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Item A 5 year review of paediatric maxillofacial & oral surgery procedures performed at the Wits oral health centre(2021) Vally, M.Aim: To review paediatric maxillofacial and oral surgery procedures performed at the Wits Oral Health Centre (WOHC) over a 5-year-period. Materials and Methods: This was a retrospective record review study at WOHC, University of the Witwatersrand, Johannesburg. Records of paediatric patients who had treatment from 2013 to 2017 were included in the study. Data collected included the age of patients, gender, distribution of scope and type of treatment. Data was analysed and results presented as frequencies and percentages. Results: A total of 694 paediatric patients presented for treatment during the study period. There were more males (54.2%) than females (45.8%), and the majority of patients were in the 11-17-year age category. Oral surgery, treatment of pathoses and management of trauma were the most common procedures at 34%, 29% and 20.5% respectively. There was a statistically significant difference between the number of surgical procedures carried out under general anaesthetic and that under local anaesthetic (p < 0.001). The removal of third molars was more common than other oral surgical procedures. A high occurrence of paediatric trauma was observed in males aged between 11-17 years. Mandibular fractures, followed by dentoalveolar fractures, were the most common fracture types. The most commonly diagnosed pathological conditions were odontogenic cysts (23.15%), benign odontogenic tumours (22.31%) and fibro-osseous lesions (19.02%). Mucous extravasation cyst was the most common salivary gland pathology. Conclusion: Most oral and maxillofacial surgical procedures in paediatric patients are performed in the 11-17-year category. The removal of impacted 3 rd molars was the most common surgical procedure and the management of ameloblastomas appears to be the most common odontogenic tumour in this age group. Future studies are required to provide insight into the reasons, patterns and distribution of paediatric maxillofacial surgery. Results from such studies, especially prospective ones, will form the basis for design of educational campaigns and preventive strategies aimed particularly at the 11-17-year age groupItem A legal analysis of the complexity of race and gender disadvantage in terms of the Employement Equity Act in South Africa(2019) Mushariwa, Muriel TapiwaCenturies of colonialism and Apartheid created a legacy of inequality in South Africa that the democratic Constitution, 1996, seeks to address. The constitutional mandate in section 9 of this Constitution, enacted through the Employment Equity Act 55 of 1998 (EEA), requires designated employers in the public and private sphere to address the inequality in the workplace through the application of affirmative action. The EEA identifies the beneficiaries of affirmative action policies as black people, women and persons with disabilities. It is clear that these constitute three distinct groups, but that it is also possible for an individual to belong to more than one of these collectives. For example, black women fall within two designated groups on the basis of race and gender, and this dual disadvantage creates a multi-layered, unique and complex type of inequality. The main aim of the EEA is to create a representative workforce, and designated employers have a duty to break down the barriers that prevent members of the designated groups from entering the workplace. Once employed, employers need to assist members of the designated groups to progress in the workplace. However, having a representative workforce does not translate into a transformed workforce. It will be argued in this thesis that a transformed workplace is representative, but also requires the breakdown of institutional norms, processes and structures that prevent the progression of members of the designated groups. The question to be asked is whether affirmative action, in its current form, is able to transform the workplace. To answer this question, it is vital that consideration be given, firstly, to the type of substantive equality that is to be achieved in the application of affirmative action. It will be shown that the aim should be a transformative substantive equality of outcome. Focus will be placed on the fact that individuals who fall within the designated groups are not equally placed in terms of their experience of disadvantage. It is submitted that consideration of differing experiences of disadvantage needs to be taken into account so as to avoid the creation of an elite middle class black, and possibly male, group, which benefits from affirmative action to the exclusion of others, thus hampering the achievement of equality in the workplace. This thesis will show that a transformative form of substantive equality of outcome needs to be applied to affirmative action in the workplace. This transformative form of substantive equality includes a situation sensitive approach to the implementation of affirmative action in the workplace. A situation sensitive approach will apply affirmative action strictly on a case by case basis with regard to the demographic profile of the specific workforce, and the employment equity policy of the particular workplace. A one size fits all approach cannot deal with the complexity of disadvantage that needs to be addressed. It will be argued that, besides a situation sensitive approach to race, gender and disability, the issues of social, political, economic and educational disadvantage are factors that should be given consideration in identifying the true beneficiaries of affirmative action. To further illustrate this point, particular attention will be given to women within the designated groups, in order to unpack the nature of disadvantage they experienced in the workplace. Two case studies, focusing on women in male dominated professions, the legal profession and the mining industry, will be used to illustrate this point. This thesis will show that ultimately, the goal of affirmative action must be seen to be to change the workplace by breaking down both the visible and invisible barriers of equality and, in doing so, create an environment where, constitutional values of equality, human dignity and freedom are truly recognized and protected.Item A model for integrated tourism infrastructure planning in the South African public sector(2024) Chettiar, ShamillaInfrastructure supports competitiveness, productivity and economic growth. While planning is critical for co-ordination and delivery of infrastructure, integrated infrastructure planning models remain elusive. Integrated infrastructure planning is especially important to derive maximum benefits from limited public sector funding. This research focussed on infrastructure planning in the tourism context. Within the complex South African public sector planning system, the responsibility for infrastructure and tourism planning lies with multiple departments at national, provincial and local government spheres. Tourism infrastructure needs can therefore best be addressed through integrated planning. This thesis presents the results of a qualitative, multi-method study. Various methods, such as reviews of documents, key-informant interviews, focus groups and case studies were utilised to gather data. The research also contains the reflections of the researcher who has extensive experience in public sector planning. The research question was: “What are the key elements of a model for integrated tourism infrastructure planning undertaken by the South African public sector?” The model proposes three key elements - a National Tourism Spatial Development Framework; Regional Tourism Masterplans; and a Tourism Infrastructure Strategy and Plan. A People component has also emerged as being significant for the effectiveness of the model. The study further confirmed that the model will support the integration of tourism, economic, spatial and infrastructure planning and development. In the long - term integrated public sector tourism infrastructure planning in South Africa, should yield greater public sector investment, stimulate greater private sector investment, and ultimately support the growth and competitiveness of the tourism sector. This research makes a significant contribution to knowledge for integrated infrastructure planning.Item A morphometric analysis of the growth of the immature and sub-adult human palate(2021) Onwochei-Bolum, Nkemakonam VincentPostnatal nutrition in