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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... -
Optimising stocking rate under commercial and subsistence pastoralism optimisering van veelading by kommersiele en bestaansveeboerdery
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: M.T. Mentis --- Department of Grassland Science,Hopes for a single criterion of overstocking are forlorn. Livestock may be kept for any of many purposes, and the stocking rate optimal for one is not necessarily so for another. Conflicts might be resolved by (1) recognising the likely... -
Communal land use and the ‘tragedy of the commons’: Some problems and development perspectives with specific reference to semi‐arid regions of southern Africa
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: E.A. Boonzaier --- Department of Social Anthropology, Republic of South Africa M.T. Hoffman --- Department of Botany, Republic of South Africa FionaM. Archer --- Department of Botany, Republic of South Africa A.B. Smith --- Department of Archaeology, Republic of South AfricaTraditional communal farming in southern Africa has often been described as unproductive and directly responsible for regional poverty and vegetation degradation. Each aspect of this argument rests on a set of unchallenged assumptions concerning the nature of communal farming. Studies... -
The incompatibility of controlled selective grazing systems with farmers’ needs
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G.H. Düvel --- S.A. Institute for Agricultural Extension, Republic of South Africa H.P.J. Scholtz --- Department of Agricultural Development, Republic of South AfricaSince extension inputs, subsidy schemes and even legislation over several decades were unable to stem the veld deterioration in southern Africa, a renewed attempt was made to identify the causes of the non‐adoption of recommended veld management practices. The hypothesis... -
Relations between woody and herbaceous components and the effects of bush‐clearing in southern African savannas
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: W.R. Teague --- , Republic of South Africa G.N. Smit --- , Republic of South AfricaThe relations between woody and herbaceous plants in southern African savannas are reviewed in the context of pastoral use. Current knowledge is summarized, important gaps are indicated and research priorities are suggested. Although all savannas consist of a grass and... -
Nitrogen mineralization, nitrification and nitrogen balance in laboratory incubation of soil from natural grassland in the central Orange Free State
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.H. Wiltshire --- Department of Soil Science, Republic of South AfricaAir-dried soil from three layers under grassveld was moistened by the addition of 12 levels of water and incubated for up to two years at five temperatures in screw-capped preserving jars with an air-filled head- space equivalent to seven times... -
Long-term effects of conservation practices on the nitrogen fertility of a soil cropped annually to wheat
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G.H. Wiltshire --- Department of Soil Science, Republic of South Africa C.C. du Preez --- Department of Soil Science, Republic of South AfricaSustainable farming in the semi-arid interior of South Africa requires the adoption of conservation practices to maintain and, if possible, increase soil fertility. The effects of some such practices on the nitrogen fertility of a hydromorphic sandy clay loam soil... -
The effects of tillage systems on soil bulk density and penetrometer resistance of a sandy clay loam soil
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.T. Steyn --- Small Grain Centre, Republic of South Africa J. P.C. Tolmay --- Small Grain Centre, Republic of South Africa J.J. Human --- Department of Agronomy, Republic of South Africa W.H. Kilian --- Small Grain Centre, Republic of South AfricaConcern has been expressed that reduced tillage systems may lead to excessive soil compaction, with a negative impact on crop growth. The objectives of this study were to determine the effects of different tillage systems, namely, minimum tillage (disc and... -
Die invloed van grondbewerking op vroeë wortelontwikkeling en biomassa van koringkultivars (Triticum aestivum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.T. Steyn --- , Republiek van Suid-Afrika J. P.C. Tolmay --- , Republiek van Suid-Afrika J.J. Human --- Departement Agronomie, Republiek van Suid-AfrikaDit is bekend dat 'n goeie wortellengte en/of worteldigtheid in die eerste paar weke belangrik is om goeie saailingvestiging te verkry. Die doel van hierdie studie was om die uitwerking van minimumbewerking (wisselgangskotteleg en vlerkskaar), beitelploeg- en konvensionele bewerking op... -
Long and short term effects of tillage systems on grain yield, the incidence of diseases and production costs for maize
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.F. Lawrance --- , Republic of South Africa M.A. Prinsloo --- , Republic of South Africa W. A.J. Berry --- , Republic of South AfricaThe effect of four tillage systems on grain yield of maize, incidence of diseases and production costs was investigated for a Hutton soil in the Natal Midlands from 1982 to 1995. The four tillage systems were no-till (NT), reduced tillage... -
High-density orchards improve the quality of ‘Songold’ plums from lower, more shaded canopy positions
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. Kruger --- Department of Horticultural Science, South Africa D.M. Holcroft --- Department of Horticultural Science, South Africa M. Huysamer --- Department of Horticultural Science, South Africa N.C. Cook --- Department of Horticultural Science, South AfricaGel breakdown is a major postharvest problem in ‘Songold’ plums (Prunus salicina Lindl.) that is exacerbated in fruit harvested from lower canopy positions in large trees. Modern high-density orchards with small trees aggressively address this problem through improved light distribution... -
Advances in sugarcane soil fertility research in Southern Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.H. Meyer --- , R. van Antwerpen --- ,The South African sugar industry is a modern, well organised industry and highly cost-competitive in world terms, producing some 2.3 million tons of sugar annually from 20 million tons of cane. The bulk of the cane is produced by some... -
Growth, yield and grain protein content of wheat (Triticum aestivum L.) in response to nitrogen fertiliser rates, crop rotation and soil tillage
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: GA Agenbag --- Department of Agronomy, South AfricaSoil tillage affects both the profitability and sustainability of cropping systems. Minimum- and no-tillage systems are promoted because research has shown that these systems may reduce production costs and improve biological sustainability when compared to conventional systems, in which mouldboard... -
How can Human Beings Transgress their Biologically Based Views?
Item type: Journal Article • Journal: South African Journal of Philosophy • Authors: Michael Vlerick --- Department of philosophy, South-AfricaEmpirical evidence from developmental psychology and anthropology points out that the human mind is predisposed to conceptualize the world in particular, species-specific ways. These cognitive predispositions lead to universal human commonsense views, often referred to as folk theories. Nevertheless, humans... -
NUTRIENTS AND THE PRODUCTIVITY OF ESTUARINE AND COASTAL MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: S.W. Nixon --- Marine Ecosystems Research Laboratory, United States of America C.A. Oviatt --- Marine Ecosystems Research Laboratory, United States of America J. Frithsen --- Marine Ecosystems Research Laboratory, United States of America B. Sullivan --- Marine Ecosystems Research Laboratory, United States of AmericaRecent research on estuarine and coastal marine systems has revealed two particularly interesting things about nutrients and productivity. First is the observation that these areas are among the most intensively fertilized environments on earth. Second is the common finding that... -
DEEP SEA, ESTUARINE AND FRESHWATER FISHES: LIFE HISTORY STRATEGIES AND ECOLOGICAL BOUNDARIES
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: S. J.M. Blaber --- Division of Fisheries, AustraliaThe life histories of fishes from three different ecosystems are compared and discussed with emphasis on species that move between habitats: between estuary and sea in tropical northern Australia; between bottom waters and pelagic waters of the temperate continental slope... -
COASTAL AQUATIC ECOSYSTEMS, CONSERVATION AND MANAGEMENT STRATEGIES IN NIGERIA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E.A. Ajao --- , NigeriaThe coastal ecosystems in Nigeria are classified into four broad regions according to differences in general morphology, vegetation and beach type. They are the barrier lagoon complex, the transgressive mud beach, the Niger delta and the strand coast. The delta... -
THE EFFECTS OF TROUT-FARM EFFLUENTS ON BENTHIC INVERTEBRATE COMMUNITY STRUCTURE IN RIVERS IN THE SOUTH-WESTERN CAPE, SOUTH AFRICA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: C.A. Brown --- Freshwater Research Unit, Zoology Department, J.M. King --- Freshwater Research Unit, Zoology Department,The south-western Cape is currently responsible for 45% of the total annual trout production in South Africa and further expansion of this industry in the region is likely. A preliminary survey of seven trout farms situated on the upper reaches... -
A COMPARISON OF THE FOOD SOURCES OF STONEFLIES (PLECOPTERA) FROM AN OPEN-AND A CLOSED-CANOPY HEADWATER STREAM IN SOUTH AFRICA USING STABLE-ISOTOPE TECHNIQUES
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E. Reynolds --- , , South Africa C. de Villiers --- , , B. R. Davies --- , , South AfricaThe effects of different local food resources on the diets of some filipalpian stonefly nymphs (Aphanicerca spp.) were investigated. Animals from two headwater reaches, one primarily allochthonously driven and the other an open-canopied autochthonous-based system were compared. However, gut and... -
Monitoring in a complex world — seeking slow variables, a scaled focus, and speedier learning
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T.J.P. Lynam M. Stafford SmithRecent developments from complex systems theorists provide new insights into our understanding and, hence, monitoring of rangelands. Designing monitoring systems around the slow variables should lead to the generation of information that could greatly improve decision making in an adaptive... -
Rangeland assessment and monitoring: the elusive elixir
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: P.J.K. Zacharias'Classical' rangeland monitoring is discussed in the context of its fitness-for-purpose. The theoretical or descriptive models that underpin global approaches are considered and reviewed. The needs and types of measurements are discussed as are developments in southern Africa over three... -
The Ellis paradigm — humans, herbivores and rangeland systems
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Michael CoughenourThe scientific and conceptual contributions Jim Ellis made throughout the course of his career reveal a logical progression towards increased understanding of pastoral ecosystems worldwide. Research in wildlife, large herbivores, systems ecology and energy flows through grazing ecosystems formed the... -
Perspective: Towards improved grazing management recommendations for sourveld
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: K.P. Kirkman --- , Republic of South Africa A. Moore --- , Republic of South AfricaCritical evaluation of grazing management recommendations for sourveld revealed scientific, economic and practical deficiencies. These recommendations are seldom adopted. Recent scientific evidence has facilitated the adoption of certain principles in new practical, economically viable recommendations aimed at maintaining or improving... -
Long‐term effects of different rotational grazing schedules on the productivity and floristic composition of Tall Grassveld in KwaZulu‐Natal
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C.D. Morris --- Department of Grassland Science, Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaNine simulated rotational grazing systems, comprising combinations of three different periods of occupation (2, 10 and 20 days) and three periods of absence (20, 40 and 60 days), were applied to Tall Grassveld for 24 years (1967–1991), using sheep. All... -
Perspective: Animal‐vegetation relations which optimise production, utilisation and protection of natural resources: An African experience
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: T. Nolan --- , IrelandThe broad objective is to improve the standard of living of farmers/herders through identification of complementary vegetation‐use under mixed animal species grazing. This paper aims to (1) review mixed‐grazing research and development carried out in Ireland and in the semi‐arid... -
The sociocultural contexts and meanings associated with livestock keeping in rural South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Andrew Ainslie --- School of Agriculture, Policy and Development, UKThis paper complements Vetter's position paper, ‘Development and sustainable management of rangeland commons – aligning policy with the realities of South Africa's rural landscape’ (Vetter in this issue). It seeks to advance the debate regarding the contemporary nature of livestock... -
Degradation of communal rangelands in South Africa: towards an improved understanding to inform policy
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: AnthonyR Palmer --- , South Africa JamesE Bennett --- Department of Geography, Environment and Disaster Management and Centre for Agroecology and Food Security, UKIn South Africa, the relative extent of range degradation under freehold compared to communal tenure has been strongly debated. We present a perspective on the processes that drive rangeland degradation on land under communal tenure. Our findings are based on... -
Adaptive management for complex communal rangelands in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Nicky Allsopp --- , South AfricaMany of the intransigent problems facing the world arise in complex systems. In this paper, I propose that communal rangelands in South Africa be recognised as complex social–ecological systems and that one of the reasons that development initiatives have had... -
Towards an Information System for Forestry
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Christoph Kätsch --- Department of Forest Science, BrianV. Bredenkamp --- Department of Forest Science,Management of information as a production factor is imperative in modern forestry practice. However, development of individual application programmes has resulted in systems which cannot be integrated without excessive effort and expense. It is shown that the route to an... -
A review of site-growth studies in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: J.H. Louw --- ,The intensive nature of the South African forest industry requires reliable decision support systems to enhance site-specific silviculture. Furthermore, the principle of ecologically sustainable forest management requires a profound improvement in the understanding of the factors controlling tree growth and... -
South African Adolescents' Career Development through the Lens of the Systems Theory Framework: An Exploratory Study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mary McMahon --- The University of Queensland, Mark Watson --- Nelson Mandela Metropolitan University, Cheryl Foxcroft --- Nelson Mandela Metropolitan University, Asha Dullabh --- Nelson Mandela Metropolitan University,Adolescent career development has predominantly been studied in the context of middle class Eurocentric cultures and there have been calls for greater attention to the career development of non-dominant and disadvantaged groups. Further, there have been calls to explore career... -
