Integration of clinical legal education with procedural law modules
- Authors: Welgemoed, Marc
- Date: 2021-12
- Subjects: Law -- Study and teaching (Clinical education) , Procedure law
- Language: English
- Type: Doctoral theses , Thesis
- Identifier: http://hdl.handle.net/10948/56123 , vital:55571
- Description: This research evaluates the role that Clinical Legal Education (CLE) can and should play in the teaching and learning of procedural law modules, ie Civil Procedure, Criminal Procedure and the Law of Evidence. It is argued that the doctrine of transformative constitutionalism provides a sound theoretical basis for the integration of CLE in the teaching and learning of procedural law modules in that there is a constitutional imperative on law schools to train law graduates, who are ready for entry into legal practice, as far as adequate theoretical knowledge and practical skills are concerned. This research provides an indication of how the integration of CLE with procedural law modules can improve the appreciation of the values of the Constitution of the Republic of South Africa 108 of 1996 by law graduates. Graduates will learn the importance of advancing social and procedural justice when rendering legal services to members of the public. Furthermore, graduates will be equipped with valuable graduate attributes required for legal practice. The conclusion of this research is that an integrated teaching and learning methodology, in relation to procedural law modules, will result in producing better law graduates for legal practice. The result of this will be that future legal practitioners, who can serve the public in a professional, ethical and accountable manner as envisaged by the Legal Practice Act 28 of 2014, immediately after graduating from law schools, will be produced. , Thesis (LLD) -- Faculty of Law, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Welgemoed, Marc
- Date: 2021-12
- Subjects: Law -- Study and teaching (Clinical education) , Procedure law
- Language: English
- Type: Doctoral theses , Thesis
- Identifier: http://hdl.handle.net/10948/56123 , vital:55571
- Description: This research evaluates the role that Clinical Legal Education (CLE) can and should play in the teaching and learning of procedural law modules, ie Civil Procedure, Criminal Procedure and the Law of Evidence. It is argued that the doctrine of transformative constitutionalism provides a sound theoretical basis for the integration of CLE in the teaching and learning of procedural law modules in that there is a constitutional imperative on law schools to train law graduates, who are ready for entry into legal practice, as far as adequate theoretical knowledge and practical skills are concerned. This research provides an indication of how the integration of CLE with procedural law modules can improve the appreciation of the values of the Constitution of the Republic of South Africa 108 of 1996 by law graduates. Graduates will learn the importance of advancing social and procedural justice when rendering legal services to members of the public. Furthermore, graduates will be equipped with valuable graduate attributes required for legal practice. The conclusion of this research is that an integrated teaching and learning methodology, in relation to procedural law modules, will result in producing better law graduates for legal practice. The result of this will be that future legal practitioners, who can serve the public in a professional, ethical and accountable manner as envisaged by the Legal Practice Act 28 of 2014, immediately after graduating from law schools, will be produced. , Thesis (LLD) -- Faculty of Law, 2021
- Full Text:
- Date Issued: 2021-12
Microstructural characterization of Swift Heavy Ion (SHI) induced rotation in single crystal NiO
- Authors: Douglas-Henry, Danielle
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53648 , vital:45685
- Description: Swift Heavy Ions (SHI) are characterised by having energies greater than 1 MeV per nucleon with an atomic mass greater than 6 amu. Exposure to irradiation of this type has been known to produce latent tracks in insulators. This is due to the energy loss through the material being governed by electronic excitation processes. The extent of the track formation and microstructural changes induced has been reported to be material specific. Models such as the thermal spike model have been used to explain these changes, however rough approximations are still made. A particularly under studied phenomena is the collective rotation seen in materials exposed to off-normal incidence irradiation. To date the only available experimental data is X-Ray Diffraction (XRD) spectra and surface shifts. This does not allow for depth-dependent rotation studies and very little can be deduced regarding the microstructure of the modified volume. In this study, the microstructural changes in single crystal Nickel Oxide (NiO) have been studied using electron microscopy techniques. A depth dependent investigation of the crystal rotation was performed using Selected Area Electron Diffraction (SAED), Transmission Kikuchi Diffraction (TKD) and Electron Backscatter Diffraction (EBSD). Transmission Electron Microscopy (TEM) and Scanning Transmission Electron Microscopy (STEM) were utilized to interrogate the microstructural changes facilitating the bulk rotation. Five different NiO specimens were investigated. Specimens had surfaces parallel to either the {0 0 1} or {1 1 1} planes. Ion energies used were 593 MeV, 940 MeV and 1.6 GeV, while fluences ranged from 1.0 x 1011 ions/cm² to 9.6 x 1014 ions/cm². Latent track formation in both low fluence (nonoverlapping regime) and high fluence (overlapping regime) specimens were investigated and compared. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-12
- Authors: Douglas-Henry, Danielle
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53648 , vital:45685
- Description: Swift Heavy Ions (SHI) are characterised by having energies greater than 1 MeV per nucleon with an atomic mass greater than 6 amu. Exposure to irradiation of this type has been known to produce latent tracks in insulators. This is due to the energy loss through the material being governed by electronic excitation processes. The extent of the track formation and microstructural changes induced has been reported to be material specific. Models such as the thermal spike model have been used to explain these changes, however rough approximations are still made. A particularly under studied phenomena is the collective rotation seen in materials exposed to off-normal incidence irradiation. To date the only available experimental data is X-Ray Diffraction (XRD) spectra and surface shifts. This does not allow for depth-dependent rotation studies and very little can be deduced regarding the microstructure of the modified volume. In this study, the microstructural changes in single crystal Nickel Oxide (NiO) have been studied using electron microscopy techniques. A depth dependent investigation of the crystal rotation was performed using Selected Area Electron Diffraction (SAED), Transmission Kikuchi Diffraction (TKD) and Electron Backscatter Diffraction (EBSD). Transmission Electron Microscopy (TEM) and Scanning Transmission Electron Microscopy (STEM) were utilized to interrogate the microstructural changes facilitating the bulk rotation. Five different NiO specimens were investigated. Specimens had surfaces parallel to either the {0 0 1} or {1 1 1} planes. Ion energies used were 593 MeV, 940 MeV and 1.6 GeV, while fluences ranged from 1.0 x 1011 ions/cm² to 9.6 x 1014 ions/cm². Latent track formation in both low fluence (nonoverlapping regime) and high fluence (overlapping regime) specimens were investigated and compared. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-12
Ocean structures and dynamics of two open bays on the eastern Agulhas Bank
- Authors: Dlomo, Xolisa
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53607 , vital:45680
- Description: Upwelling, bay-scale currents, fronts and mixing in Algoa Bay and St Francis Bay occur over both short and long time periods. These physical ocean dynamics drive the temporal and spatial distribution of nutrients in the bays, there by influencing primary and secondary production. Thermal gradients and fronts are driven by the wind and open ocean influences, such as the Agulhas Current, daily and seasonal variations in solar radiation, long and short period waves, air-sea fluxes, coastal trapped waves and terrestrial freshwater inflow. These phenomena are poorly understood along this part of the coastline and were the focus of this study. I investigated the dominant temperature scales of variability in both bays, to determine which isotherm is best suited to describe temperature fluctuations and thermocline spatiotemporal variability in and between the two bays. I investigated upwelling spatiotemporal variability in the two bays and tested whether upwelling occurs at the opposite sides of the bays with a change in wind direction. Thereafter studied the occurrence and drivers of winter upwelling events. The wind-driven current spatiotemporal variability and correlations were investigated at the extremities of the two bays. The daily, intra-seasonal and yearly variation in temperature structures in Algoa Bay and St. Francis Bay were mainly driven by the local winds, coastal topography, and bathymetry. The most suitable isotherm to describe thermal fluctuations and variability in Algoa Bay shallower sites was 16.5 °C and its mean depth was 16.2 m. The best isotherm for the deeper sites in Algoa Bay was 15.7 °C with a depth of 33.1 m. The average temperature and depth of the best isotherm to describe thermal fluctuations in St. Francis Bay for the shallower sites was15.80 °C and 16.83 m, and for the deeper sites it was 15.10 °C and 32.08 m. Algoa Bay showed an average cooling trend of -0.000172 °C per year, whereas in St. Francis Bay a warming average trend of 0.0188 °C per year was observed over the study period often and six years, respectively. The wind, Coriolis Effect and Ekman Transport were the main external forces that influenced upwelling throughout the year. Since the available mesoscale indices for upwelling intensity lack the resolution needed to characterize and compare inner-shelf upwelling regimes at small spatial scales, I developed a new local, quantitative index of thermal variability. Index calculations were based on hourly records of in site depth-averaged temperatures, measured at 6 sites in St. Francis Bay and at 8 sites in Algoa Bay. Using the Multivariate Upwelling Zone Index of Cooling (MUZIC) I found that Woody Cape and Blue Horizon Bay had the highest upwelling intensity in Algoa Bay and St. Francis Bay, respectively. The other sites were ordinated and ranked according to their upwelling rates and intensity. Evidence of wind-driven winter upwelling was found to be a common occurrence in both bays. There was no obvious current seasonality observed, however, strong spectral signals in the period of a weather band (4 –7 days) were present. Current structures were generally positively correlated with wind variations in both bays. Thus, when westerly/easterly winds blew the overall surface current direction was eastward/westward. I observed a pronounced current spatiotemporal variability that was driven by local winds. The Bird Island surface currents in Algoa Bay were strongly correlated at 0–lag day with the winds, however, in Cape Recife the strongest correlations were usually observed at 1–lag day highlighting the spatiotemporal influence of wind regimes on current structures in Algoa Bay. Bird Island current speeds were higher and had an obvious bimodal directional variation (south westward /north eastward) compared to Cape Recife currents, which generally had a slower current speed with a strong west-north westward direction. In St. Francis Bay, the Schoenmakerskop surface currents showed weak positive correlation with winds at 0–lag day, however, stronger negative correlations were observed at 4–lag days. The current surface speeds in Schoenmakerskop were the lowest and varied directionally between north-north eastward and south-south eastward. The basic data requirements (i.e. SST/ UTR and ADCP time series) and the simplicity of the calculations make these indices a useful tool to apply to a large number of sites nationally and internationally, and to examine the generality of community and population-level responses to physical forcing. , Thesis (PhD) -- Faculty of Science, Journalsim and Media Studies, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Dlomo, Xolisa
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53607 , vital:45680
