil Pallett --- Institute of Commercial Forestry Research, South AfricaThere is increasing global demand for wood and wood products for a growing diversity of applications. Even-aged plantation forests are efficient in providing goods and services from relatively small areas of land. Eucalypt plantations have been an important component of... -
Career interest on calling: The chain mediating role of future work self and engaged learning
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bin Liu --- Northeast Normal University, China Chunna Hou --- Northeast Normal University, ChinaWe investigated the role of future work self and engaged learning in the relationship between career interest and career calling. Students (n = 641; female = 235; mean age = 18.96 years, SD = 1.01 years) complete the Career Interest... -
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 AfricaUsing 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... -
Molluscicidal effects of Persicaria senegalensis on terrestrial snails Cornu aspersum in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MC Mathole --- Sefako Makgatho Health Sciences University, South Africa PH King --- Sefako Makgatho Health Sciences University, South AfricaCornu aspersum is an invasive terrestrial snail pest of the family Helicidae. In South Africa, where the snail causes significant crop losses in viticulture areas, synthetic molluscicides are used to control them. However, the latter negatively affects both those who... -
A new diatom-based multimetric index (MMI-D) for ecological health monitoring in the Tropical Rift Valley Lake (Lake Hawassa, Ethiopia)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TW Gelaw --- Debre Markos University, Ethiopia S Mengistou --- Addis Ababa University, Ethiopia PA Barker --- Lancaster University, United KingdomMultimetric assessment is one of the important tools for diagnosing, detecting and measuring impairment in ecosystem function in lentic ecosystems. It enhances detection capabilities across a broader variety of stressors and offers a more complete picture of ecological conditions than... -
Phenotypic variation and association of agronomic traits in tepary bean genotypes under drought-stress and non-stress conditions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Saul Eric Mwale --- School of Agricultural, Earth and Environmental Sciences, African Centre for Crop Improvement (ACCI), University of KwaZulu-Natal, South Africa Hussein Shimelis --- School of Agricultural, Earth and Environmental Sciences, African Centre for Crop Improvement (ACCI), University of KwaZulu-Natal, South Africa Wilson Nkhata --- School of Agricultural, Earth and Environmental Sciences, African Centre for Crop Improvement (ACCI), University of KwaZulu-Natal, South Africa Abel Sefasi --- Lilongwe University of Agriculture and Natural Resources, Malawi Isaac Fandika --- Kasinthula Agricultural Research Station, Malawi Jacob Mashilo --- School of Agricultural, Earth and Environmental Sciences, African Centre for Crop Improvement (ACCI), University of KwaZulu-Natal, South AfricaGenetic variation for economic traits associated with drought adaptation is a prerequisite for developing climate-smart crop varieties, including tepary bean (Phaseolus acutifolius A. Gray). This study aimed to assess the magnitude of genetic variation and the relationship of agronomic traits... -
Accessibility information and rhetoric: an evaluation of the website communications of three New Zealand hotels
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Eshwar Atul Shetty --- Auckland University of Technology, New Zealand Alison McIntosh --- Auckland University of Technology, New ZealandPrevious scholarship highlights the physical, social and informational barriers to participation in tourism and hospitality for people with disabilities. The provision of reliable and up-to-date information, especially via websites, is crucial to ensuring accessibility and inclusion in hospitality services and... -
Subjective perception of economic policy uncertainty and ESG performance: Evidence from China
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Guangchen Li --- Beijing Wuzi University, China Bokun Hei --- Beijing Wuzi University, China Qianlong Ma --- Beijing Wuzi University, China Haijun Wang --- Beijing Wuzi University, ChinaThis paper explores the relationship between subjective perception of economic policy uncertainty (SPEPU) and ESG performance. We find that SPEPU could deteriorate ESG performance, especially corporate social performance and that this negative effect works through increasing financialization and weakening internal... -
Evaluation of the effect of soil acidity amelioration on maize yield and nutrient interrelationships using stepwise regression and nutrient vector analysis
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: H.G. Jansen van Ransburg --- Department of Plant Production and Soil Science, University of Pretoria, Pretoria 0002, South Africa A.S. Claassens --- Department of Plant Production and Soil Science, University of Pretoria, Pretoria 0002, South Africa D.J. Beukes --- ARC-lnstitute for Soil, Climate and Water, Private Bag X79, Pretoria 0001, South AfricaThe interrelationships between elemental content of selected soil and leaf nutrients and maize grain yield were evaluated in a liming experiment conducted on a Hutton and Oakleaf soil in a resource-poor farming area in the Mpumalanga Province of South Africa... -
