Characterisation of communal rangeland degradation and evaluation of vegetation restoration techniques in the Eastern Cape, South Africa
- Authors: Lesoli, 'Mota Samuel
- Date: 2011-12
- Subjects: Communal rangelands , Grazing
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24316 , vital:62624
- Description: This study assessed the social factors influencing poor communal rangeland management, which are assumed to result in rangeland degradation. This was followed by, examination of biophysical characteristics of rangeland degradation in communal areas. To relate social factors featuring in communal rangeland management with rangeland degradation, biophysical factors influencing livestock grazing distribution patterns were studied. To establish the solution to communal rangeland degradation, rangeland restoration techniques were evaluated. The study was conducted at Amakhuze Tribal Authority (ATA) (S32o 38´, E26o56, 763 - 1500 m.a.s.l) composed of six villages and Phandulwazi Agricultural High School (S32o 39´ and E26o 55´, 747 m.a.s.l). Focus group discussions were conducted in six villages and questionnaire surveys in four randomly selected villages to assess social factors influencing communal rangeland degradation. Communal rangeland degradation biophysical characteristics were assessed. Biophysical factors affecting livestock grazing distribution pattern were examined through direct field observations for 12 months. Restoration techniques were evaluated on 26 plots. The social factors influencing communal rangeland management include lack of skills on rangeland management for farmers, lack of individual/community obligation on grazing management, lack of effective policies and/or poor enforcement accompanied by lack of effective institutions governing rangeland utilisation and management. Communal rangelands were more (χ 2 = 2612.07, df = 26, p < 0.01) degraded compared with controlled grazing areas. Within the communal rangelands, land degradation was higher at the low-lying areas, compared to foothills, midslopes, and mountaintop (crest). Rangeland degradation in communal areas was characterised by poor forage productivity and poor vegetation cover , higher soil unconfined compressive strength (UCS) (4.5 kg/cm2) with low hydraulic conductivity (5.21 x 10-3) and physical soil loss characteristics such presence of terracettes, pedestals, rills and gullies. Grazing distribution was higher at valley bottom (r2 = 0.404, p < 0.001), low altitude (r2 = -0.007, p < 0.001), closer to water points (r2 = -0.001, p < 0.001), and on grassland vegetation (r2 = 0.620, p < 0.001). Introduction of seedlings with microcatchment combined with brushpack promoted (p < 0.05) higher number of tillers (13), leaves (42) and reduced seedling mortality (10.4percent). T. triandra produced higher (p < 0.05) number of tillers (12) and leaves (39) but low number of inflorescence (0.7) with higher mortality rates (25.3percent) compared to P. dilatatum. Where plant propagules were introduced as seeds, use of microcatchment promoted higher seed germination (F = 38.84, p < 0.05) and maintained higher plant density (F = 37.43, p < 0.05). E. curvula seeds attained higher germination rate and maintained higher plant density compared to D. eriantha and P. Maximum. Use of microcatchment, brushpack, and water spreading system promoted soil water retention. It is important that any interventions aimed at improving communal rangeland management, controlling rangeland degradation in the communal areas, or restoring degraded rangelands to consider the social factors driving rangeland management and biophysical factors influencing grazing distribution pattern. Rangeland restoration techniques for communal areas should be centred on their ability to collect and retain water to promote restoration performance of introduced plant propagules. , Thesis (PhD) -- Faculty of Science and Agriculture, 2011
- Full Text:
- Authors: Lesoli, 'Mota Samuel
- Date: 2011-12
- Subjects: Communal rangelands , Grazing
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24316 , vital:62624
- Description: This study assessed the social factors influencing poor communal rangeland management, which are assumed to result in rangeland degradation. This was followed by, examination of biophysical characteristics of rangeland degradation in communal areas. To relate social factors featuring in communal rangeland management with rangeland degradation, biophysical factors influencing livestock grazing distribution patterns were studied. To establish the solution to communal rangeland degradation, rangeland restoration techniques were evaluated. The study was conducted at Amakhuze Tribal Authority (ATA) (S32o 38´, E26o56, 763 - 1500 m.a.s.l) composed of six villages and Phandulwazi Agricultural High School (S32o 39´ and E26o 55´, 747 m.a.s.l). Focus group discussions were conducted in six villages and questionnaire surveys in four randomly selected villages to assess social factors influencing communal rangeland degradation. Communal rangeland degradation biophysical characteristics were assessed. Biophysical factors affecting livestock grazing distribution pattern were examined through direct field observations for 12 months. Restoration techniques were evaluated on 26 plots. The social factors influencing communal rangeland management include lack of skills on rangeland management for farmers, lack of individual/community obligation on grazing management, lack of effective policies and/or poor enforcement accompanied by lack of effective institutions governing rangeland utilisation and management. Communal rangelands were more (χ 2 = 2612.07, df = 26, p < 0.01) degraded compared with controlled grazing areas. Within the communal rangelands, land degradation was higher at the low-lying areas, compared to foothills, midslopes, and mountaintop (crest). Rangeland degradation in communal areas was characterised by poor forage productivity and poor vegetation cover , higher soil unconfined compressive strength (UCS) (4.5 kg/cm2) with low hydraulic conductivity (5.21 x 10-3) and physical soil loss characteristics such presence of terracettes, pedestals, rills and gullies. Grazing distribution was higher at valley bottom (r2 = 0.404, p < 0.001), low altitude (r2 = -0.007, p < 0.001), closer to water points (r2 = -0.001, p < 0.001), and on grassland vegetation (r2 = 0.620, p < 0.001). Introduction of seedlings with microcatchment combined with brushpack promoted (p < 0.05) higher number of tillers (13), leaves (42) and reduced seedling mortality (10.4percent). T. triandra produced higher (p < 0.05) number of tillers (12) and leaves (39) but low number of inflorescence (0.7) with higher mortality rates (25.3percent) compared to P. dilatatum. Where plant propagules were introduced as seeds, use of microcatchment promoted higher seed germination (F = 38.84, p < 0.05) and maintained higher plant density (F = 37.43, p < 0.05). E. curvula seeds attained higher germination rate and maintained higher plant density compared to D. eriantha and P. Maximum. Use of microcatchment, brushpack, and water spreading system promoted soil water retention. It is important that any interventions aimed at improving communal rangeland management, controlling rangeland degradation in the communal areas, or restoring degraded rangelands to consider the social factors driving rangeland management and biophysical factors influencing grazing distribution pattern. Rangeland restoration techniques for communal areas should be centred on their ability to collect and retain water to promote restoration performance of introduced plant propagules. , Thesis (PhD) -- Faculty of Science and Agriculture, 2011
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Delays in seeking treatment for sick children in rural Malawi: A study of the utilisation of village clinics
- Bonongwe, Enock (https://orcid.org/0000-0002-2819-130X)
- Authors: Bonongwe, Enock (https://orcid.org/0000-0002-2819-130X)
- Date: 2011-12
- Subjects: Community Health Services , Rural Health , Health Planning
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23326 , vital:57314
- Description: The world’s highest mortality figures are found in developing countries among under-five children (Black et al., 2003:2227). Efforts in reducing childhood mortality are stifled if treatment is delayed (sought after 24 hours). The aim of this study was to find out the factors that contribute to delays in seeking treatment for sick children in a community where health services are free and accessible. From data collected using a questionnaire through face-to-face interviews and focus group discussions (FGDs), the study found out the factors that contribute to delayed care. It collected data from 150 mothers who sought treatment at village clinics within 14 days prior to the survey date. Qualitative data were collected in five FGDs with old women, young women, men, youth and community leaders. The study found that out of 150 mothers, 54 percent delayed seeking treatment for sick children. Mothers who had given sick children home treatment and those who sought treatment from other providers for the same illness brought to the village clinic were more likely to delay care. FGDs revealed that most factors contributing to delayed care were to do with the health system, although beliefs and perceptions played a part. In summary, delays in seeking treatment for sick children are a product of an interplay of many factors. Overall, it was found that caregivers’ interpretation of the child’s illness influenced timeliness of care and the choice of health care provider. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2011
- Full Text:
- Authors: Bonongwe, Enock (https://orcid.org/0000-0002-2819-130X)
- Date: 2011-12
- Subjects: Community Health Services , Rural Health , Health Planning
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23326 , vital:57314
- Description: The world’s highest mortality figures are found in developing countries among under-five children (Black et al., 2003:2227). Efforts in reducing childhood mortality are stifled if treatment is delayed (sought after 24 hours). The aim of this study was to find out the factors that contribute to delays in seeking treatment for sick children in a community where health services are free and accessible. From data collected using a questionnaire through face-to-face interviews and focus group discussions (FGDs), the study found out the factors that contribute to delayed care. It collected data from 150 mothers who sought treatment at village clinics within 14 days prior to the survey date. Qualitative data were collected in five FGDs with old women, young women, men, youth and community leaders. The study found that out of 150 mothers, 54 percent delayed seeking treatment for sick children. Mothers who had given sick children home treatment and those who sought treatment from other providers for the same illness brought to the village clinic were more likely to delay care. FGDs revealed that most factors contributing to delayed care were to do with the health system, although beliefs and perceptions played a part. In summary, delays in seeking treatment for sick children are a product of an interplay of many factors. Overall, it was found that caregivers’ interpretation of the child’s illness influenced timeliness of care and the choice of health care provider. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2011
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Experiences of community psychiatric nurses and guardians of discharged psychiatric patients on the effectiveness of community mental health services of the Zomba district in Malawi
- Authors: Kachingwe, Bertha Maggie
- Date: 2011-12
- Subjects: Psychiatric nursing , Community mental health services
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24183 , vital:62440
- Description: Sturdy: Experiences of community psychiatric nurses and guardians of discharged psychiatric patients on the effectiveness of community mental health services of the Zomba District in Malawi. Purpose: The purpose of the study was to explore and describe the experiences of community psychiatric nurses and guardians of discharged psychiatric patients with regard to failure of Community Mental Health Services of the Zomba District, and make recommendations to improve community mental health services. Although such services exist, their effectiveness is unknown, either from the nurses’ point of view or from the consumers’ point of view. Method: A qualitative approach with phenomenological research design was used to answer the research question on the effectiveness of the services. This method was chosen because the researcher was committed to explore the lived in-depth experiences of the study participants. A purposive sampling method was used to select participants for the study, who were selected based on their knowledge of the phenomena. Data collection Instruments used were unstructured interviews, using face- to- face interaction. One broad, open-ended question was used to gather information from the participants. Data analysis was done using Atlas.ti software to help the researcher uncover complex phenomena hidden in the text. Findings: Participants from both groups overwhelmingly reported that community mental health services were not effective. Four categories and eleven themes of barriers impacting on ineffective services emerged from the nurses. For example; Inadequate service provision related to unavailability of resources (human, time and materials). Themes hindering effective services emerged from the guardians for example; Services not accessible related to inconsistent appointment dates, shortage of medications and poor economic status of participants. , Thesis (MCur) -- Faculty of Science and Agriculture, 2011
