Retailers’ food waste management: challenges and potential for action in Port Elizabeth
- Authors: Đào, Thị Anh Thư
- Date: 2019
- Subjects: Food industry and trade -- Waste minimization , Food industry and trade -- Waste disposal Refuse and refuse disposal
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/39359 , vital:35220
- Description: Food waste management within retailers is seen as an important solution to assist retailers in effectively managing food waste, and by doing so improving food security while limiting negative ecological consequences. Given the lack of research attention focusing on the importance of managing food waste among South African food retailers, and in particular the Eastern Cape, the primary objective of this research was to investigate retailers‟ food waste management in Port Elizabeth. Primary data was collected by conducting interviews with representatives of Port-Elizabeth-based participating stores and their individual Head Offices. This treatise reports on the findings and the conclusions drawn.
- Full Text:
- Date Issued: 2019
- Authors: Đào, Thị Anh Thư
- Date: 2019
- Subjects: Food industry and trade -- Waste minimization , Food industry and trade -- Waste disposal Refuse and refuse disposal
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/39359 , vital:35220
- Description: Food waste management within retailers is seen as an important solution to assist retailers in effectively managing food waste, and by doing so improving food security while limiting negative ecological consequences. Given the lack of research attention focusing on the importance of managing food waste among South African food retailers, and in particular the Eastern Cape, the primary objective of this research was to investigate retailers‟ food waste management in Port Elizabeth. Primary data was collected by conducting interviews with representatives of Port-Elizabeth-based participating stores and their individual Head Offices. This treatise reports on the findings and the conclusions drawn.
- Full Text:
- Date Issued: 2019
Assessing flood vulnerability in the Nelson Mandela Bay Metro
- Authors: Zuze, Hillary
- Date: 2019
- Subjects: Floods -- South Africa -- Nelson Mandela Bay Municipality , Natural disasters Hazardous geographic environments Hazardous geographic environments -- Risk assessment , Climatic changes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44224 , vital:37135
- Description: Floods are the most frequent amongst all global natural disasters at present, causing problems such as bridge collapses, fatalities, building damages and traffic delays. Between 1995 and 2015, there were approximately 3062 global flood disasters which accounted for 56% of all declared natural disasters and these affected 2.3 billion people (almost a third of the world’s population at the time) (EMDAT, 2015). The cost of damages for this period incurred for buildings and other infrastructure was at an all-time high of R23.69 (US$1.891) trillion. It is postulated through various studies that the number of urban flood events reported is increasing significantly in comparison to the previous decades (Armah et al., 2010; Lóczy, 2013; Leaning and Guha-Sapir, 2013; EMDAT, 2015; Tanoue et al., 2016; Rogger et al., 2017). Some research has also noted an increase in the number of floods per year, which has ascended to an average of 171 in this decade, from an annual average of 127 in the previous one (Dozier, 2013; Guha Sapir et al., 2016). Sources such as the Centre of Research and Epidemiological Disasters (Guha Sapir et al., 2016) recorded that from 1995 to 2015, globally, millions of homes were vulnerable to weather-related disasters, along with 130,000 health and education facilities. During this period, urban floods accounted for 98% of houses damaged and 99.9% of education and health facilities demolished by a weather-related disaster (Davies, 2017). Flooding is particularly harmful in terms of fatalities in developing countries due to inadequate flood protection and mitigation measures (Di Baldassarre et al., 2010; Dozier, 2013). Some studies attribute the high fatalities in developing countries to the inadequate disaster management strategies implemented to counter the impacts of urban flooding (Egbinola et al., 2015; Pazzi et al., 2016; Mavhura et al., 2017). Other authors have attributed the high fatalities to the sheer number of people residing in areas prone to flooding, which has been the knock-on effect of rapidly expanding cities, overwhelmed government agencies, and a pre-existing political and social system that promotes marginalisation (Collins, 2008; Aboagye, 2012). The occupation of flood-prone areas by settlements, which is a common feature in developing countries, is the major contributor to the fatalities as it involves a degree of risk. Risk is exposure to an undesired event, in this case flooding, and contributes directly to differing levels of vulnerability (Samuels, 2018). Communities have differing perceptions of flood vulnerability because of a combination of factors. These include the magnitude of the flood experienced, the number of people or the value of assets potentially affected by flooding due to location, and the lack of socioeconomic capacity to do anything to alter their vulnerability to a disaster (Hall et al., 2005; Adger, 2006; Birkmann et al., 2013; Rogger et al., 2017). Some communities acknowledge that there are people residing in flood prone areas and take measures to reduce or eliminate the risk through social, political and economic networks. In other cases, communities are able to identify their exposure to flooding but do not have the capacity to reduce the effects (Bouchard et al., 2007; Agbaoye, 2012; Musungu et al., 2012; Siyongwana, Heijne, and Tele et al., 20155).
- Full Text:
- Date Issued: 2019
- Authors: Zuze, Hillary
- Date: 2019
- Subjects: Floods -- South Africa -- Nelson Mandela Bay Municipality , Natural disasters Hazardous geographic environments Hazardous geographic environments -- Risk assessment , Climatic changes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44224 , vital:37135
- Description: Floods are the most frequent amongst all global natural disasters at present, causing problems such as bridge collapses, fatalities, building damages and traffic delays. Between 1995 and 2015, there were approximately 3062 global flood disasters which accounted for 56% of all declared natural disasters and these affected 2.3 billion people (almost a third of the world’s population at the time) (EMDAT, 2015). The cost of damages for this period incurred for buildings and other infrastructure was at an all-time high of R23.69 (US$1.891) trillion. It is postulated through various studies that the number of urban flood events reported is increasing significantly in comparison to the previous decades (Armah et al., 2010; Lóczy, 2013; Leaning and Guha-Sapir, 2013; EMDAT, 2015; Tanoue et al., 2016; Rogger et al., 2017). Some research has also noted an increase in the number of floods per year, which has ascended to an average of 171 in this decade, from an annual average of 127 in the previous one (Dozier, 2013; Guha Sapir et al., 2016). Sources such as the Centre of Research and Epidemiological Disasters (Guha Sapir et al., 2016) recorded that from 1995 to 2015, globally, millions of homes were vulnerable to weather-related disasters, along with 130,000 health and education facilities. During this period, urban floods accounted for 98% of houses damaged and 99.9% of education and health facilities demolished by a weather-related disaster (Davies, 2017). Flooding is particularly harmful in terms of fatalities in developing countries due to inadequate flood protection and mitigation measures (Di Baldassarre et al., 2010; Dozier, 2013). Some studies attribute the high fatalities in developing countries to the inadequate disaster management strategies implemented to counter the impacts of urban flooding (Egbinola et al., 2015; Pazzi et al., 2016; Mavhura et al., 2017). Other authors have attributed the high fatalities to the sheer number of people residing in areas prone to flooding, which has been the knock-on effect of rapidly expanding cities, overwhelmed government agencies, and a pre-existing political and social system that promotes marginalisation (Collins, 2008; Aboagye, 2012). The occupation of flood-prone areas by settlements, which is a common feature in developing countries, is the major contributor to the fatalities as it involves a degree of risk. Risk is exposure to an undesired event, in this case flooding, and contributes directly to differing levels of vulnerability (Samuels, 2018). Communities have differing perceptions of flood vulnerability because of a combination of factors. These include the magnitude of the flood experienced, the number of people or the value of assets potentially affected by flooding due to location, and the lack of socioeconomic capacity to do anything to alter their vulnerability to a disaster (Hall et al., 2005; Adger, 2006; Birkmann et al., 2013; Rogger et al., 2017). Some communities acknowledge that there are people residing in flood prone areas and take measures to reduce or eliminate the risk through social, political and economic networks. In other cases, communities are able to identify their exposure to flooding but do not have the capacity to reduce the effects (Bouchard et al., 2007; Agbaoye, 2012; Musungu et al., 2012; Siyongwana, Heijne, and Tele et al., 20155).
- Full Text:
- Date Issued: 2019
Analysis of the pre- to post- apartheid language in education policies: an investigation for multilingualism
- Authors: Zumani, Nobesutu Faith
- Date: 2019
- Subjects: Multilingual education -- South Africa , Native language and education -- South Africa Language policy -- South Africa African languages -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/44235 , vital:37140
- Description: The 1997 language policy in basic education promotes multilingualism in basic, education where there is under-utilisation of African languages. The main aim of this study is to investigate the reason for the under-utilisation of African languages in basic education. Transitional bilingual education is practised (TBE) instead of developmental maintenance bilingual education (MBE). The pre and post-apartheid language- in-education policies, including the Constitution, were collected, analysed and interpreted to find out why these languages are not used for education. It was discovered that the legacy of the previous policies has had an influence on the present policy. Also, the escape clauses on the present policy, such as “practicably reasonable,” and “choose,” have an impact on non-implementation of the post-apartheid language policy. The researcher recommends the development of an implementation plan and the revision of powers for SGBs to choose languages for their schools.
- Full Text:
- Date Issued: 2019
- Authors: Zumani, Nobesutu Faith
- Date: 2019
- Subjects: Multilingual education -- South Africa , Native language and education -- South Africa Language policy -- South Africa African languages -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/44235 , vital:37140
- Description: The 1997 language policy in basic education promotes multilingualism in basic, education where there is under-utilisation of African languages. The main aim of this study is to investigate the reason for the under-utilisation of African languages in basic education. Transitional bilingual education is practised (TBE) instead of developmental maintenance bilingual education (MBE). The pre and post-apartheid language- in-education policies, including the Constitution, were collected, analysed and interpreted to find out why these languages are not used for education. It was discovered that the legacy of the previous policies has had an influence on the present policy. Also, the escape clauses on the present policy, such as “practicably reasonable,” and “choose,” have an impact on non-implementation of the post-apartheid language policy. The researcher recommends the development of an implementation plan and the revision of powers for SGBs to choose languages for their schools.
