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Determining sample size for assessing species composition in grassland1
Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa • Authors: M.B. Hardy --- Department of Agricultural Development, Republic of South Africa R.S. Walker --- Department of Grassland Science, Republic of South AfricaSpecies composition is measured in grasslands for a variety of reasons. Commonly, observations are made using the wheel‐point apparatus. However, the problem of determining optimum sample size has not yet been satisfactorily resolved. In this study the wheel‐point apparatus was... -
Calibration models for interpretation of soil salinity measurements using an electromagnetic induction technique
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.A. Johnston --- Department of Agronomy, Republic of South Africa M.J. Savage --- Department of Agronomy, Republic of South Africa J.H. Moolman --- Department of Soil and Agricultural Water Science, Republic of South Africa H.M. du Plessis --- , Republic of South AfricaA commercially available salinity sensor (model EM-38 of Geonics Ltd., Canada) has been developed for diagnosing and quantifying soil salinity in the field. There is a need, however, to calibrate the instrument reading against a more commonly used measure of... -
A comparison of three methods of soil water content determination
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: K.M. Little --- , Republic of South Africa B. Metelerkamp --- , New Zealand C.W. Smith --- , Republic of South AfricaIn forestry the need to manage plantations on a sustainable site-specific basis requires the understanding and management of any growth limiting factors. Soil water regime is a factor considered to be of prime importance with respect to explaining differences in... -
Soil organic matter and microbial biomass as influenced by sugar cane (Saccharum hybrid sp.) production practices in Mauritius
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.R. Ng Cheong --- , Mauritius K. F. Ng Kee Kwong --- , Mauritius C. C. Du Preez --- Department of Soil, Crop and Climate Sciences, South AfricaSugar cane has been grown in Mauritius for over 350 years in a monocropping system. As a result, soil quality could have declined since productivity has been stagnating over the last twenty years in spite of improved agronomic practices and... -
Web-based teaching, learning and research using accessible real-time data obtained from field-based agrometeorological measurement systems
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael J Savage --- Agrometeorology Discipline, Soil-Plant-Atmosphere Continuum Research Unit, School of Agricultural, Earth and Environmental Sciences, South Africa Michael G Abraha --- Agrometeorology Discipline, Soil-Plant-Atmosphere Continuum Research Unit, School of Agricultural, Earth and Environmental Sciences, South Africa Nicholas C Moyo --- Agrometeorology Discipline, Soil-Plant-Atmosphere Continuum Research Unit, School of Agricultural, Earth and Environmental Sciences, South Africa Nile Babikir --- Agrometeorology Discipline, Soil-Plant-Atmosphere Continuum Research Unit, School of Agricultural, Earth and Environmental Sciences, South AfricaTo enhance teaching and learning in agrometeorology and allied disciplines, a Web-based data and information system was developed. The system uses field-based agrometeorologcial measurements, from automatic weather, radiation and temperature stations, to collect and display near real-time and previous data... -
Artificial neural networks and non-linear regression for quantifying the wood volume in Eucalyptus species
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Tays Silva Batista --- , Brazil Larissa Pereira Ribeiro Teodoro --- , Brazil Gileno Brito de Azevedo --- , Brazil Glauce Taís de Oliveira Sousa Azevedo --- , Brazil Nerison Luis Poersch --- , Brazil Marcus Vinicius Vieira Borges --- , Brazil Paulo Eduardo Teodoro --- , BrazilWood volume is the variable that best represents the yield of planted forests, and several regression models are used in its estimation. Artificial neural networks (ANNs) are recognised for their accuracy and generalisation capacity associated with the quality and quantity... -
Quantified range condition assessment of open Camelthorn savanna along a degradation gradient
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: I Zimmermanno FP Graz MH Berry NNT Imasiku ND Muroua MM Sibalatani CS SikopoMeasurements were taken at 20 different sites in a relatively homogenous area of open Camelthorn savanna in eastern Namibia. Ordination of grass species composition did not provide a good degradation gradient, due to domination by different species of annual grasses... -
Towards a technique for determining basal cover in tufted grasslands
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: M.B. Hardy --- , Republic of South Africa N.M. Tainton --- Department of Grassland Science, Republic of South AfricaComputer simulation, point‐based field sampling procedures, and step‐wise multiple linear regression were used to establish a relationship between the basal cover (BC) of a sample site and paired observations of the mean distance from a point to the nearest living... -
Teacher Ratings and Standardised Test Scores: How Good for Predicting Achievement in Students with Learning Support Placement?
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Levison Maunganidze --- Zimbabwe Open University, Nancy Ruhode --- Zimbabwe Open University, Loice Shoniwa --- Zimbabwe Open University, Solomon Nyanhongo --- Midlands State University, Joseph M. Kasayira --- Midlands State University, Tholene Sodi --- University of Venda, South AfricaThe study analysed the relationships between teacher ratings and standardised test scores in Reading and Mathematics for students receiving learning support for learning difficulties (n = 60, mean age= 16.3). Teacher ratings were found to significantly predict pupils' performance in... -
Psychometric Properties of Various Scales Measuring Psychological Well-Being in a South African Context: The FORT 1 Project
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jan A. B. Wissing --- North-West University, Marié P. Wissing --- North-West University, Marietjie M. du Toit --- North-West University, Q. Michael Temane --- North-West University,The aim of this study was to do a first phase screening of psychometric properties of various scales measuring facets of psychological well-being so as to address further questions in the FORT 1 project (FORT 1 = Clarifying the nature... -
Well-Being in the Batswana Cultural Context: Constructs and Measures
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Itumeleng P. Khumalo --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Marié P. Wissing --- North-West University, South AfricaThe study investigated wellbeing in a Setswana-speaking sample. Participants (n=459, males =141 females =318; 22% = aged between 30 and 40 years) completed the General Psychological Well-being Scale (GPWS: Khumalo, Temane & Wissing, 2010) and the Mental Health Continuum Short-Form... -
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 Psychometric Properties of the Adapted and Revised Organisational Climate Description Questionnaire (AAROCDQ)
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Werner de Klerk --- North-West University, South Africa Q. Michael Temane --- North-West University, South Africa Alida W. Nienaber --- North-West University, South AfricaThis study validated the Adapted and Revised Organisational Climate Description Questionnaire (AAROCDQ) for school climate as experienced by teachers. Participants were 394 school teachers (72 male and 322 female) from 40 schools in South Africa. Internal consistency and factor structure... -
Confirming the Factor Structure of the 41-Item Version of the Schutte Emotional Intelligence Scale