A Psychology of Indigenous Healing in Southern Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen David Edwards --- University of Zululand,Converging lines of evidence from various scientific disciplines consistently point to humanity's African roots. In this context, the term “indigenous healing” is used to refer to universal forms of healing that began in Africa and were developed further both locally... -
Cultural Embeddedness of Health, Illness and Healing: Prospects for Integrating Indigenous and Western Healing Practices
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tholene Sodi --- University of Limpopo, South Africa Olaniyi Bojuwoye --- University of the Western Cape, South AfricaCulture influences conceptualizations about illness, health and healthcare. In this article we argue that Western-oriented health care models have limited success when applied to health conditions of people of non-Western cultures and contend that culture is an important factor in... -
A Lemma On C 0 -semigroups And Applications
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Hugo LeivaIn this note we characterize a large class of C 0-semigroups which can be applied to prove the existence and the uniqueness of the solutions of many systems of partial differential equations. In fact, we apply our result to a... -
Approximate Conserved Quantities of Conservative Dynamical Systems in R 3
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: G. Ünal C.M. KhaliqueApproximate generalized symmetries associated with the resonances of conservative dynamical systems in R 3 have been discussed. It has been shown that an approximate first integral (conserved quantities) can be found from the knowledge of two conservative approximate symmetries. Furthermore,... -
Approximate First Integrals of a Chaotic Hamiltonian System
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: G. Ünal C.M. Khalique G.F. AlişverişçiApproximate first integrals (conserved quantities) of a Hamiltonian dynamical system with two-degrees of freedom which arises in the modeling of galaxy have been obtained based on the approximate Noether symmetries for the resonance ω 1 = ω 2. Furthermore, Kolmogorov-Arnold-Moser... -
OPTIMAL SYSTEMS OF SYMMETRY SUBALGEBRAS FOR BIG MODELS OF GASDYNAMICS
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. V. Khabirov --- Institute for Symmetry Analysis and Mathematical Modelling, University of North-West, Mmabatho, South Africa,The gasdynamics equations admit 11 dimensional Lie algebra of transformations for the abitrary state equations. For special state equations the algebra may be expanded. There are 13 special state equations for which the gasdynamics equations are named big models. Some... -
South Africa youths’ higher-risk sexual behaviour: an eco-developmental analysis
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Monde Makiwane --- Child, Youth, Family and Social Development, South Africa Zitha Mokomane --- Child, Youth, Family and Social Development, South AfricaDespite their high levels of knowledge about HIV and AIDS, young people ages 15–24 years in South Africa remain disproportionately affected by the epidemic. Young people's continued susceptibility to HIV infection has been consistently linked to intractable higher-risk sexual behaviours... -
African communalism and public health policies: the relevance ofindigenous concepts of personal identity to HIV/AIDS policies in Botswana
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Kipton Jensen --- Department of Philosophy and Religion, United States JosephBR Gaie --- Department of Religious Studies, Theology and Philosophy, BotswanaThis article explores the possible relevance of African communalism to HIV/AIDS policies in Botswana and other parts of sub-Saharan Africa. We examine various interpretations of African communalism, which many consider to be the cardinal insight of African thought. We suggest... -
Clinics and home-based care organisations: an interface between theformal and informal health sectors
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Adam Kenneth Boros --- , South AfricaThe article outlines the findings of a study designed to explore the working relationship between home-based caregivers and clinic nurses at locations in two informal settlements in Johannesburg, South Africa. By considering the views and experiences of both sponsored and... -
Why HIV/AIDS should be treated as exceptional: arguments from sub-Saharan Africa and Eastern Europe
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Julia Smith --- , United Kingdom Khaled Ahmed --- , South Africa Alan Whiteside --- , South AfricaThe idea that HIV and AIDS gets too much attention and funding emerged in 2008 with a call to end 'AIDS exceptionalism.' This article outlines a short history of AIDS exceptionalism — the idea that HIV and AIDS require a... -
Water policy in southern Africa: A brief synopsis of some of the macro driving forces
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR TurtonThe water sector reforms that are underway in many parts of southern Africa are a manifestation of a global phenomenon. This is rooted in the human response to the undesirable consequences of development, and seeks to introduce the notion of... -
The development of a GIS atlas of southern African freshwater fish
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LEP Scott PH Skelton AJ Booth L VerheustA geographic information systems (GIS) based atlas of southern African freshwater fish has been developed for the SADC countries. The JLB Smith Institute of Ichthyology, in collaboration with ALCOM, has developed a database of freshwater fish for this region from... -
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... -
A method for monitoring mangrove harvesting at the Mngazana estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Anusha Rajkaran JanineB Adams DerekR du PreezThe Mngazana estuary supports the third largest area of mangroves, and probably the largest stand of Rhizophora mucronata Lamk., in South Africa. The objective of this study was to determine the extent of harvesting in the Mngazana mangrove forest, using... -
Spatial variability in macroinvertebrate assemblages: comparing regional and multivariate approaches for classifying reference sites in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HelenF DallasSpatial variability in macroinvertebrate assemblages was examined with the aim of evaluating the utility of regional classification systems in aquatic bioassessment. Sampling was undertaken at reference sites in the Western Cape and Mpumalanga, South Africa, using the rapid bioassessment method... -
Application of the Indicators of Hydrological Alteration method to the Mkomazi River, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: V Taylor --- , South Africa R Schulze --- , South Africa G Jewitt --- , South AfricaHydrological regimes play a major role in structuring the biotic diversity within river ecosystems and hydrological variation is recognised as a primary driving force within those ecosystems. The US Nature Conservancy developed a method known as the Indicators of Hydrological... -
Algae, phytoplankton and eutrophication research and management in South Africa: past, present and future
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CE van Ginkel --- , South AfricaA brief history of South African research on and management of algae-, phytoplankton- and eutrophication-related problems is presented, including their ecological, social and economic impacts, which provides a basis for formulation of future research needs. The contributions of southern African... -
Pesticides in South African fresh waters
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Ansara-Ross --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa PJ van den Brink --- Department of Aquatic Ecology and Water Quality Management, The Netherlands MJ Ross --- Centre for Aquatic Research, Department of Zoology, South AfricaPublic concern has recently escalated over pesticide contamination of South African aquatic ecosystems. This review of published literature on the occurrence of pesticides within South African freshwater systems indicates that fewer than 50 studies of selected pesticides have been undertaken,... -
Recovery dynamics of zooplankton following mouth-breaching in the temporarily open/closed Mdloti Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Deale --- School of Life Sciences, South Africa R Perissinotto --- School of Life Sciences, South Africa NK Carrasco --- School of Life Sciences, South AfricaMouth-breaching events have major impacts on biological processes in temporarily open/closed estuaries. The aim of this investigation was to monitor zooplankton recovery dynamics following artificial breaching of the Mdloti Estuary in February 2004. Spatial and temporal patterns in zooplankton distribution... -
Relationship between water temperature predictability and aquatic macroinvertebrate assemblages in two South African streams
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: BR Eady --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South Africa NA Rivers-Moore --- Centre for Water Resources Research, South Africa TR Hill --- Discipline of Geography, School of Agricultural, Earth and Environmental Sciences, South AfricaVariable seasonal stream temperatures are a critical factor in maintaining aquatic invertebrate community patterns. We investigated whether the degree of predictability in a stream's water temperature profile provides insights into the structure and functional predictability of macroinvertebrate communities. Quarterly macroinvertebrate... -
Simulations of fishing effects on the southern Benguela fish community using an individual-based model: learning from a comparison with ECOSIM
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: Y-J. Shin L. J. Shannon P. M. CuryBy applying an individual-based model (OSMOSE) to the southern Benguela ecosystem, a multispecies analysis is proposed, complementary to that provided by the application of ECOPATH/ECOSIM models. To reconstruct marine foodwebs, OSMOSE is based on the hypothesis that predation is a... -
New perspectives in small-scale fisheries management: challenges and prospects for implementation in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Sowman --- Environmental Evaluation Unit, South AfricaWorldwide, the past 15–20 years has seen a significant shift in thinking and approaches to the management of small-scale fisheries. This is in response to the recognition that conventional fisheries management is not equipped to deal with the complexities, uncertainties... -
Reviewing evidence of marine ecosystem change off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C L Moloney --- Department of Biological Sciences, South Africa S T Fennessy --- Oceanographic Research Institute, South Africa M J Gibbons --- Department of Biodiversity and Conservation Biology, South Africa A Roychoudhury --- Department of Earth Sciences, South Africa F A Shillington --- Marine Research Institute, South Africa B P von der Heyden --- Department of Earth Sciences, South Africa K Watermeyer --- Department of Biological Sciences, South AfricaRecent changes have been observed in South African marine ecosystems. The main pressures on these ecosystems are fishing, climate change, pollution, ocean acidification and mining. The best long-term datasets are for trends in fishing pressures but there are many gaps,... -
Relations Key to Innovations – Peasants, Institutions and Technical Change on the Mossi Plateau in Burkina Faso
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mats Hårsmar --- , SwedenHow can technical changes within food crop cultivation in a country like Burkina Faso be explained? This is an important question for the reduction of poverty, for enhanced food security as well as for economic growth. Poor countries, where agriculture... -
Towards a Technology Policy for Renewable Energy Development in Africa: A Systems of Innovation Perspective
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ogundiran Soumonni --- Wits Business School, South AfricaThe objective of this paper is to use the systems of innovation (SI) perspective to describe how African countries might increase their rates of access to electricity, and by extension their capacity for broad-based industrialization, through renewable energy. The paper... -
The economic value of Acacia karroo in small-scale farming systems and game farming in northern KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: T.S. Mkhabela --- Isithebe Agricultural and Rural Research Consultancy,The purpose of the investigation was to examine current knowledge, by local people, of the agroforestry roles and the economic importance that the Acacia karroo tree plays in the farming systems or small-scale farmers and game farming in the Dundee... -
Data-protection standards and confidentiality of HIV/AIDS status in the workplace — a South African case study
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Zuzanna Muskat-GorskaThe article contextualises an emerging new regime for information privacy in South Africa (i.e. the draft Protection of Personal Information Bill). Subsequently, it discusses the possibility of successful implementation of international data-protection standards in an environment where there is an... -
Macroinvertebrate colonisation of artificial substrates in a Nigerian river I: gravel and leaf litter
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JO Olomukoro U OkologumeBenthic macroinvertebrate colonisation of artificial gravel and leaf litter substrates over periods of four to 40 days was examined in the Ogba River, Benin City, Nigeria. Of all the assemblages of organisms identified (398 individuals, 27 taxa) on different substrates,... -
Renewable energy: the potential opportunities and obligations of plantation forestry
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: B Talbot PA AckermanGlobal demand for woody biomass in substituting fossil fuels does, and will increasingly, place significant pressure on timber plantations and question conventional management practices. Plantations are rationally laid out, located in areas of high productivity, typically have good infrastructure, and... -
Needleless Intravascular Access
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: A Milner --- Department of Anaesthesia, South AfricaHealthcare workers (HCWs) are at risk for needlestick injuries (NSIs), and in the modern context infections acquired in this manner may have life-threatening sequelae. -
Comprehensive approach to HIV/AIDS services: the way to go in resource-limited settings
Item type: Journal Article • Journal: South African Family Practice • Authors: A Adefolalu --- Department of Family Medicine, South AfricaThe response to the HIV/AIDS epidemic by the various health systems in sub-Saharan Africa, that has the highest prevalence of the disease, has been quite significant in recent years. Millions of people are now benefiting from the services rendered for... -
Promoting technology adoption in the small-scale oil palm fruit processing sector in south-western Nigeria: an innovation systems approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olawale O. Adejuwon --- African Institute for Science Policy and Innovation, Obafemi Awolowo University, Nigeria Kehinde A. Taiwo --- Department of Food Science and Technology, Nigeria Matthew O. Ilori --- African Institute for Science Policy and Innovation, Obafemi Awolowo University, NigeriaTechnologies have been developed for various unit operations in small-scale oil palm fruit processing in Nigeria. However, a majority of small-scale processors in the country still adopt traditional techniques, with a few adopting processing technologies for a particular stage in... -
