Implementing a sexual and reproductive citizenship intervention refinement instrument for youth sexuality education: a formative evaluation
- Authors: Mthethwa, Thobile
- Date: 2023-10-13
- Subjects: Sexuality education , Sexual and reproductive health and rights , Reproductive rights , Sexual citizenship , Entitlement
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/425008 , vital:72201
- Description: While Out of School sexuality education (SE) programmes in South Africa have attempted to bridge the gap in the number of young people who receive SE, there is still a large number of youth between the age groups of 15 to 24 years who lack adequate sexual knowledge. The manner in which sex education is taught and its accessibility is accompanied by challenges, in particular in relation to empowerment. To better understand the effectiveness of sexual education programmes, evaluations of their content is needed. Therefore, the purpose of this study was to investigate whether and how an Out of school SE programme run by Partners in Sexual Health (PSH) promotes understandings of sexual and reproductive citizenship. A formative evaluation of their sexual and reproductive health and rights (SRHR) facilitator’s manual was conducted (owing to COVID the actual programme was not run in the year data for this thesis were collected). To help perform the formative evaluation, the feminist sexual and reproductive citizenship (SRC) framework as conceptualized by Macleod and Vincent (2014) was used. The SRC framework consists of five key principles that, it is suggested, need to be adopted for SE programmes to be inclusive, namely, citizenship as status and practice, differentiated citizenship, private and public interstice, and politics of recognition, redistribution and reparation. An additional principle of inclusive and process-based educational practices was added into the five key principles. To analyse data, template analysis was used which enabled the researcher to create a priori of themes using the Masizixhobise toolkit which is informed by the SRC framework. Findings from this study reveal the interconnectedness between the different citizenship principles. Moreover, while the PSH SRHR programme promotes principles of the SRC framework, there are aspects of the SRC that are lacking from the programme. Therefore, the SRHR manual needs to take into account a spectrum of issues which include but are not limited to the incorporation of sexually diverse differently-abled individuals' sexual experiences and challenges when it comes to accessing SE. This means for SE programmes to achieve inclusivity and to be empowering, they need to encourage individuals to be agentic beings, engage in informed decision-making and encourage young people to take up their rights. , Thesis (MA) -- Faculty of Humanities, Psychology, 2023
- Full Text:
- Date Issued: 2023-10-13
- Authors: Mthethwa, Thobile
- Date: 2023-10-13
- Subjects: Sexuality education , Sexual and reproductive health and rights , Reproductive rights , Sexual citizenship , Entitlement
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/425008 , vital:72201
- Description: While Out of School sexuality education (SE) programmes in South Africa have attempted to bridge the gap in the number of young people who receive SE, there is still a large number of youth between the age groups of 15 to 24 years who lack adequate sexual knowledge. The manner in which sex education is taught and its accessibility is accompanied by challenges, in particular in relation to empowerment. To better understand the effectiveness of sexual education programmes, evaluations of their content is needed. Therefore, the purpose of this study was to investigate whether and how an Out of school SE programme run by Partners in Sexual Health (PSH) promotes understandings of sexual and reproductive citizenship. A formative evaluation of their sexual and reproductive health and rights (SRHR) facilitator’s manual was conducted (owing to COVID the actual programme was not run in the year data for this thesis were collected). To help perform the formative evaluation, the feminist sexual and reproductive citizenship (SRC) framework as conceptualized by Macleod and Vincent (2014) was used. The SRC framework consists of five key principles that, it is suggested, need to be adopted for SE programmes to be inclusive, namely, citizenship as status and practice, differentiated citizenship, private and public interstice, and politics of recognition, redistribution and reparation. An additional principle of inclusive and process-based educational practices was added into the five key principles. To analyse data, template analysis was used which enabled the researcher to create a priori of themes using the Masizixhobise toolkit which is informed by the SRC framework. Findings from this study reveal the interconnectedness between the different citizenship principles. Moreover, while the PSH SRHR programme promotes principles of the SRC framework, there are aspects of the SRC that are lacking from the programme. Therefore, the SRHR manual needs to take into account a spectrum of issues which include but are not limited to the incorporation of sexually diverse differently-abled individuals' sexual experiences and challenges when it comes to accessing SE. This means for SE programmes to achieve inclusivity and to be empowering, they need to encourage individuals to be agentic beings, engage in informed decision-making and encourage young people to take up their rights. , Thesis (MA) -- Faculty of Humanities, Psychology, 2023
- Full Text:
- Date Issued: 2023-10-13
An empirical analysis of the interplay among bank competition, bank stability and regulation: a case study of banks in Zimbabwe
- Nyamuronda, Gracious Varayidzo
- Authors: Nyamuronda, Gracious Varayidzo
- Date: 2023-03-31
- Subjects: Capital adequacy ratio , Autoregression (Statistics) , Panel analysis , Competition Zimbabwe , Banks and banking Zimbabwe , Bank regulation , Economic stabilization Zimbabwe
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/419473 , vital:71647
- Description: This study empirically examined the interconnection among bank competition, regulation and stability of eighteen Zimbabwean banks during the period 2011-2017. Zscore, Capital Adequacy Ratio (CAD), and Loans market share and Deposits market share which are proxies for stability, regulation and competition respectively were examined firstly using the Panel Vector Autoregressive (PVAR) model. Model 1 used loans market share as a proxy for competition and model 2 used deposits market share instead. The stability test using Eigenvalue Stability Condition showed that the PVAR model is unstable. Secondly, the above variables and five bank specific variables (i.e., credit risk, management efficiency, liquidity, return on assets and bank size) were estimated using the Feasible Generalised Least Squares (FGLS) model. The study documents that competition positively contributed to stability and regulation negatively influenced the stability of the Zimbabwean banks. Meanwhile, bank size and credit risk have a negative relationship with stability; management efficiency and liquidity have a positive relationship. Return On Assets has a negative and positive relationship with stability in model 1 and model 2, respectively. The findings implied that to enhance stability, banks must experience a competitive environment, reasonably low minimum capital requirements and cautiously designed regulatory frameworks. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2023
- Full Text:
- Date Issued: 2023-03-31
- Authors: Nyamuronda, Gracious Varayidzo
- Date: 2023-03-31
- Subjects: Capital adequacy ratio , Autoregression (Statistics) , Panel analysis , Competition Zimbabwe , Banks and banking Zimbabwe , Bank regulation , Economic stabilization Zimbabwe
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/419473 , vital:71647
- Description: This study empirically examined the interconnection among bank competition, regulation and stability of eighteen Zimbabwean banks during the period 2011-2017. Zscore, Capital Adequacy Ratio (CAD), and Loans market share and Deposits market share which are proxies for stability, regulation and competition respectively were examined firstly using the Panel Vector Autoregressive (PVAR) model. Model 1 used loans market share as a proxy for competition and model 2 used deposits market share instead. The stability test using Eigenvalue Stability Condition showed that the PVAR model is unstable. Secondly, the above variables and five bank specific variables (i.e., credit risk, management efficiency, liquidity, return on assets and bank size) were estimated using the Feasible Generalised Least Squares (FGLS) model. The study documents that competition positively contributed to stability and regulation negatively influenced the stability of the Zimbabwean banks. Meanwhile, bank size and credit risk have a negative relationship with stability; management efficiency and liquidity have a positive relationship. Return On Assets has a negative and positive relationship with stability in model 1 and model 2, respectively. The findings implied that to enhance stability, banks must experience a competitive environment, reasonably low minimum capital requirements and cautiously designed regulatory frameworks. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2023
- Full Text:
- Date Issued: 2023-03-31
Expression, partial characterisation and utilization of a GH11 xylanase (Xyn2A) from Trichoderma viride as an additive in monogastric animal feeds
- Mzimkulu-Ncoyi, Nosabatha Happyness
- Authors: Mzimkulu-Ncoyi, Nosabatha Happyness
- Date: 2023-03-29
- Subjects: Feed additives , Xylanases , Trichoderma viride , Monogastric , Polysaccharides , Plant cell walls , Prebiotics
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/422409 , vital:71940
- Description: Endo-xylanases (shortly called xylanases) are a group of glycoside hydrolase enzymes that target β-D-1,4-linkages in the xylan backbone, leading to the production of xylooligosaccharides (XOS) of varying degree of polymerization (DP). Xylan is an indigestible non-starch polysaccharide present in monogastric animal feeds which in high amounts leads to increased digesta viscosity, slow movement of digesta in the intestines, malabsorption of nutrients among other challenges. The aim of this study was to investigate the effect of xylanase 2A (Xyn2A) from Trichoderma viride on broiler chicken feeds, particularly the hydrolysis of the xylan content, reduction of feed viscosity and the effect of produced XOS on eliciting the growth of gut associated probiotic bacteria. Xyn2AE was successfully induced with 0.8 mM isopropyl β-D-1-thiogalactopyranoside (IPTG) and produced in Escherichia coli BL21 (DE3) and Xyn2AC was expressed in tobacco mosaic plants. For the purification of Xyn2AE, an immobilized metal affinity chromatography (IMAC) column and diafiltration using a 3kDa cut-off Amicon filter membranes were used. Xyn2AE and Xyn2AC showed a xylanase active band at a relative weight of 21 kDa. Both enzymes showed high specificity towards soluble wheat arabinoxylan (WAX), with specific activities of 7.61 U/mg for Xyn2AE and 536.5 U/mg for Xyn2AC. Xyn2A kinetic parameters (Vmax and Km) were determined by Michaelis-Menten plots on soluble and insoluble WAX. The Vmax and Km values of Xyn2AC were 1003.01 U/mg and 9.25 mg/mL, 302.89 U/mg and 13.54 mg/mL, respectively. The Vmax and Km values of Xyn2AE for soluble and insoluble WAX were 20.45 U/mg and 12.95 mg/mL, and 8.31 U/mg and 13.15 mg/mL. Xyn2A enzymes displayed optimum activity at pH and temperature parameters of 5.0 and 50°C, respectively, and stability in temperatures ranging between 50 and 80°C and pH 4.0-9.0. Broiler chicken feeds were hydrolysed using Xyn2AE over a 24 h period and analysed using the dinitrosalicylic (DNS) assay, thin layer chromatography (TLC), viscometry and visualized using scanning electron microscope (SEM). The results showed a release of release of XOS xylotriose, xylopentose and xylohexose; enzyme’s ability to decrease the viscosity of the feeds and punched holes of feed surface, which was indicative of xylanase action. XOS produced during hydrolysis was used to study prebiotic effect on selected few bacteria and released short chain fatty acids (SCFAs) were measured. Additionally, SCFAs formation was detected in the presence of XOS as a carbon source for S. thermophilus and L. bulgaricus, whereas B. subtilis formed fewer organic acids in the presence of XOS. The results obtained from this study demonstrated that the supplementation of Xyn2A on broiler feeds has ii a positive effect in decreasing feed viscosity. Furthermore, the results of this investigation will assist the South African poultry farming sector to increase profitability in poultry farming and gain stability in the global trade as far as poultry feed is concerned. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2023