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Marais Bester --- North-West University, South Africa Cara S. Jonker --- North-West University, South Africa Jan Alewyn Nel --- North-West University, South AfricaThe main aim of this study was to investigate the factor structure of the 41-item version of the Schutte Emotional Intelligence Scale within a South African nursing environment. An availability non-probability sample (N =290) of nurses from hospitals in the... -
Good Projections of Spaces of Vector Measures onto Subspaces of Bochner Integrable Functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Giovanni EmmanueleWe show that the complementability of L 1 (μ, X) in cabv (μ, X) implies the complementability of L 1 (μ, K(Z, X)) in cabv (μ, K(Z, X)), provided the projection from cabv (μ, X) onto L 1 (μ, X)... -
On Carleson Embeddings Of Star-invariant Supspaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: JosephA. Cima AlecL. MathesonEmbeddings of star-invariant subspaces K p θ of H p determined by an inner function θ are studied. Using a method of Aleksandrov, it is shown that the embedding into L p (μ) is compact whenever μ satisfies a certain... -
Lattice Properties of Operators Defined By Random Measures
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J.J. Grobler B. de Pagter D.T. RambaneWe prove that the lattice properties of operators defined by random measures hold under general conditions on the measure space. This solves a problem found in a paper of A.R. Sourour on these operators and generalizes his results. -
Lyapunov Convexity Type Theorems For Non-Atomic Vector Measures
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. Saab P. SaabGiven a Banach space X, we consider the problem of when the range of a non-atomic, and σ-additive X-valued measure has a convex closure. We give a survey of Lyapunov convexity type theorems pertaining to this problem. We also give... -
Equivalence Properties For The Radon-Nikodym Property Types and The Complete Continuity Property Types Of Banach Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: MangatianaA. RobderaWe show that the types, I- and II-Λ-Radon-Nikodym Property of Banach spaces on the one hand, and the I- and II-Λ-Complete Continuity Property on the other, are equivalent properties whenever Λ is an ordering subset of a discrete abelian group. -
The Coarsest Hausdorff Lebesgue Topology
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jurie ConradieIf a Riesz space E contains an order dense Riesz subspace which admits a Hausdorff Lebesgue (i.e. order continuous) topology, then there is a coarsest Hausdorff Lebesgue topology on E. This topology extends uniquely to a Hausdorff Lebesgue topology on... -
Absolute continuity of vector measures and operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Changsun Choi M. de KockIn this paper we show that, for two regular Borel probabilities μ and ν on a compact Hausdorff space Ω, absolute continuity of measures μ &Lt ν is equivalent to absolute continuity of inclusion operators [C(Ω) ↪ L 1(μ)] ≪... -
The canonical spectral measure and köothe function spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jos´e Bonet Susumu Okada WernerJ. RickerThe theme of this paper is the interaction between analytic properties of (Fréchet) Köthe function spaces X and measure/operator theoretic properties of the canonical spectral measure Q acting in X. For instance, Q is boundedly σ-additive iff X is Montel... -
Annihilating probability measures under constraints
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bernhard BurgstallerLet P be a probability measure and H ⊆ L ∞(P) be a linear subspace and 0 < c ≤ 1 ≤ C real constants. Then we give a relatively computable criterion whether or not there exists a H-annihilating probability... -
Approach structures and measures of connectedness
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: David Holgate Mark SioenMeasures of connectedness versus disconnectedness are introduced in anarbitrary topological construct as fixed points of a Galois connection. This places measures of connectedness found in the literature in a general categorical frame-work. -
Sequences of measures on atomic subalgebras of P(N)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Antonio Aizpuru Antonio Gutiérrez-DávilaA vector form of Phillips' theorem, for atomic Boolean algebras with countably many atoms, is given. As a consequence we obtain a new characterization of weak compact sets of σ-additive measures. -
On the Maximal Function for the Generalized Ornstein-uhlenbeck Semigroup.
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jorge Betancor Liliana Forzani Roberto Scotto WilfredoO. UrbinaIn this note we consider the maximal function for the generalized Ornstein-Uhlenbeck semigroup in R associated with the generalized Hermite polynomials {H μ n } and prove that it is weak type (1,1) with respect to dλ... -
Mahler Measure and Modular Elliptic Surfaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Leila Benferhat --- , AlgerieIn this paper we prove a formula for the Mahler measure of as the integral of the classical elliptic period function K. By analysing the associated elliptic surfaces we also prove the identity between Mahler measures -
Vector integration
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E.G.F. Thomas --- Johann Bernoulli Institute for Mathematics and Computer Science, The NetherlandsThis paper deals with the theory of integration of scalar functions with respect to a measure with values in a, not necessarily locally convex, topological vector space. It focuses on the extension of such integrals from bounded measurable functions to... -
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,... -
Agriculture and Climate Change in Cameroon: An Assessment of Impacts and Adaptation Options
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yong D. Ngondjeb --- , CameroonThis study aims to assess the economic impact of climate change on crop farming activities in the Sudano-Sahelian Area of Cameroon. The study uses the Ricardian model and is based on farm data generated from a survey carried out in... -
Assessment of HIV-positive in-patients using the International Classification of Functioning, Disability and Health (ICF) at Chris Hani Baragwanath Hospital, Johannesburg
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Hellen Myezwa Aimee Stewart Eustasius Musenge Paul NesaraThe International Classification of Functioning, Disability and Health (ICF) short-version checklist was used to assess the impairments, activity limitations and participation restrictions experienced by a sample of HIV-positive in-patients admitted to Chris Hani Baragwanath Hospital in Johannesburg, South Africa. Laboratory... -
Measure of compactness for filters in the approach setting
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Frédéric MynardNew explicit descriptions of the reflections of a convergence-approach space on pseudo-approach, pre-approach and approach spaces are given. A measure of compactness for filters is introduced in the context of convergence-approach spaces. It is shown that this measure generalizes all... -
Jordan homomorphisms between algebras of measurable operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Martin WeigtWe prove that every self-adjoint algebra homomorphism between algebras of measurable operators is continuous and can be expressed as a sum of a self-adjoint algebra homomorphism as well as a self-adjoint algebra anti-homomorphism. We also provide sufficient conditions under which... -
On some parameters related to weak noncompactness in L1(μ,E)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Diana Caponetti --- Department of Mathematics, ItalyA weak measure of noncompactness γU is defined in a Banach space in terms of convex compactness. We obtain relationships between the measure γU (A) of a bounded set A in the Bochner space L1 (μ,E) and two parameters Π(A)... -
Blood pressure measurement: why, how, when, and where?
