Articles by Keyword: Principal Component Analysis

Search results for Principal Component Analysis

We found 266 results for you
  1. Towards a method of assessing the veld condition of the valley bushveld in the Eastern Cape

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Currently, no technique is available for assessing the condition of Valley Bushveld in the Eastern Cape. The objective of this investigation was to develop a method of scoring bushveld according to its productive condition. It was established, through principal component...
  2. Die invloed van brand en maai op onbeweide langgrasveld in Natal

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    The effect of burning and mowing on ungrazed tall grassveld of Natal. The trial was conducted on the Estcourt Research Station to show the effect of 14 burning and mowing treatments without grazing in the tall grassveld of Natal. The...
  3. Application of Partial Least Squares regression to relate tastiness of boiled potatoes to chemical and physical tests

    Application of Partial Least Squares regression to relate tastiness of boiled potatoes to chemical and physical tests

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Partial Least Squares regression (PLS) was used to understand the relationship between 15 sensory attributes of potatoes boiled in their skins as dependent variables (Y), and six objective (chemical and physical) measurements as the independent variables (X). The ARC-Sensory Analysis...
  4. Relationships between soil buffer capacity and selected soil properties in a resource-poor farming area in the Mpumalanga Province of South Africa

    Relationships between soil buffer capacity and selected soil properties in a resource-poor farming area in the Mpumalanga Province of South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    In this study, the soil buffer capacity (soil BC) was measured for 80 topsoil samples of the most dominant soil forms in a small-scale farming area. Soils used in the study ranged from weakly to strongly buffered, with soil BC...
  5. Phytochemical content, antioxidant capacity and physicochemical properties of pomegranate grown in different microclimates in South Africa

    Phytochemical content, antioxidant capacity and physicochemical properties of pomegranate grown in different microclimates in South Africa

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    We investigated the antioxidant and physicochemical properties of pomegranate (Punica granatum cv. Bhagwa) fruit grown in three microclimates in South Africa. The physicochemical properties of fruit peel and arils differed among the growing locations, including weight and redness color of...
  6. The use of multivariate analysis as a tool to illustrate the influence of environmental variables on phytoplankton composition in the Vaal River, South Africa

    The use of multivariate analysis as a tool to illustrate the influence of environmental variables on phytoplankton composition in the Vaal River, South Africa

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The highly eutrophic Vaal River system is subjected to algal blooms that cause problems ranging from aesthetically unacceptable conditions to the release of toxins. In order to understand how environmental variables influence one another and to determine the key environmental...
  7. Fatty acid composition of muscle and heart tissue of Nile perch, <em>Lates niloticus</em>, and Nile tilapia, <em>Oreochromis niloticus</em>, from various populations in Lakes Victoria and Kioga, Uganda

    Fatty acid composition of muscle and heart tissue of Nile perch, <em>Lates niloticus</em>, and Nile tilapia, <em>Oreochromis niloticus</em>, from various populations in Lakes Victoria and Kioga, Uganda

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The fatty acid composition in the heart tissue and muscle tissue of the Nile perch, Lates niloticus, and Nile tilapia, Oreochromis niloticus populations from Lakes Kioga and Victoria was determined by methanolysis and gas chromatography of the resulting fatty acid...
  8. Fatty acids of polar lipids in heart tissue are good taxonomic markers for tropical African freshwater fish

    Fatty acids of polar lipids in heart tissue are good taxonomic markers for tropical African freshwater fish

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    The fatty acid profiles in total, neutral and polar lipids in the heart tissues of five freshwater fish species (Nile perch Lates niloticus, Nile tilapia Oreochromis niloticus, marbled lungfish Protopterus aethiopicus, Bagrus docmak and African catfish Clarias gariepinus) from Lakes...
  9. Water-body preferences of dominant calanoid copepod species in the Angola-Benguela frontal zone

    Water-body preferences of dominant calanoid copepod species in the Angola-Benguela frontal zone

    Item type: Journal Article • Journal: African Journal of Marine Science
    The distribution of five dominant calanoid copepods was related to different water masses in the Angola-Benguela Front system. Five water bodies were identified by principal component analysis, on the basis of abiotic parameter such as temperature, salinity, dissolved oxygen, phosphate,...
  10. Biplots for displaying multidimensional financial performance data graphically

    Biplots for displaying multidimensional financial performance data graphically

    Item type: Journal Article • Journal: South African Journal of Accounting Research
    Invariably financial performance of an enterprise is not judged on a single criterion but is described in terms of various related financial performance indicators. Financial decision makers are thus typically confronted with multidimensional data. This paper demonstrates to financial managers...