- Full Text:
- Date Issued: 2023-03-29
- Authors: Mzimkulu-Ncoyi, Nosabatha Happyness
- Date: 2023-03-29
- Subjects: Feed additives , Xylanases , Trichoderma viride , Monogastric , Polysaccharides , Plant cell walls , Prebiotics
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/422409 , vital:71940
- Description: Endo-xylanases (shortly called xylanases) are a group of glycoside hydrolase enzymes that target β-D-1,4-linkages in the xylan backbone, leading to the production of xylooligosaccharides (XOS) of varying degree of polymerization (DP). Xylan is an indigestible non-starch polysaccharide present in monogastric animal feeds which in high amounts leads to increased digesta viscosity, slow movement of digesta in the intestines, malabsorption of nutrients among other challenges. The aim of this study was to investigate the effect of xylanase 2A (Xyn2A) from Trichoderma viride on broiler chicken feeds, particularly the hydrolysis of the xylan content, reduction of feed viscosity and the effect of produced XOS on eliciting the growth of gut associated probiotic bacteria. Xyn2AE was successfully induced with 0.8 mM isopropyl β-D-1-thiogalactopyranoside (IPTG) and produced in Escherichia coli BL21 (DE3) and Xyn2AC was expressed in tobacco mosaic plants. For the purification of Xyn2AE, an immobilized metal affinity chromatography (IMAC) column and diafiltration using a 3kDa cut-off Amicon filter membranes were used. Xyn2AE and Xyn2AC showed a xylanase active band at a relative weight of 21 kDa. Both enzymes showed high specificity towards soluble wheat arabinoxylan (WAX), with specific activities of 7.61 U/mg for Xyn2AE and 536.5 U/mg for Xyn2AC. Xyn2A kinetic parameters (Vmax and Km) were determined by Michaelis-Menten plots on soluble and insoluble WAX. The Vmax and Km values of Xyn2AC were 1003.01 U/mg and 9.25 mg/mL, 302.89 U/mg and 13.54 mg/mL, respectively. The Vmax and Km values of Xyn2AE for soluble and insoluble WAX were 20.45 U/mg and 12.95 mg/mL, and 8.31 U/mg and 13.15 mg/mL. Xyn2A enzymes displayed optimum activity at pH and temperature parameters of 5.0 and 50°C, respectively, and stability in temperatures ranging between 50 and 80°C and pH 4.0-9.0. Broiler chicken feeds were hydrolysed using Xyn2AE over a 24 h period and analysed using the dinitrosalicylic (DNS) assay, thin layer chromatography (TLC), viscometry and visualized using scanning electron microscope (SEM). The results showed a release of release of XOS xylotriose, xylopentose and xylohexose; enzyme’s ability to decrease the viscosity of the feeds and punched holes of feed surface, which was indicative of xylanase action. XOS produced during hydrolysis was used to study prebiotic effect on selected few bacteria and released short chain fatty acids (SCFAs) were measured. Additionally, SCFAs formation was detected in the presence of XOS as a carbon source for S. thermophilus and L. bulgaricus, whereas B. subtilis formed fewer organic acids in the presence of XOS. The results obtained from this study demonstrated that the supplementation of Xyn2A on broiler feeds has ii a positive effect in decreasing feed viscosity. Furthermore, the results of this investigation will assist the South African poultry farming sector to increase profitability in poultry farming and gain stability in the global trade as far as poultry feed is concerned. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2023
- Full Text:
- Date Issued: 2023-03-29
A psycholinguistic investigation of orthographic neighbourhood effects in reading and spelling in isiXhosa
- Authors: Cox, Paige Samantha
- Date: 2022-10-14
- Subjects: Literacy , Xhosa language Orthography and spelling , Psycholinguistics , Word recognition , Reading , Orthographic neighbourhood effects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/404916 , vital:70121
- Description: Despite increased research interest in recent years in the metalinguistic skills underpinning reading in the Southern Bantu languages, little work has been done on the underlying microlinguistic layer. This refers to the actual mechanical underpinnings of linguistic skills; zooming in on micro-language structures so as to explicate our understanding of how reading works. One such microlinguistic phenomenon is the effect of orthographic neighbours on reading and writing. Research has found predominantly faciliatory neighbourhood effects for English word reading (Andrews, 1997; Siakaluk, Sears & Lupker, 2002; Yarkoni, Balota & Yap, 2008). Specifically, words with more orthographic neighbours have faster response times in lexical decision and naming tasks. However, in languages such as Spanish and French, inhibitory neighbourhood effects are reported (Grainger & Jacobs, 1996; Carreiras, Perea & Grainger, 1997). These findings highlight the language-specific nature of orthographic neighbourhood effects (Andrews, 1997), and the necessity for language- specific investigations of these effects. This thesis investigates the linguistic properties of orthographic neighbours in isiXhosa, thereby developing a database of orthographic neighbourhoods in isiXhosa. Further, this research explores the interaction between orthographic neighbourhood density and neighbourhood frequency with three literacy skills: lexical decision response time, word reading accuracy, and spelling accuracy. Data were collected from 97 isiXhosa grade three learners from five schools in KwaNobuhle Township in the Eastern Cape. A corpus of 170 000 tokens of isiXhosa words (Rees & Randera, 2017) was used to compile a database of orthographic neighbourhoods for 30 real, and 30 pseudowords which ranged in orthographic neighbourhood density and neighbourhood frequency, whilst controlling for word length and word frequency. Using this database, lexical decision, word reading, and spelling tasks were designed and administered to the participants. Findings indicate a significant inhibitory effect of orthographic neighbourhood frequency on spelling accuracy. Words with high neighbourhood frequencies are more likely to be spelt incorrectly. There was no observed effect of orthographic neighbourhoods on lexical decision response time and word reading accuracy. These results are interpreted within connectionist and search models of orthographic processing. Specifically, the findings indicate a partial reliance on lexical processing strategies when spelling. That is, orthographic neighbours compete for lexical access when spelling. Education practitioners may wish to present learners with lists of orthographic neighbours when introducing novel words so as to make explicit the fine grain differences between words in the language. This also means that future research will need to develop a larger repository of orthographic neighbours in isiXhosa that can be made available for pedagogical purposes. , Thesis (MA) -- Faculty of Humanities, Linguistics and Applied Language Studies, 2023
- Full Text:
- Date Issued: 2022-10-14
- Authors: Cox, Paige Samantha
- Date: 2022-10-14
- Subjects: Literacy , Xhosa language Orthography and spelling , Psycholinguistics , Word recognition , Reading , Orthographic neighbourhood effects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/404916 , vital:70121
- Description: Despite increased research interest in recent years in the metalinguistic skills underpinning reading in the Southern Bantu languages, little work has been done on the underlying microlinguistic layer. This refers to the actual mechanical underpinnings of linguistic skills; zooming in on micro-language structures so as to explicate our understanding of how reading works. One such microlinguistic phenomenon is the effect of orthographic neighbours on reading and writing. Research has found predominantly faciliatory neighbourhood effects for English word reading (Andrews, 1997; Siakaluk, Sears & Lupker, 2002; Yarkoni, Balota & Yap, 2008). Specifically, words with more orthographic neighbours have faster response times in lexical decision and naming tasks. However, in languages such as Spanish and French, inhibitory neighbourhood effects are reported (Grainger & Jacobs, 1996; Carreiras, Perea & Grainger, 1997). These findings highlight the language-specific nature of orthographic neighbourhood effects (Andrews, 1997), and the necessity for language- specific investigations of these effects. This thesis investigates the linguistic properties of orthographic neighbours in isiXhosa, thereby developing a database of orthographic neighbourhoods in isiXhosa. Further, this research explores the interaction between orthographic neighbourhood density and neighbourhood frequency with three literacy skills: lexical decision response time, word reading accuracy, and spelling accuracy. Data were collected from 97 isiXhosa grade three learners from five schools in KwaNobuhle Township in the Eastern Cape. A corpus of 170 000 tokens of isiXhosa words (Rees & Randera, 2017) was used to compile a database of orthographic neighbourhoods for 30 real, and 30 pseudowords which ranged in orthographic neighbourhood density and neighbourhood frequency, whilst controlling for word length and word frequency. Using this database, lexical decision, word reading, and spelling tasks were designed and administered to the participants. Findings indicate a significant inhibitory effect of orthographic neighbourhood frequency on spelling accuracy. Words with high neighbourhood frequencies are more likely to be spelt incorrectly. There was no observed effect of orthographic neighbourhoods on lexical decision response time and word reading accuracy. These results are interpreted within connectionist and search models of orthographic processing. Specifically, the findings indicate a partial reliance on lexical processing strategies when spelling. That is, orthographic neighbours compete for lexical access when spelling. Education practitioners may wish to present learners with lists of orthographic neighbours when introducing novel words so as to make explicit the fine grain differences between words in the language. This also means that future research will need to develop a larger repository of orthographic neighbours in isiXhosa that can be made available for pedagogical purposes. , Thesis (MA) -- Faculty of Humanities, Linguistics and Applied Language Studies, 2023
- Full Text:
- Date Issued: 2022-10-14
An appraisal analysis of a selection of Zapiro’s political cartoons
- Authors: Hussey, Thomas Davey
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406725 , vital:70302
- Description: Thesis embargoed. To be released in 2025. , Thesis (MA) -- Faculty of Humanities, Linguistics and Applied Language Studies, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Hussey, Thomas Davey
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406725 , vital:70302
