Academic resilience of engineering students: a case study
- Authors: Mapaling, Curwyn
- Date: 2023-04
- Subjects: Resilience (Personality trait) , Engineering students
- Language: English
- Type: Doctoral's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60775 , vital:67337
- Description: Extensive research has been done and much knowledge exists about academic resilience among youth in school contexts, but there is a lack of data and literature on academic resilience at university level. This knowledge gap is especially critical in disciplines such as engineering, where student dropout rates have historically been high. In 2017, a redesigned engineering degree qualification, the Bachelor of Engineering Technology, was introduced at South African universities. This case study explored the academic resilience of the first cohort of final-year Bachelor of Engineering Technology students at Nelson Mandela University. Mixed methods and multiple theories were employed, which allowed for the generation of rich data for this exploratory case study. In the quantitative phase, 66 students from Industrial, Civil, Electrical, Marine and Mechanical Engineering courses participated by completing a series of standardised psychometric measurement tools. Descriptive and inferential statistical analysis was conducted on the quantitative data collected from the measurement items. In the qualitative phase, 13 engineering students, 6 engineering lecturers and 6 support staff members were interviewed individually, to explore their perceptions and experiences of academic resilience. Qualitative data generated through the semi-structured interviews were analysed using thematic analysis. The findings suggested that staff and students perceive academic resilience differently. It also seems that staff wellbeing impacts the academic resilience of students, and the relationship between staff wellness and student academic resilience is suggested as a next step for research on the topic of academic resilience at university level, especially among courses with high drop-out rates like engineering. Although not generalisable, it appears that a variety of extracurricular support structures and initiatives and strong relationships between the higher education sector and engineering industries can contribute significantly to students' academic resilience. , Thesis (PhD) -- Faculty of Education, School of Post Graduate Education, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Mapaling, Curwyn
- Date: 2023-04
- Subjects: Resilience (Personality trait) , Engineering students
- Language: English
- Type: Doctoral's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60775 , vital:67337
- Description: Extensive research has been done and much knowledge exists about academic resilience among youth in school contexts, but there is a lack of data and literature on academic resilience at university level. This knowledge gap is especially critical in disciplines such as engineering, where student dropout rates have historically been high. In 2017, a redesigned engineering degree qualification, the Bachelor of Engineering Technology, was introduced at South African universities. This case study explored the academic resilience of the first cohort of final-year Bachelor of Engineering Technology students at Nelson Mandela University. Mixed methods and multiple theories were employed, which allowed for the generation of rich data for this exploratory case study. In the quantitative phase, 66 students from Industrial, Civil, Electrical, Marine and Mechanical Engineering courses participated by completing a series of standardised psychometric measurement tools. Descriptive and inferential statistical analysis was conducted on the quantitative data collected from the measurement items. In the qualitative phase, 13 engineering students, 6 engineering lecturers and 6 support staff members were interviewed individually, to explore their perceptions and experiences of academic resilience. Qualitative data generated through the semi-structured interviews were analysed using thematic analysis. The findings suggested that staff and students perceive academic resilience differently. It also seems that staff wellbeing impacts the academic resilience of students, and the relationship between staff wellness and student academic resilience is suggested as a next step for research on the topic of academic resilience at university level, especially among courses with high drop-out rates like engineering. Although not generalisable, it appears that a variety of extracurricular support structures and initiatives and strong relationships between the higher education sector and engineering industries can contribute significantly to students' academic resilience. , Thesis (PhD) -- Faculty of Education, School of Post Graduate Education, 2023
- Full Text:
- Date Issued: 2023-04
Achieving consumers’ water demand through sustainable development
- Authors: Sibiya, Sandile
- Date: 2023-04
- Subjects: Water demand management , Sustainable development
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/63100 , vital:73186
- Description: This study is concentrated around achieving consumer water demand through sustainable development of water infrastructure within the King Cetshwayo District, which is still very limited. The goal of this study was to look into the technical issues that arise from inferior project delivery, poor infrastructural maintenance, and the elements that contribute to suboptimal service delivery of water infrastructure projects. This research was conducted using qualitative research, which offers insight from a participant’s point of view. It focuses on human experiences and communal circumstances. It is therefore, sound judgement to use a qualitative research method to collect data using a semi-structured interview guide. The researcher utilised deliberate sampling using purposive sampling. The recruitment process targeted the corporate and the senior management levels. This study's objective was to investigate the elements involved in developing sustainable water infrastructure to fulfil consumers water demand and to identify strategies for using sustainable development techniques to address the water scarcity. The study findings reveal that the main issues with poor service delivery include service delivery issues, cost overruns, unsatisfactory performance, improper use of funds and project completion delays. , Thesis (Ma) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Sibiya, Sandile
- Date: 2023-04
- Subjects: Water demand management , Sustainable development
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/63100 , vital:73186
- Description: This study is concentrated around achieving consumer water demand through sustainable development of water infrastructure within the King Cetshwayo District, which is still very limited. The goal of this study was to look into the technical issues that arise from inferior project delivery, poor infrastructural maintenance, and the elements that contribute to suboptimal service delivery of water infrastructure projects. This research was conducted using qualitative research, which offers insight from a participant’s point of view. It focuses on human experiences and communal circumstances. It is therefore, sound judgement to use a qualitative research method to collect data using a semi-structured interview guide. The researcher utilised deliberate sampling using purposive sampling. The recruitment process targeted the corporate and the senior management levels. This study's objective was to investigate the elements involved in developing sustainable water infrastructure to fulfil consumers water demand and to identify strategies for using sustainable development techniques to address the water scarcity. The study findings reveal that the main issues with poor service delivery include service delivery issues, cost overruns, unsatisfactory performance, improper use of funds and project completion delays. , Thesis (Ma) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
Affirmative action and people with disabilities in the work place
- Authors: Mpambani, Ntombizodwa Rose
- Date: 2023-04
- Subjects: Affirmative action programs -- Law and legislation , People with disabilities , Work environment
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60685 , vital:66321
- Description: Worldwide and in South Africa, affirmative action has been extensively used both as a policy instrument and a means of social reparation and reform. This study focuses on compliance and monitoring for affirmative action for persons with disabilities in the South African workplace. Affirmative action is a transitory method of advancing equality. Constitutionally, it is acknowledged in South Africa that affirmative action in the form of substantive equality. This study explores whether or not employers utilize affirmative action in accordance with the Employment Equity Act. It also aims to evaluate how the Department of Employment and Labour and the courts implement affirmative action. The study considers the relevant literature available, statutes, and employment equality policies, as well as an evaluation of case law. In South Africa, individuals who have disabilities are one of the groups that the Employment Equity Act attempts to protect. People with disabilities are disadvantaged in the work arena, which has substantial psychological, social, and economic consequences. The government established the numerical target that employers must strive to achieve in the workplace. Consequently, it is essential to investigate further the obstacles that impede the employment of persons with disabilities including the physical accessibility of the environment and information, transportation, the attitudes of others (such as employers and co-employees), and the extra expenditures associated with managing a disability. The delivery, nature, and structure of an individual's education is one of the first determinants of socialization into society. There is a delicate relationship between poverty, disability, and social assistance programs that may have a substantial effect on the employment and job search of persons with disabilities. Interestingly, South Africa combines significant unemployment rates with effective social assistance programs. There are compelling economic, social, psychological, and political arguments for boosting the employment of those with disabilities. The policy of affirmative action is effective, but the study notes that the objectives have not yet been realized. The situation in South Africa is compounded by a variety of confusing circumstances, including substantial unemployment, strong social assistance, and disabled individuals with poor skill levels. The survey concluded that the majority of firms do not execute affirmative action appropriately and that enforcement is minimal. It is recommended that disabled workers and labour unions confront employers that do not comply with the Employment Equity Act. To guarantee that persons with disabilities are completely integrated into the workforce, proactive and constructive strategies must be used. It is the morally just and virtuous thing to do, not just for disabled people but for all people. , Thesis (LLM) -- Faculty of Law, School of School: Mercantile Law, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Mpambani, Ntombizodwa Rose
- Date: 2023-04
- Subjects: Affirmative action programs -- Law and legislation , People with disabilities , Work environment
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60685 , vital:66321
- Description: Worldwide and in South Africa, affirmative action has been extensively used both as a policy instrument and a means of social reparation and reform. This study focuses on compliance and monitoring for affirmative action for persons with disabilities in the South African workplace. Affirmative action is a transitory method of advancing equality. Constitutionally, it is acknowledged in South Africa that affirmative action in the form of substantive equality. This study explores whether or not employers utilize affirmative action in accordance with the Employment Equity Act. It also aims to evaluate how the Department of Employment and Labour and the courts implement affirmative action. The study considers the relevant literature available, statutes, and employment equality policies, as well as an evaluation of case law. In South Africa, individuals who have disabilities are one of the groups that the Employment Equity Act attempts to protect. People with disabilities are disadvantaged in the work arena, which has substantial psychological, social, and economic consequences. The government established the numerical target that employers must strive to achieve in the workplace. Consequently, it is essential to investigate further the obstacles that impede the employment of persons with disabilities including the physical accessibility of the environment and information, transportation, the attitudes of others (such as employers and co-employees), and the extra expenditures associated with managing a disability. The delivery, nature, and structure of an individual's education is one of the first determinants of socialization into society. There is a delicate relationship between poverty, disability, and social assistance programs that may have a substantial effect on the employment and job search of persons with disabilities. Interestingly, South Africa combines significant unemployment rates with effective social assistance programs. There are compelling economic, social, psychological, and political arguments for boosting the employment of those with disabilities. The policy of affirmative action is effective, but the study notes that the objectives have not yet been realized. The situation in South Africa is compounded by a variety of confusing circumstances, including substantial unemployment, strong social assistance, and disabled individuals with poor skill levels. The survey concluded that the majority of firms do not execute affirmative action appropriately and that enforcement is minimal. It is recommended that disabled workers and labour unions confront employers that do not comply with the Employment Equity Act. To guarantee that persons with disabilities are completely integrated into the workforce, proactive and constructive strategies must be used. It is the morally just and virtuous thing to do, not just for disabled people but for all people. , Thesis (LLM) -- Faculty of Law, School of School: Mercantile Law, 2023
