Showing items 1 - 20 of 35

A digital transformation framework for municipalities in the Eastern Cape

- Luke, Lamla Lonwabo Leadley

  • Authors: Luke, Lamla Lonwabo Leadley
  • Date: 2023-12
  • Subjects: Internet in public administration , Information technology -- Political aspects , Electronic government information
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10948/62506 , vital:72779
  • Description: Digital transformation (DT) integrates technology into all business areas, fundamentally changing how businesses operate and deliver value to their clients. It is also a cultural change that requires organisations to continually challenge the status quo, experiment and get comfortable with change. Smart Municipalities in South Africa have various challenges concerning integrating services and information flow among departments within the municipalities, thus preventing the creation of value for the citizens. The ongoing digital transformation revolutionises urban development and governance, offering opportunities for enhanced citizen services, resource optimisation, and sustainable growth. However, the complexity of implementing smart city initiatives demands a structured approach. Due to urbanisation, municipal management in developing nations must deal with issues like increased energy consumption, pollution, the disposal of toxic wastes, resource depletion, ineffective management of urban infrastructures, ineffective planning processes, overloaded transportation networks, endemic congestion, as well as social inequality and socioeconomic disparity. The extent of digital adoption in the South African province of the Eastern Cape has provided municipalities with a learning opportunity to change into data-driven Smart Municipalities in order to increase productivity, growth, employment, and the need for people with a variety of skills. This study required a review of the literature to examine digital transformation, Smart Municipalities, Smart Municipalities at national and international levels, and Smart Municipality models. The literature review also helped to create a Smart Municipality conceptual model. Data for this study were collected in four Eastern Cape municipalities, namely: DR. AB. Xuma, Enoch Mgijima, Intsika Yethu Local municipalities, and their critical stakeholder Chris Hani District Municipality. The population was all municipal workers, including Municipal Managers, Councillors, Executive Management, ICT officials, Unit Managers, Computer Users and other municipal employees who were using IT to do their job responsibilities within the municipalities. This research study followed a positivistic approach using quantitative methods of analysis. Accordingly, the conceptual model was hypothesised and tested using a questionnaire to collect data and the data were statistically analysed. The study followed a descriptive research designwith a quantitative approach. Various statistical analyses were conducted, including descriptive statistics, reliability and validity metrics of the research instrument, correlation coefficients and Exploratory Factor Analysis (EFA). South Africa has provided municipalities with a learning opportunity to change into data-driven Smart Municipalities to increase productivity, growth, and employment supported by the need for people with a variety of skills. A Value Alignment Smart City Stakeholder (VASCS) model was created in previous research and identified nine dimensions of a smart city, namely Smart Economy, Smart Environment, Smart Governance, Smart Living, Smart Mobility, Smart Organisation, Smart People, Smart Policies and Smart Technology. Due to lack of DT framework and guidelines that guides municipalities on how they can adopt Smart Municipality concept, the objective of this study was to propose and evaluate a Value Alignment Smart Municipality Stakeholder (VASMS) model for municipalities in the Eastern Cape. The nine dimensions were empirically evaluated by stakeholders in four Eastern Cape municipalities. The results depict a change towards the importance of developing a Smart Municipality in the four municipalities, while following appropriate planning, designing, management, operations and governance guidelines. The respondents regarded the smart policy dimension as the most important dimension in the proposed VASMS model. This study further provided practical guidelines for the adoption of smart municipalities in the Eastern Cape Province of South Africa. This proposed VASMS model aims to address the unique challenges faced by municipalities in the Eastern Cape as they embark on their digital transformation journey. It outlines a stepby- step process encompassing strategic planning, technological integration, stakeholder engagement, and governance restructuring. Moreover, it emphasises the importance of fostering a collaborative ecosystem between government agencies, private sector partners, and citizens. By offering this VASMS model, this research contributes to the advancement of Smart Municipality initiatives in the Eastern Cape, ultimately paving the way for more efficient, resilient, and citizen-centric urban environments. , Thesis (MCom) -- Faculty of Science, School of Computing Sciences, 2023
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  • Date Issued: 2023-12

