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Towards a method of assessing the veld condition of the valley bushveld in the Eastern Cape
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: G C Stuart‐Hill --- Department of Agriculture and Water Supply (Eastern Cape Region), A J Aucamp --- Department of Agriculture and Water Supply (Eastern Cape Region), C J G Le Roux --- Department of Agriculture and Water Supply (Eastern Cape Region), W R Teague --- Department of Agriculture and Water Supply (Eastern Cape Region),Currently, no technique is available for assessing the condition of Valley Bushveld in the Eastern Cape. The objective of this investigation was to develop a method of scoring bushveld according to its productive condition. It was established, through principal component... -
A multivariate approach to a specific problem of grouping maize cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: MarieF. Smith --- , Republic of South AfricaThe use of multivariate techniques in the analysis of multivariate problems is illustrated by comparing the results of univariate and multivariate techniques applied to the problem of establishing the nutritional requirements of, and the acid tolerance differences between maize cultivars... -
Diversity analysis in Ethiopian and some exotic collections of linseed
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. Adugna --- Department of Plant Sciences, South Africa M.T. Labuschagne --- Department of Plant Sciences, South AfricaSixty linseed accessions predominantly from Ethiopia were evaluated for 11 characters in a randomised complete block design with three replications under glasshouse conditions at the UFS, during 2000 and 2001. The major objectives were to assess the diversity of the... -
Pollination and yield of winter-grown greenhouse tomatoes as affected by boron nutrition, cluster vibration and relative humidity
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.N. Smit --- Department of Agronomy, Republic of South Africa N. J.J. Combrink --- Department of Agronomy, Republic of South AfricaProblems with reduced yields owing to poor pollination where tomatoes are grown out-of-season in low cost greenhouses, motivated this study. Greenhouse tomatoes were planted in acid washed river sand. Four balanced nutrient solutions, with different boron (B) levels (0.02; 0.16;... -
Multivariate analysis of selected allied chemical properties of soils close to an abandoned manganese mine
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: G. E. Ekosse --- , South Africa P. S. Fouche --- , South AfricaThis study aimed at understanding the statistical relationships between base saturation percent (BSP), cation exchange capacity (CEC), pH(water) and electrical conductivity (EC) in soils within close proximity to the abandoned Kgwakgwe Mn oxide ore mine, Botswana. Four hundred soil samples... -
Perceptions of HIV, AIDS and tuberculosis among patients on antiretroviral therapy in Bulawayo, Zimbabwe: implications for the provision of HIV and TB care services
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Alexander Rödlach --- Department of Sociology, Anthropology and Social Work, United States RiittaA Dlodlo --- , France ZaneleE Hwalima --- Health Services Department, ZimbabweThe objectives of the research were to explore perceptions of HIV, AIDS and tuberculosis (TB) among individuals enrolled in antiretroviral therapy (ART) at two municipal clinics in Bulawayo, Zimbabwe, and to assess the implications of these perceptions on the provision... -
Water quality assessment and application of the biological diatom index in the Kebir-East wadi, Algeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: N Chaïb --- Laboratoire de Recherche et de Conservation des Zones Humides, Algeria J Tison-Rosebery --- Cemagref Bordeaux, FranceA total of 118 benthic diatom taxa were recorded during a survey in 2007 of the Kebir-East wadi, north-eastern Algeria. Fourteen samples were collected at seven sampling stations in winter and summer. The majority of diatom taxa comprised cosmopolitan species... -
Characterisation of potential aquaculture pond effluents, and physico-chemical and microbial assessment of effluent-receiving waters in central Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: YB Ansah --- Department of Fish and Wildlife Conservation, USA EA Frimpong --- Department of Fish and Wildlife Conservation, USA S Amisah --- Department of Fisheries and Watershed Management, GhanaAn understanding of specific aquaculture systems and the impacts of their management practices leads to sound and cost-effective policies to protect the aquatic environment. Water samples were collected in 2009 from fish ponds, streams that receive effluents directly from ponds... -
Clustering and Innovation in the Auto-mechanic Industry in Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: B.A. Oluwale --- African Institute for Science Policy and Innovation, OAU, M.O. Ilori --- African Institute for Science Policy and Innovation, OAU, T.O. Oyebisi --- African Institute for Science Policy and Innovation, OAU,This study determined the effect of clustering on innovation in the auto-mechanic industry in south-western Nigeria. It involved 13 auto-mechanic villages (clusters) comprising of 237 master mechanics located within Lagos and Ogun states and 145 master mechanics in Osun state... -
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... -
