Applying anthropological perspectives in criminal procedures involving murder in Port Elizabeth, 2000-2016
- Authors: Thornton, Jessica Leigh
- Date: 2019
- Subjects: Criminal procedures
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/44688 , vital:38161
- Description: With the spike of annual reported murders in South Africa, the country is continuing to climb the global rank of the world’s most violent countries. In 2016 alone, there were over nineteen thousand reported murders, equalling over fifty murders per day, with the Eastern Cape holding position as the province with the highest murder rate. Studies indicate that Port Elizabeth is the hardest hit by crime, adding up to 60% of all reported crimes in the province and despite the use of a ‘catch and convict’ only approach in criminal proceedings, violence and crime are still highly prevalent. Thus, overall the situation suggests that it may be beyond law enforcement control and even though the South African Police Service have taken some progressive steps in reforming procedures, generally, these have been too little and too late, as the reforms introduced are piecemeal and crisis driven. This thesis, therefore, proposes that additional approaches may be needed to improve investigations of the most pernicious crimes. Here, the focus is on the role of culture and social life in ‘murder-scapes’ with a critical contribution of the ‘habitus’ of murder allowing for the meaningful engagement with criminal acts, policing, sentencing, imprisonment and probation. In this regard, perspectives drawn from anthropology can possibly assist law enforcement officials in their steps of investigating a murder by providing a more ethnographic, holistic and integrated narrative in all areas of a criminal proceeding. An efficacious and constructive interpretation of the different subcultures crime scene processing, profiles development, testimony documentation and participation production with the police force and task teams can assist in redirecting and reappraising current practises that prove incompetent. That is, in attempting to review the current procedures conducted by law enforcers to identify how and where anthropological and ethnographical knowledge can be applied and successfully utilised, an assessment may aid officials in better investigative practises which could have implications for wider lenses making use of action, investigation, containment, prevention and rehabilitation. By advancing a deep understanding of the issue of murder in the South African context, implications for a wider, equally modernising and equally troubled society in the global South can be inferred.
- Full Text:
- Date Issued: 2019
- Authors: Thornton, Jessica Leigh
- Date: 2019
- Subjects: Criminal procedures
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/44688 , vital:38161
- Description: With the spike of annual reported murders in South Africa, the country is continuing to climb the global rank of the world’s most violent countries. In 2016 alone, there were over nineteen thousand reported murders, equalling over fifty murders per day, with the Eastern Cape holding position as the province with the highest murder rate. Studies indicate that Port Elizabeth is the hardest hit by crime, adding up to 60% of all reported crimes in the province and despite the use of a ‘catch and convict’ only approach in criminal proceedings, violence and crime are still highly prevalent. Thus, overall the situation suggests that it may be beyond law enforcement control and even though the South African Police Service have taken some progressive steps in reforming procedures, generally, these have been too little and too late, as the reforms introduced are piecemeal and crisis driven. This thesis, therefore, proposes that additional approaches may be needed to improve investigations of the most pernicious crimes. Here, the focus is on the role of culture and social life in ‘murder-scapes’ with a critical contribution of the ‘habitus’ of murder allowing for the meaningful engagement with criminal acts, policing, sentencing, imprisonment and probation. In this regard, perspectives drawn from anthropology can possibly assist law enforcement officials in their steps of investigating a murder by providing a more ethnographic, holistic and integrated narrative in all areas of a criminal proceeding. An efficacious and constructive interpretation of the different subcultures crime scene processing, profiles development, testimony documentation and participation production with the police force and task teams can assist in redirecting and reappraising current practises that prove incompetent. That is, in attempting to review the current procedures conducted by law enforcers to identify how and where anthropological and ethnographical knowledge can be applied and successfully utilised, an assessment may aid officials in better investigative practises which could have implications for wider lenses making use of action, investigation, containment, prevention and rehabilitation. By advancing a deep understanding of the issue of murder in the South African context, implications for a wider, equally modernising and equally troubled society in the global South can be inferred.
- Full Text:
- Date Issued: 2019
Development of a manual to train food handlers of the national school nutrition programme
- Authors: Barkhuizen, Kirsten Lyn
- Date: 2019
- Subjects: Food -- Safety measures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/36559 , vital:33974
- Description: The study was conducted in order to develop a hygiene and food safety manual that can be used to train the food handlers of the National School Nutrition Programme. The co-operation of the Institute for International Medicine, Partnerships with Children, as part of the Health in Action Programme in this study, is appreciated. Food handlers of the National School Nutrition Programme in low socio-economic schools, in the Nelson Mandela Bay, in the Eastern Cape, were the population of the study. With many South Africans experiencing poverty and food insecurity, the National School Nutrition Programme aims to provide a social safety net and address short term hunger in children. However, challenges are faced regarding the implementation thereof, such as a lack of training of food handlers. This results in poor hygiene and food safety knowledge and behaviour. Subsequently, the risk of transmission of foodborne pathogens and the contamination of food rises. Foodborne illnesses are a major cause of morbidity and mortality, specifically in children, due to weak immune systems. Therefore, the study was conducted in order to develop and test a hygiene and food safety manual so that it can be made available to the South African Department of Education to be used by teachers in order to train the food handlers of the National School Nutrition Programme. The manual can then be used to train all newly recruited food handlers, and therefore ensure that school meals are safe to consume by learners.
- Full Text:
- Date Issued: 2019
- Authors: Barkhuizen, Kirsten Lyn
- Date: 2019
- Subjects: Food -- Safety measures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/36559 , vital:33974
- Description: The study was conducted in order to develop a hygiene and food safety manual that can be used to train the food handlers of the National School Nutrition Programme. The co-operation of the Institute for International Medicine, Partnerships with Children, as part of the Health in Action Programme in this study, is appreciated. Food handlers of the National School Nutrition Programme in low socio-economic schools, in the Nelson Mandela Bay, in the Eastern Cape, were the population of the study. With many South Africans experiencing poverty and food insecurity, the National School Nutrition Programme aims to provide a social safety net and address short term hunger in children. However, challenges are faced regarding the implementation thereof, such as a lack of training of food handlers. This results in poor hygiene and food safety knowledge and behaviour. Subsequently, the risk of transmission of foodborne pathogens and the contamination of food rises. Foodborne illnesses are a major cause of morbidity and mortality, specifically in children, due to weak immune systems. Therefore, the study was conducted in order to develop and test a hygiene and food safety manual so that it can be made available to the South African Department of Education to be used by teachers in order to train the food handlers of the National School Nutrition Programme. The manual can then be used to train all newly recruited food handlers, and therefore ensure that school meals are safe to consume by learners.
- Full Text:
- Date Issued: 2019
Employee happiness at ARMSCOR
- Authors: Rakgabyane, Michael Tsie
- Date: 2019
- Subjects: Employee morale
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/43018 , vital:36732
- Description: The subject of happiness has captured many across the world. There is an increasing debate on whether there is a link between improving the national happiness levels and country’s Gross Domestic Product (GDP). Happiness has become an area of interest for both organisations and individuals because of the consequential benefits. Research affirmed the importance of happiness in improving the function of both society and organisations. The benefit thereof includes but is not limited to increased productivity and longevity. Having unhappy employees could have dire effects on the organisations due to the direct impact on the organisation’s financial and social conditions. The arms industry is generally seen as a highly secretive industry due to the strategic position and importance that it occupies in various countries. Happiness in the arms industry has never been explored. This makes this study new in this particular industry. The arms industry as a whole can also benefit by focusing on improving employees’ happiness levels. This makes the study in Armscor important as it would help to provide some insight on the happiness levels in this industry. The focus of this study is to establish happiness levels of Armscor employees. For the purpose of this study, the primary data for the study were collected from a representative sample of 170 Armscor employees which included 161 permanent and 9 non-permanent employees. The questionnaire designed from the literature was used to collect the data. The in-depth literature review that was conducted in carrying out this study included exploring the different perspectives from which happiness is defined. This included three seemingly dominant perspectives: philosophic, economic and psychological perspectives. Furthermore, the review of literature included examining happiness theories and explored three main theories: Comparison, Folklore and Livability. The literature review provided a basis for a proposed conceptual model, which suggested the following factors as influencing happiness in the workplace: workplace influence, workplace relationships, work-life balance, purpose, optimism, work satisfaction, leisure, SA pride and trust. Exploratory factor analysis was used to test the proposed conceptual model and the results indicate that workplace influence, workplace vi relationships and work satisfaction load onto the factor work; while trust and SA pride load onto the factor trust pride; and purpose, work-life balance and optimism load onto the factor purpose work-life optimism. The treatise concludes with recommendations that management can consider implementing to improve the happiness levels of employees at Armscor. This study contributes to understanding the happiness levels of employees in the arms industry.
