Cultural perspectives on health decision making of HIV positive Xhosa males
- Tebekana, Aviwe Zuziwe Nomalibongwe
- Authors: Tebekana, Aviwe Zuziwe Nomalibongwe
- Date: 2020-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53769 , vital:45835
- Description: In 1998, following a recommendation made by the United Nations Educational, Scientific and Cultural Organisation (UNESO), the Joint United Nations programme on HIV and AIDS (UNAIDS) adopted a cultural approach to HIV and AIDS prevention and treatment for sustainable development. Cultural identity, values and norms are all influential factors in health decision making and may be especially important in the context of HIV infection. The research aim of this study was to explore and describe the experiences of HIV positive Xhosa males in relation to understanding how cultural identity, cultural values and norms influence the health decision making behaviour of Xhosa males. A qualitative study design was adopted. A descriptive and interpretative approach was applied. Semi-structured interviews were conducted with 10 HIV positive Xhosa males aged 25 to 49 years in four primary healthcare clinics in the Nelson Mandela Bay. Thematic data analysis was utilised to analyse the data through the lens of literature and the bio-ecological model. The data was coded by the researcher and an independent coder. Three themes and six sub themes emerged from the study. Theme one is: significance of culture for HIV positive Xhosa males. Theme two is: perspectives on factors that have an influence on health decision making. Theme three is: perceived beliefs and perceptions about HIV and AIDS in the Xhosa ethnic group. The study indicated that cultural factors such as ancestral beliefs regarding illness, traditional circumcision, initiation school and masculine roles and expectations influenced health decision making of the Xhosa males. In addition, there are other factors that have an influence on health decision making such as psycho-social factors of peer pressure and biological factors which include physical developmental changes. In addition to factors that have an influence to health decision making, it became apparent in the study that there was perceived stigma attached to HIV and AIDS from family members and the Xhosa community. Participants also experienced internalised stigma and expressed a v fear of not having an heir; thus, influencing risk taking health decision in fear of being stigmatised. Perceptions of HIV positive Xhosa males on cultural factors that have an influence on health decision making such as risk behaviour and adherence to treatment are: ancestral belief of protection against illness, traditional circumcision, initiation school and masculine roles and expectations. , Thesis (MA) -- Faculty of Health Sciences, School of Behavioural Sciences, 2020
- Full Text:
- Date Issued: 2020-12
- Authors: Tebekana, Aviwe Zuziwe Nomalibongwe
- Date: 2020-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53769 , vital:45835
- Description: In 1998, following a recommendation made by the United Nations Educational, Scientific and Cultural Organisation (UNESO), the Joint United Nations programme on HIV and AIDS (UNAIDS) adopted a cultural approach to HIV and AIDS prevention and treatment for sustainable development. Cultural identity, values and norms are all influential factors in health decision making and may be especially important in the context of HIV infection. The research aim of this study was to explore and describe the experiences of HIV positive Xhosa males in relation to understanding how cultural identity, cultural values and norms influence the health decision making behaviour of Xhosa males. A qualitative study design was adopted. A descriptive and interpretative approach was applied. Semi-structured interviews were conducted with 10 HIV positive Xhosa males aged 25 to 49 years in four primary healthcare clinics in the Nelson Mandela Bay. Thematic data analysis was utilised to analyse the data through the lens of literature and the bio-ecological model. The data was coded by the researcher and an independent coder. Three themes and six sub themes emerged from the study. Theme one is: significance of culture for HIV positive Xhosa males. Theme two is: perspectives on factors that have an influence on health decision making. Theme three is: perceived beliefs and perceptions about HIV and AIDS in the Xhosa ethnic group. The study indicated that cultural factors such as ancestral beliefs regarding illness, traditional circumcision, initiation school and masculine roles and expectations influenced health decision making of the Xhosa males. In addition, there are other factors that have an influence on health decision making such as psycho-social factors of peer pressure and biological factors which include physical developmental changes. In addition to factors that have an influence to health decision making, it became apparent in the study that there was perceived stigma attached to HIV and AIDS from family members and the Xhosa community. Participants also experienced internalised stigma and expressed a v fear of not having an heir; thus, influencing risk taking health decision in fear of being stigmatised. Perceptions of HIV positive Xhosa males on cultural factors that have an influence on health decision making such as risk behaviour and adherence to treatment are: ancestral belief of protection against illness, traditional circumcision, initiation school and masculine roles and expectations. , Thesis (MA) -- Faculty of Health Sciences, School of Behavioural Sciences, 2020
- Full Text:
- Date Issued: 2020-12
The relationship between exports and economic growth: an empirical case study of the South African automobile industry
- Authors: Taylor, Nina-Mari
- Date: 2012-03
- Subjects: Exports , Automobile industry and trade
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26313 , vital:65237
- Description: The dissertation investigates the relationship between automobile exports and economic growth in South Africa. Given the amount of investment and government assistance that has gone into assisting and developing the South African automobile industry via the Motor Industry Development Programme, this study examines whether the increase in automobile exports has impacted on economic growth. A demand-side model of the Export-Led Growth hypothesis is estimated in order to analyse the magnitude of the impact of automobile exports on growth. The results of the VECM and Dynamic Granger Causality test reveal that vehicle exports have a long-run positive impact on economic growth and that a uni-directional causal relationship is found to run from vehicle exports to economic growth. Even though vehicle exports are found to have a relatively significant impact on economic growth, domestic demand factors are concluded as being the key contributor of economic growth in South Africa. , Thesis (MA) -- Faculty of Management and Commerce, 2012
- Full Text:
- Date Issued: 2012-03
- Authors: Taylor, Nina-Mari
- Date: 2012-03
- Subjects: Exports , Automobile industry and trade
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26313 , vital:65237
- Description: The dissertation investigates the relationship between automobile exports and economic growth in South Africa. Given the amount of investment and government assistance that has gone into assisting and developing the South African automobile industry via the Motor Industry Development Programme, this study examines whether the increase in automobile exports has impacted on economic growth. A demand-side model of the Export-Led Growth hypothesis is estimated in order to analyse the magnitude of the impact of automobile exports on growth. The results of the VECM and Dynamic Granger Causality test reveal that vehicle exports have a long-run positive impact on economic growth and that a uni-directional causal relationship is found to run from vehicle exports to economic growth. Even though vehicle exports are found to have a relatively significant impact on economic growth, domestic demand factors are concluded as being the key contributor of economic growth in South Africa. , Thesis (MA) -- Faculty of Management and Commerce, 2012
- Full Text:
- Date Issued: 2012-03
Combined Additive Manufacturing and Machining for Large-Scale Prototyping for Minimising Material Wastage
- Authors: Taylor, Kyle Joshua
- Date: 2022-04
- Subjects: Prototypes, Engineering
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58484 , vital:59645
- Description: This research project aimed to develop a combined additive and subtractive manufacturing platform capable of rapidly producing large-scale prototypes for minimising material wastage. A design conceptualisation process led to the design and development of a system to deposit the additive material. The developed system was mounted to a large-scale CNC milling machine. This combination of additive and subtractive manufacturing into a single system integrated the separate benefits of the two independent technologies. Mastercam was selected as the preferred CAD/CAM software package to generate toolpaths for the additive and subtractive processes. The Beckhoff HMI provided a user-friendly interface to interpret the generated G-code files, set the Work Coordinate System, and control user-defined parameters such as the feed rate. An in-depth statistical analysis of the developed platform's dimensional accuracy, repeatability, stability, and material wastage was performed. In addition, the effects of the independent adjustment of the subtractive manufacturing process parameters such as the spindle speed, feed rate, depth of cut and stepover distance were considered. Finally, a cycle time comparison was performed in producing a working prototype between the developed HM system and a commercially available 3D printer. This research provided a platform for further investigation into the ever-expanding applications and benefits of rapid prototyping. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-04
- Authors: Taylor, Kyle Joshua
- Date: 2022-04
- Subjects: Prototypes, Engineering
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58484 , vital:59645
- Description: This research project aimed to develop a combined additive and subtractive manufacturing platform capable of rapidly producing large-scale prototypes for minimising material wastage. A design conceptualisation process led to the design and development of a system to deposit the additive material. The developed system was mounted to a large-scale CNC milling machine. This combination of additive and subtractive manufacturing into a single system integrated the separate benefits of the two independent technologies. Mastercam was selected as the preferred CAD/CAM software package to generate toolpaths for the additive and subtractive processes. The Beckhoff HMI provided a user-friendly interface to interpret the generated G-code files, set the Work Coordinate System, and control user-defined parameters such as the feed rate. An in-depth statistical analysis of the developed platform's dimensional accuracy, repeatability, stability, and material wastage was performed. In addition, the effects of the independent adjustment of the subtractive manufacturing process parameters such as the spindle speed, feed rate, depth of cut and stepover distance were considered. Finally, a cycle time comparison was performed in producing a working prototype between the developed HM system and a commercially available 3D printer. This research provided a platform for further investigation into the ever-expanding applications and benefits of rapid prototyping. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-04
Characterization of Fluorescently-Labelled Plasmodium Lactate Dehydrogenase-Binding Aptamers for the Detection and Speciation of Malarial Infections
- Authors: Taylor, Bianca Rose
- Date: 2021-10-29
- Subjects: Uncatalogued
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/192572 , vital:45238
- Description: Thesis (MSc) -- Faculty of Science, Biotechnology Innovation Centre, 2021
- Full Text:
- Date Issued: 2021-10-29
- Authors: Taylor, Bianca Rose
- Date: 2021-10-29
- Subjects: Uncatalogued
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/192572 , vital:45238
- Description: Thesis (MSc) -- Faculty of Science, Biotechnology Innovation Centre, 2021
- Full Text:
