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Decline and Mortality of Ocotea bullata Trees in the Southern Cape Forests
Item type: Journal Article • Journal: South African Forestry Journal • Authors: W.A. Lübbe --- Saasveld Forestry Research Centre, C.J. Geldenhuys --- Saasveld Forestry Research Centre,Dying trees of Ocotea bullata (Lauraceae) occurred in small groups in certain areas in the medium-moist forests of the southern Cape. Crown health declined significantly (P > 0,01) in the dying groups, but this was not the general trend for... -
Protein turnover: possible contributing factor in determining drought tolerance in Nicotiana tabacum L.
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L. van Rensburg --- Department of Plant and Soil Sciences, Republic of South Africa G. H.J. Krüger --- Department of Plant and Soil Sciences, Republic of South AfricaDrought stress-induced changes in the water-soluble protein concentration and total number of sulphydryl (-SH) groups were monitored under controlled environmental conditions in four tobacco cultivars (Nicotiana tabacum L.) with different drought tolerances. The drought stress ranged from light (-0.52 MPa)... -
The characterization of Pythium group G occurring on kenaf in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: M.T. Tesfaendrias --- Department of Plant Sciences, South Africa W.J. Swart --- Department of Plant Sciences, South Africa W. Botha --- , South AfricaKenaf provides a source of high quality cellulose fibers and its cultivation is being investigated in South Africa with a view to commercial production. In March 2001, kenaf plants in experimental plots near Bloemfontein, South Africa, developed large, black sunken... -
Genetic diversity analysis of CIMMYT-mid-altitude maize inbred lines using AFLP markers
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: B.W. Legesse --- , Ethiopia A.A. Myburg --- Department of Genetics & Forestry and Agricultural Biotechnology Institute (FABI), South Africa K.V. Pixley --- , Zimbabwe A.M. Botha --- Department of Genetics & Forestry and Agricultural Biotechnology Institute (FABI), South AfricaInformation on genetic variability of maize (Zea mays L.) inbred lines can be helpful in developing high yielding varieties in a breeding programme. The objectives of this study were to investigate genetic diversity among 21 CIMMYT-mid-altitude maize inbred lines and... -
Estimates of combining ability for agronomic traits in pepper (Capsicum annuum L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: L.F. Geleta --- Department of Plant Sciences, South Africa M.T. Labuschagne --- Department of Plant Sciences, South AfricaTwenty-one F1 hybrids were obtained from non-reciprocal crosses among seven genetically diverse pepper genotypes. The parents and F1 (S were evaluated for combining ability and the relative importance of additive and non-additive gene action. The plants were grown in a... -
Use and availability of tree and shrub resources on Maasai communal rangelands near Amboseli, Kenya
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: John Warui Kiringe Moses Makonjio OkelloUse of plant resources is critical in understanding resource dependence among poor rural communities. This study investigated use of tree and shrub resources by a local Maasai community, through discussions and a questionnaire. Twenty-four tree and shrub species were utilised... -
Community Forestry—Project Implementation Through Communities as a Whole or Through Interest Groups?
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Cori Ham --- Faculty of Forestry, Francois Theron --- Department of Public and Development Management,The term community forestry, as in the case of “community development”, can easily be misinterpreted as forestry and a development approach that must be implemented and managed by a community as a whole. The diverse groupings within a community, as... -
Long-Term Antelope Population Monitoring in Southern Cape Forests
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Armin H.W. Seydack --- Department of Water Affairs and Forestry, Republic of South Africa Johan Huisamen --- Department of Water Affairs and Forestry, Republic of South Africa Rynhard Kok --- Department of Water Affairs and Forestry, Republic of South AfricaThe results of population monitoring of two forest antelope species in the Knysna forests (South Africa), the bushbuck (Tragelaphus scriptus) and blue duiker (Philantomba monticola) are presented. Most monitoring was done by faecal pellet group counting, but some track counts,... -
Certification: Situation analysis of private timber growers in South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Cori Ham --- Faculty of Agricultural and Forestry Sciences,Forest certification has become an important aspect to consider in forestry. The South African forestry industry has adopted to a system of forest certification fairly easily. The private timber growers are also expected to implement certification, but can they adapt... -
Dimensions of Social Well-Being in a Motor Manufacturing Organisation in South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Melanie de Jager --- University of South Africa, Sanet Coetzee --- University of South Africa, Deléne Visser --- University of South Africa,The study examined the psychometric properties of the 15-item version of the Social Well-being Scale (SWBS-15: Keyes, 1998) for a South African sample with diversity in culture. The SWBS-15 and a biographical questionnaire were administered to employees in a motor... -
Cancer Patients' Illness Experiences During a Group Intervention
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Mariska Venter --- North-West University, Chris Venter --- North-West University, Karel Botha --- North-West University, Munro Strydom --- Stikland Hospital,The study used secondary data analysis to explore cancer patients' illness experiences during a listening group intervention. Participants were 12 patients (age range 22 to 62 years in age; males = 4; females = 8). Data were analysed using qualitative... -
Counselling for Psychological Well-Being in Persons Living with HIV/AIDS
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Stephen D. Edwards --- University of Zululand, South Africa David J. Edwards --- University of Zululand, South AfricaA psychological well-being counselling program, which provided person centered, group counselling interventions for inpatients infected with HIV/AIDS was evaluated at Amangwe therapeutic village in KwaZulu-Natal, South Africa. The aim was to improve the psychological well-being of participants (9 male, 21... -
Emotional Intelligence and the Identity Negotiation of a Racial Minority Group in a Majority School Context
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree --- University of Pretoria, Maria M. Meijer --- University of Pretoria,This article describes the possible impact of emotional intelligence on identity negotiation of a racial minority group in a majority school context. The study investigated the adjustment and functioning of racial minority groups in majority school contexts, as well as... -
Support Group Needs for People Living with HIV and AIDS (PLWHA) in Communities around Durban, South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shandir Ramlagan --- Human Sciences Research Council, South Africa Karl Peltzer --- Human Sciences Research Council, South Africa Nancy Phaswana-Mafuya --- Human Sciences Research Council, South Africa Jean Francois Aquilera --- UNAIDS, South AfricaThe study constructed a participant centred perspective of what members of a support group for people living with HIV and AIDS (PLWHA) desired from their group meetings. The study sample (n = 34) was from three support groups of PLWHA... -
Combining Leadership Theory with a Psychodynamic Perspective to Explain the Functioning of a Management Team
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: René van Eeden --- University of South Africa,This article illustrates how the processes and dynamics in a management team at a South African organization reflect the leadership and personality profiles of the members of the team. Participants were the 12-member management team (including the general manager). The... -
‘We Do Not Cook, We Only Assist Them’: Constructions of Hegemonic Masculinity Through Gendered Activity
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Kopano Ratele --- University of South Africa/Medical Research Council, Tamara Shefer --- University of the Western Cape, Anna Strebel --- Independent Researcher, Elron Fouten --- Rhodes University,This article discusses how the gendering of activity by boys coincides with, contests or recreates constructions of hegemonic masculinity in the context of South Africa. The study used a qualitative methodology including a series of three focus groups with 14–16... -
Treating Anti-social Behavior in Adolescents: A Comparison of Multi-modal and Psychodynamic Oriented Group Interventions
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Abigail Olubola Taiwo --- University of Ibadan, Nigeria Helen Ohiokhafe Osinowo --- University of Ibadan, NigeriaThis study compared the efficacy of a multimodal intervention (MMI) and a psychodynamic oriented group intervention (POGI) on antisocial behavior among Nigerian adolescents. A pretest-posttest design was used. Forty-one adolescents drawn from the streets of a Nigerian city (N =20),... -
Group Polarization Effects on Decisions by Selected Kenyan Secondary School Disciplinary Panels
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Peter J. O. Aloka --- Catholic University of Eastern Africa, Olaniyi Bojuwoye --- University of the Western Cape,This study investigated social group phenomenon of group polarization effects on disciplinary hearing decisions in selected Kenyan secondary school. The participants were 78 school personnel (females = 42 % and males 58%) from ten secondary schools with both unisex (n... -
African Migrants' Experiences of Xenophobic Violence in South Africa: A Relational Approach
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shingairai Chigeza --- North-West University, Alda De Wet --- University of Limpopo, Vera Roos --- North-West University, Charl Vorster --- North-West University,This study explores the experiences of African migrants in relation to South African citizens in the course of xenophobic violence in South Africa. In a secondary data analysis of a larger research project, 44 migrants (both men and women with... -
Intergroup Attitude Change in South Africa: A Thirty-Seven Year Longitudinal Study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Johan C. Mynhardt --- University of South Africa,This longitudinal study reports intergroup attitude changes in South Africa over a 37-year period beginning from the 1970s when the apartheid dispensation was still firmly in place, following by a second data collection period after a time of political turmoil... -
Measurement Equivalence of the South African Psychological Ownership Questionnaire for Diverse South African Cultural Groups
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Chantal Olckers --- University of Pretoria, Pieter Schaap --- University of Pretoria,This study determined the measurement equivalence of the South African Psychological Ownership Questionnaire (SAPOS) for black and white South African employees. Participants were a non-probability sample of 645 professional level employees from both the private and the public sector (59.4%... -
Natural Alternatives For One Dimensional Median Filtering
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C.H. Rohwer M. WildFor practical purposes median smoothers have often been considered the basic components for the construction of simple non-linear smoothers for removing impulsive noise before any subsequent linear signal extraction from a sequence. Alternatives exist that are computationally convenient, conceptually simpler... -
Maximal Ideals in Near-Rings And Semigroups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: HenryE. Heatherly RalphP. TucciThis paper gives conditions that guarantee that a near-ring or a semi- group has maximal right, left, or two-sided ideals. Stronger results are obtained for those semigroups which are adjoint semigroups of rings. Examples are given which illustrate and delimit... -
Non-cancellation Phenomena in the Class Of Finitely Generated Groups with Finite Commutator Subgroups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Habtay GhebrewoldWe observe some non-cancellation phenomena arising from recent studies of the non-cancellation set χ (G) of a certain group G. Here χ (G) denotes the set of all isomorphism classes of groups H such that H × Z G ×... -
The derivation of cycle index of Sn [3]
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: I.N. Kamuti J.O. Obon'goWe evaluate the cycle index polynomial of the reduced triple group Sn [3]. We also use similar techniques to derive the cycle index polynomial of the triple group Sn (3) which had earlier been found by Oberschelp (see... -
On group orders of rational points of elliptic curves
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Annegret WengWe consider elliptic curves without complex multiplication defined over the rationals or with complex multiplication defined over the Hilbert class field of the endomorphism ring. We examine the distribution of almost prime group orders of these curves when reduced modulo... -
On the Unboundedness of Control Operators for Bilinear Systems
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Abdelali IdrissiThe aim of this work is to study the classes of unbounded linear control operators which ensure the existence and uniqueness of the mild and strong solutions of certain bilinear control systems. By an abstract approach, similar to that adopted... -
Spectral Mapping Theorems For Evolution Semigroups on Spaces of Almost Periodic Functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Walter Hutter Frank Räbiger. We show that the weak spectral mapping theorem holds for evolution semigroups on spaces of periodic functions. Furthermore, we prove the spectral mapping theorem for evolution semigroups on spaces of (weakly asymptotically) almost periodic functions. The results are applied... -
A Lemma On C 0 -semigroups And Applications
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Hugo LeivaIn this note we characterize a large class of C 0-semigroups which can be applied to prove the existence and the uniqueness of the solutions of many systems of partial differential equations. In fact, we apply our result to a... -
