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Performance of Medicago sativa under dryland conditions on the eastern Highveld
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: N F G Rethman --- Department of Plant Production, J J Odendaal --- Department of Agriculture & Water Supply, Transvaal Region, C C De Witt --- Department of Agriculture & Water Supply, Transvaal Region,Increased livestock numbers and improved animal performance based on dryland lucerne pastures requiring little or no nitrogenous fertilizer have been demonstrated to be feasible on the eastern Highveld. With large scale planting of lucerne‐based pasture (25% of arable land) 350... -
Methods of presenting intercropping results and preliminary results with Zea mays and Phaseolus vulgaris
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.N. Austin --- Department of Agronomy, J.N. Marais --- Department of Agronomy,Replacement intercropping trials with maize and dry beans were conducted to provide information which could lead to a cropping strategy that would reduce the risk of rainfed crop production in the Ciskei. Attention is focused on the problem of analysing... -
Die invloed van bemestingplasing op wortelontwikkeling van mielies
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. du Toit --- , Republiek van Suid-AfrikaVier behandelings waar bemesting op verskillende dieptes geplaas is, asook 'n geen-bemestingspeil as kontrole, is onder 'n stoppelbewerkingstelsel geëvalueer. Wortelontwikkeling is op drie stadiums gedurende die groeiseisoene ondersoek. Diep plasing van bemesting stimuleer afwaartse wortelontwikkeling, veral gedurende die vroeë vegetatiewe... -
The influence of method of inoculation and certain herbicides on nodulation and seed yield of soybeans
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P.L. Greenfield --- Department of Agronomy, Republic of South AfricaField trials were conducted on soybeans (Glycine max (L.) Merr.) in a hot, dry environment under irrigation and a warm, moist environment on soils on which the crop had not previously been grown. The aim was to assess the effectiveness... -
Fertilizer placement of maize: I. Grain yield and plant growth
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. du Toit --- , Republic of South Africa J.J. Human --- , Republic of South AfricaNormal fertilizer placement, two deeper than normal, broadcast and no fertilizer treatments were compared in a stubble tillage system in the north-western Free State. Plant growth, as indicated by leaf area, leaf dry mass and stem dry mass, was evaluated... -
Fertilizer placement of maize. II. Root growth and water use
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W. du Toit --- , Republic of South Africa J.J. Human --- , Republic of South AfricaNormal fertilizer placement, two placements deeper than normal, a broadcast application and a non-fertilized control were compared to maximize production in a stubble tillage system. Root growth was evaluated at three growth stages from tassel initiation to flowering during the... -
The Design and Evaluation of a Hope Enhancement Programme for Adults
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Charl Pretorius --- University of the North-West, Chris Venter --- University of the North-West, Michael Temane --- University of the North-West, Mariè Wissing --- University of the North-West,The study evaluated the effectiveness of a hope enhancement programme for a group of adults and its impact on general psychological well-being. The intervention programme focused on participants' abilities to set feasible goals, planning ways to reach those goals (pathways)... -
Gender Differences in PTSD diagnostic Criteria and Suicidal Ideation in a South African Police Sample
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Renier Steyn --- University of South Africa,The study examined gender effects on PTSD symptoms to predict of suicidal ideation in a sample of South African police. A male (N = 161) and a female group (N = 56) of South African police officers were assessed by... -
Psychometric Evaluation of The Utrecht Work Engagement Scale (UWES) and Oldenburg Burnout Inventory (OLBI) within a Cement Factory
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Martin Lekutle --- North-West University, Jan Alewyn Nel --- North-West University,This study evaluated the psychometric properties of the Utrecht Work Engagement Scale (UWES) and the Oldenburg Burnout Inventory (OLBI) within a cement factory. Respondents were 187 employees (males =168, females =19) from a cement factory in the North West province... -
Positive Side of the Work-Family Interface: A Theoretical Review
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marissa De Klerk --- North-West University, South Africa Jan Alewyn Nel --- North-West University, South Africa Eileen Koekemoer --- North-West University, South AfricaThis narrative review considers the positive side of the work-family interface. It surveyed a range of relevant literature (1960–2012) using search terms on the positive work-family interface. From the literature it is evident that various concepts (e.g., work-family enhancement, work-family... -
The making of vulnerabilities: understanding the differentiated effects of HIV and AIDS among street traders in Warwick Junction, Durban, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: May Chazan Alan WhitesideThe end of apartheid in South Africa has led to political-economic transition, the deregulation of cities, and increased population mobility, with growing numbers of people living and working in sub-standard and 'informal' urban conditions. These processes have created a fertile... -
Assessment of behavioural risk factors for HIV/AIDS in selected target groups in and around Addis Ababa and Nazareth cities, Ethiopia
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Teshome Nedi --- Department of Pharmacology, Ethiopia Mehret Yerdaw --- Department of Pharmacology, Ethiopia Fikre Enquoselassie --- Department of Community Health, Faculty of Medicine, EthiopiaA stratified cross-sectional survey was conducted on 2 278 people residing in and around Addis Ababa and Nazareth cities to assess the behavioural risk factors in HIV/AIDS in selected target groups from August 2000 to December 2000. The target groups,... -