humans is associated with advancement in the mode of feeding from the neonatal and infancy period of growth to adulthood. During the neonatal and infancy periods, the palate functions in suckling, tongue manipulation and swallowing, while in adulthood and with dental eruption, the palate participates in both mastication and in the production of sound. It is anticipated that the transition in the role of the palate due to alterations in its function over time will cause morphological changes. Thus, the aim of this study was to analyse alterations in the shape and dimensions of the human palate from birth through the stages of dental eruption to the complete emergence of the permanent dentition in the sub-adult stages of life. Crania from 72 South African individuals were sourced from the Raymond A. Dart Collection of Human Skeletons, School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand. The sample was divided into three age groups to correspond with the age ranges of the eruption of the deciduous dentition (birth to 5 years of age), mixed dentition (6 to 12 years of age) and the permanent dentition (13 to 20 years of age) respectively. A series of 14 osteological landmarks were digitized across the oral surface of the palate using an Immersion MicroScribe G2 unit. Landmark data were converted to linear distances and the length, width and elevation of the palate were assessed in relation to the state of the dentition. Analysis included both quantitative (linear measurements) and qualitative (wireframes) methods. The length and width of the palate in the permanent dentition group was significantly larger when compared to the mixed and deciduous dentition groups. While elevation of the palatal dome in the permanent dentition group was significantly greater than that of the palate in the mixed dentition group, no further significant differences were observed. Thus, changes in the morphology of the palate appear to be progressive with dental eruption and development across the different states of the dentition. By establishing the nature of the changes in the functional environment of the palate during development and growth, abnormalities in the postnatal development of the palate could be diagnosed.Item A social realist perspective of academic advising in a South African higher education context: a study of practices and practitioners(University of the Witwatersrand, Johannesburg, 2023) De Klerk, DanieThe South African higher education sector has numerous challenges to contend with. Students' prospects of success are often vulnerable to uneven secondary schooling, structural and material constraints, massification of the sector, and a range of other factors. In this thesis, I argue that academic advising has the potential to help find responsive and sustainable solutions to address these challenges. Academic advising is well established in the global north. In contrast, it remains an emerging field of practice in South Africa, with a dearth of literature about how advising is developed and practiced within the country’s unique higher education context. This thesis aims to contribute to the limited knowledge base about advising as a practice and the work of academic advisors as practitioners in South Africa. The study provides a social realist perspective of the emergence of advising within a South African higher education context. It draws on Margaret Archer’s work on structure, culture, and agency, the morphogenetic approach, and the notion of stratified layers of social reality to analyse data, make inferences, and draw conclusions. This is a qualitative study that adopts a mixed methods approach. The research paradigm is phenomenological, while phenomenographic principles are used selectively to advance the objectives of the study. The data that informs the study consists of a quantitative baseline dataset and qualitative data collected through semi structured interviews with 15 academic advisors working at the University of the Witwatersrand. As this is a PhD by publication, the thesis consists of four interconnected papers (i.e., chapters), bookended by introduction and conclusion chapters. The first paper provides insights about advising as gleaned from the baseline data, while the second draws on the same data to highlight the impact of students’ structural and material constraints on the work of academic advisors. Papers three and four use interview data to glean academic advisor insights about advising prior to and during the COVID-19 pandemic, respectively. The thesis concludes by highlighting the transformative potential of academic advising for South African higher education yet cautions that a major shift in the way advising is perceived and practiced is required for its potential to be realized.Item A study of the support effect of carbon dots-derived graphene-like sheets on the autoreduction of cobalt nanoparticles for Fischer–Tropsch synthesis(2022) Mokoloko, Lerato LydiaThe aim of this study was to synthesize and characterize carbon dots (CDs) and to use them as a support material for cobalt (Co) based Fischer-Tropsch synthesis (FTS) reactions. The CDs were chosen for this study due to their small size (< 10 nm), easy surface functionalization and synthesis. The small size of the CDs was required for the study of inverse catalyst support effects. An inverse supported catalyst (in this case, the Co/CDs catalyst) refers to the dispersion of a support material that has a small size (d < 5 nm) onto the surface of a metal catalyst with a similar small size (d > 8 nm). The synthesis of this proposed catalyst was successful. FTS studies on the Co ‘supported’ CDs were attempted. Extremely poor FT activity was observed. Post analysis of the catalyst revealed that the CDs did not retain their quasi-spherical and small particle size morphology under the FTS reaction conditions (temperature 220 °C, 10 bar P; H2:CO ratio = 2:1). Instead, upon exposure to a heat treatment, the CDs were transformed into layered structures with a unique resemblance to graphene-based nanosheets (GNSs). This transformation impacted on the use of these catalysts in the FTS reaction. However, this result indicated an unusual transformation of the CDs into another carbon shape. In light of the fascinating transformation phenomenon, annealing studies were then conducted to investigate the effect of annealing temperatures on the CDs structural changes. The CDs (average d= ~ 2.5 nm) used in this study were obtained from the microwave-assisted carbonization of L-ascorbic acid and subjected to a heat treatment (i.e. annealing) at temperatures between 200 and 700 ℃ in a horizontal CVD apparatus under an inert nitrogen gas. It was observed that annealing transformed the CDs from 0-D qausi-spherical nanoparticles to 3- D multi-layered carbons (at 300-600 ℃) and finally 2-D layered materials (at 700 ℃). Furthermore, annealing at 700 ℃ yielded a 2-D single-layered material with comparable properties to traditionally reduced graphene oxide (rGO). A wide range of characterization techniques were used to gain an insight into the physicochemical properties of these novel CDs-derived allotropes as well as to rationalize their mechanism of formation. After evaluating the properties of these materials, it was clear that the surface oxygen functional groups, observed from XPS, 13C NMR and other studies, were responsible for the CDs to rGO transformation. It was proposed that the CDs are assembled to form rGO (and other CDs-rGO derivatives) by either the Ostwald ripening (in which the carbons agglomerated via a gas phase) or a solid phase reaction (involving reaction of CD edges). To further investigate the effect of annealing on the evolution of CDs to layered carbon structures, N-doped CDs (or NCDs) were also studied. The method used to make the pristine CDs was modified by incorporating urea as a nitrogen source to make the NCDs. Annealing the NCDs at temperatures between 200 and 700 ℃ also transformed the quasi-spherical NCDs (average d = ~ 4.1 nm) to multi-layered carbon sheets at temperature as low as 200 ℃. The CD transformation was also associated with the loss of surface functional groups, with % O and N contents of ca. 17 and 16 % (pristine NCDs) being reduced to ca. 8 and 7 % for NCDs annealed at 700 ℃. A similar mechanism for the formation of these N-doped layered carbon structures by annealing was also proposed here. For these samples, it was also observed that the N-bonds, especially the sp3 type nitrogen bonds found on the edges of the NCDs, also took part in the coalescence of the NCDs to give the