A design of a convention centre in the kuiseb river valley, Namib desert
- Authors: Davids, Maretha
- Date: 2021-04
- Subjects: Convention facilities-- Namibia --Kuiseb river -- Designs and plans , Kuiseb River (Namibia)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/57466 , vital:57876
- Description: At least 55 million years old, the Namib Desert is the oldest desert in the world. With many species making up the diverse ecosystem the question remains, how do they survive with less than 200 mm of rainfall per year? (Lovegrove 1993) Survival in harsh climatic conditions have been tried and conquered across the world, from desert to artic conditions. With a harsh climatic environment and barren conditions, where does one set up a place of gathering? With tourism being one of the main pillars of the economy in Namibia. On an already existing route along a perennial water source, a conference centre is set up as a midway point for meeting of tourists with a local flair (Humavindu, 2013 Through learning from this environment and environments similar to these, the final product of this treatise results in a place of meeting along this string of settlements along the river, through means of bio-inspired design and phenomenological theories of place making. The challenge of nature vs building is questioned. Forming a unique experience as a sustainable oasis within the harsh surrounds the project sits within, amplifying the context in which it sits. , Thesis (MArch) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Davids, Maretha
- Date: 2021-04
- Subjects: Convention facilities-- Namibia --Kuiseb river -- Designs and plans , Kuiseb River (Namibia)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/57466 , vital:57876
- Description: At least 55 million years old, the Namib Desert is the oldest desert in the world. With many species making up the diverse ecosystem the question remains, how do they survive with less than 200 mm of rainfall per year? (Lovegrove 1993) Survival in harsh climatic conditions have been tried and conquered across the world, from desert to artic conditions. With a harsh climatic environment and barren conditions, where does one set up a place of gathering? With tourism being one of the main pillars of the economy in Namibia. On an already existing route along a perennial water source, a conference centre is set up as a midway point for meeting of tourists with a local flair (Humavindu, 2013 Through learning from this environment and environments similar to these, the final product of this treatise results in a place of meeting along this string of settlements along the river, through means of bio-inspired design and phenomenological theories of place making. The challenge of nature vs building is questioned. Forming a unique experience as a sustainable oasis within the harsh surrounds the project sits within, amplifying the context in which it sits. , Thesis (MArch) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-04
A discourse analysis of media representation of women political leaders in Uganda
- Authors: Kemirembe, Grace
- Date: 2023-03-30
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/408908 , vital:70536
- Description: This study is a qualitative desktop research project. The study employed a Feminist Critical Discourse Analysis to analyse and unpack the discursive ways in which female politicians are discussed and talked about in Ugandan online media. This study was a response to the realisation that online media portrayals of female politicians in Uganda remain largely unexplored. Additionally, the study discovered that the Daily Monitor and The Observer, the two newspapers that this thesis researched, often employ gender stereotypes and sexist coverage of female politicians in Uganda using personalisation, trivialisation and demonisation frames. The study illustrates that these misogynistic frames are intended to diminish women’s importance in the political sphere. Moreover, women who do not conform to the gender stereotypes are portrayed as social deviants. This work concludes that one of the challenges faced by women politicians in Uganda, and in Africa as a whole, is how to exploit online media’s productive capacity while, at the same time, resisting its use as an instrument that undermines them. Given the limited scope of the study using only two media organisations, future studies on media representation of female politicians could expand the range to include print and visual sources to provide generalisable results. , Thesis (MA) -- Faculty of Humanities, Political and International Studies, 2023
- Full Text:
- Date Issued: 2023-03-30
- Authors: Kemirembe, Grace
- Date: 2023-03-30
- Subjects: Uncatalogued
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/408908 , vital:70536
- Description: This study is a qualitative desktop research project. The study employed a Feminist Critical Discourse Analysis to analyse and unpack the discursive ways in which female politicians are discussed and talked about in Ugandan online media. This study was a response to the realisation that online media portrayals of female politicians in Uganda remain largely unexplored. Additionally, the study discovered that the Daily Monitor and The Observer, the two newspapers that this thesis researched, often employ gender stereotypes and sexist coverage of female politicians in Uganda using personalisation, trivialisation and demonisation frames. The study illustrates that these misogynistic frames are intended to diminish women’s importance in the political sphere. Moreover, women who do not conform to the gender stereotypes are portrayed as social deviants. This work concludes that one of the challenges faced by women politicians in Uganda, and in Africa as a whole, is how to exploit online media’s productive capacity while, at the same time, resisting its use as an instrument that undermines them. Given the limited scope of the study using only two media organisations, future studies on media representation of female politicians could expand the range to include print and visual sources to provide generalisable results. , Thesis (MA) -- Faculty of Humanities, Political and International Studies, 2023
- Full Text:
- Date Issued: 2023-03-30
A distributed approach to leadership in an academic department in a South African university: an exploratory case study
- Authors: Haufiku, Kenneth David
- Date: 2023-10-13
- Subjects: Universities and colleges Administration , Education, Higher South Africa , Distributed leadership , College department heads South Africa , School management and organization South Africa , Group decision making
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/419748 , vital:71672
- Description: The Head of Department (HOD) position at a university has traditionally been viewed as an individual construct. However, due to the demanding nature of such a position, it is not sought-after, as it remains exclusive and unappealing to many academics. Moreover, it is a position that does not encourage inclusive leadership. Tension and role ambiguity are known to arise between the scholarly project on the one hand and management and administrative matters on the other. To address challenges associated with this singular leadership position, an academic department at a South African university adopted a distributed leadership approach in their department as a research experiment. My study was based on this research experiment. I designed this research as an exploratory case study, guided by a socio-cultural conceptualisation of distributed leadership that included a leader-plus and a practice aspect, defined as a product of the interactions of school leaders, followers and their situation. This qualitative case study aimed to describe and explain how a distributed leadership approach was understood and practised in an academic department. It also investigated the enablements and constraints of the approach. Data were generated through document analysis, observation, and individual and focus group interviews. The participants in this study included the departmental leadership team and the department’s academic and administrative staff. Unfortunately, my study took place during the global COVID-19 pandemic and national lockdowns. I had no choice but to adapt my data generation methods due to lockdown restrictions. As a result, most data generation was done via online communication. The study used inductive and abductive analysis to make the data meaningful to the reader. The findings revealed that different participants had different ideas about distributed leadership. Distributed leadership was understood as a socio-cultural practice rather than an individual practice with multiple leaders in relational practice. In addition, this approach was understood as a way of developing and sharing expertise by encouraging teamwork, collegiality and collective decision-making which aligns with the notion of democratic decision-making which creates a platform for the enablement of leadership in others. The study further explored how distributed leadership was practised. The findings were that the HOD position, usually a one-person role, was reconceptualised as a HOD team comprised of three academics and the departmental administrator. The HOD team divided the work among themselves, and this was done according to each individual’s expertise. In addition, leadership within the academic department was not limited to the HOD team but stretched across the department; thus, multiple leaders were evident. Therefore, based on the data, this study discovered that a distributed approach values leadership expertise in others. Consequently, it can be used to promote an inclusive environment in which any organisation member can lead. Inclusivity in the decision-making process was also regarded as a strong practice in the academic department. As a result, this study contends that those in formal positions can develop leadership in others through a distributed leadership approach. Through that, lecturer leadership was enacted through formal faculty and university structures and informally as and when the situation required it. The enablements of this departmental leadership approach included the structural innovation of the Friday check-in as well as the buddy system. These two innovations provided the space for collegiality and the development of voice and leadership. The consultative nature of the HOD team was also viewed as an enablement. Certain factors constrained the distributed leadership approach, one of which was the tension between the hierarchical structure of the university and the more horizontal, distributed leadership approach being piloted in the academic department. In addition to that, another constraint was also very real with the transition to Zoom as an online teaching, learning and supervision platform as a consequence of the COVID-19 pandemic. The final constraint was experienced concerning the department’s history, as it was within a historically White university in South Africa. The effects of this history impacted the departmental culture and, as we know from the literature, institutional culture is extremely difficult to change. Finally, the study concluded that conceptualising distributed leadership as a sociocultural practice with leader-plus and practice aspects provides descriptive language and a solid theoretical and analytical framework for a distributed leadership study. The study makes an important knowledge contribution in the African Higher Education context as limited research has been carried out in this area. Furthermore, in terms of practice, my study serves as a stimulus for leadership discussions that are beneficial to everyone involved in educational institutions as they promote a level of leadership reflexivity, currently absent in many institutions. , Thesis (MEd) -- Faculty of Education, Secondary and Post-School Education, 2023
- Full Text:
- Date Issued: 2023-10-13
- Authors: Haufiku, Kenneth David
- Date: 2023-10-13
- Subjects: Universities and colleges Administration , Education, Higher South Africa , Distributed leadership , College department heads South Africa , School management and organization South Africa , Group decision making
- Language: English
- Type: Academic theses , Master's theses , text
- Identifier: http://hdl.handle.net/10962/419748 , vital:71672
- Description: The Head of Department (HOD) position at a university has traditionally been viewed as an individual construct. However, due to the demanding nature of such a position, it is not sought-after, as it remains exclusive and unappealing to many academics. Moreover, it is a position that does not encourage inclusive leadership. Tension and role ambiguity are known to arise between the scholarly project on the one hand and management and administrative matters on the other. To address challenges associated with this singular leadership position, an academic department at a South African university adopted a distributed leadership approach in their department as a research experiment. My study was based on this research experiment. I designed this research as an exploratory case study, guided by a socio-cultural conceptualisation of distributed leadership that included a leader-plus and a practice aspect, defined as a product of the interactions of school leaders, followers and their situation. This qualitative case study aimed to describe and explain how a distributed leadership approach was understood and practised in an academic department. It also investigated the enablements and constraints of the approach. Data were generated through document analysis, observation, and individual and focus group interviews. The participants in this study included the departmental leadership team and the department’s academic and administrative staff. Unfortunately, my study took place during the global COVID-19 pandemic and national lockdowns. I had no choice but to adapt my data generation methods due to lockdown restrictions. As a result, most data generation was done via online communication. The study used inductive and abductive analysis to make the data meaningful to the reader. The findings revealed that different participants had different ideas about distributed leadership. Distributed leadership was understood as a socio-cultural practice rather than an individual practice with multiple leaders in relational practice. In addition, this approach was understood as a way of developing and sharing expertise by encouraging teamwork, collegiality and collective decision-making which aligns with the notion of democratic decision-making which creates a platform for the enablement of leadership in others. The study further explored how distributed leadership was practised. The findings were that the HOD position, usually a one-person role, was reconceptualised as a HOD team comprised of three academics and the departmental administrator. The HOD team divided the work among themselves, and this was done according to each individual’s expertise. In addition, leadership within the academic department was not limited to the HOD team but stretched across the department; thus, multiple leaders were evident. Therefore, based on the data, this study discovered that a distributed approach values leadership expertise in others. Consequently, it can be used to promote an inclusive environment in which any organisation member can lead. Inclusivity in the decision-making process was also regarded as a strong practice in the academic department. As a result, this study contends that those in formal positions can develop leadership in others through a distributed leadership approach. Through that, lecturer leadership was enacted through formal faculty and university structures and informally as and when the situation required it. The enablements of this departmental leadership approach included the structural innovation of the Friday check-in as well as the buddy system. These two innovations provided the space for collegiality and the development of voice and leadership. The consultative nature of the HOD team was also viewed as an enablement. Certain factors constrained the distributed leadership approach, one of which was the tension between the hierarchical structure of the university and the more horizontal, distributed leadership approach being piloted in the academic department. In addition to that, another constraint was also very real with the transition to Zoom as an online teaching, learning and supervision platform as a consequence of the COVID-19 pandemic. The final constraint was experienced concerning the department’s history, as it was within a historically White university in South Africa. The effects of this history impacted the departmental culture and, as we know from the literature, institutional culture is extremely difficult to change. Finally, the study concluded that conceptualising distributed leadership as a sociocultural practice with leader-plus and practice aspects provides descriptive language and a solid theoretical and analytical framework for a distributed leadership study. The study makes an important knowledge contribution in the African Higher Education context as limited research has been carried out in this area. Furthermore, in terms of practice, my study serves as a stimulus for leadership discussions that are beneficial to everyone involved in educational institutions as they promote a level of leadership reflexivity, currently absent in many institutions. , Thesis (MEd) -- Faculty of Education, Secondary and Post-School Education, 2023
- Full Text:
- Date Issued: 2023-10-13
A double-edged sword : the minimum wage and agrarian labour in the Eastern Cape, South Africa, 2003–2014
- Authors: Naidoo, Lalitha
- Date: 2021-04
- Subjects: Minimum wage -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- Eastern Cape , Labor laws and legislation -- South Africa , Agricultural wages -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions , Agricultural laborers -- Legal status, laws, etc. -- South Africa -- Eastern Cape , Agricultural laws and legislation -- South Africa -- Eastern Cape , Work environment -- South Africa -- Eastern Cape , Economics -- Sociological aspects , South Africa -- Politics and government -- 1994-