Evaluation of acoustic transmitter implantation and determination of post-translocation behaviour of largemouth bass Micropterus salmoides in a South African impoundment
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CF Huchzermeyer --- Department of Ichthyology and Fisheries Science (DIFS), South Africa OLF Weyl --- , South Africa PD Cowley --- , South AfricaLargemouth bass Micropterus salmoides are an important angling species that are often displaced during catch-and-release fishing tournaments. The impact of acoustic transmitter implantation on this species and the effect of displacement distance on their behaviour were tested. In April 2010,... -
Initial Spacing of Pinus patula for Maximum Yield of Pulp-wood over a 16-year Rotation
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B. Bredenkamp --- Natal Forestry Research Centre,Analysis of previously published data showed that volume production of Pinus patula on a 16-year rotation reaches a maximum with initial espacements of 2 430 ± 620 stems/ha. Expected volume yields and diameters for a range of espacements are provided. -
The Silvicultural Treatment of Eucalypt Plantations in Southern Africa
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R.J. Poynton --- Department of Water Affairs, Forestry and Environmental Conservation,Approximately 500 000 ha has been afforested in Southern Africa with Eucalyptus spp.—principally E. grandis—for the production of mining timber, pulpwood, rough building and fencing materials and fuel on a short rotation of 6 to 10 years, for telegraph and... -
Early Respacement and Fewer Thinnings can Increase Profitability of Coniferous Sawtimber Production
Item type: Journal Article • Journal: South African Forestry Journal • Authors: B.V. Bredenkamp --- Natal Forestry Research Centre, J. S.J. Venter --- , H. Haigh --- Natal Forestry Research Centre,A pine sawtimber production regime using wider initial spacing, early respacement, fewer thinning operations and a shortened rotation is proposed. The proposal is compared with a commonly accepted regime for ranges of interest rates and pulpwood prices. Benefits are lowered... -
HIV behavioural surveillance among refugees and surrounding host communities in Uganda, 2006
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Kathleen McDavid Harrison Johanna Claass PaulB Spiegel Judith Bamuturaki Njogu Patterson Michael Muyonga Lillian TatwebwaWe used a standardised behavioural surveillance survey (BSS), modified to be directly relevant to populations in conflict and post-conflict settings as well as to their surrounding host populations, to survey the populations of a refugee settlement in south-western Uganda and... -
Implications for seabirds off South Africa of a long-term change in the distribution of sardine
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RJM Crawford PS Sabarros T Fairweather LG Underhill AC WolfaardtFrom 1997 to 2005, the distribution of sardine Sardinops sagax, an important prey item for four seabirds off South Africa, shifted 400 km to the south and east, influencing its availability to breeding birds. It became progressively less available to... -
Evaluating seal–seabird interactions in southern Africa: a critical review
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP KirkmanThrough predation and displacement, the Cape fur seal Arctocephalus pusillus pusillus poses a threat to several seabird species that breed in southern Africa. Measures such as the culling of 'problem' seals have been introduced to negate the effects on these... -
Management of diabetic ketoacidosis
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: D Jivan --- Department of Medicine, Division of Endocrinology and Metabolism,Although the mortality of diabetic ketoacidosis (DKA) has decreased substantially in the developed world, high mortality rates still prevail in South Africa, thus making this an important condition to recognise early and manage well. This review discusses the treatment of... -
Positive maternal and foetal outcomes after cardiopulmonary bypass surgery in a parturient with severe mitral valve disease
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: GT Mokgwathi --- Department of Anaesthesiology, EM Lebakeng --- Department of Anaesthesiology, GA Ogunbanjo --- Department of Family Medicine and Primary Health Care,This case study describes the successful management of a parturient with severe mitral stenosis and moderate mitral regurgitation who underwent cardiopulmonary bypass (CPB) surgery. A healthy baby was delivered by Caesarean section 11 days later. The effects of CPB surgery... -
The use of lumbar X-rays to facilitate neuraxial anaesthesia during knee replacement surgery in patients who have had previous spinal surgery
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: AP Coetzer --- , RVP De Villiers --- Drs Van Wageningen and Partners,Background: Knee replacement surgery is an operation that is performed on older patients, with a few exceptions. Many of these patients have co-existing diseases and have had previous surgery, of which lumbar spinal surgery is of particular relevance. Neuraxial anaesthesia... -
Nicotine-replacement therapy: a proven treatment for smoking cessation
Item type: Journal Article • Journal: South African Family Practice • Authors: N Robson --- Department of Primary Care Medicine, Faculty of Medicine, MalaysiaSmoking is a major cause of cardiovascular diseases, respiratory diseases and cancer. Despite the high prevalence of smokers worldwide, smokers are often neglected and not offered effective assistance with quitting their habits. In order to overcome this public health burden,... -
Evaluating the rural health placements of the Rural Support Network at the Faculty of Health Sciences, University of Cape Town
Item type: Journal Article • Journal: South African Family Practice • Authors: CS Naidu --- Primary Healthcare Directorate, Faculty of Health Sciences, J Irlam --- Primary Healthcare Directorate, Faculty of Health Sciences,Objectives: The Rural Support Network (RSN) is an undergraduate student society that aims to raise awareness among the student body of the plight of rural health in South Africa, and organises individual and group placements in rural hospitals during vacations... -
