A corporate strategy framework to increase financial performance in Zimbabwean firms
- Authors: Matanhire, Farai
- Date: 2021-12
- Subjects: Business enterprises -- Zimbabwe -- Finance -- Management
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54047 , vital:46206
- Description: The world over, contrasting company performance by firms in the same operating environment and industry has been a conundrum. Firms do not operate in a vacuum, but within spheres where various factors around them affect their performances. To that end, heterogeneous firm performance is a common phenomenon that is influenced by a number of factors, including how management develops appropriate selections, trade-offs and calculated choices to be dissimilar from other players in the market in order to gain a competitive advantage that will lead to superior financial performance. A collection of actions that management puts in place to out-perform competing firms in order to achieve greater profitability is called corporate strategy. These plans of action include the effective management of the socio-political and cultural institutions in a manner beneficial to the organisation. This plan of action on the socio-political and cultural institutions gives rise to institutional strategic management. The formulation of corporate strategies is done through a process that involves a set of rules, ideas or beliefs called frameworks, which include the Resource Based Strategy Framework, Business Models, Innovation and Institutionalism. Research has shown that the financial performance of firms is driven by a number of factors, namely corporate strategy, industry competitiveness, operating environment and core competencies amongst other factors. There is a plethora of determinants for the performance of firms and the complexity in the current business environment that has contributed to some models becoming obsolete while others remain relevant. It is against this background that the primary research objective of establishing a corporate strategy framework used by Zimbabwean firms to increase financial performance was developed. To answer this primary research objective, secondary objectives to (a) determine the impact of the Resource-Based Strategy Framework on the financial performance of firms in Zimbabwe; (b) ascertain the impact of business models using Porter’s Generic Strategies Framework on the financial performance of firms in Zimbabwe; (c) determine the impact of the Institutional Strategy Framework on the financial performance of firms in Zimbabwe; (d) determine the impact of the Innovation Strategy Framework on the financial performance of firms in Zimbabwe; (e) establish the joint impact of the Resource-Based Strategy framework, Business Models, Institutional Strategies and Innovation Strategies on the financial performance of firms in Zimbabwe; and (f) establish other corporate strategy frameworks used by Zimbabwean firms to increase financial performance, were developed. The study population was the Zimbabwe Stock Exchange (ZSE) listed firms that fairly represented all the major operating sectors and firms in Zimbabwe. The researcher adopted a mixed research design incorporating both qualitative and quantitative methods in order to best reflect the critical strategy elements that were increasing financial performance in Zimbabwean firms. Qualitative data was collected through interviews conducted with executive managers of ZSE firms. Triangulation was achieved by comparing and contrasting data collected from interviews to secondary data extracted from websites, reports and audited financial statements. Both qualitative and quantitative data analysis was done using RQDA, an open-source computer-aided data software. ZSE listed firms were categorised into the five sectors of basic materials, consumer goods, consumer services, financial services and industrials. These firms were further categorised into excellent, medium, poor and very poor performers. Collected data was analysed to establish strategies that were used by excellent, medium, poor and very poor firms to see if they were using the same and figure out the impact of the various strategy frameworks on the financial performance on Zimbabwean firms. Data was analysed using univariate, ordinal and binomial logistics regression analysis. These data analysis models confirmed that RBS was a significant driver of financial performance for ZSE listed firms when all the strategy frameworks were combined. However, evaluating the impact of each strategy framework separately showed that all the frameworks were significant in driving financial performance, with the exception of the Institutional Strategy Framework. All the firms were doing more or less the same on Institutional Strategy Framework (ISF), hence it could not be a predictor of financial performance under the regression models. However, the ISF had a high score on univariate evaluation method. It is against this background that the study recommended the use of the Resource Based Strategy Framework (RBS) in pursuit of increasing financial performance of firms as this has been empirically found to have a significant impact on the financial performance of firms in Zimbabwe. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Matanhire, Farai
- Date: 2021-12
- Subjects: Business enterprises -- Zimbabwe -- Finance -- Management
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54047 , vital:46206
- Description: The world over, contrasting company performance by firms in the same operating environment and industry has been a conundrum. Firms do not operate in a vacuum, but within spheres where various factors around them affect their performances. To that end, heterogeneous firm performance is a common phenomenon that is influenced by a number of factors, including how management develops appropriate selections, trade-offs and calculated choices to be dissimilar from other players in the market in order to gain a competitive advantage that will lead to superior financial performance. A collection of actions that management puts in place to out-perform competing firms in order to achieve greater profitability is called corporate strategy. These plans of action include the effective management of the socio-political and cultural institutions in a manner beneficial to the organisation. This plan of action on the socio-political and cultural institutions gives rise to institutional strategic management. The formulation of corporate strategies is done through a process that involves a set of rules, ideas or beliefs called frameworks, which include the Resource Based Strategy Framework, Business Models, Innovation and Institutionalism. Research has shown that the financial performance of firms is driven by a number of factors, namely corporate strategy, industry competitiveness, operating environment and core competencies amongst other factors. There is a plethora of determinants for the performance of firms and the complexity in the current business environment that has contributed to some models becoming obsolete while others remain relevant. It is against this background that the primary research objective of establishing a corporate strategy framework used by Zimbabwean firms to increase financial performance was developed. To answer this primary research objective, secondary objectives to (a) determine the impact of the Resource-Based Strategy Framework on the financial performance of firms in Zimbabwe; (b) ascertain the impact of business models using Porter’s Generic Strategies Framework on the financial performance of firms in Zimbabwe; (c) determine the impact of the Institutional Strategy Framework on the financial performance of firms in Zimbabwe; (d) determine the impact of the Innovation Strategy Framework on the financial performance of firms in Zimbabwe; (e) establish the joint impact of the Resource-Based Strategy framework, Business Models, Institutional Strategies and Innovation Strategies on the financial performance of firms in Zimbabwe; and (f) establish other corporate strategy frameworks used by Zimbabwean firms to increase financial performance, were developed. The study population was the Zimbabwe Stock Exchange (ZSE) listed firms that fairly represented all the major operating sectors and firms in Zimbabwe. The researcher adopted a mixed research design incorporating both qualitative and quantitative methods in order to best reflect the critical strategy elements that were increasing financial performance in Zimbabwean firms. Qualitative data was collected through interviews conducted with executive managers of ZSE firms. Triangulation was achieved by comparing and contrasting data collected from interviews to secondary data extracted from websites, reports and audited financial statements. Both qualitative and quantitative data analysis was done using RQDA, an open-source computer-aided data software. ZSE listed firms were categorised into the five sectors of basic materials, consumer goods, consumer services, financial services and industrials. These firms were further categorised into excellent, medium, poor and very poor performers. Collected data was analysed to establish strategies that were used by excellent, medium, poor and very poor firms to see if they were using the same and figure out the impact of the various strategy frameworks on the financial performance on Zimbabwean firms. Data was analysed using univariate, ordinal and binomial logistics regression analysis. These data analysis models confirmed that RBS was a significant driver of financial performance for ZSE listed firms when all the strategy frameworks were combined. However, evaluating the impact of each strategy framework separately showed that all the frameworks were significant in driving financial performance, with the exception of the Institutional Strategy Framework. All the firms were doing more or less the same on Institutional Strategy Framework (ISF), hence it could not be a predictor of financial performance under the regression models. However, the ISF had a high score on univariate evaluation method. It is against this background that the study recommended the use of the Resource Based Strategy Framework (RBS) in pursuit of increasing financial performance of firms as this has been empirically found to have a significant impact on the financial performance of firms in Zimbabwe. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
A critical exploration of the attitudes towards and knowledge of natural resource management amongst first-year Natural Resource Management students
- Authors: Jooste, Eileen
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's , text
- Identifier: http://hdl.handle.net/10948/53666 , vital:45688
- Description: Available literature suggests that there is a need to gain more understanding of what students’ environmental attitudes and knowledge are and how they are developed by education systems. Education, in general, plays an important role in students’ attitudes and their knowledge of the world around them. It can shape students’ awareness of their natural environment and contribute to their understanding of environmental issues. Education can also strengthen students’ critical thinking, build awareness, stimulate problem solving, and promote sustainable practices. It has the potential to empower students to address global challenges from their own diverse perspectives and prepare them to uphold the economy. Education can improve and maintain societal wellbeing and can help students to maintain the natural environment, along with achieving sustainable development. Environmental education, specifically, can play a big role in how students deal with the natural environment. The primary aim of this qualitative research study was to examine first-year students’ environmental attitudes and knowledge in the School of Natural Resource Management at the Nelson Mandela University George Campus, South Africa. First-year students’ environmental attitudes and knowledge were examined as they entered the university, and then again at the end of the first semester once they had completed a module in ecology. More specifically, at the outset of the research the objectives were (1) to establish an understanding of the baseline environmental attitudes and knowledge of first-year students who were undertaking three ecological modules being offered by the School of Natural Resource Management; (2) to assess the changes in the first-year students’ environmental attitudes and knowledge, using a post-intervention strategy; (3) to understand what type of teaching approaches were used by the lecturers teaching the ecological modules; and (4) to evaluate how the teaching approaches of the lecturers influenced the baseline environmental attitudes and knowledge of the student group. This research took place in the midst of the Corona Virus pandemic, which had significantly influenced the teaching and learning environment. Multiple education systems, including those of the Nelson Mandela University George Campus, had to rapidly transition to online teaching and learning. So, although unplanned for, this research could not ignore the rapid transition to online teaching and learning and the role it played in shaping the first-year School of Natural Resource Management students’ environmental attitudes and knowledge. It also impacted the teaching approaches of the environmental lecturers. An additional objective in response to the rapid transition to online teaching and learning was, therefore, added: (5) to understand the experiences of the first-year School of Natural Resource Management students and the three environmental lecturers who had to rapidly transition to online teaching and learning. Data was collected via questionnaires and semi-structured interviews with students and staff in the School of Natural Resource Management at Nelson Mandela University George Campus within three different natural resource management programs, namely Agriculture, Nature Conservation, and Forestry. Baseline questionnaires were conducted with 107 students for a baseline assessment as the students entered the university. An online post-intervention questionnaire was conducted with 33 of the initial group of students at the end of the semester for a post-intervention assessment. In-depth semi-structured interviews were conducted with three environmental lectures before they taught their three ecology modules in each of the programs. Additional online semi-structured interviews were also done with the same three environmental lectures after the rapid transition to online teaching and learning took place. The significant findings from this research were analyzed and discussed. This included the baseline environmental attitudes and knowledge of the student body upon arrival at the university and the changes in their environmental attitudes and knowledge after they were exposed to the ecology modules taught in each of the programs. The discussion also included the teaching approaches adopted by the environmental lecturers and the influence their teaching approaches had on the students’ environmental attitudes and knowledge. In addition, the results shed light on the experiences of students and lecturers during the rapid transition to online teaching and learning. The main conclusions reached were that the first-year School of Natural Resource Management students did not have a deep understanding of ecological concepts prior to arriving at university, but they did show a concern for the natural environment. Their lack of understanding was reduced as the students progressed with the ecology module. A greater understanding resulted in a change in students’ perspectives on the ecological module, their program, and the industry they were preparing to enter after being exposed to the ecology module. The environmental lecturers’ teaching approaches contributed to improving the students’ environmental attitudes and knowledge. When it came to the rapid transition to online teaching and learning, both the first-year School of Natural Resource Management students and environmental lecturers experienced benefits and challenges. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Jooste, Eileen
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's , text
- Identifier: http://hdl.handle.net/10948/53666 , vital:45688
