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Cable Yarding in Southern Africa: An Analysis of its Productivity and Possible Procedure for its Improvement
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.M. de Laborde --- Institute for Commercial Forestry Research, South AfricaThe demand for timber in southern Africa is increasing and this is resulting in the afforestation of areas which require cable yarding when harvested. The demand for cable yarders, essentially fixed skylines, is therefore increasing rapidly. Stress is being placed... -
Role of Eucalypt Plantations in Timber Supply and Forest Conservation in Sub-Saharan Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: A. P.G. Schönau --- Institute for Commercial Forestry Research, South AfricaThe role of eucalypt plantations in timber supply and forest conservation in Sub-Saharan Africa was investigated. The annual destruction of 11,5 million ha of tropical forest is highlighted, the various causes indicated and the controversy whether fast-growing plantations and woodlots... -
The Impact of Harvesting Operations on Timber Quality: Causes and Remedies
Item type: Journal Article • Journal: South African Forestry Journal • Authors: Walter Warkotsch --- Forest Engineering Technology, Faculty of Forestry,Forests are devastated daily to satisfy the world's timber demands. Tropical forests throughout the world are exploited and endangered. An obligation therefore exists to avoid damage to timber and minimise waste wherever possible. -
A preliminary investigation of woody plant increase in the western Transvaal and implications for veld assessment
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: MargaretH. Friedel --- Division of Wildlife and Rangelands Research, AustraliaThe relationships between tree density and indices of pasture and soil condition were examined in Western Transvaal grasslands where Acacia karroo had increased following disturbance. The correlation between tree density and pasture condition was not linear, indicating a threshold in... -
Plant palatability assessment and its implications for plant‐herbivore relations
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N. Owen‐Smith --- Resource Ecology Group, Department of Zoology, S.M. Cooper --- Resource Ecology Group, Department of Zoology,An objective method used to assess the palatability of the foliage of woody plant species to kudus, impalas and goats is described. Observations were made on the feeding behaviour of tame animals in the Nylslvey Nature Reserve in northern Transvaal... -
Climatic and edaphic conditions at eragrostis lehmanniana nees sites in Arizona, USA and the cape province, RSA and potential seeding sites in Southern Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: JerryR. Cox --- U.S. Department of Agriculture, USA J.L. Stroehlein --- Soil and Water Department, USA J.H. Fourie --- , Republic of South AfricaClimatic and edaphic conditions at Eragrostis lehmanniana Nees sites in southeastern Arizona, USA were compared with those in the Cape Province, RSA to determine a range of conditions under which the species might be expected to establish and persist in... -
A preliminary investigation of area‐selective grazing in the Southern Tall Grassveld of Natal
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G.P. Hatch --- Department of Grassland Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaThe consequences of area‐selective grazing by cattle under three stocking rates and at two sites in the Southern Tall Grassveld of Natal were investigated. Soil compaction was found to significantly distinguish area‐selected patches from non‐selected veld (P≤0.01), while non‐significant differences... -
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... -
The use of degradation gradients for the assessment and ecological interpretation of range condition
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: O.J.H. Bosch --- Department of Plant and Soil Sciences, Republic of South Africa H.G. Gauch --- Department of Soil, Crop and Atmospheric Sciences, United States of AmericaMultivariate procedures were used to subdivide the southern African climatic climax grasslands of the 700–800‐mm rainfall zone into relatively homogeneous grazing areas. A degradation gradient was constructed for each of these areas. This was done by means of centred PCA... -
Physical and clay mineralogical properties of some Natal and eastern Transvaal soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. Cass --- , Australia M.A. Johnston --- Department of Agriculture and Water Supply,Soils, collected from the south-eastern Transvaal, Natal north coast and the more arid areas of the Natal interior, were examined using physical, chemical and mineralogical methods. Most of the soils were associated with particular management problems such as poor internal... -
Causes, adverse effects and control of soil compaction
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. T.P. Bennie --- Department of Soil Science, G.N. Krynauw --- Department of Agriculture,The causes, adverse effects and control of soil compaction, with special reference to Southern African conditions, are reviewed. The main causes for soil compaction are the well-rounded and -sorted fine sand fraction of the aeolian sandy soils combined with compression... -
The effect of particle-size distribution on the suitability of sandy soils for sports fields
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: D.J. Nel --- Department of Soil Science, Republic of South AfricaThe compaction of the topsoil layer of sports fields can modify soil properties such as permeability, resistance to root penetration, aeration and water-holding capacity. The feasibility of predicting these properties from particle size distribution parameters of sandy soils was investigated... -
Changes in a Doveton clay loam after 12 years of direct-drill maize production
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.B. Mallett --- , Republic of South Africa P.M. Lang --- , Republic of South Africa A.J. Arathoon --- , Republic of South AfricaAfter 8 years of direct-drill maize production at Cedara on a Hutton/Doveton clay loam (Typic Plinthustult) it was found that the top 120-mm layer had become somewhat denser and that organic carbon levels in the top 20 mm were higher... -
Influence of intensive irrigation and cultivation on selected soil properties: Arid southern Namibia
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: E. Verster --- Department of Geography, Republic of South Africa T.H. van Rooyen --- Department of Geography, Republic of South AfricaThe effect of long-term (25 years) intensive irrigation on selected soil properties of the Hardap Irrigation Scheme was determined by comparing soil profiles in irrigated and adjacent non-irrigated areas. The major differences detected between five soil pairs were rubification of... -
A procedure for determining the minimum bulk density of soils
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A. D.J. Da C. Nhantumbo --- Department of Soil Science, Republic of South Africa A. T.P. Bennie --- Department of Soil Science, Republic of South AfricaThe purpose of this study was to establish a procedure and develop equipment for determining the minimum bulk density of soils. Six soils with silt-plus-clay contents varying between 8 and 41% were selected. The determination consisted of pouring the soil... -
The effect of soil compaction on the water retention characteristics of soils in forest plantations
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: CW Smith --- , MA Johnston --- , SA Lorentz --- ,A study was carried out to evaluate the relative effects of soil compaction on the water retention characteristics of a range of soils in forest plantations in the summer rainfall regions of South Africa. In all cases compaction resulted in... -
Soil compaction by tractor tillage in horticultural fields at Molelwane research farm, Mafikeng, North West Province
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: S.A. Materechera --- Crop Science Department, Faculty of Agriculture, Science & Technology, Republic of South Africa K. Gaobope --- Crop Science Department, Faculty of Agriculture, Science & Technology, Republic of South AfricaThe study was prompted by concerns that soil compaction in horticultural fields at the University research farm was limiting the performance of fruit trees and vegetable crops after fifteen years of conventional tillage with tractors. Soil penetrometer resistance and bulk... -
THE ENERGY BASE OF AQUATIC SYSTEMS IN SOUTH AFRICA
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: B.R. Allanson --- Institute for Freshwater Studies, Department of Zoology, and Entomology, South AfricaThe energy base of reservoirs and lakes is examined. There is considerable variation in specific productivity and photosynthetic capacity depending on trophic condition and whether algae or suspensoids reduced transparency. While limnetic production is important in freshwater, it is not... -
BREEDING BEHAVIOUR OF THE MPASA, OPSARIDIUM MICROLEPIS (GUNTHER) (PISCES:CYPRINIDAE), IN LAKE MALAWI
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D. Tweddle --- Fisheries Department, MalawiObservations on the breeding behaviour of mpasa, a commercially valuable cyprinid endemic to Lake Malawi, were conducted in the Bua and North Rukuru Rivers. The spawning run takes place over an extended period during and after the rains, with an... -
AN ASSESSMENT OF THE GROWTH RATE OF MPASA, OPSABIDIUM MICROLEPIS (GUNTHER, 1864) (PISCES: CRYPRINIDAE), BY LENGTH FREQUENCY ANALYSIS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: D. Tweddle --- Fisheries Department, MalawiThe mpasa, Opsaridium microlepis, is an important commercial species in areas of Lake Malawi near major inflowing rivers during annual spawning migrations. Plots of length frequency data collected over a series of years from mpasa catches in the Bua and... -
HUMAN ACTIVITIES AND FACTORS AFFECTING THE DISTRIBUTION OF MACROBENTHIC FAUNA IN SALDANHA BAY
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: L.F. Jackson --- , South Africa S. McGibbon --- , South AfricaThe most recent trends in the economic development of Saldanha Bay are towards the tourist and mariculture industries, both of which are dependent on a high quality of water. Yet this water quality is now under threat. In this study,... -
DETRIMENTAL EFFECTS OF FENTHION (QUELETOX® UL), USED TO CONTROL RED-BILLED QUELEA (QUELEA QUELEA), ON RHEOPHILIC BENTHIC MACROINVERTEBRATES IN THE ORANGE RIVER
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: R.W. Palmer --- Department of Water Affairs and Forestry, South AfricaThe relative abundance of rheophilic macroinvertebrates in the Orange River was assessed before and 15 hrs after two aerial applications of fenthion (QUELETOX® UL) above roosting sites of the red-billed quelea (Quelea quelea). The first treatment had no detectable effect... -
Fire and the dynamics of a semi-arid grassland: influence on soil characteristics
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: H A SnymanThe short-term impact of fire burning with the wind (head fire) and against the wind (back fire) on soil characteristics (soil-water content, soil compaction, soil temperature, organic matter, pH, exchangeable Ca, Mg, K, Na and extractable P) were determined in... -
Maasai Mara — an ecosystem under siege: an African case study on the societal dimension of rangeland conservation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: John Waithaka'Let me assure you all that our commitment to the preservation of wildlife and the habitat in the Maasai Mara reserve is total. We do not deny that the reserve is of vital economic importance to us, but we also... -
The challenge of integrated rangeland monitoring: synthesis address
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: David WesternThe need to balance biodiversity conservation with sustainable development, though widely agreed upon, is elusive in practice. Human societies are increasingly disconnected from the ecosystems which support them. The loosening connection and growing scientific acceptance that ecosystems are complex, dynamic,... -
The effect of long-term fire treatments on invertebrates: results from experimental plots at Cathedral Peak, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C Uys M HamerThis study examined the impacts of different burning regimes (fire frequency and season) and fire history (time since last burn) on invertebrate morphospecies richness and abundance. The study was carried out in the Brotherton experimental plots at Cathedral Peak in... -
Effect of three grazing intensities on selected soil properties in semi‐arid west Texas
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: E.M. Seitlheko --- Department of Agronomy, United States of America B.L. Allen --- Department of Agronomy, United States of America D.B. Wester --- Department of Agronomy, United States of AmericaSoils in the study, carried out in the Texas Trans‐Pecos region, were fine‐loamy, mixed, thermic Aridic Calciustolls; fine‐loamy, mixed, thermic Aridic Ustochrepts; and fine, mixed, thermic Typic Chromusterts. Our primary objective was to determine the effect of three grazing intensities... -
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... -
Short‐term effects of cattle‐to‐sheep ratio and stocking rate on patch grazing in sour grassveld
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M.B. Hardy --- , Republic of South AfricaThe short‐term effects of stocking rate (AUE ha−1) and cattle‐to‐sheep ratio on the extent and severity of patch grazing and on patch size were evaluated. The extent of patch grazing was proportional to stocking rate, and livestock species had a... -
Study on the early effects of several weed-control methods on Parthenium hysterophorus L.
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: J Goodall --- , South Africa M Braack --- KZN Department of Agriculture and Environmental Affairs, South Africa J de Klerk --- , South Africa C Keen --- , South AfricaWe carried out a trial in the Hluhluwe-iMfolozi Park comparing three herbicides and two manual control techniques for controlling the annual weed Parthenium hysterophorus L. The herbicides 2,4-D amine (480 g ai l−1), metsulfuron methyl (600 g kg−1) and picloram... -
Post-wildfire regeneration of rangeland productivity and functionality – observations across three semi-arid vegetation types in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Johannes AD Breedt --- School of Biological Sciences, South Africa Niels Dreber --- School of Biological Sciences, South Africa Klaus Kellner --- School of Biological Sciences, South AfricaWildfires can have significant impacts on rangeland productivity and functionality causing substantial economic losses to affected farmers. In August 2011, such wildfires swept through the North West province of South Africa, destroying large areas of grazing and farm infrastructure. There... -
The effect of harvesting operations, slash management and fertilisation on the growth of a Eucalyptus clonal hybrid on a sandy soil in Zululand, South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: ColinW Smith Ben du ToitHarvesting operations during clearfelling and extraction of timber from commercial plantations result in many processes that may affect long-term site productivity such as soil compaction and residue manipulation. The objective of this work was to evaluate the effects of various... -
Growth modelling of Pinus roxburghii in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: E.R. Falkenhagen --- , South AfricaThe growth in diameter at breast height, height and tree volume and plot density were studied in an unreplicated spacing trial of Pinus roxburghii at Weza, South Africa. -
Teacher Attitudes towards the Inclusion of Children with Mild Hearing Impairments into the Regular School Settings
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Levison Maunganidze --- Zimbabwe Open University, Zimbabwe Joseph Mavu Kasayira --- Midlands State University, Zimbabwe Nancy Ruhode --- Zimbabwe Open University, Zimbabwe Loice Shonhiwa --- Zimbabwe Open University, Zimbabwe Tholene Sodi --- University of Venda, South AfricaThe study examined the attitudes of a sample of Zimbabwean teachers towards the inclusion of children with mild hearing impairments. Two hundred and forty-six primary school teachers participated in the study. The teachers completed the modified Attitude Toward Mainstreaming Questionnaire... -
Dimensions of Social Well-Being in a Motor Manufacturing Organisation in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Melanie de Jager --- University of South Africa, Sanet Coetzee --- University of South Africa, Deléne Visser --- University of South Africa,The study examined the psychometric properties of the 15-item version of the Social Well-being Scale (SWBS-15: Keyes, 1998) for a South African sample with diversity in culture. The SWBS-15 and a biographical questionnaire were administered to employees in a motor... -
The Impact of Life Design Counselling on Adolescents
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree [AN0001] Zelda PollardThis study records a process of heightening self-awareness within a semi-structured ‘life design counselling’ process. The research was conducted on the basis of a case study designed to facilitate co-constructive conversation with a purposefully selected youth. The participant was enabled... -
The Impact of Poverty on Women's Psychosocial Well-being: Narratives from Zimbabwean Migrant Women in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Regis Chireshe --- Walter Sisulu University, South AfricaThe study investigated the psychosocial impact poverty has had on Zimbabwean migrant women. The sample comprised 7 female participants (3 professional teachers and 4 informal traders) who had migrated to South Africa because of poverty. Their age ranged from 16... -
Forgivingness: An Angolan-Portuguese Comparison
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Félix Neto --- University of Oporto, Portugal Maria da Conceição Pinto --- University of Oporto, PortugalForgiveness can be considered on multiple levels, from those interpersonal incidents that are contextualized to a dispositional trait form that transcends individual injustices. Three distinct aspects of forgivingness (dispositional forgiveness) have been recently put forward: (a) Lasting resentment; that is,... -
A Rogerian Perspective on Empathic Patterns in Southern African Healing
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen D. Edwards --- University of Zululand,The aim of this article is to describe and provide evidence for the effectiveness of patterns of empathy in Southern African forms of healing. This is done through an evaluative literature review of the Rogerian perspective on empathy in relation... -
Well-Being in the Batswana Cultural Context: Constructs and Measures
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Itumeleng P. Khumalo --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Marié P. Wissing --- North-West University, South AfricaThe study investigated wellbeing in a Setswana-speaking sample. Participants (n=459, males =141 females =318; 22% = aged between 30 and 40 years) completed the General Psychological Well-being Scale (GPWS: Khumalo, Temane & Wissing, 2010) and the Mental Health Continuum Short-Form... -
Teachers' Gender Stereotypes in South Africa: A Case Study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tuntufye S. Mwamwenda --- Africa Institute of South Africa,The study investigated Teachers' gender stereotypes in the Eastern Province of South Africa. Participants were 65 Junior Secondary school teachers (females= 40 and males = 25) who assembled together at a seminar organized by the Department of Education. They completed... -
Compassion Fatigue, Burnout and Compassion Satisfaction: Prevalence among Nursing Students
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- Tshwane University of Technology, Juan A. Nel --- University of South Africa,This article reports on the professional quality of life of a sample of participants who were enrolled for an academic programme in Nursing Science (N = 80, females = 73). Data were collected utilising the Professional Quality of Life (ProQOL... -
Critical Incidents Impact Management Among South African Police Service Officers
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Masefako Andronica Gumani --- University of Venda, Eduard Fourie --- University of South Africa, Martin Terre Blanche --- University of South Africa,This article describes and interprets the law enforcement processes of managing critical incidents in a South African police district. Twenty participants from various police units were selected through purposive and theoretical sampling techniques. Data were collected using unstructured open-ended interviews,... -
Compactness in fuzzy function spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Gunther JägerIn [3] we defined a notion of compactness in FCS, the category of fuzzy convergence spaces as defined by Lowen/Lowen/Wuyts [8]. In their paper the latter also introduced a fuzzy convergence structure c-lim for fuzzy function spaces thus proving that... -
Compactification and Closure
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: David HolgateA topological space X is compact iff for any other space Y, the projection map π Y : X × Y → Y is closed. Previous authors have used this characterisation, and the theory of categorical closure operators, to... -
Compactness with Respect to a Convergence Structure
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Josef SlapalA convergence structure for a category is given by determining convergent nets and their limits for each object of this category under validity of some basic convergence axioms. The nets considered are obtained as a categorical generalization of the usual... -
The Metric Theory of Tensor Products (Grothendieck's Résumé Revisited) Part 3: Vector Sequence Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Joe Diestel Jan Fourie Johan SwartIn this part of our exposition and expansion of Grothendieck's work on the metric theory of tensor products we look at the behaviour of the injective and surjective tensor norms in the case where one of the component spaces is... -
A Characterization of the Prime Closed Filter Compactification of a Topological Space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: H.L. Bentley H. HerrlichThe prime compactification whose points are the prime closed filters can be defined for a general topological space and is naturally functorial. We derive several properties of this compactification and present a characterization. -
Striking differences between ZF and ZF+weak choice in view of metric spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Horst Herrlich Kyriakos Keremedis Eleftherios TachtsisWell-known properties held by metric spaces with the countable chain condition (ccc) such as separability, second countability, Lindelöf, paracompactness may fail in the absence of the axiom of choice AC. In the long catalogue of weak choice principles, see [10],... -
An Addendum to Popa's Paper
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: BerhaneT. GhaimIn this note we make a few simple observations regarding examples of D. Popa (cf. [3]) concerning weakly compact operators on C[0, 1] and other related classes. -
The Dual Space of an Asymmetric Normed Linear Space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: L.M. García-Raffi Romaguera Sanchez-PérezGiven an asymmetric normed linear space (X, q), we construct and study its dual space (X ∗ , q ∗). In particular, we show that (X ∗ , q ∗) is a biBanach semilinear space and prove that (X, q)... -
Good Projections of Spaces of Vector Measures onto Subspaces of Bochner Integrable Functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Giovanni EmmanueleWe show that the complementability of L 1 (μ, X) in cabv (μ, X) implies the complementability of L 1 (μ, K(Z, X)) in cabv (μ, K(Z, X)), provided the projection from cabv (μ, X) onto L 1 (μ, X)... -
A Pointfree Study of Bases For Spaces Of Minimal Prime Ideals
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Melvin Henriksen Joanne Walters-WaylandLet C (X) denote the ring of all real-valued continuous functions on a topological space X, and mX its space of minimal prime ideals with the hull-kernel topology. It has a base consisting of clopen sets and which contains the... -
Notes on Uniform Frames
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba DubeWe introduce the notion of uniform paracompactness to uniform frames and give several characterisations thereof. In another context, we show that the locally fine reflector commutes with the completion in the category of strong nearness frames. -
Cb (X) Revisited: Induced Map And Submetrizability
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. KunduThis paper, in the first half, studies the induced map on the space C b(X) of all continuous real-valued functions on a Tychonoff spaceX, where the function space has the bounded-open topology. In the second half, the submetrizability of C... -
Mapping spaces and homotopy theory
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: PeterI. BoothLet q : Y → B be a map (= continuous function) and Z be a space. We will use Y ! Z to denote a set of partial maps from Y to Z, i.e.those such maps whose domains are... -
On the duality problem for weakly compact, strictly singular operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Manuel GonzálezWe show that there exists a weakly compact, strictly singular operator T such that the conjugate operator T * is not strictly cosingular. This example gives a negative answer to an old question of Pełczyński. -
Bounded quotients of frames
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba DubeWe define various notions of boundedness in frames along the lines of similar concepts for subspaces and give characterizations of these in terms of filters. In particular we study in depth the frame-theoretic analogue of subspaces that are known in... -
The m-convergence theory in fuzzy topological spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Qingguo LiIn this paper, the m-convergences of fuzzy nets and fuzzy filters are introduced in a fuzzy topological space. The relations between m-convergences of fuzzy nets and fuzzy filters are investigated as are the relations between Hausdorff fuzzy topology and m-convergences... -
Compact perturbations and norm attaining operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Janice KoverIn 1963, Lindenstrauss showed that for a reflexive space, X, and any Banach space,Y, that the norm attaining operators in L(X, Y) are dense. Recall that a linear operator A is norm attaining if there exists a unit vector x... -
A new compactness type topological property
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dongsheng ZhaoBy a gauge on a topological space we shall mean a mapping that assigns each element in the space an open neighbourhood. We investigate some topological properties which can be characterized using gauges. The main property we will consider is... -
Decomposability and uniform integrability in Pettis integration
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C. Godet-Thobie B. SatcoIn this paper, we give several characterizations of decomposable subsets of the space of Pettis integrable functions (in particular, a characterization similar to that already known in the Bochner integrability setting). We also introduce the notion WPUI of uniform integrability,... -
Annihilating probability measures under constraints
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bernhard BurgstallerLet P be a probability measure and H ⊆ L ∞(P) be a linear subspace and 0 < c ≤ 1 ≤ C real constants. Then we give a relatively computable criterion whether or not there exists a H-annihilating probability... -
On Lindel¨of uniform frames and the axiom of countable choice
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: B. Banaschewski J.L. Walters-WaylandThis paper takes another look at the result that any complete separable uniform frame is Lindelöf and some of its ramifications. In particular, it shows that this is equivalent to the axiom of countable choice and provides a new, considerably... -
On characterization of a Riesz homomorphism on C(X)-space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Z. Ercan S. ÖnalLet X be a realcompact space. We present a very simple and elementary proof of the well known fact that every Riesz homomorphism π: C(X) → R is point evaluated. Moreover, the proof is given in ZF. -
Categories of Dicompact bi-T 2 texture spaces and a Banach-Stone theorem
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Filiz Yildiz LawrenceM. BrownThe principal aim of this paper is to consider various aspects of the theory of dicompact bi-T 2 texture spaces, and place them in a categorical setting. It culminates in a version of the Banach-Stone theorem. On the way, a... -
Unity of compactness
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: BrianL. Davis Iwo LabudaLet X be paracompact, that is, every open cover P of X admits a locally finite open refinement R covering X. Does there exist a class D of covers of X such that the paracompactness of X is equivalent to... -
Boundedly UC spaces: characterisations and preservation
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Tanvi Jain S. KunduA metric space (X, d) is called a boundedly UC space if every closed and bounded subset of X is a UC space. A metric space (X, d) is called a UC space if each real-valued continuous function on (X,... -
Katětov revisited: a frame-theoretic excursion
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba DubeThe Katětov extension of a frame is, as in the case of spaces, compact only for compact completely regular frames. This result is purely topological because, subject to appropriate foundations, compact regular frames are topologies. In this paper we find... -
Sequences of measures on atomic subalgebras of P(N)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Antonio Aizpuru Antonio Gutiérrez-DávilaA vector form of Phillips' theorem, for atomic Boolean algebras with countably many atoms, is given. As a consequence we obtain a new characterization of weak compact sets of σ-additive measures. -
On a Weaker Form of Countable Compactness
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maddalena Bonanzinga Filippo Cammaroto MikhailV. MatveevA star covering property which is equivalent to countable compactness for regular spaces and weaker than countable compactness for Hausdorff spaces is introduced and considered. Various kinds of irregularity of topological spaces are discussed. -
A Few Points on Pointfree Pseudocompactness
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Themba Dube Phethiwe MatutuWe present several characterizations of completely regular pseudocompact frames. The first is an extension to frames of characterizations of completely regular pseudocompact spaces given by Väänänen. We follow with an embedding-type characterization stating that a completely regular frame is pseudocompact... -
SYNTOPOFORMIC SPACES (SYNTOPOGENOUS LIMIT SPACES)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dieter Leseberg --- , Federal Republic of GermanyCsászár generalized the uniform spaces, the proximity spaces and the topological spaces to syntopogenous spaces. Cook and Fischer generalized the uniform spaces to uniform limit spaces. Finally Marny generalized the proximity spaces to proximal limit spaces. Analogously we generalize the... -
STABLY CONTINUOUS σ-FRAMES
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Phethiwe Matutu --- Department of Mathematics, University of Stellenbosch, Matieland, South Africa,It is shown that the categories of stably continuous σ-frames and compact regular?—biframes are equivalent. This is the analogue of Banaschewski and Brummer [1], linking the stably continuous frames and compact regular biframes. -
UG-Differentiability Entails Hahn-Banach
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Marianne Morillon --- ERMIT, Département de Mathématiques et Informatique, FranceDenoting by ACN the countable axiom of choice, we show in ZF+AC N that the dual ball of a uniformly Gâteaux-differentiable normed space is compact in the weak* topology.In ZF, we prove that this dual ball is (closely) convex-compact in... -
Ramsey Functions for Symmetric Subsets in Compact Abelian Groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mareli Korostenski --- , South Africa Yuliya Zelenyuk --- , South AfricaGiven a compact group G and r ∈ N, let sr(G) denote the least upper bound of real ϵ > 0 such that for every measurable r-coloring of G, there exists a monochrome symmetric subset of measure ≥ ϵ. A... -
Hard pseudocompact spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Partha Pratim Ghosh --- Indian Statistical Institute, North East Centre, India Biswajit Mitra --- School of Mathematical Sciences, South AfricaThe purpose of this paper is to show that hard pseudocompact spaces are indeed a significant generalisation of pseudocompact spaces on one hand and realcompact spaces on the other. To achieve this we have provided four intrinsic characterisations of hard... -
Schur spaces and weighted spaces of type H ∞
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alejandro Miralles --- Instituto Universitario de Matemáticas y Aplicaciones de Castelló (IMAC), Departamento de Matemáticas, SpainWe extend some results related to composition operators on H υ(G) to arbitrary linear operators on H υ0(G) and H υ(G). We also give examples of rank-one operators on H υ(G) which cannot be approximated by composition operators. -
The class of b-AM-compact operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Belmesnaoui Aqzzouz --- Juridiques et Sociales, Département d'Economie, Morocco Jawad H'Michane --- Département de Mathématiques, MoroccoWe introduce and study a new class of operators that we call b-AM compact operators, and we establish necessary and sufficient conditions on the duality property for this class of operators. As interesting consequences, we obtain some characterizations of discrete... -
Malawi faith communities responding to HIV/AIDS: preliminary findings of a knowledge translation and Participatory-Action Research (PAR) project
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: DennisG Willms Maria-Ines Arratia Patrick MakondesaThis paper reports on the preliminary findings (year one) of a four-year intervention and Participatory-Action Research (PAR) project in Malawi. Project goals are to enhance the response capacity and effectiveness of Faith Community (FC) leaders to the problem of HIV/AIDS... -
Understanding fatalism in HIV/AIDS protection: the individual in dialogue with contextual factors
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Anna Meyer-WeitzMany people remain at risk of becoming HIV-infected despite large-scale prevention efforts. An exploratory study was conducted to investigate the determinants of a fatalistic attitude towards protecting the self from HIV/AIDS. The study utilised the Human Sciences Research Council's national,... -
HIV/AIDS, childhood and governance: sundering the bonds of human society
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Tony BarnettThere is a disharmonious resonance between the length of HIV infection in the individual human host and the length of a human generation. In brief, an infected person may have children, these may be orphaned and grow up to become... -
Youth have a new attitude on AIDS, but are they talking about it?