- Date Issued: 2021-10-29
Analysing equity and ethical dimensions of water governance challenges in the lower section of the upper Vaal River catchment, Gauteng, South Africa
- Authors: Tavengwa, Noleen Shamiso
- Date: 2023-10-13
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/424199 , vital:72132
- Description: Poor water governance practices have been identified as one of the root causes of water problems confronting the South African water sector. This is evident in the lower section of the Upper Vaal River Catchment, where ineffective implementation of the regulatory measures has resulted in multiple incidents of illegal discharge of effluent from municipal wastewater treatment works, industrial and mining activities. Pollution and deterioration of water quality is a major challenge in the catchment; the Vaal River is severely polluted beyond acceptable standards and impacts negatively on other water users who have legitimate rights to the water resources. Pollution not only affects human activities and use, but also has negative impacts on ecological health and functionality. Poor water governance practices raise ethical implications for the rights to water for both social and ecological components. Although many water governance challenges in South Africa have implications that border on values and ethics, the relationship between these concepts has hardly been explored. In order to contribute towards filling this gap, this study explores water governance challenges and their ethical implications, and then analyse the equity dimensions of key water challenges among institutional actors in the lower section of the Upper Vaal WMA, Gauteng. The study uses a qualitative research approach which involves several methods of data collection: document analysis, workshops, focus group discussions, key informant interviews and participant observation. The data collected were analysed using thematic analysis, and then applied an ethical framework to distil ethical implications of the identified water governance challenges. There are five water governance challenges that were identified, which are i) failure in the implementation of water legislation and regulations, ii) ineffective leadership and management, iii) cooperative governance and poor accountability, iv) decentralisation and ineffective participation, and v) finance, infrastructure, and technical capacity. The deterioration of water quality and pollution due to ineffective implementation of the regulatory system has ethical implications towards protection of the ecological system and sustainable management of the water resources for the present and future generation. Ineffective implementation of the regulatory measure also raises the issue of distributive equity between different water users and between current and future users. These implications are critical particularly when viewed from the perspective of systemic-relational ethical approach which posit that in social-ecological systems, all components ought to be treated with equal regards, and their inherent worth respected in order to maintain the unity of the SES. The idea of equal regards to the inherent worth of the component implies due respect, in ways that do not undermine the integrity of the entire system. The challenges identified in the system suggest that i) the right of the ecological system to water is undermined due to anthropogenic activities, which may in the long term undermine the functionality of the entire SES; ii) the right of the margined to access to water of the right quality is also undermined, and pollution costs is externalised. These are matters of ethics that thus deserved attention in policy and management considerations. The study analysed equity dimensions (distributive and procedural), targeting the key institutional water users (i.e., mines, industries, agriculture, municipalities, and the wastewater treatment works) in the lower section of the Upper Vaal River Catchment as equity candidates due to their activities that significantly impact the environment and the water resources. The cost of pollution caused by mining activities, industrial activities and the wastewater treatment works is externalised to other users who are not responsible for the pollution. In this regard study identified key drivers that raise concerns linked to distributive equity, which are ) pollution and water quality deterioration, ii) the legacies of mining activities, and iii) poor infrastructure maintenance, vandalism, and theft. Identifying these key drivers of distributive equity concerns is critical in ensuring that the water governance processes are designed in a way that stakeholders and actors reliant on water resources within the catchment have equitable and fair access without the effects of externalised costs from other actors. The identified water governance challenges in the catchment all borders on ethics, thus an ethical framework is crucial in tackling water related problems. The principles of ethics can be used as guidelines to decision-making process for the management and governance of water resources in South Africa. Therefore, implementing and incorporating principles of the systemic-relational ethics into policy making and water resources management will yield sustainable, efficient, and equitable use and management of water resources. , Thesis (MSc) -- Faculty of Science, Institute for Water Research, 2023
- Full Text:
- Date Issued: 2023-10-13
- Authors: Tavengwa, Noleen Shamiso
- Date: 2023-10-13
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/424199 , vital:72132
- Description: Poor water governance practices have been identified as one of the root causes of water problems confronting the South African water sector. This is evident in the lower section of the Upper Vaal River Catchment, where ineffective implementation of the regulatory measures has resulted in multiple incidents of illegal discharge of effluent from municipal wastewater treatment works, industrial and mining activities. Pollution and deterioration of water quality is a major challenge in the catchment; the Vaal River is severely polluted beyond acceptable standards and impacts negatively on other water users who have legitimate rights to the water resources. Pollution not only affects human activities and use, but also has negative impacts on ecological health and functionality. Poor water governance practices raise ethical implications for the rights to water for both social and ecological components. Although many water governance challenges in South Africa have implications that border on values and ethics, the relationship between these concepts has hardly been explored. In order to contribute towards filling this gap, this study explores water governance challenges and their ethical implications, and then analyse the equity dimensions of key water challenges among institutional actors in the lower section of the Upper Vaal WMA, Gauteng. The study uses a qualitative research approach which involves several methods of data collection: document analysis, workshops, focus group discussions, key informant interviews and participant observation. The data collected were analysed using thematic analysis, and then applied an ethical framework to distil ethical implications of the identified water governance challenges. There are five water governance challenges that were identified, which are i) failure in the implementation of water legislation and regulations, ii) ineffective leadership and management, iii) cooperative governance and poor accountability, iv) decentralisation and ineffective participation, and v) finance, infrastructure, and technical capacity. The deterioration of water quality and pollution due to ineffective implementation of the regulatory system has ethical implications towards protection of the ecological system and sustainable management of the water resources for the present and future generation. Ineffective implementation of the regulatory measure also raises the issue of distributive equity between different water users and between current and future users. These implications are critical particularly when viewed from the perspective of systemic-relational ethical approach which posit that in social-ecological systems, all components ought to be treated with equal regards, and their inherent worth respected in order to maintain the unity of the SES. The idea of equal regards to the inherent worth of the component implies due respect, in ways that do not undermine the integrity of the entire system. The challenges identified in the system suggest that i) the right of the ecological system to water is undermined due to anthropogenic activities, which may in the long term undermine the functionality of the entire SES; ii) the right of the margined to access to water of the right quality is also undermined, and pollution costs is externalised. These are matters of ethics that thus deserved attention in policy and management considerations. The study analysed equity dimensions (distributive and procedural), targeting the key institutional water users (i.e., mines, industries, agriculture, municipalities, and the wastewater treatment works) in the lower section of the Upper Vaal River Catchment as equity candidates due to their activities that significantly impact the environment and the water resources. The cost of pollution caused by mining activities, industrial activities and the wastewater treatment works is externalised to other users who are not responsible for the pollution. In this regard study identified key drivers that raise concerns linked to distributive equity, which are ) pollution and water quality deterioration, ii) the legacies of mining activities, and iii) poor infrastructure maintenance, vandalism, and theft. Identifying these key drivers of distributive equity concerns is critical in ensuring that the water governance processes are designed in a way that stakeholders and actors reliant on water resources within the catchment have equitable and fair access without the effects of externalised costs from other actors. The identified water governance challenges in the catchment all borders on ethics, thus an ethical framework is crucial in tackling water related problems. The principles of ethics can be used as guidelines to decision-making process for the management and governance of water resources in South Africa. Therefore, implementing and incorporating principles of the systemic-relational ethics into policy making and water resources management will yield sustainable, efficient, and equitable use and management of water resources. , Thesis (MSc) -- Faculty of Science, Institute for Water Research, 2023
- Full Text:
- Date Issued: 2023-10-13
African feminism(s) as it informs the experiences of African women leaders at universities in South Africa
- Authors: Tau, Siphokazi
- Date: 2022-04
- Subjects: Feminisms--Africa , Leadership in women , Higher education -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59991 , vital:62731
- Description: The South African higher education geography is one that is met with contesting ideas. The establishment of the university in Africa was a project to mimic the exclusionary nature of the western university. Of centering a particular knowledge and way of being, leaving African women and other marginalised groups outside of the culture of the space and away from the possibility of being knowledge producers. The end of Apartheid, signaled an opportunity for new policies that address racial, gendered and various other lines of oppression and marginalisation. Universities, Technical and Vocational Education and Training (TVET) colleges with different histories were merged to make way for the new South Africa. Access to institutions of higher education opened up across geographies, making way for a multicultural student and staff demographic. This transformation has also led to the transformation of the leadership structures of such spaces, with currently only five institutions being led by female and women, out of twenty-six in the country. The aim of this study is to understand the experiences of African women who are leaders in universities, focusing on how they negotiate a history of being excluded in the space with the present context of being able to influence the future of higher education. Using an African feminist lens, I draw on five individual interviews and secondary data from previous studies to excavate phenomenological experiences. The findings reveal that feminist traits of equality of social justice are integral in how the participants perform their leadership. The findings also show experiences of belonging in the culture of the university cause a great deal of tension of which the leaders are constantly working to change, to establish different cultures of being and existing in the South African university. , Thesis (MA) -- Faculty of Humanities, School of governmental science and social sciences, 2022