- Language: English
- Type: thesis , text , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/177111 , vital:42791 , 10.21504/10962/177115
- Description: Statutory wage setting and the extension of labour laws to the South African agrarian labour market are path-breaking events that altered the unilateral power which agrarian employers had, under apartheid, to set low wages and harsh employment conditions. Yet, economic sociologists have shown little interest in the agrarian minimum wage in South Africa. Consequently, little to no sociological perspectives are available on the way in which statutory wages shape the setting of actual agrarian wages, employment conditions, labour relations and working and living conditions. At the same time, economic sociology’s neglect of agrarian minimum wages perpetuates the dominance of economics in minimum wage research, as well as the narrow cost-benefit analysis, and firm and employer-centric focus, deployed by both opponents of minimum wages in the neoclassical economics camp and supporters in the heterodox economics camp. The firm-centric focus also applies to the few labour relations scholars who focus on minimum wages. As a result, a wide body of empirical information is available and concentrated in the Global North, on low-waged, urban-based firms’ employment and labour relations strategies with the occasioning of minimum wage laws, with scant to non-existing information on rural-based workers’ experiences in the Global South, at least in the case of South Africa. This thesis addresses the lacuna in existing research, specifically by concentrating on agrarian workers’ narratives of the outcomes of minimum wages on actual wages and conditions, and experiences at the site of production and in the sphere of expanded social reproduction. The conceptual framework of the thesis is rooted in a critical realist meta-theory which directs inquiry towards the search for underlying causes of events with a sensitivity to the interaction of structure and agency, so as to develop explanations of events, which in turn encourage emancipatory thought and praxis. Within this framework, a political economy perspective of the agrarian minimum wage is charted, founded on an inter-disciplinary approach that incorporates economic sociology perspectives, which view markets as socio-political constructs, alongside a Marxist analysis of wages and the distinction between the value of labour and the value of labour power. Also relevant are segmentation labour market models where the focus is on segmentation in labour supply, demand and regulation, and institutional economics that highlights labour’s weak bargaining power in low-waged labour markets. Based on this analytical perspective, the South African agrarian minimum wage is seen as a necessary intervention stemming from post-apartheid uneven neoliberal restructuring processes, to address extremely low agrarian wages that pose threats to the ongoing generation of agrarian labour power. Low agrarian wages are located in unequal power relations in the workplace and are embedded in the totality of the low-waged agrarian labour market, composed of particular features in the supply-side of the labour market (the sphere of social reproduction of labour), the demand-side of the labour market (the site of production), and the forces of regulation (the labour relations regime). The thesis explores new ways of conceptualising minimum wages in the South African context, placing emphasis on the local agrarian labour market, and it highlights the agency of agrarian labour by revealing their struggles, working life and living conditions. In so doing, the research expands inquiry beyond economic “impact” at the level of the firm/employer to examine: (a) workers’ employment trends before and after the minimum wage was introduced, (b) the extent of changes in working and living conditions and labour relations, (c) the scope for workers in animating changes and their struggles and challenges, and (d) shifts in actual wages in relation to prescribed wage rates. Focussing on the aforementioned aspects represents an attempt in this thesis to build on themes, raised in heterodox economics studies, of minimum wages and their relationship to the social devaluation of low-waged work, inequalities in bargaining power, and justice. Based on a stratified sample of workers that included, among other variables, sex, geographical area and agricultural sub-sectors, original data was collected through 52 in-depth interviews, two focus group interviews (comprised of 10 workers), and 501 surveyed workers. The research did not find widespread job losses when minimum wages were introduced, as per neoclassical economics’ predictions. Nor did it find transitions from low- to high-road approaches in employment strategies and labour relations, as claimed by certain heterodox economists. Instead, the findings at the sites of production corroborate the uneven, mixed and contradictory findings of applied heterodox minimum wage studies on employment strategies, labour relations and wage settings. In this light, it is concluded that the agrarian minimum wage had layered outcomes for workers based on key findings, which include: (a) the minimum wage became the maximum wage as actual wages increased and clustered at the prescribed wage rate; (b) a level of gender wage parity close to the level of the prevailing prescribed minimum wage was found, but an overall gendered pattern to low-waged employment surfaced and manifested differently at sub-sector and enterprise levels; (c) though no changes were found in the way work was organised and how workers executed their tasks alongside no fundamental changes in the social relations of production, statutory minimum wages and limitations on working hours did reduce the hours of work and the existence of unpaid overtime work in certain sub-sectors such as livestock and dairy workplaces, through worker and employer initiatives (yet, at the same time, work intensification in compressed working hours appeared in the sample in other worksites, for example citrus workplaces); (d) authoritarian labour relations existed in varying depths and forms, based on sub-sector and enterprise characteristics, which shaped the propensity and scope for worker action; and (e) the layered outcomes of the agrarian minimum wage were felt at the site of social reproduction, where it brought a measure of relief for sampled workers; however, it was chronically inadequate to allow workers to meet their subsistence needs comprehensively. The research findings also highlight sub-sectoral complexities in changing employment and labour relations strategies from low- to high-road approaches in the agrarian sector. The layered outcomes of minimum wages for agrarian workers stems from the combined and uneven amalgamation of pre-existing and new conditions and relations consequent to neoliberalising processes in the agrarian political economy as well as the low minimum wage-setting. The thesis thus argues that the mixed outcomes reflect the layered character of the minimum wage as a conversion factor, which in turn equates to a layered notion of justice. This is because, on the one hand, the minimum wage ameliorates the plight of agrarian labour but, on the other hand, and given the bulwark of authoritarianism, pre-existing conditions and neoliberalising processes, the collective vulnerabilities in the agrarian labour market have expanded and may be intensifying. The agrarian minimum wage acts as a double-edged sword in contexts of mixed and layered outcomes for agrarian labour. A layered perspective of the conversion factor of a minimum wage exposes the possibilities and limitations of statutory wages as a conversion factor, based on context, and identifies the limits and possibilities for worker mobilisation and action. In the case of this research, the agrarian minimum wage deals in limited fashion with the value of labour power because of the initial and subsequent low settings; the minimum wage does not deal with class exploitation and the value of labour, although it sets the frame for instigating basic labour standards. The implications of a layered conversion potential of low minimum wage-settings are profound for conceptualising, theorising and researching the link between statutory wages and justice, with respect to the value of labour power and the value of labour. Future research on the minimum wage based on a Marxist reading of wages and located in real labour markets, strengthens heterodox approaches by deepening theories on the relationship between statutory wages, justice and production. , Thesis (PhD) -- Faculty of Humanities, Department of Sociology, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Naidoo, Lalitha
- Date: 2021-04
- Subjects: Minimum wage -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- Eastern Cape , Labor laws and legislation -- South Africa , Agricultural wages -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions , Agricultural laborers -- Legal status, laws, etc. -- South Africa -- Eastern Cape , Agricultural laws and legislation -- South Africa -- Eastern Cape , Work environment -- South Africa -- Eastern Cape , Economics -- Sociological aspects , South Africa -- Politics and government -- 1994-
- Language: English
- Type: thesis , text , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/177111 , vital:42791 , 10.21504/10962/177115
- Description: Statutory wage setting and the extension of labour laws to the South African agrarian labour market are path-breaking events that altered the unilateral power which agrarian employers had, under apartheid, to set low wages and harsh employment conditions. Yet, economic sociologists have shown little interest in the agrarian minimum wage in South Africa. Consequently, little to no sociological perspectives are available on the way in which statutory wages shape the setting of actual agrarian wages, employment conditions, labour relations and working and living conditions. At the same time, economic sociology’s neglect of agrarian minimum wages perpetuates the dominance of economics in minimum wage research, as well as the narrow cost-benefit analysis, and firm and employer-centric focus, deployed by both opponents of minimum wages in the neoclassical economics camp and supporters in the heterodox economics camp. The firm-centric focus also applies to the few labour relations scholars who focus on minimum wages. As a result, a wide body of empirical information is available and concentrated in the Global North, on low-waged, urban-based firms’ employment and labour relations strategies with the occasioning of minimum wage laws, with scant to non-existing information on rural-based workers’ experiences in the Global South, at least in the case of South Africa. This thesis addresses the lacuna in existing research, specifically by concentrating on agrarian workers’ narratives of the outcomes of minimum wages on actual wages and conditions, and experiences at the site of production and in the sphere of expanded social reproduction. The conceptual framework of the thesis is rooted in a critical realist meta-theory which directs inquiry towards the search for underlying causes of events with a sensitivity to the interaction of structure and agency, so as to develop explanations of events, which in turn encourage emancipatory thought and praxis. Within this framework, a political economy perspective of the agrarian minimum wage is charted, founded on an inter-disciplinary approach that incorporates economic sociology perspectives, which view markets as socio-political constructs, alongside a Marxist analysis of wages and the distinction between the value of labour and the value of labour power. Also relevant are segmentation labour market models where the focus is on segmentation in labour supply, demand and regulation, and institutional economics that highlights labour’s weak bargaining power in low-waged labour markets. Based on this analytical perspective, the South African agrarian minimum wage is seen as a necessary intervention stemming from post-apartheid uneven neoliberal restructuring processes, to address extremely low agrarian wages that pose threats to the ongoing generation of agrarian labour power. Low agrarian wages are located in unequal power relations in the workplace and are embedded in the totality of the low-waged agrarian labour market, composed of particular features in the supply-side of the labour market (the sphere of social reproduction of labour), the demand-side of the labour market (the site of production), and the forces of regulation (the labour relations regime). The thesis explores new ways of conceptualising minimum wages in the South African context, placing emphasis on the local agrarian labour market, and it highlights the agency of agrarian labour by revealing their struggles, working life and living conditions. In so doing, the research expands inquiry beyond economic “impact” at the level of the firm/employer to examine: (a) workers’ employment trends before and after the minimum wage was introduced, (b) the extent of changes in working and living conditions and labour relations, (c) the scope for workers in animating changes and their struggles and challenges, and (d) shifts in actual wages in relation to prescribed wage rates. Focussing on the aforementioned aspects represents an attempt in this thesis to build on themes, raised in heterodox economics studies, of minimum wages and their relationship to the social devaluation of low-waged work, inequalities in bargaining power, and justice. Based on a stratified sample of workers that included, among other variables, sex, geographical area and agricultural sub-sectors, original data was collected through 52 in-depth interviews, two focus group interviews (comprised of 10 workers), and 501 surveyed workers. The research did not find widespread job losses when minimum wages were introduced, as per neoclassical economics’ predictions. Nor did it find transitions from low- to high-road approaches in employment strategies and labour relations, as claimed by certain heterodox economists. Instead, the findings at the sites of production corroborate the uneven, mixed and contradictory findings of applied heterodox minimum wage studies on employment strategies, labour relations and wage settings. In this light, it is concluded that the agrarian minimum wage had layered outcomes for workers based on key findings, which include: (a) the minimum wage became the maximum wage as actual wages increased and clustered at the prescribed wage rate; (b) a level of gender wage parity close to the level of the prevailing prescribed minimum wage was found, but an overall gendered pattern to low-waged employment surfaced and manifested differently at sub-sector and enterprise levels; (c) though no changes were found in the way work was organised and how workers executed their tasks alongside no fundamental changes in the social relations of production, statutory minimum wages and limitations on working hours did reduce the hours of work and the existence of unpaid overtime work in certain sub-sectors such as livestock and dairy workplaces, through worker and employer initiatives (yet, at the same time, work intensification in compressed working hours appeared in the sample in other worksites, for example citrus workplaces); (d) authoritarian labour relations existed in varying depths and forms, based on sub-sector and enterprise characteristics, which shaped the propensity and scope for worker action; and (e) the layered outcomes of the agrarian minimum wage were felt at the site of social reproduction, where it brought a measure of relief for sampled workers; however, it was chronically inadequate to allow workers to meet their subsistence needs comprehensively. The research findings also highlight sub-sectoral complexities in changing employment and labour relations strategies from low- to high-road approaches in the agrarian sector. The layered outcomes of minimum wages for agrarian workers stems from the combined and uneven amalgamation of pre-existing and new conditions and relations consequent to neoliberalising processes in the agrarian political economy as well as the low minimum wage-setting. The thesis thus argues that the mixed outcomes reflect the layered character of the minimum wage as a conversion factor, which in turn equates to a layered notion of justice. This is because, on the one hand, the minimum wage ameliorates the plight of agrarian labour but, on the other hand, and given the bulwark of authoritarianism, pre-existing conditions and neoliberalising processes, the collective vulnerabilities in the agrarian labour market have expanded and may be intensifying. The agrarian minimum wage acts as a double-edged sword in contexts of mixed and layered outcomes for agrarian labour. A layered perspective of the conversion factor of a minimum wage exposes the possibilities and limitations of statutory wages as a conversion factor, based on context, and identifies the limits and possibilities for worker mobilisation and action. In the case of this research, the agrarian minimum wage deals in limited fashion with the value of labour power because of the initial and subsequent low settings; the minimum wage does not deal with class exploitation and the value of labour, although it sets the frame for instigating basic labour standards. The implications of a layered conversion potential of low minimum wage-settings are profound for conceptualising, theorising and researching the link between statutory wages and justice, with respect to the value of labour power and the value of labour. Future research on the minimum wage based on a Marxist reading of wages and located in real labour markets, strengthens heterodox approaches by deepening theories on the relationship between statutory wages, justice and production. , Thesis (PhD) -- Faculty of Humanities, Department of Sociology, 2021
- Full Text:
- Date Issued: 2021-04
A Facile Effective Method for the Synthesis of Au-Cdse Nanostructures and their Characterisations.