- Description: Upwelling, bay-scale currents, fronts and mixing in Algoa Bay and St Francis Bay occur over both short and long time periods. These physical ocean dynamics drive the temporal and spatial distribution of nutrients in the bays, there by influencing primary and secondary production. Thermal gradients and fronts are driven by the wind and open ocean influences, such as the Agulhas Current, daily and seasonal variations in solar radiation, long and short period waves, air-sea fluxes, coastal trapped waves and terrestrial freshwater inflow. These phenomena are poorly understood along this part of the coastline and were the focus of this study. I investigated the dominant temperature scales of variability in both bays, to determine which isotherm is best suited to describe temperature fluctuations and thermocline spatiotemporal variability in and between the two bays. I investigated upwelling spatiotemporal variability in the two bays and tested whether upwelling occurs at the opposite sides of the bays with a change in wind direction. Thereafter studied the occurrence and drivers of winter upwelling events. The wind-driven current spatiotemporal variability and correlations were investigated at the extremities of the two bays. The daily, intra-seasonal and yearly variation in temperature structures in Algoa Bay and St. Francis Bay were mainly driven by the local winds, coastal topography, and bathymetry. The most suitable isotherm to describe thermal fluctuations and variability in Algoa Bay shallower sites was 16.5 °C and its mean depth was 16.2 m. The best isotherm for the deeper sites in Algoa Bay was 15.7 °C with a depth of 33.1 m. The average temperature and depth of the best isotherm to describe thermal fluctuations in St. Francis Bay for the shallower sites was15.80 °C and 16.83 m, and for the deeper sites it was 15.10 °C and 32.08 m. Algoa Bay showed an average cooling trend of -0.000172 °C per year, whereas in St. Francis Bay a warming average trend of 0.0188 °C per year was observed over the study period often and six years, respectively. The wind, Coriolis Effect and Ekman Transport were the main external forces that influenced upwelling throughout the year. Since the available mesoscale indices for upwelling intensity lack the resolution needed to characterize and compare inner-shelf upwelling regimes at small spatial scales, I developed a new local, quantitative index of thermal variability. Index calculations were based on hourly records of in site depth-averaged temperatures, measured at 6 sites in St. Francis Bay and at 8 sites in Algoa Bay. Using the Multivariate Upwelling Zone Index of Cooling (MUZIC) I found that Woody Cape and Blue Horizon Bay had the highest upwelling intensity in Algoa Bay and St. Francis Bay, respectively. The other sites were ordinated and ranked according to their upwelling rates and intensity. Evidence of wind-driven winter upwelling was found to be a common occurrence in both bays. There was no obvious current seasonality observed, however, strong spectral signals in the period of a weather band (4 –7 days) were present. Current structures were generally positively correlated with wind variations in both bays. Thus, when westerly/easterly winds blew the overall surface current direction was eastward/westward. I observed a pronounced current spatiotemporal variability that was driven by local winds. The Bird Island surface currents in Algoa Bay were strongly correlated at 0–lag day with the winds, however, in Cape Recife the strongest correlations were usually observed at 1–lag day highlighting the spatiotemporal influence of wind regimes on current structures in Algoa Bay. Bird Island current speeds were higher and had an obvious bimodal directional variation (south westward /north eastward) compared to Cape Recife currents, which generally had a slower current speed with a strong west-north westward direction. In St. Francis Bay, the Schoenmakerskop surface currents showed weak positive correlation with winds at 0–lag day, however, stronger negative correlations were observed at 4–lag days. The current surface speeds in Schoenmakerskop were the lowest and varied directionally between north-north eastward and south-south eastward. The basic data requirements (i.e. SST/ UTR and ADCP time series) and the simplicity of the calculations make these indices a useful tool to apply to a large number of sites nationally and internationally, and to examine the generality of community and population-level responses to physical forcing. , Thesis (PhD) -- Faculty of Science, Journalsim and Media Studies, 2021
- Full Text:
- Date Issued: 2021-12
Possible futures for South Africa’s transition to a low carbon economy towards 2050
- Authors: Myeki, Pumla Qamisa
- Date: 2021-12
- Subjects: Environmental economics -- South Africa , Carbon dioxide mitigation -- Economic aspects -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54969 , vital:48523
- Description: South Africa together with the rest of the world have been caught up in a new policy wave of developing policies that support the move towards sustainable, low-carbon and climate-resilient economies underpinned by the desire to reduce greenhouse gas (GHG) emissions as per declared Intended Nationally Determined Contributions (INDCs). However, South Africa’s economic development model is still characterised by a coal-based energy structure, which imposes a significant stress on its natural resources and environment, due to vast quantities of GHG emissions into the atmosphere. Currently, in South Africa there is no sign of any coherent plan for achieving the socio-technological change that the transition to a low carbon economy vision implies. The existing policies, strategies and plans are not yet fully aligned with the low carbon transition agenda as they were developed prior to the United Nations Framework Convention on Climate Change (UNFCCC) Paris Agreement call. There has been minimal or no noticeable change in South Africa’s carbon-dependence, which may further lead to market failure effects. The existing policy and regulatory framework for low carbon economy (LCE) transition is perceived complimentary; but is defined by short-term, overarching and vague policies that lack forward thinking far-sighted element of framing the desired future. To tackle the short-termism of South African LCE policy, the study commissioned a mixed-method, futures research approach in order to facilitate a kind of forward thinking required for integrated manoeuvres and long-term vision of different alternating choices with a cognisance of their respective repercussions. The primary research objective of this study was to develop and illustrate possible scenarios for South Africa’s low-carbon economy transition futures over the next 30 years, taking into consideration numerous uncertainties about the future structure of South Africa’s economy, costs of the transition as well as potential technological breakthroughs that could emerge. This objective was achieved with the ultimate description of possible futures - Ses’fikile, Stimela, Inqanawa and Siyaya phambili, and the identification of Ses’fikile as the desired future state; as outlined by the Integrated Vision for South Africa’s transition to an inclusive, competitive, climate-resilient and low carbon economy future. Further, the secondary objectives outlined in Chapter 1 and 2 of this research study were realised through an all-encompassing literature review, political economy and political, economic, social, technological, environmental, legal (PESTEL) analysis, the Real-Time Delphi exercise as well as scenario planning methodology. This research study extracts intuitions from academic, policy planning and futures research in order to discover the prevailing frontiers in the progression of both the theoretical and real-world requirements considered as essential for fundamental economic transformation to a low-carbon future. Extensive contribution of this study included; - Closing the literature gaps that exist in terms of gaining a deeper understanding into insights on the potential drivers, impacts and global trends in the low-carbon economy transition space. Pushing forward a narrative within and between the economic development, policy decision-making and environment about how to visualise and plan for a decarbonized future economy for South Africa. Futures research approach afforded this research study an opportunity to engage with the uncertainties of the low-carbon economy future, while engaging with emerging issues, trends and weak signals that are transforming South Africa’s social horizons. Policy decision-makers were afforded a chance to improve their policy making while addressing the dynamic nature of implications of the current economic development trajectories, alternative future possibilities as well as transitioning to a preferred low-carbon future. In conclusion, contributions made by low-carbon experts who participated in this study provided bigger picture insights for policy decision makers and can provide timely interventions while deliberating about South Africa’s low-carbon future. Finally, conclusions drawn and recommendations made would assist in the stimulation of discussions for further policy research. Key concepts: Low carbon economy, decarbonisation, futures research, climate-resilient, scenario planning, Real-Time Delphi. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Myeki, Pumla Qamisa
- Date: 2021-12
- Subjects: Environmental economics -- South Africa , Carbon dioxide mitigation -- Economic aspects -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54969 , vital:48523
- Description: South Africa together with the rest of the world have been caught up in a new policy wave of developing policies that support the move towards sustainable, low-carbon and climate-resilient economies underpinned by the desire to reduce greenhouse gas (GHG) emissions as per declared Intended Nationally Determined Contributions (INDCs). However, South Africa’s economic development model is still characterised by a coal-based energy structure, which imposes a significant stress on its natural resources and environment, due to vast quantities of GHG emissions into the atmosphere. Currently, in South Africa there is no sign of any coherent plan for achieving the socio-technological change that the transition to a low carbon economy vision implies. The existing policies, strategies and plans are not yet fully aligned with the low carbon transition agenda as they were developed prior to the United Nations Framework Convention on Climate Change (UNFCCC) Paris Agreement call. There has been minimal or no noticeable change in South Africa’s carbon-dependence, which may further lead to market failure effects. The existing policy and regulatory framework for low carbon economy (LCE) transition is perceived complimentary; but is defined by short-term, overarching and vague policies that lack forward thinking far-sighted element of framing the desired future. To tackle the short-termism of South African LCE policy, the study commissioned a mixed-method, futures research approach in order to facilitate a kind of forward thinking required for integrated manoeuvres and long-term vision of different alternating choices with a cognisance of their respective repercussions. The primary research objective of this study was to develop and illustrate possible scenarios for South Africa’s low-carbon economy transition futures over the next 30 years, taking into consideration numerous uncertainties about the future structure of South Africa’s economy, costs of the transition as well as potential technological breakthroughs that could emerge. This objective was achieved with the ultimate description of possible futures - Ses’fikile, Stimela, Inqanawa and Siyaya phambili, and the identification of Ses’fikile as the desired future state; as outlined by the Integrated Vision for South Africa’s transition to an inclusive, competitive, climate-resilient and low carbon economy future. Further, the secondary objectives outlined in Chapter 1 and 2 of this research study were realised through an all-encompassing literature review, political economy and political, economic, social, technological, environmental, legal (PESTEL) analysis, the Real-Time Delphi exercise as well as scenario planning methodology. This research study extracts intuitions from academic, policy planning and futures research in order to discover the prevailing frontiers in the progression of both the theoretical and real-world requirements considered as essential for fundamental economic transformation to a low-carbon future. Extensive contribution of this study included; - Closing the literature gaps that exist in terms of gaining a deeper understanding into insights on the potential drivers, impacts and global trends in the low-carbon economy transition space. Pushing forward a narrative within and between the economic development, policy decision-making and environment about how to visualise and plan for a decarbonized future economy for South Africa. Futures research approach afforded this research study an opportunity to engage with the uncertainties of the low-carbon economy future, while engaging with emerging issues, trends and weak signals that are transforming South Africa’s social horizons. Policy decision-makers were afforded a chance to improve their policy making while addressing the dynamic nature of implications of the current economic development trajectories, alternative future possibilities as well as transitioning to a preferred low-carbon future. In conclusion, contributions made by low-carbon experts who participated in this study provided bigger picture insights for policy decision makers and can provide timely interventions while deliberating about South Africa’s low-carbon future. Finally, conclusions drawn and recommendations made would assist in the stimulation of discussions for further policy research. Key concepts: Low carbon economy, decarbonisation, futures research, climate-resilient, scenario planning, Real-Time Delphi. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Post-apartheid geographies of studentification at Nelson Mandela University, Port Elizabeth, South Africa
- Authors: Mzileni, Pedro Mihlali
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53758 , vital:45759