- Full Text:
- Date Issued: 2023-04
An Analysis of the Impact of Platinum mining strikes on the South African Economy and exchange rate volatility
- Authors: Malusi, Zintle
- Date: 2023-04
- Subjects: Platinum group Industry , South African economy
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61648 , vital:71822
- Description: The platinum group metals (PGM) mining sector is the largest component of the South African mining sector based on its contribution to GDP, employment and its overall contribution to the South African economy. Over the past decades South African production of PGMs has been declining, but post global financial crisis the country’s production growth has reduced due to the significant labour disruptions the industry has faced since late 2010. This paper aims to analyse the impact of these industrial strikes on the South African economy for the period 1 January 2008 to 31 December 2016 given the availability of data and significant strikes in that period. An examination of the impact strikes has had on the South African economy by running regressions using the generalized autoregressive conditional heteroskedasticity (GARCH) technique. The study also looked at economic variables such as exchange rate, interest rate and the platinum index to determine the effect on the platinum mining sector. Regression equations are tested to prove the effects strikes have on theses variables and the economy at large , Thesis (MA) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Malusi, Zintle
- Date: 2023-04
- Subjects: Platinum group Industry , South African economy
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61648 , vital:71822
- Description: The platinum group metals (PGM) mining sector is the largest component of the South African mining sector based on its contribution to GDP, employment and its overall contribution to the South African economy. Over the past decades South African production of PGMs has been declining, but post global financial crisis the country’s production growth has reduced due to the significant labour disruptions the industry has faced since late 2010. This paper aims to analyse the impact of these industrial strikes on the South African economy for the period 1 January 2008 to 31 December 2016 given the availability of data and significant strikes in that period. An examination of the impact strikes has had on the South African economy by running regressions using the generalized autoregressive conditional heteroskedasticity (GARCH) technique. The study also looked at economic variables such as exchange rate, interest rate and the platinum index to determine the effect on the platinum mining sector. Regression equations are tested to prove the effects strikes have on theses variables and the economy at large , Thesis (MA) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
An appraisal of RDP housing quality in sustaining the needs of the inhabitants: a case of Mount Ayliff, Chithwa Village in Umzimvubu Local Municipality
- Authors: Mbuzane, Mandlakazi Berlina
- Date: 2023-04
- Subjects: Housing , Sustainable architecture , Public housing--Resident satisfaction in Mount Ayliff, Umzimvubu Local Municipality (Eastern Cape)
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/66323 , vital:74554
- Description: When the South African democratic government gained power in 1994, its focus was on improving the lives of all the citizens, especially the ones who were the victims of apartheid laws. Providing adequate housing and proper access to government goods and services to poor citizens were perceived as an excellent initiative to better the quality of life of the previously disadvantaged people. This initiative gave birth to essential programmes such as the Reconstruction and Development Programme (RDP). The South African government embarked on an RDP housing programme to address the imbalances of apartheid spatial planning and unequal access to government goods and services. However, many studies have criticised this housing programme, stating that the government prioritised quantity over quality when constructing the subsidy houses. The purpose of the study was to appraise the quality of the RDP housing programme in sustaining the needs of the inhabitants in Mount Ayliff, Chithwa village, in Umzimvubu Local Municipality. The study employed a qualitative research method and used an interview guide to collect data from ten study participants. The findings show that the RDP housing programme has assisted many individuals in the community of Chithwa village in Mount Ayliff to get out of shacks and own proper houses. However, due to the cheap materials used and poor workmanship, the RDP houses in Mount Ayliff, Chithwa village are defective. Corruption and inconsistencies in the municipality's allocation of RDP houses have left people furious and disappointed in the RDP housing programme, as they believe their municipality is cheating them out of RDP houses. The RDP beneficiaries of Chithwa village in Mount Ayliff do not have title deeds even though they have occupied their houses for more than two decades. Lastly, the RDP beneficiaries had huge expectations about their RDP houses. However, they were disappointed when the houses they received did not meet their expectations. The study concludes by suggesting the actions the Department of Human Settlements and Umzimvubu Local Municipality could take in resolving challenges relating to the quality of RDP houses in Mount Ayliff, Chithwa village. , Thesis (MSc) -- Faculty of Engineering, the Built Environment and Technology, School of Built Environment/Construction Management, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Mbuzane, Mandlakazi Berlina
- Date: 2023-04
- Subjects: Housing , Sustainable architecture , Public housing--Resident satisfaction in Mount Ayliff, Umzimvubu Local Municipality (Eastern Cape)
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/66323 , vital:74554
- Description: When the South African democratic government gained power in 1994, its focus was on improving the lives of all the citizens, especially the ones who were the victims of apartheid laws. Providing adequate housing and proper access to government goods and services to poor citizens were perceived as an excellent initiative to better the quality of life of the previously disadvantaged people. This initiative gave birth to essential programmes such as the Reconstruction and Development Programme (RDP). The South African government embarked on an RDP housing programme to address the imbalances of apartheid spatial planning and unequal access to government goods and services. However, many studies have criticised this housing programme, stating that the government prioritised quantity over quality when constructing the subsidy houses. The purpose of the study was to appraise the quality of the RDP housing programme in sustaining the needs of the inhabitants in Mount Ayliff, Chithwa village, in Umzimvubu Local Municipality. The study employed a qualitative research method and used an interview guide to collect data from ten study participants. The findings show that the RDP housing programme has assisted many individuals in the community of Chithwa village in Mount Ayliff to get out of shacks and own proper houses. However, due to the cheap materials used and poor workmanship, the RDP houses in Mount Ayliff, Chithwa village are defective. Corruption and inconsistencies in the municipality's allocation of RDP houses have left people furious and disappointed in the RDP housing programme, as they believe their municipality is cheating them out of RDP houses. The RDP beneficiaries of Chithwa village in Mount Ayliff do not have title deeds even though they have occupied their houses for more than two decades. Lastly, the RDP beneficiaries had huge expectations about their RDP houses. However, they were disappointed when the houses they received did not meet their expectations. The study concludes by suggesting the actions the Department of Human Settlements and Umzimvubu Local Municipality could take in resolving challenges relating to the quality of RDP houses in Mount Ayliff, Chithwa village. , Thesis (MSc) -- Faculty of Engineering, the Built Environment and Technology, School of Built Environment/Construction Management, 2023
- Full Text:
- Date Issued: 2023-04
An assessment of return to work strategies within the South African financial services industry
- Authors: Ryan, Justin
- Date: 2023-04
- Subjects: COVID-19 pandemic , work environment
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/62392 , vital:72646
- Description: The purpose of this study was to conduct research into the return to work strategies that were used in the South African Financial Services Industry following the COVID-19 pandemic lockdown. The goal was to understand the motivation for the slow return to the office and to explore what strategies organisational leadership could employ to overcome this resistance. The South African Financial Services Industry represents multiple subsectors that are highly regulated in an age where the digital transformation of industries is common, as are the complexities and risks in integration. The significance of the study is to ascertain the appropriate strategies to encourage employees the return to the office since COVID-19. This study used a quantitative approach. This was achieved in the form of a survey sent to a sample of managers in South African Financial Services Industry using an electronic survey instrument created in Google Forms. One hundred and nineteen financial services managers fitting the criteria responded to the survey. The sampling methodology was both convenient and snowball sampling, non-probability techniques. The findings indicated that there is a relationship between extrinsic benefits received by employees and the return to work. The findings from the study also revealed that a hybrid working arrangement is preferred by the South African Financial Services Industry managers compared to working from home permanently From the study it is recommended that financial services organisations employ a hybrid working model where possible. Another recommendation is that leaders have a clear and transparent communication strategy of transforming the working environment to suit the changes brought about by the COVID-19 pandemic. , Thesis (Ma) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Ryan, Justin
- Date: 2023-04
- Subjects: COVID-19 pandemic , work environment
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/62392 , vital:72646
- Description: The purpose of this study was to conduct research into the return to work strategies that were used in the South African Financial Services Industry following the COVID-19 pandemic lockdown. The goal was to understand the motivation for the slow return to the office and to explore what strategies organisational leadership could employ to overcome this resistance. The South African Financial Services Industry represents multiple subsectors that are highly regulated in an age where the digital transformation of industries is common, as are the complexities and risks in integration. The significance of the study is to ascertain the appropriate strategies to encourage employees the return to the office since COVID-19. This study used a quantitative approach. This was achieved in the form of a survey sent to a sample of managers in South African Financial Services Industry using an electronic survey instrument created in Google Forms. One hundred and nineteen financial services managers fitting the criteria responded to the survey. The sampling methodology was both convenient and snowball sampling, non-probability techniques. The findings indicated that there is a relationship between extrinsic benefits received by employees and the return to work. The findings from the study also revealed that a hybrid working arrangement is preferred by the South African Financial Services Industry managers compared to working from home permanently From the study it is recommended that financial services organisations employ a hybrid working model where possible. Another recommendation is that leaders have a clear and transparent communication strategy of transforming the working environment to suit the changes brought about by the COVID-19 pandemic. , Thesis (Ma) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