- Full Text:
- Date Issued: 2019
- Authors: Rakgabyane, Michael Tsie
- Date: 2019
- Subjects: Employee morale
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/43018 , vital:36732
- Description: The subject of happiness has captured many across the world. There is an increasing debate on whether there is a link between improving the national happiness levels and country’s Gross Domestic Product (GDP). Happiness has become an area of interest for both organisations and individuals because of the consequential benefits. Research affirmed the importance of happiness in improving the function of both society and organisations. The benefit thereof includes but is not limited to increased productivity and longevity. Having unhappy employees could have dire effects on the organisations due to the direct impact on the organisation’s financial and social conditions. The arms industry is generally seen as a highly secretive industry due to the strategic position and importance that it occupies in various countries. Happiness in the arms industry has never been explored. This makes this study new in this particular industry. The arms industry as a whole can also benefit by focusing on improving employees’ happiness levels. This makes the study in Armscor important as it would help to provide some insight on the happiness levels in this industry. The focus of this study is to establish happiness levels of Armscor employees. For the purpose of this study, the primary data for the study were collected from a representative sample of 170 Armscor employees which included 161 permanent and 9 non-permanent employees. The questionnaire designed from the literature was used to collect the data. The in-depth literature review that was conducted in carrying out this study included exploring the different perspectives from which happiness is defined. This included three seemingly dominant perspectives: philosophic, economic and psychological perspectives. Furthermore, the review of literature included examining happiness theories and explored three main theories: Comparison, Folklore and Livability. The literature review provided a basis for a proposed conceptual model, which suggested the following factors as influencing happiness in the workplace: workplace influence, workplace relationships, work-life balance, purpose, optimism, work satisfaction, leisure, SA pride and trust. Exploratory factor analysis was used to test the proposed conceptual model and the results indicate that workplace influence, workplace vi relationships and work satisfaction load onto the factor work; while trust and SA pride load onto the factor trust pride; and purpose, work-life balance and optimism load onto the factor purpose work-life optimism. The treatise concludes with recommendations that management can consider implementing to improve the happiness levels of employees at Armscor. This study contributes to understanding the happiness levels of employees in the arms industry.
- Full Text:
- Date Issued: 2019
Innovative management in the South African public service: a case of the Department Of Health in Limpopo province
- Authors: Shipalana, Machanduke Lucas
- Date: 2019
- Subjects: Public administration -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/40192 , vital:35981
- Description: Public institutions across the globe are usually faced with challenges of adopting creative ways for service delivery improvement in the form of innovative management. The development of innovative management in public institutions would be seen as a contribution in addressing the underlying challenges regarding service delivery, specifically in the developing countries such as South Africa. It is, however, observed that public institutions are often characterised by ineffective innovative management strategies and approaches that affect the provision of quality services.The aim of this study was to investigate innovative management challenges and measures necessary for enhancing health innovation in a quest for public service delivery improvement. The focus was based in the Limpopo Department of Health which served as a unit of analysis. The research utilised a qualitative approach with data collection methods, which included semi-structured interviews, focus group interview and document analysis. The semi-structured interviews included 52 participants selected through purposive sampling from various categories of management, clinical managers and community liaison officers within the Limpopo Department of Health. A focus group interview consisted of members of district health councils representing each district in the province. The documentary analysis included a consultation and use of official documentary sources such as departmental Annual Performance Plans (APPs) for the 2012/13 to 2016/17 financial years and departmental audit opinion outcomes issued by the Auditor General of South Africa as part of primary data sources. The findings of the study reveal among others, that there is ineffective innovative management caused by poor diffusion of innovations, lack of innovative management support structures and, lack of innovative management strategies and approaches within the Limpopo Department of Health. Furthermore, the study’s finding about lack of integrated innovative managerial functional areas motivated the researcher to propose the development of an integrated innovative managerial functions model for service delivery improvement. A development of such an integrated model is intended to harness health innovation efforts to key service delivery components within the public institutions, specifically in the Limpopo Department of Health.
- Full Text:
- Date Issued: 2019
- Authors: Shipalana, Machanduke Lucas
- Date: 2019
- Subjects: Public administration -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/40192 , vital:35981
- Description: Public institutions across the globe are usually faced with challenges of adopting creative ways for service delivery improvement in the form of innovative management. The development of innovative management in public institutions would be seen as a contribution in addressing the underlying challenges regarding service delivery, specifically in the developing countries such as South Africa. It is, however, observed that public institutions are often characterised by ineffective innovative management strategies and approaches that affect the provision of quality services.The aim of this study was to investigate innovative management challenges and measures necessary for enhancing health innovation in a quest for public service delivery improvement. The focus was based in the Limpopo Department of Health which served as a unit of analysis. The research utilised a qualitative approach with data collection methods, which included semi-structured interviews, focus group interview and document analysis. The semi-structured interviews included 52 participants selected through purposive sampling from various categories of management, clinical managers and community liaison officers within the Limpopo Department of Health. A focus group interview consisted of members of district health councils representing each district in the province. The documentary analysis included a consultation and use of official documentary sources such as departmental Annual Performance Plans (APPs) for the 2012/13 to 2016/17 financial years and departmental audit opinion outcomes issued by the Auditor General of South Africa as part of primary data sources. The findings of the study reveal among others, that there is ineffective innovative management caused by poor diffusion of innovations, lack of innovative management support structures and, lack of innovative management strategies and approaches within the Limpopo Department of Health. Furthermore, the study’s finding about lack of integrated innovative managerial functional areas motivated the researcher to propose the development of an integrated innovative managerial functions model for service delivery improvement. A development of such an integrated model is intended to harness health innovation efforts to key service delivery components within the public institutions, specifically in the Limpopo Department of Health.
- Full Text:
- Date Issued: 2019
The anti-inflammatory effects of Sutherlandia Frutescens in a cell and animal model
- Authors: Fortuin-Seedat, Maleeha
- Date: 2019
- Subjects: Medicinal Plant -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/44617 , vital:38167
- Description: The South African medicinal plant, Sutherlandia frutescens has anti-diabetic, antiinflammatory and antioxidant properties. Many of the mediators of inflammation are also involved in obesity and diabetes. Furthermore, T2D can either induce inflammation, or exacerbate the inflammatory response by maintaining imbalances between pro-and anti-inflammatory mediators. Two macrophage sub-populations involved in the regulation of immune responses have been defined. These are classically activated macrophages (M1) which stimulate inflammation, and alternatively activated macrophages (M2), which show anti-inflammatory activity. Therefore it is hypothesised that S. frutescens can potentially regulate macrophage polarization states which, in turn, influence metabolic immunomodulatory processes. The aims of this study were firstly to identify the mechanisms(s) by which S. frutescens could improve the low-grade inflammatory status in obese and T2D individuals using a transgenic mouse model of obesity, and secondly to determine the immunomodulating properties of S. frutescens in the human monocytic THP-1 cell line. Groups of nine week old male db/db mice were gavaged daily with water (vehicle control), Vildagliptin (10mL kg-1)(positive medication control) or hot aqueous S. frutescens extract at concentrations of 5mg, 50mg, 250mg kg-1 for 4 weeks. Body weight and fasting plasma glucose levels were determined weekly. The potential for hot aqueous S. frutescens extract to lower postprandial hyperglycaemia and promote insulin sensitivity was determined by an oral glucose tolerance test (OGTT) after a 16 hour fast, and an insulin radioimmunoassay (RIA) after a 4 hour fast before termination. After 4 weeks of hot aqueous S. frutescens treatment the total percentage body weight of 13 week old db/db mice was reduced, but hyperglycaemia was not prevented. Human THP-1 monocytes were stimulated to differentiate into macrophages with phorbol-12myristate-13acetate (PMA) and cultured under pro-inflammatory conditions (M1) or anti-inflammatory conditions (M2). Cell viability and anti-proliferative effects of LPS and S. frutescens extracts were determined. The effect of hot aqueous and ethanolic S. frutescens extracts on M1 and M2 macrophage cell surface markers was investigated by flow cytometry using CD86 (M1) and CD206 (M2). The effect of the S. frutescens extracts on three signalling pathways and a pro-inflammatory mediator activated in an LPS-induced inflammatory response were determined using Western blotting. Changes in mRNA gene expression levels of downstream transcription factors, cytokines and chemokines associated with M1 and M2 polarised macrophages were investigated using qRT-PCR. Both ethanolic and hot aqueous S. frutescens extracts reduced cytotoxicity caused by LPS. S. frutescens extracts alone did not alter cell viability. Furthermore, both hot and ethanolic S. frutescens extracts reduced expression of the M1 marker CD86 and nonsignificantly induced expression of an M2 marker CD206, following LPS stimulation. Following M2 induction, the M1 and M2 cell surface markers were reverted to baseline M0 macrophage expression by both S. frutescens extracts. The S. frutescens extracts mediated immune-regulatory activity through suppression of the pro-inflammatory p38 MAPK and NFκB signalling pathways and regulated apoptosis through the ERK1/2 pathway. The hot aqueous S. frutescens extract exerted anti-inflammatory effects through the IKK pathway and/ or GSK3β signalling pathway. This thesis demonstrates that S. frutescens promotes macrophage homeostasis by maintaining the balance between M1 and M2 macrophages during pro-and antiinflammatory immune responses. The regulation may occur during the activation and polarization process, via rapid deactivation of M1 macrophages and a decrease in need for macrophages to switch to an M2 phenotype. Furthermore S. frutescens is hypothesised to play a role in the regulation of the GSK3β signalling which plays a central role in regulating inflammation associated with pathophysiological conditions such as IR, T2D and obesity via the PI3K/Akt pathway.