- Description: This study takes the concept of studentification from its British conception to the post-apartheid African city, Port Elizabeth (Gqeberha), where the Nelson Mandela University is situated. Studentification refers to the mass arrival of students in university cities and towns and the economic, infrastructural, geographic and sociopolitical changes that the settlements of these students make overtime to such cities and towns. For the case of Nelson Mandela University in Port Elizabeth, this study identified four major areas that are engulfed by studentification and sought to understand how this phenomenon takes shape in them. The study extends the existing terms and languages used to comprehend studentification by introducing a viewpoint of how it emerges in an African post-apartheid city. This is a city that has deindustrialised and has also experienced a capital flight out of its city centre since the 1970s. These declining economic indicators over decades have left the city to decay and experience high rates of unemployment, poverty and housing displacements. But, the post-1994 massification of the South African higher education system introduced new micro-economies for the city mainly through the emergence of student accommodation as a thriving business opportunity in the city in light of increased university enrolments. However, the economic injection brought by student accommodation in this city that has been deindustrialising remains minimal in having the necessary power to turnaround the city’s fortunes and transform the urban space towards a developmental path. This socioeconomic problem is also compounded by the presence of a weak arm of the state (particularly local government) that is unable to play an active role in driving capital flows to deliver tangible urban development. As a result, the university emerges as one of the active public actors in the renewal efforts of the city even though this is not its primary mandate. Thus, the process of studentification in this case takes place in a context defined by a declining higher education political economy and a weak city planning regime. As a result, these factors leave studentification to be vulnerable to being impacted by old colonial-apartheid structures of the city and the economic shortfalls of post-apartheid urban South Africa that have produced a precarious urban space where the private property market and the illicit economy have a stronger hand in determining the power relations that emerge in the city space. Studentification in this African city is expressed in four major geographies: (1) the Summerstrand suburb that is nearest to the University’s main urban campuses, (2) the Central CBD that has experienced capital flight and currently has tall buildings that are former offices of apartheid commerce which have been converted to student accommodation, (3) the deindustrialised and abandoned manufacturing sites at the North End margins of the city which have also been converted to student accommodation, and (4) the Zwide township, an underprivileged black community that is close to the former black Missionvale campus of the University – this is the furthest student accommodation area in the city. The study examines these student communities that emerge out of these four identified areas of the urban space and it also underscores the genre of the political, social, and economic relations of each of these four geographies and their interconnectedness. The study found that the South African post-apartheid city is characterised by an urban model and a university campus design that is a structural outcome of colonisation, apartheid spatial planning, and racial capitalism that still has continuing legacies today. As a result, these four geographies of studentification in the city are historical, racial and economic outcomes of urban power relations that originate from colonialism. Key defining features of studentification in each of these four areas were identified and analysed to illustrate that the South African account of studentification resembles the city’s apartheid legacy and these untransformed urban structures get further compounded by the country’s underfunded higher education massification strategy, its declining economic indicators and a weak state that has ‘soft’ planning and governance systems that are unable to decisively impact the trajectory of socioeconomic development in this university city. These intersecting forces translate into precarious day-to-day student life experiences and structural complications for the governance of the University and the city. These socioeconomic misfortunes also handicap the potential of the city to renew through a studentification economy. Henri Lefebvre’s Production of Space Theory was utilised to frame the study. Methodologically, the study utilised qualitative narrative interviews and document interpretation. This is the first doctoral thesis written about the concept of studentification in South Africa. , Thesis (PhD) -- Faculty of Humanities, The Department of Sociology and Anthropology, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Mzileni, Pedro Mihlali
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53758 , vital:45759
- Description: This study takes the concept of studentification from its British conception to the post-apartheid African city, Port Elizabeth (Gqeberha), where the Nelson Mandela University is situated. Studentification refers to the mass arrival of students in university cities and towns and the economic, infrastructural, geographic and sociopolitical changes that the settlements of these students make overtime to such cities and towns. For the case of Nelson Mandela University in Port Elizabeth, this study identified four major areas that are engulfed by studentification and sought to understand how this phenomenon takes shape in them. The study extends the existing terms and languages used to comprehend studentification by introducing a viewpoint of how it emerges in an African post-apartheid city. This is a city that has deindustrialised and has also experienced a capital flight out of its city centre since the 1970s. These declining economic indicators over decades have left the city to decay and experience high rates of unemployment, poverty and housing displacements. But, the post-1994 massification of the South African higher education system introduced new micro-economies for the city mainly through the emergence of student accommodation as a thriving business opportunity in the city in light of increased university enrolments. However, the economic injection brought by student accommodation in this city that has been deindustrialising remains minimal in having the necessary power to turnaround the city’s fortunes and transform the urban space towards a developmental path. This socioeconomic problem is also compounded by the presence of a weak arm of the state (particularly local government) that is unable to play an active role in driving capital flows to deliver tangible urban development. As a result, the university emerges as one of the active public actors in the renewal efforts of the city even though this is not its primary mandate. Thus, the process of studentification in this case takes place in a context defined by a declining higher education political economy and a weak city planning regime. As a result, these factors leave studentification to be vulnerable to being impacted by old colonial-apartheid structures of the city and the economic shortfalls of post-apartheid urban South Africa that have produced a precarious urban space where the private property market and the illicit economy have a stronger hand in determining the power relations that emerge in the city space. Studentification in this African city is expressed in four major geographies: (1) the Summerstrand suburb that is nearest to the University’s main urban campuses, (2) the Central CBD that has experienced capital flight and currently has tall buildings that are former offices of apartheid commerce which have been converted to student accommodation, (3) the deindustrialised and abandoned manufacturing sites at the North End margins of the city which have also been converted to student accommodation, and (4) the Zwide township, an underprivileged black community that is close to the former black Missionvale campus of the University – this is the furthest student accommodation area in the city. The study examines these student communities that emerge out of these four identified areas of the urban space and it also underscores the genre of the political, social, and economic relations of each of these four geographies and their interconnectedness. The study found that the South African post-apartheid city is characterised by an urban model and a university campus design that is a structural outcome of colonisation, apartheid spatial planning, and racial capitalism that still has continuing legacies today. As a result, these four geographies of studentification in the city are historical, racial and economic outcomes of urban power relations that originate from colonialism. Key defining features of studentification in each of these four areas were identified and analysed to illustrate that the South African account of studentification resembles the city’s apartheid legacy and these untransformed urban structures get further compounded by the country’s underfunded higher education massification strategy, its declining economic indicators and a weak state that has ‘soft’ planning and governance systems that are unable to decisively impact the trajectory of socioeconomic development in this university city. These intersecting forces translate into precarious day-to-day student life experiences and structural complications for the governance of the University and the city. These socioeconomic misfortunes also handicap the potential of the city to renew through a studentification economy. Henri Lefebvre’s Production of Space Theory was utilised to frame the study. Methodologically, the study utilised qualitative narrative interviews and document interpretation. This is the first doctoral thesis written about the concept of studentification in South Africa. , Thesis (PhD) -- Faculty of Humanities, The Department of Sociology and Anthropology, 2021
- Full Text:
- Date Issued: 2021-12
Preventive diplomacy and conflict prevention in Africa: an examination of South Africa’s role in conflict resolution in the Democratic Republic of The Congo
- Authors: Mandela, Siyabulela
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54471 , vital:46584
- Description: The Agenda 2063 tabled a blueprint of seven aspirations, for the Africa we want and one which was critical to this study being a peaceful and secure Africa. As postulated in this aspiration, by Agenda 2063, “Africa shall be free from armed conflict, terrorism, extremism, intolerance, and gender-based violence, which are major threats to human security, peace and development”. The Assembly of the AU committed in the agenda to fast-track actions to silence the guns by 2020, through enhanced dialogue-centred conflict prevention and resolution. The deadline for silencing guns and ending all wars in Africa was 2020, which has passed and Africa remains characterised by violent conflict and underdevelopment. Violent conflict of different magnitudes continues unabated across different states in Africa and remain insolent to any means towards resolution. The African continent is also a host to the most fragile states in the world, and the governments of these countries are unable to cultivate or facilitate the necessary conditions needed for sustainable peace and development. The conditions of poverty, frustration of basic human needs, maladministration, corruption, mismanagement of diversity and ethnic divisions so prevalent in Africa increase the likelihood of violent conflict. Conflict provention, preventive diplomacy, problem-solving workshops, peacebuilding and peacekeeping are all variants of peace operations deemed crucial in this study for Africa’s stability, peace and development. The advancement of preventive diplomacy and conflict provention as a hybrid framework for the prevention and resolution of violent conflict and promotion of sustainable peace and development in Africa was at the centre of this study. The study adopted John Burton’s basic human needs theory as a theoretical framework to further highlight an urgency by African states to prioritise policies and conflict resolution efforts directed at addressing the underlying issues giving rise to violent conflicts, if sustainable peace and development was to be realised in the continent. , Thesis (PhD) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Mandela, Siyabulela
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54471 , vital:46584
- Description: The Agenda 2063 tabled a blueprint of seven aspirations, for the Africa we want and one which was critical to this study being a peaceful and secure Africa. As postulated in this aspiration, by Agenda 2063, “Africa shall be free from armed conflict, terrorism, extremism, intolerance, and gender-based violence, which are major threats to human security, peace and development”. The Assembly of the AU committed in the agenda to fast-track actions to silence the guns by 2020, through enhanced dialogue-centred conflict prevention and resolution. The deadline for silencing guns and ending all wars in Africa was 2020, which has passed and Africa remains characterised by violent conflict and underdevelopment. Violent conflict of different magnitudes continues unabated across different states in Africa and remain insolent to any means towards resolution. The African continent is also a host to the most fragile states in the world, and the governments of these countries are unable to cultivate or facilitate the necessary conditions needed for sustainable peace and development. The conditions of poverty, frustration of basic human needs, maladministration, corruption, mismanagement of diversity and ethnic divisions so prevalent in Africa increase the likelihood of violent conflict. Conflict provention, preventive diplomacy, problem-solving workshops, peacebuilding and peacekeeping are all variants of peace operations deemed crucial in this study for Africa’s stability, peace and development. The advancement of preventive diplomacy and conflict provention as a hybrid framework for the prevention and resolution of violent conflict and promotion of sustainable peace and development in Africa was at the centre of this study. The study adopted John Burton’s basic human needs theory as a theoretical framework to further highlight an urgency by African states to prioritise policies and conflict resolution efforts directed at addressing the underlying issues giving rise to violent conflicts, if sustainable peace and development was to be realised in the continent. , Thesis (PhD) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Sustainable strategies for improved implementation of South Africa's marine living resource legislation
- Authors: Tembo, Danai
- Date: 2021-12
- Subjects: Marine resources conservation -- law and legislation -- South Africa , Fishery law and legislation -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54729 , vital:47531