- Full Text:
- Date Issued: 2022-04
- Authors: Tau, Siphokazi
- Date: 2022-04
- Subjects: Feminisms--Africa , Leadership in women , Higher education -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59991 , vital:62731
- Description: The South African higher education geography is one that is met with contesting ideas. The establishment of the university in Africa was a project to mimic the exclusionary nature of the western university. Of centering a particular knowledge and way of being, leaving African women and other marginalised groups outside of the culture of the space and away from the possibility of being knowledge producers. The end of Apartheid, signaled an opportunity for new policies that address racial, gendered and various other lines of oppression and marginalisation. Universities, Technical and Vocational Education and Training (TVET) colleges with different histories were merged to make way for the new South Africa. Access to institutions of higher education opened up across geographies, making way for a multicultural student and staff demographic. This transformation has also led to the transformation of the leadership structures of such spaces, with currently only five institutions being led by female and women, out of twenty-six in the country. The aim of this study is to understand the experiences of African women who are leaders in universities, focusing on how they negotiate a history of being excluded in the space with the present context of being able to influence the future of higher education. Using an African feminist lens, I draw on five individual interviews and secondary data from previous studies to excavate phenomenological experiences. The findings reveal that feminist traits of equality of social justice are integral in how the participants perform their leadership. The findings also show experiences of belonging in the culture of the university cause a great deal of tension of which the leaders are constantly working to change, to establish different cultures of being and existing in the South African university. , Thesis (MA) -- Faculty of Humanities, School of governmental science and social sciences, 2022
- Full Text:
- Date Issued: 2022-04
Factors constraining and enabling the adoption of a disruptive technology by African small, micro, and medium enterprises for the Fourth Industrial Revolution: The case of mobile money
- Authors: Tarr, Dillon
- Date: 2022-10-14
- Subjects: Disruptive technologies , Mobile commerce , Industry 4.0 , Small business Africa, Sub-Saharan , Diffusion of innovations Africa, Sub-Saharan , Technological innovations Management
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/357709 , vital:64770
- Description: The Fourth Industrial Revolution (4IR) is set to disrupt existing economic and social structures through the use of cyber-physical systems that result from a fusion of the digital, biological, and physical spheres. The fifth and current long wave of innovation is going through such a digital revolution in the ongoing deployment period which is being driven by the generalpurpose technologies of Artificial Intelligence and the Internet of Things, among other cyberphysical systems. The impact of mobile money in the access of financial services has shown how disruptive incremental innovations in mobile and digital technologies can be. The transformational power of mobile money in financial access is due to its use as an accessible financial tool that utilizes mobile devices to send and/or receive money over great distances. With the 4IR looming, this thesis determines the factors that enable and constrain the adoption of a disruptive technology amongst Sub-Saharan African small, micro, and medium enterprises (SMMEs). Therefore, due to its impact on financial inclusion and the formalization of SMMEs, mobile money is used as an indicator for the adoption of 4IR disruptive digital technologies. The adoption of mobile money was evaluated using secondary data from a survey conducted by Research ICT Africa, which surveyed 4408 SMMEs in nine African countries. The Diffusion of Innovations (DOI) model and the Unified Theory of Acceptance and Use of Technology (UTAUT) model were used to identify the factors enabling and constraining the adoption of a disruptive technology, in this case mobile money. Factors included gender, vocational training, business skills training, tertiary education, services, performance expectancy, social media, location, and nine African countries (Kenya, Mozambique, Ghana, Nigeria, Rwanda, South Africa, Tanzania, Uganda, and Senegal). The factors were grouped into owner characteristics, firm attributes and country attributes. SMME owners with business skills (49%) showed the highest level of adoption in terms of owner characteristics, Kenyan SMMEs (21%) had the highest adoption between the countries surveyed, and social media (62%) showed the highest adoption in terms of firm attributes followed by the formal variable (47%). In general, only 29% of SMMEs surveyed adopted mobile money. The study found that women SMME owners were more likely to be affected by business formality when adopting a disruptive technology compared to male owned SMMEs. This is because informality often exacerbates other barriers/challenges women face such as lower access to finance, lower ability to exercise property, business, and labour rights, and lower visibility. The results also demonstrate that vocational training is more important than general tertiary education for the ii adoption of a disruptive technology such as mobile money. Furthermore, when using social media as a tool for business advice SMME owners were more likely to adopt the disruptive technology. The study suggests that to encourage African SMMEs to adequately adopt disruptive technologies of the 4IR, more women owned SMMEs need to enter the formal economy, and vocational training targeted at business skills must be promoted amongst all SMME owners. Eastern African SMMEs were found to be more likely to adopt mobile money compared to other African regions. The finding demonstrates the need for more African countries (particularly outside of the Eastern African region) to encourage innovation by addressing the four enablers of mobile connectivity (i.e. infrastructure, affordability, consumer readiness, and mobile services) which will in effect lead to economic growth and development. The study shows that to address country/regional differences, in addition to building the required infrastructure in terms of mobile internet connectivity, countries should increase the local relevancy of disruptive technologies between SMMEs. To achieve this the study suggests increasing mobile social media penetration rates. This is because when social media is used as a tool for business advice SMME owners are more likely to adopt a disruptive technology (as is the case with mobile money) due to the social influence of social media. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Tarr, Dillon
- Date: 2022-10-14
- Subjects: Disruptive technologies , Mobile commerce , Industry 4.0 , Small business Africa, Sub-Saharan , Diffusion of innovations Africa, Sub-Saharan , Technological innovations Management
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/357709 , vital:64770
- Description: The Fourth Industrial Revolution (4IR) is set to disrupt existing economic and social structures through the use of cyber-physical systems that result from a fusion of the digital, biological, and physical spheres. The fifth and current long wave of innovation is going through such a digital revolution in the ongoing deployment period which is being driven by the generalpurpose technologies of Artificial Intelligence and the Internet of Things, among other cyberphysical systems. The impact of mobile money in the access of financial services has shown how disruptive incremental innovations in mobile and digital technologies can be. The transformational power of mobile money in financial access is due to its use as an accessible financial tool that utilizes mobile devices to send and/or receive money over great distances. With the 4IR looming, this thesis determines the factors that enable and constrain the adoption of a disruptive technology amongst Sub-Saharan African small, micro, and medium enterprises (SMMEs). Therefore, due to its impact on financial inclusion and the formalization of SMMEs, mobile money is used as an indicator for the adoption of 4IR disruptive digital technologies. The adoption of mobile money was evaluated using secondary data from a survey conducted by Research ICT Africa, which surveyed 4408 SMMEs in nine African countries. The Diffusion of Innovations (DOI) model and the Unified Theory of Acceptance and Use of Technology (UTAUT) model were used to identify the factors enabling and constraining the adoption of a disruptive technology, in this case mobile money. Factors included gender, vocational training, business skills training, tertiary education, services, performance expectancy, social media, location, and nine African countries (Kenya, Mozambique, Ghana, Nigeria, Rwanda, South Africa, Tanzania, Uganda, and Senegal). The factors were grouped into owner characteristics, firm attributes and country attributes. SMME owners with business skills (49%) showed the highest level of adoption in terms of owner characteristics, Kenyan SMMEs (21%) had the highest adoption between the countries surveyed, and social media (62%) showed the highest adoption in terms of firm attributes followed by the formal variable (47%). In general, only 29% of SMMEs surveyed adopted mobile money. The study found that women SMME owners were more likely to be affected by business formality when adopting a disruptive technology compared to male owned SMMEs. This is because informality often exacerbates other barriers/challenges women face such as lower access to finance, lower ability to exercise property, business, and labour rights, and lower visibility. The results also demonstrate that vocational training is more important than general tertiary education for the ii adoption of a disruptive technology such as mobile money. Furthermore, when using social media as a tool for business advice SMME owners were more likely to adopt the disruptive technology. The study suggests that to encourage African SMMEs to adequately adopt disruptive technologies of the 4IR, more women owned SMMEs need to enter the formal economy, and vocational training targeted at business skills must be promoted amongst all SMME owners. Eastern African SMMEs were found to be more likely to adopt mobile money compared to other African regions. The finding demonstrates the need for more African countries (particularly outside of the Eastern African region) to encourage innovation by addressing the four enablers of mobile connectivity (i.e. infrastructure, affordability, consumer readiness, and mobile services) which will in effect lead to economic growth and development. The study shows that to address country/regional differences, in addition to building the required infrastructure in terms of mobile internet connectivity, countries should increase the local relevancy of disruptive technologies between SMMEs. To achieve this the study suggests increasing mobile social media penetration rates. This is because when social media is used as a tool for business advice SMME owners are more likely to adopt a disruptive technology (as is the case with mobile money) due to the social influence of social media. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-10-14
The synthesis of anastrazole intermediates using continuous flow systems
- Authors: Tanyi, Sam Tambi
- 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/10948/54116 , vital:46304