Note On the Completeness of a Cap
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: G. HeimbeckLet q be a power of 2. It is shown that every line orbit of length (q 2 + 1)(q + 1) of a cyclic Singer group of PG(3, q) constitutes a complete cap on the Klein quadric of PG(5,... -
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 Termwise Equivalence of The Varieties of L-group Cones and Cancellative Generalized Hoops
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: C.J. Van AltenWe show that the varieties of l-group cones and of cancellative generalized hoops are termwise equivalent. We conclude that the varieties of l-groups and cancellative generalized hoops are categorically equivalent. -
The
Lu Lu -semigroup for Envelopes Of Functions Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. Malkowsky C.H. RohwerIn the theory of non-linear smoothers a semigroup of operators has been established, that structures the rank based selectors in a lattice for the purpose of comparison and analysis. The well known upper and lower envelopes of functions can be... -
Group Invariant Solution And Conservation Law for a Steady Laminar Axisymmetric Free Jet
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: I. Ruscic D.P. MasonA group invariant solution for a steady laminar axisymmetric free jet is derived. The general form of the group invariant solution is first obtained by considering a linear combination of the Lie point symmetry generators of Prandtl's momentum boundary layer... -
Stability of asymptotic properties of Hille-yosida operators under perturbations and retarded differential equations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lahcen ManiarWe give conditions on the strongly continuous semigroup (T 0(t)) t≥0, generated by the part of a Hille-Yosida operator A on X 0 := D(A), and a non-autonomous family of operators (B(t)) t≥0 such that the evolution family (U(t,s)) t≥s≥0,... -
On the way to Frölicher Lie groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: P.P. Ntumba T.A. BatubengeIn this paper, we start by showing that one can obtain by way of diffeomorphisms some classical smooth curves and surfaces. The notion of bundles is also introduced in the category of Frölicher spaces, and one may carry on investigating... -
Permutation actions of the symmetric group Sn on the Groups Zn m and Zn m
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jamshid Moori Kenneth ZimbaLet m and n be positive integers. Let Z m = {0, 1, …, m − 1} be the cyclic group of order m and Z n m be the direct product of n copies of Z m . We... -
FISCHER-CLIFFORD MATRICES OF B (2, n)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jamshid Moori Kenneth ZimbaIn [3] Almestady has presented a combinatorial method for constructing the Fischer-Clifford matrices of the generalized symmetric groups B(m, n), where m and n are positive integers. As a few examples for small values of m and n show, the... -
The Borsuk-Ulam theorem for surfaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: DacibergL. GonçalvesGiven a pair (S, T) whereS is a closed surface and T is a free Z 2 action on S, we classify which pairs have the property that the Borsuk-Ulam theorem holds with respect to R 2. In particular if... -
(Φ, M)–extensions of near-rings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mark FaragIn this paper, we define and study a generalization of matrix, polynomial, and group near-rings. New results on ideal essentiality and lying over are obtained. -
Right radicals for right distributively generated near-rings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J.F.T. Hartney D.S. RusznyakFor right near-rings the left representation has always been considered the natural one. However, Hanna Neumann [6] constructed her right near-rings by writing the reduced free group on the left of the near-ring. In [2] and [8] Neumann's ideas are... -
On some binary codes from orthogonal geometry of characteristic two
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: B.G. RodriguesIn their natural primitive rank-3 action on the singular and non-singular points of the projective space of dimension 2m − 1, the simple orthogonal groups O ε 2m (F2), for ε = ±1 and m ≥ 3 have... -
Continued fractions and the geometric decomposition of modular transformations
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Meira HockmanIt is known that the modular group Γ = PSL (2,Z) and the Farey tessellation F of the hyperbolic plane H by an ideal triangle Λ0 = {0,1,∞} are connected by the relationship F = {g(I) : g ∈ Γ}... -
Minimal generating sets of groups, rings, and fields
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lorenz Halbeisen Martin Hamilton Pavel RůžičkaA subset X of a group (or a ring, or a field) is called generating, if the smallest subgroup (or subring, or subfield) containing X is the group (ring, field) itself. A generating set X is called minimal generating, if... -
On the Epireflective Hull of Topological Nearness Groups in the Category of Nearness Groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: LamarH. Bentley VijayaL. GompaTo find the specific nature of the objects that are in the epireflective hull of the symmetric topological spaces in the category of nearness spaces is a long open problem. See [BCH05] for more information. Here we consider topological nearness... -
On the stabilizers of the minimum-weight codewords of some binary codes from graphs on triples
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: B.G. RodriguesWe determine the stabilizers of the minimum-weight codewords for the binary codes C 2(n) and C 2(n)⊥ obtained from an adjacency matrix of the graph A 2(n) for n ≥ 7 and odd, with vertex set Ω{3}, and adjacency defined... -
Lattice-Valued Convergence Ring and Its Uniform Convergence Structure
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: T.M.G. Ahsanullah --- Department of Mathematics, Saudi ArabiaConsidering L a frame, we introduce the notion of stratified L-neighborhood topological ring, produce some characterization theorems including its Luniformizability. With the help of the notions of stratified convergence structures attributed to Gunther Jäger [10], we introduce and study various... -
Abelian Groups with a Minimal Generating Set
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Pavel Růžčka --- Department of Algebra, Sokolovská, Czech RepublicWe study the existence of minimal generating sets in Abelian groups. We prove that Abelian groups with minimal generating sets are not closed under quotients, nor under subgroups, nor under in.nite products. We give necessary and su.cient conditions for existence... -
Ramsey Functions for Symmetric Subsets in Compact Abelian Groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mareli Korostenski --- , South Africa Yuliya Zelenyuk --- , South AfricaGiven a compact group G and r ∈ N, let sr(G) denote the least upper bound of real ϵ > 0 such that for every measurable r-coloring of G, there exists a monochrome symmetric subset of measure ≥ ϵ. A... -
On algorithmic aspects of the l-torsion of Brauer groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lin Wang --- School of Mathematical Sciences, P.R. China Mao-Zhi Xu --- School of Mathematical Sciences, P.R. ChinaWe study the algorithmic aspects of the l-torsion of the Brauer group Br(K) of a field K which contains the l-th roots of unity µ l, only provided with basic operations on the elements of K. We use a primitive... -
Codes related to line graphs of triangular graphs and permutation decoding
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Washiela Fish --- Department of Mathematics and Applied Mathematics, South Africa Khumbo Kumwenda --- Department of Mathematics and Applied Mathematics, South Africa Eric Mwambene --- Department of Mathematics and Applied Mathematics, South AfricaFor any prime p, we consider p-ary linear codes obtained from the row span of incidence matrices of line graphs of triangular graphs and adjacency matrices of their line graphs. We determine parameters of the codes, their automorphism groups and... -
Semigroups of transformations with fixed sets
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Preeyanuch Honyam --- Department of Mathematics, Faculty of Science, Thailand Jintana Sanwong --- Department of Mathematics, Faculty of Science, ThailandLet T (X) denote the semigroup (under composition) of transformations from X into itself. For a fixed subset Y of X, let Fix(X, Y) be the set of all self-maps on X which fix all elements in Y. Then Fix(X,... -
Montel resolvents and uniformly mean ergodic semigroups of linear operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: AngelaA. Albanese --- Dipartimento di Matematica e Fisica “E. De Giorgi”, Italy José Bonet --- Instituto Universitario de Matemática Pura y Aplicada IUMPA, Spain WernerJ. Ricker --- Math.-Geogr. Fakultät, GermanyFor C 0-semigroups of continuous linear operators acting in a Banach space criteria are available which are equivalent to uniform mean ergodicity of the semigroup, meaning the existence of the limit (in the operator norm) of the Cesàro or Abel... -
The automorphism groups of domains in complex space: a survey
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: StevenG. Krantz --- Department of Mathematics, U.S.AWe consider recent developments in the study of automorphism groups of domains in complex space. Particular attention is paid to results with a basis in geometry. -
Reaching disenfranchised youth and mobile populations in Ghana through voluntary counselling and testing services for HIV
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Susi Wyss Joyce Ablordeppey Jane Okrah Abigail KyeiThis paper documents the evaluation of a 20-month project to provide voluntary counselling and testing (VCT) to a mobile population of youth surrounding the Agbogbloshie market in Accra, Ghana. The specific objectives of the evaluation were to determine: 1) to... -
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... -
Responses to VCT for HIV among young people in Kampala, Uganda
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Eva-Britta Råssjö Elisabeth Darj Joseph Konde-Lule Pia OlssonAttitudes to voluntary counselling and testing (VCT) for HIV among young men and women in a slum area of Kampala, Uganda, were studied through 22 individual semi-structured interviews and 5 focus group discussions. Attitudes to VCT ranged from having no... -
Boundaries of care: the role of the school in supporting vulnerable children in the context of HIV and AIDS
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ursula HoadleyThis paper is a response to a growing vision of schools as sites of care and support for vulnerable children in the context of HIV and AIDS. The aim is to interrogate this notion and to raise some key issues... -
Vulnerability to HIV infection among Luo female adolescent orphans in Western Kenya
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Erick Otieno NyambedhaLarge-scale surveys have reported that about 55% of orphans worldwide are adolescents. In Kenya, the majority of HIV-infected adolescents are females. The current study used the anthropological methods of in-depth case studies to analyse how migratory life situations of individual... -
Bereavement, silence and culture within a peer-led HIV/AIDS-prevention strategy for vulnerable children in South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Ingrid Van der Heijden --- Child, Youth, Family and Social Development Research Programme, South Africa Sharlene Swartz --- Child, Youth, Family and Social Development Research Programme, South AfricaIn addressing the psychosocial effects of the HIV and AIDS pandemic among vulnerable children, the issue of bereavement appears inadequately addressed. Amid the global discourse on children orphaned and made vulnerable by HIV and AIDS, this paper explores how cultural... -
HIV and AIDS vulnerability in fishing communities in Mangochi district, Malawi
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Joseph Nagoli --- , Katrien Holvoet --- , Michelle Remme --- ,The fisheries sector contributes significantly to Malawi's national economy and to the livelihoods of the poor as certain activities in the sector have relatively low barriers to entry. Various studies have shown that the fisheries sector suffers from high HIV... -
Negotiating therapeutic citizenship and notions of masculinity in a South African village
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Sakhumzi Mfecane --- Department of Anthropology and Sociology, South AfricaThe article explores the idea of therapeutic citizenship in relation to the experiences of men who attend support groups for people living with HIV or AIDS (PLHIV). At a rural South African health facility offering free antiretroviral (ARV) medicines, support... -
Gender vulnerabilities, spousal abuse and the incidence of HIV in Lesotho:a case for an integrative rights-based approach
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: 'Dejo Olowu --- , South AfricaThe article posits that imbalances in gender relations are influencing two distinctive yet connected crises for women in Lesotho: the HIV epidemic and spousal abuse. The overarching premise is that as spousal abuse is increasingly recognised and as HIV infections... -
Migration status, reproductive health knowledge and sexual behaviour among female out-of-school adolescents in Iwaya community, Lagos, Nigeria
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Michael ON Kunnuji --- Department of Sociology, Nigeria Samual Adejoh --- Department of Sociology, Nigeria Uwemedimo Esiet --- Action Health Incorporated (AHI), Nigeria Adenike Esiet --- Action Health Incorporated (AHI), NigeriaReproductive health is an essential aspect of the wellbeing of adolescents. Therefore reproductive health knowledge and sexual behaviour deservedly attract the attention of researchers, programme planners and policy implementers working with young people. Yet in Nigeria, little is known about... -
Ostrich recruitment dynamics in relation to rainfall in the Mara–Serengeti ecosystem