- Full Text:
- Date Issued: 2019
- Authors: Fortuin-Seedat, Maleeha
- Date: 2019
- Subjects: Medicinal Plant -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/44617 , vital:38167
- Description: The South African medicinal plant, Sutherlandia frutescens has anti-diabetic, antiinflammatory and antioxidant properties. Many of the mediators of inflammation are also involved in obesity and diabetes. Furthermore, T2D can either induce inflammation, or exacerbate the inflammatory response by maintaining imbalances between pro-and anti-inflammatory mediators. Two macrophage sub-populations involved in the regulation of immune responses have been defined. These are classically activated macrophages (M1) which stimulate inflammation, and alternatively activated macrophages (M2), which show anti-inflammatory activity. Therefore it is hypothesised that S. frutescens can potentially regulate macrophage polarization states which, in turn, influence metabolic immunomodulatory processes. The aims of this study were firstly to identify the mechanisms(s) by which S. frutescens could improve the low-grade inflammatory status in obese and T2D individuals using a transgenic mouse model of obesity, and secondly to determine the immunomodulating properties of S. frutescens in the human monocytic THP-1 cell line. Groups of nine week old male db/db mice were gavaged daily with water (vehicle control), Vildagliptin (10mL kg-1)(positive medication control) or hot aqueous S. frutescens extract at concentrations of 5mg, 50mg, 250mg kg-1 for 4 weeks. Body weight and fasting plasma glucose levels were determined weekly. The potential for hot aqueous S. frutescens extract to lower postprandial hyperglycaemia and promote insulin sensitivity was determined by an oral glucose tolerance test (OGTT) after a 16 hour fast, and an insulin radioimmunoassay (RIA) after a 4 hour fast before termination. After 4 weeks of hot aqueous S. frutescens treatment the total percentage body weight of 13 week old db/db mice was reduced, but hyperglycaemia was not prevented. Human THP-1 monocytes were stimulated to differentiate into macrophages with phorbol-12myristate-13acetate (PMA) and cultured under pro-inflammatory conditions (M1) or anti-inflammatory conditions (M2). Cell viability and anti-proliferative effects of LPS and S. frutescens extracts were determined. The effect of hot aqueous and ethanolic S. frutescens extracts on M1 and M2 macrophage cell surface markers was investigated by flow cytometry using CD86 (M1) and CD206 (M2). The effect of the S. frutescens extracts on three signalling pathways and a pro-inflammatory mediator activated in an LPS-induced inflammatory response were determined using Western blotting. Changes in mRNA gene expression levels of downstream transcription factors, cytokines and chemokines associated with M1 and M2 polarised macrophages were investigated using qRT-PCR. Both ethanolic and hot aqueous S. frutescens extracts reduced cytotoxicity caused by LPS. S. frutescens extracts alone did not alter cell viability. Furthermore, both hot and ethanolic S. frutescens extracts reduced expression of the M1 marker CD86 and nonsignificantly induced expression of an M2 marker CD206, following LPS stimulation. Following M2 induction, the M1 and M2 cell surface markers were reverted to baseline M0 macrophage expression by both S. frutescens extracts. The S. frutescens extracts mediated immune-regulatory activity through suppression of the pro-inflammatory p38 MAPK and NFκB signalling pathways and regulated apoptosis through the ERK1/2 pathway. The hot aqueous S. frutescens extract exerted anti-inflammatory effects through the IKK pathway and/ or GSK3β signalling pathway. This thesis demonstrates that S. frutescens promotes macrophage homeostasis by maintaining the balance between M1 and M2 macrophages during pro-and antiinflammatory immune responses. The regulation may occur during the activation and polarization process, via rapid deactivation of M1 macrophages and a decrease in need for macrophages to switch to an M2 phenotype. Furthermore S. frutescens is hypothesised to play a role in the regulation of the GSK3β signalling which plays a central role in regulating inflammation associated with pathophysiological conditions such as IR, T2D and obesity via the PI3K/Akt pathway.
- Full Text:
- Date Issued: 2019
Co-production of trust for effective local governance: a case study of the Nelson Mandela Bay Municipality
- Authors: Jakoet-Salie, Amina
- Date: 2018
- Subjects: Public participation -- South Africa -- Nelson Mandela Bay Local government -- South Africa -- Nelson Mandela Bay
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/20297 , vital:29227
- Description: The primary aim of this study was to establish whether co-production of public services will lead to trust in service delivery and ultimately to trust in government, with specific reference to the Nelson Mandela Bay Municipality (NMBM). Furthermore, this research investigatedthe fundamental reasons for the mistrust in government, in lieu of the ongoing service delivery protests and officials who are at times not held accountable for their actions. This study acknowledges that there is an underlying problem of lack ofpublic participation and co-production at the sphere of local government.This research is solely based on the assumption thatif co-production is non-existent or problematic and if communities lose trust in the performance of municipalities, any attempts by the government to address these challenges relating to effective governance would be ineffective.The studyprovidesan in-depth theoretical review on co-production, public participation, citizen engagement and trust, with reference to both the national and international context. The study employed both quantitative and qualitative research approaches to validate the research questions and authenticate the problem statement. The triangulation approach allowed the researcher to effectively engage the strengths of both research methodologies. The research findings from the empirical survey were statistically analysed using statistical procedures. The data analysis, derived from the qualitative research approach, involved thematic content analysis. The sample populations for the study comprised councillors selected senior officials and ward committee members. For the quantitative approach, questionnaires were employed for the councillors and the officials. Focus group interviews were conducted with ward committee members as the qualitative component of the study. The findings of the study revealed that as a result of communities’ increasing lack of trust and confidence in local government, service delivery protests are increasing.The study further indicated thatcommunities in the NMBM are generally not well informed about the development plans of the municipality and do not adequately participate in local government activities.The findings from the focus group interviewsconcluded that the working relationship between the ward councillors and ward committee members was somewhat strained and this could have a negative impact on service delivery and ultimately trust levels.Recommendations emanating from the empirical survey and focus group interviews are presented to promote public participation and co-production which essentially could lead to an increase in trust in local government. Legislative prescriptions require that communitiesshould actively participate in the decision-making processes at the local sphere of government. In this regard, a normative model is proposed to further enhance this requirement.