layered materials. XPS data suggested that in the process, these sp3 type nitrogen bonds were transformed into sp2 pyrrolic-N, pyridinic-N and GraphiticN groups. The annealed CDs products were used to support Co (called Co3O4/T250, Co3O4/T400 and Co3O4/T700 where T is the temperature at which the CDs were annealed) for use in FT studies. Studies were conducted to evaluate the effect Co hydrogen reduction temperatures verses autoreduction temperature, catalyst thermal stability and performance in the FTS reaction at 220 °C (10 bar P; H2:CO ratio = 2:1). Upon investigation of the reduction behaviour of the Co/CDs derivative catalysts using in situ PXRD, it was found that these materials can successfully facilitate autoreduction of Co3O4 to Co face-centered-cubic (fcc) at temperatures > 400 ℃ by a reduction pathway similar to that observed using conventional H2 reduction conditions. As expected, the reduction under H2 took place at a lower activation temperature (> 250 ℃) than the autoreduction process. It was also noted that these novel carbon support derived from CDs gave reduced FTS performance compared to the unsupported Co, especially towards C5+ yields (< 30 % for all Co supported catalysts). These novel CDs-derived allotropes were found to have limited use as supports in Co-based FTS, due to Co agglomeration. These NCDs-derived allotropes (annealed at 200 ℃, 400 ℃ and 700 ℃) were incorporated as active layers in the fabrication of chemoresistive sensing device detection of volatile organic compounds (VOCs). These layered showed enhanced chemical vapour sensing properties, especially for methanol and ethanol detection at room temperature. Therefore, although there are great limitations for applications of these CDs-derived layered allotropes in FTS reaction, these materials show a much better potential for applications in facile and cost effective VOC sensors. Further studies on this will be conducted.Item A visual-temporal excavation of Schaapplaats rock shelter: unearthing a trace fossil(2021) Yorke, NaudiaIn this research report, I set out to provide information about Schaapplaats rock shelter through a multi-sensory, ekphrastic approach as set out by the artist William Kentridge1 to guide the process of looking. As such this project presents an experience of space and time compressed within a single landscape. The research foregrounds the different ways of looking and different ways of perceiving the elements in the landscape. Schaapplaats is a farm located in the eastern Free State. A rock shelter at Schaapplaats which I examine contains a number of objects and traces that relate to various moments in time. The site is an event-loaded spatial nexus which I unpack, closely examining each object to expose the complex layering of objects and traces of events over time. My aim in examining the site in this way is to interrogate the variety of elements in the rock shelter to understand the complicated nature of time and the reading of it in objects. My methodology involves the slow process of describing and pulling-apart the objects, fieldwork that is primarily comprised of being in the space, and visually constructing and reconstructing the space and the elements within it – with a particular focus on the trace fossil (a dinosaur footprint) present in the space. The result is a reflective paper that considers meanings that could be drawn from a singular item, in conjunction with a number of other items within a space that is complex in its variety of traces and temporally layered.Item Adverse childhood experiences and social and health outcomes in later life(2024) Naicker, Sara N.Background: Well-established literature points to early life experiences and childhood adversities setting the foundation for health and development and influencing life trajectories. Nurturing, responsive caregiving in a safe and stable environment is associated with healthy, productive lives throughout adulthood. On the other hand, adverse experiences in childhood are associated with poor health and wellbeing, risky behaviour and reduced human capital. How this adversity is measured and the context in which it is measured may provide insight into the relationship between adversity and outcomes over and above what has been found in high income countries. Aim: The overall aim of this study is to examine adverse childhood experiences (ACEs) in a South African birth cohort. Specific objectives of the study include: a) developing prospective and retrospective profiles of ACEs in the sample, b) establishing levels of agreement between these two profiles of ACEs, c) estimating the prevalence and clustering of ACEs in this population-based urban sample, d) examining the associations between exposure to ACEs and a range of physical and mental health and social outcomes, and e) understanding the role that recent stress plays in the relationship between exposure to ACEs and poor outcomes. Methods: This study uses a secondary analysis design using data from the longitudinal Birth to Thirty cohort. The cohort began in 1990 with the enrolment of 3,273 pregnant mothers and has followed the children born to these women for more than thirty years. The 10-item ACE Index developed by the CDC-Kaiser’s ACEs Study was expanded to include five additional ACEs common in the South African context – chronic unemployment, violence in the community, household death, parent death, and separation from parents. Prospective profiles of ACEs were collated from data collected over the first 18 years of the child’s life, initially reported by primary caregivers until age 11, then self-reported from ages 11 to 18. Retrospective profiles of ACEs were collected in young adulthood when the participants were 22 years old, along with an index of recent stressors. A series of human capital outcomes – those encompassing physical and mental health and psychosocial adjustment, were assessed at age 28. ACEs in the sample were conceptualized in three ways ‒ as single adversities, such as physical or sexual abuse, cumulative adversity in the form of the ACE score, and clusters of adversity determined by their patterning. Cohen’s kappa statistics and concordance rates were generated to establish the levels of agreement and consistency between prospective and retrospective reports of ACEs (timing) and between reports given by caregivers and children at age 11 (source). Descriptive statistics and latent class analysis were used to estimate the prevalence of ACEs and to explore the patterning of ACEs among participants. Logistic regression analysis explored associations between all three conceptualizations of ACEs and outcomes, disaggregated by sex. Mediation and moderation analyses were conducted to examine the influence of recent stress on mental health outcomes. Findings: Comparisons between prospective and retrospective reports of ACEs show that there is relatively low-to-moderate agreement between timing and sources of reports of ACEs. Agreement varies depending on the adversity in question – with greater levels for objective Naicker, S.N. 2023. Adverse Childhood Experiences and Social and Health Outcomes in Later Life experiences such as parental death and lower levels for subjective experiences such as chronic unemployment. Differences in agreement were partly due to prospective and retrospective reports identifying largely different groups of people; those who only report high exposure prospectively, those who only report high exposure retrospectively and those that overlap. Using either prospective or retrospective reports, the prevalence of ACEs in this sample were high, although there were significant decreases in prevalence from prospective reporting to retrospective reporting. ACEs tended to co-occur, and where one ACE was reported, the likelihood of others increased. Clusters of ACEs split distinctively into high-low:dysfunction abuse categories; with one group likely to have low exposure, another with high generalized exposure to all ACEs, a third with moderate exposure characterized by household dysfunction and a fourth with moderate exposure driven by emotional abuse and/or neglect. All three conceptualizations of ACEs were significantly associated with poorer outcomes. Single ACEs such as physical, sexual and emotional abuse, and exposure to intimate partner violence, were independently and strongly associated with poorer outcomes in adulthood. Increased exposure to ACEs, or cumulative adversity, was also linked to poorer outcomes in a graded manner, with the likelihood of experiencing poor outcomes increasing along with