An analysis of inland fisheries resource use in the Eastern Cape, South Africa

- Matam, Ncumisa Yanga

  • Authors: Matam, Ncumisa Yanga
  • Date: 2022-10-14
  • Subjects: Fisheries South Africa Eastern Cape , Fishery law and legislation South Africa Eastern Cape , Small-scale fisheries South Africa Eastern Cape , Small-scale fisheries Social aspects South Africa Eastern Cape , Small-scale fisheries Economic aspects South Africa Eastern Cape , SADC Inland Fisheries Sector , Subsistence fishing South Africa Eastern Cape , Draft Inland Fisheries Policy (South Africa)‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232215 , vital:49972
  • Description: South Africa’s Draft Inland Fisheries Policy identifies inland fisheries as an opportunity for socio-economic benefits such as jobs, food security and economic development, based on small-scale fishing and recreational value chains. Using roving creel surveys, this study examined various fishing groups in publicly accessible dams in both an urban and a rural settlement in the Makana Municipal area, Eastern Cape, South Africa. While inland fisheries are particularly relevant for rural communities, there is very little information on the current use of these resources, irrespective of inland fisheries’ importance. This thesis presents a conceptual framework for a study that: (1) reviews available information of inland fisheries and development attempts in South Africa; (2) provides an assessment of the use of inland fisheries on publicly accessible dams in the Makana Municipal area and (3) evaluates case studies of current and past utilization of selected inland fisheries initiatives in the Eastern Cape. The results of this project provide insights into the current conditions and development potentials of inland fisheries in the Eastern Cape. There was a difference in species composition between the dams, but no difference in the CPUE between dams. For example, in Grey dam many species were present, but as the dam size is only one hectare, this would result in an estimated yield harvest of only 207 kg/ha/year. Anglers were encountered at all dams, although fish were only retrieved by anglers in the rural dams of Committees Drift. Dam usage in the rural area was mostly subsistence angling, and this was significantly greater than in the urban area. Subsistence fishers utilised the fish to sustain themselves and their families and for better livelihoods. Anglers from outside the area tended to utilise the dam for recreational angling. Dams found in the urban area were also mostly used by subsistence anglers, though there were a few uses for aesthetic purposes. The urban dams were also utilised recreationally (picnics, year-end functions, swimming), as opposed to the rural dams which were only used for angling. A total of 10 interviews were administered to key respondents in the form of a questionnaires to determine the importance of the fisheries to them. Catch documented from the questionnaires, interviews and logbooks constituted 1238 species and 978 020 kg. Of all the anglers encountered from the interviews, the gill net catch species varied by dam. The fate of fish caught by anglers was dependent on employment status, with most unemployed anglers selling their fish for income and most employed anglers consuming their catch. The findings show that dams were used mostly by small-scale fishers and recreational anglers. Ichthyological surveys revealed that popular fish harvested were moggel, common carp, largemouth bass and Mozambique tilapia. The results are discussed in the context of appropriate development of fisheries in small dams in the province, with recommendations to continue monitored surveys to better inform the inland fisheries policy. The findings from this thesis show that having small scale fisheries in place and providing good access to the dams is essential for rural populations, in turn, providing better livelihoods through hunger alleviation and generating household income. , Thesis (MSc) -- Faculty of Science, Environmental Science, 2022
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  • Date Issued: 2022-10-14

Visualisation processes in teaching patterns and their generalisation: perceptions and experiences from senior phase mathematics teachers

- Chatima, Simon

  • Authors: Chatima, Simon
  • Date: 2022-04-08
  • Subjects: Visual learning South Africa Eastern Cape , Mathematics Study and teaching (Secondary) South Africa Eastern Cape , Mathematics teachers South Africa Eastern Cape Attitudes , Sequences (Mathematics) Study and teaching (Secondary) South Africa Eastern Cape , Constructivism (Education) South Africa Eastern Cape , Mathematics teachers In-service training South Africa Eastern Cape , VIPRO MATHS Project‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232936 , vital:50039
  • Description: This study investigated how senior phase mathematics teachers used visualisation approaches to teach patterns and their generalisation as a result of an intervention programme. This project is an integral component of the VIPRO MATHS Project and one of a number of post-graduate research projects which has a particular focus on visualisation processes in mathematics education in the Southern African region. This case study of Senior Phase mathematics teachers in the Chris Hani West District (CHW) in the Eastern Cape Province of South Africa used a social constructivist theory. The study is grounded within an interpretive paradigm explanatory qualitative method design. It surveyed thirty-seven Senior Phase mathematics teachers from schools in the CHW district to get an idea of how teachers teach patterns and their generalisation, prior to an intervention process. After the survey, nine teachers were purposively selected to take part in an intervention programme. They were then observed (teaching) and interviewed to get their perceptions about what factors enable and/or constrain the teaching of patterns and their generalisation when visualisation approaches were used. The data from the survey questionnaire responses, the lesson observations and the interviews were analysed qualitatively. The findings from the survey questionnaire responses revealed that teachers in CHW district value the use of visualisation approaches, although they used visuals to teach patterns in a way that lacked depth, skill and rigor prior to the intervention. Challenges such as difficulty in keeping abreast with the prescribed syllabus, the lack of resources, time constraints, and the limited knowledge of algebra learners have for successfully transferring pictorial representations to symbolic presentations, emerged from the survey data. This necessitated the need for an intervention which focused on the use of a variety of visual strategies and tools to teach patterns and their generalisation effectively. Data from lesson observations showed that all observed participant teachers used visuals to generate image- related questions and created platforms for lively classroom discussions. The teachers used the generated questions to build on learners’ prior knowledge and to promote learner understanding of pattern dynamics that stem from pictorial representations. The data from the interviews revealed that teachers’ perceptions had drastically changed after the intervention. This was because they were now equipped and empowered to effectively make use of visual strategies that enabled them to: build on learners’ prior knowledge, to manipulate visuals for the purpose of prompting learning, develop cognitive perception in learners, cultivate learner innovation and originality and enhance problem solving techniques. This study concludes that the use of visuals enhanced conceptual teaching of patterns and their generalisation in the observed participants. This has the potential to provide mathematics education researchers and curriculum developers with a strong basis to include visualisation processes and strategies into the design of policy documents and to initiate further research efforts. The implications for the teachers are that learners need to be taught ways to create and interpret visual representations in order to understand the dynamics of transferring a pictorial pattern to its resultant symbolic representation expressing pattern regularity. It is also hoped that the results of this study will be utilised by mathematics subject advisers and teacher training institutions to improve the teaching of patterns and their generalisation. , Thesis (MEd) -- Faculty of Education, Education, 2022
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  • Date Issued: 2022-04-08