- Full Text:
- Date Issued: 2018
- Authors: Jakoet-Salie, Amina
- Date: 2018
- Subjects: Public participation -- South Africa -- Nelson Mandela Bay Local government -- South Africa -- Nelson Mandela Bay
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/20297 , vital:29227
- Description: The primary aim of this study was to establish whether co-production of public services will lead to trust in service delivery and ultimately to trust in government, with specific reference to the Nelson Mandela Bay Municipality (NMBM). Furthermore, this research investigatedthe fundamental reasons for the mistrust in government, in lieu of the ongoing service delivery protests and officials who are at times not held accountable for their actions. This study acknowledges that there is an underlying problem of lack ofpublic participation and co-production at the sphere of local government.This research is solely based on the assumption thatif co-production is non-existent or problematic and if communities lose trust in the performance of municipalities, any attempts by the government to address these challenges relating to effective governance would be ineffective.The studyprovidesan in-depth theoretical review on co-production, public participation, citizen engagement and trust, with reference to both the national and international context. The study employed both quantitative and qualitative research approaches to validate the research questions and authenticate the problem statement. The triangulation approach allowed the researcher to effectively engage the strengths of both research methodologies. The research findings from the empirical survey were statistically analysed using statistical procedures. The data analysis, derived from the qualitative research approach, involved thematic content analysis. The sample populations for the study comprised councillors selected senior officials and ward committee members. For the quantitative approach, questionnaires were employed for the councillors and the officials. Focus group interviews were conducted with ward committee members as the qualitative component of the study. The findings of the study revealed that as a result of communities’ increasing lack of trust and confidence in local government, service delivery protests are increasing.The study further indicated thatcommunities in the NMBM are generally not well informed about the development plans of the municipality and do not adequately participate in local government activities.The findings from the focus group interviewsconcluded that the working relationship between the ward councillors and ward committee members was somewhat strained and this could have a negative impact on service delivery and ultimately trust levels.Recommendations emanating from the empirical survey and focus group interviews are presented to promote public participation and co-production which essentially could lead to an increase in trust in local government. Legislative prescriptions require that communitiesshould actively participate in the decision-making processes at the local sphere of government. In this regard, a normative model is proposed to further enhance this requirement.
- Full Text:
- Date Issued: 2018
Performance evaluation of an off-grid building integrated photovoltaic system in Alice, Eastern Cape province, South Africa
- Authors: Buma, Carine Lethem
- Date: 2018
- Subjects: Building-integrated photovoltaic systems Buildings -- Energy conservation Performance -- Evaluation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/13227 , vital:39623
- Description: The constant increase in the global demand for energy and the current crisis on global warming and climate change has prompted a dying quest for clean, sustainable and reliable sources of energy. Amongst numerous renewable energy technologies, harnessing energy from the sun is the most viable way of guaranteeing a clean and sustainable supply of energy. Also, photovoltaic energy is one of the ways of using energy from the sun, where sunlight is converted to electricity using photovoltaic panels. Furthermore, the integration of photovoltaic modules into buildings is one of the most elegant innovations of this technology, as it plays the dual role of supplying energy to the building as well as protecting the building from outdoor weather conditions. Moreover, operating off the grid offers the possibility of energy access to locations far off from the grid and individuals willing to gain some degree of energy independence. Evaluating the performance of existing off grid and/or building integrated photovoltaic systems is the key to guaranteeing sustainable development and advancement in the technology. Thus, the aim of this work was to evaluate the performance of an off-grid building integrated photovoltaic system that was installed at the Fort Hare Institute of Technology. This entailed performing an in-depth characterisation of the solar resource at this location, evaluating the performance of the modules under outdoor weather conditions and also evaluating the performance of the balance of system (BOS) components. The system was monitored for a period of nine months (between February and October 2017). A data acquisition system was designed for measuring and recording both electrical system parameters and meteorological parameters affecting the performance of the system. These meteorological parameters include; solar irradiance, ambient temperature, cell temperature, relative humidity, wind speed and direction. A detailed characterisation of the solar resource at this location was carried out. It was observed that the solar declination angle varied from -23.5o on the summer solstice to 23.5o on the winter solstice. Also, the solar altitude angle (at solar noon) which is a complementary angle to the zenith angle varied from 33.7o in June to 80.65o in December. During the summer months, longer day lengths were experienced because the sun traversed the sky over a longer time, rising south of east and setting south of west. Whereas, in the winter months, the path length of the sun was shorter, with the sun rising north of east and setting north of west, hence, shorter day lengths. The solar radiation incident on a 25o north facing solar collector was found to be in three components; beam, diffuse and reflected. The beam component was higher in summer whereas the diffuse component was higher in winter due to an increase in the air mass ratio. However, the total daily average radiation was highest in January (7.12 peak sun hours) and least in June (3.04 peak sun hours). Finally, a comparison between the calculated and measured values of solar radiation showed just a 1.1percent difference over the year with disparities being in the individual months.m The influence of outdoor weather conditions on the performance of the system was also evaluated. Operating temperatures were noticed to have a great impact on the output voltage and power of the PV array. Significant correlations existed between various meteorological parameters. Also, a multiple linear regression model was developed to ascertain the dependence of module temperature on solar irradiance, ambient temperature, relative humidity, wind speed and wind direction. The coefficient of determination for the model was 0.928, showing a strong relationship between cell temperature and the chosen predictors. Also, the six thermocouples installed at various locations of the PV array revealed variations in the operating temperatures of the modules. The modules on the east side of the array recorded relatively lower temperatures because of the ceiling that had been removed beneath one of the modules on this side of the array, which permitted the free flow of air. Furthermore, I-V measurements conducted on various strings of the array revealed so many steps (hotspots), indicative of module (or cell) mismatch on almost all the cell strings.
- Full Text:
- Date Issued: 2018
- Authors: Buma, Carine Lethem
- Date: 2018
- Subjects: Building-integrated photovoltaic systems Buildings -- Energy conservation Performance -- Evaluation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/13227 , vital:39623
- Description: The constant increase in the global demand for energy and the current crisis on global warming and climate change has prompted a dying quest for clean, sustainable and reliable sources of energy. Amongst numerous renewable energy technologies, harnessing energy from the sun is the most viable way of guaranteeing a clean and sustainable supply of energy. Also, photovoltaic energy is one of the ways of using energy from the sun, where sunlight is converted to electricity using photovoltaic panels. Furthermore, the integration of photovoltaic modules into buildings is one of the most elegant innovations of this technology, as it plays the dual role of supplying energy to the building as well as protecting the building from outdoor weather conditions. Moreover, operating off the grid offers the possibility of energy access to locations far off from the grid and individuals willing to gain some degree of energy independence. Evaluating the performance of existing off grid and/or building integrated photovoltaic systems is the key to guaranteeing sustainable development and advancement in the technology. Thus, the aim of this work was to evaluate the performance of an off-grid building integrated photovoltaic system that was installed at the Fort Hare Institute of Technology. This entailed performing an in-depth characterisation of the solar resource at this location, evaluating the performance of the modules under outdoor weather conditions and also evaluating the performance of the balance of system (BOS) components. The system was monitored for a period of nine months (between February and October 2017). A data acquisition system was designed for measuring and recording both electrical system parameters and meteorological parameters affecting the performance of the system. These meteorological parameters include; solar irradiance, ambient temperature, cell temperature, relative humidity, wind speed and direction. A detailed characterisation of the solar resource at this location was carried out. It was observed that the solar declination angle varied from -23.5o on the summer solstice to 23.5o on the winter solstice. Also, the solar altitude angle (at solar noon) which is a complementary angle to the zenith angle varied from 33.7o in June to 80.65o in December. During the summer months, longer day lengths were experienced because the sun traversed the sky over a longer time, rising south of east and setting south of west. Whereas, in the winter months, the path length of the sun was shorter, with the sun rising north of east and setting north of west, hence, shorter day lengths. The solar radiation incident on a 25o north facing solar collector was found to be in three components; beam, diffuse and reflected. The beam component was higher in summer whereas the diffuse component was higher in winter due to an increase in the air mass ratio. However, the total daily average radiation was highest in January (7.12 peak sun hours) and least in June (3.04 peak sun hours). Finally, a comparison between the calculated and measured values of solar radiation showed just a 1.1percent difference over the year with disparities being in the individual months.m The influence of outdoor weather conditions on the performance of the system was also evaluated. Operating temperatures were noticed to have a great impact on the output voltage and power of the PV array. Significant correlations existed between various meteorological parameters. Also, a multiple linear regression model was developed to ascertain the dependence of module temperature on solar irradiance, ambient temperature, relative humidity, wind speed and wind direction. The coefficient of determination for the model was 0.928, showing a strong relationship between cell temperature and the chosen predictors. Also, the six thermocouples installed at various locations of the PV array revealed variations in the operating temperatures of the modules. The modules on the east side of the array recorded relatively lower temperatures because of the ceiling that had been removed beneath one of the modules on this side of the array, which permitted the free flow of air. Furthermore, I-V measurements conducted on various strings of the array revealed so many steps (hotspots), indicative of module (or cell) mismatch on almost all the cell strings.
