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The ethics of complexity and the complexity of ethics
Item type: Journal Article • Journal: South African Journal of Philosophy • Authors: Minka Woermann --- Department of Philosophy, Stellenbosch;South Africa Paul Cilliers --- Department of Philosophy, Stellenbosch;South AfricaIn this paper, we investigate the implications that a general view of complexity - i.e. the view that complex phenomena are irreducible - hold for our understanding of ethics. In this view, ethics should be conceived of as constitutive of... -
Modelling the complex dynamics of vegetation, livestock and rainfall in asemiarid rangeland in South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: FD Richardson --- Department of Mathematics and Applied Mathematics, South Africa MT Hoffman --- Plant Conservation Unit, Botany Department, South Africa L Gillson --- Plant Conservation Unit, Botany Department, South AfricaPredicting the effect of different management strategies on range condition is a challenge for farmers in highly variable environments. A model that explains how the relations between rainfall, livestock and vegetation composition vary over time and interact is needed. Rangeland... -
Researching Child Sexual Abuse in South Africa: Complexities in the Field
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Tlakale Nareadi Phasha --- Department of Educational Psychology, South AfricaThis study reports on my fieldwork experiences applying qualitative research strategies to study child sexual abuse in South Africa. It considers the challenges associated with, at three stages of data collection: ethical clearance, recruitment and data collection, followed by possible... -
Ways of Relating and Interacting in School Communities: Lived Experiences of Learners, Educators and Parents
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Ansie Elizabeth Kitching --- North-West University, South Africa Vera Roos --- North-West University, South Africa Ronél Ferreira --- University of Pretoria,This article reports on the findings of a baseline study on social interaction in schools as experienced by learners, educators and parents. A qualitative phenomenological approach was followed, utilising a cross-sectional descriptive survey design. Participants included 1 170 learners aged... -
The quasi-metric of complexity convergence
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Salvador Romaguera Michel SchellekensFor any weightable quasi-metric space (X, d) having a maximum with respect to the associated order ≤ d , the notion of the quasi-metric of complexity convergence on the the function space (equivalently, the space of sequences) Xω , is... -
Lyapunov Convexity Type Theorems For Non-Atomic Vector Measures
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: E. Saab P. SaabGiven a Banach space X, we consider the problem of when the range of a non-atomic, and σ-additive X-valued measure has a convex closure. We give a survey of Lyapunov convexity type theorems pertaining to this problem. We also give... -
On Moduli of Convexity in Banach Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Diómedes Bárcenas Vladimir Gurariy Luisa Sánchez Antonio UllánWe provide an example to show that the moduli of convexity δE and βE are different. Our example allows us to prove that 2 is the best possible constant in the inequality δE ≤ β E ≤ 2 δ E... -
On the Ratios of Arc Lengths to Chord Lengths in Real Banach Spaces
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Senlin Wu --- Department of Mathematics, China Chan He --- Department of Mathematics, ChinaTwo new moduli are introduced to study the ratios of arc lengths to chord lengths in Banach spaces. Basic properties of those two moduli and the relation between them are studied. The relation between those two moduli and some geometric... -
The effect of plant density on epiphytic macroinvertebrates associated with a submerged macrophyte, Lagarosiphon ilicifolius Obermeyer, in Lake Kariba, Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Phiri --- , Zimbabwe A Chakona --- Department of Ichthyology and Fisheries Science, South Africa JA Day --- Freshwater Research Unit, Zoology Department, South AfricaThe effect of variations in the density of a submerged macrophyte, Lagarosiphon ilicifolius, on epiphytic macroinvertebrate community structure in the shallow waters of a sheltered bay of Lake Kariba were investigated. The body size class distributions of a mayfly, Cloeon... -
On moduli of convexity and some applications
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Diómedes Bárcenas --- Departamento de Matemáticas, Venezuela Luisa Sánchez --- Departamento de Matemáticas, VenezuelaWe provide some properties of both moduli of convexity δ and β and derive some applications of the modulus β to the geometry of Banach spaces as well as fixed point theory. -
Chronic diseases, climate change and complexity: the hidden connections
Item type: Journal Article • Journal: South African Family Practice • Authors: R Mash --- Division of Family Medicine and Primary Care, South AfricaIn this paper the argument is presented that we can expect an increase in chronic diseases within developing countries such as South Africa and that this is largely due to changes in lifestyle, such as diet and exercise. While these... -
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... -
Spatial and organisational complexity in the Dwars River Valley, Western Cape
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: C. S. van der Waal --- Department of Sociology and Social Anthropology,Access to land and housing in South Africa is of great importance to a range of actors, leading to contested processes and complex organisational interactions. Using the anthropology of organisations and a process ethnographic approach, the spatial and organisational complexity... -
On evaluating multivariate polynomials over finite fields
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Edoardo Ballico --- Via Sommarive 14, Italy Michele Elia --- Dipartimento di Elettronica, Politecnico di Torino, ItalySome evaluation methods of multivariate polynomials over finite fields are described and their multiplicative complexity is discussed. -
Leadership emergence: the application of the Cynefin framework during a bio-social HIV/AIDS risk-reduction pilot
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Christopher J Burman --- The Rural Development and Innovation Hub, South Africa Marota A Aphane --- The Rural Development and Innovation Hub, South AfricaThis article focuses on the utility of a knowledge management heuristic called the Cynefin framework, which was applied during an ongoing pilot intervention in the Limpopo province, South Africa. The intervention aimed to identify and then consolidate low-cost, innovative bio-social... -
The effect of yield curve shape and level on bond immunisation effectiveness
