The effectiveness of the Land Redistribution programme on women’s quality of life: A case of Buffalo City Municipality, Eastern Cape: a case of buffalo City Municipality, Eastern Cape
- Authors: Qayiso, Okuhle
- Date: 2021-12
- Subjects: Land reform -- South Africa -- Buffalo City , Women's rights -- South Africa -- Buffalo City
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54277 , vital:46392
- Description: The land question is a highly contentious issue in post-apartheid South Africa. Land is considered as a valuable resource for sustaining the livelihoods of people yet it remains one of the most sought after and contested resource in Africa owing to her colonial past. Black South Africans were also immensely subjected to land dispossession during the colonization by the Dutch and later the British and forced land removals during the apartheid era. Although this historical context from a lens of “race" is important to note here given how it shaped the South African geography of land ownership, there is nonetheless another dimension; that of gender. The main assertion driving this study is that due to a number of contextual factors (such as women's cultural status, economic inequality and poverty), land ownership between women and men is highly unequal whereby the former owns less and is mostly marginalized from land rights. This study thus looks at the extent to which land redistribution improves the quality of life for women in Buffalo City. The land redistribution program is part of the land reform policy which is a post-apartheid design and implemented for the purpose of redressing historical land dispossession and create redistributive land equality and tenure. This study employed a qualitative approach to ‘explore’ the experiences of women who are the beneficiaries of the land redistribution program as well as the perspectives of key informants who are the officials of the Rural Development and Reform Department. The thesis used an exploratory research design which was suitable for the understanding and unpacking of women's experiences with the land redistribution program. A major finding of this study is that the women who benefited from the land redistribution program have successfully progressed from small scale subsistence farming to large scale commercial farming, significantly improving their livelihoods. Nonetheless, the lack of financial capital is a critical challenge as the land redistribution program gives access to farms that need maintenance and renewal with financial grants that are barely enough for starting up. This study therefore argues that access to land should be accompanied by access to financial resources and capacity building to empower beneficiaries to use the land and other resources effectively and efficiently. It is recommended herein that the department should give beneficiaries full ownership of the land allocated to them as opposed to the thirty- year leasehold. , Thesis (MA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Qayiso, Okuhle
- Date: 2021-12
- Subjects: Land reform -- South Africa -- Buffalo City , Women's rights -- South Africa -- Buffalo City
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54277 , vital:46392
- Description: The land question is a highly contentious issue in post-apartheid South Africa. Land is considered as a valuable resource for sustaining the livelihoods of people yet it remains one of the most sought after and contested resource in Africa owing to her colonial past. Black South Africans were also immensely subjected to land dispossession during the colonization by the Dutch and later the British and forced land removals during the apartheid era. Although this historical context from a lens of “race" is important to note here given how it shaped the South African geography of land ownership, there is nonetheless another dimension; that of gender. The main assertion driving this study is that due to a number of contextual factors (such as women's cultural status, economic inequality and poverty), land ownership between women and men is highly unequal whereby the former owns less and is mostly marginalized from land rights. This study thus looks at the extent to which land redistribution improves the quality of life for women in Buffalo City. The land redistribution program is part of the land reform policy which is a post-apartheid design and implemented for the purpose of redressing historical land dispossession and create redistributive land equality and tenure. This study employed a qualitative approach to ‘explore’ the experiences of women who are the beneficiaries of the land redistribution program as well as the perspectives of key informants who are the officials of the Rural Development and Reform Department. The thesis used an exploratory research design which was suitable for the understanding and unpacking of women's experiences with the land redistribution program. A major finding of this study is that the women who benefited from the land redistribution program have successfully progressed from small scale subsistence farming to large scale commercial farming, significantly improving their livelihoods. Nonetheless, the lack of financial capital is a critical challenge as the land redistribution program gives access to farms that need maintenance and renewal with financial grants that are barely enough for starting up. This study therefore argues that access to land should be accompanied by access to financial resources and capacity building to empower beneficiaries to use the land and other resources effectively and efficiently. It is recommended herein that the department should give beneficiaries full ownership of the land allocated to them as opposed to the thirty- year leasehold. , Thesis (MA) -- Faculty of Business and Economic Sciences, 2021
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- Date Issued: 2021-12
Ifuthe lenkolo yobuKristu kulwimi lwesiXhosa
- Authors: Mwanda, Siyasanga Pulani
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54511 , vital:46617
- Description: Le ngxongxo iza kuthi ithethe ngefuthe lenkolo yobuKristu kulwimi lwesiXhosa. Akuyomfihlo ukuba ulwimi luthi lukhule okanye ludodobale ngenxa yendlela abantu bolwimi abaphila ngayo notshintsho oluthi lubekho kwindlela abaphila ngayo. AmaXhosa ke athi nawo aziswa kwinkolo yobuKristu. Le ngxoxo iza kuthi icacise ngokuthe gca ithiyori yeSimiyotiki esisiseko sesi sifundo, idakance iizimvo zeengcali zeSimiyotiki, ize ke iveze amagama amatsha ayengekho esiXhoseni mhla mnene, intsusa yalamagama nentsingiselo yawo. Okwesibini izakuthi ivelele intsingiselo yemiqondiso neempawu zobuKristu negalelo lazo kulwimi lwesiXhosa. Okokugqibela iza kuthi iveze izaci namaqhalo esiXhosa angobuKristu. , Thesis (MA) -- Faculty of Humanities, School of Language, Media and Communication, 2021
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- Date Issued: 2021-12
- Authors: Mwanda, Siyasanga Pulani
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54511 , vital:46617
- Description: Le ngxongxo iza kuthi ithethe ngefuthe lenkolo yobuKristu kulwimi lwesiXhosa. Akuyomfihlo ukuba ulwimi luthi lukhule okanye ludodobale ngenxa yendlela abantu bolwimi abaphila ngayo notshintsho oluthi lubekho kwindlela abaphila ngayo. AmaXhosa ke athi nawo aziswa kwinkolo yobuKristu. Le ngxoxo iza kuthi icacise ngokuthe gca ithiyori yeSimiyotiki esisiseko sesi sifundo, idakance iizimvo zeengcali zeSimiyotiki, ize ke iveze amagama amatsha ayengekho esiXhoseni mhla mnene, intsusa yalamagama nentsingiselo yawo. Okwesibini izakuthi ivelele intsingiselo yemiqondiso neempawu zobuKristu negalelo lazo kulwimi lwesiXhosa. Okokugqibela iza kuthi iveze izaci namaqhalo esiXhosa angobuKristu. , Thesis (MA) -- Faculty of Humanities, School of Language, Media and Communication, 2021
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- Date Issued: 2021-12
Representations of trauma by three women writers from the global south
- Authors: Pabel, Annemarie Luise
- Date: 2020-04
- Subjects: Women authors (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctor's theses , text
- Identifier: http://hdl.handle.net/10948/55128 , vital:49131
- Description: This study examines modalities of psychological trauma in selected works by three women writers from the global South: the Scottish-Sierra Leonean writer Aminatta Forna, the ChileanAmerican author Isabel Allende and Anuradha Roy from India. It aims to examine textual manifestations of complex and prolonged experiences of trauma and the ways in which literary forms facilitate such representations. Specifically, I am interested in multi-layered and interrelated forms of trauma which exceed the conventional, event-based conceptualization of trauma as an “overwhelming experience of sudden or catastrophic events” (Caruth 1996:11). 1 Such experiences include war, exile, extensive childhood sexual abuse, maternal bereavement and familial disintegration. I have selected three texts from each author’s body of literary work: Forna’s memoir The Devil that Danced on the Water: a Daughter’s Quest (2003) and her novels The Memory of Love (2010) and Happiness (2010), Allende’s memoirs Paula (1994), My Invented Country (2004) and Portrait in Sepia (2000) and Roy’s novels An Atlas of Impossible Longing (2008), Sleeping on Jupiter (2015) and All the Lives We Never Lived (2018). The study’s focus on women writers from different contexts in the global South is motivated by an imbalance in critical attention and validation extreme forms of suffering receive globally. , Thesis (PhD) -- Faculty of Humanities, School of Language, Media and Communication, 2020
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- Date Issued: 2020-04
- Authors: Pabel, Annemarie Luise
- Date: 2020-04
- Subjects: Women authors (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctor's theses , text
- Identifier: http://hdl.handle.net/10948/55128 , vital:49131
- Description: This study examines modalities of psychological trauma in selected works by three women writers from the global South: the Scottish-Sierra Leonean writer Aminatta Forna, the ChileanAmerican author Isabel Allende and Anuradha Roy from India. It aims to examine textual manifestations of complex and prolonged experiences of trauma and the ways in which literary forms facilitate such representations. Specifically, I am interested in multi-layered and interrelated forms of trauma which exceed the conventional, event-based conceptualization of trauma as an “overwhelming experience of sudden or catastrophic events” (Caruth 1996:11). 1 Such experiences include war, exile, extensive childhood sexual abuse, maternal bereavement and familial disintegration. I have selected three texts from each author’s body of literary work: Forna’s memoir The Devil that Danced on the Water: a Daughter’s Quest (2003) and her novels The Memory of Love (2010) and Happiness (2010), Allende’s memoirs Paula (1994), My Invented Country (2004) and Portrait in Sepia (2000) and Roy’s novels An Atlas of Impossible Longing (2008), Sleeping on Jupiter (2015) and All the Lives We Never Lived (2018). The study’s focus on women writers from different contexts in the global South is motivated by an imbalance in critical attention and validation extreme forms of suffering receive globally. , Thesis (PhD) -- Faculty of Humanities, School of Language, Media and Communication, 2020
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- Date Issued: 2020-04
Main thesis title
- Authors: Tsamago, Hodi, Elias
- Date: 2022-12
- Subjects: Technology integration , SOLEs pedagogy , Metacognitive
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60549 , vital:65833
- Description: The study was carried out to investigate the effect of the use of technology in self-organised learning environments (SOLEs) (in Physical Sciences classrooms) on learners’ metacognitive skills. The study contributes by identifying a technology-enhanced pedagogy that can effectively equip learners with metacognitive skills, which many studies have reported as having an effect on Physical Sciences learners’ conceptual understanding. The study followed an experimental (control group quasi-experimental) methods design, in which both qualitative and quantitative data were collected and analysed. A multistep stratified sampling method (which caters for both quantitative and qualitative facets) was employed to choose four schools (two rural and two urban) to participate in the study. These schools were randomly chosen from the population of all schools offering Physical Sciences in Grade 11 in the Capricorn District of Limpopo Province, South Africa were assigned to urban experimental group and rural experimental group (UEG and REG) and urban control group and rural control group (UCG and RCG) using geographical demographics. The participants were selected using both simple random sampling (for quantitative methods) and purposive sampling (for qualitative methods). The experimental groups were taught by the researcher using self-organised learning environments (SOLEs) pedagogy, while control groups were taught (also by the researcher of the study) using a traditional chalk-and-talk approach. A Physical Sciences concepts pre-/post-test and the Metacognitive Self-Assessment Scale (MSAS) questionnaire were used to glean the quantitative data, while focus group interviews (FGIs) were used to obtain the qualitative data. The analysis of the quantitative data employed both descriptive (mean, standard deviation and graphs) and inferential (both parametric t-test and non-parametric Kruskal-Wallis and Wilcoxon signed-rank tests) statistics computed using the SPSS package version 22, while qualitative data were analysed thematically using coding techniques (applied on a sentence-by-sentence basis) after the transcription of the recorded FGIs. The study found that SOLEs pedagogy improves learners’ metacognitive skills, leading to better Physical Sciences conceptual understanding. In addition, the results indicate that all v aspects of metacognitive skills improved in experimental groups; however, certain aspects exhibited outstanding improvement such as “Respect shown to myself”; “Respect shown to others”; “Respect shown for empathy towards others” and “Respect shown towards problem solving”. Furthermore, the results of the FGIs revealed that a plausible explanation for the ability of SOLEs pedagogy to enhance metacognitive skills lies in its effortlessness to enable learners to link their classroom experiences to real-life experiences; simulate practical work; adapt to collaborative learning; use multiple channels for receiving information; and reducing learners’ reliance on the teacher. Hence, this study recommends the implementation of SOLEs pedagogy in the Physical Sciences classroom to improve learners’ metacognitive skills and conceptual understanding. However, the study had limitations, some of which included the sample size (which has an effect on the degree of generalisability of the research findings) and the period during which SOLEs pedagogy was implemented which might not have been long enough to exhaust its effect on metacognitive skills. Accordingly, further studies employing a longitudinal study design with a sample size bigger than 350 participants would be useful in understanding the effects of SOLEs pedagogy on metacognitive skills and improving the generalisability of research findings , Thesis (PhD) -- Faculty of education, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Tsamago, Hodi, Elias