- Full Text:
- Authors: Kachingwe, Bertha Maggie
- Date: 2011-12
- Subjects: Psychiatric nursing , Community mental health services
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24183 , vital:62440
- Description: Sturdy: Experiences of community psychiatric nurses and guardians of discharged psychiatric patients on the effectiveness of community mental health services of the Zomba District in Malawi. Purpose: The purpose of the study was to explore and describe the experiences of community psychiatric nurses and guardians of discharged psychiatric patients with regard to failure of Community Mental Health Services of the Zomba District, and make recommendations to improve community mental health services. Although such services exist, their effectiveness is unknown, either from the nurses’ point of view or from the consumers’ point of view. Method: A qualitative approach with phenomenological research design was used to answer the research question on the effectiveness of the services. This method was chosen because the researcher was committed to explore the lived in-depth experiences of the study participants. A purposive sampling method was used to select participants for the study, who were selected based on their knowledge of the phenomena. Data collection Instruments used were unstructured interviews, using face- to- face interaction. One broad, open-ended question was used to gather information from the participants. Data analysis was done using Atlas.ti software to help the researcher uncover complex phenomena hidden in the text. Findings: Participants from both groups overwhelmingly reported that community mental health services were not effective. Four categories and eleven themes of barriers impacting on ineffective services emerged from the nurses. For example; Inadequate service provision related to unavailability of resources (human, time and materials). Themes hindering effective services emerged from the guardians for example; Services not accessible related to inconsistent appointment dates, shortage of medications and poor economic status of participants. , Thesis (MCur) -- Faculty of Science and Agriculture, 2011
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Exploring the role of rural entrepreneurship on welfare in South Africa: a case of Nkonkobe Municipal area in the Eastern Cape Province
- Ngorora, Grace Portia Kuda https://orcid.org/0000-0003-4756-3137
- Authors: Ngorora, Grace Portia Kuda https://orcid.org/0000-0003-4756-3137
- Date: 2011-12
- Subjects: Rural development projects , Public welfare --South Africa , Entrepreneurship
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26357 , vital:65248
- Description: The study set out to explore the role of rural entrepreneurship on welfare in Nkonkobe Municipal Area of the Eastern Cape Province of South Africa. The objectives of the study were to identify the role rural entrepreneurship plays on welfare and determine the factors that promote or hinder rural entrepreneurship. Semi-structured questionnaires were administered to establish the perceptions of rural entrepreneurs. Findings from the study suggest that rural entrepreneurship contributes immensely to the welfare of individuals, family and community in Nkonkobe Municipal Area of the Eastern Cape Province. Rural entrepreneurship is the most important activity for entrepreneurs for it enables individuals to access quality health facilities and experience an improved quality of life. The study also found that families have more income which they use to acquire assets. They are able to send children to good schools using earnings from their business activities. Entrepreneurs can also contribute to the welfare of their relatives as result of being entrepreneurial. The results imply that rural entrepreneurship improves the quality of livelihood for rural dwellers. There was a significant correlation between the role rural entrepreneurship plays in generating more income and the rural dwellers ability to send their children to good schools. Findings from this study also showed that rural entrepreneurship improves the quality of livelihood in rural areas through the creation of wealth and employment. For most respondents 83 percent entrepreneurship alone provides them with income. Social capital in the form of special relationships, access to critical information, unique local knowledge and previous experience was ranked the most important factor when starting businesses. Irregular payments from customers were considered the factor affecting entrepreneurs most in Nkonkobe Municipality. Lack of finance was ranked the factor hindering rural entrepreneurship most in Nkonkobe Municipality. Training and educational programs, capacitating as well as support from government were found to be very important for entrepreneurship to grow in Nkonkobe Municipality. , Thesis (MSoc) -- Faculty of Management and Commerce, 2011
- Full Text:
- Authors: Ngorora, Grace Portia Kuda https://orcid.org/0000-0003-4756-3137
- Date: 2011-12
- Subjects: Rural development projects , Public welfare --South Africa , Entrepreneurship
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26357 , vital:65248
- Description: The study set out to explore the role of rural entrepreneurship on welfare in Nkonkobe Municipal Area of the Eastern Cape Province of South Africa. The objectives of the study were to identify the role rural entrepreneurship plays on welfare and determine the factors that promote or hinder rural entrepreneurship. Semi-structured questionnaires were administered to establish the perceptions of rural entrepreneurs. Findings from the study suggest that rural entrepreneurship contributes immensely to the welfare of individuals, family and community in Nkonkobe Municipal Area of the Eastern Cape Province. Rural entrepreneurship is the most important activity for entrepreneurs for it enables individuals to access quality health facilities and experience an improved quality of life. The study also found that families have more income which they use to acquire assets. They are able to send children to good schools using earnings from their business activities. Entrepreneurs can also contribute to the welfare of their relatives as result of being entrepreneurial. The results imply that rural entrepreneurship improves the quality of livelihood for rural dwellers. There was a significant correlation between the role rural entrepreneurship plays in generating more income and the rural dwellers ability to send their children to good schools. Findings from this study also showed that rural entrepreneurship improves the quality of livelihood in rural areas through the creation of wealth and employment. For most respondents 83 percent entrepreneurship alone provides them with income. Social capital in the form of special relationships, access to critical information, unique local knowledge and previous experience was ranked the most important factor when starting businesses. Irregular payments from customers were considered the factor affecting entrepreneurs most in Nkonkobe Municipality. Lack of finance was ranked the factor hindering rural entrepreneurship most in Nkonkobe Municipality. Training and educational programs, capacitating as well as support from government were found to be very important for entrepreneurship to grow in Nkonkobe Municipality. , Thesis (MSoc) -- Faculty of Management and Commerce, 2011
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Knowledge and attitudes of professional nurses towards HIV and AIDS patients at the Libode District Health Services in the Eastern Cape Province
- Authors: Gedu, Grace Nontuthuzelo
- Date: 2011-12
- Subjects: Rural health services , AIDS (Disease)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24610 , vital:63213
- Description: This study was conducted at the Libode District Health Services amongst professional nurses who render services to HIV and AIDS patients. Generally, caring for HIV positive patients, nurses need to be knowledgeable about the transmission of the HIV virus, in order to render quality care to the patients. They also need to be sensitive and to demonstrate positive attitudes towards the patients. It was unknown whether the professional nurses at the Libode District Health Services are knowledgeable or not regarding HIV and AIDS. Their attitudes towards the HIV positive patients, were also unknown. Not knowing the knowledge and attitude of professional nurses regarding HIV and AIDS has the potential to compromise the quality of nursing care rendered to the patients. The purpose of the study was to explore and describe the level of knowledge of professional nurses regarding HIV and AIDS well as their attitudes towards the HIV-positive patients so as to make recommendations for quality patient care based on the results. A quantitative explorative descriptive research design was used to examine the level of knowledge about HIV and AIDS as well as the attitudes of professional nurses to HIV and AIDS patients. The target populations were the 218 professional nurses working at the Libode District Health services who had nursed HIV positive patients. A simple random sampling method was used to select a sample of 120 participants. A structured self-administered questionnaire was used to obtain data. The questionnaire consisted of a section on the demographic profile of the participants, and two other sections for responses on knowledge and attitudes. Data were analyzed using Statistical Package for the Social Sciences (SPSS) version 17.0 software for consistency of the twenty (20) items in the questionnaire. Findings showed that nurses of Libode District Health Services had an approximately fair amount of knowledge. The majority (79percent) of participants scored above the cut-off point of 24. Twenty one percent (21percent) scored below 24. On attitude, the majority (76percent) had scored below the cut-off point of 36. Recommendations were that professional nurses of Libode District Health Services, need to be exposed to ongoing training on HIV and AIDS to increase their knowledge about HIV and AIDS and to ensure that they demonstrate positive attitudes towards HIV and AIDS patients. , Thesis (MSc) -- Faculty of Science and Agriculture, 2011
- Full Text:
- Authors: Gedu, Grace Nontuthuzelo
- Date: 2011-12
- Subjects: Rural health services , AIDS (Disease)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24610 , vital:63213
- Description: This study was conducted at the Libode District Health Services amongst professional nurses who render services to HIV and AIDS patients. Generally, caring for HIV positive patients, nurses need to be knowledgeable about the transmission of the HIV virus, in order to render quality care to the patients. They also need to be sensitive and to demonstrate positive attitudes towards the patients. It was unknown whether the professional nurses at the Libode District Health Services are knowledgeable or not regarding HIV and AIDS. Their attitudes towards the HIV positive patients, were also unknown. Not knowing the knowledge and attitude of professional nurses regarding HIV and AIDS has the potential to compromise the quality of nursing care rendered to the patients. The purpose of the study was to explore and describe the level of knowledge of professional nurses regarding HIV and AIDS well as their attitudes towards the HIV-positive patients so as to make recommendations for quality patient care based on the results. A quantitative explorative descriptive research design was used to examine the level of knowledge about HIV and AIDS as well as the attitudes of professional nurses to HIV and AIDS patients. The target populations were the 218 professional nurses working at the Libode District Health services who had nursed HIV positive patients. A simple random sampling method was used to select a sample of 120 participants. A structured self-administered questionnaire was used to obtain data. The questionnaire consisted of a section on the demographic profile of the participants, and two other sections for responses on knowledge and attitudes. Data were analyzed using Statistical Package for the Social Sciences (SPSS) version 17.0 software for consistency of the twenty (20) items in the questionnaire. Findings showed that nurses of Libode District Health Services had an approximately fair amount of knowledge. The majority (79percent) of participants scored above the cut-off point of 24. Twenty one percent (21percent) scored below 24. On attitude, the majority (76percent) had scored below the cut-off point of 36. Recommendations were that professional nurses of Libode District Health Services, need to be exposed to ongoing training on HIV and AIDS to increase their knowledge about HIV and AIDS and to ensure that they demonstrate positive attitudes towards HIV and AIDS patients. , Thesis (MSc) -- Faculty of Science and Agriculture, 2011