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Brendan Prettejohn --- Department of Economics, South Africa Gary van Vuuren --- School of Economics, South AfricaThe effect of different-shaped yield curves on the effectiveness of bond immunisation was investigated. Bonds were priced using historical yield curves of various shapes and simulated interest rate shocks applied. The resulting end-values of these bonds were calculated and compared... -
Leaving a Social Venture: Social Entrepreneurial Exit among the Maasai in Northern Tanzania
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Alexander Tetteh Kwasi Nuer --- Social Sciences Department, The Netherlands Miguel Rivera-Santos --- Babson College, USA Carlos Rufín --- Sawyer School of Business, Suffolk University, Gert Van Dijk --- Social Sciences Department, The NetherlandsArguing that the exit of social ventures is likely to follow specific patterns, due the uniqueness of a social entrepreneur’s goals, the social venture’s emphasis on the provision of public goods, and its relationship to stakeholders, we conduct a qualitative... -
Seasonal habitat requirements of Lemon Dove (Aplopelia larvata) in coastal forest: camera-trap surveys of a reclusive species
Item type: Journal Article • Journal: African Zoology • Authors: David A Ehlers Smith --- School of Life Sciences, South Africa Yvette C Ehlers Smith --- School of Life Sciences, South Africa Colleen T Downs --- School of Life Sciences, South AfricaThe modification of natural habitats requires behavioural plasticity, which may be challenging for ‘specialist’ species. Quantifying habitat requirements and behavioural responses of specialists to landscape transformation is thus a priority for baseline data to inform conservation practices. Using camera-trap surveys... -
Between globalisation and Brexit: Migration, pay and the road to modern slavery in the UK hospitality industry
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Steve French --- Institute for Social Inclusion, United KingdomNeo-liberal economic globalisation has promoted deregulation and a weakening of the role of the state in regulating the national economy. The perceived benefits of competition have been used to justify strategies to reduce operational costs and promote a “race to... -
A tale of two habitats: preliminary comparison of fish abundance and diversity between saltmarsh- and mangrove-dominated creeks in the Nahoon Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Keur --- Department of Biodiversity and Conservation Biology, Faculty of Natural Science, South Africa N James --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa A Rajkaran --- Department of Biodiversity and Conservation Biology, Faculty of Natural Science, South AfricaA preliminary assessment of abundance and richness of fishes utilising saltmarsh and mangrove habitats in the Nahoon Estuary, situated on the eastern coast of South Africa, was undertaken during July 2017. The structural composition and complexity of the two habitats... -
Moderating effect of supply chain complexity in governance mechanisms and operational performance relationship: Evidence from a sub-Saharan African market
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Emmanuel Kwabena Anin --- , Ghana Nathaniel Boso --- , Ghana David Asamoah --- , GhanaThis study draws on the tenets of transaction cost economics to examine the moderating effect of supply chain complexity on the relationship between formal control and social control mechanisms, and operational performance. The study argues that under conditions of increased... -
Habitat structure differentially mitigates predation impact of juvenile largemouth bass and Florida bass
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Dumisani Khosa --- , South Africa Josie South --- , South Africa Ryan J Wasserman --- , South Africa Olaf LF Weyl --- , South AfricaHabitat complexity plays an important role in structuring species diversity, behaviour and distribution. Furthermore, habitat complexity can mediate the strength of predator-prey interactions through the provision of prey refugia or through enhancing ambush predation. In this study, we use functional... -
Exit strategies for social venture entrepreneurs in sub-Sahara Africa: A literature review
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Alexander Tetteh Kwasi Nuer --- , Ghana Gert Van Dijk --- , The Netherlands Joost Jongerden --- , The NetherlandsThis paper reviews exit strategies for social venturing entrepreneurs. Exit is important for social venture entrepreneurs because they do not intend to stay in perpetuity in businesses they establish in the countries and communities where such businesses are set up... -
Factors influencing biometric technology adoption: Empirical evidence from Nigeria
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: O. Bello --- , Nigeria O. Olanrewaju --- , South AfricaAn exploratory investigation of factors influencing adoption of biometric technologies among public and private organizations in Nigeria is carried out in this study. Based on a modified technology-organization-environment (TOE) theoretical framework, an empirical analysis using data from questionnaires surveyed on... -
Complex information and accounting standards: Evidence from UK narrative reporting
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Ekaete Efretuei --- , United Kingdom Abel Usoro --- , Nigeria Christina Koutra --- , United Arab EmiratesThe application of International Financial Reporting Standards (IFRS) has been introduced in many countries to enhance efficiencies in financial markets and improve communication in financial reporting. However, extant studies have suggested that the introduction of IFRS has increased narrative complexity,... -
Exit from social assistance in sub-Sahara Africa: The reality of livelihood empowerment against poverty in the Upper West Region, Ghana
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Moses Naiim Fuseini --- Department of Public Policy and Management, SD Dombo University of Business and Integrated Development Studies, Ghana Ibrahim Abu Abdulai --- SD Dombo University of Business and Integrated Development Studies, Ghana William Quarmine --- BlueCrest College, Ghana Shaibu Bukari --- University of Cape Coast, GhanaGlobally, there is a frantic rush to establish social assistance programmes such as Livelihood Empowerment Against Poverty (LEAP), which are viewed as a panacea for poverty reduction. Nonetheless, prior research ignored the critical issue of exiting these programmes, which is... -
Job complexity moderates the relationship between proactive personality and job crafting
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Yunsheng Ruan --- Zhoukou Normal University, China Yungui Guo --- Hunan University of Science and Technology, ChinaThis study examined the moderating role of job complexity on the relationship between proactive personality and job crafting (task, relational, cognitive). Data were collected from 251 employees of two pharmaceutical enterprises located in the Henan Province of China (female =... -
Weak signal detection: A discrete window of opportunity for achieving ‘Vision 90:90:90’?