- Full Text:
- Date Issued: 2018
An investigation of the functional responsibilities of the municipal councillors at the Nelson Mandela Bay Metropolitan Municipality during the Implementation of the Integrated Development Plan (IDP)
- Authors: Nkombela, Lizwi Eric
- Date: 2017
- Subjects: Municipal officials and employees -- South Africa -- Nelson Mandela Bay Municipality Local government -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/20132 , vital:29129
- Description: The study is undertaken to investigate the functional responsibilities of the municipal councillors at the Nelson Mandela Bay Metropolitan Municipality during the implementation of the Integrated Development Plan (IDP). It aims to examine the experiences and perceptions that ward councillors have of their representative and participatory roles, including the support provided by the local government during the implementation of the IDP at the Nelson Mandela Bay Metropolitan Municipality. In the statement of the problem, the researcher has provided the basis and the rationale for this study. This study is undertaken against the backdrop of protest on service delivery as the current local government system struggles to effectively provide basic services to communities, as well as attend to their economic and social development needs. There are various factors that contribute to effective governance of local government, however, for the sake of this research not all of them will be studied by the researcher. The researcher has indicated some of the limitations in this study and will only focus on the ward councillors and their functional responsibilities at the Nelson Mandela Bay Metropolitan Municipality. The contextualization of this study is premised on the existing theoretical, legislative and conceptual views that apply to functional responsibilities of the municipal councillors and these were drawn from various sources to quantitatively obtain the data for this study. The study also explains the research design and methodology applied to elicit information from a sample of 31 ward councillors of the Nelson Mandela Bay Metropolitan Municipality. The quantitative data which was received through questionnaires was presented, analysed and discussed by the researcher. The researcher used the frequency distribution and percentage in order to draw up the conclusions and recommendations. The quantitative data revealed to a greater extent a positive response from the 31 ward councillors regarding their experiences and perceptions of their representative and participatory roles and their understanding of the support provided by the local government during the implementation of the IDP at the Nelson Mandela Bay Metropolitan Municipality.
- Full Text:
- Date Issued: 2017
- Authors: Nkombela, Lizwi Eric
- Date: 2017
- Subjects: Municipal officials and employees -- South Africa -- Nelson Mandela Bay Municipality Local government -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/20132 , vital:29129
- Description: The study is undertaken to investigate the functional responsibilities of the municipal councillors at the Nelson Mandela Bay Metropolitan Municipality during the implementation of the Integrated Development Plan (IDP). It aims to examine the experiences and perceptions that ward councillors have of their representative and participatory roles, including the support provided by the local government during the implementation of the IDP at the Nelson Mandela Bay Metropolitan Municipality. In the statement of the problem, the researcher has provided the basis and the rationale for this study. This study is undertaken against the backdrop of protest on service delivery as the current local government system struggles to effectively provide basic services to communities, as well as attend to their economic and social development needs. There are various factors that contribute to effective governance of local government, however, for the sake of this research not all of them will be studied by the researcher. The researcher has indicated some of the limitations in this study and will only focus on the ward councillors and their functional responsibilities at the Nelson Mandela Bay Metropolitan Municipality. The contextualization of this study is premised on the existing theoretical, legislative and conceptual views that apply to functional responsibilities of the municipal councillors and these were drawn from various sources to quantitatively obtain the data for this study. The study also explains the research design and methodology applied to elicit information from a sample of 31 ward councillors of the Nelson Mandela Bay Metropolitan Municipality. The quantitative data which was received through questionnaires was presented, analysed and discussed by the researcher. The researcher used the frequency distribution and percentage in order to draw up the conclusions and recommendations. The quantitative data revealed to a greater extent a positive response from the 31 ward councillors regarding their experiences and perceptions of their representative and participatory roles and their understanding of the support provided by the local government during the implementation of the IDP at the Nelson Mandela Bay Metropolitan Municipality.
- Full Text:
- Date Issued: 2017
Buchu and Bobotie in the Boland : culinary heritage in Franschhoek, Western Cape
- Authors: Deavin, Candace
- Date: 2017
- Subjects: Food habits -- South Africa -- Franschhoek -- Cross-cultural studies Plants, Edible -- South Africa -- Franschhoek
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/22254 , vital:29923
- Description: From a confit tomato and potato tumbleweed with buchu to a cured snoek terrine rolled in wilde kruie and Cape bobotie puff pastry with blatjang, chefs that mix indigenous plants and local cuisine with European inspiration and training have proved popular in Franschhoek’s restaurants. In this boland town, the particular constructions of heritage through food, not only showcases regional flavours, but gestures towards the search for an elusive place-based ‘South African’ cuisine that is seen to be rooted in the land. Harkening back to old culinary practices and drawing from their own heritages, Franschhoek’s chefs are foraging, butchering, gathering, growing, fermenting, pickling and cooking over open fires with renewed vigour as they attempt to ground their cuisine, and indeed, themselves, in the soil around them. This thesis considers how, through the culinary repertoire of chefs in Franschhoek, food is constructed as heritage. Within this I look at what heritages are considered desirable, how food’s sensory and symbolic properties are used to their full potential, and who is behind these constructions of culinary heritage. Following on from this, I explore postcolonial and post-apartheid anxieties of place and belonging, as well as desired and emergent identities that are expressed through this culinary heritage.
- Full Text:
- Date Issued: 2017
- Authors: Deavin, Candace
- Date: 2017
- Subjects: Food habits -- South Africa -- Franschhoek -- Cross-cultural studies Plants, Edible -- South Africa -- Franschhoek
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/22254 , vital:29923
- Description: From a confit tomato and potato tumbleweed with buchu to a cured snoek terrine rolled in wilde kruie and Cape bobotie puff pastry with blatjang, chefs that mix indigenous plants and local cuisine with European inspiration and training have proved popular in Franschhoek’s restaurants. In this boland town, the particular constructions of heritage through food, not only showcases regional flavours, but gestures towards the search for an elusive place-based ‘South African’ cuisine that is seen to be rooted in the land. Harkening back to old culinary practices and drawing from their own heritages, Franschhoek’s chefs are foraging, butchering, gathering, growing, fermenting, pickling and cooking over open fires with renewed vigour as they attempt to ground their cuisine, and indeed, themselves, in the soil around them. This thesis considers how, through the culinary repertoire of chefs in Franschhoek, food is constructed as heritage. Within this I look at what heritages are considered desirable, how food’s sensory and symbolic properties are used to their full potential, and who is behind these constructions of culinary heritage. Following on from this, I explore postcolonial and post-apartheid anxieties of place and belonging, as well as desired and emergent identities that are expressed through this culinary heritage.