Long-term trends in the competitive shore fishery along the KwaZulu-Natal coast, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: P. Pradervand --- Oceanographic Research Institute, South Africa B. Q. Mann --- Oceanographic Research Institute, South Africa M. F. Bellis --- Records Officer, South African Shore Angling Association, South AfricaTwenty-four years (1977–2000) of competitive shore angling catch and effort data from the KwaZulu-Natal Coastal Anglers Union for the province of KwaZulu-Natal were analysed. Of a minimum of 117 species recorded, the most commonly caught species were dusky shark (Carcharhinus... -
A case of natural queen succession in a captive colony of naked mole-rats, Heterocephalus glaber
Item type: Journal Article • Journal: African Zoology • Authors: L. A. van der Westhuizen --- Department of Zoology, South Africa J. U. M. Jarvis --- Department of Zoology, South Africa N. C. Bennett --- Department of Zoology & Entomology, South AfricaNaked mole-rats occur in large colonies where usually a single queen monopolizes reproduction. Queen succession occurs from within usually as a result of aggressive encounters with subordinate females that queue for reproductive succession following colony instability, which inevitably results in... -
The conflict between industry hosts and master’s degree students’ expectations on students entering the hospitality industry
Item type: Journal Article • Journal: • Authors: Rajka Presbury --- Blue Mountains International Hotel School, Sydney, Australia Janette Illingsworth --- Blue Mountains International Hotel School, Sydney, Australia Scott Richardson --- Blue Mountains International Hotel School, Sydney, AustraliaThis paper reports on a qualitative study that sought to determine Australian industry hosts’ expectations and perceptions of hotel management master’s degree students on their placement in the industry, and the expectations of students when entering industry placement. The empirical dataset for... -
Auditing poverty? Applied anthropologists and the discourse of development in post-apartheid South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Teresa Connor --- Fort Hare Institute of Social and Economic Research, University of Fort Hare, South AfricaThis article debates the opportunities and disadvantages attached to applied anthropology, specifically consultancy linked to development work, within the institutions and processes of the modern neo-liberal state. Located within political and applied anthropology, the article uses insights gained from two... -
Reconsidering displacement in southern Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Chris de Wet --- Department of Anthropology, South AfricaIn the light of developments in the southern African region over the last number of years, the paper argues for a reconsideration, and an extension, of the way in which the concept of ‘displacement’ has conventionally been understood. It considers... -
Decency and exclusion: a symbolic interpretation of post-displacement discriminatory discourse in De Doorns, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Nicola M. Hugo --- University of Stellenbosch, South AfricaFrom 14–17 November 2009 an estimated 3000 Zimbabweans were violently and forcefully displaced from their dwellings in a rural farming area, De Doorns, in the Western Cape, South Africa. This study looks into a discourse of decency to contribute, through... -
Ekerekeia nom. nov., a replacement name for Farquharsonia Currie, 1928 (Echinodermata: Euechinoidea), preoccupied by Farquharsonia Collin, 1922 (Insecta: Diptera)
Item type: Journal Article • Journal: African Zoology • Authors: Hüsey¥n Özd¥kmen --- Department of Biology, Science and Arts Faculty, Turkey Abel Udo Udoh --- Department of Biology, TurkeyA junior homonym was detected among fossil echinoid genera and the following replacement name is proposed: Ekerekeia nom. nov. for Farquharsonia Currie, 1927 (nec Collin, 1922). Accordingly, new combinations are herein proposed for the species currently included in this genus:... -
Space radiation environment of ALSAT-2 and its degradation effect on InGaP/InGaAs/Ge solar cells
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Nadjima Benkara Mohammed --- Department of Sciences and Techniques, Faculty of Sciences and Technology, Algeria Souaad Benkara Mahammed --- Department of Electrical and Computer Engineering, Faculty of Engineering, MalaysiaSurrounding the earth, and throughout outer space, significant levels of radiation particles exist. These particles include protons, electrons, heavy ions, and other forms of radiation. Different regions are known to contain different amounts of various types of particles with different... -
Taxpayers’ attitudes towards tax amnesties and compliance in South Africa: an exploratory study
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: S. V. Junpath --- Faculty of Accounting & Informatics, South Africa M. S. E. Kharwa --- Faculty of Accounting & Informatics, South Africa L. J. Stainbank --- Faculty of Accounting & Informatics, South AfricaSouth Africa has seen tremendous changes since 1994, from the introduction of a new government to structural changes in tax administration. One of the challenges the government faced in the new democracy was the restructuring of the tax system. Multiple... -
The conflict between industry hosts and master's degree students' expectations on students entering the hospitality industry
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Rajka Presbury --- Blue Mountains International Hotel School, Australia Janette Illingsworth --- Blue Mountains International Hotel School, Australia Scott Richardson --- Blue Mountains International Hotel School, AustraliaThis paper reports on a qualitative study that sought to determine Australian industry hosts' expectations and perceptions of hotel management master's degree students on their placement in the industry, and the expectations of students when entering industry placement. The empirical... -