- Full Text:
- Date Issued: 2019
A framework for the adoption and optimization of technology within Coega Business Center
- Authors: Zulu, Zwelibanzi
- Date: 2019
- Subjects: Technological innovations
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/40206 , vital:35982
- Description: The special economic zone sector plays an important role in economies across the African continent. The mission of the COEGA Development Corporation (CDC) is to provide a competitive investment location supported by value added business services that ultimately enable socio-economic development. The Entity is mandated to develop and operate the Coega Industrial Development Zone (IDZ), which is located adjacent to the modern deep-water port facility, Port of Ngqura, developed and owned by Transnet National Ports Authority. The CDC attracts investors from all over the world and in different business sectors through investment promotion as well as Foreign Direct Investment (FDI). The Coega Development Corporation whose core mandate is to attract Foreign Direct Investments (FDI) struggles to adopt innovative information technologies expeditiously, which is problem for the organization. The organization currently has Information Technology (IT) systems and applications such as the Enterprise Resource Planning (ERP) and other IT systems that have been used, but there has been failure in maximizing the IT capabilities implemented internally. Employees are not understanding and seeing the benefit of using IT systems and there is no integration of systems within the CDC. This paper aims to acquire underlying knowledge of how IT is adopted in private sector organizations and further explore what factors impact its adoption. The main objective of this study was to propose a framework for adopting an optimizing technology usage within the Coega development Corporation to enhance productivity and efficiency. The study focused on the effect of components such as top management involvement, management styles, innovative organization culture, end user training, innovation diffusion, championship and knowledge management. In conclusion, this study showed the importance of optimizing technology, within the Coega Business Center. The author presented and made Recommendations on how to integrate the independent variables identified can influence the optimization of technology. v The proposed conceptual IT innovation adoption and optimization framework is a contribution to theory. This framework presents a detailed list of internal factors that influence IT adoption and optimization in government sector organizations such as the Coega Development Corporation. The author inferences that each factor within this framework signifies its importance and must be considered by organizations while adopting innovation technologies.
- Full Text:
- Date Issued: 2019
- Authors: Zulu, Zwelibanzi
- Date: 2019
- Subjects: Technological innovations
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/40206 , vital:35982
- Description: The special economic zone sector plays an important role in economies across the African continent. The mission of the COEGA Development Corporation (CDC) is to provide a competitive investment location supported by value added business services that ultimately enable socio-economic development. The Entity is mandated to develop and operate the Coega Industrial Development Zone (IDZ), which is located adjacent to the modern deep-water port facility, Port of Ngqura, developed and owned by Transnet National Ports Authority. The CDC attracts investors from all over the world and in different business sectors through investment promotion as well as Foreign Direct Investment (FDI). The Coega Development Corporation whose core mandate is to attract Foreign Direct Investments (FDI) struggles to adopt innovative information technologies expeditiously, which is problem for the organization. The organization currently has Information Technology (IT) systems and applications such as the Enterprise Resource Planning (ERP) and other IT systems that have been used, but there has been failure in maximizing the IT capabilities implemented internally. Employees are not understanding and seeing the benefit of using IT systems and there is no integration of systems within the CDC. This paper aims to acquire underlying knowledge of how IT is adopted in private sector organizations and further explore what factors impact its adoption. The main objective of this study was to propose a framework for adopting an optimizing technology usage within the Coega development Corporation to enhance productivity and efficiency. The study focused on the effect of components such as top management involvement, management styles, innovative organization culture, end user training, innovation diffusion, championship and knowledge management. In conclusion, this study showed the importance of optimizing technology, within the Coega Business Center. The author presented and made Recommendations on how to integrate the independent variables identified can influence the optimization of technology. v The proposed conceptual IT innovation adoption and optimization framework is a contribution to theory. This framework presents a detailed list of internal factors that influence IT adoption and optimization in government sector organizations such as the Coega Development Corporation. The author inferences that each factor within this framework signifies its importance and must be considered by organizations while adopting innovation technologies.
- Full Text:
- Date Issued: 2019
Investigating COBIT 5 implementation in the public TVET college sector in South Africa
- Authors: Zulu, Motlalepule Jacobeth
- Date: 2019
- Subjects: Information technology -- Management , Computer security Education, Higher -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44246 , vital:37142
- Description: The purpose of this study was to investigate whether the COBIT 5 ICT governance framework has been implemented successfully in the public TVET sector. The study clarifies that ICT governance is not only about satisfying audit requirements; the core of ICT governance based on Cobit 5 is alignment between business and ICT. The study proposed a theoretical framework whereby the perceived benefits of implementing COBIT 5 in the public TVET college sector in South Africa was the dependent variable. The proposed independent variables were namely; Training, Adoption, Leadership, Value in IT Investment and Risk Management. The study infers that the board and/or council within an organisation need to lead the process in relation to the governance of ICT. Moreover, the study takes cognisance that ICT is a strategic enabler and thus the board or council ought to play their role of oversight, monitoring and ensuring optimal utilisation of IT resources. The study challenges the perception that IT is a mere operational functional and deduces that top management ought to incorporate IT when formulating and/or reviewing the business strategy. IT ought to be included in any strategic related activity in the organisation. IT should not be left out of the boardroom if management envisage to derive value from ICT investment.
- Full Text:
- Date Issued: 2019
- Authors: Zulu, Motlalepule Jacobeth
- Date: 2019
- Subjects: Information technology -- Management , Computer security Education, Higher -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44246 , vital:37142
- Description: The purpose of this study was to investigate whether the COBIT 5 ICT governance framework has been implemented successfully in the public TVET sector. The study clarifies that ICT governance is not only about satisfying audit requirements; the core of ICT governance based on Cobit 5 is alignment between business and ICT. The study proposed a theoretical framework whereby the perceived benefits of implementing COBIT 5 in the public TVET college sector in South Africa was the dependent variable. The proposed independent variables were namely; Training, Adoption, Leadership, Value in IT Investment and Risk Management. The study infers that the board and/or council within an organisation need to lead the process in relation to the governance of ICT. Moreover, the study takes cognisance that ICT is a strategic enabler and thus the board or council ought to play their role of oversight, monitoring and ensuring optimal utilisation of IT resources. The study challenges the perception that IT is a mere operational functional and deduces that top management ought to incorporate IT when formulating and/or reviewing the business strategy. IT ought to be included in any strategic related activity in the organisation. IT should not be left out of the boardroom if management envisage to derive value from ICT investment.
- Full Text:
- Date Issued: 2019
Timing of the incidence of tax in suspensive sale agreements and agreements with suspensive conditions
- Authors: Zondi, Bonginkosi
- Date: 2019
- Subjects: Tax administration and procedure -- South Africa , Taxation -- Law and legislation -- South Africa Taxation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/44269 , vital:37144
- Description: This study critically examines suspensive sale agreements and agreements subject to suspensive conditions in the South African taxation system. It examines challenges associated with the application of the disposal rules in the context of the Income Tax Act No. 58 of 1962, which includes capital gains tax, and Value-Added Tax Act No. 89 of 1991 relating to these types of agreements. The study also looks at those aspects in which these agreements generally differ and concur. As one of its areas of focus, the study inter alia makes a comparison of the South African approach to the timing of the tax incidence under these agreements, to the approaches adopted by other countries, namely Canada, Zimbabwe and the United States of America (USA).
- Full Text:
- Date Issued: 2019
- Authors: Zondi, Bonginkosi
- Date: 2019
- Subjects: Tax administration and procedure -- South Africa , Taxation -- Law and legislation -- South Africa Taxation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/44269 , vital:37144
- Description: This study critically examines suspensive sale agreements and agreements subject to suspensive conditions in the South African taxation system. It examines challenges associated with the application of the disposal rules in the context of the Income Tax Act No. 58 of 1962, which includes capital gains tax, and Value-Added Tax Act No. 89 of 1991 relating to these types of agreements. The study also looks at those aspects in which these agreements generally differ and concur. As one of its areas of focus, the study inter alia makes a comparison of the South African approach to the timing of the tax incidence under these agreements, to the approaches adopted by other countries, namely Canada, Zimbabwe and the United States of America (USA).
- Full Text:
- Date Issued: 2019
Machine learning methods for calibrating radio interferometric data
- Authors: Zitha, Simphiwe Nhlanhla
- Date: 2019
- Subjects: Calibration , Radio astronomy -- Data processing , Radio astronomy -- South Africa , Karoo Array Telescope (South Africa) , Radio telescopes -- South Africa , Common Astronomy Software Application (Computer software)
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/97096 , vital:31398
- Description: The applications of machine learning have created an opportunity to deal with complex problems currently encountered in radio astronomy data processing. Calibration is one of the most important data processing steps required to produce high dynamic range images. This process involves the determination of calibration parameters, both instrumental and astronomical, to correct the collected data. Typically, astronomers use a package such as Common Astronomy Software Applications (CASA) to compute the gain solutions based on regular observations of a known calibrator source. In this work we present applications of machine learning to first generation calibration (1GC), using the KAT-7 telescope environmental and pointing sensor data recorded during observations. Applying machine learning to 1GC, as opposed to calculating the gain solutions in CASA, has shown evidence of reducing computation, as well as accurately predict the 1GC gain solutions representing the behaviour of the antenna during an observation. These methods are computationally less expensive, however they have not fully learned to generalise in predicting accurate 1GC solutions by looking at environmental and pointing sensors. We call this multi-output regression model ZCal, which is based on random forest, decision trees, extremely randomized trees and K-nearest neighbor algorithms. The prediction error obtained during the testing of our model on testing data is ≈ 0.01 < rmse < 0.09 for gain amplitude per antenna, and 0.2 rad < rmse <0.5 rad for gain phase. This shows that the instrumental parameters used to train our model more strongly correlate with gain amplitude effects than phase.
- Full Text:
- Date Issued: 2019
- Authors: Zitha, Simphiwe Nhlanhla
- Date: 2019
- Subjects: Calibration , Radio astronomy -- Data processing , Radio astronomy -- South Africa , Karoo Array Telescope (South Africa) , Radio telescopes -- South Africa , Common Astronomy Software Application (Computer software)
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/97096 , vital:31398
- Description: The applications of machine learning have created an opportunity to deal with complex problems currently encountered in radio astronomy data processing. Calibration is one of the most important data processing steps required to produce high dynamic range images. This process involves the determination of calibration parameters, both instrumental and astronomical, to correct the collected data. Typically, astronomers use a package such as Common Astronomy Software Applications (CASA) to compute the gain solutions based on regular observations of a known calibrator source. In this work we present applications of machine learning to first generation calibration (1GC), using the KAT-7 telescope environmental and pointing sensor data recorded during observations. Applying machine learning to 1GC, as opposed to calculating the gain solutions in CASA, has shown evidence of reducing computation, as well as accurately predict the 1GC gain solutions representing the behaviour of the antenna during an observation. These methods are computationally less expensive, however they have not fully learned to generalise in predicting accurate 1GC solutions by looking at environmental and pointing sensors. We call this multi-output regression model ZCal, which is based on random forest, decision trees, extremely randomized trees and K-nearest neighbor algorithms. The prediction error obtained during the testing of our model on testing data is ≈ 0.01 < rmse < 0.09 for gain amplitude per antenna, and 0.2 rad < rmse <0.5 rad for gain phase. This shows that the instrumental parameters used to train our model more strongly correlate with gain amplitude effects than phase.