Item type: Journal Article • Journal: South African Family Practice • Authors: E O'Brien --- The Conway Institute, University College, Ireland -
Prevalence of end-digit preference in recorded blood pressure by nurses: a comparison of measurements taken by mercury and electronic blood pressure-measuring devices
Item type: Journal Article • Journal: South African Family Practice • Authors: OE Ayodele --- Department of Internal Medicine, SO Akinyemi --- People Living with HIV/AIDS Clinic, AO Adeniji --- Department of Obstetrics and Gynaecology, AO Akinboro --- Department of Internal Medicine, AA Popoola --- Ladoke Akintola University of Technology Teaching Hospital, Nigeria CA Alao --- Department of Nursing, NigeriaObjectives: When compared with the use of a mercury sphygmomanometer, the use of a validated digital blood pressure (BP) measuring device eliminates the risk of exposure to mercury. Digital devices are also associated with a lesser degree of end-digit preference... -
A guide to performing skin-prick testing in practice: tips and tricks of the trade
Item type: Journal Article • Journal: South African Family Practice • Authors: O Coetzee --- Department of Paediatrics and Child Health, Division of Paediatric Pulmonology, RJ Green --- Department of Paediatrics and Child Health, Division of Paediatric Pulmonology, R Masekela --- Department of Paediatrics and Child Health, Division of Paediatric Pulmonology,Atopy can manifest in childhood as infantile eczema (atopic dermatitis), allergic rhinitis and asthma. In practice, it is critical to identify the offending allergen in atopic individuals. This will not only influence therapeutic interventions, but may also have a significant... -
Microclimate conditions in ventilated wet-walled greenhouses in a subtropical climate: spatial variability
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Michael J Savage --- Agrometeorology Discipline, Soil-Plant-Atmosphere Continuum Research Unit, School of Agricultural, Earth and Environmental Sciences, South AfricaSpatial variations of microclimatic conditions in enclosed north–south (N–S) oriented single-arched greenhouse polycarbonate structures, with a wet-wall providing evaporative cooling at the S end, were investigated and displayed online in near real-time. Temperature-controlled fans at the N end extracted air... -
Knowledge of life: health, strength and labour in KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Thomas Cousins --- Department of Sociology & Social Anthropology, South AfricaThe article examines the production of new modes of calculation, calibration and measurement of bodies at work in the timber plantations of northern KwaZulu-Natal, South Africa — modes that echo older, diverse technologies of self and health while producing new... -
The correlation between the health-related fitness of healthy participants measured at home as opposed to fitness measured by sport scientists in a laboratory
Item type: Journal Article • Journal: South African Family Practice • Authors: CC Grant --- Department of Sports Medicine, South Africa DC Janse van Rensburg --- Department of Sports Medicine, South Africa MS Pepper --- Department of Immunology, South Africa PJ du Toit --- Department of Physiology, South Africa PS Wood --- Department of Biokinetics, Sport and Leisure Sciences, South Africa J Ker --- Department of Sports Medicine, South Africa PE Krüger --- Institute for Sport Research, South Africa CW Grobbelaar --- Department of Physiology, South Africa K Nolte --- Department of Biokinetics, Sport and Leisure Sciences, South Africa F Fletcher --- Department of Statistics, South Africa TC Grant --- Department of Sports Medicine, South AfricaBackground: Fitness is defined in the health context as a state of good health or physical condition, primarily as a result of exercise and proper nutrition. Conventional methods of measuring fitness are expensive, time consuming and require specialised methods. There... -
Wildlife roadkill patterns on a major highway in northern Tanzania
Item type: Journal Article • Journal: African Zoology • Authors: John Kioko --- School for Field Studies, Tanzania Christian Kiffner --- School for Field Studies, Tanzania Nicole Jenkins --- Department of Environmental Studies, Davidson College, USA Wendy J Collinson --- Endangered Wildlife Trust, South AfricaDespite expanding road networks, there is limited understanding of the effects of roads on wildlife in East Africa. We present a baseline survey and describe the patterns of roadkill in the Tarangire–Manyara ecosystem of Tanzania. A 75 km stretch of... -
Measuring the selection and timing abilities of South African fund managers
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: D J Bradfield --- Department of Statistical Sciences,This article reviews a model proposed by Bhattacharya and Pfleiderer (1983) and first implemented by Lee and Rhaman (1990) which allows the separation of the measurement of selection and timing skills of fund managers. It is the first model to... -
The appropriateness of performance measurement in the service sector: A case study
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: K Sartorius --- School of Accountancy, C Eitzen --- School of Accountancy, C Nicholson --- School of Accountancy,The development of performance measures in service companies has not kept abreast with their manufacturing counterparts despite the unprecedented growth of this sector in recent decades. The objective of this paper is to contribute towards a better understanding of the... -
Cost contribution agreements: The South African tax implications of research and development costs incurred by multinationals participating in joint research projects with offshore associates
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Steyn --- Department of Management Accounting,Cost Contribution Agreements (CCAs) or cost sharing of research and development costs, is one of the vehicles sanctioned by tax authorities that may be used by multinational enterprise groups (MNEs) to develop and distribute intangible property among members of the... -
An evaluation of corporate ownership structures on employee, management and shareholder compensation for JSE companies
Item type: Journal Article • Journal: De Ratione • Authors: T. Cohen --- H. Tarley and Company, E. Uliana --- University of Cape Town,Where corporate ownership and control are separated, the actions of employees and managers are not completely observable by shareholders, because it is virtually Impossible for a diverse group of shareholders (the principals), to monitor the behaviour of employees and managers... -
CEO's use of financial and non-financial performance measures: Manufacturing companies in Mauritius and Australia compared
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: DW Taylor --- School of Accounting, Curtin University of Technology, Australia T Soobaroyen --- School of Management, University of Mauritius, C Ah-Hen --- School of Management, University of Mauritius,It is contended in a body of management accounting literature that financial performance measures are being rendered less relevant than non-financial measures in the management of companies. Such a management trend towards non-financial performance measures is particularly applicable to manufacturing... -
A cross-sectional study on knowledge of, attitudes towards and practice of malaria prevention and control measures in central nigeria
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: C A Okoli --- Department of Paediatrics, M A Enna --- Department of Microbiology,There is limited evidence of a decrease in malaria-related mortality and morbidity with the expiration of the 2010 Roll Back Malaria (RBM) Partnership target deadline. Thus, there is a need to evaluate the knowledge of, attitudes towards and practice of... -
Factorial invariance of the Rahim emotional quotient index