Achieving preferred customer status in the Dutch plastics recycling industry
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Klaes Eringa --- Stenden Hotel Management School, The Netherlands Rink Groenveld --- School of Commerce, The NetherlandsThe aim of this research is to gain insight into the aspects and processes in the Dutch plastic recycling industry which might lead to a preferred customer status and acquiring benefits once the status has been reached. The whole process... -
Antecedents of flourishing at work in a fast-moving consumer goods company
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cindy Rautenbach --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South AfricaThe aims of this study were to investigate antecedents of flourishing in the workplace. A cross-sectional survey design was used with a stratified random sample of 779 employees in a fast-moving consumer goods company in South Africa (females = 40.4%,... -
Methylphenidate use among students living in junior on-campus residences of the University of the Free State
Item type: Journal Article • Journal: South African Family Practice • Authors: PM Van Zyl --- Department of Pharmacology, South Africa G Joubert --- Department of Biostatistics, South Africa L Fechter --- School of Medicine, South Africa J Griesel --- School of Medicine, South Africa M Nel --- School of Medicine, South Africa A Honiball --- School of Medicine, South Africa L Serfontein --- School of Medicine, South Africa M Diedericks --- School of Medicine, South AfricaBackground: The use of methylphenidate as cognitive enhancer is a growing trend among students at tertiary institutions globally. This study aimed to determine the prevalence of methylphenidate use and co-use with alcohol among on-campus residence students of the University of... -
SAFRING longevity and movement records for southern African vultures (subfamilies Aegypiinae and Gypaetinae)
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Dane M Paijmans --- Animal Demography Unit, Department of Biological Sciences, South Africa Sarah Catto --- Animal Demography Unit, Department of Biological Sciences, South Africa H Dieter Oschadleus --- Animal Demography Unit, Department of Biological Sciences, South AfricaLongevity and displacement records aid in the understanding of animal senescence and the possible range of a species. Within wild populations this information is infrequent with most longevity reports being based on captive individuals and displacements being calculated from few... -
Psychometric validation of the Flourishing-at-Work Scale – Short Form (FWS-SF): Results and implications of a South African study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Cindy Rautenbach --- Optentia Research Focus Area, South Africa Sebastiaan Rothmann --- Optentia Research Focus Area, South AfricaThe aim of this study was to validate the Flourishing-at-Work Scale Short Form (FWS-SF) in a South African fast-moving consumable goods industry. Participants were a stratified random sample of 779 employees of an alcoholic beverage company (female = 40.4%, black... -
Investigation of the properties and production of sawdust ceiling tile using polystyrene as a binder
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Pius Bamidele Mogaji --- Department of Mechanical Engineering, Nigeria Sesan Peter Ayodeji --- Department of Mechanical Engineering, Nigeria Ayodeji David Olatise --- Department of Mechanical Engineering, Nigeria Isiaka Oluwole Oladele --- Department of Material and Metallurgical Engineering, NigeriaIn this research, a production and properties investigation of wood sawdust ceiling tile using polystyrene as a binder was carried out. The content by weight of the wood sawdust was 5, 10, 15, 20, 25 and 30% consisting of three... -
Functionally graded metal matrix composite by centrifugal casting technique mathematical correlation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Williams S. Ebhota --- Discipline of Mechanical Engineering, South Africa Freddie L. Inambao --- Discipline of Mechanical Engineering, South AfricaThe functionally graded materials (FGMs) solidification process has complicated movement phenomena of fluid, solute and heat. These phenomena control the segregation of particles in a molten matrix, interactions of particles with a solidification front and the integration of particles in... -
Reading the Trauma of Internally Displaced Identities in Goretti Kyomuhendo’s Waiting
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Nick Mdika Tembo --- Department of English Studies, Stellenbosch University, South Africa and the Department of English, MalawiOne of the effects of violent conflicts in East Africa is that millions of people have either been internally displaced or forced to leave their homes and set up other homes elsewhere. In this article I focus on Goretti Kyomuhendo’s... -
Discursive hauntings: limits to reinvention for Zimbabwean farm workers after fast-track land reform
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Andrew Hartnack --- Sustainable Livelihoods Foundation, South AfricaScholars of Zimbabwe’s agrarian milieu since the “fast-track land-reform” in 2000 are increasingly suggesting that the label “farm worker” is no longer a relevant or accurate term for referring to former workers now living in resettlement areas. While many former... -
A liabilities approach to the likelihood of liquidation in business rescue
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Wesley Rosslyn-Smith --- Department of Business Management, South Africa Marius Pretorius --- Department of Business Management, South AfricaWhile reorganisation procedures aim to salvage financially distressed firms, they are often abused, as uneconomic, failing firms commence with proceedings that erode value rather than preserve it. The commencement standard for business rescue is aimed at preventing such abuse, though... -
The persistence of firm-specific post-earnings announcement returns