- Description: Available literature suggests that there is a need to gain more understanding of what students’ environmental attitudes and knowledge are and how they are developed by education systems. Education, in general, plays an important role in students’ attitudes and their knowledge of the world around them. It can shape students’ awareness of their natural environment and contribute to their understanding of environmental issues. Education can also strengthen students’ critical thinking, build awareness, stimulate problem solving, and promote sustainable practices. It has the potential to empower students to address global challenges from their own diverse perspectives and prepare them to uphold the economy. Education can improve and maintain societal wellbeing and can help students to maintain the natural environment, along with achieving sustainable development. Environmental education, specifically, can play a big role in how students deal with the natural environment. The primary aim of this qualitative research study was to examine first-year students’ environmental attitudes and knowledge in the School of Natural Resource Management at the Nelson Mandela University George Campus, South Africa. First-year students’ environmental attitudes and knowledge were examined as they entered the university, and then again at the end of the first semester once they had completed a module in ecology. More specifically, at the outset of the research the objectives were (1) to establish an understanding of the baseline environmental attitudes and knowledge of first-year students who were undertaking three ecological modules being offered by the School of Natural Resource Management; (2) to assess the changes in the first-year students’ environmental attitudes and knowledge, using a post-intervention strategy; (3) to understand what type of teaching approaches were used by the lecturers teaching the ecological modules; and (4) to evaluate how the teaching approaches of the lecturers influenced the baseline environmental attitudes and knowledge of the student group. This research took place in the midst of the Corona Virus pandemic, which had significantly influenced the teaching and learning environment. Multiple education systems, including those of the Nelson Mandela University George Campus, had to rapidly transition to online teaching and learning. So, although unplanned for, this research could not ignore the rapid transition to online teaching and learning and the role it played in shaping the first-year School of Natural Resource Management students’ environmental attitudes and knowledge. It also impacted the teaching approaches of the environmental lecturers. An additional objective in response to the rapid transition to online teaching and learning was, therefore, added: (5) to understand the experiences of the first-year School of Natural Resource Management students and the three environmental lecturers who had to rapidly transition to online teaching and learning. Data was collected via questionnaires and semi-structured interviews with students and staff in the School of Natural Resource Management at Nelson Mandela University George Campus within three different natural resource management programs, namely Agriculture, Nature Conservation, and Forestry. Baseline questionnaires were conducted with 107 students for a baseline assessment as the students entered the university. An online post-intervention questionnaire was conducted with 33 of the initial group of students at the end of the semester for a post-intervention assessment. In-depth semi-structured interviews were conducted with three environmental lectures before they taught their three ecology modules in each of the programs. Additional online semi-structured interviews were also done with the same three environmental lectures after the rapid transition to online teaching and learning took place. The significant findings from this research were analyzed and discussed. This included the baseline environmental attitudes and knowledge of the student body upon arrival at the university and the changes in their environmental attitudes and knowledge after they were exposed to the ecology modules taught in each of the programs. The discussion also included the teaching approaches adopted by the environmental lecturers and the influence their teaching approaches had on the students’ environmental attitudes and knowledge. In addition, the results shed light on the experiences of students and lecturers during the rapid transition to online teaching and learning. The main conclusions reached were that the first-year School of Natural Resource Management students did not have a deep understanding of ecological concepts prior to arriving at university, but they did show a concern for the natural environment. Their lack of understanding was reduced as the students progressed with the ecology module. A greater understanding resulted in a change in students’ perspectives on the ecological module, their program, and the industry they were preparing to enter after being exposed to the ecology module. The environmental lecturers’ teaching approaches contributed to improving the students’ environmental attitudes and knowledge. When it came to the rapid transition to online teaching and learning, both the first-year School of Natural Resource Management students and environmental lecturers experienced benefits and challenges. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
A data-driven decision-making model for the third-party logistics industry in Africa
- Authors: Moyo, Faith
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53875 , vital:46022
- Description: Third-party logistics (3PL) providers have continued to be key players in the supply chain network and have witnessed a growth in the usage of information technology. This growth has enhanced the volume of structured and unstructured data that is collected at a high velocity, and is of rich variety, sometimes described as “Big Data”. Leaders in the 3PL industry are constantly seeking to effectively and efficiently mature their abilities to exploit this data to gain business value through data-driven decision-making (DDDM). DDDM helps the leaders to reduce the reliance they place on observations and intuition to make crucial business decisions in a volatile business environment. The aim of this research was to develop a prescriptive model for DDDM in 3PLs. The model consists of iterative elements that prescribe guidelines to decision-makers in the 3PL industry on how to adopt DDDM. A literature review of existing theoretical frameworks and models for DDDM was conducted to determine the extent to which they contribute towards DDDM for 3PLs. The Design-Science Research Methodology (DSRM) was followed to address the aim of the research and applied to pragmatically and iteratively develop and evaluate the artefact (the model for DDDM) in the real-world context of a 3PL. The literature findings revealed that the challenges with DDDM in organisations include three main categories of challenges related to data quality, data management, vision and capabilities. Once the challenges with DDDM were established, a prescriptive model was designed and developed for DDDM in 3PLs. Qualitative data was collected from semi-structured interviews to gain an understanding of the problems and possible solutions in the real-world context of 3PLs. An As-Is Analysis in the real-world case 3PL company confirmed the challenges identified in literature, and that data is still used in the 3PL company for descriptive and diagnostic analytics to aid with the decision-making processes. This highlights that there is still room for maturity into using data for predictive and prescriptive analytics that will, in turn, improve the decision-making process. An improved second version of the model was demonstrated to the participants (the targeted users), who had the opportunity to evaluate the model. The findings revealed that the model provided clear guidelines on how to make data-driven decisions and that the feedback loop and the data culture aspects highlighted in the design were some of the important features of the model. Some improvements were suggested by participants. A field study of three data analytics tools was conducted to identify the advantages and disadvantages of each as well as to highlight the status of DDDM at the real-world case 3PL. The limitations of the second version of the model, together with the recommendations from the participants were used to inform the improved and revised third version of the model. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Moyo, Faith
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53875 , vital:46022
- Description: Third-party logistics (3PL) providers have continued to be key players in the supply chain network and have witnessed a growth in the usage of information technology. This growth has enhanced the volume of structured and unstructured data that is collected at a high velocity, and is of rich variety, sometimes described as “Big Data”. Leaders in the 3PL industry are constantly seeking to effectively and efficiently mature their abilities to exploit this data to gain business value through data-driven decision-making (DDDM). DDDM helps the leaders to reduce the reliance they place on observations and intuition to make crucial business decisions in a volatile business environment. The aim of this research was to develop a prescriptive model for DDDM in 3PLs. The model consists of iterative elements that prescribe guidelines to decision-makers in the 3PL industry on how to adopt DDDM. A literature review of existing theoretical frameworks and models for DDDM was conducted to determine the extent to which they contribute towards DDDM for 3PLs. The Design-Science Research Methodology (DSRM) was followed to address the aim of the research and applied to pragmatically and iteratively develop and evaluate the artefact (the model for DDDM) in the real-world context of a 3PL. The literature findings revealed that the challenges with DDDM in organisations include three main categories of challenges related to data quality, data management, vision and capabilities. Once the challenges with DDDM were established, a prescriptive model was designed and developed for DDDM in 3PLs. Qualitative data was collected from semi-structured interviews to gain an understanding of the problems and possible solutions in the real-world context of 3PLs. An As-Is Analysis in the real-world case 3PL company confirmed the challenges identified in literature, and that data is still used in the 3PL company for descriptive and diagnostic analytics to aid with the decision-making processes. This highlights that there is still room for maturity into using data for predictive and prescriptive analytics that will, in turn, improve the decision-making process. An improved second version of the model was demonstrated to the participants (the targeted users), who had the opportunity to evaluate the model. The findings revealed that the model provided clear guidelines on how to make data-driven decisions and that the feedback loop and the data culture aspects highlighted in the design were some of the important features of the model. Some improvements were suggested by participants. A field study of three data analytics tools was conducted to identify the advantages and disadvantages of each as well as to highlight the status of DDDM at the real-world case 3PL. The limitations of the second version of the model, together with the recommendations from the participants were used to inform the improved and revised third version of the model. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
A framework for transmitting and entrenching values in indigenous black South African family businesses
- Authors: Kupangwa, Welcome
- Date: 2021-12
- Subjects: Family-owned business enterprises -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53991 , vital:46171
- Description: Family businesses are the predominant form of business globally and their importance to the economies of countries and job creation are often highlighted. In comparison to non-family businesses, family businesses are often described as having several unique characteristics such as a long-term orientation, being more emotions-laden, and having multiple family generations work in the business. Family businesses are also more deeply rooted in their cultures and values than non-family businesses are, and it is these values that contribute to their uniqueness and longevity. The dominant cultures and values found in family businesses are often associated with those of the founders and their families, and most founders want successive generations to run their family businesses according to established traditions and core values. Despite their importance in both developed and developing economies, family businesses face significant challenges to survive and prosper across generations. One such challenge involves the transmission of values from business founders and/or current leaders to the next generation of family members. If these values are not transmitted to and shared by the next generation, and not entrenched into the functions and processes of their family business, the functioning of the family and the family business are at risk. Existing research on values in family businesses reveals limited knowledge of values transmission to the next generation of family members. In addition, questions remain unanswered as to how values are institutionalised and entrenched into family businesses, and how these values contribute to their longevity and success. Given the need to understand the role of values in the transgenerational success of family businesses, many research calls have been made to investigate the nature of values, values transmission and values entrenchment among family businesses, including those in developing countries. In response to these calls the primary objective of this study was to provide a framework for explaining how values are transmitted among indigenous Black South African business owning families and how these values are entrenched into their family businesses. Investigating values in the context of indigenous Black South African business owning families highlights the influence of indigenous culture on the transmission and entrenchment processes. This study is positioned in the interpretivism and the postmodernism research paradigm. Both deductive and inductive reasoning to theory development and qualitative methodological approach were adopted to create new and richer understandings and interpretations of the phenomena under investigation. Utilising a multiple and descriptive case study methodology, data was collected from seven indigenous Black South African family businesses through semi-structured interviews. To corroborate the interview findings, observations, document analysis and field notes were also used for data collection, which was then analysed utilising reflexive thematic analysis. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Kupangwa, Welcome
- Date: 2021-12
- Subjects: Family-owned business enterprises -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53991 , vital:46171
- Description: Family businesses are the predominant form of business globally and their importance to the economies of countries and job creation are often highlighted. In comparison to non-family businesses, family businesses are often described as having several unique characteristics such as a long-term orientation, being more emotions-laden, and having multiple family generations work in the business. Family businesses are also more deeply rooted in their cultures and values than non-family businesses are, and it is these values that contribute to their uniqueness and longevity. The dominant cultures and values found in family businesses are often associated with those of the founders and their families, and most founders want successive generations to run their family businesses according to established traditions and core values. Despite their importance in both developed and developing economies, family businesses face significant challenges to survive and prosper across generations. One such challenge involves the transmission of values from business founders and/or current leaders to the next generation of family members. If these values are not transmitted to and shared by the next generation, and not entrenched into the functions and processes of their family business, the functioning of the family and the family business are at risk. Existing research on values in family businesses reveals limited knowledge of values transmission to the next generation of family members. In addition, questions remain unanswered as to how values are institutionalised and entrenched into family businesses, and how these values contribute to their longevity and success. Given the need to understand the role of values in the transgenerational success of family businesses, many research calls have been made to investigate the nature of values, values transmission and values entrenchment among family businesses, including those in developing countries. In response to these calls the primary objective of this study was to provide a framework for explaining how values are transmitted among indigenous Black South African business owning families and how these values are entrenched into their family businesses. Investigating values in the context of indigenous Black South African business owning families highlights the influence of indigenous culture on the transmission and entrenchment processes. This study is positioned in the interpretivism and the postmodernism research paradigm. Both deductive and inductive reasoning to theory development and qualitative methodological approach were adopted to create new and richer understandings and interpretations of the phenomena under investigation. Utilising a multiple and descriptive case study methodology, data was collected from seven indigenous Black South African family businesses through semi-structured interviews. To corroborate the interview findings, observations, document analysis and field notes were also used for data collection, which was then analysed utilising reflexive thematic analysis. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