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Alison Zisser Dennis FrancisIn advocating HIV prevention, organisations such as loveLife in South Africa have increasingly used the media to encourage communication and influence behaviour change in youth. Our study examined youths' understanding and communication habits surrounding loveLife's extensive 'Get Attitude' print campaign... -
Urban and rural differences in HIV/AIDS stigma in five African countries
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: JoanneR Naidoo LeanaR Uys Minrie Greeff WilliamL Holzemer Lucy Makoae Priscilla Dlamini RenéD Phetlhu Maureen Chirwa Thecla KohiStigma and discrimination have been widely researched, especially within the context of health. In the context of HIV/AIDS, studies have shown that stigma variously impacts on prevention, on accessing treatment, and on care programmes. Decreasing stigma is therefore an important... -
The influence of peers and other significant persons on sexuality and condom-use among young adults in northern Tanzania
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Bernard Njau Sabina Mtweve Longin Barongo Rachel Manongi Juliet Chugulu Marcelina Msuya Stella Mwampeta Bertha Kiwale Joseph Lekule Hector JalipaSexual behaviour change remains a primary goal of HIV prevention efforts globally. It is a complex issue influenced by numerous unpredictable variables such as individual desires, social and cultural relationships, and environmental and economic dynamics. This study in northern Tanzania... -
The future of AIDS in Africa: lessons from two scenario projects
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Pieter FourieScenario planning or futures studies have their origin in military planning, but have also been used with great success in the private sector, most notably in the energy industry. UNAIDS and the South African financial services group Metropolitan each recently... -
Modelling the relationship between antiretroviral treatment and HIV prevention: limitations of the Spectrum AIDS Impact Model in a changing policy environment
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Nicoli NattrassThis paper shows how two publicly available epidemiological modelling packages, namely the Spectrum AIDS Impact Model and the ASSA2003 AIDS and Demographic Model, predict very different impacts from rolling out highly active antiretroviral treatment (HAART) on new HIV infections. Using... -
The impact of the HIV epidemic on the composite wellbeing of educators in South Africa: a qualitative study
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: LindaC TheronIn South Africa, support is available for educators who are HIV-positive, and there are numerous initiatives to curb further HIV infections. What is lacking though is an understanding of how the HIV epidemic impacts on educators who are affected personally... -
Epidemiological and demographic HIV/AIDS projections: South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: ThomasM. Rehle --- , USA Olive Shisana --- , South AfricaThe Epidemic Projection Package (EPP) recently developed by the UNAIDS Reference Group on Estimates, Models and Projections and the Spectrum model program developed by the Futures Group were used to model the South African HIV epidemic, project future trends in... -
Behaviour and communication change in reducing HIV: is Uganda unique?
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Daniel Low-Beer --- , United Kingdom RandL Stoneburner --- , United KingdomThe clearest example of declines in HIV prevalence and changes in sexual behaviour comes from Uganda. Are there lessons to learn for other countries or is Uganda unique? In this paper, we assess the epidemiological and behavioural data on Uganda... -
HIV/AIDS knowledge among adolescent sign-language users in South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Victor de Andrade --- Department of Speech Pathology and Audiology, South Africa Bontle Baloyi --- Department of Speech Pathology and Audiology, South AfricaPeople with hearing impairment may have difficulty accessing information about HIV/AIDS, especially those who use sign language. Because adolescence is characterised by sexual maturation, it is important to gauge levels of HIV/ AIDS awareness and knowledge in this age group... -
The significance of gathering wild orchid tubers for orphan household livelihoods in a context of HIV/AIDS in Tanzania
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: JoyceFX Challe --- Department of Research and Training, Mikocheni Agricultural Institute, Tanzania Anke Niehof --- Sociology of Consumers and Households Group, The Netherlands PaulC Struik --- Centre for Crop System Analysis, The NetherlandsWe investigated the role of gathering and selling the edible tubers of wild orchids by children orphaned by AIDS as one of their livelihood strategies, through a household survey administered to 152 households in three villages in the Southern Highlands... -
Potential environmental impacts associated with the proposed abstraction of water from the Okavango River in Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: P AshtonThe Namibian Department of Water Affairs has in the past faced considerable pressure to relieve the water shortages caused by recent droughts. One of the options considered in 1996, following poor runoff during the 1994/95 and 1995/96 seasons, was a... -
Beacons in the limnological landscape
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BR AllansonAn overview is given of a number of major developments in the limnology of South Africa, Zimbabwe and Namibia. None was possible without the involvement of enthusiastic investigators who, over some 70 years, stimulated the growth of freshwater research in... -
Limnology of southern African coastal lakes — new vistas from Mozambique
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RobC Hart Custodio BoaneFourteen mostly small, isolated, and relatively deep coastal inundation lakes were surveyed during the cool season (August) of 1996. No thermal or chemical stratification existed, but near-bottom hypoxia was evident in several systems. Ionic conductivity varied quite widely, but was... -
Zooplankton community changes in Nhlabane estuary, South Africa, induced by man-made structures and drought
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HL JerlingThe Nhlabane estuary and coastal lake system has suffered a number of man-made impacts since 1977, when the lake and estuary were separated by the construction of a barrage. More recent man-made events included the construction of temporary sand walls,... -
The predatory impact of invasive alien smallmouth bass, Micropterus dolomieu (Teleostei: Centrarchidae), on indigenous fishes in a Cape Floristic Region mountain stream
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DarraghJ Woodford N Dean Impson JennyA Day I Roger BillsFish populations in the Rondegat River, a mountain stream in the Olifants-Doring system in the Cape Floristic Region, South Africa were surveyed to assess the impact of predatory alien invasive smallmouth bass Micropterus dolomieu (Lacepède) on the indigenous fishes. This... -
The effect of water hyacinth, Eichhornia crassipes (Martius) SolmsLaubach (Pontederiaceae), on benthic biodiversity in two impoundments on the New Year's River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JohnM Midgley MartinP Hill MartinH VilletWater hyacinth, Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae), forms thick mats that affect water resource utilisation, but little is known about its impacts on biodiversity in aquatic ecosystems. The benthic invertebrate community and algal biomass were sampled under water hyacinth mats... -
Fish breeding in, and juvenile recruitment to, the St Lucia Estuarine System under conditions of extended mouth closure and low lake levels
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Digby Cyrus Leon VivierOngoing drought conditions along the northern coast of KwaZulu-Natal resulted in the St Lucia Estuary mouth closing, and to evaporation leading to extremely low lake levels and the development of hypersaline conditions in most parts of the system. The mouth... -
Gill damage, metallothionein gene expression and metal accumulation in Tilapia sparrmanii from selected field sites at Rustenburg and Potchefstroom, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Daléne van Heerden Peet Jansen van Rensburg Mikko Nikinmaa André VoslooFish were collected from field sites in the mining and agricultural areas of Potchefstroom and Rustenburg, North-West Province, South Africa. Water and sediment samples from each site, together with fish muscle and gills, were analysed by Inductively Coupled Plasma Mass... -
The impact of land use on water quality of the Lwiro River, Democratic Republic of Congo, Central Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M BagalwaThe water quality of the Lwiro River, Democratic Republic of Congo (DRC), Central Africa, was investigated on a monthly basis from December 1999–October 2000, at six stations along a hydraulic gradient from source to mouth, to evaluate the impact of... -
Testing the applicability of the SASS5 scoring procedure for assessing wetland health: a case study in the KwaZulu-Natal midlands, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW QuinnA study was undertaken between 29th January and 17th February 2004 to test the applicability of the South African Scoring System Version 5 (SASS5) scoring and calculation procedure in nutrient-enriched palustrine wetlands in the midlands of KwaZulu-Natal, South Africa. Four... -
The distribution and relative abundance of stream fishes in the upper Manyame River, Zimbabwe, in relation to land use, pollution and exotic predators
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Gratwicke --- Department of Biological Sciences, Zimbabwe BE Marshall --- Department of Biological Sciences, Zimbabwe T Nhiwatiwa --- Department of Biological Sciences, ZimbabweA survey of the upper Manyame River catchment, middle Zambezi system, Zimbabwe, yielded a total of 22 fish species from 48 stations. The most widespread species (present at >20 stations) were Marcusenius macrolepidotus, Barbus paludinosus, Labeo cylindricus, Clarias gariepinus and... -
The global impact of alien trout species—a review; with reference to their impact in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JA Cambray --- Makana Biodiversity Centre, South AfricaRainbow and brown trout have been introduced into at least 82 countries, where they have significantly impacted indigenous fish, aquatic invertebrates and amphibians. In many studies the second, and sometimes the first, most serious identified threat to indigenous aquatic fauna... -
Ecological status and role of the Mfolozi–Msunduzi estuarine system within the iSimangaliso Wetland Park, a World Heritage Site on the south-east coast of South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DP Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South Africa L Vivier --- Coastal Research Unit of Zululand, Department of Zoology, South Africa RK Owen --- Coastal Research Unit of Zululand, Department of Zoology, South Africa HL Jerling --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaThe original structure and functioning of the historical Mfolozi–St Lucia estuarine system are described and anthropogenic impacts, which resulted in the Mfolozi and Msunduzi rivers being separated from the St Lucia Estuary and having their own combined mouth to the... -
A comparison between fish assemblages in mangrove forests and on intertidal flats at Ungwana Bay, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DO Mirera --- , Kenya JG Kairo --- , Kenya EN Kimani --- , Kenya FK Waweru --- , KenyaFish assemblages of mangrove forest patches and adjacent intertidal flats in Ungwana Bay were compared using stake-net sampling in the mangrove forest and intertidal flat habitats between December 2002 and November 2003. Four forest sites were compared with paired intertidal... -
Human impacts on hydrological health and the provision of ecosystemservices: a case study of the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Sinchembe --- Department of Environmental Science, South Africa WN Ellery --- Department of Environmental Science, South AfricaWetland hydrological health and the provision of indirect ecosystem services in the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa, were assessed in 2008, using the newly developed wetland assessment tools WET-Health and WET-EcoServices. Variation in health and ecosystem services were assessed... -
Gastropod diversity, distribution and abundance in habitats with and without anthropogenic disturbances in Lake Victoria, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Lange --- Invertebrate Zoology Section, Kenya TK Kristensen --- Mandahl-Barth Research Centre for Biodiversity and Health in Developing Countries, DBL Centre for Health Research and Development, Denmark H Madsen --- Mandahl-Barth Research Centre for Biodiversity and Health in Developing Countries, DBL Centre for Health Research and Development, DenmarkWe investigated freshwater gastropod diversity, abundance and distribution in habitats with and without anthropogenic disturbance in two localities, Ndere in the Winam Gulf and Mbita Point, Lake Victoria, Kenya, from May 2002 to January 2004. A total of 133 984... -
AN ASSESSMENT OF THE GROWTH RATE OF MPASA, OPSABIDIUM MICROLEPIS (GUNTHER, 1864) (PISCES: CRYPRINIDAE), BY LENGTH FREQUENCY ANALYSIS
Item type: Journal Article • Journal: Southern African Journal of Child and Adolescent Mental Health • Authors: D. Tweddle --- Fisheries Department, MalawiThe mpasa, Opsaridiwm microlepis, is an important commercial species in areas of Lake Malawi near major inflowing rivers during annual spawning migrations. Plots of length frequency data collected over a series of years from mpasa catches in the Bua and... -
Observations on the Ecology of Pleurobrachia Pileus (Ctenophora) in the Southern Benguela Ecosystem
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M. J. Gibbons E. Buecher D. Thibault-BothaThe vertical distribution, abundance and size composition of a population of Pleurobrachia pileus was studied during a six-day drogue study conducted off the west coast of South Africa in February 1995. The population was centred in deep water, possibly because... -
An ecosystem approach to fisheries in the southern Benguela context
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K. L. Cochrane C. J. Augustyn A. C. Cockcroft J. H. M. David M. H. Griffiths J. C. Groeneveld M. R. Lipińnski M. J. Smale C. D. Smith R. J. Q. TarrThe 2001 Reykjavík Declaration on Responsible Fisheries in the Marine Ecosystem and the Plan of Implementation of the 2002 World Summit on Sustainable Development highlighted the need in fisheries to look beyond considering only the target species and to consider... -
Comparison of fish-community size spectra based on length frequencies and mean lengths: a note
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Yemane MH Griffiths JG FieldEstimates of fish-community size spectra are promising indicators of the impact of fishing on fish assemblages. Size spectra consist of logarithmic graphs of abundance plotted against fish body size. Size spectra may either be constructed from length frequency data or... -
Tropical South-East Atlantic response to ENSO as an ecosystem indicator for the southern Benguela
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MR JuryThe response of the tropical South-East Atlantic Ocean to the El Niño Southern Oscillation (ENSO) was studied for the period 1950–1999. Interaction between the ocean thermocline 'see-saw' and the overlying zonal wind circulation was examined. The two are closely linked... -
Climate change impacts on fisheries in West Africa: implications for economic, food and nutritional security
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: VWY Lam --- Fisheries Economics Research Unit, Fisheries Centre, Canada WWL Cheung --- Fisheries Centre, Canada W Swartz --- Fisheries Economics Research Unit, Fisheries Centre, Canada UR Sumaila --- Fisheries Economics Research Unit, Fisheries Centre, CanadaWest Africa was identified as one of the most vulnerable regions to climate change in previous global analyses. Adverse changes in marine resources under climate change may pose significant threats to the livelihoods and well-being of the communities and countries... -
Fishing methods for sustainable shrimp fisheries in the Canary Islands (North-West Africa)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Arrasate-López --- , Spain VM Tuset --- , Spain JI Santana --- , Spain A García-Mederos --- , Spain O Ayza --- , Spain JA González --- , SpainDuring the past 20 years, experimental cruises have been conducted around the Canary Islands (North-West Africa) to investigate the biodiversity of the deep-sea ecosystem and to explore new fisheries resources. Although pandalid shrimps were shown to be very abundant in... -
Efficacy of rights-based management of small pelagic fish within an ecosystems approach to fisheries in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M M Hara --- Institute for Poverty, Land and Agrarian Studies (PLAAS), South AfricaSouth Africa's small pelagics fishery is moving towards a management strategy using an ecosystem approach to fisheries (EAF), with rights-based management (RBM) as the key rights allocation system. While EAF strives to balance between, among others, ecological and social-economic objectives,... -
A decade of illegal fishing in Table Mountain National Park (2000–2009): trends in the illicit harvest of abalone Haliotis midae and West Coast rock lobster Jasus lalandii
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GC Brill --- Department of Geography and Environmental Science, South Africa SJPN Raemaekers --- Environmental Evaluation Unit, Department of Environmental and Geographical Sciences, South AfricaIllegal fishing activities are reported to be on the increase in South Africa, including in its marine protected areas (MPAs). Research is presented on the nature and the scale of illegal fishing in Table Mountain National Park (TMNP) by analysing... -
Reduced seabird night strikes and mortality in the Tristan rock lobster fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JP Glass --- Tristan Fisheries Department, Central South Atlantic Ocean PG Ryan --- Percy FitzPatrick Institute, DST/NRF Centre of Excellence, South AfricaThe main impact of the fishery for Tristan rock lobster Jasus tristani on seabirds at the Tristan archipelago and Gough Island is through night strikes, when petrels collide with a ship after being disorientated by its lights. Tristan fishery observers... -
Agriculture and Climate Change in Cameroon: An Assessment of Impacts and Adaptation Options
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yong D. Ngondjeb --- , CameroonThis study aims to assess the economic impact of climate change on crop farming activities in the Sudano-Sahelian Area of Cameroon. The study uses the Ricardian model and is based on farm data generated from a survey carried out in... -
Government R&D Impact on the South African Macroeconomy
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Radhika Perrot --- Mapungubwe Institute for Strategic Reflection, South Africa (MISTRA) David Mosaka --- Beracah Consulting, South Africa Lefentse Nokaneng --- Beracah Consulting, South Africa Rita Sikhondze --- Wits Business School, Wits University, South AfricaThis article analyses the impact of government R&D on the macro-economy of South Africa. Most literature on the impact of R&D on the economy has been on advanced countries, where R&D expenditure as per cent of the GDP has been... -
Does soil compaction on harvesting extraction roads affect long-term productivity of Eucalyptus plantations in Zululand, South Africa?