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Dong Hyun Son --- College of Business, Korea Dan Palmon --- Department of Accounting and Information System, New Jersey Ari Yezegel --- Department of Accountancy, USAThis paper examines whether estimates of post-earnings-announcement returns derived from the historical firm-specific relation between earnings and returns help predict future post-earnings-announcement returns. We find that firms with historically high post-earnings announcement returns continue to exhibit high post-earnings announcement returns... -
Quality Assurance of Business Management Education in Africa: A Review of Current Systems and Recommendations for Quality Enhancements
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Eunice V. Akoto --- School of Business, USA Edward O. Akoto --- School of Business, USAQuality assurance systems – the collections of policies, procedures, and practices for achieving and maintaining quality – are critical to ensuring the relevance and effectiveness of business and management education in Africa. Currently, stakeholders may assess the quality of business... -
Automation and employment: The case of South Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Daniel B. le Roux --- Cognition and Technology Research Group, South AfricaIn the two centuries since the Industrial Revolution technological progress has had a major impact on the types of work humans perform. The invention of increasingly advanced machinery decreases, on one hand, the need for certain forms of manual labour... -
Job demands and resources: Flourishing and job performance in South African universities of technology settings
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Christine Janse van Rensburg --- Human Resource Management, South Africa Sebastiaan Rothmann --- Optentia, North-West University, South Africa Elsabé Diedericks --- Optentia, North-West University, South AfricaWe investigated the extent to which perceived job demands and resources influenced work-related flourishing and job performance among academic staff in South African universities of technology. Participants were 339 lecturers from three universities of technology (female = 53.8%; junior lecturers... -
Cold storage for low-cost air-conditioning
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Daniel M. Madyira --- Department of Mechanical Engineering Science, South AfricaBuilding heating, ventilation and air-conditioning (HVAC) consumes 50% of the building energy consumption. Such high costs are based on the conventional HVAC cycles for air cooling based on grid connected buildings. However, there are alternative passive and active cold storage... -
Pozzolanic and hydration properties of kamafugites and carbonatitic lavas as supplementary cementitious materials in Portland cement
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: A. Buregyeya --- School of Civil and Environmental Engineering, South Africa S. Nwaubani --- School of Civil and Environmental Engineering, South Africa W. Schmidt --- BAM Federal Institute for Materials Research and Testing, Germany A. G. Kerali --- Department of Civil and Environmental Engineering, Uganda U. Bagampadde --- Department of Civil and Environmental Engineering, UgandaKamafugites and carbonatites, being materials of volcanic origin with carbonates as their primary minerals, are relatively low in silica and alumina saturation. Their silica and alumina under-saturation is considered a limiting factor in pozzolanic reactivity; however, these materials are currently... -
When life's good: Gendered marital satisfaction and work-pay satisfaction influences on organisational commitment of advancement-career-stage employees
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Chibuzor Uchenna Onuoha --- Population & Health Research Entity, Faculty of the Human Sciences, South Africa Erhabor Sunday Idemudia --- Population & Health Research Entity, Faculty of the Human Sciences, South AfricaWe examined the influences of marital satisfaction and work-pay satisfaction on organisational commitment among advancement-career-stage employees while controlling for gender and a selection of socio-demographics. The sample consisted of 350 workers (females = 237; mean age = 32.44, SD =... -
The development of soft skills during internships: The hospitality student’s voice
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Erwin Losekoot --- NHL Stenden University of Applied Sciences, The Netherlands Earney Lasten --- RMIT University, Vietnam Anne Lawson --- Auckland Institute of Studies, New Zealand Beverly Chen --- Auckland Institute of Studies, New ZealandThis paper considers the value of industrial placements in providing an opportunity for hospitality students to develop soft skills in the workplace in addition to the technical skills learned at their educational establishments. While there are concepts such as “problem-based... -
Wives’ career progression among dual-career ethno-cultural couples: Husbands’ perspectives
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Sumaiyah Fuad Mohamed --- Department of Human Resource Management, South AfricaThis study explored the perspectives of husbands regarding the participation of their wives in professional occupations. The participants included nine South African Indian men in dual-career marriages (ages ranging from 25 to 54 years old). The completed semi-structured, life-story interviews... -
Timing information, SEC enforcement intensity and illegal insider trading
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Han-Ching Huang --- Department of Finance, TaiwanThis paper explores the difference between illegal insider trading around scheduled and unscheduled corporate announcements. Moreover, this paper also examines whether the underlying option has impacted on trading patterns of illegal insider trading around corporate announcements. I find that the... -
Inventory of kiln stacks emissions and health risk assessment: Case of a cement industry in Southwest Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Solomon O. Giwa --- Department of Mechanical Engineering, Nigeria Collins N. Nwaokocha --- Department of Mechanical Engineering, Nigeria Abayomi T. Layeni --- Department of Mechanical Engineering, NigeriaCement production is a significant source of air pollution as both gaseous and particulate materials released are detrimental to the ecosystem. This work was carried out in a cement industry located in Southwest Nigeria. The emission rates of carbon monoxide... -