An assessment of the effectiveness of waste management in the Nelson Mandela municipality
- Authors: Nyati, Tembakazi
- Date: 2023-04
- Subjects: waste management , Refuse disposal industry
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/62310 , vital:72379
- Description: Waste management is an essential service that municipalities provide to residents. The preservation of public health and the continued safety and well-being of both people and the environment, are both supported by good waste management methods. It has become necessary to evaluate present waste management strategies to ensure that they are still effective, due to the rise in solid waste brought on by the growth and development of communities. The primary objective of this study is to assess the effectiveness of waste management in the Nelson Mandela Bay Municipality. The study was conducted using a qualitative phenomenological approach. A total of 10 participants were chosen for the study and in-depth interviews were used as data collection tool to accomplish the objectives of the study. The qualitative data analysis tool Atlas TI was employed for data analysis to present emerging themes from the collected data. The findings of the study established that a lack of adequate resources presented a challenge to the municipality to provide effective waste management. The role of education and awareness was revealed to play a major role in ensuring that the public is well-informed about waste management. The study recommended that current waste management strategies be reviewed, and new policies be implemented. Finally, constant communication between residents and the municipality is needed to combat issues in neighbourhoods. The recommendations proposed in this study could be used as a possible guide to assist policy makers when reviewing and developing waste strategies. The evaluation of policies is key to addressing challenges regarding waste management. , Thesis (Ma) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Nyati, Tembakazi
- Date: 2023-04
- Subjects: waste management , Refuse disposal industry
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/62310 , vital:72379
- Description: Waste management is an essential service that municipalities provide to residents. The preservation of public health and the continued safety and well-being of both people and the environment, are both supported by good waste management methods. It has become necessary to evaluate present waste management strategies to ensure that they are still effective, due to the rise in solid waste brought on by the growth and development of communities. The primary objective of this study is to assess the effectiveness of waste management in the Nelson Mandela Bay Municipality. The study was conducted using a qualitative phenomenological approach. A total of 10 participants were chosen for the study and in-depth interviews were used as data collection tool to accomplish the objectives of the study. The qualitative data analysis tool Atlas TI was employed for data analysis to present emerging themes from the collected data. The findings of the study established that a lack of adequate resources presented a challenge to the municipality to provide effective waste management. The role of education and awareness was revealed to play a major role in ensuring that the public is well-informed about waste management. The study recommended that current waste management strategies be reviewed, and new policies be implemented. Finally, constant communication between residents and the municipality is needed to combat issues in neighbourhoods. The recommendations proposed in this study could be used as a possible guide to assist policy makers when reviewing and developing waste strategies. The evaluation of policies is key to addressing challenges regarding waste management. , Thesis (Ma) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
An efficient approach for the synthesis of dolutegravir and its analogue exploiting flow chemistry
- Authors: Nqeketo, Sinazo
- Date: 2023-04
- Subjects: HIV (Viruses) – Enzymes –Inhibitors , Antiviral agents -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/${Handle} , vital:70635
- Description: Africa has the highest Human Immunodeficiency Virus (HIV) prevalence in the world and has invested heavily in running its HIV programmes and conducting research of medical significance. Despite efforts in combating this disease the production, distribution, cost, and availability of antiretroviral (ARV) generics remains a major problem as they are imported from China and India. Exploring the recently emerged “enabling technique”, namely flow chemistry in the production of APIs has gained a lot of attention. This study was devoted on exploring the application of flow chemistry on the synthesis of a newly approved anti-HIV drug dolutegravir (DTG); an integrase inhibitor with a high genetic barrier to resistance with a daily dosing scheduled compared to other ARVs and its third-generation inhibitor analogue, cabotegravir. Chapter one covers a comprehensive background and literature review of the HIV epidemic, an introduction of antiretroviral therapy as well as detailed dolutegravir and cabotegravir synthesis. A brief introduction of continuous flow technology with its advantages and disadvantages is discussed in this chapter. The efficient seven-step continuous flow procedure afforded dolutegravir and cabotegravir in improved reaction times and yields compared to the traditional batch procedure was demonstrated. The significant advantage of this flow process includes the reduction of the overall reaction time from step one to step seven, from prolonged 68 hours in batch to 34 minutes. The overall yield of each reaction step improved dramatically upon flow optimization. The yields of the second step (selective ester hydrolysis), fourth step (cyclization) and fifth step (amidation) increased from 64 %, 40 % and 33 % in batch to 98 %, 71 % and 100 % yield by HPLC respectively. Other than improved yields and residence times which was aided advantages of microreactor technology including intensive mixing, the flow process is also much better because it is cost effective. Most importantly, a novel process on the formation of pyridinone intermediate using ion-exchange resin catalysts towards the synthesis of dolutegravir and cabotegravir was described in this study , Thesis (PhD) -- Faculty of Science, School of Biomolecular and Chemical Science, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Nqeketo, Sinazo
- Date: 2023-04
- Subjects: HIV (Viruses) – Enzymes –Inhibitors , Antiviral agents -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/${Handle} , vital:70635
- Description: Africa has the highest Human Immunodeficiency Virus (HIV) prevalence in the world and has invested heavily in running its HIV programmes and conducting research of medical significance. Despite efforts in combating this disease the production, distribution, cost, and availability of antiretroviral (ARV) generics remains a major problem as they are imported from China and India. Exploring the recently emerged “enabling technique”, namely flow chemistry in the production of APIs has gained a lot of attention. This study was devoted on exploring the application of flow chemistry on the synthesis of a newly approved anti-HIV drug dolutegravir (DTG); an integrase inhibitor with a high genetic barrier to resistance with a daily dosing scheduled compared to other ARVs and its third-generation inhibitor analogue, cabotegravir. Chapter one covers a comprehensive background and literature review of the HIV epidemic, an introduction of antiretroviral therapy as well as detailed dolutegravir and cabotegravir synthesis. A brief introduction of continuous flow technology with its advantages and disadvantages is discussed in this chapter. The efficient seven-step continuous flow procedure afforded dolutegravir and cabotegravir in improved reaction times and yields compared to the traditional batch procedure was demonstrated. The significant advantage of this flow process includes the reduction of the overall reaction time from step one to step seven, from prolonged 68 hours in batch to 34 minutes. The overall yield of each reaction step improved dramatically upon flow optimization. The yields of the second step (selective ester hydrolysis), fourth step (cyclization) and fifth step (amidation) increased from 64 %, 40 % and 33 % in batch to 98 %, 71 % and 100 % yield by HPLC respectively. Other than improved yields and residence times which was aided advantages of microreactor technology including intensive mixing, the flow process is also much better because it is cost effective. Most importantly, a novel process on the formation of pyridinone intermediate using ion-exchange resin catalysts towards the synthesis of dolutegravir and cabotegravir was described in this study , Thesis (PhD) -- Faculty of Science, School of Biomolecular and Chemical Science, 2023
- Full Text:
- Date Issued: 2023-04
An evaluation of the effectiveness of area-based conservation intervention in avoiding biodiversity loss in South Africa
- Authors: Van Straten, Maurice Oswald
- Date: 2023-04
- Subjects: Soil conservation -- South Africa , Livestock farms – South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61132 , vital:69765
- Description: Habitat degradation, livestock farming, crop cultivation, rangeland overutilization and veld mismanagement are among the factors causing biodiversity loss worldwide. Rangelands in arid and semi-arid environments are no exception, as they are under stress from conversion into cropland and pressure from livestock farming. In these arid areas, rainfall is unpredictable and plant recruitment levels low, resulting in veld rehabilitation being a potentially expensive and time-consuming undertaking for landowners. Landowners implement different rehabilitation methods to increase overall vegetation cover and prevent further soil and vegetation degradation. These rehabilitation methods may include the creation of micro-catchments, mulching, brushpacking, ripping, geotextiles, stone cobbling and erosion control fences, individually or in combination with the addition of reseeding, replanting, and use of manure or fertilizer to supplement land rehabilitation. This study investigated the significance of three rehabilitation methods (hollows, brush packing and a combination of these two methods) on water infiltration rates, soil moisture content, and vegetation canopy cover with associated growth form canopy cover over a period of 17 months (March 2021 to August 2022). This study showed that rehabilitation methods implemented had no significant impact on water infiltration rates and vegetation canopy cover. However, rehabilitation methods had a significant impact on soil moisture content. The use of a hollows is recommended when attempting to increase the soil moisture content percentage when performing rehabilitation. Overall vegetation canopy cover is influenced more by seasonal changes than by the rehabilitation methods implemented. This study indicated that the creation of micro-catchments is an effective rehabilitation method to use in an arid area, as it promotes vegetation establishment and growth. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Science and Management , 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Van Straten, Maurice Oswald
- Date: 2023-04
- Subjects: Soil conservation -- South Africa , Livestock farms – South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61132 , vital:69765
- Description: Habitat degradation, livestock farming, crop cultivation, rangeland overutilization and veld mismanagement are among the factors causing biodiversity loss worldwide. Rangelands in arid and semi-arid environments are no exception, as they are under stress from conversion into cropland and pressure from livestock farming. In these arid areas, rainfall is unpredictable and plant recruitment levels low, resulting in veld rehabilitation being a potentially expensive and time-consuming undertaking for landowners. Landowners implement different rehabilitation methods to increase overall vegetation cover and prevent further soil and vegetation degradation. These rehabilitation methods may include the creation of micro-catchments, mulching, brushpacking, ripping, geotextiles, stone cobbling and erosion control fences, individually or in combination with the addition of reseeding, replanting, and use of manure or fertilizer to supplement land rehabilitation. This study investigated the significance of three rehabilitation methods (hollows, brush packing and a combination of these two methods) on water infiltration rates, soil moisture content, and vegetation canopy cover with associated growth form canopy cover over a period of 17 months (March 2021 to August 2022). This study showed that rehabilitation methods implemented had no significant impact on water infiltration rates and vegetation canopy cover. However, rehabilitation methods had a significant impact on soil moisture content. The use of a hollows is recommended when attempting to increase the soil moisture content percentage when performing rehabilitation. Overall vegetation canopy cover is influenced more by seasonal changes than by the rehabilitation methods implemented. This study indicated that the creation of micro-catchments is an effective rehabilitation method to use in an arid area, as it promotes vegetation establishment and growth. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Science and Management , 2023