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Colin W. Smith --- ,The effect ofsoil compaction on the growth of Eucalyptusgrandis and two clonal hybrids (Eucalyptus grandis x urophylla (E. gxu) and Eucalyptus grandis x camaldulensis (E. gxc)) was evaluated on harvesting extraction roads at three sites in the Zululand region ofKwaZulu-Natal... -
Relative success of self and outcross pollen after mixed- and single-donor pollinations in Eucalyptus grandis
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: TN Horsley --- School of Biological and Conservation Sciences, South Africa SD Johnson --- School of Biological and Conservation Sciences, South AfricaA previous observation that self-pollen tubes traversed the style at a slower rate than cross-pollen tubes in Eucalyptus grandis and E. urophylla suggested the presence of cryptic self-incompatibility (CSI) in these species. The aim of the present study was, with... -
The pitch canker fungus, Fusarium circinatum: implications for South African forestry
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: RG Mitchell --- York Timbers, Tree Breeding Division, South Africa ET Steenkamp --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), South Africa TA Coutinho --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), South Africa MJ Wingfield --- Department of Microbiology and Plant Pathology, Forestry and Agricultural Biotechnology Institute (FABI), South AfricaFusarium circinatum, the causal agent of pitch canker of mature pines and root/collar rot of pine seedlings/cuttings, has resulted in large-scale losses to pine forestry in various parts of the world. The disease caused by this fungus is now regarded... -
A review of management impacts on the soil productivity of South African commercial forestry plantations and the implications for multiple-rotation productivity
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Louis Titshall --- Institute for Commercial Forestry Research, South Africa Steven Dovey --- Institute for Commercial Forestry Research, South Africa Diana Rietz --- Institute for Commercial Forestry Research, South AfricaAn overview of southern African research that has investigated the impact of management practices that can potentially affect the long-term site productivity of plantations is presented, with an emphasis of these impacts on soil productivity and with the implications for... -
The socioeconomic impact of the phasing out of plantations in the Western and Southern Cape regions of South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: M Carien de Beer --- Department of Forest and Wood Science, South Africa Cori Ham --- Department of Forest and Wood Science, South Africa Dirk W Längin --- Mondi, South Africa Francois Theron --- School of Public Leadership, South AfricaThis study investigates the possible socioeconomic impact of the phasing out of nearly 22 500 ha of plantations within the Southern and Western Cape regions of South Africa as a result of a decision made by government in 2000. Data... -
Gender, famine and HIV/AIDS: rethinking new variant famine in Malawi
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Andy GibbsAlthough making a large and rapid impact on our understandings of the interactions between famine and HIV/AIDS, the new variant famine hypothesis has had little critical scrutiny. This paper uses a case study of the Malawian food crisis of 2001/2002... -
Employees' perceptions of the Aid-for-AIDS disease-management programme, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Alan Rothberg Karen Van HuyssteenIt is estimated that 18–20% of South Africa's more than 5 million HIV-positive individuals are formally employed. Disease management programmes for these employees vary in scope and sophistication, with services provided by the employer, or third-party specialist disease managers, or... -
Use and neglect of best-practice HIV/AIDS programme guides by South African companies
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ronald Whelan David Dickinson Tessa MurrayNumerous guidelines set out best-practice policies for HIV/AIDS interventions in the workplace. This study analysed 14 recognised codes and guidelines to gain an understanding of the theoretical consensus regarding the key components of best-practice workplace HIV/AIDS interventions. Nine key components... -
Bridging the gap between VCT and HIV/AIDS treatment uptake: perspectives from a mining-sector workplace in South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Anil Bhagwanjee Inge Petersen Olagoke Akintola Gavin GeorgeThis qualitative study sought to understand users' perceptions of the voluntary counselling and testing (VCT) and HIV-treatment services offered by a mining company in South Africa, with the intention of making recommendations to improve the rates of uptake. A purposive... -
The economic burden of HIV and AIDS on households in Nigeria
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: MichaelA Adedigba Sudeshni Naidoo Albert Abegunde Oluwafemi Olagundoye Ebun Adejuyigbe Ibiyemi FakandeThe study estimates the economic burden of HIV and AIDS on households in a Nigerian population. The data derive from a cross-sectional survey of households affected by HIV or AIDS in Ife-Ijesa Zone, Osun State, Nigeria. The sample consisted of... -
KwaZulu-Natal commercial farmers' perceptions of and management responses to HIV/AIDS
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Lyndon Gray --- Agricultural Economics, School of Agricultural Sciences and Agribusiness, South Africa Stuart Ferrer --- Agricultural Economics, School of Agricultural Sciences and Agribusiness, South Africa Gerald Ortmann --- Agricultural Economics, School of Agricultural Sciences and Agribusiness, South AfricaThis study examines commercial farmers' perceptions of and management responses to the HIV epidemic, among a sample in KwaZulu-Natal Province in South Africa. The analysis is based on responses to a postal survey of commercial farmers belonging to KwaZulu-Natal Agricultural... -
Daniel arap Moi and the politics of HIV and AIDS in Kenya, 1983–2002
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Samwel Ong'wen Okuro --- Department of History, KenyaThe contrasting outcomes to HIV/AIDS prevention and mitigation processes in sub-Saharan Africa have not been adequately investigated or explained. Specifically, few scholars have attempted to root the responses to HIV and AIDS within the socio-economic and political realities of those... -
Environmental impact of seasonal integrated aquaculture ponds ('fingerponds') in the wetlands of Lake Victoria, Kenya: an assessment, with the aid of Bayesian Networks
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Julius Kipkemboi AnneA van Dam Patrick DennyThe potential effect on ecosystem integrity of the use of natural wetlands for seasonal wetland fishponds ('fingerponds'), integrated with vegetable production for livelihood demands, was evaluated using experimental sites at Lake Victoria, Kenya. Soluble reactive phosphorous and total phosphorus, ammonium,... -
The effect of fish predation on benthic macroinvertebrates in a seasonal stream in north-western Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Albert Chakona Brian Marshall Luc BrendonckThe cumulative impact of the entire fish assemblage on benthic macroinvertebrate assemblages was investigated over four months in a removal experiment in isolated pools that persist through the dry season, in an intermittent stream in north-western Zimbabwe. Macroinvertebrate taxonomic richness... -
Caddisfly (Trichoptera) larvae of the Opa River basin, south-western Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SylvesterS OgboguCaddisflies in the streams of the Opa River catchment basin in Ile-Ife, south-western Nigeria, were surveyed, documenting nine genera in six families. Hydropsychidae is the most speciose family, with three genera, and has the highest number of individuals in the... -
Effect of an impoundment on nutrient dynamics in the Kihansi River, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RJ Ideva J Machiwa F Schiemer T HeinThe impact of the Kihansi Dam on electrical conductivity, pH, temperature and dissolved oxygen in the Kihansi River was assessed in 2005 after 85% of the original river flow had been diverted to the Lower Kihansi power plant. The results... -
A preliminary assessment of the impact of forest conversion from natural to pine plantation on macroinvertebrate communities in two mountain streams in Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Chakona B MarshallThis study presents preliminary data on the influence of forest conversion from natural to pine plantation on benthic macroinvertebrates in streams in the Chimanimani Mountains in the Eastern Highlands of Zimbabwe, a region that has received little attention with respect... -
Fish community response to increased river flow in the Kariega Estuary, a freshwater-deprived, permanently open southern African system
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PD Vorwerk PW Froneman AW Paterson AK WhitfieldThe littoral and demersal ichthyofaunal community structure in the freshwater-deprived, permanently open Kariega Estuary was investigated following heavy rain in November 2006 and was compared to low-flow condition data from 1991 and 1996. All surveys took place during the spring... -
Growth of market-size abalone (Haliotis midae) fed kelp (Ecklonia maxima) versus a low-protein commercial feed
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TL Francis GW Maneveldt J VenterThe growth of grow-out abalone fed on kelp, with c. 10 % dry weight protein content, was compared with that of those fed on 'Feed A' (a new low-protein commercial feed of c. 26 % protein), in a flow-through system... -
Influence of largemouth bass, Micropterus salmoides, on abundance and habitat selection of Cape galaxias, Galaxias zebratus, in a mountain stream in the Cape Floristic Region, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JM Shelton JA Day CL GriffithsPredatory alien fishes have been widely introduced into streams in the Cape Floristic Region (CFR), South Africa, but little is known about their effect on native fishes. Results from this 2006 study suggest that the presence of alien predatory largemouth... -
Intrusion of beach-disposed dredger spoil into the Mhlathuze Estuary, South Africa, and its impact on Zostera capensis
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DP Cyrus CF MacKay SP WeertsPort expansion at Richards Bay on the east coast of South Africa between 1996 and 1999 required the disposal of some 5,998,429 m3 of dredge spoil. This was deposited via a pipeline onto the adjacent beach and spilled into the... -
Composition and abundance of the zooplankton community in the Bitter Lakes, Egypt, in relation to environmental factors
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RA El-BassatThe taxonomic composition of the zooplankton community of the Bitter Lakes, Egypt, was examined in 2003–2004 in relation to the spatial and temporal distribution of environmental factors. Copepoda were dominant, forming 49% of the zooplankton, followed by Protista at 37%... -
Application of a direct toxicity assessment approach to assess the hazard of potential pesticide exposure at selected sites on the Crocodile and Magalies rivers, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Ansara-Ross --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa PJ van den Brink --- Department of Aquatic Ecology and Water Quality Management, The Netherlands MJ Ross --- Centre for Aquatic Research, Department of Zoology, South AfricaThe potentially hazardous effects of agricultural pesticide usage in the Crocodile (west) Marico catchment were evaluated using the Danio rerio and Daphnia pulex lethality, Selenastrum capricornutum growth inhibition and the Ames mutagenicity plate incorporation assays. Hazard assessment categories are proposed... -
A benthic survey of the rocky reefs off Pondoland, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Celliers BQ Mann AHH Macdonald MH SchleyerA subtidal marine biodiversity survey was carried out on shallow reefs (−1m to −30m) in the proclaimed Pondoland Marine Protected Area between Port Edward and Port St Johns, South Africa. A total of 26 benthic reef transects was undertaken involving... -
Movement pattern and home range of Roman Chrysoblephus laticeps
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SE Kerwath A Götz CG Attwood PD Cowley WHH SauerThe movement behaviour of adult Roman Chrysoblephus laticeps (Sparidae) was investigated using mark-and-recapture techniques in the Goukamma Marine Protected Area (GMPA) and the Tsitsikamma National Park (TNP) on the South African temperate south coast. The study was designed to improve... -
Diving behaviour of African penguins: do they differ from other Spheniscus penguins?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PG Ryan SL Petersen A Simeone D GrémilletAfrican penguins Spheniscus demersus closely resemble Magellanic S. magellanicus and Humboldt S. humboldti penguins and have similar breeding and feeding ecologies. Adults feed on pelagic schooling fish in continental shelf waters, but African penguins have been reported to have shallower... -
Changes in the trophic structure of the southern Benguela before and after the onset of industrial fishing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KE Watermeyer LJ Shannon CL GriffithsDespite a human presence in the Benguela region for at least one million years, exploitation of marine resources by European seafarers only began in earnest in the 1400s. Ecopath with Ecosim was used to construct and compare mass-balanced foodweb models... -
Changes in the trophic structure of the northern Benguela before and after the onset of industrial fishing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KE Watermeyer LJ Shannon J-P Roux CL GriffithsExploitation of marine resources has been occurring in the northern Benguela ecosystem for centuries. Understanding the cumulative long-term effects of this exploitation is important toward effective management of the modern system. Retrospective mass-balanced models of the ecosystem have been constructed,... -
Comparative embryogenesis of Australian and South African viviparous clinid fishes (Blennioidei, Teleostei)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Fishelson --- Department of Zoology, George S Wise Faculty of Life Sciences, Israel O Gon --- , South AfricaThe study follows the embryogenesis of 16 species of viviparous clinid fishes (Clinidae, Teleostei), from the Cape south coast of South Africa and from Australia, with comparative remarks on the development of juveniles in oviparous species. The sperm intromitted into... -
Measure of compactness for filters in the approach setting
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Frédéric MynardNew explicit descriptions of the reflections of a convergence-approach space on pseudo-approach, pre-approach and approach spaces are given. A measure of compactness for filters is introduced in the context of convergence-approach spaces. It is shown that this measure generalizes all... -
On a Constant Arising in the Analysis of Bit Comparisons in Quickselect
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: PeterJ. Grabner Helmut ProdingerA (real) constant that appears as the factor of the leading term of the average number of bit comparisons required by quickselect, and was originally given in terms of complex numbers, is expressed using real numbers alone. A further representation... -
On Inessential Elements in Different Banach Algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D. Behrendt H. RaubenheimerIf B is a subalgebra of a Banach algebra A we consider the problem of determining conditions that ensure that an element of B that exhibits a property in B also exhibits this property when viewed as an element of... -
Stone-C˘ech Compactifications of Ditopological Texture Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Aysşegül Altay Uğur Murat DikerA texturing on a set S is a point separating, complete, completely distributive lattice S of subsets of S with respect to inclusion which contains S, Ø and for which arbitrary meet coincides with intersection and finite joins coincide with... -
On some parameters related to weak noncompactness in L1(μ,E)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Diana Caponetti --- Department of Mathematics, ItalyA weak measure of noncompactness γU is defined in a Banach space in terms of convex compactness. We obtain relationships between the measure γU (A) of a bounded set A in the Bochner space L1 (μ,E) and two parameters Π(A)... -
Convolution Operators on Spaces of Vector-Valued Functions that are Completely Continuous
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Paulette Saab --- Department of Mathematics, USALet X be a Banach space and let G be a compact abelian group. We study when convolution operators that are induced by a regular Borel scalar measure v on G are Completely Continuous (or Dunford-Pettis) operators (respectively, Weak-Dunford-Pettis) when... -
Regional vegetation management standards for commercial pine plantations in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: CA Rolando --- , New Zealand KM Little --- , South AfricaDuring the 1990s a number of trials were implemented in the summer rainfall region of South Africa to determine both the short- and long-term impacts of competing vegetation on pine growth. Trial sites were selected across different physiographic regions such... -
Regional vegetation management standards for commercial Eucalyptus plantations in South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: KM Little CA RolandoDuring the 1990s a number of trials were implemented in the summer-rainfall region of South Africa to determine both the short- and long-term impacts of competing vegetation on eucalypt growth. Trial sites were selected across different physiographic regions such that... -
Convergence of Ishikawa iterations on noncompact sets
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Simba A. Mutangadura --- Department of Mathematics & Applied Mathematics, South AfricaRecall that Ishikawa's theorem [4] provides an iterative procedure that yields a sequence which converges to a fixed point of a Lipschitz pseudocontrative map T: C →C, where C is a compact convex subset of a Hilbert space X. The... -
Growth rates of alien Oreochromis niloticus and indigenous Oreochromis mortimeri in Lake Kariba, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PC Chifamba --- Department of Biological Sciences, Zimbabwe JJ Videler --- Centre for Ecological and Evolutionary Studies, The NetherlandsGrowth rates of indigenous Oreochromis mortimeri and alien Oreochromis niloticus from Lake Kariba were estimated from samples collected in 1997–2000, 2003–2005 and 2010–2011. Growth zones on scales and otoliths of O. niloticus and on the otoliths and opercula of O... -
A survey of metabolic syndrome in first-degree relatives (fathers) of patients with polycystic ovarian syndrome
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: M Akbarzadeh --- Academic Instructor, Iran F Moradi --- Midwife, University of Medical Sciences, Iran MH Dabbaghmanesh --- Department of Internal Medicine, Endocrine and Metabolism Research Center, Iran P Jafari --- Department of Biostatistics, Iran ME Parsanezhad --- Department of Obstetrics and Gynecology, IranObjectives: Women with polycystic ovarian syndrome (PCOS) are at twice the risk of developing metabolic syndrome, compared to women from the general population. The aim of this study was to assess the prevalence of metabolic syndrome in the first-degree relatives... -
Biographical, pain and psychosocial data for a South African sample of chronic pain patients
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: SP Walker --- Department of Psychology, South Africa CL Odendaal --- Pain Control Unit, Department of Anaesthesiology, South Africa KGF Esterhuyse --- Department of Psychology, South AfricaObjective: To gather biographical and pain data for a sample of South African patients visiting a specialist pain control unit. To investigate the role of various psychosocial variables in this sample's chronic pain experience. Subjects and Method: 325 adult outpatients... -
Anaesthetic gases: environmental impact and alternatives
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: M Bosenberg --- Department of Anaesthesia,Little consideration has been given to the environmental impact of gaseous anaesthetic use. All currently used volatile anaesthetics are halogenated and chemically similar to chlorofluorocarbons (CFCs), giving them the potential to impact the environment negatively via both ozone depletion and... -
A comparison of non-invasive versus invasive methods of haemoglobin estimation in patients undergoing intracranial surgery
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Puneet Khanna --- Department of Anaesthesiology, India Vanitha Rajagopalan --- Department of Anaesthesiology, India Gyaninder Singh --- Department of Neuroanaesthesiology, India Hemanshu Prabhakar --- Department of Neuroanaesthesiology, IndiaBackground: Until recently, invasive monitoring techniques were the only ones available for the estimation of haemoglobin (Hb) in the blood. However, following the introduction of a new non-invasive monitor, Hb concentration could be non-invasively and continuously monitored. It allows immediate... -
Perceptions of hospital managers regarding the impact of doctors' community service
Item type: Journal Article • Journal: South African Family Practice • Authors: OB Omole --- Dept. of Family Medicine & PHC, South Africa G Marincowitz --- Dept. of Family Medicine & PHC, South Africa GA Ogunbanjo --- Dept. of Family Medicine & PHC, South AfricaBackground: In South Africa, the distribution of doctors is skewed in favour of the urban areas, but it is not uncommon to find many peri-urban facilities in short supply of doctors. In 1997, the South African government introduced compulsory community... -
On Death and Dying—Forty years later, how well are we dying?
Item type: Journal Article • Journal: South African Family Practice • Authors: DA Cameron --- Department of Family Medicine,In the mid-1960s two doctors, one in London and the other in Chicago, set about changing the accepted medical care of dying patients. In London, Dr Cicely Saunders established St Christopher's Hospice specifically to provide compassionate care for dying patients... -
Prevalence of diabetes mellitus in the rural southern Free State
Item type: Journal Article • Journal: South African Family Practice • Authors: AJ Groenewald --- Department of Chemical Pathology, Faculty of Health Sciences, HJ van Wyk --- Department of Chemical Pathology, Faculty of Health Sciences, CM Walsh --- Department of Nutrition and Dietetics, Faculty of Health Sciences, S van Zyl --- Department of Basic Medical Sciences, Faculty of Health Sciences, LJ van der Merwe --- Department of Basic Medical Sciences, Faculty of Health Sciences,Background: A worldwide increase in the prevalence of diabetes mellitus (DM) has been reported and an even further increase is expected as a result of lifestyle changes. The objectives of this study were to determine the prevalence of DM in... -
Features of integrated professional training for physically disabled people in a community-based rehabilitation programme in the rural and urban areas of Congo
Item type: Journal Article • Journal: South African Family Practice • Authors: MP Lutala --- Département de Médecine de Famille, Congo (DRC) VP Masika --- Université Catholique Graben Butembo, Congo (DRC) MC Kasereka --- Université Catholique Graben Butembo, Congo (DRC) EK Kasagila --- Department of Community Health, MalawiBackground: The rehabilitation of physically disabled people has been explored from the perspectives of patients, health professionals, rehabilitation agencies, etc. However, no study has linked disability types, training programmes and career prospects. In this study, we therefore evaluated the professional... -
The assessment and management of dementia
Item type: Journal Article • Journal: South African Family Practice • Authors: Z Vally --- Lentegeur Psychiatric Hospital, and Department of Psychiatry and Mental Health,South African family practitioners can expect to contend with rising rates of dementia as the aged segment of the population grows larger and HIV-related neuropsychiatric complications manifest with increasing prevalence. Family practitioners are often the first professional consulted by families... -
Social exclusion of students with visual impairments at a tertiary institution in KwaZulu-Natal
Item type: Journal Article • Journal: South African Family Practice • Authors: M Kasiram --- Howard College Campus, University of KwaZulu-Natal, R Subrayen --- University of KwaZulu-Natal,Objectives: People with visual impairment experience exclusion and marginalisation from family, mainstream school, the community and university. The experience of social exclusion is multistructural, multidimensional and complex. This article is based on a study that aimed to describe the social... -
The economics, financing and implementation of HIV treatment as prevention: What will it take to get there?
