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Direct hydroacoustic observations of chokka squid Loligo vulgaris reynaudii spawning activity in deep water
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: M. J. Roberts M. Barange M. R. Lipiński M. R. ProwseUnusual and distinct hydroacoustic targets were observed in November 1996, May 1998 and November 1998 during routine pelagic biomass surveys off the south coast of South Africa. During the November 1996 survey, seven such targets were observed near the bottom... -
Risk Factors for Educator-Targeted Bullying: A Social-Ecological Perspective
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Corene de Wet --- University of the Free State, South AfricaThis study investigated educator-targeted bullying (ETB) in a South African school setting from a social-ecological perspective. Seven survivors of ETB were interviewed using open ended questions. The data were content analysed for themes. The main findings of the study were:... -
Comparing macrophyte herbivory by introduced Louisiana crayfish (Procambarus clarkii) (Crustacea: Cambaridae) and native Dytiscid beetles (Cybister tripunctatus) (Coleoptera: Dytiscidae), in Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SadieK Rosenthal DavidM Lodge KennethM Mavuti Wairimu Muohi Philip Ochieng BenjaminN Mungai GeraldM MkojiThe omnivorous Louisiana crayfish, Procambarus clarkii, has caused significant changes to macrophyte communities worldwide and may have similar negative effects in Kenya if used as a biological control agent for snails harbouring human schistosomes. Here we examine how herbivory by... -
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... -
In Situ Measurements of the Acoustic Target Strength of Cape Horse Mackerel Trachurus Trachurus Capensis Off Namibia
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B. E. Axelsen G. Bauleth-D'Almeida A. KanandjemboThe acoustic target strength (TS) of Cape horse mackerel Trachurus trachurus capensis was measured in situ at 38 kHz during two surveys over the Namibian continental shelf in 1998 and 1999 using a SIMRAD EK500 echosounder/ES38D submersible split-beam transducer. Scattered... -
Rapid biological assessment of the fishery potential of Xonxa Dam, near Queenstown, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TJ Richardson AJ Booth OLF WeylRapid biological assessments have been proposed as the most cost-effective approach to identify suitable target species and to set initial catch and fishing effort levels for new fisheries. Xonxa Dam, a turbid irrigation dam situated in the White Kei catchment,... -
Histological changes in the gills of Clarias gariepinus (Teleostei: Clariidae) from a polluted South African urban aquatic system
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JC van Dyk --- Centre for Aquatic Research, Department of Zoology, South Africa MJ Marchand --- Centre for Aquatic Research, Department of Zoology, South Africa GM Pieterse --- Centre for Aquatic Research, Department of Zoology, South Africa IEJ Barnhoorn --- Department of Urology, South Africa MS Bornman --- Department of Urology, South AfricaA semi-quantitative histological assessment was used to investigate histological changes in the gills of Clarias gariepinus from Marais Dam and Rietvlei Dam near Pretoria, which receive effluent from sewage treatment plants and industries, as well as runoff from informal settlements... -
Refined estimates of South African pelagic fish biomass from hydro-acoustic surveys: quantifying the effects of target strength, signal attenuation and receiver saturation
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JC Coetzee D Merkle CL de Moor NM Twatwa M Barange DS ButterworthThe biomass of small pelagic fish species off the coast of South Africa has been monitored since 1984 using hydro-acoustic survey techniques. These time-series of spawner biomass and recruitment estimates form the basis for management of both the South African... -
Alternative approaches to Red-billed Quelea Quelea quelea management: mass-capture for food
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Clive CH Elliott --- Blue Barn House, South Leigh, UK Boaz N Mtobesya --- Plant Health Services, Tanzania Robert A Cheke --- Natural Resources Institute, UKOrganophosphate pesticide spraying or the deployment of explosives as standard practices for controlling quelea breeding colonies or roosts that threaten small-grain crops in Africa have negative side-effects on non-target birds and on the environment. Mass-capture techniques were tested as an... -
Setting glycaemic targets in patients with type 2 diabetes. Where to now?