- Date: 2022-12
- Subjects: Technology integration , SOLEs pedagogy , Metacognitive
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60549 , vital:65833
- Description: The study was carried out to investigate the effect of the use of technology in self-organised learning environments (SOLEs) (in Physical Sciences classrooms) on learners’ metacognitive skills. The study contributes by identifying a technology-enhanced pedagogy that can effectively equip learners with metacognitive skills, which many studies have reported as having an effect on Physical Sciences learners’ conceptual understanding. The study followed an experimental (control group quasi-experimental) methods design, in which both qualitative and quantitative data were collected and analysed. A multistep stratified sampling method (which caters for both quantitative and qualitative facets) was employed to choose four schools (two rural and two urban) to participate in the study. These schools were randomly chosen from the population of all schools offering Physical Sciences in Grade 11 in the Capricorn District of Limpopo Province, South Africa were assigned to urban experimental group and rural experimental group (UEG and REG) and urban control group and rural control group (UCG and RCG) using geographical demographics. The participants were selected using both simple random sampling (for quantitative methods) and purposive sampling (for qualitative methods). The experimental groups were taught by the researcher using self-organised learning environments (SOLEs) pedagogy, while control groups were taught (also by the researcher of the study) using a traditional chalk-and-talk approach. A Physical Sciences concepts pre-/post-test and the Metacognitive Self-Assessment Scale (MSAS) questionnaire were used to glean the quantitative data, while focus group interviews (FGIs) were used to obtain the qualitative data. The analysis of the quantitative data employed both descriptive (mean, standard deviation and graphs) and inferential (both parametric t-test and non-parametric Kruskal-Wallis and Wilcoxon signed-rank tests) statistics computed using the SPSS package version 22, while qualitative data were analysed thematically using coding techniques (applied on a sentence-by-sentence basis) after the transcription of the recorded FGIs. The study found that SOLEs pedagogy improves learners’ metacognitive skills, leading to better Physical Sciences conceptual understanding. In addition, the results indicate that all v aspects of metacognitive skills improved in experimental groups; however, certain aspects exhibited outstanding improvement such as “Respect shown to myself”; “Respect shown to others”; “Respect shown for empathy towards others” and “Respect shown towards problem solving”. Furthermore, the results of the FGIs revealed that a plausible explanation for the ability of SOLEs pedagogy to enhance metacognitive skills lies in its effortlessness to enable learners to link their classroom experiences to real-life experiences; simulate practical work; adapt to collaborative learning; use multiple channels for receiving information; and reducing learners’ reliance on the teacher. Hence, this study recommends the implementation of SOLEs pedagogy in the Physical Sciences classroom to improve learners’ metacognitive skills and conceptual understanding. However, the study had limitations, some of which included the sample size (which has an effect on the degree of generalisability of the research findings) and the period during which SOLEs pedagogy was implemented which might not have been long enough to exhaust its effect on metacognitive skills. Accordingly, further studies employing a longitudinal study design with a sample size bigger than 350 participants would be useful in understanding the effects of SOLEs pedagogy on metacognitive skills and improving the generalisability of research findings , Thesis (PhD) -- Faculty of education, 2022
- Full Text:
- Date Issued: 2022-12
A framework for the successful management of the service suppliers in the public sector in South Africa
- Authors: Fudu, Anele George
- Date: 2021-04
- Subjects: Management , Business logistics , Government business enterprises -- Management
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/51411 , vital:43272
- Description: The Public sector outsources the service to the private service suppliers through tendering and the awarding of contracts to the successful service providers. There is a lot of money budgeted and spent on service providers; therefore, there is a great need to manage the service providers successfully, in order to deliver a reliable service to the community; and to reduce the cost thereof. The study focused on the successful management of the service suppliers, in order to deliver contract deliverables. Poor performance of the service providers might well lead to schedule overruns, contract over-expenditure and contract cancellations. Inadequate performance management causes service suppliers not to perform at their optimum level. The study aimed to contribute to the development of the framework for performance management of the service suppliers in the public sector in South Africa. The primary objectives of the study were to investigate and develop a framework for managing and enhancing the performance of the service suppliers in the public sector. More specifically, the study investigated the influence of scope of work, a contract strategy, performance management, risk management and change management. The study sought to formulate a structured and practical approach on how to manage service suppliers to the public sector. The study will seek to understand what influences the success for the win-win approach in the Public Sector and Services Suppliers – so that both parties can see themselves as partners in the delivery of the services. The sample consists of 70 employees across all the public sector in South Africa, which consists of national government, provincial municipalities, district municipalities, local government and State-owned companies. The study targeted those respondents involved in the management of the service suppliers to the public study. The empirical results show that the management of the service providers’ performance in the public sector is critical to the service delivery and the management of the final cost. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business Administration, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Fudu, Anele George
- Date: 2021-04
- Subjects: Management , Business logistics , Government business enterprises -- Management
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/51411 , vital:43272
- Description: The Public sector outsources the service to the private service suppliers through tendering and the awarding of contracts to the successful service providers. There is a lot of money budgeted and spent on service providers; therefore, there is a great need to manage the service providers successfully, in order to deliver a reliable service to the community; and to reduce the cost thereof. The study focused on the successful management of the service suppliers, in order to deliver contract deliverables. Poor performance of the service providers might well lead to schedule overruns, contract over-expenditure and contract cancellations. Inadequate performance management causes service suppliers not to perform at their optimum level. The study aimed to contribute to the development of the framework for performance management of the service suppliers in the public sector in South Africa. The primary objectives of the study were to investigate and develop a framework for managing and enhancing the performance of the service suppliers in the public sector. More specifically, the study investigated the influence of scope of work, a contract strategy, performance management, risk management and change management. The study sought to formulate a structured and practical approach on how to manage service suppliers to the public sector. The study will seek to understand what influences the success for the win-win approach in the Public Sector and Services Suppliers – so that both parties can see themselves as partners in the delivery of the services. The sample consists of 70 employees across all the public sector in South Africa, which consists of national government, provincial municipalities, district municipalities, local government and State-owned companies. The study targeted those respondents involved in the management of the service suppliers to the public study. The empirical results show that the management of the service providers’ performance in the public sector is critical to the service delivery and the management of the final cost. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business Administration, 2021
- Full Text:
- Date Issued: 2021-04
Spatial modelling of accessibility to tuberculosis treatment: the case of Ngaka Modiri Molema District
- Authors: Ramotsongwa, Karabo Naome
- Date: 2022-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55435 , vital:52000
- Description: Accessibility to healthcare refers to the availability, or the provision of healthcare-byhealthcare professionals and stakeholders and individuals' ability to obtain care and treatment. It affects overall physical, social, and mental health; disease and disability prevention; detection and treatment of health conditions; standard of living; preventable death; and life expectancy, and it is crucial to the performance of health care systems around the world. If healthcare services are available and are in sufficient supply, people will be able to seek health care, and a population will have access to services. The leading cause of death globally is Tuberculosis (TB) and South Africa is amongst the top 5 countries most affected by TB. This is aggravated by high HIV/AIDS statistics. Children belowthe age of 4, between the ages of 4- 15, and women and men of working ages are highly affected by TB and it is the primary cause of death in these groups in the Ngaka Modiri Molema District. This study used study tools like Spatial Modelling, Geographic Information Systems and software like ArcGIS 10.5, TerrSet IDRISI 18.30, and secondary data from the North West Departmentof Health (Tier.net &DHIS) and also TB patients’ home addresses to investigate the accessibility of TB treatment in Ngaka Modiri Molema, in order to spatially visualize the distribution of a communicable disease like TB and public healthcare facilities in the Ngaka Modiri Molema (NMM) District and suggest optimum sites for hospital facilities. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-04
- Authors: Ramotsongwa, Karabo Naome
- Date: 2022-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55435 , vital:52000
- Description: Accessibility to healthcare refers to the availability, or the provision of healthcare-byhealthcare professionals and stakeholders and individuals' ability to obtain care and treatment. It affects overall physical, social, and mental health; disease and disability prevention; detection and treatment of health conditions; standard of living; preventable death; and life expectancy, and it is crucial to the performance of health care systems around the world. If healthcare services are available and are in sufficient supply, people will be able to seek health care, and a population will have access to services. The leading cause of death globally is Tuberculosis (TB) and South Africa is amongst the top 5 countries most affected by TB. This is aggravated by high HIV/AIDS statistics. Children belowthe age of 4, between the ages of 4- 15, and women and men of working ages are highly affected by TB and it is the primary cause of death in these groups in the Ngaka Modiri Molema District. This study used study tools like Spatial Modelling, Geographic Information Systems and software like ArcGIS 10.5, TerrSet IDRISI 18.30, and secondary data from the North West Departmentof Health (Tier.net &DHIS) and also TB patients’ home addresses to investigate the accessibility of TB treatment in Ngaka Modiri Molema, in order to spatially visualize the distribution of a communicable disease like TB and public healthcare facilities in the Ngaka Modiri Molema (NMM) District and suggest optimum sites for hospital facilities. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-04
Applying insights from machine learning towards guidelines for the detection of text-based fake news
- Authors: Ngada, Okuhle
- Date: 2021-12
- Subjects: Machine learning , Fake News
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60243 , vital:64141