Validity and reliability of the Compassion Fatigue Short Scale among nursing interns
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Li-Juan Yi --- Hunan Traditional Chinese Medical College, China Ting Shuai --- Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, China Ya Li --- Hunan Traditional Chinese Medical College, China Guo-Hao Wang --- Tangshan Polytechnic University, China Hai-Yan Long --- Hunan Traditional Chinese Medical College, China Hang Lin --- Hunan Traditional Chinese Medical College, China Xu Tian --- Chongqing Traditional Chinese Medicine Hospital, China Maria F. Jiménez-Herrera --- Universitat Rovira i Virgili, SpainWe aimed to determine the reliability and validity of scores from the Chinese Compassion Fatigue Short Scale (CFSS) for nursing interns (n = 229; female = 88.2%, mean age = 20.34 years, SD = 0.968 years). The nursing interns completed... -
Review of Arctic and Pacific Marenzelleria (Annelida: Spionidae), with new records and comments on Spio gorbunovi Averincev, 1990
Item type: Journal Article • Journal: African Zoology • Authors: Vasily I Radashevsky --- , Russia Victoria V Pankova --- , RussiaHere we summarise and map available records of the spionid polychaetes Marenzelleria spp. from the Arctic and Pacific Oceans based on morphology and analysis of sequences of five gene fragments (COI, 16S, 18S, 28S and Histone 3). We define for... -
Genotype × environment interaction analysis for grain yield of bread-wheat genotypes under drought-prone environments
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Yared Semahegn --- African Centre for Crop Improvement, University of KwaZulu-Natal, South Africa Hussein Shimelis --- African Centre for Crop Improvement, University of KwaZulu-Natal, South AfricaThe analysis of genotype × environment interaction (GEI) is crucial for distinguishing the performance of genotypes across different environments. The aim of this study was to investigate the GEI for grain yield in bread wheat and to establish selection criteria to enhance... -
Effects of eucalypt and black wattle biochars from vacuum pyrolysis on sandy soil quality and cauliflower yield
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S Mncedi --- Stellenbosch University, South Africa JF Görgens --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa AG Hardie --- Stellenbosch University, South AfricaWoody invasive alien plants (IAPs), including black wattle (Acacia mearnsii De Wild.) and eucalypt species (Eucalyptus camaldulensis Dehnh.), present significant environmental challenges in South Africa. Biochar from these plants can enhance soil carbon sequestration and fertility. This study examines the... -
Evaluation of antibacterial and antioxidant potentials of epidermal mucus of Clarias batrachus L. from freshwater bodies of India and its biochemical characterisation
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MR Patel --- Veer Narmad South Gujarat University, India JK Barot --- Veer Narmad South Gujarat University, IndiaThe epidermal mucus of fish serves as a vital line of defence against pathogens and oxidative stressors in aquatic environments. In this study, we evaluated the antibacterial and antioxidant properties of the epidermal mucus of Clarias batrachus L., commonly known... -
Gender preferences in cryptocurrency systems: Sentiment analysis and predictive modelling
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Samer Muthana Sarsam --- School of Management, Coventry University, UK Ahmed Ibrahim Alzahrani --- Community College, King Saud University, Saudi Arabia Hosam Al-Samarraie --- School of Design, University of Leeds, UK Fahad Alblehai --- Community College, King Saud University, Saudi ArabiaThis study explored the role of gender preferences in cryptocurrency investments using sentiment analysis. X (Twitter) users’ gender (male/female) together with relevant sentiments (positive/negative) were extracted and investigated in this study. The Latent Dirichlet Allocation technique was utilised to model... -
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, KoreaThis 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... -
On the analysis and integrability of the time-fractional stochastic potential-KdV equation
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nida Zinat --- Government College University, Pakistan Akhtar Hussain --- The University of Lahore, Pakistan A.H. Kara --- University of the Witwatersrand, South Africa F.D. Zaman --- Government College University, PakistanThis study investigates the invariance properties of the time-fractional stochastic potential-KdV (FSP-KdV) equation, intending to enhance our understanding of the dynamics associated with nonlinear photon and optical soliton propagation. The application of the Lie group analysis method enables the derivation... -
Spatial environmental variability shapes the diversity of bottom ecosystems on the western Gulf of Guinea shelf
