4. Electronic Theses and Dissertations (ETDs) - Faculties submissions
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Item Financial inclusion in South Africa: An analysis of the financial sector regulatory framework and proposals for reform(2018-09) Duma, Amanda; Kawadza, HerbertAbstract Not Available.Item Landscape, Rock Art Recording, Narrative: A Biography of The Harald Pager Archive(University of the Witwatersrand, Johannesburg, 2019) Moodley, Lemishka; Wintjes, JustineIn the early days of the discipline of archaeology, the archaeologist Sir Charles Thomas Newton stated, in a lecture at Oxford University in June 1880, that “the subject-matter of Archaeology is threefold – the Oral, the Written and the Monumental” (Newton 1880, p.3–7). By ‘oral’, he meant expressions of spoken language as a form of patterned communication passed down from the past, which he considered to be as significant as written texts and traces of the built environment. Newton’s statement also resonates with ongoing attempts to make sense of the fragmentary remains of the past by including living sources with links to those remains, often referred to as ‘oral traditions’. I argue that the domain of ‘oral’ could be extended in the contemporary context to refer to the realm of the ‘spoken word’. The spoken word is mobilised in the telling of personal histories of researchers engaged in making sense of the past, consistent with a move towards the study of the production of archaeological knowledge, and the broader context of the history of science. The past, and the investigation of that past, can be easily lost or erased with time, unless it is documented in some form. For as long as I can remember, I’ve had a keen interest in knowing about the world that preceded me. So naturally, movies like Raiders of the Lost Ark (1981), The Mummy (1999), Lara Croft: Tomb Raider (2001), 10 000 BC (2008), The Prince of Egypt (1998), Brother Bear (2003) and many others, fascinated and triggered my overactive imagination. These points of inspiration even prompted many crazy shenanigans and adventures that took place in my back yard. Needless to say, my mother was never impressed because her garden was in constant danger of being destroyed through micro-excavations (as I had to find the treasure I buried the previous evening!). However, it was a Pixar animated film — The Croods (2013) — that recently re-ignited my interest in deeper human history. Despite its status as a relatively mainstream commercial animated film, The Croods sparked my curiosity to find ways to visit the past and bring yesterday’s stories into our lives today. After their cave collapses, the first Crood family has to undertake a journey to find a new home. The father, provider and leader of his pack, recounts multiple stories that urge and caution his children to follow the rules described on the cave wall and to not try anything “new”, or generally be curious for that matter. He sees newness as dangerous, with potentially serious repercussions like death. He prefers for them to dwell in the “safe” compounds of the cave in which they live. He develops “cautionary” narratives through visual means by drawing pictures on the cave walls using pigment and dirt he scoops off the ground. The animated film highlights the ways in which a pictorial expression in the form of rock markings could be enlivened in its original context of performance and story-telling, and, also, the ways in which history is forged through personal experience. The film also prompted me to reconsider the academic realm in which rock art is primarily situated in southern Africa, which is archaeology, and the possible perspectives that other disciplines could bring to bear on these materials, such as art history. My understanding of the reasons why rock art (and its copies) can and should also be considered and studied as an art form, ultimately stems from my own experience in art education. The rock art works made by the San people are encoded with “the history and culture of a society” that is “thousands of years old” and “a testament of the displaced ancient African culture and the San presence in the world” (Solomon 2005). By studying these traces as artworks, researchers, historians and archaeologists are reminded to look at the visual features, but also beyond the physical aspects of the work. They begin to consider the processes that contributed to its making, and the various interpretations and meanings that the work had in its context of production, as well as in its subsequent readings. An examination of the process of knowledge production not only draws attention to the development of artmaking and the manner in which different materials were used to create artworks, but also demonstrates the precarious nature of the meaning of rupestrian imagery. An example of this instability of meaning is evidenced by a body of oral histories relevant to the San context, starting with Joseph Orpen’s documentation (1874) of a mountain