- Authors: Gaxela, Nelisa Ncumisa
- Date: 2016-5
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3238 , vital:43198
- Description: ABSTRACT We report the synthesis of aqueous and organically soluble cadmium selenide (CdSe) nanoparticles (NPs) doped with gold via a facile and effective method. Briefly the synthesis involves the reduction of selenium powder using sodium sulphite to produce sodium selenosulphate which acts as the selenium source, followed by the addition of CdX (X = Cl2, CH3COO, NO3). The nanoparticles were passivated with trisodium citrate, mercaptopropanoic acid (MPA), potassium sodium tartarate (PST) and L-cysteine which rendered them soluble in water and also acted as stabilizing agents, while passivation with hexadecylamine (HDA) made them soluble in organic solvent which also enhanced their stability. The high quality of the as-synthesized nanoparticles was confirmed using absorption and photoluminescence (PL) spectroscopy, Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and high resolution TEM (HRTEM). The systematic study of the effect of mole ratio, temperature, capping agent, growth time, cadmium precursor and ratio of Au on the size, optical and structural properties on the water soluble CdSe nanoparticles were investigated. All the as-synthesised particles, are blue-shifted in relation to the bulk band gap of CdSe. As the Cd: Se mole ratio increases, the intensity of the citrate capped CdSe materials also increases and the particle sizes are in the range of 2.06 – 4.00 nm. When the temperature was increased, the luminescence intensity quenched whereas the particle size increased. As the growth time increased, the intensity increased and then decreased again towards the end of the reaction. When different capping agents were used the particle sizes range from 2.06 – 3.36 nm for citrate, 2.08 – 3.33 nm for MPA, 2.01 – 2.28 nm for L-cysteine and polydispersed for PST. The luminescence intensity decreased in the order citrate > cysteine > PST > MPA when CdCl2 was used as cadmium precursor. When different cadmium precursors were used for L-cysteine, the particle sizes range from 2.06 – 2.31 nm for Cd(CH3COO)2 and 2.00 – 2.37 nm for Cd(NO3)2 while the intensity increased as the reaction time increased, however, still lower than the CdCl2 materials. The effect of Au ratio showed that the intensity of Au-doped cysteine capped-CdSe increased as the Au ratio decreased. The systematic study of the effect of temperature and growth time in the organic soluble CdSe nanoparticles on the size, optical and structural properties was also investigated. All the as-synthesised particles were blue-shifted in relation to the bulk CdSe. As the temperature increased the particle sizes of the undoped materials range between 2.92 – 2.95 nm at 160 °C and 5.35 – 5.39 nm at 200 °C while for the doped materials the particle size range from 2.53 – 2.61 nm at 160 °C, 3.97 nm at 200 °C and 4.20 – 4.72 nm at 240 °C. The intensity of the doped materials increased as the reaction time increased and then decreased again towards the end of the reaction. After ligand exchange the intensity of the as-synthesized doped and undoped-CdSe NPs was very low compare to the parent organically capped doped and un-doped CdSe. It was discovered that without any further purification, the quality of the materials formed by this method is comparable to that of the best CdSe NPs reported in the literature. This method is safe, inexpensive and reproducible. , Thesis (MsC Chemistry) -- Faculty of Natural Sciences, 2019
- Full Text:
- Date Issued: 2016-5
- Authors: Gaxela, Nelisa Ncumisa
- Date: 2016-5
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3238 , vital:43198
- Description: ABSTRACT We report the synthesis of aqueous and organically soluble cadmium selenide (CdSe) nanoparticles (NPs) doped with gold via a facile and effective method. Briefly the synthesis involves the reduction of selenium powder using sodium sulphite to produce sodium selenosulphate which acts as the selenium source, followed by the addition of CdX (X = Cl2, CH3COO, NO3). The nanoparticles were passivated with trisodium citrate, mercaptopropanoic acid (MPA), potassium sodium tartarate (PST) and L-cysteine which rendered them soluble in water and also acted as stabilizing agents, while passivation with hexadecylamine (HDA) made them soluble in organic solvent which also enhanced their stability. The high quality of the as-synthesized nanoparticles was confirmed using absorption and photoluminescence (PL) spectroscopy, Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and high resolution TEM (HRTEM). The systematic study of the effect of mole ratio, temperature, capping agent, growth time, cadmium precursor and ratio of Au on the size, optical and structural properties on the water soluble CdSe nanoparticles were investigated. All the as-synthesised particles, are blue-shifted in relation to the bulk band gap of CdSe. As the Cd: Se mole ratio increases, the intensity of the citrate capped CdSe materials also increases and the particle sizes are in the range of 2.06 – 4.00 nm. When the temperature was increased, the luminescence intensity quenched whereas the particle size increased. As the growth time increased, the intensity increased and then decreased again towards the end of the reaction. When different capping agents were used the particle sizes range from 2.06 – 3.36 nm for citrate, 2.08 – 3.33 nm for MPA, 2.01 – 2.28 nm for L-cysteine and polydispersed for PST. The luminescence intensity decreased in the order citrate > cysteine > PST > MPA when CdCl2 was used as cadmium precursor. When different cadmium precursors were used for L-cysteine, the particle sizes range from 2.06 – 2.31 nm for Cd(CH3COO)2 and 2.00 – 2.37 nm for Cd(NO3)2 while the intensity increased as the reaction time increased, however, still lower than the CdCl2 materials. The effect of Au ratio showed that the intensity of Au-doped cysteine capped-CdSe increased as the Au ratio decreased. The systematic study of the effect of temperature and growth time in the organic soluble CdSe nanoparticles on the size, optical and structural properties was also investigated. All the as-synthesised particles were blue-shifted in relation to the bulk CdSe. As the temperature increased the particle sizes of the undoped materials range between 2.92 – 2.95 nm at 160 °C and 5.35 – 5.39 nm at 200 °C while for the doped materials the particle size range from 2.53 – 2.61 nm at 160 °C, 3.97 nm at 200 °C and 4.20 – 4.72 nm at 240 °C. The intensity of the doped materials increased as the reaction time increased and then decreased again towards the end of the reaction. After ligand exchange the intensity of the as-synthesized doped and undoped-CdSe NPs was very low compare to the parent organically capped doped and un-doped CdSe. It was discovered that without any further purification, the quality of the materials formed by this method is comparable to that of the best CdSe NPs reported in the literature. This method is safe, inexpensive and reproducible. , Thesis (MsC Chemistry) -- Faculty of Natural Sciences, 2019
- Full Text:
- Date Issued: 2016-5
A Feminist Analysis of Lyman Frank Baum’s The Wonderful Wizard of Oz, Lucy Maud Montgomery’s Anne of Green Gables and Frances Hodgson Burnett’s The Secret Garden
- Authors: Becker, Bonnie
- Date: 2013-01
- Subjects: Fiction , Children , Orphans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23214 , vital:55905
- Description: The primary aim of this project is to provide a close contextual and textual analysis of the selected children’s classics: The Wonderful Wizard of Oz, Anne of Green Gables and The Secret Garden using the feminist literary theory. From this perspective I have shown how the selected works of Lyman Frank Baum, Lucy Maud Montgomery and Frances Hodgson Burnett’s writing have contributed to women’s stereotypical roles within society and perpetuated their subjugated position. I have also conducted an examination of the extent to which the female protagonists attempt to emancipate themselves from gender oppression. A comparative study of the selected children’s texts has not yet been conducted and therefore this project serves as a significant contribution to this field of study. An exploration of the historical background of the authors and children’s literature is conducted to provide an overview into the inner workings of the writers’ lives and the historical significance of children’s literature as a genre. The theoretical framework of feminist literary theory is used in the analysis of the selected texts. The connection between feminist literary theory and children’s literature is highlighted and provides further understanding of the purpose of this study. The history of feminism as both a movement and a contemporary literary criticism is explored. Simone de Beauvoir’s The Second Sex is used when analysing the texts’ characters and how they are based on society’s stereotypical gender roles. Luce Irigaray’s Speculum of the Other Woman and This Sex Which is Not One is examined to aid in an exploration of psychological female oppression through feminine and masculine discourse evident in the creation of the novels’ female and male characters. Hélène Cixous’ “The Laugh of the Medusa” and The Newly Born Woman is interrogated according to the stereotypical ideology surrounding the terms masculinity and femininity and how these terms are interpreted in the selected works. Judith Butler’s Gender Trouble and Undoing Gender are additionally explored to assist in the understanding of the concept of gender performativity and through the lens of Butler’s interpolation of gender the move towards the emancipation of women is seen in the selected children’s texts. The close textual feminist analysis focuses on the female protagonists: Dorothy, Anne and Mary as well as the secondary female characters: the wicked witches, Aunt Em, the Queen of the Field-Mice, the princess made from china, Glinda’s female soldiers from The Wonderful Wizard of Oz; Marilla Cuthbert, Rachel Lynde and Diana Barry from Anne of Green Gables and Martha, Mrs Sowerby and Mrs Craven from The Secret Garden. The portrayal of the secondary male characters are additionally explored according to feminist literary theory: The Scarecrow, the Tin Woodman, the Lion and the wizard Oz from The Wonderful Wizard of Oz; Matthew Cuthbert and Gilbert Blythe from Anne of the Green Gables’ and Mr Craven, Colin Craven and Dickon Sowerby from The Secret Garden. The comparison of these children’s classics by Baum, Montgomery and Burnett provides insight into the selected works of all three writers, through the lens offered by feminist literary theory. Through the interrogation of these representative female protagonists found in early children’s literature, an understanding of not only the subordination of women, as evident in literature during this era, is illustrated but also the comprehension that women’s liberation was foreshadowed in these early children’s novels. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Becker, Bonnie
- Date: 2013-01
- Subjects: Fiction , Children , Orphans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23214 , vital:55905
- Description: The primary aim of this project is to provide a close contextual and textual analysis of the selected children’s classics: The Wonderful Wizard of Oz, Anne of Green Gables and The Secret Garden using the feminist literary theory. From this perspective I have shown how the selected works of Lyman Frank Baum, Lucy Maud Montgomery and Frances Hodgson Burnett’s writing have contributed to women’s stereotypical roles within society and perpetuated their subjugated position. I have also conducted an examination of the extent to which the female protagonists attempt to emancipate themselves from gender oppression. A comparative study of the selected children’s texts has not yet been conducted and therefore this project serves as a significant contribution to this field of study. An exploration of the historical background of the authors and children’s literature is conducted to provide an overview into the inner workings of the writers’ lives and the historical significance of children’s literature as a genre. The theoretical framework of feminist literary theory is used in the analysis of the selected texts. The connection between feminist literary theory and children’s literature is highlighted and provides further understanding of the purpose of this study. The history of feminism as both a movement and a contemporary literary criticism is explored. Simone de Beauvoir’s The Second Sex is used when analysing the texts’ characters and how they are based on society’s stereotypical gender roles. Luce Irigaray’s Speculum of the Other Woman and This Sex Which is Not One is examined to aid in an exploration of psychological female oppression through feminine and masculine discourse evident in the creation of the novels’ female and male characters. Hélène Cixous’ “The Laugh of the Medusa” and The Newly Born Woman is interrogated according to the stereotypical ideology surrounding the terms masculinity and femininity and how these terms are interpreted in the selected works. Judith Butler’s Gender Trouble and Undoing Gender are additionally explored to assist in the understanding of the concept of gender performativity and through the lens of Butler’s interpolation of gender the move towards the emancipation of women is seen in the selected children’s texts. The close textual feminist analysis focuses on the female protagonists: Dorothy, Anne and Mary as well as the secondary female characters: the wicked witches, Aunt Em, the Queen of the Field-Mice, the princess made from china, Glinda’s female soldiers from The Wonderful Wizard of Oz; Marilla Cuthbert, Rachel Lynde and Diana Barry from Anne of Green Gables and Martha, Mrs Sowerby and Mrs Craven from The Secret Garden. The portrayal of the secondary male characters are additionally explored according to feminist literary theory: The Scarecrow, the Tin Woodman, the Lion and the wizard Oz from The Wonderful Wizard of Oz; Matthew Cuthbert and Gilbert Blythe from Anne of the Green Gables’ and Mr Craven, Colin Craven and Dickon Sowerby from The Secret Garden. The comparison of these children’s classics by Baum, Montgomery and Burnett provides insight into the selected works of all three writers, through the lens offered by feminist literary theory. Through the interrogation of these representative female protagonists found in early children’s literature, an understanding of not only the subordination of women, as evident in literature during this era, is illustrated but also the comprehension that women’s liberation was foreshadowed in these early children’s novels. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
