Articles by Keyword: Simulation Modelling

Search results for Simulation Modelling

We found 103 results for you
  1. Die wiskundige simulering van koolhidraattranslokasie in natuurlike grasveld<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Die groeifunksies benodig vir die simulasie van produksie van ‘n Themeda triandra‐grasveld met behulp van die PUTU 11 simulasiemodel is ontwikkel. Vir die ontwikkeling van die model is die veldproduksiedata van die 1980/81 groeiseisoen gebruik waarna dit suksesvol, vir drie...
  2. The bioeconomic implications of various drought management strategies for a communal cattle herd in the semi‐arid savanna of KwaZuIu‐Natal

    The bioeconomic implications of various drought management strategies for a communal cattle herd in the semi‐arid savanna of KwaZuIu‐Natal

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    The widespread drought of the early 1990s resulted in considerable stock losses in the semi‐arid savanna of KwaZulu‐Natal. We compared the influence of four drought response strategies on herd number, milk yield, cost and net present value for a communal...
  3. Risk management in HIV/AIDS: ethical and economic issues associated with restricting HAART access only to adherent patients

    Risk management in HIV/AIDS: ethical and economic issues associated with restricting HAART access only to adherent patients

    Item type: Journal Article • Journal: African Journal of AIDS Research
    Like many other developing nations, South Africa faces the challenge of mobilising resources in response to the HIV pandemic. There is a large budget gap between the ideal and the actual amount of funding needed to achieve universal access to...
  4. Grazing management that regenerates ecosystem function and grazingland livelihoods

    Grazing management that regenerates ecosystem function and grazingland livelihoods

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Adopting a systems view and regenerative philosophy can indicate how to regenerate ecosystem function on commercial-scale agro-ecological landscapes. Adaptive multi-paddock grazing management is an example of an approach for grazinglands. Leading conservation farmers have achieved superior results in ecosystem improvement,...
  5. Simulating browse production and response of <em>Acacia karroo</em> to defoliation I. Model description and sensitivity analyses

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The model is aimed at synthesizing existing data to enhance the understanding of this data and explore the consequences of possible browse management strategies. It gives a good reproduction of the shoot and leaf growth responses used to develop it...
  6. Development of a technique for assessing veld condition in the Kruger National Park using key grass species

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    A technique based on key grass species was developed for assessing veld condition in the Kruger National Park in terms of its potential to produce grass forage for consumption by herbivores and fine fuels for veld burning. Fourteen grass species...
  7. The regrowth of <em>Colophospermum mopane</em> following clearing

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The recovery of cleared Colophospermum mopane thicket in the eastern Transvaal lowveld, to a level where its effect on grass production is similar to that in the pre‐cleared state, occurs within fourteen years. Based on certain assumptions, the ‘effective duration’...
  8. Simulating browse production and response of <em>Acacia karroo</em> to defoliation II. Evaluation of browse management systems and strategies

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    To assess management implications, a model was used to simulate the response of Acacia karroo to a wide range of different climatic patterns and defoliation regimes. The model predicts that if poor growing conditions initiate growth later in spring than...
  9. Remote sensing applications for monitoring rangeland vegetation

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Remote sensing techniques hold considerable promise for the inventory and monitoring of natural resources on range‐lands. A significant lack of information concerning basic spectral characteristics of range vegetation and soils has resulted in a lack of rangeland applications. To use...
  10. Assessment of recent drought severity for natural grassland at three locations

    Assessment of recent drought severity for natural grassland at three locations

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The relative severity of drought in natural grassland during three growing seasons was analyzed for three South African weather stations. Computer simulation of grassland water use, based upon weather records, was used to quantify drought and to compare the conditions...