- Full Text:
- Date Issued: 2019
Rehabilitation services in a district health system: managers’ perceptions
- Authors: Zinn, Richard Thebu
- Date: 2019
- Subjects: Medical rehabilitation , Primary health care -- South Africa -- Eastern Cape Primary health care -- Management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/44280 , vital:37145
- Description: The growth of rehabilitation services in a specific district in the Eastern Cape has been of concern to the majority of the therapists working in that setting between 2012 and 2015. With the importance of primary health care as the driver of South Africa’s National Health Insurance scheme, and the need for rehabilitation services increasing, the investigation of the perceptions of managers who oversee rehabilitation services is pertinent. The objectives of the study were to explore and describe the perceptions of managers regarding rehabilitation services in a district health system and to make recommendations to the Provincial Department of Health regarding the management of rehabilitation services at a district level based on the managers’ perceptions. A qualitative, exploratory, descriptive, contextual research design was used as minimal information relating to the topic was found. The complexity of perceptions, their influence on behaviour and the environment, are wellexplored using these design approaches. Purposive sampling and semi-structured interviews were used to elicit meaningful responses from managers familiar, and tasked, with the oversight of the rehabilitation service. Data analysis was performed utilising Tesch’s model of thematic synthesis. To ensure rigour within the research Lincoln and Guba’s model of trustworthiness was followed. The ethical principles of respect for persons, beneficence and justice were upheld in the study. A thick description was utilised when reporting the findings and a literature control was done to place the findings in the present literature on the topic. The study has provided insights and perceptions of an important layer within the district health system. These perceptions are meaningful, as they influence the manner in which policy and plans are interpreted and implemented, and decisions are made within the environment of rehabilitation services. Three major themes arose from the data analysis process, namely: The managers’ reported positive factors regarding rehabilitation services, they identified challenges affecting the implementation of rehabilitation services in the District Health System, and they provided suggestions for the improvement of rehabilitation services in the District Health System. The positive views held by those in management positions indicate that there are strong foundations on which to build the rehabilitation service, and features of the system that need to be acknowledged, continued and strengthened. The challenges experienced by this layer of management point to aspects that need to be addressed in order to improve and optimise the impact of the inclusion of rehabilitation services in Primary Health Care. The findings in this study clarify these challenges, and if these are not addressed, the goals of the progressive health care system which South Africa is trying to implement cannot be fully achieved. Furthermore, the discrepancies and gaps that exist between urban and rural, and better and poorer resourced districts are likely to widen. The limitations of the study were identified and recommendations were made for practice (management), education and research.
- Full Text:
- Date Issued: 2019
- Authors: Zinn, Richard Thebu
- Date: 2019
- Subjects: Medical rehabilitation , Primary health care -- South Africa -- Eastern Cape Primary health care -- Management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/44280 , vital:37145
- Description: The growth of rehabilitation services in a specific district in the Eastern Cape has been of concern to the majority of the therapists working in that setting between 2012 and 2015. With the importance of primary health care as the driver of South Africa’s National Health Insurance scheme, and the need for rehabilitation services increasing, the investigation of the perceptions of managers who oversee rehabilitation services is pertinent. The objectives of the study were to explore and describe the perceptions of managers regarding rehabilitation services in a district health system and to make recommendations to the Provincial Department of Health regarding the management of rehabilitation services at a district level based on the managers’ perceptions. A qualitative, exploratory, descriptive, contextual research design was used as minimal information relating to the topic was found. The complexity of perceptions, their influence on behaviour and the environment, are wellexplored using these design approaches. Purposive sampling and semi-structured interviews were used to elicit meaningful responses from managers familiar, and tasked, with the oversight of the rehabilitation service. Data analysis was performed utilising Tesch’s model of thematic synthesis. To ensure rigour within the research Lincoln and Guba’s model of trustworthiness was followed. The ethical principles of respect for persons, beneficence and justice were upheld in the study. A thick description was utilised when reporting the findings and a literature control was done to place the findings in the present literature on the topic. The study has provided insights and perceptions of an important layer within the district health system. These perceptions are meaningful, as they influence the manner in which policy and plans are interpreted and implemented, and decisions are made within the environment of rehabilitation services. Three major themes arose from the data analysis process, namely: The managers’ reported positive factors regarding rehabilitation services, they identified challenges affecting the implementation of rehabilitation services in the District Health System, and they provided suggestions for the improvement of rehabilitation services in the District Health System. The positive views held by those in management positions indicate that there are strong foundations on which to build the rehabilitation service, and features of the system that need to be acknowledged, continued and strengthened. The challenges experienced by this layer of management point to aspects that need to be addressed in order to improve and optimise the impact of the inclusion of rehabilitation services in Primary Health Care. The findings in this study clarify these challenges, and if these are not addressed, the goals of the progressive health care system which South Africa is trying to implement cannot be fully achieved. Furthermore, the discrepancies and gaps that exist between urban and rural, and better and poorer resourced districts are likely to widen. The limitations of the study were identified and recommendations were made for practice (management), education and research.
- Full Text:
- Date Issued: 2019
Government support and sustainable small, medium enterprises (SMEs) in the ocean economy: a case of Eastern Cape
- Authors: Zilimbola, Mlungiseleli
- Date: 2019
- Subjects: Small business -- South Africa -- Eastern Cape , Marine resources -- Economic aspects Shipping -- Economic aspects Sustainable development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44291 , vital:37149
- Description: In the past few years, South Africa has started to follow other developing countries, such as Japan and Greece, in pursuit of oceans economy. The presidency launched operation phakisa in Port Elizabeth in 2016 with the hope that it would contribute greatly to job creation and economic development in South Africa. It has been noted that oceans economy is a wide concept and covers a number of activities/sectors in the oceans. This study will focus on different economic is a wide concept and covers a number of activities, such as transport, fishing, bunkering and many other economic activities. This study seeks to investigate the strategic role of SMEs in the oceans economy. In accordance with the report drafted by the small enterprise development agency (seda) in 2016, which was commissioned by the department of trade and industry , the report show that SMMEs are struggling because of access to finance and markets, poor infrastructure, labour laws, crime, skills shortages.
- Full Text: false
- Date Issued: 2019
- Authors: Zilimbola, Mlungiseleli
- Date: 2019
- Subjects: Small business -- South Africa -- Eastern Cape , Marine resources -- Economic aspects Shipping -- Economic aspects Sustainable development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44291 , vital:37149
- Description: In the past few years, South Africa has started to follow other developing countries, such as Japan and Greece, in pursuit of oceans economy. The presidency launched operation phakisa in Port Elizabeth in 2016 with the hope that it would contribute greatly to job creation and economic development in South Africa. It has been noted that oceans economy is a wide concept and covers a number of activities/sectors in the oceans. This study will focus on different economic is a wide concept and covers a number of activities, such as transport, fishing, bunkering and many other economic activities. This study seeks to investigate the strategic role of SMEs in the oceans economy. In accordance with the report drafted by the small enterprise development agency (seda) in 2016, which was commissioned by the department of trade and industry , the report show that SMMEs are struggling because of access to finance and markets, poor infrastructure, labour laws, crime, skills shortages.
- Full Text: false
- Date Issued: 2019
Sustainability reporting guidelines for higher educational institutions in South Africa
- Authors: Zietsman, Jaco
- Date: 2019
- Subjects: Education, Higher -- South Africa , Corporation reports Sustainability
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/33384 , vital:32754
- Description: In the higher education sector, a number of Higher Education Institutions (HEIs) are playing a leading role in promoting sustainable initiatives. Managing these initiatives effectively can be a complex task and requires data and information from multiple sources. HEIs must ensure financial sustainability, social sustainability, environmental sustainability and educational sustainability. HEIs in South Africa are required to produce a sustainability report for the Department of Higher Education and Training (DHET) on an annual basis. HEIs are not required to use a specific set of guidelines to create a report that complies with the DHET reporting requirements. HEIs face a number of challenges in effectively managing and reporting on sustainability information, such as poor sharing and communication of information and combining information from different sources to form an integrated report. Well-structured guidelines that adheres to institution standards and governmental reporting requirements can effectively streamline the sustainability reporting process. This study investigates the requirements and challenges of effective sustainability reporting for HEIs in South Africa. A set of Global Reporting Initiative (GRI) G4 guidelines were reworked to support effective sustainability reporting by South African HEIs. Nelson Mandela University is one such HEI, which is affected by the challenges of managing and reporting on strategic sustainability information. Nelson Mandela University was therefore used as a case study in this research study. An in-depth study was done exploring how prominent international universities apply the GRI guidelines to contribute and generate integrated sustainability reports for their specific HEIs and general reporting needs and requirements. Additionally, an in-depth study of the German integrated reporting guidelines for HEI’s was conducted. Furthermore, a study of the South African DHET reporting requirements was conducted to explore the similarities that exists between the GRI (G4) guidelines and DHET requirements. The guidelines were evaluated by Nelson Mandela University personnel and academics. The final product consists of a set of GRI guidelines that have been adapted to satisfy both GRI and DHET requirements for integrated sustainability reporting for South African HEIs. The contributions from this study are a set of GRI G4 guidelines and examples for integrated sustainability reporting and management for HEIs in South Africa. The set of adapted GRI guidelines for HEIs in South Africa was created with the assistance of the strategic management departments at Nelson Mandela University. The GRI guidelines have been reworded to be specifically applicable to South African HEIs and contain instructions and guidelines on how to generate an integrated sustainability report for a South African HEI.