A spatial assessment of riparian vegetation density and implications for streambank erosion in relation to land tenure in the Mgwalana Catchment, Eastern Cape Province, South Africa
- Authors: Maxama, Asakhile
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53864 , vital:46026
- Description: Riparian vegetation provides an array of various ecosystem functions and has significantly shaped the conditions of catchments. It has strong controls on fluvial geomorphology and erosion processes. The Mgwalana catchment has been intensively studied over the years and the current environmental condition of the study has been linked to land use history. The catchment has been subjected to land use/cover changes (LUCC) over the years. However, spatial variations in riparian vegetation, their implications for stream bank stability and the contribution of land tenure systems to stream channel degradation are poorly understood. The study sought to assess the implications of the spatial variations in riparian vegetation density for stream bank erosion in relation to land tenure on a catchment scale. Land tenure units comprising the catchment of study are traditional and betterment villages (communal lands), and former white commercial farms. A three-pronged approach using GIS and remote sensing, field investigations and laboratory procedures for soil analysis was employed in this study. Variations of riparian vegetation density in the catchment were mapped using ArcGIS for the two land tenure units to assess the spatial variations of riparian density along stream reaches and to determine the spatial relationship between land tenure units and riparian vegetation diminution. Other mapped shape files include sediment accumulation zones to analyse the spatial relationship between riparian vegetation density and sediment sinks. LUCC classification and analysis of the Normalized Difference Vegetation Index (NDVI) were carried out in IDRISI Selva, using Landsat 8 TM imagery of 2018 to represent the current spatial riparian vegetation variations in the catchment. Field investigations were conducted to determine the coupling among hillslope gully erosion, riparian vegetation density and sink areas; and to assess physical characteristics of soil. This would permit an assessment of the implications of riparian vegetation for stream bank erosion and sediment accumulation within the tenure units. Soil samples were taken from scantily and densely vegetated stream reaches, as well as measurements of channel widths and depths. Analyses of soil physical properties viz; grain size distribution, bulk density, soil texture and aggregate stability were done. Results demonstrated that a sparse riparian vegetation distribution was consistent with the communal villages, confined to the upper catchment area. Dense riparian vegetation distribution was consistent with former commercial farms in the lower catchment area. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Maxama, Asakhile
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53864 , vital:46026
- Description: Riparian vegetation provides an array of various ecosystem functions and has significantly shaped the conditions of catchments. It has strong controls on fluvial geomorphology and erosion processes. The Mgwalana catchment has been intensively studied over the years and the current environmental condition of the study has been linked to land use history. The catchment has been subjected to land use/cover changes (LUCC) over the years. However, spatial variations in riparian vegetation, their implications for stream bank stability and the contribution of land tenure systems to stream channel degradation are poorly understood. The study sought to assess the implications of the spatial variations in riparian vegetation density for stream bank erosion in relation to land tenure on a catchment scale. Land tenure units comprising the catchment of study are traditional and betterment villages (communal lands), and former white commercial farms. A three-pronged approach using GIS and remote sensing, field investigations and laboratory procedures for soil analysis was employed in this study. Variations of riparian vegetation density in the catchment were mapped using ArcGIS for the two land tenure units to assess the spatial variations of riparian density along stream reaches and to determine the spatial relationship between land tenure units and riparian vegetation diminution. Other mapped shape files include sediment accumulation zones to analyse the spatial relationship between riparian vegetation density and sediment sinks. LUCC classification and analysis of the Normalized Difference Vegetation Index (NDVI) were carried out in IDRISI Selva, using Landsat 8 TM imagery of 2018 to represent the current spatial riparian vegetation variations in the catchment. Field investigations were conducted to determine the coupling among hillslope gully erosion, riparian vegetation density and sink areas; and to assess physical characteristics of soil. This would permit an assessment of the implications of riparian vegetation for stream bank erosion and sediment accumulation within the tenure units. Soil samples were taken from scantily and densely vegetated stream reaches, as well as measurements of channel widths and depths. Analyses of soil physical properties viz; grain size distribution, bulk density, soil texture and aggregate stability were done. Results demonstrated that a sparse riparian vegetation distribution was consistent with the communal villages, confined to the upper catchment area. Dense riparian vegetation distribution was consistent with former commercial farms in the lower catchment area. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2021
- Full Text:
- Date Issued: 2021-12
A systematic review of sustainability reports in South African listed companies
- Authors: Marawu, Lindiwe Nolitha
- Date: 2021-12
- Subjects: Corporation reports -- South Africa , Financial statements -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54036 , vital:46195
- Description: This study used a mixed methods approach to provide a systematic review of sustainability reports in South African listed companies that are included in the FTSE/JSE Responsible Investment Index. The purpose was to explore sustainability report content to guide companies of what should be included in such a report. A content analysis schedule was developed to provide the basis for the information to be extracted from the sustainability reports. Three categories, namely, biographical information, reporting format and the theoretical framework were included in the schedule. The sustainability reports of 18 South African JSE SRI Index companies listed on the JSE 2 July 2019 from the mining, retail and investment sectors were included in the sample. The main results showed that the majority of companies in the mining sector used sustainability reports, while nearly half of the companies in the retail sector used sustainability reports. Companies in the investment sector used a variety of reports with a third using integrated reports. Most companies used the JSE listing requirements as their guiding tool in developing their sustainability reports. Environmental issues also seemed to play a major role in sustainability development of a company irrespective of the sector to which it belonged. This systematic review identified the need for a regulator for sustainability reporting and the standardisation of sustainability report content. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Marawu, Lindiwe Nolitha
- Date: 2021-12
- Subjects: Corporation reports -- South Africa , Financial statements -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54036 , vital:46195
- Description: This study used a mixed methods approach to provide a systematic review of sustainability reports in South African listed companies that are included in the FTSE/JSE Responsible Investment Index. The purpose was to explore sustainability report content to guide companies of what should be included in such a report. A content analysis schedule was developed to provide the basis for the information to be extracted from the sustainability reports. Three categories, namely, biographical information, reporting format and the theoretical framework were included in the schedule. The sustainability reports of 18 South African JSE SRI Index companies listed on the JSE 2 July 2019 from the mining, retail and investment sectors were included in the sample. The main results showed that the majority of companies in the mining sector used sustainability reports, while nearly half of the companies in the retail sector used sustainability reports. Companies in the investment sector used a variety of reports with a third using integrated reports. Most companies used the JSE listing requirements as their guiding tool in developing their sustainability reports. Environmental issues also seemed to play a major role in sustainability development of a company irrespective of the sector to which it belonged. This systematic review identified the need for a regulator for sustainability reporting and the standardisation of sustainability report content. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
A value alignment smart city stakeholder model
- Van der Hoogen, Anthea Vivian
- Authors: Van der Hoogen, Anthea Vivian
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54129 , vital:46309
- Description: The concept of a Smart City has evolved over the last three decades and has attracted the increasing interest of the scientific research community. Unfortunately, many Smart City projects and initiatives do not provide the value expected by all the stakeholders. Many of the reasons for this relate to a lack of data management, data integration, data access and stakeholder participation. People are an integral part of any city’s ecosystem, and the Smart City concept was introduced to address the challenges of an ever-growing global population leading to the risk of depletion of economic, environmental and social resources. The problem addressed in this study is based on the challenges preventing the creation of the value of smart cities or stakeholders. Limited research has been published on the status of Smart City initiatives or on the impact of various success factors on the potential value creation for stakeholders including citizens. Studies on initiatives in developing countries, such as South Africa are even less. Whilst some challenges and constraints related to smart cities in Africa have been reported, there are no studies reporting on initiatives across the data value chain that consider all types of stakeholders, nor the impact of these initiatives. This study addressed this gap in research and designed a theoretical Value Alignment Smart City Stakeholder (VASCS) Model based on a Systematic Literature Review and a review of related theories. The model has important components that should form part of any Smart City project or Smart City initiative. These five main components are: 1) nine Smart City dimensions with related success factors; 2) four stakeholder roles (enablers, providers, utilisers and users); 3) the data value chain; and 4) the five phases of stakeholder benefits/value realisation that can be linked to; 5) stakeholder value alignment. This study applied the VASCS Model to Smart City initiatives in two case studies in the Eastern Cape Province of South Africa, which were the Nelson Mandela Bay and Buffalo City to investigate and understand the status of such initiatives and the alignment of value thereof. The stakeholder interviews were conducted in two rounds with various stakeholders of Smart City initiatives, referred to as cases in the two case studies. An expert review of the VASCS Model was conducted with eight experts in the field of Information Systems and Smart Cities. The findings of this review served to confirm the components of the model, with only minor improvements recommended. It was confirmed that all of the components need to be considered in planning Smart City projects. The first round consisted of six interviews with enablers and providers and the second round consisted of 22 interviews with users, utilisers and citizens. The interviews investigated the value and impact experienced by stakeholders of these initiatives, with a particular focus on the users, utilisers and citizens of the cases. The interview data was transcribed and qualitatively analysed by using Atlas.tiand Excel. The data was analysed according to the Technological, Organisational and Environmental theory constructs and other identified themes. The interview analysis findings revealed several drivers for these initiatives, which were primarily cost reduction, integration and quality assurance. The results also highlighted access to resources, such as technical skills as a challenge. Another challenge identified was connectivity related to access to data and the digital and physical divide that can impact decision making. The main benefits of Smart City initiatives highlighted were the provision of infrastructure, education and training and digitalisation. The theoretical contribution of this study is the VASCS Model, which can assist other researchers and practitioners with knowledge of the factors, drivers, challenges and value obtained in Smart City initiatives. The model has two supplementary components: A Stakeholder Classification Model and a Smart City Success Factor Evaluation Template. The practical contribution of this study is the potential use of the VASCS Model by practitioners, city management, researchers and other stakeholders, who can use the model, with the related model and template for planning and evaluating Smart City initiatives. The model can be used to classify the digital activities according to a Smart City’s success factors while evaluating the value created by these activities. The impact of these initiatives can then be assessed through value realisation and alignment for stakeholders. The scientific contribution is the adoption of the model to the cases in the Eastern Cape. To reveal in depth, rich, interview findings that provide important lessons learnt relating to the value created for the stakeholders and the addition of these findings to the body of knowledge. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Van der Hoogen, Anthea Vivian
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54129 , vital:46309
