Thesis (MSc (Geography and Environmental Studies))--University of Stellenbosch, 2006. / Sustainable use of the earth’s resources is seen by many authorities as critical to ensure the planet’s survival. In this regard agriculture is seen as a major role player and fundamental link in the chain of sustainability. South Africa, a country with relatively little favourable agricultural land, should therefore preserve high potential areas for agricultural purposes. The Western Cape, with 75% of all medium-potential arable land in South Africa, is a valuable asset. One region targeted for development and where uncertainty prevails regarding its agricultural potential, is the G21B catchment in the Atlantis Growth Corridor (AGC). The AGC is envisaged as long-term growth axis for the Cape Metropole, but conflicting opinions exist on its agricultural possibilities and suitability to absorb urban growth. Consequently, the aim of this project was to evaluate the suitability of this catchment for a number of agricultural landuses. Fuzzy logic, a modification of the land evaluation approach originally developed by the Food and Agricultural Organization of the United Nations (FAO), was used to address this problem. Input data consisted of a soil map and digital elevation model (DEM) of the area. Parameters identified from these sources and applicable to the study were soil texture of the first, second and third horizons, as well as coarse fragments in the top soil, wetness, weathered rock, average pH, effective root depth, and slope. These parameters were compared to the requirements of six landuses, i.e. wheat, wine grapes, potatoes, tomatoes, onions, and citrus, and a fuzzy representation for every landuse was constructed. Expert opinion aided in a weighting process whereby the relative weights of parameters were computed and incorporated into the evaluation. Results showed extensive areas with a relatively high agricultural potential for potatoes and wine grapes. In addition, areas with potential were also identified for wheat, citrus, and tomatoes, albeit on more limited scale. Large areas, however, were deemed unsuitable for the aforementioned agricultural crops and would therefore be suitable to absorb metropolitan growth or to be maintained as conservation areas. The fuzzy logic approach provided insightful results. Problematic parameters were easily identified and no information was lost in the evaluation process. It also allowed for an objective quantitative comparison between crops. This provided freedom in deciding which landuse should be practiced, especially if the focus is on a sustainable rather than the most productive crop.

Thesis (MCUR)--University of Stellenbosch, 2003. / ENGLISH ABSTRACT: South Africa has a proud history of a high standard of health care delivery in State funded hospitals. This implies that high standards of education and care in both medical and nursing training have been achieved. The care of sick and premature newborn infants by nurses is a speciality that has evolved worldwide over the last forty years as a result of various technological developments. In order to ensure the standard of care delivered, protocols of care should be available for nurses to refer to and to measure their work against. There were no protocols of care available in the two Neonatal Units (NICUs) used in this study. Using a non-experimental, exploratory descriptive design, the researcher set about measuring the quality of nursing care in the NICUs. Standards (structure, process and outcome) were written by the researcher, and validated. The results showed that the standards were not met at an acceptable level in various areas. One of the areas of great concern was the lack of effective hand washing. Outcome standards which reflect the consequences of care indicated serious shortages of staff in some cases and insufficient staff training. Recommendations are that a Quality Assurance Program should be introduced with training and education of the nurses working in the NICUs and the introduction of evidencebased practice. Future research should aim at showing the way to improve the service delivered. / AFRIKAANSE OPSOMMING: Suid-Afrika het ‘n trotse geskiedenis van ‘n hoë standard van gesondheidsorgdienslewering in Staatsbefondsde hospitale. Dit impliseer dat hoë standaarde in mediese en verpleegopleiding bereik is. Die versorging van siek en premature pasgebore babas deur verpleegkundiges is ‘n spesialiteit wat oor die afgelope veertig jaar wêreldwyd ontwikkel het as gevolg van verskeie tegnologiese ontwikkelings. Ten einde te verseker dat ‘n hoë standard van sorg gelewer word, moet protokolle beskikbaar wees vir verpleegkundiges om te gebruik en hulle werkverrigting teen te meet. Daar was geen protokolle beskikbaar in die twee neonatale eenhede wat in hierdie studie gebruik is nie. ‘n Nie-eksperimentele, verkennende, beskrywende ontwerp is deur die navorser gebruik om die gehalte van verpleegsorg in die neonatale eenhede te evalueer. Standaarde (struktuur, proses en uitkoms) is deur die navorser opgestel en gevalideer. Die resultate toon aan dat die standaarde in verskeie areas nie aanvaarbaar nagekom word nie. ‘n Kommerwekkende bevinding was die afwesigheid van effektiewe was van hande. Uitkomsstandaarde wat die resultaat van sorg weerspieël, het aangedui dat daar ernstige tekorte aan personeel in sommige gevalle bestaan het asook onvoldoende opleiding van personeel. Aanbevelings is dat ‘n Gehalteversekeringsprogram ingestel behoort te word en met die opleiding van verpleegkundiges werksaam in die neonatale eenhede en evidence-based practice aangespreek moet word. Toekomstige navorsing behoort aan te dui hoe om die diens wat gelewer word, te verbeter.