- Description: Web-based technologies have fostered an online environment where information can be disseminated in a fast and cost-effective manner whilst targeting large and diverse audiences. Unfortunately, the rise and evolution of web-based technologies have also created an environment where false information, commonly referred to as “fake news”, spreads rapidly. The effects of this spread can be catastrophic. Finding solutions to the problem of fake news is complicated for a myriad of reasons, such as: what is defined as fake news, the lack of quality datasets available to researchers, the topics covered in such data, and the fact that datasets exist in a variety of languages. The effects of false information dissemination can result in reputational damage, financial damage to affected brands, and ultimately, misinformed online news readers who can make misinformed decisions. The objective of the study is to propose a set of guidelines that can be used by other system developers to implement misinformation detection tools and systems. The guidelines are constructed using findings from the experimentation phase of the project and information uncovered in the literature review conducted as part of the study. A selection of machine and deep learning approaches are examined to test the applicability of cues that could separate fake online articles from real online news articles. Key performance metrics such as precision, recall, accuracy, F1-score, and ROC are used to measure the performance of the selected machine learning and deep learning models. To demonstrate the practicality of the guidelines and allow for reproducibility of the research, each guideline provides background information relating to the identified problem, a solution to the problem through pseudocode, code excerpts using the Python programming language, and points of consideration that may assist with the implementation. , Thesis (MA) --Faculty of Engineering, the Built Environment, and Technology, 2021
- Full Text:
- Date Issued: 2021-12
Applying insights from machine learning towards guidelines for the detection of text-based fake news
- Authors: Ngada, Okuhle
- Date: 2021-12
- Subjects: Machine learning , Fake News
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60243 , vital:64141
- Description: Web-based technologies have fostered an online environment where information can be disseminated in a fast and cost-effective manner whilst targeting large and diverse audiences. Unfortunately, the rise and evolution of web-based technologies have also created an environment where false information, commonly referred to as “fake news”, spreads rapidly. The effects of this spread can be catastrophic. Finding solutions to the problem of fake news is complicated for a myriad of reasons, such as: what is defined as fake news, the lack of quality datasets available to researchers, the topics covered in such data, and the fact that datasets exist in a variety of languages. The effects of false information dissemination can result in reputational damage, financial damage to affected brands, and ultimately, misinformed online news readers who can make misinformed decisions. The objective of the study is to propose a set of guidelines that can be used by other system developers to implement misinformation detection tools and systems. The guidelines are constructed using findings from the experimentation phase of the project and information uncovered in the literature review conducted as part of the study. A selection of machine and deep learning approaches are examined to test the applicability of cues that could separate fake online articles from real online news articles. Key performance metrics such as precision, recall, accuracy, F1-score, and ROC are used to measure the performance of the selected machine learning and deep learning models. To demonstrate the practicality of the guidelines and allow for reproducibility of the research, each guideline provides background information relating to the identified problem, a solution to the problem through pseudocode, code excerpts using the Python programming language, and points of consideration that may assist with the implementation. , Thesis (MA) --Faculty of Engineering, the Built Environment, and Technology, 2021
- Full Text:
- Date Issued: 2021-12
Perceived success of skills-development readiness within 4IR in RSA
- Authors: Hunt, Norman William
- Date: 2021-04
- Subjects: Technological innovations -- Economic aspects , Labor demand -- Research -- South Africa , Labor supply -- Research -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/51567 , vital:43310
- Description: The purpose of this study was to develop four scenarios for South Africa over the next forty years. The Positive Seed scenario portrays a positive image of hope and determination, with positive institutional innovations, as well as positive innovative learning methodologies. While the Shankar scenario also portrays positive institutional innovations, it is lacking in terms of innovation learning methodologies. The Negative Seed is lacking in both innovation learning methodologies, as well as institutional innovations. Finally, the fourth scenario, that of the ‘What If’ scenario, portrays a scenario whether good innovative learning methodologies exist, or not, but lacks institutional innovativeness. The goal of this thesis was not only to affirm the known and knowable about the skills-development environment, but it is also aimed at exploring its future within the 4IR towards 2060. This was achieved by scenario planning and the Causal Layered Analyses (CLA) methodology, which is designed to help navigate through this creative process. This thesis starts off by identifying the forces of change, which it then combines in various ways to create the set of scenarios about how the future of the skills-development sector could evolve towards 2060. This thesis provides useful insight into drivers for change for the South African skills-development sector and how to anticipate skills-readiness in South Africa within the 4IR towards 2060 in accordance with the CLA and scenario planning methods. This thesis looks at the future of skills-development in South Africa over the next forty years from a decision makers point of view. , Thesis (DBA) -- Faculty of Business and Economic Sciences, Business Administration, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Hunt, Norman William
- Date: 2021-04
- Subjects: Technological innovations -- Economic aspects , Labor demand -- Research -- South Africa , Labor supply -- Research -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/51567 , vital:43310
- Description: The purpose of this study was to develop four scenarios for South Africa over the next forty years. The Positive Seed scenario portrays a positive image of hope and determination, with positive institutional innovations, as well as positive innovative learning methodologies. While the Shankar scenario also portrays positive institutional innovations, it is lacking in terms of innovation learning methodologies. The Negative Seed is lacking in both innovation learning methodologies, as well as institutional innovations. Finally, the fourth scenario, that of the ‘What If’ scenario, portrays a scenario whether good innovative learning methodologies exist, or not, but lacks institutional innovativeness. The goal of this thesis was not only to affirm the known and knowable about the skills-development environment, but it is also aimed at exploring its future within the 4IR towards 2060. This was achieved by scenario planning and the Causal Layered Analyses (CLA) methodology, which is designed to help navigate through this creative process. This thesis starts off by identifying the forces of change, which it then combines in various ways to create the set of scenarios about how the future of the skills-development sector could evolve towards 2060. This thesis provides useful insight into drivers for change for the South African skills-development sector and how to anticipate skills-readiness in South Africa within the 4IR towards 2060 in accordance with the CLA and scenario planning methods. This thesis looks at the future of skills-development in South Africa over the next forty years from a decision makers point of view. , Thesis (DBA) -- Faculty of Business and Economic Sciences, Business Administration, 2021
- Full Text:
- Date Issued: 2021-04
Assessing service delivery protests in the Nelson Mandela Bay Municipality: the case of Walmer Township
- Authors: Mdanyana, Esethu
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54492 , vital:46609
- Description: In many South Africa’s areas, citizen’s frustration with poor or slow service delivery has resulted in a surge of service delivery protests. Some of these service delivery protests are violent in nature, resulting in the damage of public and private property. Therefore, it is imperative to scrutinize service delivery protests. The South African constitution states that municipalities have the responsibility to make sure that all citizens are provided with services to satisfy their basic needs. These services include water supply, sewage collection and disposal electricity, gas supply health services, roads, storm water drainage, street lighting, municipal parks and recreation. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text: false
- Date Issued: 2021-12
- Authors: Mdanyana, Esethu
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54492 , vital:46609
- Description: In many South Africa’s areas, citizen’s frustration with poor or slow service delivery has resulted in a surge of service delivery protests. Some of these service delivery protests are violent in nature, resulting in the damage of public and private property. Therefore, it is imperative to scrutinize service delivery protests. The South African constitution states that municipalities have the responsibility to make sure that all citizens are provided with services to satisfy their basic needs. These services include water supply, sewage collection and disposal electricity, gas supply health services, roads, storm water drainage, street lighting, municipal parks and recreation. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text: false
- Date Issued: 2021-12
Re-imagining Afrikaner masculinity through conceptual fashion design
- Authors: Smit, Dalton
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54563 , vital:46708
- Description: Traditional Afrikaner culture has often been associated with conservative beliefs, giving patriarchal figures such as the husband and father superior status. Although South Africa has undergone social progression, large numbers in Afrikaner communities still live according to old, patriarchal norms. My perceptions of Afrikaner masculinity, informed by my cultural background, enforce patriarchy's functioning in some Afrikaner homes, allowing the development of rigid expectations of a male's self-expression. These mind-sets of what masculinity is do not align with my values, beliefs, and the visual presentation of my identity. With the application of autoethnographic inquiry in this practice-based study, I was able to analyse and interpret the nuanced discrimination against the performance of my male identity in an Afrikaner cultural context. I implemented autoethnographic and practice-based methods to respond to and challenge outdated and conservative views regarding the prevalence of Afrikaner masculine ideals and their negative implications. The contribution of the research practice is FYN BOI, a fictive persona constructed and performed by me. He represents a liberated facet of my identity whose reaction is rejection against the Afrikaner cultural opinions of me, and in turn, is fuelled by the criticism to provoke further and challenge these views. The conceptual garments created are considered his wardrobe, which he uses in his self-expression online. With this unconventional approach to a fashion study, disseminating the research practice online instead of a physical exhibition allows for the study to be accessed to audiences beyond academia's domain. This undertaking intends to contribute to the existing discourse of masculinity and prejudice against individuals' self-expression of their identity. , Thesis (MA) -- Faculty of Humanities, School of Visual and Performing Arts, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Smit, Dalton
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54563 , vital:46708
- Description: Traditional Afrikaner culture has often been associated with conservative beliefs, giving patriarchal figures such as the husband and father superior status. Although South Africa has undergone social progression, large numbers in Afrikaner communities still live according to old, patriarchal norms. My perceptions of Afrikaner masculinity, informed by my cultural background, enforce patriarchy's functioning in some Afrikaner homes, allowing the development of rigid expectations of a male's self-expression. These mind-sets of what masculinity is do not align with my values, beliefs, and the visual presentation of my identity. With the application of autoethnographic inquiry in this practice-based study, I was able to analyse and interpret the nuanced discrimination against the performance of my male identity in an Afrikaner cultural context. I implemented autoethnographic and practice-based methods to respond to and challenge outdated and conservative views regarding the prevalence of Afrikaner masculine ideals and their negative implications. The contribution of the research practice is FYN BOI, a fictive persona constructed and performed by me. He represents a liberated facet of my identity whose reaction is rejection against the Afrikaner cultural opinions of me, and in turn, is fuelled by the criticism to provoke further and challenge these views. The conceptual garments created are considered his wardrobe, which he uses in his self-expression online. With this unconventional approach to a fashion study, disseminating the research practice online instead of a physical exhibition allows for the study to be accessed to audiences beyond academia's domain. This undertaking intends to contribute to the existing discourse of masculinity and prejudice against individuals' self-expression of their identity. , Thesis (MA) -- Faculty of Humanities, School of Visual and Performing Arts, 2021
- Full Text:
- Date Issued: 2021-12
What is the future of financial inclusion?