- Description: Thesis embargoed. To be released in 2025. , Thesis (MA) -- Faculty of Humanities, Linguistics and Applied Language Studies, 2022
- Full Text:
- Date Issued: 2022-10-14
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
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
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
Contextualising job satisfaction amongst lowest paid support staff in a Higher Education institution
- Madito, Gotlannamang Moloiesi Boipelo
- Authors: Madito, Gotlannamang Moloiesi Boipelo
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405984 , vital:70225
- Description: Thesis embargoed. To be relased in 2024. , Thesis (MA) -- Faculty of Humanities, Psychology, 2022
- Full Text:
- Date Issued: 2022-10-14
Contextualising job satisfaction amongst lowest paid support staff in a Higher Education institution
- Authors: Madito, Gotlannamang Moloiesi Boipelo
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405984 , vital:70225
- Description: Thesis embargoed. To be relased in 2024. , Thesis (MA) -- Faculty of Humanities, Psychology, 2022
- Full Text:
- Date Issued: 2022-10-14
Elele nje usathetha: Ukukhapha as an expression of amaXhosa language world-sense
- Authors: Dana, Zikho
- Date: 2022-10-14
- Subjects: Xhosa language Discourse analysis , Guides (Spiritualism) , Grief Religious aspects , Historical linguistics , Xhosa language Religious aspects , Xhosa (African people) Death , Death Religious aspects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406309 , vital:70257
- Description: This study examines ukukhapha as an expression of amaXhosa language world-sense. Firstly, it examines how ukukhapha as a rite of passage to accompany the spirit of the deceased from the physical realm into the spiritual realm maintains the nexus between the living and the dead. Secondly, it explores ukukhapha as a ritual of collective mourning. Both dimensions of the study are pursued using language as a point of departure. This study draws on four key texts written across different times in history, namely: Intlalo kaXhosa (The Social Life of amaXhosa) by Tiyo Burnside (TB) Soga (1974); the three volume Greater Dictionary of isiXhosa (1989, 2003 and 2006); Nokuzola Mndende’s (2002) PhD thesis entitled: Signifying practices: AmaXhosa ritual speech; and Khaya Dlanga’s (2015) memoire: To Quote Myself. This thesis examines ukukhapha in the context of death to establish how amaXhosa speak about death and how this shapes their understanding and its practice. Discourse analysis is employed to clarify some practices and examples of ukukhapha. It’s also used to trace the evolution of ukukhapha over time in isiXhosa. It is utilized as a reservoir of knowledge epitomizing the world-sense of amaXhosa rather than solely as a means of communication. This study reveals that while ukukhapha as a ritual slaughtering of an ox to accompany the deceased is found in literature, its examination as a practice of communal and collective grief is scanty. The four key texts studied in this thesis reveal that ukukhapha goes beyond a mere ritual slaughtering of a sacrificial beast to accompany the spirit of the deceased to the ancestral realm. It is a practice that has allowed amaXhosa to collectively grief. Furthermore, it has provided the bereaved various forms of support which are pivotal in maintaining and strengthening kinship and communal ties among the living. This study further reveals that for the Africans in general, and for amaXhosa in particular, death is not the end of life. It is a continuation of life where the deceased morphs and graduates to an ancestor who joins a larger community of ancestors who act as intermediaries between the living and uMdali, the Creator. The findings demonstrate that through ukukhapha, there is no bifurcation between gender and age, rather they complement each other as the successful execution of the mourning period and farewell of a loved one is dependent on the roles played by both women and men respectively. , Olu phando luceba ukuphonononga ukukhapha njengendlela yokuphila equlathwe kulwimi lwamaXhosa. Okokuqala, luzakuphanda indlela ukukhapha njengesiko lokukhapha umphefumlo womfi ukusukela kwelenyama ukuya kwelemimoya kugcina ngayo ubudlelwane phakathi kwabaphilayo nabaleli ukuthula. Okwesibini, luzakuphanda ukukhapha njengesiko lokuzila ndawoni nye. Zombini ezi nkalo zizakuvelelwa ngokugxila kulwimi. Olu phando lucaphula kwimibhalo emine engundoqo kumaxesha ohlukileyo kwimbali, iquka: Intlalo kaXhosa owabhalwa nguTiyo Burnside Soga (ngowe1974); isichazi-magama esinemiqulu emithathu iThe Greater Dictionary of isiXhosa (ngowama-1989, owama-2003 nowama-2006); ithisisi yePhD kaNokuzola Mndende (ngowama-2002) ebizwa Signifying practices: amaXhosa ritual speech; nencwadi engunomalisa wobom, ebhalwe nguKhaya Dlanga (ngowama-2015) ebizwa To Quote Myself. Le thisisi isebenzisa ukukhapha kwilixa lokufa ukuphanda indlela amaXhosa athetha ngkufa, nokuba le ndlela yokuthetha iyichaphazela njani indlela abakuqonda ngayo ukufa nendlela abakhaphana ngayo. IDiscourse Analysis isetyenziswa njengesixhobo sokucacisa ukukhapha. Iphinde isetyenziswe ukunika imizekelo yeli siko nendlela yokuphila kwakunye nendlela ukukhapha kutshintshe ngayo ekuhambeni kwexesha kulwimi lwesiXhosa njengokuba sizakusetyenziswa njengovimba wolwazi, endaweni yokusetyenziswa njengesixhobo sonxibelelwano kuphela. Olu phando lubonisa ukuba njengokuba ukukhapha njengesiko lokuphalaza igazi lenkomo ukukhapha umfi kubhaliwe ngako kuncwadi, indlela abaphilayo enyameni abakhaphana ngayo iyasilela kuncwadi. Le mibhalo mine echongiweyo nephononongiweyo kolu phando ivelisa ukuba ukukhapha akuphelelanga ekuphalazeni igazi lenkomo kuphela njengesiko lokukhapha umfi ukuze awelele kweleminyanya, yindlela eyavumela amaXhosa ukuba azile ngemanyano apho uluntu luxhasa abafelweyo ngeendlela ezahlukeneyo ezithi zomeleze imanyano phakathi kwabazalanayo noluntu lwabaphilayo. Olu phando lutyhila into yokuba kumaAfrika jikelele, ingakumbi amaXhosa, ukufa ayikuko ukuphela kobom, nto nje luhambo olugqithisa umfi kubom obulandelayo apho ongeza kwinani kwelezinyanya apho izinyanya zilikhonco phakathi koMdali nabaphilayo. Iziphumo ngokukhapha zibonisa ukuba akukho ukuchasana phakathi kwesini neminyaka, nto nje, le miba mibini iyathungelana ekuncediseni nasekuqinisekiseni ukuba abafazi namadoda benza iindima zabo ngokufanelekileyo ekuqinisekiseni ukuba ixesha lezila nokubeka umfi kwikhaya lakhe lokugqibela ziyimpumelelo. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Dana, Zikho
- Date: 2022-10-14
- Subjects: Xhosa language Discourse analysis , Guides (Spiritualism) , Grief Religious aspects , Historical linguistics , Xhosa language Religious aspects , Xhosa (African people) Death , Death Religious aspects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406309 , vital:70257
- Description: This study examines ukukhapha as an expression of amaXhosa language world-sense. Firstly, it examines how ukukhapha as a rite of passage to accompany the spirit of the deceased from the physical realm into the spiritual realm maintains the nexus between the living and the dead. Secondly, it explores ukukhapha as a ritual of collective mourning. Both dimensions of the study are pursued using language as a point of departure. This study draws on four key texts written across different times in history, namely: Intlalo kaXhosa (The Social Life of amaXhosa) by Tiyo Burnside (TB) Soga (1974); the three volume Greater Dictionary of isiXhosa (1989, 2003 and 2006); Nokuzola Mndende’s (2002) PhD thesis entitled: Signifying practices: AmaXhosa ritual speech; and Khaya Dlanga’s (2015) memoire: To Quote Myself. This thesis examines ukukhapha in the context of death to establish how amaXhosa speak about death and how this shapes their understanding and its practice. Discourse analysis is employed to clarify some practices and examples of ukukhapha. It’s also used to trace the evolution of ukukhapha over time in isiXhosa. It is utilized as a reservoir of knowledge epitomizing the world-sense of amaXhosa rather than solely as a means of communication. This study reveals that while ukukhapha as a ritual slaughtering of an ox to accompany the deceased is found in literature, its examination as a practice of communal and collective grief is scanty. The four key texts studied in this thesis reveal that ukukhapha goes beyond a mere ritual slaughtering of a sacrificial beast to accompany the spirit of the deceased to the ancestral realm. It is a practice that has allowed amaXhosa to collectively grief. Furthermore, it has provided the bereaved various forms of support which are pivotal in maintaining and strengthening kinship and communal ties among the living. This study further reveals that for the Africans in general, and for amaXhosa in particular, death is not the end of life. It is a continuation of life where the deceased morphs and graduates to an ancestor who joins a larger community of ancestors who act as intermediaries between the living and uMdali, the Creator. The findings demonstrate that through ukukhapha, there is no bifurcation between gender and age, rather they complement each other as the successful execution of the mourning period and farewell of a loved one is dependent on the roles played by both women and men respectively. , Olu phando luceba ukuphonononga ukukhapha njengendlela yokuphila equlathwe kulwimi lwamaXhosa. Okokuqala, luzakuphanda indlela ukukhapha njengesiko lokukhapha umphefumlo womfi ukusukela kwelenyama ukuya kwelemimoya kugcina ngayo ubudlelwane phakathi kwabaphilayo nabaleli ukuthula. Okwesibini, luzakuphanda ukukhapha njengesiko lokuzila ndawoni nye. Zombini ezi nkalo zizakuvelelwa ngokugxila kulwimi. Olu phando lucaphula kwimibhalo emine engundoqo kumaxesha ohlukileyo kwimbali, iquka: Intlalo kaXhosa owabhalwa nguTiyo Burnside Soga (ngowe1974); isichazi-magama esinemiqulu emithathu iThe Greater Dictionary of isiXhosa (ngowama-1989, owama-2003 nowama-2006); ithisisi yePhD kaNokuzola Mndende (ngowama-2002) ebizwa Signifying practices: amaXhosa ritual speech; nencwadi engunomalisa wobom, ebhalwe nguKhaya Dlanga (ngowama-2015) ebizwa To Quote Myself. Le thisisi isebenzisa ukukhapha kwilixa lokufa ukuphanda indlela amaXhosa athetha ngkufa, nokuba le ndlela yokuthetha iyichaphazela njani indlela abakuqonda ngayo ukufa nendlela abakhaphana ngayo. IDiscourse Analysis isetyenziswa njengesixhobo sokucacisa ukukhapha. Iphinde isetyenziswe ukunika imizekelo yeli siko nendlela yokuphila kwakunye nendlela ukukhapha kutshintshe ngayo ekuhambeni kwexesha kulwimi lwesiXhosa njengokuba sizakusetyenziswa njengovimba wolwazi, endaweni yokusetyenziswa njengesixhobo sonxibelelwano kuphela. Olu phando lubonisa ukuba njengokuba ukukhapha njengesiko lokuphalaza igazi lenkomo ukukhapha umfi kubhaliwe ngako kuncwadi, indlela abaphilayo enyameni abakhaphana ngayo iyasilela kuncwadi. Le mibhalo mine echongiweyo nephononongiweyo kolu phando ivelisa ukuba ukukhapha akuphelelanga ekuphalazeni igazi lenkomo kuphela njengesiko lokukhapha umfi ukuze awelele kweleminyanya, yindlela eyavumela amaXhosa ukuba azile ngemanyano apho uluntu luxhasa abafelweyo ngeendlela ezahlukeneyo ezithi zomeleze imanyano phakathi kwabazalanayo noluntu lwabaphilayo. Olu phando lutyhila into yokuba kumaAfrika jikelele, ingakumbi amaXhosa, ukufa ayikuko ukuphela kobom, nto nje luhambo olugqithisa umfi kubom obulandelayo apho ongeza kwinani kwelezinyanya apho izinyanya zilikhonco phakathi koMdali nabaphilayo. Iziphumo ngokukhapha zibonisa ukuba akukho ukuchasana phakathi kwesini neminyaka, nto nje, le miba mibini iyathungelana ekuncediseni nasekuqinisekiseni ukuba abafazi namadoda benza iindima zabo ngokufanelekileyo ekuqinisekiseni ukuba ixesha lezila nokubeka umfi kwikhaya lakhe lokugqibela ziyimpumelelo. , Thesis (MA) -- Faculty of Humanities, School of Languages and Literatures, 2022
- Full Text:
- Date Issued: 2022-10-14