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: David Wilson --- The World Bank Group, USA Jessica Taaffe --- The World Bank Group, USA Nicole Fraser-Hurt --- The World Bank Group, USA Marelize Gorgens --- The World Bank Group, USAThe 2013 Lancet Commission Report, Global Health 2035, rightly pointed out that we are at a unique place in history where a “grand convergence” of health initiatives to reduce both infectious diseases, and child and maternal mortality – diseases that... -
Social comparison influences on disciplinary panels: a brief qualitative study in Kenyan secondary schools
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Peter J.O. Aloka --- Department of Psychology & Educational Foundations, Kenya Olaniyi Bojuwoye --- Department of Educational Psychology, South AfricaThis study investigated the influences of social comparisons on group polarization in decision making among members of selected Kenyan secondary school disciplinary panels. Ten participants from 10 selected secondary school disciplinary panels were involved. Semi-structured interviews were used to collect... -
Drivers for the effective management of HIV and AIDS in the South African construction industry — a Delphi study
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Nishani Harinarain --- School of Engineering, Property Development Programme, South Africa Theo Conrad Haupt --- School of Engineering, Property Development Programme, South AfricaDifferent industries manage the threats presented by HIV and AIDS in different ways. The construction industry is particularly vulnerable to the pandemic because of its large unskilled labour force, high labour turnover and the migratory nature of the workforce. The... -
Evidence for lacustrine breeding by sanjika Opsaridium microcephalum (Teleostei: Cyprinidae) in Lake Malawi
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: D Tweddle --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa GF Turner --- School of Biological Sciences, UKThree species of Opsaridium occur in the Lake Malawi catchment. The kabyabya Opsaridium tweddleorum is a small species restricted to inflowing rivers and streams, the mpasa Opsaridium microlepis is a large lake-dwelling species that ascends the lower reaches of inflowing... -
Fortigenic qualities of psychotherapists in practice
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Erica F De Lange --- Africa Unit for Transdisciplinary Health Research, South Africa Shingairai Chigeza --- Africa Unit for Transdisciplinary Health Research, South AfricaThis brief report presents preliminary findings on the exploration of strengths (fortigenic) qualities of psychotherapists which can buffer them against compassion fatigue. Participants were seven South African psychologists in private practice. Data were collected using qualitative interviews and thematically analysed... -
The effect of ungulate grazing on a small mammal community in southeastern Botswana
Item type: Journal Article • Journal: African Zoology • Authors: Eli R. Saetnan --- University of Illinois at Urbana-Champaign, U.S.A. Christina Skarpe --- Norwegian Institute for Nature Research, NorwayUngulates can reduce the quantity of food available for other herbivores in general or reduce the available cover for small mammals in particular. On the other hand, browsing and grazing may facilitate foraging by other mammals if the quality and... -
Comparative phylogeography of northwest African Natrix maura (Serpentes: Colubridae) inferred from mtDNA sequences
Item type: Journal Article • Journal: African Zoology • Authors: M. Barata --- Departamento de Zoologia e Antropologia, Faculdada de Ciências, Portugal D. J. Harris --- Departamento de Zoologia e Antropologia, Faculdada de Ciências, Portugal R. Castilho --- University of Algarve, PortugalWhile the comparative phylogeography of European fauna is relatively well understood, with Pleistocene climatic oscillations leading to ‘southern refugia’ for many species, the equivalent pattern has not been determined for North Africa. In this context variation within North African populations... -
Assessing local scale impacts of Opuntia stricta (Cactaceae) invasion on beetle and spider diversity in Kruger National Park, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: M.P. Robertson --- Centre for Invasion Biology, Department of Zoology and Entomology, South Africa K.R. Harris --- Centre for Invasion Biology, Department of Zoology and Entomology, South Africa J.A. Coetzee --- Department of Zoology and Entomology, South Africa L.C. Foxcroft --- Conservation Services, South African National Parks, South Africa A.S. Dippenaar-Schoeman --- Plant Protection Research Institute, Agricultural Research Council, South Africa B.J. van Rensburg --- Centre for Invasion Biology, Department of Zoology and Entomology, South AfricaThere is a paucity of studies examining direct impacts of introduced alien species on biodiversity, a key need for motivating for alien species control in conservation areas. The introduced prickly pear (Opuntia stricta) has invaded some 35 000 ha of... -
Otoliths versus scales: evaluating the most suitable structure for ageing largemouth bass, Micropterus salmoides, in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: G.C. Taylor --- Department of Ichthyology and Fisheries Science, South Africa O.L.F. Weyl --- Centre for Invasion Biology, South African Institute for Aquatic Biodiversity, South AfricaThe suitability of scales for ageing Micropterus salmoides was determined by comparing the precision of growth zone counts on scales with those obtained from sectioned sagittal otoliths from a sample of 496 fish collected from Wriggleswade and Mankazana Impoundments in... -
Interspecific variation in the distribution of ungulates relative to human infrastructure surrounding Amboseli National Park
Item type: Journal Article • Journal: African Zoology • Authors: Marian Howe --- Department of Biology, Vassar College, U.S.A. Moses M. Okello --- The School for Field Studies, Center for Wildlife Management Studies, Kenya Jeremy M. Davis --- Department of Biology, Vassar College, U.S.A.The presence of humans and man-made structures may cause increased wariness in wildlife, causing displacement from traditional habitat ranges. Potential species differences in such responses could affect the composition of wildlife communities around human settlements. We examined the position of... -
Ecosystem modelling in the southern Benguela: comparisons of Atlantis, Ecopath with Ecosim, and OSMOSE under fishing scenarios
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MD Smith --- Department of Zoology, Australia EA Fulton --- CSIRO [Commonwealth Scientific and Industrial Research Organisation], Australia RW Day --- Department of Zoology, Australia LJ Shannon --- Marine Research Institute and Department of Biological Sciences, South Africa Y-J Shin --- Marine Research Institute and Department of Biological Sciences, South AfricaEcosystem-based management of marine fisheries requires the use of simulation modelling to investigate the system-level impact of candidate fisheries management strategies. However, testing of fundamental assumptions such as system structure or process formulations is rarely done. In this study, we... -
Riding the Tide: Management in Africa and the Role of High-Impact Research
Item type: Journal Article • Journal: Africa Journal of Management • Authors: David B. Zoogah --- Earl Graves School of Business and Management, USA Richard B. Zoogah --- Department of Sociology and Anthropology, Ghana Faustina Dalaba-Roohi --- One to One International Consulting, GhanaThe increased interest in the potential of African countries to rise from their current states of underdevelopment is matched by concern about the lack of scientific and technical knowledge. Given the role of management in national development and the contribution... -
The California bearing ratio (CBR) of some mechanically stabilised laterite sub-base soils along the Ibadan-Oyo Road, Southwestern Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: P.A. Fasanmade --- Civil Engineering Department, Nigeria G.O. Adeyemi --- Geology Department, Nigeria E.O. Eze --- Civil Engineering Department, NigeriaMechanical stabilisation by mixing one lateritic soil with another is not a popular subject of research, hence this study. Samples were taken from two locations along the Ibadan-Oyo Road in Southwestern Nigeria. The study focused on determining the California bearing... -
The effect of STC on earnings retention
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Graham --- Department of Accounting,The objective of this study is to determine whether or not the introduction of STC has resulted in South African companies retaining a greater amount of their earnings than prior to the introduction of STC. A statistical analysis of retention... -
Adding market value to a holding company
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: G D I Barr --- Department of Statistical Science and Economics, B S Kantor --- Department of Economics,The paper explains the forces that determine changes in the discount of Net Asset market value of the typical JSE listed holding company. It is demonstrated that a variety of events which will alter the discount automatically may have very... -
Transfer pricing methods in the context of intangible property
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Steyn --- Department of Taxation, School of Accounting Sciences,The purpose of this study is to evaluate the suitability of existing acceptable transfer pricing methods and their application to international transactions between related parties involving intangible property, more specifically intellectual property that is legally protected. The application of the... -
The appropriateness of performance measurement in the service sector: A case study
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: K Sartorius --- School of Accountancy, C Eitzen --- School of Accountancy, C Nicholson --- School of Accountancy,The development of performance measures in service companies has not kept abreast with their manufacturing counterparts despite the unprecedented growth of this sector in recent decades. The objective of this paper is to contribute towards a better understanding of the... -
The timing of the recognition of a liability for secondary tax on companies in accordance with international financial reporting standards
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E R Venter --- Department of Accounting, M Stiglingh --- Department of Taxation,United States Generally Accepted Accounting Practice (“US GAAP”) generally requires taxes to be measured at the rate applicable to distributed profits, while International Financial Reporting Standards (“IFRS”) requires the undistributed rate to be used. This current conflict between US GAAP... -
Business rescue replacing judicial management: An assessment of the extent of problems solved
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: C Lamprecht --- Department of Accounting,The South African Companies Act 46 of 1926 introduced judicial management as a statutory corporate rescue procedure for companies to be used before liquidation, where appropriate. It was retained in the South African Companies Act 61 of 1973, even though... -
A commentary on SARS’ proposed fair value tax on financial instruments
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: P de Jager --- Department of Finance and Tax, S Parsons --- College of Accounting, J J Roeleveld --- Department of Finance and Tax,On 5 July 2012 the South African National Treasury released its draft Taxation Laws Amendment Bill, which included the proposed insertion of section 24JB into the Income Tax Act. The proposed section will require all banks, company members of the... -
Factors influencing corporate governance disclosure of companies listed on the Alternative Exchange (AltX) in South Africa
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Henriëtte Scholtz --- School of Accountancy, South Africa Anna-Retha Smit --- Department of Taxation, South AfricaThis article examines the various factors that influence the level of conformance with corporate governance recommendations for companies listed on the Alternative Exchange (AltX) in South Africa. To achieve this objective, a corporate governance disclosure index was developed by examining... -
South African Statements of Accounting Practice as Part of a User-oriented Framework
Item type: Journal Article • Journal: De Ratione • Authors: J.A. Miller --- University of Natal-Durban,In this third and final article on a suggested Hierarchy of Objectives for Financial Reporting the author deals with Statements of Accounting Practice as the operational level thereof, implementing concepts and principles towards achieving the objectives defined. As a consequence... -
Insider dealing in South Africa – the criminal aspects
Item type: Journal Article • Journal: De Ratione • Authors: R.D Jooste --- University of Cape Town,The new criminal provisions aimed at the regulation of insider dealing In South Africa, although an improvement on the old, are of dubious merit, This article purports to show how the Legislature, through suspect draftmanship, conceptual deficiencies and an over-generous... -
Insider dealing in South Africa – the civil aspects
Item type: Journal Article • Journal: De Ratione • Authors: R.D. Jooste --- University of Cape Town,What are the civil consequence of insider dealing? is civil action a reality? This article examines these issues in the light of recent legislative amendments and attempts to show that, in most instances, neither the common law nor the new... -
Accounting Issues Task Force
Item type: Journal Article • Journal: De Ratione • Authors: G K Everingham --- University of Cape Town,This article reviews the authority of the recently constituted Accounting Issues Task Force in relation to the development of generally accepted accounting practice (GAAP) in South Africa, The Task Force’s first opinion, AC301, deals with the accounting treatment of taxation... -
Intemasionale rekeningkundige standaarde: ’n waardebepaling
Item type: Journal Article • Journal: De Ratione • Authors: M.A. Faul --- Universiteit van Suid-Afrika, T.H. Wallach --- Universiteit van Durban-Westville, -
The Distribution Properties of the Financial Ratios of Listed South African Industrial Companies: 1980–1989
Item type: Journal Article • Journal: De Ratione • Authors: W R Muil --- University of Stellenbosch, W D Hamman --- University of Stellenbosch, E vd M Smit --- University of Stellenbosch,Financial ratios are widely used tools in financial statement analysis, where often the assumption of normality in the ratio distributions has to be made. The article examines the distributions of nine financial ratios for listed South African industrial companies over... -
A critical analysis of the new definition of the holding-subsidiary relationship
Item type: Journal Article • Journal: De Ratione • Authors: G K Everingham --- University of Cape Town, R D Jooste --- University of Cape Town,This article reviews the new definition of the holding-subsidiary relationship, introduced by amendment in 1992 in South Africa into the Companies Act of 1973. It traces the efforts of the legislature, influenced by developments in the United Kingdom, to produce... -
Reforming taxation of business for rationalisation and inflation-neutrality
Item type: Journal Article • Journal: De Ratione • Authors: Wesley J Gavin --- Professor in the Department of Accounting at Rhodes University,Taxation of business in South Africa needs reforming to avoid inflationary distortions and investment disincentives. Inflation adjusted income has largely been abandoned as a feasible tax base. Taxing both corporate and non-corporate business income at a flat rate on the... -
The accounting function of John Company’s Cape of Good Hope factory 1812–1813, during the second British occupation of the Cape colony – observations and comments
Item type: Journal Article • Journal: De Ratione • Authors: J G Samkin --- Department of Accountancy,This paper reviews and makes observations on the accounting functions of the Cape of Good Hope factory of the English East India Company during the period 1812–1813. In particular, the accounting records maintained by the Cape factory are examined. By... -
Successful difficult airway intubation using the Miller laryngoscope blade and paraglossal technique
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: P Anderson --- Department of Anaesthesia, South Africa J Espinaco Valdés --- Department of Anaesthesia, South Africa JG Vorster --- Department of Anaesthesia, South AfricaIn anaesthetic practice clinicians are often faced with difficult airway situations. The conventional approach to intubation is the midline technique using a curved Macintosh blade for direct laryngoscopy. However, we have been successful in such a case using old technology... -
The moving finger: Asian international hotel school students developing English language writing skills
Item type: Journal Article • Journal: • Authors: Peter Graham --- Stenden Rangsit University, Rattanakunakorn Building, 52/347 Muang Ake, Phaholyothin Road, Lak-Hok, Pathumthani, Bangkok, ThailandThe number of international English as a Second Language hospitality students completing their degree programs in Australasia has risen dramatically in the past decade. One factor that may be motivating students to undertake tertiary studies in Australasia is the expectation... -
A framework for caring in physiotherapy education and practice
Item type: Journal Article • Journal: South African Family Practice • Authors: Serela Ramklass --- School of Clinical Medicine, South AfricaBackground: Caring is central to the practice of physiotherapy. However, explicit components of caring required for South African physiotherapy practice within a model of primary healthcare are not detailed. -
Africa is just like every other place, in that it is unlike any other place
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Kamel Mellahi --- Warwick Business School, UK Michael J. Mol --- Department of Strategic Management and Globalization, DenmarkIn this commentary we make a case that an increased focus on strategic management in Africa is both very timely and very necessary. We discuss existing research in this area, arguing that there is not quite enough of it and... -
Telling stories and adding scores: Measuring resilience in young children affected by maternal HIV and AIDS
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Liesel Ebersöhn --- Centre for the Study of Resilience and Department of Educational Psychology, South Africa Irma Eloff --- Centre for the Study of Resilience and Department of Educational Psychology, South Africa Michelle Finestone --- Centre for the Study of Resilience and Department of Educational Psychology, South Africa Adri Grobler --- Centre for the Study of Resilience and Department of Educational Psychology, South Africa Melanie Moen --- Centre for the Study of Resilience and Department of Educational Psychology, South Africa“Telling stories and adding scores: Measuring resilience in young children affected by maternal HIV and AIDS”, demonstrates how a concurrent mixed method design assisted cross-cultural comparison and ecological descriptions of resilience in young South African children, as well as validated... -
A Review of “Place Images and Nation Branding in the African Context: Challenges, Opportunities, and Questions for Policy and Research”, (Nicolas Papadopoulos and Leila Hamzaoui-Essoussi)
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Eugene D. Jaffe --- Ruppin Academic Center, IsraelThis review of Nicolas Papadopoulos and Leila Hamzaoui-Essoussi's paper “Place Images and Nation Branding in the African Context: Challenges, Opportunities, and Questions for Policy and Research” touches upon the authors’ objectives and the extent to which they have been carried... -
Photo-identification and habitat use of Atlantic humpback dolphins Sousa teuszii around the Río Nuñez Estuary in Guinea, West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CR Weir --- Ketos Ecology, UKEcological data for the Atlantic humpback dolphin Sousa teuszii are scant. Six on-effort Sousa teuszii sightings were recorded during 817.6 km of boat-based effort in the Río Nuñez region of Guinea during October and November 2013. Two incidental sightings were also... -
Geotechnical properties of non-crystalline coastal plain sand derived lateritic soils from Ogua, Niger Delta, Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Gabriel Oladapo Adeyemi --- Department of Geology, Lekan Olatayo Afolagboye --- Department of Geology, Alexandra Chinwenwa Chukwuemeka --- Department of Geology,Lateritic soils derived from coastal plain sands around Ogua, Niger Delta in Nigeria, were investigated with a view to elucidate their geotechnical characteristics, which may have influence on their engineering applications. The geotechnical properties of these soils (their compaction parameters,... -
A preliminary investigation of the effects of an Inter Basin Transfer on the ichthyofauna of a small river in northern KwaZulu-Natal,South Africa
Item type: Journal Article • Journal: African Zoology • Authors: A. Viljoen [AN0001] D.P. Cyrus --- Coastal Research Unit of Zululand, South AfricaA study was carried out to provide baseline data so that future impacts of an Inter Basin Transfer on the fish fauna of the Mvuzana River could be assessed. Seven species of fish were recorded, and all were present under... -
Diatoms as water quality indicators in the upper reaches of the Great Fish River, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Holmes --- School of Biological Sciences, South Africa JC Taylor --- School of Biological Sciences, South AfricaThis study focused on the spring-fed upper reaches of the economically important Great Fish River with the aim of determining if diatoms could be used for biomonitoring in semi-arid conditions in southern Africa. Five sites were monitored monthly from 2010... -
First survey of fishes in the Betty's Bay Marine Protected Area along South Africa's temperate south-west coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Roberson --- Marine Research Institute, Department of Biological Sciences, South Africa H Winker --- South African National Biodiversity Institute, Kirstenbosch Research Centre, South Africa C Attwood --- Marine Research Institute, Department of Biological Sciences, South Africa L De Vos --- Marine Research Institute, Department of Biological Sciences, South Africa C Sanguinetti --- Percy FitzPatrick Institute of African Ornithology, South Africa A Götz --- Elwandle Node, South AfricaThis first survey of fish in the Betty's Bay Marine Protected Area (MPA), on the south coast of South Africa, was conducted using baited remote underwater video systems (BRUVs). A total of 58 deployments recorded 42 species in 20 km2, including... -
Have grass carp driven declines in macrophyte occurrence and diversity in the Vaal River, South Africa?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PSR Weyl --- Zoology and Entomology Department, South Africa GD Martin --- Zoology and Entomology Department, South AfricaThe Vaal River, South Africa, historically had a rich diversity of native submerged macrophytes with at least 13 species from 5 families recorded. Over the past 10 years there has been a noticeable reduction in the occurrence and diversity of... -
Multi-criteria performance evaluation of an airline maintenance programme – A case study
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kazeem A Adebiyi --- Mechanical Engineering Department, Nigeria Olasunkanmi O Akinyemi --- Agricultural and Mechanical Engineering Department, Nigeria Egunleti O Adeleye --- Agricultural and Mechanical Engineering Department, NigeriaIt has always been a concern to most airline operators why their aircraft are on the ground despite all the resources being incurred on maintenance. It is the main goal of this study to evaluate the performance of an airline... -
Psychometric properties of a measure of psychological factors among francophone adolescent learners in a South African setting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Moletsane Mokgadi --- Department of Educational Psychology, South Africa Robert Kananga Mukuna --- Department of Educational Psychology, South AfricaThis study reported on the psychometric properties of a prospective measure of psychological wellbeing among immigrant francophone adolescent learners in high schools in the Western Cape, South Africa. The sample size comprised 170 participants (females = 51%; age range 14... -
Measures of weak noncompactness, nonlinear leray-schauder alternatives in banach algebras satisfying condition (p) and an application
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Amro Alsheikh Ali --- , , Tunisia Afif Ben Amar --- , , TunisiaIn this paper, we establish some new nonlinear Leray-Schauder alternatives for the sum and the product of weakly sequentially continuous operators in Banach algebras satisfying certain sequential condition (P). The main condition in our results is formulated in terms of... -
Tightness relative to some (co)reflections in topology
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Richard N. Ball --- , , U.S.A Bernhard Banaschewski --- , , Canada Tomáš Jakl --- , , Nám Aleš Pultr --- , , Nám Joanne Walters-Wayland --- , , U.S.A.We address what might be termed the reverse reflection problem: given a monoreflection from a category A onto a subcategory B, when is a given object B ∈ B the reflection of a proper subobject? We start with a well... -
A taper function for Pseudotsuga menziesii plantations in Spain
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Carlos A López-Sánchez --- Instituto de Silvicultura e Industria de la Madera, México Roque Rodríguez-Soalleiro --- Departamento de Producción Vegetal, Spain Fernando Castedo-Dorado --- Departamento de Ingeniería y Ciencias Agrarias, Spain Sacramento Corral-Rivas --- División de Estudios de Posgrado e Investigación, México Juan G Álvarez-González --- Departamento de Ingeniería Agroforestal, SpainFive stem taper models belonging to three different taper function categories were fitted to data corresponding to 282 Pseudotsuga menziesii trees. The trees were selected in the area surrounding 61 research plots installed in Galicia, Asturias and the Basque Country,... -
The correct name of the South-central black rhinoceros is Diceros bicornis keitloa (A.Smith, 1836)
Item type: Journal Article • Journal: African Zoology • Authors: Kees Rookmaaker --- Rhino Resource Center, SpainIn South Africa, the black rhinoceros (Diceros bicornis) is divided into two subspecies, the South-western in the west and the South-central in the east. The exact boundary between the ranges of these subspecies is uncertain, but has been defined to... -
Abdominal compartment syndrome complicating peptic ulcer disease
Item type: Journal Article • Journal: South African Family Practice • Authors: Ni Ni Sein --- Department of Family Medicine and Primary Health Care, South Africa John Tumbo --- Department of Family Medicine and Primary Health Care, South AfricaBackground: Abdominal compartment syndrome is a severe condition of tension generated within the closed abdominal cavity from perforation of peptic ulcer. Due to the chemical reaction and pressure consequences it has poor prognosis with very high mortality > 80%. -
Structure and dynamics of demersal fish assemblages over three decades (1985–2012) of increasing fishing pressure in Guinea
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ML Camara --- Centre National des Science Halieutiques de Boussoura (CNSHB), Republic of Guinea B Mérigot --- Université de Montpellier, France F Leprieur --- Université de Montpellier, France JA Tomasini --- Université de Montpellier, France I Diallo --- Centre National des Science Halieutiques de Boussoura (CNSHB), Republic of Guinea M Diallo --- Centre National des Science Halieutiques de Boussoura (CNSHB), Republic of Guinea D Jouffre --- Institut de Recherche pour le Développement, SenegalIn a context of growing fishing pressures and recommendations for an ecosystem approach to fisheries, there is a need to monitor changes in fish communities over time. In this study, we analysed data from scientific trawl surveys carried out on... -
Ingestion rates and grazing impact of the brackwater mussel Brachidontes virgiliae in Lake St Lucia, iSimangaliso Wetland Park, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: HA Nel --- School of Life Sciences, South Africa R Perissinotto --- School of Life Sciences, South Africa NK Carrasco --- School of Life Sciences, South AfricaBivalves feed on a combination of phytoplankton and zooplankton and have the potential to impact considerably the planktonic biomass, especially when they occur in high densities, such as in oyster and mussel beds. The brackwater mussel Brachidontes virgiliae is numerically... -
Black Jack: Do company benefits and feelings have an impact on my happiness?