- Authors: Mago, Stephen
- Subjects: Financial services industry -- Africa , Banks and banking -- Africa , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/56481 , vital:56688
- Description: The purpose of this lecture is to explicate the future of financial inclusion with a focus on Africa. Understanding financial inclusion, its advantages, and its trajectory into the future sets a scene for future research and debates. Materials and methods: In preparing this lecture, I used systematic literature and bibliometric analysis complemented with field research done in two selected areas (Masvingo district in Zimbabwe and the Kirkwood area in the Eastern Cape, South Africa). Results/Findings: Results show that financial inclusion benefits poverty alleviation, job/employment creation, small business growth (through innovation and creativity), sustainability, closing inequality gaps, inclusive economic growth and development (local, national, regional, and global), closing gender gaps, and the promotion of digital finance. In other words, it creates opportunities for individuals, businesses, and economies in various ways. It also contributes to the attainment of sustainable development goals (SDGs). Globally, stakeholders such as governments, supranational organisations (the UN, the WB, the IMF, the G20) and development banks are working together to achieve financial inclusion. Alleviation or elimination of financial exclusion (FE) is the ultimate. Social implications: Financial inclusion promotes socio-economic transformation and livelihood enhancement. The unbanked, or the financially excluded, and the underbanked benefit from financial inclusion, thus allowing them access to financial services. Conclusions and recommendations: Extant literature and empirical research demonstrate the immense contribution of financial inclusion. It helps to defy the triple challenges of poverty, unemployment, and inequality. This lecture therefore recommends deliberate policy intentions by governments in developing countries to support financial inclusion to benefit the marginalised and promote the attainment of Sustainable Development Goals(SDGs). There is a need to digitise the financial systems for inclusivity. I argue that the future of financial inclusion is achieved not only by technology, but also by acceptance, behaviour, and collaboration/synergy, built around strong ecosystems. An underlying thesis is that financial inclusion benefits economies in many ways.
- Full Text:
- Authors: Mago, Stephen
- Subjects: Financial services industry -- Africa , Banks and banking -- Africa , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/56481 , vital:56688
- Description: The purpose of this lecture is to explicate the future of financial inclusion with a focus on Africa. Understanding financial inclusion, its advantages, and its trajectory into the future sets a scene for future research and debates. Materials and methods: In preparing this lecture, I used systematic literature and bibliometric analysis complemented with field research done in two selected areas (Masvingo district in Zimbabwe and the Kirkwood area in the Eastern Cape, South Africa). Results/Findings: Results show that financial inclusion benefits poverty alleviation, job/employment creation, small business growth (through innovation and creativity), sustainability, closing inequality gaps, inclusive economic growth and development (local, national, regional, and global), closing gender gaps, and the promotion of digital finance. In other words, it creates opportunities for individuals, businesses, and economies in various ways. It also contributes to the attainment of sustainable development goals (SDGs). Globally, stakeholders such as governments, supranational organisations (the UN, the WB, the IMF, the G20) and development banks are working together to achieve financial inclusion. Alleviation or elimination of financial exclusion (FE) is the ultimate. Social implications: Financial inclusion promotes socio-economic transformation and livelihood enhancement. The unbanked, or the financially excluded, and the underbanked benefit from financial inclusion, thus allowing them access to financial services. Conclusions and recommendations: Extant literature and empirical research demonstrate the immense contribution of financial inclusion. It helps to defy the triple challenges of poverty, unemployment, and inequality. This lecture therefore recommends deliberate policy intentions by governments in developing countries to support financial inclusion to benefit the marginalised and promote the attainment of Sustainable Development Goals(SDGs). There is a need to digitise the financial systems for inclusivity. I argue that the future of financial inclusion is achieved not only by technology, but also by acceptance, behaviour, and collaboration/synergy, built around strong ecosystems. An underlying thesis is that financial inclusion benefits economies in many ways.
- Full Text:
The role of local economic development in poverty alleviation: a case of Buffalo City Metropolitan Municipality
- Authors: Mkanyeli, Vuyokazi
- Date: 2021-04
- Subjects: Economic development -- South Africa -- Buffalo City , Poverty -- Economic aspects -- South Africa -- Buffalo City
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53478 , vital:45157
- Description: The primary purpose of Local Economic Development is centred on the improvement of the quality of life for all. Thus, LED plays a fundamental role in poverty alleviation in communities, if utilised effectively and efficiently. The present study was conducted in Buffalo City Metropolitan Municipality, which is located in the Eastern Cape Province of South Africa. The chosen case study is characterised by high unemployment and poverty. Thus, this study explored the role of LED strategies in alleviating poverty within the municipality. The study adopted a qualitative research methodology with the use of a case study research design. Data was collected through interviews with LED officials within the municipality and analysed through thematic analysis. The study findings showed that in as much as the BCMM is characterised by poverty, it strives to alleviate poverty through employing various LED strategies such as agriculture, tourism, Small, Medium and Micro Enterprises, and the Metro Growth and Development Strategy. The findings also revealed that the municipality is confronted with a myriad of challenges that hinder effective implementation of these strategies. If the strategies are effectively implemented, the study participants argued that it will result in job creation, income generation and skills development. The challenges include limited resources, lack of investments, lack of skilled personnel and lack of connectivity. The study recommends infrastructure development, establishment of mechanisms to attract investments and focusing more on building capabilities. The municipality should also implement more LED strategies as well as engage in more partnerships. This will ensure poverty alleviation within the Buffalo City Metropolitan Municipality. , Thesis (MPA) -- Faculty of Humanities, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Mkanyeli, Vuyokazi
- Date: 2021-04
- Subjects: Economic development -- South Africa -- Buffalo City , Poverty -- Economic aspects -- South Africa -- Buffalo City
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53478 , vital:45157
- Description: The primary purpose of Local Economic Development is centred on the improvement of the quality of life for all. Thus, LED plays a fundamental role in poverty alleviation in communities, if utilised effectively and efficiently. The present study was conducted in Buffalo City Metropolitan Municipality, which is located in the Eastern Cape Province of South Africa. The chosen case study is characterised by high unemployment and poverty. Thus, this study explored the role of LED strategies in alleviating poverty within the municipality. The study adopted a qualitative research methodology with the use of a case study research design. Data was collected through interviews with LED officials within the municipality and analysed through thematic analysis. The study findings showed that in as much as the BCMM is characterised by poverty, it strives to alleviate poverty through employing various LED strategies such as agriculture, tourism, Small, Medium and Micro Enterprises, and the Metro Growth and Development Strategy. The findings also revealed that the municipality is confronted with a myriad of challenges that hinder effective implementation of these strategies. If the strategies are effectively implemented, the study participants argued that it will result in job creation, income generation and skills development. The challenges include limited resources, lack of investments, lack of skilled personnel and lack of connectivity. The study recommends infrastructure development, establishment of mechanisms to attract investments and focusing more on building capabilities. The municipality should also implement more LED strategies as well as engage in more partnerships. This will ensure poverty alleviation within the Buffalo City Metropolitan Municipality. , Thesis (MPA) -- Faculty of Humanities, 2021
- Full Text:
- Date Issued: 2021-04
Perceptions of mental illness among the residents of the Eastern Cape Province in South Africa: The influence of culture and religion on their coping strategies.: subtitle if needed. If no subtitle follow instructions in manual
- Authors: Sikrweqe, Odwa
- Date: 2023-04
- Subjects: Mental illness , Mental illness--Religious aspects , Mental illness-- Culture aspects
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60445 , vital:65507
- Description: Mental illness has become a global concern, with consequences that may result in a mental health pandemic. Studies conducted on mental illness suggest that religious and cultural beliefs not only affect the expression of mental illness, but also the diagnosis and treatment of mental conditions. South Africa is a country imbued with cultural and religious diversity, which creates different groupings of people, holding diverse beliefs regarding mental illness. In many contexts, supernatural beliefs, traditional healing and indigenous medicines and treatments are considered in the treatment of the symptoms associated with mental illnesses, especially on contexts where there is a reliance on religio-cultural beliefs. Even though there has been a significant increase in the contribution to research focusing on mental health in diverse contexts, much of this research has focused on subjective experiences. Little to no information is available on population-based studies in South Africa regarding mental illness in diverse contexts, thus limiting the generalisation of findings related to cultural and religious influences on mental illness. This dearth of information further limits the development of psychological interventions. The study aimed to explore how mental illness is perceived by the participants and thereafter explored the influence of culture and religion in coping with mental illness by the residents of the Eastern Cape. The study was quantitative in nature and adopted an exploratory-descriptive design. The researcher made use of a questionnaire as a research tool and QuestionPro was utilized as a platform. A convenience sampling technique was utilised. In ensuring rigour of the study, the researcher ensured maximal validity (accurate representation of the data) and reliability (ability to repeat the research procedure). Ethical principles have been adhered to as per the principles on the Belmont Report, to ensure safety of the participants and this includes anonymity, confidentiality and the right to withdraw from participation in the study. Data has been analysed using descriptive and inferential statistics. A sample size of 101 participants from the general population of residents of the Eastern Cape completed the online survey. The results of the study revealed that the residents of the Eastern Cape have substantial knowledge pertaining the cause of mental illness and indicated both positive and negative attitudes towards the mentally ill and possess coping strategies to deal with a mental illness. In addition, the results show that there is a relation between religion/culture and coping with a mental illness by the participants of the study. The findings of this study emphasize the necessity of public education efforts that understand and respect people's cultural diversity, as well as teamwork among traditional and medical professionals. Future studies should focus on the use of discourse analysis to better investigate indigenous groups' conceptions of mental illness and their views about its aetiology and treatment. , Thesis (MA) -- Faculty of Health Sciences, School of Behavioural Science, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Sikrweqe, Odwa
