An Investigation into Speaker and Headphone-Based Immersive Audio for VR and Digital Gaming Applications
- Authors: Marais, Kyle Donald
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365246 , vital:65720
- Description: Thesis embargoed. Possible release date set for early 2024. , Thesis (MSc) -- Faculty of Science, Computer Science, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Marais, Kyle Donald
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365246 , vital:65720
- Description: Thesis embargoed. Possible release date set for early 2024. , Thesis (MSc) -- Faculty of Science, Computer Science, 2022
- Full Text:
- Date Issued: 2022-10-14
An investigation into water and sanitation in the Eastern Cape Province and potential for implementation of biotechnology platforms
- Authors: Gumunyu, Wilbert
- Date: 2022-10-14
- Subjects: Sewage South Africa Eastern Cape , Sanitation South Africa Eastern Cape , Algae Biotechnology , Biotechnology , Sewage Purification Biological treatment , Algal biofuels
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362830 , vital:65366
- Description: In contemporary South Africa, a country in transition, destruction rather than reconstruction seems commonplace. Electricity supply is at an all-time low and ‘load shedding’ is an almost daily occurrence. Similarly, more fragility of water delivery and sanitation service is being reported with the likelihood of ‘water shedding’ a soon-to-be reality. In view of the ever-increasing reported mismanagement of South Africa’s water and sanitation infrastructure, which is likely nearing the point of collapse if not already collapsed, this thesis set out to interrogate at a provincial and municipal level the status of water and sanitation in Chris Hani District Municipality (CHDM), Eastern Cape Province. One major driver behind this study was to evaluate provincial and municipal water/wastewater infrastructure as a platform to support implementation of locally developed bioprocess technologies. First, publicly available historical data was used to derive a baseline or benchmark from which to determine gains/losses in compliance, water quality and efficiency. The period 2009-2013/4 during which Blue and Green Drop reporting was routine, was used as an appropriate start point. Data thus derived indicated that, at provincial and district municipality (DM) level, potable water supply was by bulk water schemes and, sanitation was typically by waste stabilization pond (WSP) treatment of municipal sewage. The derived benchmark for the period 2009-2013/14 indicated that most plants were not compliant (~75% of the Eastern Cape Province water treatment plants (WTP) operating between average performance to critical state), operated either at- or above design capacity (Eastern Cape Province, 16%; CHDM, 19%). A large number of plants for the province (62.4%) and district (81.25%) had hydraulic design capacity or average daily flows that were unknown (information not provided in available literature or plant reports) and final effluent did not always meet the general standard (70.3% of the CHDM wastewater treatment works (WWTW)). To determine the contemporary state (2020 - 2022) of water and sanitation within CHDM, a scoping exercise of WTP and WWTW in selected local municipalities was carried out. This was done along a west-east transect by appraising WTP and WWTW in the towns of Cradock, Tarkastad, Komani, Tsomo, Cacadu, and Ngcobo. Furthermore, targeted assessment of the Queenstown WTP and the Cradock WWTW was used to derive real-time data on the status of water and sanitation infrastructure. Results showed that water and sanitation services within CHDM had, in the years between 2009-2013/14 to date, deteriorated. Freshwater demand significantly exceeded capability of water supply schemes, where demand was as much as three times greater than reported available supply. For most WWTW, operation was in excess of capacity and between 1.52 and 12 times installed hydraulic loading. The targeted scoping exercise revealed that Queenstown WTP is a moderate risk plant (Cumulative risk rating, CRR = 11 and maximum risk rating, MRR = 47.8%), whereas Cradock WWTW was in working condition but with challenges and some infrastructural dysfunction. Assessment of water/effluent quality revealed that turbidity and TOC were above SANS 241 general limit. Non-compliance in terms of nitrate/nitrite-N, ammonium-N, phosphate-P, TSS, total coliforms, E. Coli, and free chlorine was evident at Cradock WWTW. Unstructured interviews with plant operators corroborated these findings. The overwhelming support for bulk schemes for potable water provision and WSP for sanitation indicated a partially water secure municipal district but derelict in terms of its sanitation services. The later, it was concluded, in particular provides an ideal opportunity for implementation of platform technologies to support bioprocesses for entrepreneurship, employment, economic benefit and to secure a closed circular economy for regional water and sanitation through valorisation of co-product streams. Among the co-product streams considered in this thesis are biomass, biogas, biofertilizers, biofuels and several high value chemical products. , Thesis (MSc) -- Faculty of Science, Institute for Environmental Biotechnology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Gumunyu, Wilbert
- Date: 2022-10-14
- Subjects: Sewage South Africa Eastern Cape , Sanitation South Africa Eastern Cape , Algae Biotechnology , Biotechnology , Sewage Purification Biological treatment , Algal biofuels
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362830 , vital:65366
- Description: In contemporary South Africa, a country in transition, destruction rather than reconstruction seems commonplace. Electricity supply is at an all-time low and ‘load shedding’ is an almost daily occurrence. Similarly, more fragility of water delivery and sanitation service is being reported with the likelihood of ‘water shedding’ a soon-to-be reality. In view of the ever-increasing reported mismanagement of South Africa’s water and sanitation infrastructure, which is likely nearing the point of collapse if not already collapsed, this thesis set out to interrogate at a provincial and municipal level the status of water and sanitation in Chris Hani District Municipality (CHDM), Eastern Cape Province. One major driver behind this study was to evaluate provincial and municipal water/wastewater infrastructure as a platform to support implementation of locally developed bioprocess technologies. First, publicly available historical data was used to derive a baseline or benchmark from which to determine gains/losses in compliance, water quality and efficiency. The period 2009-2013/4 during which Blue and Green Drop reporting was routine, was used as an appropriate start point. Data thus derived indicated that, at provincial and district municipality (DM) level, potable water supply was by bulk water schemes and, sanitation was typically by waste stabilization pond (WSP) treatment of municipal sewage. The derived benchmark for the period 2009-2013/14 indicated that most plants were not compliant (~75% of the Eastern Cape Province water treatment plants (WTP) operating between average performance to critical state), operated either at- or above design capacity (Eastern Cape Province, 16%; CHDM, 19%). A large number of plants for the province (62.4%) and district (81.25%) had hydraulic design capacity or average daily flows that were unknown (information not provided in available literature or plant reports) and final effluent did not always meet the general standard (70.3% of the CHDM wastewater treatment works (WWTW)). To determine the contemporary state (2020 - 2022) of water and sanitation within CHDM, a scoping exercise of WTP and WWTW in selected local municipalities was carried out. This was done along a west-east transect by appraising WTP and WWTW in the towns of Cradock, Tarkastad, Komani, Tsomo, Cacadu, and Ngcobo. Furthermore, targeted assessment of the Queenstown WTP and the Cradock WWTW was used to derive real-time data on the status of water and sanitation infrastructure. Results showed that water and sanitation services within CHDM had, in the years between 2009-2013/14 to date, deteriorated. Freshwater demand significantly exceeded capability of water supply schemes, where demand was as much as three times greater than reported available supply. For most WWTW, operation was in excess of capacity and between 1.52 and 12 times installed hydraulic loading. The targeted scoping exercise revealed that Queenstown WTP is a moderate risk plant (Cumulative risk rating, CRR = 11 and maximum risk rating, MRR = 47.8%), whereas Cradock WWTW was in working condition but with challenges and some infrastructural dysfunction. Assessment of water/effluent quality revealed that turbidity and TOC were above SANS 241 general limit. Non-compliance in terms of nitrate/nitrite-N, ammonium-N, phosphate-P, TSS, total coliforms, E. Coli, and free chlorine was evident at Cradock WWTW. Unstructured interviews with plant operators corroborated these findings. The overwhelming support for bulk schemes for potable water provision and WSP for sanitation indicated a partially water secure municipal district but derelict in terms of its sanitation services. The later, it was concluded, in particular provides an ideal opportunity for implementation of platform technologies to support bioprocesses for entrepreneurship, employment, economic benefit and to secure a closed circular economy for regional water and sanitation through valorisation of co-product streams. Among the co-product streams considered in this thesis are biomass, biogas, biofertilizers, biofuels and several high value chemical products. , Thesis (MSc) -- Faculty of Science, Institute for Environmental Biotechnology, 2022
- Full Text:
- Date Issued: 2022-10-14
An investigation of how newly appointed team leaders in an automotive manufacturing organisation experience the role transition from specialists to team leaders
- Authors: Mzelemu, Patrick Sbusiso
- Date: 2022-10-14
- Subjects: Leadership , Automobile industry executives , Role expectation , Identity (Psychology) , Personnel management , Organizational behavior
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/403036 , vital:69916
- Description: The purpose of this study is to investigate and understand how specialists who are newly appointed team leaders in an automotive manufacturing organisation experience the transition from specialists to team leaders. The role of leading others in an organisation is linked to human resource leadership. The human resource is highlighted as a valuable resource as it is the only thinking resource in an organisation. It also influences cost and quality and it is central to the organisation's competitive advantage. Consequently, any interruptions or lack of effective management of the human resource will result in a loss of value that the human resource brings into the organisation since they maximise the use of all other resources. The role transitioning process takes place in three phases. These are the separation, transitioning and incorporation phases. In the separation phase, the transitioning individuals have difficulty detaching from their previous role; the individuals still having the urge to do the work for their subordinates instead of delegating illustrate this. In the transition phase, the individuals in the study experienced the anxiety of wanting to make the new role a success whilst experiencing a sense of lack of belonging due to not being in the familiar old role and not entrenched in the new role. In the incorporation phase, the transitioning individuals experience a sense of stability where they are comfortable acting in the new role. Problem: This study aims to answer the question of how newly appointed team leaders in an automotive manufacturing organisation experience role transition from specialists to team leaders Method: The study will be employing the qualitative thematic deductive method. The target population consists of team leaders who have transitioned into the team leader position in the past two years in different departments. The data was collected by way of face-to-face semistructured interviews with a sample size of seven participants. Data analysis was conducted with a method that is consistent with thematic analysis. 3 Key Findings: Individuals transitioning have urgencies to perform their previous roles in the early phase; during the transition phase, they have anxiety because they are not yet successful in the new role, and in the final phase, they have become comfortable with their new roles and their new identities. Implications: The study's outcome is to identify insights and resultant recommendations for non-leading specialists transitioning into roles where they have to lead others. The study will add to the research in the field of leadership behaviour and organisational behaviour. , Thesis (MBA) -- Faculty of Commerce, Rhodes Business School, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Mzelemu, Patrick Sbusiso
- Date: 2022-10-14
- Subjects: Leadership , Automobile industry executives , Role expectation , Identity (Psychology) , Personnel management , Organizational behavior
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/403036 , vital:69916
- Description: The purpose of this study is to investigate and understand how specialists who are newly appointed team leaders in an automotive manufacturing organisation experience the transition from specialists to team leaders. The role of leading others in an organisation is linked to human resource leadership. The human resource is highlighted as a valuable resource as it is the only thinking resource in an organisation. It also influences cost and quality and it is central to the organisation's competitive advantage. Consequently, any interruptions or lack of effective management of the human resource will result in a loss of value that the human resource brings into the organisation since they maximise the use of all other resources. The role transitioning process takes place in three phases. These are the separation, transitioning and incorporation phases. In the separation phase, the transitioning individuals have difficulty detaching from their previous role; the individuals still having the urge to do the work for their subordinates instead of delegating illustrate this. In the transition phase, the individuals in the study experienced the anxiety of wanting to make the new role a success whilst experiencing a sense of lack of belonging due to not being in the familiar old role and not entrenched in the new role. In the incorporation phase, the transitioning individuals experience a sense of stability where they are comfortable acting in the new role. Problem: This study aims to answer the question of how newly appointed team leaders in an automotive manufacturing organisation experience role transition from specialists to team leaders Method: The study will be employing the qualitative thematic deductive method. The target population consists of team leaders who have transitioned into the team leader position in the past two years in different departments. The data was collected by way of face-to-face semistructured interviews with a sample size of seven participants. Data analysis was conducted with a method that is consistent with thematic analysis. 3 Key Findings: Individuals transitioning have urgencies to perform their previous roles in the early phase; during the transition phase, they have anxiety because they are not yet successful in the new role, and in the final phase, they have become comfortable with their new roles and their new identities. Implications: The study's outcome is to identify insights and resultant recommendations for non-leading specialists transitioning into roles where they have to lead others. The study will add to the research in the field of leadership behaviour and organisational behaviour. , Thesis (MBA) -- Faculty of Commerce, Rhodes Business School, 2022