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Rosa Naudé --- TREES (Tourism Research in Economic Environs and Society), South Africa Stefan Kruger --- TREES (Tourism Research in Economic Environs and Society), South Africa Melville Saayman --- TREES (Tourism Research in Economic Environs and Society), South Africa Cara Jonker --- School of Human Resource Sciences, South Africa Muzaffer Uysal --- TREES (Tourism Research in Economic Environs and Society), South AfricaThe aim of this study was to determine whether casino employees’ benefits and their feelings about the company influence their experienced happiness. A total of 1 502 casino employees were surveyed (females = 57%; males = 43%). They completed a... -
Anaesthesia for left thoracoscopic sympathectomy for refractory long QT syndrome: three case reports
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Madhusudan Upadya --- Department of Anaesthesia, India Julie CR Misquith --- Department of Anaesthesia, India Rammoorthi Rao --- Department of Anaesthesia, IndiaCongenital long QT syndrome (LQTS) is a rare genetic disorder that has been associated with various genetic mutations including life-threatening cardiac arrhythmias and sudden death. Left thoracoscopic sympathectomy is an effective treatment for patients who are refractory to medical therapy... -
Burnout, compassion fatigue and compassion satisfaction among nurses in the context of maternal and perinatal deaths
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Teresa-Anne Bagakilwe Mashego --- Department of Clinical Psychology, South Africa Davhana Stanley Nesengani --- Department of Obstetrics and Gynaecology, South Africa Thembelihle Ntuli --- Research Development and Administration, South Africa Gail Wyatt --- Department of Behavioral Medicine, United States of AmericaThis study investigated the prevalence and levels of burnout, compassion fatigue and compassion satisfaction among nurses with exposure to maternal and perinatal deaths. A convenience sample of 83 nurses was selected for participation from six hospitals in Limpopo province, South... -
Methods for assessing the impact of research on innovation and development in the agriculture and food sectors
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ludovic Temple --- Cirad Umr Innovation, France Estelle Biénabe --- Cirad Umr Innovation, France Danielle Barret --- Cirad-Dgdrs, France Gilles Saint-Martin --- Cirad-Dgdrs, FranceThe need for technological transition and the context of the privatization of public research funding both challenge the evolution of methods to assess the impact of research in the agricultural and food sectors. We analyze this evolution through a literature... -
Factors affecting the breeding success of the African Black Oystercatcher (Haematopus moquini): a perspective on protection and food availability
Item type: Journal Article • Journal: African Zoology • Authors: Douglas Loewenthal --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Dane M Paijmans --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaBreeding success (fledglings pair−1 y−1) of the Red-listed African Black Oystercatcher (Haematopus moquini) is highly variable, both spatially and temporally. Despite a diversity of natural factors causing this variability, there is evidence that two anthropogenic factors, i.e. disturbance and an... -
Writing (as) Africans — French Fiction Between Empathy and Orientalism
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Oana Panaïté --- Department of French and Italian, United StatesThis article examines the impact colonial ideology and discursive practices have on French writing about Africa. I begin by examining the constitution and reiteration of a series of defining scenes such as the momentous departure for the African colonies and... -
Unwanted attention: The psychological impact of cyberstalking on its survivors
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shandré Kim Jansen van Rensburg --- Department of Criminology and Security Science, South AfricaThis exploratory study investigated experiences of cyberstalking by analysing the psychological impact on young adult users (n = 12; females = 9). The participants completed in-depth e-mail interviews documenting their lived experiences as cyberstalking survivors. The data were thematically analysed... -
Sustainable agriculture practices and livelihoods in pro-poor smallholder farming systems in 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, UgandaClimate variability and change threaten and impact negatively on biodiversity, agricultural sustainability, ecosystems, and economic and social structures – factors that are all vital for human resilience and wellbeing. To cope with these challenges, embracing sustainability in food production is... -
Utilization of pulverized cow bone (PCB) for stabilizing lateritic soil for road work
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Adeyemi Adeboje --- Department of Civil Engineering, South Africa Williams Kupolati --- Department of Civil Engineering, South Africa Rotimi Sadiku --- Department of Chemical, Metallurgical and Materials Engineering, South Africa Julius Ndambuki --- Department of Civil Engineering, South Africa Dolapo Yussuf --- Department of Civil and Environmental Engineering, Nigeria Chewe Kambole --- Department of Civil Engineering, South AfricaThis research explored the possibility of improving the engineering properties of lateritic soil with pulverized cow bone (PCB), a processed animal waste obtained from slaughtered cows, for road construction. The effects of PCB on the lateritic soil samples were evaluated... -
Scope of research on Parthenium hysterophorus in Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Owen Rubaba --- College of Health Sciences, South Africa Moses Chimbari --- College of Health Sciences, South Africa Samson Mukaratirwa --- School of Life Sciences, South AfricaParthenium (Parthenium hysterophorus) is an invasive plant that invades farm and grazing lands, and affects biodiversity, animal and human health, agricultural productivity and food security. The plant is native to the Americas, but was introduced to Africa, Asia and Australia... -
Comparative perch selection in Southern Fiscal Lanius collaris and Fiscal Flycatcher Sigelus silens at Amakhala Game Reserve, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ryan J Daniels --- Department of Zoology and Entomology, South Africa Patrick E Hulley --- Department of Zoology and Entomology, South Africa Adrian JFK Craig --- Department of Zoology and Entomology, South AfricaThe Southern Fiscal Lanius collaris and the Fiscal Flycatcher Sigelus silens are common, widespread and sympatric in much of southern Africa. They are similar in plumage and ecology, which may predispose them to competition and interspecific territorial aggression but this... -
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... -
Phylogeny of the Sepia officinalis species complex in the eastern Atlantic extends the known distribution of Sepia vermiculata across the Benguela upwelling region
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AJE Healey --- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Wales NJ McKeown --- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, Wales WM Potts --- Department of Ichthyology and Fisheries Science, South Africa CL de Beer --- Department of Ichthyology and Fisheries Science, South Africa W Sauer --- Department of Ichthyology and Fisheries Science, South Africa PW Shaw --- Institute of Biological, Environmental and Rural Sciences (IBERS), Aberystwyth University, WalesAccurate species identification and biogeographic characterisation are fundamental for appropriate management of expanding cephalopod fisheries. This study addresses this topic within the common cuttlefish Sepia officinalis species complex (S. officinalis, S. hierredda and S. vermiculata), with an emphasis on occurrence... -
Focusing on monofilament nets while overlooking the priorities of artisanal fisheries governance in Senegal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thiao --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal A Mbaye --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal M Dème --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal HD Diadhiou --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), SenegalDespite its legal prohibition since 1998, the nylon monofilament net is still widely used in Senegalese artisanal fisheries. To achieve a complete ban on monofilament use, it is necessary to understand the main arguments for its continued use and what... -
Trust in business alliances between mainstream and emerging companies in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kgope P. Moalusi --- Department of Industrial and Organisational Psychology, South Africa Melinde Coetzee --- Department of Industrial and Organisational Psychology, South AfricaThis study explored perceived trust between mainstream and emerging business partner entities in South Africa. A purposive sample of 25 managers from mainstream companies (n = 7) and emerging companies (n = 18) participated in the study. The managers Q-sorted... -
Women in leadership
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Helga Tweebeck --- Hotel Management School, The Netherlands Conrad Lashley --- Hotel Management School, The NetherlandsWomen in leadership positions play an important role for the hotel industry as well as for society. The Pompidou Hotel Group wants to increase the number of female employees in leading positions. The purpose of this research was to find... -
Catalyzing Social Entrepreneurship in Africa: Roles for Western Universities, NGOs and Corporations
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Philip Mirvis --- Global Network on Corporate Citizenship, USA Bradley Googins --- Center for Corporate Citizenship at Boston College, USAThis article reviews research on promoting social entrepreneurship and enterprise in Africa. It also presents brief case studies on how select Western universities, NGOs and corporations are partnering with African institutions to help train and launch social entrepreneurs, to open... -
Blind Spots in African Management Education: An Examination of Issues Deserving Greater Attention
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Michelle P. Lee --- Lee Kong Chian School of Business, Singapore Howard Thomas --- Lee Kong Chian School of Business, Singapore Lynne Thomas Alexander Wilson --- School of Business and Economics, UKThere is reason to be optimistic about management education in Africa given the growth in the number of business schools on the continent and continued efforts at raising quality. There remains room for improvement in the field, of course, and... -
An investigation of the impact of the 1 + 4 Mathematics Teaching Intervention Programme on the attitude of Grade eight and nine Mathematics teachers after two years of attendance
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yeyisani Makhubele --- Computer and Mathematical Sciences, University of Mpumalanga, South AfricaThe purpose of the study was to explore Grade eight and nine teachers’ attitudes towards teaching Mathematics after they had spent two years attending the 1 + 4 Mathematics Teaching Intervention Programme. The sample for the study consisted of 82 teachers who... -
Impact of Integrated Striga Management (ISM) technology on maize productivity in northern Nigeria: A treatment effect approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: L. J. S. Baiyegunhi --- Discipline of Agricultural Economics, School of Agricultural, Earth and Environmental Sciences, South Africa M. B. Hassan --- Discipline of Agricultural Economics, School of Agricultural, Earth and Environmental Sciences, South Africa G. F. Ortmann --- Discipline of Agricultural Economics, School of Agricultural, Earth and Environmental Sciences, South AfricaThis paper evaluates the impact of adopting Integrated Striga Management (ISM) technologies on maize productivity among rural households of northern Nigeria. The study utilizes cross-sectional data collected in 2014 from a randomly selected 643 households. A treatment effect regression model... -
Blood pressure measurement in obese patients: non-invasive proximal forearm versus direct intra-arterial measurements
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: A Verkhovsky --- Department of Anesthesiology and Critical Care, South Africa M Smit --- Department of Anesthesiology and Critical Care, South Africa A Levin --- Department of Anesthesiology and Critical Care, South Africa JF Coetzee --- Department of Anesthesiology and Critical Care, South AfricaBackground: In obesity, accurate perioperative blood pressure measurement using upper arm, non-invasive blood pressure (NIBP) is technically challenging. Proximal forearm NIBP may be an acceptable substitute. Mean arterial blood pressures (MAP) estimated by proximal forearm NIBP were compared with direct... -
The relationship between existential attitudes and professional quality of life among nursing students
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Henry D. Mason --- Directorate of Higher Education Development and Support, South AfricaThis study examined the relationship between existential attitudes and professional quality of life among a sample of South African nursing students (N = 150; mean age = 21.19, SD = 2.77; female = 90%). The student nurses completed the Life... -
Invertebrate drift densities in the Njoro and Kamweti Rivers in the Kenyan highlands that differ in the level of anthropogenic disturbances
Item type: Journal Article • Journal: African Zoology • Authors: Charles M M’Erimba --- Department of Biological Sciences, Kenya John G Mbaka --- Department of Land and Water Management, Kenya Priscilla W Mureithi --- Department of Biological Sciences, Kenya Ken O Ouma --- Department of Biological Sciences, KenyaInvertebrate drift is one of several fundamental ecological processes in streams. However, little is known about the dynamics of invertebrate drift in Kenyan streams. In this study, we assessed invertebrate drift in two rivers, i.e. Njoro and Kamweti, that differ... -
Challenges experienced by healthcare workers in managing patients with hearing impairment at a primary health care setting: a descriptive case study
Item type: Journal Article • Journal: South African Family Practice • Authors: S Orrie --- Division of Family Medicine, School of Public Health and Family Medicine, South Africa T Motsohi --- Division of Family Medicine, School of Public Health and Family Medicine, South AfricaThere has been little research on the experiences of healthcare workers (HCWs) with deaf/hearing impaired (HI) clients. Anecdotal evidence suggests that HCWs experience challenges, but little is reported on how they manage these challenges. Interactions with and care of deaf/Deaf... -
Evaluating the effects of catch-and-release angling on Cape stumpnose Rhabdosargus holubi in a South African estuary
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NK Arkert --- Department of Ichthyology and Fisheries Science, South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa MC Parkinson --- Department of Ichthyology and Fisheries Science, South Africa AC Winkler --- Department of Ichthyology and Fisheries Science, South Africa E Butler --- Department of Ichthyology and Fisheries Science, South Africa S Mannheim --- Department of Ichthyology and Fisheries Science, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaFisheries managers are increasingly promoting catch-and-release (C&R) to manage recreationally angled fish stocks. Despite this, there is a scarcity of information on the effects of C&R on estuarine-dependent species. Cape stumpnose Rhabdosargus holubi dominates the recreational fisheries catch and provides... -
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... -
Impact of information technology on innovation in determining firm performance
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Indiran Poobalan Naidoo --- Graduate School of Business and Leadership, University of KwaZulu-Natal, South Africa Muhammad Hoque --- Graduate School of Business and Leadership, University of KwaZulu-Natal, South AfricaThe aim of this study is to investigate the strategic relevance of Information Technology (IT). The study used resource-based theory to test if IT was a competitive resource, by examining the role it played between the constructs of innovation capability... -
Sustainable development practices for the hotel industry in Nigeria: Implications for the Ilaro area of Ogun State
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Edwin Chigozie Nwokorie --- Department of Hospitality Management, Nigeria Judipat Nkiru Obiora --- Department of Hospitality Management & Tourism, NigeriaSustainable development practices of 15 hotels were investigated in this study in which a 41 point questionnaire, prepared in 10 sub-scales, was administered to 350 respondents selected from employees of the hotels and residents of the host community to ascertain... -
Minimum population size and potential impact of feral and semi-feral donkeys and horses in an arid rangeland
Item type: Journal Article • Journal: African Zoology • Authors: Halcyone Muller --- Conservation South Africa, South Africa Amanda Bourne --- Department of Biological Sciences, South AfricaFarmers in the northern, communally managed parts of the Succulent Karoo, an arid rangeland system in South Africa, historically used donkeys and horses for transport and ploughing. With increasing mechanisation, draught animal power has largely been replaced by machines. Yet,... -
Impact of human activities on the reproduction of Hooded Vultures Necrosyrtes monachus in Burkina Faso
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- Laboratory of Animal Biology and Ecology, Burkina Faso Ralph Buij --- Department of Animal Ecology, The Netherlands Adama Oueda --- Laboratory of Animal Biology and Ecology, Burkina Faso Jacques Boko Adjakpa --- Laboratory of Research in Applied Biology, Benin Wendengoudi Guenda --- Laboratory of Animal Biology and Ecology, Burkina Faso Peter DM Weesie --- Science and Society Group, Faculty of Sciences and Engineering, The NetherlandsDuring the last decades, the critically endangered Hooded Vulture Necrosyrtes monachus has strongly declined across its African range. Although direct persecution has been suggested as a major cause of this decline, little is known about the impact of humans on... -
Job apathy and work engagement: Moderating influence of perceived leader integrity and spiritual intelligence in a Nigerian mass transit company
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Fabian O. Ugwu --- Department of Psychology, Faculty of Management and Social Sciences, Nigeria Ike E. Onyishi --- Department of Psychology, Faculty of the Social Sciences, Nigeria Okechukwu Ibiam Egwu --- Department of Political Science, Faculty of Management and Social Sciences, Nigeria Otu Otu Akanu --- Department of Political Science, Faculty of Management and Social Sciences, Nigeria Okechukwu Groupson --- Department of Political Science, Faculty of Management and Social Sciences, Nigeria Moses Agudiegwu --- Department of Political Science, Faculty of Management and Social Sciences, NigeriaThis study explored the direct and interactive roles of job apathy, perceived leader integrity, and spiritual intelligence on work engagement among 206 Nigerian employees of a leading mass transit company (females = 33%; mean age = 35.81years, SD = 5.04;... -
Conservation buffer sizes derived from movement data of adult Cape vultures (Gyps coprotheres) in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: Jan A Venter --- School of Natural Resource Management, South Africa Francis R Martens --- School of Natural Resource Management, South Africa Kerri Wolter --- VulPro, South AfricaThe endangered Cape vulture (Gyps coprotheres) is facing a new emerging threat, e.g. wind energy development. Given their vulnerability to wind energy infrastructure, there is a necessity to establish proactive measures that could potentially mitigate future collisions, such as conservation... -
Aboveground biomass quantification and tree-level prediction models for the Brazilian subtropical Atlantic Forest
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Heitor Felippe Uller --- Departamento de Engenharia Florestal, Brazil Laio Zimermann Oliveira --- Departamento de Engenharia Florestal, Brazil Aline Renata Klitzke --- Departamento de Engenharia Florestal, Brazil Jackson Roberto Eleotério --- Departamento de Engenharia Florestal, Brazil Alfredo Celso Fantini --- Departamento de Fitotecnia, Brazil Alexander Christian Vibrans --- Departamento de Engenharia Florestal, BrazilForests are the largest biological reservoir of biomass and carbon on the planet. This fact turns them into the main tool to neutralise the CO2 emitted by human activities. Despite such importance, the uncertainties associated with biomass estimates in forests,... -
Reef fish and benthic community structures of the Santa Luzia Marine Reserve in the Cabo Verde islands, eastern central Atlantic Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Freitas --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde TC Mendes --- Departamento de Ecologia, Brazil C Almeida --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde T Melo --- Biosfera I – Associação para Defesa do Meio Ambiente, República de Cabo Verde RC Villaça --- Departamento de Biologia Marinha, Brazil R Noguchi --- Programa de Engenharia Ambiental, Brazil SR Floeter --- Laboratório de Biogeografia e Macroecologia Marinha, Departamento de Ecologia e Zoologia, Brazil CA Rangel --- Centro Nacional de Avaliação da Biodiversidade e de Pesquisa e Conservação do Cerrado (CBC), Brazil CEL Ferreira --- Departamento de Biologia Marinha, BrazilUnderstanding ecological structures and the dynamics of reef fish assemblages is a fundamental step in current conservation biology. Patterns of abundance and biomass of reef fish communities of the tropical Cabo Verde Archipelago (eastern central Atlantic Ocean) have not been... -
Modelling the effect of compaction pressure on the densification of agricultural waste briquettes
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: U. A. Essien --- Department of Material and Metallurgical Engineering, Nigeria P. K. Oke --- Department of Mechanical Engineering, NigeriaAn empirical model for predicting the required compaction pressure of heterogeneous briquettes was developed in this study. The study was based on low-pressure compaction, where the used of binders is paramount. Three agricultural wastes: sawdust, rice husk, and palm kernel... -
The socioeconomic impact of rural-origin graduates working as healthcare professionals in South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: Richard Gavin McGregor --- Umthombo Youth Development Foundation, South Africa Andrew John Ross --- College of Health Sciences Discipline of Family Medicine, South Africa Ganzamungu Zihindula --- Umthombo Youth Development Foundation, South AfricaBackground: Studies documenting the socioeconomic impact of education leading to employment of rural youth, specifically in the healthcare professions, are lacking. The Umthombo Youth Development Foundation (UYDF) is an NGO that provides financial support for rural students to train as... -
Impacts of a concentrated solar power trough facility on birds and other wildlife in South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Corey Jeal --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Vonica Perold --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Samantha Ralston-Paton --- BirdLife South Africa, South Africa Peter G Ryan --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaThis study assesses bird and wildlife mortality and changes in bird species communities at a 50 MW utility-scale concentrated solar power parabolic trough facility in South Africa. The facility was searched for evidence of large vertebrate mortalities over three months... -
Vegetation dynamics in the face of a major land-use change: a 30-year case study from semi-arid South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Olli Hyvärinen --- FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa Chevonne Reynolds --- FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South AfricaAlthough wildlife production is widely considered beneficial for semi-arid environments, few studies have reported on the long-term environmental effects of converting from livestock production to game ranching. Asante Sana Game Reserve in South Africa was stocked with domestic livestock for... -
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... -
Morphological and genetic variation of Leptopelis brevirostris encompasses the little-known treefrogs Leptopelis crystallinoron from Gabon and Leptopelis brevipes from Bioko Island, Equatorial Guinea
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Rayna C Bell --- , , USA Patrick J McLaughlin --- , , USA Gregory FM Jongsma --- , , USA David C Blackburn --- , , USA Bryan L Stuart --- , USAThe Central African treefrog Leptopelis brevirostris has a characteristically short and vertically truncated snout, a tooth-like process at the centre of the mandible, and unlike most species of Leptopelis, eats terrestrial gastropods. Two morphologically similar species (L. crystallinoron and L... -
The impact of supply chain management practices on industry competitiveness: A mixed-methods study on the Zimbabwean petroleum industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Happyson Bimha --- Graduate School of Business & Leadership, South Africa Muhammad Hoque --- Graduate School of Business & Leadership, South Africa Elias Munapo --- School of Economics and Decision Sciences, South AfricaEffective supply chain management practices can enhance competitiveness along the supply chain. Fuel supply chain competitiveness requires a reliable flow of product and customer satisfaction. Competitiveness eluded the Zimbabwean petroleum industry over time and so this research looked at the... -