Alcohol use among women attending antenatal care in Buffalo City, Eastern Cape

- Bredenkamp, Petrus Johannes

  • Authors: Bredenkamp, Petrus Johannes
  • Date: 2022-04-07
  • Subjects: Uncatalogued
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/234358 , vital:50188
  • Description: Alcohol use during pregnancy is known to cause neurodevelopmental disorders in offspring, known as Fetal Alcohol Spectrum Disorders (FASD). High prevalence of FASD has been observed in certain parts South Africa, but many areas of the country remain unstudied, and factors contributing to drinking among pregnant women are poorly understood. This study surveyed 1099 women attending antenatal care at public primary healthcare facilities in the Buffalo City Metropolitan Area in the Eastern Cape. Data was collected using the Alcohol Use Identification Test, a 10-item self-report measure of drinking behaviour in isiXhosa, English, and Afrikaans. Factors associated with alcohol use, risky drinking, binge drinking, and hazardous/harmful drinking were identified using logistic regression. A minority of the sample reported alcohol use (64%). Among those reporting alcohol use, most reported occasional binge drinking (63%) and met criteria for risky drinking (59%) and hazardous/harmful drinking (52%). Living with a regular drinker was significantly associated with alcohol use (OR 1.98, 95% CI 1.51 – 2.58), risky drinking (OR 2.03, 95% CI 1.49 – 2.76), binge drinking (OR 2.21, 95% CI 1.64 – 2.97), and hazardous/harmful drinking (OR 2.0, 95% CI 1.41 – 2.99). However, women who were married/cohabiting were less likely to report alcohol use (OR .71, 95% CI .53 - .95). Experiencing intimate partner violence during the current pregnancy was associated with alcohol use (OR 2.42, 95% CI 1.38 – 4.27) and hazardous/harmful drinking (OR 2.62, 95% CI 1.32 – 5.22). In this study, women who identified as Coloured were more likely to report alcohol use than Women who identified as African (OR 2.74, 95% CI 1.4 – 5.36). These findings simultaneously provide evidence of problematic drinking among pregnant women in a previously understudied area and show that external factors affect women’s drinking behaviour during pregnancy. Interventions aimed at reducing the incidence of FASD should consider alcohol use by pregnant women in the context of their lived experiences. , Thesis (MA) -- Faculty of Humanities, Psychology, 2022
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  • Date Issued: 2022-04-07

Diski 9 Nine and Other Stories (and Things)

- Mahlabe, Stoffel Seshia

Magnitude

- Seddon, Deborah Ann

  • Authors: Seddon, Deborah Ann
  • Date: 2022-04-07
  • Subjects: Creative writing (Higher education) South Africa , Zimbabwean poetry (English) 21st century , Diaries -- Authorship , Polish literature 21st century History and criticism , English poetry 20th century History and criticism , English literature Irish authors History and criticism , American poetry 21st century History and criticism
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/234400 , vital:50192
  • Description: My thesis is a collection of lyric, narrative, and prose poetry directed towards two forms of death – physical death and the disavowal of the self. Many poems focus on the death of my mother, and the work required after loss to sort through a family’s life in my Harare childhood home. This associative exploration draws together childhood memories, encounters with physical objects, letters, and songs, as well as with the city and its people. Tadeusz Rózewicz’s Mother Departs has influenced my approach to writing of my mother’s death, particularly how to grant her a voice in the telling. I also draw on the poetry of Harmony Holiday and Pascal Petite, in their attention to the complexities and emotional dangers of the mother-daughter bond. Other poems draw on the work of Adrienne Rich, Audre Lorde, Judy Grahn, Ocean Vuong, and Saeed Jones, in terms of imagining queer life into poetry, the use of the erotic as a means of empowerment, and developing a queer political identity, to examine various aspects of queer love, including the heartaches associated with self-denial. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
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  • Date Issued: 2022-04-07

Needs assessment for gender-sensitive training in substance use disorder treatment for gender-nonconforming people

- Tao, Lane

  • Authors: Tao, Lane
  • Date: 2022-04-07
  • Subjects: Discrimination in mental health services , Substance abuse Psychological aspects , Substance abuse Social aspects , Substance abuse Treatment , LGBTQ+ people Psychology , LGBTQ+ people Mental health services , Gender mainstreaming , Psychiatric ethics
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/234339 , vital:50187
  • Description: Research suggests that queer people face both general discrimination and inadequate support in substance use disorder (SUD) treatment. One recommendation made by scholarship to address this is to improve the treatment capabilities of practitioners, thus improving practitioner readiness and reducing access barriers for a potentially at-risk population. The purpose of this study is to explore SUD treatment practitioners’ experiences of treating queer clients and identify their training needs. Semi-structured interviews were conducted with seven registered mental healthcare practitioners operating in Cape Town, South Africa. Data was analysed via thematic analysis, using a social constructionist approach to gender and practitioner knowledge. The findings reflect a strong interest in gender-sensitive training to better prepare practitioners for treating queer clients. Participants provided feedback on areas in need of improvement and made recommendations on how training should be conducted. Findings indicate that queer clients may enter treatment with a high burden of trauma due to discrimination, and that healthcare structures abiding by a binary approach to gender may not be able to address queer people’s diverse needs. Recommendations for future research are made, with particular emphasis on including queer people in surveillance data. Target areas for training programmes are described, with emphasis on terminological understanding and accessibility of training. , Thesis (MA) -- Faculty of Humanities, Psychology, 2022
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  • Date Issued: 2022-04-07