- Description: The concept of a Smart City has evolved over the last three decades and has attracted the increasing interest of the scientific research community. Unfortunately, many Smart City projects and initiatives do not provide the value expected by all the stakeholders. Many of the reasons for this relate to a lack of data management, data integration, data access and stakeholder participation. People are an integral part of any city’s ecosystem, and the Smart City concept was introduced to address the challenges of an ever-growing global population leading to the risk of depletion of economic, environmental and social resources. The problem addressed in this study is based on the challenges preventing the creation of the value of smart cities or stakeholders. Limited research has been published on the status of Smart City initiatives or on the impact of various success factors on the potential value creation for stakeholders including citizens. Studies on initiatives in developing countries, such as South Africa are even less. Whilst some challenges and constraints related to smart cities in Africa have been reported, there are no studies reporting on initiatives across the data value chain that consider all types of stakeholders, nor the impact of these initiatives. This study addressed this gap in research and designed a theoretical Value Alignment Smart City Stakeholder (VASCS) Model based on a Systematic Literature Review and a review of related theories. The model has important components that should form part of any Smart City project or Smart City initiative. These five main components are: 1) nine Smart City dimensions with related success factors; 2) four stakeholder roles (enablers, providers, utilisers and users); 3) the data value chain; and 4) the five phases of stakeholder benefits/value realisation that can be linked to; 5) stakeholder value alignment. This study applied the VASCS Model to Smart City initiatives in two case studies in the Eastern Cape Province of South Africa, which were the Nelson Mandela Bay and Buffalo City to investigate and understand the status of such initiatives and the alignment of value thereof. The stakeholder interviews were conducted in two rounds with various stakeholders of Smart City initiatives, referred to as cases in the two case studies. An expert review of the VASCS Model was conducted with eight experts in the field of Information Systems and Smart Cities. The findings of this review served to confirm the components of the model, with only minor improvements recommended. It was confirmed that all of the components need to be considered in planning Smart City projects. The first round consisted of six interviews with enablers and providers and the second round consisted of 22 interviews with users, utilisers and citizens. The interviews investigated the value and impact experienced by stakeholders of these initiatives, with a particular focus on the users, utilisers and citizens of the cases. The interview data was transcribed and qualitatively analysed by using Atlas.tiand Excel. The data was analysed according to the Technological, Organisational and Environmental theory constructs and other identified themes. The interview analysis findings revealed several drivers for these initiatives, which were primarily cost reduction, integration and quality assurance. The results also highlighted access to resources, such as technical skills as a challenge. Another challenge identified was connectivity related to access to data and the digital and physical divide that can impact decision making. The main benefits of Smart City initiatives highlighted were the provision of infrastructure, education and training and digitalisation. The theoretical contribution of this study is the VASCS Model, which can assist other researchers and practitioners with knowledge of the factors, drivers, challenges and value obtained in Smart City initiatives. The model has two supplementary components: A Stakeholder Classification Model and a Smart City Success Factor Evaluation Template. The practical contribution of this study is the potential use of the VASCS Model by practitioners, city management, researchers and other stakeholders, who can use the model, with the related model and template for planning and evaluating Smart City initiatives. The model can be used to classify the digital activities according to a Smart City’s success factors while evaluating the value created by these activities. The impact of these initiatives can then be assessed through value realisation and alignment for stakeholders. The scientific contribution is the adoption of the model to the cases in the Eastern Cape. To reveal in depth, rich, interview findings that provide important lessons learnt relating to the value created for the stakeholders and the addition of these findings to the body of knowledge. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text:
- Date Issued: 2021-12
Administrative justice and the implementation of the reconstruction and development program in Berlin Town, Eastern Cape
- Authors: Makie, Fundiswa
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54460 , vital:46577
- Description: Housing delivery in South Africa is a crucial and topical issue affecting many citizens. The primary objective of the study was to determine the role of administrative justice in the implementation of the Reconstructive and Development Programme (RDP) in Berlin Town, in the province of the Eastern Cape in South Africa. In addition, the aim of this study was to explore the challenges of RDP housing in the study area, as a way of probing whether housing needs were being met. The study was conducted using a qualitative research methodology in gathering data from Berlin Town residents, Buffalo City Metropolitan Municipality staff and Berlin Town councillors. The data analysis revealed that respondents affirmed the importance of administrative justice and the effective implementation of the RDP with regard to housing. Based on the findings of the study, the researcher recommends that the Buffalo City Metropolitan Municipality prioritise the full implementation of the Integrated Development Plan (IDP) in dealing with the housing backlog and challenges in Berlin Town. Moreover, the findings of this study revealed that it is possible to highlight specific recommendations that can be used by various other local municipalities. Thus, the research study showed that efficient local municipal operations have a direct impact on the delivery of RDP houses. Relating to ethical considerations, the researcher ensured that all the requirements for credible research were met throughout the study. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Makie, Fundiswa
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54460 , vital:46577
- Description: Housing delivery in South Africa is a crucial and topical issue affecting many citizens. The primary objective of the study was to determine the role of administrative justice in the implementation of the Reconstructive and Development Programme (RDP) in Berlin Town, in the province of the Eastern Cape in South Africa. In addition, the aim of this study was to explore the challenges of RDP housing in the study area, as a way of probing whether housing needs were being met. The study was conducted using a qualitative research methodology in gathering data from Berlin Town residents, Buffalo City Metropolitan Municipality staff and Berlin Town councillors. The data analysis revealed that respondents affirmed the importance of administrative justice and the effective implementation of the RDP with regard to housing. Based on the findings of the study, the researcher recommends that the Buffalo City Metropolitan Municipality prioritise the full implementation of the Integrated Development Plan (IDP) in dealing with the housing backlog and challenges in Berlin Town. Moreover, the findings of this study revealed that it is possible to highlight specific recommendations that can be used by various other local municipalities. Thus, the research study showed that efficient local municipal operations have a direct impact on the delivery of RDP houses. Relating to ethical considerations, the researcher ensured that all the requirements for credible research were met throughout the study. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-12
An analysis of the impact of Uniquely African Traditional Leadership Principles on the sustainability of Lean Manufacturing Implementation within the local manufacturing industry
- Authors: Katts, Ryan
- Date: 2021-12
- Subjects: Lean manufacturing -- South Africa , Manufacturing industries -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53954 , vital:46123
- Description: Businesses are under threat and will need to continuously improve if they are to survive, compete successfully and grow in the global marketplace. This is particularly the case for the manufacturing sector where continuous improvement in the quest to become efficient is of utmost importance. Lean Manufacturing (LM) has been implemented globally and has proven itself to be a benchmark manufacturing practice for achieving continuous improvement directed at business success with respect to increase revenue and business growth. Within the South African manufacturing industry, especially amongst automotive manufacturing sector, Lean Manufacturing has been widely implemented with mixed success. As Lean Manufacturing affects both processes and people, lean principles become key contributors for successful implementation within manufacturing. This study aimed to identify key principles required to improve the success of Lean Manufacturing implementation in the local manufacturing industry in South Africa. The research conducted identified pertinent aspects of LM that could be applied within the SA context. It begins with a review of current literature on Lean Manufacturing, exploring several topics which are relevant to the study. Lean Manufacturing literature was then summarised and tabulated into the Principles and supportive behavioural elements for successful Lean implementation. Important aspects identified during the research that are required for successful LM implementation were Teamwork, Engagement / Commitment, Ideas / Suggestions, Communication, Improvement Culture, Training and Committed Leadership. Then, a literature review on African Leadership was conducted, exploring various elements of leadership and principles that are instilled in leaders within Africa. Key elements from this literature were summarised and tabulated into the Principles and supportive behavioural elements within African Leadership. For African Leadership, principles such as Communalism, Collectivism, Humaneness, Mutual Respect and Cross Cultural Literacy were identified as Uniquely African Traditional Leadership Principles required to be present for successful Lean implementation. These summaries formed the basis from which two self-constructed questionnaires and a Uniquely African Traditional Leadership Principles Interview were compiled. The two self-constructed questionnaires and interview were used as measuring instruments to measure the presence of the above mentioned principles and behavioural elements within organisations and determine whether they have an impact on the sustainability of Lean Manufacturing implementation. Finding from this research indicated that the Uniquely African Traditional Leadership Principles identified were present within organisations, but to an even greater extent within organisations that have successfully implemented Lean Manufacturing. This indicates that Uniquely African Traditional Leadership Principles have a positive effect on the sustainability of Lean Manufacturing implementation. The researcher recommends that, to further improve the presence of Uniquely African Traditional Leadership Principles and principles that display successful LI within organisations, focus be placed on the principles and supportive behavioural elements detailed within this document. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Katts, Ryan
- Date: 2021-12
- Subjects: Lean manufacturing -- South Africa , Manufacturing industries -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53954 , vital:46123
- Description: Businesses are under threat and will need to continuously improve if they are to survive, compete successfully and grow in the global marketplace. This is particularly the case for the manufacturing sector where continuous improvement in the quest to become efficient is of utmost importance. Lean Manufacturing (LM) has been implemented globally and has proven itself to be a benchmark manufacturing practice for achieving continuous improvement directed at business success with respect to increase revenue and business growth. Within the South African manufacturing industry, especially amongst automotive manufacturing sector, Lean Manufacturing has been widely implemented with mixed success. As Lean Manufacturing affects both processes and people, lean principles become key contributors for successful implementation within manufacturing. This study aimed to identify key principles required to improve the success of Lean Manufacturing implementation in the local manufacturing industry in South Africa. The research conducted identified pertinent aspects of LM that could be applied within the SA context. It begins with a review of current literature on Lean Manufacturing, exploring several topics which are relevant to the study. Lean Manufacturing literature was then summarised and tabulated into the Principles and supportive behavioural elements for successful Lean implementation. Important aspects identified during the research that are required for successful LM implementation were Teamwork, Engagement / Commitment, Ideas / Suggestions, Communication, Improvement Culture, Training and Committed Leadership. Then, a literature review on African Leadership was conducted, exploring various elements of leadership and principles that are instilled in leaders within Africa. Key elements from this literature were summarised and tabulated into the Principles and supportive behavioural elements within African Leadership. For African Leadership, principles such as Communalism, Collectivism, Humaneness, Mutual Respect and Cross Cultural Literacy were identified as Uniquely African Traditional Leadership Principles required to be present for successful Lean implementation. These summaries formed the basis from which two self-constructed questionnaires and a Uniquely African Traditional Leadership Principles Interview were compiled. The two self-constructed questionnaires and interview were used as measuring instruments to measure the presence of the above mentioned principles and behavioural elements within organisations and determine whether they have an impact on the sustainability of Lean Manufacturing implementation. Finding from this research indicated that the Uniquely African Traditional Leadership Principles identified were present within organisations, but to an even greater extent within organisations that have successfully implemented Lean Manufacturing. This indicates that Uniquely African Traditional Leadership Principles have a positive effect on the sustainability of Lean Manufacturing implementation. The researcher recommends that, to further improve the presence of Uniquely African Traditional Leadership Principles and principles that display successful LI within organisations, focus be placed on the principles and supportive behavioural elements detailed within this document. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
An assessment of the financial sustainability of Thandusana non-governmental organisation
- Authors: Murombo, Tapiwa
- Date: 2021-12
- Subjects: Non-governmental organizations , Business enterprises -- Finance , Sustainable development
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54947 , vital:48509
- Description: The role that is played by Non-Governmental Organisations in aiding development initiatives can never be overemphasised. These organisations have partnered with numerous States, mostly in developing countries, in spearheading, facilitating, and evaluating various development programmes. Yet, they face daunting futures as their constant reliability on donor funds has affected their sustainability. To this end, their efforts in addressing social, economic, and even political challenges in a sustainable manner is greatly compromised. This research seeks to assess the financial sustainability of local NGOs with Thandusana as a case study. It further explores factors other than funding that influences an organisation's financial sustainability. These factors are income diversification, sound financial management practices, good donor relationships and own income generation. The research concurred with many other scholars that local non-governmental organisations in South Africa are financially unsustainable and are dependent on donor funds, and Thandusana is no exception. After having found out that Thandusana is not geared to create its own income-generating activities, the research concludes by recommending that the governing board establish structures that commit funds for profit-making ventures which are in turn used to sponsor their non-profit functions but caution should be exercised lest they abandon their missions for profit-making. This study employed a qualitative research approach and is based on an interpretive paradigm. The research used a descriptive case study design. Data was collected using document compilation while document analysis was the data analysis tool. Non-probability sampling was used in selecting the sample that was used. , Thesis (MADS) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Murombo, Tapiwa
- Date: 2021-12
- Subjects: Non-governmental organizations , Business enterprises -- Finance , Sustainable development
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54947 , vital:48509
- Description: The role that is played by Non-Governmental Organisations in aiding development initiatives can never be overemphasised. These organisations have partnered with numerous States, mostly in developing countries, in spearheading, facilitating, and evaluating various development programmes. Yet, they face daunting futures as their constant reliability on donor funds has affected their sustainability. To this end, their efforts in addressing social, economic, and even political challenges in a sustainable manner is greatly compromised. This research seeks to assess the financial sustainability of local NGOs with Thandusana as a case study. It further explores factors other than funding that influences an organisation's financial sustainability. These factors are income diversification, sound financial management practices, good donor relationships and own income generation. The research concurred with many other scholars that local non-governmental organisations in South Africa are financially unsustainable and are dependent on donor funds, and Thandusana is no exception. After having found out that Thandusana is not geared to create its own income-generating activities, the research concludes by recommending that the governing board establish structures that commit funds for profit-making ventures which are in turn used to sponsor their non-profit functions but caution should be exercised lest they abandon their missions for profit-making. This study employed a qualitative research approach and is based on an interpretive paradigm. The research used a descriptive case study design. Data was collected using document compilation while document analysis was the data analysis tool. Non-probability sampling was used in selecting the sample that was used. , Thesis (MADS) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
