A flight of fancy in the Chorister Robin-Chat (Cossypha dichroa) : an isotopic standpoint
- Wolmarans, Milena Helena Louise
- Authors: Wolmarans, Milena Helena Louise
- Date: 2015
- Subjects: Muscicapidae -- South Africa , Muscicapidae -- Food , Muscicapidae -- Habitat , Muscicapidae -- Habitat -- Conservation , Forest birds -- South Africa , Isotopes , Stable isotope tracers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5920 , http://hdl.handle.net/10962/d1017207
- Description: Forested areas have been cited for their highly diverse floral and faunal assemblages, which are currently under threat from anthropogenic activities that restrict their range and deplete the resources produced within these naturally fragmented patches. Historically, up to 67 percent of avifaunal species associated with well-treed areas have undergone localised extinctions, consequentially affecting biodiversity as a measure of species richness and ecosystem functionality. To date, more than 900 of the bird species affiliated with forests are under threat and despite the theory surrounding functional redundancy, the mass extinction that is currently underway poses considerable limitations on the ecological integrity of these biomes. In South Africa, indigenous forest (one of the rarest biomes), occurs predominantly in small isolated patches along the eastern escarpment. With mountainous terrain emphasised as ‘prominent hotspots of extinction’, the limited dispersal and habitat sensitivity of montane forest fauna renders these species more prone to localised extinctions. BirdLife International, the IUCN and SABAP2 all indicate reductions in the range and abundance of the Chorister Robin-Chat (Cossypha dichroa) - an endemic forest specialist that is reported to move seasonally between high-altitude forest patches where they breed in summer, and lowland coastal forests where they overwinter. Beyond diet, body morphology and vocalisations, much of the information available on the altitudinal movements of C. dichroa is based on secondary sources and the assumptions therein. This study aimed to investigate the potential utilisation of δ13C and δ15N stable isotopes in determining the dietary niche width and altitudinal movements of C. dichroa. Feathers obtained in forested patches of the Limpopo, KwaZulu-Natal and Eastern Cape provinces exhibited a wide trophic niche width and generalised diet. Strong regional separation is apparent in the isotopic signatures suggesting little movement between provinces. A comparison of 13C-isotopes showed minimal variation that point to a uniformity in the carbon-base utilised by C. dichroa across their range. The 15N-signatures obtained in Limpopo, however, revealed a distinct trophic segregation between the northern-most Chorister populations and their southern counterparts. No altitudinal movements were detected in the isotopic signatures of recaptured Choristers, but more research is needed to investigate the long-term accuracy of these results and the breeding potential of resident Choristers in lowland coastal forests; especially when considering the reduced range and abundance reported for this endemic species.
- Full Text:
- Date Issued: 2015
- Authors: Wolmarans, Milena Helena Louise
- Date: 2015
- Subjects: Muscicapidae -- South Africa , Muscicapidae -- Food , Muscicapidae -- Habitat , Muscicapidae -- Habitat -- Conservation , Forest birds -- South Africa , Isotopes , Stable isotope tracers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5920 , http://hdl.handle.net/10962/d1017207
- Description: Forested areas have been cited for their highly diverse floral and faunal assemblages, which are currently under threat from anthropogenic activities that restrict their range and deplete the resources produced within these naturally fragmented patches. Historically, up to 67 percent of avifaunal species associated with well-treed areas have undergone localised extinctions, consequentially affecting biodiversity as a measure of species richness and ecosystem functionality. To date, more than 900 of the bird species affiliated with forests are under threat and despite the theory surrounding functional redundancy, the mass extinction that is currently underway poses considerable limitations on the ecological integrity of these biomes. In South Africa, indigenous forest (one of the rarest biomes), occurs predominantly in small isolated patches along the eastern escarpment. With mountainous terrain emphasised as ‘prominent hotspots of extinction’, the limited dispersal and habitat sensitivity of montane forest fauna renders these species more prone to localised extinctions. BirdLife International, the IUCN and SABAP2 all indicate reductions in the range and abundance of the Chorister Robin-Chat (Cossypha dichroa) - an endemic forest specialist that is reported to move seasonally between high-altitude forest patches where they breed in summer, and lowland coastal forests where they overwinter. Beyond diet, body morphology and vocalisations, much of the information available on the altitudinal movements of C. dichroa is based on secondary sources and the assumptions therein. This study aimed to investigate the potential utilisation of δ13C and δ15N stable isotopes in determining the dietary niche width and altitudinal movements of C. dichroa. Feathers obtained in forested patches of the Limpopo, KwaZulu-Natal and Eastern Cape provinces exhibited a wide trophic niche width and generalised diet. Strong regional separation is apparent in the isotopic signatures suggesting little movement between provinces. A comparison of 13C-isotopes showed minimal variation that point to a uniformity in the carbon-base utilised by C. dichroa across their range. The 15N-signatures obtained in Limpopo, however, revealed a distinct trophic segregation between the northern-most Chorister populations and their southern counterparts. No altitudinal movements were detected in the isotopic signatures of recaptured Choristers, but more research is needed to investigate the long-term accuracy of these results and the breeding potential of resident Choristers in lowland coastal forests; especially when considering the reduced range and abundance reported for this endemic species.