Materials and technology solutions to tackle the challenges in daily concrete construction for housing and infrastructure in sub-Saharan Africa
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Wolfram Schmidt --- Department 7: Safety of Structures Bundesanstalt für Materialforschung und -prüfung (BAM), Germany Nsesheye Susan Msinjili --- Department 7: Safety of Structures Bundesanstalt für Materialforschung und -prüfung (BAM), Germany Hans-Carsten Kühne --- Department 7: Safety of Structures Bundesanstalt für Materialforschung und -prüfung (BAM), GermanySub-Saharan Africa's economic rise has caused a high demand for housing and infrastructure. This rapid growth has resulted in urgent challenges of enormous dimensions for urban and infrastructural planners and the entire construction sector. Considering the African supply chains and... -
Environmental benefits of corn cob ash in lateritic soil cement stabilization for road works
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Olanrewaju A. Apampa --- Department of Civil Engineering, NigeriaThe potential environmental benefits of corn cob ash (CCA) as pozzolan in stabilizing soils for road construction was investigated. Corn cob obtained from Maya in South West Nigeria was processed to ash similar to Class C Fly Ash and blended... -
Opportunities for improved sustainability in house building: The case of Dar es Salaam
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Raine Isaksson --- Department of Engineering Sciences, Sweden Oluwayomi Babatunde --- School of Construction Economics and Management, South AfricaThe combination of a growing population and economic development in Africa will form strong drivers for building growth. Buildings drive energy consumption and carbon emissions. On the material side, cement is the driver for cost and carbon emissions. A cement... -
Progress research on earth construction: Cast earth with glass wastes, cement kiln bypass dust and activated clay
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Hanaa Youssef Ghorab --- Chemistry Department, Faculty of Science, Egypt Amr Said Meawad --- Chemistry Department, Faculty of Science, Egypt Mehmet Yildirim --- Customer Support Department, Suez Cement Company, Egypt Ahmed Hassan Eied Hassan --- Chemistry Department, Faculty of Science, EgyptA sandy soil was stabilized by 10% CEM I 42.5 R. Up to 50% of the cement was replaced by waste glass powder, cement kiln bypass dust or activated clay. Polynapthalene sulfonate superplasticizer was used to increase the fluidity of... -
Acute changes in haematocrit leading to polycythaemia in late-onset hypogonadism patients that receive testosterone replacement therapy: a South African study
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Jesslee du Plessis --- Medicine Usage in South Africa (MUSA), North-West University, South Africa Hermanus Lambertus Bester --- Private Hospital, Emalahleni, South Africa, Marlene Julyan --- Medicine Usage in South Africa (MUSA), North-West University, South Africa Marike Cockeran --- School for Computer, Statistical and Mathematical Sciences, North-West University, South AfricaBackground: According to the literature, parenteral testosterone replacement therapy (TRT)-induced polycythaemia is associated with cardiovascular events. No or minimal data exist for the prevalence of TRT-induced polycythaemia in late-onset hypogonadism (LOH) patients from South Africa. Polycythaemia is the side effect... -
Implications of geographical range changes and resultant sympatry for three Accipiter hawks on the Cape Peninsula, South Africa
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Robin M Little --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Rene A Navarro --- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaSome invasive species are known to compete with and even displace indigenous species. Two Accipiter species historically indigenous to eastern South Africa have colonised the Cape Peninsula in the south-west of the country and have become sympatric with a third... -
Hierarchical ranking of Urochloa mosambicensis (Bushveld herringbone grass) and Urochloa panicoides (Herringbone grass) competitiveness in four soil environments
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Maryke Craven --- Agricultural Research Council–Grain Crops, South Africa Patrick T Mokoena --- Agricultural Research Council–Grain Crops, South Africa Marlene M van der Walt --- Agricultural Research Council–Grain Crops, South Africa Liesl Morey --- Agricultural Research Council–Biometry, South Africa Anna EJ Saayman du Toit --- Agricultural Research Council–Grain Crops, South AfricaKnowledge of the competitive ability of weeds provide a better understanding of the requirements for weed control. The competitive ability of Urochloa mosambicensis (Hack.) Dandy. (Bushveld herringbone grass) and U. panicoides P. Beauv. (Herringbone grass) was investigated during 2017/18 in... -
Mom’s taxi – Maternal care in shovel-nosed frogs Hemisus marmoratus and Hemisus guttatus
Item type: Journal Article • Journal: African Zoology • Authors: K Kyle --- Unit for Environmental Sciences and Management, South Africa LH du Preez --- Unit for Environmental Sciences and Management, South AfricaThis communication details the maternal care of Hemisus marmoratus and Hemisus guttatus. A Hemisus mother stays with the eggs, protecting them during their time in the nest chamber, and ensures their ultimate arrival in a body of water, at varying... -
Ecosystem service values of sediment generation and entrapment by marginal coral reefs at Sodwana Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SCS Laing --- , South Africa MH Schleyer --- , South Africa JK Turpie --- , South AfricaCoral reefs provide a multitude of goods and services, some of which are difficult to value due to their intangible nature and the absence of markets to ascribe their relative worth. The coral reefs of Sodwana Bay on the northeast... -
Pre-displacement stressors, psychological morbidity, and PTSD symptoms among displaced women by Boko-Haram in North-East Nigeria: The buffering roles of psychological capital