Changes in the trophic structure, abundance and species diversity of exploited fish assemblages in the artisanal fisheries of the northern coast, Senegal, West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Ndour --- Institut Sénégalais de Recherches Agricoles [ISRA]/Centre de Recherche Océanographique de Dakar-Thiaroye [CRODT], Sénégal F Le Loc'h --- Institut de Recherche pour le Développement [IRD], Laboratoire des sciences de l'Environnement Marin [UMR 6539 LEMAR] (Centre national de la recherche scientifique [CNRS], France J Kantoussan --- Université Gaston Berger [UGB], Sénégal M Thiaw --- Institut Sénégalais de Recherches Agricoles [ISRA]/Centre de Recherche Océanographique de Dakar-Thiaroye [CRODT], Sénégal HD Diadhiou --- Institut Sénégalais de Recherches Agricoles [ISRA]/Centre de Recherche Océanographique de Dakar-Thiaroye [CRODT], Sénégal JM Ecoutin --- Institut de Recherche pour le Développement [IRD], Sénégal L Tito de Morais --- Institut de Recherche pour le Développement [IRD], Laboratoire des sciences de l'Environnement Marin [UMR 6539 LEMAR] (Centre national de la recherche scientifique [CNRS], France OT Thiaw --- L'Institut Universitaire de Pêche et d'Aquaculture [IUPA], SénégalThis work investigates the effects of changes in both fishing pressure and the environment on the trophic dynamics, abundance and diversity of species in the artisanal commercial fisheries off the northern coast of Senegal. Using artisanal commercial fishing data (provided... -
Innovation, the informal economy and development: The case of Zambia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ephraim Daka --- Innovation and Knowledge Economy, Finland Hannes Toivanen --- Innovation and Industrial Renewal, FinlandNational systems of innovation have been serving as the conceptual framework and vehicle to address poverty and national competitiveness in developing countries. Zambia has been building its NSI since 1964, but the existing system suffers from serious shortcomings related to... -
The rise of the BRICS and resource nationalism: challenge and opportunity for Africa's innovation systems
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Michael Kahn --- Centre for Research on Evaluation, Science and Technology, South AfricaA new ‘scramble for Africa’ is presently underway. Unlike that of the late 19th century, this second scramble does not rely upon the capture of assets through extra-territorial force. This time around the capture is not overtly violent, being advanced... -
Inclusive innovation processes – experiences from Uganda and Tanzania
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Lena Trojer --- Department of Technology and Aesthetics, Sweden Birgitta Rydhagen --- Department of Technology and Aesthetics, Sweden Tomas Kjellqvistt --- Department of Technology and Aesthetics, SwedenIt has been well known since the 1960s that developing countries need to improve their capacity to use science and technology and that more efforts must be put into R&D that would benefit poor countries and people. Serious efforts to... -
Integral approach to South African psychology with special reference to indigenous knowledge
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen D Edwards --- Psychology Department, South AfricaIn order to redress imbalances in South African psychological service provision, honor indigenous, transpersonal, community based perspectives, and introduce fresh insights and direction, this article presents an integral approach to psychology in South Africa. Areas highlighted for future research and... -
Decline of Terebralia palustris in South African mangroves
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JL Raw --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa RH Taylor --- School of Hydrology, South Africa NAF Miranda --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa N Peer --- DST/NRF Research Chair in Shallow Water Ecosystems, South AfricaTerebralia palustris (Linnaeus, 1767), the giant mangrove whelk, is a prominent component of mangrove ecosystem malacofauna in the Indo-West-Pacific region. On the east coast of Africa, the range of T. palustris extends from Kenya to the south-eastern region of South... -
Topological systems versus attachment relations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Cosimo Guido --- Department of Mathematics “Ennio De Giorgi”, Italy Sergey A. Solovyov --- Department of Mathematics and Statistics, Faculty of Science, Czech RepublicThe manuscript makes a category-theoretic comparison between the concepts of topological system of S. Vickers and attachment relation of C. Guido. With the help of the recent definition of the notions in the framework of an arbitrary variety of algebras,... -
An innovative drought early warning system for sub-Saharan Africa: integrating modern and indigenous approaches
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Muthoni Masinde --- Department of Information Technology, South AfricaDroughts remain the number one disaster in Africa; drought is responsible for over 88% of all the types of disasters that people are affected by. An effective drought early warning system can support appropriate mitigation and preparedness strategies and hence... -
Efficiency of Mexico's regional innovation systems: an evaluation applying data envelopment analysis (DEA)
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Cuitláhuac Valdez Lafarga --- Student in Doctoral Programme, Mexico Jorge Inés León Balderrama --- Regional Development Department, MexicoThe aim of this study is to measure the relative technical efficiency of Mexico´s regional innovation systems, as defined by its 32 states. Furthermore, there is an interest to establish the relationship between the amount of resources for each regional... -
Indigenous knowledge systems – a rich appropriate technology resource
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: John Tharakan --- Department of Chemical Engineering, United States of AmericaIndigenous knowledge systems (IKS) comprise knowledge systems that have developed within various societies’ independent of, and prior to, the advent of the modern scientific knowledge system. IKS from various cultures evolved into broad and comprehensive knowledge systems, such as those... -
High population connectivity and Pleistocene range expansion in the direct-developing plough shell Bullia rhodostoma along the South African coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Muteveri --- Evolutionary Genomics Group, Department of Botany and Zoology, South Africa CA Matthee --- Evolutionary Genomics Group, Department of Botany and Zoology, South Africa RCK Bowie --- Museum of Vertebrate Zoology and Department of Integrative Biology, USA S von der Heyden --- Evolutionary Genomics Group, Department of Botany and Zoology, South AfricaPleistocene climatic and oceanographic changes have influenced the distribution of marine biodiversity in southern Africa. Most evidence, however, has been derived from rocky shore or demersal taxa; data on sandy shore species are limited, despite severe threats to many sandy... -
Financial Information Systems: Teaching REA semantics within an Information Engineering framework
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: J. Callaghan --- Professor of Accounting, School of Business Administration, United States of America A. Savage --- Assistant Professor of Accounting, School of Business Administration, United States of America E. Peacock --- Professor of Accounting, School of Business Administration, United States of AmericaThe purpose of this paper is to describe how the accounting REA model can be incorporated into the Information Engineering set of methodologies in the Accounting or Financial Information Systems classroom. We contrast the traditional Information Engineering approach with one... -
Computer-based Message System Flows in Large Organisations
Item type: Journal Article • Journal: De Ratione • Authors: B R Lower --- University of Cape Town, S Erlank --- University of Cape Town, P M Q Lay --- University of Cape Town,The structure of a typical organization can be described in terms of hierarchies and work groups, linked by blows of control and information. Communication between and within these work groups takes place in formal and informal ways, using a variety... -
Planning to recover from the loss of computer facilities
Trends in South Africa over the last five years Item type: Journal Article • Journal: De Ratione • Authors: J. Miller --- Graduate School of Business, M. A. Wenham --- Graduate School of Business,A national survey of computer disaster recovery planning by major computer users in South Africa was conducted in 1990. The results are reported in this article and show that most firms are highly dependent on their computer systems. Almost a... -
Participation schemes in the South African Mining Industry: The impact of managerial accounting, communication and control systems
Item type: Journal Article • Journal: De Ratione • Authors: Jeremy Lord --- Department of Accounting at the University of Natal,The relationships between employees’ job satisfaction and their perceived extent of participation in profits, and budget-setting and other job-related decision-making, were examined in a profitable South African mining company. Using the statistical technique of Moderated Multiple Regression, it was established... -
Southern African pasture and forage science entering the 21st century: past to present
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Wayne F Truter --- Department of Plant Production and Soil Science, South Africa Philip R Botha --- Directorate Plant Sciences, Western Cape Department of Agriculture, South Africa Chris S Dannhauser --- Grass SA, Waverley, South Africa Barbara V Maasdorp --- Department of Crop Science, Zimbabwe Neil Miles --- South African Sugarcane Research Institute, South Africa Albert Smith --- Stats4science, South Africa Hennie A Snyman --- Department of Animal, Wildlife and Grassland Sciences, South Africa Neil M Tainton --- Amber Valley, South AfricaGiven the global challenges of mitigating and alleviating land degradation and ensuring food security, particularly through protein production, pasture and forage science together with rangeland science will remain imperative to sustainable livestock production systems. Recognising the scientific principles developed in... -
The role of community health workers in the re-engineering of primary health care in rural Eastern Cape
Item type: Journal Article • Journal: South African Family Practice • Authors: Karl le Roux --- Zithulele Hospital, South Africa Ingrid M le Roux --- Philani Maternal, South Africa Nokwanele Mbewu --- Philani Maternal, South Africa Emily Davis --- Semel Institute and the Department of Psychiatry, USABackground: Primary Health Care in South Africa is being re-engineered to create a model of integrated care across different levels of the health care system. From hospitals to clinics, in the community and in the home, health care will focus... -
Perceptions Among Professional Accounting Students of Self, Job Attractiveness and Academic Reputation
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E Papageorgiou --- School of Accountancy, C Callaghan --- School of Economic and Business Sciences, D Coldwell --- School of Economic and Business Sciences, T Joosub --- School of Accountancy,Discussions around career pathways have gained momentum in the field of career development to assist young people in mapping out their career choices in order to achieve meaningful and productive futures. The purpose of the study was to empirically investigate... -
Anthropologies of knowledge and South Africa's Indigenous Knowledge Systems Policy
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Lesley Green --- Dept of Social Anthropology,Following a visit to the South African Medical Research Council's Indigenous Knowledge Systems Laboratory at Delft, Cape Town, this paper explores the possibilities for anthropological responses to South Africa's Indigenous Knowledge Systems Policy of 2004. While the Policy is admirable... -
The population dynamics of the estuarine isopod Exosphaeroma hylocoetes (Barnard, 1940) within three temporarily open/closed southern African estuaries
Item type: Journal Article • Journal: African Zoology • Authors: T.O. Henninger [AN0001] P.W Froneman --- Department of Zoology and Entomology, South Africa A.N. Hodgson --- Department of Zoology and Entomology, South AfricaThe population dynamics of the estuarine isopod, Exosphaeroma hylocoetes, was investigated monthly from February 2006 to August 2007 in three temporarily open/closed Eastern Cape estuaries, the East and West Kleinemonde and Kasouga Estuaries. Mean isopod abundances and biomasses ranged between... -
Integration of non-communicable chronic diseases (NCDs) and HIV/AIDS and mental health care through the involvement of chronically ill patients using empowerment evaluation
Item type: Journal Article • Journal: South African Family Practice • Authors: Claire van Deventer --- Department of Family Medicine and Rural Health, South AfricaBackground: The emphasis in health care in South Africa is gradually shifting to acknowledge the different roles patients have regarding their own care. There is, however, very little evidence of this practice and of related practical outcomes. -
Post-fire vegetative recruitment of the alien grass Glyceria maxima at a KwaZulu-Natal Midlands dam, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: LF Mugwedi --- School of Animal, Plant and Environmental Sciences, South Africa JM Goodall --- School of Animal, Plant and Environmental Sciences, South Africa ETF Witkowski --- School of Animal, Plant and Environmental Sciences, South Africa MJ Byrne --- Centre of Excellence for Invasion Biology, South AfricaAn accidental fire at a site where the reproductive behaviour of Glyceria maxima was being investigated provided an opportunity to measure its effect on G. maxima vegetative recruitment. The fire burned G. maxima growing along the water's edge and down... -
The factors affecting functionality and sustainability of mechanized elements of water supply systems in Mbeere South Sub-County, Kenya
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Job Kitetu --- Masinde Muliro University of Science and Technology, Kenya Kinyua Ngige --- Clean Air Energy Solutions, KenyaThis paper focuses on the functionality and sustainability of mechanized elements of water supply systems. Despite the huge sums of money spent by development agencies in developing water supply systems, once the projects are handed over to communities they start... -
Integrating indigenous knowledge into appropriate technology development and implementation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: John Tharakan --- Department of Chemical Engineering, USAAppropriate Technology (AT) implementation should foster community empowerment and sustainability. Successful implementation requires community engagement throughout - technology conceptualization, development, implementation, assessment and impact evaluation. Development professionals should be sensitive to socio-cultural context and respect local knowledge, part of the... -
Innovation policies in the Mediterranean area: Towards a Mediterranean system of innovation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Massimiliano Ferrara --- Department of Law and Economics, Italy Roberto Mavilia --- CRIOS, Bocconi University, ItalyThe contribution of this paper has both theoretical and policy relevance. It is one of the first exploratory studies of the Mediterranean system of innovation built on the concept of innovation systems. The paper provides a brief literature review and... -