A framework for communicating climate information to rural small-scale farmers in the Eastern Cape Province, South Africa using systems thinking approach
- Pindura, Tineyi Herbert https://orcid.org/0000-0001-7233-6222
- Authors: Pindura, Tineyi Herbert https://orcid.org/0000-0001-7233-6222
- Date: 2022-02
- Subjects: Farms, Small , Agriculture -- Environmental aspects , Climatic changes
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/22809 , vital:52784
- Description: In the Eastern Cape of South Africa, rural small-scale farmers live in uncertain times characterized by climate change and variability, which intensify social, political and financial inequalities. Therefore, there is a need to increase the understanding and interpretation of climate information to minimize crop production risk, reduce rural small-scale farmers’ vulnerability to climate, and maximize opportunities. Increasing the resilience among rural small-scale farmers requires appropriate and viable practical approaches. By using systems thinking approach (and the Raymond Mhlaba Municipality in the Eastern Cape as a study area), this research disseminates the complex nature of current climate information frameworks. Through inputs from farmers (through a Farmers Research Group methodology) and climate data, this thesis developed a new framework for communicating climate information (herein referred as the climate information communication systems framework) to rural small-scale farmers. The proposed climate information communication systems framework successfully integrates scientific and traditional knowledge. The framework constitutes certain stages, where the farming system and crop identification is the first stage. The second stage is the requirements stage, which has two relationships: scientist to crop requirements and farmers to crop requirements. At the scientist to crop requirements level, users will examine crop requirements by combining climatic data and crop simulations, while at the farmers to crop requirement, rural small-scale farmers use the scientific information to plan for the farming season. The farmer then decides the planting and growing period as well as the harvest timing. The study suggests that building links between rural small-scale farmers, extension officers, and scientists makes sharing information easier. The proposed climate information framework design illustrates that stakeholders now have a personal relationship with climate information transmission and can influence the different actions to reduce the effect of climate change unpredictability. The study established that climate change and variability influence recent agricultural output trends. Recent temperature and rainfall trends could have resulted in low crop productivity in the study area. The study also reflected that women are a critical resource in agriculture and rural economy and that middle-aged men and youth are less interested in farming. The findings also showed that women are more receptive to climate information; hence, to promote access and use of climate information remains vital to consider gender-specific aspects for appropriate decision-making in the agriculture sector. The study also recommends enhancing the Farmers Research Group technique. In the past, the scope of this methodology has been narrowly focused, and it must be explored to incorporate additional types of climate information and more debate about how climate is related to the decisions farmers for implementation or consideration. , Thesis (PhD) -- Faculty of Science and Agriculture, 2022
- Full Text:
- Date Issued: 2022-02
- Authors: Pindura, Tineyi Herbert https://orcid.org/0000-0001-7233-6222
- Date: 2022-02
- Subjects: Farms, Small , Agriculture -- Environmental aspects , Climatic changes
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/22809 , vital:52784
- Description: In the Eastern Cape of South Africa, rural small-scale farmers live in uncertain times characterized by climate change and variability, which intensify social, political and financial inequalities. Therefore, there is a need to increase the understanding and interpretation of climate information to minimize crop production risk, reduce rural small-scale farmers’ vulnerability to climate, and maximize opportunities. Increasing the resilience among rural small-scale farmers requires appropriate and viable practical approaches. By using systems thinking approach (and the Raymond Mhlaba Municipality in the Eastern Cape as a study area), this research disseminates the complex nature of current climate information frameworks. Through inputs from farmers (through a Farmers Research Group methodology) and climate data, this thesis developed a new framework for communicating climate information (herein referred as the climate information communication systems framework) to rural small-scale farmers. The proposed climate information communication systems framework successfully integrates scientific and traditional knowledge. The framework constitutes certain stages, where the farming system and crop identification is the first stage. The second stage is the requirements stage, which has two relationships: scientist to crop requirements and farmers to crop requirements. At the scientist to crop requirements level, users will examine crop requirements by combining climatic data and crop simulations, while at the farmers to crop requirement, rural small-scale farmers use the scientific information to plan for the farming season. The farmer then decides the planting and growing period as well as the harvest timing. The study suggests that building links between rural small-scale farmers, extension officers, and scientists makes sharing information easier. The proposed climate information framework design illustrates that stakeholders now have a personal relationship with climate information transmission and can influence the different actions to reduce the effect of climate change unpredictability. The study established that climate change and variability influence recent agricultural output trends. Recent temperature and rainfall trends could have resulted in low crop productivity in the study area. The study also reflected that women are a critical resource in agriculture and rural economy and that middle-aged men and youth are less interested in farming. The findings also showed that women are more receptive to climate information; hence, to promote access and use of climate information remains vital to consider gender-specific aspects for appropriate decision-making in the agriculture sector. The study also recommends enhancing the Farmers Research Group technique. In the past, the scope of this methodology has been narrowly focused, and it must be explored to incorporate additional types of climate information and more debate about how climate is related to the decisions farmers for implementation or consideration. , Thesis (PhD) -- Faculty of Science and Agriculture, 2022
- Full Text:
- Date Issued: 2022-02
A framework for continuing professional development of teachers in regular primary schools: towards the effective teaching of learners with special education needs in Zimbabwe
- Muguwe, Emely https://orcid.org/0000-0003-2156-8642
- Authors: Muguwe, Emely https://orcid.org/0000-0003-2156-8642
- Date: 2015-05
- Subjects: Teachers -- Training of , Teachers -- In-service training.
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24794 , vital:63576
- Description: This study focused on Continuing Professional Development (CPD) needs of teachers in regular primary schools for the effective teaching of learners with special education needs in Zimbabwe. The motivation of the study emerged from concerns raised by stakeholders that teachers were inadequately prepared to teach learners with special education needs in general education classrooms. This study was underpinned by the post-positivistic paradigm which takes on both quantitative and qualitative approaches. The study also employed the survey design, which utilised the mixed methods approach. The accessible population comprised 93 primary schools and 1 457 teachers, 93 school heads and all education officers in the Gweru District of Zimbabwe. The researcher used purposive and disproportional random sampling. Ten schools were purposively selected from a population of 93 schools in the Gweru District. One hundred and fifty teachers (10percent of the population) which translated into 15 teachers from each school, were selected from the 10 schools through disproportional stratified random sampling in order to include both male (n=69) and female (n=81) teachers in the study. Semi-structured questionnaires, semi-structured face- to- face interviews and focus group discussions are the data collection methods which were used in this study. Data were presented, analysed and discussed, starting with demographic data in the first section, followed by quantitative data which were presented concurrently with corresponding emerging themes from qualitative data. The data collected via the questionnaires were coded and key-punched for analysis. Data were presented in tables, bar graphs and pie charts. Findings of the study revealed that there is a dire need for knowledge and skills in SEN among teachers in regular schools. Teachers needed to be prepared for a paradigm shift of the inclusive era. Teachers also needed to identify their own needs to ensure that relevant and preferred areas were covered. Findings revealed that teachers preferred well-structured CPD which is facilitated by an expert and CPD held in their own schools, where good practices are shared with workmates. Findings also confirmed the availability of policy circulars in schools, although some teachers expressed that they were not aware of such circulars. There were no specific days allocated specifically for school CPD. Most teachers were not availed with the opportunity to attend out-of-school based workshops; and cascading of information led to dilution of original ideas. There was lack of adequate mentoring among qualified teachers. Teachers preferred the standards-based model for promotion purposes although it was limiting in terms of teachers’ learning. The training model was viewed as a productive way of quickly in-servicing teachers relative to its cost. The communities of practice model and transformative model were not being utilised in schools due to national policies that govern teachers. Findings also revealed that teachers faced major challenges such as funding of CPD, getting information on CPD opportunities and time to engage in CPD activities. Teachers reeled with a lot of pressure resulting in burn-out as a result of large classes. Although staff development meetings were held in schools, they were mostly administrative and nothing definite was being done to mitigate the challenges which teachers were facing in accessing CPD opportunities. Teachers opted for a CPD framework which would give them more information and more opportunities for CPD on SEN, better access to teaching materials and more opportunities to work with experienced practitioners in SEN. Teachers preferred a framework based on a variety of CPD models, more school-based CPD rather than out of school -based CPD. The researcher concluded that teachers in regular schools were not equipped to teach learners with special education needs in the mainstream. The Ministry of Primary and Secondary Education was not employing the best models in preparing teachers to be effective. Teachers were facing challenges such as, funding, unavailability of information and time in accessing CPD opportunities. The study recommends that The Ministry of Primary and Secondary Education should put in place provisions to meet the CPD needs of teachers. Teachers should be fully involved in the identification of CPD needs. It was also recommends that school heads needed CPD on SEN for them to be able to guide teachers properly and to be supportive of the policy. Besides national policies, schools should design CPD policies specifically for their respective schools, in line with national policies. Andragogy principles, Wenger’s social learning theory and Vygotsky’s perspective among others, should underpin the CPD framework. The study recommends an alternative CPD model which would utilise a combination of transmissive, transitional and transformative models and modes of delivery as lenses in meeting the CPD needs of teachers in the context of SEN. , Thesis (PhD) -- Faculty of Education, 2015
- Full Text:
- Date Issued: 2015-05
- Authors: Muguwe, Emely https://orcid.org/0000-0003-2156-8642
- Date: 2015-05
- Subjects: Teachers -- Training of , Teachers -- In-service training.