- Full Text:
- Date Issued: 2023-04
An evaluation of the effectiveness of area-based conservation interventions in avoiding biodiversity loss in South Africa
- Authors: Von Staden, Lize
- Date: 2023-04
- Subjects: Environmental policy , Conservation of natural resources -- Government policy -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/61115 , vital:69762
- Description: Counterfactual impact evaluation studies form an important evidence base for the effectiveness of conservation projects, programs, and policies (collectively referred to as conservation interventions). In South Africa, counterfactual impact evaluation methods have rarely been applied to local conservation interventions, and therefore evidence for the effectiveness of key strategic national conservation approaches is lacking. This study evaluated three area-based interventions that together aim to avoid the loss of areas most important for the persistence of biodiversity in the terrestrial realm as evidence towards the effectiveness of South Africa’s landscape approach to biodiversity conservation. The first intervention, South Africa’s National Protected Area Expansion Strategy (NPAES), set ambitious targets to double the extent of South Africa’s protected area network while ensuring that the expansion preferentially occurs in areas of under-represented biodiversity. The strategy was evaluated in terms of its effectiveness in guiding protected area expansion towards more equitable representation of South Africa’s biodiversity through an assessment of changes in indicators of protected area expansion decision-making before and after the implementation of the strategy. The second intervention is the use of maps of biodiversity priorities to guide land use change decisions outside protected areas. Impact was evaluated as avoided loss of Critical Biodiversity Areas (CBAs), which need to remain in a natural condition to meet in situ conservation targets for species, ecosystems, and ecological processes. Avoided loss in CBAs was benchmarked against avoided loss in protected areas, to contextualize the effectiveness of land use planning as a conservation intervention. Lastly, the effectiveness of stricter land use regulations for threatened ecosystems to reduce land conversion pressure on these ecosystems was evaluated. Key findings were that protected areas are highly effective conservation interventions where they can be implemented, but their capacity for conservation impact is limited by severe constraints on strategic expansion. , Thesis (PhD) -- Faculty of Science, School of Environmental Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Von Staden, Lize
- Date: 2023-04
- Subjects: Environmental policy , Conservation of natural resources -- Government policy -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/61115 , vital:69762
- Description: Counterfactual impact evaluation studies form an important evidence base for the effectiveness of conservation projects, programs, and policies (collectively referred to as conservation interventions). In South Africa, counterfactual impact evaluation methods have rarely been applied to local conservation interventions, and therefore evidence for the effectiveness of key strategic national conservation approaches is lacking. This study evaluated three area-based interventions that together aim to avoid the loss of areas most important for the persistence of biodiversity in the terrestrial realm as evidence towards the effectiveness of South Africa’s landscape approach to biodiversity conservation. The first intervention, South Africa’s National Protected Area Expansion Strategy (NPAES), set ambitious targets to double the extent of South Africa’s protected area network while ensuring that the expansion preferentially occurs in areas of under-represented biodiversity. The strategy was evaluated in terms of its effectiveness in guiding protected area expansion towards more equitable representation of South Africa’s biodiversity through an assessment of changes in indicators of protected area expansion decision-making before and after the implementation of the strategy. The second intervention is the use of maps of biodiversity priorities to guide land use change decisions outside protected areas. Impact was evaluated as avoided loss of Critical Biodiversity Areas (CBAs), which need to remain in a natural condition to meet in situ conservation targets for species, ecosystems, and ecological processes. Avoided loss in CBAs was benchmarked against avoided loss in protected areas, to contextualize the effectiveness of land use planning as a conservation intervention. Lastly, the effectiveness of stricter land use regulations for threatened ecosystems to reduce land conversion pressure on these ecosystems was evaluated. Key findings were that protected areas are highly effective conservation interventions where they can be implemented, but their capacity for conservation impact is limited by severe constraints on strategic expansion. , Thesis (PhD) -- Faculty of Science, School of Environmental Sciences, 2023
- Full Text:
- Date Issued: 2023-04
An evaluation of the legislative framework for public infrastructure investment to reduce unemployment in South Africa
- Authors: Daniel, Nwabisa Nandipha
- Date: 2023-04
- Subjects: Unemployment--South Africa , unemployment Statistics
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61086 , vital:69739
- Description: This study evaluated South Africa’s legislative framework for public infrastructure investment to determine its effectiveness in reducing unemployment. The study is primarily driven by South Africa’s persistent challenge of unemployment with Statistics South Africa estimating the unemployment rate at 35.5 per cent or 7.9 million labourers. Persistently high levels of unemployment harm the socio-economy as unemployment increases poverty and contributes to inequality. For the government an increase in expenditure on social relief programmes, while offering some relief, decreases revenue collection. In order to mitigate this imbalance, the South African government identified public infrastructure investment as a stimulus for economic growth and create employment, such as in the Expanded Public Works Programme initiative. The legislative framework is an important aspect of study as policy is legitimised and implemented through the legislative framework. Previous studies have focused on the effect of fiscal policy on economic growth and employment creation. These studies have also used quantitative data analysis to explain the relationship between fiscal policy, economic growth, and unemployment. Other studies have focused on public policy planning and implementation, and some of the policies that have been implemented to address unemployment. This study focused on public infrastructure investments specifically rather than fiscal policy in general. The study also examined the legislative framework to determine whether it is effective in reducing unemployment through public infrastructure investment. The study made used qualitative data analysis as the researcher undertook a document analysis of publicly available documents which were sampled using a purposive sampling technique and analysed using the thematic analysis method. The findings of the study were that the legislative framework supported employment creation through public infrastructure investment through the establishment of a public institution to support the construction industry, the use of local content as inputs and labour-intensive technologies in the infrastructure delivery process. The legislative framework was not effective in supporting the policy, which is demonstrated by the perpetually high unemployment rate despite unemployment alleviating initiatives being implemented in the early and mid-2000s , Thesis (MSc) -- Faculty of business and economic sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Daniel, Nwabisa Nandipha
- Date: 2023-04
- Subjects: Unemployment--South Africa , unemployment Statistics
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61086 , vital:69739
- Description: This study evaluated South Africa’s legislative framework for public infrastructure investment to determine its effectiveness in reducing unemployment. The study is primarily driven by South Africa’s persistent challenge of unemployment with Statistics South Africa estimating the unemployment rate at 35.5 per cent or 7.9 million labourers. Persistently high levels of unemployment harm the socio-economy as unemployment increases poverty and contributes to inequality. For the government an increase in expenditure on social relief programmes, while offering some relief, decreases revenue collection. In order to mitigate this imbalance, the South African government identified public infrastructure investment as a stimulus for economic growth and create employment, such as in the Expanded Public Works Programme initiative. The legislative framework is an important aspect of study as policy is legitimised and implemented through the legislative framework. Previous studies have focused on the effect of fiscal policy on economic growth and employment creation. These studies have also used quantitative data analysis to explain the relationship between fiscal policy, economic growth, and unemployment. Other studies have focused on public policy planning and implementation, and some of the policies that have been implemented to address unemployment. This study focused on public infrastructure investments specifically rather than fiscal policy in general. The study also examined the legislative framework to determine whether it is effective in reducing unemployment through public infrastructure investment. The study made used qualitative data analysis as the researcher undertook a document analysis of publicly available documents which were sampled using a purposive sampling technique and analysed using the thematic analysis method. The findings of the study were that the legislative framework supported employment creation through public infrastructure investment through the establishment of a public institution to support the construction industry, the use of local content as inputs and labour-intensive technologies in the infrastructure delivery process. The legislative framework was not effective in supporting the policy, which is demonstrated by the perpetually high unemployment rate despite unemployment alleviating initiatives being implemented in the early and mid-2000s , Thesis (MSc) -- Faculty of business and economic sciences, 2023
- Full Text:
- Date Issued: 2023-04
An evaluation of the national minimum wage dispensation
- Authors: Masenya, Mogodi
- Date: 2023-04
- Subjects: Evaluation , Minimum wage -- distribution , South Africa
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60807 , vital:67833