Bushman called Qing’s account of the meaning behind particular rock art panels. Thereafter, in 1911, Wilhelm Bleek and Lucy Lloyd produced Specimens of Bushmen Folklore, a book of 87 recorded legends, myths and other traditional stories of the |Xam Bushmen in their now-extinct language (Solomon 2005). These resources integrated the “spoken word” with Bushman ethnographic research and laid the foundation for how we read and write about the art today, and they also provide numerous different ways into the question of interpretation. I have utilised my previous first-hand experience as an intern at the Origins Centre, where Simone Opperman and myself worked under the guidance of Steven Sack and Lara Mallen. In working towards the exhibition titled, The Origins of Walter Battiss: “Another Curious Palimpsest”, we worked closely with the Rock Art Research Institute (RARI), and my interest in rock art and its archive grew immensely. Here, I learned of the Harald Pager archive, which is physically located at RARI. After speaking to my supervisor, Dr Justine Wintjes, and listening to the way in which she briefly recounted the story of Harald Pager, who was an active rock art recorder and researcher during the 1960s and 1970s, I wanted to learn more about the man who seemingly died for his craft. Wintjes mentioned that Pager recorded San rock art in the Drakensberg area along with his wife for many years. The Pagers relied heavily on their personal resources in order to keep the recording and documentation process going, and ended up incurring financial debt. Harald Pager was passionate about archaeology and sought to understand the rock paintings he discovered in his travels across the region, which also included what was then South West Africa (now Namibia). In one of the conversations held in the course of my Masters research, Neil Lee explained that Pager dwelled for months on end in a shelter in order to finish the copies of rock paintings he sought to record. Pager’s adamance and determination, and even his belief that he could change his metabolism, apparently led to ill health while recording rock art in the Brandberg in 1985. He died a short time later in Windhoek (Neil Lee 2018, pers. comm.). 7 Given the scale and meticulousness of Pager’s archive, and in light of the conversations I had about him, it seemed strange that his work and story are engaged with so seldom within academia. Nevertheless, Pager’s vast archive lives on in the storerooms of RARI, and now also in the digital world. His recordings were recently digitised during the course of the South African Rock Art Digital Archive (SARADA) project, which sought to scan and make more accessible the content related to southern African rock art at RARI and other institutional and private archives. With the rapid rate at which technology is developing and progressing, physical archives are being turned into digital databases, while also being supplemented by newly created digital materials. However, like all archives, digital archives are not ‘permanent’. They have their own kind of media-specific fragility. The digital archive also has the potential to become obsolete and demonstrates a different kind of limited lifespan. Although digital files are also not physically present in the same way that a physical copy or photograph is, and “lose” a particular kind of materiality and stability, they gain a virtual presence and potentially greater accessibility. As with the ‘original’ archive of rock art that exists in the landscape, the traditional paper archive and the digital archive represent different kinds of longevity and fragility, and have a complex relationship with each other. While being subject to changes and deteriorations of various kinds, the archive is important as a record of archaeological materials in the landscape, but is also a site where knowledge is produced, and the practice of science is conducted. Thus, I set out to devise a project that would address some of these interests and problems, to find connections between the present and the past, and to focus on ‘process’ across the rock art archive in the broad sense of the term. I also wanted my project to address absences and silences within the archive, embedded within the documents and copies as well as the rock art itself. I approached the archive as a layered domain that extends beyond the strictly ‘documentary’ archive, and adopted a ‘personal histories’ approach as a way of forging connections across that archive. I explain this working strategy in more detail in the ‘Methodology’ section below, but first I explore some of the conceptual elements that frame the project.Item Surgical aortopulmonary shunts - a thirty-seven year experience in a South African tertiary institution(University of the Witwatersrand, Johannesburg, 2019-11) Dladla-Mukansi, Nontobeko Charity; Cilliers, Antoinette; Mammen, Vijay; Vanderdonk, KathyIntroduction: The surgical aortopulmonary shunt is a valuable palliative procedure in the