- Date: 2023-04
- Subjects: Mental illness , Mental illness--Religious aspects , Mental illness-- Culture aspects
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60445 , vital:65507
- Description: Mental illness has become a global concern, with consequences that may result in a mental health pandemic. Studies conducted on mental illness suggest that religious and cultural beliefs not only affect the expression of mental illness, but also the diagnosis and treatment of mental conditions. South Africa is a country imbued with cultural and religious diversity, which creates different groupings of people, holding diverse beliefs regarding mental illness. In many contexts, supernatural beliefs, traditional healing and indigenous medicines and treatments are considered in the treatment of the symptoms associated with mental illnesses, especially on contexts where there is a reliance on religio-cultural beliefs. Even though there has been a significant increase in the contribution to research focusing on mental health in diverse contexts, much of this research has focused on subjective experiences. Little to no information is available on population-based studies in South Africa regarding mental illness in diverse contexts, thus limiting the generalisation of findings related to cultural and religious influences on mental illness. This dearth of information further limits the development of psychological interventions. The study aimed to explore how mental illness is perceived by the participants and thereafter explored the influence of culture and religion in coping with mental illness by the residents of the Eastern Cape. The study was quantitative in nature and adopted an exploratory-descriptive design. The researcher made use of a questionnaire as a research tool and QuestionPro was utilized as a platform. A convenience sampling technique was utilised. In ensuring rigour of the study, the researcher ensured maximal validity (accurate representation of the data) and reliability (ability to repeat the research procedure). Ethical principles have been adhered to as per the principles on the Belmont Report, to ensure safety of the participants and this includes anonymity, confidentiality and the right to withdraw from participation in the study. Data has been analysed using descriptive and inferential statistics. A sample size of 101 participants from the general population of residents of the Eastern Cape completed the online survey. The results of the study revealed that the residents of the Eastern Cape have substantial knowledge pertaining the cause of mental illness and indicated both positive and negative attitudes towards the mentally ill and possess coping strategies to deal with a mental illness. In addition, the results show that there is a relation between religion/culture and coping with a mental illness by the participants of the study. The findings of this study emphasize the necessity of public education efforts that understand and respect people's cultural diversity, as well as teamwork among traditional and medical professionals. Future studies should focus on the use of discourse analysis to better investigate indigenous groups' conceptions of mental illness and their views about its aetiology and treatment. , Thesis (MA) -- Faculty of Health Sciences, School of Behavioural Science, 2023
- Full Text:
- Date Issued: 2023-04
The importance of learning agility as a component of sustained business success
- Authors: Hennig, Mark Robert
- Date: 2021-04
- Subjects: Success in business -- South Africa , Management -- South Africa , Experiential learning
- Language: English
- Type: Master's/Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/51523 , vital:43295
- Description: The purpose of this treatise is to determine if learning agility is an important component for business success. With the arrival of new technology, change and information explosion the rate of uncertainty is increasing. Leaders are challenged to present continuous change and need to be able to adapt and develop their competencies to remain relevant. The VUCA world increased the complexity of the environment and provide volatility, uncertainty, complexity and are ambiguous. A significant amount of research has been done to define learning agility. The three drivers of learning agility are change, information explosion and rapid response during a crisis. The concept of learning agility can be defined as the readiness and ability to learn from experience and to utilise the learning competency to perform successfully under new environments. The seven-model framework was developed to assess how leaders cope under change. The three leadership competencies are intellectual intelligence, managerial intelligence, and emotional intelligence. Studies shows that emotional intelligence will be an important competency a leader can have and together with learning agility, will provide success to any organisation. The researcher believes that an individual who is not learning agile will not succeed in the new fast-changing environment. The term learning agile is rather a new concept and the influence it has on the organisation is complex. For leaders to succeed, their mindset needs to be adaptable and willing to change. Training and learning from experience will assist the leader to move forward and be an agile leader. A key success factor for organisations is to identify and recruit learning agile individuals to drive competitiveness and enhance relevance in the market. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business Administration, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Hennig, Mark Robert
- Date: 2021-04
- Subjects: Success in business -- South Africa , Management -- South Africa , Experiential learning
- Language: English
- Type: Master's/Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/51523 , vital:43295
- Description: The purpose of this treatise is to determine if learning agility is an important component for business success. With the arrival of new technology, change and information explosion the rate of uncertainty is increasing. Leaders are challenged to present continuous change and need to be able to adapt and develop their competencies to remain relevant. The VUCA world increased the complexity of the environment and provide volatility, uncertainty, complexity and are ambiguous. A significant amount of research has been done to define learning agility. The three drivers of learning agility are change, information explosion and rapid response during a crisis. The concept of learning agility can be defined as the readiness and ability to learn from experience and to utilise the learning competency to perform successfully under new environments. The seven-model framework was developed to assess how leaders cope under change. The three leadership competencies are intellectual intelligence, managerial intelligence, and emotional intelligence. Studies shows that emotional intelligence will be an important competency a leader can have and together with learning agility, will provide success to any organisation. The researcher believes that an individual who is not learning agile will not succeed in the new fast-changing environment. The term learning agile is rather a new concept and the influence it has on the organisation is complex. For leaders to succeed, their mindset needs to be adaptable and willing to change. Training and learning from experience will assist the leader to move forward and be an agile leader. A key success factor for organisations is to identify and recruit learning agile individuals to drive competitiveness and enhance relevance in the market. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business Administration, 2021
- Full Text:
- Date Issued: 2021-04
Improving governance and service delivery in Nelson Mandela Metropolitan Municipality: a quest for a clean audit opinion
- Ntsundwana, Kanyisa Zime Dadewabobonke
- Authors: Ntsundwana, Kanyisa Zime Dadewabobonke
- Date: 2022-12
- Subjects: Service delivery -- Nelson Mandela Metropolitan Municipality -- Port Elizabeth , Municipal finance--Auditing--Law and legislation
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59644 , vital:62297
- Description: The purpose of the study was to investigate how Nelson Mandela Bay Metropolitan Municipality (NMBMM) can improve its governance and service delivery to obtain a clean audit outcome. In addition, the study explored the role of auditing in the functioning and performance of municipalities. NMBMM public officials and political office-bearers are expected in terms of Chapter 7 of the Constitution of South Africa Act 108 of 1996 to promote the general welfare of the community by meeting its needs, expectations and demands. The qualitative (non-empirical) research methodology followed in the study was based on a desktop approach. The annual documents reviewed to answer the research objectives were the Consolidated General Reports on the Local Government Audit Outcome and the Reports of the Auditor-General to the Eastern Cape Provincial Legislature and the council on the NMBMM and its municipal entity for the financial period 2015/2016 to 2019/2020. The problem was that the NMBMM did not obtain a clean audit opinion during this period. The study findings indicated that the main contributing factors that prevented the NMBMM from improving governance, service delivery and obtaining a clean audit outcome were as follows: poor management of accounting practices (financial management); inadequate financial statements and performance reports; a lack of adherence to predetermined objectives and legislation; and unauthorised, fruitless, wasteful and irregular expenditure. To attain a clean audit outcome, NMBMM municipal officials and political officebearers need to perform their mandated duties diligently and overcome the challenges that have barred them from obtaining an unqualified audit opinion. Such an endeavour would be consistent with the Operation Clean Audit (OPCA) campaign, which was introduced by the former Minister of Cooperative Governance and Traditional Affairs, Sicelo Shiceka, in 2009. In other words, the NMBMM must improve its governance and service delivery because a municipality without good governance lacks accountability, which has a direct negative impact on the delivery of services to its communities. Hence, it is recommended inter alia that the NMBMM seeks advice from iii the Auditor-General on strategies to improve its audit outcomes, maintains infrastructure, addresses criminal activities and improves its internal controls. , Thesis (MSc) -- Faculty of Humanities, School of Governmental and Social sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Ntsundwana, Kanyisa Zime Dadewabobonke
- Date: 2022-12
- Subjects: Service delivery -- Nelson Mandela Metropolitan Municipality -- Port Elizabeth , Municipal finance--Auditing--Law and legislation
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59644 , vital:62297