Evaluating the trophic ecology and feeding habits of three divergent lineages of Sandelia bainsii (Teleostei: Anabantidae), from the Eastern Cape Rivers using stable isotope analysis
- Authors: Nkomo, Thulisile
- Date: 2022-10-14
- Subjects: Anabantidae , Trophic ecology , Food chains (Ecology) , Food web , Freshwater fishes Food , Stable isotopes
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/364984 , vital:65667
- Description: Despite supporting a disproportionately large fraction of the global biodiversity, freshwater ecosystems are ranked as the most highly threatened habitats on the planet, ahead of both terrestrial and marine ecosystems. Many regions are still characterised by limited knowledge regarding the taxonomy and ecology of freshwater fish taxa. The need for ecological information is increasingly becoming important due to the discovery of new species and unique lineages, which require conservation management. The aim of this study was thus to evaluate the trophic ecology and feeding habits of the three recently described and divergent Sandelia bainsii lineages, namely Sandelia sp. ‘bainsii Kowie’ from the Great Fish River, Sandelia sp. ‘bainsii Keiskamma’ found in the Keiskamma River, and Sandelia sp. ‘bainsii Buffalo’ confined to the Buffalo River system in the Amathole-Winterberg freshwater ecoregion in the Eastern Cape Province, South Africa. Based on the allopatric distribution and the generalist feeding habits of these lineages, this thesis postulated that these three lineages were likely to show similar trophic ecology patterns, different dietary composition and as a result would have variable trophic positioning in the different river systems. Therefore, the primary objectives were to use stable isotope analysis to (1) evaluate the food web patterns of the river systems where the three S. bainsii lineages occurred, and (2) determine dietary source contributions for the three lineages using isotope mixing models. The results revealed general variability and significant differences in the δ13C and δ¹⁵N values for the different basal resources, macroinvertebrates and fish community across the different headwater streams. Within and across the different rivers, the S. bainsii lineages exhibited variable isotopic niche sizes, which appeared to coincide with the variation in the isotopic composition of the individual communities. Furthermore, these lineages did not exhibit any discernible patterns in their interspecific interactions in different habitats. This suggests that these lineages’ isotopic niche patterns were largely influenced by spatial differences in both trophic resources and probable interactions with contraspecifics. Assessment of trophic positions of S. bainsii lineages showed that the three lineages had higher trophic positions than other co-occurring species at most sites, except in the Buffalo River. This suggest that the different lineages were generally top predators in the different river systems. Although S. ‘bainsii Buffalo’ had a lower trophic position compared to other co-occurring species, its trophic position was generally characterised by high uncertainty, indicating that this lineage was likely influenced by the occurrence of diet sources that had highly variable stable isotope values. Findings from stable isotope mixing models revealed that the diet sources varied from the dominance of either single diet source in the Fairburn and Tyume 1 River to the importance of multiple prey sources from the Lushington and Kat River system. This suggests that despite being a top predator at most sites, the diet sources for the different lineages were highly variable. The patterns observed in this study did not appear to be attributed to species divergence possibly caused by allopatric speciation, but rather differences in food web characteristics of the river systems, as well as the lineages interspecific relationships and their generalized feeding strategies. Understanding the trophic dynamics of these lineages will assist in implementing effective conservation strategies and policies dealing with narrowly distributed species that are threatened by habitat fragmentation and invasion of piscivorous fish. , Thesis (MSc) -- Faculty of Science, Ichthyology and Fisheries Science, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Nkomo, Thulisile
- Date: 2022-10-14
- Subjects: Anabantidae , Trophic ecology , Food chains (Ecology) , Food web , Freshwater fishes Food , Stable isotopes
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/364984 , vital:65667
- Description: Despite supporting a disproportionately large fraction of the global biodiversity, freshwater ecosystems are ranked as the most highly threatened habitats on the planet, ahead of both terrestrial and marine ecosystems. Many regions are still characterised by limited knowledge regarding the taxonomy and ecology of freshwater fish taxa. The need for ecological information is increasingly becoming important due to the discovery of new species and unique lineages, which require conservation management. The aim of this study was thus to evaluate the trophic ecology and feeding habits of the three recently described and divergent Sandelia bainsii lineages, namely Sandelia sp. ‘bainsii Kowie’ from the Great Fish River, Sandelia sp. ‘bainsii Keiskamma’ found in the Keiskamma River, and Sandelia sp. ‘bainsii Buffalo’ confined to the Buffalo River system in the Amathole-Winterberg freshwater ecoregion in the Eastern Cape Province, South Africa. Based on the allopatric distribution and the generalist feeding habits of these lineages, this thesis postulated that these three lineages were likely to show similar trophic ecology patterns, different dietary composition and as a result would have variable trophic positioning in the different river systems. Therefore, the primary objectives were to use stable isotope analysis to (1) evaluate the food web patterns of the river systems where the three S. bainsii lineages occurred, and (2) determine dietary source contributions for the three lineages using isotope mixing models. The results revealed general variability and significant differences in the δ13C and δ¹⁵N values for the different basal resources, macroinvertebrates and fish community across the different headwater streams. Within and across the different rivers, the S. bainsii lineages exhibited variable isotopic niche sizes, which appeared to coincide with the variation in the isotopic composition of the individual communities. Furthermore, these lineages did not exhibit any discernible patterns in their interspecific interactions in different habitats. This suggests that these lineages’ isotopic niche patterns were largely influenced by spatial differences in both trophic resources and probable interactions with contraspecifics. Assessment of trophic positions of S. bainsii lineages showed that the three lineages had higher trophic positions than other co-occurring species at most sites, except in the Buffalo River. This suggest that the different lineages were generally top predators in the different river systems. Although S. ‘bainsii Buffalo’ had a lower trophic position compared to other co-occurring species, its trophic position was generally characterised by high uncertainty, indicating that this lineage was likely influenced by the occurrence of diet sources that had highly variable stable isotope values. Findings from stable isotope mixing models revealed that the diet sources varied from the dominance of either single diet source in the Fairburn and Tyume 1 River to the importance of multiple prey sources from the Lushington and Kat River system. This suggests that despite being a top predator at most sites, the diet sources for the different lineages were highly variable. The patterns observed in this study did not appear to be attributed to species divergence possibly caused by allopatric speciation, but rather differences in food web characteristics of the river systems, as well as the lineages interspecific relationships and their generalized feeding strategies. Understanding the trophic dynamics of these lineages will assist in implementing effective conservation strategies and policies dealing with narrowly distributed species that are threatened by habitat fragmentation and invasion of piscivorous fish. , Thesis (MSc) -- Faculty of Science, Ichthyology and Fisheries Science, 2022
- Full Text:
- Date Issued: 2022-10-14
Exploring extensive reading in cultivating positive attitudes and reading comprehension with Grade 8 Learners: a case study in a selected Namibian secondary school
- Authors: Engelbrecht, Sylviana
- Date: 2022-10-14
- Subjects: Reading comprehension Namibia , High school students Books and reading Namibia , High school students Attitudes , Fluency (Language learning) Namibia , Motivation in education Namibia , Affective education Namibia , Second language acquisition
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/403092 , vital:69921
- Description: Extensive reading, otherwise known as “reading for pleasure”, “recreational reading” or “voluntary reading”, appears to be absent in the Namibian society, especially within public educational institutions. With the reformed Education System, the Namibian Curriculum for Basic Education makes room for a reading period in a 7-day cycle, from grade 1 to 11, in which all learners are expected to engage in a sustained silent reading (SSR) of interesting material of their choice. Nevertheless, such a period seems to be insufficient for engaging learners in an enjoyable reading experience, which could possibly create a positive attitude towards reading as well as enhance their reading skills of comprehension and reading fluency, possibly resulting in a habit of individual SSR. This research intended to explore an out-of-school, extensive reading program, over the period of one year, in the hope of cultivating Grade 8 learners’ positive attitude toward reading, in a selected secondary school in the township of Katutura, Windhoek, Khomas Region, Namibia. This one-year study, in which eight Grade 8 learners participated, focused on English only reading, as it is the Language of Learning and Teaching (LoLT). Operating within the interpretivist paradigm, the research adopted a qualitative approach, using a single case study to explore how participants make meaning of their experiences and attitudes toward ER. Qualitative data was collected through pre- and post-questionnaires and document analysis of learners’ reading journals as well as the researcher’s reflective journal. The research site was purposively and conveniently selected. The study drew on Krashen’s, input and affective filter hypotheses as the driving theory of this study, which according to some scholars, is the main second language acquisition theory applied in ER research. Findings of this study suggest that ER programs have a positive impact on learners’ attitudes towards reading as well as on their reading comprehension, even in poorly resourced schools in previously disadvantaged communities. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Engelbrecht, Sylviana
- Date: 2022-10-14
- Subjects: Reading comprehension Namibia , High school students Books and reading Namibia , High school students Attitudes , Fluency (Language learning) Namibia , Motivation in education Namibia , Affective education Namibia , Second language acquisition
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/403092 , vital:69921