- Full Text:
- Date Issued: 2019
- Authors: Zietsman, Jaco
- Date: 2019
- Subjects: Education, Higher -- South Africa , Corporation reports Sustainability
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/33384 , vital:32754
- Description: In the higher education sector, a number of Higher Education Institutions (HEIs) are playing a leading role in promoting sustainable initiatives. Managing these initiatives effectively can be a complex task and requires data and information from multiple sources. HEIs must ensure financial sustainability, social sustainability, environmental sustainability and educational sustainability. HEIs in South Africa are required to produce a sustainability report for the Department of Higher Education and Training (DHET) on an annual basis. HEIs are not required to use a specific set of guidelines to create a report that complies with the DHET reporting requirements. HEIs face a number of challenges in effectively managing and reporting on sustainability information, such as poor sharing and communication of information and combining information from different sources to form an integrated report. Well-structured guidelines that adheres to institution standards and governmental reporting requirements can effectively streamline the sustainability reporting process. This study investigates the requirements and challenges of effective sustainability reporting for HEIs in South Africa. A set of Global Reporting Initiative (GRI) G4 guidelines were reworked to support effective sustainability reporting by South African HEIs. Nelson Mandela University is one such HEI, which is affected by the challenges of managing and reporting on strategic sustainability information. Nelson Mandela University was therefore used as a case study in this research study. An in-depth study was done exploring how prominent international universities apply the GRI guidelines to contribute and generate integrated sustainability reports for their specific HEIs and general reporting needs and requirements. Additionally, an in-depth study of the German integrated reporting guidelines for HEI’s was conducted. Furthermore, a study of the South African DHET reporting requirements was conducted to explore the similarities that exists between the GRI (G4) guidelines and DHET requirements. The guidelines were evaluated by Nelson Mandela University personnel and academics. The final product consists of a set of GRI guidelines that have been adapted to satisfy both GRI and DHET requirements for integrated sustainability reporting for South African HEIs. The contributions from this study are a set of GRI G4 guidelines and examples for integrated sustainability reporting and management for HEIs in South Africa. The set of adapted GRI guidelines for HEIs in South Africa was created with the assistance of the strategic management departments at Nelson Mandela University. The GRI guidelines have been reworded to be specifically applicable to South African HEIs and contain instructions and guidelines on how to generate an integrated sustainability report for a South African HEI.
- Full Text:
- Date Issued: 2019
Synthesis and properties of chiral amide-bonded porphyrin dimers with various functional bridging blocks
- Zhu, Weihua, Haider, Syed Najeeb-uz-Zaman, Zhang, Honglin, Attatsi, Isaac K, Mack, John, Dingiswayo, Somila, Nyokong, Tebello, Song, Yuting, Xu, Haijun, Liang, Xu
- Authors: Zhu, Weihua , Haider, Syed Najeeb-uz-Zaman , Zhang, Honglin , Attatsi, Isaac K , Mack, John , Dingiswayo, Somila , Nyokong, Tebello , Song, Yuting , Xu, Haijun , Liang, Xu
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186791 , vital:44534 , xlink:href="https://doi.org/10.1016/j.dyepig.2019.107740"
- Description: Eight porphyrin dimers with various functional bridging blocks and chiral amide-bonds were synthesized and characterized. An analysis of the spectroscopy and electrochemistry has been carried out to demonstrate that the chiral properties can be modified by changing the interchromophoric through-space coupling distance between the two porphyrin chromophores by introducing various bonding and bridging blocks.
- Full Text:
- Date Issued: 2019
- Authors: Zhu, Weihua , Haider, Syed Najeeb-uz-Zaman , Zhang, Honglin , Attatsi, Isaac K , Mack, John , Dingiswayo, Somila , Nyokong, Tebello , Song, Yuting , Xu, Haijun , Liang, Xu
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186791 , vital:44534 , xlink:href="https://doi.org/10.1016/j.dyepig.2019.107740"
- Description: Eight porphyrin dimers with various functional bridging blocks and chiral amide-bonds were synthesized and characterized. An analysis of the spectroscopy and electrochemistry has been carried out to demonstrate that the chiral properties can be modified by changing the interchromophoric through-space coupling distance between the two porphyrin chromophores by introducing various bonding and bridging blocks.
- Full Text:
- Date Issued: 2019
Cordidepsine is A Potential New Anti-HIV Depsidone from Cordia millenii
- Zeukang, Rostanie D, Siwe-Noundou, Xavier, Fotsing, Maurice T, Mbafor, Joseph T, Krause, Rui W M, Choudhary, Muhammad I, Atchade, Alex de Theodore
- Authors: Zeukang, Rostanie D , Siwe-Noundou, Xavier , Fotsing, Maurice T , Mbafor, Joseph T , Krause, Rui W M , Choudhary, Muhammad I , Atchade, Alex de Theodore
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/193988 , vital:45413 , xlink:href="https://doi.org/10.3390/molecules24173202"
- Description: Chemical investigation of Cordia millenii, Baker resulted in the isolation of a new depsidone, cordidepsine (1), along with twelve known compounds including cyclooctasulfur (2), lup-20(29)-en-3-triacontanoate (3), 1-(26-hydroxyhexacosanoyl)glycerol (4), glyceryl-1-hexacosanoate (5) betulinic acid (6), lupenone (7), β-amyrone (8), lupeol (9), β-amyrin (10), allantoin (11), 2′-(4-hydroxyphenyl)ethylpropanoate (12) and stigmasterol glycoside (13). Hemi-synthetic reactions were carried out on two isolated compounds (5 and 6) to afford two new derivatives, that is, cordicerol A (14) and cordicerol B (15), respectively. The chemical structures of all the compounds were established based on analysis and interpretation of spectroscopic data such as electron ionization mass spectrometry (EI–MS), high resolution electrospray ionization mass spectrometry (HR-ESI–MS), fast atom bombardment mass spectrometry (FAB–MS), one dimension and two dimension nuclear magnetic resonance (1D and 2D-NMR) spectral data as well as X-ray crystallography (XRC). Lupeol ester derivatives [Lup-20(29)-en-3-triacontanoate (3)], monoglycerol derivatives [1-(26-hydroxyhexacosanoyl)glycerol (4) and glyceryl-1 hexacosanoate (5)] were isolated for the first time from Cordia genus while sulfur allotrope [cyclooctasulfur (2)] was isolated for the first time from plant origin. Biological assays cordidepsine (1) exhibited significant anti-HIV integrase activity with IC50 = 4.65 μM; EtOAc extract of stem barks, EtOAc fraction of roots and leaves were not toxic against 3T3 cells.
- Full Text:
- Date Issued: 2019
- Authors: Zeukang, Rostanie D , Siwe-Noundou, Xavier , Fotsing, Maurice T , Mbafor, Joseph T , Krause, Rui W M , Choudhary, Muhammad I , Atchade, Alex de Theodore
- Date: 2019
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/193988 , vital:45413 , xlink:href="https://doi.org/10.3390/molecules24173202"
- Description: Chemical investigation of Cordia millenii, Baker resulted in the isolation of a new depsidone, cordidepsine (1), along with twelve known compounds including cyclooctasulfur (2), lup-20(29)-en-3-triacontanoate (3), 1-(26-hydroxyhexacosanoyl)glycerol (4), glyceryl-1-hexacosanoate (5) betulinic acid (6), lupenone (7), β-amyrone (8), lupeol (9), β-amyrin (10), allantoin (11), 2′-(4-hydroxyphenyl)ethylpropanoate (12) and stigmasterol glycoside (13). Hemi-synthetic reactions were carried out on two isolated compounds (5 and 6) to afford two new derivatives, that is, cordicerol A (14) and cordicerol B (15), respectively. The chemical structures of all the compounds were established based on analysis and interpretation of spectroscopic data such as electron ionization mass spectrometry (EI–MS), high resolution electrospray ionization mass spectrometry (HR-ESI–MS), fast atom bombardment mass spectrometry (FAB–MS), one dimension and two dimension nuclear magnetic resonance (1D and 2D-NMR) spectral data as well as X-ray crystallography (XRC). Lupeol ester derivatives [Lup-20(29)-en-3-triacontanoate (3)], monoglycerol derivatives [1-(26-hydroxyhexacosanoyl)glycerol (4) and glyceryl-1 hexacosanoate (5)] were isolated for the first time from Cordia genus while sulfur allotrope [cyclooctasulfur (2)] was isolated for the first time from plant origin. Biological assays cordidepsine (1) exhibited significant anti-HIV integrase activity with IC50 = 4.65 μM; EtOAc extract of stem barks, EtOAc fraction of roots and leaves were not toxic against 3T3 cells.
- Full Text:
- Date Issued: 2019
The role of the community policing forum initiative in fighting crime: a case study of Middledrift in the Eastern Cape
- Authors: Zazini, Buyelwa
- Date: 2019
- Subjects: Community policing Crime prevention
- Language: English
- Type: Thesis , Masters , MSoc (Criminology)
- Identifier: http://hdl.handle.net/10353/16440 , vital:40720
- Description: According to the South African Police Service Act 68 of 1995, a Community Policing Forum (CPF) is a forum established at each police station and it should be largely representative of the local community. The main objectives of the CPF is to promote communication and co-operation between the South African Police Service (SAPS) and the community. Above all it is aimed at improving the services rendered by the SAPS and identifying the problems encountered by communities in order to solve problems jointly. This study was aimed at evaluating the effectiveness of community policing in the initiative to fight crime in Middledrift. The study used interviews to gather the data. A total of 15 respondents, comprising of three groups, namely individuals from the SAPS, individuals from the CPF and community leaders were carefully chosen to access what they knew about the CPF in Middledrift. The findings highlighted that there was a need for awareness campaigns. Community leaders need to be involved especially in decision making. Necessary resources and training are also of great need for the CPF.
- Full Text:
- Date Issued: 2019
- Authors: Zazini, Buyelwa
- Date: 2019
- Subjects: Community policing Crime prevention
- Language: English
- Type: Thesis , Masters , MSoc (Criminology)
- Identifier: http://hdl.handle.net/10353/16440 , vital:40720
- Description: According to the South African Police Service Act 68 of 1995, a Community Policing Forum (CPF) is a forum established at each police station and it should be largely representative of the local community. The main objectives of the CPF is to promote communication and co-operation between the South African Police Service (SAPS) and the community. Above all it is aimed at improving the services rendered by the SAPS and identifying the problems encountered by communities in order to solve problems jointly. This study was aimed at evaluating the effectiveness of community policing in the initiative to fight crime in Middledrift. The study used interviews to gather the data. A total of 15 respondents, comprising of three groups, namely individuals from the SAPS, individuals from the CPF and community leaders were carefully chosen to access what they knew about the CPF in Middledrift. The findings highlighted that there was a need for awareness campaigns. Community leaders need to be involved especially in decision making. Necessary resources and training are also of great need for the CPF.