Pink Concrete

- Curr, Jill Alexandra

  • Authors: Curr, Jill Alexandra
  • Date: 2022-04-07
  • Subjects: Creative writing (Higher education) South Africa , Diaries -- Authorship , South African fiction (English) 21st century , English fiction History and criticism , Nigerian fiction (English) History and criticism , Argentine fiction History and criticism , Angolan fiction (Portuguese) History and criticism
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232388 , vital:49987
  • Description: (From Reader Report Reflection) - I started this course believing I was not a writer. I knew that I loved to write, I knew that it was innate to how I perceived the world. I had written a novel previously, it was an outpouring, uncontrollable imagination spew. I was often scared and doubted myself throughout writing it, but I took comfort in my reading. I picked up all the classics, modern and old, rewriting the words into notebooks alongside my own, retracing the sounds, the rhythms, the symbols and their little links, the pauses. I collected pieces rereading them with reverence, my fingers curling over the lines sunken into the page. I didn’t understand what I was doing, it felt natural to hide in the skirts of other writers peering behind the curtain to see how they built the illusion. And yet, even after finishing my novel I still didn’t think I was a writer; it was a hobby, it was something extra to me, a backpack I could take off and on. I denied what was innate, and said it was not that important to me. I applied for this Master’s in Creative Writing (MACW)7 course because I wanted external validation on my first novel and an application was probably the only way, I was going to get someone to read it. It is sad and stunted that I needed this external validation to believe I could try, to believe that I could learn to control this compulsion, to believe that I could become a writer. In our first course contact week,8 lecturers and supervisors kept saying again again that we were already writers, that this is what we are. I was scared of this, that they would find out I was not really meant to be here. Writing, taking those solitary thoughts that are too much for my skull and making them real, something tangible; this is how I move through my existence. I take pieces of myself and paste them to the page, otherwise the thoughts build up like snow around a car until you are suffocating in an icebox. And by removing this part of myself to just a hobby, a silly backpack that I can pick up and put down, was just me running away. This MACW course gave me the tools to tap into what I am, that I have a why that I must write to and that I have an audience for this why. By sharing pieces of myself, I make them real again, something I can study, tracing their edges, their dark underbelly, the light hillocks. I sat with my fear for two years slowly, piece by piece, cracking it open. I learnt to love my voice and believe in it without needing external validation, without needing the gold star of acceptance, because I accept and love what I am trying to build with my writing. , Thesis (MACW) -- Faculty of Arts, School of Languages and Literatures, 2022
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  • Date Issued: 2022-04-07

Service dogs for Autism Spectrum Disorder: the experiences of caregivers in South Africa

- Martin, Emma Jeanne

  • Authors: Martin, Emma Jeanne
  • Date: 2022-04-07
  • Subjects: Autism spectrum disorders South Africa , Service dogs South Africa , Animals Therapeutic use South Africa , Caregivers South Africa , Animals Therapeutic use Public opinion , Animal welfare South Africa , Children with autism spectrum disorders South Africa
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232855 , vital:50032
  • Description: Autism spectrum disorder (ASD) is a neurodevelopmental disorder, most frequently diagnosed in childhood, with symptoms including deficits in social communication and interaction as well as restricted, repetitive patterns of behaviours, interests and activities. There is no known cure for ASD, with current treatment methods focussing upon reducing symptom severity. One such treatment method is the use of autism service dogs. Internationally, autism service dogs have been available for over two decades, while in South Africa they have only been available since 2015. A fair amount of internationally published data is available on autism service dogs, however, at the time of this research study, no data was available within South Africa. This study aimed to provide a baseline for research on autism service dogs within South Africa, by documenting the experiences of caregivers whose ASD children had been supplied with autism service dogs, with regard to the uses, effects, accessibility and public perception of the autism service dogs, as well as recommendations for future improvements of autism service dogs within South Africa. Lastly, inquiry into the welfare of the autism service dogs was sought. This study was qualitative in nature, with eight families who had been supplied with autism service dogs having chosen to participate. Data collection was achieved through one semi-structured interview with each family, which was then transcribed and thematically analysed using a hermeneutic phenomenological approach. Results indicated that autism service dogs were perceived as generally accessible, useful and beneficial for ASD children and their caregivers in a variety of ways, however, they were not without their challenges, with lifestyle adjustments and public perception being especially problematic. Participants also noted recommendations for possible future improvements. Lastly, welfare concerns for the autism service dogs relating to violent behaviour exhibited by ASD children was identified, raising the question of the suitability of service dogs for the ASD population. , Thesis (MA) -- Humanities, Psychology, 2022
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  • Date Issued: 2022-04-07

Skipping stones

- Le Roux, Jade-Eden

  • Authors: Le Roux, Jade-Eden
  • Date: 2022-04-07
  • Subjects: Creative writing (Higher education) South Africa , South African fiction (English) 21st century , Suicide in literature
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/234389 , vital:50191
  • Description: My thesis takes the form of a novella exploring suicide and the unanswered questions it leaves. The main protagonist is a young girl who struggles to come to terms with her best friend’s suicide. The work is situated in contemporary South Africa, where inequality and depression is rife, especially among young people, and social media too often provides a smokescreen to conceal emotions. My writing is motivated by my desire to explore the human condition and the world around me, through my own subjective lens of experience. By working between fact and fiction I seek to trouble conventional narratives attached to suicide and highlight the subjectivity of truth. I am influenced by Lydia Davis's ability to write obliquely about loss, and her light-handed approach to emotionally charged topics; Susan Steinberg's dark motifs, vivid imagery, and her fragmented narrative that captures the characters’ responses to trauma and interrogates the notion of truth; Lidia Yuknavitch's cinematic imagery and immediacy of tone and compact storytelling; and Kate Zambreno's poetic prose that lends itself to clear societal commentary. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
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  • Date Issued: 2022-04-07

Talk in online video games: study of how the use of jargon, social interaction, and representation in Overwatch affects the ability of women to immerse themselves in these spaces

- Stander, Emily

  • Authors: Stander, Emily
  • Date: 2022-04-07
  • Subjects: Internet games Social aspects , Video gamers Language , Women video gamers , Cyberbullying , Online hate speech , Online trolling , Online chat groups , Women Social conditions , Women Sociological aspects , Overwatch (Video game) , Internet games Sex differences , Sex discrimination against women
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232477 , vital:49995
  • Description: This thesis investigates the impact on women of aggressive, demeaning and blaming talk in the online video game* space. The objective is to understand how players talk to each other and how this kind of talk presents issues for women trying to enter the online gaming sphere and become recognised as players. The main method was participatory observation and interviews with women who have experienced such talk. Key results which came from this research is that the process of keeping specific people out of communities through different means of talk - gatekeeping, women being viewed as objects of sexual gratification for men through bad representation in video games and media and using women as scapegoats for frustration and blame in the competitive online video game space, are the main issues which arise from the way players communicate with each other. In conclusion, the research presented that there needs to be an effective system of unlearning and relearning these behaviours in communities and a change in the way women are represented and seen in media is necessary in order to change the behavioural patterns which exist in gaming culture. , Thesis (MA) -- Faculty of Humanities, Journalism and Media Studies, 2022
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  • Date Issued: 2022-04-07