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An assessment of the sustainability of the selected NGOs' interventions on poverty alleviation: the case of Mafeteng and Leribe Districts
- Authors: Ntobo-Letsie, Hlompho
- Date: 2011-11
- Subjects: Non-governmental organizations -- Lesotho , Poverty -- Lesotho
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25777 , vital:64478
- Description: The escalating levels of poverty present a serious challenge of vulnerability to most citizens of Lesotho. The government of Lesotho and its Non-Governmental Organisation (NGO) partners have been engaged in several programs aimed at alleviating poverty, whose persistence has threatened the current and future generations of the country. This study aimed at assessing the sustainability of NGO`s poverty alleviation programmes established for selected beneficiaries in rural communities. The main participants in this study were beneficiaries of poverty alleviation projects, government officials and NGO project managers. Using a combination of empowerment, sustainable livelihood approach and the sustainable development theoretical frameworks, the study adopted the qualitative research methodology to investigate the pertinent issues. The research design was a case study which helped to direct the researcher in the process of collecting and analyzing data. The study revealed that the sustainability of these projects in poverty alleviation remains questionable due to a number of challenges. These challenges include; lack of participation of the beneficiaries, inadequate funding, natural disasters, lack of commitment of the beneficiaries and lack of government support to the project beneficiaries. Nevertheless, there are commendable efforts made by the NGOs involved to enhance the sustainability of these projects and these include; training the beneficiaries in crop production, marketing, natural resources management and disaster management. In light of the challenges faced by NGOs and participants in alleviating poverty, this study advocates, The three stakeholders are expected to work harmoniously together using communication channels that are open to all of them. That enables them to work with a singleness of purpose to attain the sustainability goals of the project. There is need also for NGOs to reconsider their targeting schemes, and to advance their training, monitoring and evaluation skills of their projects. It also recommended that the beneficiaries must be empowered in order for the sustainability of the projects to be realized. , Thesis (MSoc) -- Faculty of Management and Commerce, 2011
- Full Text:
- Authors: Ntobo-Letsie, Hlompho
- Date: 2011-11
- Subjects: Non-governmental organizations -- Lesotho , Poverty -- Lesotho
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25777 , vital:64478
- Description: The escalating levels of poverty present a serious challenge of vulnerability to most citizens of Lesotho. The government of Lesotho and its Non-Governmental Organisation (NGO) partners have been engaged in several programs aimed at alleviating poverty, whose persistence has threatened the current and future generations of the country. This study aimed at assessing the sustainability of NGO`s poverty alleviation programmes established for selected beneficiaries in rural communities. The main participants in this study were beneficiaries of poverty alleviation projects, government officials and NGO project managers. Using a combination of empowerment, sustainable livelihood approach and the sustainable development theoretical frameworks, the study adopted the qualitative research methodology to investigate the pertinent issues. The research design was a case study which helped to direct the researcher in the process of collecting and analyzing data. The study revealed that the sustainability of these projects in poverty alleviation remains questionable due to a number of challenges. These challenges include; lack of participation of the beneficiaries, inadequate funding, natural disasters, lack of commitment of the beneficiaries and lack of government support to the project beneficiaries. Nevertheless, there are commendable efforts made by the NGOs involved to enhance the sustainability of these projects and these include; training the beneficiaries in crop production, marketing, natural resources management and disaster management. In light of the challenges faced by NGOs and participants in alleviating poverty, this study advocates, The three stakeholders are expected to work harmoniously together using communication channels that are open to all of them. That enables them to work with a singleness of purpose to attain the sustainability goals of the project. There is need also for NGOs to reconsider their targeting schemes, and to advance their training, monitoring and evaluation skills of their projects. It also recommended that the beneficiaries must be empowered in order for the sustainability of the projects to be realized. , Thesis (MSoc) -- Faculty of Management and Commerce, 2011
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An evaluation of stress tolerant open pollinated maize varieties in selected environments of the Eastern Cape Province, South Africa
- Chimonyo, Vimbayi G P https://orcid.org/0000-0001-9912-9848
- Authors: Chimonyo, Vimbayi G P https://orcid.org/0000-0001-9912-9848
- Date: 2011-11
- Subjects: Crops -- Effect of stress on
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24487 , vital:63045
- Description: The use of farmer acceptable, stress tolerant open pollinated maize varieties (OPVs) could be a strategy to help increase maize productivity for resource-poor farmers in the Eastern Cape (EC) Province. The current study investigated the following: a) participatory selection of newly introduced stress tolerant maize OPVs; b) characteristics of maize producing farmers, their production constraints and criteria for variety selections; c) multi-environment yield trials in which genotype and environment interactions (GEI) were investigated, and d) morphological diversity of newly introduced maize varieties. Nine newly introduced maize OPVs were evaluated in this study. These varieties were: ZM 305, ZM 423 ZM 501, ZM 525, Obatanpa, ZM 621, ZM 627, which were from the International Maize and Wheat Improvement Centre (CIMMYT), BR 993, and Comp 4 which from where the International Institute of Tropical Agriculture (IITA). Check varieties, Pan 6479 (a hybrid) and three locally grown OPVs (Okavango, Afric 1 and Nelson‘s Choice) were also included. Participatory variety selection (PVS) was conducted during the 2009/10 summer season to evaluate farmer acceptance of these newly introduced OPVs. The most preferred varieties farmers were Okavango, ZM 305 and ZM 501, and these varieties were not significantly different from the highest yielding variety within each site. Therefore, varieties like ZM 305 and ZM 501 could easily be adopted by farmers, and their use could result in yield improvements. To gather information on farmer characteristics, and perceptions on maize production constraints and maize selection criteria, focus group discussions and household surveys were conducted during the 2009/2010 and 2010/2011 seasons, respectively. Results indicated that, elderly farmers dominated the farming communities. Maize production was generally low, with 98percent of the farmers obtaining less than 1.6 t/ha. The most important constraints affecting maize production were extreme weather events (floods and drought), pests and diseases, and poor access to credit. The most preferred traits that made up farmer selection criteria were ear traits such as taste, long cobs, and big kernels. Other traits, such as, prolificacy, early maturity, retainability of seed and dark leaves, were village specific. Yield trials, assessing genotype and environment interactions, were conducted in eight sites during the 2009/10 and 2010/11 seasons. The genotypes exhibited non-significant crossover and non-crossover GEI over the environments. Okavango, the most stable variety, was generally low yielding (4.28 t/ha) than other stable varieties such as ZM 305, ZM 501, ZM 621 and ZM 423. The later varieties had significantly (p<0.05) higher yields of between 4.46 t/ha and 4.97 t/ha. The highest yielding varieties, Pan 6479 (5.29 t/ha) and ZM 525 (4.87 t/ha), showed specific adaptations to high potential environments, while BR 993 (4.07 t/ha) and Afric 1 (4.24 t/ha) were low yielding, unstable and specifically adapted to low potential environments. New varieties, therefore, exhibited both specific and wide adaptation. Qualitative and quantitative traits were evaluated to establish the morphological diversity of the 13 varieties. Ear height, plant height, days to 50percent anthesis and grain yield contributed the most to variety diversity. Cluster Analysis discriminated varieties into four main clusters. The first cluster consisted of four CIMMYT varieties that were short in height and early maturing (ZM 305, ZM 423, ZM 501 and ZM 525), while hybrid Pan 6479 was placed into cluster two. Nelson‘s Choice and Okavango were grouped into the third cluster, while tall and late maturing varieties, ZM 621, ZM 627, Obatanpa, BR 993, Comp 4 and Afric 1, were placed in the fourth cluster. The segregation of the newly introduced varieties into two distinct groups shows that these varieties can be recommended into more than on cropping system and agro-ecology. Differences in village agro-ecologies resulted in farmers selecting varieties differently. This diversity in agro-ecology also brought about variations on farmer perceptions in selection criteria and production constraints. Most of the new varieties were observed to be superior in yield performance when compared to local check OPVs, exhibiting either wide or specific adaptation. The study also demonstrated that, the study of morphological diversity can be used to suggest varieties to different environmental potentials and cropping systems. Multi-evaluation trials were able to give an insight on variety preferences and performance. These new varieties should, therefore, be introduced to selected farmers living in their respective environments on the basis of results obtained. However, varieties still need to be evaluated under farmer-managed conditions to determine whether they actually bring about yield improvement when compared with current varieties being used. , Thesis (MSc) -- Faculty of Science and Agriculture, 2011
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- Authors: Chimonyo, Vimbayi G P https://orcid.org/0000-0001-9912-9848
- Date: 2011-11
- Subjects: Crops -- Effect of stress on
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24487 , vital:63045