- Full Text:
- Date Issued: 2022-10-14
An investigation of language choice on Twitter: the case of isiXhosa-speaking users and the o jewa ke eng? Trend
- Authors: Nkunzi, Zindzi
- Date: 2022-10-14
- Subjects: Twitter , Social media South Africa , Social media and society South Africa , Xhosa language Usage , Mass media and language South Africa , Language choice , Language shift , Language attitude
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406331 , vital:70259
- Description: The study critically examines and discusses language choice on twitter, a social media platform that has a vast number of people from different language groups. This diverse platform allows people to tweet, communicate, and share information online. There are tweets that trend and attract more engagement across different language groups. O jewa ke eng? which translates to ‘what’s bothering you?’ is one of those tweets, and it is communicated in Sesotho. (More discussion about the tweet in the introduction section that follows). According to Eisenstein, O’ Connor, Smith & Xing (2010) & Eisenstein (2016), “the popularity and ubiquity of social media allows access to a wide variety of spontaneous language enabling researchers to study language variation across space and time at large scale”, (Preotiuc-Pietro & Ungar, 2018: 1534). The introduction to the internet and socially mediated platforms such as Twitter and others has changed how information is produced and consumed. Social media allow people to communicate and engage in languages they are comfortable and familiar with. The study discusses language choice at three levels: language choice between isiXhosa verses English; isiXhosa verses other African languages and isiXhosa verses other varieties. The study is pursued with the overarching aim to investigate the possibility of African languages such as isiXhosa being used as dominant languages on social media. Thus, the study explores language use by isiXhosa speaking users on twitter that engaged with the tweet. Moreover, the study investigated why they choose to use one language over the other or multiple languages. To give a broader perspective on the study, language choice, language shift and language attitude are discussed and critically evaluated. Theoretically, the concept of code-switching and code-mixing is used when looking at bilingualism and multilingualism. It is imperative to look at multilingualism because the prevalent use of English is no longer a barrier to communication, social media platforms have created a space where African language users are able to engage in their native languages. Moreover, the study explores the use of standard and non-standard isiXhosa languages. There are varieties of languages such as tsotsitaal, slang and others, and these language varieties are not recognised as standard, used in educational settings and so on. In doing so, language attitude is used as the concept to investigate what propels isiXhosa users to or not to use these language varieties in the online communities. The study is explored with the aim to investigate whether social media either grows and preserves African languages online or these platforms are detrimental to these languages, as the language utilised on them is casual and vague, in terms of both spoken and written speech. , Olu phando luvavanya kwaye luxoxa nzulu ngokhetho lolwimi kuTwitter, ikhasi lonxibelelwano elinenani elikhulu labantu abavela kumaqela eelwimi ezahlukeneyo. Eli khasi labantu abohlukeneyo libavumela ukuba babhale, banxibelelane, kwaye babelane ngolwazi kwi-intanethi. Kukho ii-tweets (imibhalwana emifutshane) ezihamba phambili kwaye zitsala uthethathethwano phakathi kumaqela eelwimi ezahlukeneyo. O jewa ke eng? ethetha ukuthi, ‘ukhathazwa yintoni?’ yenye yezo tweets (yalo mibhalwana mifutshane), kwaye idluliselwe ngesiSuthu. (Ingxoxo engakumbi malunga ne-tweet (nombhalwana omfutshane) ifumaneka kwicandelo lentshayelelo elilandelayo). Ngokutsho kukaEisenstein, O’ Connor, Smith & Xing (2010) kunye noEisenstein (2016), “ukuduma kunye nobuninzi beendaba zoluntu kubangela ezo ndaba ukuba zinwenwele kwiindidi ezininzi zeelwimi nezivumela abaphandi ukuba bafunde ngokwahlukana kolwimi kwindawo kunye nexesha…”, (Preotiuc-Pietro & Ungar, 2008: 1534). Ulwaziso kwi-intanethi kunye namakhasi onxibelelwano oluntu afana ne-Twitter kunye namanye, luyitshintshile indlela ulwazi oluveliswa ngayo kunye nendlela olusetyenziswa ngayo. Amakhasi onxibelelwano oluntu avumela abantu ukuba banxibelelane kwaye bazibandakanye ngeelwimi abakhululekileyo ukuzisebenzisa nabaqhelene nazo Olu phando luxoxa ngokukhethwa kolwimi kumanqanaba amathathu: ukukhethwa kolwimi phakathi kwesiXhosa kunye nesiNgesi, isiXhosa kunye nezinye iilwimi ziseNtu, kwakunye nesiXhosa kunye nezinye iindidi zolwimi. Olu phando luqhutywa ngeyona njongo iphambili yokuphanda ukuba ngaba iilwimi zesiNtu ezifana nesiXhosa zingasetyenziswa njengeelwimi eziphambili kamakhasi onxibelelwano na. Kungoko, uphando luphonononga ukusetyenziswa kolwimi ngabo bantetho isisiXhosa kuTwitter abanxibelelana ne-tweet (nombhalo omfutshane). Olu phando, lukwaphanda ukuba kutheni bekhetha ukusebenzisa ulwimi oluthile kunolunye okanye iilwimi ezininzi. Ukunika umbono ngokuthe gabalala ngolu phando, ukukhethwa kolwimi, utshintsho lolwimi, kunye nesimo sengqondo solwimi ziyaxoxwa kwaye zihlolwa ngokunzulu. Ngokwethiyori, ingqikelelo yokutshintshatshintsha iilwimi kunye nokuxuba iilwimi (ukusebenzisa iilwimi ezahlukeneyo kumgca okanye umbhalo omnye) ziyasetyenziswa xa kujongwa ukusetyenziswa kweelwimi ezimbini kunye neelwimi ezininzi. Kunyanzelekile ukuba kujongwe ukusetyenziswa kweelwimi ezininzi kuba ukuxhaphaka kokusetyenziswa kwesiNgesi akusengomqobo kunxibelelwano, amakhasi onxibelelwano (amaqonga osasazo) oluntu avule indawo apho abasebenzisi beelwimi zesiNtu bakwaziyo ukuthetha ngeelwimi zabo zomthonyama. Ngaphezu koko, olu phando luphonononga ukusetyenziswa kweelwimi zesiXhosa ezisemgangathweni nezingekho mgangathweni. Kukho iintlobo ngeentlobo zeelwimi ezifana neTsotsitaal, ulwimi lwe-slang nezinye, kwaye ezi ntlobo zeelwimi aziqatshelwa njengeelwimi ezisemgangathweni, ezisetyenziswa kumajelo emfundo njalo njalo. Ngokwenza oko, isimo sengqondo solwimi sisetyenziswa njengengcamango yokuphanda ukuba yintoni eyenza abasebenzisi besiXhosa basebenzise okanye bangasebenzisi ezi ntlobo zeelwimi kwi-intanethi. Olu phononongo luphononongwa ngeenjongo zokuphanda apho amaqonga onxibelelwano akhula kwaye agcine khona iilwimi zesiNtu kwi-intanethi okanye lamaqonga onxibelelwano abubungozi kwezilwimi, njengoko ulwimi olusetyenziswa kula maqonga luqhelekile kwaye alucacanga, ngokwentetho ethethwayo nebhaliweyo. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Nkunzi, Zindzi
- Date: 2022-10-14
- Subjects: Twitter , Social media South Africa , Social media and society South Africa , Xhosa language Usage , Mass media and language South Africa , Language choice , Language shift , Language attitude
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406331 , vital:70259
- Description: The study critically examines and discusses language choice on twitter, a social media platform that has a vast number of people from different language groups. This diverse platform allows people to tweet, communicate, and share information online. There are tweets that trend and attract more engagement across different language groups. O jewa ke eng? which translates to ‘what’s bothering you?’ is one of those tweets, and it is communicated in Sesotho. (More discussion about the tweet in the introduction section that follows). According to Eisenstein, O’ Connor, Smith & Xing (2010) & Eisenstein (2016), “the popularity and ubiquity of social media allows access to a wide variety of spontaneous language enabling researchers to study language variation across space and time at large scale”, (Preotiuc-Pietro & Ungar, 2018: 1534). The introduction to the internet and socially mediated platforms such as Twitter and others has changed how information is produced and consumed. Social media allow people to communicate and engage in languages they are comfortable and familiar with. The study discusses language choice at three levels: language choice between isiXhosa verses English; isiXhosa verses other African languages and isiXhosa verses other varieties. The study is pursued with the overarching aim to investigate the possibility of African languages such as isiXhosa being used as dominant languages on social media. Thus, the study explores language use by isiXhosa speaking users on twitter that engaged with the tweet. Moreover, the study investigated why they choose to use one language over the other or multiple languages. To give a broader perspective on the study, language choice, language shift and language attitude are discussed and critically evaluated. Theoretically, the concept of code-switching and code-mixing is used when looking at bilingualism and multilingualism. It is imperative to look at multilingualism because the prevalent use of English is no longer a barrier to communication, social media platforms have created a space where African language users are able to engage in their native languages. Moreover, the study explores the use of standard and non-standard isiXhosa languages. There are varieties of languages such as tsotsitaal, slang and others, and these language varieties are not recognised as standard, used in educational settings and so on. In doing so, language attitude is used as the concept to investigate what propels isiXhosa users to or not to use these language varieties in the online communities. The study is explored with the aim to investigate whether social media either grows and preserves African languages online or these platforms are detrimental to these languages, as the language utilised on them is casual and vague, in terms of both spoken and written speech. , Olu phando luvavanya kwaye luxoxa nzulu ngokhetho lolwimi kuTwitter, ikhasi lonxibelelwano elinenani elikhulu labantu abavela kumaqela eelwimi ezahlukeneyo. Eli khasi labantu abohlukeneyo libavumela ukuba babhale, banxibelelane, kwaye babelane ngolwazi kwi-intanethi. Kukho ii-tweets (imibhalwana emifutshane) ezihamba phambili kwaye zitsala uthethathethwano phakathi kumaqela eelwimi ezahlukeneyo. O jewa ke eng? ethetha ukuthi, ‘ukhathazwa yintoni?’ yenye yezo tweets (yalo mibhalwana mifutshane), kwaye idluliselwe ngesiSuthu. (Ingxoxo engakumbi malunga ne-tweet (nombhalwana omfutshane) ifumaneka kwicandelo lentshayelelo elilandelayo). Ngokutsho kukaEisenstein, O’ Connor, Smith & Xing (2010) kunye noEisenstein (2016), “ukuduma kunye nobuninzi beendaba zoluntu kubangela ezo ndaba ukuba zinwenwele kwiindidi ezininzi zeelwimi nezivumela abaphandi ukuba bafunde ngokwahlukana kolwimi kwindawo kunye nexesha…”, (Preotiuc-Pietro & Ungar, 2008: 1534). Ulwaziso kwi-intanethi kunye namakhasi onxibelelwano oluntu afana ne-Twitter kunye namanye, luyitshintshile indlela ulwazi oluveliswa ngayo kunye nendlela olusetyenziswa ngayo. Amakhasi onxibelelwano oluntu avumela abantu ukuba banxibelelane kwaye bazibandakanye ngeelwimi abakhululekileyo ukuzisebenzisa nabaqhelene nazo Olu phando luxoxa ngokukhethwa kolwimi kumanqanaba amathathu: ukukhethwa kolwimi phakathi kwesiXhosa kunye nesiNgesi, isiXhosa kunye nezinye iilwimi ziseNtu, kwakunye nesiXhosa kunye nezinye iindidi zolwimi. Olu phando luqhutywa ngeyona njongo iphambili yokuphanda ukuba ngaba iilwimi zesiNtu ezifana nesiXhosa zingasetyenziswa njengeelwimi eziphambili kamakhasi onxibelelwano na. Kungoko, uphando luphonononga ukusetyenziswa kolwimi ngabo bantetho isisiXhosa kuTwitter abanxibelelana ne-tweet (nombhalo omfutshane). Olu phando, lukwaphanda ukuba kutheni bekhetha ukusebenzisa ulwimi oluthile kunolunye okanye iilwimi ezininzi. Ukunika umbono ngokuthe gabalala ngolu phando, ukukhethwa kolwimi, utshintsho lolwimi, kunye nesimo sengqondo solwimi ziyaxoxwa kwaye zihlolwa ngokunzulu. Ngokwethiyori, ingqikelelo yokutshintshatshintsha iilwimi kunye nokuxuba iilwimi (ukusebenzisa iilwimi ezahlukeneyo kumgca okanye umbhalo omnye) ziyasetyenziswa xa kujongwa ukusetyenziswa kweelwimi ezimbini kunye neelwimi ezininzi. Kunyanzelekile ukuba kujongwe ukusetyenziswa kweelwimi ezininzi kuba ukuxhaphaka kokusetyenziswa kwesiNgesi akusengomqobo kunxibelelwano, amakhasi onxibelelwano (amaqonga osasazo) oluntu avule indawo apho abasebenzisi beelwimi zesiNtu bakwaziyo ukuthetha ngeelwimi zabo zomthonyama. Ngaphezu koko, olu phando luphonononga ukusetyenziswa kweelwimi zesiXhosa ezisemgangathweni nezingekho mgangathweni. Kukho iintlobo ngeentlobo zeelwimi ezifana neTsotsitaal, ulwimi lwe-slang nezinye, kwaye ezi ntlobo zeelwimi aziqatshelwa njengeelwimi ezisemgangathweni, ezisetyenziswa kumajelo emfundo njalo njalo. Ngokwenza oko, isimo sengqondo solwimi sisetyenziswa njengengcamango yokuphanda ukuba yintoni eyenza abasebenzisi besiXhosa basebenzise okanye bangasebenzisi ezi ntlobo zeelwimi kwi-intanethi. Olu phononongo luphononongwa ngeenjongo zokuphanda apho amaqonga onxibelelwano akhula kwaye agcine khona iilwimi zesiNtu kwi-intanethi okanye lamaqonga onxibelelwano abubungozi kwezilwimi, njengoko ulwimi olusetyenziswa kula maqonga luqhelekile kwaye alucacanga, ngokwentetho ethethwayo nebhaliweyo. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
An investigation of the English language demands of mathematical texts on data handling used in intermediate phase mathematics
- Authors: Jones, Angela Peta
- Date: 2022-10-14
- Subjects: Mathematics Study and teaching (Elementary) South Africa , Middle school education South Africa , Information storage and retrieval systems Mathematics , Language complexity , Textbooks Readability , Language arts Correlation with content subjects South Africa , Content area reading South Africa
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405259 , vital:70155
- Description: In the Intermediate Phase the majority of South African learners are transitioning from learning in their mother tongue to learning in English as well as from learning to read to reading to learn, and this is a major challenge. Textbooks are a key mediating artefact in the learning of mathematics and they present a challenge to the learner in terms of the language comprehension demands The data handling sections of mathematics textbooks are particularly dense in text. This is an important part of the mathematics curriculum as it is the beginning of statistical literacy learning. We need to be able to question, evaluate claims based on data, create arguments we can defend and use data meaningfully, it is thus crucial that learners acquire statistical literacy. This research sets out to examine the text in the data handling sections of four Intermediate Phase Mathematics book series in order to answer the following research question: What are the language comprehension demands of English mathematical texts on data handling that are used in South African Intermediate Phase Mathematics? The theories framing the study are Vygotsky’s sociocultural theory and Cummins’ second language acquisition theory. It is an interpretivist mixed method case study that takes the form of a document analysis.. The findings indicate that many units in the books analysed have a higher readability level than the grade level and will thus present a challenge to learners in terms of their ability to access the mathematical content. An analysis of the linguistic complexity revealed that the features contributing most to the complexity of the texts included words with seven or more letters, prepositional phrases, infinitives, complex verbs and complex/compound sentences. An examination of the non-textual elements revealed that most of them are accurate, connected, concise, contextual and these add to the comprehensibility although there were a few which could be possibly be distractors. It is hoped that the empirical findings of this study, will sensitise educators and publishers involved with the design of textbooks and workbooks to the type of language currently found and that they might give attention to the needs of English language learners when developing these texts. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Jones, Angela Peta