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: LA Distiller --- Centre for Diabetes and Endocrinology, South Africa -
The implementation of guidelines in a South African population with type 2 diabetes
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Y Pinchevsky --- Department of Pharmacy and Pharmacology, N Butkow --- Department of Pharmacy and Pharmacology, FJ Raal --- Division of Endocrinology and Metabolism, Faculty of Health Sciences, T Chirwa --- Division of Epidemiology and Biostatistics,Objective: The aim of this study was to identify the treatment gaps that pertain to risk factors in South African patients with type 2 diabetes mellitus, using national treatment guidelines. -
The implementation of guidelines in a South African population with type 2 diabetes
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Y Pinchevsky --- Department of Pharmacy and Pharmacology, N Butkow --- Department of Pharmacy and Pharmacology, FJ Raal --- Division of Endocrinology and Metabolism, Faculty of Health Sciences, T Chirwa --- Division of Epidemiology and Biostatistics,Objective: The aim of this study was to identify the treatment gaps that pertain to risk factors in South African patients with type 2 diabetes mellitus, using national treatment guidelines. -
Sedation with alfentanil and propofol for rhizotomies
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: M Jansen van Rensburg --- Anaesthesiology Private Practice, South Africa EC Conradie --- Department of Microbial, Biochemical and Foodbiotechnology, South AfricaBackground: Patient safety during sedation for closed rhizotomies is improved when analgesia is optimised, rather than relying on deep sedation for patient comfort. This retrospective study determined the appropriate effect-site concentration (Ce) for alfentanil, in combination with a constant propofol... -
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... -
Voluntary reporting of financial targets: Motivation and share price reaction
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: W A A Maguire --- Department of Accounting and Finance,This paper examines the impact on share prices on the first occasion on which firms voluntarily report financial targets; specifically target rate of return, target debt-equity ratio and target dividend payout ratio. By reference to estimation risk and signalling theories,... -
The achievement of glycaemic, blood pressure and LDL cholesterol targets in patients with type 2 diabetes attending a South African tertiary hospital outpatient clinic
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Y Pinchevsky --- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, South Africa V Shukla --- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, South Africa N Butkow --- Department of Pharmacy and Pharmacology, School of Therapeutic Sciences, Faculty of Health Sciences, South Africa FJ Raal --- Carbohydrate and Lipid Metabolism Research Unit, Division of Endocrinology and Metabolism, Faculty of Health Sciences, South Africa T Chirwa --- Division of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, South AfricaObjectives: To determine differences in the control of multiple diabetes control parameters in a select group of subjects with type 2 diabetes (T2DM) after a four-year follow-up period. -
Pelagic shark fisheries of Indonesia's Eastern Indian Ocean Fisheries Management Region
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: Fahmi --- Research Centre for Oceanography, Indonesian Institute of Sciences, Indonesia Dharmadi --- Research Centre for Fisheries Management and Conservation, Ministry of Marine Affairs and Fisheries, IndonesiaSharks are commonly caught in Indonesian waters both by target fisheries and as bycatch. Fishers targeting sharks mostly employ drift longlines, whereas tuna longlines and gillnets are the gear mostly responsible for shark bycatch. Our studies on shark fisheries have... -
Long-term trends in the shore fishery of the Transkei coast, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: P. Pradervand --- Oceanographic Research Institute, South AfricaTwenty four years (1977 2000) of competition shore angling catch and effort data from the Natal Coastal Anglers Union for the Transkei were analysed. Of a total of 71 species recorded, the most commonly caught species were Pomatomus saltatrix (19%),... -
Improvement noted after a multifaceted approach to diabetes mellitus management
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Pillay --- Department of Internal Medicine, South Africa C Aldous --- School of Clinical Medicine, University of KwaZulu-Natal, South Africa F Mahomed --- Department of Internal Medicine, South AfricaBackground: Optimal control of diabetes mellitus remains elusive, especially in developing countries. A comprehensive and standardised approach, coupled with intensive patient and clinician education, may provide the solution. -
Nutrition in paediatric Crohn’s disease