exposure. The clusters with high levels of exposure to ACEs and moderate levels of exposure driven by emotional abuse were most at risk for poor outcomes. There were significant differences in exposure to ACEs, outcomes and the associations between the two by sex. Associations also differed for prospective and retrospective reporting with the strength of association varying depending on the outcome in question. Recent stressors were found to play a confounding role in the relationship between ACEs exposure and poor outcomes. Although recent stressors had a different impact on those who reported high ACEs exposure prospectively versus those who reported high ACEs exposure retrospectively. The influence of recent stressors on the mental health of those who reported high exposure to ACEs prospectively supported a sensitization model. In contrast, the role of recent stressors on the mental health of those who reported high exposure to ACEs retrospectively supported a stress inoculation model. This suggests two potential pathways for risk. Conclusion: In combination and accumulation, it is demonstrated here that adverse experiences in childhood have an impact on health and wellbeing in adulthood. Specific individual ACEs can be teased out for their independent effect on outcomes, but the additive effects of multiple adversities lead to almost exponential increases in the risk for a myriad of negative physical and mental health and social outcomes. These findings provide important links from South Africa’s context of high levels of violence in all forms and multiple hardships that families with large burdens of care endure, with little support, to many of the human capital outcomes on which productive, healthy and happy lives depend. Born at the dawn of democracy, with anticipation for opportunity, many of the children in this cohort were raised in contexts of adversity that may have been experienced as normative in those settings. Regardless of whether these experiences leave enough of a mark to be recalled later in life, the strain of cumulative adversity has had persistent and serious effects on their mental health, their ability to finish school, find a job and stay out of trouble.Item Africanfuturism, placing Africa in the future: an analysis of Pumzi (2009) and Afronauts (2014)(University of the Witwatersrand, Johannesburg, 2023) Shirinde, KarabeloTaking into consideration Africa’s long historical relationship with colonialism, alienation and currently neo-colonialism, ‘africanfuturism’ a sub-genre of science fiction and the focus of this study, brings forward the necessity of rooting African science fiction films in the continent of Africa, created by Black people of African descent and ensuring that narratives are driven by the histories, daily social-political and cultural experiences of the people within the continent. Therefore, this study aimed to investigate how the African science fiction films Pumzi (2009) directed by Wanuri Kahiu, and Afronauts (2014) directed by Nuotama Frances Bodumo portray africanfuturism. This study used a developed africanfuturist framework inspired by the description of africanfuturism by author Nnedi Okorafor (2019) and Masego Mashigo (2018). The chosen case study films were analysed according to africanfuturist components, namely: iconography, ideology, geopolitical and socio-cultural background, semiotics and symbolism, and the filmmaker’s profile to determine the extent to which they portray africanfuturism. Further research objectives of this study included the discussion on how Western science fiction films present colonial conventions and the difference between afrofuturism and africanfuturism within the literature review. With the application of the developed africanfuturist framework, this study concludes that both Pumzi (2009) and Afronauts (2014) successfully portray africanfuturism in the capacity of their geological settings, ideological viewpoints, socio-economic and political representations and local cultural symbolisms within the continent. Finally, both films present a nuanced understanding and portrayal of science and technology as it relates to the African continent, and further dismantles preconceived notions about the African continent as described by the West. These representations essentially redefine the relationship between Africa and the science fiction genre by clearly demonstrating, transforming and representing the continent within an imaginative and realist space, coupled with scientific, technological and globalist expressions.Item An analysis of the effectiveness of corporate social responsibility in the mining sector: a comparative study of South Africa and Zimbabwe mining companies(2020) Mandevere, MelodyOver the past years, Corporate Social Responsibility (CSR) has received increased attention from the corporate world and international organisations. There has been a call for an Africanised CSR agenda based on the African context since CSR activities being undertaken in developing countries do not address the root cause of poverty and fail to improve relations with local communities. There is concern over the sustainability of the CSR projects undertaken by mining companies in Zimbabwe and the motives behind CSR activities aimed at benefitting the mining companies’ shareholders and less on the community where they operate. CSR projects in Zimbabwe differ to that of South Africa although the companies are subsidiaries. This comparative study between Zimbabwe and South Africa’s mining sectors has been carried out to analyse the effectiveness of Corporate Social Responsibility activities. The study followed the interpretivism philosophy and the qualitative research design with multiple case studies in the two countries. The target population for the research were two companies with branches in Zimbabwe and South Africa. Hence four mines were chosen, two in Zimbabwe and two in South Africa. A total of 22 respondents were purposively selected consisting of community representatives, mining company representatives, non-governmental stakeholders and governmental stakeholders. Data was triangulated by integrating semi-structured interviews and secondary documents. The findings indicated that in South Africa there is more stakeholder inclusion and ownership of the CSR projects as compared to Zimbabwe. This is more attributed to the nature of the South African legislation on CSR that encourages stakeholder inclusion. The stakeholder inclusion and ownership contributes to project sustainability which then leads to effectiveness of CSR. The research also concluded that an Africanised CSR agenda should prioritize legal iii issues over others. This means African countries need to attend to their legislation so that CSR is mandatory with ‘social impact’ as the driving force. The study contributes to the CSR literature specifically as a comparative study between African countries. This is one of the few empirical studies that compare CSR in neighbouring developing countries. Moreover, the study also addresses whether there is a need for a more Africanised CSR to address the social challenges and understand the effectiveness of the Africanised CSR agenda leading to sustainable developmentItem An application of John Rawls' principles of social justice to planning: issues arising from the implementation of the national housing subsidy programme in the inner City of Johannesburg(2024) Oelofse, Michael GeraldJohn Rawl' s conception of social justice has had a fundamental influence on liberal ethics yet its practical implications for distributive planning have rarely been considered in any comprehensive way. This is the key contribution of this thesis. Using the South African housing subsidy system, it examines how distributional policies may be structured to benefit the least advantaged and explores the consequences of their implementation in Johannesburg's inner city. Based on a literature review, it argues that Western planners often place the responsibility for distributional decisions on political processes, or concern themselves with maximising the public good without addressing the consequent allocation of the costs and benefits among members of society. Contemporary planning theory continues to avoid the substantive c.9ntent of social justice. Confronted with what seem to be equally valid, often competing conceptions of social justice, planners focus on the fairness of planning procedures instead of taking normative, principled positions on distributional outcomes. However, just procedure alone does not guarantee a just outcome. This