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Conservation Developments in South African Forestry
Item type: Journal Article • Journal: South African Forestry Journal • Authors: R. McC. Pott --- ,The historical development of environmental conservational activities within the South African Forestry Industry is followed, and the changing emphasis from the conservation of the remaining indigenous forests (pre-1900) to water conservation, to natural assets and unplanted areas is highlighted. The... -
Children's Resilience as Assets for Safe Schools
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Liesel Ebersöhn --- University of Pretoria,In this article I argue that employing positive psychology conceptions in research allows for a continuum of findings for educational psychology. I illustrate my contention by means of a participatory action research (PAR) survey-based case study in which methodological decisions... -
The Role of Schools in Building the Resilience of Youth Faced with Adversity
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Bridget Johnson --- University of Western Cape, South Africa Sandy Lazarus --- University of Western Cape, South AfricaThis study explored factors related to risk, resilience and health amongst South African teenagers. Grade nine students (N = 472; males = 210, females = 262, age range = 12 to 18 years) at seven schools in the Western Cape... -
How Children Experience the Assets that Support their Learning
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Irma Eloff --- University of Pretoria, Ilze Ferreira --- University of Pretoria, Jacobus G. Maree --- University of Pretoria,The study, on which this article is based, explored the ways in which primary school children in an urban (city centre) setting experience the assets and resources that support their learning. The researchers used a qualitative phenomenological research design incorporating... -
Two 1935 questions of Mazur about polynomials in Banach spaces: counter-examples
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Vladimir PestovWe give various constructions of which the most significant is a continuous scalar-valued 2-polynomial W on the separable Hilbert space l 2 and an unbounded set R ⊂ l 2 such that (i) W is bounded on an ε-neighbourhood of... -
On the Cardinality of Smallest Spanning Sets of Rings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Nadia Boudi Lorenz HalbeisenLet R = (R, +, ˙) be a ring. Then Z ⊆ R is called spanning if the R-module generated by Z is equal to the ring R. A spanning set Z ⊆ R is called smallest if there is... -
A Characterization of l + 1(Γ)
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: IoannisA. PolyrakisIn this article we give necessary and sufficient conditions in order a closed cone of a Banach space E to be isomorphic to the positive cone l 1 +(Γ) of an l 1(Γ) space. This problem has applications in the... -
Separation of Convex Sets and Best Approximation in Spaces with Asymmetric Norm
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: S. CobzaşThe aim of the present paper is to show that some results in Banach spaces have their analogs in spaces with asymmetric seminorms. A space with asymmetric seminorm is a pair (X, p),where X is a real vector space and... -
Discrepancy estimates for point sets on the s-dimensional Sierpińnski carpet
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: L.L. Cristea F. Pillichshammer G. Pirsic K. ScheicherIn a recent paper Cristea and Tichy introduced several types of discrepancies of point sets on the s-dimensional Sierpí nski carpet and proved various relations between these discrepancies. In the present paper we prove a general lower bound for those... -
Graph-Coloring and Choice a Note on a Note by Shelah and Soifer
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Horst Herrlich Y.T. RhineghostSharpening results of Shelah and Soifer we will show that in ZF set theory the Shelah-Soifer Graph G has the following properties: 1. If AC(2), the axiom of choice for families of 2-element sets, or AC(R), the axiom... -
On classes of maps with the extension property to the bicompletion in quasi-pseudo metric spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: SeithutiP. MoshokoaExtensions of CS-regular maps from a dense subset of a metric space to the whole space are discussed in the literature. It is the purpose of this paper to present results on extensions of these maps to the bicompletion in... -
On quasi semi-θ-closed sets in topology
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. Caldas D.N. Georgiou S. JafariLevine [14] introduced and investigated the notion of generalized closed set. It is the object of this paper is continue the study of the notion of generalized closed set called quasi semi-θ-closed set [3]. This class was obtained by generalizing... -
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... -
Bi-Alexandroff spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Phethiwe MatutuBi-Alexandroff spaces are defined as extensions of Alexandroff spaces. Urysohn's lemma for bi-Alexandroff spaces is used to show that upper and lower cozero sets of bitopological spaces are bi-Alexandroff spaces. An adjunction between bi-Alexandroff spaces and pairwise completely regular bitopological... -