- Description: In this study, the continuous flow synthesis of anastrozole intermediates were investigated using mesitylene as starting material. Anastrozole is an important drug used for the treatment of breast cancer. In the first step, mesitylene was brominated using N-bromosuccinimide to obtain 3,5-bis(bromomethyl)toluene. Selectivity became an issue due to the formation of two by-products; namely 1,3,5-tris(bromomethyl) benzene (the tribrominated by-product) and 1-(bromomethyl)-3,5-dimethylbenzene (the monobrominated by-product). Since the reaction parameters can be more precisely controlled in flow chemistry systems, we were able to optimize the formation the desired product 3,5-bis(bromomethyl)toluene. The reaction was initially optimized ina 15μLChemtrix glass micro reactor resulting in 100%conversion with 95%selectivity towards the desired product 3,5-bis(bromomethyl)toluenein 15 seconds, with a throughput of 0.006 g/h. The reaction was then scaled up in a 1.7 mLLTF reactor, equally yielding 100%conversion with 95%selectivityin 4minutes, with a throughput of2.01g/h. The bromination of mesitylene was also attempted in a homemade photochemical reactor consisting of a 3.02 polytetrafluoroethylene coil reactor and BLE-6T365 UV lamp. In this photochemical reactor, although 100%conversionwas again obtained only75%selectivity was achieved in 20minutes, with a throughput of 0.025g/h. This drop in selectivity was attributed to poorer mixing in the larger polytetrafluoroethylene coil reactor and possibly insufficient light penetration. The next step, involving the cyanation of 3,5-bis(bromomethyl)toluene to obtain 2,2'-(5-methyl-1,3-phenylene) diacetonitrilegave 100%conversion in 1 minute at 190 °C in a 1.7 mLLTFreactor, with a throughput of 5.2g/h. The subsequent methylation of 3,5-bis(cyanomethyl)toluene to obtain3,5-bis(1-cyano-1-methylethyl) toluene was investigated using a1mLpolytetrafluoroethylenecoil reactor, ultimatelyachieving99%conversionat40 °Cin 8minutes, with a throughput of 0.045g/h. Next, the bromination of3,5-bis(1-cyano-1-methylethyl)toluene using N-bromosuccinimideto yield 2,2'-(5-bromomethyl-1,3-phenylene)di(2-methyl propionitrile) gave 100%conversion at 120 °C in 4 minutes, with a throughput of 0.35g/h. Lastly, the multistep synthesis of 3,5-bis(cyanomethyl)toluene was done in two integrated 1.7 mLLTF reactors, using the predetermined optimum conditions to achieve 94%conversion towards 3,5-bis(cyanomethyl)toluene with a total r , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Tanyi, Sam Tambi
- 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/10948/54116 , vital:46304
- Description: In this study, the continuous flow synthesis of anastrozole intermediates were investigated using mesitylene as starting material. Anastrozole is an important drug used for the treatment of breast cancer. In the first step, mesitylene was brominated using N-bromosuccinimide to obtain 3,5-bis(bromomethyl)toluene. Selectivity became an issue due to the formation of two by-products; namely 1,3,5-tris(bromomethyl) benzene (the tribrominated by-product) and 1-(bromomethyl)-3,5-dimethylbenzene (the monobrominated by-product). Since the reaction parameters can be more precisely controlled in flow chemistry systems, we were able to optimize the formation the desired product 3,5-bis(bromomethyl)toluene. The reaction was initially optimized ina 15μLChemtrix glass micro reactor resulting in 100%conversion with 95%selectivity towards the desired product 3,5-bis(bromomethyl)toluenein 15 seconds, with a throughput of 0.006 g/h. The reaction was then scaled up in a 1.7 mLLTF reactor, equally yielding 100%conversion with 95%selectivityin 4minutes, with a throughput of2.01g/h. The bromination of mesitylene was also attempted in a homemade photochemical reactor consisting of a 3.02 polytetrafluoroethylene coil reactor and BLE-6T365 UV lamp. In this photochemical reactor, although 100%conversionwas again obtained only75%selectivity was achieved in 20minutes, with a throughput of 0.025g/h. This drop in selectivity was attributed to poorer mixing in the larger polytetrafluoroethylene coil reactor and possibly insufficient light penetration. The next step, involving the cyanation of 3,5-bis(bromomethyl)toluene to obtain 2,2'-(5-methyl-1,3-phenylene) diacetonitrilegave 100%conversion in 1 minute at 190 °C in a 1.7 mLLTFreactor, with a throughput of 5.2g/h. The subsequent methylation of 3,5-bis(cyanomethyl)toluene to obtain3,5-bis(1-cyano-1-methylethyl) toluene was investigated using a1mLpolytetrafluoroethylenecoil reactor, ultimatelyachieving99%conversionat40 °Cin 8minutes, with a throughput of 0.045g/h. Next, the bromination of3,5-bis(1-cyano-1-methylethyl)toluene using N-bromosuccinimideto yield 2,2'-(5-bromomethyl-1,3-phenylene)di(2-methyl propionitrile) gave 100%conversion at 120 °C in 4 minutes, with a throughput of 0.35g/h. Lastly, the multistep synthesis of 3,5-bis(cyanomethyl)toluene was done in two integrated 1.7 mLLTF reactors, using the predetermined optimum conditions to achieve 94%conversion towards 3,5-bis(cyanomethyl)toluene with a total r , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Stakeholder engagement in social enterprise: designing a sustainable business model for the ‘Food for Us’ mobile application
- Authors: Tantsi, Idah Thato
- Date: 2022-10
- Subjects: Business planning South Africa , Sustainability South Africa , Mobile apps South Africa , Social responsibility of business South Africa , Social entrepreneurship South Africa , Food for Us (Application software)
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/317141 , vital:59904
- Description: This study aimed to develop a sustainable business model that is cognisant of the fundamental principles of social enterprises that can sustain the operation of the Food for Us mobile application that links farmers with buyers in Eastern and Western Cape, South Africa. The Food for Us mobile application lacks a supporting sustainable social business model to sustain its continued operations, hence the need to develop one. In the study, data was generated qualitatively underpinned by an interpretive paradigm, in three workshops guided by the Delphi method. A stakeholder salience model was applied to identify key stakeholders and their salience. Three key stakeholders, namely users (farmers and buyers), Experts (App developers) and the consortium were identified. The study concluded that developing a sustainable social, innovative business model requires substantive consultation with multiple stakeholders in society. Every stakeholder is important and possesses varying salience, hence stakeholder mapping is an important exercise. The study further concluded that financial sustainability and social inclusion are critical social enterprise elements to consider in the process. The undertaking to enhance financial sustainability opens an understanding on the importance of income streams, the key activities, and value propositions offered by the mobile application. The need to remain socially inclusive brings forth questioning of value propositions, accessibility, user friendliness towards stakeholder diversity and needs. The study offers a solution for the Food for Us mobile application in the form of a prototype which is ready for testing, and if desired results are achieved, this can enhance the much needed continued operations of the mobile application. , Thesis (MBA) -- Faculty of Commerce, Rhodes Business School, 2022
- Full Text:
- Date Issued: 2022-10
- Authors: Tantsi, Idah Thato
- Date: 2022-10
- Subjects: Business planning South Africa , Sustainability South Africa , Mobile apps South Africa , Social responsibility of business South Africa , Social entrepreneurship South Africa , Food for Us (Application software)
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/317141 , vital:59904
- Description: This study aimed to develop a sustainable business model that is cognisant of the fundamental principles of social enterprises that can sustain the operation of the Food for Us mobile application that links farmers with buyers in Eastern and Western Cape, South Africa. The Food for Us mobile application lacks a supporting sustainable social business model to sustain its continued operations, hence the need to develop one. In the study, data was generated qualitatively underpinned by an interpretive paradigm, in three workshops guided by the Delphi method. A stakeholder salience model was applied to identify key stakeholders and their salience. Three key stakeholders, namely users (farmers and buyers), Experts (App developers) and the consortium were identified. The study concluded that developing a sustainable social, innovative business model requires substantive consultation with multiple stakeholders in society. Every stakeholder is important and possesses varying salience, hence stakeholder mapping is an important exercise. The study further concluded that financial sustainability and social inclusion are critical social enterprise elements to consider in the process. The undertaking to enhance financial sustainability opens an understanding on the importance of income streams, the key activities, and value propositions offered by the mobile application. The need to remain socially inclusive brings forth questioning of value propositions, accessibility, user friendliness towards stakeholder diversity and needs. The study offers a solution for the Food for Us mobile application in the form of a prototype which is ready for testing, and if desired results are achieved, this can enhance the much needed continued operations of the mobile application. , Thesis (MBA) -- Faculty of Commerce, Rhodes Business School, 2022
- Full Text:
- Date Issued: 2022-10
Genetic connectivity of the roundjaw bonefish (Albula glossodonta) in the Southwest Indian Ocean
- Talma, Sheena Claudia Aisa Lydie
- Authors: Talma, Sheena Claudia Aisa Lydie
- Date: 2021-10-29
- Subjects: Bonefish Mauritius , Bonefish Seychelles , Bonefish Genetics , Bonefish Habitat , Bonefish Geographical distribution , Bonefish Larvae Dispersal , Genetic markers , Cytochrome b , Fish populations Mauritius , Fish populations Seychelles , Marine ecotourism , Saltwater fly fishing , Bonefish fisheries Catch effort
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/192174 , vital:45202
- Description: The Southwest Indian Ocean (SWIO) islands of Mauritius and Seychelles are both highly dependent on tourism and fisheries for their economies. One of the growing ecotourism sectors is saltwater fly fishing, an industry based on catch-and-release fishing for a host of species, including bonefishes. Bonefishes (Albula spp.) have received significant research attention in the Pacific and Atlantic Oceans, with only sporadic research conducted in the Indian Ocean. My project aimed to investigate the genetic connectivity of the roundjaw bonefish (Albula glossodonta) in two island states (Seychelles and Mauritius) within the SWIO using a mitochondrial genetic marker (cyt-b) and next generation sequencing (ddRADseq). Samples collected were grouped based on their spatial distribution. The Seychelles consisted of four island groups (Inner Island Group, Aldabra Group, Amirantes and Alphonse Group, and Farquhar Group) whereas Mauritius was represented by one island group (Saint Brandon). Genetic analyses were undertaken between and within each of these groups. Mitochondrial cytochrome-b identified two species of bonefish: Albula glossodonta and Albula oligolepis; the latter was only genetically identified from the Inner Island Group. I hypothesise that this is due to habitat partitioning, with A. oligolepis being a deeper dwelling bonefish species compared to A. glossodonta, which occupies shallow water habitats such as sand flats, atoll lagoons and reef flats. Neutral SNP loci revealed a panmictic pattern of distribution for A. glossodonta throughout the Seychelles Island groups but showed a pattern of weak structure between Seychelles and Mauritius. Genetic diversity indices such as allelic richness, showed low diversity across the sampling sites (AR range: 1.761-1.889). Population structure tests such as pairwise FST showed low but significant population structure. The highest FST indices were recorded between the Aldabra and Farquhar Groups, as well as the Aldabra and Saint Brandon Groups (0.044 ± 0.000 and 0.040 ± 0.000, respectively). Descriptive tests such as PCA and DAPC showed similar trends, whereby