- Date: 2022-10-14
- Subjects: Mathematics Study and teaching (Elementary) South Africa , Middle school education South Africa , Information storage and retrieval systems Mathematics , Language complexity , Textbooks Readability , Language arts Correlation with content subjects South Africa , Content area reading South Africa
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405259 , vital:70155
- Description: In the Intermediate Phase the majority of South African learners are transitioning from learning in their mother tongue to learning in English as well as from learning to read to reading to learn, and this is a major challenge. Textbooks are a key mediating artefact in the learning of mathematics and they present a challenge to the learner in terms of the language comprehension demands The data handling sections of mathematics textbooks are particularly dense in text. This is an important part of the mathematics curriculum as it is the beginning of statistical literacy learning. We need to be able to question, evaluate claims based on data, create arguments we can defend and use data meaningfully, it is thus crucial that learners acquire statistical literacy. This research sets out to examine the text in the data handling sections of four Intermediate Phase Mathematics book series in order to answer the following research question: What are the language comprehension demands of English mathematical texts on data handling that are used in South African Intermediate Phase Mathematics? The theories framing the study are Vygotsky’s sociocultural theory and Cummins’ second language acquisition theory. It is an interpretivist mixed method case study that takes the form of a document analysis.. The findings indicate that many units in the books analysed have a higher readability level than the grade level and will thus present a challenge to learners in terms of their ability to access the mathematical content. An analysis of the linguistic complexity revealed that the features contributing most to the complexity of the texts included words with seven or more letters, prepositional phrases, infinitives, complex verbs and complex/compound sentences. An examination of the non-textual elements revealed that most of them are accurate, connected, concise, contextual and these add to the comprehensibility although there were a few which could be possibly be distractors. It is hoped that the empirical findings of this study, will sensitise educators and publishers involved with the design of textbooks and workbooks to the type of language currently found and that they might give attention to the needs of English language learners when developing these texts. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
Application of systems theory for analysing the sustainability foci and practices of the Faculty of Economics and Information Technology Systems: (A Case Study of Walter Sisulu University: Komani campus)
- Authors: Klishi, Konwaba Bomikazi
- Date: 2022-10-14
- Subjects: Sustainable development Study and teaching (Higher) South Africa Mthatha , System theory , Curriculum evaluation South Africa Mthatha , Community engagement , Walter Sisulu University for Technology and Science
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405281 , vital:70157
- Description: Sustainable development is a global concern that intertwines several factors, including poverty, biodiversity, inequality, water, and energy. This interconnection does not only affect the current generation but may have long term implications for future generations as we see the rapid spread of environmental risk in our local communities. In this study, systems theory was adapted for analysing the sustainability focus of the Faculty of Economics and Information Technology Systems (FEITS) at Walter Sisulu University. A qualitative research method was used during this research, and data collected from a purposive sample of staff, activities and documentation. In this study, Von Bertalanffy’s systems theory is applied to analyse the sustainability foci and practices of the FEITS. The study describes sustainability practices and concerns that emerge from research activities, community engagement activities and work-integrated learning. The theory is also used to analyse the connection between various subsystems of the faculty when addressing emerging local sustainability concerns. Education for sustainable development is an important aspect of this study as it considers the sustainability concerns in the curriculum from the perspective of current and future alternatives for the economy and socio-ecological aspects of communities. The following findings have emerged from the study: Contextual realities related to inequality were foci of discussion and concern in various qualifications. Socioecological issues and risks were found to be related to water and sanitation, food security and climate change. Sustainability discourse is related to health and wellbeing, peace, and security. There is an alignment of green skills to the curriculum of the faculty and pedagogical practices which relate to sustainability. The faculty participates in stakeholder platforms to respond local sustainability challenges and is developing courses in response to local development needs. This study has implications for the faculty’s curriculum in terms of the content of various qualifications, future research, and community engagement activities of the university. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Klishi, Konwaba Bomikazi
- Date: 2022-10-14
- Subjects: Sustainable development Study and teaching (Higher) South Africa Mthatha , System theory , Curriculum evaluation South Africa Mthatha , Community engagement , Walter Sisulu University for Technology and Science
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405281 , vital:70157
- Description: Sustainable development is a global concern that intertwines several factors, including poverty, biodiversity, inequality, water, and energy. This interconnection does not only affect the current generation but may have long term implications for future generations as we see the rapid spread of environmental risk in our local communities. In this study, systems theory was adapted for analysing the sustainability focus of the Faculty of Economics and Information Technology Systems (FEITS) at Walter Sisulu University. A qualitative research method was used during this research, and data collected from a purposive sample of staff, activities and documentation. In this study, Von Bertalanffy’s systems theory is applied to analyse the sustainability foci and practices of the FEITS. The study describes sustainability practices and concerns that emerge from research activities, community engagement activities and work-integrated learning. The theory is also used to analyse the connection between various subsystems of the faculty when addressing emerging local sustainability concerns. Education for sustainable development is an important aspect of this study as it considers the sustainability concerns in the curriculum from the perspective of current and future alternatives for the economy and socio-ecological aspects of communities. The following findings have emerged from the study: Contextual realities related to inequality were foci of discussion and concern in various qualifications. Socioecological issues and risks were found to be related to water and sanitation, food security and climate change. Sustainability discourse is related to health and wellbeing, peace, and security. There is an alignment of green skills to the curriculum of the faculty and pedagogical practices which relate to sustainability. The faculty participates in stakeholder platforms to respond local sustainability challenges and is developing courses in response to local development needs. This study has implications for the faculty’s curriculum in terms of the content of various qualifications, future research, and community engagement activities of the university. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
Assessment of cytotoxic artemisinin and its derivatives as DNA damaging inducing agents in triple-negative breast cancer cells
- Authors: Mkhwanazi, Ntando
- Date: 2022-10-14
- Subjects: Breast Cancer , Artemisinin , DNA damage , Antineoplastic agents , Breast Cancer Treatment
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362960 , vital:65378
- Description: In developing countries, including South Africa, breast cancer is the primary cause of cancer-related deaths among women. TNBC (triple-negative breast cancer) is an aggressive breast cancer subtype that is more prevalent in women of African descent. This subtype lacks the key receptors, namely the estrogen receptor (ER-), progesterone receptor (PR-), and human epidermal growth factor receptor 2 (HER2-) that are the basis of successful targeted therapies for other subtypes of the disease. To date, there are no effective, standardized targeted therapies for TNBC. Artemisinin is an anti-malarial drug and numerous derivatives of the compound have been developed to improve the potency and solubility of the parent compound. Artemisinin and its derivatives have gained attention as potential anti-cancer agents; however, such studies have not yet progressed to clinical trials and the precise mechanism of action of these compounds is yet to be fully explained. In this study, artemisinin, and its known derivative artesunate, as well as a novel derivative, WHN11, were investigated as DNA damage-inducing agents in TNBC. WHN11 was found to be the most potent of the three compounds, displaying an IC50 of 3.20 μM against HCC70 cells, artemisinin displayed an IC50 of 214.70 μM and artesunate displayed an IC50 of 25.48 μM. The compounds were less toxic to the MCF12A non-cancerous cells, with IC50 values 298.30, 87.53, and 8.35 μM for artemisinin, artesunate, and WHN11, respectively, and displayed selectivity indices of 1.39, 3.44 and 2.61 μM for artemisinin, artesunate, and WHN11, respectively. In silico and in vitro studies revealed that the artemisinin compounds bind to DNA through the minor groove. While all three compounds were able to bind to DNA, a comet assay revealed that only artemisinin and artesunate, and not WHN11, were able to cause DNA damage compared to the vehicle control, DMSO. Finally, a topoisomerase I (TOPO I) enzyme assay demonstrated that while the compounds appeared to display a degree of inhibition of TOPO I, as evidenced by a downward shift in the plasmid band on the agarose gel, they were not able to fully inhibit the enzyme to return the plasmid to the supercoiled conformation. In addition, combination studies revealed that artemisinin, artesunate, and WHN11 acted synergistically in combination with camptothecin, but displayed either an additive (artemisinin) or antagonistic (artesunate and WHN11) relationship when used in combination with etoposide. In conclusion, artemisinin, its known derivative artesunate, and novel and highly toxic derivative WHN11, all bind to DNA via the minor groove, however only artemisinin and artesunate, and not WHN11, cause DNA damage, indicating a potentially different mechanism of action of the three artemisinins. All three compounds act synergistically with camptothecin, which suggests interference with topoisomerase activity, partially supported by slight inhibition of TOPO I activity, and could indicate either direct inhibition of the enzyme or interference with enzyme function by competitive binding to the DNA. Further studies could help explore alternate DNA damage assays, to validate these findings, and the effect of the compounds on TOPO II activity could also be assessed. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Mkhwanazi, Ntando
- Date: 2022-10-14
- Subjects: Breast Cancer , Artemisinin , DNA damage , Antineoplastic agents , Breast Cancer Treatment
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362960 , vital:65378
- Description: In developing countries, including South Africa, breast cancer is the primary cause of cancer-related deaths among women. TNBC (triple-negative breast cancer) is an aggressive breast cancer subtype that is more prevalent in women of African descent. This subtype lacks the key receptors, namely the estrogen receptor (ER-), progesterone receptor (PR-), and human epidermal growth factor receptor 2 (HER2-) that are the basis of successful targeted therapies for other subtypes of the disease. To date, there are no effective, standardized targeted therapies for TNBC. Artemisinin is an anti-malarial drug and numerous derivatives of the compound have been developed to improve the potency and solubility of the parent compound. Artemisinin and its derivatives have gained attention as potential anti-cancer agents; however, such studies have not yet progressed to clinical trials and the precise mechanism of action of these compounds is yet to be fully explained. In this study, artemisinin, and its known derivative artesunate, as well as a novel derivative, WHN11, were investigated as DNA damage-inducing agents in TNBC. WHN11 was found to be the most potent of the three compounds, displaying an IC50 of 3.20 μM against HCC70 cells, artemisinin displayed an IC50 of 214.70 μM and artesunate displayed an IC50 of 25.48 μM. The compounds were less toxic to the MCF12A non-cancerous cells, with IC50 values 298.30, 87.53, and 8.35 μM for artemisinin, artesunate, and WHN11, respectively, and displayed selectivity indices of 1.39, 3.44 and 2.61 μM for artemisinin, artesunate, and WHN11, respectively. In silico and in vitro studies revealed that the artemisinin compounds bind to DNA through the minor groove. While all three compounds were able to bind to DNA, a comet assay revealed that only artemisinin and artesunate, and not WHN11, were able to cause DNA damage compared to the vehicle control, DMSO. Finally, a topoisomerase I (TOPO I) enzyme assay demonstrated that while the compounds appeared to display a degree of inhibition of TOPO I, as evidenced by a downward shift in the plasmid band on the agarose gel, they were not able to fully inhibit the enzyme to return the plasmid to the supercoiled conformation. In addition, combination studies revealed that artemisinin, artesunate, and WHN11 acted synergistically in combination with camptothecin, but displayed either an additive (artemisinin) or antagonistic (artesunate and WHN11) relationship when used in combination with etoposide. In conclusion, artemisinin, its known derivative artesunate, and novel and highly toxic derivative WHN11, all bind to DNA via the minor groove, however only artemisinin and artesunate, and not WHN11, cause DNA damage, indicating a potentially different mechanism of action of the three artemisinins. All three compounds act synergistically with camptothecin, which suggests interference with topoisomerase activity, partially supported by slight inhibition of TOPO I activity, and could indicate either direct inhibition of the enzyme or interference with enzyme function by competitive binding to the DNA. Further studies could help explore alternate DNA damage assays, to validate these findings, and the effect of the compounds on TOPO II activity could also be assessed. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