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Martina Kotzé --- Business School, University of the Free State, South Africa Petrus Nel --- Department of Industrial Psychology, South AfricaThis study investigated the degree of factorial invariance of the 30-item Rahim Emotional Quotient Index (REQI) (Afzalur Rahim et al., 2002) across gender and language, using multiple group confirmatory factor analysis. Respondents were 341 full-time employed applicants to programmes in... -
An improved technique for non-destructive measurement of the stem volume of standing wood
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Cheng He --- Forest Fire Research Center, China Xiafang Hong --- School of Tourism, China Kezhen Liu --- Research Institute of Forest Ecology, Environment and Protection, China Siyu Zhang --- Forest Fire Research Center, China Qiuwen Wang --- Forest Fire Research Center, ChinaAn improved technique, cheaper and less time-consuming, to measure standing wood volume by using an electronic theodolite was tested, by which greater information from the forest could be acquired accurately and non-destructively. This was achieved by recording the diameter at... -
The exploratory and confirmatory factor analyses of two subjective career success instruments
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Eileen Koekemoer --- Department of Human Resource Management, South Africa Jan Alewyn Nel --- Department of Human Resource Management, South Africa Audine du Toit --- WorkWell Research Unit, South AfricaThis study investigated the psychometric properties of two subjective career success instruments within the South African context: Perceived Career Success (PCSS: Gattiker & Larwood, 1986) and Life Success Measures Scale (LSMS: Parker & Chusmir, 1992). Data were collected via a... -
Non-invasive measurement of adrenocortical activity in a myrmecophageous mammal, the bat-eared fox
Item type: Journal Article • Journal: African Zoology • Authors: Aliza Le Roux --- Zoology and Entomology, South Africa Helene Botha --- Zoology and Entomology, South Africa Fredrik Dalerum --- Research Unit of Biodiversity (UO, CSIC, PA), Spain Andre Ganswindt --- Endocrine Research Laboratory, Department of Anatomy and Physiology, South AfricaMeasuring physiological stress reactions through the quantification of plasma cortisol often involves physical restraint, which acts as a stressor itself. Here, we present the validation of a non-invasive method for assessing adrenocortical activity as an indicator of stress in the... -
Measurement invariance across gender and ethnicity on the Emotional Quotient Inventory 2.0
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Casper J. J. Van Zyl --- Department of Psychology, South AfricaThis study investigated the measurement invariance of the Emotional Quotient Inventory 2.0 across gender and ethnic groups in South Africa. The sample consisted of 1 144 working adults (female = 49.8%. black = 36.2%, white = 29.8%; other = 34%;... -
Measures of weak noncompactness, nonlinear leray-schauder alternatives in banach algebras satisfying condition (p) and an application
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Amro Alsheikh Ali --- , , Tunisia Afif Ben Amar --- , , TunisiaIn this paper, we establish some new nonlinear Leray-Schauder alternatives for the sum and the product of weakly sequentially continuous operators in Banach algebras satisfying certain sequential condition (P). The main condition in our results is formulated in terms of... -
Socio-demographic profiles and anthropometric status of 0- to 71-month-old children and their caregivers in rural districts of the Eastern Cape and KwaZulu-Natal provinces of South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Cm. Smuts --- Nutritional Intervention Research Unit, M. Faber --- Nutritional Intervention Research Unit, Se. Schoeman --- Nutritional Intervention Research Unit, Ja. Laubscher --- Biostatics Unit, A. Oelofse --- Centre for Nutrition, Ajs. Benadé --- Cape Peninsula University of Technology, Ma. Dhansay --- Nutritional Intervention Research Unit,Abstract -
The development of a preliminary regression equation for estimating the weight of black South African paraplegic males using anthropometric measurements in Tshwane, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: H. Snyman --- Association for Dietetics in South Africa, Mg. Herselman --- Division of Human Nutrition, D. Labadarios --- Division of Human Nutrition,Abstract -
Anthropometric characteristics and nutritional status of older adults in the Lake Victoria Basin of East Africa: region, sex, and age differences
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Mj Cheserek --- Human Nutrition Department, Pj. Tuitoek --- Human Nutrition Department, Jn Waudo --- Department of Food Nutrition and Dietetics, Jm Msuya --- Department of Food Science and Technology, Jk. Kikafunda --- Department of Food Science and Technology,Background: Malnutrition, either as undernutrition or overnutrition, leads to detrimental alterations in body composition. The objective of this study was to investigate selected anthropometric measurements, and the nutritional status of older men and women living in the Lake Victoria Basin... -
True height and variability in estimates thereof across race and gender
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Christen Lahner --- Discipline of Dietetics and Human Nutrition, School of Agricultural Sciences and Agribusiness, Faculty of Science and Agriculture, Susanna Kassier --- Discipline of Dietetics and Human Nutrition, School of Agricultural Sciences and Agribusiness, Faculty of Science and Agriculture,Although standing height is the ideal indicator of a subject’s true height, numerous internal and external factors can have an effect on its accuracy. These factors include measurement error, the clinical environment, growth and a secular change in growth, and... -
Circulation of shelf waters in the KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Ocean Sciences and Marine Food Security, South Africa C Nieuwenhuys --- Bayworld Centre for Research and Education, South Africa LA Guastella --- Bayworld Centre for Research and Education, South AfricaShip-based acoustic Doppler current profiler (S-ADCP) technology, used in survey mode, has enabled near- synoptic views of the in situ 3-D current field in the KwaZulu-Natal (KZN) Bight to be elucidated for the first time. Data acquired by the research... -
Observations and mechanisms of upwelling in the northern KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Ocean Sciences and Marine Food Security, South Africa C Nieuwenhuys --- Bayworld Centre for Research and Education, South AfricaNew in situ time-series data were acquired by two ADCP moorings placed on the shelf off Richards Bay on the east coast of South Africa at depths of 25 m and 582 m between October 2009 and August 2010. The... -
Arm-associated measurements as estimates of true height in black and white young adults of both genders: an exploratory study, Pietermaritzburg, KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Christen R Lahner --- Dietetics and Human Nutrition, School of Agricultural, Earth and Environmental Sciences, South Africa Susanna M Kassier --- Dietetics and Human Nutrition, School of Agricultural, Earth and Environmental Sciences, South Africa Frederick J Veldman --- Dietetics and Human Nutrition, School of Agricultural, Earth and Environmental Sciences, South AfricaObjective: To determine the accuracy of arm-associated anthropometric measurements as estimates of true height. -
Early rheumatoid arthritis: focus on RA in the developing world
Item type: Journal Article • Journal: South African Family Practice • Authors: Mahmood MTM Ally --- Faculty of Health Sciences, Department of Internal Medicine, South Africa Pieter WA Meyer --- Faculty of Health Sciences, Department of Immunology, South Africa Ronald Anderson --- Faculty of Health Sciences, Department of Immunology, South AfricaA review was undertaken of pathogenic mechanisms in early rheumatoid arthritis (RA) and strategies for cost-effective management of RA in the developing world. Pitfalls in early disease are explored and the importance of aggressive measurable disease control is emphasised. -