- Description: The purpose of the study was to investigate how Nelson Mandela Bay Metropolitan Municipality (NMBMM) can improve its governance and service delivery to obtain a clean audit outcome. In addition, the study explored the role of auditing in the functioning and performance of municipalities. NMBMM public officials and political office-bearers are expected in terms of Chapter 7 of the Constitution of South Africa Act 108 of 1996 to promote the general welfare of the community by meeting its needs, expectations and demands. The qualitative (non-empirical) research methodology followed in the study was based on a desktop approach. The annual documents reviewed to answer the research objectives were the Consolidated General Reports on the Local Government Audit Outcome and the Reports of the Auditor-General to the Eastern Cape Provincial Legislature and the council on the NMBMM and its municipal entity for the financial period 2015/2016 to 2019/2020. The problem was that the NMBMM did not obtain a clean audit opinion during this period. The study findings indicated that the main contributing factors that prevented the NMBMM from improving governance, service delivery and obtaining a clean audit outcome were as follows: poor management of accounting practices (financial management); inadequate financial statements and performance reports; a lack of adherence to predetermined objectives and legislation; and unauthorised, fruitless, wasteful and irregular expenditure. To attain a clean audit outcome, NMBMM municipal officials and political officebearers need to perform their mandated duties diligently and overcome the challenges that have barred them from obtaining an unqualified audit opinion. Such an endeavour would be consistent with the Operation Clean Audit (OPCA) campaign, which was introduced by the former Minister of Cooperative Governance and Traditional Affairs, Sicelo Shiceka, in 2009. In other words, the NMBMM must improve its governance and service delivery because a municipality without good governance lacks accountability, which has a direct negative impact on the delivery of services to its communities. Hence, it is recommended inter alia that the NMBMM seeks advice from iii the Auditor-General on strategies to improve its audit outcomes, maintains infrastructure, addresses criminal activities and improves its internal controls. , Thesis (MSc) -- Faculty of Humanities, School of Governmental and Social sciences, 2022
- Full Text:
- Date Issued: 2022-12
The effect of Cannabis extract on the morphological and metabolic characteristics of various fat depots in diet-induced Obese and STZ-induced male wistar rats
- Authors: Ramlugon, Sonaal
- Date: 2023-04
- Subjects: Rats as laboratory animals , Diabetes in practice , Cannabis -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/61282 , vital:70044
- Description: To investigate the potential anti-diabetic/obesity properties of oral cannabis administration in an obese and streptozotocin (STZ)-induced diabetic rat model, as well as an obese rat model, and to determine the mechanism of action, with a focus on the peritoneal and intramuscular fat depots. Experimental Design: Obese and STZ-induced diabetic rats were allocated a high fat diet (HFD) and intraperitoneally injected with STZ to mimic an obese and diabetic state. The rats were then orally administered cannabis extract (CE) of 1.25, 2.5 and 5.0 mg/kg body weight (relative to tetrahydrocannabinol (THC) content) or metformin as a positive control. For the obese rat model, the rats were allocated either a high carbohydrate diet (HCD) or high fat diet (HFD) and orally administered with cannabis extract of 1.25 mg/kg body weight (relative to THC content). Weight, blood and insulin-resistant parameters of the rats were monitored. The mitochondrial to genomic DNA ratio (MT:18S DNA), average adipocyte area of the various adipose tissues, citrate synthase and carnitine palmitoyltransferase 1 (CPT1) enzyme activities of the peritoneal and intramuscular fat were measured. Gene expression levels of uncoupling protein 1 (UCP1), cell-death inducing DNA fragmentation factor alpha like effector-a (Cidea), perilipin, hormone-sensitive lipase (HSL) and mitochondrial transcription factor A (TFAM) were measured in peritoneal fat, intramuscular fat and brown adipose tissue (BAT). Main Findings: Obese and STZ-induced diabetic rat model: Due to the biphasic nature of cannabinoids, cannabis dosage plays an important role in the observed effects. CE1.25 was the only cannabis treatment effective in improving the insulinresistant parameters of the rats unlike the other higher cannabis concentrations (CE2.5 and CE5.0). In the peritoneal fat, CE1.25 increased MT:18S DNA, increased citrate synthase activity, and decreased the average adipocyte area when compared to the STZ group. CE1.25 also induced fat beigeing by upregulating gene expression levels of UCP1 and Cidea. XIX Furthermore, an increase in gene expression levels of perilipin, HSL, and TFAM showed increased fat mobilization and metabolic activity. In the intramuscular fat, CE1.25 also reduced the average adipocytes area. However, a different mechanism of action was observed where CE1.25 did not induce fat beigeing, but instead increased both citrate synthase and CPT1 enzyme activities and gene expression levels of HSL, thereby indicating increased fat oxidation and mitochondrial activity. , Thesis (PhD) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Ramlugon, Sonaal
- Date: 2023-04
- Subjects: Rats as laboratory animals , Diabetes in practice , Cannabis -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/61282 , vital:70044
- Description: To investigate the potential anti-diabetic/obesity properties of oral cannabis administration in an obese and streptozotocin (STZ)-induced diabetic rat model, as well as an obese rat model, and to determine the mechanism of action, with a focus on the peritoneal and intramuscular fat depots. Experimental Design: Obese and STZ-induced diabetic rats were allocated a high fat diet (HFD) and intraperitoneally injected with STZ to mimic an obese and diabetic state. The rats were then orally administered cannabis extract (CE) of 1.25, 2.5 and 5.0 mg/kg body weight (relative to tetrahydrocannabinol (THC) content) or metformin as a positive control. For the obese rat model, the rats were allocated either a high carbohydrate diet (HCD) or high fat diet (HFD) and orally administered with cannabis extract of 1.25 mg/kg body weight (relative to THC content). Weight, blood and insulin-resistant parameters of the rats were monitored. The mitochondrial to genomic DNA ratio (MT:18S DNA), average adipocyte area of the various adipose tissues, citrate synthase and carnitine palmitoyltransferase 1 (CPT1) enzyme activities of the peritoneal and intramuscular fat were measured. Gene expression levels of uncoupling protein 1 (UCP1), cell-death inducing DNA fragmentation factor alpha like effector-a (Cidea), perilipin, hormone-sensitive lipase (HSL) and mitochondrial transcription factor A (TFAM) were measured in peritoneal fat, intramuscular fat and brown adipose tissue (BAT). Main Findings: Obese and STZ-induced diabetic rat model: Due to the biphasic nature of cannabinoids, cannabis dosage plays an important role in the observed effects. CE1.25 was the only cannabis treatment effective in improving the insulinresistant parameters of the rats unlike the other higher cannabis concentrations (CE2.5 and CE5.0). In the peritoneal fat, CE1.25 increased MT:18S DNA, increased citrate synthase activity, and decreased the average adipocyte area when compared to the STZ group. CE1.25 also induced fat beigeing by upregulating gene expression levels of UCP1 and Cidea. XIX Furthermore, an increase in gene expression levels of perilipin, HSL, and TFAM showed increased fat mobilization and metabolic activity. In the intramuscular fat, CE1.25 also reduced the average adipocytes area. However, a different mechanism of action was observed where CE1.25 did not induce fat beigeing, but instead increased both citrate synthase and CPT1 enzyme activities and gene expression levels of HSL, thereby indicating increased fat oxidation and mitochondrial activity. , Thesis (PhD) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2023
- Full Text:
- Date Issued: 2023-04
Distinguishing elephant induced thicket degradation and climate related factors in Addo Elephant National Park, Eastern Cape, South Africa
- Authors: Mapheto, Tlhologelo James
- Date: 2023-04
- Subjects: Elephant – Behaviour -- South Africa -- Addo Elephant National Park , Wildlife conservation -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60753 , vital:66741
- Description: The Addo Elephant National Park (AENP) is an ecologically sensitive environment where the increase in elephant population, especially in a changing climate is a recipe for landscape degradation and biodiversity loss. The Park is situated in the drought prone Eastern Cape Province, however, the effects of drought on thicket vegetation is less understood. This study aimed to distinguish elephant-induced thicket degradation from the effects of climatic factors, using remote sensing, GIS, and statistical techniques. To characterise and map vegetation conditions of the reserve temporal series Landsat imagery (n = 22) from 1998 to 2018 were analysed. Vegetation states were determined using Normalised Difference Vegetation Index (NDVI) derived from the growing season of the study period. Using supervised per-pixel image classification technique, the NDVI values characterized into distinct land cover classes viz (1) Intact Thicket, (2) Transformed Thicket, (3) Degraded Thicket, (4) Bare Ground and (6) Water Bodies. Post-classification change detection and landscape fragmentation analysis was performed. Climatic data were obtained from existing weather stations and raster surface of accumulated rainfall and mean maximum temperature were developed using the Inverse Distance Weighting (IDW). Time series analysis was implemented on the NDVI and climatic condition data by plotting annual measures to indicate variable trends. Temporal trend analysis was performed on the NDVI data using the nonparametric Mann-Kendall trend analysis test to indicate thicket vegetation condition improvement and general degradation. The Residual Trend (RESTREND) approach was employed to remove the effect of rainfall on vegetation productivity. This involved using the Ordinary Least Square regression functionality in ArcMap to compute the relationship between ∑NDVI and accumulated rainfall for every pixel for the study period. The products of the regression were assessed using Pearson’s Correlation (r) at a significance level of 90% (p-value ≤ 0.1) to distinguish strong relationships. Overlay analysis was performed, using the NDVI trend slope and the correlation coefficient (r) raster surfaces, to model vegetation dynamics influenced by elephant activities. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Mapheto, Tlhologelo James
- Date: 2023-04
- Subjects: Elephant – Behaviour -- South Africa -- Addo Elephant National Park , Wildlife conservation -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60753 , vital:66741