Baseline assessments for foundation phase reading in isiXhosa: a case study
- Authors: Nesi, Nolubabalo Amanda
- Date: 2022-10-14
- Subjects: Test of Early Reading Ability , Xhosa language , Reading (Elementary) Ability testing , Reading (Elementary) Social aspects South Africa Makhanda , Dynamic assessment (Education)
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406320 , vital:70258
- Description: The main objective of this study was to investigate the use of baseline assessments for reading in isiXhosa in Foundation Phase. It focused on how teachers conduct baseline assessments, the assessment tools they use, and their responsiveness to baseline assessments data in terms of curriculum planning and practice, given the lack of explicit guidelines and tools specifically developed for African languages. The lack of clarity may lead teachers to assume that the same assessment approaches and practices apply across all official languages despite their linguistic and sociolinguistic differences. Vygotsky’s socio-cultural theory of learning and Biggs’ concept on constructive alignment are used as the theoretical and conceptual framework for this study. The premise for this study was that it would be problematic to apply similar assessment approaches and use the same tools for all official South African languages. The socio-cultural approach emphasises the importance of language learning and learning generally according to the context within which language occurs. The main research sites are two Quintile 1 schools in a township in Makhanda District. These schools have been receiving external intervention which includes a baseline assessment for isiXhosa reading from Non-Governmental Organisations (NGOs). This study sought to provide some insights on whether previous assessments have informed subsequent teaching practices. The findings of the study revealed that the most prominent tool for assessing reading in isiXhosa is Early Grade Reading Assessment (EGRA) and the tools used by external literacy interventions in the two schools were adapted versions of EGRA. Additionally, the subtasks in the baseline assessment tools used were aligned to the linguistic features of isiXhosa besides the nonsense word component. Furthermore, teachers were assessing and teaching reading at lower levels than expected in the grades 2 and 3 in this study. This study recommends that teachers respond to the baseline assessment data appropriately to develop reading competencies. In addition, there is need for an alignment between the linguistic features, the curriculum and strategies of teaching reading. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Nesi, Nolubabalo Amanda
- Date: 2022-10-14
- Subjects: Test of Early Reading Ability , Xhosa language , Reading (Elementary) Ability testing , Reading (Elementary) Social aspects South Africa Makhanda , Dynamic assessment (Education)
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406320 , vital:70258
- Description: The main objective of this study was to investigate the use of baseline assessments for reading in isiXhosa in Foundation Phase. It focused on how teachers conduct baseline assessments, the assessment tools they use, and their responsiveness to baseline assessments data in terms of curriculum planning and practice, given the lack of explicit guidelines and tools specifically developed for African languages. The lack of clarity may lead teachers to assume that the same assessment approaches and practices apply across all official languages despite their linguistic and sociolinguistic differences. Vygotsky’s socio-cultural theory of learning and Biggs’ concept on constructive alignment are used as the theoretical and conceptual framework for this study. The premise for this study was that it would be problematic to apply similar assessment approaches and use the same tools for all official South African languages. The socio-cultural approach emphasises the importance of language learning and learning generally according to the context within which language occurs. The main research sites are two Quintile 1 schools in a township in Makhanda District. These schools have been receiving external intervention which includes a baseline assessment for isiXhosa reading from Non-Governmental Organisations (NGOs). This study sought to provide some insights on whether previous assessments have informed subsequent teaching practices. The findings of the study revealed that the most prominent tool for assessing reading in isiXhosa is Early Grade Reading Assessment (EGRA) and the tools used by external literacy interventions in the two schools were adapted versions of EGRA. Additionally, the subtasks in the baseline assessment tools used were aligned to the linguistic features of isiXhosa besides the nonsense word component. Furthermore, teachers were assessing and teaching reading at lower levels than expected in the grades 2 and 3 in this study. This study recommends that teachers respond to the baseline assessment data appropriately to develop reading competencies. In addition, there is need for an alignment between the linguistic features, the curriculum and strategies of teaching reading. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
Big T’s and small T’s: an explorative study on trauma narratives in South Africa
- Authors: Naidoo, Rinisa
- Date: 2022-10-14
- Subjects: Psychic trauma , Anthropology , Mental health South Africa , Apartheid South Africa Personal narratives , Culture Psychological aspects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/408641 , vital:70512
- Description: The 21st century has seen a dramatic increase in chronic non-infectious diseases, especially in the area of mental health. Medical anthropologists have seen a rise in the development of mental illnesses in both developed and developing nations. There is, however, little research conducted on trauma narratives that do not stem from political violence from an anthropological lens. South Africa has various understandings of trauma depending on the cultural context and it is crucial to examine these narratives as this provides vital information of the daily lived experiences of trauma survivors. Key themes draw on issues of trauma denialism, communicating distress, traumatic symptoms and the development of mental illnesses as a result of traumatic exposure. The data was analysed through Goffman’s (1959) Presentation of Self in Everyday Life illustrating various ways how survivors present themselves depending on the particular audience. This research employed both qualitative and quantitative research methods to gather a holistic understanding of trauma survivors. With the use of semi-structured interviews of Stressful Life Events Questionnaire coupled with observations of online support groups for trauma survivors, this research has provided rich ethnographic evidence of the impact that culture has on trauma narratives illustrating a clear normalcy of trauma present in South Africa. , Thesis (MSocSci) -- Faculty of Humanities, Anthropology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Naidoo, Rinisa
- Date: 2022-10-14
- Subjects: Psychic trauma , Anthropology , Mental health South Africa , Apartheid South Africa Personal narratives , Culture Psychological aspects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/408641 , vital:70512
- Description: The 21st century has seen a dramatic increase in chronic non-infectious diseases, especially in the area of mental health. Medical anthropologists have seen a rise in the development of mental illnesses in both developed and developing nations. There is, however, little research conducted on trauma narratives that do not stem from political violence from an anthropological lens. South Africa has various understandings of trauma depending on the cultural context and it is crucial to examine these narratives as this provides vital information of the daily lived experiences of trauma survivors. Key themes draw on issues of trauma denialism, communicating distress, traumatic symptoms and the development of mental illnesses as a result of traumatic exposure. The data was analysed through Goffman’s (1959) Presentation of Self in Everyday Life illustrating various ways how survivors present themselves depending on the particular audience. This research employed both qualitative and quantitative research methods to gather a holistic understanding of trauma survivors. With the use of semi-structured interviews of Stressful Life Events Questionnaire coupled with observations of online support groups for trauma survivors, this research has provided rich ethnographic evidence of the impact that culture has on trauma narratives illustrating a clear normalcy of trauma present in South Africa. , Thesis (MSocSci) -- Faculty of Humanities, Anthropology, 2022
- Full Text:
- Date Issued: 2022-10-14
Bioactivity evaluation of manno-oligosaccharides produced from spent coffee grounds using a Bacillus sp. derived endo-1,4-β-mannanase
- Authors: Magengelele, Mihle
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365233 , vital:65719
- Description: Thesis embargoed. Possible release date set for early 2024. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Magengelele, Mihle
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365233 , vital:65719
- Description: Thesis embargoed. Possible release date set for early 2024. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
Bioinformatics tool and web server development focusing on structural bioinformatics applications
- Authors: Nabatanzi, Margaret
- Date: 2022-10-14
- Subjects: Structural bioinformatics , Proteins Structure , Protein structure prediction , Proteins Conformation , Protein complex
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/365700 , vital:65777 , DOI https://doi.org/10.21504/10962/365700
- Description: This thesis is divided into two main sections: Part 1 describes the design, and evaluation of the accuracy of a new web server – PRotein Interactive MOdeling (PRIMO-Complexes) for modeling protein complexes and biological assemblies. The second part describes the development of bioinformatics tools to predict HIV-1 drug resistance and support bioinformatics research and education. Recent technological advances have resulted in a tremendous increase in the number of sequences and protein structures deposited in the Universal Protein Resource Knowledgebase (UniProtKB) and the Protein Data Bank (PDB). However, the number of sequences has increased at a higher rate compared with the experimentally solved multimeric protein structures. This is partly due to advances in high-throughput sequencing technology. To fill this protein sequence-structure gap, computational approaches have been developed to predict protein structures from available sequences. Computational approaches include template-based and ab initio modeling with the former being the most reliable. Template-based modeling process can be achieved using either standalone software or automated modeling web servers. However, using standalone software requires familiarity with command-line interfaces as well as utilising other intermediate programs which could be daunting to novice users. To alleviate some of these problems, the modeling process has been automated, however, it still has numerous challenges. To date, only a few web servers that support multimeric protein modeling have been developed and even these provide little, if any user involvement in the process. To address some of these issues, a new web server – PRIMO-Complexes – was developed to model protein complexes and biological assemblies. The existing PRIMO web server could only model monomeric proteins. Part 1 of this thesis provides a detailed account of the development and evaluation of PRIMO-Complexes. The rationale for developing this new web server was based on the understanding that most proteins function as protein multimers and often the ligand-binding sites, and enzyme active sites are located at the protein-protein interfaces. It, therefore, necessitated developing capabilities for modeling multimeric proteins. PRIMO-Complexes web server was developed using the Waterfall system development life cycle model, is based on the Django web framework and makes use of high-performance computing resources to execute jobs. The accuracy of the algorithms embedded in PRIMO- Complexes was evaluated and the results were promising. Additionally, PRIMO-Complexes performs comparatively well in relation to other web servers that offer multimeric protein modeling. Another unique feature of PRIMO-Complexes is its interactivity. The webserver was developed with capabilities for allowing users to model multimeric proteins with an appreciable degree of control over the process. In the second part of the thesis several other bioinformatics tools are described, for example, a webserver for predicting HIV-1 drug resistance, the RUBi protein model repository, and a bioinformatics web portal for education and research resources. RUBi protein model repository stores verified theoretical models built using various modeling approaches. This enables users to easily access models to reproduce and/or further the research. This is described in chapter 5. Chapter 6 describes the design and development of the Human Immunodeficiency type 1 Resistance Predictor (HIV-1 ResPredictor), a web application that employs artificial neural networks (ANN) to predict drug resistance in patients infected with HIV-1 subtype B. The ANNs and subtype classifiers performed well making this web application potentially useful to both clinicians and researchers in this era of personalised medicine. Finally, chapter 7 describes a bioinformatics education web portal that equips students with information on how to use bioinformatics online resources. Being aware of these resources is not enough without a deeper understanding and guidance on how to apply bioinformatics methods to solve practical problems. This web portal was aimed at familiarising students with the basic terminology and approaches in structural bioinformatics. Students will potentially gain skills to conduct real-life bioinformatics research to obtain biological insights. , Thesis (PhD) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Nabatanzi, Margaret
- Date: 2022-10-14
- Subjects: Structural bioinformatics , Proteins Structure , Protein structure prediction , Proteins Conformation , Protein complex
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/365700 , vital:65777 , DOI https://doi.org/10.21504/10962/365700