The confounding influence of urban informality on innovation and production specialisation in production clusters: evidence from Nairobi
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: John C. Harris --- Division of Regional and City Planning, College of Architecture, USAThis paper investigates two agglomeration economies, innovation and production specialisation, within Nairobi's handicraft sector. The paper asks if and by what mechanics urban informality might interfere with these important potential outcomes of clustered production. A hundred and two semi-structured interviews... -
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... -
Genotypic variation and correlations between yield system traits and yield components in African landraces of bambara groundnut
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Olusanya C Alake --- Department of Plant Breeding and Seed Technology, Nigeria Moninuola A Ayo-Vaughan --- Department of Plant Breeding and Seed Technology, NigeriaGenetic information on a variety of traits contributing to grain yield is required to improve many crops. However, this information is lacking in bambara groundnut (Vigna subterranea (L.) Verdc.). To this end, 24 African bambara groundnut landraces were investigated for... -
Selection of drought-tolerant tef (Eragrostis tef) genotypes using drought tolerance indices
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Mizan Tesfay Abraha --- African Centre for Crop Improvement, South Africa Hussein A Shimelis --- African Centre for Crop Improvement, South Africa Mark D Laing --- African Centre for Crop Improvement, South Africa Kebebew Assefa --- Debre-Zeit Agricultural Research Centre, EthiopiaDrought stress is one of the major abiotic constraints affecting production and productivity of tef (Eragrostis tef). Genetic resources and selection methodologies are among the prerequisites to improve the efficiency of breeding for drought tolerance. The objectives of this study... -
Genotypic variation in tree growth and selected flavonoids in leaves of Cyclocarya paliurus
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Yanni Cao --- College of Forestry, China Bo Deng --- College of Forestry, China Shengzuo Fang --- College of Forestry, China Xulan Shang --- College of Forestry, China Xiangxiang Fu --- College of Forestry, China Wanxia Yang --- College of Forestry, ChinaCyclocarya paliurus is a valuable medicinal tree species in China. However, limited information is available on its genotype selection and cultivation for improvement of growth and health-promoting phytochemicals. To contribute to improved knowledge of the potential use of the species,... -
Morphometric characterisation of Scutellonema bradys populations from the Guinea Savanna and Transitional Rain Forest ecological zones of Ghana
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Seloame Tatu Nyaku --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Yahaya Saaka Jamani --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Eric Cornelius --- Department of Crop Science, College of Basic and Applied Sciences, Ghana Hanif Lutuf --- Department of Crop Science, College of Basic and Applied Sciences, GhanaYam (Dioscorea spp.) forms a large portion of Ghanaian diets and is cultivated in most regions. However, yam is highly susceptible to parasitism by the yam nematode, Scutellonema bradys. Ten major yam communities from 10 districts (Yendi, Karaga, East Gonja,... -
A theoretical framework for airport-centric developments: The cases of OR Tambo and Cape Town international airports in South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Masilonyane Mokhele --- Department of Town and Regional Planning, Faculty of Informatics and Design, South Africa Hermanus S. Geyer --- Department of Geography and Environmental Studies, Centre for Regional and Urban Innovation and Statistical Exploration (CRUISE), South AfricaWith a wealth of valuable literature, airports are a topical subject matter on the nexus between transportation technology advancements and land use. While acknowledging the insights of literature, it is argued that improvements are required on the theoretical framework for... -
Latent structure of the Post-Traumatic Stress Disorder (PTSD) Checklist for DSM-5 (PCL-5) in South African mortuary workers
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Malose Makhubela --- Department of Psychology, South AfricaThis study applied confirmatory factor analysis (CFA) to determine the dimensionality of PTSD symptoms as measured by the Post-Traumatic Stress Disorder Checklist for DSM-5 (PCL-5, Weathers et al., 2013). Participants were 150 trauma-exposed mortuary workers. Six alternative factor solutions resulted... -
Genetic diversity and population connectivity of the sea urchin Tripneustes gratilla along the South African coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Brink --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa R Dale Kuys --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa C Rhode --- Molecular Breeding and Biodiversity Group, Department of Genetics, South Africa BM Macey --- Branch: Fisheries Management, Department of Agriculture, South Africa KW Christison --- Branch: Fisheries Management, Department of Agriculture, South Africa R Roodt-Wilding --- Molecular Breeding and Biodiversity Group, Department of Genetics, South AfricaThe collector sea urchin Tripneustes gratilla has been identified as a species with potential for aquaculture production in South Africa. The species’ roe is considered a culinary delicacy in Asia and Europe. However, T. gratilla remains genetically uncharacterised in South... -