Saint Brandon clustered separately from the other samples from the Seychelles Island groups. However, these trends were Abstract seen at very low variations (PCA axes 1 and 2 accounted for only 2.0 and 1.9 % of the total variation, respectively). A population assignment test grouped the individuals as one ancestral population. A spatial principal component analysis showed that Saint Brandon was dissimilar to the Seychelles Island groups. Like other Elopomorph species, bonefishes have leptocephalus larvae capable of long-distance dispersal which may explain the well-mixed genetic population observed within the Seychelles islands. Although currents within the Indian Ocean, especially on a mesoscale, are not well understood, the South Equatorial Current likely facilitates connectivity between the Seychelles islands while also limiting gene flow between Seychelles and Mauritius. Understanding population structure is important for informing the appropriate management and conservation strategies, especially in oceanic nations where data informing important industries like tourism and fisheries are often limited. The bonefish fly fishing industry is well-known to be a lucrative sector, generating, for example US$ 1.4 million a year in the Bahamas. This study recognised that there are numerous knowledge gaps relevant to the bonefish industry that need to be addressed, including: 1) understanding the socio-economic importance of fly fishing to island states like Seychelles, 2) estimating the abundance and species distribution of bonefishes within Seychelles, 3) understanding effectiveness of MPAs for recreational fishery species like bonefish and, lastly, 4) generating more fishery-relevant biological information on the heavily targeted fly fishing species within Seychelles. These needs must be met to inform management plans and to better manage the fly fishing ventures that target species like bonefish. , Thesis (MSc) -- Faculty of Science, Ichthyology and Fisheries Science, 2021
- Full Text:
- Date Issued: 2021-10-29
- Authors: Talma, Sheena Claudia Aisa Lydie
- Date: 2021-10-29
- Subjects: Bonefish Mauritius , Bonefish Seychelles , Bonefish Genetics , Bonefish Habitat , Bonefish Geographical distribution , Bonefish Larvae Dispersal , Genetic markers , Cytochrome b , Fish populations Mauritius , Fish populations Seychelles , Marine ecotourism , Saltwater fly fishing , Bonefish fisheries Catch effort
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/192174 , vital:45202
- Description: The Southwest Indian Ocean (SWIO) islands of Mauritius and Seychelles are both highly dependent on tourism and fisheries for their economies. One of the growing ecotourism sectors is saltwater fly fishing, an industry based on catch-and-release fishing for a host of species, including bonefishes. Bonefishes (Albula spp.) have received significant research attention in the Pacific and Atlantic Oceans, with only sporadic research conducted in the Indian Ocean. My project aimed to investigate the genetic connectivity of the roundjaw bonefish (Albula glossodonta) in two island states (Seychelles and Mauritius) within the SWIO using a mitochondrial genetic marker (cyt-b) and next generation sequencing (ddRADseq). Samples collected were grouped based on their spatial distribution. The Seychelles consisted of four island groups (Inner Island Group, Aldabra Group, Amirantes and Alphonse Group, and Farquhar Group) whereas Mauritius was represented by one island group (Saint Brandon). Genetic analyses were undertaken between and within each of these groups. Mitochondrial cytochrome-b identified two species of bonefish: Albula glossodonta and Albula oligolepis; the latter was only genetically identified from the Inner Island Group. I hypothesise that this is due to habitat partitioning, with A. oligolepis being a deeper dwelling bonefish species compared to A. glossodonta, which occupies shallow water habitats such as sand flats, atoll lagoons and reef flats. Neutral SNP loci revealed a panmictic pattern of distribution for A. glossodonta throughout the Seychelles Island groups but showed a pattern of weak structure between Seychelles and Mauritius. Genetic diversity indices such as allelic richness, showed low diversity across the sampling sites (AR range: 1.761-1.889). Population structure tests such as pairwise FST showed low but significant population structure. The highest FST indices were recorded between the Aldabra and Farquhar Groups, as well as the Aldabra and Saint Brandon Groups (0.044 ± 0.000 and 0.040 ± 0.000, respectively). Descriptive tests such as PCA and DAPC showed similar trends, whereby Saint Brandon clustered separately from the other samples from the Seychelles Island groups. However, these trends were Abstract seen at very low variations (PCA axes 1 and 2 accounted for only 2.0 and 1.9 % of the total variation, respectively). A population assignment test grouped the individuals as one ancestral population. A spatial principal component analysis showed that Saint Brandon was dissimilar to the Seychelles Island groups. Like other Elopomorph species, bonefishes have leptocephalus larvae capable of long-distance dispersal which may explain the well-mixed genetic population observed within the Seychelles islands. Although currents within the Indian Ocean, especially on a mesoscale, are not well understood, the South Equatorial Current likely facilitates connectivity between the Seychelles islands while also limiting gene flow between Seychelles and Mauritius. Understanding population structure is important for informing the appropriate management and conservation strategies, especially in oceanic nations where data informing important industries like tourism and fisheries are often limited. The bonefish fly fishing industry is well-known to be a lucrative sector, generating, for example US$ 1.4 million a year in the Bahamas. This study recognised that there are numerous knowledge gaps relevant to the bonefish industry that need to be addressed, including: 1) understanding the socio-economic importance of fly fishing to island states like Seychelles, 2) estimating the abundance and species distribution of bonefishes within Seychelles, 3) understanding effectiveness of MPAs for recreational fishery species like bonefish and, lastly, 4) generating more fishery-relevant biological information on the heavily targeted fly fishing species within Seychelles. These needs must be met to inform management plans and to better manage the fly fishing ventures that target species like bonefish. , Thesis (MSc) -- Faculty of Science, Ichthyology and Fisheries Science, 2021
- Full Text:
- Date Issued: 2021-10-29
Aspects of the ecology and biology of Gilchristella aestuarius (G & T) (Pisces: Clupeidae) in the Swartkops estuary, Port Elizabeth
- Talbot, Marie Marcel Jean-Francois
- Authors: Talbot, Marie Marcel Jean-Francois
- Date: 1982-12
- Subjects: Fishes -- Ecology -- South Africa -- Swartkops River Estuary , Swartkops River Estuary (South Africa)
- Language: English
- Type: Master's theses , Manuscripct
- Identifier: http://hdl.handle.net/10948/52352 , vital:43613
- Description: The Department of Zoology at the University of Port Elizabeth has an ongoing programme on the Swartkops estuary with the eventual aim of drawing up the energy pathways of the system. Marais (1976) has investigated the nutritional ecology of the grunter Pommadasys cormersoni while Melville-Smith (1978) and Melville-Smith and Baird (1981) reported on the ecology of larval fish. Winter (1979) studied the ecological parameters of fish populations, but this work was not a detailed account of each population. Wooldridge (1979) studied components of the 3 zooplankton community in some detail. It became evident that there was a significant lack of understanding of the ecological relationships between plankton and piscivorous fish, which was crucial to the elucidation of the interactions and trophodynamics of the Swartkops estuarine system. Since G. aestuarius is an important link in the energy pathway from the plankton to the nekton, and in terms of numbers dominates the seine net catches made in the estuary (Winter, 1979), this study was motivated. The aim was to investigate the important biological parameters of the estuarine round herring population namely the population structure, distribution and abundance, individual growth rate from field data, the food and feeding habits, reproduction and respiration, all of which are essential for the understanding of the dynamics of a species. These parameters were later converted into energy terms and the construction of an energy budget was attempted. , Thesis (MSc) -- Faculty of Science, 1982
- Full Text:
- Date Issued: 1982-12
- Authors: Talbot, Marie Marcel Jean-Francois
- Date: 1982-12
- Subjects: Fishes -- Ecology -- South Africa -- Swartkops River Estuary , Swartkops River Estuary (South Africa)
- Language: English
- Type: Master's theses , Manuscripct
- Identifier: http://hdl.handle.net/10948/52352 , vital:43613
- Description: The Department of Zoology at the University of Port Elizabeth has an ongoing programme on the Swartkops estuary with the eventual aim of drawing up the energy pathways of the system. Marais (1976) has investigated the nutritional ecology of the grunter Pommadasys cormersoni while Melville-Smith (1978) and Melville-Smith and Baird (1981) reported on the ecology of larval fish. Winter (1979) studied the ecological parameters of fish populations, but this work was not a detailed account of each population. Wooldridge (1979) studied components of the 3 zooplankton community in some detail. It became evident that there was a significant lack of understanding of the ecological relationships between plankton and piscivorous fish, which was crucial to the elucidation of the interactions and trophodynamics of the Swartkops estuarine system. Since G. aestuarius is an important link in the energy pathway from the plankton to the nekton, and in terms of numbers dominates the seine net catches made in the estuary (Winter, 1979), this study was motivated. The aim was to investigate the important biological parameters of the estuarine round herring population namely the population structure, distribution and abundance, individual growth rate from field data, the food and feeding habits, reproduction and respiration, all of which are essential for the understanding of the dynamics of a species. These parameters were later converted into energy terms and the construction of an energy budget was attempted. , Thesis (MSc) -- Faculty of Science, 1982
- Full Text:
- Date Issued: 1982-12
Understanding the contribution of Land Use/Cover (LUC) classes on soil erosion and sedimentation using sediment fingerprinting technique and RUSLE in a GIS interface at sub-catchment level
- Taeni, Thembalethu (https://orcid.org/ 0000-0001-7662-8652)
- Authors: Taeni, Thembalethu (https://orcid.org/ 0000-0001-7662-8652)
- Date: 2021-04
- Subjects: Geographic information systems , Soil erosion , River sediments
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/20920 , vital:46747