The mountain’s calling

- Mabeba, Motlatjo Ahsley

The narratives of women in South Africa who use social media to talk about gender-based violence

- Walton, Donica Jasmin

  • Authors: Walton, Donica Jasmin
  • Date: 2022-04-07
  • Subjects: Women Violence against South Africa , Social media and society South Africa , Internet and activism South Africa , Discourse analysis, Narrative , Internet and women South Africa , Subject positions‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232590 , vital:50005
  • Description: There has been research conducted, both globally and in South Africa, on social media activism against gender-based violence (GBV). However, most research on the topic is based on participants in other parts of the world. Not much has been published on Black, African women. More specifically, not much is known about how women in South Africa experience using social media to talk about GBV. This research project draws on critical feminism and a narrative-discursive approach to explore the narratives of women in South Africa who use social media to talk about GBV. This is done by identifying the discourses women draw on to construct narratives, the subject positions utilised within these discourses, and how “trouble” and “repair” features in the narratives and positioning of women. Twelve interviews were conducted with women who volunteered and fit the inclusion criteria. The analysis of data was presented in two parts. The first set of discourses (discourses of ‘efficacy’, ‘convenience’, and ‘education’) were focused on what the use of social media achieves irrespective of the topic being discussed. These discourses speak to the idea that social media is powerful and useful because of its reach, speed, immediacy, and ability to be used to educate and be educated. The second set of discourses (discourses of ‘community and solidarity’, ‘validation’, and ‘vulnerability’) were focused on what the use of social media does for the people participating. Women have found a community and solidarity, and their experiences and thoughts have been validated on social media. Overall, the women in this research project justified their use of social media for activism against GBV, and acknowledged the tension that exists because despite its potential, there are limitations. , Thesis (MSocSci) -- Faculty of Humanities, Psychology, 2022
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  • Date Issued: 2022-04-07

The self and the impossible pursuit of justice in J.M. Coetzee’s "Waiting for the barbarians, disgrace and foe”

- Swanepoel, Elbie

  • Authors: Swanepoel, Elbie
  • Date: 2022-04-07
  • Subjects: Coetzee, J M, 1940- Criticism and interpretation , Coetzee, J M, 1940- Waiting for the barbarians , Coetzee, J M, 1940- Disgrace , Coetzee, J M, 1940- Foe , Ethics in literature , Deconstruction , Postmodernism (Literature) , Justice in literature
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232294 , vital:49979
  • Description: In its engagement with J.M. Coetzee’s Waiting for the Barbarians, Disgrace and Foe, this thesis explores how the philosophies of Emmanuel Levinas and Jacques Derrida can be used as a framework for understanding the self’s relationship with the other. In contrast to postcolonial readings of these texts, this thesis does not consider the separation between the self and the other in terms of social or cultural differences but rather the radical alterity of the other that is perceived in the face-to-face encounter. This study aims to illustrate how the engagement with alterity exposes the instability of the self’s structures of knowledge that, in these instances, are grounded in the Western metaphysical tradition. The effects of the self’s encounter with the other are seen in the personal transformation of Coetzee’s protagonists whose initial flaws and problematic worldviews are revealed in the context of the injustices done to the other. Furthermore, the study examines the extent to which the self is complicit in the suffering of the other and how this ultimately complicates their pursuit of justice for them. While the focus of this thesis is primarily on the characters, it also shows how the writer’s careful treatment of otherness functions to confront and engage the reader with the alterity of the other and the ethical dilemmas inherent in attempting to conceptualise it. The study concludes that the protagonists’ engagement with others and their subsequent confrontation with themselves lead them to consider what an ethical response to the other might be. This ethical turn results in positive change, however ambiguously, in their thoughts about and behaviours toward other beings. , Thesis (MA) -- Faculty of Humanities, English Language and Linguistics, 2022
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  • Date Issued: 2022-04-07

A multispectral and machine learning approach to early stress classification in plants

- Poole, Louise Carmen

  • Authors: Poole, Louise Carmen
  • Date: 2022-04-06
  • Subjects: Machine learning , Neural networks (Computer science) , Multispectral imaging , Image processing , Plant stress detection‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232410 , vital:49989
  • Description: Crop loss and failure can impact both a country’s economy and food security, often to devastating effects. As such, the importance of successfully detecting plant stresses early in their development is essential to minimize spread and damage to crop production. Identification of the stress and the stress-causing agent is the most critical and challenging step in plant and crop protection. With the development of and increase in ease of access to new equipment and technology in recent years, the use of spectroscopy in the early detection of plant diseases has become notably popular. This thesis narrows down the most suitable multispectral imaging techniques and machine learning algorithms for early stress detection. Datasets were collected of visible images and multispectral images. Dehydration was selected as the plant stress type for the main experiments, and data was collected from six plant species typically used in agriculture. Key contributions of this thesis include multispectral and visible datasets showing plant dehydration as well as a separate preliminary dataset on plant disease. Promising results on dehydration showed statistically significant accuracy improvements in the multispectral imaging compared to visible imaging for early stress detection, with multispectral input obtaining a 92.50% accuracy over visible input’s 77.50% on general plant species. The system was effective at stress detection on known plant species, with multispectral imaging introducing greater improvement to early stress detection than advanced stress detection. Furthermore, strong species discrimination was achieved when exclusively testing either early or advanced dehydration against healthy species. , Thesis (MSc) -- Faculty of Science, Ichthyology & Fisheries Sciences, 2022
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  • Date Issued: 2022-04-06