Studying the Logone floodplain, Cameroon, as a coupled human and natural system
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Moritz --- Department of Anthropology, USA S Laborde --- Department of Anthropology, USA SC Phang --- Department of Evolution, Ecology, and Organismal Biology, USA M Ahmadou --- University of Maroua, Cameroon M Durand --- Byrd Polar Research Center, USA A Fernandez --- Byrd Polar Research Center, USA IM Hamilton --- Department of Evolution, Ecology, and Organismal Biology, USA S Kari --- Centre d'Appui a la Recherche et au Pastoralisme (CARPA), Cameroon B Mark --- Byrd Polar Research Center, USA P Scholte --- Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), Cameroon N Xiao --- Department of Geography, USA R Ziebe --- University of Maroua, CameroonAfrican floodplains are an excellent example of coupled human–natural systems because they exhibit strong interactions among multiple social, ecological, and hydrological systems. The intra-annual and interannual variations in seasonal flooding have direct and indirect impacts on ecosystems and human lives... -
Multiple cardiovascular disease risk factors in rural Kenya: evidence from a health and demographic surveillance system using the WHO STEP-wise approach to chronic disease risk factor surveillance
Item type: Journal Article • Journal: South African Family Practice • Authors: PM Chege --- Department of Family Medicine, KenyaBackground: To describe the distribution of obesity, hypertension, dysglycaemia and dyslipidaemia (which are risk factors for cardiovascular disease) using a Health and Demographic Surveillance System (HDSS) site in western Kenya. -
Symmetric Intersections of Rauzy Fractals
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Tarek Sellami --- , , Tunisia Víctor F. Sirvent --- , , VenezuelaIn this article we study symmetric subsets of Rauzy fractals of unimodular irreducible Pisot substitutions. The symmetry considered is reflection through the origin. Given an unimodular irreducible Pisot substitution, we consider the intersection of its Rauzy fractal with the Rauzy... -
Development of a Malian food exchange system based on local foods and dishes for the assessment of nutrient and food intake in type 2 diabetic subjects
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: A. Coulibaly --- Département des sciences des aliments et de nutrition, Faculté des sciences de l’agriculture et de l’alimentation, Canada Ht O’Brien --- Département des sciences des aliments et de nutrition, Faculté des sciences de l’agriculture et de l’alimentation, Canada I. Galibois --- Département des sciences des aliments et de nutrition, Faculté des sciences de l’agriculture et de l’alimentation, CanadaObjective: To develop exchange lists for the assessment of food and nutrient intakes for people with diabetes in Mali. -
From enterprise development to inclusive innovation – A systemic instruments framework for regional innovation support
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sara S (Saartjie) Grobbelaar --- Department of Industrial Engineering and DST-NRF Centre of Excellence in Scientometrics and Science, South Africa Nigel Gwynne-Evans --- Trade and Sector Development, Western Cape Department of Economic Development and Tourism, South Africa Alan C. Brent --- Department of Industrial Engineering, South AfricaAlthough the role and importance of innovation support in South Africa is a well-recognised concept on the national level, provincial governments have only recently started to debate, investigate and explore instruments through which innovation can be leveraged and supported regionally... -
Habitat selection of the Black-shouldered Kite Elanus caeruleus in agroecosystems of Swaziland
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Katharine A Howard --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA Thomas W Schwertner --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA James P Muir --- Department of Wildlife, Sustainability, and Ecosystem Sciences, USA Ara Monadjem --- All Out Africa Research Unit, Department of Biological Sciences, SwazilandA decline in many African raptor populations may contribute to loss of ecosystem services such as pest control. The Black-shouldered Kite Elanus caeruleus stands out as an exception, experiencing range expansions due to its proclivity for agricultural landscapes. We surveyed... -
A system-level modelling perspective of the KwaZulu-Natal Bight ecosystem, eastern South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: UM Scharler --- School of Life Sciences, South Africa RC van Ballegooyen --- Coastal Systems Research Group, South Africa MJ Ayers --- School of Life Sciences, South AfricaThe KwaZulu-Natal Bight comprises the only sizeable shelf region on the eastern coast of South Africa, and is influenced by both the Agulhas Current on its seaward side and rivers and estuaries on its landward side. Established knowledge of the... -
Efficacy and deficiencies of rapid biomonitoring in biodiversity conservation: a case study in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HM Barber-James --- Department of Freshwater Invertebrates, South Africa LL Pereira-da-Conceicoa --- Department of Zoology and Entomology, South AfricaRapid biomonitoring protocols, using biotic indices based on macroinvertebrate diversity to assess river ecosystem health, are widely used globally. Such quick assessment techniques are lauded for the rapid results obtained and the relatively easy protocol used to achieve an answer... -
Ensuring an optimal environment for peer education in South African schools: Goals, systems, standards and policy options for effective learning
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Sharlene Swartz --- Human Sciences Research Council, South Africa Charles Deutsch --- Harvard Catalyst Population Health Research Program, USA Benita Moolman --- Human Sciences Research Council, South Africa Emma Arogundade --- Human Sciences Research Council, South Africa Dane Isaacs --- Human Sciences Research Council, South Africa Barbara Michel --- Centre for the Support of Peer Education, South AfricaPeer education has long been seen as a key health promotion strategy and an important tool in preventing HIV infection. In South African schools, it is currently one of the strategies employed to do so. Based on both a recent... -
Dynamic Tensions from Management Control Systems and Performance in a Sub-Saharan African Economy: Mediating Effects of Competitive Strategy
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Moses Acquaah --- Department of Management, USA Ahmed Agyapong --- Department of Marketing and Corporate Strategy, GhanaThis study examines how the dynamic tension created as a result of the simultaneous and balanced use of controlling and innovative forces of management control systems indirectly influences firm performance through competitive strategy. Using data from 106 firms from Ghana,... -
Conceptions of agency and constraint for HIV-positive patients and healthcare workers to support long-term engagement with antiretroviral therapy care in Khayelitsha, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Erin Stern --- Division of Social and Behavioural Sciences, School of Public Health and Family Medicine, South Africa Christopher Colvin --- Division of Social and Behavioural Sciences, School of Public Health and Family Medicine, South Africa Nobom Gxabagxaba --- Division of Social and Behavioural Sciences, School of Public Health and Family Medicine, South Africa Charlotte Schutz --- Clinical Infectious Diseases Research Initiative, Institute of Infectious Diseases and Molecular Medicine and Department of Medicine, School of Public Health and Family Medicine, South Africa Rosie Burton --- Southern African Medical Unit, Médecins Sans Frontières, South Africa Graeme Meintjes --- Clinical Infectious Diseases Research Initiative, Institute of Infectious Diseases and Molecular Medicine and Department of Medicine, School of Public Health and Family Medicine, South AfricaIn the context of the optimism around antiretroviral therapy (ART) as prevention of HIV/AIDS, addressing the barriers to long-term ART adherence is critical. This is particularly important given the tendency to individualise or use a blame discourse when exploring why... -
University-driven inclusive innovations in the Western Cape of South Africa: Towards a research framework of innovation regimes
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sara Grobbelaar --- DST-NRF CoE in Scientometrics and Science, Technology and Innovation Policy, South Africa Robert Tijssen --- Centre for Research on Evaluation, Science and Technology (CREST), South Africa Marjolijn Dijksterhuis --- Stellenbosch Business School, South AfricaInclusive innovation refers to the improvement of living conditions and creation of employment opportunities for the poor through the development or co-creation of new products, services, processes and business models aimed at resource poor communities. Based on an empirical study... -
Effect of land use on water quality and phytoplankton community in the tropical Khami River in semi-arid southwest Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: T Dzinomwa --- Department of Environmental Science and Health, Faculty of Applied Science, Zimbabwe HGT Ndagurwa --- Department of Forest Resources and Wildlife Management, Faculty of Applied Science, ZimbabweThe water quality and phytoplankton community assemblage of the Khami River, a tropical river sub catchment in semi-arid southwest Zimbabwe impacted by agriculture and urban land use, were examined in March 2015. Conductivity, sulphates, total dissolved solids and salinity were... -
Operation and maintenance of back-up photovoltaic systems: An analysis based on a field study in Cameroon
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Kodji Deli --- Department of Renewable Energy, Higher Institute of the Sahel, Cameroon Etienne Tchoffo Houdji --- Department of Renewable Energy, Higher Institute of the Sahel, Cameroon Noel Djongyang --- Department of Renewable Energy, Higher Institute of the Sahel, Cameroon Donatien Njomo --- Environmental Energy Technologies Laboratory (EETL), Department of Physics, Faculty of Science, CameroonThis work is an analysis of the data collected from 20 photovoltaic installations all over Cameroon. The objectives are to study the causes of the breakdown of the different installations and propose maintenance strategies to solve them and to evaluate... -
Grazing management that regenerates ecosystem function and grazingland livelihoods
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Richard Teague --- Department of Ecosystem Science and Management, USA Matt Barnes --- Shining Horizons Land Management LLC, USAAdopting a systems view and regenerative philosophy can indicate how to regenerate ecosystem function on commercial-scale agro-ecological landscapes. Adaptive multi-paddock grazing management is an example of an approach for grazinglands. Leading conservation farmers have achieved superior results in ecosystem improvement,... -
What are the long-term effects of high-density, short-duration stocking on the soils and vegetation of mesic grassland in South Africa?
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Sindiso Chamane --- School of Life Sciences, South Africa Kevin P Kirkman --- School of Life Sciences, South Africa Craig Morris --- Agricultural Research Council–Animal Production Institute, South Africa Tim O’Connor --- South African Environmental Observation Network, South AfricaHigh-density, short-duration stocking (HDG) is gaining popularity amongst farmers in the South African mesic grasslands, but little is known about its potential impact on natural resources. Using a fence-line contrast approach, this study compared the long-term effects of HDG with... -
Wasted wines
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Elize Koldenhof --- Alumni International Hospitality Management, The Netherlands Femke Vrenegoor --- International Hospitality and Service Management, The NetherlandsThis paper reports on a management project, a fourth-year research project at Stenden Hotel Management School, dedicated to reducing wine waste at Landgoedhotel de Wilmersberg in De Lutte (the Netherlands). To do this, the beverage cost percentages were explored for... -
Mother- and daughter-in-law relationship within a South African context: Influence of family systems
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tebogo Rosina Nganase --- Department of Psychology, South Africa Wilna Basson --- Department of Psychology, South AfricaThis study explored family system influences on mother-in-law and daughter-in-law relationships in a South African setting. A convenience sample of 20 mothers-in-law (age range from 40 to 86) and 20 daughters-in-law (age range from 20 to 60) were informants. They... -
Metal accumulation in two contiguous eutrophic peri-urban lakes, Chivero and Manyame, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Utete --- Chinhoyi University of Technology, Zimbabwe C Phiri --- Chinhoyi University of Technology, Zimbabwe SS Mlambo --- Chinhoyi University of Technology, Zimbabwe N Maringapasi --- Chinhoyi University of Technology, Zimbabwe N Muboko --- Chinhoyi University of Technology, Zimbabwe TB Fregene --- Department of Aquaculture and Fisheries Management, Nigeria B Kavhu --- University of Zimbabwe, ZimbabweConcentrations of aluminium, cadmium, chromium, cobalt, copper, iron, lead, nickel and zinc were determined in surface water, benthic sediments, and the gills, liver and stomach muscle tissues of Oreochromis niloticus and Clarias gariepinus in peri-urban lakes Chivero and Manyame, Zimbabwe... -
Biometric variations and oxidative stress responses in juvenile Clarias gariepinus exposed to Termex®
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JU Nnadi --- Department of Zoology and Environmental Biology, Nigeria IN Dimelu --- Department of Home Economics and Hospitality Management Education, Nigeria SI Nwani --- Department of Agriculture Education, Nigeria JC Madu --- Department of Zoology and Environmental Biology, Nigeria CI Atama --- Department of Zoology and Environmental Biology, Nigeria GN Attamah --- Department of Zoology and Environmental Biology, Nigeria JI Okwor --- Department of Zoology and Environmental Biology, Nigeria CD Nwani --- Department of Zoology and Environmental Biology, NigeriaThe current study investigated the effects of termite insecticide, Termex® (imidacloprid 35.50% SC), on biometric variations and oxidative stress biomarkers in Clarias gariepinus. Fish were exposed to 4.00 and 6.00 µg l–1 sublethal Termex® concentrations in 2017. The gill and... -
Derivation of scenario-specific water quality guidelines for acid mine drainage in South Africa, using a risk-based approach
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: EC Vellemu --- Unilever Centre for Environmental Water Quality, South Africa PK Mensah --- Unilever Centre for Environmental Water Quality, South Africa N Griffin --- Unilever Centre for Environmental Water Quality, South Africa ON Odume --- Unilever Centre for Environmental Water Quality, South AfricaAcid mine drainage (AMD) continues to threaten water quality in many mining regions globally. Data paucity renders it challenging to inform appropriate water quality management strategies for a succinct scientific understanding of the effects of AMD on freshwater ecosystems. The... -
A novel system dynamics’ model for the motors of a sectoral innovation system–simulating and policymaking