requires adherence to some predefined set of distributional principles, and Rawls' political conception of social justice is presented here as a reasonable and compelling option for planners. Drawing on the author's practical experience, this thesis traces the liberal influence on the formulation of housing subsidy policy in South Africa and argues that national policy generally conforms with Rawlsian distributional principles. However, an empirical analysis of the housing sector in Johannesburg's inner city reveals that its impact is dissipated by a lack of local commitment to the original principles. Conflicting development principles and a failure among many residents to honour the obligations attached to housing benefits compound the problem. This thesis concludes that Rawlsian principles of social justice in combination with the contemporary communicative turn in planning provide planners with a powerful means of placing social justice on the development agenda, but that these principles require championing because conflicting principles and interests continuously place the needs of the least advantaged at risk.Item An audit of the presence of coeliac disease associated human leukocyte antigen haplotypes in renal and bone marrow transplant donors and recipients from the South African National Blood Services(2021) Mrubata, Kitso-LesediIntroduction: Coeliac Disease (CD) is an autoimmune condition occurring in genetically predisposed individuals exposed to an environmental trigger. The Human Leukocyte Antigen (HLA) haplotypes HLA DQ2.5 and HLADQ8 bear the strongest association with CD, and 90 -95% of patients with CD bear these haplotypes. The absence of these haplotypes has high negative predictive value. The susceptibility of the South African population to CD has not been studied previously. Methods The South African National Blood Services database was used to analyse the prevalence of HLA DQ2.5 and DQ8 in potential donors and recipients of organ transplants. Results The overall prevalence of HLA DQ2.5 and HLA DQ8 was 19.8%. The prevalence was lower in Black subjects (15%) than Caucasians (28%). Mixed race (22%) and Indian (17%) subjects had intermediate prevalence. The was no significant difference between potential transplant donors and recipients. Conclusion The prevalence of HLA DQ2.5 and HLA DQ8 differed among South African study participants of different ethnicities and was lower than the reported world-wide prevalence of 30-40%.Item An integrative cognitive-behavioural framework for predicting collective intelligence in small teams(2020) Yu-Jen Chen, JeffersonLeaders’ capability to empower their employees to form small intelligent teams will profoundly impact the competitiveness of their organisations, considering that unrelenting disruption and fierce competition are the norms in today’s business landscape. In part, owing to this reason, the study of collective intelligence (CI) has emerged as a notable interdisciplinary body of knowledge in recent years. Scholars have regarded CI as the socio-psychological concept that accounts for how team members can derive superior ideas leading to higher performance when working together as collectives instead of as individuals. The study of CI in adults is relatively new ground for management science and various research gaps persist. Not only does a well-validated CI predicting framework not exist, many CI studies were not carried out in settings that closely resemble the real-life organisational context. Some researchers even contest the legitimacy and the existence of CI. To study CI in small teams can be challenging. One of the pertinent challenges is that factors attributing towards the development of individual adults’ intelligence are not well-understood. Newly emerged studies have further highlighted the poor correlation between scores generated from widely-adopted intelligent quotients (IQ) tests and adults’ intelligence. Other studies have asserted that one cannot simply assign adults’ IQ as the results of their biological attributes and further advocate that it is more accurate to study what the cognitive-behaviours are that influence the intelligence of adults in the day-to-day context. In a similar trend of logic, CI researchers have greatly accentuated that an integrative cognitive-behavioural framework that can predict the CI of the small teams is well-needed but has not yet been established. Taking these scholarly recommendations as the basis for the research design, this study regards CI as an emergent asset that arises from the cognitive-behaviours between team members during the problem-solving and decision-making processes. This study assessed the causal relations between twenty hypotheses of three cognitive-behavioural clusters, viz. resource acquisition and utilisation (RAU), strategic thinking (ST) and team members exchange (TMX), and the CI of the Action Learning Project (ALP) teams based on the outcomes of ALP competitions. The lack of academic consensus on how these twenty cognitive-behaviours impact the CI of small teams provides added novelty to this research. Considering that ALP teams are subjected to an environment that shares a fair amount of similarities with the real-life corporate scenarios but with less interference by other complex issues, the empirical findings allow researchers to further their scholarly knowledge, practitioners to design better ALP content and leaders to empower their teams. A questionnaire was developed and tested before inviting research participants to rate their own cognitive-behaviours as individuals and concurrently to assess the same cognitive-behaviours of their teams as collectives. Seeing that CI studies commonly rely on participants’ self-reporting data about the perceptions on their own cognitive-behaviours only but hardly having been probed and compared against the outcome of the participants’ perceptions of their teams as collective, contrasting two surveying approaches allow this study to conclude which approach is more appropriate for CI related studies. The responses of 406 delegates from 12 programmes were deemed fit for use, and the datasets were subjected to various statistical calculations. The findings revealed that the two datasets obtained from the two surveying approaches produced two slightly different structural path models after they were subjected to both descriptive and inferential statistic techniques. The hypotheses were reassigned into different factor dimensionalities, and subsequently, the partial least squares structural equation modelling calculations were applied to these two models. The statistical results indicated that the H-null for one of the 20 hypotheses must be rejected. An explanation was offered. Subsequently, the factors accepted were ranked according to the degree of potential impact on the overall CI of the ALP teams. The plausible rationales and the implications of this ranking are discussed. In addition, it was found that the datasets obtained from the “Rate Team” surveying approach produced a slightly better CI predictability than the ones obtained from the “Rate Self” surveying approach. The suitability of the surveying approach for CI related study is then discussed. Despite the differences between these two structural path models being marginal, this study observed a profound contrast of the key insights of each model. For the model generated from “Rate Self” surveying approach, it underscores the importance of the RAU cognitive-behaviours. Whereas the model generated from “Rate Self” surveying approach advocates that small teams must pay equal emphasis to all three types of cognitive-behaviours (RAU, ST and TMX) in order to boost overall CI of the ALP teams. The findings challenge the popular management philosophy of “culture eats strategy for breakfast”. Instead, the outcome of the study draws attention to the equal importance of gathering and utilising resources, thinking strategically and harnessing helpful styles of interaction among team members. The limitations and contributions were discussed. Recommendations for future studies are also proposed based on the findings uncovered.Item An intersectionality of race and ethnicity: the glass ceiling in the banking sector in Kenya and South Africa(University of the Witwatersrand, Johannesburg, 2021-12) Genga,Cheryl Akinyi MargaretEven though progress has been made in the Kenyan and South African banking sector, Black African women remain a minority in Top Executive leadership positions. Previous research on the “glass ceiling” focuses on Black African women