- Description: This thesis is divided into two main sections: Part 1 describes the design, and evaluation of the accuracy of a new web server – PRotein Interactive MOdeling (PRIMO-Complexes) for modeling protein complexes and biological assemblies. The second part describes the development of bioinformatics tools to predict HIV-1 drug resistance and support bioinformatics research and education. Recent technological advances have resulted in a tremendous increase in the number of sequences and protein structures deposited in the Universal Protein Resource Knowledgebase (UniProtKB) and the Protein Data Bank (PDB). However, the number of sequences has increased at a higher rate compared with the experimentally solved multimeric protein structures. This is partly due to advances in high-throughput sequencing technology. To fill this protein sequence-structure gap, computational approaches have been developed to predict protein structures from available sequences. Computational approaches include template-based and ab initio modeling with the former being the most reliable. Template-based modeling process can be achieved using either standalone software or automated modeling web servers. However, using standalone software requires familiarity with command-line interfaces as well as utilising other intermediate programs which could be daunting to novice users. To alleviate some of these problems, the modeling process has been automated, however, it still has numerous challenges. To date, only a few web servers that support multimeric protein modeling have been developed and even these provide little, if any user involvement in the process. To address some of these issues, a new web server – PRIMO-Complexes – was developed to model protein complexes and biological assemblies. The existing PRIMO web server could only model monomeric proteins. Part 1 of this thesis provides a detailed account of the development and evaluation of PRIMO-Complexes. The rationale for developing this new web server was based on the understanding that most proteins function as protein multimers and often the ligand-binding sites, and enzyme active sites are located at the protein-protein interfaces. It, therefore, necessitated developing capabilities for modeling multimeric proteins. PRIMO-Complexes web server was developed using the Waterfall system development life cycle model, is based on the Django web framework and makes use of high-performance computing resources to execute jobs. The accuracy of the algorithms embedded in PRIMO- Complexes was evaluated and the results were promising. Additionally, PRIMO-Complexes performs comparatively well in relation to other web servers that offer multimeric protein modeling. Another unique feature of PRIMO-Complexes is its interactivity. The webserver was developed with capabilities for allowing users to model multimeric proteins with an appreciable degree of control over the process. In the second part of the thesis several other bioinformatics tools are described, for example, a webserver for predicting HIV-1 drug resistance, the RUBi protein model repository, and a bioinformatics web portal for education and research resources. RUBi protein model repository stores verified theoretical models built using various modeling approaches. This enables users to easily access models to reproduce and/or further the research. This is described in chapter 5. Chapter 6 describes the design and development of the Human Immunodeficiency type 1 Resistance Predictor (HIV-1 ResPredictor), a web application that employs artificial neural networks (ANN) to predict drug resistance in patients infected with HIV-1 subtype B. The ANNs and subtype classifiers performed well making this web application potentially useful to both clinicians and researchers in this era of personalised medicine. Finally, chapter 7 describes a bioinformatics education web portal that equips students with information on how to use bioinformatics online resources. Being aware of these resources is not enough without a deeper understanding and guidance on how to apply bioinformatics methods to solve practical problems. This web portal was aimed at familiarising students with the basic terminology and approaches in structural bioinformatics. Students will potentially gain skills to conduct real-life bioinformatics research to obtain biological insights. , Thesis (PhD) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
Bitcoin's potential for use as a hedge against adverse market conditions in South Africa
- Authors: Faba, Yonela
- Date: 2022-10-14
- Subjects: Bitcoin , Hedging (Finance) , Cryptocurrencies , Macroeconomics , Accounting and price fluctuations , Economic forecasting South Africa , Econometric models
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/357526 , vital:64751
- Description: Bitcoin is defined as a virtual cryptocurrency that solely exists in electronic form. Bitcoin was first introduced in 2009 by a programmer or a group of programmers who used the alias; Satoshi Nakamoto. Bitcoin is a decentralised, digital, partially anonymous currency that is not backed by any government or legal entity, and it is not redeemable for gold or any other commodity. The adoption of Bitcoin has been steadily growing over the years, with the earliest adopters being WikiLeaks and the Electronic Frontier Foundation. Ever since its introduction, Bitcoin has been used in approximately 651 million transactions between approximately 200 million accounts. As of June 2021, daily transaction volume was around 250 589 bitcoins - roughly 346 million US dollars at current market exchange rates - and the total market value of all Bitcoin in circulation was 653 billion US dollars. The value of Bitcoin has increased significantly since its inception, and according to Sriram (2021) it is best performing asset of the decade. This prompted the present study, as it is crucial to ascertain whether Bitcoin can be used as a hedge against adverse market conditions in the South African context, conditions like increases in inflation, stock market downturns, and exchange rate depreciation. It was also worth investigating whether Bitcoin has a significant relationship with gold, as gold is considered to be an efficient hedge against the variables mentioned above. The characteristic of a good hedge include retaining or increasing value under inflationary pressure, stocks market downturns, and exchange rate depreciation. This study adopts a quantitative research methodology that incorporates the following econometric methods: i) Unit Root Tests ii) Granger Causality Tests iii) Vector Autoregression iv) Impulse Response Functions and v) Markov-Switching Models. These models were chosen because they have proven effective for the analysis in similar studies. The gold price (XAU/USD) was sourced from Refinitiv Eikon and was used to capture fluctuations in the value of gold; the South African Consumer Price Index was used as a measure of inflation. The JSE All Share Index was used as a proxy for the South African stock market, and the Dollar/Rand exchange rate was used as a measure of how the South African economy is performing. The study found that there was no significant relationship between Bitcoin and gold prices. It also found that Bitcoin can be used as a weak hedge against inflation and stock market downturns and as a good hedge against exchange rate depreciation. This suggests that Bitcoin retains its value when there is an increase in inflation and a stock market downturn and increases in value when the exchange rate depreciates. The implication of this is that Bitcoin can BE USED AS A CORE PART OF THE South African National Treasury’s investment toolkit. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Faba, Yonela
- Date: 2022-10-14
- Subjects: Bitcoin , Hedging (Finance) , Cryptocurrencies , Macroeconomics , Accounting and price fluctuations , Economic forecasting South Africa , Econometric models
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/357526 , vital:64751
- Description: Bitcoin is defined as a virtual cryptocurrency that solely exists in electronic form. Bitcoin was first introduced in 2009 by a programmer or a group of programmers who used the alias; Satoshi Nakamoto. Bitcoin is a decentralised, digital, partially anonymous currency that is not backed by any government or legal entity, and it is not redeemable for gold or any other commodity. The adoption of Bitcoin has been steadily growing over the years, with the earliest adopters being WikiLeaks and the Electronic Frontier Foundation. Ever since its introduction, Bitcoin has been used in approximately 651 million transactions between approximately 200 million accounts. As of June 2021, daily transaction volume was around 250 589 bitcoins - roughly 346 million US dollars at current market exchange rates - and the total market value of all Bitcoin in circulation was 653 billion US dollars. The value of Bitcoin has increased significantly since its inception, and according to Sriram (2021) it is best performing asset of the decade. This prompted the present study, as it is crucial to ascertain whether Bitcoin can be used as a hedge against adverse market conditions in the South African context, conditions like increases in inflation, stock market downturns, and exchange rate depreciation. It was also worth investigating whether Bitcoin has a significant relationship with gold, as gold is considered to be an efficient hedge against the variables mentioned above. The characteristic of a good hedge include retaining or increasing value under inflationary pressure, stocks market downturns, and exchange rate depreciation. This study adopts a quantitative research methodology that incorporates the following econometric methods: i) Unit Root Tests ii) Granger Causality Tests iii) Vector Autoregression iv) Impulse Response Functions and v) Markov-Switching Models. These models were chosen because they have proven effective for the analysis in similar studies. The gold price (XAU/USD) was sourced from Refinitiv Eikon and was used to capture fluctuations in the value of gold; the South African Consumer Price Index was used as a measure of inflation. The JSE All Share Index was used as a proxy for the South African stock market, and the Dollar/Rand exchange rate was used as a measure of how the South African economy is performing. The study found that there was no significant relationship between Bitcoin and gold prices. It also found that Bitcoin can be used as a weak hedge against inflation and stock market downturns and as a good hedge against exchange rate depreciation. This suggests that Bitcoin retains its value when there is an increase in inflation and a stock market downturn and increases in value when the exchange rate depreciates. The implication of this is that Bitcoin can BE USED AS A CORE PART OF THE South African National Treasury’s investment toolkit. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-10-14
Cape Fold Ecoregion fish community ecology and responses to stressors
- Authors: Broom, Casey Jay
- Date: 2022-10-14
- Subjects: Cyprinidae South Africa Western Cape , Freshwater fishes South Africa Western Cape , Cyprinidae Habitat South Africa Western Cape , Food chains (Ecology) , Restoration ecology South Africa Western Cape , Riparian restoration South Africa Western Cape
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/365644 , vital:65772 , DOI https://doi.org/10.21504/10962/365644
- Description: Freshwater fishes are in global decline and fish as a group are the most imperilled of all vertebrates. Freshwater systems are among the most threatened globally, largely owing to their comparatively high species and habitat diversity while occupying a minute fraction of the Earth’s surface. In South Africa, invasion by non-native fishes has had a devastating effect on freshwater systems across the country. Numerous other stressors and anthropogenic impacts continue to impact these systems, including habitat degradation, water abstraction and global change effects. In general, South African freshwater systems are under-studied and there is a lack of baseline biological and ecological studies on many freshwater fish species. The Cape Fold Ecoregion (CFE) of South Africa is a particularly vulnerable region, with many range-restricted species and highly fragmented native fish ranges following high invasion rates. Within the CFE, the Olifants-Doring River System (ODRS) is of primary concern owing to the high endemism and imperilled status of its freshwater fish species. The Rondegat River in the ODRS is of notable conservation value, as it hosts populations of important endemic CFE species. This river is unique, being the site of the first alien fish eradication programme of its kind in South Africa. Thus the Rondegat River, and in particular its imperilled cyprinid assemblage, is used here as a case study of the responses and community dynamics of recovering freshwater fish species. The members of this cyprinid assemblage are Sedercypris calidus, Pseudobarbus phlegethon and Labeobarbus seeberi. Sedercypris calidus and L. seeberi are listed by the International Union for the Conservation of Nature (IUCN) as “Near-Threatened”, while P. phlegethon is listed as “Endangered”. Understanding the dynamics and responses to understudied vulnerable fish communities in the wake of restoration efforts was the overarching goal of this thesis. The first chapter served as a review of current knowledge of the CFE, the Rondegat River, the myriad stressors that have impacted on or are projected to affect this region, and the freshwater fish species on which those stressors act. My first investigations served as an extension of the existing Rondegat River monitoring programme, making use of remote underwater video (RUV) data to assess relative abundance and habitat associations of the focal species (Chapter 2). A relatively limited spatial range of P. phlegethon was established, which was suggested to be a result of relatively highly specialised habitat requirements and sensitivity to disturbance. Sedercypris calidus was confirmed as a relatively more abundant and ubiquitous species across the length of the Rondegat River, sharing much of the lower and middle reaches with L. seeberi. I sought to use experimental trials of functional response, as a proxy for feeding performance, across representative temperatures and relevant prey types, in the spatially overlapping S. calidus and L. seeberi (Chapter 3). Labeobarbus seeberi generally outcompeted S. calidus across temperature treatments and prey types. The ecomorphology and diet of all three species were used to construct trophic profiles, which suggested that there was a high degree of feeding capacity overlap between L. seeberi and S. calidus, while P. phlegethon diverged from the other two species (Chapter 4). Gut content suggested that all three species overlapped broadly in diet. This indicated that the realised trophic niche of these species is similar, despite some morphological specialisation. I then used RUV data to investigate in-situ feeding behaviours, with the aim to disentangle the nuances of community dynamics and mechanisms of coexistence in the cyprinid assemblage (Chapter 5). I found that, despite the higher feeding performance of L. seeberi (Chapter 3) and its overlaps in diet and feeding capacity with S. calidus (Chapter 4), S. calidus is able to mitigate competitive pressures through foraging mode switching and exploitation of allochthonous food inputs. Evidence for further habitat and prey selectivity in Pseudobarbus phlegethon was gathered based on dependence on complex habitats and pool refugia for the majority of its feeding, supporting this species as a headwater specialist; alongside signals of its spatial and habitat use patterns (Chapter 2). While S. calidus and L. seeberi were found to be less habitat-specific than P. phlegethon, caution was noted in the potential for ongoing stressors, such as habitat destruction, loss of river connectivity and global change effects, to impact on the reproductive success of these two species. Stressors affecting the habitats and sensitive invertebrate taxa upon which all three species depend continue to threaten the Rondegat system, highlighting the need to maintain ecosystem integrity through conservation interventions. There remains significant scope to maintain restoration efforts in the Rondegat River and other river systems of the CFE, through direct conservation actions, enhanced community awareness, indigenous riparian vegetation restoration and involvement of local stakeholders in various conservation-centred activities. , Thesis (PhD) -- Faculty of Science, Ichthyology and Fisheries Science, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Broom, Casey Jay
- Date: 2022-10-14
- Subjects: Cyprinidae South Africa Western Cape , Freshwater fishes South Africa Western Cape , Cyprinidae Habitat South Africa Western Cape , Food chains (Ecology) , Restoration ecology South Africa Western Cape , Riparian restoration South Africa Western Cape