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sayyed Mohsen Azad --- Department of Industrial Engineering, Iran Seyed Hassan Ghodsypour --- Department of Industrial Engineering, IranIn recent years, science and technology policymaking has been taken into consideration by many researchers. One of the most important fields of this policymaking is innovation systems’ management; which is divided into national, regional, sectoral and technological innovation systems. In... -
“Ons is die stam van die gemeenskap”: rethinking old age and vitality in Nuwerus, Western Cape
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Michellé Pasquallie --- Department of Anthropology and Sociology, South AfricaIn this paper, I argue against contemporary South African representations of the elderly as people at the fringes of society, as frail, withdrawn from social activity or “invisible.” Drawing on ethnographic fieldwork carried out in Nuwerus, in the Matzikama Local... -
Effect of drift sampler exposure time and net mesh size on invertebrate drift density in the Njoro River, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PW Mureithi --- Department of Biological Sciences, Kenya JG Mbaka --- Department of Land and Water Management, Kenya CM M’Erimba --- Department of Biological Sciences, Kenya JM Mathooko --- Department of Biological Sciences, KenyaAlthough invertebrate drift is an important ecological process in lotic ecosystems, very little is known about it in Kenyan rivers. The primary aim of this study was to investigate the effect of driftnet mesh size and exposure duration on drift... -
Soil taxonomy proposals for acid sulfate soils and subaqueous soils raised by the 8th International Acid Sulfate Soils Conference
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Barret M Wessel --- Department of Environmental Science and Technology, USA John M Galbraith --- Department of Crop and Soil Environmental Sciences, USA Mark H Stolt --- Department of Natural Resources Science, USA Martin C Rabenhorst --- Department of Environmental Science and Technology, USA Delvin S Fanning --- Department of Environmental Science and Technology, USA Maxine J Levin --- USDA-Natural Resources Conservation Service, USAThe 8th International Acid Sulfate Soils Conference presented examples and discussions for classification of ‘acid sulfate soils’ and related issues for ‘subaqueous soils’. When these soils are disturbed or exposed, the sulfides (predominantly pyrite) react with oxygen to produce sulfuric... -
A review of conservation agriculture research in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Corrie M Swanepoel --- Agricultural Research Council–Institute for Soil, South Africa Lourens H Swanepoel --- Department of Zoology, South Africa Hendrik J Smith --- Grain SA, South AfricaConservation agriculture (CA) is advocated as a sustainable farming method to improve soil health, increase crop yields and food security, while reducing input costs. In South Africa, a country with low rainfall, limited agricultural lands and a large smallholder farming... -
Analysing the diffusion and adoption of renewable energy technologies in Africa: The functions of innovation systems perspective
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Aschalew Demeke Tigabu --- African Centre for Technology Studies (ACTS), KenyaRenewable energy technologies have increasingly been promoted to address energy poverty and environmental sustainability challenges in Africa. Yet, their diffusion and uptake remain marginal. The focus of renewable energy technology diffusion research in Africa has largely been on identifying technological,... -
Building low-carbon energy innovation systems in Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Radhika Perrot --- Independent researcher, South Africa Maruf Sanni --- National Centre for Technology Management, NigeriaThe objective of this special issue is to bring together research on low-carbon innovation in the African context. The aim is to assess and compare various cases of low-carbon energy development in Africa in an effort to understand the underlying... -
A model for addressing parallelism of systems in the management of data: The Namibian case
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Irja Shaanika --- Department of Information Technology, South Africa Monica Maletzky --- Department of Information Technology, South Africa Tiko Iyamu --- Department of Information Technology, South AfricaAs in many countries, the volume of data that has been generated by the Namibian government administrations and agencies in recent years has increased drastically in rapidity. Consequently, this has led to difficulties and challenges in the control and management... -
Systemic policy instruments for inclusive innovation systems: Case study of a maternal mHealth project in South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Edward van der Merwe --- Centre for Research on Evaluation, South Africa Sara S (Saartjie) Grobbelaar --- Department of Industrial Engineering, South AfricaInnovation for inclusive development refers to the development of products and services for and/or by marginalized communities with the aim of improved economic and social welfare. Innovation systems present a framework for analyzing actors, institutions, interlinkages and societal subsystems that... -
An automated framework for business enterprise performance evaluation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. O. Anyaeche --- Department of Industrial and Production Engineering, Nigeria D. E. Ighravwe --- Department of Mechanical Engineering, NigeriaThe evaluation of the performance of business enterprises has continued to pose challenges to business managers. Many approaches have been developed to address this problem, but most have been either input or output oriented, while some focus on specific tasks... -
Drivers and trajectories of social and ecological change in the Karoo, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Cherryl Walker --- Department of Sociology and Social Anthropology, South Africa Suzanne J Milton --- Wolwekraal Conservation and Research Organisation, South Africa Tim G O’Connor --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa Judy M Maguire --- unaffiliated, South Africa W Richard J Dean --- Wolwekraal Conservation and Research Organisation, South AfricaThis review article explores past, present and possible future drivers of change in Karoo social-ecological systems. Biogeographically, the Karoo comprises the arid Succulent Karoo and Nama-Karoo biomes covering significant portions of the Northern Cape, Eastern Cape and Western Cape provinces... -
Introduction to the Karoo Special Issue: Trajectories of Change in the Anthropocene
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Joh R Henschel --- South African Environmental Observation Network (SAEON): Arid Lands Node, South Africa M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa Cherryl Walker --- Department of Sociology and Social Anthropology, South AfricaThe Karoo is an arid to semi-arid area across the western third of South Africa, comprising the Succulent Karoo and Nama-Karoo biomes. Its environment and people have experienced considerable changes, and now face new challenges as the Anthropocene unfolds. This... -
Reflections on the Karoo Special Issue: towards an interdisciplinary research agenda for South Africa’s drylands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M Timm Hoffman --- Plant Conservation Unit, Department of Biological Sciences, South Africa Cherryl Walker --- Department of Sociology and Social Anthropology, South Africa Joh R Henschel --- South African Environmental Observation Network (SAEON): Arid Lands Node, South AfricaWe begin this essay with reflections on major research themes highlighted by the Karoo Special Issue (KSI). These include concerns over land-use change, long-term monitoring, climate change, governance and the need for more interdisciplinary research. We also identify some of... -
Weed species composition and density under conservation agriculture with varying fertiliser rate
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Conrad Baker --- Agricultural Research Council–Institute for Soil, Climate and Water, South Africa Ignacio C Madakadze --- Department of Plant Production and Soil Science, South Africa Corrie M Swanepoel --- Agricultural Research Council–Institute for Soil, Climate and Water, South Africa Zira Mavunganidze --- Department of Plant Production and Soil Science, South AfricaConservation agriculture (CA) is a sustainable management system that optimises yield while reducing input costs. However, reduction in tillage intensity and frequency as practised under CA generally alters weed densities and composition. The objective of the study was to evaluate... -
Nutrient status of sandy soils in smallholder areas of Zimbabwe and the need to develop site-specific fertiliser recommendations for sustainable crop intensification
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Gabriel Soropa --- Department of Environmental Sciences and Technology, Zimbabwe Justice Nyamangara --- Department of Environmental Sciences and Technology, Zimbabwe Ermson Z Nyakatawa --- Department of Crop Science and Post Harvest Technology, ZimbabweSustainable crop intensification in sub-Saharan Africa cannot be achieved if farmers cultivate inherently infertile soils that are deficient in key essential nutrients, such as nitrogen and phosphorus. Most smallholder farmers in sub-Saharan Africa are resource-constrained and apply suboptimal fertiliser amounts,... -
Megabenthos and benthopelagic fishes on Southeast Atlantic seamounts
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: OA Bergstad --- Institute of Marine Research (IMR), Norway M Gil --- Departamento de Ecología y Biología Animal, Edificio de Ciencias Experimentales, Spain ÅS Høines --- Institute of Marine Research (IMR), Norway R Sarralde --- Instituto Espanol de Oceanografia, Centro Oceanografico de Canarias, Spain E Maletzky --- Ministry of Fisheries and Marine Resources, Namibia E Mostarda --- Food and Agriculture Organization of the United Nations (FAO), Italy L Singh --- Branch: Fisheries Management, Department of Agriculture, Forestry and Fisheries (DAFF), South Africa MA António --- Secretary of State of Affairs, Ministry of Agriculture, Rural Development and Fisheries, Angola F Ramil --- Departamento de Ecología y Biología Animal, Edificio de Ciencias Experimentales, Spain P Clerkin --- Pacific Shark Research Center (PSRC), Moss Landing Marine Laboratories, United States G Campanis --- South East Atlantic Fisheries Organisation (SEAFO) Secretariat, NamibiaIn a descriptive study of megafauna of several Southeast Atlantic seamounts, multiple video-transects on upper slopes and summits documented the occurrence of benthic invertebrate taxa, primarily corals, regarded as indicators of vulnerable marine ecosystems (VMEs) as defined in international guidelines... -
Technology adoption typology and rice yield differentials in Ghana: Principal component analysis approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Franklin Nantui Mabe --- Department of Agricultural and Resource Economics, Faculty of Agribusiness and Communication Sciences, Ghana Samuel Arkoh Donkoh --- Department of Agricultural and Resource Economics, Faculty of Agribusiness and Communication Sciences, Ghana Seidu Al-Hassan --- Central Administration, GhanaThis study used primary data obtained from rice farmers in Guinea Savannah Zone (GSZ), Forest Savannah Transition Zone (FSTZ) and Coastal Savannah Zone (CSZ). Principal component analysis (PCA) was used to classify farmers into technology adopters. The study used Welch’s... -
A review of the influence of municipal sustainable supply chain management on South Africa’s recycling performance
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Fannie Machete --- College of Agriculture and Environmental Sciences, South AfricaThis paper reviews the influence of municipal sustainable chain management on South Africa’s recycling performance. In this study, municipal supply chain management systems are identified as one of the major factors that influence the lack of municipal solid waste services... -
Future prospects and challenges of intensifying dairy production systems in Ethiopia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Habtamu Didanna --- Wolaita Sodo University, Ethiopia Ashenafi Wossen --- Addis Ababa University, Ethiopia Berhanu Shano --- Wolaita Sodo University, EthiopiaA number of market-oriented smallholder dairy farms have appeared mainly in the urban and peri-urban areas of Ethiopia. Dairy intensification provides both opportunities and challenges that need to be managed accordingly in order to improve milk production in a sustainable... -
An effective learning culture: Using high performance work systems to strengthen the relationship between communities of practice and knowledge creation in Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Florence Nansubuga --- School of Psychology, Makerere University, Uganda John C Munene --- School of Psychology, Makerere University, Uganda Julius Kikooma --- School of Psychology, Makerere University, Uganda Joyce Nansamba --- School of Psychology, Makerere University, Uganda Khamis Musanje --- School of Psychology, Makerere University, UgandaThis paper sought to demonstrate how communities of practice can coalesce with high performance work systems to develop an Africanized learning culture that promotes interaction among employees and empowers them to create innovative knowledge for competitive performance. A total of... -
The relevance of the content of an HIV and AIDS social intervention programme for the youth in the Northern Cape, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: André R Le Tape --- Department of Social Work and Criminology, South Africa Lourens S Geyer --- Department of Social Work and Criminology, South Africa Charlene L Carbonatto --- Department of Social Work and Criminology, South AfricaThe numbers of people infected with HIV and living with AIDS remain high in South Africa. The youth of the Northern Cape province in South Africa are a vulnerable population in this regard. However, there seems to be a dearth... -
Assessment of persistent organochlorine compounds contamination on the Lake Victoria water and sediments: a case study in Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Wenaty --- Department of Food Technology, Nutrition and Consumer Sciences, Tanzania F Mabiki --- Department of Chemistry and Physics, Tanzania B Chove --- Department of Food Technology, Nutrition and Consumer Sciences, Tanzania R Mdegela --- Department of Veterinary Medicine and Public Health, TanzaniaThe current study was conducted to establish the levels of organochlorine pesticides (OCPs), its degradation products, and indicatory polychlorinated biphenyls (PCBs) in water and sediments from Lake Victoria in Tanzania. Seven indicator PCBs were identified in sediments, and five were... -
Changes in decomposition rate and litterfall in riparian zones with different basal area of exotic Eucalyptus in south-eastern Brazil
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Glaucia Regina Santos --- Department of Forest Science, Brazil Marina Shinkai Gentil Otto --- Department of Forest Science, Brazil José Raimundo de Souza Passos --- Department of Biostatistics, Brazil Felipe Ferreira Onofre --- Department of Forest Science, Brazil Valdemir Antônio Rodrigues --- Department of Forest Science, Brazil Felipe Rossetti de Paula --- Department of Forest Science, Brazil Silvio Frosini de Barros Ferraz --- Department of Forest Science, BrazilExotic species in riparian environments can influence the quantity and quality of litterfall in the ecological system. The objective of this study was to evaluate the influence of Eucalyptus leaves on litterfall and terrestrial and aquatic leaf decomposition in a... -
Which delivery model innovations can support sustainable HIV treatment?