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Denechaud --- Institute of Marine Research (IMR), Norway E Dovlo --- Fisheries Scientific Survey Division (FSSD), Ghana T Joanny --- Centre de Recherches Océanologiques (CRO), Côte d’Ivoire VS Osei --- Fisheries Scientific Survey Division (FSSD), Ghana L Buhl-Mortensen --- Institute of Marine Research (IMR), Norway A Staby --- Institute of Marine Research (IMR), NorwayThe western Gulf of Guinea is characterised by seasonal upwellings and hosts a large diversity of marine species. Although the assemblages of bottom fishes and benthic organisms are periodically assessed, there has been little research investigating these in tandem. We... -
Triazole sensitivity among South African Puccinia graminis f. sp. tritici isolates
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Isabella du Toit --- University of the Free State, South Africa Botma Visser --- University of the Free State, South Africa Lisa A Rothmann --- University of the Free State, South Africa Willem HP Boshoff --- University of the Free State, South AfricaFungicide applications are important in the successful production of winter cereals in South Africa (SA). While fungicide treatments are critical for crop protection, genetic selection and inheritance of fungicide resistance will lead to a decline in disease control. In this... -
The roadblocks to progress: A comprehensive study on the relationship between regional institutional quality and firms’ innovation of sub-Saharan African nations
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abel Dula Wedajo --- University of Sanya, People’s Republic of China Xiao Huilin --- University of International Business and Economics (UIBE), People’s Republic of ChinaThis study examines the impact of regional institutional quality (level two) on firm-level innovation (level one) in Sub-Saharan Africa (SSA), where cultural and institutional diversity challenges frameworks derived from homogeneous contexts. Analyzing 7,578 firms across Ethiopia, Kenya, Rwanda, Tanzania, Uganda,... -
Real earnings management practices and financial performance: The moderating role of whistleblowing policy
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Sulaiman Ademola Oreshile --- Lagos State University, Nigeria Yusuf Adeneye --- Universiti Malaysia Kelantan, Malaysia -
How does investor sentiment affect the Korean premium in the Bitcoin market?
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Joon Chae --- Seoul National University, Republic of Korea Kyounghun Bae --- Hanyang University, Republic of Korea Hyoung-Goo Kang --- Hanyang University, Republic of Korea Bonha Koo --- Chungnam National University, Republic of KoreaWe examine how investor emotions and Bitcoin price influence each other using intraday data and textual analysis. We extract emotions from a popular online chatting window at one of the largest cryptocurrency exchanges in Korea. To control for global factors,... -
Diet composition of the Marsh Owl Asio capensis at the Merja Zerga coastal lagoon, northwestern Morocco
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Abdeslam Rihane --- Regional Center for Education and Training (CRMEF) Casablanca-Settat, Morocco Sidi Imad Cherkaoui --- Institut Scientifique, Research Center: Geophysics, Natural Patrimony and Green Chemistry (GEOPAC), MoroccoThe diet of the Marsh Owl Asio capensis (family Strigidae) was examined at Merja Zerga coastal lagoon and wetland on the Gharb Plain, northwestern Morocco. The analysis was carried out on several small batches of regurgitated pellets, collected in January... -
Stereotypical Home Making: Producing Subjects through Spatial Stories in Afronovelas
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Daddy Dibinga Kalamba --- Techniche Universität, Germany Séverine Marguin --- Techniche Universität, GermanyIn recent decades, television series in Senegal and Côte d'Ivoire have emerged as influential mass media forms with broad audiences, driven by a dynamic and rapidly evolving industry in these countries. In this paper, we study series belonging to the... -
Uphicothonzulu ngokwenkcazobungcali yenkcubekontlalo ngokobuhlanga kwibali elifutshane lesiXhosa elithi Umgcini-mangcwaba
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Mlamli Diko --- University of South Africa (UNISA),Iiyantlukwano ngokobuhlanga kunye nocalucalulo zibonisa ukunyathelela phezulu, nto leyo ethi ithintele ubumbano nentsebenziswano phakathi kweentlanga ngeentlanga kwintlalo nenkcubeko yoMzantsi Afrika. Nakubeni umgaqonkqubo wocalucalulo wabhangiswa ngomnyaka we1994, abaNtsundu kunye namaNgesi abonakalisa ukungqubana nokujongana ngezikhondo zamehlo kwiimeko ezithile njengoko kuvela kwibali elifutshane... -
Blockchain technology in healthcare within the global south: mapping the area and developing a research scenario
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Josue Kuika Watat --- University of Oslo, Norway Ebenezer Agbozo --- Ural Federal University, Russia Rania El-Gazzar --- University of Agder, NorwayAfrica’s healthcare systems face profound structural challenges, including fragmented infrastructure, systemic data vulnerabilities, and unreliable medical supply chains, necessitating innovative, context-specific solutions. Blockchain technology has emerged as a transformative tool in global healthcare, yet research remains disproportionately focused on high-income... -