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24794 , vital:63576
- Description: This study focused on Continuing Professional Development (CPD) needs of teachers in regular primary schools for the effective teaching of learners with special education needs in Zimbabwe. The motivation of the study emerged from concerns raised by stakeholders that teachers were inadequately prepared to teach learners with special education needs in general education classrooms. This study was underpinned by the post-positivistic paradigm which takes on both quantitative and qualitative approaches. The study also employed the survey design, which utilised the mixed methods approach. The accessible population comprised 93 primary schools and 1 457 teachers, 93 school heads and all education officers in the Gweru District of Zimbabwe. The researcher used purposive and disproportional random sampling. Ten schools were purposively selected from a population of 93 schools in the Gweru District. One hundred and fifty teachers (10percent of the population) which translated into 15 teachers from each school, were selected from the 10 schools through disproportional stratified random sampling in order to include both male (n=69) and female (n=81) teachers in the study. Semi-structured questionnaires, semi-structured face- to- face interviews and focus group discussions are the data collection methods which were used in this study. Data were presented, analysed and discussed, starting with demographic data in the first section, followed by quantitative data which were presented concurrently with corresponding emerging themes from qualitative data. The data collected via the questionnaires were coded and key-punched for analysis. Data were presented in tables, bar graphs and pie charts. Findings of the study revealed that there is a dire need for knowledge and skills in SEN among teachers in regular schools. Teachers needed to be prepared for a paradigm shift of the inclusive era. Teachers also needed to identify their own needs to ensure that relevant and preferred areas were covered. Findings revealed that teachers preferred well-structured CPD which is facilitated by an expert and CPD held in their own schools, where good practices are shared with workmates. Findings also confirmed the availability of policy circulars in schools, although some teachers expressed that they were not aware of such circulars. There were no specific days allocated specifically for school CPD. Most teachers were not availed with the opportunity to attend out-of-school based workshops; and cascading of information led to dilution of original ideas. There was lack of adequate mentoring among qualified teachers. Teachers preferred the standards-based model for promotion purposes although it was limiting in terms of teachers’ learning. The training model was viewed as a productive way of quickly in-servicing teachers relative to its cost. The communities of practice model and transformative model were not being utilised in schools due to national policies that govern teachers. Findings also revealed that teachers faced major challenges such as funding of CPD, getting information on CPD opportunities and time to engage in CPD activities. Teachers reeled with a lot of pressure resulting in burn-out as a result of large classes. Although staff development meetings were held in schools, they were mostly administrative and nothing definite was being done to mitigate the challenges which teachers were facing in accessing CPD opportunities. Teachers opted for a CPD framework which would give them more information and more opportunities for CPD on SEN, better access to teaching materials and more opportunities to work with experienced practitioners in SEN. Teachers preferred a framework based on a variety of CPD models, more school-based CPD rather than out of school -based CPD. The researcher concluded that teachers in regular schools were not equipped to teach learners with special education needs in the mainstream. The Ministry of Primary and Secondary Education was not employing the best models in preparing teachers to be effective. Teachers were facing challenges such as, funding, unavailability of information and time in accessing CPD opportunities. The study recommends that The Ministry of Primary and Secondary Education should put in place provisions to meet the CPD needs of teachers. Teachers should be fully involved in the identification of CPD needs. It was also recommends that school heads needed CPD on SEN for them to be able to guide teachers properly and to be supportive of the policy. Besides national policies, schools should design CPD policies specifically for their respective schools, in line with national policies. Andragogy principles, Wenger’s social learning theory and Vygotsky’s perspective among others, should underpin the CPD framework. The study recommends an alternative CPD model which would utilise a combination of transmissive, transitional and transformative models and modes of delivery as lenses in meeting the CPD needs of teachers in the context of SEN. , Thesis (PhD) -- Faculty of Education, 2015
- Full Text:
- Date Issued: 2015-05
A framework for guiding the interdisciplinary design of mHealth intervention apps for physical activity behaviour change
- Authors: Thomson, Callie Deborah
- Date: 2022-04-06
- Subjects: Wireless communication systems in medical care , Exercise Health aspects , Behavior modification , Mobile apps , Medical care Technological innovations , Medical informatics , Health promotion Technological innovations , Application software Development , Design Science Research (DSR)
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/232193 , vital:49970 , DOI http://doi.org/10.21504/10962/232193
- Description: The global pandemic of noncommunicable diseases and its associated premature mortality rates and socioeconomic burden have led to increasingly intensified efforts towards designing and delivering health promotion interventions aimed at addressing the leading modifiable health risk behaviours, such as physical inactivity. Developing physical activity behaviour change interventions that target individuals at the dual intra-interpersonal socioecological levels of health promotion has become a key objective worldwide. Digital and mobile technology is revolutionising the ways in which health behaviour change interventions are delivered to individuals across the world, with mobile health applications (mHealth apps) increasingly recognised as a powerful means of promoting physical activity behaviour change. However, with the growth and opportunities of mHealth apps, come several design challenges. Key design challenges concern the integration of theory, the incorporation of evidence-based behaviour change techniques, the application of persuasive systems design principles, and the importance of multi- and interdisciplinary collaborative design, development and evaluation approaches. These key challenges influence the output product design and effectiveness of mHealth physical activity behaviour change intervention apps. There exists a paucity of approaches for guiding and supporting the multi- and interdisciplinary collaborative design, development and evaluation of mHealth physical activity behaviour change intervention apps. To address this gap, this research study proposes an Interdisciplinary mHealth App Design Framework, framed by a novel boundary object view. This view considers the diverse communities of practice, boundary objects and supporting artefacts, process activities, and knowledge sharing practices necessary and relevant to the design of effective mHealth physical activity behaviour change intervention apps. The framework’s development is guided by a Design Science Research (DSR) approach. Its core components are based on the findings of a critical theoretical analysis of twenty existing multi- and interdisciplinary digital health development approaches. Once developed, the framework is evaluated using a qualitative DSR linguistic interpretivist approach, with semi-structured interviews as the research instrument. The thematic analysis findings from interviews with thirty-one international academic researchers and industry practitioners informs the iterative modification and revision of an enhanced Interdisciplinary mHealth App Design Framework, constituting the main DSR artefact contribution of the research study. In addition, four theoretical contributions are made to the mHealth intervention app design body of knowledge, and a practical contribution is made through the provision of guideline recommendations for academics and industry practitioners. Methodological contributions are also made in terms of applying DSR, adopting a hybrid cognitive reasoning strategy, and employing a qualitative linguistic interpretivist approach to evaluation within a DSR project. , Thesis (PhD) -- Faculty of Commerce, Information Systems, 2022
- Full Text:
- Date Issued: 2022-04-06
- Authors: Thomson, Callie Deborah
- Date: 2022-04-06
- Subjects: Wireless communication systems in medical care , Exercise Health aspects , Behavior modification , Mobile apps , Medical care Technological innovations , Medical informatics , Health promotion Technological innovations , Application software Development , Design Science Research (DSR)
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/232193 , vital:49970 , DOI http://doi.org/10.21504/10962/232193
- Description: The global pandemic of noncommunicable diseases and its associated premature mortality rates and socioeconomic burden have led to increasingly intensified efforts towards designing and delivering health promotion interventions aimed at addressing the leading modifiable health risk behaviours, such as physical inactivity. Developing physical activity behaviour change interventions that target individuals at the dual intra-interpersonal socioecological levels of health promotion has become a key objective worldwide. Digital and mobile technology is revolutionising the ways in which health behaviour change interventions are delivered to individuals across the world, with mobile health applications (mHealth apps) increasingly recognised as a powerful means of promoting physical activity behaviour change. However, with the growth and opportunities of mHealth apps, come several design challenges. Key design challenges concern the integration of theory, the incorporation of evidence-based behaviour change techniques, the application of persuasive systems design principles, and the importance of multi- and interdisciplinary collaborative design, development and evaluation approaches. These key challenges influence the output product design and effectiveness of mHealth physical activity behaviour change intervention apps. There exists a paucity of approaches for guiding and supporting the multi- and interdisciplinary collaborative design, development and evaluation of mHealth physical activity behaviour change intervention apps. To address this gap, this research study proposes an Interdisciplinary mHealth App Design Framework, framed by a novel boundary object view. This view considers the diverse communities of practice, boundary objects and supporting artefacts, process activities, and knowledge sharing practices necessary and relevant to the design of effective mHealth physical activity behaviour change intervention apps. The framework’s development is guided by a Design Science Research (DSR) approach. Its core components are based on the findings of a critical theoretical analysis of twenty existing multi- and interdisciplinary digital health development approaches. Once developed, the framework is evaluated using a qualitative DSR linguistic interpretivist approach, with semi-structured interviews as the research instrument. The thematic analysis findings from interviews with thirty-one international academic researchers and industry practitioners informs the iterative modification and revision of an enhanced Interdisciplinary mHealth App Design Framework, constituting the main DSR artefact contribution of the research study. In addition, four theoretical contributions are made to the mHealth intervention app design body of knowledge, and a practical contribution is made through the provision of guideline recommendations for academics and industry practitioners. Methodological contributions are also made in terms of applying DSR, adopting a hybrid cognitive reasoning strategy, and employing a qualitative linguistic interpretivist approach to evaluation within a DSR project. , Thesis (PhD) -- Faculty of Commerce, Information Systems, 2022
- Full Text:
- Date Issued: 2022-04-06
A framework for the economic valuation of wetland rehabilitation: case studies from South Africa
- Authors: Browne, Michelle
- Date: 2022-04-06
- Subjects: Wetland restoration South Africa , Wetland management South Africa , Ecosystem management South Africa , Ecosystem services South Africa , Ecosystem management Economic aspects South Africa , Wetland restoration Cost effectiveness South Africa
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/263560 , vital:53638 , DOI 10.21504/10962/263561
- Description: Wetlands are recognised as having the potential to contribute long-term benefits to society; wetland rehabilitation is undertaken to recover these benefits in response to widespread wetland degradation. Increasingly, there have been calls to value the benefits of wetland rehabilitation to justify further investment. Such is the case in South Africa. Furthermore, recent global agendas and targets for ecosystem restoration, such as the declaration of the Decade of Restoration 2021-2030, suggest increasing pressure on governments to implement rehabilitation and imply a concomitant increase in decision-making regarding where and how to rehabilitate. In response to these information needs, this thesis explores the economic valuation of wetland rehabilitation through a narrative review of the foundational theory of values and valuation, a quantitative review of applied wetland rehabilitation economic valuation studies, and the evaluation of five wetland rehabilitation projects from South Africa. Projects were selected as case studies to represent various rehabilitation goals and explore different contexts (urban-rural; beneficiary groups), the timing of the evaluation (ex ante, ex post) and value types and valuation methods. The final chapter of the thesis integrates the case study experiences with the findings of the theoretical research components to propose a framework for the valuation of wetland rehabilitation, which can be applied in South Africa, and more generally, to further demonstrate the values of wetland rehabilitation, and as a tool to guide wetland rehabilitation decision-making. While initially grounded in mainstream economics, the research led into a number of fields including philosophy, social-ecological systems and social-ecological relations thinking, several environmental science areas and livelihood and human well-being frameworks. A deeper look into economic theory and history revealed an evolution of thinking on the meaning of ‘value’ and view of ‘nature’ and numerous critiques of standard neoclassical economics. From the insights gained and the case study experiences, this thesis argues that the neoclassical economic perspective, especially combined with a monetary metric, is too restrictive, and arguably too abstract in its assumptions of human behaviour and reliance on mathematical models, as an overarching framework for the valuation of wetland rehabilition. This is not to suggest that standard economic valuation concepts and methods cannot be useful, as the research case studies illustrated, but rather that wetland valuation must be approached from a value pluralism perspective. To this end, the proposed framework offers a way to think beyond, or in addition to, standard economic approaches in articulating the values of wetland rehabilitation. , Thesis (PhD) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-04-06
- Authors: Browne, Michelle
- Date: 2022-04-06
- Subjects: Wetland restoration South Africa , Wetland management South Africa , Ecosystem management South Africa , Ecosystem services South Africa , Ecosystem management Economic aspects South Africa , Wetland restoration Cost effectiveness South Africa
- Language: English
- Type: Academic theses , Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/263560 , vital:53638 , DOI 10.21504/10962/263561
- Description: Wetlands are recognised as having the potential to contribute long-term benefits to society; wetland rehabilitation is undertaken to recover these benefits in response to widespread wetland degradation. Increasingly, there have been calls to value the benefits of wetland rehabilitation to justify further investment. Such is the case in South Africa. Furthermore, recent global agendas and targets for ecosystem restoration, such as the declaration of the Decade of Restoration 2021-2030, suggest increasing pressure on governments to implement rehabilitation and imply a concomitant increase in decision-making regarding where and how to rehabilitate. In response to these information needs, this thesis explores the economic valuation of wetland rehabilitation through a narrative review of the foundational theory of values and valuation, a quantitative review of applied wetland rehabilitation economic valuation studies, and the evaluation of five wetland rehabilitation projects from South Africa. Projects were selected as case studies to represent various rehabilitation goals and explore different contexts (urban-rural; beneficiary groups), the timing of the evaluation (ex ante, ex post) and value types and valuation methods. The final chapter of the thesis integrates the case study experiences with the findings of the theoretical research components to propose a framework for the valuation of wetland rehabilitation, which can be applied in South Africa, and more generally, to further demonstrate the values of wetland rehabilitation, and as a tool to guide wetland rehabilitation decision-making. While initially grounded in mainstream economics, the research led into a number of fields including philosophy, social-ecological systems and social-ecological relations thinking, several environmental science areas and livelihood and human well-being frameworks. A deeper look into economic theory and history revealed an evolution of thinking on the meaning of ‘value’ and view of ‘nature’ and numerous critiques of standard neoclassical economics. From the insights gained and the case study experiences, this thesis argues that the neoclassical economic perspective, especially combined with a monetary metric, is too restrictive, and arguably too abstract in its assumptions of human behaviour and reliance on mathematical models, as an overarching framework for the valuation of wetland rehabilition. This is not to suggest that standard economic valuation concepts and methods cannot be useful, as the research case studies illustrated, but rather that wetland valuation must be approached from a value pluralism perspective. To this end, the proposed framework offers a way to think beyond, or in addition to, standard economic approaches in articulating the values of wetland rehabilitation. , Thesis (PhD) -- Faculty of Commerce, Economics and Economic History, 2022
- Full Text:
- Date Issued: 2022-04-06
A framework to improve social media as a communication tool in technical vocational education and training colleges in South Africa: a case of twitter.