- Description: Soil erosion by water is the major source of soil degradation in the world, and South Africa (SA) is not an exception particularly in the Free State (FS) Province. In South Africa, the Caledon River Catchment in the FS Province has been identified as one of the regions where soil erosion has been prevalent for decades. Evidence across many parts of the catchment show a widespread of soil erosion and the contaminant flux associated with sediment into river systems and reservoirs; including the Welbedatcht dam and Carthcart-drift dam in Ladybrand. It is of these issues that the current work aimed at enhancing the understanding of sediment sources and soil erosion dynamics at the Caledon River Basin. The objectives of the study were to locate sources of suspended sediments and to assess and quantify the contribution of Land Use Cover (LUC) classes to water erosion and sediment yield at a sub – catchment level of the Caledon River Basin. To achieve the objectives set out for this research, a study was conducted at a sub - catchment level of the Caledon River Basin in the FS Province, South Africa. The sediment–fingerprinting approach and the Revised Universal Soil Loss Equation (RUSLE) model were used in the study under Geographic Information System (GIS) settings. A qualitative and quantitative interpretation of the geochemical data were used to evaluate the potential for distinguishing catchment sediment sources. The application of multivariate sediment mixing models incorporating Monte Carlo simulations was undertaken to investigate recent variations in sediment sources. Lastly, to document the impact of LUC change on soil erosion; data from soil profile database, Landsat 8 OLI–TIRS and climate (i.e. rainfall) were used to assess and map the spatial and temporal pattern changes of soil erosion at a sub – catchment level as related to LUC changes. In this study, the sub–catchment was classified into 6 LUC classes. Thereafter soil erosion was quantified for three consecutive years namely; 2015, 2016 and 2018 using the soil erosion factors as GIS–layers. The investigation of sediment source types and spatial provenance in the catchment showed that the grassland areas have consistently been the main sediment source (83 percent) throughout the study period. Findings further showed that there was an increase in contributions from cultivation and abandoned cultivated fields. Sediment contribution from surface sources was dominant (54 percent) and thereafter, subsurface sediment input increased (62 percent). This trend is indicative of increased severity of gully erosion in the area and thus is consistent with other studies. To comprehend the influence of LUC class modification dynamics on soil erosion, water erosion in particular at the sub-catchment commencing from 2015 to 2018 (4 years), multi-temporal Landsat 8 information jointly with the RUSLE model were used. A post-classification, LUC class alteration comparison revealed that water bodies, shrubs and forested region and grassland declined by 0.27 percent, 15.60 percent, and 37.60 percent, respectively. On the other hand, regions under Bad lands, and bare-soil and built-up regions including agricultural region expanded by 2.22 percent, 5.78 percent, and 45.67 percent respectively, between 2015 to 2018 study period. The average yearly soil loss decreased at the sub-catchment and was 10.23,5.71 and 5.82 t ⋅ ha -1 ⋅ yr-1 for 2015, 2016 and 2018 respectively. Although soil loss lessened for the duration of the perceived period, a closer scrutiny revealed that there were nonetheless seeming signs of persistent escalation in soil loss risk. These signs were mostly shown in the elevated parts of the sub-catchment as shown by the red regions on the soil loss map. Additional examination of soil loss findings by LUC classes categories further indicated that most LUC classes categories, including Bare-soil and built-up area, agricultural-land, grassland, and region under shrubs and forests, showed increased soil loss levels during the 4 years’ study period at the sub-catchment. The information on the comparative vividness of diverse sediment sources given by the study must be observed as a noteworthy development towards an understanding of the sediment source dynamics in agricultural river based catchments; more so of the Caledon River Basin. Further research is recommended for other erosion prone catchments in South Africa to identify additional evidence of the spatial and temporal variations in soil erosion and sediment sources. The results of the study suggest that the procedure of assimilating the GIS and RS with the RUSLE model is not just precise, time-efficient and exact in recognizing soil erosion susceptible regions in geospatial and temporal standings. However, it is a cost-efficient substitute to standard field-founded approaches. , Thesis (MSc) (Soil Science) -- University of Fort Hare, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Taeni, Thembalethu (https://orcid.org/ 0000-0001-7662-8652)
- Date: 2021-04
- Subjects: Geographic information systems , Soil erosion , River sediments
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/20920 , vital:46747
- Description: Soil erosion by water is the major source of soil degradation in the world, and South Africa (SA) is not an exception particularly in the Free State (FS) Province. In South Africa, the Caledon River Catchment in the FS Province has been identified as one of the regions where soil erosion has been prevalent for decades. Evidence across many parts of the catchment show a widespread of soil erosion and the contaminant flux associated with sediment into river systems and reservoirs; including the Welbedatcht dam and Carthcart-drift dam in Ladybrand. It is of these issues that the current work aimed at enhancing the understanding of sediment sources and soil erosion dynamics at the Caledon River Basin. The objectives of the study were to locate sources of suspended sediments and to assess and quantify the contribution of Land Use Cover (LUC) classes to water erosion and sediment yield at a sub – catchment level of the Caledon River Basin. To achieve the objectives set out for this research, a study was conducted at a sub - catchment level of the Caledon River Basin in the FS Province, South Africa. The sediment–fingerprinting approach and the Revised Universal Soil Loss Equation (RUSLE) model were used in the study under Geographic Information System (GIS) settings. A qualitative and quantitative interpretation of the geochemical data were used to evaluate the potential for distinguishing catchment sediment sources. The application of multivariate sediment mixing models incorporating Monte Carlo simulations was undertaken to investigate recent variations in sediment sources. Lastly, to document the impact of LUC change on soil erosion; data from soil profile database, Landsat 8 OLI–TIRS and climate (i.e. rainfall) were used to assess and map the spatial and temporal pattern changes of soil erosion at a sub – catchment level as related to LUC changes. In this study, the sub–catchment was classified into 6 LUC classes. Thereafter soil erosion was quantified for three consecutive years namely; 2015, 2016 and 2018 using the soil erosion factors as GIS–layers. The investigation of sediment source types and spatial provenance in the catchment showed that the grassland areas have consistently been the main sediment source (83 percent) throughout the study period. Findings further showed that there was an increase in contributions from cultivation and abandoned cultivated fields. Sediment contribution from surface sources was dominant (54 percent) and thereafter, subsurface sediment input increased (62 percent). This trend is indicative of increased severity of gully erosion in the area and thus is consistent with other studies. To comprehend the influence of LUC class modification dynamics on soil erosion, water erosion in particular at the sub-catchment commencing from 2015 to 2018 (4 years), multi-temporal Landsat 8 information jointly with the RUSLE model were used. A post-classification, LUC class alteration comparison revealed that water bodies, shrubs and forested region and grassland declined by 0.27 percent, 15.60 percent, and 37.60 percent, respectively. On the other hand, regions under Bad lands, and bare-soil and built-up regions including agricultural region expanded by 2.22 percent, 5.78 percent, and 45.67 percent respectively, between 2015 to 2018 study period. The average yearly soil loss decreased at the sub-catchment and was 10.23,5.71 and 5.82 t ⋅ ha -1 ⋅ yr-1 for 2015, 2016 and 2018 respectively. Although soil loss lessened for the duration of the perceived period, a closer scrutiny revealed that there were nonetheless seeming signs of persistent escalation in soil loss risk. These signs were mostly shown in the elevated parts of the sub-catchment as shown by the red regions on the soil loss map. Additional examination of soil loss findings by LUC classes categories further indicated that most LUC classes categories, including Bare-soil and built-up area, agricultural-land, grassland, and region under shrubs and forests, showed increased soil loss levels during the 4 years’ study period at the sub-catchment. The information on the comparative vividness of diverse sediment sources given by the study must be observed as a noteworthy development towards an understanding of the sediment source dynamics in agricultural river based catchments; more so of the Caledon River Basin. Further research is recommended for other erosion prone catchments in South Africa to identify additional evidence of the spatial and temporal variations in soil erosion and sediment sources. The results of the study suggest that the procedure of assimilating the GIS and RS with the RUSLE model is not just precise, time-efficient and exact in recognizing soil erosion susceptible regions in geospatial and temporal standings. However, it is a cost-efficient substitute to standard field-founded approaches. , Thesis (MSc) (Soil Science) -- University of Fort Hare, 2021
- Full Text:
- Date Issued: 2021-04
Inflation, exchange rate and unemployment nexuses in South Africa: lessons from the Inflation Targeting Framework
- Taderera, Christie Simbarashe
- Authors: Taderera, Christie Simbarashe
- Date: 2021-12
- Subjects: Foreign exchange rates -- South Africa , Inflation (Finance) -- South Africa , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54752 , vital:47656
- Description: Unemployment, inflation and exchange rate are key macroeconomic indicators and determinants of the development of a nation, but their relationship remain ambiguous. From the last quarter of 1994 to the same period in 2019, unemployment in South Africa increased from 20 percent to 29.1 percent while over the same period, inflation fell from 15 percent to 4.5 percent. Exchange rate at the same time has increased from 3.55Rand: 1USD to 14.45Rand: 1USD (World Bank Data, 2020). With the adoption of inflation targeting framework as a way of stabilising the general price level which has a trickle effect on unemployment, South Africa has a relatively high unemployment rate of 29.1 percent. This study investigates the relationship between unemployment, inflation and exchange rate in South Africa from 2009 Quarter 1 to 2020 Quarter 1. Furthermore, the study examines the relationship between employment, inflation and exchange rate from 1970 to 2019. Lastly the study investigates the inflation threshold from 1970 to 2019. The study employs the Autoregressive Distributed Lag (ARDL) model and shows that there is no short run and long run relationship between unemployment, inflation and exchange rate. There was however a short run and long run relationship between employment, inflation, exchange rate. In a long run analysis, there is a positive relationship between employment and economic growth for both in the short run and long run. Using the conditional least squares method, an inflation threshold of 5% was found to maximise employment in South Africa vindicating the inflation target of 3-5 percent. Based on the findings of this study, it is recommended that policy measures that increase government expenditure and economic growth be made. Thus, policy makers should increase government expenditure, either by running budget deficits or by collecting more revenue to finance its expenditures so as to increase employment or decrease unemployment without incurring the risk of crowding out. Additionally, from the inflation threshold examination, the current interest rate manipulation by raising or lowering the rate must be used to ensure inflation is kept below 5 per cent. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Taderera, Christie Simbarashe
- Date: 2021-12
- Subjects: Foreign exchange rates -- South Africa , Inflation (Finance) -- South Africa , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54752 , vital:47656