- Description: South Africa's marine and coastal resources are rich, diverse national assets that represent an important interface of human activity, socio-economic influence, and ecological diversity. The Exclusive Economic Zone (EEZ) has rich fishing grounds that support an industry that makes significant contributions to the economy, providing hundreds of thousands of jobs. Use of this resource-rich ocean space has increased over time. The challenge for South Africa is finding a balance between protecting the ocean space while simultaneously encouraging research, investment, and use of the ocean resources to contribute to economic upliftment and job creation. The South African government's recognition of the vast potential in coastal ecosystems is evident in the introduction of programmes such as Operation Phakisa and the comprehensive legislation. Legislation such as the Marine Living Resources Act (Act No. 18 of 1998) aims to ensure the sustainable utilisation of marine living resources in a manner that is beneficial to all citizens. South Africa's marine living resource legislation is good, reflecting the main principles of fisheries management that are encouraged by the international legal order. However, implementation of the legislation continues to be a challenge; one that extends beyond marine living resource legislation. Although this challenge is acknowledged by the government, little work has been done to understand why they continue to fall short in terms of implementation. Understanding that the implementation of statutes involves various actors, the study sought to understand implementation failures related to marine living resource legislation by explaining the behaviours of actors involved in implementation. A conceptual framework was developed that identified a variety of influencing factors, drawing on elements from different theories. Guided by the framework, document analysis, and key-informant interviews were the means through which the behaviours of actors were investigated and explained. Findings showed that the behaviours of actors were directly and indirectly influenced to varying degrees, by the tractability of the problem, the formal conditions of the law, enforcement, capacity, power relations, and political salience. These behaviours were in turn found to have a strong influence on the status of marine living resources, identified as the implementation outcome. In recognising the behaviours contributing to implementation failures, recommendations were made for improved implementation efforts going forward. Acting to correct these failures will be critical to ensuring South Africa does not continue its current trajectory of marine living resource depletion. Resources that not only make significant contributions to the country's economy but constitute the livelihoods of a significant portion of the country's population. , Thesis (DPHIL) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Tembo, Danai
- Date: 2021-12
- Subjects: Marine resources conservation -- law and legislation -- South Africa , Fishery law and legislation -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54729 , vital:47531
- Description: South Africa's marine and coastal resources are rich, diverse national assets that represent an important interface of human activity, socio-economic influence, and ecological diversity. The Exclusive Economic Zone (EEZ) has rich fishing grounds that support an industry that makes significant contributions to the economy, providing hundreds of thousands of jobs. Use of this resource-rich ocean space has increased over time. The challenge for South Africa is finding a balance between protecting the ocean space while simultaneously encouraging research, investment, and use of the ocean resources to contribute to economic upliftment and job creation. The South African government's recognition of the vast potential in coastal ecosystems is evident in the introduction of programmes such as Operation Phakisa and the comprehensive legislation. Legislation such as the Marine Living Resources Act (Act No. 18 of 1998) aims to ensure the sustainable utilisation of marine living resources in a manner that is beneficial to all citizens. South Africa's marine living resource legislation is good, reflecting the main principles of fisheries management that are encouraged by the international legal order. However, implementation of the legislation continues to be a challenge; one that extends beyond marine living resource legislation. Although this challenge is acknowledged by the government, little work has been done to understand why they continue to fall short in terms of implementation. Understanding that the implementation of statutes involves various actors, the study sought to understand implementation failures related to marine living resource legislation by explaining the behaviours of actors involved in implementation. A conceptual framework was developed that identified a variety of influencing factors, drawing on elements from different theories. Guided by the framework, document analysis, and key-informant interviews were the means through which the behaviours of actors were investigated and explained. Findings showed that the behaviours of actors were directly and indirectly influenced to varying degrees, by the tractability of the problem, the formal conditions of the law, enforcement, capacity, power relations, and political salience. These behaviours were in turn found to have a strong influence on the status of marine living resources, identified as the implementation outcome. In recognising the behaviours contributing to implementation failures, recommendations were made for improved implementation efforts going forward. Acting to correct these failures will be critical to ensuring South Africa does not continue its current trajectory of marine living resource depletion. Resources that not only make significant contributions to the country's economy but constitute the livelihoods of a significant portion of the country's population. , Thesis (DPHIL) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Team-related factors influencing intra-team knowledge sharing in knowledge-intensive businesses
- Authors: Van Greunen, Conrad
- Date: 2021-12
- Subjects: Knowledge management , Organizational behavior
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54630 , vital:46873
- Description: In today’s knowledge-driven economy, knowledge is regarded as possibly the most important factor of production next to labour, land and capital. Knowledge is the lifeblood of a business and therefore crucial for its survival in today’s constantly changing and competitive economic environment. In fact, effective knowledge management holds many benefits for an organisation, such as increased productivity and enhanced business performance. Knowledge management is therefore key to ensure business success. In the knowledge management process, knowledge-sharing is typically recognised as the most important activity. Knowledge that is not shared, in particular tacit knowledge residing in the minds of individuals and accrued over time, loses its value. Notably, team knowledge-sharing is of utmost importance in that it enables a team to resolve practical issues more successfully, given that knowledge is shared among team members that hold various kinds of specialised and unique expertise. Organisations increasingly organise their specialised knowledge-intensive work around projects that consist of allocated members who cooperate on a regular basis to accomplish specific goals before a set deadline. However, without knowledge-sharing among team members, the diverse knowledge of various members cannot be optimally utilised to the benefit of the team and the organisation. Although it is well documented that knowledge-sharing among team members, in particular knowledge-intensive teams, may hold various advantages for teams and organisations in terms of their performance and competitive advantage, researchers also acknowledge that individuals are sometimes reluctant to share their knowledge. Moreover, there is a lack of empirical research on the team-related factors influencing intra-team knowledge-sharing, and a subsequent lack of guidance in terms of encouraging intra-team knowledge-sharing behaviour. Notably, the lack of current systematic, integrated research, that pay particular attention to the team-related factors influencing the knowledge-sharing behaviour within a team is problematic. This lack of research calls for further empirical research to better understand the teamrelated factors influencing intra-team knowledge-sharing behaviour in knowledgeintensive teams. As such, the main research objective of this study was to identify and empirically examine selected team-related factors influencing the intra-team knowledge-sharing behaviour of individual members participating in knowledgeintensive teams in knowledge-intensive businesses. Based on an extensive literature review, the following team-related factors influencing knowledge-sharing in a team context were identified and hypothesised to have a relationship with the dependent variable Intra-team knowledge-sharing behaviour. These factors, which also served as the independent variables in this study, are: Team development competition, Team hyper-competition, Team psychological safety, Perceived surface-level diversity, Perceived deep-level diversity, Team identification, Metacognitive cultural intelligence, Cognitive cultural intelligence, Motivational cultural intelligence, Behavioural cultural intelligence, Affective team commitment, Continuance team commitment and Normative team commitment. Following the construction of the proposed hypothesised model, the researcher proceeded to develop a research design that would be suitable to address the research questions. For the purpose of this study, a positivist research philosophy and deductive approach to theory building were adopted, which is in line with the quantitative nature of this study. In addition, a survey research strategy was used and the study was cross-sectional in nature. The measuring instrument, which was in the form of a self-administered online questionnaire, was subjected to a pilot study. Minor adjustments were made to the questionnaire before an electronic link to the final version, accompanied by a cover letter, was e-mailed to 8 496 potential respondents. These potential respondents, who were identified using a convenience sampling technique, were likely to participate in knowledge-intensive teams and be representative of the population. A total of 384 usable responses were received. Following the data collection, the data were analysed to examine the proposed relationships as depicted in the hypothesised model. To address possible multicollinearity concerns associated with different variables that belong to a shared category, such variables were first combined into a single hierarchical variable. Thereafter, a confirmatory factor analysis (CFA) was performed on each factor that confirmed the factor structures by using various goodness-of-fit indices. Subsequent to the CFAs, the validity and reliability of the measuring instrument was assessed. The reliability of the measuring instrument was evaluated using Cronbach’s alpha coefficients, while the assessment of validity involved calculations of the average variance extracted (AVE) estimates and squared correlations between constructs. Based on the results of the reliability and validity assessments, the hypothesised model was revised accordingly. The revised model included Team development competition, Team psychological safety, Cultural intelligence, Team commitment and Perceived deep-level diversity as the independent variables influencing Intra-team knowledge-sharing behaviour. Descriptive statistics and correlation results were presented on the constructs in the revised hypothesised model, while a structural equation modelling (SEM) analysis was the main statistical technique used to test the significance of the relationships between the dependent and the independent variables. The relationships between selected demographic variables and Intra-team knowledge-sharing behaviour were assessed by means of general linear modelling (GLM), a subset of SEM. In light of these analyses, it was concluded that Team psychological safety, Team development competition, Cultural intelligence and Age have a significant influence on Intra-team knowledge-sharing behaviour and could thus be seen as predictors or determinants thereof. Of all the significant relationships identified in this study, Team psychological safety had the strongest effect on Intra-team knowledge-sharing behaviour. One should, however, not lose sight of the impact that competition and cultural intelligence could have on the knowledge-sharing behaviour of individual members participating in knowledge-intensive teams. This study contributes to the body of knowledge-sharing research in general, but also to knowledge-sharing behaviour in a team context in particular. Besides the theoretical contributions, this study makes several practical recommendations to knowledgeintensive businesses on how to manage the team-related factors influencing the Intrateam knowledge-sharing behaviour of individual members participating in knowledgeintensive teams. These recommendations could possibly enhance the competitive advantage of knowledge-intensive businesses. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Van Greunen, Conrad
- Date: 2021-12
- Subjects: Knowledge management , Organizational behavior
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54630 , vital:46873