Compassion capability in resource-limited organizations in South Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Katherine J. Train --- Graduate School of Business, South Africa Kurt April --- Graduate School of Business, South AfricaCompassion in organizations benefits the giver and receiver of compassion, and the organization as a whole. Organizations with resource limitations, however, face risks and liabilities for compassion organizing. In South Africa, an emerging economy with a challenged socioeconomic environment, human... -
Drought challenges for nature tourism in the Sabi Sands Game Reserve in the eastern region of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Tamzyn Smith --- , South Africa Jennifer M Fitchett --- , South AfricaThe Lowveld of South Africa, a savanna biome region economically dominated by nature tourism, has experienced a prolonged dry period beginning in approximately 2015. Despite emerging literature on climate and tourism in southern Africa, the challenges to tourism in the... -
Abiotic and biotic responses to the 2016/2017 restoration project at the St Lucia Estuary mouth, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Jones --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa NK Carrasco --- School of Life Science, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa C Fox --- Ezemvelo KwaZulu-Natal Wildlife, St Lucia Estuary, South AfricaThe St Lucia Estuary is the largest estuarine lake in Africa and has been heavily impacted by anthropogenic activities, which include a history of human-induced sediment loading and separation in the 1950s of the originally common St Lucia Estuary-uMfolozi River... -
Mangrove colonisation of the Mlalazi Estuary, South Africa: a response to artificial breaching
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RH Taylor --- Hydrology Department, South AfricaThe Mlalazi Estuary has 40 ha of mangroves, but before the 1930s there were none. The purpose of this study is to understand why this change occurred, and how the understanding thus gained can provide ecological information that will help... -
Argumentum ad hominem and coercive company culture influences on workaholism: Results and implications of a cross-cultural South Korea study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Joon-ho Kim --- The Cultural Policy Network, South Korea Hyun-ju Choi --- Department of Cultural & Arts Management, South Korea Jong-pil Yu --- Department of Business Administration, South Korea Jeong-hee Lim --- Research Institute Multicultural Community, South Korea Hyuck-jin Lee --- Department of Economics & Trade, South Korea Seung-hye Jung --- School of Dance, South KoreaThe present study investigated the association between supervisors’ use of argumentum ad hominem or confrontational dialogue and companies’ coercive company culture on employees’ emotional exhaustion and workaholism. The survey was conducted with (non-permanent), multicultural foreign workers living in Seoul, Gyeonggi... -
Response of the barrier island coastal region of southwestern Nigeria to climate and non-climate forcing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: IB Danladi --- Department of Geological Engineering, Turkey M Gül --- Department of Geological Engineering, Turkey E Ateş --- Vocational School of Ayaş, TurkeyDespite threats emanating from the influence of climate and non-climate forcing on the barrier island coastal region of southwestern Nigeria, the extent of the coastal erosion is poorly understood. We report evidence of coastal erosion and sediment accumulation in the... -
Does conservation agriculture technology reduce farm household poverty? Evidence from rural Zambia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abdul Nafeo Abdulai --- , Ghana Awal Abdul-Rahaman --- , GhanaThis study examines the adoption and impact of conservation agriculture on farm household poverty in Zambia using both provincial and average poverty lines, given that the poverty line is a key driver to the determination of household poverty. We probe... -
Companionate leadership: A shemswian perspective
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Baniyelme D. Zoogah --- Department of Management and Entrepreneurship, Williams College of Business, Xavier University, USAGiven the calls for theories and models of leadership unique to Africa, I leverage insight from African historical, anthropological, and philosophical accounts to propose one type of indigenous leadership: companionate leadership. It is based on ancient (Kemetic scribes of the... -
Distribution and abundance patterns of two parapagurid hermit crabs (Crustacea: Decapoda: Anomura) along the west and south coasts of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AG Wright --- , South Africa CL Griffiths --- , South Africa TP Fairweather --- , South AfricaA series of over 6 000 research-trawl samples collected along the west and south coasts of South Africa between 1987 and 2014 were analysed for the presence and biomass of two parapagurid hermit crabs, Sympagurus dimorphus and Parapagurus bouvieri. The... -
African international students’ career and job satisfaction: The case of China
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Dennis Fiifi Darko --- , China Zheng He --- , China Evans Asante Boadi --- , China Isaac Owusu Asante --- , ChinaWe aimed to examine the influence of international education career preparation on job acquisition (JA), skilled labour (SL), and job satisfaction (JS) among African student graduates of Chinese universities. Participants were 708 graduates from Ghana who attended Chinese higher education... -
Foraging behaviour of wintering shorebirds at Merja Zerga lagoon (Atlantic coast, Morocco)
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Feirouz Touhami --- , Morocco Hamid Rguibi Idrissi --- , Morocco Abdelaziz Benhoussa --- , MoroccoThis paper presents the results of a comparative study on the foraging behaviour of 15 species of wintering shorebirds at Merja Zerga lagoon. We video recorded a total of 600 actively foraging birds at the intertidal mudflats of the lagoon... -
A systems-based R&D management model for the road and transport engineering sector applied to a community access roads and transport research programme
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Frederik Christoffel Rust --- , South Africa Leslie Roy Sampson --- , South AfricaA conceptual non-linear, systems-based R&D management model for the road and transport sector was developed to address the associated complexities of transport and road research. It takes account of all the elements of the innovation value chain as well as... -
Plankton Index of Biotic Integrity (P-IBI) for assessing ecosystem health within the Ouémé River basin, Republic of Benin
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AM Houssou --- , Republic of Bénin DC Adjahouinou --- , Republic of Bénin CA Bonou --- , Republic of Bénin E Montchowui --- , Republic of BéninThis study aims at assessing the impact of organic pollution on plankton communities of the Ouémé River using a Plankton Index of Biotic Integrity (P-IBI) as a tool for ecological heath assessment. Plankton and other environmental data were collected monthly... -
Teratological cases of the ocular patterns in the South African endemic trapdoor spider genus Stasimopus Simon (1892) (Araneae, Mygalomorphae, Stasimopidae)
Item type: Journal Article • Journal: African Zoology • Authors: Shannon Mitchell --- , South Africa Catherine Sole --- , South Africa Robin Lyle --- , South AfricaTeratology is the science that deals with the causes and patterns of deformities, abnormalities and defects in the physical development of animals. Teratological occurrences can be due to genetic or environmental conditions. Ocular teratologies are common in hypogean spiders. This... -
Fire and rust – the impact of Austropuccinia psidii (myrtle rust) on regeneration of Myrtaceae in coastal heath following wildfire
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: GS Pegg --- , Australia P Entwistle --- , Australia FR Giblin --- , Australia AJ Carnegie --- , AustraliaIn April 2010, the exotic rust fungus Austropuccinia psidii was detected for the first time in Australia, with the host range rapidly increasing to >350 species from 58 genera within the family Myrtaceae. Commonly known as myrtle rust, the disease... -
Human trafficking in the hospitality industry in the Netherlands
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Gonneke Kragt --- , the NetherlandsThis article explores the level of preparedness of front office (FO) employees to recognise and react to human trafficking (HT). The information used for this research was based on relevant literature related to the subject. Also, data for this study... -
An assessment of the ecological condition of a wetland on the Lions River floodplain based on soil and vegetation parameters, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Ndlovu --- , South Africa DC Kotze --- , South Africa GPW Jewitt --- , South Africa CD Morris --- , South AfricaWetlands are increasingly exposed to human activities, resulting in degradation. As the wetland degrades, it loses functionality. In South Africa, wetlands can play an important water-regulating role. This study aims to establish the ecological condition of a historically utilised wetland... -
“Out there it’s YOLO”: Youth perspectives on a mass media HIV- and gender-based violence campaign in South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Gavin Robert Walker --- , ChinaGender-based violence continues to be a leading determinant of South Africa’s HIV/AIDS epidemic. As such, gender socialisation and de-normalisation of gender inequality and violence remain principal objectives for public health organisations. This article discusses youth reception of a mass media... -
The impact of existing diabetes self-management education interventions on knowledge, attitudes and practices in public health care institutions in Harare, Zimbabwe
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Sanele Nkomani --- , South Africa Simbarashe Ruskaniko --- , Zimbabwe Renée Blaauw --- , South Africa -
Development of a Water Quality Assessment Index for the Chania River, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GK Robert --- , Kenya CN Onyari --- , Kenya JG Mbaka --- , KenyaHuman-related activities are known to have deleterious effects on the water quality of aquatic ecosystems, but there is limited information on the impact of these on rivers in tropical regions, such as the Chania River in Kenya. The Chania River... -
Honeybush (Cyclopia spp.) anther-stigma distance and intraspecies cross compatibilities
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Jenifer Koen --- , South Africa Martha M. Slabbert --- , South Africa Mardé Booyse --- , South Africa Cecilia Bester --- , South AfricaSpecies of Cyclopia are used to produce honeybush tea, a uniquely South African beverage that is rapidly growing in popularity locally and abroad. In response to warnings about ecological sustainability, the honeybush industry is transitioning from a wild-harvested source model... -
Calibration and validation of APSIM–Maize, DSSAT CERES–Maize and AquaCrop models for Ethiopian tropical environments
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Hirut Getachew Feleke --- , South Africa MJ Savage --- , South Africa Kindie Tesfaye --- , EthiopiaProcess-based crop models are popular tools to quantify the impact of changes due to climate or crop management. Accurate simulation of crop production for different agro-ecological conditions using an individual crop model remains challenging due to different sources of uncertainty... -
The impact of orphanage tourism on Bali
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Rodney Westerlaken --- , the NetherlandsThis article deals with the phenomenon of orphanage tourism in Bali, Indonesia. Context is given based on a recent published report by the Dutch government on the impact of orphanage tourism. Findings are derived from larger-scale qualitative research based on... -
Moving to design-based education in hotel management school: proof of success and beyond — a research journey
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Hanneke Assen --- , the Netherlands Marte Rinck de Boer --- , the Netherlands Macmillion B Fernandes --- , the NetherlandsNHL Stenden University of Applied Sciences adopted the innovative educational concept design-based education (DBE) in 2018. The Hotel Management School is one of the programmes that introduced a DBE curriculum. It is important to explore to what extent DBE is... -
What is luxury hospitality? A need to move towards a scientific understanding
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Andy Heyes --- , The NetherlandsThe world of luxury and that of luxury hospitality has been growing for numerous years. From hotels such as the Burj Al Arab in Dubai, The Torch in Doha and The Savoy in London, luxury hospitality and the variety which... -
Mathematical calculation ability of primary school children: A comparative study between Ghana and China
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Hui Zhou --- , People’s Republic of China Deku Lawrence Aheto --- , People’s Republic of China Qiyang Gao --- , People’s Republic of China Wei Chen --- , People’s Republic of ChinaThe study explored the development characteristics of primary school children’s calculation ability in Ghana and China and compared the differences between the two countries. Participants included 128 pupils from primary schools in Shaoxing City of China (female = 46.88%; mean... -
A decade of surf-zone linefish monitoring in the Dwesa-Cwebe Marine Protected Area, with a preliminary assessment of the effects of rezoning and resource use
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Bullock --- , South Africa A Wood --- , South Africa VA Dames --- , South Africa JA Venter --- , South Africa J Greeff --- , South AfricaAn 11-year assessment of surf-zone linefish (marine fish captured on hook and line) was carried out in the Dwesa-Cwebe Marine Protected Area (MPA) in the Eastern Cape, South Africa, by research fishing to determine species and size composition, movement and... -
Social and economic effects of marine protected areas in South Africa, with recommendations for future assessments
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JB Mann-Lang --- , South Africa GM Branch --- , South Africa BQ Mann --- , South Africa KJ Sink --- , South Africa SP Kirkman --- , South Africa R Adams --- , South AfricaResearch on the socio-economic aspects of marine protected areas (MPAs) in South Africa is reviewed to guide evaluation and integration. After a brief international review, we used declaration notices and management plans to determine the extent to which social and... -
Zooplankton communities in Lake Nasser, Egypt, under the current flood regime, before the construction of Grand Ethiopian Renaissance Dam (GERD)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Mahmoud H Hegab --- , Egypt Nehad Khalifa --- , Egypt Walid Aly --- , EgyptThis study focuses on changes in zooplankton composition and abundance in Lake Nasser during different flood periods before the construction of the Grand Ethiopian Renaissance Dam (GERD). Field surveys were carried out in August 2016 (flood period), December 2016 (post-flood... -
Evaluation of a masculinity and gender equality intervention for primary school boys
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Maretha Visser --- , South AfricaInterventions to promote gender equality with children should focus on constructive perceptions of masculinity. This study aimed to evaluate a brief intervention to promote constructive gender perspectives among South African primary school boys. Participants were Grade five boys attending 10... -
Is happiness based on psychological harmony? Exploring the mediating role of psychological harmony in the relationship between personality characteristics and occupational well-being
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yuzhu Zhang --- , China Leigang Zhang --- , China Yunlong Wu --- , ChinaThis study proposed and tested a theoretical model for specifying the structural relationship between personality characteristics (including core self-evaluation, social comparison, philosophies of human nature, psychological capital), psychological harmony, and occupational well-being in a higher education setting. We analysed data... -
Quantifying the sources of volatility in the IFRS 9 impairments
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Yolanda S. Stander --- , South AfricaThe International Financial Reporting Standards (IFRS) 9 accounting standard gives rise to impairments that are sensitive to the economic cycle. Rules around stage migration and the incorporation of forward-looking information lead to volatility in the impairments that is not always... -
Dazzled by the light: the impact of light pollution from ships on seabirds at Tristan da Cunha
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- , South Africa E Molly Ryan --- , South Africa James P Glass --- ,Most of the millions of burrow-nesting petrels that breed at Tristan da Cunha are susceptible to light pollution. On dark, misty nights, petrels become disoriented by artificial lights, mainly from ships. From 2013 to 2021 at least 1 823 petrels... -
Digitalisation and temporary agencies: Impact on the business model and internal organisation
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Stephanie van Oorschot --- , The NetherlandsThis study investigated the potential impact of upcoming technologies on the business model of temporary agencies, as well as the required organisational changes to effectively digitalise. Although this research does not focus on temporary agencies in hospitality specifically, the outcomes... -
A review of marine invertebrates used as fishing baits and the implications for national and regional management in the Western Indian Ocean
Item type: Journal Article • Journal: African Zoology • Authors: Carol A Simon --- , South Africa Agnes WN Muthumbi --- , Kenya Charles M Kihia --- , Kenya Kyle MS Smith --- , South Africa Riaan B Cedras --- , South Africa Paubert T Mahatante --- , Madagascar Virginia W Wangondu --- , Kenya Robert Katikiro --- , TanzaniaIn the Western Indian Ocean (WIO), more than 76 records from peer-reviewed and grey literature identified approximately 60 invertebrate taxa harvested for bait and food. The most diverse phyla were Mollusca, followed by Arthropoda and Annelida, with few records of... -
Fire as friend or foe: the role of scientists in balancing media coverage of fires in National Parks
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Izak PJ Smit --- , South Africa Marina Joubert --- , South Africa Kyle Smith --- , South Africa Nicola van Wilgen --- , South Africa Tercia Strydom --- , South Africa Johan Baard --- , South Africa Marna Herbst --- , South AfricaFire can destroy infrastructure and livelihoods, and claim lives. Yet, fire is inevitable and plays several vital ecological roles that have shaped ecosystems over millennia. Planned fires also serve human needs. Critical media content analysis of 390 media reports (print,... -
The effect of changes in human drivers on the fire regimes of South African grassland and savanna environments over the past 100 years
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James R Puttick --- , South Africa M Timm Hoffman --- , South Africa Timothy G O’Connor --- , South AfricaFire is a key regulator of tree cover in grassy ecosystems, but century-long changes in fire regimes have not been explicitly quantified in South Africa. This study aimed to determine changes in the fire regimes of South Africa’s grassy biomes... -
Structural assemblages of plant species in the Owabi Ramsar Wetland in the Ashanti Region of Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Collins A Nsor --- , Ghana Rockson Acolatse --- , Ghana John N Mensah --- , Ghana Samuel K Oppong --- , Ghana Daniel Dompreh --- , Ghana Louis Addai-Wireko --- , GhanaAnthropogenic activities as predictors of species assemblages in the Owabi Ramsar Wetland were investigated between May and September 2019. Data were collected in 154 plots at five different sites. The prevalence index method was used to categorise the species into... -
Applying legitimacy theory to understand sustainability reporting behaviour within South African integrated reports
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Shelly Herbert --- , South Africa Mark Graham --- , South AfricaSustainability disclosures are frequently included within integrated reports, in order to provide disclosures relating to the capitals identified in the International <IR> Framework (the Framework). South Africa has been at the forefront of integrated reporting, following the guidance of King... -
The Job Demands Scale for Hearing-Impaired Employees: Development and preliminary analysis of internal validity
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Strauss Chelius --- , South Africa Marissa Brouwers --- , South Africa Bouwer J Jonker --- , South AfricaFew work participation scales have been normed on employees with hearing impairment. This creates an employment disparity against them. We developed a 57 item Job Demands for Hearing Impaired Employees (JDHIE) scale, providing preliminarily internal validity evidence. Respondents were 85... -
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... -
Impact of COVID-19 on the global hospitality industry: a brief review of current academic literature and meta-analysis to determine primary qualitative themes
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: David S Fowler --- , USAThe purpose of this study is to examine the current literature pertaining to the impact of COVID-19 on the global hospitality industry. The research has a two-fold approach. First, a succinct examination of the literature highlights the significant negative effects... -
Movement behaviour of catface rockcod Mycteroperca (Epinephelus) andersoni (Epinephelidae) off the eastern seaboard of southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- , South Africa R Daly --- , South Africa GL Jordaan --- , South Africa WN Dalton --- , South Africa ST Fennessy --- , South AfricaMovement behaviour of the endemic epinephelid Mycteroperca andersoni (formerly allocated to genus Epinephelus) along the east coast of southern Africa was investigated using both conventional dart tagging and passive acoustic telemetry. Results from both methods showed that this species is... -
Supporting marine spatial planning with an ecosystem model of Algoa Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Ortega-Cisneros --- , South Africa E Weigum --- , South Africa R Chalmers --- , South Africa S Grusd --- , South Africa AT Lombard --- , South Africa L Shannon --- , South AfricaThe Ecopath with Ecosim (EwE) modelling framework was used to develop a model of Algoa Bay and test the ecosystem impacts of the implementation of the Addo Elephant National Park Marine Protected Area (MPA). The Ecopath model included 37 functional... -
Organisational compassion and employee voice behaviour: The mediating role of perceived insider status and felt responsibility
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yungui Guo --- , China Wei Wang --- , ChinaDrawing on social exchange and social cognitive theory, we explored the role of perceived insider status and felt responsibility in the relationship between organisational compassion and employee voice. The sample consisted of 301 employees from eight enterprises in China (female... -
Perceived stigma and self-identity among hearing impaired students: A brief report
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jianhong Zheng --- , China Ming Hong --- , China Sufeng Zhang --- , China Dmitry Grigoryevich Dzyakov --- , BelarusThis study examines the perceived stigma and its relationship to self-identity among students with hearing impairment. Students (n = 151) with hearing impairment (female = 49.67%; mean age = 13.87 years, SD = 1.26 years) completed the Individual Perceived Stigma... -
Influence of anthropogenic activities on water quality of the Kihansi River (Tanzania) and on population trends of captive Kihansi spray toads (Nectophrynoides asperginis)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Atuhombye Sigala --- , United Republic of Tanzania Kelvin Ngongolo --- , United Republic of Tanzania Naza Mmbaga --- , United Republic of TanzaniaFreshwater habitats in Africa receive large amounts of pollutants that affect several aspects of aquatic biodiversity, including Kihansi spray toads (KST) (Nectophrynoides asperginis). Little information is available on the influence of anthropogenic activities on the water quality along the Kihansi... -
Lessons learnt from UNAIDS virtual technical support to countries applying for funding from the Global Fund COVID-19 Response Mechanism
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Arlette Campbell White --- , United Kingdom Marc Péchevis --- , United Kingdom Adriana Jimenez Cuen --- , SwitzerlandIn 2020 the Global Fund for AIDS, Tuberculosis and Malaria initiated a new funding modality, the COVID-19 Response Mechanism, to mitigate the pandemic’s effects on HIV, TB and malaria programmes and health systems in implementer countries. In 2021 UNAIDS introduced... -
Impact of entrepreneurship development programmes on economic aspects of trainees: Evidence from training centres in India
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Santhosha Shetty G --- , India Vikram Baliga --- , India Mathew Thomas Gil --- , India Ren Trevor Dias --- , India Sandeep S. Shenoy --- , IndiaThe aim of this research work was to analyze the impact of entrepreneurship development programmes (EDPs) offered by Rural Development and Self-Employment Training Institutes (RUDSETIs) on the economic aspects of trainees of these institutes. The researchers collected data from 386... -
Does Bonga sheep producers’ cooperative membership improve households’ income in southern Ethiopia?