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Erhabor S. Idemudia --- , South Africa Babatola D. Olawa --- , South Africa Gail E. Wyatt --- , USA Norweeta Milburn --- , USAWe utilised a cross-sectional survey design to examine the moderating roles of dimensional psychological capital (PsyCap) and pre-displacement stressors on the relationship between psychological morbidity and severity of PTSD symptoms among internally displaced (IDP) women from terrorist activity. Participants were... -
Violence of science and development: Withering away of the displaced Van Gujjars in and around Rajaji National Park, Uttarakhand
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Prerna Sah --- , India Sambit Mallick --- , IndiaThis paper examines the displacement of the semi-nomadic pastoral community of the Van Gujjars from the Protected Area of Rajaji National Park, displacement falling under the rubric of ‘development-induced displacement’. The study carried out was based on qualitative data collection... -
Movements and growth rates of the broadnose sevengill shark Notorynchus cepedianus in southern Africa: results from a long-term cooperative tagging programme
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TM Engelbrecht --- , South Africa AA Kock --- , South Africa MJ O’Riain --- , South Africa BQ Mann --- , South Africa SW Dunlop --- , South Africa A Barnett --- , AustraliaTop predators are important components of healthy ecosystems but are at risk of overexploitation due to insufficient data on life-history characteristics and population dynamics to guide management. We investigated the movements and growth rates of the broadnose sevengill shark Notorynchus... -
Climbing the illusive ladder: Examining female employees’ perceptions of advancement opportunities at a higher education institution
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Maryam Moosa --- , South Africa Mariette Coetzee --- , South AfricaThe study examined how women at a higher education institution in South Africa identify factors they perceive as affecting their advancement opportunities to leadership positions. The study sampled women employees (n = 2 000) working in top management (1%), academic (44.1%), professional... -
Barriers to the success of female leaders in the hospitality industry
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Martina Deiana --- , the Netherlands Chiara Fabbri --- , the NetherlandsThis research analyses gender equality in the hospitality industry in the United Kingdom and Ireland. In particular, this quantitative study focuses on women who could potentially occupy a senior management position, and therefore the aim of this research is to... -
Analysis of farmers’ food price volatility and Nigeria’s growth enhancement support scheme
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Joseph I. Uduji --- , Nigeria Elda Nduka Okolo-Obasi --- , Nigeria Simplice Anutechia Asongu --- , CameroonFood prices in Nigeria have become significantly higher and more volatile since 2012. The purpose of this research was to find out what affects farmers’ participation in the growth enhancement support scheme (GESS) in the country. We determined the effect... -
Death and the sociocultural dimensions of forced relocations: experiences from the Tugwi-Mukosi displacement in Masvingo Province, Zimbabwe
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Hardlife Stephen Basure --- , Zimbabwe Lloyd Nhodo --- , Ghana Charles Dube --- , Zimbabwe Roselyn Kanyemba --- , South AfricaThis article is an ethnographic inquiry into the cultural dimensions of forced relocations. It is based on the experiences of four resident anthropologists on the forced displacements at Tugwi-Mukosi in Masvingo province, Zimbabwe. Using the concept of death, we question... -
The information content of bond rating changes and insider trading in Korea
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Heejin Yang --- , Korea Doowon Ryu --- , KoreaThis study examines differences in insider groups’ trading behaviours based on their characteristics. We use data on high-frequency insider trading and Korean bond rating change announcements. We find that insiders actively exploit their information advantage, and their transaction behaviour differs... -
Zimbabwe's national AIDS levy: A case study
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Nisha Bhat --- , Peter H. Kilmarx --- , Freeman Dube --- , Albert Manenji --- , Medelina Dube --- , Tapuwa Magure --- ,Background: We conducted a case study of the Zimbabwe National AIDS Trust Fund (‘AIDS Levy’) as an approach to domestic government financing of the response to HIV and AIDS. -
The road towards effective governance and management of marine protected areas in South Africa: evolving policies, paradigms and processes
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- , South Africa P Kowalski --- , South Africa BQ Mann --- Oceanographic Research Institute (ORI), South Africa GM Branch --- University of Cape Town, South Africa MG van der Bank --- South African National Biodiversity Institute (SANBI), South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa P Fielding --- , South Africa JB Mann-Lang --- Oceanographic Research Institute (ORI), South Africa MC Pfaff --- University of Cape Town, South Africa D Kotsedi --- , South Africa R Adams --- , South Africa S Dlulisa --- , South Africa SL Petersen --- , MadagascarThe efficacy of marine protected areas (MPAs) depends on their governance and management. We review their history in South Africa and recognise four periods. Period 1 (1964–1994) provided initial protection but was based on exclusionary, preservationist policies, was ad hoc... -
Liberate or obliterate: Women’s leadership in academia
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mariette Coetzee --- University of South Africa, Maryam Moosa --- University of South Africa,Women form a critical component of the workforce of South Africa, yet the retention of women in leadership positions is problematic. This study examined the relationship between leadership opportunities and the retention of women at an open-distance education institution. A... -