Validation of an efficient visual method for estimating leaf area index in clonal Eucalyptus plantations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Rodrigo Hakamada --- Forest Resources Graduate Program, Brazil Carmeni Giunti Neto --- Fibria, Brazil Cristiane CZ de Lemos --- International Paper do Brasil, Brazil Sérgio R Silva --- National Wheat Research Center, Brazilian Agricultural Research Corporation (Embrapa), Brazil Marina SG Otto --- Department of Plant Physiology and Biochemistry, Brazil Kevin B Hall --- Department of Forestry and Environmental Resources, USA José L Stape --- Suzano Company, BrazilLeaf area index (LAI) is a key ecophysiological parameter in forest stands because it characterises the interface between atmospheric processes and plant physiology. Several indirect methods for estimating LAI have been developed. However, these methods have limitations that can affect... -
A criminogenic profile of a sample of South African high school learners
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Johan Prinsloo --- Department of Criminology,This study investigated the prevalence of criminogenic risk factors among South African high school learners. A sample of 312 high school learners attending a secondary (high) school in the Gauteng province of South Africa were surveyed (55.3% = female). They... -
Human–wildlife conflict and attitude of local people towards conservation of wildlife in Chebera Churchura National Park, Ethiopia
Item type: Journal Article • Journal: African Zoology • Authors: Aberham Megaze --- Department of Biology, Faculty of Natural Sciences, Ethiopia Mundanthra Balakrishnan --- Department of Zoological Sciences, Ethiopia Gurja Belay --- Department of Zoological Sciences, EthiopiaHuman–wildlife conflict is a serious challenge undermining the integrity of protected areas in developing countries. Developing effective human–wildlife conflict mitigation strategies requires an understanding of the conflict patterns, species involved and attitudes of local people living along protected area boundaries... -
Patterns and trends in seabird bycatch in the pelagic longline fishery off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: DP Rollinson --- FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South Africa RM Wanless --- FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South Africa PG Ryan --- FitzPatrick Institute of African Ornithology, DST/NRF Centre of Excellence, South AfricaBoth foreign and domestic pelagic longline fishing vessels operate in South Africa’s Exclusive Economic Zone and adjacent international waters where they kill hundreds of seabirds each year as bycatch. To update assessments of the impact of the pelagic longline fishery... -
Hospital-acquired malnutrition in children at a tertiary care hospital
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Del-Rossi Sean Quadros --- Department of Paediatrics and Child Health, Kenya. Rose Kamenwa --- Department of Paediatrics and Child Health, Kenya. Samuel Akech --- Department of Paediatrics and Child Health, Kenya. William M Macharia --- Department of Paediatrics and Child Health, Kenya.Objectives: This study sought to investigate the incidence and factors associated with hospital-acquired malnutrition in children. -
Metabolic activity throughout early development of dusky kob Argyrosomus japonicus (Sciaenidae)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Edworthy --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa B Erasmus --- Department of Ichthyology and Fisheries Science, South Africa JOG Kemp --- Department of Ichthyology and Fisheries Science, South Africa H Kaiser --- Department of Ichthyology and Fisheries Science, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe physiology of fishes in the early stages of development remains poorly assessed despite the importance of identifying energy bottlenecks in organisms faced with changing environmental conditions. This study describes the metabolic activity of dusky kob Argyrosomus japonicus throughout its... -
A Decision Tree and Naïve Bayes algorithm for income tax prediction
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: G. V. Mabe-Madisa --- Department of Decision Sciences, South AfricaOne of the concerns regarding the tax collection system is incorrect case selection. Manual selection of audit cases by auditors (whose role is to detect individual cases of tax non-compliance) based on their expert knowledge of the taxpayers’ behaviour, cannot... -
An automated framework for business enterprise performance evaluation
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: C. O. Anyaeche --- Department of Industrial and Production Engineering, Nigeria D. E. Ighravwe --- Department of Mechanical Engineering, NigeriaThe evaluation of the performance of business enterprises has continued to pose challenges to business managers. Many approaches have been developed to address this problem, but most have been either input or output oriented, while some focus on specific tasks... -
Investigating the factors for achieving and encouraging environmental certification: Driving and restraining forces
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Stephanie M. E. Ching --- Stenden Hotel Management School, The Netherlands Elena Cavagnaro --- Stenden Hotel Management School, The NetherlandsEnvironmental sustainability has increasingly become a priority for organisations. However, the public and academic attention is generally on large companies, while small and medium enterprises constitute the bulk of organisations and are arguably lagging behind. Fewer than ten per cent... -
Adult weight measurement: decoding the terminology used in literature
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Christen Renée Lahner --- Department of Human Nutrition and Dietetics, South AfricaThere are various types of names given to describe the adult weight measurement. The most commonly used terms (actual body weight, estimated body weight, ideal body weight and adjusted body weight) have been defined and summarized to assist in their... -
Allometric equations from a non-destructive approach for biomass prediction in natural forest and plantation in West Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: SA Hamzath Kora --- Laboratory of Applied Ecology, Faculty of Agronomic Sciences, Benin GH Sabin Guendehou --- Laboratory of Applied Ecology, Faculty of Agronomic Sciences, Benin Cédric A Goussanou --- Laboratory of Applied Ecology, Faculty of Agronomic Sciences, Benin Achille E Assogbadjo --- Laboratory of Applied Ecology, Faculty of Agronomic Sciences, Benin Brice Sinsin --- Laboratory of Applied Ecology, Faculty of Agronomic Sciences, BeninAllometric equations are required for a rapid estimation of commercial timber volume and forest biomass stocks. In order to preserve the forest ecosystem, this study applied a non-destructive sampling approach to measure biophysical properties of living trees. From these measurements,... -
A comparative analysis of risk measures: A portfolio optimisation approach
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Evan Gilbert --- University of Stellenbosch Business School, South Africa Luke Meiklejohn --- Department of Actuarial Science, South AfricaInvestment portfolios are typically created to minimise the level of risk for a required level of return. This paper highlights the importance of the choice of risk metric in this process. The theoretical nature of volatility as a risk measure... -
Policy mixes and overcoming challenges to innovation in developing countries: Insights from a mixed methods study of South Africa’s manufacturing sector
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: David Richard Walwyn --- Department of Engineering and Technology Management, South Africa Shahendra Naidoo --- Gordon Institute of Business Science, JohannesburgAlthough innovation policy mix as an analytical framework has been widely used and reported for developed countries, its application to developing countries has been minimal. In this study, an exploratory sequential approach has been followed in order to initially profile... -
Does the choice of fund performance measure matter?