- Description: The use of farmer acceptable, stress tolerant open pollinated maize varieties (OPVs) could be a strategy to help increase maize productivity for resource-poor farmers in the Eastern Cape (EC) Province. The current study investigated the following: a) participatory selection of newly introduced stress tolerant maize OPVs; b) characteristics of maize producing farmers, their production constraints and criteria for variety selections; c) multi-environment yield trials in which genotype and environment interactions (GEI) were investigated, and d) morphological diversity of newly introduced maize varieties. Nine newly introduced maize OPVs were evaluated in this study. These varieties were: ZM 305, ZM 423 ZM 501, ZM 525, Obatanpa, ZM 621, ZM 627, which were from the International Maize and Wheat Improvement Centre (CIMMYT), BR 993, and Comp 4 which from where the International Institute of Tropical Agriculture (IITA). Check varieties, Pan 6479 (a hybrid) and three locally grown OPVs (Okavango, Afric 1 and Nelson‘s Choice) were also included. Participatory variety selection (PVS) was conducted during the 2009/10 summer season to evaluate farmer acceptance of these newly introduced OPVs. The most preferred varieties farmers were Okavango, ZM 305 and ZM 501, and these varieties were not significantly different from the highest yielding variety within each site. Therefore, varieties like ZM 305 and ZM 501 could easily be adopted by farmers, and their use could result in yield improvements. To gather information on farmer characteristics, and perceptions on maize production constraints and maize selection criteria, focus group discussions and household surveys were conducted during the 2009/2010 and 2010/2011 seasons, respectively. Results indicated that, elderly farmers dominated the farming communities. Maize production was generally low, with 98percent of the farmers obtaining less than 1.6 t/ha. The most important constraints affecting maize production were extreme weather events (floods and drought), pests and diseases, and poor access to credit. The most preferred traits that made up farmer selection criteria were ear traits such as taste, long cobs, and big kernels. Other traits, such as, prolificacy, early maturity, retainability of seed and dark leaves, were village specific. Yield trials, assessing genotype and environment interactions, were conducted in eight sites during the 2009/10 and 2010/11 seasons. The genotypes exhibited non-significant crossover and non-crossover GEI over the environments. Okavango, the most stable variety, was generally low yielding (4.28 t/ha) than other stable varieties such as ZM 305, ZM 501, ZM 621 and ZM 423. The later varieties had significantly (p<0.05) higher yields of between 4.46 t/ha and 4.97 t/ha. The highest yielding varieties, Pan 6479 (5.29 t/ha) and ZM 525 (4.87 t/ha), showed specific adaptations to high potential environments, while BR 993 (4.07 t/ha) and Afric 1 (4.24 t/ha) were low yielding, unstable and specifically adapted to low potential environments. New varieties, therefore, exhibited both specific and wide adaptation. Qualitative and quantitative traits were evaluated to establish the morphological diversity of the 13 varieties. Ear height, plant height, days to 50percent anthesis and grain yield contributed the most to variety diversity. Cluster Analysis discriminated varieties into four main clusters. The first cluster consisted of four CIMMYT varieties that were short in height and early maturing (ZM 305, ZM 423, ZM 501 and ZM 525), while hybrid Pan 6479 was placed into cluster two. Nelson‘s Choice and Okavango were grouped into the third cluster, while tall and late maturing varieties, ZM 621, ZM 627, Obatanpa, BR 993, Comp 4 and Afric 1, were placed in the fourth cluster. The segregation of the newly introduced varieties into two distinct groups shows that these varieties can be recommended into more than on cropping system and agro-ecology. Differences in village agro-ecologies resulted in farmers selecting varieties differently. This diversity in agro-ecology also brought about variations on farmer perceptions in selection criteria and production constraints. Most of the new varieties were observed to be superior in yield performance when compared to local check OPVs, exhibiting either wide or specific adaptation. The study also demonstrated that, the study of morphological diversity can be used to suggest varieties to different environmental potentials and cropping systems. Multi-evaluation trials were able to give an insight on variety preferences and performance. These new varieties should, therefore, be introduced to selected farmers living in their respective environments on the basis of results obtained. However, varieties still need to be evaluated under farmer-managed conditions to determine whether they actually bring about yield improvement when compared with current varieties being used. , Thesis (MSc) -- Faculty of Science and Agriculture, 2011
- Full Text:
Employer and employee perceptions on the implementation of health and safety regulations at a selected mine
- Hlatywayo, Clifford Kendrick https://orcid.org/0000-0003-1776-9812
- Authors: Hlatywayo, Clifford Kendrick https://orcid.org/0000-0003-1776-9812
- Date: 2011-11
- Subjects: Platinum mines and mining -- South Africa , Industrial safety -- South Africa -- Management , Mine safety -- South Africa -- Measurement
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29204 , vital:77607
- Description: South Africa is the largest producer of platinum. Safety in mines has and is always a concern; no matter how much is being done incidents still occur. The ability to improve the health and safety regulations is dependent on safety culture, or the norms surrounding reactions following an error, the learning that takes place, and the proactive strategies in place to prevent future errors. Effective implementation of health and safety regulations requires an environment in which employees are empowered to make decisions about their conditions of work. Very little literature, if any, could be found on the subject particularly as it applies in platinum mining. In the light of this research, do incidents occur because health and safety regulations are not being implemented effectively or are they due to employee negligence? South African unions propose that the government should enact new health and safety regulations to compel mining companies to uphold higher safety standards and prevent avoidable mine accidents and deaths. Is this to say that current legislations is ineffective or that there are loopholes that must be closed. Is this a case in which employees are not well informed or are employers simply not abiding by health and safety regulations or are the health and safety regulations ineffective. The following study looked into the perception of employers and employees on the implementation of health and safety regulations at a selected platinum mine in Mpumalanga. Two instruments were distributed to the respondents. There were 153 questionnaires returned for employees as well as 22 for employers. Random sampling was utilised. The data was subjected to a number of statistical analyses including T-tests, and analysis of variance on the difference in perception of the groups under study. Findings from the research indicated that even though employers and employees have a positive perception on implementation of health and safety regulations, there is still a mismatch between implementation and execution of the policies. Consequently, many suggestions are not always turned into actual action to maintain the safety and health of employees. , Thesis (MCom) -- Faculty of Management and Commerce , 2011
- Full Text:
- Authors: Hlatywayo, Clifford Kendrick https://orcid.org/0000-0003-1776-9812
- Date: 2011-11
- Subjects: Platinum mines and mining -- South Africa , Industrial safety -- South Africa -- Management , Mine safety -- South Africa -- Measurement
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29204 , vital:77607
- Description: South Africa is the largest producer of platinum. Safety in mines has and is always a concern; no matter how much is being done incidents still occur. The ability to improve the health and safety regulations is dependent on safety culture, or the norms surrounding reactions following an error, the learning that takes place, and the proactive strategies in place to prevent future errors. Effective implementation of health and safety regulations requires an environment in which employees are empowered to make decisions about their conditions of work. Very little literature, if any, could be found on the subject particularly as it applies in platinum mining. In the light of this research, do incidents occur because health and safety regulations are not being implemented effectively or are they due to employee negligence? South African unions propose that the government should enact new health and safety regulations to compel mining companies to uphold higher safety standards and prevent avoidable mine accidents and deaths. Is this to say that current legislations is ineffective or that there are loopholes that must be closed. Is this a case in which employees are not well informed or are employers simply not abiding by health and safety regulations or are the health and safety regulations ineffective. The following study looked into the perception of employers and employees on the implementation of health and safety regulations at a selected platinum mine in Mpumalanga. Two instruments were distributed to the respondents. There were 153 questionnaires returned for employees as well as 22 for employers. Random sampling was utilised. The data was subjected to a number of statistical analyses including T-tests, and analysis of variance on the difference in perception of the groups under study. Findings from the research indicated that even though employers and employees have a positive perception on implementation of health and safety regulations, there is still a mismatch between implementation and execution of the policies. Consequently, many suggestions are not always turned into actual action to maintain the safety and health of employees. , Thesis (MCom) -- Faculty of Management and Commerce , 2011
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Evaluation of the impact of alcohol advertising and consumption on adolescents in selected high schools in the Eastern Cape South Africa
- Moyo, Lungisani https://orcid.org/0000-0001-6472-6570
- Authors: Moyo, Lungisani https://orcid.org/0000-0001-6472-6570
- Date: 2011-11
- Subjects: Youth -- Alcohol use -- South Africa , High schools -- South Africa -- Eastern Cape , Alcoholism -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29300 , vital:77925
- Description: Alcohol consumption by adolescents has become a major problem in many countries and South Africa has not been excluded. In most cases, people think it is due to the way alcohol is being advertised. This study therefore seeks to evaluate the impacts of alcohol advertising and consumption on the youth (adolescence). Specifically, the study investigates the impacts of alcohol advertising and consumption on adolescence, focusing on three High Schools namely Nzululwazi High school in Alice, Hector Peterson High school in King William‟s town and Philemon Ngcelwane High school in East London, all in the Eastern Cape Province, South Africa. This study builds on three theories namely the Cognitive Dissonance theory, Theory of Planned Behaviour/ Reasoned Action and the Uses and Gratification theory. This study used qualitative approach because of its ability to offer richly descriptive report of individuals‟ perception, attitudes, beliefs, views and feelings towards their exposure to alcohol advertisements. Quantitative approach was also used for the statistical interpretations and also for the sake of triangulation and for obtaining more valid data. Questionnaires and focus group discussions were the techniques adopted by the researcher. Results of this study revealed that most adolescence who end up consuming alcohol have been mostly exposed to alcohol advertising, although there are other contributing factors such as, the influence of friends, peer pressure and family problems. It was also revealed in this study that alcohol advertising makes adolescence aware of different brands and slogans, for example Hansa, „kiss of the saaz hop‟, Savanna, „if you hammer it, I will play it‟ and Hunters Dry, „it‟s dry but you can drink it‟ .This information ultimately makes students feel connected to alcohol advertising, thereby leading them to consuming alcohol. The recommendations are made with regards to the provision of laws that limit alcohol advertising and strict regulation of alcohol advertising, with removal of content and format geared towards underage audiences, minority groups and the poor among others. , Thesis (M.Soc.Sc) -- Faculty of Social Sciences and Humanities, 2011
- Full Text:
- Authors: Moyo, Lungisani https://orcid.org/0000-0001-6472-6570
- Date: 2011-11
- Subjects: Youth -- Alcohol use -- South Africa , High schools -- South Africa -- Eastern Cape , Alcoholism -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29300 , vital:77925