- Description: In today’s knowledge-driven economy, knowledge is regarded as possibly the most important factor of production next to labour, land and capital. Knowledge is the lifeblood of a business and therefore crucial for its survival in today’s constantly changing and competitive economic environment. In fact, effective knowledge management holds many benefits for an organisation, such as increased productivity and enhanced business performance. Knowledge management is therefore key to ensure business success. In the knowledge management process, knowledge-sharing is typically recognised as the most important activity. Knowledge that is not shared, in particular tacit knowledge residing in the minds of individuals and accrued over time, loses its value. Notably, team knowledge-sharing is of utmost importance in that it enables a team to resolve practical issues more successfully, given that knowledge is shared among team members that hold various kinds of specialised and unique expertise. Organisations increasingly organise their specialised knowledge-intensive work around projects that consist of allocated members who cooperate on a regular basis to accomplish specific goals before a set deadline. However, without knowledge-sharing among team members, the diverse knowledge of various members cannot be optimally utilised to the benefit of the team and the organisation. Although it is well documented that knowledge-sharing among team members, in particular knowledge-intensive teams, may hold various advantages for teams and organisations in terms of their performance and competitive advantage, researchers also acknowledge that individuals are sometimes reluctant to share their knowledge. Moreover, there is a lack of empirical research on the team-related factors influencing intra-team knowledge-sharing, and a subsequent lack of guidance in terms of encouraging intra-team knowledge-sharing behaviour. Notably, the lack of current systematic, integrated research, that pay particular attention to the team-related factors influencing the knowledge-sharing behaviour within a team is problematic. This lack of research calls for further empirical research to better understand the teamrelated factors influencing intra-team knowledge-sharing behaviour in knowledgeintensive teams. As such, the main research objective of this study was to identify and empirically examine selected team-related factors influencing the intra-team knowledge-sharing behaviour of individual members participating in knowledgeintensive teams in knowledge-intensive businesses. Based on an extensive literature review, the following team-related factors influencing knowledge-sharing in a team context were identified and hypothesised to have a relationship with the dependent variable Intra-team knowledge-sharing behaviour. These factors, which also served as the independent variables in this study, are: Team development competition, Team hyper-competition, Team psychological safety, Perceived surface-level diversity, Perceived deep-level diversity, Team identification, Metacognitive cultural intelligence, Cognitive cultural intelligence, Motivational cultural intelligence, Behavioural cultural intelligence, Affective team commitment, Continuance team commitment and Normative team commitment. Following the construction of the proposed hypothesised model, the researcher proceeded to develop a research design that would be suitable to address the research questions. For the purpose of this study, a positivist research philosophy and deductive approach to theory building were adopted, which is in line with the quantitative nature of this study. In addition, a survey research strategy was used and the study was cross-sectional in nature. The measuring instrument, which was in the form of a self-administered online questionnaire, was subjected to a pilot study. Minor adjustments were made to the questionnaire before an electronic link to the final version, accompanied by a cover letter, was e-mailed to 8 496 potential respondents. These potential respondents, who were identified using a convenience sampling technique, were likely to participate in knowledge-intensive teams and be representative of the population. A total of 384 usable responses were received. Following the data collection, the data were analysed to examine the proposed relationships as depicted in the hypothesised model. To address possible multicollinearity concerns associated with different variables that belong to a shared category, such variables were first combined into a single hierarchical variable. Thereafter, a confirmatory factor analysis (CFA) was performed on each factor that confirmed the factor structures by using various goodness-of-fit indices. Subsequent to the CFAs, the validity and reliability of the measuring instrument was assessed. The reliability of the measuring instrument was evaluated using Cronbach’s alpha coefficients, while the assessment of validity involved calculations of the average variance extracted (AVE) estimates and squared correlations between constructs. Based on the results of the reliability and validity assessments, the hypothesised model was revised accordingly. The revised model included Team development competition, Team psychological safety, Cultural intelligence, Team commitment and Perceived deep-level diversity as the independent variables influencing Intra-team knowledge-sharing behaviour. Descriptive statistics and correlation results were presented on the constructs in the revised hypothesised model, while a structural equation modelling (SEM) analysis was the main statistical technique used to test the significance of the relationships between the dependent and the independent variables. The relationships between selected demographic variables and Intra-team knowledge-sharing behaviour were assessed by means of general linear modelling (GLM), a subset of SEM. In light of these analyses, it was concluded that Team psychological safety, Team development competition, Cultural intelligence and Age have a significant influence on Intra-team knowledge-sharing behaviour and could thus be seen as predictors or determinants thereof. Of all the significant relationships identified in this study, Team psychological safety had the strongest effect on Intra-team knowledge-sharing behaviour. One should, however, not lose sight of the impact that competition and cultural intelligence could have on the knowledge-sharing behaviour of individual members participating in knowledge-intensive teams. This study contributes to the body of knowledge-sharing research in general, but also to knowledge-sharing behaviour in a team context in particular. Besides the theoretical contributions, this study makes several practical recommendations to knowledgeintensive businesses on how to manage the team-related factors influencing the Intrateam knowledge-sharing behaviour of individual members participating in knowledgeintensive teams. These recommendations could possibly enhance the competitive advantage of knowledge-intensive businesses. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
The effect of silicon on palladium migration in pyrolytic carbon and graphite
- Authors: Downey, Justin Michael
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53665 , vital:45684
- Description: The pebble-bed reactor (PBR) is a graphite-moderated, gas-cooled high temperature nuclear reactor design and it is one of six nuclear reactor concepts included in the Generation IV initiative. Pebble-bed reactors use spherical fuel elements (called pebbles) which consist of pyrolytic graphite (which acts as the moderator) and contain thousands of micro-fuel particles called tristructural isotropic (TRISO) particles. These TRISO fuel particles consist of a fissile material (such as U235 in oxide or carbide form) surrounded by a carbon buffer layer, a pyrolytic carbon (PyC) layer, a silicon carbide (SiC) ceramic layer for structural integrity and metallic fission product containment, and an outer PyC layer. The PBR is claimed to be a passively safe design. The commercial development of the first pebble bed reactor was that of the German AVR reactor (German: Arbeitsgemeinschaft Versuchsreaktor) developed during the 1960s. The AVR design was later updated and marketed by a company called HTR. In 1999 the South African electricity company ESKOM obtained the right to access the HTR engineering database that included details of the Siemens/Interatom HTR-Module design. ESKOM worked with HTR on a new design and dubbed it the pebble bed modular reactor (PBMR). The PBMR Co. Ltd. was formed in 1999 and mandated to license and build PBMR reactors. One of the safety considerations which emerged from research is that of metal fission product release from the TRISO fuel particles. Ag110m is a radioactive metallic fission product found to have been released from intact TRISO particles. The release of this Ag isotope is of particular concern because it is highly gamma active and has a half-life of approximately 250 days, resulting in unsafe environments for maintenance workers of PBRs. During the past four decades, many different mechanisms for Ag transport in SiC and release from TRISO particles have been proposed. A promising more recent mechanism suggests that the metallic fission product palladium (Pd) plays a significant role in the transport and release of Ag from intact TRISO particles. In this mechanism Ag transport in irradiated TRISO particle fuel takes place in the presence of the fission product Pd. The Pd reacts with the SiC layer and penetrates the SiC layer along grain boundaries to form a silicide layer which provides a rapid diffusion path for Ag in the SiC. The presence of thin silicide layers in irradiated TRISO particles was subsequently confirmed. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-12
- Authors: Downey, Justin Michael
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53665 , vital:45684
- Description: The pebble-bed reactor (PBR) is a graphite-moderated, gas-cooled high temperature nuclear reactor design and it is one of six nuclear reactor concepts included in the Generation IV initiative. Pebble-bed reactors use spherical fuel elements (called pebbles) which consist of pyrolytic graphite (which acts as the moderator) and contain thousands of micro-fuel particles called tristructural isotropic (TRISO) particles. These TRISO fuel particles consist of a fissile material (such as U235 in oxide or carbide form) surrounded by a carbon buffer layer, a pyrolytic carbon (PyC) layer, a silicon carbide (SiC) ceramic layer for structural integrity and metallic fission product containment, and an outer PyC layer. The PBR is claimed to be a passively safe design. The commercial development of the first pebble bed reactor was that of the German AVR reactor (German: Arbeitsgemeinschaft Versuchsreaktor) developed during the 1960s. The AVR design was later updated and marketed by a company called HTR. In 1999 the South African electricity company ESKOM obtained the right to access the HTR engineering database that included details of the Siemens/Interatom HTR-Module design. ESKOM worked with HTR on a new design and dubbed it the pebble bed modular reactor (PBMR). The PBMR Co. Ltd. was formed in 1999 and mandated to license and build PBMR reactors. One of the safety considerations which emerged from research is that of metal fission product release from the TRISO fuel particles. Ag110m is a radioactive metallic fission product found to have been released from intact TRISO particles. The release of this Ag isotope is of particular concern because it is highly gamma active and has a half-life of approximately 250 days, resulting in unsafe environments for maintenance workers of PBRs. During the past four decades, many different mechanisms for Ag transport in SiC and release from TRISO particles have been proposed. A promising more recent mechanism suggests that the metallic fission product palladium (Pd) plays a significant role in the transport and release of Ag from intact TRISO particles. In this mechanism Ag transport in irradiated TRISO particle fuel takes place in the presence of the fission product Pd. The Pd reacts with the SiC layer and penetrates the SiC layer along grain boundaries to form a silicide layer which provides a rapid diffusion path for Ag in the SiC. The presence of thin silicide layers in irradiated TRISO particles was subsequently confirmed. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-12
The impact of exchange rates on trade balances in SADC countries
- Authors: Nyahokwe, Olivia
- Date: 2021-12
- Subjects: Foreign exchange rates -- Africa, Southern
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54980 , vital:48575
- Description: This study aims to determine the impact of exchange rates on trade balances in SADC countries. Further, the study also aims to determine the existence of the J-curve phenomena in SADC countries. To achieve the objectives of the study, a panel GMM model and quantile regressions were used as a method of data analysis on data covering the period of 1993 to 2018. Panel GMM model and quantile regression were used to determine the relationships between the real exchange rate (XR), world income (WGDP), as well as gross domestic product (GDP), and trade balance (TB) of SADC countries. The SADC countries used in this study are South Africa, Mauritius, Lesotho, Angola, Malawi, Mozambique, DRC, Madagascar, Namibia, and Botswana. To provide a conceptual framework for the study, a comprehensive theoretical and empirical literature review was undertaken. Within the framework of the theoretical literature review, Magee’s (1973) J-curve phenomena were tested for its relevance and application within SADC countries. Given the main highlights of the empirical literature review, this J-curve phenomenon as well as the impact of trade balances in SADC countries, has not been addressed optimally. The main focus of previous studies in this area within SADC countries has fallen short of explaining the nature and causality of J-curve phenomena. It is in this respect that this study contributes to the regional and international trade discourse. The main findings from the quantile regression analysis in this study suggest that no evidence of "J-curve" in the case of Angola, Namibia, Mozambique, Malawi, and Madagascar. South Africa shows a delayed J curve. Lesotho an inverted J-curve, whilst DRC and Botswana show a sharp V-shape. Contrary to the "J-curve" phenomenon, as explained by the classical textbooks, the findings of the study suggest that the depreciation of Namibia, Mozambique, Angola, Malawi, and Madagascar’s exchange rates produce no J-curve phenomenon, indicating that there is no room for improving these countries’ trade balances through a currency devaluation process. Yet for countries such as South Africa, DRC, Botswana, and Mauritius the findings suggest that the depreciation of these countries’ exchange rates improves the trade balances. Concerning GMM results, the exchange rate and gross domestic product in SADC countries had a positive relationship with the trade balances in SADC countries. Further, the exchange rates also show evidence of a positive relationship with trade balances. On the contrary, the world income (represented as world GDP) has a negative relationship with trade balances in SADC countries. This implies that, as SADC currencies strengthen, the trade balance worsens. This finding presents a serious open macroeconomic challenge in SADC countries, in that the trade balances worsen irrespective of the strengths of the currencies; hence the trade balances in SADC countries have remained negative for prolonged periods. Furthermore, the world economic growth does not necessarily improve the SADC countries' trade balances either, as shown by a negative relation between world income and trade balances in SADC countries. This finding concerning world GDP, suggests that SADC countries lack export diversification and are trapped in primary product exports which, at times, are subjected to low prices. Given the above findings, it is clear that SADC countries will continue to suffer from negative trade balances, which in turn will continue to stifle their growth. To address the continued and persistent trade balances in SADC countries, policymakers should focus on an integrated open macroeconomic strategy. Such a strategy should pay special attention to improving technical skills, research, and development, quality of exports, export diversification, infrastructure; maintain the use of flexible exchange rate regimes, raise the level of productivity; substitute imports of capital equipment and support domestic industries. Furthermore, it is recommended that SADC countries focus on attracting and retaining foreign direct investments. This macroeconomic strategy should not be approached in isolation but as an integrated policy framework. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Nyahokwe, Olivia