Sensitivity of selected chemical and biological soil quality parameters to tillage and rotational cover cropping at the Zanyokwe Irrigation Scheme, South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Arnold N Njaimwe --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pearson NS Mnkeni --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Pardon Muchaonyerwa --- School of Agricultural, Earth and Environmental Sciences, South Africa Cornelius Chiduza --- Department of Agronomy, Faculty of Science and Agriculture, South Africa Isaiah IC Wakindiki --- Department of Agronomy, Faculty of Science and Agriculture, South AfricaSustainable management of soils requires knowledge of the impact of agronomic practices such as tillage and crop rotation on soil quality. The objective of this study was to identify soil chemical and biological soil attributes with high sensitivity to tillage... -
Assessment of genetic diversity among low-nitrogen-tolerant early generation maize inbred lines using SNP markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Sam O Ajala --- International Institute of Tropical Agriculture, Nigeria Muyideen O Olayiwola --- International Institute of Tropical Agriculture, Nigeria Oluyinka J Ilesanmi --- International Institute of Tropical Agriculture, Nigeria Melaku Gedil --- International Institute of Tropical Agriculture, Nigeria Anthony O Job --- International Institute of Tropical Agriculture, Nigeria Amudalat B Olaniyan --- Department of Agronomy, NigeriaLow soil nitrogen (low-N) level is responsible for yield reduction in maize (Zea mays L.) fields in sub-Saharan Africa. A clear understanding of the genetic diversity among early generation inbred lines selected from various elite low-N- tolerant populations offers an... -
A bibliometric analysis of the research on shot peening
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Shijun Chen --- Faculty of Engineering and the Built Environment, South Africa Dawood A. Desai --- Faculty of Engineering and the Built Environment, South Africa Stephan Philippus Heyns --- Faculty of Engineering and the Built Environment, South Africa Francesco Pietra --- School of Mechanical, Industrial and Aeronautical Engineering, South AfricaA bibliometric analysis of shot peening was carried out to provide insights into academic activities and trends of the research on surface treatment processes from 1997 to 2017 based on the publications collected from the database Science Citation Index. The... -
Assessment of heavy metals pollution in surface and groundwater systems in Oued Righ region (Algeria) using pollution indices and multivariate statistical techniques
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: ML Benhaddya --- , Algeria Y Halis --- , Algeria B Hamdi-Aïssa --- , AlgeriaSurface and groundwater samples of the Oued Righ region (south-eastern Algeria) were analysed for Cd, Cr, Cu, Mn, Ni, Pb and Zn by atomic absorption spectrophotometric method. An integrated approach of pollution evaluation indices and multivariate statistical methods (one-way ANOVA,... -
Open development and scaling-up of clustered enterprises in Nigeria’s informal sector
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Oluseye Oladayo Jegede --- , South AfricaThis study outlined how the microenterprises overcome numerous challenges common to start-up through ‘open development’ characterized by collective sharing of knowledge, tools, equipment and workforce amongst competing microenterprises, and belonging to trade/professional associations that ensure that knowledge becomes a public... -
Discovering the research focus of higher academic institutions
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olufunke Oladipupo --- , Nigeria Ibukun Afolabi --- , Nigeria Stephen Adubi --- , Nigeria Olaperi Sowunmi --- , NigeriaThe research focus of an institution indicates the academic strength of the institution. This academic strength goes a long way to determine the quality of academic product expected from such an institution. To this effect, this study aims at analyzing... -
Innovative reworkings of ancestor ritual as a response to forced villagisation: an Eastern Cape example
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Chris J. de Wet --- , South Africa Eric A. Mgujulwa --- , South AfricaIn the mid-1960s, the people of the rural settlement of Cata in the Keiskammahoek district of the then Ciskei bantustan were moved by the apartheid government’s “betterment planning” programme, from their small patrilineal-kinship-based residential clusters into larger, more concentrated residential... -
Developing a satellite-based frost risk model for the Southern African commercial forestry landscape
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Riyad Ismail --- , South Africa Jacob Crous --- , South Africa Giovanni Sale --- , South Africa Andrew Morris --- , South Africa Kabir Peerbhay --- , South AfricaFrost is a sporadic meteorological event affecting the productivity of commercial forests in South Africa. Severe frost occurrences may cause irreversible damage to forest stands, slowing down tree growth or leading to tree mortality. Using the Moderate Imaging Spectrometer (spatial... -
From suppliers to nodes in global value chains: An upgradation of the ICT cluster of Pakistan through regional and national innovation systems.