- Description: Alcohol consumption by adolescents has become a major problem in many countries and South Africa has not been excluded. In most cases, people think it is due to the way alcohol is being advertised. This study therefore seeks to evaluate the impacts of alcohol advertising and consumption on the youth (adolescence). Specifically, the study investigates the impacts of alcohol advertising and consumption on adolescence, focusing on three High Schools namely Nzululwazi High school in Alice, Hector Peterson High school in King William‟s town and Philemon Ngcelwane High school in East London, all in the Eastern Cape Province, South Africa. This study builds on three theories namely the Cognitive Dissonance theory, Theory of Planned Behaviour/ Reasoned Action and the Uses and Gratification theory. This study used qualitative approach because of its ability to offer richly descriptive report of individuals‟ perception, attitudes, beliefs, views and feelings towards their exposure to alcohol advertisements. Quantitative approach was also used for the statistical interpretations and also for the sake of triangulation and for obtaining more valid data. Questionnaires and focus group discussions were the techniques adopted by the researcher. Results of this study revealed that most adolescence who end up consuming alcohol have been mostly exposed to alcohol advertising, although there are other contributing factors such as, the influence of friends, peer pressure and family problems. It was also revealed in this study that alcohol advertising makes adolescence aware of different brands and slogans, for example Hansa, „kiss of the saaz hop‟, Savanna, „if you hammer it, I will play it‟ and Hunters Dry, „it‟s dry but you can drink it‟ .This information ultimately makes students feel connected to alcohol advertising, thereby leading them to consuming alcohol. The recommendations are made with regards to the provision of laws that limit alcohol advertising and strict regulation of alcohol advertising, with removal of content and format geared towards underage audiences, minority groups and the poor among others. , Thesis (M.Soc.Sc) -- Faculty of Social Sciences and Humanities, 2011
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Negotiating identity in an online virtual environment
- Authors: Dube, Nompumelelo
- Date: 2011-11
- Subjects: Online Identities , Internet , Personal Information Managenment
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23883 , vital:61284
- Description: This study investigates ways in which people in an online anonymous virtual environment use language to negotiate and manage their identities. The study is informed by the tenets of social constructionism, a theory that explores the problematic manner in which the self is taken for granted as unchanging (Burr, 1998). One point made by alternative theorists other than social constructionist theorists is the notion of the “essential self”; one tenet of social constructionist theory suggests that the “essential self” of a person remains fluid. The implication is that one ultimately changes as each day passes, for example at the core of one’s personality is an “essential self” that changes with experiences, conflicts and/or age (Tuffin, 2005). From a social constructionist perspective, the self is more fractured and contingent on life’s circumstances. This theory was found to be an appropriate paradigm from which to study anonymous online identities, where individuals were found to create and negotiate certain identities outside of those identities that people often find important to portray to outsiders in the general public. Sixty-seven (67) students from different races participated in this study and online discussions from a course discussion forum, “blackboard”, were monitored. This study found that one’s identity is negotiated in an anonymous virtual environment. Data was collected from these discussions and was analysed using Potter and Wetherell’s (1987) method of discourse analysis. Research findings ultimately found that people use discursive strategies in negotiating and maintaining their identity online, but that distinct racial characteristics were noticeable despite some attempts to mask one’s background. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2011
- Full Text:
- Authors: Dube, Nompumelelo
- Date: 2011-11
- Subjects: Online Identities , Internet , Personal Information Managenment
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23883 , vital:61284
- Description: This study investigates ways in which people in an online anonymous virtual environment use language to negotiate and manage their identities. The study is informed by the tenets of social constructionism, a theory that explores the problematic manner in which the self is taken for granted as unchanging (Burr, 1998). One point made by alternative theorists other than social constructionist theorists is the notion of the “essential self”; one tenet of social constructionist theory suggests that the “essential self” of a person remains fluid. The implication is that one ultimately changes as each day passes, for example at the core of one’s personality is an “essential self” that changes with experiences, conflicts and/or age (Tuffin, 2005). From a social constructionist perspective, the self is more fractured and contingent on life’s circumstances. This theory was found to be an appropriate paradigm from which to study anonymous online identities, where individuals were found to create and negotiate certain identities outside of those identities that people often find important to portray to outsiders in the general public. Sixty-seven (67) students from different races participated in this study and online discussions from a course discussion forum, “blackboard”, were monitored. This study found that one’s identity is negotiated in an anonymous virtual environment. Data was collected from these discussions and was analysed using Potter and Wetherell’s (1987) method of discourse analysis. Research findings ultimately found that people use discursive strategies in negotiating and maintaining their identity online, but that distinct racial characteristics were noticeable despite some attempts to mask one’s background. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2011
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Perceptions of homosexual Xhosa men of ulwaluko (traditional circumcision)
- Ntozini, Anathi (https://orcid.org/0000-0002-4471-7383)
- Authors: Ntozini, Anathi (https://orcid.org/0000-0002-4471-7383)
- Date: 2011-11
- Subjects: Homosexuality , Initiation Rites , Social Life and Customs
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23894 , vital:61292
- Description: The study investigated perceptions of homosexual Xhosa traditionally circumcised men with regards to ulwaluko (Xhosa initiation into manhood). The study employed snowball sampling as a method of data collection. As a result of the assumption that ulwaluko is a terrain of masculinity, initiates were expected to exemplify traditional notions of masculinity. The study found that reasons for going to initiation school differed. Respondents wanted to validate their manhood while some felt forced to undergo the ritual. Dominant family values also played a role in respondent’s decision to undergo initiation. Respondents reported that community members and family members had hoped that ulwaluko would reform or convert those who were homosexual. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2011
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- Authors: Ntozini, Anathi (https://orcid.org/0000-0002-4471-7383)
- Date: 2011-11
- Subjects: Homosexuality , Initiation Rites , Social Life and Customs
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23894 , vital:61292
- Description: The study investigated perceptions of homosexual Xhosa traditionally circumcised men with regards to ulwaluko (Xhosa initiation into manhood). The study employed snowball sampling as a method of data collection. As a result of the assumption that ulwaluko is a terrain of masculinity, initiates were expected to exemplify traditional notions of masculinity. The study found that reasons for going to initiation school differed. Respondents wanted to validate their manhood while some felt forced to undergo the ritual. Dominant family values also played a role in respondent’s decision to undergo initiation. Respondents reported that community members and family members had hoped that ulwaluko would reform or convert those who were homosexual. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2011
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The string vibrator experiment-experimental and analytical determination of system fundamental natural frequencies
- Authors: Gordon, Mark Leonard
- Date: 2011-11
- Subjects: Vibration , Nonlinear oscillations , Waves
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24002 , vital:62245
- Description: This thesis represents an experimental and intellectual journey of more than three years. The String Vibrator Experiment (SVE) is an experimental payload on the SumbandilaSat, satellite. The experiment was initially designed to compare low-earthorbitstretched string nonlinear dynamics with those found terrestrially, with particular emphasis on the effects of micro-gravity and near vacuum. Due to the damage of some internal components of the SVE, the terrestrial experiment had to be characterized by finding both transverse fundamental natural frequencies and the longitudinal system fundamental natural frequency. Forced and free vibration tests were performed on the SVE, with comparable results. The percentage frequency difference between measurement results obtained for the said natural frequencies was found to be acceptable. An analytical model for the string longitudinal system was developed using Energy Methods, assuming linear coupling of the stretched string and the flexible support. Bessel Functions were used to find the natural frequency of the flexible support, which is made of a thin-circular plate loaded centrally by the stretched string and fixed on its outer boundary. The natural frequency thus predicted, corresponds closely with that measured by Laser Doppler Vibrometry. It was found that the longitudinal system behaves in an uncoupled, manner. In this study use was made of piezo bi-morph sensors as vibration measuring devices, with promising results. A method called the peak amplitude discrimination method is introduced to find the respective resonant frequencies; this method is an adaptation of the sweptsine frequency method Nonlinear behavior of the SVE was found to exist exhibiting Sub-harmonics, Super-harmonics, Combination harmonics and Internal Resonances. It is hoped that the experimental methods used in this study would aid in the measurement and analysis of longitudinal vibrations found in flexible cables, rods and rigid bars. , Thesis (PhD) -- Faculty of Science and Agriculture, 2011
- Full Text:
- Authors: Gordon, Mark Leonard
- Date: 2011-11
- Subjects: Vibration , Nonlinear oscillations , Waves
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24002 , vital:62245
- Description: This thesis represents an experimental and intellectual journey of more than three years. The String Vibrator Experiment (SVE) is an experimental payload on the SumbandilaSat, satellite. The experiment was initially designed to compare low-earthorbitstretched string nonlinear dynamics with those found terrestrially, with particular emphasis on the effects of micro-gravity and near vacuum. Due to the damage of some internal components of the SVE, the terrestrial experiment had to be characterized by finding both transverse fundamental natural frequencies and the longitudinal system fundamental natural frequency. Forced and free vibration tests were performed on the SVE, with comparable results. The percentage frequency difference between measurement results obtained for the said natural frequencies was found to be acceptable. An analytical model for the string longitudinal system was developed using Energy Methods, assuming linear coupling of the stretched string and the flexible support. Bessel Functions were used to find the natural frequency of the flexible support, which is made of a thin-circular plate loaded centrally by the stretched string and fixed on its outer boundary. The natural frequency thus predicted, corresponds closely with that measured by Laser Doppler Vibrometry. It was found that the longitudinal system behaves in an uncoupled, manner. In this study use was made of piezo bi-morph sensors as vibration measuring devices, with promising results. A method called the peak amplitude discrimination method is introduced to find the respective resonant frequencies; this method is an adaptation of the sweptsine frequency method Nonlinear behavior of the SVE was found to exist exhibiting Sub-harmonics, Super-harmonics, Combination harmonics and Internal Resonances. It is hoped that the experimental methods used in this study would aid in the measurement and analysis of longitudinal vibrations found in flexible cables, rods and rigid bars. , Thesis (PhD) -- Faculty of Science and Agriculture, 2011
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Evaluating the implementation of performance management systems at Lilongwe Technical College in Malawi
- Authors: Ngondo, Lydia Temwa Bester
- Date: 2011-10
- Subjects: Performance -- Management , Performance standards , Employees -- Rating of
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26335 , vital:65239