- Full Text:
- Date Issued: 2017
Impact of ambient air pollution on human health health in the Nelson Mandela Bay Municipality
- Nodwele, Mzoxolo Patrick, Strumpher, J
- Authors: Nodwele, Mzoxolo Patrick , Strumpher, J
- Date: 2017
- Subjects: Environmental health -- South Africa -- Nelson Mandela Bay Municipality Air -- Pollution -- Meteorological aspects -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: http://hdl.handle.net/10948/20142 , vital:29134
- Description: The aim of this study was to assess whether ambient-air pollution contributed negatively to ambient-air quality, and subsequently to human health in the Nelson Mandela Bay Municipality (the study area). A research design that is descriptive and explorative in nature was followed. The research methodology conformed to the following procedure. Firstly, an emission inventory of one hundred and fifty (150) emission sources listed on the data base of the Nelson Mandela Bay Municipality was compiled (“N” and “n” = 150) in a quantitative research approach. Emission data from these sources, together with the relevant meteorological data from the weather stations in the study area (“N” and “n” = 5) were collected and used as input into a geographical information system-software program to quantify the contribution of each emission source to ambient air pollution. The said software program was also used to simulate the dispersion of emissions over the study area. The emission inventory was compiled in consultation with a focus group of experts in the field of air-pollution control in a qualitative-research approach. Secondly, health records of the patients who attend the clinics in the said municipality (“N” and “n” = 49) were assessed for air pollution-related health outcomes. Nineteen (19) of the forty-nine (49) clinics were situated in Sub-District A; fifteen (15) clinics were situated in Sub-District B. The last fifteen of the clinics were situated in Sub-District C, which was also the least-industrialised sub-district. Sub-districts A and B were found to be the most industrialised of the three Sub-districts. Air pollution related health statistics were compiled for the following air-pollution-related health outcomes, namely: lower respiratory tract infections in children under five (5) years of age, as well as pneumonia and asthma in the general population.
- Full Text:
- Date Issued: 2017
- Authors: Nodwele, Mzoxolo Patrick , Strumpher, J
- Date: 2017
- Subjects: Environmental health -- South Africa -- Nelson Mandela Bay Municipality Air -- Pollution -- Meteorological aspects -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: http://hdl.handle.net/10948/20142 , vital:29134
- Description: The aim of this study was to assess whether ambient-air pollution contributed negatively to ambient-air quality, and subsequently to human health in the Nelson Mandela Bay Municipality (the study area). A research design that is descriptive and explorative in nature was followed. The research methodology conformed to the following procedure. Firstly, an emission inventory of one hundred and fifty (150) emission sources listed on the data base of the Nelson Mandela Bay Municipality was compiled (“N” and “n” = 150) in a quantitative research approach. Emission data from these sources, together with the relevant meteorological data from the weather stations in the study area (“N” and “n” = 5) were collected and used as input into a geographical information system-software program to quantify the contribution of each emission source to ambient air pollution. The said software program was also used to simulate the dispersion of emissions over the study area. The emission inventory was compiled in consultation with a focus group of experts in the field of air-pollution control in a qualitative-research approach. Secondly, health records of the patients who attend the clinics in the said municipality (“N” and “n” = 49) were assessed for air pollution-related health outcomes. Nineteen (19) of the forty-nine (49) clinics were situated in Sub-District A; fifteen (15) clinics were situated in Sub-District B. The last fifteen of the clinics were situated in Sub-District C, which was also the least-industrialised sub-district. Sub-districts A and B were found to be the most industrialised of the three Sub-districts. Air pollution related health statistics were compiled for the following air-pollution-related health outcomes, namely: lower respiratory tract infections in children under five (5) years of age, as well as pneumonia and asthma in the general population.
- Full Text:
- Date Issued: 2017
The assembly of p-aryl triazole foldamers into double and other super- helical structures
- Okerio, Jaspher Mosomi, Klumperman, Bert
- Authors: Okerio, Jaspher Mosomi , Klumperman, Bert
- Date: 2017
- Subjects: Supramolecular chemistry Chemistry
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/20548 , vital:29319
- Description: The assembly of poly(para-aryltriazoles) (pPATs), synthesized via Cu(I)-catalysed azide-alkyne cycloaddition, into highly ordered structures is investigated. Firstly, the assembly of the pPATs into double helical structures, as a function of solvent quality and side chain chirality, was studied. The solvents employed (DMF and water) induced changes in van der Waals forces and surface free energy thus influencing the order of the pPATs’ random coils into double helical structures. The observed double helical structures, assembly that was analyzed using ultraviolet-visible (UV-Vis) specroscopy, circular dichroism (CD) spectroscopy, scanning transmission electron microscopy (STEM) and confocal fluorescence imaging microscopy upon addition of 0 – 80% water into the pPATs’ random coils, exhibit stable morphologies stabilized by π-π stacking and hydrogen bonding at 80% water content. The pPATs exist as random coils at 10% water in DMF. At 40% water in DMF, the pPATs’ strands were observed to exist in a side-by-side orientation. The adjacent strands, side by side, intertwine into double helices and eventually stack as the amount of water is increased to 80%. The obtained results present a facile strategy for the fabrication of polymeric double helical structures with stable morphologies. The average diameter of the resulting one-handed and opposite handed double helical structures is about 200 nm, a pitch of 170 nm and an overall length of several micrometres. The assembly of the pPATs into ordered structures in the presence of a neutral organic template and anions was also assessed. Hydrophobic poly(γ-benzyl-L-glutamate) (PBLG) template was introduced at various concentrations and transition region of the pPATs (10% water in DMF). At this stage the PBLG template is CD inactive. The template modified the assembly mechanism to afford structures, which cannot be achieved in its absence. It disallows the organization of the pPATs into double helical structures. The pPATs strands thread around the template and stack into long tubules of up to 10 microns and irregular diameter. The irregular diameter is attributed to uneven threading of pPATs strands around the template at some sections. The sensitivity and binding ability of the pPAT system to halide ions such as F-, Cl- and Br- , which involves re-organization of the aryl-triazole bonds, is explored using NMR and UV-Vis and CD spectroscopies. Br- which induces the highest shift of the triazole C-H proton signal in the NMR analysis also shows the highest dynamic quenching of the pPATs’ UV-Vis and CD spectra. The UV-Vis and CD signals are linearly dependent on the concentration of the anions. This confirms non-aggregation assembly in the presence of anions. Conclusively, the pPATs interact with the bromide anion in aqueous solution, which consequently prevents the aggregation of the foldamers. Finally, using PATs with different amounts of chiral side chains, co-operativity among side chains that leads to transfer, propagation and amplification of chirality is confirmed. A non-linear dependence of the CD signal on the amount of chiral side chains was observed. Chiral amplification was observed as low as 1% of the chiral side chains. However, approximately 20% of the chiral side chains are needed to obtain half the intensity of the cotton effect exhibited by the homochiral pPAT.
- Full Text:
- Date Issued: 2017
- Authors: Okerio, Jaspher Mosomi , Klumperman, Bert
- Date: 2017
- Subjects: Supramolecular chemistry Chemistry
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/20548 , vital:29319
- Description: The assembly of poly(para-aryltriazoles) (pPATs), synthesized via Cu(I)-catalysed azide-alkyne cycloaddition, into highly ordered structures is investigated. Firstly, the assembly of the pPATs into double helical structures, as a function of solvent quality and side chain chirality, was studied. The solvents employed (DMF and water) induced changes in van der Waals forces and surface free energy thus influencing the order of the pPATs’ random coils into double helical structures. The observed double helical structures, assembly that was analyzed using ultraviolet-visible (UV-Vis) specroscopy, circular dichroism (CD) spectroscopy, scanning transmission electron microscopy (STEM) and confocal fluorescence imaging microscopy upon addition of 0 – 80% water into the pPATs’ random coils, exhibit stable morphologies stabilized by π-π stacking and hydrogen bonding at 80% water content. The pPATs exist as random coils at 10% water in DMF. At 40% water in DMF, the pPATs’ strands were observed to exist in a side-by-side orientation. The adjacent strands, side by side, intertwine into double helices and eventually stack as the amount of water is increased to 80%. The obtained results present a facile strategy for the fabrication of polymeric double helical structures with stable morphologies. The average diameter of the resulting one-handed and opposite handed double helical structures is about 200 nm, a pitch of 170 nm and an overall length of several micrometres. The assembly of the pPATs into ordered structures in the presence of a neutral organic template and anions was also assessed. Hydrophobic poly(γ-benzyl-L-glutamate) (PBLG) template was introduced at various concentrations and transition region of the pPATs (10% water in DMF). At this stage the PBLG template is CD inactive. The template modified the assembly mechanism to afford structures, which cannot be achieved in its absence. It disallows the organization of the pPATs into double helical structures. The pPATs strands thread around the template and stack into long tubules of up to 10 microns and irregular diameter. The irregular diameter is attributed to uneven threading of pPATs strands around the template at some sections. The sensitivity and binding ability of the pPAT system to halide ions such as F-, Cl- and Br- , which involves re-organization of the aryl-triazole bonds, is explored using NMR and UV-Vis and CD spectroscopies. Br- which induces the highest shift of the triazole C-H proton signal in the NMR analysis also shows the highest dynamic quenching of the pPATs’ UV-Vis and CD spectra. The UV-Vis and CD signals are linearly dependent on the concentration of the anions. This confirms non-aggregation assembly in the presence of anions. Conclusively, the pPATs interact with the bromide anion in aqueous solution, which consequently prevents the aggregation of the foldamers. Finally, using PATs with different amounts of chiral side chains, co-operativity among side chains that leads to transfer, propagation and amplification of chirality is confirmed. A non-linear dependence of the CD signal on the amount of chiral side chains was observed. Chiral amplification was observed as low as 1% of the chiral side chains. However, approximately 20% of the chiral side chains are needed to obtain half the intensity of the cotton effect exhibited by the homochiral pPAT.