Adolescents and coaches/trainers perspectives of ergogenic sports supplement use within South African private high schools

- Butler, Nicholas John

  • Authors: Butler, Nicholas John
  • Date: 2022-04-06
  • Subjects: Dietary supplements , Energy metabolism , Teenagers South Africa , Teenagers Physiology South Africa , Teenagers Substance use South Africa , Coaches (Athletics) South Africa , Athletic trainers South Africa , Private schools South Africa , Ergogenic aids‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232443 , vital:49992
  • Description: Sports supplements, also referred to as ergogenic aids, are used because of the assertion that they can enhance physical or athletic performance and/or physical appearance. Commonly used sports supplements include creatines, proteins, amino acids, stimulants, and in some cases pro-hormones. There is a relatively high and increasing prevalence of sports supplement use by the general population globally and in South Africa, particularly among adolescents and young adults due to various factors. While some research has explored supplement use among adolescents in a school setting, no study has explored this across the private school system in South Africa. Additionally, given the important role that coaches/trainers play in adolescent development, it is critical to also understand the role that they play regarding adolescent supplement use, given that there has been limited research around this topic in South Africa. Therefore, there were two aims of this study; Firstly, this study explored the prevalence and perceptions (knowledge; attitudes; beliefs) of sports supplements among South African private high school adolescents. Secondly, this study explored the perceptions (knowledge; attitudes; application of knowledge) towards sports supplements among adolescent coaches/trainers in South African private high schools. Considering the dual aim of this study, this thesis was structured as a two-part research study. Both parts took the form of a cross-sectional design, using an online questionnaire to collect qualitative and quantitative data. In total, a cohort of n=50 adolescents and n=49 coaches/trainers participated. Adolescent participants reported a high prevalence of sports supplement use (62%) with their main reasons for using them being recovery and performance. Adolescents were primarily influenced/advised by friends and coaches/trainers to start using sports supplements. Coaches/trainers primarily relied on other coaches/trainers and internet advertising/sites as a main source of information. Less than half of the participants from both groups reported having any formal education or training related to sports nutrition or sports supplements. Both groups thought that these products are being misused by adolescents, which may account for why a portion of the adolescent participants reported experiencing adverse side-effects from using sports supplements, and a few coach/trainer participants reported witnessing this in their practice. This may be a result of the professionalisation of school sport which places pressure on athletes and their coaches/trainers to perform and may in turn be the reason why some adolescents reported that they would use, and some coaches/trainers reported they would recommend the use of sports supplements even if they were aware of risk/dangers involved. Thus, there is a need for education/training among South African high school adolescents and their coaches/trainers with respect to the use of sports supplements, so that they can make informed decisions from reliable sources of information or advice in order to use these products safely and effectively. , Thesis (MSc) -- Faculty of Science, Human Kinetics and Ergonomics, 2022
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  • Date Issued: 2022-04-06

Influence of argon ion implantation on the thermoluminescence properties of aluminium oxide

- Khabo, Bokang

  • Authors: Khabo, Bokang
  • Date: 2022-04-06
  • Subjects: Aluminum oxide , Thermoluminescence , Ion implantation , ‎Kinetic analysis , ‎Oxygen vacancies , Argon , Irradiation
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/234220 , vital:50173
  • Description: The influence of argon ion implantation on the thermoluminescence properties (TL) of aluminium oxide (alumina) was investigated. Aluminium oxide (Al2O3) samples were implanted with 80 keV Ar ions. An unimplanted sample and samples implanted at fluences of 1×1014, 5×1014, 1×1015, 5×1015, 1×1016 Ar+/cm2 were irradiated at a dose of 40 Gy and heated at a rate of 1°C/s using a Risø reader model TL/OSL-DA-20 equipped with a Hoya U-340 filter. The thermoluminescence glow curves showed five distinct peaks with main peaks at 178°C, 188°C, 176°C, 208°C, 216°C and 204°C for the unimplanted sample as well as implanted samples. The peak positions of the samples were independent of the irradiation dose suggesting that the samples were characterised by first order kinetics. This was also confirmed by the TM-TSTOP analysis. It was observed that the TL intensity decreases with fluence of implantation. This observation suggests that the concentration of electron traps responsible for thermoluminescence decreases with ion implantation. The decrease in electron concentration might be due to the formation of non-radiative transition bands or the creation of defect clusters and extended defects following the ion implantation and ion fluence increases. The stopping and range of atoms in matter (SRIM) program was used to correlate the TL response of Al2O3 with defects under ion implantation. Subsequent to ion implantation, it was found that the number of oxygen vacancies which are related to electron traps are higher than the number of aluminium vacancies. Kinetic analysis was carried out using the initial rise, Chens peak shape, various heating rate, the whole glow curve, glow curve fitting and the isothermal decay methods. The activation energy was found to be around 0.8 eV and the frequency factor to be of the order 108 𝑠−1 regardless of the implantation fluence. This means that argon ion implantation did not affect the nature of electron traps. The dosimetric features of samples were also investigated at doses in the range of 40 – 200 Gy. Samples generally showed a superlinear response at doses less than 140 Gy and sublinear response at doses higher than 160 Gy. , Thesis (MSc) -- Faculty of Science, Physics and Electronics, 2022
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  • Date Issued: 2022-04-06