- Nyamanhare, Sangudzayi Innocent
- Authors: Nyamanhare, Sangudzayi Innocent
- Date: 2021-02
- Subjects: Social media , Education, Higher , Universities and colleges
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/20495 , vital:46008
- Description: South Africa uses social media as a communication tool. The use of Twitter as a communication tool in Technical Vocational Education and Training Colleges (TVET) in South Africa is a crucial factor for efficient and effective communication between TVET College administration and stakeholders such as prospective students, students, prospective employers, prospective employees and the Twitter community which follow various Twitter accounts. Literature has found that TVET Colleges use Twitter in a monologic manner which promotes one-way information flow. Twitter is also used in a limited fashion and within silos within TVET Colleges that have incorporated this social media platform into their communication strategy. The main purpose of this research study was to develop a framework to improve social media as a communication tool in TVET Colleges in South Africa. The Social Media-Integration- Theory-Model was used as the theoretical framework to evaluate the use of Twitter in TVET Colleges in South Africa, thus enabling the development of critical success factors to improve the use of social media as a communication tool. The Interpretivist paradigm and qualitative research approach was chosen for this study. Netnography was used to collect the online data from Twitter that was analysed in the study. Data was collected from 36 TVET Colleges in South Africa that have a Twitter account over a one-year period (April 2019 – March 2020). After the data collection, content and thematic analysis were used to analyse the date. The study developed a framework from the analyses of tweets which incorporated the four constructs from the Social-Media-Integration-Theory-Model. The study also developed five critical success factors, namely, procuring and maintaining of ICT infrastructure; implementing a policy that guide the use of social networks for communication purposes in TVET Colleges; raising awareness on the use of Twitter as a tool for communication; intensive training to manage administration of Twitter accounts and appointing champions to promote Twitter as a communication tool in TVET Colleges. , Thesis (MCom) (Information Systems)-- University of Fort Hare, 2021
- Full Text:
- Date Issued: 2021-02
- Authors: Nyamanhare, Sangudzayi Innocent
- Date: 2021-02
- Subjects: Social media , Education, Higher , Universities and colleges
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/20495 , vital:46008
- Description: South Africa uses social media as a communication tool. The use of Twitter as a communication tool in Technical Vocational Education and Training Colleges (TVET) in South Africa is a crucial factor for efficient and effective communication between TVET College administration and stakeholders such as prospective students, students, prospective employers, prospective employees and the Twitter community which follow various Twitter accounts. Literature has found that TVET Colleges use Twitter in a monologic manner which promotes one-way information flow. Twitter is also used in a limited fashion and within silos within TVET Colleges that have incorporated this social media platform into their communication strategy. The main purpose of this research study was to develop a framework to improve social media as a communication tool in TVET Colleges in South Africa. The Social Media-Integration- Theory-Model was used as the theoretical framework to evaluate the use of Twitter in TVET Colleges in South Africa, thus enabling the development of critical success factors to improve the use of social media as a communication tool. The Interpretivist paradigm and qualitative research approach was chosen for this study. Netnography was used to collect the online data from Twitter that was analysed in the study. Data was collected from 36 TVET Colleges in South Africa that have a Twitter account over a one-year period (April 2019 – March 2020). After the data collection, content and thematic analysis were used to analyse the date. The study developed a framework from the analyses of tweets which incorporated the four constructs from the Social-Media-Integration-Theory-Model. The study also developed five critical success factors, namely, procuring and maintaining of ICT infrastructure; implementing a policy that guide the use of social networks for communication purposes in TVET Colleges; raising awareness on the use of Twitter as a tool for communication; intensive training to manage administration of Twitter accounts and appointing champions to promote Twitter as a communication tool in TVET Colleges. , Thesis (MCom) (Information Systems)-- University of Fort Hare, 2021
- Full Text:
- Date Issued: 2021-02
A framework to influence the behavioural intention of adults to monitor their health using gamification: a case of discovery vitality in East London, South Africa.
- Authors: Ntshona, Linda
- Date: 2021-09
- Subjects: Autonomy (Psychology) , Medical telematics. , Patient self-monitoring.
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/22242 , vital:52005
- Description: The epidemic of overweight or obesity conditions has become a public health concern in South Africa, and signifies major challenges of chronic diseases affecting the healthcare sector. Recent years have noted the increasing prevalence of gamification and development across all age groups. The rapid adoption and use of gamification as a tool to improve adult motivation and engagement when monitoring their health and wellness is an essential form of health intervention. Gamification allows its users to keep track of their health in real time and encourages an active healthy lifestyle behaviour. Research has found that there are factors that may inhibit the behavioural intention of adults to use gamification for health monitoring in the long term. These factors include cost or membership fees associated with gamification that uses Discovery Vitality and privacy concerns. The main aim of this research study was to develop a framework to influence the behavioural intention of adults to monitor their health through gamification making use of Discovery Vitality as the case study. The self-determination theory was used as the theoretical framework to ensure continuance usage of gamification for sustained health monitoring. A qualitative research approach was chosen for this study. The purposive sampling technique was selected to identify 20 adults between the ages of 18-59 years that are members of Discovery Vitality in East London, South Africa. Interviews were conducted with the 20 participants to identify the factors that will influence their behavioural intention to make use of gamification to monitor their health. After data collection, thematic analysis was used to analyse the data and the data provided by the participants was organised and summarised into relevant themes to answer the main research question. The study developed a framework which incorporated the four constructs of the self-determination theory, namely perceived autonomy, competence, relatedness and satisfaction of basic psychological needs for sustained health monitoring. The study also developed the five factors influencing the behavioural intention of adults to continue using gamification for sustained health monitoring. These factors are known as: broad appeal, applicability and accessibility through mobile technology and pervasive sensors, development and accomplishment, employment of creativity and feedback, and lastly social influence and relatedness. The recognition of weight loss, tracking and monitoring of physical activities and medication adherence was found to positively influence the behavioural intention of adults to continuosly use gamification to monitor their health. , Thesis (MCom) (Information Systems) -- University of Fort Hare, 2021
- Full Text:
- Date Issued: 2021-09
- Authors: Ntshona, Linda
- Date: 2021-09
- Subjects: Autonomy (Psychology) , Medical telematics. , Patient self-monitoring.
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/22242 , vital:52005
- Description: The epidemic of overweight or obesity conditions has become a public health concern in South Africa, and signifies major challenges of chronic diseases affecting the healthcare sector. Recent years have noted the increasing prevalence of gamification and development across all age groups. The rapid adoption and use of gamification as a tool to improve adult motivation and engagement when monitoring their health and wellness is an essential form of health intervention. Gamification allows its users to keep track of their health in real time and encourages an active healthy lifestyle behaviour. Research has found that there are factors that may inhibit the behavioural intention of adults to use gamification for health monitoring in the long term. These factors include cost or membership fees associated with gamification that uses Discovery Vitality and privacy concerns. The main aim of this research study was to develop a framework to influence the behavioural intention of adults to monitor their health through gamification making use of Discovery Vitality as the case study. The self-determination theory was used as the theoretical framework to ensure continuance usage of gamification for sustained health monitoring. A qualitative research approach was chosen for this study. The purposive sampling technique was selected to identify 20 adults between the ages of 18-59 years that are members of Discovery Vitality in East London, South Africa. Interviews were conducted with the 20 participants to identify the factors that will influence their behavioural intention to make use of gamification to monitor their health. After data collection, thematic analysis was used to analyse the data and the data provided by the participants was organised and summarised into relevant themes to answer the main research question. The study developed a framework which incorporated the four constructs of the self-determination theory, namely perceived autonomy, competence, relatedness and satisfaction of basic psychological needs for sustained health monitoring. The study also developed the five factors influencing the behavioural intention of adults to continue using gamification for sustained health monitoring. These factors are known as: broad appeal, applicability and accessibility through mobile technology and pervasive sensors, development and accomplishment, employment of creativity and feedback, and lastly social influence and relatedness. The recognition of weight loss, tracking and monitoring of physical activities and medication adherence was found to positively influence the behavioural intention of adults to continuosly use gamification to monitor their health. , Thesis (MCom) (Information Systems) -- University of Fort Hare, 2021
- Full Text:
- Date Issued: 2021-09
A framework to integrate social entrepreneurship into development planning in South Africa
- Authors: Nwauche, Sokeibelemaye
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/52982 , vital:44881
- Description: The thesis presents a framework to integrate social entrepreneurship (SE) into development planning in South Africa. Even though there is no consensus on a universally accepted definition of the term, there is concurrence that SE brings about social change that can influence the overall development of the community. In South Africa, SE is thus conceived of as one of the mechanisms for addressing the wicked and persistent socio-economic challenges that face the country. Social entrepreneurship occurs in areas such as education, health, skills development, youth programmes, rehabilitation, safety, food security, poverty, job creation, human rights activism, environmental issues, arts and culture, among others. However, it remains unclear how SE is integrated into the development planning and implementation processes. Questions of integrating SE into development planning are asked within the context of South Africa as a democratic developmental state that intervenes in the development process. It emphasises the mobilization of and engagement with all sectors towards the achievement of its development objectives as articulated in the national development plan (NDP). Also, government recognizes organizations in the social enterprise sector (such as NPOs and NPCs) as stakeholders and development partners who deliver relevant services towards the achievement of these development objectives. However, there is a lack of framework to mobilize and integrate the social enterprise sector and SE into the development planning process. Social entrepreneurship, therefore, tends to occur in insolation from other development programmes. , Thesis (PhD) -- Faculty of Business and Economic Sciences, School of Economics, Development and Tourism, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Nwauche, Sokeibelemaye
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/52982 , vital:44881
- Description: The thesis presents a framework to integrate social entrepreneurship (SE) into development planning in South Africa. Even though there is no consensus on a universally accepted definition of the term, there is concurrence that SE brings about social change that can influence the overall development of the community. In South Africa, SE is thus conceived of as one of the mechanisms for addressing the wicked and persistent socio-economic challenges that face the country. Social entrepreneurship occurs in areas such as education, health, skills development, youth programmes, rehabilitation, safety, food security, poverty, job creation, human rights activism, environmental issues, arts and culture, among others. However, it remains unclear how SE is integrated into the development planning and implementation processes. Questions of integrating SE into development planning are asked within the context of South Africa as a democratic developmental state that intervenes in the development process. It emphasises the mobilization of and engagement with all sectors towards the achievement of its development objectives as articulated in the national development plan (NDP). Also, government recognizes organizations in the social enterprise sector (such as NPOs and NPCs) as stakeholders and development partners who deliver relevant services towards the achievement of these development objectives. However, there is a lack of framework to mobilize and integrate the social enterprise sector and SE into the development planning process. Social entrepreneurship, therefore, tends to occur in insolation from other development programmes. , Thesis (PhD) -- Faculty of Business and Economic Sciences, School of Economics, Development and Tourism, 2021
- Full Text: false
- Date Issued: 2021-04
A framework to measure employee engagement at Stefanutti Stocks RPM Business Unit
- Authors: Maher, Theresa
- Date: 2021-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53315 , vital:45142