- Description: The study was set out to examine the implementation of Performance Management System at Lilongwe Technical College in Malawi. The reason for pursuing the study is to contribute to the improvement and strengthening of the implementation of the Performance Management System which is already in place at the college. The objectives of the study were to assess the attitudes and perceptions of employers regarding the implementation of the PMS at Lilongwe Technical College; to establish the challenges inhibiting successful implementation; and to provide possible mechanisms to improve the situation. The research methodology used was a qualitative research approach, based on in-depth interviews, observation and secondary resources that is reviewing the necessary information available in connection with the topic. After analyzing the relevant information, it became apparent that the performance management system is lacking understanding of the policy, procedures and processes, senior management does not seem to be committed to the successful implementation of the PMS and also lack of motivation and advocacy from top management. The researcher has given recommendations in chapter 5 so that it would contribute to more efficient and effective implementation of the Performance Management System at Lilongwe Technical College. , Thesis (MA) -- Faculty of Management and Commerce, 2011
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- Authors: Ngondo, Lydia Temwa Bester
- Date: 2011-10
- Subjects: Performance -- Management , Performance standards , Employees -- Rating of
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26335 , vital:65239
- Description: The study was set out to examine the implementation of Performance Management System at Lilongwe Technical College in Malawi. The reason for pursuing the study is to contribute to the improvement and strengthening of the implementation of the Performance Management System which is already in place at the college. The objectives of the study were to assess the attitudes and perceptions of employers regarding the implementation of the PMS at Lilongwe Technical College; to establish the challenges inhibiting successful implementation; and to provide possible mechanisms to improve the situation. The research methodology used was a qualitative research approach, based on in-depth interviews, observation and secondary resources that is reviewing the necessary information available in connection with the topic. After analyzing the relevant information, it became apparent that the performance management system is lacking understanding of the policy, procedures and processes, senior management does not seem to be committed to the successful implementation of the PMS and also lack of motivation and advocacy from top management. The researcher has given recommendations in chapter 5 so that it would contribute to more efficient and effective implementation of the Performance Management System at Lilongwe Technical College. , Thesis (MA) -- Faculty of Management and Commerce, 2011
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Perceptions of South African teenagers on HIV counselling and testing (HCT) at an Eastern Cape School
- Authors: Fray, Veronica
- Date: 2011-10
- Subjects: Teenagers , Sexual Ethics , Diseases
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24091 , vital:62344
- Description: HIV counselling and testing has long been identified and used as an important entry point around the world in trying to minimise the impact of HIV, particularly on vulnerable populations. South Africa is one of the countries in the world most affected by HIV, and despite concerted governmental efforts to try to contain the disease since the 1990‟s; it remains a threat to the South African population today. Teenagers are a particularly vulnerable group, as they have been found to often engage in behaviours without apparent regard for the consequences of such actions. With the government’s recent upscale of HIV counselling and testing, through its largest national HCT campaign which includes school learners, this study aimed at establishing the perceptions of high school learners through a KABP survey. The study found that while learners may have the necessary knowledge of HIV/ADS, this did not necessarily determine their sexual behaviour or attitudes. Variations were also found in terms of their developmental needs, with possible implications for testing campaigns. Finally, a lack of trust that confidentiality would be maintained may seriously limit uptake of such a service at schools. , Thesis (MA) -- Faculty Social Sciences and Humanities, 2011
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- Authors: Fray, Veronica
- Date: 2011-10
- Subjects: Teenagers , Sexual Ethics , Diseases
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24091 , vital:62344
- Description: HIV counselling and testing has long been identified and used as an important entry point around the world in trying to minimise the impact of HIV, particularly on vulnerable populations. South Africa is one of the countries in the world most affected by HIV, and despite concerted governmental efforts to try to contain the disease since the 1990‟s; it remains a threat to the South African population today. Teenagers are a particularly vulnerable group, as they have been found to often engage in behaviours without apparent regard for the consequences of such actions. With the government’s recent upscale of HIV counselling and testing, through its largest national HCT campaign which includes school learners, this study aimed at establishing the perceptions of high school learners through a KABP survey. The study found that while learners may have the necessary knowledge of HIV/ADS, this did not necessarily determine their sexual behaviour or attitudes. Variations were also found in terms of their developmental needs, with possible implications for testing campaigns. Finally, a lack of trust that confidentiality would be maintained may seriously limit uptake of such a service at schools. , Thesis (MA) -- Faculty Social Sciences and Humanities, 2011
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The determinants of demand for public transport in South Africa
- Seleseng, Tshegofatso Priscilla
- Authors: Seleseng, Tshegofatso Priscilla
- Date: 2011-10
- Subjects: Transportation--South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24565 , vital:63176
- Description: This study analyses the determinants of demand for public transport in South Africa, using quarterly data covering the period from 1990-2009. The study initially provides an overview of the South African public transport system and population trends. Based on the review of the theoretical and empirical literature on transport, the study specifies a model of public transport demand in South Africa. Tests for stationarity and unit roots in the series (both informal and formal tests), and co-integration test have been performed. The co-integration test is done using the Johansen (1990, 1995) methodology. A vector error correction model is run to provide robust determinant variables on public transport. The results revealed that in the short run, the demand for public transport depends positively and significantly on GDP per capita growth and negatively on prices for public transport and fuel prices. However, over the long run, the demand for public transport depends negatively on GDP per capita growth as expected, but positively on the other variables including the growth in employment levels. To check for robustness of the VECM results the diagnostic tests were performed. The AR Roots Graph reports the inverse roots of the characteristics AR polynomial. The graph showed that all roots lie inside the unit circle which is an indication that VAR is stable. Some of the results found in this the study, such as the short run and long run impact of income growth on public demand, are supported by findings from other studies. , Thesis (MCom) -- Faculty of Management and Commerce, 2011
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- Authors: Seleseng, Tshegofatso Priscilla
- Date: 2011-10
- Subjects: Transportation--South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24565 , vital:63176
- Description: This study analyses the determinants of demand for public transport in South Africa, using quarterly data covering the period from 1990-2009. The study initially provides an overview of the South African public transport system and population trends. Based on the review of the theoretical and empirical literature on transport, the study specifies a model of public transport demand in South Africa. Tests for stationarity and unit roots in the series (both informal and formal tests), and co-integration test have been performed. The co-integration test is done using the Johansen (1990, 1995) methodology. A vector error correction model is run to provide robust determinant variables on public transport. The results revealed that in the short run, the demand for public transport depends positively and significantly on GDP per capita growth and negatively on prices for public transport and fuel prices. However, over the long run, the demand for public transport depends negatively on GDP per capita growth as expected, but positively on the other variables including the growth in employment levels. To check for robustness of the VECM results the diagnostic tests were performed. The AR Roots Graph reports the inverse roots of the characteristics AR polynomial. The graph showed that all roots lie inside the unit circle which is an indication that VAR is stable. Some of the results found in this the study, such as the short run and long run impact of income growth on public demand, are supported by findings from other studies. , Thesis (MCom) -- Faculty of Management and Commerce, 2011
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Medicinal properties of Moringa (Moringa Oleifera Lam) leaves and the effect of its use as a supplement on goat growth performance and meat characteristics
- Moyo, Busani https://orcid.org/0000-0001-7002-7266
- Authors: Moyo, Busani https://orcid.org/0000-0001-7002-7266
- Date: 2011-09
- Subjects: Moringa , Medicinal plants
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24376 , vital:62662
- Description: The main objective of the study was to determine if feeding goats with Moringa oleifera leaves would lead to an increase in productivity and in value of the meat. The proximate, van Soet, atomic absorption spectrophotometric and soxhlet extraction methods were used to determine the nutritional value M. oleifera leaves of the South African. The in-vitro antimicrobial screening methods were used to determine antimicrobial activities M. oleifera extracts while in vitro and invivo models were used to determine the antioxidant activities of M. oleifera leaves. An evaluation of the potential of M. oleifera leaf meal as a feed supplement in terms of its effect on helminth load, goat growth performance, carcass characteristics, meat quality attributes, nutritional and consumer sensory characteristics of goat meat was done. A total of 24, eight month old goats were randomly allocated to dietary treatments of M. oleifera leaf meal (MOL), sunflower seed cake (SC) and GH (grass hay) which was the control. All the groups were fed on basal diet of grass hay ad libitum and 200g wheat bran per head per day. The MOL group was given an additional 200 g of dried M. oleifera leaves while the SC group was offered 170 g sunflower seed cake per head/day. The study showed that the dried leaves had crude protein levels of 30.3 percent, polyunsaturated fatty acids (52.21 percent), Saturated fatty acids (43.31), n-3 (44.57 percent), n-6 (7.64 percent), 19 amino acids, vitamin E (77 mg/100 g) and Beta-carotene (18.5 mg/100 g). The M. oleifera leaf extracts showed antibacterial activities against Escherichia coli, Enterobacter cloace, Proteus vulgaris, Staphylococcus aureus and Micrococcus kristinae. The supplementation of goats with MOL and SC resulted in decreased feacal larval count and lower Haemonchus contortus, Trichostrongylus colubriforms and Oesophagastum columbianum worm burdens than those in the non-supplemented goats. Goats supplemented with SC and MOL had higher average daily weight gain and heavier carcasses than those in the GH group. Higher pH1 scores were observed in chevon from GH diet than the supplemented ones. The MOL and SC supplemented goats had chevon with higher values for lightness (L*) 24 hr post-mortem than the one from the GH group. The redness (a*) values of chevon 24 hr post mortem was highest in MOL supplemented goats. Warner Bratzler shear force (WBSF) values of SC (30.1 N) and MOL (29.8 N) supplemented goats were lower than those from GH diet (32.6 N). Chevon from goats fed GH diet had significantly higher cooking losses (29.5 percent) than that from MOL (25.4 percent) and SC (25.6 percent) fed groups. It was observed that chevon from MOL and SC supplemented groups had higher crude protein (23.57 and 22.95 percent, respectively) than the one from the GH group (21.20 percent). Cholesterol levels were higher in chevon from SC (42.84) supplemented goats than those from MOL (38.76) and GH (35.63 mg). Chevon from GH and MOL group had higher (P < 0.05) proportions of PUFA, n-3, PUFA/SFA ratio and lower n-6/n-3 ratio. Mean consumer scores for first bite, aroma, flavour and juiceness were higher in the MOL group than in the GH group (P < 0.05). The acetone extract exhibited higher concentrations of total flavonoids, flavonols, phenolics. The acetone extracts depicted higher percentage inhibition against DPPH, ABTS and nitric oxide radicals which were comparable with reference antioxidant (vitamin C and BHT). The M. oleifera leaf meal increased the antioxidant activity of GSH, SOD and catalase. Moringa oleifera leaves also exhibited medicinal properties by having anthelmintic, antibacterial activities and showed antioxidant properties. It was also observed that protein supplementation improved the animal growth performance, the physico-chemical characteristics, nutritional and fatty acids composition of meat hence meeting the consumer needs. , Thesis (PhD) -- Faculty of Science and Agriculture, 2011