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Christopher J. Burman --- , , South Africa Marota Aphane --- , , South Africa Peter Delobelle --- , , South AfricaIntroduction: UNAIDS’ Vision 90:90:90 is a call to ‘end AIDS’. Developing predictive foresight of the unpredictable changes that this journey will entail could contribute to the ambition of ‘ending AIDS’. There are few opportunities for managing unpredictable changes. We introduce... -
Alexithymia and mobile phone addiction among college students: Mediation by boredom proneness and anxiety
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Huaibin Jiang --- Fujian Polytechnic Normal University, China Hanyu Liang --- Guizhou Medical University, China Bing Li --- Guizhou University, China Anxie Tuo --- Guizhou Medical University, ChinaThe current study explored the mediating role of boredom and anxiety on the relationship between alexithymia and mobile phone addiction among Chinese college students. Participants (n = 354; female = 49.7%, mean age = 19.30 years, SD = 1.28 years)... -
Exit decision for social venturing entrepreneurs: A conjoint-based study
Item type: Journal Article • Journal: Africa Journal of Management • Authors: Alexander Tetteh Kwasi Nuer --- University of Cape Coast, Ghana Gert van Dijk --- Wageningen University, The Netherlands Hans van Trijp --- Wageningen University, The NetherlandsIn this paper, we seek to study four options of exit decisions and strategies for Social Venture Entrepreneurs. Due to the small number of practicing Social Venture Investors and Entrepreneurs currently using the Social Venture Entrepreneurship model, data were collected... -
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... -
Cessation of South African residency: A critical analysis of juridical double taxation on United Kingdom immovable property held by natural persons
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Elizabeth Fick --- Stellenbosch University, South Africa Maryke Wiesener --- Stellenbosch University, South AfricaWhen a natural person ceases to be resident, there is a deemed disposal of worldwide assets, and a capital gain must be calculated. Taxation levied because of a change in residence is referred to as an exit tax. In this... -
Transgenerational transmission in psychoanalysis: A phenomenology of dislocating errands
Item type: Journal Article • Journal: Indo-Pacific Journal of Phenomenology • Authors: Maurice Apprey --- University of Virginia, USAIn the process of psychical transmission from one generation to the next, who asks what of whom? The evocative expression of an ‘errand’ suggests that a subject is sent on a mission, sent in error, wanders away, and returns home,... -
Guidelines for a simplified Value-Added Tax Act
Item type: Journal Article • Journal: South African Journal of Accounting Research • Authors: Muneer E. Hassan --- University of Johannesburg, South Africa Marina Bornman --- University of Johannesburg, South Africa Adrian Sawyer --- University of Canterbury, New ZealandPurpose: The goal of the study is to provide guidelines for a simplified South African Value-Added Tax (VAT) Act. -
Fractional integral inequalities for s-convex functions in the first sense
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Gültekin Tınaztepe --- Akdeniz University, Turkey Ilknur Yesilce Isik --- Aksaray University, TurkeyCertain fractional integral inequalities via general fractional integral operator are presented for s-convex functions in the first sense. Also, they are restated in terms of the Riemann-Liouville and Hadamard fractional integrals and illustrated. -
Sesotho direct relative qualifiers: Why simple things become complex
Item type: Journal Article • Journal: South African Journal of African Languages • Authors: Matlotlisang Tjabaka-Mokapane --- National University of Lesotho, LesothoSesotho has different types of sentences, including simple, compound and complex sentences. Most scholars who have an interest in the complex sentences claim that such sentences entail both main and subordinate clauses, and that the latter is embodied by complementisers...