- Description: After South Africa became a democratic country, there was a shift in the labour and employment sector. This led to introduction of new labour laws which would be in harmony with the constitutional dream and objectives. As such, the BCEA was introduced to bring about change to the basic conditions of employment. As a result of this, new minimum wages policies and laws were enacted. The wages were to be determined by the following means: first way was by means of bargaining council agreements, the second way by means of statutory council agreements, and the third way by means of sectoral determinations. The sectoral determinations policy was introduced through the BCEA. The BCEA through the ECC promulgated sectoral determinations which was aimed to establish minimum wages and conditions of employment for workers in the sectors deemed to be vulnerable. A minimum wage was firstly adopted in New Zealand and in European countries as early as the 19th century. This policy was then widely adopted after the establishment of the International Labour Organisation. The purpose or aim of a minimum wage is to protect workers against exploitatively low pay and to ensure a just and equitable share of the profits of work, thus creating a minimum living wage for all those that are employed and in need of such protection. Minimum wages are also often used as a policy tool to reduce poverty and inequality, including between men and women, by advocating for equal pay for work of equal value. Convention No. 131 and Recommendation No 135 are the key international conventions that determine minimum wage fixing. Convention No. 131 and Recommendation No. 135 seek to ensure that the minimum wage is set at a certain level that allows workers and their families to meet their needs. Article 4 of Convention No. 131 requires the creation and maintenance of machinery adapted to national conditions and requirements whereby minimum wages for groups of wage earners covered under article 1 can be fixed and adjusted from time to time. However, the situation of minimum wages differs between developed and developing countries. This raises a concern, more particularly, whether developing countries can be able to adopt the minimum wage policy. This research makes investigate the adoption of iv minimum wage policy in developed and developing countries, and how it affected their socio-economic status. On about 2018, South Africa enacted the National Minimum Wage Act. This Act was aimed at establishing a floor of minimum wage for all employees. This Act was intended to promote and protect vulnerable workers who were left out from the previous wage policies. The long-term aim of a minimum wage was to remove the problem of poverty pay, which exists when the earnings from paid work do not result in a living minimum wage and fail to push people out of poverty. When this Act was enacted, the national minimum wage floor was set at R20 per hour. However, in EPWP, Domestic Worker, and Farm workers had lower rates because they were regulated by other laws. Furthermore, there were challenges of non-compliance by employers. The national minimum wage policy as a socio-economic tool has had an impact on several levels of the economy. This policy has contributed to either alleviation or elevation of poverty and unemployment. Therefore, this study looks at the impact the minimum wage has had on these 2 aspects of life. The research provides a specific asymmetric data of the impact of the policy in all sectors throughout the time since this policy was adopted. It further shows how the minimum wage policy intervention has been affected by covid 19 pandemic. This empirical evidence is provided by way of charts and graphs to demonstrate the changes that has occurred. At the end of the treatise a conclusion on how this policy has affected the South African economy is reached. Furthermore, recommendations on how economic risks posed by the minimum wage policy can be reduced. , Thesis (LLM) -- Faculty of Law, School of Mercantile law, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Masenya, Mogodi
- Date: 2023-04
- Subjects: Evaluation , Minimum wage -- distribution , South Africa
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60807 , vital:67833
- Description: After South Africa became a democratic country, there was a shift in the labour and employment sector. This led to introduction of new labour laws which would be in harmony with the constitutional dream and objectives. As such, the BCEA was introduced to bring about change to the basic conditions of employment. As a result of this, new minimum wages policies and laws were enacted. The wages were to be determined by the following means: first way was by means of bargaining council agreements, the second way by means of statutory council agreements, and the third way by means of sectoral determinations. The sectoral determinations policy was introduced through the BCEA. The BCEA through the ECC promulgated sectoral determinations which was aimed to establish minimum wages and conditions of employment for workers in the sectors deemed to be vulnerable. A minimum wage was firstly adopted in New Zealand and in European countries as early as the 19th century. This policy was then widely adopted after the establishment of the International Labour Organisation. The purpose or aim of a minimum wage is to protect workers against exploitatively low pay and to ensure a just and equitable share of the profits of work, thus creating a minimum living wage for all those that are employed and in need of such protection. Minimum wages are also often used as a policy tool to reduce poverty and inequality, including between men and women, by advocating for equal pay for work of equal value. Convention No. 131 and Recommendation No 135 are the key international conventions that determine minimum wage fixing. Convention No. 131 and Recommendation No. 135 seek to ensure that the minimum wage is set at a certain level that allows workers and their families to meet their needs. Article 4 of Convention No. 131 requires the creation and maintenance of machinery adapted to national conditions and requirements whereby minimum wages for groups of wage earners covered under article 1 can be fixed and adjusted from time to time. However, the situation of minimum wages differs between developed and developing countries. This raises a concern, more particularly, whether developing countries can be able to adopt the minimum wage policy. This research makes investigate the adoption of iv minimum wage policy in developed and developing countries, and how it affected their socio-economic status. On about 2018, South Africa enacted the National Minimum Wage Act. This Act was aimed at establishing a floor of minimum wage for all employees. This Act was intended to promote and protect vulnerable workers who were left out from the previous wage policies. The long-term aim of a minimum wage was to remove the problem of poverty pay, which exists when the earnings from paid work do not result in a living minimum wage and fail to push people out of poverty. When this Act was enacted, the national minimum wage floor was set at R20 per hour. However, in EPWP, Domestic Worker, and Farm workers had lower rates because they were regulated by other laws. Furthermore, there were challenges of non-compliance by employers. The national minimum wage policy as a socio-economic tool has had an impact on several levels of the economy. This policy has contributed to either alleviation or elevation of poverty and unemployment. Therefore, this study looks at the impact the minimum wage has had on these 2 aspects of life. The research provides a specific asymmetric data of the impact of the policy in all sectors throughout the time since this policy was adopted. It further shows how the minimum wage policy intervention has been affected by covid 19 pandemic. This empirical evidence is provided by way of charts and graphs to demonstrate the changes that has occurred. At the end of the treatise a conclusion on how this policy has affected the South African economy is reached. Furthermore, recommendations on how economic risks posed by the minimum wage policy can be reduced. , Thesis (LLM) -- Faculty of Law, School of Mercantile law, 2023
- Full Text:
- Date Issued: 2023-04
An exploration of the Participatory Guarantee System (PGS) facilitating the growth and certification of small-scale organic farmers: Giyani, Garden Route and Overberg case studies
- Authors: Mashele,N’wa-Jama
- Date: 2023-04
- Subjects: Organic farming – Case studies --South Africa , Organic farming research
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60741 , vital:66574
- Description: In this study, I evaluated the Participatory Guarantee System (PGS) as a framework to support the growth and certification of small-scale organic farmers. I used the interpretivism and constructivism lenses to understand the PGS from the perspective of members of three PGS groups. The research was qualitative, treating the three PGS groups as case studies. I collected data using focus groups, semi-structured interviews, questionnaires, field notes and observations. The theoretical frameworks that guided the research and data analysis were Socio-ecological Systems (SES) based principles and the Multi-Level-Perspective (MLP) framework. The data were analysed using Atlas.ti content analysis software. The key results were grouped into four themes: capacity; market and logistics; learning process; and disturbance, shock and stress. The theme of ‘capacity’ dealt with the functioning of a PGS, where three categories were identified: group composition and capacity; resource limitations and institutional support; marketing and consumer education. The more diversity in age, education and culture of PGS stakeholders, the better performance and chances of continuity and propagation. PGS has limited capacity partly due to its voluntary nature and infancy. It needs institutional support to grow and be useful for members. Department of Agriculture extension officers knew little about organic farming, thus limiting their engagement and assistance to such farmers. The theme of ‘market and logistics’ looked at the various factors that influence the farmers’ market reach. The perception from the members was that there was minimal consumer awareness about organic agriculture and the PGS. The marketing of organic produce relied largely on the individual farmer’s efforts and ability to search for and secure markets. The theme of the ‘learning process’ was categorised into learning and knowledge exchange. Members of the PGS groups highly regarded the invaluable knowledge shared through farm visits and online platforms, such as their WhatsApp groups. This knowledge improved and informed their farming techniques and led to the growth of v their skill base and experimentation. They viewed the way knowledge was exchanged as non-threatening and highly useful. The fourth theme of ‘disturbance, shock and stress’ dealt with the effects of COVID19. The three groups were all affected by lockdown restrictions (at the time of data collection) and were initially cut off from their usual markets. This led to a loss of income, loss of farm staff and a loss of the desired growth of the farms. The group’s diverse farming practices bolstered their resilience, enabling them to adapt and try alternative marketing strategies. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Mashele,N’wa-Jama
- Date: 2023-04
- Subjects: Organic farming – Case studies --South Africa , Organic farming research
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60741 , vital:66574
- Description: In this study, I evaluated the Participatory Guarantee System (PGS) as a framework to support the growth and certification of small-scale organic farmers. I used the interpretivism and constructivism lenses to understand the PGS from the perspective of members of three PGS groups. The research was qualitative, treating the three PGS groups as case studies. I collected data using focus groups, semi-structured interviews, questionnaires, field notes and observations. The theoretical frameworks that guided the research and data analysis were Socio-ecological Systems (SES) based principles and the Multi-Level-Perspective (MLP) framework. The data were analysed using Atlas.ti content analysis software. The key results were grouped into four themes: capacity; market and logistics; learning process; and disturbance, shock and stress. The theme of ‘capacity’ dealt with the functioning of a PGS, where three categories were identified: group composition and capacity; resource limitations and institutional support; marketing and consumer education. The more diversity in age, education and culture of PGS stakeholders, the better performance and chances of continuity and propagation. PGS has limited capacity partly due to its voluntary nature and infancy. It needs institutional support to grow and be useful for members. Department of Agriculture extension officers knew little about organic farming, thus limiting their engagement and assistance to such farmers. The theme of ‘market and logistics’ looked at the various factors that influence the farmers’ market reach. The perception from the members was that there was minimal consumer awareness about organic agriculture and the PGS. The marketing of organic produce relied largely on the individual farmer’s efforts and ability to search for and secure markets. The theme of the ‘learning process’ was categorised into learning and knowledge exchange. Members of the PGS groups highly regarded the invaluable knowledge shared through farm visits and online platforms, such as their WhatsApp groups. This knowledge improved and informed their farming techniques and led to the growth of v their skill base and experimentation. They viewed the way knowledge was exchanged as non-threatening and highly useful. The fourth theme of ‘disturbance, shock and stress’ dealt with the effects of COVID19. The three groups were all affected by lockdown restrictions (at the time of data collection) and were initially cut off from their usual markets. This led to a loss of income, loss of farm staff and a loss of the desired growth of the farms. The group’s diverse farming practices bolstered their resilience, enabling them to adapt and try alternative marketing strategies. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2023
- Full Text:
- Date Issued: 2023-04
An explorative study into the introduction of sugar tax in the sugar industry: A case of Illovo
- Authors: Jacobs, Nomfundo
- Date: 2023-04
- Subjects: Sugar Trade , Maple sugar industry
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61350 , vital:70421