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- Authors: Moyo, Busani https://orcid.org/0000-0001-7002-7266
- Date: 2011-09
- Subjects: Moringa , Medicinal plants
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24376 , vital:62662
- Description: The main objective of the study was to determine if feeding goats with Moringa oleifera leaves would lead to an increase in productivity and in value of the meat. The proximate, van Soet, atomic absorption spectrophotometric and soxhlet extraction methods were used to determine the nutritional value M. oleifera leaves of the South African. The in-vitro antimicrobial screening methods were used to determine antimicrobial activities M. oleifera extracts while in vitro and invivo models were used to determine the antioxidant activities of M. oleifera leaves. An evaluation of the potential of M. oleifera leaf meal as a feed supplement in terms of its effect on helminth load, goat growth performance, carcass characteristics, meat quality attributes, nutritional and consumer sensory characteristics of goat meat was done. A total of 24, eight month old goats were randomly allocated to dietary treatments of M. oleifera leaf meal (MOL), sunflower seed cake (SC) and GH (grass hay) which was the control. All the groups were fed on basal diet of grass hay ad libitum and 200g wheat bran per head per day. The MOL group was given an additional 200 g of dried M. oleifera leaves while the SC group was offered 170 g sunflower seed cake per head/day. The study showed that the dried leaves had crude protein levels of 30.3 percent, polyunsaturated fatty acids (52.21 percent), Saturated fatty acids (43.31), n-3 (44.57 percent), n-6 (7.64 percent), 19 amino acids, vitamin E (77 mg/100 g) and Beta-carotene (18.5 mg/100 g). The M. oleifera leaf extracts showed antibacterial activities against Escherichia coli, Enterobacter cloace, Proteus vulgaris, Staphylococcus aureus and Micrococcus kristinae. The supplementation of goats with MOL and SC resulted in decreased feacal larval count and lower Haemonchus contortus, Trichostrongylus colubriforms and Oesophagastum columbianum worm burdens than those in the non-supplemented goats. Goats supplemented with SC and MOL had higher average daily weight gain and heavier carcasses than those in the GH group. Higher pH1 scores were observed in chevon from GH diet than the supplemented ones. The MOL and SC supplemented goats had chevon with higher values for lightness (L*) 24 hr post-mortem than the one from the GH group. The redness (a*) values of chevon 24 hr post mortem was highest in MOL supplemented goats. Warner Bratzler shear force (WBSF) values of SC (30.1 N) and MOL (29.8 N) supplemented goats were lower than those from GH diet (32.6 N). Chevon from goats fed GH diet had significantly higher cooking losses (29.5 percent) than that from MOL (25.4 percent) and SC (25.6 percent) fed groups. It was observed that chevon from MOL and SC supplemented groups had higher crude protein (23.57 and 22.95 percent, respectively) than the one from the GH group (21.20 percent). Cholesterol levels were higher in chevon from SC (42.84) supplemented goats than those from MOL (38.76) and GH (35.63 mg). Chevon from GH and MOL group had higher (P < 0.05) proportions of PUFA, n-3, PUFA/SFA ratio and lower n-6/n-3 ratio. Mean consumer scores for first bite, aroma, flavour and juiceness were higher in the MOL group than in the GH group (P < 0.05). The acetone extract exhibited higher concentrations of total flavonoids, flavonols, phenolics. The acetone extracts depicted higher percentage inhibition against DPPH, ABTS and nitric oxide radicals which were comparable with reference antioxidant (vitamin C and BHT). The M. oleifera leaf meal increased the antioxidant activity of GSH, SOD and catalase. Moringa oleifera leaves also exhibited medicinal properties by having anthelmintic, antibacterial activities and showed antioxidant properties. It was also observed that protein supplementation improved the animal growth performance, the physico-chemical characteristics, nutritional and fatty acids composition of meat hence meeting the consumer needs. , Thesis (PhD) -- Faculty of Science and Agriculture, 2011
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Social policy and the state in South Africa: pathways for human capability development
- Monyai, Priscilla B. (https://orcid.org/0000-0003-0139-0939)
- Authors: Monyai, Priscilla B. (https://orcid.org/0000-0003-0139-0939)
- Date: 2011-08
- Subjects: Social Policy , Human Capital , Apartheid
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24059 , vital:62334
- Description: The main focus of this thesis is the challenges that are facing social policy development and implementation in South Africa in relation to the enhancement of human capability. The study adopted a historical approach to assess the model of social policy in South Africa and identified that social relations of domination inherited from the apartheid era continuing to produce inequalities in opportunities. Social policy under the democratic government has not managed to address social inequalities and the main drivers of poverty in the form of income poverty, asset poverty and capability poverty which are the underlying factors reproducing deprivation and destitution of the majority of the population. Although South Africa prides itself of a stable democracy, social inequalities continue to undermine the benefits of social citizenship because political participation in the midst of unequal access to economic and social resources undermine the value of citizenship. Also, inequalities in the distribution of income and wealth, and in the control of economic production undermine political equality which is an ethic upon which social rights are predicated. As a result, state interventions are lacking inherent potential to build human capability for people to live the life that they have reason to value. The paradox of social policy in South Africa is that the majority of those who are marginalised are those who were excluded by the apartheid regime even though state intervention is claimed to be targeting them. This points to the failure of incremental equalisation of opportunities within a context of stark social inequities. It is also an indication that the economic growth path delivered by the political. , Thesis (Doctoral) -- Faculty of Management and Commerce, 2011
- Full Text:
- Authors: Monyai, Priscilla B. (https://orcid.org/0000-0003-0139-0939)
- Date: 2011-08
- Subjects: Social Policy , Human Capital , Apartheid
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24059 , vital:62334
- Description: The main focus of this thesis is the challenges that are facing social policy development and implementation in South Africa in relation to the enhancement of human capability. The study adopted a historical approach to assess the model of social policy in South Africa and identified that social relations of domination inherited from the apartheid era continuing to produce inequalities in opportunities. Social policy under the democratic government has not managed to address social inequalities and the main drivers of poverty in the form of income poverty, asset poverty and capability poverty which are the underlying factors reproducing deprivation and destitution of the majority of the population. Although South Africa prides itself of a stable democracy, social inequalities continue to undermine the benefits of social citizenship because political participation in the midst of unequal access to economic and social resources undermine the value of citizenship. Also, inequalities in the distribution of income and wealth, and in the control of economic production undermine political equality which is an ethic upon which social rights are predicated. As a result, state interventions are lacking inherent potential to build human capability for people to live the life that they have reason to value. The paradox of social policy in South Africa is that the majority of those who are marginalised are those who were excluded by the apartheid regime even though state intervention is claimed to be targeting them. This points to the failure of incremental equalisation of opportunities within a context of stark social inequities. It is also an indication that the economic growth path delivered by the political. , Thesis (Doctoral) -- Faculty of Management and Commerce, 2011
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An assessment of local economic development as a mechanism for poverty alleviation: a case study of selected municipalities in Amathole District
- Authors: Dube, Kethiwe
- Date: 2011-06
- Subjects: Economic development -- South Africa , Poverty -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24410 , vital:62788
- Description: The legacy of apartheid created uneven development in South Africa, which led to lack of effective service delivery, high levels of poverty and unemployment. This resulted in many people within the communities being vulnerable to poverty. In response to the retarded development, the post apartheid government formulated a number of policies and legislations. Local Economic Development (LED) is one of the policies mandated to guide developmental local government initiatives in addressing poverty, unemployment and redistribution. The aim of the study was to assess LED as a mechanism for poverty alleviation, focusing on the effectiveness of the LED strategies employed by the selected municipalities in Amathole District Municipality (ADM). The literature and the empirical study revealed that LED is seen as a tool through which socio-economic development can be achieved. To achieve the objectives of the study, the study employed both quantitative and qualitative research methods. A thematic content and pie chat analysis were employed to analyse data, which was gathered using questionnaires, interviews, non-participant observation and documentary survey. The findings of the study revealed that LED strategies have a significant impact on improving infrastructure and service delivery, have both a pro-poor and a pro-growth focus on improving the general welfare of the residents and that LED agencies play a pivotal role in promoting sustainable development, thereby alleviating poverty. Though the current LED strategies employed by ADM are deemed to be effective, they do not fully meet the intended goal of eradicating poverty. Therefore, the researcher recommended that the municipalities should, inter alia, encourage responsible leadership, expand capital investment, promote capacity building and communities should be fully committed in working together with the municipalities in promoting sustainable development. , Thesis (MPA) -- Faculty of Management and Commerce, 2011
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- Authors: Dube, Kethiwe
- Date: 2011-06
- Subjects: Economic development -- South Africa , Poverty -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24410 , vital:62788