- Full Text:
- Date Issued: 2019
The implementation of performance management systems: Chris Hani District Municipality
- Authors: Zazi, Luzuko
- Date: 2019
- Subjects: Performance -- Management -- South Africa -- Eastern Cape -- Chris Hani District Municipality , Employees -- Rating of -- South Africa -- Eastern Cape -- Chris Hani District Municipality Municipal government -- South Africa -- Eastern Cape -- Chris Hani District Municipality
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/44301 , vital:37150
- Description: This study stemmed from the researcher’s observations about the seemingly ‘obvious’ under performance of the Chris Hani District Municipality and the Lukhanji Local Municipality. As a resident of Komani – under the now Enoch Mgijima Local Municipality, the researcher noticed the rampant water cuts and electric power outages, among other issues, experienced in the district; and sort to understand the underlying causes to these. To understand the root-cause, this study aimed to describe the implementation of performance management systems within the Chris Hani District Municipality; neglecting the Lukhanji Local Municipality as it was in the process of amalgamation to form the Enoch Mgijima Local Municipality. The process was finalised in August 2017, proving the municipality ‘too new’ to study. As a descriptive, qualitative study following the constructivist paradigm, focus was placed on the role senior management plays in the performance management processes, with six operational staff’s perceptions about this process interrogated through a focus group. As custodians and drivers of quality service delivery, five directors and senior managers were interviewed through semi-structured interviews to gather thick, descriptive narratives about the process. The study found performance management was implemented at management level only, with ‘loose’ performance arrangements between supervisors and subordinates. This made it difficult to manage performance or account for poor performance as there are not strict, contractual targets. At management level, critical issues found included poor performance information collection, management not owning their respective targets on their portfolios of evidence, non-alignment of targets with the Integrated Development Plan, and Council not holding persons responsible for irregular expenditure accountable - as no investigations were done in order to recover the monies. This, the Auditor General says promotes a general culture of unaccountability; thus, confirming the researcher’s observations and identifying the root-cause. Recommendations included a ‘back-to-basics’ philosophical approach to municipal governance. These included an adoption of a comprehensive performance management policy; management empowerment in the collection and use of performance information; a change in organisational culture from both side of the political-administrative dichotomy; and an introduction of a community-based monitoring mechanism supplemented with a non-partisan voter education initiative. Furthermore, the strengthening of intergovernmental relations was recommended insofar as this pertains to the delivering of basics services and infrastructure, developing the local economy, and improving the quality of life within the district.
- Full Text:
- Date Issued: 2019
- Authors: Zazi, Luzuko
- Date: 2019
- Subjects: Performance -- Management -- South Africa -- Eastern Cape -- Chris Hani District Municipality , Employees -- Rating of -- South Africa -- Eastern Cape -- Chris Hani District Municipality Municipal government -- South Africa -- Eastern Cape -- Chris Hani District Municipality
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/44301 , vital:37150
- Description: This study stemmed from the researcher’s observations about the seemingly ‘obvious’ under performance of the Chris Hani District Municipality and the Lukhanji Local Municipality. As a resident of Komani – under the now Enoch Mgijima Local Municipality, the researcher noticed the rampant water cuts and electric power outages, among other issues, experienced in the district; and sort to understand the underlying causes to these. To understand the root-cause, this study aimed to describe the implementation of performance management systems within the Chris Hani District Municipality; neglecting the Lukhanji Local Municipality as it was in the process of amalgamation to form the Enoch Mgijima Local Municipality. The process was finalised in August 2017, proving the municipality ‘too new’ to study. As a descriptive, qualitative study following the constructivist paradigm, focus was placed on the role senior management plays in the performance management processes, with six operational staff’s perceptions about this process interrogated through a focus group. As custodians and drivers of quality service delivery, five directors and senior managers were interviewed through semi-structured interviews to gather thick, descriptive narratives about the process. The study found performance management was implemented at management level only, with ‘loose’ performance arrangements between supervisors and subordinates. This made it difficult to manage performance or account for poor performance as there are not strict, contractual targets. At management level, critical issues found included poor performance information collection, management not owning their respective targets on their portfolios of evidence, non-alignment of targets with the Integrated Development Plan, and Council not holding persons responsible for irregular expenditure accountable - as no investigations were done in order to recover the monies. This, the Auditor General says promotes a general culture of unaccountability; thus, confirming the researcher’s observations and identifying the root-cause. Recommendations included a ‘back-to-basics’ philosophical approach to municipal governance. These included an adoption of a comprehensive performance management policy; management empowerment in the collection and use of performance information; a change in organisational culture from both side of the political-administrative dichotomy; and an introduction of a community-based monitoring mechanism supplemented with a non-partisan voter education initiative. Furthermore, the strengthening of intergovernmental relations was recommended insofar as this pertains to the delivering of basics services and infrastructure, developing the local economy, and improving the quality of life within the district.
- Full Text:
- Date Issued: 2019
Examining the influence of extrinsic factors on herbivore assemblage composition in a southern African savanna
- Young, Cyanne, Smithwick, Erica
- Authors: Young, Cyanne , Smithwick, Erica
- Date: 2019
- Subjects: Herbivores -- Ecology , Ungulates -- Ecology Mammal populations -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44334 , vital:37154
- Description: Globally, herbivore populations have become threatened by the effects of a growing human population. This has resulted in over-hunting, habitat encroachment, fragmentation and degradation and competition leading to the replacement of wild herbivore populations with livestock. African herbivores, in particular, have experienced a severe decline in abundance and distribution, and vast conservation management efforts are underway to preserve herbivore populations and promote their growth. However, conservation management efforts sometimes have unintended consequences on the abundance and distribution of herbivores as a result of the complex interactions they have with their ecosystem. The aim of this study was to: 1) examine the drivers of herbivore distribution at the Satara section of Kruger National Park (hereafter ‘KNP’) at a landscape scale, to determine assemblage composition under the constraints of different environmental attributes; and 2) examine feeding selection by grazing herbivores of different morpho-physiological characteristics at a patch scale of differing environmental attributes. To achieve this, thirty-six experimental plots were established at three distances from water at Satara, and manipulated by mowing, mowing and fertilising or fertilising only over the course of a year, to account for seasonal effects. Each plot was fitted with a camera trap which ran for five weeks in each sampling season, and the data collected focussed on eleven herbivore species of differing body size, digestive strategy and feeding preference. These species were selected due to their abundance at Satara, and their representation of a variety of morpho-physiological characteristics. To achieve both aims, generalised linear models were used to determine the probability of occurrence of a functional type (for aim 1- Chapter 3), and individual species (for aim 2- Chapter 4). To construct the generalised linear models for Chapter 3, hypotheses about species’ relative distribution and abundance were developed through a literature review of forage and water availability constraints on feeding preference and body size of herbivore biomass at a landscape scale. I expected strong seasonal relationships between vegetation biomass and quality, and biomass of water-dependent herbivores with increasing distance to water. My analyses of herbivore distribution across the region confirmed broad-scale descriptions of interactions between forage requirements and water availability, across a set of species which differ in functional traits, at a landscape scale. In Chapter 4, trends in probability of occurrence by seven grazing herbivore species were determined using camera trap data at a patch scale. My results showed that season was a major determinant of species distribution, especially those which are not obligate grazers or feed exclusively in the 0.5 km to 2 km zone from water. I found that most selective feeding occurred in the late wet season when water would be more evenly distributed across the landscape and forage resources close to water would have had the chance to recover from depletion as a result of dry season use. The collective efforts of this study show that distance from water was a critical determinant of herbivore distribution across the landscape, and that forage utilisation by small mixed-feeders and large grazers in particular, altered significantly across seasons. This has important implications for the provision of artificial water, given that foraging pressure is increased closer to water. Landscape heterogeneity needs to be maintained through efficient water provision, to allow areas of forage reserve to maintained in the dry season, where species are constrained by water availability and forage quality and quantity.
- Full Text:
- Date Issued: 2019
- Authors: Young, Cyanne , Smithwick, Erica
- Date: 2019
- Subjects: Herbivores -- Ecology , Ungulates -- Ecology Mammal populations -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44334 , vital:37154
- Description: Globally, herbivore populations have become threatened by the effects of a growing human population. This has resulted in over-hunting, habitat encroachment, fragmentation and degradation and competition leading to the replacement of wild herbivore populations with livestock. African herbivores, in particular, have experienced a severe decline in abundance and distribution, and vast conservation management efforts are underway to preserve herbivore populations and promote their growth. However, conservation management efforts sometimes have unintended consequences on the abundance and distribution of herbivores as a result of the complex interactions they have with their ecosystem. The aim of this study was to: 1) examine the drivers of herbivore distribution at the Satara section of Kruger National Park (hereafter ‘KNP’) at a landscape scale, to determine assemblage composition under the constraints of different environmental attributes; and 2) examine feeding selection by grazing herbivores of different morpho-physiological characteristics at a patch scale of differing environmental attributes. To achieve this, thirty-six experimental plots were established at three distances from water at Satara, and manipulated by mowing, mowing and fertilising or fertilising only over the course of a year, to account for seasonal effects. Each plot was fitted with a camera trap which ran for five weeks in each sampling season, and the data collected focussed on eleven herbivore species of differing body size, digestive strategy and feeding preference. These species were selected due to their abundance at Satara, and their representation of a variety of morpho-physiological characteristics. To achieve both aims, generalised linear models were used to determine the probability of occurrence of a functional type (for aim 1- Chapter 3), and individual species (for aim 2- Chapter 4). To construct the generalised linear models for Chapter 3, hypotheses about species’ relative distribution and abundance were developed through a literature review of forage and water availability constraints on feeding preference and body size of herbivore biomass at a landscape scale. I expected strong seasonal relationships between vegetation biomass and quality, and biomass of water-dependent herbivores with increasing distance to water. My analyses of herbivore distribution across the region confirmed broad-scale descriptions of interactions between forage requirements and water availability, across a set of species which differ in functional traits, at a landscape scale. In Chapter 4, trends in probability of occurrence by seven grazing herbivore species were determined using camera trap data at a patch scale. My results showed that season was a major determinant of species distribution, especially those which are not obligate grazers or feed exclusively in the 0.5 km to 2 km zone from water. I found that most selective feeding occurred in the late wet season when water would be more evenly distributed across the landscape and forage resources close to water would have had the chance to recover from depletion as a result of dry season use. The collective efforts of this study show that distance from water was a critical determinant of herbivore distribution across the landscape, and that forage utilisation by small mixed-feeders and large grazers in particular, altered significantly across seasons. This has important implications for the provision of artificial water, given that foraging pressure is increased closer to water. Landscape heterogeneity needs to be maintained through efficient water provision, to allow areas of forage reserve to maintained in the dry season, where species are constrained by water availability and forage quality and quantity.