- Full Text:
- Date Issued: 2015
Occupational health and safety and industrial relations in the South African construction industry : case studies of selected construction firms in Grahamstown
- Nene, Sinenhlanhla Sindisiwe
- Authors: Nene, Sinenhlanhla Sindisiwe
- Date: 2015
- Subjects: Industrial safety -- South Africa , Industrial relations -- South Africa , Construction industry -- South Africa -- Grahamstown , Management -- Employee participation
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3401 , http://hdl.handle.net/10962/d1018663
- Description: The construction industry is one of the most dangerous industries in the world, with many workplace fatalities every day. The existence of legislation that governs Occupational Health and Safety (OHS) is an intervention to ensure that all governments, employers and employees play their part in establishing and implementing policies that will help secure healthy and safe working environments. The study is qualitative and with the help of an interview guide, semistructured interviews were used to collect the data. The respondents were selected using purposive and snowball sampling methods. Ten managers from ten (five small, five large) construction firms, two employees from each firm, and the OHS inspector from the Department of Labour in Grahamstown were interviewed. Having explored management’s practices, communication methods, training and distribution of information, employee representation and participation, and industrial relations, several conclusions were reached. During the study it was found that there are a number of obstacles that are hampering effective OHS in the construction industry. Some of these include; management’s lack of commitment to a participatory approach in OHS decision-making, limited resources to invest adequately in OHS, and the lack of sufficient trade union involvement. In addition, we know very little about OHS in the construction industry, and the mere existence of OHS legislation does not help reduce the risks associated with construction work, especially when there is a shortage of skilled personnel to enforce the legislation and regulations.
- Full Text:
- Date Issued: 2015
- Authors: Nene, Sinenhlanhla Sindisiwe
- Date: 2015
- Subjects: Industrial safety -- South Africa , Industrial relations -- South Africa , Construction industry -- South Africa -- Grahamstown , Management -- Employee participation
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3401 , http://hdl.handle.net/10962/d1018663
- Description: The construction industry is one of the most dangerous industries in the world, with many workplace fatalities every day. The existence of legislation that governs Occupational Health and Safety (OHS) is an intervention to ensure that all governments, employers and employees play their part in establishing and implementing policies that will help secure healthy and safe working environments. The study is qualitative and with the help of an interview guide, semistructured interviews were used to collect the data. The respondents were selected using purposive and snowball sampling methods. Ten managers from ten (five small, five large) construction firms, two employees from each firm, and the OHS inspector from the Department of Labour in Grahamstown were interviewed. Having explored management’s practices, communication methods, training and distribution of information, employee representation and participation, and industrial relations, several conclusions were reached. During the study it was found that there are a number of obstacles that are hampering effective OHS in the construction industry. Some of these include; management’s lack of commitment to a participatory approach in OHS decision-making, limited resources to invest adequately in OHS, and the lack of sufficient trade union involvement. In addition, we know very little about OHS in the construction industry, and the mere existence of OHS legislation does not help reduce the risks associated with construction work, especially when there is a shortage of skilled personnel to enforce the legislation and regulations.