management of congenital heart diseases. There is a paucity of data regarding aortopulmonary shunts in the developing world, including South Africa. Objectives: The primary objective was to describe the demographic, clinical and echocardiographic characteristics of children between ages 0 and 14 years that underwent surgical aortopulmonary shunts. The secondary objectives were to describe trends in aortopulmonary shunt designs, outcomes in terms of morbidity and mortality, progression to definitive surgery and to assess patency of shunts. Material and Methods: A retrospective clinical audit of patient files who underwent an aortopulmonary shunt between 01 January 1980 to 30 December 2016 was undertaken at Chris Hani Baragwanath Academic Hospital (CHBAH) in Soweto, Johannesburg. The study period was divided into 3 stages and for descriptive purposes as follows: 1980-1991 refers to period 1, 1992-2003 refers to period 2 and 2004-2016 refers to period 3. Results: A total of 177 aortopulmonary shunts were done over the 37-year study period. Of these 177 patients, 165 (93.2%) patient files were available. Fifty-six percent of the patients included in the study were male. The majority of patients were from the Gauteng Province (76.8%). The four most common diagnoses across the entire study period were tricuspid atresia (26.0%), pulmonary atresia with VSD (23.7%), tetralogy of Fallot (23.2%) and complex cardiac lesions (16.9%), with no particular trend in the proportion of these diagnoses presenting across this study period. There was no statistical difference between period 1 and 2 (p-value a=0,328) and between period 1 and 3 (p-value b=0,548). The total number of all surgeries done over the entire study period was 2145, of which 8.3% were aortopulmonary shunts. Period 1 had the highest percentage [35 (10.9%)] of aortopulmonary shunts compared to the total number of surgeries performed. There was a decline in the number of aortopulmonary shunts performed over the study periods 1-3. With no statistical difference across periods as shown in table 1 with p-value a and b. Of the different types of aortopulmonary shunts, most patients [157 (88.7%)] had a modified Blalock-Taussig shunt (BTS). The remainder of the shunts included 3 (1.7%) classic BTS, 12 (6.8%) central shunts and 5 (2.8%) unknown BTS. The percentage of modified BTS done increased from 80% in period 1 to 87.3% in period 2 and to 95.2% in period 3. Period 1 had the most complications (28.6%) compared to 11.4% in period 2 and 19.1% in period 3. Sepsis as a complication following surgery increased over the study period from 2.9% in period 1 to 3.8% and 7.9% in periods 2 and 3 respectively. Early mortality was 17.1%, 26.6% and 25.4% from periods 1-3 respectively. Late mortality declined from 17.0% in period 1 to 11.4% and 0% in periods 2 and 3 respectively. Only 37 (20.9%) patients were documented to have further surgery after the initial aortopulmonary shunt. Across all three study periods, no blocked shunts were documented. Conclusions: This study describes the characteristics and outcomes of aortopulmonary shunts over a 37-year period in a tertiary care resource limited low to middle income country setting. The commonest cardiac lesions for which aortopulmonary shunts are performed are tricuspid atresia, pulmonary atresia with VSD, tetralogy of Fallot and other complex cyanotic cardiac lesions. The frequency of aortopulmonary shunts compared to total surgeries has corrective surgery for these cardiac lesions. The modified BTS is the most frequently performed aortopulmonary shunt used for palliative surgery in our setting, which is a similar trend in developed countries. The morbidity and mortality in this study is higher than developed countries, with sepsis being the most common complication. Attention to infection control practises need to be emphasized peri- and post-operatively in our hospitals.Item Customer retention strategies for the prepaid mobile telecommunications sector in South Africa(University of the Witwatersrand, Johannesburg, 2010) Flynn, Teresa; Peters, MarkThis study will propose ways in which companies can focus retention strategies in the local prepaid mobile telecommunications sector. Currently there is little academic literature on this topic, even though in-house marketing research has been done by the operators. The purpose of this research is to investigate the customer retention strategies in the prepaid mobile telecommunications sector in South Africa. This will be done by triangulation of what consumers believe is important in their retention, what the organisations deem as paramount, and what retention experts state are the motivators of retention. Data was collected using both a survey questionnaire for consumers, and through face to face interviews with marketing management at mobile telecommunications operators, as well as independent expert consultants on the topic of customer retention. The findings from this study were that the consumers want