- Description: Work gratification and expectancies are of the utmost importance to the skilled workforce in the South African construction industry. The price paid for a demotivated workforce in this industry is very high and it leads to friction in the workplace, displeasing work outcomes and time delays. Furthermore it leads to increased incidences of theft,absenteeism and outputs that arebelow standard in terms of productivityand thequality of the work.In order to motivate the workforce in the construction industry,a day-by-day, step-by-step,hands-on approachmust be used. The aforesaid aids site managers to manage effectively and this in turn leads to an increase in production by way of enhanced productivity. Research shows that a correlationbetweenmotivation, excelling at work, improved productivity and fulfilment and expectancyexist. The reason why individuals act in a specific manner and choose not to act in a certain way can be directly linked totheirmotivation and engagement.As a member ofthe construction industry in South Africa, Stefanutti Stocks isseen as one of the leading construction groups. Employing more than 12 000 workers it has the ability to provide a wide variety of different scale projects for a host of clients in varied markets. The division concentrated on in this study is the Roads, Pipelines and Mining Services (RPM)Business Unit. The MD of the RPM Business Unit when starting at the company a few years ago came to the conclusion that in order for the RPM Business Unit to function optimally certain business inconsistencies regarding employee engagement needed to be addressed. Based on this he decided to use a consulting firm, AIM,to establish what the exact concernswere and what interventions wererequired to deal with them. ivInterventions facilitatedby AIM includedManagement Training Programmes and Workshops as well as one-on-one coaching sessions with selected individuals.The methodology used in this study was to measurethe current level of employee engagement subsequent toengagement interventionsconcludedby AIM.The approach used was the use of surveys distributed through AIM in conjunction with the RPM Business Unit’sHR Department. The surveys were distributed via Survey Monkey Software owned by the RPM Business Unit of Stefanutti Stocks. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMMU Business School, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Maher, Theresa
- Date: 2021-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53315 , vital:45142
- Description: Work gratification and expectancies are of the utmost importance to the skilled workforce in the South African construction industry. The price paid for a demotivated workforce in this industry is very high and it leads to friction in the workplace, displeasing work outcomes and time delays. Furthermore it leads to increased incidences of theft,absenteeism and outputs that arebelow standard in terms of productivityand thequality of the work.In order to motivate the workforce in the construction industry,a day-by-day, step-by-step,hands-on approachmust be used. The aforesaid aids site managers to manage effectively and this in turn leads to an increase in production by way of enhanced productivity. Research shows that a correlationbetweenmotivation, excelling at work, improved productivity and fulfilment and expectancyexist. The reason why individuals act in a specific manner and choose not to act in a certain way can be directly linked totheirmotivation and engagement.As a member ofthe construction industry in South Africa, Stefanutti Stocks isseen as one of the leading construction groups. Employing more than 12 000 workers it has the ability to provide a wide variety of different scale projects for a host of clients in varied markets. The division concentrated on in this study is the Roads, Pipelines and Mining Services (RPM)Business Unit. The MD of the RPM Business Unit when starting at the company a few years ago came to the conclusion that in order for the RPM Business Unit to function optimally certain business inconsistencies regarding employee engagement needed to be addressed. Based on this he decided to use a consulting firm, AIM,to establish what the exact concernswere and what interventions wererequired to deal with them. ivInterventions facilitatedby AIM includedManagement Training Programmes and Workshops as well as one-on-one coaching sessions with selected individuals.The methodology used in this study was to measurethe current level of employee engagement subsequent toengagement interventionsconcludedby AIM.The approach used was the use of surveys distributed through AIM in conjunction with the RPM Business Unit’sHR Department. The surveys were distributed via Survey Monkey Software owned by the RPM Business Unit of Stefanutti Stocks. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMMU Business School, 2021
- Full Text:
- Date Issued: 2021-04
A framework to prepare an information security awareness and training programme for a provincial government department in the Eastern Cape, South Africa.
- Authors: Potelwa, Zandile
- Date: 2022-03
- Subjects: Information technology--Security measures. , Employees--Training of. , Data encryption (Computer science)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/22289 , vital:52016
- Description: Provincial government departments do not have good audit reports on the information security section. The underlying issues are human factors associated with employee interaction with Information and Communication Technology (ICT). The problem to be addressed is how a provincial government needs to focus on employees’ information security awareness so that there is a residual improvement in information security culture to realise unqualified government audits for information security. A case study approach that focused on the provincial government departments in the Eastern Cape Province was used. The primary data was collected using semi-structured interviews containing questions related to information security awareness. Microsoft Teams was used to conduct online semi-structured interviews with 12 provincial government IT staff from two identified provincial departments. The data was analysed using thematic analysis and MS Excel for coding. The findings then were used to determine the outcome of this study which is the framework for preparing an information security awareness programme. The outcome of the study was achieved by condensing the themes that emerged in both the primary and secondary data. The framework was then explained as a way of recommending the importance of preparing information security awareness and training programmes in changing information security behaviour. The derived artefact of this study is an information security awareness framework that can be utilised in a provincial government department to increase the awareness of information security amongst government employees. The contribution of this study is a framework based on the Protection Motivation Theory and the Organisational Culture, to ascertain employees’ actions in relation to information risks and threats; requirements for preparing an information security awareness program for public sector employees and to determine the requirements to be considered when building information security culture in provincial government departments. The proposed framework can then be used to establish an information security culture within the government departments, which will mitigate security risks and threats. The significance of this study as per the constructs of ISA and training show that it can challenge thinking of how ISA can be prepared for not only provincial government but also for state-owned entities or local government. , Thesis (MCom) (Information Systems) -- University of Fort Hare, 2022
- Full Text:
- Date Issued: 2022-03
- Authors: Potelwa, Zandile
- Date: 2022-03
- Subjects: Information technology--Security measures. , Employees--Training of. , Data encryption (Computer science)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/22289 , vital:52016
- Description: Provincial government departments do not have good audit reports on the information security section. The underlying issues are human factors associated with employee interaction with Information and Communication Technology (ICT). The problem to be addressed is how a provincial government needs to focus on employees’ information security awareness so that there is a residual improvement in information security culture to realise unqualified government audits for information security. A case study approach that focused on the provincial government departments in the Eastern Cape Province was used. The primary data was collected using semi-structured interviews containing questions related to information security awareness. Microsoft Teams was used to conduct online semi-structured interviews with 12 provincial government IT staff from two identified provincial departments. The data was analysed using thematic analysis and MS Excel for coding. The findings then were used to determine the outcome of this study which is the framework for preparing an information security awareness programme. The outcome of the study was achieved by condensing the themes that emerged in both the primary and secondary data. The framework was then explained as a way of recommending the importance of preparing information security awareness and training programmes in changing information security behaviour. The derived artefact of this study is an information security awareness framework that can be utilised in a provincial government department to increase the awareness of information security amongst government employees. The contribution of this study is a framework based on the Protection Motivation Theory and the Organisational Culture, to ascertain employees’ actions in relation to information risks and threats; requirements for preparing an information security awareness program for public sector employees and to determine the requirements to be considered when building information security culture in provincial government departments. The proposed framework can then be used to establish an information security culture within the government departments, which will mitigate security risks and threats. The significance of this study as per the constructs of ISA and training show that it can challenge thinking of how ISA can be prepared for not only provincial government but also for state-owned entities or local government. , Thesis (MCom) (Information Systems) -- University of Fort Hare, 2022
- Full Text:
- Date Issued: 2022-03
A framework to test South Africa’s readiness for the fourth industrial revolution
- Olaitan, Olutoyin O., Issah, Moshood, Wayi, Ntombovuyo
- Authors: Olaitan, Olutoyin O. , Issah, Moshood , Wayi, Ntombovuyo
- Date: 2021
- Subjects: Industry 4.0 Article
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/11260/7153 , vital:53072 , xlink:href=" https://doi.org/10.4102/sajim.v23i1.1284"
- Description: Background: The fourth industrial revolution (4IR) is being touted as having the capacity to lift South Africa out of the challenges of poverty, unemployment and inequitable distribution of wealth. However, the state of the country’s readiness for the enabling technologies of the 4IR is in question. Objective: This article sought to investigate South Africa’s state of readiness for the technologies that enable the 4IR. The article proposed a framework which can be used to measure the country’s level of preparedness and implement the necessary processes to move the country into the 4IR era. Method: A detailed analysis of literature was carried out on the current and futuristic technologies employed by developed countries as they moved towards the 4IR. The fit – viability and the task – technology theories were employed to propose a framework to government for measuring its state of readiness for the 4IR in South Africa. Results: Based on findings from the literature study, the article proposed the 4IR readiness framework for government to measure and subsequently plans its response to the advent of 4IR technologies in the country. Conclusion: The framework revealed that South Africa has low technological capability, plummeting economic complexity and a fall in digital technological readiness. There is also a dearth of skilled workforce and technological infrastructure. It was recommended that government should focus on building and strengthening the resilience of both public and private institutions, investment in relevant 4IR education, infrastructural improvement, and promulgation and enforcement of legal framework to ensure security and privacy of data. Keywords: 4IR; task – technology; fit – viability; digital technology readiness; economic complexity
- Full Text:
- Date Issued: 2021
- Authors: Olaitan, Olutoyin O. , Issah, Moshood , Wayi, Ntombovuyo
- Date: 2021
- Subjects: Industry 4.0 Article
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/11260/7153 , vital:53072 , xlink:href=" https://doi.org/10.4102/sajim.v23i1.1284"
- Description: Background: The fourth industrial revolution (4IR) is being touted as having the capacity to lift South Africa out of the challenges of poverty, unemployment and inequitable distribution of wealth. However, the state of the country’s readiness for the enabling technologies of the 4IR is in question. Objective: This article sought to investigate South Africa’s state of readiness for the technologies that enable the 4IR. The article proposed a framework which can be used to measure the country’s level of preparedness and implement the necessary processes to move the country into the 4IR era. Method: A detailed analysis of literature was carried out on the current and futuristic technologies employed by developed countries as they moved towards the 4IR. The fit – viability and the task – technology theories were employed to propose a framework to government for measuring its state of readiness for the 4IR in South Africa. Results: Based on findings from the literature study, the article proposed the 4IR readiness framework for government to measure and subsequently plans its response to the advent of 4IR technologies in the country. Conclusion: The framework revealed that South Africa has low technological capability, plummeting economic complexity and a fall in digital technological readiness. There is also a dearth of skilled workforce and technological infrastructure. It was recommended that government should focus on building and strengthening the resilience of both public and private institutions, investment in relevant 4IR education, infrastructural improvement, and promulgation and enforcement of legal framework to ensure security and privacy of data. Keywords: 4IR; task – technology; fit – viability; digital technology readiness; economic complexity
- Full Text:
- Date Issued: 2021
A fraud investigation skills self-assessment framework for internal audit practitioners
- Authors: Labuschagne, Mario
- Date: 2023-04
- Subjects: fraud investigation , Auditing, Internal
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61465 , vital:70660