BASES FOR CONES AND REFLEXIVITY
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ioannis Polyrakis --- Department of Mathematics, National Technical University of Athens, Zographou, Athens, Greece,It is proved that a Banach space E is non-reflexive if and only if E has a closed cone with an unbounded, closed, dentable base. If E is a Banach lattice, the same characterization holds with the extra assumption that... -
CONJUGACY CLASSES OF INVOLUTIONS IN THE GROUP OF HOMEOMORPHISMS OF THE RATIONAL NUMBERS
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: P. V. Bruyns --- Department of Mathematics and Applied Mathematics, University of Cape Town, South Africa,Let X be the set of rational numbers Q with the topology induced by the usual topology on R and let AutX be the set of functions f: X → X which are homeomorphisms with respect to this topology. The... -
Vector integration
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E.G.F. Thomas --- Johann Bernoulli Institute for Mathematics and Computer Science, The NetherlandsThis paper deals with the theory of integration of scalar functions with respect to a measure with values in a, not necessarily locally convex, topological vector space. It focuses on the extension of such integrals from bounded measurable functions to... -
(L) sets and almost (L) sets in Banach lattices
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Belmesnaoui Aqzzouz --- Faculté des Sciences Economiques, Juridiques et Sociales, Département d'Economie, Morocco Khalid Bouras --- Faculté des Sciences, Département de Mathématiques, MoroccoWe characterize (L) sets and almost (L) sets in Banach lattices. Also, we look at Banach lattices in which these two classes of sets coincide. -
Schoolchildren affected by HIV in rural South Africa: schools as environments that enable or limit coping
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Fumane Khanare --- School of Education, South AfricaThe importance of psychosocial support for the wellbeing of children made vulnerable by HIV is a frequently discussed topic in the fields of education and HIV-related social science research. For children to juggle both the demands of education and the... -
Impact of deltamethrin aerial sprays on adult Cyrtobagous salviniae in Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: CN Kurugundla --- , Botswana MC Bonyongo --- Harry Oppenheimer Okavango Research Centre, Botswana O Serumola --- , BotswanaThe risk and effect of the insecticide deltamethrin, applied aerially in Botswana to control and eradicate tsetse fly, was studied on the non-target weevil Cyrtobagous salviniae, a biocontrol agent of the aquatic weed Salvinia molesta. Environmentally-simulated short-term toxicity bioassay used... -
An Independence Result Concerning Russell-Cardinals
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Eleftherios TachtsisWe show that it is consistent with ZF 0 that there exists a Russell-cardinal α such that the cardinals α 2 and 2α are incomparable. This answers in the negative a related question from Herrlich and Tachtsis “On the number... -
Functorial relationships between lattice-valued topology and topological systems
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: J.T. Denniston S.E. RodabaughThis paper investigates functorial relationships between lattice-valued topology (arising from fuzzy sets and fuzzy logic) and topological systems (arising from topological and localic aspects of domains and finite observational logic in computer science). Two such relationships are embeddings from TopSys... -
Rethinking the reporting of intangibles
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: M Negash --- School of Accountancy, Republic of South AfricaThis paper deals with one of the central problems of financial reporting. Using a mix of qualitative-quantitative approach the paper extends the author’s previous work on intangibles. It attempts to represent the views of users and preparers of financial statements... -
Basic Financial Statements: Objectives, Categories, Principles and Presentation
Item type: Journal Article • Journal: De Ratione • Authors: J.A. Miller --- University of Natal,Objectives ae suggested for each of the basic financial statements in the annual report of a business entity. Categories of information required and the principles used in their classification, are identified and defined. A suggested presentation reflects cash flow alongside... -
Philips’ application of current cost accounting until 1981
Item type: Journal Article • Journal: De Ratione • Authors: M A van Hoepen R.A. --- University of Stellenbosch, I J Lambrechts --- University of Stellenbosch, F J Mostert --- University of Stellenbosch,The N.V. Philips’ Gloeilampenfabrieken has been applying current cost accounting since 1951. In doing so, various systems were chosen over the years. The example of Philips can therefore be seen as an empirical illustration of a number of ways according... -
Philips’ application of current cost accounting since 1982