- Description: Extensive reading, otherwise known as “reading for pleasure”, “recreational reading” or “voluntary reading”, appears to be absent in the Namibian society, especially within public educational institutions. With the reformed Education System, the Namibian Curriculum for Basic Education makes room for a reading period in a 7-day cycle, from grade 1 to 11, in which all learners are expected to engage in a sustained silent reading (SSR) of interesting material of their choice. Nevertheless, such a period seems to be insufficient for engaging learners in an enjoyable reading experience, which could possibly create a positive attitude towards reading as well as enhance their reading skills of comprehension and reading fluency, possibly resulting in a habit of individual SSR. This research intended to explore an out-of-school, extensive reading program, over the period of one year, in the hope of cultivating Grade 8 learners’ positive attitude toward reading, in a selected secondary school in the township of Katutura, Windhoek, Khomas Region, Namibia. This one-year study, in which eight Grade 8 learners participated, focused on English only reading, as it is the Language of Learning and Teaching (LoLT). Operating within the interpretivist paradigm, the research adopted a qualitative approach, using a single case study to explore how participants make meaning of their experiences and attitudes toward ER. Qualitative data was collected through pre- and post-questionnaires and document analysis of learners’ reading journals as well as the researcher’s reflective journal. The research site was purposively and conveniently selected. The study drew on Krashen’s, input and affective filter hypotheses as the driving theory of this study, which according to some scholars, is the main second language acquisition theory applied in ER research. Findings of this study suggest that ER programs have a positive impact on learners’ attitudes towards reading as well as on their reading comprehension, even in poorly resourced schools in previously disadvantaged communities. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
Exploring integration for the topic of stoichiometry in South African natural sciences and physical sciences school curricula
- Authors: Mgolozeli, Kwanele
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405330 , vital:70162
- Description: Many developing countries, including South Africa, have identified the provision and implementation of strong science curricula as central to their developmental needs. Stoichiometry is a fundamental chemistry topic because the concepts involved form the basis of later topics such as chemical equilibrium, rates of reactions, redox reactions, and acid-base reactions. School students consistently demonstrate lack of understanding of stoichiometry-related concepts and skills such as the particulate nature of matter and related mathematical problem-solving. The poor performance of high school students in central science topics such as stoichiometry is problematic for their further study of chemistry and for the country meeting its need for science graduates. Successive examiner reports pointed to the lack of integration of stoichiometry concepts across the grades being the main problem. However, no study could be found which explores how stoichiometry is integrated in the South African Natural Sciences and Physical Sciences curriculum across the grades. This provided the rationale for the current study. The case study reported in this thesis thus aimed to explore integration of stoichiometry concepts in South African Natural Sciences and Physical Sciences school curricula. It involved document analysis as the method of collecting data. The research adopted the social realist paradigm, with its realist ontology and relativist epistemology. Legitimation Code Theory provided the theoretical framing. Chemistry concepts that are foundational to the understanding of stoichiometry according to literature, were chosen as root concepts for the concept mapping undertaken to identify types of integration. The concept maps revealed four stoichiometry integration themes: integration of stoichiometry concepts with symbols, integration of stoichiometry concepts with explanations, integration with applications in a chemistry context, and integration with an everyday context. These themes provided integration categories. A semantic gravity translation device was then developed for characterising the types of integration in terms of the degree of contextualisation. The results of this study show that stoichiometry integration of weaker semantic gravity is legitimated more strongly over other semantic gravity codes in the Natural Sciences and Physical Sciences curricula across all grade levels. While this has advantages in terms of knowledge-building potential, the consequence is that the integration occurs at very abstract levels that are far removed from learners’ everyday lives. The practical implication for curriculum developers involves increasing the instances of integration of stoichiometry concepts at stronger levels of semantic gravity, for a more even semantic gravity range of integration types. Natural Sciences and Physical Sciences teachers also need to source and include real-life examples for explanations and applications of stoichiometry concepts when teaching, in light of current curriculum documents focusing more on abstract forms of integration. Methodologically, this study contributes to the increased utility of semantic gravity through its exploration of integration in relation to knowledge-building potential of curriculum for hierarchical knowledge structures such as chemistry. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Mgolozeli, Kwanele
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/405330 , vital:70162
- Description: Many developing countries, including South Africa, have identified the provision and implementation of strong science curricula as central to their developmental needs. Stoichiometry is a fundamental chemistry topic because the concepts involved form the basis of later topics such as chemical equilibrium, rates of reactions, redox reactions, and acid-base reactions. School students consistently demonstrate lack of understanding of stoichiometry-related concepts and skills such as the particulate nature of matter and related mathematical problem-solving. The poor performance of high school students in central science topics such as stoichiometry is problematic for their further study of chemistry and for the country meeting its need for science graduates. Successive examiner reports pointed to the lack of integration of stoichiometry concepts across the grades being the main problem. However, no study could be found which explores how stoichiometry is integrated in the South African Natural Sciences and Physical Sciences curriculum across the grades. This provided the rationale for the current study. The case study reported in this thesis thus aimed to explore integration of stoichiometry concepts in South African Natural Sciences and Physical Sciences school curricula. It involved document analysis as the method of collecting data. The research adopted the social realist paradigm, with its realist ontology and relativist epistemology. Legitimation Code Theory provided the theoretical framing. Chemistry concepts that are foundational to the understanding of stoichiometry according to literature, were chosen as root concepts for the concept mapping undertaken to identify types of integration. The concept maps revealed four stoichiometry integration themes: integration of stoichiometry concepts with symbols, integration of stoichiometry concepts with explanations, integration with applications in a chemistry context, and integration with an everyday context. These themes provided integration categories. A semantic gravity translation device was then developed for characterising the types of integration in terms of the degree of contextualisation. The results of this study show that stoichiometry integration of weaker semantic gravity is legitimated more strongly over other semantic gravity codes in the Natural Sciences and Physical Sciences curricula across all grade levels. While this has advantages in terms of knowledge-building potential, the consequence is that the integration occurs at very abstract levels that are far removed from learners’ everyday lives. The practical implication for curriculum developers involves increasing the instances of integration of stoichiometry concepts at stronger levels of semantic gravity, for a more even semantic gravity range of integration types. Natural Sciences and Physical Sciences teachers also need to source and include real-life examples for explanations and applications of stoichiometry concepts when teaching, in light of current curriculum documents focusing more on abstract forms of integration. Methodologically, this study contributes to the increased utility of semantic gravity through its exploration of integration in relation to knowledge-building potential of curriculum for hierarchical knowledge structures such as chemistry. , Thesis (MEd) -- Faculty of Education, Education, 2022
- Full Text:
- Date Issued: 2022-10-14
Exploring Ubuntu as service leadership competency
- Authors: Bangushe, Anele Greatjoy
- Date: 2022-10-14
- Subjects: Leadership Moral and ethical aspects , Ubuntu (Philosophy) , Methodist Church of South Africa , Servant leadership South Africa Makhanda , Christian leadership South Africa Makhanda , Community leadership South Africa Makhanda , Critical incident technique
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/380743 , vital:67488
- Description: This is a case study conducted in the Methodist Church of Southern Africa (MCSA), Grahamstown, in the Eastern Cape. Against the backdrop of identifying and conceptualising ethically oriented leadership competencies, the purpose of this study was to explore service as a leadership competency. The literature reviewed in this research underscored the importance of effective and ethical leadership, but critiqued the Westernised, individualistic orientation of the conceptualisation of service as a leadership competency. Based on a review of the literature, this study proposes that when African leaders are in leadership four components of Ubuntu are involved when they exercise service as a leadership competency. These components are collective consideration, collective compassion, community server and Ubuntu humility. The main aim of this study is to investigate if leaders display these four components when exercising service towards their followers, and if so, how, and why they do so. A conceptual framework of components of Ubuntu, which culminated in research themes and propositions, were produced from the literature chapter. A qualitative research method was adopted in this study in which eight participants were selected through convenience sampling for this case study. One minister and seven Vice-Presidents of various organisations in the Methodist Church were interviewed. Semi-structured interviews were conducted for data collection and a deductive thematic analysis approach was employed to analyse data. Also, the critical incident technique (CIT) was utilised to structure interview questions, which is best fitting to solicit complex and comprehensive data from the interviewees. In its findings, the study confirmed the presence of the four components of Ubuntu, but several delimitations and limitations are acknowledged. Nevertheless, the study has made some contribution to understanding the display of service as a leadership competency in an African context. The implications for management practice are considered and recommendations made for future research. , Thesis (MBA) -- Faculty of Commerce, Rhodes Business School, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Bangushe, Anele Greatjoy
- Date: 2022-10-14
- Subjects: Leadership Moral and ethical aspects , Ubuntu (Philosophy) , Methodist Church of South Africa , Servant leadership South Africa Makhanda , Christian leadership South Africa Makhanda , Community leadership South Africa Makhanda , Critical incident technique
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/380743 , vital:67488