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: O. Goulet --- Department of Pediatric Gastroenterology, Hepatology and Nutrition, FranceInflammatory bowel disease (IBD) such as Crohn’s disease (CD) results from the interaction between an individual’s immune response and precipitant environmental factors, which generate an anomalous chronic inflammatory response in those who are genetically predisposed. Protein-energy malnutrition (PEM) is a... -
Acoustic fish biomass assessment in a deep Tunisian reservoir: effects of season and diel rhythm on survey results
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: I Djemali --- Institut National des Sciences et Technologies de la Mer, Tunisia H Laouar --- Centre Technique de l’Aquaculture, TunisiaTo determine the best acoustic sampling period for obtaining fish biomass estimates of a Mediterranean deep reservoir in Tunisia, day and night surveys were performed in spring (April), summer (September), autumn (December) and winter (March). A Simrad EK60 echosounder, equipped... -
Prevalence and pattern of dyslipidaemia in type 2 diabetes mellitus patients at a tertiary care hospital
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: R Daya --- Division of Endocrinology, Internal Medicine, South Africa Z Bayat --- Division of Endocrinology, Internal Medicine, South Africa FJ Raal --- Division of Endocrinology & Metabolism, South AfricaBackground: Diabetes mellitus (DM) is a common secondary cause of dyslipidaemia, particularly if glycaemic control is poor, which in turn is an important risk factor for atherosclerosis and coronary artery disease. -
Are type 2 diabetic patients meeting targets? A Helen Joseph Hospital Diabetic Clinic Audit
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: S Bulbulia --- Division of Diabetes, Endocrinology and Metabolism, Helen Joseph Hospital, F Variava --- Physician, Netcare Pinehaven Hospital, South Africa Z Bayat --- Division of Diabetes, Endocrinology and Metabolism and Department of Internal Medicine, Helen Joseph Hospital,Background: The risk of complications from type 2 diabetes mellitus (T2DM) is high. Achieving targets reduces the morbidity and mortality. This study aims to assess whether patients at the Helen Joseph Hospital's Diabetic Clinic are meeting the 2012 SEMDSA targets... -
Pilot study involving the use of point-of-care glycated haemoglobin (HbA1c) testing for screening and monitoring of diabetes mellitus in the public healthcare sector in KwaZulu-Natal
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: Somasundram Pillay --- , South AfricaBackground: The diabetes pandemic continues to cause both patient and economic burden. Globally, strategies to improve glycaemic control in patients with diabetes are highly sought after. One such strategy involves the use of point-of-care glycated haemoglobin (POCT HbA1c) testing, which... -
Evaluating equity analyst forecasts in South Africa
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Sajjaad Ahmed --- , South Africa Emlyn Flint --- , South AfricaSell-side fundamental analyst reports are highly valued in the financial industry and include three main quantitative components: earnings forecasts, target prices, and buy/sell recommendations. This paper examines analyst accuracy by investigating forecasts made on South African equities over the period... -
An evaluation of the environmental behaviour, fate and risk of key pesticides used in South African forest plantations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Noxolo Nokwethemba Ndlovu --- , South Africa Keith Little --- , South Africa Brenda Baillie --- , New Zealand Carol Rolando --- , New ZealandPesticides are important for the management of pests and diseases that have a negative impact on the sustainability of the forestry industry. Nevertheless, there is a trend to reduce pesticide use owing to the potential detrimental impacts they pose to... -
A protocol and tools for setting environmental water temperature guidelines for perennial rivers in South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Helen Dallas --- , South Africa Nicholas Rivers-Moore --- , South AfricaHuman activities have cumulatively altered natural thermal regimes, with impacts and occurrences of extreme events amplified and exacerbated by global climate change. This leads to cascading ecological impacts in river systems. This paper translates knowledge generated over more than ten... -
Acoustic assessment of the biomass of aggregated chokka squid Loligo reynaudii on its inshore spawning grounds on the southeast coast of South Africa in the season closed for fishing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Hampton --- , South Africa MA Soule --- , South Africa J Mwicigi --- , South AfricaRecent attempts to estimate the biomass of chokka squid Loligo reynaudii on the southeast coast of South Africa by acoustic surveys of the inshore jig-fishing area are described. Pilot surveys of aggregations, covering part of the fishing grounds, were conducted... -
Rating to economic profit: Valuation properties, implementation issues, and the justification of target prices