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Caroline A Bulstra --- Erasmus Medical Centre, Department of Public Health, The Netherlands Jan AC Hontelez --- Erasmus Medical Centre, Department of Public Health, The Netherlands Osondu Ogbuoji --- Center for Policy Impact in Global Health, USA Till Bärnighausen --- Institute of Global Health, University of Heidelberg, GermanyThe rapid scale-up of antiretroviral treatment (ART) for HIV since the mid-2000s, mostly through disease-specific or “vertical” programmes, has been a highly successful undertaking, which averted millions of deaths and prevented many new infections. However, the dynamics of the HIV... -
“Reproducing the social”: contradictory interconnections between land, cattle production and household relations in the Besters Land Reform Project, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Donna Hornby --- Institute for Poverty, Land and Agrarian Studies, South Africa Ben Cousins --- Institute for Poverty, Land and Agrarian Studies, South AfricaLand redistribution policy in South Africa emphasises commercial farming as the legitimate use of land. This production-oriented framework fails to take into account the intertwined but unstable relationship between the production of market value and social reproduction, and how this... -
Water quality assessment using benthic macroinvertebrates as bioindicators in streams and rivers around Sebeta, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Mezgebu --- Department of Fisheries and Aquatic Sciences, Ethiopia A Lakew --- National Fisheries and Aquatic Life Research centre, Ethiopia B Lemma --- Department of Zoological Sciences, EthiopiaThe increasing impact of human activities on the freshwater-bodies of Ethiopia requires an efficient and cost-effective method for ecological health assessment. In the current study, benthic macroinvertebrates were used to assess the impact of different stressors originating from industries and... -
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... -
Drought amnesia: lessons from protected areas in the eastern Lowveld of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Mike JS Peel --- , South Africa Izak P Smit --- , South AfricaProtected areas (PAs) adjacent to the Kruger National Park (KNP) are divided into fenced and unfenced properties. We discuss land-use development to provide context of how these savannas have evolved over the past century. Although the PAs have embraced the... -
The primacy of innovation capacities in the NIS of the Maghreb countries: An analysis in terms of learning capacity in Morocco, Tunisia and Algeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Vanessa Casadella --- Department of Economics, France Rédha Younes Bouacida --- Faculty of Economics, Business and Management Sciences, Department of Economic Sciences, AlgeriaThe building of innovative capacities has become essential in the objectives of development and economic growth. While there has been a lot of literature on the construction and analysis of innovation systems in the Maghreb economies, it is less common... -
Reflections and refractions on Sakai/Moodle learning management system in developing countries: A case of Ghanaian universities’ demand and supply perspective analyses
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Moses Kumi Asamoah --- Department of Theology and Education, Central University, GhanaTechnological advancement has revolutionized teaching and learning in the twenty-first century. However, the full benefits are yet to be realized and clearly understood due to user experience data paucity, especially in developing countries. This study delves into the issue from... -
Plant-parasitic nematode assemblages associated with glyphosate tolerant and conventional soybean cultivars in South Africa
Item type: Journal Article • Journal: African Zoology • Authors: A Mbatyoti --- Unit for Environmental Sciences and Management, South Africa MS Daneel --- Agricultural Research Council-Tropical and Subtropical Crops, South Africa A Swart --- Agricultural Research Council-Plant Health and Protection, South Africa M Marais --- Agricultural Research Council-Plant Health and Protection, South Africa D De Waele --- Unit for Environmental Sciences and Management, South Africa H Fourie --- Unit for Environmental Sciences and Management, South AfricaInformation about the non-target effects of glyphosate, a broad-spectrum systemic herbicide on soil-borne nematodes is scarce and not well documented for South African agricultural fields. In the present study, the abundance and identity of plant-parasitic nematodes in roots and rhizosphere... -
Project-based learning to encourage parental involvement in promoting indigenous technology in schools
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Khazamula J. Maluleka --- , South AfricaThe Department of Basic Education requests teachers to use the design process as teaching methodology in Technology Education. Learners’ completion of projects poses a challenge for teachers, who are supposed to ensure that their learners undertake a project as part... -
Supporting innovation through a multi-level platforms approach: A case study of the South African fresh fruit industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Richmore Dondofema --- , South Africa Sara S. (Saartjie) Grobbelaar --- , South AfricaAgricultural innovation platforms have become recognized as a key mechanism through which to stimulate innovation for inclusive development (I4ID) by serving as a space for agricultural stakeholders to engage, and to develop and diffuse agricultural innovations. This study investigates how... -
Modelling spillover effects between the UK and the US stock markets over the period 1935–2020
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Olalekan Aladesanmi --- , United KingdomThis study investigates the spillovers of shocks and volatilities between the UK and the US stock markets over the period 1935–2020. The empirical analysis is carried out for the full sample and four subsample periods by applying the asymmetric GARCH-BEKK... -
On the challenges of making a sustainable kitchen: experimenting with sustainable food principles for restaurants
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Matheus Alves Zanella --- , SwitzerlandConcerns with the sustainability of food have moved from the margins of the gastronomy world to a much more central stage, mirroring a growing concern by citizens around food origins, carbon footprint and social practices in value chains. Evolving literature... -
Project planning and control analysis for suburban photovoltaic alternative electric power supply in Southwestern Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ibikunle Olalekan Ogundari --- , Nigeria Funso Ayotunde Otuyemi --- , UKAlternative photovoltaic (PV) electric power systems are designed for suburban residential complexes in Nigeria’s Southwestern region as succour to erratic grid power supply. The initial project in suburban Ibadan, Oyo State was analyzed as model for other stakeholders in the... -
Changes in pastoral mobility in a semi-arid montane region of South Africa: The role of policy and legislation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M Igshaan Samuels --- , South Africa Nicky Allsopp --- , South Africa M Timm Hoffman --- , South AfricaLegislation and policy are key tools used by governments to change the socio-economic and political landscape of agrarian systems with consequences for mobile pastoralism. This study used the social-ecological systems framework to examine how pastoral mobility in the semi-arid, montane... -
Reliability and quality of artificial nectar feeders for birds in the Cape Floristic Region
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anina Coetzee --- , South Africa Phoebe Barnard --- , South Africa Anton Pauw --- , South AfricaSupplementary feeding of birds may have considerable ecological and evolutionary effects on bird communities. However, there is a lack of basic information on the prevalence, frequency and quality of supplementary feeders, especially in African urban areas. Here we describe the... -
Can bait improve the efficiency of underwater video monitoring of fish in headwater streams? A case study from the Rondegat River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SZ Bajaba --- , South Africa S Hugo --- , South Africa AJ van Wyk --- , South Africa SM Marr --- , South Africa NG Vine --- , South Africa OLF Weyl --- , South AfricaThe use of action cameras for underwater video sampling provides a non-harmful alternative for monitoring endangered and threatened fish populations in clear headwater streams. Here, we examine the use of baited remote underwater video systems (BRUVS) for the monitoring of... -
Land reform and its impact on the arid South African environment: Riemvasmaak as a case study
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: GS Fleury --- , South Africa MT Hoffman --- , South Africa SW Todd --- , South AfricaThe 75 000 ha, hyper-arid area of Riemvasmaak represents one of the first land restitution cases in post-apartheid South Africa. People who were forcibly removed in 1974 were resettled in 1995. We describe the impact that people and domestic livestock... -
Diversity of benthic macroinvertebrates in anthropogenically disturbed Aturukuku River, Eastern Uganda
Item type: Journal Article • Journal: African Zoology • Authors: Hannington Ochieng --- , Uganda Willy P Gandhi --- , Uganda Godfrey Magezi --- , Uganda James Okot-Okumu --- , Uganda Robinson Odong --- , UgandaBiodiversity conservation has focused on large vertebrates and plants with pronounced economic value, compared with smaller organisms such as benthic macroinvertebrates that play a particular role in freshwater ecosystems. The increasing loss and degradation of freshwater habitats, coupled with low... -
The innovation system for diffusion of small wind in Kenya: Strong, weak or absent? A technological innovation system analysis
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Faith Hamala Wandera --- , KenyaKenya is currently seeking to promote rural electrification through a decentralized approach for deploying renewable energy. This article asks whether an innovation system is in place to support the diffusion of small wind which could complement rural electrification using solar... -
Walking with herders: following into the multispecies classroom
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: William Ellis --- , South Africa Clement Cupido --- , South Africa Mogamat Igshaan Samuels --- , South AfricaThe recently developed walking ethnography, or go-along method, to study pastoralists in a participatory manner provides data that the usual sit-down interview is unable to realise, not least because it shifts the power dynamic between researcher and researched. The herder’s... -
An innovation intermediary for Nairobi, Kenya: Designing student-centric services for university-industry collaboration
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mikko Koria --- , United Kingdom Roberto Hinojosa Osorno --- , Mexico Ida Telalbasic --- , United Kingdom Delia del Carmen Ramírez Vázquez --- , Mexico Emmy Chirchir --- , KenyaEngaging students as partners in university-industry collaboration (UIC) through challenge-based and real-life projects creates significant value for all participants through novel educational approaches, talent recruitment, user-driven innovation, new resources, and research-related opportunities. However, as these practices have developed iteratively over... -
A critical review of macroinvertebrate-based bioassessment approaches in Africa’s lotic systems: developments, challenges, and legal requirements
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: John Peter Obubu --- , Ethiopia Seyoum Mengistou --- , Ethiopia Tadesse Fetahi --- , Ethiopia Wolfram Graf --- , Austria Robinson Odong --- , UgandaWorldwide, water resources have an impact on all forms of life as lotic systems are networks that interconnect water resources and land. They are important for navigation, water supplies, agriculture, recreation, and industrial development and help to regulate changes in... -
Conservation Agriculture farming systems in rainfed annual crop production in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: R van Antwerpen --- , South Africa MC Laker --- , South Africa DJ Beukes --- , South Africa JJ Botha --- , South Africa A Collett --- , South Africa M du Plessis --- , South AfricaSouth Africa is, relative to the rest of the world, a water scarce country with a limited amount of arable land, especially land with a long-term sustainable agricultural production potential. Agriculture should therefore focus on the implementation of soil and... -
Increasing resilience to the SARS-CoV-2 virus and other health threats in food-insecure communities
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Karen Morris --- , South Africa Thandi Puoane --- , South AfricaThe health of the majority of South Africa’s population is seriously threatened by hunger and micronutrient deficiency, with impaired immune response a real threat, which the current SARSCoV-2 virus pandemic has highlighted. Traditional household food-processing techniques can, amongst other advantages,... -
Sponges as simple biomonitoring tools for trace element pollution in marine environments: insights from a Kenyan study focused on the leaf sponge Phyllospongia foliascens
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BO Ohowa --- , Kenya LI Kiteresi --- , Kenya VW Wanjeri --- , Kenya SM Mwamburi --- , Kenya SL Tunje --- , KenyaThe potential of the marine leaf sponge Phyllospongia foliascens as a simple biomonitor of trace element pollution was assessed. The concentrations of arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), manganese (Mn) and zinc (Zn) in sediments and in P... -
Strengthening intermediaries in the National System of Innovation (NSI): Case of the South African Council for Natural Scientific Professions
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Bongiwe Mncwango --- , South Africa Samuel Fongwa --- , South AfricaThis paper uses the National System of Innovation (NSI) framework to interrogate the role of professional organizations as intermediaries within the South African NSI. Using the case of the South African Council for Natural Scientific Professions (SACNASP), we explore the... -
Parental decision-making in infant and child male circumcision: a case study in two townships in Gauteng, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Eurica Palmer --- , South Africa Lochner Marais --- , South Africa Michelle Engelbrecht --- , South AfricaParental decision-making in infant and child male circumcision is influenced by complex, interrelated factors on many levels. Several studies have highlighted reasons for the acceptance and non-acceptance of child male circumcision. This study investigates the factors that influence parental decision-making... -
Development of a multimetric index for assessing the ecological integrity of some selected rivers and streams in the north-eastern part of Lake Tana sub-basin, Ethiopia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Amelework Zewudu --- , Ethiopia Getachew Beneberu --- , Ethiopia Minwyelet Minigst --- , Ethiopia Amare Mezgebu --- , EthiopiaA multimetric index was developed using benthic macroinvertebrates to assess the ecological health of selected rivers and streams in the north-eastern part of Lake Tana subbasin, Ethiopia. One-time extensive sampling was carried out during the post-rainy season (November–December) of 2016... -
Evolution of Iran’s gas turbine sectoral innovation system as a complex product system (CoPS)
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mostafa Safdari Ranjbar --- , Iran Soroush Ghazinoori --- , Iran Manochehr Manteghi --- , IranMany scholars have studied various sectoral innovation systems that are categorized as mass-produced goods, whereas there are only a few previous studies that have investigated complex product systems (CoPS). CoPS are defined as high-cost, engineering, and software-intensive goods, systems, networks,... -
