Articles by Author: Henry Kibedi

Search results for Henry Kibedi

We found 45 results for you
  1. Self-regulated learning among teacher education students: Motivational beliefs influence on the use of metacognition

    Self-regulated learning among teacher education students: Motivational beliefs influence on the use of metacognition

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    In the present study, we examined the relationships between motivational beliefs (self-efficacy, task value, and control of learning beliefs) and use of metacognitive learning strategies among teacher education students in Uganda. The sample comprised of 649 students selected from seven...
  2. 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,...
  3. The relationship between the phosphorus requirement and some phosphorus characteristics of selected soils of the South African tobacco industry

    The relationship between the phosphorus requirement and some phosphorus characteristics of selected soils of the South African tobacco industry

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Estimates of the phosphorus requirement (P0.11) of 20 selected soils of the South African tobacco industry were interpolated from phosphorus sorption isotherms. The relationships between P0.11 and various soil phosphorus characteristics, including Bray 2 P content and various indices of...
  4. A single point sorption test for the routine determination of the phosphorus requirement of low to moderate P-fixing soils

    A single point sorption test for the routine determination of the phosphorus requirement of low to moderate P-fixing soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The phosphorus requirement (P0.11) of low to moderate P-fixing soils from the South African tobacco industry and KwaZulu-Natal was interpolated from multiple point P sorption isotherms. The relationship between P0.11 and a single point sorption measurement, consisting of the P...
  5. An improved phosphorus desorption index for the routine determination of the Ambic 2 phosphorus requirement factor of South African soils

    An improved phosphorus desorption index for the routine determination of the Ambic 2 phosphorus requirement factor of South African soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A short (24 h) laboratory incubation study was conducted and plots of P desorbed in Ambic 2 extraction solutions versus added P were constructed for a wide range of soils of varying P fixing capacity representative of the province of...
  6. A study of the kinetics of the adsorption of phosphorus by selected South African soils

    A study of the kinetics of the adsorption of phosphorus by selected South African soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Plots of the decline of the concentration of phosphorus in soil suspensions over time were constructed for 23 selected soils from South Africa and, using non-linear regression analysis, various models were fitted to the time curves, including mechanistic first and...
  7. The relationship between the phosphorus requirement and Ambic 1 phosphorus content of selected South African soils

    The relationship between the phosphorus requirement and Ambic 1 phosphorus content of selected South African soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The phosphorus requirement (P0.11) of low to moderate P-fixing soils from the South African tobacco industry and KwaZulu-Natal was estimated from P sorption isotherms. The relationships between P0.11, Ambic 1 P, clay content and various indices of P sorption were...
  8. Two-step approach to determining some useful phosphorus characteristics of South African soils: a review of work done at the ARC-Institute for Soil, Climate and Water

    Two-step approach to determining some useful phosphorus characteristics of South African soils: a review of work done at the ARC-Institute for Soil, Climate and Water

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Work carried out at the ARC-Institute for Soil, Climate and Water on soil phosphorus characteristics was reviewed. Regression functions were established in order to test the correlations between P parameters, single point indices and soil properties. The parameters investigated were...
  9. ULTRA-UNIVERSAL MODELS

    ULTRA-UNIVERSAL MODELS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    The concept of ultra-universal algebras in varieties is generalized to models of first order theories. Characterizations of theories which have ulta-universal models are found and general examples of ultra-universal models are investigated. In particular we show that a theory has...
  10. Guidance and Counseling Services in South African Schools: Issues and Challenges

    Guidance and Counseling Services in South African Schools: Issues and Challenges

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study seeks to determine if guidance and counseling: (a) lessons are provided to students; (b) services provided are adequate; (c) students are aware of guidance and counseling services provided; and (d) difficulties that counselors face in implementing the programme...