- Description: Globally incidents of fraud are on the increase, resulting in an expectation from users of internal audit services that internal auditors should accept responsibility for conducting fraud investigations. This expectation exists even though limited guidance pronouncements on how to conduct fraud investigations being available from the Institute of internal auditors (IIA) and internal auditors not always being equipped to conduct fraud investigations. This expectation also stretches beyond the current pronounced role and responsibilities of internal audit practitioners, according to the IIAs International Professional Practices Framework (IPPF) (hereafter, referred to as the Standards). Conducting fraud investigations without possessing the relevant knowledge and skills, introduces the risk that evidence collected may be considered inadmissible in a court of law. The research problem is stated as, “a dearth of adequate guidance pronouncements for internal audit practitioners exists, in respect of fraud investigations.” In response to the expectation, risk, and research problem, underpinned by the policeman theory and theory of inspired confidence, the primary research objective of the study was to develop a fraud investigation proficiency self-assessment framework for use by internal audit practitioners who are expected to conduct fraud investigations. The study’s research objectives were achieved by making use of an interpretivist research paradigm and a qualitative methodological approach. Data were collected through semi-structured interviews from authoritative internal auditors on the membership database of the Institute of Internal Auditors South Africa (IIASA). Findings confirmed the existence of an expectation gap and the lack of guidance contained in IIA guidance pronouncements and Standards. Developed from the findings, the thesis proposes a fraud investigation proficiency self-assessment framework. The proposed self-assessment framework lists 14 fraud investigation knowledge and skills measures in the form of statements that internal audit practitioners should use to assess their personal level of proficiency for conducting a fraud investigation. The results from the self-assessment should then be Page | vii used to guide an internal audit practitioner on whether to accept the responsibility for conducting a fraud investigation or to defer the investigation to a more proficient fraud investigator. The decision for accepting the responsibility to conduct a fraud investigation ultimately resides with the internal audit practitioner. The study concluded that an expectation from organisations exists for internal audit practitioners to conduct fraud investigations, even though limited guidance pronouncements are available to internal audit practitioners from the IIA for conducting fraud investigations. The study identified that the most prominent risk associated with a fraud investigation being conducted by a person lacking the required fraud investigation knowledge and skills was that of collected evidence being dismissed in a court of law and not being able to use the evidence against a perpetrator. It can, therefore, be recommended that internal audit practitioners should not conduct a fraud investigation if they lacked any of the proficiencies required. The study provides support for the development and use of the proposed fraud investigation proficiency self-assessment framework. , Thesis (PhD) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
- Authors: Labuschagne, Mario
- Date: 2023-04
- Subjects: fraud investigation , Auditing, Internal
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/61465 , vital:70660
- Description: Globally incidents of fraud are on the increase, resulting in an expectation from users of internal audit services that internal auditors should accept responsibility for conducting fraud investigations. This expectation exists even though limited guidance pronouncements on how to conduct fraud investigations being available from the Institute of internal auditors (IIA) and internal auditors not always being equipped to conduct fraud investigations. This expectation also stretches beyond the current pronounced role and responsibilities of internal audit practitioners, according to the IIAs International Professional Practices Framework (IPPF) (hereafter, referred to as the Standards). Conducting fraud investigations without possessing the relevant knowledge and skills, introduces the risk that evidence collected may be considered inadmissible in a court of law. The research problem is stated as, “a dearth of adequate guidance pronouncements for internal audit practitioners exists, in respect of fraud investigations.” In response to the expectation, risk, and research problem, underpinned by the policeman theory and theory of inspired confidence, the primary research objective of the study was to develop a fraud investigation proficiency self-assessment framework for use by internal audit practitioners who are expected to conduct fraud investigations. The study’s research objectives were achieved by making use of an interpretivist research paradigm and a qualitative methodological approach. Data were collected through semi-structured interviews from authoritative internal auditors on the membership database of the Institute of Internal Auditors South Africa (IIASA). Findings confirmed the existence of an expectation gap and the lack of guidance contained in IIA guidance pronouncements and Standards. Developed from the findings, the thesis proposes a fraud investigation proficiency self-assessment framework. The proposed self-assessment framework lists 14 fraud investigation knowledge and skills measures in the form of statements that internal audit practitioners should use to assess their personal level of proficiency for conducting a fraud investigation. The results from the self-assessment should then be Page | vii used to guide an internal audit practitioner on whether to accept the responsibility for conducting a fraud investigation or to defer the investigation to a more proficient fraud investigator. The decision for accepting the responsibility to conduct a fraud investigation ultimately resides with the internal audit practitioner. The study concluded that an expectation from organisations exists for internal audit practitioners to conduct fraud investigations, even though limited guidance pronouncements are available to internal audit practitioners from the IIA for conducting fraud investigations. The study identified that the most prominent risk associated with a fraud investigation being conducted by a person lacking the required fraud investigation knowledge and skills was that of collected evidence being dismissed in a court of law and not being able to use the evidence against a perpetrator. It can, therefore, be recommended that internal audit practitioners should not conduct a fraud investigation if they lacked any of the proficiencies required. The study provides support for the development and use of the proposed fraud investigation proficiency self-assessment framework. , Thesis (PhD) -- Faculty of Faculty of Business and Economic Sciences, 2023
- Full Text:
- Date Issued: 2023-04
A Functional Data Analysis approach to understand patterns imbedded within various data types
- Authors: Mangisa, Siphumlile
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Data mining
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/52091 , vital:43426
- Description: The thesis investigates the use of the novel Functional Data Analysis (FDA) methods in tackling various data types. Strong motivation is provided for the use of interesting opportunities offered by FDA to analyse not only economic data, but generally, data from any domain. The use of these methods is illustrated using three unique self-contained case-studies from econometrics. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Mangisa, Siphumlile
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Data mining
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/52091 , vital:43426
- Description: The thesis investigates the use of the novel Functional Data Analysis (FDA) methods in tackling various data types. Strong motivation is provided for the use of interesting opportunities offered by FDA to analyse not only economic data, but generally, data from any domain. The use of these methods is illustrated using three unique self-contained case-studies from econometrics. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-04
A gender responsive entrepreneurship development (GRED) model for Zimbabwe’s creative industry: : A focus on women sculptors
- Basiyawo, Patricia Heriette Mwedzi https://orcid.org/0000-0003-3889-177X
- Authors: Basiyawo, Patricia Heriette Mwedzi https://orcid.org/0000-0003-3889-177X
- Date: 2021-06
- Subjects: Entrepreneurship , Women-owned business enterprises , Women artists -- Zimbabwe
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21748 , vital:51748
- Description: This study was based on the GRED model and it sought to proffer solution to the challenges being faced by women sculptor entrepreneurs in Zimbabwe’s creative industry. The solution is set to help the policy makers, women in the creative industry and non-governmental organizations that work with women in the sculpting industry. The study’s main thrust was to create a gender responsive entrepreneurship development model for Zimbabwe’s creative industry. The entire study was anchored on determining the conceptual and contextual basis for a gender responsive approach to entrepreneurial development interventions, interrogating current government entrepreneurship approaches in Zimbabwe, determining important antecedents for entrepreneurship development that respond to gender dynamics within the creative industry in Zimbabwe and designing a GRED model for Zimbabwe’s creative industry basing on the findings of the research. The research employed qualitative research, through which focus group discussions, individual interviews, observations and document analysis were exploited for data collection. Armed with permission from UREC and the Ministries responsible for the creative industry, this study established that women in the creative industry were marginalized, poorly resourced and that government approaches and strategies were not being well implemented to benefit them. The study also revealed that most of the entrepreneurial activities were marred by corruption. The following tenets were recommended to foster viable women sculptors’ entrepreneurship: 50:50 representation, robust use of opportunities, business registration, forming of associations, funding, support, training, exhibitions, records keeping, monitoring and evaluation. The above tenets formed the basis of the constructed GRED model. , Thesis (PhD) -- Faculty of Management and Commerce, 2021
- Full Text:
- Date Issued: 2021-06
- Authors: Basiyawo, Patricia Heriette Mwedzi https://orcid.org/0000-0003-3889-177X
- Date: 2021-06
- Subjects: Entrepreneurship , Women-owned business enterprises , Women artists -- Zimbabwe
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21748 , vital:51748
- Description: This study was based on the GRED model and it sought to proffer solution to the challenges being faced by women sculptor entrepreneurs in Zimbabwe’s creative industry. The solution is set to help the policy makers, women in the creative industry and non-governmental organizations that work with women in the sculpting industry. The study’s main thrust was to create a gender responsive entrepreneurship development model for Zimbabwe’s creative industry. The entire study was anchored on determining the conceptual and contextual basis for a gender responsive approach to entrepreneurial development interventions, interrogating current government entrepreneurship approaches in Zimbabwe, determining important antecedents for entrepreneurship development that respond to gender dynamics within the creative industry in Zimbabwe and designing a GRED model for Zimbabwe’s creative industry basing on the findings of the research. The research employed qualitative research, through which focus group discussions, individual interviews, observations and document analysis were exploited for data collection. Armed with permission from UREC and the Ministries responsible for the creative industry, this study established that women in the creative industry were marginalized, poorly resourced and that government approaches and strategies were not being well implemented to benefit them. The study also revealed that most of the entrepreneurial activities were marred by corruption. The following tenets were recommended to foster viable women sculptors’ entrepreneurship: 50:50 representation, robust use of opportunities, business registration, forming of associations, funding, support, training, exhibitions, records keeping, monitoring and evaluation. The above tenets formed the basis of the constructed GRED model. , Thesis (PhD) -- Faculty of Management and Commerce, 2021
- Full Text:
- Date Issued: 2021-06
A gold–chitosan composite with low symmetry zinc phthalocyanine for enhanced singlet oxygen generation and improved photodynamic therapy activity
- Dube, Edith, Oluwole, David O, Prinsloo, Earl, Nyokong, Tebello
- Authors: Dube, Edith , Oluwole, David O , Prinsloo, Earl , Nyokong, Tebello
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/233397 , vital:50087 , xlink:href="https://doi.org/10.1039/C8NJ00801A"
- Description: Novel zinc(II) 3-(4-((3,17,23-tris(4-(benzo[d]thiazol-2-yl)phenoxy)phthalocyanine-9-yl)oxy)phenyl)propanoic acid (complex 3) was synthesised. Complex 3 was subsequently reacted with gold nanoparticles (AuNPs), chitosan (CT) and a gold–chitosan (AuCT) hybrid to form 3-AuNPs, 3-CT and 3-AuCT, respectively. The conjugates afforded a decrease in fluorescence quantum yield with a corresponding increase in the triplet and singlet quantum yields compared to complex 3. The in vitro dark cytotoxicity and photodynamic therapy activity (PDT) of complex 3 and 3-AuCT composites were investigated against epithelial breast cancer cells (MCF-7) with both the samples showing minimum dark cytotoxicity. They both accounted for a cell viability of ≥90% at a concentration of ≤59.2 μg mL−1. 3-AuCT showed better PDT activity (compared to 3 alone) with less than 50% viable cells at a concentration of ≥29.6 μg mL−1 making it potentially applicable for PDT. On the other hand, AuCT displayed some activity against cancer cells, probably due to photothermal activity since gold is a light absorber, however it had more than 50% viable cells at a concentration of ≤59.2 μg mL−1.
- Full Text:
- Date Issued: 2018
- Authors: Dube, Edith , Oluwole, David O , Prinsloo, Earl , Nyokong, Tebello
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/233397 , vital:50087 , xlink:href="https://doi.org/10.1039/C8NJ00801A"
- Description: Novel zinc(II) 3-(4-((3,17,23-tris(4-(benzo[d]thiazol-2-yl)phenoxy)phthalocyanine-9-yl)oxy)phenyl)propanoic acid (complex 3) was synthesised. Complex 3 was subsequently reacted with gold nanoparticles (AuNPs), chitosan (CT) and a gold–chitosan (AuCT) hybrid to form 3-AuNPs, 3-CT and 3-AuCT, respectively. The conjugates afforded a decrease in fluorescence quantum yield with a corresponding increase in the triplet and singlet quantum yields compared to complex 3. The in vitro dark cytotoxicity and photodynamic therapy activity (PDT) of complex 3 and 3-AuCT composites were investigated against epithelial breast cancer cells (MCF-7) with both the samples showing minimum dark cytotoxicity. They both accounted for a cell viability of ≥90% at a concentration of ≤59.2 μg mL−1. 3-AuCT showed better PDT activity (compared to 3 alone) with less than 50% viable cells at a concentration of ≥29.6 μg mL−1 making it potentially applicable for PDT. On the other hand, AuCT displayed some activity against cancer cells, probably due to photothermal activity since gold is a light absorber, however it had more than 50% viable cells at a concentration of ≤59.2 μg mL−1.
- Full Text:
- Date Issued: 2018