Articles by Keyword: Maximum Likelihood

Search results for Maximum Likelihood

We found 24 results for you
  1. An Evaluation of the Use of “Gentan” Probabilities in Forestry Planning

    Item type: Journal Article • Journal: South African Forestry Journal
    An evaluation of Suzuki's concept of Gentan probabilities is presented. Model fitting is discussed in some detail. It is shown that the Gentan method is suitable only for forests that are at least close to normality.
  2. Precision and accuracy of sward height distributions

    Precision and accuracy of sward height distributions

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Double normal distributions can be used to resolve many sward height frequency distributions into two components representing the 'short' (patches) and 'tall' (non∼patches) areas in the sward. The effect of sample size on the precision and accuracy of parameters of...
  3. Movement pattern and home range of Roman <em>Chrysoblephus laticeps</em>

    Movement pattern and home range of Roman <em>Chrysoblephus laticeps</em>

    Item type: Journal Article • Journal: African Journal of Marine Science
    The movement behaviour of adult Roman Chrysoblephus laticeps (Sparidae) was investigated using mark-and-recapture techniques in the Goukamma Marine Protected Area (GMPA) and the Tsitsikamma National Park (TNP) on the South African temperate south coast. The study was designed to improve...
  4. A simple implementation of the statistical modelling framework Gadget for cod in Icelandic waters

    A simple implementation of the statistical modelling framework Gadget for cod in Icelandic waters

    Item type: Journal Article • Journal: African Journal of Marine Science
    Gadget is a statistical modelling framework that can be used to assess individual fish stocks and to create multispecies, multi-fleet and multi-area models. The development of a complex multispecies model requires understanding of the modelled single-species population. Simple single-species models...
  5. Growth rate of speckled snapper <em>Lutjanus rivulatus</em> (Teleostei: Lutjanidae) based on tag-recapture data from the iSimangaliso Wetland Park, South Africa

    Growth rate of speckled snapper <em>Lutjanus rivulatus</em> (Teleostei: Lutjanidae) based on tag-recapture data from the iSimangaliso Wetland Park, South Africa

    Item type: Journal Article • Journal: African Journal of Marine Science
    The growth rate of speckled snapper Lutjanus rivulatus was investigated using data from a long-term tag-recapture study conducted in the St Lucia Marine Reserve within the iSimangaliso Wetland Park, a World Heritage Site in northern KwaZulu-Natal, South Africa. A total...
  6. The production potential of an <em>acacia karroo</em> community utilized by cattle and goats

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    An investigation was undertaken to determine the relationship between bush density and animal production/ha as well as between bush density and profitability/ha. Boer goat farming was found to be more profitable in the short term than beef ranching. The best...
  7. The effect of fire on germination in five common veld grasses

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The effect of fire on the germination of Themeda triandra, Heteropogon contortus, Panicum maximum, Aristida junciformis and Spowbolus africanus was investigated. Seeds exposed directly to the fire were destroyed in all species. The germination of seeds buried (7 to 9...
  8. Implikasies van subhabitat‐diversiteit en die rol van bestuur op die voorkoms van ‘n aantal grasspesies van die suuragtige‐gemengde bosveld<sup>1</sup>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Die subhabitatvoorkeure van sewe grasspesies en die nie‐grasagtige kruide, tipies van die Suuragtige‐Gemengde Bosveld, is in agt kampe, wat verskillende langtermyn‐beweidingsbehandelings ontvang het, ondersoek. Twee subhabitatte is geidenti‐fiseer, nl. onder borne en tussen bome. Verskille in die subhabitatvoorkeure van die...
  9. Kinetika van nitrifikasie in gronde van die sentrale besproeiingsgebiede in Suid-Afrika

    Kinetika van nitrifikasie in gronde van die sentrale besproeiingsgebiede in Suid-Afrika

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Die verloop van nitrifikasie is in agt gronde, afkomstig van die sentrale besproeiingsgebiede, gemonitor na toediening van (NH4)2SO4 teen die ekwivalent van 100 kg N ha−1 aan beide die bo- en ondergronde. Tydens inkubasie by 30°C is die NH4 +,...
  10. Phosphorous sorption study of selected South African soils

    Phosphorous sorption study of selected South African soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Phosphorous isotherms for 21 selected soils from the Republic of South Africa were constructed and the Langmuir, Freundlich and Temkin sorption models were compared using regression analysis. Over a range of solution concentrations of 0.025 - 2.00 mg P I−1,...