- Description: This is a case study conducted in the Methodist Church of Southern Africa (MCSA), Grahamstown, in the Eastern Cape. Against the backdrop of identifying and conceptualising ethically oriented leadership competencies, the purpose of this study was to explore service as a leadership competency. The literature reviewed in this research underscored the importance of effective and ethical leadership, but critiqued the Westernised, individualistic orientation of the conceptualisation of service as a leadership competency. Based on a review of the literature, this study proposes that when African leaders are in leadership four components of Ubuntu are involved when they exercise service as a leadership competency. These components are collective consideration, collective compassion, community server and Ubuntu humility. The main aim of this study is to investigate if leaders display these four components when exercising service towards their followers, and if so, how, and why they do so. A conceptual framework of components of Ubuntu, which culminated in research themes and propositions, were produced from the literature chapter. A qualitative research method was adopted in this study in which eight participants were selected through convenience sampling for this case study. One minister and seven Vice-Presidents of various organisations in the Methodist Church were interviewed. Semi-structured interviews were conducted for data collection and a deductive thematic analysis approach was employed to analyse data. Also, the critical incident technique (CIT) was utilised to structure interview questions, which is best fitting to solicit complex and comprehensive data from the interviewees. In its findings, the study confirmed the presence of the four components of Ubuntu, but several delimitations and limitations are acknowledged. Nevertheless, the study has made some contribution to understanding the display of service as a leadership competency in an African context. The implications for management practice are considered and recommendations made for future research. , Thesis (MBA) -- Faculty of Commerce, Rhodes Business School, 2022
- Full Text:
- Date Issued: 2022-10-14
Global climate justice: the case of climate migrants
- Van Heerden, Samantha Jane Ashburner
- Authors: Van Heerden, Samantha Jane Ashburner
- Date: 2022-10-14
- Subjects: Climate justice , Environmental refugees , Climatic changes Social aspects , Applied ethics , Political science Philosophy , Refugees , Global justice , Relocation (Housing) Environmental aspects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406749 , vital:70304
- Description: Climate change is predicted to displace thousands of people across the globe. Due to their geographical location and limited resources available for adaptation, this will particularly impact those in developing states, who might have to flee from the growing frequency and severity of rising sea levels, drought and desertification, and acute natural disasters such as floods, wildfires, and hurricanes. This is likely to have pervasive effects on the moral interests of those affected, threatening loss of life, the deterioration of livelihoods, and for small island states even complete or substantial loss of state territory. In this thesis I will argue that we should conceive of this situation as a problem of global justice. Though some argue that questions of justice only arise within the state, I will argue that global economic and political institutions have contributed to the plight of climate migrants, and that following from Darrel Moellendorf’s theory of associational justice, this enduring impact results in an association and duties of justice that transcend state borders. To respect the dignity of climate migrants, such an unjust association needs to be rectified by establishing ethical principles that could be reasonably endorsed by everyone affected. Drawing from Gillian Brock, I will argue that the best way to rectify the situation is through establishing a principle of distributive justice which focuses on ‘agency needs’: needs whose fulfilment is necessary for human agency. Using this framework, I then provide some recommendations of what is owed to climate migrants to achieve justice for them. I also consider how these duties of justice should be distributed, first critiquing a dominant approach that attributes duties primarily to polluters. In the end, I recommend that duties should be dispersed between all those who support the global institutions responsible, those who have been high polluters since 1990, and the most affluent in the world. As the effects of climate change become increasingly pronounced within the next fifty years, establishing what is owed to those displaced is of utmost importance, and I hope this thesis shows how normative philosophy can help us think through these urgent questions. , Thesis (MA) -- Faculty of Humanities, Philosophy, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Van Heerden, Samantha Jane Ashburner
- Date: 2022-10-14
- Subjects: Climate justice , Environmental refugees , Climatic changes Social aspects , Applied ethics , Political science Philosophy , Refugees , Global justice , Relocation (Housing) Environmental aspects
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/406749 , vital:70304
- Description: Climate change is predicted to displace thousands of people across the globe. Due to their geographical location and limited resources available for adaptation, this will particularly impact those in developing states, who might have to flee from the growing frequency and severity of rising sea levels, drought and desertification, and acute natural disasters such as floods, wildfires, and hurricanes. This is likely to have pervasive effects on the moral interests of those affected, threatening loss of life, the deterioration of livelihoods, and for small island states even complete or substantial loss of state territory. In this thesis I will argue that we should conceive of this situation as a problem of global justice. Though some argue that questions of justice only arise within the state, I will argue that global economic and political institutions have contributed to the plight of climate migrants, and that following from Darrel Moellendorf’s theory of associational justice, this enduring impact results in an association and duties of justice that transcend state borders. To respect the dignity of climate migrants, such an unjust association needs to be rectified by establishing ethical principles that could be reasonably endorsed by everyone affected. Drawing from Gillian Brock, I will argue that the best way to rectify the situation is through establishing a principle of distributive justice which focuses on ‘agency needs’: needs whose fulfilment is necessary for human agency. Using this framework, I then provide some recommendations of what is owed to climate migrants to achieve justice for them. I also consider how these duties of justice should be distributed, first critiquing a dominant approach that attributes duties primarily to polluters. In the end, I recommend that duties should be dispersed between all those who support the global institutions responsible, those who have been high polluters since 1990, and the most affluent in the world. As the effects of climate change become increasingly pronounced within the next fifty years, establishing what is owed to those displaced is of utmost importance, and I hope this thesis shows how normative philosophy can help us think through these urgent questions. , Thesis (MA) -- Faculty of Humanities, Philosophy, 2022
- Full Text:
- Date Issued: 2022-10-14
High road or common neoliberal trajectory? Collective bargaining, wage share, and varieties of capitalism
- Mpuku, Mutale Natasha Muchule
- Authors: Mpuku, Mutale Natasha Muchule
- Date: 2022-10-14
- Subjects: Collective bargaining , Globalization , Labor union members , Wages Statistics , Income distribution , Economic development , Neoliberalism , Capitalism
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/357611 , vital:64760
- Description: Wage shares have been falling since the 1980s across developing and developed countries. There has also been a downward trend with labour market institutions in these countries, with a few exceptions. This thesis analyzes these trends using firstly an extended literature review and secondly an econometrics analysis of a panel of 36 countries over 39 years. The extended literature review identified two broad competing narratives surrounding this topic: the mainstream and the alternative growth narratives. They both focus on two different growth regimes, the former, posits that growth is profit-led and the latter that growth is wage-led. Both are not ‘zero sum’ processes and seem to offer the same end result (growth and development). However, profit-led growth seems to have two problems. First, at least in the medium run, there is a trade-off between growth and income distribution. And secondly, profit-led growth is contradictory at the global level. Wage-led growth, which offers a ‘high road’ approach, seems far more appealing. Furthermore, several authors, including in South Africa, have claimed that regime-switching (to wage-led growth), is possible, and it seems that labour market institutions may play an important role in facilitating such a switch. However, the empirical literature, especially regarding middle- and low-income countries, is sparse and inconclusive. The panel data analysis provided by this thesis was not conclusive in establishing whether the wage-led, high road path is still viable for countries like South Africa. However, it did not find strong evidence of the contrary. The thesis concluded that there is scope for further research in this field and makes certain suggestions in this regard. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Mpuku, Mutale Natasha Muchule
- Date: 2022-10-14
- Subjects: Collective bargaining , Globalization , Labor union members , Wages Statistics , Income distribution , Economic development , Neoliberalism , Capitalism
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/357611 , vital:64760
- Description: Wage shares have been falling since the 1980s across developing and developed countries. There has also been a downward trend with labour market institutions in these countries, with a few exceptions. This thesis analyzes these trends using firstly an extended literature review and secondly an econometrics analysis of a panel of 36 countries over 39 years. The extended literature review identified two broad competing narratives surrounding this topic: the mainstream and the alternative growth narratives. They both focus on two different growth regimes, the former, posits that growth is profit-led and the latter that growth is wage-led. Both are not ‘zero sum’ processes and seem to offer the same end result (growth and development). However, profit-led growth seems to have two problems. First, at least in the medium run, there is a trade-off between growth and income distribution. And secondly, profit-led growth is contradictory at the global level. Wage-led growth, which offers a ‘high road’ approach, seems far more appealing. Furthermore, several authors, including in South Africa, have claimed that regime-switching (to wage-led growth), is possible, and it seems that labour market institutions may play an important role in facilitating such a switch. However, the empirical literature, especially regarding middle- and low-income countries, is sparse and inconclusive. The panel data analysis provided by this thesis was not conclusive in establishing whether the wage-led, high road path is still viable for countries like South Africa. However, it did not find strong evidence of the contrary. The thesis concluded that there is scope for further research in this field and makes certain suggestions in this regard. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-10-14