- Description: The legacy of apartheid created uneven development in South Africa, which led to lack of effective service delivery, high levels of poverty and unemployment. This resulted in many people within the communities being vulnerable to poverty. In response to the retarded development, the post apartheid government formulated a number of policies and legislations. Local Economic Development (LED) is one of the policies mandated to guide developmental local government initiatives in addressing poverty, unemployment and redistribution. The aim of the study was to assess LED as a mechanism for poverty alleviation, focusing on the effectiveness of the LED strategies employed by the selected municipalities in Amathole District Municipality (ADM). The literature and the empirical study revealed that LED is seen as a tool through which socio-economic development can be achieved. To achieve the objectives of the study, the study employed both quantitative and qualitative research methods. A thematic content and pie chat analysis were employed to analyse data, which was gathered using questionnaires, interviews, non-participant observation and documentary survey. The findings of the study revealed that LED strategies have a significant impact on improving infrastructure and service delivery, have both a pro-poor and a pro-growth focus on improving the general welfare of the residents and that LED agencies play a pivotal role in promoting sustainable development, thereby alleviating poverty. Though the current LED strategies employed by ADM are deemed to be effective, they do not fully meet the intended goal of eradicating poverty. Therefore, the researcher recommended that the municipalities should, inter alia, encourage responsible leadership, expand capital investment, promote capacity building and communities should be fully committed in working together with the municipalities in promoting sustainable development. , Thesis (MPA) -- Faculty of Management and Commerce, 2011
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On the design, evaluation and performance of an energy efficient solar house with integrated photovoltaics
- Authors: Ziuku, Sosten
- Date: 2011-06
- Subjects: Solar energy , Solar energy -- Environmental aspects , Photovoltaic power generation
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/27473 , vital:67331
- Description: The design, construction and performance monitoring of an energy efficient house with integrated photovoltaics is considered. Unlike conventional housing, the house design combines energy efficiency measures and renewable energy technologies into one building structure. The objective of the study was to investigate the feasibility of using energy efficient solar designs to regulate indoor thermal environment, and determine thecost effectiveness and environmental benefits of such housing designs. The use of ordinary photovoltaic panels as a building element for South Africa’s latitude and meteorological conditions was also investigated. The house model was designed using Autodesk Revit architecture and Ecotect building simulation software. Electrical performance was analyzed using RETScreen and PVDesignPRO software. In addition to passive solar design features and clerestory windows, the design has solar water heaters for hot water supply. The designed energy efficient building integrated photovoltaic (EEBIPV) house was built at the University of Fort Hare. A 3.8 kW BIPV generator was mounted on the north facing roof in such a way that the solar panels replace conventional roofing material. A data acquisition system that monitors thermal and electrical performance was installed. The grid independent house has been occupied since February 2009 and its winter indoor thermal efficiency improved from 70 to more than 78% after ceiling installation. Models for indoor thermal performance and BIPV energy and exergy contributions were developed. The avoided energy consumption from the grid has potential to reduce carbon emissions by 12.41 tons per annum. The total building cost per m2 of floor area compares favourably with the cost of commercial middle-to-upper income domestic housing units without energy efficiency measures and building integrated photovoltaics. The research output provides a good framework for the integration of passive solar designs, natural ventilation and lighting, solar water heaters and building integrated photovoltaics into new and existing housing units. , Thesis (MSci) -- Faculty of Science and Agriculture, 2011
- Full Text:
- Authors: Ziuku, Sosten
- Date: 2011-06
- Subjects: Solar energy , Solar energy -- Environmental aspects , Photovoltaic power generation
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/27473 , vital:67331
- Description: The design, construction and performance monitoring of an energy efficient house with integrated photovoltaics is considered. Unlike conventional housing, the house design combines energy efficiency measures and renewable energy technologies into one building structure. The objective of the study was to investigate the feasibility of using energy efficient solar designs to regulate indoor thermal environment, and determine thecost effectiveness and environmental benefits of such housing designs. The use of ordinary photovoltaic panels as a building element for South Africa’s latitude and meteorological conditions was also investigated. The house model was designed using Autodesk Revit architecture and Ecotect building simulation software. Electrical performance was analyzed using RETScreen and PVDesignPRO software. In addition to passive solar design features and clerestory windows, the design has solar water heaters for hot water supply. The designed energy efficient building integrated photovoltaic (EEBIPV) house was built at the University of Fort Hare. A 3.8 kW BIPV generator was mounted on the north facing roof in such a way that the solar panels replace conventional roofing material. A data acquisition system that monitors thermal and electrical performance was installed. The grid independent house has been occupied since February 2009 and its winter indoor thermal efficiency improved from 70 to more than 78% after ceiling installation. Models for indoor thermal performance and BIPV energy and exergy contributions were developed. The avoided energy consumption from the grid has potential to reduce carbon emissions by 12.41 tons per annum. The total building cost per m2 of floor area compares favourably with the cost of commercial middle-to-upper income domestic housing units without energy efficiency measures and building integrated photovoltaics. The research output provides a good framework for the integration of passive solar designs, natural ventilation and lighting, solar water heaters and building integrated photovoltaics into new and existing housing units. , Thesis (MSci) -- Faculty of Science and Agriculture, 2011
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Xenophobia in South Africa: a socio-legal analysis
- Authors: Sibanda, Samukeliso
- Date: 2011-04
- Subjects: Xenophobia -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25548 , vital:64334
- Description: The ways in which xenophobia continues to express itself in South Africa deserve to be noted at an advanced study. Over the past 15 years the expressions of xenophobia have been accompanied by increased deaths, more discrimination, increase of stereotyping of people of African descent and increased violence towards non-nationals, especially in the poorer parts of South Africa. Many of such xenophobic expressions have gone unnoticed and where they have been noticed, they have received little attention, leading to the exacerbation of the problem. The researcher of this study dwelt on a socio-legal analysis of xenophobia in South Africa. Appreciating the legal connotations and the expressions of xenophobia in South African society is a major concern of this study. To fulfill the objectives of this study, the researcher explores the extent and expression of xenophobia, in addition to analyzing and assessing the efficacy of legislative and other measures aimed to protect non-nationals in South Africa. The study investigates the role of state organizations, government and civil society and evaluates the impact of xenophobia on the enjoyment of human rights by non-nationals. A central objective of this study was to suggest alternative ways of explaining and understanding xenophobia and the responses to it. Empirical research was conducted to explore the extent of xenophobia in South Africa and how and why it is manifested in the way it is. Through in-depth face-to-face interviews it was revealed that the extent and manifestation of xenophobia differs in relation to particular communities, economic set ups and social settings; with poor communities being the most vulnerable to violent xenophobic attacks. Further, it was interesting to note that people have no firm understanding of what xenophobia entails as a social, legal, political and economical phenomenon. Again, it became evident that xenophobia still manifests in a country founded on values of equality, dignity and justice. Moreover, it was established that there is a weak link between law, human action and human behavior. It also became evident that education and sensitization need to be employed if xenophobic perceptions and behaviors are to be sufficiently dealt with. Recommendations were provided upon completion of the study. These included developing the law consciously, thus ensuring that the law has public legitimacy; effective law enforcement and prosecution; human rights education and training (especially in government departments, civil society organizations and institutions of learning); use of media and other communication channels to advocate for non discrimination, equality and respect for human rights, values and integration. Finally, the fight against xenophobia, racial discrimination and other related forms of intolerance needs to be taken up by all members of South African society and Africa at large. , Thesis (LLM) -- Faculty of Law, 2011
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- Authors: Sibanda, Samukeliso
- Date: 2011-04
- Subjects: Xenophobia -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25548 , vital:64334
- Description: The ways in which xenophobia continues to express itself in South Africa deserve to be noted at an advanced study. Over the past 15 years the expressions of xenophobia have been accompanied by increased deaths, more discrimination, increase of stereotyping of people of African descent and increased violence towards non-nationals, especially in the poorer parts of South Africa. Many of such xenophobic expressions have gone unnoticed and where they have been noticed, they have received little attention, leading to the exacerbation of the problem. The researcher of this study dwelt on a socio-legal analysis of xenophobia in South Africa. Appreciating the legal connotations and the expressions of xenophobia in South African society is a major concern of this study. To fulfill the objectives of this study, the researcher explores the extent and expression of xenophobia, in addition to analyzing and assessing the efficacy of legislative and other measures aimed to protect non-nationals in South Africa. The study investigates the role of state organizations, government and civil society and evaluates the impact of xenophobia on the enjoyment of human rights by non-nationals. A central objective of this study was to suggest alternative ways of explaining and understanding xenophobia and the responses to it. Empirical research was conducted to explore the extent of xenophobia in South Africa and how and why it is manifested in the way it is. Through in-depth face-to-face interviews it was revealed that the extent and manifestation of xenophobia differs in relation to particular communities, economic set ups and social settings; with poor communities being the most vulnerable to violent xenophobic attacks. Further, it was interesting to note that people have no firm understanding of what xenophobia entails as a social, legal, political and economical phenomenon. Again, it became evident that xenophobia still manifests in a country founded on values of equality, dignity and justice. Moreover, it was established that there is a weak link between law, human action and human behavior. It also became evident that education and sensitization need to be employed if xenophobic perceptions and behaviors are to be sufficiently dealt with. Recommendations were provided upon completion of the study. These included developing the law consciously, thus ensuring that the law has public legitimacy; effective law enforcement and prosecution; human rights education and training (especially in government departments, civil society organizations and institutions of learning); use of media and other communication channels to advocate for non discrimination, equality and respect for human rights, values and integration. Finally, the fight against xenophobia, racial discrimination and other related forms of intolerance needs to be taken up by all members of South African society and Africa at large. , Thesis (LLM) -- Faculty of Law, 2011
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