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: JosephO Ogutu --- Institute of Crop Science, Germany Hans-Peter Piepho --- Institute of Crop Science, Germany HollyT Dublin --- Species Survival Commission, International Union for Conservation of Nature and Natural Resources, c/o Centre for Biodiversity Conservation, South AfricaAnimal population dynamics can be driven by rainfall variability through its influence on habitat suitability, availability and nutritional sufficiency of forage. To understand how rainfall influences ostriches, we related changes in ostrich recruitment in the Mara–Serengeti ecosystem to rainfall. Over... -
Reproductive biology and growth of the yellowbelly rockcod Epinephelus marginatus (Serranidae) from South-East Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ST FennessyInvestigation of the reproductive biology and growth of the yellowbelly rockcod Epinephelus marginatus from South-East Africa confirms that the species is a monandric protogynous hermaphrodite, i.e. males are derived from females, probably as a result of environmental or social cues... -
Migration redefined? Seasonality, movements and group composition of humpback whales Megaptera novaeangliae off the west coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Barendse --- , South Africa PB Best --- , South Africa M Thornton --- , South Africa C Pomilla --- , USA I Carvalho --- , USA HC Rosenbaum --- , USAThe migration of Southern Hemisphere humpback whales Megaptera novaeangliae between their feeding and breeding areas has thus far been considered a highly predictable and seasonal event. However, previous observations on the humpbacks that pass through the nearshore waters of the... -
The waters of São Tomé: a calving ground for West African humpback whales?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Carvalho --- Faculdade de Ciências do Mar e Ambiente, Portugal C Brito --- Centro de História de Além-Mar, Faculdade de Ciências Sociais e Humanas, Portugal ME dos Santos --- Eco-Ethology Research Unit, ISPA, Portugal HC Rosenbaum --- Sackler Institute for Comparative Genomics, USAIn the Southern Hemisphere, humpback whales Megaptera novaeangliae feed in Antarctic waters during the austral summer and migrate to their breeding grounds in subtropical and tropical waters during the winter. Historical whaling records suggest that the Archipelago of São Tomé... -
Economic dimension of the collapse of the ‘false cod’ Epinephelus aeneus in a context of ineffective management of the small-scale fisheries in Senegal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thiao --- , Senegal C Chaboud --- , France A Samba --- , Senegal F Laloë --- , France PM Cury --- , FranceSmall-scale fisheries are often seen as a solution for ensuring sustainability in marine exploitation. They are viewed as a suitable alternative to industrial fisheries, particularly when considering their social and economic importance in developing countries. Here, we show that the... -
Bottlenose dolphin Tursiops truncatus at São Tomé Island (São Tomé and Príncipe) — relative abundance, site fidelity and social structure
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Pereira --- Escola de Mar, Portugal F Martinho --- Escola de Mar, Portugal C Brito --- Escola de Mar, Portugal I Carvalho --- Escola de Mar, PortugalAlthough the bottlenose dolphin Tursiops truncatus is one of the most common cetacean species around São Tomé Island, Gulf of Guinea, little research has focused on this species in this region. This study investigated the population of bottlenose dolphins around... -
Relationships between diameter and height of trees in natural tropical forest in Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Wilson A Mugasha --- Department of Ecology and Natural Resource Management, Norway Ole M Bollandsås --- Department of Ecology and Natural Resource Management, Norway Tron Eid --- Department of Ecology and Natural Resource Management, NorwayThe relationship between tree height (h) and tree diameter at breast height (dbh) is an important element describing forest stands. In addition, h often is a required variable in volume and biomass models. Measurements of h are, however, more time... -
Reasons for multiple sexual partnerships: perspectives of young people in Zambia
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Chama Nshindano Pranitha MaharajEpidemiological evidence so far suggests that multiple sexual partnerships are an important factor driving the HIV epidemic. Recently, there has been renewed emphasis on fidelity and partner-reduction in preventing HIV infections. Like many countries in sub-Saharan Africa, Zambia is facing... -
Migration, pastoralists, HIV infection and access to care: the nomadic Fulani of northern Nigeria
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Abdulrazaq Garba Habib Jibril JumareThe burden of HIV infection among the nomadic Fulani of northern Nigeria is unknown. Migration — a way of life for this population — is known to increase the rate of HIV transmission and may limit individuals' access to treatment... -
Wellness programme and health policy development at a large faith-based organisation in Khayelitsha, South Africa
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: ElizabethD ArendThis paper presents a case study of wellness programme and health policy development based on an HIV/AIDS organisation's Khayelitsha site in the Western Cape Province, South Africa. The study examines the different challenges that the organisation faces in relation to... -
Algal communities associated with aquatic macrophytes in some artificial ponds in Nyando District, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Balthazar Mpawenayo Christine CocquytThis study describes the algal communities of six ponds colonised by aquatic macrophytes in Nyanza Province, Kenya. Plankton samples were collected from the water column and epiphytic samples from macrophytes such as Azolla, Pistia, Nymphaea, Ipomoea and Ludwigia. Pond pH,... -
Bioaccumulation of platinum group metals in dolphins, Stenella sp., caught off Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DK EssumangPlatinum group metals (PGMs) concentrations were measured in the tissues= of dolphins (Stenella sp.) caught along the Ghanaian coastline. Tissues from specimens caught by fishermen from Dixcove, western Ghana, were analysed in 2006 for palladium (Pd), platinum (Pt) and rhodium... -
Fischer-Clifford Matrices of the Non-Split Group Extension 26˙U 4(2)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Faryad Ali Jamshid MooriThe Harada-Norton group HN is a sporadic simple group of order 273030912000000 equal to 214 × 36 × 56 × 7 × 11 × 19. It has 14 conjugacy classes of maximal subgroups and in the present paper we construct... -
On the Ranks of Janko Groups J 1, J 2, J 3 and J 4
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Faryad Ali Jamshid MooriIf G is a finite group and X a conjugacy class of elements of G, then we define rank(G : X) to be the minimum number of elements of X generating G. In the present paper we study the rank(Ji... -
The First Group (co)homology of a Group G with Coefficients in Some G–Modules
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: LucíliaD. Borsari DacibergL. GonçalvesLet G be a group. We give some formulas for the first group homology and cohomology of a group G with coefficients in an arbitrary G–module Ž. More explicit calculations are done in the special cases of free groups, abelian... -
Frame valued stratified generalized convergence groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: T.M.G. Ahsanullah Jawaher Al-MufarrijFollowing the notion of stratified L-fuzzy convergence space of Gunther Jäger [Quaest. Math. 24 (2001), 501–517], we introduce the notion of a stratified L-generalized convergence group, and look into some other objects, namely, stratified L-Kent convergence groups, and stratified L-principal... -
Designs from the groups PSL2(q) for certain q
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.R. Darafsheh --- School of Mathematics, College of Science, Iran A. Iranmanesh --- Department of Mathematics, Faculty of Basic Sciences, Iran R. Kahkeshani --- Department of Mathematics, Faculty of Basic Sciences, IranUsing primitive actions of the projective special linear groups PSL2(q), q = 37, 41, 43, 47 and 49 some 1-designs are constructed. The automorphism group of all the constructed designs are found. It is shown that all subgroups of the... -
Algebraic Entropy of Shift Endomorphisms on Abelian Groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maryam Akhavin --- Faculty of Mathematical Sciences, Iran Dikran Dikranjan --- Dipartimento di Matematica e Informatica, Italy Anna Giordano Bruno --- Dipartimento di Matematica e Informatica, Italy Arezoo Hosseini --- Department of Mathematics, Faculty of Science, Iran Fatemah Ayatollah Zadeh Shirazi --- Faculty of Mathematics, Statistics and Computer Science, College of Science, IranFor every finite-to-one map λ : Γ → Γ and for every abelian group K, the generalized shift σλ of the direct sum ⊕Γ K is the endomorphism defined by (x i ) iεΓ ↦ (x λ(i)) iεΓ [3]... -
Understanding participation in a hospital-based HIV support group in Limpopo Province, South Africa
Item type: Journal Article • Journal: South African Family Practice • Authors: AS Heyer --- , Australia LH Mabuza --- Department of Family Medicine and PHC, South Africa ID Couper --- Division of Rural Health, Department of Family Medicine, South Africa GA Ogunbanjo --- Department of Family Medicine and PHC, South AfricaBackground: -
Focus group discussion with private sector doctors in the eThekwini Metro of KwaZulu-Natal on the management of HIV/AIDS patients
Item type: Journal Article • Journal: South African Family Practice • Authors: P Naidoo --- School of Pharmacy and Pharmacology, South AfricaBackground: Highly active antiretroviral treatment (HAART) is essential in the treatment of HIV/AIDS; however, a holistic approach to HIV/AIDS management is important. This study was done to confirm the findings of two studies done previously in the eThekwini Metro of... -
Views of patients on a group diabetes education programme using motivational interviewing in South African primary care: a qualitative study
Item type: Journal Article • Journal: South African Family Practice • Authors: S Serfontein --- Division of Family Medicine and Primary Care, RJ Mash --- Division of Family Medicine and Primary Care,Objectives: This study was a qualitative assessment of a diabetes group education programme presented in community health centres of the Cape Town Metro District. The programme offered four sessions of group education and was delivered by trained health promoters using... -
Social comparison influences on disciplinary panels: a brief qualitative study in Kenyan secondary schools
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Peter J.O. Aloka --- Department of Psychology & Educational Foundations, Kenya Olaniyi Bojuwoye --- Department of Educational Psychology, South AfricaThis study investigated the influences of social comparisons on group polarization in decision making among members of selected Kenyan secondary school disciplinary panels. Ten participants from 10 selected secondary school disciplinary panels were involved. Semi-structured interviews were used to collect... -
Diagnosing the sexual pattern of Diplodus cervinus hottentotus (Pisces: Sparidae) from southern Angola
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Winkler --- Department of Ichthyology and Fisheries Science, South Africa CV Santos --- Faculdade Ciências da Universidade Agostinho Neto (FCUAN), Angola WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe sexual pattern of Diplodus cervinus hottentotus was investigated in southern Angola. Females were significantly smaller and found in greater numbers, with an adult sex ratio of 1.0:0.7, F:M. Histological observations of preserved gonads indicated that the species is a... -
On the ranks of Fi22
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Faryad Ali --- Department of Mathematics, Saudi ArabiaIf G is a finite group and X a conjugacy class of elements of G, then we define rank(G:X) to be the minimum number of elements of X generating G. Moori investigated rank(Fi22:X), where X is a conjugacy class of... -
Factors influencing female doctors’ career decisions at Tshwane District Hospital, Pretoria
Item type: Journal Article • Journal: South African Family Practice • Authors: Annelet Kruger --- Department of Family Medicine and Primary Care, South Africa Christie Bezuidenhout --- Department of Family Medicine and Primary Care, South AfricaIntroduction: Most doctors at Tshwane District Hospital in Pretoria are women who experience difficulty combining a career with family responsibilities because of lack of flexitime or part-time posts. They are also frustrated by the hospital management’s apparent indifference to their... -
Haulout site selection by southern elephant seals at Marion Island
Item type: Journal Article • Journal: African Zoology • Authors: T. W. Mulaudzi --- Department of Zoology and Entomology, South Africa G. J. G. Hofmeyr --- National Zoological Gardens of South Africa, South Africa M. N. Bester --- National Zoological Gardens of South Africa, South Africa S. P. Kirkman --- National Zoological Gardens of South Africa, South Africa P. A. Pistorius --- National Zoological Gardens of South Africa, South Africa F. C. Jonker --- National Zoological Gardens of South Africa, South Africa A. B. Makhado --- National Zoological Gardens of South Africa, South Africa J. H. Owen --- Department of Statistics, South Africa R. J. Grimbeek --- Department of Statistics, South AfricaUsing data from an ongoing mark–resight programme at Marion Island, we tested empirically whether southern elephant seals prefer certain terrestrial sites to others during the breeding, moulting and winter haulouts, and whether the pattern of site use is the same... -
The first record of Tardigrada from Zambia, with a description of Doryphoribius niedbalai n.sp. (Eutardigrada: Isohypsibiidae, the evelinae group)
Item type: Journal Article • Journal: African Zoology • Authors: Krzysztof Zawierucha --- Department of Animal Taxonomy and Ecology, Faculty of Biology, Poland Łukasz Michalczyk --- Department of Entomology, Poland Łukasz Kaczmarek --- Department of Animal Taxonomy and Ecology, Faculty of Biology, PolandIn three mixed samples (mosses and leaf litter) collected in Zambia (southern Africa), forty-three specimens and six eggs of eutardigrades were found. Among them, 29 specimens belonged to a new species of the family Isohypsibiidae, Doryphoribius niedbalai n.sp. The new... -
Is a reduction in the individual vigilance of mothers a key evolutionary driver of group formation in white rhinos?