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/365644 , vital:65772 , DOI https://doi.org/10.21504/10962/365644
- Description: Freshwater fishes are in global decline and fish as a group are the most imperilled of all vertebrates. Freshwater systems are among the most threatened globally, largely owing to their comparatively high species and habitat diversity while occupying a minute fraction of the Earth’s surface. In South Africa, invasion by non-native fishes has had a devastating effect on freshwater systems across the country. Numerous other stressors and anthropogenic impacts continue to impact these systems, including habitat degradation, water abstraction and global change effects. In general, South African freshwater systems are under-studied and there is a lack of baseline biological and ecological studies on many freshwater fish species. The Cape Fold Ecoregion (CFE) of South Africa is a particularly vulnerable region, with many range-restricted species and highly fragmented native fish ranges following high invasion rates. Within the CFE, the Olifants-Doring River System (ODRS) is of primary concern owing to the high endemism and imperilled status of its freshwater fish species. The Rondegat River in the ODRS is of notable conservation value, as it hosts populations of important endemic CFE species. This river is unique, being the site of the first alien fish eradication programme of its kind in South Africa. Thus the Rondegat River, and in particular its imperilled cyprinid assemblage, is used here as a case study of the responses and community dynamics of recovering freshwater fish species. The members of this cyprinid assemblage are Sedercypris calidus, Pseudobarbus phlegethon and Labeobarbus seeberi. Sedercypris calidus and L. seeberi are listed by the International Union for the Conservation of Nature (IUCN) as “Near-Threatened”, while P. phlegethon is listed as “Endangered”. Understanding the dynamics and responses to understudied vulnerable fish communities in the wake of restoration efforts was the overarching goal of this thesis. The first chapter served as a review of current knowledge of the CFE, the Rondegat River, the myriad stressors that have impacted on or are projected to affect this region, and the freshwater fish species on which those stressors act. My first investigations served as an extension of the existing Rondegat River monitoring programme, making use of remote underwater video (RUV) data to assess relative abundance and habitat associations of the focal species (Chapter 2). A relatively limited spatial range of P. phlegethon was established, which was suggested to be a result of relatively highly specialised habitat requirements and sensitivity to disturbance. Sedercypris calidus was confirmed as a relatively more abundant and ubiquitous species across the length of the Rondegat River, sharing much of the lower and middle reaches with L. seeberi. I sought to use experimental trials of functional response, as a proxy for feeding performance, across representative temperatures and relevant prey types, in the spatially overlapping S. calidus and L. seeberi (Chapter 3). Labeobarbus seeberi generally outcompeted S. calidus across temperature treatments and prey types. The ecomorphology and diet of all three species were used to construct trophic profiles, which suggested that there was a high degree of feeding capacity overlap between L. seeberi and S. calidus, while P. phlegethon diverged from the other two species (Chapter 4). Gut content suggested that all three species overlapped broadly in diet. This indicated that the realised trophic niche of these species is similar, despite some morphological specialisation. I then used RUV data to investigate in-situ feeding behaviours, with the aim to disentangle the nuances of community dynamics and mechanisms of coexistence in the cyprinid assemblage (Chapter 5). I found that, despite the higher feeding performance of L. seeberi (Chapter 3) and its overlaps in diet and feeding capacity with S. calidus (Chapter 4), S. calidus is able to mitigate competitive pressures through foraging mode switching and exploitation of allochthonous food inputs. Evidence for further habitat and prey selectivity in Pseudobarbus phlegethon was gathered based on dependence on complex habitats and pool refugia for the majority of its feeding, supporting this species as a headwater specialist; alongside signals of its spatial and habitat use patterns (Chapter 2). While S. calidus and L. seeberi were found to be less habitat-specific than P. phlegethon, caution was noted in the potential for ongoing stressors, such as habitat destruction, loss of river connectivity and global change effects, to impact on the reproductive success of these two species. Stressors affecting the habitats and sensitive invertebrate taxa upon which all three species depend continue to threaten the Rondegat system, highlighting the need to maintain ecosystem integrity through conservation interventions. There remains significant scope to maintain restoration efforts in the Rondegat River and other river systems of the CFE, through direct conservation actions, enhanced community awareness, indigenous riparian vegetation restoration and involvement of local stakeholders in various conservation-centred activities. , Thesis (PhD) -- Faculty of Science, Ichthyology and Fisheries Science, 2022
- Full Text:
- Date Issued: 2022-10-14
Chaos!
- Ngwenya, Thembalethu Sabrina
- Authors: Ngwenya, Thembalethu Sabrina
- Date: 2022-10-14
- Subjects: Creative writing (Higher education) South Africa , Diaries -- Authorship , Books Reviews , South African prose literature (English) 21st century , South African fiction (English) 21st century
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406298 , vital:70256
- Description: Chaos! is a combination of short prose forms in fragments that tackles difficult topics such as troubled marriages, child molestation, rape, infidelity and abuse in every way, whether it is mental, emotional or physical. The stories contain a lot of horrific and violent acts that, often times in this day and age, happen behind closed doors or sometimes even openly, yet not a lot of people are ready to talk about these topics. In my thesis, I go into the minds of those that are abusive and those that are on the receiving end of abuse. In doing so, I aim to explore all the dynamics of abuse. Abusers, as I have portrayed in my thesis, tend to have a deranged sense of reasoning in performing abusive acts and one thing that is important to note is that, more than likely, in their own heads and according to their own reasoning, the behaviour that they act on is very much rational and reasonable. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Ngwenya, Thembalethu Sabrina
- Date: 2022-10-14
- Subjects: Creative writing (Higher education) South Africa , Diaries -- Authorship , Books Reviews , South African prose literature (English) 21st century , South African fiction (English) 21st century
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406298 , vital:70256
- Description: Chaos! is a combination of short prose forms in fragments that tackles difficult topics such as troubled marriages, child molestation, rape, infidelity and abuse in every way, whether it is mental, emotional or physical. The stories contain a lot of horrific and violent acts that, often times in this day and age, happen behind closed doors or sometimes even openly, yet not a lot of people are ready to talk about these topics. In my thesis, I go into the minds of those that are abusive and those that are on the receiving end of abuse. In doing so, I aim to explore all the dynamics of abuse. Abusers, as I have portrayed in my thesis, tend to have a deranged sense of reasoning in performing abusive acts and one thing that is important to note is that, more than likely, in their own heads and according to their own reasoning, the behaviour that they act on is very much rational and reasonable. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
Characterisation of two novel ferrocenyl benzoxazines as in vitro triple-negative breast cancer inhibitors
- Authors: Mhlanga, Richwell
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/365689 , vital:65776
- Description: Thesis access embargoed. Expected released date early 2025. , Thesis (PhD) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Mhlanga, Richwell
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/365689 , vital:65776
- Description: Thesis access embargoed. Expected released date early 2025. , Thesis (PhD) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
Characterising the sleep wake behaviour of late adolescents living in rural and township areas surrounding Alice in the Eastern Cape of South Africa
- Authors: Dlepu, Phelokazi
- Date: 2022-10-14
- Subjects: Teenagers Sleep South Africa Alice , Rural teenagers South Africa Alice , Sleep-wake cycle
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362808 , vital:65364
- Description: Introduction: School going adolescents have been identified as a group that is at risk of obtaining insufficient sleep due to shortened and irregular sleep, all of which can affect the overall wellbeing of adolescents. While there has been extenstive research on adolescent sleep around the world, research in South Africa has been limited. Of the research performed in this context, most has been conducted in city or urban contexts, but there has been comparatively less research on sleep in adolescents from rural and township areas. Therefore, this study focused on characterising and comparing the sleep-wake behaviour of late adolescents from selected rural and township areas in Alice in the Eastern Cape of South Africa. Methods: An adapted version School Sleep Habits Survey (SSHS) was included in the study and assessed demographic, academic, sleep-wake behaviour, lifestyle, and behavioural information of adolescents from rural and township schools in and around Alice. The survey was distributed physically to all the learners from four co-educational rural and township schools. The responses to the survey were analysed with descriptive and non-parametric inferential statistics, as all data were not normally distributed. Results: A total of 123 learners completed the survey. All the participants were in Grade 12, aged 16 to 26 years (median =18, IQR= 18-19) from rural (n=28) and township (n=95) schools. Seventy-four female and 49 male learners participated in the study. Within the sample, there were also a group of participants who were not adolescents (n=22) whose age ranged between 20 and 26. Reported sleep during both the week and weekend (7hours) was lower than both the recommended duration for adolescents and their own self-reported sleep need of a median of 8 hours and 14 minutes. Bedtimes were significantly earlier on weekdays than weekends. The need to do homework and feeling sleepy were cited as the main reasons for going to sleep during the week and the weekends. Wake times on weekdays and weekends did not differ, with most learners citing being woken up by an alarm clock as the main reason for waking during both weekdays and weekends. Most learners (n=47; 38%) reported walking to get to school, while 41 (33%) relied on public transport to get to school. There were no significant effects of gender or of being rural and township scholars in relation to their sleep variables. Comparisons between non-adolescents and adolescents revealed that non-adolescents reported sleeping longer (7 hours and 30 minutes) compared to adolescents (7 hours) than adolescents did on weekends. As a group, the learners in this sample were morningness-orientated in terms of chronotype, presented with low day time sleepiness, some evidence of sleep-wake behaviour problems and of depressive mood symptoms. Nearly half (n=53; 43%) the group reported napping occasionally on school days. In terms of caffeine consumption, just over half (n=64; 52%) of the learners reported never consuming caffeinated substances such as soda, coffee, or tea. Conclusions: The reported sleep duration of learners in this study was consistent on both the week and weekend but was shorter than the recommended 8-10 hours for late adolescents. While learners in this sample reported early bedtimes, sleep was likely curtailed by the early rise times due to the contextual constraints where scholars had to commute, by either walking or taking public transport, to make the early school start times. There was a high prevalence of sleep disturbances in this sample however, the effects of this (increased daytime sleepiness) were lower which can be attributed to low reported prevalence of caffeine consumption combined with the high prevalence of reported day time napping on school days and weekends. While only a snapshot, the results of this study support previous research that has highlighted the challenges that many adolescents across the globe experience when it comes to obtaining enough sleep. The results of this study highlighted the need for more research to understand the sleep-wake behaviours of learners and their lifestyles more objectively. Given the early starts for many participants in this study, interventions such as delaying school start times may help to improve the amount of sleep that learners get during the week. However, extensive consultations would be needed to ensure that systemic changes that aim to improve sleep of adolescents are applicable for the context of rural and townships areas in South Africa. , Thesis (MSc) -- Faculty of Science, Human Kinetics and Ergonomics, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Dlepu, Phelokazi
- Date: 2022-10-14
- Subjects: Teenagers Sleep South Africa Alice , Rural teenagers South Africa Alice , Sleep-wake cycle
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362808 , vital:65364