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kassa Tarekegn --- Southern Agricultural Research Institute, Ethiopia Yishak Shitaye --- Southern Agricultural Research Institute, Ethiopia Tesfaye Gafaro --- Southern Agricultural Research Institute, EthiopiaBonga sheep is one among the known indigenous sheep breeds in Ethiopia with a high rate of growth and weight gain under smallholder management. To enhance the sheep productivity, 16 Bonga sheep breed improvement cooperatives were established in Kaffa zone... -
Estimating the economic damage caused by jellyfish to fisheries in Morocco
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B Mghili --- University Abdelmalek Essaâdi, Morocco M Analla --- University Abdelmalek Essaâdi, Morocco M Aksissou --- University Abdelmalek Essaâdi, MoroccoAlthough there is great fluctuation in annual recordings of jellyfish along the Moroccan Mediterranean coast and an absence of long-term datasets, there is a common perception that jellyfish numbers are rising. To better understand the possible economic losses sustained by... -
Mistaken identity: challenges with specimen identification for morphologically conservative skinks (Trachylepis) leads to taxonomic error
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Kirstin Stephens --- South African National Biodiversity Institute, Kirstenbosch Research Centre, South Africa Graham J Alexander --- University of the Witwatersrand, South Africa Buyisile G Makhubo --- School of Life Sciences, University of KwaZulu-Natal, South Africa Nicolas S Telford --- South African National Biodiversity Institute, Kirstenbosch Research Centre, South Africa Krystal A Tolley --- South African National Biodiversity Institute, Kirstenbosch Research Centre, South AfricaIt is commonly recognised that natural history datasets contain locality errors that can compromise the utility of those datasets. However, another source of error in these datasets is taxonomic misidentifications, and this type of error is potentially common, particularly with... -
New records and a notable observation of potentially predator-avoiding amplectic behaviour in Boophis erythrodactylus from Madagascar
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Robin Kurian Abraham --- Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, United States Carl Richard Hutter --- Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, United StatesThe Red-fingered Bright-eyed Frog Boophis erythrodactylus is an endemic, range-restricted arboreal frog found only in the eastern rainforests of Madagascar. We report new localities for this species, along with locality records for its sister species B. tasymena, including localities where... -
Analysts’ stock ratings and the predictive value of news and Twitter sentiment
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: John Garcia --- , USAThis study investigates the relationship between the stock ratings of professional analysts and company-level sentiment. I find that investor sentiment expressed in tweets and news articles displays a positive relationship with professional analysts’ stock ratings and that the sentiment conveyed... -
Effects of award incentives and competition on entrepreneurship development of women farmers in North West province, South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Enioluwa Jonathan Ijatuyi --- , South Africa Oladimeji Idowu Oladele --- , Nigeria Abiodun Olusola Omotayo --- , South AfricaFemale agricultural workers play an important role in feeding the world; hence, there is a need to encourage females in agricultural enterprises of developing countries. This study specifically identified the socioeconomic characteristics of the participants, their degree of participation, the... -
Disrupted dining: decline of the premium food services segment in India due to the COVID-19 pandemic
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Kishore Thomas John --- Indian Institute of Technology, India Rejikumar Gopalakrishnan --- , IndiaThis review article analyses the premium “fine dining” segment of the Indian food services sector, examining trends during the COVID-19 pandemic. Specifically, we discuss the challenges encountered and initiatives taken in response to the global coronavirus outbreak. Using secondary data... -
Characterizations of maximal z°-ideals of C(X) and real maximal ideals of q(X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Z. Arjmandnezhad --- Shahid Chamran University of ahvaz, Iran F. Azarpanah --- Shahid Chamran University of ahvaz, Iran A.A. Hesari --- Shahid Chamran University of ahvaz, Iran A.R. Salehi --- Petroleum University of Technology, IranIn this paper we first give elementwise characterizations of real maximal ideals and maximal z°-ideals of C(X). Next, using this we characterize the real maximal ideals of the classical ring of quotients q(X) of C(X) and also maximal z°-ideals of... -
A Big Data strategy to reinforce self-sustainability for pharmaceutical companies in the digital transformation era: A case study of Egyptian pharmaceutical companies
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mahmoud Elsayed Hassanin --- Ahram Canadian University, Egypt Mohamed Ahmed Hamada --- International IT University, KazakhstanThe Big Data-driven economy has emerged, and data is known as the new petroleum of the current century. Big Data (BD) analytics can play an essential role in building a self-sustainable competitive advantage for the pharmaceutical industry by feeding pharmaceutical... -
The effects of COVID-19 on food insecurity, financial vulnerability and housing insecurity among women and girls living with or at risk of HIV in Nigeria
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Erik Lamontagne --- , Switzerland Morenike Oluwatoyin Folayan --- Obafemi Awolowo University, Nigeria Olujide Arije --- Obafemi Awolowo University, Nigeria Amaka Enemo --- , Nigeria Aaron Sunday --- , Nigeria Amira Muhammad --- Northern Nigerian Transgender Initiative, Nigeria Hasiya Yunusa Nyako --- , Nigeria Rilwan Mohammed Abdullah --- , Nigeria Henry Okiwu --- , Nigeria Veronica Akwenabuaye Undelikwo --- University of Calabar, Nigeria Pamela Adaobi Ogbozor --- Enugu State University of Science and Technology, Nigeria Oluwaranmilowo Amusan --- Obafemi Awolowo University, Nigeria Oluwatoyin Adedoyin Alaba --- Obafemi Awolowo University, NigeriaAim : Women and girls living with or at high risk of acquiring HIV (WGL&RHIV) in Africa are economically vulnerable. This study aims to advance understanding of the economic impact of COVID-19 on WGL&RHIV and to identify the factors associated... -
Economic implications of COVID-19 for the HIV epidemic and the response in Zimbabwe
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Charles Birungi --- , Switzerland Markus Haacker --- University College London, United Kingdom Isaac Taramusi --- , Zimbabwe Amon Mpofu --- , Zimbabwe Bernard Madzima --- , Zimbabwe Tsitsi Apollo --- , Zimbabwe Owen Mugurungi --- , Zimbabwe Martin Odiit --- , Zimbabwe Michael A Obst --- , GermanyUnderstanding the economic implications of COVID-19 for the HIV epidemic and response is critical for designing policies and strategies to effectively sustain past gains and accelerate progress to end these colliding pandemics. While considerable cross-national empirical evidence exists at the... -
Does vitamin A rich orange-fleshed sweetpotato adoption improve household level diet diversity? Evidence from Ghana and Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Souleimane Adeyemi Adekambi --- University of Parakou (UP), Parakou Julius Juma Okello --- , Uganda Jan Low --- , Kenya Putri Ernawati Abidin --- , Ghana Edward Carey --- , GhanaPromoting the consumption of locally available food crops such as orange-fleshed sweetpotato (OFSP) that are rich in beta carotene, a precursor for vitamin A, has been shown to be a highly effective means of fighting against vitamin A deficiency at... -
Weak limited sets and operators on Banach lattices
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Farid Afkir --- Moulay Ismaïl University, Morocco Aziz Elbour --- Moulay Ismaïl University, MoroccoIn this paper, we prove that an operator T : E → F , between two Banach lattices, maps order intervals onto weak limited sets if and only if the modulus |ST| exists and is Dunford-Pettis for every Dunford-Pettis operator... -
Gender and HIV/AIDS impact mitigation in sub-Saharan Africa — recognising the constraints
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Janet Seeley --- Gender and Development, School of Development Studies, University of East Anglia, Rachel Grellier --- Options Consultancy Services, Tony Barnett --- Development Studies Institute, London School of Economics and Political Science,In discussions of gender and HIV/AIDS, attention has focused on prevention. This is a vital area. However, we argue that there is also a need to focus more attention on the resulting impact of the epidemic, because inequalities that promote... -
Perceived HIV/AIDS impact among staff in tertiary institutions in the Eastern Cape, South Africa
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Nancy Phaswana-Mafuya --- Social Aspects of HIV/AIDS and Health, Human Sciences Research Council, Karl Peltzer --- Social Aspects of HIV/AIDS and Health, Human Sciences Research Council,A descriptive questionnaire-based study was undertaken among staff in tertiary institutions in the Eastern Cape Province. The objective of the study was to explore perceived HIV/AIDS impact on duties at work, staff morale, job satisfaction and workload among a proportionate... -
Understanding the response of large South African companies to HIV/AIDS
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: David Dickinson --- Graduate School of Business Administration, University of the Witwatersrand, Marion Stevens --- Centre for Health Policy, University of the Witwatersrand,This paper provides a framework analysing the response of South African companies to HIV/AIDS. Drawing on three case studies of companies, each with over 20 000 South African-based employees, we identify six ‘drivers’ that influence corporate behaviour regarding HIV/AIDS: legal... -
Estimates of eligibility for antiretroviral treatment (ART) and projected ART impact on AIDS mortality among South African educators
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Thomas M Rehle --- HSRC's Social Aspects of HIV/AIDS and Health Programme, Olive Shisana --- South African Human Sciences Research Council,The study assessed the proportion of HIV-infected educators that need antiretroviral treatment (ART) according to current criteria, and estimated the impact of ART on AIDS mortality by modelling scenarios with and without access to ART. Specimens for HIV testing were... -
Impact of AIDS on rural livelihoods in Benue State, Nigeria
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Thea Hilhorst --- Royal Tropical Institute (KIT), Marti van Liere --- Health Department, KIT, Adiya V Ode --- DFID, Nigeria Korrie de Koning --- Department of Development, Policy and Practice, KIT,This study addresses the socio-economic impact of AIDS on rural livelihoods in Benue State, Nigeria, where HIV prevalence is 9.3% but the number of AIDS cases is still relatively low. About 6% of the study households had experienced illness and... -
‘Triangulating’ AMPATH: Demonstration of a multi-perspective strategic programme evaluation method
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Thomas S Inui --- Regenstrief Institute, Inc., John E Sidle Winstone M Nyandiko Violet N Yebei Richard M Frankel David L Mossbarger David Ayuku Joyce Ballidawa Rose AyikukweiClinical programmes are typically evaluated on operational performance metrics of cost, quality and outcomes. Measures of patient satisfaction are used to assess the experience of receiving care, but other perspectives, including those of staff and communities, are not often sought... -
Social impact of HIV/AIDS on clients attending a teaching hospital in Southern Nigeria
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Ofonime E. Johnson [d125e19]People living with human immunodeficiency virus and acquired immune deficiency syndrome (PLWHA) face numerous social challenges. The objectives of this study were to assess the level of self-disclosure of status by PLWHA, to describe the level and patterns of stigma... -
The treatment action campaign and the three dimensions of lawyering: Reflections from the rainbow nation
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Hassan Ahmad [d364e18]The spread and perpetuation of the HIV/AIDS epidemic in South Africa has hindered the country's social and economic growth after apartheid. This paper documents my experiences while working with the Projects Abroad Human Rights Office and specifically my interactions with... -
A lottery incentive system to facilitate dialogue and social support for workplace HIV counselling and testing: A qualitative inquiry
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Martin Weihs --- , South Africa Anna Meyer-Weitz --- , , South AfricaDespite South African mid-sized companies' efforts to offer HIV counselling and testing (HCT) in the workplace, companies report relatively poor uptake rates. An urgent need for a range of different interventions aimed at increasing participation in workplace HCT has been... -
High-risk behaviors among adult men and women in Botswana: Implications for HIV/AIDS prevention efforts
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Mpho Keetile --- , , BotswanaThe government of Botswana has been spending a lot of money in the prevention, treatment, care and support for HIV/AIDS patient for decades. This paper uses data from the third Botswana AIDS Impact Survey (BAIS III) to explore high-risk behaviors... -
Long‐term variation in reproductive traits of Bibron's agama, agama impalearis, in Western Morocco
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: M. Znari --- Cadi Ayyad University, Morocco E. El Mouden --- Cadi Ayyad University, Morocco H. Francillon‐Vieillot --- Université Denis Diderot Paris 7, Laboratoire d'Anatomie Comparée, FranceFemale reproductive characteristics (clutch size [CS], egg volume [EV] and egg mass [EM]) of Agama impalearis and their annual variation were studied over a six‐year period (1993–1998) in the central Jbilet mountains, Western Morocco. Females produced one to two clutches... -
Description of the tadpoles of two Cameroonian frogs, Leptodactylodon axillaris and L. perreti (Anura: Arthroleptidae)
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Deise Cruz --- California Academy of Sciences, USA AnneliseL. Dawson --- Harvard University, USA DavidC. Blackburn --- California Academy of Sciences, USAWe describe the tadpoles of two closely related frog species of the genus Leptodactylodon (family Arthroleptidae), L. axillaris and L. perreti, that are restricted to the mountains of Cameroon. Tadpoles were collected from near the type locality of each species... -
Restoration of South African estuaries: successes, failures and the way forward
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Claassens --- Rhodes University, South Africa JB Adams --- Institute for Coastal & Marine Research, Nelson Mandela University, South Africa NM de Villiers --- Rhodes University, South Africa J Wasserman --- Institute for Coastal & Marine Research, Nelson Mandela University, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaMajor threats to South African estuaries include freshwater flow alterations, urbanisation, habitat transformation, deteriorating water quality, increased biological invasions and resource over-exploitation. Although South African estuary restoration is in its infancy, important lessons have been learnt through past efforts undertaken... -
How can event locations exceed the expectations of visually-impaired theatre guests for accessibility and service?
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Maud Blok --- NHL Stenden University of Applied Sciences, the Netherlands Rodney Westerlaken --- NHL Stenden University of Applied Sciences, the NetherlandsThis research focuses on identifying barriers for and needs of visually impaired theatre guests (VITG). The focus lies on exceeding expectations by offering services before and during an event, ensuring an accessible venue, and providing excellent service for VITGs. A... -
Impact of tourism on residents’ well-being amid the CoVID-19 pandemic in Bali
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Larissa Huser --- Universitas Triatma Mulya International, Indonesia Erna Wiles --- Universitas Triatma Mulya International, Indonesia Rodney Westerlaken --- NHL Stenden University of Applied Sciences, The NetherlandsBy being dependent on one of the most impacted industries, the travel industry, Balinese residents experienced a considerable downturn in their well-being during the COVID-19 pandemic. This research aims to examine the extent to which sociocultural, economic and environmental aspects... -
Frame presentations of compact hedgehogs and their properties
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Igor Arrieta --- University of Coimbra, Portugal Javier Gutiérrez García --- University of the Basque Country UPV/EHU, Spain Jorge Picado --- University of Coimbra, PortugalThis paper considers the compact hedgehog as a frame presented by generators and relations, based on the presentation of the frame of extended real numbers. The main focus will be on the point-free version of continuous and semi-continuous functions that... -
Linear equivalence of (pseudo) compact spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jan Baars --- , Singapore Jan van Mill --- KdV Institute for Mathematics, University of Amsterdam, The Netherlands Vladimir V. Tkachuk --- Universidad Autónoma Metropolitana, MexicoGiven Tychonoff spaces X and Y, Uspenskij proved in [15] that if X is pseudocompact and Cp(X) is uniformly homeomorphic to Cp (Y), then Y is also pseudocompact. In particular, if Cp (X) is linearly homeomorphic to Cp (Y), then... -
More on cardinality bounds involving the weak Lindelöf degree
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Bella --- University of Catania, Italy N. Carlson --- California Lutheran University, USA I. Gotchev --- Central Connecticut State University, USAWe give several new bounds for the cardinality of a Hausdorff topological space X involving the weak Lindelöf degree ωL(X). In particular, we show that if X is extremally disconnected, then |X| ≤ 2 ωL (X)πχ(X)ψ(X), and if X... -
College students’ aesthetic affection and prosocial behaviour: The role of empathy
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Quanwei Shen --- Shanghai Normal University, China Yuanyuan Wu --- Shanghai Normal University, China Xu Li --- Shanghai Normal University, China Jiamei Lu --- Shanghai Normal University, ChinaTwo studies were conducted to explore the influence of college students’ aesthetic affection on prosocial behaviour and the role of empathy. In Study 1, 343 college students completed the Chinese College Students Aesthetic Affection Questionnaire (CCSAAQ), the Interpersonal Reactivity Index... -
ICT impact and firm size: Empirical results from Vietnam
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Dang Thi Viet Duc --- , Vietnam Phuoc Van Nguyen --- , VietnamThis paper examines the effect of firm size on firms’ ICT adoption and productivity impact by running models for four size groups of 11,709 Vietnamese firms. The results reveal two main points. Firstly, the application of basic ICT is relatively... -
Representation theorems for closed ideals of CB (X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alireza Olfati --- Yasouj University, IranLet CB (X) be the Banach algebra of all continuous bounded ℂ-valued functions on a completely regular Hausdorff space X equipped with the supremum norm. We provide representation theorems for arbitrary closed ideals of CB (X). Indeed, for a closed... -
Connectedness modulo an ideal; a characterization theorem
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R. Koushesh --- Isfahan University of Technology, IranLet X be a topological space and let be an ideal of subsets of X. The space X is called connected modulo if there is no continuous mapping f : X → [0, 1] which is 2-valued modulo in the... -
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Host communities’ infrastructural development expectations of multinational mining companies in Ghana’s mining industry
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Stanford Nartey --- Ghana Institute of Management and Public Administration, Ghana Franklyn A. Manu --- Ghana Institute of Management and Public Administration, GhanaThis paper, through an ethnographic research approach, examines the infrastructural development expectations that host communities have of multinational mining companies (MNMCs) and how these expectations influence corporate-community relationships in two of Ghana’s mining districts. Using data triangulation from multiple stakeholder... -
A note on J -spaces and relatively connected subsets
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Simo S. Mthethwa --- University of KwaZulu-Natal, South Africa Ali Taherifar --- Yasouj University, IranIn this note we present an investigation of J -spaces and other types of spaces related to J -spaces. We characterise these spaces using the notion of relatively connected subsets. For a completely regular J -space X, we give a... -
Twisted sums of c 0(I)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jessú M.F. Castillo --- Universidad de Extremadura, Instituto de Matemáticas Imuex, Spain Alberto Salguero Alarcón --- Universidad de Extremadura, Instituto de Matemáticas Imuex, SpainWe study in this paper a few remarkable properties of twisted sums Z(κ, X) of c 0(κ) and a Banach space X. We first prove a representation theorem for such twisted sums from which we will obtain, among others, the... -
Smallness in topology
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jiří Adámek --- Czech Technical University, Czech Republic Miroslav Hušek --- Charles University, Czech Republic Jiří Rosický --- Masaryk University, Czech Republic Walter Tholen --- York University, CanadaQuillen’s notion of small object and the Gabriel-Ulmer notion of finitely presentable or generated object are fundamental in homotopy theory and categorical algebra. Do these notions always lead to rather uninteresting classes of objects in categories of topological spaces, such... -
Supported approach spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. Colebunders --- Vrije Universiteit Brussel, België R. Lowen --- Universiteit Antwerpen, BelgiëIn this paper we work in the category of approach spaces with contractions [14], the objects of which are sets endowed with a numerical distance between sets and points. Approach spaces are to be considered a simultaneous generalization of both... -
Some concepts of topology and questions in topological algebra
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.V. Arhangel’skii --- Moscow Pedagogical State University, RussiaThis paper has features of mixed nature. It contains new results, in particular, on semitopological groups. We also pose some problems, introduce new definitions and describe in details certain techniques we need below, providing the proofs of not so well-known... -
The role of Nigerian medical students in the HIV response: lessons from the COVID-19 pandemic
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Daniel Asogun --- Ambrose Alli University, Nigeria Mahmud A. Mahmud --- Ambrose Alli University, Nigeria Akhaine Jesu-Oboh Precious --- Ambrose Alli University, Nigeria Ighodaro Osazuwa --- , United KingdomBackground: With the advent of the COVID-19 pandemic, this study seeks to understand how medical students’ involvement in the HIV response during the COVID-19 pandemic – as well as before and after it – has influenced their decision to specialise... -
The influence of crises on the financial position of multinationals in emerging markets
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Peter Vaz da Fonseca --- Mackenzie Presbyterian University, Brazil Michele Nascimento Jucá --- Mackenzie Presbyterian University, Brazil João Paulo da Torre Vieito --- Polytechnic Institute of Viana do Castelo, PortugalThis investigation is one of the first to analyse the relationships between leverage and bankruptcy costs, interest expenses, tax benefits and firm value, in multinational and domestic companies, during periods of crisis and financial stability. The analysed data are related... -
A note on some classes of operators on C(K,X)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ioana Ghenciu --- University of Wisconsin-River Falls, USA Roxana Popescu --- University of Pittsburgh, USASuppose X and Y are Banach spaces, K is a compact Hausdorff space, Σ is the σ-algebra of Borel subsets of K , C (K, X) is the Banach space of all continuous X-valued functions (with the supremum norm), and... -
Truncated vector lattices: A Maeda-Ogasawara type representation
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Karim Boulabiar --- Université de Tunis El Manar, Tunisia Rawaa Hajji --- Université de Tunis El Manar, TunisiaLet L be a truncated Archimedean vector lattice whose truncation is denoted by *. In a recent paper, we proved that there exists a locally compact Hausdorff space X such that L is a lattice isomorphic with a truncated vector... -
Remarks on weak compactness criteria in variable exponent Lebesgue spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Francisco L. Hernández --- Complutense University of Madrid, Spain César Ruiz --- Complutense University of Madrid, Spain Mauro Sanchiz --- Complutense University of Madrid, SpainWe give two weak compactness Andô type criteria in variable exponent Lebesgue spaces Lp (·) (Ω) on infinite measures. This extends some results of [13] given in the case of finite measures. Spaces Lp (·) (Ω) on infinite measures are... -
A targeted survey for the Durban Dwarf Burrowing Skink Scelotes inornatus (Smith 1849) at Bluff Nature Reserve and Treasure Beach in Durban, KwaZulu-Natal, South Africa, with notes on sympatric herpetofauna
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: AJ Armstrong --- Biodiversity Research & Assessment, South Africa PR Jordaan --- African Ecological Conservation Projects, South AfricaA survey for the Critically Endangered Durban Dwarf Burrowing Skink Scelotes inornatus (Smith 1849) was conducted in two protected areas in Durban, South Africa, in August and September 2021. Twelve sites, each encompassing a combination of vegetation type, elevation, slope... -
Empathy and defender behaviour in bullying of young children: The mediating role of peer status
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yanfang Zhou --- Shaoxing University, China Sihui Wang --- Ningbo University, China Xiaojie Deng --- Ningbo University, China Leishan Shi --- Shaoxing University, ChinaThe present study examined the relationship between empathy and defender behaviour in young children and the mediating role of peer status. Participants were 310 children (girls = 48.1%; mean age = 66.85 months, SD = 7.04 months, age range =... -
Hooded Vultures Necrosyrtes monachus are still declining in West Africa: a nearly 50-year assessment study (1969–2019)
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clément Daboné --- University Centre of Tenkodogo/University Thomas Sankara, Burkina Faso Idrissa Ouédraogo --- University Joseph Ki-Zerbo, Burkina Faso Adama Ouéda --- University Joseph Ki-Zerbo, Burkina Faso Lindy J Thompson --- , South Africa Peter DM Weesie --- University of Groningen, The NetherlandsLarge-scale declines in vulture populations have been recorded in West Africa. One concern is that the current trend in Hooded Vulture Necrosyrtes monachus populations in West Africa is poorly known. To help fill this knowledge gap, we conducted nationwide road... -
Compliance with goodwill impairment disclosure and reasons provided by management: Evidence from South Africa
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E. Louw --- University of Pretoria, South Africa J. H. Hall --- University of Pretoria, South Africa L. M. Brümmer --- University of Pretoria, South AfricaPurpose: The aim of this article is to investigate compliance with the IFRS disclosure requirements regarding goodwill impairment testing in the South African setting, using JSE-listed firms as a sample. The article considers the explanatory strategies used by management to... -
Evaluating the efficacy of a school-based Finnish Gutsy Go programme in enhancing adolescents’ positive mental health, experience of social inclusion, and social competence