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Christopher Adcock --- School of Finance and Management, UK Nelson Areal --- NIPE Research Centre, School of Economics and Management, Portugal Maria Céu Cortez --- NIPE Research Centre, School of Economics and Management, Portugal Benilde Oliveira --- School of Economics and Management, Portugal Florinda Silva --- NIPE Research Centre, School of Economics and Management, PortugalThis paper investigates whether investment strategies using rankings based on different portfolio performance measures lead to different future abnormal returns. A set of 13 commonly used risk-adjusted performance measures is applied to a dataset of US equity mutual funds over... -
Wave setup at Tristan da Cunha
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PL Woodworth --- , United KingdomWave setup was investigated using data from tide gauges in a small harbour at the island of Tristan da Cunha in the South Atlantic Ocean. Frequent examples of wave setup were found during the period 1986–1992, but were much less... -
HIV serostatus, inflammatory biomarkers and the frailty phenotype among older people in rural KwaZulu-Natal, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Anita Edwards --- , South Africa Mark J Siedner --- , South Africa Stephen Nash --- , UK Melissa Neuman --- , UK Sivapragashini Danaviah --- , South Africa Theresa Smit --- , South Africa Dickman Gareta --- , South Africa Paul Kowal --- , Switzerland Janet Seeley --- , South AfricaObjective: We compared the prevalence of frailty by HIV serostatus and related biomarkers to the modified frailty phenotype among older individuals in a rural population in South Africa. -
National digital taxes – Lessons from Europe
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Stefanie Geringer --- , AustriaDigitalisation has done more to shape the 21st century than virtually any other phenomenon. However, international tax law has seemingly failed to keep pace with rapid technological developments, which has likely led to inequalities between the tax burden of traditional... -
The underlying concepts of the definition of a liability in financial reporting: A doctrinal research perspective
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Daniël Coetsee --- , South AfricaAccounting literature has identified fundamental conceptual issues and uncertainties regarding the financial reporting treatment of liabilities. This paper assesses whether the underlying concepts for the definition of a liability are robust and sufficiently developed in the 2018 Conceptual Framework of... -
Nest characteristics and morphometry of Black Crowned Cranes Balearica pavonina ceciliae in Lake Tana area wetlands
Item type: Journal Article • Journal: African Zoology • Authors: Shimelis Aynalem Zelelew --- , Ethiopia George Archibald --- , United StatesBirds select breeding habitats based on biotic and abiotic environmental factors, resulting in a non-random spatial distribution of nests. This study investigated the onset of nesting, nest location, the relationship between nest height and water depth, nest materials, and the... -
Sex determination of Kelp Gull Larus dominicanus vetula using head and bill measurements
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Albert Snyman --- , South Africa Elana Mostert --- , South Africa Katrin Ludynia --- , South AfricaKelp Gulls Larus dominicanus are not sexually dimorphic by plumage or visual characteristics and it is therefore difficult to distinguish males from females in the field. This paper assesses the sexual size dimorphism in this species and provides reliable methods... -
Predicting corporate defaults using machine learning with geometric-lag variables
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Hyeongjun Kim --- , Korea Hoon Cho --- , Korea Doojin Ryu --- , KoreaThis study examines whether corporate default prediction techniques based on machine learning can achieve better performance by using geometrically declining weighted average values of the time series variables, that is, geometric-lag variables. We test four machine learning algorithms: logistic regression,... -
An analysis of the extent and use of fair value by JSE Top 40 companies
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Wayne van Zijl --- , South Africa Valencia Hewlett --- , South AfricaFair value’s advantages, disadvantages and ideology have been debated thoroughly by academics and practitioners for decades. The few implementation papers which do exist are primarily concerned with developed economies. This gap is despite the prior literature acknowledging the likely difficulties... -
Assessing alternatives for growth and yield modelling in eucalypt stands
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Thaynara Reis --- , Simone Silva --- , Ivaldo Tavares Junior --- , Rodrigo Leite --- , Mariana Taquetti --- , Kemely Atanazio --- , Leonardo Fardin --- , Jovane Cruz --- , Helio Leite --- ,Growth and yield estimates are extremely important for forest stand management. The application of simple models is often useful, as it allows the use of plots with few or a single measurement. The objective of this study was to evaluate... -
Structural validity and measurement invariance of the Psychological Career Resources Inventory Short Form as a predictor of career satisfaction
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Melinde Coetzee --- , South Africa Xander van Lill --- , South Africa Marais S Bester --- , South AfricaThe present study had two objectives. The first objective was to assess the structural validity of the Psychological Career Resources Inventory – Short Form (PCRI-SF) and for measurement equivalence across ethnic (white and black) and gender groups in the South... -
Assessment of long-term protection on the aboveground biomass and organic carbon content using two non-destructive techniques: case of the Sidi Toui National Park in southern Tunisia
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Roukaya Chibani --- , Tunisia Abderrazak Tlili --- , Tunisia Farah Ben Salem --- , Tunisia Mounir Louhaichi --- , Tunisia Azaiez Ouled Belgacem --- , Saudi Arabia Mohamed Neffati --- , TunisiaLong-term protection of arid ecosystems changes the vegetation and soil structures. The quantification of aboveground biomass and carbon content are among the principal indicators to evaluate these changes. Most methods used to quantify these parameters are costly, time consuming and... -