Large and multi scale mechanistic modeling of Diels-Alder reactions

- Isamura, Bienfait Kabuyaya

  • Authors: Isamura, Bienfait Kabuyaya
  • Date: 2022-04-06
  • Subjects: Computational chemistry , Diels-Alder reaction , Python (Computer program language) , ‎Reaction force theory , Fullerenes , Diolefins , AMADAR (Automated workflow for Mechanistic Analysis of Diels-Alder Reactions , ONIOM‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232317 , vital:49981
  • Description: The [4+2] cycloaddition reaction between conjugated dienes and substituted alkenes is known as the Diels-Alder (DA) reaction, in honor of two German chemists, Otto Diels and Kurt Alder, who first reported this marvelous chemical transformation. The DA reaction is one of the most popular reactions in organic chemistry, allowing for the regio- and stereospecific establishment of six-membered rings with up to four stereogenic centers. This pericyclic reaction has found many applications in areas as diverse as natural products chemistry, polymer chemistry, and agrochemistry. Over the past decades, the mechanism of the Diels-Alder (DA) reaction has been the subject of numerous studies, dealing with questions as diverse as the mechanistic pathway, the synchronicity, the use of catalysts, the effect of solvents and salts, etc. On the other hand, as an example, fullerenes (and particularly [60] fullerene) have been found to act as good dienophiles in DA reactions to the extent that many functionalized fullerenes with interesting applications are still synthesized by reacting C60 with dienes. However, despite the very abundant literature about the mechanism of the DA reaction, some pertinent questions have been still pending, including, without being restricted to, the prediction of transition state (TS) geometries and the modeling of DA reactions involving large systems, such as those of C60 fullerene. It must be emphasized that TSs are not easy to predict and the main reason is that many existing algorithms require that the search is initiated from a good starting point (guess TS), which must be very similar to the actual TS. This problem is even more difficult when many TSs are to be located as may be the case in large-scale studies. Moreover, due to the large size of the C60 molecule, the usage of accurate high-level computational methods in the investigation of its reactivity towards dienes is computationally costly, implying the need to find the best threshold between accuracy and computational cost. Therefore, the present study was carried out to contribute to solving the problems of large-scale prediction of DA transition state geometries and the multi-scale modeling of C60 fullerene DA reactions. To address the first problem (large-scale prediction of TSs), we have developed a python program named “AMADAR”, which predicts an unlimited number of DA transition states, using only the SMILES strings of the cycloadducts. AMADAR is customizable and allows for the description of intramolecular DA reactions as well as systems resulting in competing paths. In addition, The AMADAR tool contains two separate modules that perform reaction force analyses and atomic decomposition of energy derivatives from the predicted Intrinsic Reaction Coordinates (IRC) paths. The performance of AMADAR was assessed using 2000 DA cycloadducts and showed a success rate of ~ 95%. Most of the errors were due to basis set inconsistencies or convergence issues that we are still working on. Furthermore, a set of 150 IRC paths generated by the AMADAR program were analyzed to get insight into the (a)synchronicity of DA reactions. This investigation confirmed that the reaction force constant 𝜅 (second derivatives of the system energy with respect to the reaction coordinate) was a good indicator of synchronicity in DA reactions. A close inspection of the profile of 𝜅 has enabled us to propose an alternative classification of DA reactions based on their synchronicity degree, in terms of (quasi)-synchronous, moderate asynchronous, asynchronous, and likely two-steps DA reactions. Natural population analyses seemed to indicate that the global maximum of the reaction force constant could be identified with the formation of all the bonds in the reaction site. Finally, the atomic resolution of energy derivatives suggested that the mechanism of the DA reaction involves two inner elementary processes associated with the formation of each C-C bond. A striking mechanistic difference between synchronous and asynchronous DA reactions emerging from this study is that, in asynchronous reactions, the driving and retarding forces are mainly caused by the fast and slow-forming bonds (elementary process) respectively, while in the case of synchronous ones both elementary processes retard and drive the process concomitantly and equivalently. Regarding the DA reaction of C60 fullerene that was considered to illustrate the problem of multiscale modeling, we have constructed 12 ONIOM2 and 10 ONIOM3 models combining five semi-empirical methods (AM1, PM3, PM3MM, PDDG, PM6) and the LDA(SVWN) functional in conjunction with the B3LYP/6-31G(d) level. Then, their accuracy and efficiency were assessed in comparison with the pure B3LYP/6-31G(d) level considering first the DA reaction between C60 and cyclopentadiene whose experimental data are available. Further, different DFT functionals were employed in place of the B3LYP functional to describe the higher-layer of the best ONIOM partition, and the results obtained were compared to experimental data. At this step, the ONIOM2(M06-2X/6-31 G(d): SVWN/STO-3G) model, where the higher layer encompasses the diene and pyracyclene portion of C60, was found to provide the best tradeoff between accuracy and cost, with respect to experimental data. This model showed errors lower than 2.6 and 2.0 kcal/mol for the estimation of the activation and reaction enthalpies respectively. We have also demonstrated, by comparing several ONIOM2(DFT/6-31G(d): SVWN/STO-3G) models, the importance of dispersion corrections in the accurate estimation of reaction and activation energies. Finally, we have considered a set of 21 dienes, including anthracene, 1,3-butadiene, 1,3-cyclopentadiene, furan, thiophene, selenothiophene, pyrrole and their mono-cyano and hydroxyl derivatives to get insight into the DA reaction of C60 using the best ONIOM2(M06-2X/6-31 G(d): SVWN/STO-3G) model. For a given diene and its derivatives, the analysis of frontier molecular orbitals provides a consistent explanation for the substituent effect on the activation barrier. It revealed that electron-donating (withdrawing) groups such as -OH (–CN) cut down on the activation barrier of the reaction by lowering (extending) of the HOMOdiene – LUMOC60 gap and consequently enhancing (weakening) the interaction between the two reactants. Further, the decomposition of the activation energy into the strain and interaction components suggested that, for a given diene, electron-donating groups (here –OH) diminish the height of the activation barrier not only by favoring the attractive interaction between the diene and C60, but also by reducing the strain energy of the system; the opposite effect is observed for electron-withdrawing groups (here –CN). In contrast with some previous findings on typical DA reactions, we could not infer any general rule applicable to the entire dataset for the prediction of activation energies because the latter does not correlate well with either of the TS polarity, electrophilicity of the diene, or the reaction energy. , Thesis (MSc) -- Faculty of Science, Chemistry, 2022
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  • Date Issued: 2022-04-06