- Date: 2021-12
- Subjects: Foreign exchange rates -- Africa, Southern
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54980 , vital:48575
- Description: This study aims to determine the impact of exchange rates on trade balances in SADC countries. Further, the study also aims to determine the existence of the J-curve phenomena in SADC countries. To achieve the objectives of the study, a panel GMM model and quantile regressions were used as a method of data analysis on data covering the period of 1993 to 2018. Panel GMM model and quantile regression were used to determine the relationships between the real exchange rate (XR), world income (WGDP), as well as gross domestic product (GDP), and trade balance (TB) of SADC countries. The SADC countries used in this study are South Africa, Mauritius, Lesotho, Angola, Malawi, Mozambique, DRC, Madagascar, Namibia, and Botswana. To provide a conceptual framework for the study, a comprehensive theoretical and empirical literature review was undertaken. Within the framework of the theoretical literature review, Magee’s (1973) J-curve phenomena were tested for its relevance and application within SADC countries. Given the main highlights of the empirical literature review, this J-curve phenomenon as well as the impact of trade balances in SADC countries, has not been addressed optimally. The main focus of previous studies in this area within SADC countries has fallen short of explaining the nature and causality of J-curve phenomena. It is in this respect that this study contributes to the regional and international trade discourse. The main findings from the quantile regression analysis in this study suggest that no evidence of "J-curve" in the case of Angola, Namibia, Mozambique, Malawi, and Madagascar. South Africa shows a delayed J curve. Lesotho an inverted J-curve, whilst DRC and Botswana show a sharp V-shape. Contrary to the "J-curve" phenomenon, as explained by the classical textbooks, the findings of the study suggest that the depreciation of Namibia, Mozambique, Angola, Malawi, and Madagascar’s exchange rates produce no J-curve phenomenon, indicating that there is no room for improving these countries’ trade balances through a currency devaluation process. Yet for countries such as South Africa, DRC, Botswana, and Mauritius the findings suggest that the depreciation of these countries’ exchange rates improves the trade balances. Concerning GMM results, the exchange rate and gross domestic product in SADC countries had a positive relationship with the trade balances in SADC countries. Further, the exchange rates also show evidence of a positive relationship with trade balances. On the contrary, the world income (represented as world GDP) has a negative relationship with trade balances in SADC countries. This implies that, as SADC currencies strengthen, the trade balance worsens. This finding presents a serious open macroeconomic challenge in SADC countries, in that the trade balances worsen irrespective of the strengths of the currencies; hence the trade balances in SADC countries have remained negative for prolonged periods. Furthermore, the world economic growth does not necessarily improve the SADC countries' trade balances either, as shown by a negative relation between world income and trade balances in SADC countries. This finding concerning world GDP, suggests that SADC countries lack export diversification and are trapped in primary product exports which, at times, are subjected to low prices. Given the above findings, it is clear that SADC countries will continue to suffer from negative trade balances, which in turn will continue to stifle their growth. To address the continued and persistent trade balances in SADC countries, policymakers should focus on an integrated open macroeconomic strategy. Such a strategy should pay special attention to improving technical skills, research, and development, quality of exports, export diversification, infrastructure; maintain the use of flexible exchange rate regimes, raise the level of productivity; substitute imports of capital equipment and support domestic industries. Furthermore, it is recommended that SADC countries focus on attracting and retaining foreign direct investments. This macroeconomic strategy should not be approached in isolation but as an integrated policy framework. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
The impact of public-private partnerships on Zambia's economic growth and economic development
- Authors: Banda, Zondwayo
- Date: 2021-12
- Subjects: Public-private sector cooperation -- Economic aspects -- Zambia , Capital investments -- Zambia
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53711 , vital:45717
- Description: The current globalisation is pressuring both developed and developing nations to fast-track change and development with the intention of improving the living standards of the people. With limited financial resources and razor-thin budgets, national governments now turn to private sector to collaborate in financing infrastructure that is critical for economic and social growth. Despite the increase in public-private partnership (PPP) investments in Zambia, there have not been any formal assessments of the PPPs to evaluate their impact on Zambia’s economic growth and economic development. This research evaluates the impact of PPPs on Zambia’s economic growth (proxied by gross domestic product [GDP]) and economic development (proxied by unemployment, household consumption and Gini coefficient). The research adopts the auto-regressive distributed lag (ARDL) model as the time series approach to investigating the relationship between PPPs and gross domestic product (GDP) as well as the economic development. The ARDL model was also used for evaluating the impact of PPPs on Zambia’s GDP and economic development for the 18 years from 2000 to 2017. Thirty-two self-administered questionnaires (SAQs) were received and seven interviews were conducted with key research informants. The key research informants for both the SAQs and interviews were purposively selected to provide insights into the impact of PPPs on Zambia’s GDP and economic development. The ARDL model results have established that there is a stable and long-run relationship between PPPs and Zambia’s economic growth. Similarly, insights obtained from SAQs and interviews show that PPPs are not only important in Zambia but are related to economic growth. Therefore, Zambia should continue harnessing and promoting viable PPPs to enhance its economic growth. This also entails that private sector should continue providing financial resources and expertise to spur Zambia’s economic activities. Through the use of F-statistics, the ARDL model results reveal that PPPs are cointegrated with household consumption, unemployment and the Gini coefficient. As such the ARDL model results confirm the existence of a stable and long-run relationship between PPPs and economic development. The insights obtained from SAQs and interviews highlight that PPPs in Zambia are important. Furthermore, the insights from the key informants suggest that there is a relationship between PPPs and economic development. Hence, Zambia’s continued harnessing of PPP investments is pivotal in its quest to improve the living standards of ordinary people. Using long-run coefficients, the ARDL model results demonstrate that PPPs impact Zambia’s GDP positively. PPPs have spurred economic activities through the creation of businesses. Similarly, the insights from key informants demonstrate that PPPs relate positively to GDP. The overall results suggest that PPPs impact GDP positively. As PPPs impact GDP positively, the government of the Republic of Zambia should continue harnessing the PPP investments as a pro-poor model that bolsters economic activities and fosters economic growth. The harnessing of PPP investments means that the Zambian government, through its Finance Ministry, should scale up investments in PPPs and widen the scope of sectors for PPP investments so as to achieve inclusive and faster economic growth. The ARDL model results show that PPPs affect economic development positively through increases in household consumption and reductions in unemployment rates. However, the data on the Gini coefficient reveal that PPPs have a negative impact on economic development, as PPPs contributed to the rise in the Gini coefficient for the period under review. The key informants’ insights reveal that PPPs affect economic development positively by increasing household consumption and reducing the unemployment rate and the Gini coefficient. The mixed results on the Gini coefficient data representing income inequalities could be attributed to low-quality jobs and poor employment conditions created through PPP projects. Overall, the study’s results show that PPPs have a positive impact on economic development, as they have created businesses and employment thereby contributing to the increase in household consumption. Consequently, the Zambian government should continue engaging the private sector in PPP projects. The government should also scale up PPP investments and widen their scope to include other sectors of the economy as PPP present a viable option for the continued spurring of economic activities, the creation of employment and improvements in household consumption. The research results suggest that PPPs play an important role in improving economic growth and economic development thereby supporting the original intention of the PPP strategy for both developed and developing countries. The research strongly recommends the scaling up of investments in PPPs to contribute to the reduction or eradication of poverty in Zambia – and in other developing countries in Africa. The scaling up of PPP investments has implications that require attention from policy makers. There is a need for the development and dissemination of PPP policy guidelines to improve the design, development and implementation of PPPs in Zambia. The scaling up of investments in PPPs also requires changes to be made to the current PPP Act to widen the scope of PPP investments so as to include additional economic sectors to increase GDP, improve household consumption, create new jobs and reduce the Gini coefficient in Zambia. As PPP processes are complex, increased investments in PPPs will require further training of the PPP department’s staff, the contracting authorities and the private sector to improve their regulatory and technical capacity in the design, development and implementation of PPP projects. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Banda, Zondwayo
- Date: 2021-12
- Subjects: Public-private sector cooperation -- Economic aspects -- Zambia , Capital investments -- Zambia
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53711 , vital:45717
- Description: The current globalisation is pressuring both developed and developing nations to fast-track change and development with the intention of improving the living standards of the people. With limited financial resources and razor-thin budgets, national governments now turn to private sector to collaborate in financing infrastructure that is critical for economic and social growth. Despite the increase in public-private partnership (PPP) investments in Zambia, there have not been any formal assessments of the PPPs to evaluate their impact on Zambia’s economic growth and economic development. This research evaluates the impact of PPPs on Zambia’s economic growth (proxied by gross domestic product [GDP]) and economic development (proxied by unemployment, household consumption and Gini coefficient). The research adopts the auto-regressive distributed lag (ARDL) model as the time series approach to investigating the relationship between PPPs and gross domestic product (GDP) as well as the economic development. The ARDL model was also used for evaluating the impact of PPPs on Zambia’s GDP and economic development for the 18 years from 2000 to 2017. Thirty-two self-administered questionnaires (SAQs) were received and seven interviews were conducted with key research informants. The key research informants for both the SAQs and interviews were purposively selected to provide insights into the impact of PPPs on Zambia’s GDP and economic development. The ARDL model results have established that there is a stable and long-run relationship between PPPs and Zambia’s economic growth. Similarly, insights obtained from SAQs and interviews show that PPPs are not only important in Zambia but are related to economic growth. Therefore, Zambia should continue harnessing and promoting viable PPPs to enhance its economic growth. This also entails that private sector should continue providing financial resources and expertise to spur Zambia’s economic activities. Through the use of F-statistics, the ARDL model results reveal that PPPs are cointegrated with household consumption, unemployment and the Gini coefficient. As such the ARDL model results confirm the existence of a stable and long-run relationship between PPPs and economic development. The insights obtained from SAQs and interviews highlight that PPPs in Zambia are important. Furthermore, the insights from the key informants suggest that there is a relationship between PPPs and economic development. Hence, Zambia’s continued harnessing of PPP investments is pivotal in its quest to improve the living standards of ordinary people. Using long-run coefficients, the ARDL model results demonstrate that PPPs impact Zambia’s GDP positively. PPPs have spurred economic activities through the creation of businesses. Similarly, the insights from key informants demonstrate that PPPs relate positively to GDP. The overall results suggest that PPPs impact GDP positively. As PPPs impact GDP positively, the government of the Republic of Zambia should continue harnessing the PPP investments as a pro-poor model that bolsters economic activities and fosters economic growth. The