- Full Text:
- Date Issued: 2019
Attitudes of healthcare professionals towards substance dependent Clients who have relapsed
- Authors: Yokwe, Zintle
- Date: 2019
- Subjects: Substance abuse -- Relapse , Substance abuse -- Psychological aspects Attitude (Psychology) Psychologists -- South Africa -- Attitudes
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/44345 , vital:37156
- Description: Relapse has been identified as a major problem when it comes to substancedependence. Research focusing on substance-dependence has found that substance users are at risk of relapsing after attending treatment, whether receiving out-patient or in-patient services. Healthcare professionals are seen as playing a crucial role when it comes to assisting substance-dependence clients; hence their attitudes when working with these clients are considered important. This study explored the attitudes of healthcare professionals when it came to working with substance-dependent clients who had relapsed. The study further explored whether the attitudes held by the healthcare professionals affected the treatment interventions or plans implemented. The study adopted the theory of planned behavior as a theoretical framework, and a qualitative research methodology was used. Nine participants (four social workers, one nurse, one drug counsellor, one psychologist and one registered counsellor) made up the research sample. A combination of convenience and purposive sampling techniques was used. Data was transcribed verbatim and analysed using thematic analysis. The findings of the study indicated that healthcare professionals displayed both positive and negatives attitudes when working with substance-dependent clients who had relapsed. The findings of the study showed that although some of the healthcare professionals displayed negative attitudes when clients relapsed, they still believed that their clients could recover and were committed to assisting them. The findings showed that healthcare professionals who worked with substance-dependent clients who had relapsed were influenced by the confidence they had in working with substance-dependence clients, their experiences, the client’s attitudes and level of motivation, as well as the client’s reasons for relapsing. This study also described the different treatment interventions healthcare professionals implemented when working with relapsed clients. Based on the conclusions made, it is important for healthcare professionals to have the relevant education, knowledge and experience that is needed to work with substance-dependence and relapse. The importance of healthcare professionals’ awareness of their attitudes and how these affect their behavior when working with substance-dependence was noted. It is recommend that similar studies are conducted in provinces or cities that have been identified to have high levels of substance-dependence relapse. Identifying healthcare professionals’ attitudes from these regions could result in more knowledge.
- Full Text:
- Date Issued: 2019
- Authors: Yokwe, Zintle
- Date: 2019
- Subjects: Substance abuse -- Relapse , Substance abuse -- Psychological aspects Attitude (Psychology) Psychologists -- South Africa -- Attitudes
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/44345 , vital:37156
- Description: Relapse has been identified as a major problem when it comes to substancedependence. Research focusing on substance-dependence has found that substance users are at risk of relapsing after attending treatment, whether receiving out-patient or in-patient services. Healthcare professionals are seen as playing a crucial role when it comes to assisting substance-dependence clients; hence their attitudes when working with these clients are considered important. This study explored the attitudes of healthcare professionals when it came to working with substance-dependent clients who had relapsed. The study further explored whether the attitudes held by the healthcare professionals affected the treatment interventions or plans implemented. The study adopted the theory of planned behavior as a theoretical framework, and a qualitative research methodology was used. Nine participants (four social workers, one nurse, one drug counsellor, one psychologist and one registered counsellor) made up the research sample. A combination of convenience and purposive sampling techniques was used. Data was transcribed verbatim and analysed using thematic analysis. The findings of the study indicated that healthcare professionals displayed both positive and negatives attitudes when working with substance-dependent clients who had relapsed. The findings of the study showed that although some of the healthcare professionals displayed negative attitudes when clients relapsed, they still believed that their clients could recover and were committed to assisting them. The findings showed that healthcare professionals who worked with substance-dependent clients who had relapsed were influenced by the confidence they had in working with substance-dependence clients, their experiences, the client’s attitudes and level of motivation, as well as the client’s reasons for relapsing. This study also described the different treatment interventions healthcare professionals implemented when working with relapsed clients. Based on the conclusions made, it is important for healthcare professionals to have the relevant education, knowledge and experience that is needed to work with substance-dependence and relapse. The importance of healthcare professionals’ awareness of their attitudes and how these affect their behavior when working with substance-dependence was noted. It is recommend that similar studies are conducted in provinces or cities that have been identified to have high levels of substance-dependence relapse. Identifying healthcare professionals’ attitudes from these regions could result in more knowledge.
- Full Text:
- Date Issued: 2019
Role of Nurse Managers in Ensuring Client Satisfaction within the Primary Health Care Clinics in Buffalo City Health District
- Authors: Yiba,Theodora Nomboniso
- Date: 2019
- Subjects: Primary health care Nurse administrators
- Language: English
- Type: Thesis , Masters , M. CUR
- Identifier: http://hdl.handle.net/10353/16825 , vital:40777
- Description: In Primary Health Care system there are different categories of nurses that have different roles to play within their facilities, such as registered nurses, enrolled nurses and enrolled nursing assistants, operational managers at functional level within the Primary Health Care Clinics and also overall supervisors. The study focus was on operational managers as they are the key role players in quality client care within Primary health Care clinics, King William’s Town in Buffalo City Health District in Eastern Cape Province. The aim of the study was to describe the role of nurse managers in ensuring client satisfaction within the Primary Health Care Clinics at Buffalo City Health District in order to ensure effectiveness of Health Core Standards. The research questions were: The research questions that was addressed in this study Main question: “What is the role of nurse managers in ensuring client satisfaction within Primary Health Care Clinics at Buffalo City Health District?” Sub questions: How do you ensure client safety in your facility? How do you monitor client waiting time in your facility? What strategies can assist in the improvement of client satisfaction in Primary Health care clinics? The objectives were to explore and describe role of nurse managers in ensuring client satisfaction regarding safety within the Primary health Care clinics in Buffalo City Heath District, explore and describe role of nurse managers in client satisfaction about waiting time within Primary Health Care Clinics and to recommend strategies to improve client satisfaction within the Primary Health Care clinics in order to improve client satisfaction. A descriptive, explorative, qualitative, contextual design was used to describe and explore the role of operational manager in ensuring client satisfaction regarding client safety and waiting time within Primary Health Care Clinics. Purposive sampling method was used to select seven operational managers. Six operational managers participated in the study as one of them was bereaved during the interview period. One on one interviews with operational managers was used to collect the data. Data was collected until it reached saturation. Data collected was analyzed using Tesch’s steps of data analysis for qualitative research. vi The results were that the operational managers are performing their roles, but find it difficult to fully satisfy clients as they experience some roles’ related challenges in ensuring client satisfactory services. Related roles’ challenges were unavailability of enough nursing staff to cover all the programmes due to shortage of staff, poor infrastructure in some of the clinics, lack of support and appreciation from some of their supervisors, absenteeism of staff that negatively affect operational manager’s planning and organisation role, failure to deliver medication in time. They recommended some strategies regarding improvement of client satisfaction within the Primary Health Care clinics. The recommendations were, the department of health to fill in nurses and staff vacant posts, facilitation of prompt delivery of medication to Primary Health Care Clinics, the department to attend to poor infrastructure, District office to consider staff satisfactory survey, commitment of clinic supervisors in their monthly visits and the study findings be used when conducting further studies related to ensuring client satisfaction regarding safety and waiting time
- Full Text:
- Date Issued: 2019
- Authors: Yiba,Theodora Nomboniso
- Date: 2019
- Subjects: Primary health care Nurse administrators
- Language: English
- Type: Thesis , Masters , M. CUR
- Identifier: http://hdl.handle.net/10353/16825 , vital:40777
- Description: In Primary Health Care system there are different categories of nurses that have different roles to play within their facilities, such as registered nurses, enrolled nurses and enrolled nursing assistants, operational managers at functional level within the Primary Health Care Clinics and also overall supervisors. The study focus was on operational managers as they are the key role players in quality client care within Primary health Care clinics, King William’s Town in Buffalo City Health District in Eastern Cape Province. The aim of the study was to describe the role of nurse managers in ensuring client satisfaction within the Primary Health Care Clinics at Buffalo City Health District in order to ensure effectiveness of Health Core Standards. The research questions were: The research questions that was addressed in this study Main question: “What is the role of nurse managers in ensuring client satisfaction within Primary Health Care Clinics at Buffalo City Health District?” Sub questions: How do you ensure client safety in your facility? How do you monitor client waiting time in your facility? What strategies can assist in the improvement of client satisfaction in Primary Health care clinics? The objectives were to explore and describe role of nurse managers in ensuring client satisfaction regarding safety within the Primary health Care clinics in Buffalo City Heath District, explore and describe role of nurse managers in client satisfaction about waiting time within Primary Health Care Clinics and to recommend strategies to improve client satisfaction within the Primary Health Care clinics in order to improve client satisfaction. A descriptive, explorative, qualitative, contextual design was used to describe and explore the role of operational manager in ensuring client satisfaction regarding client safety and waiting time within Primary Health Care Clinics. Purposive sampling method was used to select seven operational managers. Six operational managers participated in the study as one of them was bereaved during the interview period. One on one interviews with operational managers was used to collect the data. Data was collected until it reached saturation. Data collected was analyzed using Tesch’s steps of data analysis for qualitative research. vi The results were that the operational managers are performing their roles, but find it difficult to fully satisfy clients as they experience some roles’ related challenges in ensuring client satisfactory services. Related roles’ challenges were unavailability of enough nursing staff to cover all the programmes due to shortage of staff, poor infrastructure in some of the clinics, lack of support and appreciation from some of their supervisors, absenteeism of staff that negatively affect operational manager’s planning and organisation role, failure to deliver medication in time. They recommended some strategies regarding improvement of client satisfaction within the Primary Health Care clinics. The recommendations were, the department of health to fill in nurses and staff vacant posts, facilitation of prompt delivery of medication to Primary Health Care Clinics, the department to attend to poor infrastructure, District office to consider staff satisfactory survey, commitment of clinic supervisors in their monthly visits and the study findings be used when conducting further studies related to ensuring client satisfaction regarding safety and waiting time