Statistical and Mathematical Learning: an application to fraud detection and prevention

- Hamlomo, Sisipho

  • Authors: Hamlomo, Sisipho
  • Date: 2022-04-06
  • Subjects: Credit card fraud , Bootstrap (Statistics) , Support vector machines , Neural networks (Computer science) , Decision trees , Machine learning , Cross-validation‎ , Imbalanced data‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/233795 , vital:50128
  • Description: Credit card fraud is an ever-growing problem. There has been a rapid increase in the rate of fraudulent activities in recent years resulting in a considerable loss to several organizations, companies, and government agencies. Many researchers have focused on detecting fraudulent behaviours early using advanced machine learning techniques. However, credit card fraud detection is not a straightforward task since fraudulent behaviours usually differ for each attempt and the dataset is highly imbalanced, that is, the frequency of non-fraudulent cases outnumbers the frequency of fraudulent cases. In the case of the European credit card dataset, we have a ratio of approximately one fraudulent case to five hundred and seventy-eight non-fraudulent cases. Different methods were implemented to overcome this problem, namely random undersampling, one-sided sampling, SMOTE combined with Tomek links and parameter tuning. Predictive classifiers, namely logistic regression, decision trees, k-nearest neighbour, support vector machine and multilayer perceptrons, are applied to predict if a transaction is fraudulent or non-fraudulent. The model's performance is evaluated based on recall, precision, F1-score, the area under receiver operating characteristics curve, geometric mean and Matthew correlation coefficient. The results showed that the logistic regression classifier performed better than other classifiers except when the dataset was oversampled. , Thesis (MSc) -- Faculty of Science, Statistics, 2022
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  • Date Issued: 2022-04-06

The diversity and dry season habitat associations of fish communities in the Kabompo River Basin, Upper Zambezi, Zambia

- Rennie, Craig Lawrence

  • Authors: Rennie, Craig Lawrence
  • Date: 2022-04-06
  • Subjects: Biodiversity Zambia Kabompo District , Ecology Zambia Kabompo District , Fish communities Zambia Kabompo District , Fishes Ecology Zambia Kabompo District , Freshwater habitats Zambia Kabompo District , Fishes Effect of human beings on Zambia Kabompo District , Fishes Climatic factors Zambia Kabompo District , Mesohabitat‎
  • Language: English
  • Type: Master's thesis , text
  • Identifier: http://hdl.handle.net/10962/232261 , vital:49976
  • Description: The Zambezian headwaters contain diverse fish communities which support thriving fisheries. This region and its fishes are under pressure from multiple anthropogenic threats, including overexploitation and large-scale developments with potential knock-on effects for the riparian communities. Previous studies have focused on known fisheries areas and the mainstem Zambezi River, neglecting large tributaries such as the Kabompo River. Consequently, little literature is available on the diversity and ecology of the fishes that inhabit these large tributaries, hindering the effective management and protection of biodiversity. This study aimed to fill the current knowledge gaps in the diversity and habitat associations of fish communities in the Upper Zambezi, using the Kabompo River as a case study. The first objective was to provide an updated checklist of the fishes of the Kabompo River basin using a compilation of historical data and field surveys. This study detailed the occurrence and distribution of 83 fish species within the Kabompo River basin. All these species have been recorded in the Upper Zambezi, with some of their ranges extending into the Middle (29 species) and Lower Zambezi (23 species) while others have more restricted distributions. The most diverse families were the Cyprinidae (26 species) and the Cichlidae (15 species). A number of potential undescribed species, whose taxonomic distinctiveness need further investigation were also collected. Taxonomic conflicts are also highlighted for some of the taxa that were previously considered to have broad geographic ranges or disjunct distributions. Consistent with findings from other studies within the region, the current taxonomy underestimates the diversity of fishes in the Kabompo River and Upper Zambezi. The second objective was to assess the habitat use of small-bodied fish communities during the low-flow period in 2019. Reconnaissance trips identified dominant mesohabitats along the middle Kabompo River around Jivundu. A total of 139 mesohabitats were sampled across the five dominant mesohabitats identified; Phragmites mauritianus, wood, rock, Vallisneria aethiopica and bare substrate. Catch per unit effort, species richness, Shannon diversity and Pielou’s evenness differed significantly between these mesohabitats. Twenty-six species showed significant associations (p < 0.05) with a specific mesohabitat type or environmental variable (current velocity or depth). Eight species were associated with the woody habitat, with three of these, E. radiatus, E. unitaeniatus, and P. ngamensis being almost exclusively associated with this habitat. Enteromius kerstenii, E. lineomaculatus and S. depressirostris were almost exclusively associated with P. mauritianus and represent potential indicator species for this habitat. A number of species were also with both P. mauritianus and woody habitats. Nine species showed statistically significant associations with the rocky mesohabitat, with Amphilius uranoscopus and Petrocephalus longicapitis, being almost exclusive to rocky sections of the river. Therefore, species such as A. uranoscopus are potential indicators for monitoring the integrity of rocky habitats under threat from sedimentation. The strong associations indicate that this comprehensive baseline may be valuable indicators/ proxies for identifying anthropogenic induced change in the Kabompo basin. This would provide a basis to determine fish responses to regional environmental changes associated with human activities. , Thesis (MSc) -- Faculty of Science, Ichthyology & Fisheries Science, 2022
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  • Date Issued: 2022-04-06
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