An Entrepreneurial Ecosystem framework for Nelson Mandela Bay
- Authors: Boucher, Marilyn Sasha
- Date: 2021-12
- Subjects: Entrepreneurship -- South Africa , Sustainable development--Eastern Cape (South Africa)
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53562 , vital:45630
- Description: In recent years, the concept of entrepreneurial ecosystems increased in status amongst policy makers, scholars, practitioners, and mainstream media as a regional economic development strategy. Yet, despite the opportunities presented by the entrepreneurial ecosystem, it is both under-theorized and lacks data on a sub-national scale. Furthermore, research from an African and sub-Saharan African context remains in its infancy. The limited research within these resource-constrained countries creates a challenge to determine the underlying factors that influence entrepreneurship. As a result, developing economies, as in the case of sub-Saharan Africa, have applied generalizations of the entrepreneurial ecosystem, which undermine the temporal differences of places and reduce the potential to benefit from agglomeration economies. With the National Development Plan: Vision 2030, the South African government strives to achieve an inclusive economy through enhancing the capacity of the state, building capabilities, and promoting partnerships amongst sectors. Motivated by the mandate to redress the inequality caused by economic exclusion, the South African government has taken counteractive measures focused on promoting entrepreneurship as a key driver of economic growth. Despite the measures placed, South Africa struggles with high levels of inequality with a Gini coefficient of 0.63, unemployment of 32.6% and negative GDP per capita growth of - 8.137%. Furthermore, most small businesses in South Africa are informal, which means that a disproportionate concentration of employment exists in the informal sector. Against this backdrop, the problem addressed in this study is based on the challenge of creating productive entrepreneurship that acknowledges the unique structure and resources of Nelson Mandela Bay. To address this gap, a critical inquiry into entrepreneurial ecosystems was motivated. First, the inquiry is focused on a real-world context, namely Nelson Mandela Bay, which is one of the eight metropolitan regions in South Africa, a developing economy. Second, the inquiry uses multiple perspectives through multiple data collection methods. To commence the inquiry, a literature review was conducted on secondary sources to identify the factors influencing entrepreneurial ecosystems and formed the basis of the theoretical framework. The study followed the pragmatism research philosophy and used an abductive research approach. A mixed method research design was utilized and followed a sequential independent process, which was performed in two phases and independently analyzed. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Boucher, Marilyn Sasha
- Date: 2021-12
- Subjects: Entrepreneurship -- South Africa , Sustainable development--Eastern Cape (South Africa)
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/53562 , vital:45630
- Description: In recent years, the concept of entrepreneurial ecosystems increased in status amongst policy makers, scholars, practitioners, and mainstream media as a regional economic development strategy. Yet, despite the opportunities presented by the entrepreneurial ecosystem, it is both under-theorized and lacks data on a sub-national scale. Furthermore, research from an African and sub-Saharan African context remains in its infancy. The limited research within these resource-constrained countries creates a challenge to determine the underlying factors that influence entrepreneurship. As a result, developing economies, as in the case of sub-Saharan Africa, have applied generalizations of the entrepreneurial ecosystem, which undermine the temporal differences of places and reduce the potential to benefit from agglomeration economies. With the National Development Plan: Vision 2030, the South African government strives to achieve an inclusive economy through enhancing the capacity of the state, building capabilities, and promoting partnerships amongst sectors. Motivated by the mandate to redress the inequality caused by economic exclusion, the South African government has taken counteractive measures focused on promoting entrepreneurship as a key driver of economic growth. Despite the measures placed, South Africa struggles with high levels of inequality with a Gini coefficient of 0.63, unemployment of 32.6% and negative GDP per capita growth of - 8.137%. Furthermore, most small businesses in South Africa are informal, which means that a disproportionate concentration of employment exists in the informal sector. Against this backdrop, the problem addressed in this study is based on the challenge of creating productive entrepreneurship that acknowledges the unique structure and resources of Nelson Mandela Bay. To address this gap, a critical inquiry into entrepreneurial ecosystems was motivated. First, the inquiry is focused on a real-world context, namely Nelson Mandela Bay, which is one of the eight metropolitan regions in South Africa, a developing economy. Second, the inquiry uses multiple perspectives through multiple data collection methods. To commence the inquiry, a literature review was conducted on secondary sources to identify the factors influencing entrepreneurial ecosystems and formed the basis of the theoretical framework. The study followed the pragmatism research philosophy and used an abductive research approach. A mixed method research design was utilized and followed a sequential independent process, which was performed in two phases and independently analyzed. , Thesis (DBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Applying a systems analysis approach to support marine spatial planning in Algoa Bay, South Africa
- Authors: Vermeulen, Estee Ann
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54121 , vital:46312
- Description: Ocean health provides the foundation for human health through the provisioning of ecosystem services. Increasing demands on ocean space and resources are, however, resulting in a decline in ocean health, with direct and indirect knock-on effects on marine uses and ultimately on human health. In response, there is a growing need to acknowledge and better manage complex human-ocean interactions. This has been recognised in global sustainable development goals and in integrated ocean management processes, leading to widespread endorsement of an ecosystem-based marine spatial planning (MSP) process, including in South Africa. In support of the national MSP process, significant progress has been made in understanding the spatial extent of marine activities and associated marine pressures, but the temporal dynamics of marine activities and interconnections with the marine environment are less well understood. To plan for the growth of marine activities and associated user conflicts, the drivers of these temporal dynamics and associated feedback effects need to be analysed and potential policy and management interventions identified and tested. To support South Africa’s national MSP process, this study adopts a systems analysis approach, using system dynamics modelling, to explore the temporal change in marine uses under alternative growth scenarios in Algoa Bay. Algoa Bay is an appropriate study area because it is experiencing a rapid expansion of marine activities, coupled with a growing uncertainty regarding marine sustainability outcomes. To assist future marine management decisions, the Algoa Marine Systems Analysis Tool (Algoa MSAT) was developed, comprising seven sub-models. Five of the sub-models represent selected marine uses in Algoa Bay, whereas the sixth and seventh integrate the outputs from each marine use in terms of sustainable management indicators (marine health, marine wealth and marine labour). Model development primarily adopted an expert-based model ling approach, although the involvement of stakeholders, through a collaborative modelling process, assisted in integrating knowledge on different marine sectors’ activities, impacts and planning visions into the model framework. Model results were generated under different scenarios to investigate changes in the growth of marine activities and marine sustainability indicators under different levels of ocean governance. Under the baseline (or business-as-usual) model scenario, marine activities were shown to grow increasingly within their respective management limits, with an increase in marine wealth and labour and a consequential decrease in marine health. This scenario particularly highlights that current ocean governance practices are ineffective in sustaining the projected growth of the marine uses, particularly for those that are vulnerable to negative changes in marine health. Conversely, sectors that hold more value in marine wealth and are more resilient to changes in marine health, may continue to grow regardless of negative knock-on effects of the health of the marine environment and on other uses in the bay. This emphasises that an alternative governance strategy is needed to achieve the long-term goal of an ecosystem-based MSP process, as required by South African MSP legislation. To achieve this will require multiple, adaptive cross-sectoral management interventions that are directed towards the ‘deeper leverage points’ that are able to maintain the growth of marine activities within appropriate limits defined by marine health. Using the model interface developed in this project, decision-makers and stakeholders can use the model to explore the temporal dynamics in marine activities under different governance scenarios. Although the model is limited to Algoa Bay, the model boundary can be adapted to assist in marine planning processes at national or trans-national scales. Such analytical assessments and tools are critical to progress the ecosystem-based management approach in MSP, as is required to achieve global sustainable development goals. , Thesis (PhD) -- Faculty of Science, Coastal and Marine Research Unit, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Vermeulen, Estee Ann
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54121 , vital:46312
- Description: Ocean health provides the foundation for human health through the provisioning of ecosystem services. Increasing demands on ocean space and resources are, however, resulting in a decline in ocean health, with direct and indirect knock-on effects on marine uses and ultimately on human health. In response, there is a growing need to acknowledge and better manage complex human-ocean interactions. This has been recognised in global sustainable development goals and in integrated ocean management processes, leading to widespread endorsement of an ecosystem-based marine spatial planning (MSP) process, including in South Africa. In support of the national MSP process, significant progress has been made in understanding the spatial extent of marine activities and associated marine pressures, but the temporal dynamics of marine activities and interconnections with the marine environment are less well understood. To plan for the growth of marine activities and associated user conflicts, the drivers of these temporal dynamics and associated feedback effects need to be analysed and potential policy and management interventions identified and tested. To support South Africa’s national MSP process, this study adopts a systems analysis approach, using system dynamics modelling, to explore the temporal change in marine uses under alternative growth scenarios in Algoa Bay. Algoa Bay is an appropriate study area because it is experiencing a rapid expansion of marine activities, coupled with a growing uncertainty regarding marine sustainability outcomes. To assist future marine management decisions, the Algoa Marine Systems Analysis Tool (Algoa MSAT) was developed, comprising seven sub-models. Five of the sub-models represent selected marine uses in Algoa Bay, whereas the sixth and seventh integrate the outputs from each marine use in terms of sustainable management indicators (marine health, marine wealth and marine labour). Model development primarily adopted an expert-based model ling approach, although the involvement of stakeholders, through a collaborative modelling process, assisted in integrating knowledge on different marine sectors’ activities, impacts and planning visions into the model framework. Model results were generated under different scenarios to investigate changes in the growth of marine activities and marine sustainability indicators under different levels of ocean governance. Under the baseline (or business-as-usual) model scenario, marine activities were shown to grow increasingly within their respective management limits, with an increase in marine wealth and labour and a consequential decrease in marine health. This scenario particularly highlights that current ocean governance practices are ineffective in sustaining the projected growth of the marine uses, particularly for those that are vulnerable to negative changes in marine health. Conversely, sectors that hold more value in marine wealth and are more resilient to changes in marine health, may continue to grow regardless of negative knock-on effects of the health of the marine environment and on other uses in the bay. This emphasises that an alternative governance strategy is needed to achieve the long-term goal of an ecosystem-based MSP process, as required by South African MSP legislation. To achieve this will require multiple, adaptive cross-sectoral management interventions that are directed towards the ‘deeper leverage points’ that are able to maintain the growth of marine activities within appropriate limits defined by marine health. Using the model interface developed in this project, decision-makers and stakeholders can use the model to explore the temporal dynamics in marine activities under different governance scenarios. Although the model is limited to Algoa Bay, the model boundary can be adapted to assist in marine planning processes at national or trans-national scales. Such analytical assessments and tools are critical to progress the ecosystem-based management approach in MSP, as is required to achieve global sustainable development goals. , Thesis (PhD) -- Faculty of Science, Coastal and Marine Research Unit, 2021
- Full Text:
- Date Issued: 2021-12
Applying insights from machine learning towards guidelines for the detection of text-based fake news
- Authors: Ngada, Okuhle
- Date: 2021-12
- Subjects: Machine learning , Fake News
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60243 , vital:64141
- Description: Web-based technologies have fostered an online environment where information can be disseminated in a fast and cost-effective manner whilst targeting large and diverse audiences. Unfortunately, the rise and evolution of web-based technologies have also created an environment where false information, commonly referred to as “fake news”, spreads rapidly. The effects of this spread can be catastrophic. Finding solutions to the problem of fake news is complicated for a myriad of reasons, such as: what is defined as fake news, the lack of quality datasets available to researchers, the topics covered in such data, and the fact that datasets exist in a variety of languages. The effects of false information dissemination can result in reputational damage, financial damage to affected brands, and ultimately, misinformed online news readers who can make misinformed decisions. The objective of the study is to propose a set of guidelines that can be used by other system developers to implement misinformation detection tools and systems. The guidelines are constructed using findings from the experimentation phase of the project and information uncovered in the literature review conducted as part of the study. A selection of machine and deep learning approaches are examined to test the applicability of cues that could separate fake online articles from real online news articles. Key performance metrics such as precision, recall, accuracy, F1-score, and ROC are used to measure the performance of the selected machine learning and deep learning models. To demonstrate the practicality of the guidelines and allow for reproducibility of the research, each guideline provides background information relating to the identified problem, a solution to the problem through pseudocode, code excerpts using the Python programming language, and points of consideration that may assist with the implementation. , Thesis (MA) --Faculty of Engineering, the Built Environment, and Technology, 2021