Innovating financial metrics for SME development: A factor-based analysis of Chinese enterprises
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Jiaqi Wang --- Universiti Malaya, Malaysia Wee-Yeap Lau --- Universiti Malaya, Malaysia Angathevar Baskaran --- Universiti Malaya, MalaysiaThis study investigates the role of innovative financial performance metrics in promoting the sustainable development of small and medium-sized enterprises (SMEs) in China. Responding to the limitations of single-indicator financial assessments, the research develops a composite Financial Performance Evaluation (FPE)... -
Intrapopulation isotopic niche structure in mammalian carnivores and herbivores across contrasting habitats
Item type: Journal Article • Journal: African Zoology • Authors: Chanel Lewis --- University of the Free State, South Africa Runè van der Merwe --- University of the Free State, South Africa Chabi AMS Djagoun --- University of Abomey-Calavi, Benin Etotépé A Sogbohossou --- University of Abomey-Calavi, Benin Daryl Codron --- University of the Free State, South AfricaNatural communities exhibit ecological gradients that result in a variety of competitive interactions and variations in niche patterns. Changes in resource availability affect the size of a species’ niche: it expands when a variety of resources are abundant and contracts... -
Macro-level determinants of research output in Nigerian knowledge institutions: A case study of ICT researchers
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bolanle A. Adewusi --- , Canada Oluseye Jegede --- University of Johannesburg, South AfricaThis study explores the factors that influence ICT research productivity across Nigerian universities and government research agencies. Using a mixed-methods approach, the research combines conceptual analysis with quantitative techniques, drawing on the PESTLE model, the Entrepreneurship Ecosystem, and the Triple... -
Assessment of the ecological integrity and fish community structures of the uMngeni River, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Pumla Dlamini --- University of KwaZulu-Natal, South Africa Colleen T Downs --- University of KwaZulu-Natal, South Africa Matthew Burnett --- University of KwaZulu-Natal, South Africa Gordon O’Brien --- University of KwaZulu-Natal, South AfricaThe uMngeni River is economically important as it provides water to two of the largest cities in KwaZulu-Natal Province, South Africa. As such, protecting the river and the life within it is also of great importance. In this study, we... -
Quality assessment of groundwater in a crystalline semi-urbanised environment (Lefock watershed, Cameroon)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Lauric Tontsa --- University of Dschang, Cameroon Emile Temgoua --- University of Dschang, Cameroon Obina Chigoziem Akakuru --- Federal University of Technology, Nigeria Hara Toukou --- University of Dschang, Cameroon Guillaume Bertrand --- Univerité de Bourgogne Franche-Comté, France Patrick Lachassagne --- Université de Montpellier, FranceThis study provides an assessment of the hydrogeochemical processes influencing shallow groundwater quality in the Lefock watershed (crystalline area, Cameroon). Seventeen groundwater samples were collected in May 2021 during the rainy season. These samples were analysed for their physical characteristics... -
Managing land use transitions to safeguard transhumance corridors in arid eastern Morocco: challenges and adaptive strategies
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Imane Hamzaoui --- Hassan II Agronomy and Veterinary Medicine Institute, Morocco Mohamed Chikhaoui --- Hassan II Agronomy and Veterinary Medicine Institute, Morocco Nicolas Faysse --- , France Mohamed Taher Sraïri --- Hassan II Agronomy and Veterinary Medicine Institute, MoroccoThe conversion of rangelands and barren lands into agricultural use destabilises fragile pastoralism. This study examines the drivers and impacts of this transformation on pastoralism in Tinghir province, Morocco, using geospatial analysis, semi-structured interviews with pastoralists, discussions with officials and... -
An estimation of liquidity effects of market microstructure changes in the Indian agricultural commodity market
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Sreekha Pullaykkodi --- Manipal School of Commerce and Economics, Manipal Academy of Higher Education, IndiaThe effects of market microstructure change on the liquidity of the Indian agricultural commodity market are examined using 18 years of data by dividing it into different sub-samples. The study examines variations in market liquidity by conducting a year-wise analysis,... -
Stability in an unbounded domain of a Timoshenko system without the second spectrum
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohammad M. Al-Gharabli --- King Fahd University of Petroleum and Minerals, Saudi Arabia Adel M. Al-Mahdi --- King Fahd University of Petroleum and Minerals, Saudi Arabia Aissa Guesmia --- Université de Lorraine, 3 Rue Augustin Fresnel, FranceThe present paper deals with the stability, in the whole line ℝ, of the so-called truncated version for the Timoshenko system derived, according to significant physical and historical observations, by Elishakoff [11]. This new system gives a version of a... -