harnessing of PPP investments means that the Zambian government, through its Finance Ministry, should scale up investments in PPPs and widen the scope of sectors for PPP investments so as to achieve inclusive and faster economic growth. The ARDL model results show that PPPs affect economic development positively through increases in household consumption and reductions in unemployment rates. However, the data on the Gini coefficient reveal that PPPs have a negative impact on economic development, as PPPs contributed to the rise in the Gini coefficient for the period under review. The key informants’ insights reveal that PPPs affect economic development positively by increasing household consumption and reducing the unemployment rate and the Gini coefficient. The mixed results on the Gini coefficient data representing income inequalities could be attributed to low-quality jobs and poor employment conditions created through PPP projects. Overall, the study’s results show that PPPs have a positive impact on economic development, as they have created businesses and employment thereby contributing to the increase in household consumption. Consequently, the Zambian government should continue engaging the private sector in PPP projects. The government should also scale up PPP investments and widen their scope to include other sectors of the economy as PPP present a viable option for the continued spurring of economic activities, the creation of employment and improvements in household consumption. The research results suggest that PPPs play an important role in improving economic growth and economic development thereby supporting the original intention of the PPP strategy for both developed and developing countries. The research strongly recommends the scaling up of investments in PPPs to contribute to the reduction or eradication of poverty in Zambia – and in other developing countries in Africa. The scaling up of PPP investments has implications that require attention from policy makers. There is a need for the development and dissemination of PPP policy guidelines to improve the design, development and implementation of PPPs in Zambia. The scaling up of investments in PPPs also requires changes to be made to the current PPP Act to widen the scope of PPP investments so as to include additional economic sectors to increase GDP, improve household consumption, create new jobs and reduce the Gini coefficient in Zambia. As PPP processes are complex, increased investments in PPPs will require further training of the PPP department’s staff, the contracting authorities and the private sector to improve their regulatory and technical capacity in the design, development and implementation of PPP projects. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
The perceived success of selected therapy programmes on mitigating the relapses of patients with substance use disorders in Gauteng, South Africa
- Authors: Chatikobo, Nyasha
- Date: 2021-12
- Subjects: Substance abuse -- Treatment , Psychotherapy
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21860 , vital:51833
- Description: This study aimed at evaluating the perceived success of selected therapy programs in mitigating the relapse of patients with substance use disorders at two selected rehabilitation centres in the Gauteng province of South Africa. The methodology used for this study was a mixed-method approach, although more emphasis was on qualitative methods. The qualitative data was collected from four focus groups, and 6 in-depth interviews from key informants. The quantitative data was collected using questionnaires that were completed by 100 primary carers of discharged patients from the selected drug treatment centres. The main findings of the study showed that substance use disorder is a complex disease that requires several factors to be considered to avoid any relapses. The study showed that rehabilitation centres are hugely contributing to efforts of solving substance use in Gauteng and South Africa as a whole. These rehabilitation centres offered various treatment programs to individuals who suffer from substance use disorders. The findings also indicated that the selected therapy programmes at the rehabilitation centres met their objectives. However, some of the programmes were successful in mitigating the relapses of patients recovering from addiction to a lesser extent. The study also found out that the number of individuals who relapse is relatively high, however, the study did not dive into the depth of the causing factors. This may be room for future studies. Findings further indicated that the rehabilitation centres lacked in the application of a holistic approach to addiction treatment, even though there were several treatment programs offered. The issue of exorbitant residential fees in private rehabilitation facilities was also highlighted by the data collected. The research concluded by suggesting several recommendations such as research to improve policy for substance use with a focus on the human rights approach to the drug problem. Recommendations to the Department of Social Development which is responsible for the rehabilitation centres in South Africa. To ensure that all centres that are registered for offering treatment for substance use disorder be mandated to use a comprehensive multidisciplinary approach, diversifying and individualizing treatments for better outcomes. Lastly, recommendations were suggested to the social work practice, to support rehabilitation facilities by providing continuous specialized training to their social workers. Recommendations to social work training and curriculum to include in-depth substance use disorders during education, training, and field placements, for best practice amongst new social work practitioners placed in rehabilitation centres. , Thesis (PhD) -- Faculty of Social Sciences and Humanities, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Chatikobo, Nyasha
- Date: 2021-12
- Subjects: Substance abuse -- Treatment , Psychotherapy
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21860 , vital:51833
- Description: This study aimed at evaluating the perceived success of selected therapy programs in mitigating the relapse of patients with substance use disorders at two selected rehabilitation centres in the Gauteng province of South Africa. The methodology used for this study was a mixed-method approach, although more emphasis was on qualitative methods. The qualitative data was collected from four focus groups, and 6 in-depth interviews from key informants. The quantitative data was collected using questionnaires that were completed by 100 primary carers of discharged patients from the selected drug treatment centres. The main findings of the study showed that substance use disorder is a complex disease that requires several factors to be considered to avoid any relapses. The study showed that rehabilitation centres are hugely contributing to efforts of solving substance use in Gauteng and South Africa as a whole. These rehabilitation centres offered various treatment programs to individuals who suffer from substance use disorders. The findings also indicated that the selected therapy programmes at the rehabilitation centres met their objectives. However, some of the programmes were successful in mitigating the relapses of patients recovering from addiction to a lesser extent. The study also found out that the number of individuals who relapse is relatively high, however, the study did not dive into the depth of the causing factors. This may be room for future studies. Findings further indicated that the rehabilitation centres lacked in the application of a holistic approach to addiction treatment, even though there were several treatment programs offered. The issue of exorbitant residential fees in private rehabilitation facilities was also highlighted by the data collected. The research concluded by suggesting several recommendations such as research to improve policy for substance use with a focus on the human rights approach to the drug problem. Recommendations to the Department of Social Development which is responsible for the rehabilitation centres in South Africa. To ensure that all centres that are registered for offering treatment for substance use disorder be mandated to use a comprehensive multidisciplinary approach, diversifying and individualizing treatments for better outcomes. Lastly, recommendations were suggested to the social work practice, to support rehabilitation facilities by providing continuous specialized training to their social workers. Recommendations to social work training and curriculum to include in-depth substance use disorders during education, training, and field placements, for best practice amongst new social work practitioners placed in rehabilitation centres. , Thesis (PhD) -- Faculty of Social Sciences and Humanities, 2021
- Full Text:
- Date Issued: 2021-12
The synthesis, empirical and theoretical studies of various (N→B) diarylborinate esters
- Authors: Manana, Pholani Sakhile
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53869 , vital:46027
- Description: A series of core-functionalized borinic acids was synthesized from Grignard reagents and tributylborate and reacted with ethanolamine, amino acids, 2-pyridylmethanol as well as 2-(ethyl amino ethanol). Among the borinic acids synthesized were the ones bearing: para-(2, 15, 16, 22, 27)-methyl, (3, 20, 25)-chloro, (4, 23, 26)-fluoro, (5)-methoxy; meta-(7, 17)-methyl, (9)-fluoro; ortho-(6)-methyl, (8)-chloro, (10, 18, 19)-methoxy substituents on their respective aromatic systems. All compounds obtained by condensation of the borinic acids with the aforementioned nitrogen-containing substrates were characterized structurally by means of diffraction studies based on single crystals and found to constitute chelate esters/amides featuring covalent B-O and dative N→B bonds. The chelate compounds researched in this study could be classified into four families and represent the compounds: ethanol amine: (1) 2,2-diphenyl-1,3,2-oxazaborolidines, (2) 2,2-bis(p-tolyl)-1,3,2-oxazaborolidines, (3) 2,2-bis(p-chlorophenyl)-1,3,2-oxazaborolidines, (4) 2,2-bis(p-fluorophenyl)-1,3,2-oxazaborolidines, (5) 2,2-bis(p-methoxyphenyl)-1,3,2-oxazaborolidines, (6) 2,2-bis(o-tolyl)-1,3,2-oxazaborolidines, (7) 2,2-bis(m-tolyl)-1,3,2-oxazaborolidines, (8) 2,2-bis(o-chlorophenyl)-1,3,2-oxazaborolidines, (9) 2,2-bis(m-fluorophenyl)-1,3,2-oxazaborolidines, (10) 2,2-bis(o-methoxyphenyl)-1,3,2-oxazaborolidines. α-amino acids : (14) 4-methyl-2,2-diphenyl-1,3,2-oxazaborolidin-5-ones, (15) 2,2-bis(p-tolyl)-1,3,2-oxazaborolidin-5-ones, (16) 4-methyl-2,2-bis(p-tolyl)-1,3,2-oxazaborolidin-5-ones, (17) 4-isopropyl-2,2-bis(m-tolyl)-1,3,2-oxazaborolidin-5-ones, (18) 4-methyl-2,2-bis(o-methoxyphenyl)-1,3,2- oxazaborolidin-5-ones, (19) 4-acetamidyl-2,2-bis(o-methoxyphenyl)-1,3,2- oxazaborolidin-5-ones, (20) 4-phenylethane-2,2-bis(p-chlorophenyl)-1,3,2 oxazaborolidin-5-ones. 2-pyridylmethanol: (21) 1,3-hydroxypyridyl-2,2-diphenyl 1,3,2-oxazaborolidines, (22) 1,3-hydroxypyridyl-2,2-bis(p-tolyl)-1,3,2-oxazaborolidines, (23) 1,3-hydroxypyridyl-2,2-bis(p-fluorophenyl)-1,3,2-oxazaborolidines 2-(ethyl amino ethanol): (24) 3-ethyl-2,2-diphenyl-1,3,2-oxazaborolidines, (25) 3-ethyl-2,2-bis(p-chlorophenyl)-1,3,2-oxazaborolidines, (26) 3-ethyl-2,2-bis(p-fluorophenyl)-1,3,2-oxazaborolidines, (27) 3-ethyl-2,2-bis(p-tolyl)-1,3,2-oxazaborolidines. Apart from structural studies in the solid state, the compounds were also characterized by means of multinuclear NMR spectroscopy (1H, 11B, 13C) as well as UV/vis and FTIR. The typical 11B resonances were found in the range of (4-10 ppm). A series of characteristic metrical parameters for the compounds in the solid state as well as typical NMR shifts for the chelate target molecules was established that allowed for the determination of the coordination induced shift. The carbon atom bonded to the oxygen atom shifted upfield, while the carbon atom bonded to the nitrogen atom shifted downfield. Factors mentioned in the literature that has an influence on the hydrolytic stability on the heterocyclic borinate motif have been taken into consideration and verified for the systems researched in this study. The substitution at the nitrogen atom with one ethyl group caused the greatest increases in the N→B bond length (27) 1.714 Å, due to the increase in the nitrogen Lewis basicity, making it the least hydrolytically stable, these include compounds (24-26). Furthermore, DFT calculations were performed by employing Becke’s three parameter hybrid exchange functional with Lee–Yang–Parr functional (B3LYP) method using the Gaussian 16 program package (Rev. B01) employing the basis set 6-311++G(d,p), to corroborate and correlate the experimental findings, which gave a general R-squared value of 0.9978 for calculated vs experimental 13C chemical shifts. Thermal properties are recorded for select compounds, indicating the ΔH and the melting points. , Thesis (PhD) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Manana, Pholani Sakhile
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53869 , vital:46027