- Full Text:
- Date Issued: 2021-12
Applying insights from machine learning towards guidelines for the detection of text-based fake news
- Authors: Ngada, Okuhle
- Date: 2021-12
- Subjects: Machine learning , Fake News
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60243 , vital:64141
- Description: Web-based technologies have fostered an online environment where information can be disseminated in a fast and cost-effective manner whilst targeting large and diverse audiences. Unfortunately, the rise and evolution of web-based technologies have also created an environment where false information, commonly referred to as “fake news”, spreads rapidly. The effects of this spread can be catastrophic. Finding solutions to the problem of fake news is complicated for a myriad of reasons, such as: what is defined as fake news, the lack of quality datasets available to researchers, the topics covered in such data, and the fact that datasets exist in a variety of languages. The effects of false information dissemination can result in reputational damage, financial damage to affected brands, and ultimately, misinformed online news readers who can make misinformed decisions. The objective of the study is to propose a set of guidelines that can be used by other system developers to implement misinformation detection tools and systems. The guidelines are constructed using findings from the experimentation phase of the project and information uncovered in the literature review conducted as part of the study. A selection of machine and deep learning approaches are examined to test the applicability of cues that could separate fake online articles from real online news articles. Key performance metrics such as precision, recall, accuracy, F1-score, and ROC are used to measure the performance of the selected machine learning and deep learning models. To demonstrate the practicality of the guidelines and allow for reproducibility of the research, each guideline provides background information relating to the identified problem, a solution to the problem through pseudocode, code excerpts using the Python programming language, and points of consideration that may assist with the implementation. , Thesis (MA) --Faculty of Engineering, the Built Environment, and Technology, 2021
- Full Text:
- Date Issued: 2021-12
Assessing factors impacting effective corporate governance within Eastern Cape public entities
- Authors: Yamile, William Themba
- Date: 2021-12
- Subjects: Corporate governance -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54619 , vital:46866
- Description: Corporate governance is regarded as a system by which an organisation is directed and controlled and it is concerned with structures and responsibilities within organisations. Public entities’ corporate governance is a concept that is gaining more interest, both in specialized literature and in practice. Corporate governance practices are not standard across countries and this dissimilarity is a result of diverse legal structures and cultural settings adopted by different states and provinces. The Eastern Cape Public Entities (ECPEs) have an important role to play in pursuing the economic, social and developmental state agenda. The EC province has ten (10) public entities with mandates and enabling legislations to enhance the provincial economic development, growth and sustainability issues. Of the ten (10) public entities, one entity was used for pilot study. Furthermore, one public entity decided to withdraw from the study, as it was voluntary to participate and that resulted in eight public entities participating. In terms of the questionnaire returns, forty-four (44) responses were received from eight (8) public entities. The main objective of this study was to investigate selected factors impacting on effective corporate governance of ECPEs. In this study, positivistic research paradigm was utilised by means of quantitative research method. Non-probability sampling was used. Primary data was collected using the survey method by means of structured self-administered questionnaires. The empirical results showed that ethical value, organisational culture and policy regulatory framework had a statistically significant impact on corporate governance of ECPEs; while employee morale, leadership, and role clarification were found not to have a statistically significant impact on corporate governance. The findings of this study are envisaged to assist in ensuring effective governance of public entities in order to encourage accountability, public confidence or trust in the corporate system and to drive public policy. Furthermore, the findings can help public entities to achieve what is expected, in terms of work performance objectives or productivity in accordance with the norms and standards. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Yamile, William Themba
- Date: 2021-12
- Subjects: Corporate governance -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54619 , vital:46866
- Description: Corporate governance is regarded as a system by which an organisation is directed and controlled and it is concerned with structures and responsibilities within organisations. Public entities’ corporate governance is a concept that is gaining more interest, both in specialized literature and in practice. Corporate governance practices are not standard across countries and this dissimilarity is a result of diverse legal structures and cultural settings adopted by different states and provinces. The Eastern Cape Public Entities (ECPEs) have an important role to play in pursuing the economic, social and developmental state agenda. The EC province has ten (10) public entities with mandates and enabling legislations to enhance the provincial economic development, growth and sustainability issues. Of the ten (10) public entities, one entity was used for pilot study. Furthermore, one public entity decided to withdraw from the study, as it was voluntary to participate and that resulted in eight public entities participating. In terms of the questionnaire returns, forty-four (44) responses were received from eight (8) public entities. The main objective of this study was to investigate selected factors impacting on effective corporate governance of ECPEs. In this study, positivistic research paradigm was utilised by means of quantitative research method. Non-probability sampling was used. Primary data was collected using the survey method by means of structured self-administered questionnaires. The empirical results showed that ethical value, organisational culture and policy regulatory framework had a statistically significant impact on corporate governance of ECPEs; while employee morale, leadership, and role clarification were found not to have a statistically significant impact on corporate governance. The findings of this study are envisaged to assist in ensuring effective governance of public entities in order to encourage accountability, public confidence or trust in the corporate system and to drive public policy. Furthermore, the findings can help public entities to achieve what is expected, in terms of work performance objectives or productivity in accordance with the norms and standards. , Thesis (MCom) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Assessing service delivery protests in the Nelson Mandela Bay Municipality: the case of Walmer Township
- Authors: Mdanyana, Esethu
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54492 , vital:46609
- Description: In many South Africa’s areas, citizen’s frustration with poor or slow service delivery has resulted in a surge of service delivery protests. Some of these service delivery protests are violent in nature, resulting in the damage of public and private property. Therefore, it is imperative to scrutinize service delivery protests. The South African constitution states that municipalities have the responsibility to make sure that all citizens are provided with services to satisfy their basic needs. These services include water supply, sewage collection and disposal electricity, gas supply health services, roads, storm water drainage, street lighting, municipal parks and recreation. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text: false
- Date Issued: 2021-12
- Authors: Mdanyana, Esethu
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54492 , vital:46609
- Description: In many South Africa’s areas, citizen’s frustration with poor or slow service delivery has resulted in a surge of service delivery protests. Some of these service delivery protests are violent in nature, resulting in the damage of public and private property. Therefore, it is imperative to scrutinize service delivery protests. The South African constitution states that municipalities have the responsibility to make sure that all citizens are provided with services to satisfy their basic needs. These services include water supply, sewage collection and disposal electricity, gas supply health services, roads, storm water drainage, street lighting, municipal parks and recreation. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text: false
- Date Issued: 2021-12
Assessing the implementation of environmental education school policy in Buffalo City Metro Education District South Africa
- Authors: Damoah, Benjamin
- Date: 2021-12
- Subjects: Environmental education , Environmental policy -- South Africa , Education and state -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21602 , vital:51703
- Description: Environmental Education (EE) is essential for addressing environmental challenges.The advantages of EE are undeniable; it might be used to address specific environmental concerns and their implications, as well as to modify behaviours that lead to environmental catastrophes.EE strengthens people's resilience to climaterelated hazards. Global environmental issues have heightened interest in educational policy outcomes and their implications for economic growth and social citizenship. It is worth noting that an effective EE policy has a significant influence on the development of learners' environmental literacy. This study assessed the implementation of environmental education school policy in the Buffalo City Metro Education District, South Africa. This study adopted the pragmatism paradigm of Mixed Method Research(MMR). Concurrent triangulation, which is a design that employs a single data collection technique in which quantitative and qualitative data gathering and analysis are carried out independently yet concurrently, was used for this study. The target population of this study involved 60,412 teachers, 1,770,289 learners in 5205 public schools, and 1 Pro-EE civil society organisation in the Eastern Cape province. This was narrowed down to over 268 public and independent schools, teachers, and principals within the enclave of the Buffalo Metropolitan education district. The study adopted stratified purposeful and simple random probability sampling. In this technique, the sampling frame of the study was divided into strata or groups (principals, teachers, learners, and CSOs) and a sample was purposefully selected from each stratum (Migiro & Magangi, 2011). The stratified purposeful random sampling techniques draw data from 10 principals, 175 teachers, 1500 learners, and 1 CSO. Structured questionnaire; Implementation of EE Policy Questionnaire (IEEPQ) whose reliability co-efficient value using Cronbach Alpha was 0.74, semi-structured interview and documents were the instruments used to collect data for this study. The data were analysed using descriptive statistics of percentage, mean, and standard deviation for the quantitative data while the thematic approach of sorting, coding, transcribing, and categorization was used for the qualitative data. The study revealed the following. When asked whether teachers had studied environmental education in tertiary institutions as part of their professional training, the majority of the teachers'respondents, 108, representing 61.7percent, disagreed with this view. On the flip side, a handful of teachers 67, (38.3percent) agreed with the view of having had some sort of EE knowledge during their professional training as teachers. With regards to the view that learners learn environmental issues through other subjects, most of the learner respondents, 1316 representing 87.7percent, agreed with this view. On the contrary, a minority of the respondents 184 (12,3percent) had a dissenting opinion. This indicates that most learners in school learn about environmental concerns through other traditional subjects. The study established that EE content is manifest in teachers' and learners' textbooks, teaching methods, and co-curricular activities. However, the study identified lapses in how teachers and learners integrate EE into their day-to-day practices. Therefore, the implementation of the EE policy seems to be an exercise in futility. The absence of a policy guideline document has made teachers and school administrators incapacitated in the implementation of EE school policy. , Thesis (PhD) -- Faculty of Education, 2022
- Full Text:
- Date Issued: 2021-12
- Authors: Damoah, Benjamin
- Date: 2021-12
- Subjects: Environmental education , Environmental policy -- South Africa , Education and state -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/21602 , vital:51703
- Description: Environmental Education (EE) is essential for addressing environmental challenges.The advantages of EE are undeniable; it might be used to address specific environmental concerns and their implications, as well as to modify behaviours that lead to environmental catastrophes.EE strengthens people's resilience to climaterelated hazards. Global environmental issues have heightened interest in educational policy outcomes and their implications for economic growth and social citizenship. It is worth noting that an effective EE policy has a significant influence on the development of learners' environmental literacy. This study assessed the implementation of environmental education school policy in the Buffalo City Metro Education District, South Africa. This study adopted the pragmatism paradigm of Mixed Method Research(MMR). Concurrent triangulation, which is a design that employs a single data collection technique in which quantitative and qualitative data gathering and analysis are carried out independently yet concurrently, was used for this study. The target population of this study involved 60,412 teachers, 1,770,289 learners in 5205 public schools, and 1 Pro-EE civil society organisation in the Eastern Cape province. This was narrowed down to over 268 public and independent schools, teachers, and principals within the enclave of the Buffalo Metropolitan education district. The study adopted stratified purposeful and simple random probability sampling. In this technique, the sampling frame of the study was divided into strata or groups (principals, teachers, learners, and CSOs) and a sample was purposefully selected from each stratum (Migiro & Magangi, 2011). The stratified purposeful random sampling techniques draw data from 10 principals, 175 teachers, 1500 learners, and 1 CSO. Structured questionnaire; Implementation of EE Policy Questionnaire (IEEPQ) whose reliability co-efficient value using Cronbach Alpha was 0.74, semi-structured interview and documents were the instruments used to collect data for this study. The data were analysed using descriptive statistics of percentage, mean, and standard deviation for the quantitative data while the thematic approach of sorting, coding, transcribing, and categorization was used for the qualitative data. The study revealed the following. When asked whether teachers had studied environmental education in tertiary institutions as part of their professional training, the majority of the teachers'respondents, 108, representing 61.7percent, disagreed with this view. On the flip side, a handful of teachers 67, (38.3percent) agreed with the view of having had some sort of EE knowledge during their professional training as teachers. With regards to the view that learners learn environmental issues through other subjects, most of the learner respondents, 1316 representing 87.7percent, agreed with this view. On the contrary, a minority of the respondents 184 (12,3percent) had a dissenting opinion. This indicates that most learners in school learn about environmental concerns through other traditional subjects. The study established that EE content is manifest in teachers' and learners' textbooks, teaching methods, and co-curricular activities. However, the study identified lapses in how teachers and learners integrate EE into their day-to-day practices. Therefore, the implementation of the EE policy seems to be an exercise in futility. The absence of a policy guideline document has made teachers and school administrators incapacitated in the implementation of EE school policy. , Thesis (PhD) -- Faculty of Education, 2022