to keep the same cell phone number as it is part of their identity. The customer looks at the total offering when considering pricing, and not just certain costs, and prefers a prepaid model as spending is controlled in this manner. Both consumers and management agree that rewards and loyalty programs are seen as a value add, especially where they offer instant gratification. A reliable product is necessary for a consumer to stay with the company, as is accessibility to support and other products. Management realises that the total customer experience across all touch points is a retention enabler, with one really bad experience being enough cause for a customer to churn. The consumer survey indicated that customer service is a driver that all market players need to improve on. An organisation's brand allows a consumer to identify with the firm, and is more a pull factor than a push factor, unless it is perceived as dishonest or unethical. The only time a consumer's demographics came into play regarding customer behaviour was age making a difference was when using a cell phone to access the internet -older age brackets use it sparingly if at all. Although other value added services such as SMS and MMS are used across the board. Companies model consumer behaviour, and base it on data from previous churners to identify possible churners. Of these, only profitable churners are then recognised for retention campaigns. Retention campaigns are measured for success. The prepaid market makes up 80% of the mobile telecommunications market in South Africa, and the revenue they contribute is approximately 35% of the total. Therefore this customer base should not be neglected or ignored. Due to the demographics of emerging markets, prepaid offerings are the way of the future. The research paper finishes with several recommendations on how to enrich customer retention strategies for the prepaid mobile communication market.Item The influence of Entrepreneurial Capital on the performance of subcontracting SMMEs in Gauteng, South Africa(University of the Witwatersrand, Johannesburg, 2019-03) Rampa, Mmatsatsi; Galawe, JabulileThis study explores the prospect of entrepreneurial capital in stimulating SMME performance. It seeks to investigate the use of non-financial capital (entrepreneurial capital) in SMMEs registered under the CIDB, in the general building sector, and its influence on SMME performance. It unpacks the two dimensions of entrepreneurial capital which are entrepreneurial commitment and entrepreneurial competence. This study is a quantitative research, based on a positivism research paradigm. The survey structured research instrument was collected using Qualtrics. The primary data, with a sample size of 377, was distributed using emails and was consolidated via Qualtrics. The data analysis and interpretation was based on descriptive analysis, correlation analysis, exploratory analysis and multiple linear regression analysis. The study was initially designed to analyse the two dimensions (entrepreneurial competence and commitment) collectively with their antecedents (opportunity, relationship, conceptual, organising and strategic competencies); and (normative, continuous and affective commitment) respectively. The survey findings could not converge into a clear multi-dimensional factor structure for each construct. Hence the analysis could only be undertaken at the dimensions level without breaking them down any further into their sub-sets. Entrepreneurial competence was the only one of the two that emerged as the statistically significant predictor of SMME performance. However, both dimensions had a positive influence with business performance, though entrepreneurial commitments’ influence was weak and not statistically significant. SMME owners/managers should continuously advance and assess their specific entrepreneurial competence in order to positively influence their business performance. Policy makers, training and support programmes should align content to specific entrepreneurial competence.Item The Case of Analytic Philosophy as ‘the Philosophy’ and Its Problem for the Decolonization of the Curriculum(University of the Witwatersrand, Johannesburg, 2018) Ramaphala, Dorcus; Etieyibo, EdwinIn this research, I shall be examining two related issues. The first issue is about whether the presentation of analytic philosophy as the proper and only method of doing philosophy is justified. The second concerns the problems posed for the decolonization of the philosophy curriculum by this hegemonic and triumphant position of analytic philosophy as “the philosophy.” My motivation for engaging with these issues is to try and make the case for other philosophical traditions and methods, including African philosophy as legitimate and proper philosophical enterprises even when they do not share all or some of the traits and features of analytic philosophy. Success in making this case seems crucial to the project of decolonizing the philosophy