Aggregate dynamics and intra-aggregate carbon contents as influenced by long-term wheat production management in semi-arid South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: LS Tlomatsana --- , South Africa PF Loke --- , South Africa E Kotzé --- , South Africa MP Aghoghovwia --- , South AfricaSoil aggregate dynamics have received renewed interest due to their relevance in carbon (C) stabilisation. This study evaluated changes in aggregate-size distribution and intra-aggregate C following 41 years of wheat production in semi-arid central South Africa. Management practices that have... -
An indicator-based approach for cross-realm coastal biodiversity assessments
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: LR Harris --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa AL Skowno --- South African National Biodiversity Institute (SANBI), South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa L van Niekerk --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa SD Holness --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa M Monyeki --- South African National Biodiversity Institute (SANBI), South Africa P Majiedt --- South African National Biodiversity Institute (SANBI), South AfricaEcosystem status assessments are generally separated into realm-specific analyses (terrestrial, freshwater, estuarine or marine), but without integrating these into a coherent assessment of coastal biodiversity across the land–sea interface. Trends in assessment indicators in coastal versus non-coastal areas have also... -
The contribution and value of the trait-based approach to water resource protection
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Oghenekaro Nelson Odume --- , South AfricaFreshwater is one of the Earth’s most crucial resources for social-economic development and prosperity. Biomonitoring contributes to water resource protection by integrating a holistic picture of ecosystem health through an analysis of resident biota. The taxonomy-based approach, in which taxa... -
DRIFT: incorporating an eco-social system network and time series approach into environmental flow assessments
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AR Joubert --- , South Africa CA Brown --- , South Africa JM King --- , South Africa H Beuster --- , South Africa A Greyling --- , South AfricaDRIFT (Downstream Response to Imposed Flow Transformation) is an interactive, ecological-social process and software package to assist with environmental flow assessments and river management decision-making. It was originally developed in the 1990s and has subsequently evolved and been applied in... -
Management barriers to innovation performance in Nigerian manufacturing sector
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Waliu M. Adegbite --- College of Business & Economics, University of Johannesburg, South Africa Cookie M. Govender --- College of Business & Economics, University of Johannesburg, South AfricaInnovation is an essential strategy for businesses to increase performance and profitability. While current literature focuses on technology and other technical barriers to innovation, many businesses in developing countries are unaware of the significance of organizational policy and practices on... -
Height growth strategies of Mimosa scabrella along a chronosequence
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Vinicius Costa Cysneiros --- Federal University of Paraná, Brazil Sebastião do Amaral Machado --- Federal University of Paraná, Brazil Allan Libanio Pelissari --- Federal University of Paraná, Brazil Edilson Urbano --- State University of Mato Grosso do Sul, Aquidauana University Unit, BrazilAssessing variations in tree allometry is useful for understanding height growth strategies in relation to life-history trajectories, light competition and environmental restrictions. Scaling exponent and asymptotic heights obtained from height–diameter (HD) models may elucidate how trees optimise growth strategies and... -
Establishing support groups for HIV-infected women: Using experiences to develop guiding principles for project implementation
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Maretha Visser --- Department of Psychology, University of Pretoria, Jonathan Mundell --- Kalafong Hospital,HIV-infected women need support to deal with their diagnosis as well as with the stigma attached to HIV. As part of their practical training, Master's-level psychology students negotiated with the staff of four clinics in townships in Tshwane, South Africa,... -
Perceived influence of value systems on the uptake of voluntary medical male circumcision among men in Kweneng East, Botswana
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Thandisizwe R. Mavundla --- Department of Health Studies, College of Human Sciences, University of South Africa, South Africa Fungai Mbengo --- School of Nursing and Midwifery, Edith Cowan University, Australia Khanyenda Bruce Ngomi --- Department of Health Studies, College of Human Sciences, University of South Africa, South AfricaBotswana is one of the countries in Eastern and Southern Africa significantly impacted by the Human Immunodeficiency Virus (HIV). To control the spread of HIV, the government in 2009 rolled out the voluntary medical male circumcision (VMMC) programme as an... -
Evaluation of the quality constructs of a tax management system based on DeLone and McLean IS success model
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Godwin Banafo Akrong --- School of Management and Economics (UESTC), University of Electronic Science and Technology, People’s Republic of China Yunfei Shao --- School of Management and Economics (UESTC), University of Electronic Science and Technology, People’s Republic of China Ebenezer Owusu --- University of Ghana, GhanaWe presented a novel method to analyze the impact tax management systems have on users (individual impact) in this study. The interrelationship among the three information system (IS) quality constructs is examined. The study is based on the evaluation undertaken... -
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... -
Context-based factors that influence healthcare information system implementation in resource-constrained public hospitals
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mourine Achieng --- University of South Africa, South Africa Ephias Ruhode --- University of the West of Scotland, ScotlandTechnology-based interventions in healthcare are often anticipated to improve the quality of healthcare services. These expectations are based on a perceived belief in the ability of technology to alleviate some of the challenges associated with manual, paper-based healthcare service delivery... -
Seedling establishment and early growth in Calobota sericea subjected to moisture stress
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Francuois Müller --- , South Africa Letty Masemola --- , South Africa Stephen Modiba --- , South Africa Nothando Ngcobo --- , South AfricaThe South African perennial legume Calobota sericea (Thunb.) Boatwr. & B-E van Wyk has been shown to be drought tolerant as mature plants, but information on drought tolerance of seedlings is lacking. This study evaluated the impact of moisture stress... -
Mapping fine-scale demersal trawl effort for application in ecosystem assessment and spatial planning
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Currie --- South African National Biodiversity Institute (SANBI), South Africa LR Harris --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa LJ Atkinson --- South African Environmental Observation Network (SAEON), South Africa TP Fairweather --- Fisheries and the Environment (DFFE), South Africa KJ Sink --- South African National Biodiversity Institute (SANBI), South AfricaFine-scale maps of fishing activity are valuable information layers for fisheries management, assessments of biodiversity impacts and marine spatial planning. Our aim was to develop an accurate map of demersal trawling intensity in South Africa and to demonstrate its utility... -
Frog and reptile conservation through the lens of South Africa’s nature-based cultural practices
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Fortunate M Phaka --- North-West University, South Africa Jean Hugé --- Hasselt University, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Belgium Maarten PM Vanhove --- Hasselt University, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Belgium Louis H du Preez --- North-West University, South AfricaEthnoherpetology improves our understanding of the conservation implications of nature-based cultural practices through investigations of the influence of traditional culture on frog and reptile species (herptiles). Improved understanding of the implications of human activities on these taxa is especially important... -
The role of the social sciences and humanities in pandemic preparedness responses: insights gained from COVID-19, HIV and AIDS and related epidemics
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Kaymarlin Govender --- University of KwaZulu-Natal, South Africa Judith King --- , South Africa Patrick Nyamaruze --- University of KwaZulu-Natal, South Africa Tim Quinlan --- University of KwaZulu-Natal, South AfricaThe COVID-19 pandemic, particularly from 2020 to mid-2022, debilitated the management of the HIV epidemic in Africa. The multiple effects included well-documented HIV service interruptions, curtailment of HIV prevention programmes, the associated marked increase in both the risk for HIV... -
Innovation systems, value chains and industrial clusters in developing economies: Case of Jalandhar’s sports goods industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Swati Mehta --- Guru Nanak Dev University, IndiaThe paper explores the relationship between innovation systems (IS) and participation in value chains (VCs) to understand the challenges concerning upgrading of an industrial cluster in a developing country. It is argued that the inter-linkages of various actors, organizations and... -
Drought release and post-drought changes in herbaceous composition and diversity in two land uses subjected to selective bush control in a semi-arid Kalahari savanna
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: N van Staden --- North-West University, South Africa A Marquart --- North-West University, South Africa K Kellner --- North-West University, South AfricaLand degradation due to bush encroachment and drought threatens the well-being of land users and forage production in the semi-arid savannas of southern Africa. This study aimed to analyse how herbaceous vegetation in the Kalahari savanna can recover from drought,... -
Stability of Riemann solutions to a class of non-strictly hyperbolic systems of conservation laws
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Shiwei Li --- Henan University of Engineering, P.R. ChinaThis paper is concerned with Riemann problem for a class of non-strictly hyperbolic systems of conservation laws. The two kinds of Riemann solutions including vacuum and delta shock wave are constructed. Under the generalized Rankine-Hugoniot relation and entropy condition, we... -
Stability analysis of fully dynamic piezoelectric beams with internal fractional delay
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jianghao Hao --- Shanxi University, P.R. China Jing Yang --- Shanxi University, P.R. ChinaIn this paper, we are interested in the stability analysis of one-dimensional fully dynamic piezoelectric beam systems with internal fractional delay under different feedback controls (boundary and internal). By introducing two new equations to deal with fractional delay, equivalent new... -
Periodic solution for perturbed Hamiltonian systems
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Khaled Khachnaoui --- University of Kairouan, TunisiaIn this paper, we study the existence of infinitely many periodic solutions for second-order perturbed Hamiltonian systems. By using variational methods, we obtain new criteria to guarantee the existence of infinitely many periodic solutions using Bolle’s perturbation method. Our results... -
On the characteristic functions and Dirchlet-integrable solutions of singular left-definite Hamiltonian systems
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Elgiz Bairamov --- Ankara University, Turkey Kenan Tas --- Usak University, Turkey Ekin Uğurlu --- Çankaya University, TurkeyIn this work, a singular left-definite Hamiltonian system is considered and the characteristic-matrix theory for this Hamiltonian system is constructed. Using the results of this theory we introduce a lower bound for the number of Dirichlet-integrable solutions. Moreover we share... -
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... -
Optimal system and conservation laws for the generalized Fisher equation in cylindrical coordinates
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.H. Kara --- University of the Witwatersrand, South Africa Sonia Naseer --- Government College University, Pakistan Ali Raza --- Lahore School of Economics, Pakistan F.D. Zaman --- Government College University, PakistanThe reaction diffusion equation arises in physical situations in problems from population growth, genetics and physical sciences. In many practical situations, the physical domain of the problem is adequately described in cylindrical Coordinates. Therefore, we consider the Fisher equation in... -
A study on approximate controllability of linear impulsive equations in Hilbert spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nazim I. Mahmudov --- Eastern Mediterranean University, TurkeyIn this paper, we study an approximate controllability for the impulsive linear evolution equations in Hilbert spaces. We give a representation of solution in terms of semigroup and impulsive operators. We present the necessary and sufficient conditions for approximate controllability... -
Why traditional diets are more relevant than ever today
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Karen Cheryl Morris --- Naturopath, South Africa Thandi Puoane --- University of the Western Cape, SAThe current epidemic of obesity and its co-morbidities reflect an urgent need to reform our modern eating patterns. This commentary proposes the reclamation of our traditional diets of the precolonial, preindustrial era, which are argued to be more sustainable, in... -
Floristic and structural changes in a neotropical urban novel forest over 13 years
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Marcelly de Souza Ventura --- Universidade Federal de Juiz de Fora, Brazil Thales Castilhos de Freitas --- Universidade Federal de Juiz de Fora, Brazil Ricardo Montianele de Castro --- Universidade Federal de Juiz de Fora, Brazil Mariana Couto Cruz --- Universidade Federal de Juiz de Fora, Brazil Kelly Antunes --- Universidade Federal de Juiz de Fora, Brazil Taísa Nascimento de Souza --- Universidade Federal de Juiz de Fora, Brazil Breno Moreira --- Universidade Federal de Juiz de Fora, Brazil Fabrício Alvim Carvalho --- Instituto de Ciências Biológicas, Universidade Federal de Juiz de Fora, BrazilThe ecological importance of non-native species is the main characteristic of novel ecosystems. Pinus elliottii species is highly invasive in tropical forests and is commonly found in secondary forests in Brazil. We investigated the floristic and structural changes in an... -
Reconceptualising success in hospitality internships: a new perspective on students’ achievement factors
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Nicole Vermolen --- NHL Stenden University of Applied Sciences, The NetherlandsThis viewpoint article examines the challenges and factors influencing student success during hospitality internships, particularly those organised by a hotel management school in collaboration with international host companies. A previous study on the topic highlights that only 21% of students... -
Nearly six decades of grazing research published by the Grassland Society of Southern Africa: trends, recommendations and gaps