- Description: Unemployment, inflation and exchange rate are key macroeconomic indicators and determinants of the development of a nation, but their relationship remain ambiguous. From the last quarter of 1994 to the same period in 2019, unemployment in South Africa increased from 20 percent to 29.1 percent while over the same period, inflation fell from 15 percent to 4.5 percent. Exchange rate at the same time has increased from 3.55Rand: 1USD to 14.45Rand: 1USD (World Bank Data, 2020). With the adoption of inflation targeting framework as a way of stabilising the general price level which has a trickle effect on unemployment, South Africa has a relatively high unemployment rate of 29.1 percent. This study investigates the relationship between unemployment, inflation and exchange rate in South Africa from 2009 Quarter 1 to 2020 Quarter 1. Furthermore, the study examines the relationship between employment, inflation and exchange rate from 1970 to 2019. Lastly the study investigates the inflation threshold from 1970 to 2019. The study employs the Autoregressive Distributed Lag (ARDL) model and shows that there is no short run and long run relationship between unemployment, inflation and exchange rate. There was however a short run and long run relationship between employment, inflation, exchange rate. In a long run analysis, there is a positive relationship between employment and economic growth for both in the short run and long run. Using the conditional least squares method, an inflation threshold of 5% was found to maximise employment in South Africa vindicating the inflation target of 3-5 percent. Based on the findings of this study, it is recommended that policy measures that increase government expenditure and economic growth be made. Thus, policy makers should increase government expenditure, either by running budget deficits or by collecting more revenue to finance its expenditures so as to increase employment or decrease unemployment without incurring the risk of crowding out. Additionally, from the inflation threshold examination, the current interest rate manipulation by raising or lowering the rate must be used to ensure inflation is kept below 5 per cent. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
The bastards of Euripides: illegitimacy in the Hippolytus, the Andromache, and the Ion
- Sülter, James Nicholas Edwin
- Authors: Sülter, James Nicholas Edwin
- Date: 2021-10-29
- Subjects: Euripides , Euripides Criticism and interpretation , Euripides. Hippolytus , Euripides. Andromache , Euripides. Ion , Illegitimacy in literature , Tragedy History and criticism , Citizenship in literature
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/190030 , vital:44957
- Description: The Pericles Citizenship Law of 451 made citizenship contingent on an individual man having Athenian blood on both his father and mother’s side. Men with foreign mothers were denied any rights to the key institutions that conferred Athenian belonging, such as deme and phratry membership, as well as, of course, citizenship. When, however, the Peloponnesian War began in 431, the population of Athenian citizens was quickly diminished by military conflict and plague and they sought a solution to repopulate their numbers with as little change to the original law as possible. The result was an amendment in 429 allowing citizens with no living legitimate (γνήσιοι) heirs to legitimise their bastards (νόθοι) in their place. A year after this, Euripides wrote the Hippolytus, a play that deals very closely with the issues of bastardy, bastards’ place in the polis and the oikos, and their treatment by those who are legitimate. As the war went on, he proceeded to produce two other plays containing bastard characters, the Andromache (c.425) and the Ion (c.413), in which he similarly explored the consequences of illegitimacy. In all three plays his attitude towards bastards is overwhelmingly sympathetic and the way he chooses to present their situations suggests his disagreement with the arrogance and antipathy that continued to push many of these often very worthy individuals to the fringes of society. This thesis seeks to examine Euripides’ presentation of bastards through a close reading of the relevant texts, in order to understand how the plays reacted to the contemporary circumstances of and what comments they are making. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2021
- Full Text:
- Date Issued: 2021-10-29
- Authors: Sülter, James Nicholas Edwin
- Date: 2021-10-29
- Subjects: Euripides , Euripides Criticism and interpretation , Euripides. Hippolytus , Euripides. Andromache , Euripides. Ion , Illegitimacy in literature , Tragedy History and criticism , Citizenship in literature
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/190030 , vital:44957
- Description: The Pericles Citizenship Law of 451 made citizenship contingent on an individual man having Athenian blood on both his father and mother’s side. Men with foreign mothers were denied any rights to the key institutions that conferred Athenian belonging, such as deme and phratry membership, as well as, of course, citizenship. When, however, the Peloponnesian War began in 431, the population of Athenian citizens was quickly diminished by military conflict and plague and they sought a solution to repopulate their numbers with as little change to the original law as possible. The result was an amendment in 429 allowing citizens with no living legitimate (γνήσιοι) heirs to legitimise their bastards (νόθοι) in their place. A year after this, Euripides wrote the Hippolytus, a play that deals very closely with the issues of bastardy, bastards’ place in the polis and the oikos, and their treatment by those who are legitimate. As the war went on, he proceeded to produce two other plays containing bastard characters, the Andromache (c.425) and the Ion (c.413), in which he similarly explored the consequences of illegitimacy. In all three plays his attitude towards bastards is overwhelmingly sympathetic and the way he chooses to present their situations suggests his disagreement with the arrogance and antipathy that continued to push many of these often very worthy individuals to the fringes of society. This thesis seeks to examine Euripides’ presentation of bastards through a close reading of the relevant texts, in order to understand how the plays reacted to the contemporary circumstances of and what comments they are making. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2021
- Full Text:
- Date Issued: 2021-10-29
A Talent Retention Framework for the South African Information Technology Sector
- Authors: Swart, Jean-pierre
- Date: 2022-04
- Subjects: Information Technology -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58212 , vital:58728
- Description: The South African Information Technology (IT) sector is experiencing a chronic skills shortage, and the skills gap is widening. South African organisations try to retain existing skilled IT professionals in order to compete on a global platform, whilst simultaneously competing against international organisations who poach IT professionals from South Africa in what is referred to as “brain drain”. The South African IT sector is an increasingly important contributor to South Africa’s GDP, with several international corporates investing and creating opportunities in South Arica, including IBM, Dell, Microsoft and Intel. The retention of skilled IT professionals in South Africa is complex and costly due to the high demand for these professionals. An overview of the literature was provided that commenced with a broad analysis of strategic talent management frameworks in order to present a holistic view of talent management. From this broad analysis, the literature review narrowed the focus to the retention of talent. This section focused on the impact of organisational culture and employee engagement, whilst considering the critical roles that managers and leaders play in culture and employee engagement pertinent to the South African IT sector. The research paradigm adopted for this research was interpretivist and the methodology was qualitative research. The empirical data was collected through conducting semi-structured interviews with six IT professionals with extensive experience in the sector, and who directly play a role in the management and retention of skilled IT professionals. Various themes were developed from the interviews, with a focus on the extent of the skills gap and considerations regarding organisational culture, employee engagement and expectations from leaders and managers detailed in the themes. Finally, a talent retention framework for the South African IT sector was developed from the emerging themes. The themes included culture and the work environment, remuneration and benefits, continuous growth and employee engagement. , Thesis (MA) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-04
- Authors: Swart, Jean-pierre
- Date: 2022-04
- Subjects: Information Technology -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58212 , vital:58728
- Description: The South African Information Technology (IT) sector is experiencing a chronic skills shortage, and the skills gap is widening. South African organisations try to retain existing skilled IT professionals in order to compete on a global platform, whilst simultaneously competing against international organisations who poach IT professionals from South Africa in what is referred to as “brain drain”. The South African IT sector is an increasingly important contributor to South Africa’s GDP, with several international corporates investing and creating opportunities in South Arica, including IBM, Dell, Microsoft and Intel. The retention of skilled IT professionals in South Africa is complex and costly due to the high demand for these professionals. An overview of the literature was provided that commenced with a broad analysis of strategic talent management frameworks in order to present a holistic view of talent management. From this broad analysis, the literature review narrowed the focus to the retention of talent. This section focused on the impact of organisational culture and employee engagement, whilst considering the critical roles that managers and leaders play in culture and employee engagement pertinent to the South African IT sector. The research paradigm adopted for this research was interpretivist and the methodology was qualitative research. The empirical data was collected through conducting semi-structured interviews with six IT professionals with extensive experience in the sector, and who directly play a role in the management and retention of skilled IT professionals. Various themes were developed from the interviews, with a focus on the extent of the skills gap and considerations regarding organisational culture, employee engagement and expectations from leaders and managers detailed in the themes. Finally, a talent retention framework for the South African IT sector was developed from the emerging themes. The themes included culture and the work environment, remuneration and benefits, continuous growth and employee engagement. , Thesis (MA) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-04
The design of a forensic psychiatric facility in George, Western Cape
- Authors: Swanpoel, Keila
- Date: 2021-12
- Subjects: Mental health facilities -- South Africa -- Designs and plans , Mental health facilities-- South Africa--Designs and plans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58585 , vital:59934
- Description: This study proposes a 21st-century asylum for the criminally insane where the aim of the study is to investigate the interface between mental health and the criminal justice system sectors and how architectural design can have an influence on the psychological reaction of patients in the built environment. The problem faced with criminally insane people is that they do not al - ways have the ideal environment to go to when they seek help. Criminally insane patients used to be housed in asylums with inhumane living con - ditions. Basic research is done to achieve a theoretical solution for the problem being faced and applied research is conducted to solve the problem on a practical level by developing techniques to initiate a project on a technical and practical level. Through the design, a safe sanctuary and an ideal environment for the mentally placeless in society for long-term stay, should be achieved. These patients who cannot live a normal daily life on their own without help and treatment, while there is a need for a form of incarceration on a humane level, where they can feel part of society and that their built environment can make a difference. , Thesis (MArch)-- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Swanpoel, Keila
- Date: 2021-12
- Subjects: Mental health facilities -- South Africa -- Designs and plans , Mental health facilities-- South Africa--Designs and plans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58585 , vital:59934