Consumer acceptability of fried chips made from South African sweet potato cultivars
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: SM Laurie --- , South Africa WM Mphela --- , South AfricaIn South Africa, the processing of sweet potatoes has a high potential for economic gain, therefore, chips were prepared from six sweet potato cultivars with varying flesh colours for consumer preference evaluation. Scoring was based on colour, crispness, taste and... -
Validity and reliability of the HIV Disability Questionnaire for people living with HIV in South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Adetunji Adeleke --- University of Witwatersrand, South Africa Denise Franzsen --- University of Witwatersrand, South Africa Patricia de Witt --- University of Witwatersrand, South Africa Rulaine Smith --- University of Witwatersrand, South AfricaThis study determined the measurement properties of the HIV Disability Questionnaire (HDQ) on a sample of people living with HIV (PLWHIV) to validate this assessment in a resource-limited environment. A quantitative, descriptive, cross-sectional research design was used with PLWHIV on... -
Managing AIDS stigma
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: William L. Holzemer --- University of California, Leana R. Uys --- College of Health Sciences, University of KwaZulu-Natal,According to anecdotal reports, AIDS stigma and discrimination continue to influence people living with and affected by HIV disease as well as their health care providers, particularly in southern Africa where the burden of AIDS is so significant. Stigma is... -
A new measurement of an indirect measure of condom use and its relationships with barriers
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Einav Levy --- , , Belgium Yori Gidron --- , , Belgium Benjamin O. Olley --- , , NigeriaOne of the challenges facing researchers in the domain of human immunodeficiency virus prevention is the assessment of condom use in an unbiased self-reported manner. The current study presents the development and preliminary validation of an indirect condom use test... -
Customary ecological conservation of Mwanda-Marungu Pastoral Commons in Taita Hills, south-west Kenya
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Daniel Maghanjo Mwamidi --- Institute of Environmental Sciences and Technology (ICTA), Autonomous University of Barcelona, Spain Abdirizak Arale Nunow --- Moi University, Kenya Pablo Dominguez --- Institute of Environmental Sciences and Technology (ICTA), Autonomous University of Barcelona, SpainRural commons in East-Africa have historically played key socio-economic and environmental sustainability. Despite growing interest in this arena, there are still surprisingly few studies that examine rural customary management of pastoral communities in East Africa. This is striking given that... -
Restoration of South African estuaries: successes, failures and the way forward
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: L Claassens --- Rhodes University, South Africa JB Adams --- Institute for Coastal & Marine Research, Nelson Mandela University, South Africa NM de Villiers --- Rhodes University, South Africa J Wasserman --- Institute for Coastal & Marine Research, Nelson Mandela University, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaMajor threats to South African estuaries include freshwater flow alterations, urbanisation, habitat transformation, deteriorating water quality, increased biological invasions and resource over-exploitation. Although South African estuary restoration is in its infancy, important lessons have been learnt through past efforts undertaken... -
Average Hewitt-Stromberg and box dimensions of typical compact metric spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bilel Selmi --- University of Monastir, TunisiaThe main aim of this paper is to study average Hewitt-Stromberg and box dimensions of typical compact metric spaces belonging to the Gromov-Hausdorff space equipped with the Gromov-Hausdorff metric. -
Mixed Nash equilibria for continuous games and reverse mathematics
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: NingNing Peng --- Wuhan University of Technology, China Weiguang Peng --- Southwest University, China Takeshi Yamazaki --- Tohoku University, JapanThe program reverse mathematics seeks to identify the minimal axioms needed to prove theorems of ordinary mathematics. In this paper, we develop the reverse mathematics of measure theory and apply these results to the reverse mathematics study of game theory... -
Nonmeasurable Vitali set: variations on theme
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Angelo Bella --- University of Catania, Italy (EU) Daniele Puglisi --- University of Catania, Italy (EU) Alfonso Villani --- University of Catania, Italy (EU)We extend Vitali’s procedure to get nonmeasurable sets. Answering a question of Kharazishvili [4], we present a relatively simple argument for passing from singletons to finite sets. Our result is actually much stronger, as it covers even the case of... -
Validation of Learning Transfer Inventory System (LTIS) in Cameroon teachers: Measurement invariance and latent mean difference across sex
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bekolo Ngo’a Celestin --- Yibin University, China Tchouchu Emmanuel --- University of Cape Coast, Ghana Kouame Dangui Dorcas --- School of Management and Economics (SME) University of Electronic Science and Technology-Chengdu, ChinaThis study investigated the psychometric properties of the Learning Transfer Inventory System (LTIS) in the Cameroonian education system. A sample of 700 in-service teachers (female = 54.8%; mean age = 36 years, SD = 15.41 years) who completed leadership, management,... -
Case assessment and identification of pharmaceutical supply chain performance measures and metrics
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Asrat Mekonnen Gobachew --- University of Bremen, Germany Hans-Dietrich Haasis --- University of Bremen, Germany Eshetie Berhan --- Addis Ababa University, EthiopiaA lot of attention has been paid to performance measurement during the past few decades. There are several reasons for utilizing performance measurement in a business, but the most important one is that, when done right, it will increase productivity... -
When is the composition of functions measurable?