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Hanna Ahrnberg --- , Finland Kaija Appelqvist-Schmidlechner --- , Finland Pekka Mustonen --- , Finland Sari Fröjd --- Tampere University, Finland Katja Aktan-Collan --- , FinlandBackground: The Finnish Gutsy Go programme is a positive youth development intervention designed to enhance adolescents’ psychosocial well-being by enabling eighth-grade students to develop and execute good deeds within the community. -
Analysis of rural women’s access to financial services and corporate social responsibility in Nigeria’s Niger delta region
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Joseph Ikechukwu Uduji --- University of Nigeria, Nigeria Elda Nduka Okolo-Obasi --- University of Nigeria, NigeriaThe purpose of this paper is to critically examine the corporate social responsibility (CSR) initiatives of multinational oil companies (MOCs) in Nigeria. Its special focus is to investigate the impact of the global memorandum of understanding (GMoU) on enhancing rural... -
Volunteering dynamics in leisure, tourism and hospitality: developing sustainable practices for well-being and social impact
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Bertine Bargeman --- Breda University of Applied Sciences, The Netherlands Licia Calvi --- Breda University of Applied Sciences, The Netherlands Rodney Westerlaken --- NHL Stenden University of Applied Sciences, The Netherlands Geesje Duursma --- NHL Stenden University of Applied Sciences, The NetherlandsThis article explores the multifaceted landscape of volunteering in leisure, tourism and hospitality (LTH) organisations, acknowledging its fundamental role in civil society, and serves as the inception point for an in-depth research project. Volunteerism is explored in diverse forms, ranging... -
Investigating stimulating factors for customer booking intentions on brand websites
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Marit de Vries --- NHL Stenden University of Applied Sciences, The Netherlands Niels Klein Poelhuis --- NHL Stenden University of Applied Sciences, The NetherlandsCustomers have ample opportunities regarding channels to use to book a hotel room: offline and online. In the online world, the options are using the hotel’s website, referred to as the brand website, or third party internet sites like online... -
Lucerne establishment in dryland conditions: effects of crop residues and wheat as a nurse crop
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Stephan le Roux --- Stellenbosch University, South Africa Pieter A Swanepoel --- Stellenbosch University, South AfricaEstablishing lucerne (Medicago sativa) in dryland conditions poses challenges due to unpredictable rainy seasons and seedling vulnerability. A potential solution is adopting a nurse crop during the first year in the same field. This study aimed to assess the impact... -
Experimental evaluation of a neurophysiological intervention designed to increase student resilience: a pilot study
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Alex Kresovich --- NORC at the University of Chicago, USA Kai MacLean --- NORC at the University of Chicago, USA Caroline M. Lancaster --- NORC at the University of Chicago, USA Elizabeth D. Torres --- University of Texas Medical Branch, USA Jeff R. Temple --- University of Texas Medical Branch, USA Elizabeth A. Mumford --- NORC at the University of Chicago, USASocial and emotional learning (SEL) interventions have shown promise for building resilience and protecting youth from adverse outcomes. This study reports on an experimental pilot evaluation of the Smart Brain Wise Heart SEL intervention during the 2021–2022 school year. Smart... -
Winter storms: a potential threat to African oystercatchers Haematopus moquini
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LG Underhill --- University of Cape Town, South AfricaSubstantial effort has gone into identifying threats to the African oystercatcher Haematopus moquini, a species of seabird native to the mainland coasts and offshore islands of southern Africa. Winter storms represent a possible further threat owing to the potential to... -
On mid (p, r)-compact operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Salthiel Malesela Maepa --- University of Pretoria, South Africa Brian Chihinga Ndumba --- University of Pretoria, South AfricaLet 1 ≤ p ≤ ∞ and 1 ≤ r ≤ p* where p* is the conjugate index of p. We introduce and study mid (p, r)-compact sets and operators. We begin by introducing and defining the mid (p, r)-compact... -
Notes on sublocales and dissolution
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jorge Picado --- University of Coimbra, Portugal Aleš Pultr --- Charles University, Czech RepublicThe dissolution (introduced by Isbell in [3], discussed by Johnstone in [5] and later exploited by Plewe in [12, 13]) is here viewed as the relation of the geometry of L with that of the more dispersed T(L) = S(L)op... -
Variations in the heart rate of Mediterranean mussels Mytilus galloprovincialis and brown mussels Perna perna under thermal stress on rocky shores of South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: K Beine --- University of Johannesburg, South Africa LJ Connell --- University of Johannesburg, South Africa R Greenfield --- University of Johannesburg, South AfricaIntertidal mussels experience prolonged emersion during low tide, followed by rapid submergence cooling during high tide, causing temperature-induced stress responses. This study examined variations in heart rate to investigate the relationship between emerged and submerged thermal stress in Mediterranean mussels... -
To move or not? Tourists’ perceptions and management considerations of a beached whale carcass in a South African national park and marine protected area
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MKS Smith --- , South Africa GS Penry --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa MM Mokhatla --- , South AfricaThe handling of beached cetacean carcasses requires social, legal, financial, ecological and logistical considerations. However, limited research on the topic hinders informed decision-making. A large humpback whale carcass that washed ashore at a South African marine protected area (MPA) provided... -
Catalysts of social change and innovation: Mediating role of social self-efficacy and social support on social entrepreneurial intentions
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Abin John --- Bharathidasan University, India Vanitha Selvaraj --- Bharathidasan University, India Muhammed Jisham --- Bharathidasan University, IndiaThere has been a recent surge in social entrepreneurship to address pressing social problems. Social ventures drive positive change and reshape traditional business norms by providing innovative solutions and fostering inclusive growth. Social entrepreneurial intention (SEI) is crucial to studying... -
Strengths mindset and job satisfaction: The mediating role of thriving at work and the moderating role of authentic leadership
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yang Liu --- North China Electric Power University, China Shunkun Yu --- North China Electric Power University, China He Ding --- North China Electric Power University, ChinaWe examined whether thriving at work mediated the relationship between strengths mindset and job satisfaction, as well as the moderating role of authentic leadership within this relationship. Data were gathered from 717 employees (female = 46%; mean age = 31.77... -
Some properties in vector sequence spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ioana Ghenciu --- University of Wisconsin-River Falls, River Falls, USA Roxana Popescu --- University of Pittsburgh, USASome classes of operators T on are characterized in terms of the induced operators Tn on each Xn . We study pseudo weakly compact, limited completely continuous, q-convergent, DP q-convergent, limited q-convergent, weak Dunford-Pettis, weak* Dunford-Pettis, weak q-convergent, weak* q-convergent... -
Long-term interannual temperature variability across the KwaZulu-Natal Bight as a technique for monitoring the complex uThukela Marine Protected Area, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Ramsarup --- University of Cape Town, South Africa T Morris --- , South Africa J Hermes --- University of Cape Town, South Africa M Dicken --- Institution for Coastal and Marine Research, Ocean Sciences Campus, Nelson Mandela University, South AfricaThe uThukela Marine Protected Area (MPA), situated on the continental shelf of the KwaZulu-Natal (KZN) Bight on the northeastern coast of South Africa, has been identified as a vital ecological region. Knowledge of the oceanographic dynamics in the region is... -
Socio-ecological change in bait fisheries for the common sandprawn Kraussillichirus kraussi in Durban Harbour, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Chetty --- Oceanographic Research Institute (ORI), South Africa E Steyn --- Oceanographic Research Institute (ORI), South Africa JC Groeneveld --- Oceanographic Research Institute (ORI), South AfricaBait fishing for the common sandprawn Kraussillichirus kraussi in Durban Harbour, on the east coast of South Africa, has a history going back to the early 20th century and has been influenced by port development and political changes over time... -
Lebesgue-Fourier algebras on coset spaces and approximate amenability
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maryam Esfandani --- Isfahan University of Technology, Iran Rasoul Nasr Isfahani --- Isfahan University of Technology, IranLet K be a compact subgroup of a locally compact group G. In this work, we initiate an investigation of the Lebesgue-Fourier algebra S 1 A(G/K) on the coset space G/K with pointwise multiplication; after some general results on the... -
Upward social comparisons on social networking sites (SNSs) and subjective well-being: The mediating role of envy
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yongzhan Li --- Xuchang University, ChinaThis study examined the mediating role of envy in the relationship between upward social comparison on social networking sites (SNSs) and subjective well-being. Participants were 1 078 college students (male = 46.01%, female = 53.99%; freshmen = 27.18%, sophomores =... -
Short-video usage and female college students’ restricted diets: a chain mediation model
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tingting Fu --- Normal University, China Xiong Li --- Guangzhou Huashang Vocational College, China Xuesong Wei --- Guangxi Technology and Business Vocational College, China Jun Qin --- Normal University, ChinaWith the popularity of short-video platforms, people’s self-concept and body views are everyday concerns, including their dieting. How short-video platforms impact people’s dieting especially for female college students, remain unclear. This study examines the mediating paths between short-video usage and... -
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... -
How can work improve family life quality? The influence of thriving at work on family role performance and work–family balance satisfaction
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shaoqing Su --- Northwest Normal University, People’s Republic of China Baoyan Yang --- Northwest Normal University, People’s Republic of China Zhaobiao Zong --- East China Normal University, People’s Republic of China Zhao Zhang --- Lanzhou Modern Vocational College, People’s Republic of ChinaThis study examined how career success related to employees’ family life quality, with interpersonal capitalisation between employees’ work and family life, controlling for employees’ proactive personality. We sampled married employees from Northwest China (n = 154, females = 53.2%, mean... -
Patent-paper citations: A window into the technological impact of Tunisian research
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ridha Mhamdi --- Centre of Biotechnology of Borj-Cedria, TunisiaThis study constitutes the first report evaluating research performance at a national level by analyzing literature references cited in patents. The objective is to quantify the technological impact of the Tunisian research through patent-paper citations. Using the SciVal research analytics... -
A note on the U-Dunford-Pettis operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Farid Afkir --- Moulay Ismail University of Meknes, Morocco Aziz Elbour --- Moulay Ismail University of Meknes, MoroccoThe purpose of this note is to give a correct proof of the theorem that concerns the domination property of the class of U-Dunford-Pettis operators obtained by O. Aboutafail, K. El Fahri, J. H’Michane and L. Zraoula [On the class... -
The D-property of extremely normal spaces and the metrizability of certain compact spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Liang-Xue Peng --- Beijing University of Technology, ChinaIn this article, we show that every extremely normal space is a D-space. We introduce a notion called weakly extremely normal with respect to a weak base for a space X. We show that if a space X is weakly... -
Quality characteristics of forage in the sowing year of a standard perennial pasture established with annual ryegrass, barley, and berseem clover as companion crops
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Hasan Beytullah Dönmez --- Çukurova University, Turkey Rustu Hatipoglu --- Kırşehir Ahi Evran University, TurkeyThis study was conducted to determine the effect of different seed sowing rates (25%, 50%, 75%, 100% of the recommended pure stand of the species) and harvesting stages (early harvest, late harvest) of annual ryegrass, barley, and berseem clover used... -
Banaschewski compactifications via special rings of functions in the absence of the Axiom of Choice
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alireza Olfati --- Yasouj University, Iran Eliza Wajch --- University of Siedlce, PolandFor a topological space is the ring of all continuous real functions f on X such that, for every real number ϵ > 0, there exists a countable clopen cover of X such that the oscillation of f on each... -
Influence of water physico-chemical properties and vegetation type on the distribution of schistosomiasis intermediate host snails in Nelson Mandela Bay, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PS Campbell --- Nelson Mandela University, South Africa JB Adams --- Institute for Coastal and Marine Research and Department of Botany, Nelson Mandela University, South Africa M Thwala --- Nelson Mandela University, South Africa O Oyedele --- Nelson Mandela University, South Africa PE Melariri --- Nelson Mandela University, South AfricaSchistosomiasis is an infectious water-borne disease transmitted by Schistosoma flatworms. Humans become infected through skin penetration following exposure to water contaminated with schistosome cercariae. This study assessed the physico-chemical properties of the water bodies, vegetation type, distribution and habitat presence... -
The number of human-simulated predators influences the escape behaviour of bird species in a West African protected area
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Ngozi M Okafor --- AP Leventis Ornithological Research Institute, Nigeria Soladoye B Iwajomo --- University of Lagos, Nigeria Bukola DA Azaki --- University of Cape Town, South Africa Manu A Shiiwua --- AP Leventis Ornithological Research Institute, NigeriaContinuous human presence in protected and recreational areas can adversely affect wildlife. Birds perceive the approach by humans as predatory and mostly flee in response, which can be energetically costly, and leads to disruption of foraging activities and interactions with... -
A shelf-scale assessment of GLORYS and BRAN ocean reanalysis model outputs for the southern Benguela Upwelling System
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AM Kupczyk --- Fisheries and the Environment (DFFE), South Africa T Lamont --- Fisheries and the Environment (DFFE), South Africa I Halo --- Fisheries and the Environment (DFFE), South Africa CS Russo --- Fisheries and the Environment (DFFE), South Africa T Rixen --- Institute for Geology, Universität Hamburg, Germany N Lahajnar --- Institute for Geology, Universität Hamburg, GermanyThe Benguela Upwelling System, with its high variability and productivity, is challenging to monitor owing to limited in situ ocean observations. Researchers therefore often use ocean reanalysis products to simulate oceanographic conditions. We evaluated the performance of the GLORYS and... -
HIV incidence and prevalence projections for Zimbabwe: Findings from five mathematical models
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Isaac Taramusi --- UNAIDS UCO Zimbabwe, Zimbabwe John Stover --- , United States of America Robert Glaubius --- , United States of America Tsitsi Apollo --- Ministry of Health and Child Care, Zimbabwe Getrude Ncube --- Ministry of Health and Child Care, Zimbabwe Owen Mugurungi --- Ministry of Health and Child Care, Zimbabwe Ngwarai Sithole --- Ministry of Health and Child Care, Zimbabwe Loveleen Bansi-Matharu --- Institute for Global Health, University College London, United Kingdom Jenny Smith --- Institute for Global Health, University College London, United Kingdom Andrew Phillips --- Institute for Global Health, University College London, United Kingdom Valentina Cambiano --- Institute for Global Health, University College London, United Kingdom Daniel T Citron --- New York University Grossman School of Medicine, United States of America Anna Bershteyn --- New York University Grossman School of Medicine, United States of America Debra ten Brink --- Burnet Institute, Australia Rowan Martin-Hughes --- Burnet Institute, Australia Michael Pickles --- Medical Research Council Centre for Global Infectious Disease Analysis, Imperial College London, United Kingdom Paul Revill --- University of York, United Kingdom Amon Mpofu --- National AIDS Council of Zimbabwe, Zimbabwe Jeffrey Imai-Eaton --- Chan School of Public Health, Center for Communicable Diseases Dynamics, Harvard University, United States of America Richard Makurumidze --- Faculty of Medicine and Health Sciences, University of Zimbabwe, Zimbabwe Simbarashe Rusakaniko --- Faculty of Medicine and Health Sciences, University of Zimbabwe, ZimbabweIntroduction: Understanding how HIV epidemics are likely to behave in the future is key to informing HIV response strategies in low-income countries. Up-to-date HIV epidemiological estimates are important for policy decision- making, but surveillance data can be out of date... -
Influence of self-compassion on HIV-related stigma, health-related quality of life, and depression among HIV/AIDS patients
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Chinenye Joseph Aliche --- North West University, South Africa Erhabor Sunday Idemudia --- North West University, South Africa Michael O. Ezenwa --- Nnamdi Azikiwe University, NigeriaBackground: People living with HIV/AIDS (PLWHA) may experience HIV-related stigma, which could negatively impact health-related quality of life (HRQoL) and increase symptoms of depression. Self-compassion is a positive personality attribute that may protect PLWHA against stigmatisation. Previous studies have not... -
Three decades of research on olive mill waste: A patent citation analysis
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ridha Mhamdi --- Centre of Biotechnology of Borj-Cedria, TunisiaThis paper investigates the technological impact of research on olive mill wastes (OMW) by analyzing patent citations. Using a dataset of 2448 publications from Scopus, we identified 151 papers cited by patents. The results show a moderate correlation between academic... -
Operators whose adjoints and second adjoints are almost Dunford-Pettis
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Geraldo Botelho --- Universidade Federal de Uberlândia, Brazil Luis Alberto Garcia --- Instituto de Ciências Exatas, Universidade Federal de Juiz de Fora, BrazilFirst we characterize the Banach lattices E whose biduals have the positive Schur property by means of second adjoints of operators on E being almost Dunford-Pettis. Next we extend some known results concerning conditions on the Banach lattices E and... -
Digital transformation and goodwill impairment
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Yan Zhao --- Beijing Wuzi University, China Honglin Liu --- Wuhan Textile University, China Libin Zhao --- Wuhan Textile University, China Wei Zhang --- Wuhan Textile University, ChinaWe utilise a sample M&A listed on the Chinese A-shares market between 2008 and 2021. Our focus is specifically on A-share listed companies that acted as acquiring firms. We conduct an empirical analysis to investigate how their digital transformation influences... -
Heavy metal contamination in mangrove ecosystems: assessing bioaccumulation in crabs and snails along the Bayelsa Coast, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HO Adamu --- University of Bremen, Germany JI Izegaegbe --- University of Eastern Finland, Finland RO Hussaini --- Ambrose Alli University, Nigeria EM Odoya --- Ambrose Alli University, Nigeria HO Adamu --- Federal Ministry of Water Resources, NigeriaRapid human population growth and industrial activities along coastal areas have intensified anthropogenic contamination in water, sediment and edible fauna, posing public health risks. Mangrove ecosystems act as pollutant sinks, increasing the likelihood of heavy metal accumulation in aquatic organisms... -
Seasonal effects on surface water quality in the Awetu River, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Mohammedsalih Kadir Gobana --- Jimma University, Ethiopia Alemayehu Haddis Getahun --- Jimma University, Ethiopia Dessalegn Dadi Olani --- Jimma University, EthiopiaUnderstanding the impact of seasonal variation on surface water provides a better understanding of pollution dynamics and the implementation of sustainable water-use and management strategies. The objective of this study was to assess the impact of seasonal variation on surface... -
Comparing seismic survey mitigation regulations: lessons for South Africa from international frameworks
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Purdon --- Tshwane University of Technology, South Africa MJ Somers --- University of Pretoria, South Africa FW Shabangu --- University of Pretoria, South Africa Y Doh --- , France J Scheun --- Tshwane University of Technology, South AfricaUnderwater seismic surveys generate high-intensity, low-frequency noise that can negatively affect a range of marine fauna. As a result, countries have implemented mitigation regulations to reduce the potential impacts of this activity. This study examines seismic survey mitigation regulations from... -
Palearctic White Storks Ciconia ciconia in the Western Cape, South Africa, in the 20th century
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Les G Underhill --- University of Cape Town, South AfricaAt the start of the 20th century, the southern limit of the nonbreeding range of the White Stork Ciconia ciconia, a migrant from the Palearctic, was considered to be at the Orange River; they moved around opportunistically in this area... -
Distribution and movement patterns of white musselcracker Sparodon durbanensis, a South African endemic seabream
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute (ORI), South Africa GL Jordaan --- Oceanographic Research Institute (ORI), South Africa R Daly --- Oceanographic Research Institute (ORI), South Africa WN Dalton --- Oceanographic Research Institute (ORI), South Africa PA Watt-Pringle --- Oceanographic Research Institute (ORI), South Africa K Hewett --- Rhodes University, South Africa WM Potts --- Rhodes University, South AfricaThe white musselcracker Sparodon durbanensis (family Sparidae) is a highly prized shore angling and spearfishing species. This study investigated its movement behaviour along the southeastern seaboard of South Africa, using tag-recapture data. A total of 3 378 S. durbanensis were... -
Impact of catch and release on the welfare of bronze seabream Pachymetopon grande in the South African marine shore-based fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: EC Butler --- Rhodes University, South Africa MW Farthing --- Rhodes University, South Africa CS Bova --- Rhodes University, South Africa A-R Childs --- Rhodes University, South Africa WM Potts --- Rhodes University, South AfricaThe practice of catch-and-release (C&R) angling is increasingly being integrated into recreational fisheries as a conservation strategy to promote sustainability. However, C&R can still have lethal or sublethal effects owing to various stressors involved in the act of angling. Using... -
Comparing the activity of exploited and unexploited populations of a reef-dwelling seabream, Chrysoblephus laticeps, during an extreme upwelling and cold-spell event
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: NT Mlotshwa --- Rhodes University, South Africa MR Skeeles --- Rhodes University, South Africa MI Duncan --- Rhodes University, South Africa C Muller --- Rhodes University, South Africa WM Potts --- Rhodes University, South Africa AC Winkler --- Rhodes University, South Africa A-R Childs --- Rhodes University, South AfricaAlong the south coast of South Africa, extreme upwelling events lead to rapid temperature declines and prolonged marine cold-spells, which have, on occasion, led to large-scale mortalities of coastal fishes. In a somewhat antagonistic process, fishing exploitation has been shown... -
Invasion of Neltuma juliflora (mesquite) and its effects on soil physicochemical properties in a semi-arid rangeland of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Siviwe Odwa Malongweni --- Sol Plaatje University, South AfricaInvasive species threaten ecosystem functions in African rangelands by altering soil properties, and affecting overall health and productivity. This study compared soil physicochemical characteristics under invasive Neltuma juliflora and native Vachellia karroo across two zones (beneath tree canopy versus open... -
Pelczyński’s property (V) and (V∗) on tensor products and spaces of compact operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Qingying Bu --- University of Mississippi, University, USALet U be a reflexive Banach space with an unconditional basis and X be any Banach space. We show that if X has Pelczyński’s property (V) then (U,X) has Pelczyński’s property (V). We also show that if X has Pelczyński’s... -
Approximation and Compactness
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. Colebunders --- Vrije Universiteit Brussel, België R. Lowen --- Universiteit Antwerpen, BelgiëIn approach theory convergence is described by means of limit and adherence operators acting on filters or ultrafilters. The value of the limit resp. adherence operator on an (ultra)filter in a point x is interpreted as the distance that the... -
Comparative benchmarking of fertiliser uses for oilseed crop production in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: HT Ottermann --- , South Africa SJ Haarhoff --- Stellenbosch University, South Africa KJ Truter --- , South Africa F Meyer --- , South Africa D van der Westhuizen --- , South Africa PA Swanepoel --- Stellenbosch University, South AfricaThis study comparatively benchmarks fertiliser use over two periods (2013–2015; 2021–2023) in South Africa's oilseed crop production [soybean (Glycine max), canola (Brassica napus) and sunflower (Helianthus annuus)] against global trends, with a focus on major oilseed exporters. It explores fertiliser... -
A morpho-syntactic analysis of qualifiers in Bantu languages
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Rivalani Xenon Masonto --- University of Zululand, South Africa Elliot Mthembeni Mncwango --- University of Zululand, South AfricaThe aim of this article is to comparatively analyse qualifiers in Bantu languages for structural positioning and syntactic functions. It focuses specifically on Xitsonga, isiZulu, Northern Sotho, and Swahili. Qualitative methods were employed. Data were collected through interviews and document... -
The grazing paradox: assessing contradictions of continuous versus rotational grazing systems in southern Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Katharina Meyer --- Institute of Plant Science and Microbiology, University of Hamburg, Germany Ute Schmiedel --- Institute of Plant Science and Microbiology, University of Hamburg, GermanyUnsustainable grazing practices result in degradation of arid and semiarid rangelands in southern Africa. Continuous grazing systems are often blamed for degradation, while rotational grazing systems are seen as more sustainable. The discussion about the impact of these grazing practices... -
A private company perspective of the audit expectation gap
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Ané Church --- School of Accountancy, University of the Free State, South Africa Frans E. Prinsloo --- School of Accountancy, University of the Free State, South Africa