as one homogenous group not acknowledging the diversity dimensions of Black African women from Africa. Invisible factors such as race and ethnicity have been stated to contribute to the glass ceiling in the banking sector, yet this has not been investigated making Black African women more invisible. This research primarily aims to provide an understanding of the intersectionality of race, ethnicity, and career advancement of Black African women in the Kenyan and South African banking sector. This research further aims: to describe the obstacles that Black African women still face, to analyse the diversity of Black African women in management, to identify the reasons as to why some Black African women have been able to crack the glass ceiling in the Kenyan and South African banking sector and to give recommendations to stakeholders as to how they can help crack the glass ceiling for Black African women in the Kenyan and South African banking sector. To address the research objectives, this research applied a qualitative Intercatergorical Intersectionality Approach to provide an understanding of the relationship between race, ethnicity, and gender in the Kenyan and South African banking sector. This was facilitated by the use of semi-structured in-depth interviews and focus groups that were carried out with the participants being Black African women managers in the Kenyan and South African banking sector in Nairobi and Johannesburg, respectively. Data collected from the interviews were transcribed and analysed using thematic analysis in which themes and patterns were identified to address the research objectives. Firstly, findings from the research illustrated a relationship between race, ethnicity, and gender. The extent of the relationship between race, ethnicity, and gender was discussed by the role of race, the role of ethnicity, the intersectionality of race and gender, and the intersectionality of race, ethnicity, and gender in the career advancement of Black African women in the Kenyan and South African banking sector. Secondly, the findings identified the obstacles that Black African women still face in the banking sector, which were discussed and described into three groups: Black African women are their own worst enemies in the banking sector. Thirdly, the findings illustrated the diversity dimensions of Black African women managers from the Kenyan and South African banking sector in relation to their race, ethnicity, and the positions that they held in the banks they were working for. Fourthly, the findings highlighted reasons as to why some Black African women managers had cracked the glass ceiling (discussed with the use of the glass ceiling scale). Fifthly, the findings recommend that stakeholders have to be fully committed if they want to help Black African women crack the glass ceiling in the Kenyan and South African banking sector. In conclusion, through the findings, this research provides a conceptual framework to understand the glass ceiling in relation to the intersectionality of race, ethnicity, and gender of Black African women in the Kenyan and South African banking sector.Item Analysis of the developmental potential of artisanal and small-scale mining: a strategy for South Africa(2024) Twala, Pontsho FrancinahThe mining industry remains central to the socio-economic development of mineral economies. While this is the case, most African countries have been struggling to translate the benefits of mining into positive developmental outcomes. This has been attributed to several factors including the failure to leverage opportunities from the Artisanal and Small-Scale Mining (ASM) sector which has been growing in most countries. As is the case in other African countries, the mining industry continues to play a considerable role in South Africa’s economy. The industry is expected to contribute significantly to the country’s socio-economic agenda which aims to eradicate poverty and inequality by 2030. Despite the positive outlook, the performance of the industry has been declining resulting in the government identifying a series of interventions aimed at reviving the industry’s activities. Amongst these is the formalisation of the ASM which has been earmarked for job creation and poverty alleviation. The objectives of the Thesis were to establish the developmental potential of ASM in the country, and subsequently develop a strategy framework aimed at enabling the sector to contribute to the mining industry and national development plan. The study was conducted using multiple case studies with data collected and analysed using multiple methods. The major finding from the study is that the ASM sector has the potential to contribute towards the country’s development priorities. This is taken from the evidence that shows a direct link between the sector’s activities and the country’s socio-economic landscape. It was established that the main drivers of ASM are socio-economic challenges in the country, mainly growing unemployment and poverty levels. To this end, ASM is playing a role in providing livelihoods to country’s population is that most affected by poverty and unemployment. As a livelihood strategy, ASM has improved the poverty status as well as the living standards of those that participate in its activities. The evidence from the study revealed that most of the miners measure above the country’s subsistence level and can provide for themselves and their families. The benefits of the sector also extend to communities and overall, these can be linked to several objectives as captured in the country’s development plan. The conclusion from the study is that the developmental potential of ASM can only be leveraged if the challenges in the sector are addressed, and these encompass issues relating to the regulation of the sector, mining land and mineral resources; value chain constraints, and related support, responsible practices, institutional arrangements, and ASM stakeholder relationships.Item An analysis of the effectiveness of Corporate Social Responsibility in the mining sector: a comparative study of South Africa and Zimbabwe mining companies(2021) Mandevere, MelodyOver the past years, Corporate Social Responsibility (CSR) has received increased attention from the corporate world and international organisations. There has been a call for an Africanised CSR agenda based on the African context since CSR activities being undertaken in developing countries do not address the root cause of poverty and fail to improve relations with local communities. There is concern over the sustainability of the CSR projects undertaken by mining companies in Zimbabwe and the motives behind CSR activities aimed at benefitting the mining companies’ shareholders and less on the community where they operate. CSR projects in Zimbabwe differ to that of South Africa although the companies are subsidiaries. This comparative study between Zimbabwe and South Africa’s mining sectors has been carried out to analyse the effectiveness of Corporate Social Responsibility activities. The study followed the interpretivism philosophy and the qualitative research design with multiple case studies in the two countries. The target population for the research were two companies with branches in Zimbabwe and South Africa. Hence four mines were chosen, two in Zimbabwe and two in South Africa. A total of 22 respondents were purposively selected consisting of community representatives, mining company representatives, non-governmental stakeholders and governmental stakeholders. Data was triangulated by integrating semi-structured interviews and secondary documents. The findings indicated that in South Africa there is more stakeholder inclusion and ownership of the CSR projects as compared to Zimbabwe. This is more attributed to the nature of the South African legislation on CSR that encourages stakeholder inclusion. The stakeholder inclusion and ownership contributes to project sustainability which then leads to effectiveness of CSR. The research also concluded that an Africanised CSR agenda should prioritize legal issues over others. This means African countries need to attend to their legislation so that CSR is mandatory with ‘social impact’ as the driving force. The study contributes to the CSR literature specifically as a comparative study between African countries. This is one of the few empirical studies that compare CSR in neighbouring developing countries. Moreover, the study also addresses whether there is a need for a more Africanised CSR to address the social challenges and understand the