curriculum.Item On The Nature and Rationality of Desire(University of the Witwatersrand, Johannesburg, 2018) Mtshali, Khondlo; Leon, MarkItem Men, Masculinity, Aggression and Dominance: An Exploration of How Young Men are Socialized to Deal with Situations of Man-on-Man Aggression and Dominance(University of the Witwatersrand, Johannesburg, 2019) Vilakazi, Zinhle; Davies, NickThere is a considerable body of research placing young South African men at the core of interpersonal violence. Within these studies they are frequently positioned as both perpetrators and victims of extreme and homicidal modes of aggression. In light of this gendered nature of interpersonal violence, this study was directed at exploring how young men’s responses to a situation of man-on-man aggression and dominance might be linked to how society encourages or expects a certain masculine performance from men in such situations. This study’s secondary goal was to offer some ideas about how young men might establish a masculine identity through aggression and dominance. In the pursuing research aims, a total of 14 young adult men attending university participated in this qualitative study. From the analysis what became evident was the continuous pressure that young adult men experience in society, through various social institutions, to somehow fit into dominant or hegemonic constructions of masculinity. Within the context of this study, the proximal cause of aggression and dominance was attributed to broader concerns regarding presentation of a masculine identity, self-worth and social status.Item Exploring the use of Process Drama in dialogues on Race and Memory among black ‘Born Frees’ of South Africa(University of the Witwatersrand, Johannesburg, 2018) Radebe, Tebogo; Lepere, RefiloeThis research project examines the use of Process Drama in creating dialogue about race and memory among Black Born Frees in South Africa. Process Drama was used as a dialogue facilitation tool, which involved both participants and a facilitator in role. The study further unpacks how process drama impacted participants’ attitudes on race and memory. Reflective practice is employed to interrogate how Process Drama creates empathy, to enable reflection on lived experiences, to lead to an examination of stereotypes around race and memory through constructive dialogue. The research focuses on the facilitation of improvised, episodic scenes and creation of images structured around themes of race and memory leading to post 1994 democratic South Africa. From the facilitation process, it emerged that improvisation in the dramatic action enables dialogue by allowing the participants to raise each other’s awareness by sharing various perspectives and understandings. Using a Process Recording as a tool for analysing the facilitator in action the paper makes a case for performative writing as way to present the process and findings of the research. The method of allowing the participants voices to be heard and validated began a process of healing psychological and emotional wounds among the black born frees.Item Investigating 2-hydroxypropyl-β-cyclodextrin (HPβCD) as a novel therapeutic agent for breast cancer(University of the Witwatersrand, Johannesburg, 2019) Saha, Sourav Taru; Kaur, MandeepCancer cells have an increased need for cholesterol, which is required for cell membrane integrity. Cholesterol accumulation has been described in various malignancies including breast cancer. Cholesterol has also been known to be the precursor of estrogen and vitamin D, both of which play a key role in the histology of breast cancer. Elevated cholesterol levels have been linked to breast cancer therefore depleting cholesterol levels in cancer cells can be a viable strategy for treatment. 2-hydroxypropyl-β-cyclodextrin (HPβCD) is a cholesterol depleting compound which is a cyclic amylose oligomer composed of glucose units. It solubilizes cholesterol and is proven to be toxicologically benign in humans. This led us to hypothesise that it might deplete cholesterol from cancer cells and may prove to be a clinically useful compound. Our work provides experimental evidences to support this hypothesis. We identified the potency of HPβCD in vitro against two breast cancer cell lines: MCF7 (Estrogen positive, ER+), MDA-MB-231 [Triple negative breast cancer (TNBC)], and compared the results against two normal cell lines: MRC-5 (Normal Human Lung Fibroblasts) and HEK-293 (Human embryonic kidney) using cytotoxic, apoptosis and cholesterol based assays. HPβCD treatment reduced intracellular cholesterol resulting in significant breast cancer cell growth inhibition through apoptosis. The results hold true for both ER+ and TNBC. We have also tested HPβCD in vivo in MF-1 mice xenograft model and obtained 73.9%, 94% and 100% reduction in tumour size for late, intermediate and early stage TNBC. These data suggest that HPβCD can prevent cholesterol accumulation in breast cancer cells and is a promising anti- cancer agent