Item type: Journal Article • Journal: African Zoology • Authors: Adrian M. Shrader --- School of Life Sciences, University of KwaZulu-Natal, South Africa Julie F. Post --- Department of Zoology & Entomology, South Africa Nicole Hagenah --- School of Life Sciences, University of KwaZulu-Natal, South Africa Philip W. Bateman --- Department of Environment and Agriculture, Western AustraliaA key benefit and evolutionary driver of group living is reduced predation risk. In white rhinos, groups comprise adult females, their calves and one to six unrelated subadults. Subadults benefit from group living through exposure to novel areas, and protection... -
Ecology of diplostomid (Trematoda: Digenea) infection in freshwater fish in southern Africa
Item type: Journal Article • Journal: African Zoology • Authors: Andri Grobbelaar --- Department Zoology and Entomology, South Africa Liesl L. Van As --- Department Zoology and Entomology, South Africa Hennie J.B. Butler --- Department Zoology and Entomology, South Africa Jo G. Van As --- Department Zoology and Entomology, South AfricaThe complex life cycles of most trematode parasites include three hosts. The first intermediate host is a snail, the second is normally a teleost fish and a piscivorous bird serves as the definitive host. Lymnaeid snails are most likely to... -
Life design counselling effects on the career adaptability of learners in a selective independent school setting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree --- Faculty of Education, South Africa Claire Symington --- Faculty of Education, South AfricaThis collective case study applied life design counselling to augment the career adaptability of learners in a South African independent school setting. Five purposively selected learners attending Grade 11 (age range: 16–18) completed eight group-based life design counselling sessions. Data... -
Recent evidence on the persistence of fund performance – A note
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: D Bradfield --- Department of Statistical Sciences, J Swartz --- University of Cape Town,This note highlights recent evidence on the persistence of fund performance in South Africa, throwing new light on the 1985–1995 study conducted by Meyer (1997). Our analysis on the persistence of South African fund performance is based on the General... -
Taxation students’ perceptions of open-book assessment prior to the qualifying examination of South African chartered accountants
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: H du Preez --- Department of Economics and Management, C S du Preez --- Department of Economics and Management,In this study taxation students’ perceptions of open-book assessment, prior to their exposure to open-book assessment in the qualifying examination of South African chartered accountants, is explored. A focus group was conducted using the Interactive Qualitative Analysis methodology. In this... -
Taxation students’ perceptions of open-book assessment: a follow-up interactive qualitative analysis
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Hanneke Du Preez --- Department of Taxation, South AfricaStudents’ perceptions of a particular assessment type seems to influence their attitude to preparing for and taking the assessment. The literature suggests that open-book assessment allows a better understanding of the content of a subject area, thus better preparing students... -
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... -
A critical analysis of the new definition of the holding-subsidiary relationship
Item type: Journal Article • Journal: De Ratione • Authors: G K Everingham --- University of Cape Town, R D Jooste --- University of Cape Town,This article reviews the new definition of the holding-subsidiary relationship, introduced by amendment in 1992 in South Africa into the Companies Act of 1973. It traces the efforts of the legislature, influenced by developments in the United Kingdom, to produce... -
Do aquatic macroinvertebrate communities respond to land-use effects in the Wilge River, Mpumalanga, South Africa?
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: K Farrell --- Golder Associates Africa (Pty) Ltd, South Africa JHJ van Vuren --- Department of Zoology, South Africa M Ferreira --- Department of Zoology, South AfricaAquatic macroinvertebrate community responses to the effects of various land uses were investigated in 2010–2013 in the Wilge River, a tributary of the Olifants River, South Africa. The catchment area is characterised by agricultural, mining and industrial activities, which potentially... -
Political intolerance: the role of intergroup threat and negative intergroup emotion
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Melina Ojiambo --- Department of Psychology, South Africa Johann Louw --- Department of Psychology, South AfricaThis study investigated whether the perception of intergroup threat, and intergroup emotion, are related to political intolerance. One hundred and twenty three South African undergraduate students (females = 76%; males = 24%; White = 65%; Coloured = 24%; Indian = 8%; Chinese = 2%; mean age = 19.8, SD = 3.03 years) were randomly assigned... -
Life design counselling effects on the career adaptability of learners in a selective independent school setting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Jacobus G. Maree --- Faculty of Education, South Africa Claire Symington --- Faculty of Education, South AfricaThis collective case study applied life design counselling to augment the career adaptability of learners in a South African independent school setting. Five purposively selected learners attending Grade 11 (age range: 16–18) completed eight group-based life design counselling sessions. Data... -
Recent evidence on the persistence of fund performance—A note
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: D Bradfield --- Quantitative Research, Cadiz Holdings, J Swartz --- University of Cape Town,This note highlights recent evidence on the persistence of fund performance in South Africa, throwing new light on the 1985–1995 study conducted by Meyer (1997). Our analysis on the persistence of South African fund performance is based on the General... -
Prostate cancer profile and risk stratification of patients treated at Universitas Annex Department of Oncology, Bloemfontein, Free State, during 2008 to 2010
Item type: Journal Article • Journal: South African Family Practice • Authors: A Sherriff --- Department of Oncology, South Africa N Da Costa --- Faculty of Health Sciences, School of Medicine, South Africa A Engelbrecht --- Faculty of Health Sciences, School of Medicine, South Africa A Li --- Faculty of Health Sciences, School of Medicine, South Africa N Price --- Faculty of Health Sciences, School of Medicine, South Africa G Joubert --- Faculty of Health Science, Department of Biostatistics, South AfricaBackground: Prostate cancer commonly occurs in older men. Since TNM staging excludes prostate-specific antigen (PSA) level and Gleason score, patients with prostate cancer are divided into risk groups when deciding on treatment options. This study determined the profile and risk... -
Cultural diversity, group formation and alienation as constraints on employee interaction in a wholesale company
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Stephné Herselman --- Department of Anthropology and Archaeology,Although a relatively new concept in anthropology, the notion of cultural alienation appears to be a useful instrument to explain aspects of workplace interaction and behaviour. This article deals with alienation as a function of cultural diversity in a wholesale... -
Monica Wilson (1908–1982) and social change
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: David Brokensha --- Department of Social Anthropology,Monica Wilson's writings contain a wealth of material on social change, on how institutions and groups and values change. Based on extensive fieldwork among the Pondo of the Eastern Cape and the Nyakyusa of Tanzania, her ethnographies and many articles... -
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... -
A retrospective review of group B streptococcal infection in the Metro East area of the Western Cape province: 2010 to 2011
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: L Frigati --- Department of Paediatrics, Tygerberg Children’s Hospital, J L van der Merwe --- Department of Obstetrics and Gynaecology, Tygerberg Hospital, J Harvey --- Head Statistician, Centre for Statistical Application, H Rabie --- Department of Paediatrics, Tygerberg Children’s Hospital, G Theron --- Department of Obstetrics and Gynaecology, Tygerberg Hospital, M F Cotton --- Department of Paediatrics, Tygerberg Children’s Hospital,Effective strategies to prevent infant death rely on knowledge of prevalent pathogens. Recent publications have drawn attention to limited data on the contribution of group B streptococcal infection to neonatal and infant mortality in resource-restricted settings. The aim was to... -
Population status of black and white colobus monkeys (Colobus guereza) in Kakamega Forest, Kenya: are they really on the decline?
Item type: Journal Article • Journal: African Zoology • Authors: Peter J. Fashing --- Department of Ecology, Evolution, and Environmental Biology, U.S.AEastern black and white colobus monkeys, or guerezas (Colobus guereza), are among the few primate species that have traditionally been regarded as not being adversely affected by habitat degradation. This view was recently challenged by von Hippel et al. (2000)... -
Intraspecific associations of individual brown-headed parrots (Poicephalus cryptoxanthus)
Item type: Journal Article • Journal: African Zoology • Authors: Stuart Taylor --- School of Botany and Zoology, University of KwaZulu Natal, South Africa Michael R. Perrin --- School of Botany and Zoology, University of KwaZulu Natal, South AfricaBrown headed parrots (Poicephalus cryptoxanthus) are often seen in large feeding flocks during summer and in pairs during winter. This has led to the belief that pair bonds within the species are ephemeral, lasting as long as the breeding season... -
Intergroup contact experience and frequency as predictors of cross-racial attitudes
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Elirea Bornman --- Department of Communication Science, South AfricaThis study examined the relationships between contact frequency, experiences of intergroup contact and a number of demographic intergroup variables. A telephone survey was conducted among 544 blacks (57.5% male; 42.5% female) and 478 whites (44.6% male; 55.4% female). Three CHAID... -
The number of symmetric colorings of the dihedral group D3
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Iryna Kashuba --- Institute of Mathematics, University of S̃ao Paulo, Brazil Yuliya Zelenyuk --- School of Mathematics, South AfricaWe compute the number of symmetric r-colorings and the number of equivalence classes of symmetric r-colorings of the dihedral group D3. -
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%;... -
‘Shh … quiet! Here they come.’ Black employees as targets of office gossip
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Nasima M. H. Carrim --- Human Resource Management Department, Faculty of Economic and Management Sciences,This study explored black employees’ experiences of racial profiling by their white peers through the medium of gossip at a historically white, South African university. Participants consisted of 24 black employees (males = 50%, females = 50%; support staff =... -
On character amenability of semigroup algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S.M. Maepa --- , , South Africa O.T. Mewomo --- , , South AfricaWe study the character amenability of semigroup algebras. We work on general semigroups and certain semigroups such as inverse semigroups with a finite number of idempotents, inverse semigroups with uniformly locally finite idempotent set, Brandt and Rees semigroup and study... -
Symmetric Intersections of Rauzy Fractals
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Tarek Sellami --- , , Tunisia Víctor F. Sirvent --- , , VenezuelaIn this article we study symmetric subsets of Rauzy fractals of unimodular irreducible Pisot substitutions. The symmetry considered is reflection through the origin. Given an unimodular irreducible Pisot substitution, we consider the intersection of its Rauzy fractal with the Rauzy... -
The risk of developing malnutrition in people living with HIV/AIDS: Observations from six support groups in Botswana
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Ms. Nnyepi --- Department of Home Economics Education, BotswanaObjectives: The objectives of this study were 1) to determine the proportion of people living with HIV/AIDS (PLWHA) at risk of developing malnutrition, 2) to determine the prevalence of malnutrition (BMI < 18.5 kg/m2), and 3) to describe the dietary... -
South African dietary total antioxidant capacity based on secondary intake data in relation to dietary recommendations
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: H Louwrens --- Department of Agricultural and Food Sciences, South Africa F Rautenbach [AN0001] I Venter --- Faculty of Applied Sciences,Objective: In this exploratory study, the average adult South African dietary total antioxidant capacity (TAC) was estimated using secondary data and was evaluated against that determined for dietary intake recommendations. -
Ethnic differences in age of onset and prevalence of disordered eating attitudes and behaviours: a school-based South African study
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: J. Mould --- Unit for Professional Training and Service in the Behavioural Sciences (UNIBS), Aa Grobler --- Unit for Professional Training and Service in the Behavioural Sciences (UNIBS), Dc Odendaal --- bWiehahn Formwork and Scaffolding, L. De Jager --- Unit for Professional Training and Service in the Behavioural Sciences (UNIBS),Objectives: To determine the age of onset and prevalence figures for disordered eating for diverse ethnic groups among a sample of South African schoolgirls. -
Encounter group counsellor training with pre-service industrial psychologists: A pilot study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Lené I. Jorgensen --- WorkWell, Research Unit for Economic and Management Sciences, School of Human Resource Sciences, South AfricaThis study explored the efficacy of an encounter group counsellor training protocol to prepare pre-service industrial-organisational (I-O) psychologists as workplace counsellors. The participants included 48 master’s degree students enrolled for I-O professional education at a South African university over the... -
Group B streptococcus colonisation in pregnant women at Dr. George Mukhari Hospital, South Africa
