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Showing results 168381 to 168390 of 181733

  1. The integration of strategies for non-formal education and development in third world communities
    Kleinen, Ensline, 2013-09-07T01:05:38Z
    The purpose of this dissertation is to investigate the nature and potential of an integrated strategy for non-formal education and development that will alleviate the problem of milieu-deprivation in Third World communities. This integrated strategy includes compensatory education, community develop ...
  2. Particle swarm optimisation in dynamically changing environments - an empirical study
    Duhain, Julien Georges Omer Louis, 2013-09-07T01:06:06Z
    Real-world optimisation problems often are of a dynamic nature. Recently, much research has been done to apply particle swarm optimisation (PSO) to dynamic environments (DE). However, these research efforts generally focused on optimising one variation of the PSO algorithm for one type of DE. The ai ...
  3. Risk and reliability of exploration methods used to define a heavy mineral sand deposit in Kwa-Zulu Natal, South Africa
    Boekhoud, Karina, 2013-09-07T01:06:13Z
    The objective of the treatise is to review the sample methodology and the exploration methods at a heavy mineral sands deposit. The level of confidence and the risk associated with the resource calculations will be established based on the sample methodology. Two drilling methods used at Hillendale ...
  4. An investigation into the formation of the lower Main Zone in the eastern limb of the Bushveld complex, South Africa
    Clark-Halkett, Chantelle Estelle, 2013-09-07T01:06:29Z
    The Main Zone is dominated by medium – grained, homogeneous gabbronorite, and anorthosites. The plagioclase compositions of the core is ((Na(0.227 – 0.353), K (0.012 – 0.046), Ca (0.651 – 0.777)) Al (1.630 – 1.752) Si (2.183 – 2.345) O8) and at the rim is ((Na (0.189 – 0.371), K (0.005 – 0.108), Ca ...
  5. Optimal production rates in opencast coal mining : a value driven approach
    De Jongh, Iwan, 2013-09-07T01:06:38Z
    From small exploration companies to multi-national mining houses all at some point in the project lifetime embark on evaluation studies where the most value-generating method of extracting the ore is investigated. Early phases in exploration projects will have the need for an order-of-magnitude esti ...
  6. The effect of a topical combined anti-inflammatory antibiotic preparation on the outcome of third molar surgery
    Van Eeden, Simon Peter, 2013-09-07T01:06:39Z
    Third molar surgery may be associated with a number of complications the most common of which are postoperative pain, swelling and trismus, and dry socket formation. The appearance of these post-operative sequelae is intimately related to the manifestations of inflammation in response to tissue inju ...
  7. The ecology of Chief’s Island and the adjacent floodplains of the Okavango Delta, Botswana
    Biggs, Russell C., 2013-09-07T01:08:11Z
    The study area lies in the central Okavango Delta, Botswana, and was proclaimed a game reserve extension on 2nd July 1976. Peoples of Khoisanoid origin first colonized the area. Bantu speaking baYei followed in about 1750 and baTawana in about 1795. The area is still completely undeveloped and prist ...
  8. Modelling the photocatalytic degradation kinetics of organochloride chemicals in aqueous solutions
    Khuzwayo, Zakhele Siyanda Prince, 2013-09-07T01:08:12Z
    Polychlorinated endocrine disrupting chemicals are environmental pollutants that are increasingly found in water sources. As a result of their hydrophobic properties, they generally accumulate in adipocytes of humans and wildlife when ingested. In this study, the feasibility of the advanced oxidatio ...
  9. An investigation into popular methods for constructing yield curves
    Du Preez, Paul Fourie, 2013-09-07T01:08:17Z
    In this dissertation we survey a variety of methods for constructing zero-coupon yield curves. We show that, when accuracy is of the utmost importance, the bootstrap described by Hagan and West (2006), Smit (2000), and Daeves and Parlar (2000) provides the ideal framework. This bootstrap requires th ...
  10. Low-field microwave absorption in pulsed lased deposited FeSi thin films
    Gavi, H.M. (Happyson Michael), 2013-09-07T01:08:23Z
    The magnetic behavior of cubic B20 crystal structure FeSi thin film has been previously probed at macroscopic level using a magnetometer. The results revealed ferromagnetic state with significant hysteresis. This is contrary to the bulk with the same cubic B20 crystal structure that is paramagnetic. ...