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Iffat B. Naqvi --- , Pakistan Zahid Ali Memon --- , Pakistan Wahid Bux Mangrio --- , PakistanThe bottom-level weaker position of developing countries industrial clusters in GVCs make them prone to the threats of non-compliance of international standards and power dominance by lead firm in GVCs as empirically evident from the traditional industrial clusters of Pakistan... -
The effects of cluster collaboration and the utilization of big data on business performance: A research based on the expansion of open innovation and social capital
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Joon-ho Kim --- , Republic of Korea Yae-ri Kim --- , Republic of Korea Seung-hye Jung --- , Republic of Korea Hyun-ju Choi --- , Republic of Korea June-hyuk Kwon --- , Republic of KoreaThis study examines the influence of firm cluster collaboration and the utilization of big data on the expansion of open innovation. We also investigate the effect of open innovation on business performance and test the moderating effect of social capital... -
A typology of social entrepreneuring models continued: Empirical evidence from South Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Alex Bignotti --- University of Pretoria, South Africa Kerrin Myres --- Gordon Institute of Business Science (GIBS), University of Pretoria, South AfricaThere have been calls in social entrepreneurship research to move beyond conceptual arguments and to ground definitions and conceptualizations of this field in empirical research, especially pertaining to the developing world. Owing to the socially embedded nature of social enterprises,... -
Microfoundations of technology cluster emergence in emerging economies: Mindsets of natives and non-natives in Johannesburg, South Africa
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Brett Anitra Gilbert --- , USAWhere technology clusters are concerned, extant research has primarily highlighted those that are situated in developed economies. The literature shows that immigrants – those who have moved to a region from other places – have been instrumental in the technology... -
PrEP retention predictors among key populations in urban areas of Zimbabwe — a machine learning approach
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Bridgette Bero --- National University of Science and Technology, Zimbabwe Chipo Zidana --- Botswana International University of Science and Technology, Botswana Sarudzai Portia Showa --- National University of Science and Technology, ZimbabwePre-exposure prophylaxis (PrEP) success depends on adherence and hence retention in care. It is vital to find factors that affect PrEP retention to make this HIV-prevention method successful. The main objectives of this study were to identify the major determinants... -
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... -
Measuring South Africa destination loyalty levels through recommending and complaining framings
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Concepción Román --- Institute of Tourism and Sustainable Economic Development, Universidad de Las Palmas de Gran Canaria, Juan Carlos Martín --- Institute of Tourism and Sustainable Economic Development, Universidad de Las Palmas de Gran Canaria, Engelina du Plessis --- North-West University, South AfricaThe study aims to analyse how framing (recommending versus complaining) affects the measurement of destination loyalty. It focuses on international tourists who visited South Africa, and evaluated loyalty through the two framings. The study tests whether loyalty can be measured... -
Assessing the systemic risk in Rwandan banking sector using clustering approach
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Patrick Mugenzi --- University of Rwanda, Rwanda Annie Uwimana --- University of Rwanda, RwandaThis article assessed the dynamics of homogeneity (similarities) among banks in Rwanda from 2017 to 2021 by utilizing agglomerative clustering techniques on a detailed breakdown of the banking system’s balance sheet structure. Specifically, we analyzed homogeneity in the banks’ portfolios,...