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: MC Monyama --- Department of Life and Consumer Sciences, South Africa JY Bolukaoto --- Department of Life and Consumer Sciences, South Africa MO Chukwu --- Department of Life and Consumer Sciences, South Africa MRB Maloba --- Department of Microbiological Pathology, South Africa SR Moyo --- Department of Health Sciences, Faculty of Health and Applied Sciences, Namibia RT Mavenyengwa --- Department of Health Sciences, Faculty of Health and Applied Sciences, Namibia M Nchabeleng --- Department of Microbiological Pathology, South Africa SL Lebelo --- Department of Life and Consumer Sciences, South AfricaThe aim of the study was to estimate group B streptococcus (GBS) colonisation in pregnant mothers using selective enrichment broth and solid media for culturing GBS. Vaginal and rectal swabs were collected from 413 pregnant women for GBS culture at... -
Determinants and opportunities for commercial marketing of beef cattle raised on communally owned natural pastures in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Tawanda Marandure --- Department of Animal Science, South Africa Cletos Mapiye --- Department of Animal Science, South Africa Godswill Makombe --- University of Limpopo, Turfloop Graduate School of Leadership, South Africa Baldwin Nengovhela --- Agricultural Research Council – Animal Production Institute, South Africa Phillip Strydom --- Agricultural Research Council – Animal Production Institute, South Africa Voster Muchenje --- Department of Livestock and Pasture Science, South Africa Kennedy Dzama --- Department of Animal Science, South AfricaThe objective of this study was to examine the factors influencing smallholder producers’ potential to sell cattle and identify marketing opportunities for sustainable beef production in South Africa. A total of 95 structured questionnaires was administered to the Ncorha and... -
Key maize production constraints and farmers’ preferred traits in the mid-altitude maize agroecologies of northern Tanzania
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Lameck Nyaligwa --- African Centre for Crop Improvement, South Africa Shimelis Hussein --- African Centre for Crop Improvement, South Africa Mark Laing --- African Centre for Crop Improvement, South Africa Habteab Ghebrehiwot --- African Centre for Crop Improvement, South Africa Beyene A Amelework --- African Centre for Crop Improvement, South AfricaMaize productivity in Tanzania is very low, owing to various biotic and abiotic production constraints. Examining production constraints and farmers’ preference in maize-growing agroecologies will assist in designing improvement strategies based on farmers’ priorities. The objective of this study was... -
On the group of self-homotopy equivalences of an almost formal space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mahmoud Benkhalifa --- University of Sharjah, UAEA simply connected CW-complex X of finite type is called almost formal if and if the rational Hurewicz homomorphism is injective for every n ≥ 1. In this paper, we show that the group of self-homotopy equivalences of an almost... -
Modelling diameter growth, mortality and recruitment of trees in miombo woodlands of Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Wilson A Mugasha --- Department of Ecology and Natural Resource Management, Norway Tron Eid --- Department of Ecology and Natural Resource Management, Norway Ole M Bollandsås --- Department of Ecology and Natural Resource Management, Norway Lawrence Mbwambo --- Tanzania Forestry Research Institute, TanzaniaMiombo woodlands cover large areas in Tanzania but very little reliable data on forest dynamics for the woodlands exist. The main objective of this study was to develop a model system describing such dynamics based on easily measurable tree variables... -
A review of interprovincial variations in HIV prevalence rates in Zimbabwe
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Elisa Sibanda --- Department of Development Studies, South Africa Prudence Khumalo --- Department of Public Administration, South AfricaDespite the proven remarkable decline of HIV prevalence in the sub-Saharan Africa region, both sub-regional and within-country disparities in HIV prevalence persist. This paper is a survey of literature on HIV prevalence and spread in Zimbabwe, focusing on provincial differences... -
Macroinvertebrate functional organisation along the longitudinal gradient of an austral temperate river
Item type: Journal Article • Journal: African Zoology • Authors: Sydney Moyo --- Department of Zoology and Entomology, South Africa Nicole B Richoux --- Department of Zoology and Entomology, South AfricaThe Kowie River, a relatively pristine system in South Africa, was sampled on four occasions over one year to determine if relative abundances of functional feeding groups (FFGs) of invertebrates changed along the longitudinal gradient, and if these changes matched... -
Empowering caregivers of orphans and vulnerable children in Swaziland
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Syloid Choice Makufa --- Pact, Swaziland Daisy Kisyombe --- Pact, Swaziland Nicole Miller --- Pact, Swaziland Nanette Barkey --- Pact, USAThis paper reports on the health and psychosocial impacts of a programme designed to economically empower female caregivers of orphans and vulnerable children (OVC). The results presented are from a cohort of 492 female caregivers who participated in savings groups... -
Invasive and non-invasive group A β-haemolytic streptococcal infections in patients attending public sector facilities in South Africa: 2003–2015
Item type: Journal Article • Journal: Southern African Journal of Infectious Diseases • Authors: Dylan Barth --- Department of Medicine, South Africa Bongani M Mayosi --- Department of Medicine, South Africa Motasim Badri --- College of Medicine, Kingdom of Saudi Arabia Andrew Whitelaw --- Department of Microbiology, National Health Laboratory Service, South Africa Mark E Engel --- Department of Medicine, South AfricaBackground: The burden of disease caused by group A streptococcus (GAS) in Africa is largely unknown. The aim of this study was to determine the incidence of invasive (iGAS) and non-invasive GAS (non-iGAS) infections in patients attending the public health... -
First insights on spatial and temporal distribution patterns of humpback whales in the breeding ground at Sainte Marie Channel, Madagascar
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Trudelle --- Bioacoustics Team, France J-B Charrassin --- Sorbonne Universités (UPMC, Univ. Paris 06) – CNRS-IRD-MNHN, LOCEAN-IPSL, France A Saloma --- Cétamada, Port Barachois, Madagascar S Pous --- Sorbonne Universités (UPMC, Univ. Paris 06) – CNRS-IRD-MNHN, LOCEAN-IPSL, France A Kretzschmar --- Biostatistiques et Processus Spatiaux (BioSP), France O Adam --- Bioacoustics Team, FranceThe Sainte Marie Channel on the northeast coast of Madagascar is an important breeding ground for humpback whales; the first observation of birth was documented there, yet it has never been investigated for phenology and habitat use of humpback whales... -
Diet of bluegill Lepomis macrochirus in a South African reservoir during winter and summer
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PM Ndaleni --- Department of Ichthyology and Fisheries Science, South Africa RJ Wasserman --- South African Institute for Aquatic Biodiversity, South Africa BR Ellender --- South African Institute for Aquatic Biodiversity, South Africa OLF Weyl --- Department of Ichthyology and Fisheries Science, South AfricaAlien fishes are considered a major threat to aquatic biodiversity in South Africa, yet relatively little regional information on their biology and ecology is available for many of these species. Seasonal changes in the diet of the bluegill Lepomis macrochirus... -
Self-motivated behaviour: Its influence on intergroup contact for intergroup harmony
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Emenike N. Anyaegbunam --- Department of Psychology, Nigeria Charles O. Anazonwu --- Department of Psychology, NigeriaWe investigated the role of self-motivated behaviour in promoting intergroup member contact for intergroup harmony. A multi-ethnic group of 68 freshmen students attending a Nigerian state university were participants (female = 43.8%; Mean age = 22.15 years, SD = 2.35... -
Longevity in some Malagasy rainforest passerines
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Friederike Woog --- Staatliches Museum für Naturkunde Stuttgart, Germany Narisoa Ramanitra --- Ecole Normale Supérieure, Université d’Antananarivo, Madagascar Andrianarivelosoa Solohery Rasamison --- Mention Zoologie et Biodiversité Animale, Faculté des Sciences, L’Université d’Antananarivo, Madagascar Rasolondraibe Lovahasina Tahiry --- Mention Zoologie et Biodiversité Animale, Faculté des Sciences, L’Université d’Antananarivo, MadagascarData on longevity is a prerequisite to understand the life-history strategies of a species. For Malagasy songbirds no information has been previously published. Therefore, we studied their longevity in a capture–recapture effort in a rainforest in eastern Madagascar (Maromizaha, Andasibe)... -
Managing in the Informal Economy: The Informal Financial Sector in Tanzania
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Peter C. Mhando --- 315 Business Building, Risk Management Department, Smeal College of Business, USATo a certain extent, the informal economy flourishes by filling the gap left by formal institutions. This is most vividly illustrated where practical management of informal financial service delivery rests on the need for such as a means to an... -
Reef fish and benthic community structures of the Santa Luzia Marine Reserve in the Cabo Verde islands, eastern central Atlantic Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Freitas --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde TC Mendes --- Departamento de Ecologia, Brazil C Almeida --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde T Melo --- Biosfera I – Associação para Defesa do Meio Ambiente, República de Cabo Verde RC Villaça --- Departamento de Biologia Marinha, Brazil R Noguchi --- Programa de Engenharia Ambiental, Brazil SR Floeter --- Laboratório de Biogeografia e Macroecologia Marinha, Departamento de Ecologia e Zoologia, Brazil CA Rangel --- Centro Nacional de Avaliação da Biodiversidade e de Pesquisa e Conservação do Cerrado (CBC), Brazil CEL Ferreira --- Departamento de Biologia Marinha, BrazilUnderstanding ecological structures and the dynamics of reef fish assemblages is a fundamental step in current conservation biology. Patterns of abundance and biomass of reef fish communities of the tropical Cabo Verde Archipelago (eastern central Atlantic Ocean) have not been... -
Smallholder group dynamics and capacity building: A case study of dairy groups in Kenya
Item type: Journal Article • Journal: East African Agricultural and Forestry Journal • Authors: Stella Nabwile Makokha --- Kenya Agricultural and Livestock Research Organization, Biotechnology Centre Research Institute-Kabete, Kenya David Yongo --- Livestock Production, Ministry of Agriculture, Livestock and Fisheries, State Department of Livestock, Kenya Martin Mwirigi --- Kenya Agricultural and Livestock Research Organization, Biotechnology Centre Research Institute-Kabete, Kenya Dave Nyongesa --- Kenya Agricultural and Livestock Research Organization, Biotechnology Centre Research Institute-Kabete, KenyaSmallholder farmer groups increase market access and reduce transaction costs, but many challenges reduce their performance. A study on how group dynamics and capacity building influence group performance was conducted in Meru, Tharaka Nithi and Uasin Gishu Counties in 2013... -
Report of suspected kidnapping in cooperative breeding Southern Ground-Hornbill in South Africa with consequences for conservation reintroductions
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Lucy V Kemp --- Mabula Ground Hornbill Project, South Africa Paige F Ezzey --- Mabula Ground Hornbill Project, South AfricaKidnapping in avian species is a rarely observed phenomenon and warrants greater investigation. Kidnapping, reported for some cooperative breeding birds and mammals, has now been confirmed for the Southern Ground-Hornbill Bucorvus leadbeateri and has implications for management of reintroductions of... -
Factors to consider for effective critical thinking development in auditing students
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: E. A. J. Terblanche --- Department of Financial Governance, South Africa B. de Clercq --- Department of Taxation, South AfricaFor students to be able to adapt in a fast-changing, technology-driven world, they have to be critical thinkers. With critical thinking being viewed as a prized commodity, there is an increased emphasis on this vital skill in the auditing profession... -
Dietary intake of HIV-seropositive clients attending Longisa County Hospital Comprehensive Care Clinic, Bomet County, Kenya
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Kenneth Kipngeno Tonui --- , Kenya Eunice Njogu --- , Kenya Agatha Christine Onyango --- , KenyaBackground: Dietary intake of HIV-seropositive persons remains a major concern across various settings around the globe. Inadequate dietary intake, infections and stage of disease progression elicit malnutrition among HIV-seropositive individuals, which hastens progression of HIV to full-blown AIDS. -
PMTCT Option B+ 2012 to 2018 — Taking stock: barriers and strategies to improve adherence to Option B+ in urban and rural Uganda
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Rachel King --- , USA Joyce Namale Matovu --- , Uganda Joseph Rujumba --- , Uganda Priscilla Wavamunno --- , Uganda Alexander Amone --- , Uganda Grace Gabagaya --- , Uganda Mary Glenn Fowler --- , Uganda Jaco Homsy --- , Uganda Janet Seeley --- , UK Philippa Musoke --- , UgandaSince 2012, PMTCT Option B+ has been recommended by the World Health Organization to reduce vertical transmission but numerous adherence challenges remain. We conducted a qualitative study at baseline using six focus group discussions and 14 in-depth interviews to explore... -
Large characteristic subgroups and abstract group classes
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Francesco de Giovanni --- , Italy Marco Trombetti --- , ItalyIt is well-known that every virtually abelian group contains an abelian characteristic subgroup of finite index. We shall say that a group class is F-characteristic if any group containing an -subgroup of finite index has also a characteristic subgroup of... -
Common dolphin Delphinus delphis occurrence off the Wild Coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Caputo --- , South Africa PW Froneman --- , South Africa S Plön --- , South AfricaDespite their typical large group sizes, limited research exists on the occurrence of common dolphins Delphinus delphis because of the pelagic, offshore nature of this species and the lack of barriers to their movement in this environment. The main purpose... -