- Description: A series of core-functionalized borinic acids was synthesized from Grignard reagents and tributylborate and reacted with ethanolamine, amino acids, 2-pyridylmethanol as well as 2-(ethyl amino ethanol). Among the borinic acids synthesized were the ones bearing: para-(2, 15, 16, 22, 27)-methyl, (3, 20, 25)-chloro, (4, 23, 26)-fluoro, (5)-methoxy; meta-(7, 17)-methyl, (9)-fluoro; ortho-(6)-methyl, (8)-chloro, (10, 18, 19)-methoxy substituents on their respective aromatic systems. All compounds obtained by condensation of the borinic acids with the aforementioned nitrogen-containing substrates were characterized structurally by means of diffraction studies based on single crystals and found to constitute chelate esters/amides featuring covalent B-O and dative N→B bonds. The chelate compounds researched in this study could be classified into four families and represent the compounds: ethanol amine: (1) 2,2-diphenyl-1,3,2-oxazaborolidines, (2) 2,2-bis(p-tolyl)-1,3,2-oxazaborolidines, (3) 2,2-bis(p-chlorophenyl)-1,3,2-oxazaborolidines, (4) 2,2-bis(p-fluorophenyl)-1,3,2-oxazaborolidines, (5) 2,2-bis(p-methoxyphenyl)-1,3,2-oxazaborolidines, (6) 2,2-bis(o-tolyl)-1,3,2-oxazaborolidines, (7) 2,2-bis(m-tolyl)-1,3,2-oxazaborolidines, (8) 2,2-bis(o-chlorophenyl)-1,3,2-oxazaborolidines, (9) 2,2-bis(m-fluorophenyl)-1,3,2-oxazaborolidines, (10) 2,2-bis(o-methoxyphenyl)-1,3,2-oxazaborolidines. α-amino acids : (14) 4-methyl-2,2-diphenyl-1,3,2-oxazaborolidin-5-ones, (15) 2,2-bis(p-tolyl)-1,3,2-oxazaborolidin-5-ones, (16) 4-methyl-2,2-bis(p-tolyl)-1,3,2-oxazaborolidin-5-ones, (17) 4-isopropyl-2,2-bis(m-tolyl)-1,3,2-oxazaborolidin-5-ones, (18) 4-methyl-2,2-bis(o-methoxyphenyl)-1,3,2- oxazaborolidin-5-ones, (19) 4-acetamidyl-2,2-bis(o-methoxyphenyl)-1,3,2- oxazaborolidin-5-ones, (20) 4-phenylethane-2,2-bis(p-chlorophenyl)-1,3,2 oxazaborolidin-5-ones. 2-pyridylmethanol: (21) 1,3-hydroxypyridyl-2,2-diphenyl 1,3,2-oxazaborolidines, (22) 1,3-hydroxypyridyl-2,2-bis(p-tolyl)-1,3,2-oxazaborolidines, (23) 1,3-hydroxypyridyl-2,2-bis(p-fluorophenyl)-1,3,2-oxazaborolidines 2-(ethyl amino ethanol): (24) 3-ethyl-2,2-diphenyl-1,3,2-oxazaborolidines, (25) 3-ethyl-2,2-bis(p-chlorophenyl)-1,3,2-oxazaborolidines, (26) 3-ethyl-2,2-bis(p-fluorophenyl)-1,3,2-oxazaborolidines, (27) 3-ethyl-2,2-bis(p-tolyl)-1,3,2-oxazaborolidines. Apart from structural studies in the solid state, the compounds were also characterized by means of multinuclear NMR spectroscopy (1H, 11B, 13C) as well as UV/vis and FTIR. The typical 11B resonances were found in the range of (4-10 ppm). A series of characteristic metrical parameters for the compounds in the solid state as well as typical NMR shifts for the chelate target molecules was established that allowed for the determination of the coordination induced shift. The carbon atom bonded to the oxygen atom shifted upfield, while the carbon atom bonded to the nitrogen atom shifted downfield. Factors mentioned in the literature that has an influence on the hydrolytic stability on the heterocyclic borinate motif have been taken into consideration and verified for the systems researched in this study. The substitution at the nitrogen atom with one ethyl group caused the greatest increases in the N→B bond length (27) 1.714 Å, due to the increase in the nitrogen Lewis basicity, making it the least hydrolytically stable, these include compounds (24-26). Furthermore, DFT calculations were performed by employing Becke’s three parameter hybrid exchange functional with Lee–Yang–Parr functional (B3LYP) method using the Gaussian 16 program package (Rev. B01) employing the basis set 6-311++G(d,p), to corroborate and correlate the experimental findings, which gave a general R-squared value of 0.9978 for calculated vs experimental 13C chemical shifts. Thermal properties are recorded for select compounds, indicating the ΔH and the melting points. , Thesis (PhD) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2021
- Full Text:
- Date Issued: 2021-12
The work In fishing Convention as an Instrument to combat forced labour on fishing vessels: A South African perspective
- Authors: Hlazo,Nonhlanhla
- Date: 2021-12
- Subjects: Fishery law and legislation , Forced labor – South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/55877 , vital:54396
- Description: This thesis sets to analyse the provisions of the Work in Fishing Convention (WFC), No. 188 of 2007 and the South African Merchant Shipping Act 57 of 1951 (MSA). This analysis focuses on the regulation of the legal aspects of common practices that result in forced labour and provisions which serve as a deterrence to potential “threats of punishment” used to perpetuate forced labour on fishing vessels. The aim of this analysis is to determine whether South Africa complies with its duties in terms of the WFC. In the process of this analysis, this thesis aims to identify gaps in the MSA that allow for this appalling practice to continue and provide recommendations for amendments to the Merchant Shipping Bill (MSB) based on the identified discrepancies between the MSA and the WFC. Chapter one is an introductory chapter which explains that two elements must be present for a situation to amount to forced labour, namely “involuntariness” and the “threat of penalty.” Chapter two examines South Africa’ s jurisdiction to criminalise, investigate and try fisheries crimes on fishing vessels in different maritime zones. The aim of this examination is to determine whether South Africa has the jurisdiction to criminalise forced labour on fishing vessels in different maritime zones. It is concluded that, while South Africa’s enforcement and adjudicative jurisdiction may be limited in some maritime zones, South Africa has the jurisdiction to criminalise forced labour as a coastal State, flag State, personal State and a port State. Chapter three focuses on global and regional legal instruments to combat forced labour and establishes the significant role of the WFC in combatting forced labour on fishing vessels specifically. It is further concluded that, provided the provisions of the proposed MSB do not change, South Africa currently complies with its duties in accordance with the WFC and goes beyond what is required in some respects. However, South Africa does not comply with its obligation to regulate the recruitment and placement agencies for fishers. This leaves fishers in South Africa vulnerable to coercion by unscrupulous recruitment agencies. It is suggested that the provisions of the WFC relating to the recruitment and placement of fishers can be given effect in South Africa by either amending the current Seafarer Recruitment and Placement Regulations to apply to fishers or by drafting new Merchant Shipping (Fisher Recruitment and Placement) Regulations, which give effect to the WFC in line with the existing Seafarer Recruitment and Placement Regulations and promulgating them in terms of the MSA or its successor. , Thesis (LLD) -- Faculty of Law, School Public Law, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Hlazo,Nonhlanhla
- Date: 2021-12
- Subjects: Fishery law and legislation , Forced labor – South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/55877 , vital:54396
- Description: This thesis sets to analyse the provisions of the Work in Fishing Convention (WFC), No. 188 of 2007 and the South African Merchant Shipping Act 57 of 1951 (MSA). This analysis focuses on the regulation of the legal aspects of common practices that result in forced labour and provisions which serve as a deterrence to potential “threats of punishment” used to perpetuate forced labour on fishing vessels. The aim of this analysis is to determine whether South Africa complies with its duties in terms of the WFC. In the process of this analysis, this thesis aims to identify gaps in the MSA that allow for this appalling practice to continue and provide recommendations for amendments to the Merchant Shipping Bill (MSB) based on the identified discrepancies between the MSA and the WFC. Chapter one is an introductory chapter which explains that two elements must be present for a situation to amount to forced labour, namely “involuntariness” and the “threat of penalty.” Chapter two examines South Africa’ s jurisdiction to criminalise, investigate and try fisheries crimes on fishing vessels in different maritime zones. The aim of this examination is to determine whether South Africa has the jurisdiction to criminalise forced labour on fishing vessels in different maritime zones. It is concluded that, while South Africa’s enforcement and adjudicative jurisdiction may be limited in some maritime zones, South Africa has the jurisdiction to criminalise forced labour as a coastal State, flag State, personal State and a port State. Chapter three focuses on global and regional legal instruments to combat forced labour and establishes the significant role of the WFC in combatting forced labour on fishing vessels specifically. It is further concluded that, provided the provisions of the proposed MSB do not change, South Africa currently complies with its duties in accordance with the WFC and goes beyond what is required in some respects. However, South Africa does not comply with its obligation to regulate the recruitment and placement agencies for fishers. This leaves fishers in South Africa vulnerable to coercion by unscrupulous recruitment agencies. It is suggested that the provisions of the WFC relating to the recruitment and placement of fishers can be given effect in South Africa by either amending the current Seafarer Recruitment and Placement Regulations to apply to fishers or by drafting new Merchant Shipping (Fisher Recruitment and Placement) Regulations, which give effect to the WFC in line with the existing Seafarer Recruitment and Placement Regulations and promulgating them in terms of the MSA or its successor. , Thesis (LLD) -- Faculty of Law, School Public Law, 2021
- Full Text:
- Date Issued: 2021-12
Ultra-high precision machining of rapidly solidified aluminium (RSA) alloys for optics
- Authors: Odedeyi, Peter Babatunde
- Date: 2021-12
- Subjects: Mechatronics Surface roughness -- Measurement
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/55921 , vital:54400
- Description: The advancement of ultra-precision is one of the most adaptable machining processes in the manufacturing of very complex and high-quality surface structures for optics, industrial, medical, aerospace and communication applications. Studies have shown that single-point diamond turning has an outstanding ability to machine high-quality optical components at a nanometric scale. However, in a responsive cutting process, the nanometric machinability of these optical components can easily be affected by several factors. The call for increasing needs of optical systems has recently led to the development of newly modified aluminium grades of non-ferrous alloys characterized by finer microstructures, defined mechanical and physical properties. To date, there has been a lack of sufficient research into these new aluminium alloys. In modern ultra-precision machining, the high demands for smart and inexpensive cutting tools are becoming more relevant in recent precision machines. In monitoring and predicting high-quality surface, cutting forces in single point diamond turning are believed to be as critical as other machining processes due to their potential effects on the quality of surface roughness. Undermining such an important factor is a compromise between the machining process's efficiency and the increased cost of production. Therefore, a comprehensive scientific understanding of the Nano-cutting mechanics is critical, particularly on modelling and analysis of cutting force, surface roughness, chip vii formation, acoustic emission, material removal rates, and molecular dynamic simulation of the rapidly solidified aluminium alloys to bridge the gap between fundamentals and industrial-scale application. The study is divided into three essential sections. First, the development of a force sensor. Secondly, investigation of the effect of cutting parameters (i.e., cutting speed, feed rate, and cutting depth) on cutting force, acoustic emission (AE), material removal rate (MRR), chip formation, Nose radius, and surface roughness (Ra), which play a leading role in the determination of machine productivity and efficiency of single-point diamond turning of rapidly solidified aluminium alloys. Thirdly, a 3-D molecular dynamic (MD) simulation of RSA 6061 is also carried out to further understand the nanometric mechanism and characterization of the alloy. The experiment was mainly conducted using Precitech Nanoform ultra-grind 250 lathe machines on three different advanced optical aluminium alloys materials; these are RSA 443, RSA 905, and RSA 6061. , Thesis (PhD) -- Faculty of Engineering, the Built Environment and Information Technology, School of Engineering, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Odedeyi, Peter Babatunde
- Date: 2021-12
- Subjects: Mechatronics Surface roughness -- Measurement
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/55921 , vital:54400
- Description: The advancement of ultra-precision is one of the most adaptable machining processes in the manufacturing of very complex and high-quality surface structures for optics, industrial, medical, aerospace and communication applications. Studies have shown that single-point diamond turning has an outstanding ability to machine high-quality optical components at a nanometric scale. However, in a responsive cutting process, the nanometric machinability of these optical components can easily be affected by several factors. The call for increasing needs of optical systems has recently led to the development of newly modified aluminium grades of non-ferrous alloys characterized by finer microstructures, defined mechanical and physical properties. To date, there has been a lack of sufficient research into these new aluminium alloys. In modern ultra-precision machining, the high demands for smart and inexpensive cutting tools are becoming more relevant in recent precision machines. In monitoring and predicting high-quality surface, cutting forces in single point diamond turning are believed to be as critical as other machining processes due to their potential effects on the quality of surface roughness. Undermining such an important factor is a compromise between the machining process's efficiency and the increased cost of production. Therefore, a comprehensive scientific understanding of the Nano-cutting mechanics is critical, particularly on modelling and analysis of cutting force, surface roughness, chip vii formation, acoustic emission, material removal rates, and molecular dynamic simulation of the rapidly solidified aluminium alloys to bridge the gap between fundamentals and industrial-scale application. The study is divided into three essential sections. First, the development of a force sensor. Secondly, investigation of the effect of cutting parameters (i.e., cutting speed, feed rate, and cutting depth) on cutting force, acoustic emission (AE), material removal rate (MRR), chip formation, Nose radius, and surface roughness (Ra), which play a leading role in the determination of machine productivity and efficiency of single-point diamond turning of rapidly solidified aluminium alloys. Thirdly, a 3-D molecular dynamic (MD) simulation of RSA 6061 is also carried out to further understand the nanometric mechanism and characterization of the alloy. The experiment was mainly conducted using Precitech Nanoform ultra-grind 250 lathe machines on three different advanced optical aluminium alloys materials; these are RSA 443, RSA 905, and RSA 6061. , Thesis (PhD) -- Faculty of Engineering, the Built Environment and Information Technology, School of Engineering, 2021
- Full Text:
- Date Issued: 2021-12