effectiveness of the Africanised CSR agenda leading to sustainable developmentItem Application of derivative techniques to improve the forecasting of price volatility of copper, gold and platinum metals(2024) Veriyadi, VeriyadiThis research investigates the forecasted price volatility of copper, gold and platinum metals based on the selected companies; Palabora Copper Mining Ltd, AngloGold Ashanti Ltd, Gold Fields Ltd, Sibanye-Stillwater, Anglo Platinum Ltd and Impala Platinum Ltd. In responding to the latter sentence, single price volatilities are dual volatilities, where dual volatilities comprise of financial and technical variables. The selected firms either have global operations or they are subsidiaries of global companies. Dual volatility is computed using a Sample Correlation Coefficient and in order to explore the dual volatility, this research introduces three hypotheses. The first hypothesis uses a Decision Tree Analysis to test dual volatility based on financial and technical variables (e.g., mineral commodity price, metal grade, operating cost and production rate) in improving the forecasting of price volatility of copper, gold and platinum metals. For validation, the first hypothesis uses the Markov-Regime Switching Model. The results of this hypothesis illustrate that dual volatilities are more accurate and robust than price only volatilities. Then, the second hypothesis examines dual volatility using a GBM model. This hypothesis tests dual volatility; which is computed based on financial and technical variables (e.g., oil price, copper price, oil production and consumption, copper production and consumption; and the exchange rate from U.S.$ to ZAR and gold and platinum price data). The chosen variables that affect the dual volatility are examined using a Multiple Regression Model and that model confirms that those variables are independent in principle. Finally, the third hypothesis estimates future profits based on a binomial tree, which has risk-neutral probabilities based on dual volatility using mineral commodity price, metal grade, operating cost and production rate. The results of risk-neutral probabilities using dual volatility are less optimal than a mineral commodity price volatility due to not accounting for the mean of logarithmic returns. The robustness test uses the VAR model, which indicates that the profits react differently to different shock stages from revenues, risk-free interest rates and profits. In conclusion, dual volatility can improve future price forecasting performance because duality is underpinned by different variables, which include independent variables from the global commodity markets. The forecasting performance improvement from dual volatility in predicting the future price can be shown by the lower value of the Root Mean Square Error and Mean Absolute Percentage Error results than a mineral commodity price volatility. The findings of this research apply to copper, gold and platinum metals for mining around the globe.Item Application of integrated methods to assess and characterise the hydrogeology of coastal aquifers in parts of Lagos, Southwest, Nigeria(2020) Yusuf, Mumeen AdebayoThe scope of this Thesis was to apply integrated methods to characterise the groundwater systems of the Lagos Coastal Basin. Like every coastal area in the world, saline intrusion has been the major challenge threatening the fresh groundwater aquifers of the study area over the last couple of decades, and thus, necessitating its assessment. Environmental isotopes, being a reliable and standard tool in hydrological investigation, was employed in combination with geophysical and hydrogeochemical methods to study the coastal aquifer systems. Geophysical probing of the subsurface revealed an alternating sequence of clay and sand, constituting the major lithological units in the study area. The basin aquifers are hosted essentially by sands and clayey sand, while the modes of aquifer occurrences are unconfined to semi-confined and confined for shallow and deep aquifers, respectively. Hydrochemical interpretation identified a surficial thin layer of fresh groundwater overlying the main zone of saline intrusion, which essentially comprises Ca-HCO3 and Ca-Mg-HCO3, Ca-Mg-HCO3 and Ca-Mg-Cl-SO4 hydrochemical facies for both dry and wet seasons, whereas the surface waters are characterised by Mg-Cl and Na-Cl water types for the lagoon and the ocean, respectively. The evaluation of the chemical processes revealed the dominance of carbonate weathering in the shallow aquifer. Hydrochemical, statistical and geochemical model analyses identified that the groundwater chemistry is significantly controlled by water–rock interaction and ion exchange processes as well as anthropogenic activities. Stable isotopes revealed precipitation as the main source of recharge into the basin aquifer systems. Analyses of the 3 H and 14 C activities were in agreement, revealing an interesting fact about the increase in the groundwater residence time from the surface through deeper depths deducible from 3H values range between 0.1 TU and 2.8TU; 0.0 TU and 0.3 TU; and 14 C age range from 4350±10 to 1050±10 years and between 12030±69 and 7400±50 years for the shallow and deep aquifers, respectively. The mean residence time was supported by the aquifer systems‟ recharge which took place in Holocene for the shallow aquifer and Late Pleistocene–early Holocene for the deep aquifers evident from the calculated ambient temperature, 18 O and 14 C plots. The hydrogeological conceptual models showed that saline incursion severely impacted the second aquifer from a depth ≥20m to 170m in the western and central parts of the study. However, the observed local saline occurrence in places <20m was attributed to groundwater overexploitation. Conclusively, the hydrological systems of the Lagos coastal basin is continually being modified by both anthropogenic and natural activities that constitute not only a major threat to the groundwater sustainability of the Lagos coastal basin but can also consume the entire study areaItem Assessing alternative monetary policy frameworks and instruments in selected African economies(2017) Chiumia, Austin BelewaThis thesis contains three core chapters that assess the performance of alternative monetary policy frameworks and instruments in stabilizing 10 selected African economies. Literature and practice show that Advanced Economies (AEs) and Emerging Market Economies (EMEs) are mostly adopting the ination targeting (IT) framework. This framework relies on active use of the interest rate as a policy instrument for macroeconomic stabilisation. Di⁄erent from AEs and EMEs, the majority of African countries are characterized by low nancial market development, frequent supply shocks and volatile terms of trade. These features impede the e¢ ciency of the IT framework and the interest rate instrument. Supply shocks imply that ination is not only demand driven. Volatile terms of trade translate into excessive exchange rate uctuations. Due to these factors, policy practice in Africa remains largely divergent from the global trend. Authorities still rely on monetary aggregate targeting (MAT) with de facto managed exchange rates. However, the MAT framework is also failing to stabilize economies. This follows instability of the key factors, such as the money demand, upon which the framework is anchored. Furthermore, controlling exchange rate movements is a challenge due to weak balance of payments positions. It is not surprising, therefore, that the majority of African economies still remain in the grip of macroeconomic instability. Ination and GDP targets are rarely met and they also remain volatile. The perverse macroeconomic features and the perceived failure of the MAT regime have necessitated the search for alternative monetary frameworks and instruments. In this study, we join the search by specically focussing on three questions. First, given the macroeconomic landscape in Africa, what is the relative performance of the interest rate vis--vis the monetary aggregate as instru ments for macroeconomic stabilization? Secondly, how do these instruments perform when apart from ination and output stabilization, monetary policy also engages in smoothing exchange rate uctuations? Thirdly, what is the relative performance of ination targeting vis--vis nominal GDP targeting as alternative monetary policy regimes for macroeconomic stabilization in African economies? Although the success of monetary policy largely relies on appropriate conguration of monetary policy frameworks and