- Full Text:
- Date Issued: 2019
Creating value through experiential marketing for mobile network operators in Ghana
- Authors: Yiadom, Michael Boakye
- Date: 2019
- Subjects: Target marketing -- Ghana , Branding (Marketing) -- Ghana Marketing -- Ghana Telecommunication -- Ghana
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/44357 , vital:37158
- Description: Experiential marketing and value creation have become paramount for businesses, worldwide, to remain competitive and sustainable. Due to the global economic crisis which put all public and private sector businesses under financial stress, experiential marketing has become necessary as a mechanism in facilitating value creation for the mobile network operators (MNOs) in Ghana to survive and to outdo their counterparts in the industry. The effective and efficient implementation of the experiential marketing programmes and campaigns, aside from helping these businesses in deriving value, could further assist the government of Ghana in its quest to develop the telecommunications industry. The government has stated that the mobile network industry of the country should be based upon the principles of open markets and fair competition, which requires strong policies and strategies in experiential marketing to create value as well as to survive. It must be noted that a unique product or service experience creates a memorable customer experience where emotion has a significant impact on business performance in terms of customer satisfaction, retention, and loyalty, as well as growth in sales and revenue and return on capital employed (ROCE). It is of the utmost importance, therefore, that network operators have the necessary resources and techniques in experiential marketing to facilitate sustainable value creation in the industry, as a lack of proper resources and implementation strategies can hinder the successful creation of value. Given this situation, this study sought to create value through experiential marketing for MNOs in Ghana. The study sought to empirically test a hypothetical model reflecting 11 independent variables on experiential marketing (i.e. mediating variables), particularly with proper attention to the experiential value gained by consumers after consumption. Also, the study addressed the contribution of all mobile components, namely processes, physical evidence, and people, in experiential marketing and creating value for businesses. The remaining hypothesis aimed at identifying the impact of the mediating variable (i.e. experiential marketing) on the dependent variable (i.e. business value) to assess how value is created through experiential marketing for MNOs in Ghana. The outcome of the primary research helped in recommending strategies that could be employed by businesses for improving competitiveness and sustainability. The debate about value creation through experiential marketing to MNOs in Ghana is not available. Consequently, this study attempted to develop a hypothetical model to provide a scientific, theoretical, and empirical contribution to MNOs, other businesses, and the entire telecommunications industry of Ghana in order to aid them in creating value through experiential marketing. To achieve the objectives of this study, a quantitative approach using a face-to-face self-administered questionnaire was adopted to test the hypotheses. The participants were randomly selected based on the 10 regions to which they belong in the country. With a visit to the regional offices of the mobile operators, the questionnaires were conveniently administered. A total of 384 participants were selected through a stratification sampling and, in addition, a total of 31 participants were conveniently added, producing a total of 415 respondents who completed the survey. Based on the analysis of various secondary sources, a hypothetical model regarding creating value through experiential marketing for MNOs in Ghana was constructed. The proposed hypothetical model indicated that the mediating variable of experiential marketing, with sub-variables related to experiential mix (i.e. sense, feel, think, act, and relate) and experiential value (i.e. emotional, functional, and social), is possibly influenced by the independent variables. This influence is also known as the mobile mix, namely 1) physical evidence with sub-variables related to the physical environment, building and spatial layout, and corporate branding; 2) process with sub-variables related to technology development, research and development, and machines and operation; and 3) people with sub-elements related to input and output logistics, marketing and customers services, human resource management, and procurement managing. The business value (i.e. the dependent variables) was identified as consisting of sales value, growth value, and return on capital employed value (ROEV). IBM’s SPSS AMOS (Version 25) was utilised for data analysis. Descriptive statistics were used to summarise the data of respondents leading to easy interpretation by the researcher. Inferential statistical analysis was utilised to test for relationships between identified variables by using a validity test, a reliability test, correlation, and a structural equation model (SEM). The empirical results revealed that the mobile mix (i.e. the independent variables) has a significant positive influence and relationship with experiential marketing (i.e. the mediating variables). On the other hand, experiential marketing was identified as having a significant positive influence on business value (i.e. the dependent variables). The majority of the respondents agreed concerning the variable items measuring experiential marketing and its influence on creating value to MNOs in Ghana. It is envisaged that the empirical evidence provided in this study could assist MNOs in Ghana in understanding the factors influencing experiential marketing and its role in creating value and, thereby, assist these businesses in strategy development and decision-making. This study provides relevant and practical recommendations that could make MNOs in Ghana generate sustainable long-term value. Thus, the objectives of this study were achieved, and the research problem was answered. This study could also act as a foundation for other studies, thereby contributing to the body of knowledge in this regard.
- Full Text:
- Date Issued: 2019
- Authors: Yiadom, Michael Boakye
- Date: 2019
- Subjects: Target marketing -- Ghana , Branding (Marketing) -- Ghana Marketing -- Ghana Telecommunication -- Ghana
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/44357 , vital:37158
- Description: Experiential marketing and value creation have become paramount for businesses, worldwide, to remain competitive and sustainable. Due to the global economic crisis which put all public and private sector businesses under financial stress, experiential marketing has become necessary as a mechanism in facilitating value creation for the mobile network operators (MNOs) in Ghana to survive and to outdo their counterparts in the industry. The effective and efficient implementation of the experiential marketing programmes and campaigns, aside from helping these businesses in deriving value, could further assist the government of Ghana in its quest to develop the telecommunications industry. The government has stated that the mobile network industry of the country should be based upon the principles of open markets and fair competition, which requires strong policies and strategies in experiential marketing to create value as well as to survive. It must be noted that a unique product or service experience creates a memorable customer experience where emotion has a significant impact on business performance in terms of customer satisfaction, retention, and loyalty, as well as growth in sales and revenue and return on capital employed (ROCE). It is of the utmost importance, therefore, that network operators have the necessary resources and techniques in experiential marketing to facilitate sustainable value creation in the industry, as a lack of proper resources and implementation strategies can hinder the successful creation of value. Given this situation, this study sought to create value through experiential marketing for MNOs in Ghana. The study sought to empirically test a hypothetical model reflecting 11 independent variables on experiential marketing (i.e. mediating variables), particularly with proper attention to the experiential value gained by consumers after consumption. Also, the study addressed the contribution of all mobile components, namely processes, physical evidence, and people, in experiential marketing and creating value for businesses. The remaining hypothesis aimed at identifying the impact of the mediating variable (i.e. experiential marketing) on the dependent variable (i.e. business value) to assess how value is created through experiential marketing for MNOs in Ghana. The outcome of the primary research helped in recommending strategies that could be employed by businesses for improving competitiveness and sustainability. The debate about value creation through experiential marketing to MNOs in Ghana is not available. Consequently, this study attempted to develop a hypothetical model to provide a scientific, theoretical, and empirical contribution to MNOs, other businesses, and the entire telecommunications industry of Ghana in order to aid them in creating value through experiential marketing. To achieve the objectives of this study, a quantitative approach using a face-to-face self-administered questionnaire was adopted to test the hypotheses. The participants were randomly selected based on the 10 regions to which they belong in the country. With a visit to the regional offices of the mobile operators, the questionnaires were conveniently administered. A total of 384 participants were selected through a stratification sampling and, in addition, a total of 31 participants were conveniently added, producing a total of 415 respondents who completed the survey. Based on the analysis of various secondary sources, a hypothetical model regarding creating value through experiential marketing for MNOs in Ghana was constructed. The proposed hypothetical model indicated that the mediating variable of experiential marketing, with sub-variables related to experiential mix (i.e. sense, feel, think, act, and relate) and experiential value (i.e. emotional, functional, and social), is possibly influenced by the independent variables. This influence is also known as the mobile mix, namely 1) physical evidence with sub-variables related to the physical environment, building and spatial layout, and corporate branding; 2) process with sub-variables related to technology development, research and development, and machines and operation; and 3) people with sub-elements related to input and output logistics, marketing and customers services, human resource management, and procurement managing. The business value (i.e. the dependent variables) was identified as consisting of sales value, growth value, and return on capital employed value (ROEV). IBM’s SPSS AMOS (Version 25) was utilised for data analysis. Descriptive statistics were used to summarise the data of respondents leading to easy interpretation by the researcher. Inferential statistical analysis was utilised to test for relationships between identified variables by using a validity test, a reliability test, correlation, and a structural equation model (SEM). The empirical results revealed that the mobile mix (i.e. the independent variables) has a significant positive influence and relationship with experiential marketing (i.e. the mediating variables). On the other hand, experiential marketing was identified as having a significant positive influence on business value (i.e. the dependent variables). The majority of the respondents agreed concerning the variable items measuring experiential marketing and its influence on creating value to MNOs in Ghana. It is envisaged that the empirical evidence provided in this study could assist MNOs in Ghana in understanding the factors influencing experiential marketing and its role in creating value and, thereby, assist these businesses in strategy development and decision-making. This study provides relevant and practical recommendations that could make MNOs in Ghana generate sustainable long-term value. Thus, the objectives of this study were achieved, and the research problem was answered. This study could also act as a foundation for other studies, thereby contributing to the body of knowledge in this regard.
