Articles by Keyword: Power

Search results for Power

We found 42 results for you
  1. 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,...
  2. Effect of leaf feeding by <em>Melanaphis sacchari</em> (Zehntner) (Homoptera: Aphididae), on sorghum grain quality

    Effect of leaf feeding by <em>Melanaphis sacchari</em> (Zehntner) (Homoptera: Aphididae), on sorghum grain quality

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A study was conducted to determine the effect of leaf feeding by the aphid, Melanaphis sacchari, on grain quality of sorghum. A field trial was planted with two sub-blocks. Each sub-block was planted with ten similar sorghum hybrids. One sub-block...
  3. Sorghum malting quality as affected by availability of suitable cultivars

    Sorghum malting quality as affected by availability of suitable cultivars

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Malting quality of grain samples of commercially available malting class sorghum cultivars was determined over five seasons and three localities for each season. The number of cultivars included in the National Sorghum Cultivar Trials has declined in recent years. The...
  4. A rapid demonstration of the self-thinning rule using radish

    A rapid demonstration of the self-thinning rule using radish

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The self-thinning rule describes the relationship between individual mass and density in crowded evenly-aged plant populations in which the slope of the relationship is always greater than -1. This study investigated whether the rule could be demonstrated in six weeks...
  5. Hwang's Quasi-Power-Theorem in Dimension Two

    Hwang's Quasi-Power-Theorem in Dimension Two

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In a frequently used theorem, H.K. Hwang proved convergence rates for the central limit theorem of a class of random variables whose moment generating function has a "quasi-power" structure. We generalise this result to random vectors of two variables.
  6. Domestic Workers' Experiences of Power and Oppression in South Africa

    Domestic Workers' Experiences of Power and Oppression in South Africa

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study examines the work experiences of domestic workers in the context of socio-economic-political legislation promulgated to protect their social rights in the new South Africa. It gains insight into the power relations and embedded tensions between employers and domestic...
  7. Relations of Power in Different Spaces: An Exploration of the Schooling Experiences of Children in an HIV/AIDS Context

    Relations of Power in Different Spaces: An Exploration of the Schooling Experiences of Children in an HIV/AIDS Context

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    In this article we explore how the concept of relations of power in different spaces plays out in the lives of school children living in an HIV/AIDS context, and how processes of inclusion and exclusion are associated with particular spaces...
  8. Constructions of Masculinity, Mental Toughness and the Inexpressibility of Distress among a Selected Group of South African Veterans of the ‘Bush War’ in Namibia

    Constructions of Masculinity, Mental Toughness and the Inexpressibility of Distress among a Selected Group of South African Veterans of the ‘Bush War’ in Namibia

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    The study examined the manner in which conscripted combat veterans make meaning of their violent experiences during the apartheid-era ‘Bush War’ in the border area between Namibia and Angola. A total of 43 ex-combatants participated in the study (23 Afrikaans-speaking;...
  9. The Meaning of Emotion in the White Afrikaans Language Group: A Componential Emotion Theory Approach

    The Meaning of Emotion in the White Afrikaans Language Group: A Componential Emotion Theory Approach

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study determined the meaning of emotion in a sample of white Afrikaans-speaking adults (n=120; males =32, females=88, age range =18–48+ years). Data were collected using the Meaning Grid (Scherer, 2005). The analysis examined the factor loadings of emotion words...
  10. Exploring Perceptions of Xenophobia in a Sample of South African Employees

    Exploring Perceptions of Xenophobia in a Sample of South African Employees

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This brief report aimed to explore the perceptions of xenophobia within a sample of South African employees. Data on participants' views regarding xenophobia, related xenophobic violence and causes were collected from 127 respondents (males=43%, females=57%, with the majority of respondents...