instruments, answers to these questions remain controversial and scanty for African economies. In order to address these questions, we formulate a New Keynesian Dynamic Stochastic General Equilibrium (DSGE) model. In this model, money is non-separable from consumption in the utility function. We estimate the model using the Maximum Likelihood method with quarterly data mostly from 1990 to 2014. The data is obtained from the International Financial Statistics (IFS). The thesis has ve chapters. Chapter 1 is the general background to the research problem. Chapters 2, 3 and 4 are distinct but related core chapters addressing three specic research questions. Chapter 5 is the conclusion. In Chapter 2, we compare the performance of the monetary aggregate and the interest rate as alternative instruments for stabilizing ination and output in 10 selected countries. Results show that the monetary aggregate is superior in stabilizing 5 economies. In the other 5 countries, it is the interest rate instrument which performs better. In the former group of countries, the monetary aggregate plays a relatively large role in macroeconomic dynamics while in the latter the interest rate is more signicant. These results partly reect di⁄erences in nancial market development between the two groups of countries. Overall, we nd a weak role of the interest rate compared to the monetary aggregate in driving aggregate demand dynamics. The exchange rate is also found to be a key driver of macroeconomic dynamics. Our re v sults suggest three things: First, authorities in Africa need to be cautious of a blanket adoption of the interest rate as a sole monetary policy instrument. Second, authorities will nd it di¢ cult to stabilize economies using the interest rate based frameworks. Third, exchange rate stability is key to macroeconomic stability in Africa. In Chapter 3, we extend the authoritiesobjective function. In addition to minimizing ination and output volatility, authorities also use the interest rate or money supply rules to smooth exchange rate uctuations. The results show that macroeconomic performance is enhanced when authorities smooth exchange rate uctuations in 4 of the 10 countries. The gains from exchange rate smoothing mostly arise from a reduction in ination and exchange rate volatility but not fromoutput. In the other 6 countries, exchange rate smoothing worsens macroeconomic performance. These results reect the fact that the exchange rate exerts a relatively large inuence in macroeconomic dynamics in the rst group of countries compared to the latter. Exchange rate smoothing therefore minimizes the pass-through of the exchange uctuations to ination and output leading to better performance. Overall, the ndings suggest that exchange rate smoothing is harmful in Africa. Where exchange rate smoothing delivers gains, appropriate thresholdsofsmoothingneedtobeobservedtoavoidpolicyinducedmacroeconomic instability. Authorities should also smooth temporal rather that structural shifts in the exchange rate level. In Chapter 4, we compare the performance of ination targeting (IT) vis-vis nominal GDP targeting (NGDPT) as alternative monetary policy frameworks for macroeconomic stabilization. We examine the strict and exible versions of these policy regimes. We also include a hybrid regime which combines elements of IT and NGDPT. Results show that the hybrid regime performs better in 5 countries. In the other 4 countries, it is the strict ination targeting that performs better. In 1 country, exible ination tar vi geting is optimal. The results also reveal that demand shocks dominate but are closely trailed by supply and exchange rate shocks in explaining macroeconomic uctuations. The multiplicity of signicant shocks is key in explaining the dominance of the hybrid regime. The hybrid regime successfully handles shocks that can neither be optimally handled by the IT regime nor the NGDPT regime alone. These results have several implications. First, demand management alone is insu¢ cient to stabilize African economies. Second, identifying dominant shocks is critical for choosing robust monetary policy regimes. Third, the multiplicity of signicant shocks implies that choosing monetary policy frameworks and hence macroeconomic management process is more complex for African policy makers. Overall, the results have several policy implications which are outlined in Chapter 5. First, they suggest a cautious approach towards generalized adoption of the interest rate over the monetary aggregate as a monetary policy instrument in African economies. This contradicts the current wave of monetary policy changes sweeping across African countries. Secondly, the signicanceoftheexchangeraterenderscredencetoexchangeratesmoothing in Africa. The ndings, however, suggest that exchange rate smoothing can either enhance or worsen macroeconomic performance. Where it enhances macroeconomic performance, authorities must carefully consider the thresholds of smoothing to avoid creating macroeconomic instability. Authorities need not ght structural shifts in exchange rates levels through smoothing. This would help to preserve the shock absorbing role of the exchange rate. Finally, the prevalence of demand, supply as well as exchange rate shocks makes the hybrid monetary policy regime which combines elements of IT regime as well as NGDPT regime to perform relatively better in stabilizing the majority of the economies. Given the multiplicity of shocks, authorities inAfricaneedtocomplementdemandmanagementwithpoliciesthataddress supply side and exchange rate bottlenecks to ensure sustainable macroeco vii nomic stability. Overall, the ndings suggest that there is scope to improve monetary policy performance in Africa by adopting suitable frameworks and instruments. The results also highlight the problem of tackling monetary policy issues with a "one size ts all" approach.Item At the crossroads of international human rights law and international investment law: reflection on the right to development in the exercise of expropriation(2021) Kim, Young JaeGiven the current legitimacy crisis of international law, particularly the international law of investment owing to fragmentation and the negative impact of unfettered economic development on the environment and human rights, competing claims between North and South, sovereign states and multinational corporations, and sovereign states and their nationals over development and its benefits must be effectively and legitimately reconciled before any strategy to promote development can be implemented. In this respect, the human right to sustainable development, which this thesis introduced, provides a framework in which the potential competing claims of economic value and human rights value can be reconciled. This thesis considers the interplay of international development law, international human rights law and international investment law, by reference to the evolution of a right to sustainable development. In particular, it focuses on how the international investment law regime has evolved to incorporate human rights and sustainable development, by examining expropriation as a case study. The thesis traces the concept of development as it underlines international development law, and shows how it has moved from ‘orthodox economic development’ to ‘modern human development’ by means of the evolution of the human right to sustainable development. It proceeds to contemplate the content of this human right to sustainable development, with a view to demonstrating its relevance to international investment law. Thereafter, it shows how international investment law has evolved over time, from being narrowly focused on upholding foreign investors’ interests and rights, to taking into account international human rights and the human right to sustainable development. As a concrete example of this shift in international investment law, the thesis then conducts a case study of expropriation, which illustrates the increased interaction between the three clusters of international law. In particular, the protection of foreign investors’ rights and host states’ rights to regulate foreign investment for the purpose of ensuring international human rights and sustainable development are explored through leading cases in international investment tribunals. In conclusion, it is argued that the legitimacy of the international investment law regime can be enhanced through continuing efforts of the international community to harmonise the three clusters of international law within the human right to sustainable development .