- Full Text:
- Date Issued: 2019
Nutritional and pharmacological profile of moringa oleifera lam. Leaves cultivated in the South African ecotype
- Authors: Yako, Zomsa
- Date: 2019
- Subjects: Moringa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14605 , vital:40021
- Description: Moringa oleifera Lam. is native to the Indian ecotype, which has become naturalized in many tropic and subtropic regions worldwide, thus a great variation in the bioactive compounds of the plant is recorded. The introduction of Moringa oleifera to South Africa occurred in the turn of the twentieth century with the aim of combating malnourishment, aiding health and fostering economic development. Therefore, this study was conducted with the aim of evaluating and authenticating the nutritional parameters, essential oil and bioactive components found in the various solvent extracts of Moringa oleifera leaves cultivated in the South African ecotype. It also elucidated some of the plants medicinal properties by investigating the antioxidant and antibacterial properties of the plant. The essential oil of the leaves was extracted using two methods (solvent free microwave extraction and hydrodistillation) and analysed using Gas Chromotography/Mass Spectrometer. The safety profile of the leaves was investigated using brine shrimp model. The results from the study revealed that Moringa oleifera leaves cultivated in South Africa were rich in crude protein levels (28.72%) and carbohydrate (28.84%). Among the minerals tested for, the leaves contained high content of calcium (1603.33 mg/100 g), potassium (1690 mg/100 g), zinc (13.03 mg/100 g) and iron (21.13 mg/100 g). The vitamin E content had the highest concentration (89.43 mg/100 g) among the vitamins evaluated. The leaves of Moringa oleifera had low quantities of antinutrients in relation to minerals, thus ensuring nutrients availability. This study identified 15 fatty acids in the dried leaves of Moringa. The highest fatty acid detected were polyunsaturated fatty acids, linoleic acid (56.36) and alpha-linolenic acid (687.58), 7 of the fatty acids were saturated fatty acids, though relatively low besides stearic acid. 15 amino acids were present, 7 of which were essential amino acids, namely; threonine, tyrosine, methionine, valine, phenylalanine, isoleucine and leucine. vi Among the phytochemicals evaluated, the aqueous extract gave the highest total phenolic content (21.01 ± 2.315 mg GAE/g), the acetone extract gave the highest proanthocyanidin (15.33 3.5 mg CE/g) and flavonoid contents (25.04±3.28 mg QE/g), while saponin and alkaloid contents were 27.73 ± 9.97% and 7.32 ± 2.73 % respectively. All the extracts exhibited high radical scavenging power against the 2,2- diphenyl-1-picrylhydrazyl radical with an IC50 less than 0.025 mg/mL. Aqueous extract gave the highest capacity based on ABTS and TAC assays with IC50 of 0.074 mg/ mL and 0.055 mg/mL respectively. Ethanol extract exhibited the least antioxidant capacity among the extracts, as well as the least antimicrobial activity on both Gram −ve and Gram +ve bacteria with all its minimum inhibitory concentration values greater than 5 mg/mL. The acetone extract exhibited the strongest antimicrobial activity among the extracts. A total of 8 and 24 chemical compounds were found from the solvent-free microwave extracted and hydrodistilled oils, respectively. The major components found from hydrodistillation were 2-Hexanal (16.37%), Nonanal (6.09%), 5 9-undecadien-2-one 6, 10 dimethyl- (e) - (8.01%), trans-beta-Ionone (8.02%) and octadecane (9.67%). For the solvent free microwave extracted oil, Benzene acetaldehyde (5.68%), Octadecane, Pentacosane and Eicosane which were 11.03%, were the major components. Toxicity evaluation revealed that mortality was time dependent. As the exposure period increased, mortality kept increasing. The hatching success of the cysts in acetone, aqueous and ethanol extracts were 35.7, 33.6 and 35.2% respectively. Acetone extract showed the most prominent hatching success. Hatchability and lethality were in a concentration dependent fashion. Among the extracts, acetone extract exhibited the highest lethality (12.3%) to the nauplii, followed by ethanol (10.9%), then aqueous (5.6%) extracts. All the results obtained from this study suggest that Moringa has the potential of eradicating malnutrition and aid health. It contains the necessary nutritional and bioactive compounds and the leaves proved not to be toxic at the levels (0.0625 – 1 mg/mL) tested.
- Full Text:
- Date Issued: 2019
- Authors: Yako, Zomsa
- Date: 2019
- Subjects: Moringa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14605 , vital:40021
- Description: Moringa oleifera Lam. is native to the Indian ecotype, which has become naturalized in many tropic and subtropic regions worldwide, thus a great variation in the bioactive compounds of the plant is recorded. The introduction of Moringa oleifera to South Africa occurred in the turn of the twentieth century with the aim of combating malnourishment, aiding health and fostering economic development. Therefore, this study was conducted with the aim of evaluating and authenticating the nutritional parameters, essential oil and bioactive components found in the various solvent extracts of Moringa oleifera leaves cultivated in the South African ecotype. It also elucidated some of the plants medicinal properties by investigating the antioxidant and antibacterial properties of the plant. The essential oil of the leaves was extracted using two methods (solvent free microwave extraction and hydrodistillation) and analysed using Gas Chromotography/Mass Spectrometer. The safety profile of the leaves was investigated using brine shrimp model. The results from the study revealed that Moringa oleifera leaves cultivated in South Africa were rich in crude protein levels (28.72%) and carbohydrate (28.84%). Among the minerals tested for, the leaves contained high content of calcium (1603.33 mg/100 g), potassium (1690 mg/100 g), zinc (13.03 mg/100 g) and iron (21.13 mg/100 g). The vitamin E content had the highest concentration (89.43 mg/100 g) among the vitamins evaluated. The leaves of Moringa oleifera had low quantities of antinutrients in relation to minerals, thus ensuring nutrients availability. This study identified 15 fatty acids in the dried leaves of Moringa. The highest fatty acid detected were polyunsaturated fatty acids, linoleic acid (56.36) and alpha-linolenic acid (687.58), 7 of the fatty acids were saturated fatty acids, though relatively low besides stearic acid. 15 amino acids were present, 7 of which were essential amino acids, namely; threonine, tyrosine, methionine, valine, phenylalanine, isoleucine and leucine. vi Among the phytochemicals evaluated, the aqueous extract gave the highest total phenolic content (21.01 ± 2.315 mg GAE/g), the acetone extract gave the highest proanthocyanidin (15.33 3.5 mg CE/g) and flavonoid contents (25.04±3.28 mg QE/g), while saponin and alkaloid contents were 27.73 ± 9.97% and 7.32 ± 2.73 % respectively. All the extracts exhibited high radical scavenging power against the 2,2- diphenyl-1-picrylhydrazyl radical with an IC50 less than 0.025 mg/mL. Aqueous extract gave the highest capacity based on ABTS and TAC assays with IC50 of 0.074 mg/ mL and 0.055 mg/mL respectively. Ethanol extract exhibited the least antioxidant capacity among the extracts, as well as the least antimicrobial activity on both Gram −ve and Gram +ve bacteria with all its minimum inhibitory concentration values greater than 5 mg/mL. The acetone extract exhibited the strongest antimicrobial activity among the extracts. A total of 8 and 24 chemical compounds were found from the solvent-free microwave extracted and hydrodistilled oils, respectively. The major components found from hydrodistillation were 2-Hexanal (16.37%), Nonanal (6.09%), 5 9-undecadien-2-one 6, 10 dimethyl- (e) - (8.01%), trans-beta-Ionone (8.02%) and octadecane (9.67%). For the solvent free microwave extracted oil, Benzene acetaldehyde (5.68%), Octadecane, Pentacosane and Eicosane which were 11.03%, were the major components. Toxicity evaluation revealed that mortality was time dependent. As the exposure period increased, mortality kept increasing. The hatching success of the cysts in acetone, aqueous and ethanol extracts were 35.7, 33.6 and 35.2% respectively. Acetone extract showed the most prominent hatching success. Hatchability and lethality were in a concentration dependent fashion. Among the extracts, acetone extract exhibited the highest lethality (12.3%) to the nauplii, followed by ethanol (10.9%), then aqueous (5.6%) extracts. All the results obtained from this study suggest that Moringa has the potential of eradicating malnutrition and aid health. It contains the necessary nutritional and bioactive compounds and the leaves proved not to be toxic at the levels (0.0625 – 1 mg/mL) tested.
- Full Text:
- Date Issued: 2019
Study habits and learning styles as correlates of grade 11 students’ academic performance in mathematical literacy in the Amathole Education District
- Authors: Yako, Mzwandile John-Mott
- Date: 2019
- Subjects: Academic performance
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/16687 , vital:40743
- Description: This study investigated whether there was correlation in study habits and learning styles with Mathematical Literacy among the Grade 11 (eleven) high school learners. The Amatole Education District was chosen for this study since it is composed of urban and rural schools. Since Mathematical Literacy was introduced in the system of education in South Africa with the understanding that learners who are finding it a challenge to study Mathematics be complemented with Mathematical Literacy to provide them with skills that are a prerequisite for tertiary level and participation in the economic development. The study purposed to establish whether there was a relationship between academic performance with study habits and learning styles in Mathematical Literacy. The study used the post-positivistic paradigm; the approach was quantitative and the design was descriptive correlational. In sampling probability, cluster sampling was used based on the number of high schools in the Amatole Education District of the Eastern Cape. It was then followed by sub-sampling of learners in Grade 11 (eleven) whose mathematical Literacy skills and performance were being investigated in this study. The theory of Covey on study habits and Kolb’s theory on learning styles were used as a theoretical framework for the study. The data collection instrument used was a closed-ended questionnaire based on a Likert scale measurement. Confidentiality and anonymity were emphasized with informed consent in place. Data was analyzed using SPSS software and Microsoft Excel. The results showed a significant relationship between note taking, writing skills and Mathematical Literacy skills and performance. The findings on the learning styles indicated no significant relationship between socio-demographic factors (visual language, visual numerical, auditory-numerical e.tc.) and academic performance in Mathematical Literacy. This research revealed that study habits had an impact on the academic performance of learners in mathematical literacy. This relationship between academic performance and study habits is an indication that learners needed to improve in their use of English as a second language, especially on note taking, writing skills and Mathematical Literacy.
- Full Text:
- Date Issued: 2019
- Authors: Yako, Mzwandile John-Mott
- Date: 2019
- Subjects: Academic performance
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/16687 , vital:40743
- Description: This study investigated whether there was correlation in study habits and learning styles with Mathematical Literacy among the Grade 11 (eleven) high school learners. The Amatole Education District was chosen for this study since it is composed of urban and rural schools. Since Mathematical Literacy was introduced in the system of education in South Africa with the understanding that learners who are finding it a challenge to study Mathematics be complemented with Mathematical Literacy to provide them with skills that are a prerequisite for tertiary level and participation in the economic development. The study purposed to establish whether there was a relationship between academic performance with study habits and learning styles in Mathematical Literacy. The study used the post-positivistic paradigm; the approach was quantitative and the design was descriptive correlational. In sampling probability, cluster sampling was used based on the number of high schools in the Amatole Education District of the Eastern Cape. It was then followed by sub-sampling of learners in Grade 11 (eleven) whose mathematical Literacy skills and performance were being investigated in this study. The theory of Covey on study habits and Kolb’s theory on learning styles were used as a theoretical framework for the study. The data collection instrument used was a closed-ended questionnaire based on a Likert scale measurement. Confidentiality and anonymity were emphasized with informed consent in place. Data was analyzed using SPSS software and Microsoft Excel. The results showed a significant relationship between note taking, writing skills and Mathematical Literacy skills and performance. The findings on the learning styles indicated no significant relationship between socio-demographic factors (visual language, visual numerical, auditory-numerical e.tc.) and academic performance in Mathematical Literacy. This research revealed that study habits had an impact on the academic performance of learners in mathematical literacy. This relationship between academic performance and study habits is an indication that learners needed to improve in their use of English as a second language, especially on note taking, writing skills and Mathematical Literacy.
- Full Text:
- Date Issued: 2019