- Full Text:
- Date Issued: 2021-12
Authentic leadership, psychological capital, work engagement and safety behaviour in a construction environment
- Authors: Turner, Gillian
- Date: 2021-12
- Subjects: Construction industry -- South Africa -- Safety measures
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54388 , vital:46487
- Description: Research purpose: The purpose of the study was (1) to investigate the relationship between authentic leadership, psychological capital (PsyCap), work engagement, and employees’ safety behaviour, and (2) to develop and test a theoretical model comprising of all four constructs as informed by the literature review and data collected. In essence, the goal is to develop recommendations to support and contribute to the overall effectiveness of the construction industry based on the findings of the study. The study will assist South African businesses in the construction domain to manage their demanding work environment and minimise the number of occupational safety violations and injuries. Research motivation: Studies that explore safety from more recently acknowledged leadership theories are in short supply. This study is addressed through the lens of Positive Organisational Behaviour (POB) to situate authentic leadership and PsyCap as measurable constructs that can be developed to have a positive impact on work engagement and safety behaviour. This approach is especially significant in the South African construction environment because of the growing emphasis on the health and safety concerns. In essence, this study links a contemporary leadership theory, psychological constructs, and associated outcomes distinctively to a given industry within the South African context, that is work engagement and safety behaviour. Research design, approach, and method: This study follows a cross-sectional approach to investigate the relationship between authentic leadership, PsyCap, work engagement, and safety behaviour in a construction environment. Convenience sampling was employed to recruit full-time employed workers across hierarchical levels, ranging from blue-collar workers (installation technicians, paving installers, and maintenance technicians) to white-collar workers (supervisors, line managers, senior managers, and other administrative employees), working in the South African construction industry. Both paper-and-pencil and online questionnaires were utilised to collect data for the study. Two hundred paper-and-pencil questionnaires were distributed, and 89 online questionnaires were accessed by potential respondents, with a total of 198 completed questionnaires. A response rate of 65.41% was realised. Quantitative techniques were used to analyse the data: Reliability assessment, Confirmatory factor analysis (CFA), correlation analysis, independent t-test, analysis of variance (ANOVA), and structural equation modelling (SEM). Main findings: All hypotheses were supported. The results indicate that there is an association between the constructs in the study. Specifically, the relationship between authentic leadership and safety behaviour is mediated by PsyCap and work engagement. The research provides valuable input as significant differences were noted across all constructs and demographic variables, except age. Limitations: The results should be interpreted, bearing in mind that there is limited literature available on the relationship between the constructs in the study when applied to the South African context. Furthermore, the limitations primarily revolved around the research design. Specifically, the questionnaire was completed at one point in time and the use of convenience sampling may be associated with possible sampling bias. In response to the COVID-19 pandemic and lockdown which limited group gatherings and contact, a change in the data collection method was necessary. That is, the data collection method changed from a paper-and-pencil version to the online administration of the questionnaire. This resulted in a six-month delay in the completion of data collection. Finally, the wording of certain items may have contributed to central tendency in responses. Future research: It is suggested that future studies should investigate the relationship between the constructs using larger samples, different occupations, alternative South African industries, and explore the long-term effects of these constructs in the South African workplace by adopting a longitudinal research design. This can also be considered in relation to possible interventions to improve leadership authenticity and increase PsyCap and work engagement, with the intention of mitigating adverse safety events in the construction industry. In addition, future studies should also consider how this relationship can be influenced by different ethnic and cultural groups to gain a better understanding of how differences in ethnicity manifests in the constructs. Researchers should also explore the constructs as a group-level phenomenon and consider explanations from an alternative theoretical framework. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Turner, Gillian
- Date: 2021-12
- Subjects: Construction industry -- South Africa -- Safety measures
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/54388 , vital:46487
- Description: Research purpose: The purpose of the study was (1) to investigate the relationship between authentic leadership, psychological capital (PsyCap), work engagement, and employees’ safety behaviour, and (2) to develop and test a theoretical model comprising of all four constructs as informed by the literature review and data collected. In essence, the goal is to develop recommendations to support and contribute to the overall effectiveness of the construction industry based on the findings of the study. The study will assist South African businesses in the construction domain to manage their demanding work environment and minimise the number of occupational safety violations and injuries. Research motivation: Studies that explore safety from more recently acknowledged leadership theories are in short supply. This study is addressed through the lens of Positive Organisational Behaviour (POB) to situate authentic leadership and PsyCap as measurable constructs that can be developed to have a positive impact on work engagement and safety behaviour. This approach is especially significant in the South African construction environment because of the growing emphasis on the health and safety concerns. In essence, this study links a contemporary leadership theory, psychological constructs, and associated outcomes distinctively to a given industry within the South African context, that is work engagement and safety behaviour. Research design, approach, and method: This study follows a cross-sectional approach to investigate the relationship between authentic leadership, PsyCap, work engagement, and safety behaviour in a construction environment. Convenience sampling was employed to recruit full-time employed workers across hierarchical levels, ranging from blue-collar workers (installation technicians, paving installers, and maintenance technicians) to white-collar workers (supervisors, line managers, senior managers, and other administrative employees), working in the South African construction industry. Both paper-and-pencil and online questionnaires were utilised to collect data for the study. Two hundred paper-and-pencil questionnaires were distributed, and 89 online questionnaires were accessed by potential respondents, with a total of 198 completed questionnaires. A response rate of 65.41% was realised. Quantitative techniques were used to analyse the data: Reliability assessment, Confirmatory factor analysis (CFA), correlation analysis, independent t-test, analysis of variance (ANOVA), and structural equation modelling (SEM). Main findings: All hypotheses were supported. The results indicate that there is an association between the constructs in the study. Specifically, the relationship between authentic leadership and safety behaviour is mediated by PsyCap and work engagement. The research provides valuable input as significant differences were noted across all constructs and demographic variables, except age. Limitations: The results should be interpreted, bearing in mind that there is limited literature available on the relationship between the constructs in the study when applied to the South African context. Furthermore, the limitations primarily revolved around the research design. Specifically, the questionnaire was completed at one point in time and the use of convenience sampling may be associated with possible sampling bias. In response to the COVID-19 pandemic and lockdown which limited group gatherings and contact, a change in the data collection method was necessary. That is, the data collection method changed from a paper-and-pencil version to the online administration of the questionnaire. This resulted in a six-month delay in the completion of data collection. Finally, the wording of certain items may have contributed to central tendency in responses. Future research: It is suggested that future studies should investigate the relationship between the constructs using larger samples, different occupations, alternative South African industries, and explore the long-term effects of these constructs in the South African workplace by adopting a longitudinal research design. This can also be considered in relation to possible interventions to improve leadership authenticity and increase PsyCap and work engagement, with the intention of mitigating adverse safety events in the construction industry. In addition, future studies should also consider how this relationship can be influenced by different ethnic and cultural groups to gain a better understanding of how differences in ethnicity manifests in the constructs. Researchers should also explore the constructs as a group-level phenomenon and consider explanations from an alternative theoretical framework. , Thesis (PhD) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Barriers of entry for black people from owning game reserves in the Eastern Cape
- Authors: Mazaleni, Zintle
- Date: 2021-12
- Subjects: Game reserves -- South Africa -- Eastern Cape -- Management , Game reserves -- Black people -- South Africa -- Eastern Cape -- Management
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54903 , vital:48469
- Description: The conservation industry was closed in the previous apartheid time from the black native people and only opened for the white people alone (Spierenburg & Brooks, 2014). According to Mokotjomela, Nombewu, and Peinke, 2015, the game transformation industry is in need of being transformed to more young black people; they noted the challenges that are faced by the young black people in being able to own nature reserves. These include the fact that they are landless. Secondly, the land transformation that is done through the Department of Rural Development, Land and Agrarian Reform (DRDLAR) is not given back to the rightful owners with the title deeds which is also a challenge as one cannot develop land when there is no certainty that it is theirs (Turner, 2004). Tourism destinations which include the game reserves attract tourists because of the positive economic impacts such as labour-intensive jobs, foreign exchange, and foreign direct investments that come with tourists and boost small businesses. According to Sifilo and Henama (2017), tourism has been an economic messiah of South Africa and the decline of mining jobs has been mitigated by the growth of jobs in the tourism industry. The Eastern Cape's economy is still characterised by disparities in employment rates, income, service levels, and productivity. Economic growth rates have been modest, in line with the rest of the country. Low growth and high unemployment have created considerable issues for the province, with a notably increased demand for social services. According to the most recent economic data, the province's economy is declining (or at the very least is stagnant): The average yearly change in gross domestic product (GDP) per region (Eastern Cape) was 1% in the preceding five years, but only 0.6 percent in the last year The selection of the qualitative research approach and in particular the use of open-ended questionnaires is because it is the only platform that will allow participants to voice their opinions fully without limits and allow the study not to be limited with the information given by the participants. The first section of the questionnaire aimed at obtaining profile data on the respondents. These include age, gender, ethnicity, home language, educational level and time working in conservation and the tourism sector. Questions 8 – 17 focused on respondents stating no, yes, or maybe to the posed questions and elaborating on their experience and knowledge of the wildlife industry, while questions 18 – 24 mainly focused on gaining and listing opinions of respondents on solution to allow entry for black people into the wildlife industry, as well as giving advice on how government and the private sector can assist in reaching the desired goal. Strongly indicated by the empirical results is the gap between the previously disadvantaged group and the white minority group in the province of the Eastern Cape in the wildlife conservation industry. Shown by the results is the position of the black people in the industry as just servants or employees and not owners or equal shareholders and the lack of women leadership in the industry, as well as young people involvement in the decisions and operations of the industry. The list of barriers had one common barrier identified by almost all respondents as noted by the researcher: the issue of land unavailability for the black people in the province. Communal land does not have title deeds as the land is in the hands of governmental departments and traditional authorities. Conditions stipulated on the game transformation policy of the Eastern Cape state that an individual must be in possession of a title deed to the land. This is but a dream to the black people of the Eastern Cape, especially a title deed to a land big enough to be converted into a game reserve. The empirical results strongly indicate the land ownership as the number one barrier for black people from owning game reserves. , Thesis (MBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Mazaleni, Zintle
- Date: 2021-12
- Subjects: Game reserves -- South Africa -- Eastern Cape -- Management , Game reserves -- Black people -- South Africa -- Eastern Cape -- Management
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54903 , vital:48469
- Description: The conservation industry was closed in the previous apartheid time from the black native people and only opened for the white people alone (Spierenburg & Brooks, 2014). According to Mokotjomela, Nombewu, and Peinke, 2015, the game transformation industry is in need of being transformed to more young black people; they noted the challenges that are faced by the young black people in being able to own nature reserves. These include the fact that they are landless. Secondly, the land transformation that is done through the Department of Rural Development, Land and Agrarian Reform (DRDLAR) is not given back to the rightful owners with the title deeds which is also a challenge as one cannot develop land when there is no certainty that it is theirs (Turner, 2004). Tourism destinations which include the game reserves attract tourists because of the positive economic impacts such as labour-intensive jobs, foreign exchange, and foreign direct investments that come with tourists and boost small businesses. According to Sifilo and Henama (2017), tourism has been an economic messiah of South Africa and the decline of mining jobs has been mitigated by the growth of jobs in the tourism industry. The Eastern Cape's economy is still characterised by disparities in employment rates, income, service levels, and productivity. Economic growth rates have been modest, in line with the rest of the country. Low growth and high unemployment have created considerable issues for the province, with a notably increased demand for social services. According to the most recent economic data, the province's economy is declining (or at the very least is stagnant): The average yearly change in gross domestic product (GDP) per region (Eastern Cape) was 1% in the preceding five years, but only 0.6 percent in the last year The selection of the qualitative research approach and in particular the use of open-ended questionnaires is because it is the only platform that will allow participants to voice their opinions fully without limits and allow the study not to be limited with the information given by the participants. The first section of the questionnaire aimed at obtaining profile data on the respondents. These include age, gender, ethnicity, home language, educational level and time working in conservation and the tourism sector. Questions 8 – 17 focused on respondents stating no, yes, or maybe to the posed questions and elaborating on their experience and knowledge of the wildlife industry, while questions 18 – 24 mainly focused on gaining and listing opinions of respondents on solution to allow entry for black people into the wildlife industry, as well as giving advice on how government and the private sector can assist in reaching the desired goal. Strongly indicated by the empirical results is the gap between the previously disadvantaged group and the white minority group in the province of the Eastern Cape in the wildlife conservation industry. Shown by the results is the position of the black people in the industry as just servants or employees and not owners or equal shareholders and the lack of women leadership in the industry, as well as young people involvement in the decisions and operations of the industry. The list of barriers had one common barrier identified by almost all respondents as noted by the researcher: the issue of land unavailability for the black people in the province. Communal land does not have title deeds as the land is in the hands of governmental departments and traditional authorities. Conditions stipulated on the game transformation policy of the Eastern Cape state that an individual must be in possession of a title deed to the land. This is but a dream to the black people of the Eastern Cape, especially a title deed to a land big enough to be converted into a game reserve. The empirical results strongly indicate the land ownership as the number one barrier for black people from owning game reserves. , Thesis (MBA) -- Faculty of Business and Economic Sciences, 2021