- Full Text:
- Date Issued: 2017
The impact of the farmer field school approach on small-scale vegetable farmers' knowledge, agency and production in Alice, Eastern Cape
- Authors: Apleni, Asanda
- Date: 2017
- Subjects: Agricultural extension work -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/8187 , vital:31873
- Description: This study investigates the impact of the Farmer Field School approach on the knowledge, agency and production of small-scale farmers. Farmer Field Schools were devised in the 1980s by the Food and Agriculture Organization as a form of adult education in agriculture. It is a group-based approach in which a facilitator meets with farmers on a regular basis and sets in motion a process by which farmers ‘learn how to learn’, both from themselves and from one another. However, it remains an open question whether the Farmer Field School approach could be a solution to South Africa’s abiding problem of weak agricultural extension. Early in 2015, the University of Fort Hare and the Nkonkobe Farmers’ Association initiated a number of study groups in the Alice area, based largely on Farmer Field School principles. The main objective of the study was to assess the impact of the Farmer Field School approach on small-scale farmers’ knowledge, agency and production, focusing on home gardeners. The study was conducted in the Raymond Mhlaba Local Municipality in Alice of the Eastern Cape Province of South Africa. The research consisted of a survey of all the study group participants involved with home gardens, including some who joined the groups in 2015 but left in 2016. Both cross-sectional and longitudinal designs were used. Findings from this study have shown how participation in the study groups modelled on the FFS approach can improve the knowledge and skills of home gardeners, while also enabling them to produce significantly larger quantities of vegetables, and even a marketable surplus, albeit from a small base. In order to make more people to join, more incentives should be made available. Such incentives should be made available only to “kick start” the FFS study groups and take heed in prevention of dependence.
- Full Text:
- Date Issued: 2017
- Authors: Apleni, Asanda
- Date: 2017
- Subjects: Agricultural extension work -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/8187 , vital:31873
- Description: This study investigates the impact of the Farmer Field School approach on the knowledge, agency and production of small-scale farmers. Farmer Field Schools were devised in the 1980s by the Food and Agriculture Organization as a form of adult education in agriculture. It is a group-based approach in which a facilitator meets with farmers on a regular basis and sets in motion a process by which farmers ‘learn how to learn’, both from themselves and from one another. However, it remains an open question whether the Farmer Field School approach could be a solution to South Africa’s abiding problem of weak agricultural extension. Early in 2015, the University of Fort Hare and the Nkonkobe Farmers’ Association initiated a number of study groups in the Alice area, based largely on Farmer Field School principles. The main objective of the study was to assess the impact of the Farmer Field School approach on small-scale farmers’ knowledge, agency and production, focusing on home gardeners. The study was conducted in the Raymond Mhlaba Local Municipality in Alice of the Eastern Cape Province of South Africa. The research consisted of a survey of all the study group participants involved with home gardens, including some who joined the groups in 2015 but left in 2016. Both cross-sectional and longitudinal designs were used. Findings from this study have shown how participation in the study groups modelled on the FFS approach can improve the knowledge and skills of home gardeners, while also enabling them to produce significantly larger quantities of vegetables, and even a marketable surplus, albeit from a small base. In order to make more people to join, more incentives should be made available. Such incentives should be made available only to “kick start” the FFS study groups and take heed in prevention of dependence.
- Full Text:
- Date Issued: 2017
Use of fungicides for the management of Uromycladium acaciae in Acacia mearnsii plantations, South Africa
- Authors: Payn, Richard Guy
- Date: 2017
- Subjects: Fungicides -- South Africa Acacia mearnsii -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/20500 , vital:29299
- Description: South Africa has ca. 110 000 ha planted to Acacia mearnsii with 85% of the revenue from the species obtained from the timber, and 15% from the bark. Since its detection in 2013, wattle rust (recently identified as Uromycladium acaciae) has spread throughout the black wattle plantation area in KwaZulu-Natal, and from 2015 it was recorded in southern Mpumalanga. The pathogen affects trees of all age classes, causing a reduction in growth, as well as mortality with severe infection. Research has been initiated to determine a number of strategies for the management of the pathogen. These strategies include understanding wattle rust biology and epidemiology, planting tolerant or resistant black wattle, the testing and use of fungicide for management, and remote sensing and process based modelling to assess black wattle loss and high risk areas. These, with the outcomes from this research, will be combined into an overall Integrated Pest Management plan. Of the various strategies, the management of wattle rust with the use of fungicides is important, not only as it will have the potential to reduce the negative impacts of wattle rust, but it will also provide an interim solution until the other research areas provide alternative solutions. To address the current lack of fungicides available (and knowledge around their application) for the management of wattle rust, a series of trials were implemented to screen fungicides for their potential use, extend periods between the re-application of fungicide (if possible), the linking of symptoms to Disease Expression to aid with the timing of application, and the cost:benefits associated with fungicide use. Prior to the initiation of research into managing wattle rust, no fungicides were registered in South Africa for the control of wattle rust. In October / November 2014, three A. mearnsii trials were initiated in the KwaZulu-Natal Midlands and SE Mpumulanga where fungicides were tested at varying rates for the control of wattle rust. Wattle rust had a significant and negative impact on tree growth, irrespective of site and/or previous infection. All fungicides tested and at all the rates applied, proved effective for control. For the most effective control of wattle rust, fungicides should be applied as a preventative, rather than corrective measure. In October 2015 a trial was initiated in southern KwaZulu-Natal to determine the effectiveness of varied application schedules and adjuvants of fungicides for the management of wattle rust. Two trials had initially been initiated but one had to be abandoned due to browsing damage. Wattle rust had a significant impact upon Groundline Diameter and Biomass Index but not Height. All of the adjuvants used and application schedules were effective in managing wattle rust. The most effective fungicide application used will therefore be based upon cost and in a manner that will reduce the likelihood of acquired resistance developing in wattle rust populations. The timing of fungicide application is necessary for optimal use of these fungicides. Fungicide applications could potentially be linked to the emergence of different wattle rust symptoms to optimize fungicide use. Wattle rust symptoms were analysed from the untreated control plots of two trials, one in the KwaZulu-Natal midlands and one in southern KwaZulu-Natal, to determine whether wattle rust Disease expression could be linked to black wattle tree growth. Regression trees were used for the analysis, as linear and multiple regression techniques would be unsuitable for the data. Regression trees were overfitted and attempts at testing the robustness of the model by cross-validation were unsuccessful. No individual symptom emerged as a significant predictor of tree growth, indicating that fungicide application should take place with the onset of any of the wattle rust symptoms tested. The results from six trials testing the use of fungicides for managing wattle rust were compared to assess costs associated with fungicide use. Relative growth for Biomass Index was compared to untreated controls to obtain comparisons within and between sites. Costs versus benefit were compared using a two-way table to determine the most optimum treatment. The largest portion of treatment costs was attributed to the cost of fungicide. No single treatment was found to be optimal for the recommended rate of application. The use of adjuvants increased the cost of treatment, without additional benefit in growth. Control of wattle rust is beneficial, although costly if over-applied. Rotation-end data is required to determine whether fungicide use is economical for managing wattle rust over an extended period of time. As a limited number of fungicides, from a limited number of fungicide groups were screened, the screening of additional fungicides from different fungicide groups will provide an additional selection of fungicides. If these are used in combination or alternation, the likelihood of acquired resistance developing among wattle rust populations will be reduced. Linking fungicide applications with wattle rust epidemiological and climatic data will aid in optimal use of fungicides, by timing applications to coincide with epidemiological and climatic cues. Rotation end research comparing final yield on fungicide treated versus untreated black wattle is needed to fully understand the economics of fungicide use. This will also aid in the understanding of the impact of wattle rust on tree age.