Intra-seasonal activity of ground dwelling spiders following six years of tillage, fertiliser and weeding treatments in an agricultural field in northern Zimbabwe
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Nilton Mashavakure --- , Zimbabwe Delight Vhembo --- , Zimbabwe Arnold B Mashingaidze --- , Zimbabwe Edson Gandiwa --- , ZimbabweSpiders are important biological control agents whose activity and diversity can be negatively affected by agricultural practices. A study was conducted at Chinhoyi University of Technology experimental farm, northern Zimbabwe, to determine the impact of tillage, fertiliser application and weeding... -
Analysing species site-specific tree growth, mortality and in-growth for miombo woodlands in Tanzania
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: E E Njoghomi --- , Tanzania S Valkonen --- , K Karlsson --- ,The silvicultural information base for the development of management regimes for Tanzanian miombo woodlands is underdeveloped. The limited and fragmented information on tree growth and stand dynamics has constrained the progress of sustainable management in these woodlands. Therefore, this study... -
Gendered group conflict effects on prosecutors’ psychological well-being: A brief study
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Petro Erasmus --- , South Africa Refilwe G. Pila-Nemutandani --- , South Africa Abimbola A. Akanni --- , Nigeria Wandile F. Tsabedze --- , South AfricaWe explored gendered group conflict effects on forms of occupational stress and psychological well-being of prosecutors in Botswana. A convenience sample of 92 prosecutors (female = 52%; married = 35.9%; mean years of service = 6.38 years, SD = 3.84... -
Seasonal dynamics in water quality and phytoplankton of four tropical rivers in Ebonyi State, southeastern Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GN Nwonumara --- , Nigeria OI Okogwu --- , NigeriaThis study assessed the impacts of human activities and naturogenic processes on the water quality and phytoplankton of four rivers proximal to rice farms in Ebonyi State, south-eastern Nigeria. A range of water quality parameters were measured in conjunction with... -
Temporal and spatial variation of the molluscan community structure in Oualidia Lagoon, Moroccan Atlantic coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F El Asri --- , Morocco A Errhif --- , Morocco MN Tamsouri --- , Morocco H Nhhala --- , Morocco M Maanan --- , France H Zidane --- , MoroccoThe molluscan assemblages inhabiting the coastal waters of Oualidia Lagoon, Morocco, were studied during winter and summer of 2013. The taxonomic composition and diversity were determined at 43 sample sites. Thirty-four mollusc taxa were recorded in total, including 12 species... -
Women’s self-help groups and asset accumulation in peri-urban Wa, Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Ibrahim Abu Abdulai --- , Ghana Shaibu Bukari --- , Ghana Moses Naiim Fuseini --- , GhanaWomen’s self-help groups (SHGs) play an essential role in the fight against poverty. Despite this, studies on the impact of SHGs on women’s asset accumulation and incomes tend to focus on rural and urban areas, with peri-urban areas receiving little... -
Characteristics and sociocultural impacts of small pelagic fishing by migrant fishers in Benin, West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Ahouansou Montcho --- Université Nationale d’Agriculture, Bénin KV Salako --- University of Abomey-Calavi, Benin FJ Chadare --- Université Nationale d’Agriculture (UNA), Benin SC Gnansounou --- University of Abomey-Calavi, Benin Z Sohou --- Institut de Recherches Halieutiques et Océanologiques du Bénin (IRHOB), Bénin P Failler --- University of Portsmouth, United Kingdom R Glèlè Kakaï --- University of Abomey-Calavi, Benin AE Assogbadjo --- University of Abomey-Calavi, BeninSmall pelagic fish species contribute substantially to the food security and livelihoods of local communities in developing countries. In West Africa, and particularly in Benin, small pelagic fisheries attract many migrant fishers who are key actors in the sector. This... -
Product-harm crisis and perceived betrayal: The moderating effect of cognitive bias
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Li Yalin --- Suqian University, China Zhao Min --- Hubei University of Economics, ChinaThis study utilised an experimental design to examine the moderating effect of cognitive biases (availability of information and herd effect) on the relationship between product-harm crisis and perceived betrayal. In a series of three studies involving 596 young adults (college... -
A remark on prime (non)congruent numbers
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Tim Evink --- Institute of Algebra and Number Theory, Ulm University, Germany Jaap Top --- Bernoulli Institute, University of Groningen, The Netherlands Jakob Dirk Top --- Bernoulli Institute, University of Groningen, The NetherlandsThis paper discusses prime numbers that are (resp. are not) congruent numbers. Particularly the only case not fully covered by earlier results, namely primes of the form p = 8k +1, receives attention. -
Solvability and nilpotency of expanded groups relative to the nearring of zero and congruence preserving functions
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Gary L. Peterson --- James Madison University, USA Stuart D. Scott --- University of Auckland, New ZealandIn this paper we study solvability and nilpotency of an expanded group relative to the nearring of zero and congruence preserving functions of the expanded group. A particular case of interest is when the expanded group is a nearring module... -
Approximate local isometries of derivative Hardy spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Jiménez-Vargas --- Universidad de Almería, Spain Takeshi Miura --- Niigata University, JapanFor any 1 ≤ p ≤ ∞, let Sp () be the space of holomorphic functions f on such that f′ belongs to the Hardy space Hp (), with the norm ∥f∥∑ = ||f||∞ +||f′|| p . We prove that... -
Development of structured support groups for HIV-positive women in South Africa
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Maretha Visser --- Department of Psychology, University of Pretoria, Jonathan Mundell --- University of Pretoria, Annelize de Villiers --- MRC Unit for Maternal and Infant Care Strategies, University of Pretoria, Kathleen Sikkema --- Epidemiology and Public Health, Psychiatry and Psychology, Yale University School of Medicine, Bridget Jeffery --- Department Obstetrics and Gynaecology, University of Pretoria and Kalafong Hospital,Women living with HIV in a stigmatising community need support to cope with their HIV status. In a process of action research, a structured support group programme was designed to meet the needs of women to cope with their diagnosis... -
HIV/AIDS through the lens of Christianity: Perspectives from a South African urban support group
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Khumbulani Hlongwana --- South African Medical Research Council (MRC), Malaria Research Programme, Sibongile Sylvia Mkhize --- Research Programme of Health Systems Trust (HST),HIV is one of the most obscure viruses that humankind has had to face in recent times. Compounding this obscurity are often contesting perspectives on what it means to be HIV infected, and these perspectives are largely constituted by people's... -
Establishing support groups for HIV-infected women: Using experiences to develop guiding principles for project implementation
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Maretha Visser --- Department of Psychology, University of Pretoria, Jonathan Mundell --- Kalafong Hospital,HIV-infected women need support to deal with their diagnosis as well as with the stigma attached to HIV. As part of their practical training, Master's-level psychology students negotiated with the staff of four clinics in townships in Tshwane, South Africa,... -
The duty to disclose in Kenyan health facilities: a qualitative investigation of HIV disclosure in everyday practice
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Eileen Moyer [d338e14] Emmy Kageha Igonya Rosalijn Both Peter Cherutich Anita HardonDisclosure of HIV status is routinely promoted as a public health measure to prevent transmission and enhance treatment adherence support. While studies show a range of positive and negative outcomes associated with disclosure, it has also been documented that disclosing... -
A lottery incentive system to facilitate dialogue and social support for workplace HIV counselling and testing: A qualitative inquiry
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Martin Weihs --- , South Africa Anna Meyer-Weitz --- , , South AfricaDespite South African mid-sized companies' efforts to offer HIV counselling and testing (HCT) in the workplace, companies report relatively poor uptake rates. An urgent need for a range of different interventions aimed at increasing participation in workplace HCT has been... -
Sexual abstinence: What is the understanding and views of secondary school learners in a semi-rural area of North West Province, South Africa?
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Kebogile Mokwena --- , , South Africa Mamaponesa Morabe --- , , South AfricaAmong strategies to prevent HIV, other sexually transmitted infections (STIs) and unwanted pregnancies, are programs that promote sexual abstinence among adolescents. However, literature suggests that there may be differences in the understanding of abstinence across adolescents, and this study sought... -
When the clinic becomes a home. Successful VCT and ART services in a stressful environment
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Jonathan Mensah Dapaah --- , , Ghana Rachel Spronk --- , , The NetherlandsWith the upscaling of antiretroviral therapy (ART) in resource-poor countries, many HIV-positive persons in Ghana have been accessing treatment in hospitals. Prevalence is relatively low compared to other African countries, 1.30%. HIV/AIDS remains heavily stigmatised in Ghana, which influences the... -
Intergroup‐movement in a group‐living lizard, Cordylus cataphractus, from South Africa
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Louise Visagie --- University of Stellenbosch, South Africa P. le FrasN. Mouton --- University of Stellenbosch, South Africa AlexanderF. Flemming --- University of Stellenbosch, South Africa -
Pachydactylus katanganus de Witte 1953, a species endemic to the Upemba National Park (Sauria: Gekkonidae)
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: DonaldG. Broadley --- Research Associate, Natural History Museum of Zimbabwe,On morphological and zoogeographical grounds, the isolated populations of Pachydactylus katanganus in the Upemba National Park, Katanga, D.R.C., are considered to represent an evolutionary species. -
A new cryptic frog of the genus Boophis from the northwestern rainforests of Madagascar
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Miguel Vences --- University of Amsterdam, The Netherlands Frank Glaw --- Zoologische Staatssammlung, GermanyWe describe a new species of arboreal frog of the Boophis mandraka group (Anura: Mantellidae) from Manongarivo Special Reserve in north‐western Madagascar. This new species is morphologically similar to the other species of this group: B. liami, B. mandraka, and... -
The effect of intergroup distance on group fidelity in the group‐living Lizard, Cordylus cataphractus
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Eloise Costandius --- Stellenbosch University, South Africa P.Le FrasN. Mouton --- Stellenbosch University, South Africa AlexanderF. Flemming --- Stellenbosch University, South AfricaThe effect of intergroup distance on group fidelity in the Armadillo Lizard, Cordylus cataphractus, was studied in the Lambert's Bay/Graafwater area, South Africa. One hundred and six individuals from 27 groups were marked and recaptured regularly from May until September... -
Aggregation in Bibron's gecko, chondrodactylus bibronii
Item type: Journal Article • Journal: The Journal of the Herpetological Association of Africa • Authors: Anita Meyer --- University of Stellenbosch, South Africa P. le FrasN. Mouton --- University of Stellenbosch, South AfricaAggregation behaviour in a rock‐dwelling gecko Chondrodactylus bibronii was investigated. In a laboratory setup, individuals were provided with an excess of shelters to determine whether limited availability of optimal shelters may be the cause of this species’ aggregation behaviour in... -
Medicinal and dietary uses of amphibians in Burkina Faso
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Meike Mohneke --- Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Herpetology, Germany AbiodunB. Onadeko --- University of Lagos, Nigeria Mark-Oliver Rödel --- Leibniz Institute for Research on Evolution and Biodiversity at the Humboldt University Berlin, Herpetology, GermanyHerein we present ethnozoological data on the use of frogs by two ethnic groups (Mossi and Gourmanché) in Burkina Faso. These data are based on 129 interviews. Differences concerning consumption, applications as medical treatments, and cultural purposes were recorded and... -
Phylogeny and phylogeography of the Malagasy leaf-tailed geckos in the Uroplatus ebenaui group
Item type: Journal Article • Journal: African Journal of Herpetology • Authors: Fanomezana Mihaja Ratsoavina --- Zoological Institute, Technical University of Braunschweig, Germany Miguel Vences --- Zoological Institute, Technical University of Braunschweig, Germany EdwardE. Louis --- Omaha's Henry Doorly Zoo and Aquarium, USALeaf-tailed geckos, genus Uroplatus, are one of the most prominent endemic reptile groups from Madagascar, but the species diversity and diversification of this taxonomic group are not completely understood. Here, we present a phylogenetic reconstruction of the small-sized Uroplatus which... -
On G-character tables for normal subgroups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.J. Felipe --- Instituto Universitario de Matemática Pura y Aplicada (IUMPA-UPV), Universitat Politècnica de València, Spain M.D. Pérez-Ramos --- Universitat de València, Spain V. Sotomayor --- Instituto Universitario de Matemática Pura y Aplicada (IUMPA-UPV), Universitat Politècnica de València, SpainLet N be a normal subgroup of a finite group G. From a result due to Brauer, it can be derived that the character table of G contains square submatrices which are induced by the G-conjugacy classes of elements in... -
Eliahou number, Wilf function and concentration of a numerical semigroup