In silico substrate binding profiling for SARS-COV-2 main protease (mpro) using hexapeptide substrates
- Authors: Zabo, Sophakama
- Date: 2022-10-14
- Subjects: COVID-19 (Disease) , Peptides , Chymotrypsin like , Chymotrypsin , Proteases , Proteolytic enzymes
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365566 , vital:65760
- Description: COVID-19, as a disease resulting from SARS-CoV-2 infection, and a pandemic has had a devastating effect on the world. There are limited effective measures that control the spread and treatment of COVID-19 illness. The homodimeric cysteine main protease (Mpro) is crucial to the life cycle of the virus, as it cleaves the large polyproteins 1a and 1ab into matured, functional non-structural proteins. The Mpro exhibits high degrees of conservation in sequence, structure and specificity across coronavirus species, making it an ideal drug target. The Mpro substrate-binding profiles remain, despite the resolution of its recognition sequence and cleavage points (Leu-Gln↓(Ser/Ala/Gly)). In this study, a series of hexapeptide sequences containing the appropriate recognition sequence and cleavage points were generated and screened against the Mpro to study these binding profiles, and to further be the basis for efficiency-driven drug design. A multi-conformer hexapeptide substrate library comprising optimised 81000 models of 810 unique sequences was generated using RDKit within the context of python. Terminal capping with ACE and NMe was effected using SMILES and SMARTS matching. Multiple hexapeptides were complexed with chain B of crystallographic Mpro (PDS ID: 6XHM), following the validation of chain B for this purpose using AutoDock Vina at high levels of exhaustiveness (480). The resulting Vina scores ranged between -8.7 and -7.0 kcal.mol-1, and the reproducibility of best poses was validated through redocking. Ligand efficiency indices were calculated to identify substrate residues with high binding efficiency at their respective positions, revealing Val (P3), Ala (P1′); and Gly and Ala (P2′ and P3′) as leading efficient binders. Binding efficiencies were lowered by molecular weight. Substrate recognition was assessed by mapping of binding subsites, and Mpro specificity was evaluated through the resolution of intermolecular interaction at the binding interface. Molecular dynamics simulations for 20 ns were performed to assess the stability and behaviour of 132 Mpro systems complexed with KLQ*** substrates. Principal component analysis (PCA), was performed to assess II protein motions and conformational changes during the simulations. A strategy was formulated to classify and evaluate relations in the Mpro PCA motions, revealing four main clades of similarity. Similarity within a clade (Group 2) and dissimilarity between clades were confirmed. Trajectory visualisation revealed complex stability, substrate unbinding and dimer dissociation for various Mpro systems. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Zabo, Sophakama
- Date: 2022-10-14
- Subjects: COVID-19 (Disease) , Peptides , Chymotrypsin like , Chymotrypsin , Proteases , Proteolytic enzymes
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365566 , vital:65760
- Description: COVID-19, as a disease resulting from SARS-CoV-2 infection, and a pandemic has had a devastating effect on the world. There are limited effective measures that control the spread and treatment of COVID-19 illness. The homodimeric cysteine main protease (Mpro) is crucial to the life cycle of the virus, as it cleaves the large polyproteins 1a and 1ab into matured, functional non-structural proteins. The Mpro exhibits high degrees of conservation in sequence, structure and specificity across coronavirus species, making it an ideal drug target. The Mpro substrate-binding profiles remain, despite the resolution of its recognition sequence and cleavage points (Leu-Gln↓(Ser/Ala/Gly)). In this study, a series of hexapeptide sequences containing the appropriate recognition sequence and cleavage points were generated and screened against the Mpro to study these binding profiles, and to further be the basis for efficiency-driven drug design. A multi-conformer hexapeptide substrate library comprising optimised 81000 models of 810 unique sequences was generated using RDKit within the context of python. Terminal capping with ACE and NMe was effected using SMILES and SMARTS matching. Multiple hexapeptides were complexed with chain B of crystallographic Mpro (PDS ID: 6XHM), following the validation of chain B for this purpose using AutoDock Vina at high levels of exhaustiveness (480). The resulting Vina scores ranged between -8.7 and -7.0 kcal.mol-1, and the reproducibility of best poses was validated through redocking. Ligand efficiency indices were calculated to identify substrate residues with high binding efficiency at their respective positions, revealing Val (P3), Ala (P1′); and Gly and Ala (P2′ and P3′) as leading efficient binders. Binding efficiencies were lowered by molecular weight. Substrate recognition was assessed by mapping of binding subsites, and Mpro specificity was evaluated through the resolution of intermolecular interaction at the binding interface. Molecular dynamics simulations for 20 ns were performed to assess the stability and behaviour of 132 Mpro systems complexed with KLQ*** substrates. Principal component analysis (PCA), was performed to assess II protein motions and conformational changes during the simulations. A strategy was formulated to classify and evaluate relations in the Mpro PCA motions, revealing four main clades of similarity. Similarity within a clade (Group 2) and dissimilarity between clades were confirmed. Trajectory visualisation revealed complex stability, substrate unbinding and dimer dissociation for various Mpro systems. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
Investigating the roles of HOP isoforms in KSHV biology
- Matandirotya, Lorraine Tariro
- Authors: Matandirotya, Lorraine Tariro
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365257 , vital:65721
- Description: Thesis embargoed. Possible release date set for early 2025. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Matandirotya, Lorraine Tariro
- Date: 2022-10-14
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365257 , vital:65721
- Description: Thesis embargoed. Possible release date set for early 2025. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2022
- Full Text:
- Date Issued: 2022-10-14
Knowledge of and concern about global biodiversity loss vs local biodiversity loss in the Maputaland-Pondoland-Albany Hotspot (MPA)
- Authors: Toyisi, Zanele Jacqueline
- Date: 2022-10-14
- Subjects: Biodiversity Public opinion , Biodiversity conservation South Africa , Maputaland-Pondoland-Albany Hotspot , Biodiversity loss , Local knowledge
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365025 , vital:65671
- Description: Biodiversity forms the basis of the ecosystem services that society depends on. However, humanity has caused an increase in the extinction rates up to 100 times higher than that of evolutionary background levels. Recent studies found that biodiversity conservation becomes successful when it is grounded in local support. Support for conservation of biodiversity depends on peoples’ knowledge of biodiversity, their attitudes and awareness of the number of species that are present and that are threatened with extinction. However, some studies have shown that the public has little knowledge about the concept of biodiversity and have poor biodiversity identification skills. There is growing concern that people know and are more concerned about global biodiversity loss than what is happening around them locally. The notion that people know and are more concerned about global biodiversity loss rather than local, has not been deeply studied. Most studies have been in developed countries, with limited studies in developing countries and countries that have high diversity such as South Africa. Having accurate knowledge about biodiversity and the environment is said to be the key predictor of intention to change behaviour in relation to biodiversity. Therefore, the purpose of this study was to understand the knowledge and concern (if any) people have of biodiversity at global and local scales. More so, it set out to determine how familiar people are with the term biodiversity, what they consider as forces leading to biodiversity decline, the level of concern that they have for biodiversity loss and if knowledge and concern is influenced by demographic profiles. To achieve this aim, a total of 220 random interviews were conducted in three towns within the Maputaland-Pondoland-Albany Hotspot in South Africa. The results show that respondents are familiar with the term biodiversity. There was a strong relationship between having heard of the term and the ability to define it with 55 % of the respondents aware of it and able to define it. Respondents had moderate knowledge general knowledge related to biodiversity. Gender, education and childhood background did play a role in the knowledge of biodiversity. Women had more knowledge about biodiversity than men, highly educated respondents knew more and the youth knew more than older respondents. The results of this study found that there were no respondents who could not name any local species from South Africa. However, things changed at global level with 32 % of the participants unable to name species at global level. Endangered species are still relatively unknown, as the majority of respondents could not name any at district (84 %) or at global level (61 %). Charismatic species were known the most by respondents as 52 % mentioned them at national level and 59 % at global level. This study also assessed if there is concern for biodiversity loss. The results showed that there is concern for biodiversity with 71 % of the respondents in support for conservation and 60 % of the respondents willing to donate towards conservation. This study found that reasons for conservation related to the level of products consumed directly from the environment. Those that supported conservation for use values consumed more products from the environment than those who were in support for non-use values. Furtherly, this study found that women were more concerned about biodiversity loss than men. Highly educated respondents were more concerned and the youth was not. Furtherly, this study found that knowledge about biodiversity loss corelated with concern. For example, women had more knowledge and were more concerned about biodiversity loss. Overall, this study has shown that there is some knowledge and concern that people have about biodiversity and its loss. This can assist the relevant policy makers and researchers to know where intervention is needed to increase the knowledge that people have of biodiversity loss and which aspects of biodiversity people are most concerned about. This is so that new policies and conservation measures can include what is appealing to the local people so that support for conservation can be built and accepted by local people. , Thesis (MSc) -- Faculty of Science, Environmental Science, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Toyisi, Zanele Jacqueline
- Date: 2022-10-14
- Subjects: Biodiversity Public opinion , Biodiversity conservation South Africa , Maputaland-Pondoland-Albany Hotspot , Biodiversity loss , Local knowledge
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/365025 , vital:65671