Item type: Journal Article • Journal: De Ratione • Authors: M A van Hoepen --- University of Stellenbosch, I J Lambrechts --- University of Stellenbosch, F J Mostert --- University of Stellenbosch,The N.V. Philips’ Gloeilampenfabrieken has applied current cost accounting since 1951, In doing so, various systems were chosen over the years. The example of Philips can therefore be seen as an empirical illustration of a number of ways according to... -
On Order Bounded Subsets of Locally Solid Riesz Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Liang Hong --- , , USAIn a topological Riesz space there are two types of bounded subsets: order bounded subsets and topologically bounded subsets. It is natural to ask (1) whether an order bounded subset is topologically bounded and (2) whether a topologically bounded subset... -
The economics of the carbon sequestration potential of plantation forestry in south-western Uganda
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Isaac Kiyingi --- National Forestry Resources Research Institute, Uganda Abdi-Khalil Edriss --- Department of Agricultural and Applied Economics, Faculty of Development Studies, Malawi Alexander MR Phiri --- Department of Agricultural and Applied Economics, Faculty of Development Studies, Malawi Buyinza Mukadasi --- School of Postgraduate Studies, Uganda Susan Tumwebaze --- School of Forestry, Environment and Geographical Sciences, Uganda Hillary Agaba --- National Forestry Resources Research Institute, UgandaThis study assessed the amount of carbon stored and the economic viability of the small-scale Clean Development Mechanism (CDM) carbon offsets in Pinus caribaea and Eucalyptus grandis plantations under varying rotations. Volume equations were used to estimate carbon stocks and... -
Potential of Adelaide, Cradock and Middelburg, South Africa, for out-of-season onion production using different planting materials and planting dates
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marina Jordaan --- Eastern Cape Department of Rural Development and Agrarian Reform, Horticultural Research, South Africa Gesine M Coetzer --- Department of Soil, Crop and Climate Sciences, South Africa James Allemann --- Department of Soil, Crop and Climate Sciences, South AfricaOut-of-season onion production is used to produce onions for the early market (April to September) when onion prices peak. No information with regard to this production method is available for the Eastern Cape. Field experiments were therefore conducted in Adelaide,... -
Lost in Transfer? Exploring the Influence of Culture on the Transfer of Knowledge Categories
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Obinna Alo --- , United KingdomSupported by an extensive review of four-domains of literature (knowledge management, organizational learning, culture, and retail), this study examines the influence of national culture on transfer of knowledge categories in top supermarkets in Africa and the United Kingdom (UK). Data... -
An evaluation of the legislative and policy response of tax authorities to the digitalisation of the economy
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Helena Strauss [cor1] Danie Schutte --- , South Africa Tyson Fawcett --- , AustraliaTax administration and reform within the digitalised economy is an ongoing global debate. In the study, the global tax response to various elements introduced by the digitalisation of the economy is synthesised, analysed and evaluated. The study is set apart... -
Business organisation performance behaviour indicators in Ghana and Kenya: A comparative analysis
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Solomon Abugre Anafo --- , China Yixiang Tian --- , China Bright Nana Kwame Ahia --- , ChinaWe examined business organisation performance indicators across two African countries (Ghana and Kenya) with diverse and volatile economic variables. Utilising secondary data from 2007 to 2017, we applied fixed-effect panel regression to predict profitability indicators from business operations. Our findings... -
Nonmeasurable Vitali set: variations on theme
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Angelo Bella --- University of Catania, Italy (EU) Daniele Puglisi --- University of Catania, Italy (EU) Alfonso Villani --- University of Catania, Italy (EU)We extend Vitali’s procedure to get nonmeasurable sets. Answering a question of Kharazishvili [4], we present a relatively simple argument for passing from singletons to finite sets. Our result is actually much stronger, as it covers even the case of... -
A strong law of large numbers for non identically distributed Pettis integrable random sets in a general Banach space
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: M. El Allali --- University Sidi Mohamed Ben Abdellah, FSTF, Morocco F. Ezzaki --- University Sidi Mohamed Ben Abdellah, FSTF, MoroccoA multivalued version of Cesàro mean convergence theorem is established. As a consequence, various convergence results of strong law of large numbers for pairwise independent Pettis integrable random sets in a Banach space without any additional geometric condition on the... -