- Description: An explorative study into the introduction of sugar tax in the sugar industry: A case of Illovo. The purpose of this study was to assess the impact of the sugar tax on the South African sugar industry, Illovo Sugar in particular. This tax was introduced in 2018 and it only affected the beverage industry, with its effects being concentrated on industrial sales. The government's intention was to reduce the rising levels of non-communicable diseases such as diabetes and heart diseases, in response to the increased sugar consumption in the country. In addition, the introduction of this tax was expected to reduce sugar consumption in the country, thereby improving public health. Ultimately, the government wanted to encourage citizens to adjust their lifestyles by reducing their sugar intake. To this end, the sugar tax was implemented with the expectation that it would lead to a decrease in sugar consumption in South Africa. The researcher made use of the qualitative research method to collect the data. This enabled a comprehensive understanding of the research topic, as the participants chosen had been working in the sugar industry for a number of years and could give detailed accounts of the implications of the tax on the industry and the communities. Furthermore, the researcher conducted in-depth interviews with the participants to better understand their perceptions on how the tax had impacted their businesses. The data collected was then analysed according to thematic content analysis, and this produced factual, reliable, and valid results. The findings of this study revealed that the sugar tax had a negative impact on Illovo's business operations. Despite this, Illovo was able to leverage its resources and expertise to devise strategies for mitigating the impact of the sugar tax, allowing them to remain competitive in their industry. This included focusing on independent stores and restructuring staff and resources to manage the lower sugar demand. Additionally, Illovo also looked at selling sugar to more profitable customers, helping to reduce costs and associated risk. Despite the strategies adopted, further research is recommended in order to gain a more comprehensive understanding into the phenomenon using a large sample size. This v would allow for further insights into the impact of the sugar tax on the South African sugar industry and whether any changes need to be made in order to ensure that it continues to remain competitive in the industry. Furthermore, research should also be conducted into the implications of the sugar tax on other sectors of the economy, as policy makers may need to consider the possible effects on other industries and even on the government itself versus the possible benefits to the public. Additionally, this research could also be extended to include a longitudinal study in order to capture any changes that take place in the years to come. These changes may include further price adjustments, changes in consumer behaviour, and any possible implications on public health. This would allow for a greater understanding of the implications of this tax for both the industry and society. , Thesis (MA) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Jacobs, Nomfundo
- Date: 2023-04
- Subjects: Sugar Trade , Maple sugar industry
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61350 , vital:70421
- Description: An explorative study into the introduction of sugar tax in the sugar industry: A case of Illovo. The purpose of this study was to assess the impact of the sugar tax on the South African sugar industry, Illovo Sugar in particular. This tax was introduced in 2018 and it only affected the beverage industry, with its effects being concentrated on industrial sales. The government's intention was to reduce the rising levels of non-communicable diseases such as diabetes and heart diseases, in response to the increased sugar consumption in the country. In addition, the introduction of this tax was expected to reduce sugar consumption in the country, thereby improving public health. Ultimately, the government wanted to encourage citizens to adjust their lifestyles by reducing their sugar intake. To this end, the sugar tax was implemented with the expectation that it would lead to a decrease in sugar consumption in South Africa. The researcher made use of the qualitative research method to collect the data. This enabled a comprehensive understanding of the research topic, as the participants chosen had been working in the sugar industry for a number of years and could give detailed accounts of the implications of the tax on the industry and the communities. Furthermore, the researcher conducted in-depth interviews with the participants to better understand their perceptions on how the tax had impacted their businesses. The data collected was then analysed according to thematic content analysis, and this produced factual, reliable, and valid results. The findings of this study revealed that the sugar tax had a negative impact on Illovo's business operations. Despite this, Illovo was able to leverage its resources and expertise to devise strategies for mitigating the impact of the sugar tax, allowing them to remain competitive in their industry. This included focusing on independent stores and restructuring staff and resources to manage the lower sugar demand. Additionally, Illovo also looked at selling sugar to more profitable customers, helping to reduce costs and associated risk. Despite the strategies adopted, further research is recommended in order to gain a more comprehensive understanding into the phenomenon using a large sample size. This v would allow for further insights into the impact of the sugar tax on the South African sugar industry and whether any changes need to be made in order to ensure that it continues to remain competitive in the industry. Furthermore, research should also be conducted into the implications of the sugar tax on other sectors of the economy, as policy makers may need to consider the possible effects on other industries and even on the government itself versus the possible benefits to the public. Additionally, this research could also be extended to include a longitudinal study in order to capture any changes that take place in the years to come. These changes may include further price adjustments, changes in consumer behaviour, and any possible implications on public health. This would allow for a greater understanding of the implications of this tax for both the industry and society. , Thesis (MA) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
An investigation into the cybersecurity skills gap in South Africa
- Authors: De Jager, Michael
- Date: 2023-04
- Subjects: Criminal investigation , Information technology--Security measures -- South Africa
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60635 , vital:66247
- Description: The usage of the internet both in our daily lives and in the operations of organisations has grown significantly in modern society. However, there are also risks and vulnerabilities associated with this, thus cyber threats. Cybersecurity has been put in place to safeguard the internet from these cyber threats, yet there is an ever-growing concern regarding the implementation of cybersecurity, both globally and in South Africa. With the increase in cyber threats, there is a growing need and demand for IT professionals with the requisite cybersecurity skills and knowledge to combat and mitigate these threats. However, an ever-increasing cybersecurity skills gap has been identified both globally and in South Africa. Yet the specific cybersecurity skills demand, needs and challenges of IT professionals in South Africa are currently unknown. This study therefore investigated the cybersecurity skills demand, needs, and challenges of IT professionals in South Africa by reporting on IT professionals’ perceptions in this regard. An online questionnaire was used to gather information for this and was distributed to IT professionals using various online platforms. According to the findings of the study, there are several challenges such as lack of time, lack of funding and a lack of resources that South Africa must overcome in order to address the cybersecurity skills gap. From the survey results it was also found that neither tertiary institutions, nor organisations, nor the South African government are investing enough in cybersecurity skills development. Without the right cybersecurity skills set or investment in the development of cybersecurity skills, cyber threats will continue to increase and will potentially become more harmful to South African organisations and to the South African society at large. Furthermore, this study addresses the extent to which cybersecurity-related skills are required and currently used by IT professionals in South Africa to address the cybersecurity skills gap. Tertiary institutions, organisations and the South African government may benefit from this investigation as it could assist in the development of cybersecurity course work as well as national cybersecurity laws, legislations and policies. , Thesis (MIT) -- Faculty of Engineering, the Built Environment and Technology, School of Information Technology, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: De Jager, Michael
- Date: 2023-04
- Subjects: Criminal investigation , Information technology--Security measures -- South Africa
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/60635 , vital:66247
- Description: The usage of the internet both in our daily lives and in the operations of organisations has grown significantly in modern society. However, there are also risks and vulnerabilities associated with this, thus cyber threats. Cybersecurity has been put in place to safeguard the internet from these cyber threats, yet there is an ever-growing concern regarding the implementation of cybersecurity, both globally and in South Africa. With the increase in cyber threats, there is a growing need and demand for IT professionals with the requisite cybersecurity skills and knowledge to combat and mitigate these threats. However, an ever-increasing cybersecurity skills gap has been identified both globally and in South Africa. Yet the specific cybersecurity skills demand, needs and challenges of IT professionals in South Africa are currently unknown. This study therefore investigated the cybersecurity skills demand, needs, and challenges of IT professionals in South Africa by reporting on IT professionals’ perceptions in this regard. An online questionnaire was used to gather information for this and was distributed to IT professionals using various online platforms. According to the findings of the study, there are several challenges such as lack of time, lack of funding and a lack of resources that South Africa must overcome in order to address the cybersecurity skills gap. From the survey results it was also found that neither tertiary institutions, nor organisations, nor the South African government are investing enough in cybersecurity skills development. Without the right cybersecurity skills set or investment in the development of cybersecurity skills, cyber threats will continue to increase and will potentially become more harmful to South African organisations and to the South African society at large. Furthermore, this study addresses the extent to which cybersecurity-related skills are required and currently used by IT professionals in South Africa to address the cybersecurity skills gap. Tertiary institutions, organisations and the South African government may benefit from this investigation as it could assist in the development of cybersecurity course work as well as national cybersecurity laws, legislations and policies. , Thesis (MIT) -- Faculty of Engineering, the Built Environment and Technology, School of Information Technology, 2023
- Full Text:
- Date Issued: 2023-04
An investigation of alternative separation strategies for common chemical mixtures by means of host-guest chemistry protocols with host compounds N,N′- bis(5-phenyl-5-dibenzo[a,d]cycloheptenyl)ethylenediamine and N,N’-bis(5-phenyl-10,11- dihydro-5-dibenzo[a,d]cycloheptenyl)ethylenediamine
- Authors: Barton, Danica Brione
- Date: 2023-04
- Subjects: Ethylenediaminetetraacetic acid -- South Africa , Enzymes –Analysis
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61176 , vital:69791