- Full Text:
- Date Issued: 2021-12
Bayesian spatio-temporal zero-inflated mixed models for overdispersion on chronic disease mapping
- Osuji, Georgeleen O https://orcid.org/0000-0002-8408-3928
- Authors: Osuji, Georgeleen O https://orcid.org/0000-0002-8408-3928
- Date: 2021-12
- Subjects: Medical mapping , Bayesian statistical decision theory
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/23644 , vital:58230
- Description: Background: Life expectancy in most developing countries has remarkably increased and decreased in mortality, but under 5 years old mortality has increased due to HIV and Tuberculosis incidence. Many factors have been established to influence the mortality rate among HIV patients and understanding the factors contribution to the risk of under 5-year-old mortality is important for designing appropriate health interventions. Excess zeros usually occur in such HIV mortality count data. Mixed models consisting of count part and zero part are often used to describe the observed excess zero in the data. Poisson models are popular modeling inference, but Negative-Binomial models are more flexible in analyzing count data and dealing with overdispersion. Method: This research proposed to develop two-part hurdle models in analyzing areal zero count data. A spatial Bayesian lognormal-logit hurdle model (BLLHM) with random effects characterizes and cross-spatial dependencies were introduced. The parameter inferences and predictions were evaluated using the Markov Chain Monte Carlo algorithm. The model proposed was applied to HIV-positive under 5-year-old mortality collected from the Eastern Cape Department of Health. Results: Bayesian lognormal-logit hurdle model is selected as the best model fit. It is observed that the total number of HIV patients not on ART-HIVnotTB (0.000612, p <0.000) was positively and statistically significantly associated with the HIV-positive mortality of under 5 years patients. Both CD4 counts were done on newly diagnosed HIV rate (CD4count) and HIV-positive new patients screened for TB rate (HIVTBrate) were negatively and statistically significantly associated with the HIV-positive mortality of under 5 years patients (-0.6294, p = 0.000 and -0.00056, p = 0.0052). However, the covariate HIV positive Tuberculosis Preventive therapy (TPT) uptake rate (HIVandTB) was not statistically significantly associated with the HIV-positive mortality of under 5 years patients (-0.00155, p = 0.5392). Conclusion: The model is flexible to deal with zero-inflated and over-dispersed count data. There is a need to consider the risk of cause-specific under-5-year-old mortality in terms of spatial effects. , Thesis (PhD) -- Faculty of Science and Agriculture, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Osuji, Georgeleen O https://orcid.org/0000-0002-8408-3928
- Date: 2021-12
- Subjects: Medical mapping , Bayesian statistical decision theory
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/23644 , vital:58230
- Description: Background: Life expectancy in most developing countries has remarkably increased and decreased in mortality, but under 5 years old mortality has increased due to HIV and Tuberculosis incidence. Many factors have been established to influence the mortality rate among HIV patients and understanding the factors contribution to the risk of under 5-year-old mortality is important for designing appropriate health interventions. Excess zeros usually occur in such HIV mortality count data. Mixed models consisting of count part and zero part are often used to describe the observed excess zero in the data. Poisson models are popular modeling inference, but Negative-Binomial models are more flexible in analyzing count data and dealing with overdispersion. Method: This research proposed to develop two-part hurdle models in analyzing areal zero count data. A spatial Bayesian lognormal-logit hurdle model (BLLHM) with random effects characterizes and cross-spatial dependencies were introduced. The parameter inferences and predictions were evaluated using the Markov Chain Monte Carlo algorithm. The model proposed was applied to HIV-positive under 5-year-old mortality collected from the Eastern Cape Department of Health. Results: Bayesian lognormal-logit hurdle model is selected as the best model fit. It is observed that the total number of HIV patients not on ART-HIVnotTB (0.000612, p <0.000) was positively and statistically significantly associated with the HIV-positive mortality of under 5 years patients. Both CD4 counts were done on newly diagnosed HIV rate (CD4count) and HIV-positive new patients screened for TB rate (HIVTBrate) were negatively and statistically significantly associated with the HIV-positive mortality of under 5 years patients (-0.6294, p = 0.000 and -0.00056, p = 0.0052). However, the covariate HIV positive Tuberculosis Preventive therapy (TPT) uptake rate (HIVandTB) was not statistically significantly associated with the HIV-positive mortality of under 5 years patients (-0.00155, p = 0.5392). Conclusion: The model is flexible to deal with zero-inflated and over-dispersed count data. There is a need to consider the risk of cause-specific under-5-year-old mortality in terms of spatial effects. , Thesis (PhD) -- Faculty of Science and Agriculture, 2021
- Full Text:
- Date Issued: 2021-12
Beneficiation of pyrolysis-derived waste tyre char by blending with torrefied wood and microalgae to produce solid fuel
- Authors: Dube, Cleopatra Thulani
- Date: 2021-12
- Subjects: Pyrolysis , Solid fuel reactors
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58439 , vital:59241
- Description: he thermal decomposition of waste tyres via pyrolysis is considered to be amongst the most promising methods of recycling tyres due to its minimal environmental impact (in terms of reduction in pollution). During pyrolysis, tyres are thermally degraded in an inert environment to produce gas, oil and char. The gas and oil have promising commercialization prospects while the char remains a pollutant despite the strides made in a lot of research to upgrade the char to carbon black, activated carbon and even for reuse as a filler in tyre manufacture. For pyrolysis to be profitable, or worthy of investments, all three of its products (oil, char and gas) need to be valorised. Pyrolysis-derived tyre chars (PT-char) have an energy value equivalent to high rank coals, however, the use of PT char as a solid fuel is uncommon due to the high contents of sulphur and mineral matter as well as low volatile matter content of the PT-char. As such, the combustion of PT-char is characterised by high ignition temperature, low thermal reactivity, and no flame formation due to the low amounts of volatile matter. On the other hand, biomass are clean, renewable feedstock, having low sulphur and mineral matter contents, as well as high thermal reactivity. The blending of PT-char with biomass could potentially improve the combustion properties of PT-char and minimise the release of toxic emissions from the char, and thus, could make PT-char suitable for use as a fuel source. In this study, PT-char was blended with torrefied wood and microalgae biomass to demonstrate the suitability of using PT-char-biomass-fuel blend as an energy feedstock. To this effect, a mixture design of experiments was used to formulate the PT-char biomass blends and regression analysis was employed to select an optimum blend formulation for the combustion and mechanical properties of the blends. Proximate analysis results showed a non-linear increase in the volatile matter and a non-linear decrease in the fixed carbon and ash yield as the biomass ratio increased. The calorific value also increased on an additive basis with increasing biomass proportion. The elemental analysis results showed a decrease in the calcium, zinc and bromine contents and an increase in the potassium and iron contents increased with increasing biomass proportion. Likewise, the sulphur content decreased while the oxygen, hydrogen and nitrogen contents increased with increasing biomass ratio. vi Thus, the fuel properties of the blends improved with increasing biomass ratio and without compromising the calorific value of the PT-char. Moreover, the TG-MS analysis showed that the PT-char and the respective blends did not show any release SO2 up to 650°C. Thus, making the fuel suitable for use in low temperature applications such as household and certain boilers. The results of the regression analysis showed that the blend formulation with the highest proportions of biomass, thus C55-T30-M15, is the optimum blend to produce a solid fuel with a low initial decomposition (214°C) and char ignition temperatures (532°C) as well as maximum burn-out temperature (640°C). In essence, the high thermal reactivity of PT-char is improved when both biomasses are loaded at maximum ratios as per the experimental design. The results of the MS showed a decrease in CO2 and NO2 emissions with increasing biomass proportion. The optimum blend (C55-T30-M15) was found to have a comparably higher gross calorific value (26 MJ/kg), lower sulphur content (1.1 wt.%), low ash yield (11wt.%) and lower concentration of minerals (i.e. zinc) than raw PT-char. In addition, the volatile matter content of the blend (20 wt.%) was found to be higher than that of PT-char and the ignition temperature of the optimum fuel blend was relatively lower and its burnout temperature higher than that of PT char. The MS results revealed that the CO2 and NO2 emissions were higher in the optimum blend than the PT-char. The mechanical properties of the pellets; impact resistance and compressive strength increased with increasing biomass blending ratio and even more so with increasing microalgae ratio. The C55-T30-M15 and C75-T10-M15 were selected as optimum blends using regression analysis and both blends exceeded the benchmark for mechanical properties except for water resistance. The blending did not improve the water resistance and all the blends did not meet the minimum threshold for water resistance. Overall, the blending of PT-char with torrefied wood and microalgae biomass has shown to improve the fuel properties PT-char, and therefore, making it a suitable potential fuel source. , Thesis (MSc) -- Faculty of Science, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Dube, Cleopatra Thulani
- Date: 2021-12
- Subjects: Pyrolysis , Solid fuel reactors
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58439 , vital:59241
- Description: he thermal decomposition of waste tyres via pyrolysis is considered to be amongst the most promising methods of recycling tyres due to its minimal environmental impact (in terms of reduction in pollution). During pyrolysis, tyres are thermally degraded in an inert environment to produce gas, oil and char. The gas and oil have promising commercialization prospects while the char remains a pollutant despite the strides made in a lot of research to upgrade the char to carbon black, activated carbon and even for reuse as a filler in tyre manufacture. For pyrolysis to be profitable, or worthy of investments, all three of its products (oil, char and gas) need to be valorised. Pyrolysis-derived tyre chars (PT-char) have an energy value equivalent to high rank coals, however, the use of PT char as a solid fuel is uncommon due to the high contents of sulphur and mineral matter as well as low volatile matter content of the PT-char. As such, the combustion of PT-char is characterised by high ignition temperature, low thermal reactivity, and no flame formation due to the low amounts of volatile matter. On the other hand, biomass are clean, renewable feedstock, having low sulphur and mineral matter contents, as well as high thermal reactivity. The blending of PT-char with biomass could potentially improve the combustion properties of PT-char and minimise the release of toxic emissions from the char, and thus, could make PT-char suitable for use as a fuel source. In this study, PT-char was blended with torrefied wood and microalgae biomass to demonstrate the suitability of using PT-char-biomass-fuel blend as an energy feedstock. To this effect, a mixture design of experiments was used to formulate the PT-char biomass blends and regression analysis was employed to select an optimum blend formulation for the combustion and mechanical properties of the blends. Proximate analysis results showed a non-linear increase in the volatile matter and a non-linear decrease in the fixed carbon and ash yield as the biomass ratio increased. The calorific value also increased on an additive basis with increasing biomass proportion. The elemental analysis results showed a decrease in the calcium, zinc and bromine contents and an increase in the potassium and iron contents increased with increasing biomass proportion. Likewise, the sulphur content decreased while the oxygen, hydrogen and nitrogen contents increased with increasing biomass ratio. vi Thus, the fuel properties of the blends improved with increasing biomass ratio and without compromising the calorific value of the PT-char. Moreover, the TG-MS analysis showed that the PT-char and the respective blends did not show any release SO2 up to 650°C. Thus, making the fuel suitable for use in low temperature applications such as household and certain boilers. The results of the regression analysis showed that the blend formulation with the highest proportions of biomass, thus C55-T30-M15, is the optimum blend to produce a solid fuel with a low initial decomposition (214°C) and char ignition temperatures (532°C) as well as maximum burn-out temperature (640°C). In essence, the high thermal reactivity of PT-char is improved when both biomasses are loaded at maximum ratios as per the experimental design. The results of the MS showed a decrease in CO2 and NO2 emissions with increasing biomass proportion. The optimum blend (C55-T30-M15) was found to have a comparably higher gross calorific value (26 MJ/kg), lower sulphur content (1.1 wt.%), low ash yield (11wt.%) and lower concentration of minerals (i.e. zinc) than raw PT-char. In addition, the volatile matter content of the blend (20 wt.%) was found to be higher than that of PT-char and the ignition temperature of the optimum fuel blend was relatively lower and its burnout temperature higher than that of PT char. The MS results revealed that the CO2 and NO2 emissions were higher in the optimum blend than the PT-char. The mechanical properties of the pellets; impact resistance and compressive strength increased with increasing biomass blending ratio and even more so with increasing microalgae ratio. The C55-T30-M15 and C75-T10-M15 were selected as optimum blends using regression analysis and both blends exceeded the benchmark for mechanical properties except for water resistance. The blending did not improve the water resistance and all the blends did not meet the minimum threshold for water resistance. Overall, the blending of PT-char with torrefied wood and microalgae biomass has shown to improve the fuel properties PT-char, and therefore, making it a suitable potential fuel source. , Thesis (MSc) -- Faculty of Science, 2021
- Full Text:
- Date Issued: 2021-12