Articles by Author: Mark De Fellowes

Search results for Mark De Fellowes

We found 93 results for you
  1. Game fence presence and permeability influences the local movement and distribution of South African mammals

    Game fence presence and permeability influences the local movement and distribution of South African mammals

    Item type: Journal Article • Journal: African Zoology
    Fences are utilised throughout the world to restrict the movements of wildlife, protecting them from threats and reducing human–wildlife conflict. In South Africa the number of privately-owned fenced game reserves has greatly increased in recent years, but little is known...
  2. (Φ, <em>M</em>)–extensions of near-rings

    (Φ, <em>M</em>)–extensions of near-rings

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In 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.
  3. Approach structures and measures of connectedness

    Approach structures and measures of connectedness

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Measures of connectedness versus disconnectedness are introduced in anarbitrary topological construct as fixed points of a Galois connection. This places measures of connectedness found in the literature in a general categorical frame-work.
  4. SHORT NOTES

    SHORT NOTES

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
  5. TOWARDS THE SUSTAINABLE WATER QUALITY MANAGEMENT OF AN URBANISED AFRICAN RIVER CATCHMENT: THE KLIP RIVER, GAUTENG, SOUTH AFRICA

    TOWARDS THE SUSTAINABLE WATER QUALITY MANAGEMENT OF AN URBANISED AFRICAN RIVER CATCHMENT: THE KLIP RIVER, GAUTENG, SOUTH AFRICA

    Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences
    A water quality impact assessment of Greater Johannesburg's three southern wastewater treatment works was undertaken to quantify present and predict future contributions of pollution to the Klip River, as well as the impact on downstream users. This information is required...
  6. Scale, heterogeneity and secondary production in tropical rangelands

    Scale, heterogeneity and secondary production in tropical rangelands

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Tropical rangelands across the world are experiencing land use intensification pressures which are reducing the spatial scale of grazing management units. There are implications of a reduction in scale on environmental heterogeneity and its relationship with secondary production of large...
  7. South African Adolescents' Career Development through the Lens of the Systems Theory Framework: An Exploratory Study

    South African Adolescents' Career Development through the Lens of the Systems Theory Framework: An Exploratory Study

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    Adolescent career development has predominantly been studied in the context of middle class Eurocentric cultures and there have been calls for greater attention to the career development of non-dominant and disadvantaged groups. Further, there have been calls to explore career...
  8. Occupational Interests and Aspirations of Rural Black South African Children: Considerations for Theory, Research and Practice

    Occupational Interests and Aspirations of Rural Black South African Children: Considerations for Theory, Research and Practice

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    There has been limited international and South African research on the career development of rural and socioeconomically disadvantaged children. The present research provides baseline information on the career development of rural, low socioeconomic status, Black upper elementary school children (N...