- Description: In this work, the selectivity behaviour of two host compounds, namely N,N’-bis(5-phenyl-5- ibenzo[a,d]cycloheptenyl)ethylenediamine (H1) and N,N’-bis(5-phenyl-10,11-dihydro-5- ibenzo[a,d]cycloheptenyl)ethylenediamine (H2), was assessed in mixtures of difficult-toseparate compounds, including the xylenes and ethylbenzene, pyridine and methylpyridines, and anisole and methylanisoles. These host compounds were synthesized using Grignard addition reactions with phenylmagnesium bromide on dibenzo[a,d]cyclohepten-5-one and 10,11- dihydrodibenzo[a,d]cyclohepten-5-one, respectively. The resultant alcohols were treated with perchloric acid to form the corresponding perchlorate salts, which were then reacted with ethylenediamine to afford the required H1 and H2 host compounds. Yields were 95 ad 52% for this final step in each case. An investigation of the conformations, both from experiment (using single crystal X-ray diffractometry (SCXRD) on the apohost compound) and computational calculations was undertaken. Unfortunately, H1 always crystallized out as a powder unless this host compound formed a complex with a guest species, and so could not be subjected to SCXRD analysis as apohost alone. However, a single crystal structure for apohost H2 was successfully obtained and compared with computational data from a previous investigation. It was observed that the conformation of apohost H2 compared favourably with that of the lowest energy conformer from that work. In single solvent recrystallization experiments with o-, m-, p-xylene (o-Xy, m-Xy, p-Xy) and ethylbenzene (EB), both H1 and H2 formed complexes with only one of the four guest species, namely p-Xy and o-Xy, respectively. The host:guest (H:G) ratios were 1:1 for both of these complexes. In the equimolar guest/guest competition experiments, inclusion complexes only formed when p-Xy or o-Xy, respectively, were present in the mixtures; if p-Xy (for experiments with H1) or o-Xy (H2) was absent from these mixtures, only apohost was recovered from the glass vessels. Three selectivity profiles were constructed for each of these host compounds, in which each one was recrystallized from binary mixed guests in various proportions. These demonstrated an overwhelming preference of H1 for p-Xy and H2 for o-Xy, which concurred with the results from the equimolar experiments. Thermal analysis using H1∙p-Xy revealed that this complex was unstable at ambient conditions, while SCXRD explained this observation: this complex may be defined as a true clathrate since no host‧‧‧guest interactions were identified at all, and the guest was retained in the complex by means of steric factors alone. Furthermore, the guest molecules resided in wide open channels that may have facilitated the guest release process. H2∙o-Xy, on the other hand, was stable at room temperature, and the guest release event only commenced at 69.7 °C (Ton). This too was explained by SCXRD analyses in that interactions between host and guest species were observed in this case. Additionally, the guest molecules were housed in discrete cages, which made their escape more challenging compared with p-Xy in H1∙p-Xy. It was concluded that, in this guest series, both of the host compounds would be effective as separatory tools employing host-guest chemistry protocols due to their remarkable selectivities for p-Xy (H1) and o-Xy (H2). , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Barton, Danica Brione
- Date: 2023-04
- Subjects: Ethylenediaminetetraacetic acid -- South Africa , Enzymes –Analysis
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61176 , vital:69791
- Description: In this work, the selectivity behaviour of two host compounds, namely N,N’-bis(5-phenyl-5- ibenzo[a,d]cycloheptenyl)ethylenediamine (H1) and N,N’-bis(5-phenyl-10,11-dihydro-5- ibenzo[a,d]cycloheptenyl)ethylenediamine (H2), was assessed in mixtures of difficult-toseparate compounds, including the xylenes and ethylbenzene, pyridine and methylpyridines, and anisole and methylanisoles. These host compounds were synthesized using Grignard addition reactions with phenylmagnesium bromide on dibenzo[a,d]cyclohepten-5-one and 10,11- dihydrodibenzo[a,d]cyclohepten-5-one, respectively. The resultant alcohols were treated with perchloric acid to form the corresponding perchlorate salts, which were then reacted with ethylenediamine to afford the required H1 and H2 host compounds. Yields were 95 ad 52% for this final step in each case. An investigation of the conformations, both from experiment (using single crystal X-ray diffractometry (SCXRD) on the apohost compound) and computational calculations was undertaken. Unfortunately, H1 always crystallized out as a powder unless this host compound formed a complex with a guest species, and so could not be subjected to SCXRD analysis as apohost alone. However, a single crystal structure for apohost H2 was successfully obtained and compared with computational data from a previous investigation. It was observed that the conformation of apohost H2 compared favourably with that of the lowest energy conformer from that work. In single solvent recrystallization experiments with o-, m-, p-xylene (o-Xy, m-Xy, p-Xy) and ethylbenzene (EB), both H1 and H2 formed complexes with only one of the four guest species, namely p-Xy and o-Xy, respectively. The host:guest (H:G) ratios were 1:1 for both of these complexes. In the equimolar guest/guest competition experiments, inclusion complexes only formed when p-Xy or o-Xy, respectively, were present in the mixtures; if p-Xy (for experiments with H1) or o-Xy (H2) was absent from these mixtures, only apohost was recovered from the glass vessels. Three selectivity profiles were constructed for each of these host compounds, in which each one was recrystallized from binary mixed guests in various proportions. These demonstrated an overwhelming preference of H1 for p-Xy and H2 for o-Xy, which concurred with the results from the equimolar experiments. Thermal analysis using H1∙p-Xy revealed that this complex was unstable at ambient conditions, while SCXRD explained this observation: this complex may be defined as a true clathrate since no host‧‧‧guest interactions were identified at all, and the guest was retained in the complex by means of steric factors alone. Furthermore, the guest molecules resided in wide open channels that may have facilitated the guest release process. H2∙o-Xy, on the other hand, was stable at room temperature, and the guest release event only commenced at 69.7 °C (Ton). This too was explained by SCXRD analyses in that interactions between host and guest species were observed in this case. Additionally, the guest molecules were housed in discrete cages, which made their escape more challenging compared with p-Xy in H1∙p-Xy. It was concluded that, in this guest series, both of the host compounds would be effective as separatory tools employing host-guest chemistry protocols due to their remarkable selectivities for p-Xy (H1) and o-Xy (H2). , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2023
- Full Text:
- Date Issued: 2023-04
Anaerobic process formulation for methane production during dry fermentation of Acacia Mearnsii (black wattle) feedstock
- Authors: Tambro, Boniface Kangire
- Date: 2023-04
- Subjects: Anaerobic , Methane production , Fermentation -Acacia mearnsii
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/66218 , vital:74443
- Description: Various batch anaerobic digestion configurations and procedures, for the production of biogas using different feed-stock, have been undertaken in multiple studies. The research presented is set apart in its approach as it focuses on the use of black wattle leaves and cow dung mixture as feedstock to a micro plant facility creating biogas with a methane content of at least 50% during a short retention period of 30 to 35 days. Varying process parameters were applied to investigate the effect on methane production; the temperature control in a mesophilic range with a target temperature of 37°C, draining and drenching of inoculant as a means of heating reactors, and the effect of mixing mass ratio (black wattle leaves: cow manure) related to carbon and nitrogen were studied. A closed-loop batch anaerobic digester, based on the bio-methane potential principle, was used to conduct three individual experiments, each with two reactors. The carbon and nitrogen content of wet black wattle leaves, cow manure, and dam water were examined in triplicate. The average carbon content of wet black wattle leaves, cow manure, and dam water used during experimentation was found to be 6.75%, 27.84%, v and 1%, respectively with corresponding nitrogen content values of 0.57%, 1.44%, and 1%. The C: N ratio was 19.3:1 for wet black wattle, 11.84:1 for the cow manure, and 1:1 for the dam water with the total extracted solids in wet black wattle and cow manure were 46.32 % and 12.65 %. From the samples tested, the mixture of wet black wattle leaves and cow manure with a C: N ratio of 25:1 for the first reactor and 20:1 for the second reactor was used. Both mixtures had a pH of 6.3. Draining and drenching of reactors twice daily, by inoculation, kept the temperature in a mesophilic range, with 37°C as the optimal temperature to assess the production of methane from a mixture of black wattle leaves and cow manure, with temperature, pH, and C: N ratio kept constant. The results showed that the reactor with a C: N ratio of 25:1 and at an average temperature of 36.74°C produced 9170 ml of biogas within 35 days, of which 1094 ml was methane. The maximum methane production was during week 4 when 335 ml, or 25.81% of total biogas, was collected. Sufficient evidence exist that biogas production from a mixture of wet black wattle leaves and cow manure is feasible, but require further investigation to increase the yield. , Thesis (MEng) -- Faculty of Engineering, the Built Environment, and information Technology, School of Engineering: Mechanical, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Tambro, Boniface Kangire
- Date: 2023-04
- Subjects: Anaerobic , Methane production , Fermentation -Acacia mearnsii
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/66218 , vital:74443
- Description: Various batch anaerobic digestion configurations and procedures, for the production of biogas using different feed-stock, have been undertaken in multiple studies. The research presented is set apart in its approach as it focuses on the use of black wattle leaves and cow dung mixture as feedstock to a micro plant facility creating biogas with a methane content of at least 50% during a short retention period of 30 to 35 days. Varying process parameters were applied to investigate the effect on methane production; the temperature control in a mesophilic range with a target temperature of 37°C, draining and drenching of inoculant as a means of heating reactors, and the effect of mixing mass ratio (black wattle leaves: cow manure) related to carbon and nitrogen were studied. A closed-loop batch anaerobic digester, based on the bio-methane potential principle, was used to conduct three individual experiments, each with two reactors. The carbon and nitrogen content of wet black wattle leaves, cow manure, and dam water were examined in triplicate. The average carbon content of wet black wattle leaves, cow manure, and dam water used during experimentation was found to be 6.75%, 27.84%, v and 1%, respectively with corresponding nitrogen content values of 0.57%, 1.44%, and 1%. The C: N ratio was 19.3:1 for wet black wattle, 11.84:1 for the cow manure, and 1:1 for the dam water with the total extracted solids in wet black wattle and cow manure were 46.32 % and 12.65 %. From the samples tested, the mixture of wet black wattle leaves and cow manure with a C: N ratio of 25:1 for the first reactor and 20:1 for the second reactor was used. Both mixtures had a pH of 6.3. Draining and drenching of reactors twice daily, by inoculation, kept the temperature in a mesophilic range, with 37°C as the optimal temperature to assess the production of methane from a mixture of black wattle leaves and cow manure, with temperature, pH, and C: N ratio kept constant. The results showed that the reactor with a C: N ratio of 25:1 and at an average temperature of 36.74°C produced 9170 ml of biogas within 35 days, of which 1094 ml was methane. The maximum methane production was during week 4 when 335 ml, or 25.81% of total biogas, was collected. Sufficient evidence exist that biogas production from a mixture of wet black wattle leaves and cow manure is feasible, but require further investigation to increase the yield. , Thesis (MEng) -- Faculty of Engineering, the Built Environment, and information Technology, School of Engineering: Mechanical, 2023
- Full Text:
- Date Issued: 2023-04
Assessing diatom community composition and structure in palaeosediments of a southern Cape coastal wetland
- Authors: Sepato, Tshiamo Tsholofelo
- Date: 2023-04
- Subjects: Diatoms --South Africa – Southern Cape , Paleoecology , Marine algae --South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61258 , vital:69847
- Description: Palaeoenvironmental studies are important as they aid in reconstructing histories of past landscapes and provide key long-term information for the conservation and management of ecosystems. The southern Cape coast is a focus area for palaeoenvironmental research due to its high botanical and climatic importance. A three-metre sediment core was retrieved from Whale Rock wetland (Plettenberg Bay, southern Cape Coast) and spanned ~8000 years – a large proportion of the Holocene epoch. Diatom data preserved in palaeosediments of the Whale Rock wetland are presented within this study. A total of 48 diatom species was identified. Based on the multivariate statistical analysis, the diatom assemblages were divided into three zones: Zone WR-1-A (~7200 – 6450 cal yr BP); Zone WR-1- B (~6450 – 6250 cal yr BP) and Zone WR-1-C (~250 cal yr BP – to present). Two diatom preservation hiatus periods were observed at ~8000 – 7200 cal yr BP and ~6400 – 230 cal yr BP. The results indicated that benthic diatom species were significantly dominant throughout the Whale Rock record. The diatom evidence revealed that the Whale Rock wetland system freshened over time as diatom species identified in Zone WR-1-A and Zone WR-1- B indicated marine influences whereas Zone WR-1-C displayed a dominance of species that thrive in freshwater conditions. A transitional phase occurred at ~6400 cal yr BP where abrupt changes began prior to the significant ~6400 – 230 cal yr BP diatom preservation hiatus period. Principal Component Analysis showed that salinity was the main environmental driver of change impacting the species abundance and diversity of diatom communities within the wetland system throughout the Holocene. When compared with regional palaeoenvironmental and palaeolimnological data, it is evident that several other wetland systems moved from a marine/brackish favoured system to a freshwater system with the transitional phase occurring at different periods within the Holocene. This study indicated that diatoms are powerful biological proxies of environmental change. It is recommended that the site be revisited to investigate further the hiatus phases to further explore the lack of diatom preservation for these periods and to also contribute more palaeoenvironmental proxy evidence as well as modern hydrological information. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2023-04