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: G Arena --- , South Africa H-J Hawkins --- , South AfricaWe reviewed research on grazing in extensive rangelands published by the Grassland Society of Southern Africa’s (GSSA) flagship journal, founded in 1966. We aimed to identify and synthesise emerging themes, trends, key recommendations and research gaps. From 1966 to 2023,... -
Littoral substrates and nest properties of Coptodon rendalli vary with distance from the shoreline in a tropical impoundment, southeast Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RJ Chateya --- National University of Science and Technology, Zimbabwe HGT Ndagurwa --- National University of Science and Technology, ZimbabweThe change in littoral substrates and Coptodon rendalli nest properties along the inshore–offshore gradient of Mushandike Dam in southeast Zimbabwe, impacted by long-term water-level fluctuations, were studied in March 2016. Substrate and nest properties were measured in four contiguous 25... -
Assessment of the inland wetland ecosystem types in South Africa: threats and protection
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H van Deventer --- Council for Scientific and Industrial Research (CSIR), South Africa Jeanne L Nel --- , The NetherlandsEcosystem threat status (ETS) and ecosystem protection levels (EPLs) are headline indicators that can assess freshwater ecosystems at a country-wide scale. A spatial layer of freshwater, inland wetland ecosystem types of South Africa was combined with a range of spatial... -
Naming South African frogs and reptiles in nine Indigenous languages
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Fortunate M Phaka --- African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, North-West University, South Africa Jean Hugé --- Hasselt University, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Belgium Fortune Ravhuanzwo --- African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, North-West University, South Africa Maarten PM Vanhove --- Hasselt University, Centre for Environmental Sciences, Research Group Zoology: Biodiversity and Toxicology, Belgium Louis H du Preez --- African Amphibian Conservation Research Group, Unit for Environmental Sciences and Management, North-West University, South AfricaScientific taxonomy, as a standardised means of communicating about wildlife, might have limited use or relevance for wildlife conservation stakeholders with minimal understanding of scientific names. Indigenous language names can improve species-specific communication with non-expert conservation stakeholders due to their... -
Breeding ecology of the Madagascar Grebe Tachybaptus pelzelnii in Bemanevika Protected Area in the northern highlands of Madagascar
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Delphin Rasolonjatovo --- The Peregrine Fund Madagascar Project, Madagascar Lily-Arison Rene De Roland --- The Peregrine Fund Madagascar Project, Madagascar Tolojanahary Andriamalala --- The Peregrine Fund Madagascar Project, Madagascar Marius Rakotondratsima --- The Peregrine Fund Madagascar Project, Madagascar Séraphin Fabrice --- The Peregrine Fund Madagascar Project, Madagascar Stéphanie Razakaratrimo --- The Peregrine Fund Madagascar Project, Madagascar Yverlin ZM Pruvot --- The Peregrine Fund Madagascar Project, Madagascar Russell Thorstrom --- The Peregrine Fund, United StatesWe studied the breeding ecology of the endangered Madagascar Grebe Tachybaptus pelzelnii (family Podicipedidae) at Bemanevika Protected Area, during two consecutive years (October 2020–September 2022). Two breeding units were observed: pairs and trios made up of one male and two... -
Unlocking Northern Cyprus: innovations in destination management for enhanced tourism experiences
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Sima Rahimizhian --- Eastern Mediterranean University, Türkiye Foad Irani --- Final International University, TürkiyeThe tourist sector is currently one of those that has paved the way in the application of intelligent communication and information technology. Intelligent information systems can significantly contribute to the continued growth of the tourist business, particularly virtual tourism, given... -
Allometric biomass estimations for Senegalia mellifera and Vachellia reficiens
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Jerome M Boys --- Namibia University of Science and Technology, Namibia Gert N Smit --- University of the Free State, South Africa Paul J Malan --- University of the Free State, South AfricaA well established tool that is able to provide a detailed estimation of the leaf and wood biomass of woody plants is the third version of the Biomass Estimate from Canopy Volume (BECVOL3) model. An Excel-based biomass quantification tool is... -
Bio-cryptography application for sending encrypted information using DNA cipher
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Karima Aksa --- Mostapha Ben Boulaid University, Algeria Oussama Larbi --- Mostapha Ben Boulaid University, Algeria Amira Fourar --- Mostapha Ben Boulaid University, AlgeriaCryptography-combined algorithms are obtained by a combination of algorithms, as their reliability is higher and harder to attack than the component algorithms separately. Thus, the combined algorithms are often known for classical cryptography. The goal of encryption is to make... -
Influence of actors’ interactions under agricultural innovation system lens on the adoption of rice innovations in Mvomero district and Ifakara Town council
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Sospeter Jibunge Charles --- University of Dar es Salaam, TanzaniaThis study addresses the gap in empirical evidence on how and to what extent interactions among numerous actors within the Agricultural Innovation System (AIS) can influence smallholder farmers’ adoption of rice innovations. The study employed a mixed-methods embedded design to... -
Assessing the adoption potential of online currency exchange systems: A case study of currency dealers in Mogadishu, Somalia
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mohamed Ibrahim Nor --- SIMAD University, Somalia Abdifatah Farah Ali --- SIMAD University, SomaliaThis study investigates the readiness of currency dealers in Somalia to adopt online currency exchange systems, addressing the research question: What factors influence the acceptance and adoption of online currency exchange platforms in an unregulated market? Using a quantitative approach,... -
Evaluating the histopathology, condition index and stress-on-stress response of caged brown mussels Perna perna for monitoring marine coastal pollution in Senegal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Tabane --- Centre Régional de Recherche en Écotoxicologie et Sécurité Environnementale (CERES-Locustox), Unité Biologie, Senegal F Cazier --- Centre Commun de Mesures, Université du Littoral Côte d’Opale, France D Dewaélé --- Centre Commun de Mesures, Université du Littoral Côte d’Opale, France K Hylland --- University of Oslo, Norway CT Ba --- Université Cheikh Anta Diop, Senegal M Fall --- Université Cheikh Anta Diop, SenegalThis study is the first in a coastal West African country to evaluate the histopathology, condition index and stress-on-stress response time of caged brown mussels Perna perna for use in pollution monitoring of coastal ecosystems. Perna perna collected from an... -
Revitalizing tribal economic systems through indigenous entrepreneurship: Innovations and strategies
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Anjali Chandulal Lakum --- Parul Institute of Social Work, Parul University, IndiaAmid growing global interest in sustainable and inclusive development, indigenous entrepreneurship and grassroots innovations are increasingly recognized as powerful yet underexplored pathways for community resilience. This study investigates how such innovations contribute to the revitalization of tribal economic systems, with... -
War metaphors as names for medical concepts in Sesotho newspaper HIV and AIDS communication
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Ntšoeu Seepheephe --- National University of Lesotho, LesothoThe study examines the behaviour and the ideological functions of war metaphors that are used in Sesotho newspaper communication on HIV and AIDS. Using the dynamic systems approach towards metaphor, I explore the use of these metaphors in three major... -
Exploring the strategies shaping application programming interface development and integration in digital music platforms: A qualitative case study
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Joshua Ofoeda --- University of Professions Studies, Ghana Richard Boateng --- University of Ghana, Ghana Choudrie Jyoti --- University of Hertfordshire, UK John Effah --- University of Ghana, GhanaApplication Programming Interfaces (APIs) have become essential to contemporary software development, supporting the growth of digital platforms and ecosystems. APIs enable developers to create applications by providing functionalities that facilitate communication. Despite their importance in supporting digital platforms and ecosystems,... -
GeoHostel: Location-based recommendation of hostels in the context of higher education through geospatial technology
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nana Yaw Asabere --- Accra Technical University, Ghana Gare Lawson --- Raycom Technologies, Ghana Bernice Quartey-Papafio --- Ghana Police Service, Ghana Marcellinus Kuuboore --- University of Professional Studies, Ghana Nana Yaw Duodu --- Accra Technical University, GhanaAn efficient data management system is essential in the field of student housing to guarantee the availability of high-quality data that can make it easier to find appropriate hostels. Although recommender systems concerning hotels and tourism points of interest (POI)... -
Investigation of the variables affecting the competitiveness of the sawmill industry and their interactions using systems dynamics modelling
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Vhuhwavho Tshavhungwe --- University of Pretoria, South Africa Rudolph Oosthuizen --- University of Pretoria, South Africa Schalk Grobbelaar --- University of Pretoria, South AfricaThe sawmill industry, just like many other industries, is a complex system with several variables at play. This complexity impacts strategy implementation and decision-making in the individual sawmills. The study aimed to examine the different variables interacting with each other... -
Silvicultural management strategies for climate change mitigation with the focus on plantation forests
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Ben du Toit --- Stellenbosch University, South AfricaThis technical note explores several practical actions whereby short-rotation plantation forests in warm climates can be managed for increased resilience in the face of climate change. It includes landscape level issues such as ecosystem resilience, limiting the invasive tendencies of... -
Climate adaptation, geopolitics, and structural exclusion in South African agriculture
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael J Savage --- South African Journal of Plant and Soil,Southern African agriculture stands at a critical intersection of accelerating climate risk and entrenched structural inequality. While climate change increasingly shapes global research and policy agendas, other intersecting forces—such as the divide between large-scale commercial agriculture and smallholder farming, the... -
Functional diversification and performance of wheat–canola rotations in the Western Cape
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A Louw --- Stellenbosch University, South Africa PA Swanepoel --- Stellenbosch University, South Africa S van der Westhuizen --- Stellenbosch University, South Africa J Strauss --- Stellenbosch University, South AfricaCrop rotation serves as a fundamental pillar within conservation agriculture (CA) farming systems, enabling the integration of more diverse crops and livestock. With increasing weather variability, new methods are needed to assess the long-term effects of diversification on the agronomic... -
‘The mountain has a story to tell’: transhumant production systems in the US Intermountain West
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Hailey Wilmer --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Jonathan Spiess --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Katherine D White --- Department of Ecosystem Science and Management, University of Wyoming, USA Amira Burns --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Steven Cox --- Former Dubois Ranger District, Caribou-Targhee National Forest, USA John Derek Scasta --- Laramie Research and Extension Center, Department of Ecosystem Science and Management, University of Wyoming, USA Devan Allen McGranahan --- Livestock and Range Research Laboratory, USDA Agricultural Research Service, USA Carrie S Wilson --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA Will Munger --- USDA-ARS Range Sheep Production Efficiency Research Unit, USA J Bret Taylor --- USDA-ARS Range Sheep Production Efficiency Research Unit, USAGrazing systems research has taken a notable social-ecological turn in response to recent debates, and integrative work is still needed to address gaps in our understanding of multiscalar dynamics in transhumant systems. Transhumance encompasses diverse cultures, ecological relationships, and traditions... -
Daily herd movements across the wet and dry season in the semi-arid communal rangelands of Namaqualand, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MH Tapela --- Department of Biodiversity and Conservation Biology, University of the Western Cape, South Africa MI Samuels --- Department of Biodiversity and Conservation Biology, University of the Western Cape, South Africa CF Cupido --- ARC–Animal Production (Range and Forage Sciences), South Africa A Finca --- ARC–Animal Production (Range and Forage Sciences), South Africa TC Zondani --- ARC–Animal Production (Range and Forage Sciences), South Africa A Engelbrecht --- Department of Biodiversity and Conservation Biology, University of the Western Cape, South AfricaThe role of indigenous grazing management practices in sustainable natural resource use has been widely identified and recognised in the literature. However, the grazing management practices of Nama pastoralists in the semi-arid regions in Namaqualand in South Africa have not... -
Marine–estuarine connectivity, salinity and sedimentation in the St Lucia system, South Africa, following reconnection with the uMfolozi River
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RH Taylor --- Independent Hydro-Ecologist, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity, South Africa CE Fox --- Ezemvelo KwaZulu-Natal Wildlife, St Lucia Estuary, South Africa JB Adams --- Botany Department and Institute for Coastal & Marine Research, Nelson Mandela University, South AfricaThis study reviews selected physical and biotic responses of the St Lucia estuarine system to the recently implemented management approach of re-establishing the connection between the uMfolozi River and the St Lucia Estuary. This connection was severed in the 1950s... -
Comparing fixed count and observed/expected taxa approaches in diatom-based water quality assessment: implications for monitoring efficiency and accuracy
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Holmes --- Africa Earth Observatory Network (AEON) – Earth Stewardship Science Research Institute (ESSRI), Nelson Mandela University, South Africa JC Taylor --- Unit for Environmental Sciences and Management (UESM), North-West University, South Africa B Linol --- Africa Earth Observatory Network (AEON) – Earth Stewardship Science Research Institute (ESSRI), Nelson Mandela University, South AfricaDiatom-based indices are widely used for freshwater bioassessment, yet methodological variability, particularly in count strategies, can influence ecological classification outcomes. This study compares a traditional fixed count (FC) approach with an observed/expected taxa (OE) strategy across five riverine sites in...