- Description: Introduction: School going adolescents have been identified as a group that is at risk of obtaining insufficient sleep due to shortened and irregular sleep, all of which can affect the overall wellbeing of adolescents. While there has been extenstive research on adolescent sleep around the world, research in South Africa has been limited. Of the research performed in this context, most has been conducted in city or urban contexts, but there has been comparatively less research on sleep in adolescents from rural and township areas. Therefore, this study focused on characterising and comparing the sleep-wake behaviour of late adolescents from selected rural and township areas in Alice in the Eastern Cape of South Africa. Methods: An adapted version School Sleep Habits Survey (SSHS) was included in the study and assessed demographic, academic, sleep-wake behaviour, lifestyle, and behavioural information of adolescents from rural and township schools in and around Alice. The survey was distributed physically to all the learners from four co-educational rural and township schools. The responses to the survey were analysed with descriptive and non-parametric inferential statistics, as all data were not normally distributed. Results: A total of 123 learners completed the survey. All the participants were in Grade 12, aged 16 to 26 years (median =18, IQR= 18-19) from rural (n=28) and township (n=95) schools. Seventy-four female and 49 male learners participated in the study. Within the sample, there were also a group of participants who were not adolescents (n=22) whose age ranged between 20 and 26. Reported sleep during both the week and weekend (7hours) was lower than both the recommended duration for adolescents and their own self-reported sleep need of a median of 8 hours and 14 minutes. Bedtimes were significantly earlier on weekdays than weekends. The need to do homework and feeling sleepy were cited as the main reasons for going to sleep during the week and the weekends. Wake times on weekdays and weekends did not differ, with most learners citing being woken up by an alarm clock as the main reason for waking during both weekdays and weekends. Most learners (n=47; 38%) reported walking to get to school, while 41 (33%) relied on public transport to get to school. There were no significant effects of gender or of being rural and township scholars in relation to their sleep variables. Comparisons between non-adolescents and adolescents revealed that non-adolescents reported sleeping longer (7 hours and 30 minutes) compared to adolescents (7 hours) than adolescents did on weekends. As a group, the learners in this sample were morningness-orientated in terms of chronotype, presented with low day time sleepiness, some evidence of sleep-wake behaviour problems and of depressive mood symptoms. Nearly half (n=53; 43%) the group reported napping occasionally on school days. In terms of caffeine consumption, just over half (n=64; 52%) of the learners reported never consuming caffeinated substances such as soda, coffee, or tea. Conclusions: The reported sleep duration of learners in this study was consistent on both the week and weekend but was shorter than the recommended 8-10 hours for late adolescents. While learners in this sample reported early bedtimes, sleep was likely curtailed by the early rise times due to the contextual constraints where scholars had to commute, by either walking or taking public transport, to make the early school start times. There was a high prevalence of sleep disturbances in this sample however, the effects of this (increased daytime sleepiness) were lower which can be attributed to low reported prevalence of caffeine consumption combined with the high prevalence of reported day time napping on school days and weekends. While only a snapshot, the results of this study support previous research that has highlighted the challenges that many adolescents across the globe experience when it comes to obtaining enough sleep. The results of this study highlighted the need for more research to understand the sleep-wake behaviours of learners and their lifestyles more objectively. Given the early starts for many participants in this study, interventions such as delaying school start times may help to improve the amount of sleep that learners get during the week. However, extensive consultations would be needed to ensure that systemic changes that aim to improve sleep of adolescents are applicable for the context of rural and townships areas in South Africa. , Thesis (MSc) -- Faculty of Science, Human Kinetics and Ergonomics, 2022
- Full Text:
- Date Issued: 2022-10-14
Chemostratigraphy of the lowermost iron-manganese cycle of the Hotazel Formation, and implications for its primary depositional environment
- Authors: Masoabi, Ntseka Thomas
- Date: 2022-10-14
- Subjects: Chemostratigraphy , Great Oxygenation Event , Manganese ores Geology South Africa Northern Cape , Banded iron formation
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362938 , vital:65376
- Description: The giant Kalahari Manganese Field (KMF), located in the Northern Cape Province, South Africa, comprises approximately half of the world’s manganese resources, estimated at about eight billion tons at grades ranging from 20-48 wt%. The KMF is linked to a period in geological time when the Earth’s atmospheric and oceanic conditions underwent a major transition from oxygen-deficient to oxygen-enriched conditions – an event famously referred to as the Great Oxidation Event (GOE) that occurred around 2.4 Ga. The KMF deposits are hosted in Banded Iron Formation (BIF) of the Paleoproterozoic Hotazel Formation in the uppermost Transvaal Supergroup. The sedimentary Mn ores are interbedded with Hotazel BIF in the form of three alternating depositional cycles of BIF, transitional hematite lutite and laminated, carbonate-rich manganese ore. The lowermost and thickest of the three cycles is the most economically significant and has been mined for several decades on a large scale from the southernmost KMF. In this study, two drill cores from the southern KMF were inspected, logged and sampled at a high resolution of approximately half-meter interval per sample. The selected cores, namely G774, capturing the lower portion of the Hotazel Formation from the Mamatwan locality, and MP-56, capturing the corresponding portion from the Middleplaats locality, are geographically proximal to each other, with a horizontal distance of roughly 3 km separating the two of them. The G774 drill core is characterized by a conspicuously thick manganese layer covering a thickness of 50 m, with the overlying BIF reaching a total thickness of 11 m. The MP-56 drill core, on the other hand, has a relatively thinner corresponding manganese layer of 30 m in thickness, while the overlying BIF layer exhibits a thickness of 24 m. The extent of sampling up-section was constrained by an apparently coeval black shale layer which represents the chosen upper stratigraphic marker for the lower part of the Hotazel section in the broader area that is under investigation in this thesis. That way, a high resolution chemostratigraphic approach was employed to elucidate the potential factors contributing to the relative sedimentary lateral thickness variations seen across the southernmost KMF. High-resolution geochemical data were used to explore relationships and signals that might constrain relative precipitation rates for iron and manganese against detrital species, fluctuating redox conditions in the original environment of deposition, and chemostratigraphic correlation. All geochemical data (i.e., major oxides, minor and trace elements and carbonate carbon isotopes) were obtained respectively through employing X-ray Fluorescence (XRF), Laser Ablation Inductively Coupled Mass Spectrometry (ICP-MS), and Gas-source mass spectrometry. Comparative considerations made between the bulk geochemistry of the two sequences (i.e., Mamatwan and Middleplaats sections) reveal that periods of high-Mn deposition in the Hotazel Formation appear to be very Ca-carbonate rich (as indicated by high CaO, LOI and Sr concentrations). This, in turn, suggests that the Mn abundance is in the Hotazel ores is controlled mainly by the silicate phase braunite and is diluted by the deposition of Ca-carbonate through time. Bulk-rock concentration results for trace elements of the High Field Strength Element (HFSE) group (namely Zr, Hf, Y, Nb and Sc) were utilized to constrain the rates of either clastic and/or volcanic detrital inputs, as they traditionally represent refractory mineral particles of a common detrital/volcanic origin. The two chemosedimentary sequences preserve these elements in very low and thus quantitatively negligible concentrations – suggesting that the Hotazel depositional environment received very low and insignificant influx of a terrigeneous detrital component. A selection of these elements was therefore used to deduce, with caution, the relative as opposed to absolute precipitation rate of the major chemical constituents (i.e., Fe + Si vs Mn + carbonate), assuming a constant detrital flux through time. It was found that the relative abundances of Zr, Y and Nb is roughly 1.5 – 2 times as high in the BIF lithofacies relative to the Mn ones at both localities. This led to the inference that the Mn-enriched portion of the sediment must have been deposited at approximately twice the rate that the Fe-rich (BIF) portion was originally deposited. In terms of redox-sensitive elements, the elements Co and Mo seem to reveal the most valuable insights into the redox environment of primary chemical deposition. Cobalt displays a unique pattern in that its highest concentration is attained at the hematite lutite transitions (similarly with the REE in this regard), while very low and seemingly invariant concentration is exhibited within the core of the main orebodies. The same pattern seems to be reproduced to a degree by the corresponding bulk MgO component, whereby MgO abundance maxima are associated with the basal hematite lutite and the hematitic flanks of the Mn-ore zone, while the core of the Mn-rich layer attains relatively low and essentially invariant MgO concentrations. This implicates a close and direct association of Co with the hematite fraction of the rocks and a concurrent enrichment in Mn-rich carbonate (dolomite). On the other hand, Mo seems to have a direct and clear association with peak MnO2 content of the rocks, which in turn presents a high possibility of Mo having adsorbed onto primary Mn-oxyhydroxides in the water column, thus providing evidence that Mn-oxide must have acted as an important Mo sink, at least locally. Finally, the carbonate-carbon isotope results provide a useful tool that brings the two stratigraphic sections “together“, in conjunction with other correlatable chemostratigraphic parameters (e.g. Co, Mg). The results demonstrate that bulk carbon fluxes and isotopic signals in the sediments must reflect primary processes of deposition, and that correlation across two apparently disparate lithostratigraphic sections can be effected. The key finding is that, at times, manganese deposition in one part of a vii stratified basin was evidently accompanied by simultaneous BIF deposition at another, thus painting a very complex picture of massive primary chemical precipitation of Fe and Mn at the dawn of the GOE. , Thesis (MSc) -- Faculty of Science, Geology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Masoabi, Ntseka Thomas
- Date: 2022-10-14
- Subjects: Chemostratigraphy , Great Oxygenation Event , Manganese ores Geology South Africa Northern Cape , Banded iron formation
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/362938 , vital:65376
- Description: The giant Kalahari Manganese Field (KMF), located in the Northern Cape Province, South Africa, comprises approximately half of the world’s manganese resources, estimated at about eight billion tons at grades ranging from 20-48 wt%. The KMF is linked to a period in geological time when the Earth’s atmospheric and oceanic conditions underwent a major transition from oxygen-deficient to oxygen-enriched conditions – an event famously referred to as the Great Oxidation Event (GOE) that occurred around 2.4 Ga. The KMF deposits are hosted in Banded Iron Formation (BIF) of the Paleoproterozoic Hotazel Formation in the uppermost Transvaal Supergroup. The sedimentary Mn ores are interbedded with Hotazel BIF in the form of three alternating depositional cycles of BIF, transitional hematite lutite and laminated, carbonate-rich manganese ore. The lowermost and thickest of the three cycles is the most economically significant and has been mined for several decades on a large scale from the southernmost KMF. In this study, two drill cores from the southern KMF were inspected, logged and sampled at a high resolution of approximately half-meter interval per sample. The selected cores, namely G774, capturing the lower portion of the Hotazel Formation from the Mamatwan locality, and MP-56, capturing the corresponding portion from the Middleplaats locality, are geographically proximal to each other, with a horizontal distance of roughly 3 km separating the two of them. The G774 drill core is characterized by a conspicuously thick manganese layer covering a thickness of 50 m, with the overlying BIF reaching a total thickness of 11 m. The MP-56 drill core, on the other hand, has a relatively thinner corresponding manganese layer of 30 m in thickness, while the overlying BIF layer exhibits a thickness of 24 m. The extent of sampling up-section was constrained by an apparently coeval black shale layer which represents the chosen upper stratigraphic marker for the lower part of the Hotazel section in the broader area that is under investigation in this thesis. That way, a high resolution chemostratigraphic approach was employed to elucidate the potential factors contributing to the relative sedimentary lateral thickness variations seen across the southernmost KMF. High-resolution geochemical data were used to explore relationships and signals that might constrain relative precipitation rates for iron and manganese against detrital species, fluctuating redox conditions in the original environment of deposition, and chemostratigraphic correlation. All geochemical data (i.e., major oxides, minor and trace elements and carbonate carbon isotopes) were obtained respectively through employing X-ray Fluorescence (XRF), Laser Ablation Inductively Coupled Mass Spectrometry (ICP-MS), and Gas-source mass spectrometry. Comparative considerations made between the bulk geochemistry of the two sequences (i.e., Mamatwan and Middleplaats sections) reveal that periods of high-Mn deposition in the Hotazel Formation appear to be very Ca-carbonate rich (as indicated by high CaO, LOI and Sr concentrations). This, in turn, suggests that the Mn abundance is in the Hotazel ores is controlled mainly by the silicate phase braunite and is diluted by the deposition of Ca-carbonate through time. Bulk-rock concentration results for trace elements of the High Field Strength Element (HFSE) group (namely Zr, Hf, Y, Nb and Sc) were utilized to constrain the rates of either clastic and/or volcanic detrital inputs, as they traditionally represent refractory mineral particles of a common detrital/volcanic origin. The two chemosedimentary sequences preserve these elements in very low and thus quantitatively negligible concentrations – suggesting that the Hotazel depositional environment received very low and insignificant influx of a terrigeneous detrital component. A selection of these elements was therefore used to deduce, with caution, the relative as opposed to absolute precipitation rate of the major chemical constituents (i.e., Fe + Si vs Mn + carbonate), assuming a constant detrital flux through time. It was found that the relative abundances of Zr, Y and Nb is roughly 1.5 – 2 times as high in the BIF lithofacies relative to the Mn ones at both localities. This led to the inference that the Mn-enriched portion of the sediment must have been deposited at approximately twice the rate that the Fe-rich (BIF) portion was originally deposited. In terms of redox-sensitive elements, the elements Co and Mo seem to reveal the most valuable insights into the redox environment of primary chemical deposition. Cobalt displays a unique pattern in that its highest concentration is attained at the hematite lutite transitions (similarly with the REE in this regard), while very low and seemingly invariant concentration is exhibited within the core of the main orebodies. The same pattern seems to be reproduced to a degree by the corresponding bulk MgO component, whereby MgO abundance maxima are associated with the basal hematite lutite and the hematitic flanks of the Mn-ore zone, while the core of the Mn-rich layer attains relatively low and essentially invariant MgO concentrations. This implicates a close and direct association of Co with the hematite fraction of the rocks and a concurrent enrichment in Mn-rich carbonate (dolomite). On the other hand, Mo seems to have a direct and clear association with peak MnO2 content of the rocks, which in turn presents a high possibility of Mo having adsorbed onto primary Mn-oxyhydroxides in the water column, thus providing evidence that Mn-oxide must have acted as an important Mo sink, at least locally. Finally, the carbonate-carbon isotope results provide a useful tool that brings the two stratigraphic sections “together“, in conjunction with other correlatable chemostratigraphic parameters (e.g. Co, Mg). The results demonstrate that bulk carbon fluxes and isotopic signals in the sediments must reflect primary processes of deposition, and that correlation across two apparently disparate lithostratigraphic sections can be effected. The key finding is that, at times, manganese deposition in one part of a vii stratified basin was evidently accompanied by simultaneous BIF deposition at another, thus painting a very complex picture of massive primary chemical precipitation of Fe and Mn at the dawn of the GOE. , Thesis (MSc) -- Faculty of Science, Geology, 2022