- Authors: Sepato, Tshiamo Tsholofelo
- Date: 2023-04
- Subjects: Diatoms --South Africa – Southern Cape , Paleoecology , Marine algae --South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61258 , vital:69847
- Description: Palaeoenvironmental studies are important as they aid in reconstructing histories of past landscapes and provide key long-term information for the conservation and management of ecosystems. The southern Cape coast is a focus area for palaeoenvironmental research due to its high botanical and climatic importance. A three-metre sediment core was retrieved from Whale Rock wetland (Plettenberg Bay, southern Cape Coast) and spanned ~8000 years – a large proportion of the Holocene epoch. Diatom data preserved in palaeosediments of the Whale Rock wetland are presented within this study. A total of 48 diatom species was identified. Based on the multivariate statistical analysis, the diatom assemblages were divided into three zones: Zone WR-1-A (~7200 – 6450 cal yr BP); Zone WR-1- B (~6450 – 6250 cal yr BP) and Zone WR-1-C (~250 cal yr BP – to present). Two diatom preservation hiatus periods were observed at ~8000 – 7200 cal yr BP and ~6400 – 230 cal yr BP. The results indicated that benthic diatom species were significantly dominant throughout the Whale Rock record. The diatom evidence revealed that the Whale Rock wetland system freshened over time as diatom species identified in Zone WR-1-A and Zone WR-1- B indicated marine influences whereas Zone WR-1-C displayed a dominance of species that thrive in freshwater conditions. A transitional phase occurred at ~6400 cal yr BP where abrupt changes began prior to the significant ~6400 – 230 cal yr BP diatom preservation hiatus period. Principal Component Analysis showed that salinity was the main environmental driver of change impacting the species abundance and diversity of diatom communities within the wetland system throughout the Holocene. When compared with regional palaeoenvironmental and palaeolimnological data, it is evident that several other wetland systems moved from a marine/brackish favoured system to a freshwater system with the transitional phase occurring at different periods within the Holocene. This study indicated that diatoms are powerful biological proxies of environmental change. It is recommended that the site be revisited to investigate further the hiatus phases to further explore the lack of diatom preservation for these periods and to also contribute more palaeoenvironmental proxy evidence as well as modern hydrological information. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2023-04
Assessing the impact of COVID-19 on South African organisation’s way of working: A Black Management Forum Perspective
- Authors: Koti, Sonwabo Mawethu
- Date: 2023-04
- Subjects: COVID-19 (Disease)-- South Africa , Black Management Forum
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61454 , vital:70653
- Description: The aim of this study was to examine impact of Covid-19 on organisation’s work environment in South Africa, based on Black Management Forum’s views. The outbreak of Covid-19 led to disruption on organisation’s ways of working, this was due to lockdown rules and regulations, restrictions imposed by Government to curb the spread of the virus. The study used quantitative method approach; online survey questionnaire was distributed to recruited Black Management Forum (BMF) members who were willing to voluntarily participate via an email and WhatsApp platform. These members were sampled using convenience and snowball non-probability sampling techniques. The concepts of the study were scientifically hypothesised to determine whether such associations exist within the context of the work environment and productivity within the different corporate sector of industries in South Africa. The study findings confirmed that most organisations were impacted, and they changed their ways of work by implementing mostly work partly from home (WPFH) hybrid work model. The study findings also revealed that, workload was more during the pandemic than before, as results of changed work environment. Other finding from the study indicated that most employees adapted well to changes, understood the need for change and they performed well. Most employees also felt more productive and well supported and respected by managers. Service sectors were more impacted than other sectors and they showed more productivity as well. Most respondents felt that the adopted ways of working would remain post-pandemic and that they prefer this hybrid model of working because it gave them an opportunity to manage their own time. vii The research is significant as it critically examined how a pandemic can create organisational changes and the extent to which organisations must adjust. The research also provides policy recommendations that could assist corporate organisations in adopting new ways of working. , Thesis (PhD) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Koti, Sonwabo Mawethu
- Date: 2023-04
- Subjects: COVID-19 (Disease)-- South Africa , Black Management Forum
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61454 , vital:70653
- Description: The aim of this study was to examine impact of Covid-19 on organisation’s work environment in South Africa, based on Black Management Forum’s views. The outbreak of Covid-19 led to disruption on organisation’s ways of working, this was due to lockdown rules and regulations, restrictions imposed by Government to curb the spread of the virus. The study used quantitative method approach; online survey questionnaire was distributed to recruited Black Management Forum (BMF) members who were willing to voluntarily participate via an email and WhatsApp platform. These members were sampled using convenience and snowball non-probability sampling techniques. The concepts of the study were scientifically hypothesised to determine whether such associations exist within the context of the work environment and productivity within the different corporate sector of industries in South Africa. The study findings confirmed that most organisations were impacted, and they changed their ways of work by implementing mostly work partly from home (WPFH) hybrid work model. The study findings also revealed that, workload was more during the pandemic than before, as results of changed work environment. Other finding from the study indicated that most employees adapted well to changes, understood the need for change and they performed well. Most employees also felt more productive and well supported and respected by managers. Service sectors were more impacted than other sectors and they showed more productivity as well. Most respondents felt that the adopted ways of working would remain post-pandemic and that they prefer this hybrid model of working because it gave them an opportunity to manage their own time. vii The research is significant as it critically examined how a pandemic can create organisational changes and the extent to which organisations must adjust. The research also provides policy recommendations that could assist corporate organisations in adopting new ways of working. , Thesis (PhD) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
Assessing the Role of Women on Small-Scale Agribusiness at Wincanton Estate in Kariega, South Africa
- Authors: Zalwango, Joanita
- Date: 2023-04
- Subjects: Leadership in women , Women in agriculture --Eastern Cape – Kariega , Climate change -- Kariega
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61054 , vital:69690
- Description: Agricultural development is a prerequisite for most economies to grow. Agricultural activities are key to food security and sustaining livelihoods globally. Within the African continent, more women are employed in agriculture and agribusiness activities than other sectors. As main contributors to the labour force in the agricultural sector, women get involved in many agricultural and agribusiness activities to sustain their families. With over 60% of women in Sub–Saharan Africa involved in agriculture, there is need to explore and assess the role they play in promoting agribusiness with special focus on Kariega, in South Africa. The identified participants in the study, as self-employed farmers, participate in agribusiness, thereby creating employment opportunities whilst generating personal incomes. Several benefits to female involvement in agribusiness were identified, including the ability to sustain families, stable cash flow, and empowerment. Several challenges were identified, including adequate capital, inaccessibility to private land, droughts, water scarcity, climate change effects and stigmatisation. Through a feminist qualitative methodology, the study utilised semi- structured interviews to collect data from 10 women involved in agribusiness around Kariega, Nelson Mandela Bay. Themes from the findings are analysed to highlight the important role played by women toward agribusiness, their achievements, government and private sector role and the hinderances still faced by these women in agricultural cooperatives. Discussion from the analysis included a framework of recommendations, for policy makers, development practitioners and future researchers. The study found that all stakeholders involved in the agricultural sector should work together for sustainable agricultural development and sustainable development goals to be achieved. Sustainability among women farmers can be achieved by (a) Increasing government intervention and support (b) Climate smart agriculture practices (c) Overcoming stigmatisation (d) Encouraging and involving the youth (e) Diversification and integration of farm businesses and (f) Using contract farming. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2023
- Full Text: false
- Date Issued: 2023-04
Assessing the Role of Women on Small-Scale Agribusiness at Wincanton Estate in Kariega, South Africa
- Authors: Zalwango, Joanita
- Date: 2023-04
- Subjects: Leadership in women , Women in agriculture --Eastern Cape – Kariega , Climate change -- Kariega
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61054 , vital:69690
- Description: Agricultural development is a prerequisite for most economies to grow. Agricultural activities are key to food security and sustaining livelihoods globally. Within the African continent, more women are employed in agriculture and agribusiness activities than other sectors. As main contributors to the labour force in the agricultural sector, women get involved in many agricultural and agribusiness activities to sustain their families. With over 60% of women in Sub–Saharan Africa involved in agriculture, there is need to explore and assess the role they play in promoting agribusiness with special focus on Kariega, in South Africa. The identified participants in the study, as self-employed farmers, participate in agribusiness, thereby creating employment opportunities whilst generating personal incomes. Several benefits to female involvement in agribusiness were identified, including the ability to sustain families, stable cash flow, and empowerment. Several challenges were identified, including adequate capital, inaccessibility to private land, droughts, water scarcity, climate change effects and stigmatisation. Through a feminist qualitative methodology, the study utilised semi- structured interviews to collect data from 10 women involved in agribusiness around Kariega, Nelson Mandela Bay. Themes from the findings are analysed to highlight the important role played by women toward agribusiness, their achievements, government and private sector role and the hinderances still faced by these women in agricultural cooperatives. Discussion from the analysis included a framework of recommendations, for policy makers, development practitioners and future researchers. The study found that all stakeholders involved in the agricultural sector should work together for sustainable agricultural development and sustainable development goals to be achieved. Sustainability among women farmers can be achieved by (a) Increasing government intervention and support (b) Climate smart agriculture practices (c) Overcoming stigmatisation (d) Encouraging and involving the youth (e) Diversification and integration of farm businesses and (f) Using contract farming. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2023
- Full Text: false
- Date Issued: 2023-04