Killing tsetse and/or saving wildlife? A multispecies assemblage in colonial Zambia (1895–1959)
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Léa Lacan --- University of Cologne, GermanyThis article investigates the problem of the tsetse fly and the trypanosomiasis disease it conveys as a transforming multispecies assemblage in colonial Zambia from the late nineteenth century until 1959. Based on archival research, it analyses the tsetse fly (Glossina... -
The making, unmaking and adaptation of Mayeyi multispecies entanglements within the Kwando-Linyanti wetlands: eighteenth century to 1990
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: Jessica-Jane Lavelle --- University of Cape Town, South AfricaThe Kwando-Linyanti wetlands of Namibia are known for their rivers, floodplains and woodlands with abundant wildlife and a diversity of birds and fish. Within these landscapes reside the Mayeyi, a Bantu-speaking people whose culture is closely entangled with the wetlands... -
On mid (p, r)-compact operators
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Salthiel Malesela Maepa --- University of Pretoria, South Africa Brian Chihinga Ndumba --- University of Pretoria, South AfricaLet 1 ≤ p ≤ ∞ and 1 ≤ r ≤ p* where p* is the conjugate index of p. We introduce and study mid (p, r)-compact sets and operators. We begin by introducing and defining the mid (p, r)-compact... -
Some properties in vector sequence spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Ioana Ghenciu --- University of Wisconsin-River Falls, River Falls, USA Roxana Popescu --- University of Pittsburgh, USASome classes of operators T on are characterized in terms of the induced operators Tn on each Xn . We study pseudo weakly compact, limited completely continuous, q-convergent, DP q-convergent, limited q-convergent, weak Dunford-Pettis, weak* Dunford-Pettis, weak q-convergent, weak* q-convergent... -
The time-frequency-quantile causal impact of Cable News-based Economic Policy Uncertainty on major assets returns
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Tomiwa Sunday Adebayo --- Cyprus International University, Turkey Oktay Özkan --- Faculty of Economics and Administrative Sciences, Tokat Gaziosmanpasa University, Turkey Emrah Sofuoğlu --- Kirsehir Ahi Evran University, Turkey Ojonugwa Usman --- Lebanese American University, LebanonAfter the collapse of the equity market in the early 2000s, the question of the drivers of financial assets returns preoccupied the interest of investors and policymakers in financial markets. Thus, this study explores how newly developed Cable News-based Economic... -
Two new algebraic structures more general than weak rings
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Teng Zhang --- Zhejiang University of Science and Technology, ChinaIn 1994, Bergelson and Hindman established a remarkable result for IP* sets: for any IP* set A and any sequence l in ℕ, there exists a sum subsystem l′ of l such that all finite sums and finite products of... -
An analysis of totemic animal imagery in Setswana praise poems of the Bakwena ba Mogopa clan of the Southern African Batswana
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Joseph Maleke Sethabela --- Faculty of Humanities, Nelson Mandela University, South AfricaThis article explores the importance of totemic animal imagery in three extracts from Bakwena ba Mogopa praise poems, published in the original Setswana and subsequently translated into English. The poems, identified through convenience sampling, were chosen because they are representative... -
Women and Femininity in Setswana Proverbs: Pragmatic Analysis
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Kealeboga Aiseng --- University of the Witwatersrand, South AfricaMany African cultures have been discredited, ridiculed and negated. This study offers a different perspective on understanding African cultures. The article visits one of the oldest forms of literature in African societies, oral literature, focusing on proverbs to unpack gender... -
Factor conditions and firm resources implications on location attractiveness: A critical assessment and application in shared services industry
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Anbalagi Andy --- Universiti Malaya, Malaysia Rajenthyran Ayavoo --- Universiti Malaya, Malaysia Aida Idris --- Universiti Malaya, MalaysiaThis paper presents an integrated analytical framework by critically synthesizing the Porter-Dunning Diamond and the Resource-Based View (RBV) to evaluate the attractiveness of locations for multinational enterprises (MNEs). The framework was applied to Malaysian shared services firms to explore the... -
Exploring polysemy and its role in lexical sense relations in African languages: Insights from African Wordnet
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Stanley Madonsela --- University of South Africa, South AfricaPolysemy has been considered in terms of sense relations where each sense of a polysemous expression is represented individually in the lexicon. Siswati and other African languages accounted for in African Wordnet do not differ in the characterisation of this...