- Description: The Addo Elephant National Park (AENP) is an ecologically sensitive environment where the increase in elephant population, especially in a changing climate is a recipe for landscape degradation and biodiversity loss. The Park is situated in the drought prone Eastern Cape Province, however, the effects of drought on thicket vegetation is less understood. This study aimed to distinguish elephant-induced thicket degradation from the effects of climatic factors, using remote sensing, GIS, and statistical techniques. To characterise and map vegetation conditions of the reserve temporal series Landsat imagery (n = 22) from 1998 to 2018 were analysed. Vegetation states were determined using Normalised Difference Vegetation Index (NDVI) derived from the growing season of the study period. Using supervised per-pixel image classification technique, the NDVI values characterized into distinct land cover classes viz (1) Intact Thicket, (2) Transformed Thicket, (3) Degraded Thicket, (4) Bare Ground and (6) Water Bodies. Post-classification change detection and landscape fragmentation analysis was performed. Climatic data were obtained from existing weather stations and raster surface of accumulated rainfall and mean maximum temperature were developed using the Inverse Distance Weighting (IDW). Time series analysis was implemented on the NDVI and climatic condition data by plotting annual measures to indicate variable trends. Temporal trend analysis was performed on the NDVI data using the nonparametric Mann-Kendall trend analysis test to indicate thicket vegetation condition improvement and general degradation. The Residual Trend (RESTREND) approach was employed to remove the effect of rainfall on vegetation productivity. This involved using the Ordinary Least Square regression functionality in ArcMap to compute the relationship between ∑NDVI and accumulated rainfall for every pixel for the study period. The products of the regression were assessed using Pearson’s Correlation (r) at a significance level of 90% (p-value ≤ 0.1) to distinguish strong relationships. Overlay analysis was performed, using the NDVI trend slope and the correlation coefficient (r) raster surfaces, to model vegetation dynamics influenced by elephant activities. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2023
- Full Text:
- Date Issued: 2023-04
Factors influencing rentention of academic staff at South African higher education institutions
- Authors: Maphiri, Thabiso
- Date: 2020-04
- Subjects: Grahamstown (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54739 , vital:47653
- Description: The study investigated the factors influencing retention of academic staff at South African Higher Education Institutions (HEIs). The Job Embeddedness theory and Herzberg’s theory on retention were used to explore the retention of employees with special focus on the challenges and strategies of enhancing retention. The study adopted desktop research to explore the retention of academic staff in HEIs. This study discussed the challenges and factors influencing staff retention in universities and Technical and Vocational Education and Training colleges (TVETs) in South Africa. The findings of the study revealed that the challenges that impede staff retention include a lack of capacity; massification of tertiary education; transformation of higher education; redressing historical imbalances; staff turnover; a lack of mentoring and coaching; and the impossibility to satisfy everyone’s needs. The study identified strategies that can be adopted to enhance staff retention that focus on remuneration and compensation; professional development; workplace climate; appointments and promotions; institutional governance; institutional infrastructure and adaptation to change. Factors that contribute to effective staff retention were also identified as organisational culture; the rewards system; mentoring and development programmes; retention tracking, recruitment; selection; the life cycle of an employee; onboarding; performance management systems, career management, bureaucratic organisational structures; and effective support from Deans and Vice-Chancellors. Lastly, the study recommended the following on how HEIs can retain their academic staff: career advancement opportunities to boost morale and loyalty of the staff; mentoring and coaching provided to the junior staff by the senior staff; job satisfaction through the provision of remuneration and rewarding performance; and implementing sound performance management and appraisal systems. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
- Authors: Maphiri, Thabiso
- Date: 2020-04
- Subjects: Grahamstown (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54739 , vital:47653
- Description: The study investigated the factors influencing retention of academic staff at South African Higher Education Institutions (HEIs). The Job Embeddedness theory and Herzberg’s theory on retention were used to explore the retention of employees with special focus on the challenges and strategies of enhancing retention. The study adopted desktop research to explore the retention of academic staff in HEIs. This study discussed the challenges and factors influencing staff retention in universities and Technical and Vocational Education and Training colleges (TVETs) in South Africa. The findings of the study revealed that the challenges that impede staff retention include a lack of capacity; massification of tertiary education; transformation of higher education; redressing historical imbalances; staff turnover; a lack of mentoring and coaching; and the impossibility to satisfy everyone’s needs. The study identified strategies that can be adopted to enhance staff retention that focus on remuneration and compensation; professional development; workplace climate; appointments and promotions; institutional governance; institutional infrastructure and adaptation to change. Factors that contribute to effective staff retention were also identified as organisational culture; the rewards system; mentoring and development programmes; retention tracking, recruitment; selection; the life cycle of an employee; onboarding; performance management systems, career management, bureaucratic organisational structures; and effective support from Deans and Vice-Chancellors. Lastly, the study recommended the following on how HEIs can retain their academic staff: career advancement opportunities to boost morale and loyalty of the staff; mentoring and coaching provided to the junior staff by the senior staff; job satisfaction through the provision of remuneration and rewarding performance; and implementing sound performance management and appraisal systems. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
Encapsulation of flame retardants for lithium-ion battery safety
- Authors: Ntombela, Nompilo Princess
- Date: 2022-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55412 , vital:51993
- Description: Lithium-ion technology takes the lead in electric mobility systems, resulting in an increase in the global demand for Li-ion batteries; however, these batteries are associated with numerous safety concerns. Additionally, there are high costs, high energy and power issues which are some of its key limitations. Research efforts are focused on overcoming these obstacles, with different approaches being explored, such as the investigation of more stable salts, modification of active materials and organic solvents, and the use of electrolyte additives. This study focused specifically on electrolyte additives since the electrolyte is one of the most unstable components of the battery. The electrolyte’s decomposition is one of the reactions that occur inside a battery, which may occur due to overcharging or due to an internal short circuit, amongst others. The electrolyte’s decomposition occurs at the early stages of the thermal runaway process and forms part of the reactions that lead to fires and explosions. Thus, this research aims to develop suitable electrolyte additives to improve the safety aspects of Li-ion batteries. Flame retardant additives show great promise in reducing the flammability of the electrolyte in Li-ion batteries, since they serve to suppress the chemical reactions associated with battery ignition. They retard the fires by scavenging the active radical species formed during the decomposition reaction. In this study, the use of flame retardants was investigated. Flame retardant additives have shown to have flame impeding properties inside a battery; however, their direct addition to the electrolyte tends to cause adverse effects on the ionic conductivity and electrochemical performance of the cells. This study investigated an alternative option - the option to microencapsulate such additives into a neutral compound to ensure that the flame retardant has minimal/no effect on the performance of the battery. This investigation looked at tris(2-butoxyethyl) phosphate (TBP) and bis(2,2,2-trifluoroethyl) methylphosphonate (BFP) as flame retardant additives for the electrolyte. The TBP and BFP flame retardants were microencapsulated in poly(urea formaldehyde) (PUF) coating material via in situ polymerization method. The capsules were characterized using various analytical techniques - to prove it was successfully encapsulated. Electrochemical studies were further done on the capsules and neat flame retardants inside a coin cell. Self-extinguishing time (SET), which is the flammability test, proved that the additives have flame retarding abilities. Opto-digital microscopy (DSX) and scanning electron microscopy (SEM) did confirm the spherical shape of the microcapsules, where SEM also showed the smooth outer layer of the microcapsules and its hollow inner side. Fourier transform infrared spectroscopy (FTIR) proved the presence of the TBP and BFP inside the PUF resin by showing that the chemical composition of microcapsules consisted of both the PUF and flame retardant additives. Simultaneous DSC-TGA (DST) was also performed which showed that the microcapsules were stable before 200 °C, which indicates it would not decompose before the thermal runaway events are occurring. TGA analysis did show that the microcapsules underwent multiple decomposition steps upon heating. Additionally, 31P nuclear magnetic resonance (NMR) was used to quantify the amount of flame retardants additives encapsulated inside PUF shell, and also confirmed the stability of the microcapsules for one month in the electrolyte and at temperatures up to 200 °C. The ionic conductivity was vastly decreased when the flame retardants were added directly to the electrolyte. However, adding the flame retardants in a form of capsules had minimal effect on the ionic conductivity. The cycle capacities of the capsules were also improved when the capsules were added to the cell compared to that of neat flame retardants. The same effect was also noticed when doing Electrochemical Impedance Spectroscopy (EIS). This shows that microencapsulation improves the resistance of the cell caused by the flame retardant in comparison to when added directly to the electrolyte of the cell. , Thesis (MSC) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2022
- Full Text:
- Date Issued: 2022-04
- Authors: Ntombela, Nompilo Princess
- Date: 2022-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55412 , vital:51993