Empowering women in South African law enforcement: Developing authenticity as best-self
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Rochelle Jacobs --- University of South Africa, South Africa Antoni Barnard --- University of South Africa, South AfricaThis hermeneutic phenomenological study explored the authenticity experiences of South African women in law enforcement from a best-self perspective. Narrative interviews were conducted with 12 women from police and traffic services, aged between 26 and 55 (25% black, 58% mixed... -
Equity issuance and share price performance on the Johannesburg Stock Exchange
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Dirk Johan van Vuuren --- University of Pretoria, South Africa Michael Ward --- University of Pretoria, South Africa Chris Muller --- University of Pretoria, South AfricaListed companies can acquire capital through a rights issue where existing shareholders have a preference in buying additional shares at a discounted rate, in proportion to their existing holding. When implemented, share prices tend to react to the announcement and... -
Perioperative nutritional management of a Whipple’s patient
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Safiyah Hasson --- Groote Schuur Hospital, South AfricaPancreatic cancers comprise one of the most difficult cancers to diagnose and one of the leading causes of cancer-related deaths in the world.1,2 A 70-year-old male presenting with a head of pancreas malignant mass was referred for nutritional optimisation as... -
Examining the mediating role of support resources in the self-efficacy and career satisfaction relationship among professional women in a developing economy
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ndayiziveyi Takawira --- University of South Africa, South AfricaThis study explored the mediating role of perceived organisational support and social support in the relationship between self-efficacy and career satisfaction among professional women. The participants comprised a non-probability sample of 606 professional women (white = 62%; black women of... -
Debt financing and growth of Ghanaian family-owned businesses: The dual role of family values
Item type: Journal Article • Journal: Africa Journal of Management • Authors: J. K. Dartey --- Doctorate Division, Nobel International Business School, Ghana J. Okeniyi --- Creative Enterprise Department, School of Business and Creative Industry, University of West of Scotland, UK S. E. Samuel --- School of Business, Law and Social Sciences, Abertay University, UK E. Peregrino-Dartey --- Business Administration, Walden University, USA C. Cobblah --- Doctorate Division, Nobel International Business School, GhanaThis study investigates how family values can create finance and growth challenges for family-owned businesses in emerging economies. Specifically, it explores the interplay between family values, debt financing, and firm growth, while also considering the moderating role of self-enhancement and... -
Hospitality 2.0: Applying the UTAUT model to understand guest perspectives on personalised technologies in hotels
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Md Ibrahim --- Noakhali Science and Technology University, Bangladesh Md Jamsedul Islam --- Noakhali Science and Technology University, BangladeshThis study evaluates hotel guest perspectives on adopting personalised technology-enabled hospitality services by using a quantitative survey methodology. Applying unified theory of acceptance and use of technology (UTAUT) model constructs, the questionnaire gauges 200 guest views on performance benefits, usage... -
Sustainable seafood: advances in traceability, assessment, monitoring and resource management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: IG Gleadall --- , Japan A Barkai --- , South Africa Z Lajbner --- Okinawa Institute of Science and Technology Graduate University (OIST), Japan PB McIntyre --- Cornell University, United States H Moustahfid --- National Oceanic and Atmospheric Administration (NOAA), United States P Olsen --- Norwegian Food Research Institute (Nofima), Norway R Oyanedel --- Pontificia Universidad Católica, Chile Y Pang --- University of Washington, United States GJ Pierce --- Instituto de Investigacións Mariñas (IIM-CSIC), Spain L Quesada --- Loyola Marymount University, United States WHH Sauer --- Rhodes University, South Africa L Zifcakova --- Okinawa Institute of Science and Technology Graduate University (OIST), Japan MA Zoral --- Okinawa Institute of Science and Technology Graduate University (OIST), Japan DA Willette --- Loyola Marymount University, United StatesThis review presents a synopsis of advances in some techniques and technologies that support seafood traceability while addressing some of the complexities currently challenging the integration necessary to coordinate commercial, national and international efforts in achieving seafood sustainability. These advances... -
Urban persistence and species interactions: diverging trends in the abundance of Peregrine Falcons Falco peregrinus and Lanner Falcons F. biarmicus across southern Africa using the Southern African Bird Atlas Project
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Kyle T Govender --- School of Life Sciences, University of KwaZulu-Natal, South Africa Mfundo ST Maseko --- School of Life Sciences, University of KwaZulu-Natal, South Africa Alan TK Lee --- School of Life Sciences, University of KwaZulu-Natal, South Africa Colleen T Downs --- School of Life Sciences, University of KwaZulu-Natal, South AfricaCitizen science has emerged as a powerful tool for engaging the public in ecological data collection, crucial for monitoring species’ distributions and abundance over large geographic scales and extended time periods. This study used data from the Southern African Bird... -
Polar Kangaroos of Type E6
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yannick Neyt --- Ghent University, Belgium Hendrik Van Maldeghem --- Ghent University, BelgiumA collineation of a point-line geometry is called a kangaroo if its displacement spectrum has a gap; that is, at least one certain distance smaller than the diameter of the geometry cannot occur between a point and its image. In...