- Description: This study proposes a 21st-century asylum for the criminally insane where the aim of the study is to investigate the interface between mental health and the criminal justice system sectors and how architectural design can have an influence on the psychological reaction of patients in the built environment. The problem faced with criminally insane people is that they do not al - ways have the ideal environment to go to when they seek help. Criminally insane patients used to be housed in asylums with inhumane living con - ditions. Basic research is done to achieve a theoretical solution for the problem being faced and applied research is conducted to solve the problem on a practical level by developing techniques to initiate a project on a technical and practical level. Through the design, a safe sanctuary and an ideal environment for the mentally placeless in society for long-term stay, should be achieved. These patients who cannot live a normal daily life on their own without help and treatment, while there is a need for a form of incarceration on a humane level, where they can feel part of society and that their built environment can make a difference. , Thesis (MArch)-- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
The impact of transformed landscapes on the resource selection and occupancy of specialized browsing species in a lowland fynbos and renosterveld ecosystem
- Swanepoel, Hermanus Izak Johannes
- Authors: Swanepoel, Hermanus Izak Johannes
- 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/10948/54132 , vital:46308
- Description: Human activities have dramatically transformed the natural environment over the last century. In most cases these activities have resulted in the destruction and fragmentation of habitats. However, in some areas the transformation of landscapes through agriculture have created novel habitats which could benefit some species. The effect of these transformed landscapes on the resource selection and occupancy of antelope species in different vegetation types such as fynbos and renosterveld are still understudied. In order to investigate this,we conducted a study in the Overberg region of the Western Cape, South Africa. We studied theoccupancy and habitat useof five specialist browsing species (Tragelaphus scriptus sylvaticus(bushbuck), Rhaphicerus melanotis(cape grysbok), Sylvicapra grimmia(common duiker), Palea Capreolus(grey rhebok) and Rhaphicerus campestris(steenbok)) within a transformed landscape. We collected speciesdetection/ non-detectionand presence/ absence data using camera traps and road strip counts.Usinga single season, single species occupancy framework as a surrogate for habitat usewedeterminedhow transformed landscapes affected their occupancy. Using aniche factor analysis and resource selection functions wedetermine how transformed landscapes affected the resource selectionof these species. Our results from the resource selection analysis indicated that steenbok, grey rhebok, andcommon duiker included crops such as wheat and planted pastures in their resource selection while also including natural vegetation. Cape grysbok and bushbuck selected predominantly for natural vegetation areas such as critical biodiversity areas and ecological support areas while also including some crops in their resource selection. Our results from the occupancy analysis indicatedthat steenbok, grey rhebok and common duiker had a higher occupancy in the transformed landscape than in the natural landscape. Bushbuck and Cape grysbok showed little to no difference in their occupancy between land use types. The insight provided by our results will allow practitioners to maximise the potentialof these mosaic landscape in the Overberg for mammal conservation.The study also provides a baseline from which further research and monitoring programs can be developed to further understand the dynamics of this landscape. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Swanepoel, Hermanus Izak Johannes
- 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/10948/54132 , vital:46308
- Description: Human activities have dramatically transformed the natural environment over the last century. In most cases these activities have resulted in the destruction and fragmentation of habitats. However, in some areas the transformation of landscapes through agriculture have created novel habitats which could benefit some species. The effect of these transformed landscapes on the resource selection and occupancy of antelope species in different vegetation types such as fynbos and renosterveld are still understudied. In order to investigate this,we conducted a study in the Overberg region of the Western Cape, South Africa. We studied theoccupancy and habitat useof five specialist browsing species (Tragelaphus scriptus sylvaticus(bushbuck), Rhaphicerus melanotis(cape grysbok), Sylvicapra grimmia(common duiker), Palea Capreolus(grey rhebok) and Rhaphicerus campestris(steenbok)) within a transformed landscape. We collected speciesdetection/ non-detectionand presence/ absence data using camera traps and road strip counts.Usinga single season, single species occupancy framework as a surrogate for habitat usewedeterminedhow transformed landscapes affected their occupancy. Using aniche factor analysis and resource selection functions wedetermine how transformed landscapes affected the resource selectionof these species. Our results from the resource selection analysis indicated that steenbok, grey rhebok, andcommon duiker included crops such as wheat and planted pastures in their resource selection while also including natural vegetation. Cape grysbok and bushbuck selected predominantly for natural vegetation areas such as critical biodiversity areas and ecological support areas while also including some crops in their resource selection. Our results from the occupancy analysis indicatedthat steenbok, grey rhebok and common duiker had a higher occupancy in the transformed landscape than in the natural landscape. Bushbuck and Cape grysbok showed little to no difference in their occupancy between land use types. The insight provided by our results will allow practitioners to maximise the potentialof these mosaic landscape in the Overberg for mammal conservation.The study also provides a baseline from which further research and monitoring programs can be developed to further understand the dynamics of this landscape. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
Development of a therapeutic drug monitoring model for aminoglycosides at a private hospital in the Eastern Cape
- Authors: Swanepoel, Caro Mae
- Date: 2022-12
- Subjects: Aminoglycosides -- Eastern Cape , Nephrotoxicity -- Eastern Cape , Drug Monitoring
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60276 , vital:64291
- Description: Background: Aminoglycosides are highly effective against Gram-negative bacteria, including ESKAPE pathogens. However, aminoglycosides can cause nephrotoxicity and ototoxicity. Therapeutic drug monitoring (TDM) performed in patients receiving aminoglycosides can potentially reduce the development of antimicrobial resistance as well as aminoglycoside-induced toxicity and side effects. Primary Aim: The study aimed to identify TDM practices and subsequently develop a model for aminoglycoside TDM at a private hospital in the Eastern Cape. Methodology: Phase One involved the collection of data from the hospital’s database, using a purpose-designed data collection tool. Data from 135 eligible patients who received aminoglycoside therapy from June 2019 to June 2020 were reviewed. Data was captured, coded and analysed (using differential analysis). Semi-structured interviews were conducted (Phase Two) with three physicians and five pharmacists. Interview transcripts were coded using a combination of inductive and deductive coding techniques, followed by thematic analysis. The data was triangulated and used, together with recommendations from similar guidelines, to design a context-specific model for aminoglycoside TDM at the hospital. Results and Discussion: Results from Phases One and Two showed that TDM was not being performed correctly at the hospital. The overall incidence of aminoglycoside TDM was 19.26% (N = 135). The highest incidence of TDM occurred in ICU patients (n = 31; 51.61%). Drug monitoring was not consistently conducted in elderly (≥65 years) patients, or in those with signs of renal impairment; even though interviewed physicians and pharmacists identified elderly and renally impaired patients as “high risk” patients. Challenges regarding implementation of aminoglycoside TDM were explored. A lack of competent staff and time constraints were identified as major barriers to quality TDM services. Conclusion: The daily practices and TDM challenges at the site were considered during the design of the aminoglycoside TDM model, which can potentially facilitate better execution and monitoring practices for aminoglycosides at the private hospital. , Thesis (MA) -- Faculty of Health Sciences 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Swanepoel, Caro Mae
- Date: 2022-12
- Subjects: Aminoglycosides -- Eastern Cape , Nephrotoxicity -- Eastern Cape , Drug Monitoring
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60276 , vital:64291
- Description: Background: Aminoglycosides are highly effective against Gram-negative bacteria, including ESKAPE pathogens. However, aminoglycosides can cause nephrotoxicity and ototoxicity. Therapeutic drug monitoring (TDM) performed in patients receiving aminoglycosides can potentially reduce the development of antimicrobial resistance as well as aminoglycoside-induced toxicity and side effects. Primary Aim: The study aimed to identify TDM practices and subsequently develop a model for aminoglycoside TDM at a private hospital in the Eastern Cape. Methodology: Phase One involved the collection of data from the hospital’s database, using a purpose-designed data collection tool. Data from 135 eligible patients who received aminoglycoside therapy from June 2019 to June 2020 were reviewed. Data was captured, coded and analysed (using differential analysis). Semi-structured interviews were conducted (Phase Two) with three physicians and five pharmacists. Interview transcripts were coded using a combination of inductive and deductive coding techniques, followed by thematic analysis. The data was triangulated and used, together with recommendations from similar guidelines, to design a context-specific model for aminoglycoside TDM at the hospital. Results and Discussion: Results from Phases One and Two showed that TDM was not being performed correctly at the hospital. The overall incidence of aminoglycoside TDM was 19.26% (N = 135). The highest incidence of TDM occurred in ICU patients (n = 31; 51.61%). Drug monitoring was not consistently conducted in elderly (≥65 years) patients, or in those with signs of renal impairment; even though interviewed physicians and pharmacists identified elderly and renally impaired patients as “high risk” patients. Challenges regarding implementation of aminoglycoside TDM were explored. A lack of competent staff and time constraints were identified as major barriers to quality TDM services. Conclusion: The daily practices and TDM challenges at the site were considered during the design of the aminoglycoside TDM model, which can potentially facilitate better execution and monitoring practices for aminoglycosides at the private hospital. , Thesis (MA) -- Faculty of Health Sciences 2022
- Full Text:
- Date Issued: 2022-12
Main thesis title: subtitle if needed. If no subtitle follow instructions in manual
- Authors: Surname, name
- 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/10948/57885 , vital:58305
- Description: Abstract. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text: false
- Date Issued: 2022-04
- Authors: Surname, name
- 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/10948/57885 , vital:58305
- Description: Abstract. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text: false
- Date Issued: 2022-04
Main thesis title: subtitle if needed. If no subtitle follow instructions in manual
- Authors: Surname, name
- 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/10948/58827 , vital:60168
- Description: Abstract. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-04
- Authors: Surname, name
- 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/10948/58827 , vital:60168
- Description: Abstract. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-04