- Full Text:
- Date Issued: 2017
- Authors: Payn, Richard Guy
- Date: 2017
- Subjects: Fungicides -- South Africa Acacia mearnsii -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/20500 , vital:29299
- Description: South Africa has ca. 110 000 ha planted to Acacia mearnsii with 85% of the revenue from the species obtained from the timber, and 15% from the bark. Since its detection in 2013, wattle rust (recently identified as Uromycladium acaciae) has spread throughout the black wattle plantation area in KwaZulu-Natal, and from 2015 it was recorded in southern Mpumalanga. The pathogen affects trees of all age classes, causing a reduction in growth, as well as mortality with severe infection. Research has been initiated to determine a number of strategies for the management of the pathogen. These strategies include understanding wattle rust biology and epidemiology, planting tolerant or resistant black wattle, the testing and use of fungicide for management, and remote sensing and process based modelling to assess black wattle loss and high risk areas. These, with the outcomes from this research, will be combined into an overall Integrated Pest Management plan. Of the various strategies, the management of wattle rust with the use of fungicides is important, not only as it will have the potential to reduce the negative impacts of wattle rust, but it will also provide an interim solution until the other research areas provide alternative solutions. To address the current lack of fungicides available (and knowledge around their application) for the management of wattle rust, a series of trials were implemented to screen fungicides for their potential use, extend periods between the re-application of fungicide (if possible), the linking of symptoms to Disease Expression to aid with the timing of application, and the cost:benefits associated with fungicide use. Prior to the initiation of research into managing wattle rust, no fungicides were registered in South Africa for the control of wattle rust. In October / November 2014, three A. mearnsii trials were initiated in the KwaZulu-Natal Midlands and SE Mpumulanga where fungicides were tested at varying rates for the control of wattle rust. Wattle rust had a significant and negative impact on tree growth, irrespective of site and/or previous infection. All fungicides tested and at all the rates applied, proved effective for control. For the most effective control of wattle rust, fungicides should be applied as a preventative, rather than corrective measure. In October 2015 a trial was initiated in southern KwaZulu-Natal to determine the effectiveness of varied application schedules and adjuvants of fungicides for the management of wattle rust. Two trials had initially been initiated but one had to be abandoned due to browsing damage. Wattle rust had a significant impact upon Groundline Diameter and Biomass Index but not Height. All of the adjuvants used and application schedules were effective in managing wattle rust. The most effective fungicide application used will therefore be based upon cost and in a manner that will reduce the likelihood of acquired resistance developing in wattle rust populations. The timing of fungicide application is necessary for optimal use of these fungicides. Fungicide applications could potentially be linked to the emergence of different wattle rust symptoms to optimize fungicide use. Wattle rust symptoms were analysed from the untreated control plots of two trials, one in the KwaZulu-Natal midlands and one in southern KwaZulu-Natal, to determine whether wattle rust Disease expression could be linked to black wattle tree growth. Regression trees were used for the analysis, as linear and multiple regression techniques would be unsuitable for the data. Regression trees were overfitted and attempts at testing the robustness of the model by cross-validation were unsuccessful. No individual symptom emerged as a significant predictor of tree growth, indicating that fungicide application should take place with the onset of any of the wattle rust symptoms tested. The results from six trials testing the use of fungicides for managing wattle rust were compared to assess costs associated with fungicide use. Relative growth for Biomass Index was compared to untreated controls to obtain comparisons within and between sites. Costs versus benefit were compared using a two-way table to determine the most optimum treatment. The largest portion of treatment costs was attributed to the cost of fungicide. No single treatment was found to be optimal for the recommended rate of application. The use of adjuvants increased the cost of treatment, without additional benefit in growth. Control of wattle rust is beneficial, although costly if over-applied. Rotation-end data is required to determine whether fungicide use is economical for managing wattle rust over an extended period of time. As a limited number of fungicides, from a limited number of fungicide groups were screened, the screening of additional fungicides from different fungicide groups will provide an additional selection of fungicides. If these are used in combination or alternation, the likelihood of acquired resistance developing among wattle rust populations will be reduced. Linking fungicide applications with wattle rust epidemiological and climatic data will aid in optimal use of fungicides, by timing applications to coincide with epidemiological and climatic cues. Rotation end research comparing final yield on fungicide treated versus untreated black wattle is needed to fully understand the economics of fungicide use. This will also aid in the understanding of the impact of wattle rust on tree age.
- Full Text:
- Date Issued: 2017
The challenges of professional women in a male dominated South African construction industry
- Authors: Tyindyana. Xolile
- Date: 20XX
- Subjects: Construction industry -- Women -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44557 , vital:38129
- Description: The opinions that South African construction industry is the most untransformed sector, highly gender active and men have difficulty in accepting women in the construction industry, hindered the development of the South African economy. The improved number of professional women entering the statuses of this male dominance is noticeable, but the percentage of men still speak volume. Hence, there are imbalances that are correspondent to discrimination trials. This study explore challenges faced by professional women in the construction industry of South Africa, in the Eastern Cape. The study embraced exploratory research design in order to formulate preliminary investigations based on relatively unknown areas of professional women in construction industry. Therefore, this qualitative method incorporated interpretivism as its research philosophy, with the motive that this paradigm succeeds individual ontology that does not perceive as objective and independent. The purposeful sampling technique deployed in identifying the research participants, coupled by ten (10) women rendering professional services in the construction industry. Data collected was analysed thematically, which gave rise to presented themes, deliberated and construed in headings framed from research objectives. The study revealed that professional women still trapped between resisting, accommodating masculine politics and femininity distinctions regardless of evolutions. Most participants attested to the gender imbalances that propagates marginalisation, which is in line with the revelations. The study also suggest that men reject professionalism identity in the context of women. Other key challenges were not limited to backgrounds of the industry, outlook and progression that necessitated women taking executive positions. Further still, participants are aware of flouted construction industry policies and the strategies to use to by their counterparts to obscure them. Hence, the study suggested monitoring and review of policies in place by the policy makers. A recommended that similar research be carried out in South Africa, particularly provinces, as a literature gap has been identified. These recommended studies could enhance professional women, men and policy makers in profound consideration of the challenges faced by professional women in the construction industry.
- Full Text:
- Date Issued: 20XX
- Authors: Tyindyana. Xolile
- Date: 20XX
- Subjects: Construction industry -- Women -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44557 , vital:38129
- Description: The opinions that South African construction industry is the most untransformed sector, highly gender active and men have difficulty in accepting women in the construction industry, hindered the development of the South African economy. The improved number of professional women entering the statuses of this male dominance is noticeable, but the percentage of men still speak volume. Hence, there are imbalances that are correspondent to discrimination trials. This study explore challenges faced by professional women in the construction industry of South Africa, in the Eastern Cape. The study embraced exploratory research design in order to formulate preliminary investigations based on relatively unknown areas of professional women in construction industry. Therefore, this qualitative method incorporated interpretivism as its research philosophy, with the motive that this paradigm succeeds individual ontology that does not perceive as objective and independent. The purposeful sampling technique deployed in identifying the research participants, coupled by ten (10) women rendering professional services in the construction industry. Data collected was analysed thematically, which gave rise to presented themes, deliberated and construed in headings framed from research objectives. The study revealed that professional women still trapped between resisting, accommodating masculine politics and femininity distinctions regardless of evolutions. Most participants attested to the gender imbalances that propagates marginalisation, which is in line with the revelations. The study also suggest that men reject professionalism identity in the context of women. Other key challenges were not limited to backgrounds of the industry, outlook and progression that necessitated women taking executive positions. Further still, participants are aware of flouted construction industry policies and the strategies to use to by their counterparts to obscure them. Hence, the study suggested monitoring and review of policies in place by the policy makers. A recommended that similar research be carried out in South Africa, particularly provinces, as a literature gap has been identified. These recommended studies could enhance professional women, men and policy makers in profound consideration of the challenges faced by professional women in the construction industry.
- Full Text:
- Date Issued: 20XX
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