Influence of land use and cover on the spatio-temporal analysis of the energy balance in a conservation unit
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Liliane Moreira Nery --- Institute of Science and Technology, Brazil Gabriela Gomes --- Institute of Science and Technology, Brazil Nícholas de Paula Nicomedes --- Institute of Science and Technology, Brazil Bruno Pereira Toniolo --- Institute of Science and Technology, Brazil Raphael de Vicq Ferreira da Costa --- Department of Earth Sciences at the University of Minho, Brazil Darllan Collins da Cunha e Silva --- Institute of Science and Technology, BrazilThis study employs Landsat satellite imagery, interpolated meteorological data and the Surface Energy Balance Algorithm for Land (SEBAL) to estimate the energy balance and evapotranspiration (ET) within the Itupararanga Environmental Protection Area (Itupararanga EPA), located in the Atlantic Forest biome... -
The role of STI governance in increasing the efficiency of the University of Tehran Science and Technology Park with an emphasis on its internationalization
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bahareh Heidary --- Governance Faculty, University of Tehran, Tehran, Iran, Maryam Afkhami --- Governance Faculty, University of Tehran, Tehran, Iran,The governance of science, technology, and innovation (STI) is increasingly recognized as a key driver for international collaboration and competitiveness. To ensure effective STI governance, it is essential to understand internationalization parameters, their impact, and the strategic frameworks that enable... -
Computational analysis of Orientalist discourse in social media: A case study of Twitter
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Qiming Dong --- Universiti Putra Malaysia, Malaysia Shasha Zhang --- Hunan University of Information Technology, People’s Republic of China Megat Al Imran Yasin --- Universiti Putra Malaysia, Malaysia Chow Ow Wei --- Universiti Putra Malaysia, MalaysiaThe paper presents ORIENT-Net as a tool that processes texts in terms of their orientalist views. This is done by the detection and classification of such texts on social media Twitter. An Orientalist view of the East can see the... -
Sand knobwood Zanthoxylum leprieurii as a keystone resource for birds in Nigeria: insights from observational counts and proximate analysis
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Adewale G Awoyemi --- Forest Center, International Institute of Tropical Agriculture, Nigeria Ademola D Ajayi --- Forest Center, International Institute of Tropical Agriculture, Nigeria Olukunle E Olasupo --- Forest Center, International Institute of Tropical Agriculture, Nigeria Olufemi P Olubodun --- Forest Center, International Institute of Tropical Agriculture, Nigeria Taiwo Adams --- Forest Center, International Institute of Tropical Agriculture, Nigeria Mary Oyegbami --- Forest Center, International Institute of Tropical Agriculture, Nigeria Omobamidele A Awoyemi --- Forest Center, International Institute of Tropical Agriculture, NigeriaThis study investigated the importance of sand knobwood Zanthoxylum leprieurii (family Rutaceae) fruits as a food source for birds in the Tree Heritage Park, Ibadan, Nigeria. We conducted focal observations over three years (2018, 2019, and 2024) during peak fruiting... -
Individual differences in technological readiness and the adoption of solar dryers: The case of horticultural smallholder farmers in Northern Tanzania
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Dismas Jerome Kimaro --- Nelson Mandela African Institution of Science and Technology (NM-AIST), Tanzania Thomas Kivevele --- Nelson Mandela African Institution of Science and Technology (NM-AIST), Tanzania Anthony Nyangarika --- Nelson Mandela African Institution of Science and Technology (NM-AIST), TanzaniaAdoption of solar dryers among smallholder farmers in developing countries remains low, despite their proven potential to enhance food security. While prior studies emphasize techno-socio-economic barriers, they often overlook individual psychological traits that likely shape adoption behaviour, assuming uniform adoption... -
Exploring staff adoption of blockchain technology in higher education: Insights from AHP analysis
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Preeti Bhaskar --- Department of Management and Marketing, College of Banking and Financial Studies, Oman Chandan Kumar Tiwari --- Department of Economics and Business Administration, University of Technology and Applied Sciences, Oman Mujeebudheen Khan --- University of Technology and Applied Sciences, Oman Ananth Anthonisamy --- Department of Economics and Business Administration, University of Technology and Applied Sciences, Oman Padma Losani Dayalan --- Department of Economics and Business Administration, University of Technology and Applied Sciences, OmanBlockchain technology has the potential to eradicate fraud, improve institutional legitimacy, and increase efficiency, security, and transparency. Despite its potential, the adoption of blockchain technology among staff in higher education institutions (HEIs) remains limited, particularly in emerging economies like Oman,...