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Patricio Almirón --- Universidad Complutense de Madrid, Spain Julio José Moyano-Fernández --- Departamento de Matemáticas & Institut Universitari de Matemátiques i Aplicacions de Castelló, SpainWe give an estimate of the minimal positive value of the Wilf function of a numerical semigroup in terms of its concentration. We describe necessary conditions for a numerical semigroup to have a negative Eliahou number in terms of its... -
Optimal ball and horoball packings generated by 3-dimensional simply truncated Coxeter orthoschemes with parallel faces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jenő Szirmai --- Budapest University of Technology and Economics, Institute of Mathematics, Hungary Arnasli Yahya --- Budapest University of Technology and Economics, Institute of Mathematics, HungaryIn this paper, we consider the ball and horoball packings belonging to 3-dimensional Coxeter tilings that are derived by simply truncated orthoschemes with parallel faces. The goal of this paper is to determine the optimal ball and horoball packing arrangements... -
Non-blow-up and blow-up results to heat equations with logarithmic nonlinearity on stratified groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ardak Kashkynbayev --- Nazarbayev University, Kazakhstan Aidyn Kassymov --- Ghent University, Belgium Durvudkhan Suragan --- Nazarbayev University, KazakhstanIn this paper, we obtain a finite-time non-blow-up result for the sub-Laplacian heat equations with logarithmic nonlinearity on stratified groups. In our proof, the logarithmic Sobolev-Folland-Stein inequality plays a key role. We also establish a blow-up result at infinite time... -
Some further remarks on characterized subgroups generated by modular simple density
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ayan Ghosh --- Jadavpur University, IndiaIn this short note we have constructed an uncountable tower of characterized subgroups using the notion of modular simple density [8] which subsequently gives the solution of Problem 2.15 [7] in a more general setting. -
On Yang-Baxter groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A. Ballester-Bolinches --- Guangdong University of Education, People’s Republic of China R. Esteban-Romero --- Universitat de València, Spain P. Jiménez-Seral --- Universidad de Zaragoza, Spain V. Pérez-Calabuig --- Universitat de València, SpainA group is said to be an involutive Yang-Baxter group, or simply an IYB-group, if it is isomorphic to the permutation group of an involutive, non-degenerate set-theoretic solution of the Yang-Baxter equation. In this paper, Yang-Baxter groups (YB-groups for short)... -
Generating solutions of a linear equation and structure of elements of the Zelisko group II
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: V.A. Bovdi --- United Arab Emirates University, UAE V.P. Shchedryk --- Pidstryhach Institute for Applied Problems of Mechanics and Mathematics, UkraineWe continue our previous investigation of the Zelisko group of a matrix over Bézout domains. The explicit form of elements of this group over homomorphic image of Bézout domain of stable rank 1.5 is described. -
On central automorphisms of finite p-groups of class 2
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Shabani-Attar --- Payame Noor University, IranLet G be a finite p-group and let Aut c (G) be the group of all central automorphisms of G. Let be the set of all central automorphisms of G fixing Z(G) elementwise. For a finite p-group of class 2,... -
The complexity of a numerical semigroup
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J.I. García-García --- Universidad de Cádiz, Spain M.A. Moreno-Frías --- Universidad de Cádiz, Spain J.C. Rosales --- Universidad de Granada, Spain A. Vigneron-Tenorio --- Universidad de Cádiz, SpainLet S and Δ be numerical semigroups. A numerical semigroup S is an I(Δ)-semigroup if S \ {0} is an ideal of Δ. We denote by S is an I(Δ)-semigroup}, and we say that Δ is an ideal extension... -
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On finite Sylow tower and σ-tower groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jinzhuan Cai --- Hainan University, P.R. China Inna N. Safonova --- Belarusian State University, Belarus Alexander N. Skiba --- Francisk Skorina Gomel State University, Belarus Zhigang Wang --- Hainan University,In this paper, G is a finite group and σ a partition of the set of all primes ℙ, that is, σ = {σ i | i ∈ I}, where ℙ = ⋃ i∈I σ i and σ i ∩... -
Equivalent version of Huppert’s conjecture for codegrees of K 3-groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mohsen Ghasemi --- Urmia University, Iran Somayeh Hekmatara --- Urmia University, IranFor a character χ of a finite group G the number cod(χ) = |G: Ker(χ)|/χ(1) is called the codegree of χ. In this note, we verify the equivalent version of Huppert’s conjecture for K 3 -groups. -
Intergroup emotions and intergroup attitudes in post-apartheid South Africa
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Elirea Bornman --- University of South Africa, South Africa Johan C. Mynhardt --- University of South Africa, South Africa Dion van Zyl --- University of South Africa, South AfricaThis article investigates the relationships among intergroup emotions and intergroup attitudes among three South African ethno-linguistic groups. The sample included 1 658 respondents (350 Afrikaans-speaking white South Africans; 526 English-speaking white South Africans; and 782 black South African respondents). They... -
Energy and nutrient contribution of different food groups to the dietary intake of 6- to <9-month-old infants in a low socioeconomic community in North West Province, South Africa
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Tshiphiri Mukwevho --- North-West University, South Africa Cornelius M Smuts --- North-West University, South Africa Hannah Asare --- North-West University, South Africa Mieke Faber --- North-West University, South Africa -
On the monoid algebra associated to the monomial characters of a finite group
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mircea Cimpoeaş --- University Politehnica of Bucharest, Romania Alexandru Florin Radu --- University Politehnica of Bucharest, RomaniaGiven a finite group G, we study the monoid algebra RG , over a field K , generated by the monomial characters of G. In particular, we note that the integral closure of RG is contained in the algebra generated... -
A generalization of the group inverse
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: D.E. Ferreyra --- Universidad Nacional de Río Cuarto, Argentina Saroj B. Malik --- Ambedkar University, IndiaFrom the point of view of generalizations, the core inverse of a matrix has received a lot of attention of researchers in this area resulting in many generalizations of the core inverse, like core-EP, DMP, BT, WC and so on... -
Haagerup property of semigroup crossed products
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Qing Meng --- Qufu Normal University, ChinaIn this paper, we study the Haagerup property of semigroup crossed products for lattice ordered groups. Let G be a lattice ordered group. We show that the reduced semigroup C*-algebra C*r (G +) has the Haagerup property if and only... -
Equidivisibility and profinite coproduct
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jorge Almeida --- Universidade do Porto, Portugal Alfredo Costa --- University of Coimbra, PortugalThe aim of this work is to investigate the behavior of equidivisibility under coproduct in the category of pro-V semigroups, where V is a pseudovariety of finite semigroups. Exploring the relationship with the two-sided Karnofsky-Rhodes expansion, the notions of KR-cover... -
Some concepts of topology and questions in topological algebra
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: A.V. Arhangel’skii --- Moscow Pedagogical State University, RussiaThis paper has features of mixed nature. It contains new results, in particular, on semitopological groups. We also pose some problems, introduce new definitions and describe in details certain techniques we need below, providing the proofs of not so well-known... -
The influence of TI-property and subnormality of self-centralizing subgroups of non-prime-power order on the structure of finite groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jiangtao Shi --- Yantai University, P.R. China Na Li --- Beijing Jiaotong University, P.R. ChinaWe obtain a complete classification of the structure of finite groups in which every self-centralizing subgroup of non-prime-power order is a TI-subgroup or a subnormal subgroup. -
On numerical invariants of a finite group factorized by tcc-subgroups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Alexander Trofimuk --- Brest State A.S. Pushkin University, BelarusA subgroup A of a group G is called tcc-subgroup in G, if there is a subgroup T of G such that G = AT and for any X ≤ A and for any Y ≤ T there exists an... -
On ωs-balanced semitopological groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Vikesh Kumar --- University of Delhi, India Brij Kishore Tyagi --- Atma Ram Sanatan Dharma College, University of Delhi, IndiaIn this paper we introduce the notion of ωs-balanced semitopological groups. We show that a regular (Hausdorff, T 1) semitopological group G admits a homeomorphic embedding as a subgroup into a product of regular (Hausdorff, T 1) semitopological groups with... -
“I don’t know if you have searched through the scriptures to find a reference on HIV/AIDS. I mean there isn’t going to be one, right?”: HIV stigma solutions from dialogues between faith leaders and health care workers
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Germari Kruger --- Vrije Universiteit, The Netherlands Eduardus AJG van der Borght --- Vrije Universiteit, The Netherlands Martha T Teijema --- Amsterdam University Medical Center, Vrije Universiteit, The Netherlands Marceline Tutu van Furth --- Amsterdam University Medical Center, Vrije Universiteit, The NetherlandsIn South African communities, both faith leaders and health care workers play a vital role in supporting the health of community members and people living with HIV in particular. This study describes HIV stigma when faith leaders and health care... -
Order boundedness and order continuity properties of positive operator semigroups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jochen Glück --- University of Wuppertal, School of Mathematics and Natural Sciences, Germany Michael Kaplin --- Institute of Mathematics, SlovenijaRelatively uniformly continuous (ruc) semigroups were recently introduced and studied by Kandic, Kramar-Fijavž, and the second-named author, in order to make the theory of one-parameter operator semigroups available in the setting of vector lattices, where no norm is present in... -
Hereditarily projectable Archimedean lattice-ordered groups with unit
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Anthony W. Hager --- Wesleyan University, USA Brian Wynne --- , USALet W be the category of Archimedean lattice-ordered groups with distinguished weak unit and unit-preserving ℓ-group homomorphisms. We denote by P, wP, Loc, HA, respectively, the collections of projectable, weakly projectable, local, and hyperarchimedean W-objects. For any C ⊆ W,... -
Fixed points of principal E 6-bundles over a compact algebraic curve
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Álvaro Antón-Sancho --- Fray Luis de Leon University College of Education, Catholic University of Ávila, SpainLet X be a compact algebraic curve of genus g ≥ 2. The nontrivial outer automorphism σ of the complex Lie group E 6 acts on the moduli space M(E 6) of principal E 6-bundles over X , and this... -
On an extension of Hall’s criterion
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jiangtao Shi --- Yantai University, ChinaLet A and G be finite groups such that A acts coprimely on G by automorphisms, assume that G has a maximal A-invariant subgroup M that is a direct product of some isomorphic simple groups, we prove that if G... -
Stability analysis of fully dynamic piezoelectric beams with internal fractional delay
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jianghao Hao --- Shanxi University, P.R. China Jing Yang --- Shanxi University, P.R. ChinaIn this paper, we are interested in the stability analysis of one-dimensional fully dynamic piezoelectric beam systems with internal fractional delay under different feedback controls (boundary and internal). By introducing two new equations to deal with fractional delay, equivalent new... -
On the product of vanishing classes in a finite group
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Neda Ahanjideh --- Shahrekord University, IranLet G be a finite group. An element g ∈ G is called a vanishing element of G if there exists an irreducible complex character χ of G such that χ(g) = 0. The conjugacy class of G containing a... -
Subgroups of products of semitopological groups with a strong development
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Iván Sánchez --- Universidad Autónoma Metropolitana,Using the notion of ωs-balanced semitopological group and some cardinal invariants, Kumar and Tyagi [7] characterize when a regular (T 1, Hausdorff) semitopological group admits a homeomorphic embedding as a subgroup into a product of regular (T 1, Hausdorff) semitopological... -
On the difference graph of power graphs of finite groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jitender Kumar --- Birla Institute of Technology and Science Pilani, India Ramesh Prasad Panda --- VIT-AP University, India Parveen --- Birla Institute of Technology and Science Pilani, IndiaThe power graph of a finite group G is the simple undirected graph with vertex set G whose two vertices are adjacent if one is a power of the other. The enhanced power graph of a finite group G is... -
Discrete selectivity, shrinking properties, and disjoint local π-bases
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Gary Gruenhage --- Auburn University, U.S.A Vladimir V. Tkachuk --- Universidad Autónoma Metropolitana, MexicoUsing binary function spaces, we give an example of a pseudocompact discretely selective topological group. We show that, under PFA, every compact space of countable tightness has a countable disjoint local π-base at every point. If X is a compact... -
Perceived insider status and innovative behaviour of the new generation of employees: Mediating effect of innovative self-efficacy and moderation of group competitive climate
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shujie Yuan --- Huangshan University, People's Republic of China Runbin Jiang --- Capital Normal University, People's Republic of ChinaBased on social identity theory, this study investigated the perceived insider status and innovative behaviour relationships in new generation employees by their innovative self-efficacy and group competitive climate in the work context. New generation employees (n = 338) drawn from... -