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Apostolos Ballas --- Athens University of Economics and Business, Greece Grigoria Chlomou --- Edinburgh Napier University, UK Efthimios Demirakos --- Athens University of Economics and Business, GreeceThis study offers a comprehensive theoretical and empirical analysis of a fundamentals-based investment criterion (HSBC’s Rating to Economic Profit – REP). By employing a large sample of US-listed firms over a 12-year time-period and conducting univariate, multivariate and portfolio analyses,... -
Assessing the extent to which African wetland inventories can report to the global targets on biodiversity, including Goal A of the Global Biodiversity Framework
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MM Sadiki --- University of Pretoria, RSA H van Deventer --- University of Pretoria, RSA CD Hansen --- University of Pretoria, RSAWetlands face global threats with estimates suggesting a loss ranging from 21% to 85% of their original extent. Africa’s wetlands, covering about 4.4% of the continent, provide crucial services to millions of people and harbour significant biodiversity. This study assesses... -
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... -
Lipid profile of patients with uncontrolled type 2 diabetes mellitus at a tertiary South African hospital
Item type: Journal Article • Journal: Journal of Endocrinology, Metabolism and Diabetes of South Africa • Authors: A Parak --- Helen Joseph Hospital, South Africa R Daya --- Helen Joseph Hospital, South Africa Z Bayat --- Helen Joseph Hospital, South Africa -
A critical evaluation of the front matter: the case of Kriel, Pharos and Oxford Northern Sotho-English bilingual dictionaries
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Makoetja Ramusi --- North-West University, South Africa Gugulethu Mazibuko --- University of KwaZulu-Natal, South AfricaNorthern Sotho bilingual dictionaries have existed since the 1970s as a tool for learners, teachers and translators of that time to understand and comprehend the language better. This study provides different perspectives on how the front matter can affect the... -
ChiShona lexical interference in Zimbabwean isiNdebele: A case of selected schools in Gweru
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Cordial Bhebe --- University of the Free State, Martha Khosa --- University of the Free State,The study explores syntactic interference involving isiNdebele and ChiShona in the teaching and learning of isiNdebele in a dominant ChiShona-speaking environment. The study was undertaken in secondary schools in Gweru in Zimbabwe. The investigation adopted a qualitative paradigm, while the... -
Establishing a basis for recognising marine ‘other effective area-based conservation measures’ (OECMs) in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- Fisheries and the Environment (DFFE), South Africa P Kowalski --- , South Africa SD Holness --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa LJ Atkinson --- , South Africa R Brand --- Western Cape Government, South Africa L Dunga --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa TP Fairweather --- Fisheries and the Environment (DFFE), South Africa T Goldman --- Rhodes University, South Africa D Marnewick --- Eastern and Southern Africa Regional Office, South Africa J Nhleko --- Fisheries and the Environment (DFFE), South Africa R Peter --- Fisheries and the Environment (DFFE), South Africa C Smith --- World Wide Fund for Nature – South Africa (WWF-SA), South Africa MG van der Bank --- South African National Biodiversity Institute (SANBI), Kirstenbosch Research Centre, South Africa G van der Heever --- Fisheries and the Environment (DFFE), South Africa L van Niekerk --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa KA Wright --- Wildlands Conservation Trust (WILDTRUST), South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South AfricaThe concept of ‘other effective area-based conservation measures’ (OECMs) and its technical guidance provide opportunities for recognising a broader range of area-based management measures that contribute to biodiversity conservation outside of protected areas. However, progress towards the recognition of OECMs... -
Optimizing real-time stereo image retargeting for AR/VR: Lightweight disparity CNNs on AI-Driven edge architectures
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Mahendra T. Jagtap --- University of South Florida, Muma College of Business (Sarasota-Manatee Campus), USA Bhuvan Unhelkar --- University of South Florida, USA Pravin R. Kshirsagar --- JD College of Engineering and Management, India Nitin Rakesh --- Symbiosis Institute of Technology, India R. Thiagarajan --- VelTech multiTech Dr. Rangarajan Dr. Sakunthala Engineering College, India Vishal Patil --- Loknete Gopinathji Munde Institute of Engineering Education & Research, Nashik and SPPU, IndiaReal-time stereo image retargeting for augmented reality (AR) and virtual reality (VR) necessitates precise per-pixel depth estimation and ultra-low latency performance on resource-limited edge devices. Current disparity convolutional neural networks (CNNs) and retargeting pipelines are unable to meet these demanding...