- Description: Lithium-ion technology takes the lead in electric mobility systems, resulting in an increase in the global demand for Li-ion batteries; however, these batteries are associated with numerous safety concerns. Additionally, there are high costs, high energy and power issues which are some of its key limitations. Research efforts are focused on overcoming these obstacles, with different approaches being explored, such as the investigation of more stable salts, modification of active materials and organic solvents, and the use of electrolyte additives. This study focused specifically on electrolyte additives since the electrolyte is one of the most unstable components of the battery. The electrolyte’s decomposition is one of the reactions that occur inside a battery, which may occur due to overcharging or due to an internal short circuit, amongst others. The electrolyte’s decomposition occurs at the early stages of the thermal runaway process and forms part of the reactions that lead to fires and explosions. Thus, this research aims to develop suitable electrolyte additives to improve the safety aspects of Li-ion batteries. Flame retardant additives show great promise in reducing the flammability of the electrolyte in Li-ion batteries, since they serve to suppress the chemical reactions associated with battery ignition. They retard the fires by scavenging the active radical species formed during the decomposition reaction. In this study, the use of flame retardants was investigated. Flame retardant additives have shown to have flame impeding properties inside a battery; however, their direct addition to the electrolyte tends to cause adverse effects on the ionic conductivity and electrochemical performance of the cells. This study investigated an alternative option - the option to microencapsulate such additives into a neutral compound to ensure that the flame retardant has minimal/no effect on the performance of the battery. This investigation looked at tris(2-butoxyethyl) phosphate (TBP) and bis(2,2,2-trifluoroethyl) methylphosphonate (BFP) as flame retardant additives for the electrolyte. The TBP and BFP flame retardants were microencapsulated in poly(urea formaldehyde) (PUF) coating material via in situ polymerization method. The capsules were characterized using various analytical techniques - to prove it was successfully encapsulated. Electrochemical studies were further done on the capsules and neat flame retardants inside a coin cell. Self-extinguishing time (SET), which is the flammability test, proved that the additives have flame retarding abilities. Opto-digital microscopy (DSX) and scanning electron microscopy (SEM) did confirm the spherical shape of the microcapsules, where SEM also showed the smooth outer layer of the microcapsules and its hollow inner side. Fourier transform infrared spectroscopy (FTIR) proved the presence of the TBP and BFP inside the PUF resin by showing that the chemical composition of microcapsules consisted of both the PUF and flame retardant additives. Simultaneous DSC-TGA (DST) was also performed which showed that the microcapsules were stable before 200 °C, which indicates it would not decompose before the thermal runaway events are occurring. TGA analysis did show that the microcapsules underwent multiple decomposition steps upon heating. Additionally, 31P nuclear magnetic resonance (NMR) was used to quantify the amount of flame retardants additives encapsulated inside PUF shell, and also confirmed the stability of the microcapsules for one month in the electrolyte and at temperatures up to 200 °C. The ionic conductivity was vastly decreased when the flame retardants were added directly to the electrolyte. However, adding the flame retardants in a form of capsules had minimal effect on the ionic conductivity. The cycle capacities of the capsules were also improved when the capsules were added to the cell compared to that of neat flame retardants. The same effect was also noticed when doing Electrochemical Impedance Spectroscopy (EIS). This shows that microencapsulation improves the resistance of the cell caused by the flame retardant in comparison to when added directly to the electrolyte of the cell. , Thesis (MSC) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2022
- Full Text:
- Date Issued: 2022-04
Possible futures for South Africa’s transition to a low carbon economy towards 2050
- Authors: Myeki, Pumla Qamisa
- Date: 2021-12
- Subjects: Environmental economics -- South Africa , Carbon dioxide mitigation -- Economic aspects -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54969 , vital:48523
- Description: South Africa together with the rest of the world have been caught up in a new policy wave of developing policies that support the move towards sustainable, low-carbon and climate-resilient economies underpinned by the desire to reduce greenhouse gas (GHG) emissions as per declared Intended Nationally Determined Contributions (INDCs). However, South Africa’s economic development model is still characterised by a coal-based energy structure, which imposes a significant stress on its natural resources and environment, due to vast quantities of GHG emissions into the atmosphere. Currently, in South Africa there is no sign of any coherent plan for achieving the socio-technological change that the transition to a low carbon economy vision implies. The existing policies, strategies and plans are not yet fully aligned with the low carbon transition agenda as they were developed prior to the United Nations Framework Convention on Climate Change (UNFCCC) Paris Agreement call. There has been minimal or no noticeable change in South Africa’s carbon-dependence, which may further lead to market failure effects. The existing policy and regulatory framework for low carbon economy (LCE) transition is perceived complimentary; but is defined by short-term, overarching and vague policies that lack forward thinking far-sighted element of framing the desired future. To tackle the short-termism of South African LCE policy, the study commissioned a mixed-method, futures research approach in order to facilitate a kind of forward thinking required for integrated manoeuvres and long-term vision of different alternating choices with a cognisance of their respective repercussions. The primary research objective of this study was to develop and illustrate possible scenarios for South Africa’s low-carbon economy transition futures over the next 30 years, taking into consideration numerous uncertainties about the future structure of South Africa’s economy, costs of the transition as well as potential technological breakthroughs that could emerge. This objective was achieved with the ultimate description of possible futures - Ses’fikile, Stimela, Inqanawa and Siyaya phambili, and the identification of Ses’fikile as the desired future state; as outlined by the Integrated Vision for South Africa’s transition to an inclusive, competitive, climate-resilient and low carbon economy future. Further, the secondary objectives outlined in Chapter 1 and 2 of this research study were realised through an all-encompassing literature review, political economy and political, economic, social, technological, environmental, legal (PESTEL) analysis, the Real-Time Delphi exercise as well as scenario planning methodology. This research study extracts intuitions from academic, policy planning and futures research in order to discover the prevailing frontiers in the progression of both the theoretical and real-world requirements considered as essential for fundamental economic transformation to a low-carbon future. Extensive contribution of this study included; - Closing the literature gaps that exist in terms of gaining a deeper understanding into insights on the potential drivers, impacts and global trends in the low-carbon economy transition space. Pushing forward a narrative within and between the economic development, policy decision-making and environment about how to visualise and plan for a decarbonized future economy for South Africa. Futures research approach afforded this research study an opportunity to engage with the uncertainties of the low-carbon economy future, while engaging with emerging issues, trends and weak signals that are transforming South Africa’s social horizons. Policy decision-makers were afforded a chance to improve their policy making while addressing the dynamic nature of implications of the current economic development trajectories, alternative future possibilities as well as transitioning to a preferred low-carbon future. In conclusion, contributions made by low-carbon experts who participated in this study provided bigger picture insights for policy decision makers and can provide timely interventions while deliberating about South Africa’s low-carbon future. Finally, conclusions drawn and recommendations made would assist in the stimulation of discussions for further policy research. Key concepts: Low carbon economy, decarbonisation, futures research, climate-resilient, scenario planning, Real-Time Delphi. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Myeki, Pumla Qamisa
- Date: 2021-12
- Subjects: Environmental economics -- South Africa , Carbon dioxide mitigation -- Economic aspects -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54969 , vital:48523
- Description: South Africa together with the rest of the world have been caught up in a new policy wave of developing policies that support the move towards sustainable, low-carbon and climate-resilient economies underpinned by the desire to reduce greenhouse gas (GHG) emissions as per declared Intended Nationally Determined Contributions (INDCs). However, South Africa’s economic development model is still characterised by a coal-based energy structure, which imposes a significant stress on its natural resources and environment, due to vast quantities of GHG emissions into the atmosphere. Currently, in South Africa there is no sign of any coherent plan for achieving the socio-technological change that the transition to a low carbon economy vision implies. The existing policies, strategies and plans are not yet fully aligned with the low carbon transition agenda as they were developed prior to the United Nations Framework Convention on Climate Change (UNFCCC) Paris Agreement call. There has been minimal or no noticeable change in South Africa’s carbon-dependence, which may further lead to market failure effects. The existing policy and regulatory framework for low carbon economy (LCE) transition is perceived complimentary; but is defined by short-term, overarching and vague policies that lack forward thinking far-sighted element of framing the desired future. To tackle the short-termism of South African LCE policy, the study commissioned a mixed-method, futures research approach in order to facilitate a kind of forward thinking required for integrated manoeuvres and long-term vision of different alternating choices with a cognisance of their respective repercussions. The primary research objective of this study was to develop and illustrate possible scenarios for South Africa’s low-carbon economy transition futures over the next 30 years, taking into consideration numerous uncertainties about the future structure of South Africa’s economy, costs of the transition as well as potential technological breakthroughs that could emerge. This objective was achieved with the ultimate description of possible futures - Ses’fikile, Stimela, Inqanawa and Siyaya phambili, and the identification of Ses’fikile as the desired future state; as outlined by the Integrated Vision for South Africa’s transition to an inclusive, competitive, climate-resilient and low carbon economy future. Further, the secondary objectives outlined in Chapter 1 and 2 of this research study were realised through an all-encompassing literature review, political economy and political, economic, social, technological, environmental, legal (PESTEL) analysis, the Real-Time Delphi exercise as well as scenario planning methodology. This research study extracts intuitions from academic, policy planning and futures research in order to discover the prevailing frontiers in the progression of both the theoretical and real-world requirements considered as essential for fundamental economic transformation to a low-carbon future. Extensive contribution of this study included; - Closing the literature gaps that exist in terms of gaining a deeper understanding into insights on the potential drivers, impacts and global trends in the low-carbon economy transition space. Pushing forward a narrative within and between the economic development, policy decision-making and environment about how to visualise and plan for a decarbonized future economy for South Africa. Futures research approach afforded this research study an opportunity to engage with the uncertainties of the low-carbon economy future, while engaging with emerging issues, trends and weak signals that are transforming South Africa’s social horizons. Policy decision-makers were afforded a chance to improve their policy making while addressing the dynamic nature of implications of the current economic development trajectories, alternative future possibilities as well as transitioning to a preferred low-carbon future. In conclusion, contributions made by low-carbon experts who participated in this study provided bigger picture insights for policy decision makers and can provide timely interventions while deliberating about South Africa’s low-carbon future. Finally, conclusions drawn and recommendations made would assist in the stimulation of discussions for further policy research. Key concepts: Low carbon economy, decarbonisation, futures research, climate-resilient, scenario planning, Real-Time Delphi. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12