How perspective taking influences obesity stereotypes: The mediating effect of intergroup contact
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yunlong Wu --- Inner Mongolia Normal University, China Yuzhu Zhang --- Hulunbuir University, ChinaObesity is stigmatised and associated with adverse health, psychological, and social consequences. This study examined contact influences on the relationship between perspective taking and obesity stereotypes in young adults. The sample comprised 411 Chinese university students (female = 73.97%; mean... -
Conformally related invariant (α, β)-metrics on homogeneous spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Azar Fatahi --- University of Isfahan, Iran Masoumeh Hosseini --- University of Isfahan, Iran Hamid Reza Salimi Moghaddam --- University of Isfahan, IranIn this paper, we give the flag curvature formula of general (α, β)-metrics of Berwald type. We study conformally related (α, β)-metrics, especially general (α, β)-metrics that are conformally related to invariant (α, β)-metrics. Also, a necessary and sufficient condition... -
On bi-continuous cosine families
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Christian Budde --- University of the Free State, South AfricaIn this article, we introduce and investigate bi-continuous cosine families. Those are inspired by the theory of bi-continuous semigroups which had an impact in the area of evolution equations in the last decades. The idea here is again that we... -
The self-reported well-being of children in Namibia: Testing hedonic and eudaimonic instruments
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Shelene Gentz --- University of Namibia, Namibia Mònica Ruíz Casares --- Toronto Metropolitan University, Canada Ferran Casas --- Universidad Andrés Bello, ChileAlthough research on hedonic and eudaimonic children’s well-being is growing, these constructs need to be understood within the African context. In this study we validated two psychometric scales with 10 and 12-year-old children (n = 2 035) in the Namibian... -
The isomorphism problem for rational group algebras of finite metacyclic nilpotent groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Àngel García-Blázquez --- Universidad de Murcia, Spain Ángel del Río --- Universidad de Murcia, SpainWe prove that if G and H are finite metacyclic groups with isomorphic rational group algebras and one of them is nilpotent, then G and H are isomorphic. -
On conjugacy of additive actions in the affine Cremona group
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ivan Arzhantsev --- HSE University, RussiaAn additive action on an irreducible algebraic variety X is an effective action with an open orbit of the vector group . Any two additive actions on X are conjugate by a birational automorphism of X. We prove that, if... -
A lemma on C 0-semigroups on time scales and approximate controllability of the heat dynamic equation
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Martin Bohner --- Missouri University of Science and Technology, USA Cosme Duque --- Universidad de Los Andes, Hugo Leiva --- University YachayTech, School of Mathematical and Computational Sciences, Ecuador Zoraida Sivoli --- Universidad Siglo 21,In this paper, we present a lemma that allows us to characterize a broad class of C 0-semigroups on time scales, which can be applied to prove existence and uniqueness of solutions of systems of partial differential equations where the... -
Subgroups of products of Nagata semitopological groups and related results
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Liang-Xue Peng --- Beijing University of Technology, ChinaIn this article, we introduce notions which are called property (c*) and property (M 3*) for semitopological groups. We show that if G is a regular semitopological group with a q-point, property (c*) and Sm(G) ≤ ω, then G is... -
A generalization of the MP-
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Local knowledge, utilisation and consumption of seaweed in coastal communities of southwestern Madagascar
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Rodine --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar A Rakotoarimanana --- University of Toamasina, Madagascar AB Ramamonjisoa --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar LN Ranivoarivelo --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar C Rakotomahazo --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar GBG Todinanahary --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar G Tsiresy --- University of Toamasina, ISTRCE [East Coast Regional Higher Institute of Technology], Madagascar H Jaonalison --- University of Liège, Belgium AL Nomenisoa --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar I Eeckhaut --- University of Mons, Belgium ME Remanevy --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar JS Obe --- , Madagascar R Rasolofonirina --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, Madagascar T Lavitra --- Institut Halieutique et des Sciences Marines (IH.SM), University of Toliara, MadagascarThis study explored the local knowledge, utilisation and consumption of seaweeds (lomotsy in Malagasy) among coastal communities in southwestern Madagascar. Primary data were collected in eight villages, through a survey questionnaire (with a total of 629 respondents) and daily focus... -
Digital financial management skill training for women’s informal saving groups in Dodoma, Tanzania: Mapping user requirements
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Madina Hamisi Juma --- The University of Eastern Finland, Finland Nasibu Rajabu Mramba --- College of Business Education, Tanzania Jarkko Suhonen --- The University of Eastern Finland, Finland Alsen Florian Kapinga --- College of Business Education, Tanzania Matti Tedre --- The University of Eastern Finland, FinlandFinancial management skills are important for the performance of informal saving groups (ISGs) for making informed financial decision-making. Digital training solutions present a convenient, ubiquitous, and relatively affordable skills development mechanism. Despite the importance of digital financial management skills to... -
Lebesgue-Fourier algebras on coset spaces and approximate amenability
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Maryam Esfandani --- Isfahan University of Technology, Iran Rasoul Nasr Isfahani --- Isfahan University of Technology, IranLet K be a compact subgroup of a locally compact group G. In this work, we initiate an investigation of the Lebesgue-Fourier algebra S 1 A(G/K) on the coset space G/K with pointwise multiplication; after some general results on the... -
Untangling the Magelonidae (Annelida: Polychaeta) of southern Africa, including the description of a new species
Item type: Journal Article • Journal: African Zoology • Authors: Kate Mortimer --- Amgueddfa Cymru-Museum Wales, United Kingdom Dylan T Clarke --- Iziko Museums of South Africa, South Africa‘A monograph on the Polychaeta of Southern Africa’ by J. H. Day, published in 1967 and covering over 700 species, was considered an essential reference text for marine biologists. Nonetheless, despite the major contribution it has made, we now know... -
Some characterizations of ω-balanced topological groups with a q-point
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Deng-Bin Chen --- Wuyi University, P.R. China Hai-Hua Lin --- Wuyi University, P.R. China Li-Hong Xie --- Wuyi University, P.R. ChinaIn this paper, we study some characterizations of q-spaces, strict q-spaces and strong q-spaces under ω-balanced topological groups. First we characterize a topological group G to be ω-balanced and a q-space whenever for each open neighborhood O of the identity... -
On elliptic curves assigned to a pair of right triangles with an equal hypotenuse
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Arman Shamsi Zargar --- University of Mohaghegh Ardabili, Iran Seiji Tomita --- Tokyo Software Company (Inc.), JapanConsider a pair of right triangles with an equal hypotenuse. This turns out to solve the diophantine system of equations a 2 + b 2 = c 2 + d 2 = e 2 in integers. To this system we... -
The extended Frobenius problem for Lucas series incremented by a Lucas number
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Aureliano M. Robles-Pérez --- Universidad de Granada, Spain José Carlos Rosales --- Universidad de Granada, SpainWe study the extended Frobenius problem for sequences of the form {la } ∪ {la + ln } n∈N and {la + ln } n ∈N , where {ln } n∈N is the Lucas series and la is a... -
Geometric mean Sylow numbers of nonsolvable groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Chimere Stanley Anabanti --- University of Pretoria, South Africa Alireza Khalili Asboei --- Farhangian University, IranLet G be a finite group. We write gsn(G) for the geometric mean Sylow number of G. The Fitting subgroup of G is denoted by F(G). It was recently proved that if gsn(G) < , then G is solvable. In... -
Combinatorial approaches to the unit groups of Clifford algebras, I
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bokhee Im --- Chonnam National University, Republic of Korea Jonathan D.H. Smith --- Iowa State University, U.S.A.This is the first part of a two-part paper introducing the application of Latin square and quasigroup techniques within a combinatorial approach to the unit groups of Clifford algebras. The two fundamental tools employed are a theorem showing that each... -
Combinatorial approaches to the unit groups of Clifford algebras, II
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bokhee Im --- Chonnam National University, Republic of Korea Jonathan D.H. Smith --- Iowa State University, U.S.A.This is the second part of a two-part paper intended to introduce the use of Latin square and quasigroup techniques in a combinatorial approach to the unit groups of Clifford algebras. The aim of this part is to apply the... -
Dialoguing hunger and survival during the Zimbabwe COVID-19 lockdowns through WhatsApp jokes
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Hugh Mangeya --- Midlands State University, Zimbabwe Ashton Mudzingiri --- Midlands State University, ZimbabweThis article analyses the dialogue on hunger and survival issues emanating from viral COVID-19-induced jokes circulated via WhatsApp during Zimbabwe’s consecutive lockdowns. The lockdowns were part of public health measures to curb the spread of COVID-19. They, however, disrupted the... -
Approximate controllability of a parabolic dynamic equation on homogeneous time scales
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Martin Bohner --- Missouri University of Science and Technology, USA Cosme Duque --- Universidad de Los Andes, Hugo Leiva --- University YachayTech, School of Mathematical and Computational Siences, San Miguel de Urcuqui, EcuadorThis paper aims to explore the approximate controllability of a semilinear system of parabolic dynamic equations on homogeneous time scales. Building on the innovative semigroup theory for time scales introduced in [13], we leverage a pivotal lemma from [5] that... -
On automorphism groups of the conjugacy class type Cayley graphs on the symmetric and alternating groups
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: O. Habineza --- University of the Western Cape, South Africa E. Mwambene --- University of the Western Cape, South AfricaThe automorphism groups of Cayley graphs on symmetric groups, Cay(G, S), where S is a complete set of transpositions have been determined. In a similar spirit, automorphism groups of Cayley graphs Cay(An , S) on alternating groups An , where... -
Locally hulled topologies
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Eugene Bilokopytov --- University of Alberta, University Commons 5-140, CanadaWe present a general result about generating group topologies by pseudo-norms. Namely, we show that if a topology has a base of sets which are closed in a certain sense, then it can be generated by a collection of pseudo-norms... -
Using interactive SMS support groups to prevent mother-to-child HIV transmission in South Africa: a qualitative analysis of social and psychological benefits
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Cindy A. Crusto --- , USA Samantha Pittenger --- Yale University School of Medicine, USA Jessica Costeines --- Yale University School of Medicine, USA Ndidiamaka Amutah-Onukagha --- Tufts University School of Medicine, USA Anna Kydd --- SHM Foundation, UK Maretha Visser --- University of Pretoria, South Africa Thu Do --- Gilead Sciences, USA Andrea Dean --- Baylor College of Medicine/Texas Children’s Hospital, USA Brian Forsyth --- Yale University School of Medicine, USAAlthough advances have been made in the prevention of mother-to-child transmission (PMTCT) of HIV, social and psychological factors associated with learning of an HIV diagnosis and living with HIV during pregnancy can impact medication adherence and health outcomes. Mobile technology... -
Numerical semigroups of coated odd elements
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M.B. Branco --- Universidade de Évora, J.C. Rosales --- Universidad de Granada, Spain M.A. Traesel --- Instituto Federal de São Paulo, BrazilA numerical semigroup S is coated with odd elements (Coe-semigroup), if {x − 1, x + 1} ⊆ S for all odd elements x in S. In this note, we will study this kind of numerical semigroup. In particular, we... -
A characterization of some finite quasisimple groups using their character codegrees
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lehlogonolo S. Mabena --- University of Pretoria, South Africa Sesuai Y. Madanha --- University of Pretoria, South Africa Bernardo G. Rodrigues --- University of Pretoria, South AfricaLet G be a finite group. For an irreducible character χ of G, define its codegree by cod(χ) = |G : ker χ|/χ(1). Furthermore, define cod(G) = {cod(χ) : χ ∈ Irr(G)}. A recent conjecture of Hung and Moretó states... -
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... -
On Finite Groups with Element Order Set of Width 2
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Yang Shu --- Shenzhen College of International Education, China Yong Yang --- Department of Mathematics, USAIn this paper, we study the structure of finite groups with element order set of width 2. -
Dunford-Pettis elements of Banach modules and their applications over commutative Banach algebras
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Fereshteh Hamidi Dastjerdi --- Yazd University, Iran S.M. Sadegh Modarres --- Yazd University, Iran Mehdi Nemati --- Isfahan University of Technology, Iran Sima Soltani Renani --- Isfahan University of Technology, IranRecent research on Dunford-Pettis operators associated with the group algebra L 1 (G) and the Fourier algebra A(G) of a locally compact group has motivated the study of the structure of the Dunford-Pettis space for a Banach module ϵ over...