- Full Text:
- Date Issued: 2022-10-14
Colonial displacements and African coping strategies: The experience of BaTonga of Binga, Zimbabwe, 1956-2008
- Authors: Dhodho, Codelia Govha
- Date: 2022-10-14
- Subjects: Tonga (Zambezi people) Refugees , Subsistence farming Zambezi River Valley , Hunger Zambezi River Valley , Food security Zambezi River Valley , Adaptability (Psychology) , Food relief Zambezi River Valley , Non-governmental organizations , Kariba Dam (Zambia and Zimbabwe)
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/327642 , vital:61139 , DOI 10.21504/10962/327642
- Description: This study examines the challenges faced by BaTonga in livelihood reconstruction after involuntary displacement and resettlement from the Zambezi valley to pave way for the Kariba dam reservoir. It shows how they were forcibly evicted without compensation because of the racist policies of Southern Rhodesia. Their resettlement into an arid region infested with marauding elephants, malaria and tsetse fly undermined their complex livelihoods and eroded their self-sufficiency, but the study argues that they were active and resilient agents who adopted complex coping strategies. It shows how they had to adapt to dry-land farming and counter the effects of wildlife which plundered their crops and managed to secure the harvest in the drought-prone region. The study shows that although they adopted precarious livelihoods, they managed to survive under extreme circumstances for decades without any external assistance until the coming of NGOs who began to distribute free food from 1982. It argues that prolonged distribution of emergence food aid may not have been necessary, but its coming for almost three decades largely served political interests of both the NGOs and their governments. This perpetuated poverty as BaTonga also manipulated its distribution as a coping strategy against fragile livelihoods. This caused dependency which further plunged them into chronic food insecurity because they abandoned their traditional coping strategies. The study argues that both the colonial and postcolonial government as well as NGOs failed to address the root causes of livelihood insecurity in Binga for the five decades under study. It is therefore the contention of this study that the problem of food insecurity in Binga was not only an issue of recurring drought but was deeply rooted and pervasive due to multiple complex factors which made it difficult for the people to establish sustainable food production after displacement. , Thesis (PhD) -- Faculty of Humanities, History, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Dhodho, Codelia Govha
- Date: 2022-10-14
- Subjects: Tonga (Zambezi people) Refugees , Subsistence farming Zambezi River Valley , Hunger Zambezi River Valley , Food security Zambezi River Valley , Adaptability (Psychology) , Food relief Zambezi River Valley , Non-governmental organizations , Kariba Dam (Zambia and Zimbabwe)
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/327642 , vital:61139 , DOI 10.21504/10962/327642
- Description: This study examines the challenges faced by BaTonga in livelihood reconstruction after involuntary displacement and resettlement from the Zambezi valley to pave way for the Kariba dam reservoir. It shows how they were forcibly evicted without compensation because of the racist policies of Southern Rhodesia. Their resettlement into an arid region infested with marauding elephants, malaria and tsetse fly undermined their complex livelihoods and eroded their self-sufficiency, but the study argues that they were active and resilient agents who adopted complex coping strategies. It shows how they had to adapt to dry-land farming and counter the effects of wildlife which plundered their crops and managed to secure the harvest in the drought-prone region. The study shows that although they adopted precarious livelihoods, they managed to survive under extreme circumstances for decades without any external assistance until the coming of NGOs who began to distribute free food from 1982. It argues that prolonged distribution of emergence food aid may not have been necessary, but its coming for almost three decades largely served political interests of both the NGOs and their governments. This perpetuated poverty as BaTonga also manipulated its distribution as a coping strategy against fragile livelihoods. This caused dependency which further plunged them into chronic food insecurity because they abandoned their traditional coping strategies. The study argues that both the colonial and postcolonial government as well as NGOs failed to address the root causes of livelihood insecurity in Binga for the five decades under study. It is therefore the contention of this study that the problem of food insecurity in Binga was not only an issue of recurring drought but was deeply rooted and pervasive due to multiple complex factors which made it difficult for the people to establish sustainable food production after displacement. , Thesis (PhD) -- Faculty of Humanities, History, 2022
- Full Text:
- Date Issued: 2022-10-14
Composition Portfolio
- Authors: Hanmer, Paul Dylan
- Date: 2022-10-14
- Subjects: Composition (Music) , String quartets Scores , Symphonies Scores , Music South Africa
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/327283 , vital:61100 , DOI 10.21504/10962/327283
- Description: Extract from Introduction: “In the cover bands I worked with, I used to do what all my colleagues in these bands were doing to learn and remember repertoire; transcribe “by ear” and then rehearse with the whole band. Later, when I joined “909” [a cover band named after the “909” model of drum-box developed and built by the Japanese company, Roland] I learned to extend that skill by notating my transcriptions and then playing from these self-made keyboard parts. All the instrumentalists in that band likewise played from their own notated transcriptions and, from that time onward it became rarer for me to do any kind of performance work without a set of self-made parts to read from or refer to. I had thus reverted to performing from musical notation. Even later, when I became involved almost exclusively in improvisational music performance, I never quite abandoned the notion of having notated keyboard or piano parts to hand, as a reference or guide. Since about 1990, I have led a life that has increasingly left pop music behind and instead embraced working with improvising musicians; those who wish to explore South African folk idioms in their compositional and performance output, as well as others who have a deep love of jazz music. At the same time, I have re-entered the realm of classical music and music-making; often through writing arrangements of my own music, which would incorporate classically trained players, as well as in response to commissions to compose [for particular musicians or groups of musicians] fully notated pieces of music – such as the works in this PhD portfolio. Yet, there are many circumstantial factors that feed into my composing, and exert an influence on my creativity. A major step in this particular direction came during 2002 when composer, Michael Blake, asked me to contribute to The Bow Project. This commission brought me into close contact with the [then intact and very active] Sontonga Quartet. Several further requests for, and commissions of, new works followed on from there. Two such works constitute the major portion of the portfolio to which these reflexive commentaries refer.” , Thesis (PhD) -- Faculty of Humanities, Music and Musicology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Hanmer, Paul Dylan
- Date: 2022-10-14
- Subjects: Composition (Music) , String quartets Scores , Symphonies Scores , Music South Africa
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/327283 , vital:61100 , DOI 10.21504/10962/327283
- Description: Extract from Introduction: “In the cover bands I worked with, I used to do what all my colleagues in these bands were doing to learn and remember repertoire; transcribe “by ear” and then rehearse with the whole band. Later, when I joined “909” [a cover band named after the “909” model of drum-box developed and built by the Japanese company, Roland] I learned to extend that skill by notating my transcriptions and then playing from these self-made keyboard parts. All the instrumentalists in that band likewise played from their own notated transcriptions and, from that time onward it became rarer for me to do any kind of performance work without a set of self-made parts to read from or refer to. I had thus reverted to performing from musical notation. Even later, when I became involved almost exclusively in improvisational music performance, I never quite abandoned the notion of having notated keyboard or piano parts to hand, as a reference or guide. Since about 1990, I have led a life that has increasingly left pop music behind and instead embraced working with improvising musicians; those who wish to explore South African folk idioms in their compositional and performance output, as well as others who have a deep love of jazz music. At the same time, I have re-entered the realm of classical music and music-making; often through writing arrangements of my own music, which would incorporate classically trained players, as well as in response to commissions to compose [for particular musicians or groups of musicians] fully notated pieces of music – such as the works in this PhD portfolio. Yet, there are many circumstantial factors that feed into my composing, and exert an influence on my creativity. A major step in this particular direction came during 2002 when composer, Michael Blake, asked me to contribute to The Bow Project. This commission brought me into close contact with the [then intact and very active] Sontonga Quartet. Several further requests for, and commissions of, new works followed on from there. Two such works constitute the major portion of the portfolio to which these reflexive commentaries refer.” , Thesis (PhD) -- Faculty of Humanities, Music and Musicology, 2022
- Full Text:
- Date Issued: 2022-10-14
Conceptualising mental distress from an African psychology paradigm: using an interpretative phenomenological analysis of the views of traditional healers
- Nabo-Bazana, Sandisiwe Sifanelwe
- Authors: Nabo-Bazana, Sandisiwe Sifanelwe
- Date: 2022-10-14
- Subjects: Healers South Africa , Traditional healer , Mental distress , Black psychology , Afrocentrism
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406213 , vital:70249
- Description: With South Africa's long history of colonialism and racial oppression, there are still services in the country that many South Africans cannot relate to, including psychology. Research shows that many South Africans experience and are affected by mental distress due to several factors, including poverty, unemployment, and traumatic experiences. Managing and treating such distress has always been challenging for most South Africans. Some debates question the relevance of psychological services from the West in a South African context. This study explores other approaches to psychology that look beyond the Biopsychosocial model when dealing with certain types of disorders in an African context. African psychology, or the Afrocentric approach, looks at what is beneath the surface, not just the presenting problem. Mainstream psychology strives to be universal and applicable to all. However, African psychology disagrees with this notion. African psychology perceives human beings as strongly influenced by social and cultural influences. The focus of this approach includes the spiritual realm and the attached meanings. There is evidence for the need to merge Traditional and Western medicine. The research methodology for this study is qualitative, using Interpretative Phenomenological Analysis. IPA allows for a critical engagement with the ways in which participants construct their reality. The researcher carried out semi-structured interviews to enable participants, all traditional healers (3 female and 2 male), to narrate their experiences dealing with mentally distressed clients. The accounts of these traditional healers were analysed focusing on people who have experienced mental distress. From the analysis and synthesis of the themes, findings illustrate how traditional healers conceptualise and construct mental distress from an African Psychology paradigm. An emerging core theme was the importance of the divine call and its influence on the chosen treatments. More studies are needed to illustrate the potential for collaboration between African Traditional healing and EuroAmerican healing practices, to provide holistic services to people in need. , Thesis (MA) -- Faculty of Humanities, Psychology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Nabo-Bazana, Sandisiwe Sifanelwe
- Date: 2022-10-14
- Subjects: Healers South Africa , Traditional healer , Mental distress , Black psychology , Afrocentrism
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406213 , vital:70249
- Description: With South Africa's long history of colonialism and racial oppression, there are still services in the country that many South Africans cannot relate to, including psychology. Research shows that many South Africans experience and are affected by mental distress due to several factors, including poverty, unemployment, and traumatic experiences. Managing and treating such distress has always been challenging for most South Africans. Some debates question the relevance of psychological services from the West in a South African context. This study explores other approaches to psychology that look beyond the Biopsychosocial model when dealing with certain types of disorders in an African context. African psychology, or the Afrocentric approach, looks at what is beneath the surface, not just the presenting problem. Mainstream psychology strives to be universal and applicable to all. However, African psychology disagrees with this notion. African psychology perceives human beings as strongly influenced by social and cultural influences. The focus of this approach includes the spiritual realm and the attached meanings. There is evidence for the need to merge Traditional and Western medicine. The research methodology for this study is qualitative, using Interpretative Phenomenological Analysis. IPA allows for a critical engagement with the ways in which participants construct their reality. The researcher carried out semi-structured interviews to enable participants, all traditional healers (3 female and 2 male), to narrate their experiences dealing with mentally distressed clients. The accounts of these traditional healers were analysed focusing on people who have experienced mental distress. From the analysis and synthesis of the themes, findings illustrate how traditional healers conceptualise and construct mental distress from an African Psychology paradigm. An emerging core theme was the importance of the divine call and its influence on the chosen treatments. More studies are needed to illustrate the potential for collaboration between African Traditional healing and EuroAmerican healing practices, to provide holistic services to people in need. , Thesis (MA) -- Faculty of Humanities, Psychology, 2022
- Full Text:
- Date Issued: 2022-10-14