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: F. Javier Fernández --- Universidade de Santiago de Compostela, Spain F. Adrián F. Tojo --- Universidade de Santiago de Compostela, SpainIn this article we explore under which conditions on the interior function the composition of functions is measurable. We also study the sharpness of the result by providing a counterexample for weaker hypotheses. -
Cross-section measures, radii, and Radon curves
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Horst Martini --- University of Technology Chemnitz, Germany Zokhrab Mustafaev --- University of Houston-Clear Lake, USAThe purpose of this paper is to study cross-section measures and their connections to Radon curves in two-dimensional Minkowski spaces. More precisely, we use results on cross-section measures to present, for nomed planes, inner and outer radii of the unit... -
Cross-disciplinary meaning and language for innovation in a business context: A conceptual paper
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Craig Andrew Duff --- Tshwane University of Technology, South Africa Jan Hendrik Dubery --- Tshwane University of Technology, South AfricaIn this conceptual work, we describe cross-disciplinary meaning and language related to the innovation phenomenon located in a business context. Our work attempts to find common meaning and language for innovation that can be applied across all business innovation projects... -
Lepidoptera as a tool for the assessment of human disturbance impacting ecological and taxonomic diversity in the Choke Mountains, Ethiopia
Item type: Journal Article • Journal: African Zoology • Authors: --- Ethiopian Biodiversity Institute, Ethiopia --- University of Brescia, Italy --- University of Brescia, Italy --- University of Molise, ItalyIn tropical countries, frequent anthropogenic disturbances are primary drivers of the reduction in community diversity and local extinction of many insect taxa, including Lepidoptera. We assessed the impact of anthropogenic disturbances on lepidopteran assemblages across five different land use types... -
The modulus of a vector measure
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ben de Pagter --- Delft University of Technology, The Netherlands Werner J. Ricker --- Katholische Universität Eichstätt-Ingolstadt, GermanyIt is known that if L is a Dedekind complete Riesz space and (Ω, Σ) is a measurable space, then the partially ordered linear space of all L-valued, finitely additive and order bounded vector measures m on Σ is also... -
On the extension of the Voronin universality theorem for the Riemann zeta-function
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Antanas Laurinčikas --- Institute of Mathematics, Faculty of Mathematics and Informatics, Vilnius University, LithuaniaIn the paper, we prove a general universality theorem for the Riemann zeta-function ζ (s) on approximation of a class of analytic functions by generalized shifts ζ (s + ia(τ)). Here a(τ) is a real-valued continuous increasing to +∞ function,... -
Exploring upbringing styles of highly resilient students in South Africa: A mixed methods study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Franco Musiello --- , South Africa Zaynab Essack --- , South Africa Alastair van Heerden --- , South AfricaParents play a critical role in supporting the development of resilience in childhood and early adolescence. Most South Africans lack basic resources, so research into and commitment to resilience is of great importance. This study investigated the styles of parenting... -
Level of food safety knowledge among hospitality professionals: an empirical investigation from India
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Patita Paban Mohanty --- Siksha’ O’ Anusandhan University, India Sunil Tiwari --- School of Business Studies, Central University of Kerala, India Hiran Roy --- International School of Hospitality and Tourism Management, Fairleigh Dickinson University, Canada Rupesh Bhavsar --- Institute of Hotel Management, MGM University, IndiaHospitality professionals with insufficient food safety knowledge (FSK) poses a major risk to food safety in their respective organisations. This study aims to investigate the level of food safety knowledge of hospitality professionals, as well as the attributes influencing food... -
Conditional indicators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Dorsaf Cherif --- , Tunisia Emmanuel Lepinette --- Paris Dauphine University, FranceIn this paper, we introduce a large class of (so-called) conditional indicators, on a complete probability space with respect to a sub σ-algebra. A conditional indicator is a positive mapping, which is not necessary linear, but may share common features... -
Morphological variations in the African palm weevil, Rhynchophorus phoenicis (F) (Coleoptera: Curculionidae), in Kenya and Uganda
Item type: Journal Article • Journal: African Zoology • Authors: James P Egonyu --- International Centre of Insect Physiology and Ecology, Kenya Alfonce Leonard --- Tanzania Agricultural Research Institute (TARI) Ukiriguru Centre, Tanzania Chrysantus Mbi Tanga --- International Centre of Insect Physiology and Ecology, Kenya Sevgan Subramanian --- International Centre of Insect Physiology and Ecology, KenyaWe investigated morphological differences in the African palm weevil (Rhynchophorus phoenicis) from Kenya (Busia and Kwale) and Uganda using a LEICA EZ4HD stereo microscope and an absolute digimatic caliper. Ten pronotal colour patterns were recorded, of which two (brown with... -
Some measure-theoretic aspects of fractal functions: invariant measures and function spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Megha Pandey --- , India Tanmoy Som --- , India Saurabh Verma --- , IndiaBarnsley (1986) introduced the concept of fractal interpolation functions (FIFs). Thereafter, numerous theories have been developed concerning FIFs and their properties. In this article, we explore some measure theoretic aspects of FIFs generated by the method given by Barnsley. We... -
Measure pseudo
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The mediating role of transformational leadership in the relationship between institutional pressures and collaboration with commercialization of university research output: A pilot study
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Gregory Tweheyo --- Bustema University, Uganda Ernest Abaho --- Makerere University Business School, Uganda Anju M. Verma --- Texila American University, Guyana Ibrahim Musenze --- Bustema University, UgandaThe purpose of this study is to lay emphasis on Uganda’s universities in light of the examination of how institutional pressures and collaboration influence the commercialization of university research output with the mediating role of transformational leadership. Data were collected... -
A shelf-scale assessment of GLORYS and BRAN ocean reanalysis model outputs for the southern Benguela Upwelling System
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AM Kupczyk --- Fisheries and the Environment (DFFE), South Africa T Lamont --- Fisheries and the Environment (DFFE), South Africa I Halo --- Fisheries and the Environment (DFFE), South Africa CS Russo --- Fisheries and the Environment (DFFE), South Africa T Rixen --- Institute for Geology, Universität Hamburg, Germany N Lahajnar --- Institute for Geology, Universität Hamburg, GermanyThe Benguela Upwelling System, with its high variability and productivity, is challenging to monitor owing to limited in situ ocean observations. Researchers therefore often use ocean reanalysis products to simulate oceanographic conditions. We evaluated the performance of the GLORYS and... -
A systematic review on executive functions in female adolescents with eating disorders: Implications on daily life and relevance to rehabilitation
Item type: Journal Article • Journal: Journal of Child & Adolescent Mental Health • Authors: Hadeel Hamady-Saad --- University of Haifa, Israel Batya Engel-Yeger --- University of Haifa, IsraelBackground: Eating Disorders (ED) are prevalent in female adolescents and have far-reaching effects on daily participation and quality of life (QoL). Daily participation highly depends on Executive Functions (EF). Existing knowledge about EF in ED, as expressed in real life,... -
Large bird collision mortality on power lines in southern Namibia
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: John Pallett --- University of Cape Town, South Africa Peter G Ryan --- University of Cape Town, South AfricaGlobally, power lines cause significant mortalities of birds through collisions and electrocutions, yet this problem has received only sporadic attention in Namibia. Vehicle-based surveys were undertaken every three months for one year to record mortalities of large birds along 349... -
Weyl double-measure pseudo almost periodic functions and Weyl double-measure pseudo almost periodic solutions to semilinear evolution equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yongkun Li --- Department of Mathematics, Yunnan University, People’s Republic of ChinaThis paper aims to address significant gaps in the theory of almost periodic functions and their applications in differential equations. Although Weyl almost periodic functions generalize Bohr almost periodic functions and Stepanov almost periodic functions, the incompleteness of the space...