- Description: Biodiversity forms the basis of the ecosystem services that society depends on. However, humanity has caused an increase in the extinction rates up to 100 times higher than that of evolutionary background levels. Recent studies found that biodiversity conservation becomes successful when it is grounded in local support. Support for conservation of biodiversity depends on peoples’ knowledge of biodiversity, their attitudes and awareness of the number of species that are present and that are threatened with extinction. However, some studies have shown that the public has little knowledge about the concept of biodiversity and have poor biodiversity identification skills. There is growing concern that people know and are more concerned about global biodiversity loss than what is happening around them locally. The notion that people know and are more concerned about global biodiversity loss rather than local, has not been deeply studied. Most studies have been in developed countries, with limited studies in developing countries and countries that have high diversity such as South Africa. Having accurate knowledge about biodiversity and the environment is said to be the key predictor of intention to change behaviour in relation to biodiversity. Therefore, the purpose of this study was to understand the knowledge and concern (if any) people have of biodiversity at global and local scales. More so, it set out to determine how familiar people are with the term biodiversity, what they consider as forces leading to biodiversity decline, the level of concern that they have for biodiversity loss and if knowledge and concern is influenced by demographic profiles. To achieve this aim, a total of 220 random interviews were conducted in three towns within the Maputaland-Pondoland-Albany Hotspot in South Africa. The results show that respondents are familiar with the term biodiversity. There was a strong relationship between having heard of the term and the ability to define it with 55 % of the respondents aware of it and able to define it. Respondents had moderate knowledge general knowledge related to biodiversity. Gender, education and childhood background did play a role in the knowledge of biodiversity. Women had more knowledge about biodiversity than men, highly educated respondents knew more and the youth knew more than older respondents. The results of this study found that there were no respondents who could not name any local species from South Africa. However, things changed at global level with 32 % of the participants unable to name species at global level. Endangered species are still relatively unknown, as the majority of respondents could not name any at district (84 %) or at global level (61 %). Charismatic species were known the most by respondents as 52 % mentioned them at national level and 59 % at global level. This study also assessed if there is concern for biodiversity loss. The results showed that there is concern for biodiversity with 71 % of the respondents in support for conservation and 60 % of the respondents willing to donate towards conservation. This study found that reasons for conservation related to the level of products consumed directly from the environment. Those that supported conservation for use values consumed more products from the environment than those who were in support for non-use values. Furtherly, this study found that women were more concerned about biodiversity loss than men. Highly educated respondents were more concerned and the youth was not. Furtherly, this study found that knowledge about biodiversity loss corelated with concern. For example, women had more knowledge and were more concerned about biodiversity loss. Overall, this study has shown that there is some knowledge and concern that people have about biodiversity and its loss. This can assist the relevant policy makers and researchers to know where intervention is needed to increase the knowledge that people have of biodiversity loss and which aspects of biodiversity people are most concerned about. This is so that new policies and conservation measures can include what is appealing to the local people so that support for conservation can be built and accepted by local people. , Thesis (MSc) -- Faculty of Science, Environmental Science, 2022
- Full Text:
- Date Issued: 2022-10-14
Larval assemblages in intertidal habitats: the use of artificial and natural microhabitats
- Authors: Reddy, Seshnee
- Date: 2022-10-14
- Subjects: Larvae Habitat , Niche (Ecology) , Intertidal ecology South Africa Eastern Cape , Light trap , DNA barcoding , Artificial habitat , Larvae Effect of human beings on South Africa Eastern Cape , Urbanization South Africa Eastern Cape
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/364992 , vital:65668
- Description: Coastal habitats, and more specifically, intertidal habitats, host a unique range of biodiversity and are key areas for many fish and invertebrate species across one or more of their life stages. This is due to the provision of microhabitats which offer an escape from harsh environmental stressors and predation as well as increased food supply, hence increasing chances of survival. Due to the growing human population however, coastal habitats are being replaced by artificial structures (jetties, seawalls, piers, breakwaters) which partially or heavily fragment the natural environment through urbanisation-related expansion processes. These coastal infrastructures also have different physical properties from the natural environment and therefore tend to support different biological assemblages and can potentially alter the existing biodiversity and its functionality. The overall aim of this project was therefore to evaluate the use of artificial and natural intertidal microhabitats by fish and invertebrate larvae along the South African, Eastern Cape coastline. As independent case studies, fieldwork was conducted at an urban (Port Alfred Marina) and rocky shore (Kenton-on-Sea) site. Within each of these study sites, two replicated sheltered subsites were selected, which represented microhabitats. Samples were collected from these replicated microhabitats from September 2019 to February 2020 using light traps which targeted phototactic larval species, as well as a portable pump, for photo-neutral/negative taxa. All samples were preserved onsite in 99% ethanol and specimens were later counted and identified in the laboratory to the lowest possible taxonomic level using a stereomicroscope. Additionally, DNA barcoding was conducted on selected larval taxa for verification of morphological identification as well as contributing to the field of larval taxonomy through development of public database records. The barcoding technique was effective in positively identifying 96% and 58% of fish and invertebrate larvae sampled, respectively (overall identification success of 86%), to either family, genus or species level. Results of microhabitat use indicate higher larval abundances associated with artificial structures as compared to natural structures, with significant differences between the selected microhabitats within the rocky shores and the marina respectively, across months. High numbers of several early stage taxa were observed within the selected microhabitats in the marina, with Pinnotheres sp. (zoea) (Family: Pinnotheridae) being the most abundant invertebrate larval taxon collected at the artificial microhabitats of jetties and vertical walls. Fish larvae of Omobranchus woodi (preflexion) and Etrumeus whiteheadi (postflexion) were the most dominant at the selected artificial microhabitats within the marina. The DNA barcoding tool used in the current study to verify morphological identification proved to be instrumental in the accuracy of the reliable data collection of the early life stages present in these habitats. These results suggest that artificial structures may provide refugia for the vulnerable very early life stages of species and, in turn, play a potential facilitative role in reproductive and population connectivity which could result in replenishment of natural populations. It is therefore possible that these urban habitats could be considered as hubs for maintenance of coastal biodiversity. , Thesis (MSc) -- Faculty of Science, Zoology and Entomology, 2022
- Full Text:
- Date Issued: 2022-10-14
- Authors: Reddy, Seshnee
- Date: 2022-10-14
- Subjects: Larvae Habitat , Niche (Ecology) , Intertidal ecology South Africa Eastern Cape , Light trap , DNA barcoding , Artificial habitat , Larvae Effect of human beings on South Africa Eastern Cape , Urbanization South Africa Eastern Cape
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/364992 , vital:65668
- Description: Coastal habitats, and more specifically, intertidal habitats, host a unique range of biodiversity and are key areas for many fish and invertebrate species across one or more of their life stages. This is due to the provision of microhabitats which offer an escape from harsh environmental stressors and predation as well as increased food supply, hence increasing chances of survival. Due to the growing human population however, coastal habitats are being replaced by artificial structures (jetties, seawalls, piers, breakwaters) which partially or heavily fragment the natural environment through urbanisation-related expansion processes. These coastal infrastructures also have different physical properties from the natural environment and therefore tend to support different biological assemblages and can potentially alter the existing biodiversity and its functionality. The overall aim of this project was therefore to evaluate the use of artificial and natural intertidal microhabitats by fish and invertebrate larvae along the South African, Eastern Cape coastline. As independent case studies, fieldwork was conducted at an urban (Port Alfred Marina) and rocky shore (Kenton-on-Sea) site. Within each of these study sites, two replicated sheltered subsites were selected, which represented microhabitats. Samples were collected from these replicated microhabitats from September 2019 to February 2020 using light traps which targeted phototactic larval species, as well as a portable pump, for photo-neutral/negative taxa. All samples were preserved onsite in 99% ethanol and specimens were later counted and identified in the laboratory to the lowest possible taxonomic level using a stereomicroscope. Additionally, DNA barcoding was conducted on selected larval taxa for verification of morphological identification as well as contributing to the field of larval taxonomy through development of public database records. The barcoding technique was effective in positively identifying 96% and 58% of fish and invertebrate larvae sampled, respectively (overall identification success of 86%), to either family, genus or species level. Results of microhabitat use indicate higher larval abundances associated with artificial structures as compared to natural structures, with significant differences between the selected microhabitats within the rocky shores and the marina respectively, across months. High numbers of several early stage taxa were observed within the selected microhabitats in the marina, with Pinnotheres sp. (zoea) (Family: Pinnotheridae) being the most abundant invertebrate larval taxon collected at the artificial microhabitats of jetties and vertical walls. Fish larvae of Omobranchus woodi (preflexion) and Etrumeus whiteheadi (postflexion) were the most dominant at the selected artificial microhabitats within the marina. The DNA barcoding tool used in the current study to verify morphological identification proved to be instrumental in the accuracy of the reliable data collection of the early life stages present in these habitats. These results suggest that artificial structures may provide refugia for the vulnerable very early life stages of species and, in turn, play a potential facilitative role in reproductive and population connectivity which could result in replenishment of natural populations. It is therefore possible that these urban habitats could be considered as hubs for maintenance of coastal biodiversity. , Thesis (MSc) -- Faculty of Science, Zoology and Entomology, 2022
- Full Text:
- Date Issued: 2022-10-14