- Full Text:
- Date Issued: 2015
Teacher leadership practice : a case study of a public primary school in a semi-urban area of the Otjozondjupa Region, central Namibia
- Authors: Hanghuwo, Maria Nahambo
- Date: 2015
- Subjects: Democracy and education -- Study and teaching (Elementary) -- Namibia , Educational leadership , Teacher participation in administration
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2030 , http://hdl.handle.net/10962/d1017341
- Description: The education system in Namibia was shaped by the policies located within the framework of the apartheid ideology. Since it gained its independence in 1990, the government positioned education at the top of the national priorities. Thus, there has been a growing realisation of the importance of more democratic forms of leadership in the education system for the country to be able to cater for a democratic society. Amongst others, teachers became active creators and managers of the learning outcomes. In addition, teachers are regarded as agents of change and the driving force for productive teaching and learning. Literature describes how the management in schools has been redistributing authority and power so that a culture of teacher leadership in school communities can grow. More importantly, school improvement depends more on the active involvement of teacher leaders as it is realised that people in formal positions cannot do everything. In this line this study investigated the understanding of teachers and members of management of teacher leadership practice and it further identified the structural and cultural factors which enabled and inhibited this practice in a primary school. This study is a case study of a Primary school in a semi-urban area of Otjozondjupa Region, a central part of Namibia. This study was conducted in the interpretive paradigm and it is a qualitative case in nature, employing semi-structured interviews, observation and document analysis. Triangulation over the data revealed that respondents have an understanding of the concept and that all teachers are involved in leadership roles at school which are more strongly found in the classroom and through involvement with other teachers. Teacher leadership roles at the case study school also occur within the whole school with some limitations and also extend beyond the school. Grant’s (2008) model of teacher leadership was used to analyse the data. The study suggested some hindrances and supporting factors of teacher leadership. The findings suggested that teacher leadership is understood at the case study school and that they experienced factors that enabled and hindered this practice at different stages. Enabling factors included the school structure, further studies and workshops attended, while teacher leadership is impeded by teachers’ unwillingness to collaborate with others and the platoon system. The study recommends future large scale studies, including at secondary schools, so that a broader sense of teacher leadership may emerge.
- Full Text:
- Date Issued: 2015
- Authors: Hanghuwo, Maria Nahambo
- Date: 2015
- Subjects: Democracy and education -- Study and teaching (Elementary) -- Namibia , Educational leadership , Teacher participation in administration
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2030 , http://hdl.handle.net/10962/d1017341
- Description: The education system in Namibia was shaped by the policies located within the framework of the apartheid ideology. Since it gained its independence in 1990, the government positioned education at the top of the national priorities. Thus, there has been a growing realisation of the importance of more democratic forms of leadership in the education system for the country to be able to cater for a democratic society. Amongst others, teachers became active creators and managers of the learning outcomes. In addition, teachers are regarded as agents of change and the driving force for productive teaching and learning. Literature describes how the management in schools has been redistributing authority and power so that a culture of teacher leadership in school communities can grow. More importantly, school improvement depends more on the active involvement of teacher leaders as it is realised that people in formal positions cannot do everything. In this line this study investigated the understanding of teachers and members of management of teacher leadership practice and it further identified the structural and cultural factors which enabled and inhibited this practice in a primary school. This study is a case study of a Primary school in a semi-urban area of Otjozondjupa Region, a central part of Namibia. This study was conducted in the interpretive paradigm and it is a qualitative case in nature, employing semi-structured interviews, observation and document analysis. Triangulation over the data revealed that respondents have an understanding of the concept and that all teachers are involved in leadership roles at school which are more strongly found in the classroom and through involvement with other teachers. Teacher leadership roles at the case study school also occur within the whole school with some limitations and also extend beyond the school. Grant’s (2008) model of teacher leadership was used to analyse the data. The study suggested some hindrances and supporting factors of teacher leadership. The findings suggested that teacher leadership is understood at the case study school and that they experienced factors that enabled and hindered this practice at different stages. Enabling factors included the school structure, further studies and workshops attended, while teacher leadership is impeded by teachers’ unwillingness to collaborate with others and the platoon system. The study recommends future large scale studies, including at secondary schools, so that a broader sense of teacher leadership may emerge.
- Full Text:
- Date Issued: 2015
The South African economy and internationally fuelled business cycles: an econometric analysis
- Authors: Conradie, Tiaan
- Date: 2015
- Subjects: Business cycles -- Econometric models , Econometrics
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/4354 , vital:20588
- Description: The objective of this study is to understand the dynamics of international monetary policy and the relationship that exists between larger more developed economies and smaller less developed economies within a policy context. The 2008 financial crisis has caused intense revival of Austrian economics due to the monetary nature of the recession caused as a subsequent effect of the stock/housing market collapse that occurred in 2007. One factor of the 2008 financial crisis that created intense concern was the extent to which the slowdown in economic activity was able to be transmitted across international borders. The South African economy was not isolated from the financial crisis by any means and experienced a significant slowdown in economic growth. By making use of data collected from the Federal Reserve Bank of St. Louis and the appropriate econometric techniques, a model is developed to study the dynamics between United States monetary policy and the South African economy. The Austrian School provides a sound theoretical framework that allows for the specification of testable propositions to verify the validity of an “Austrian” internationally transmitted business cycle. Using United States money supply, South African private consumption, South African gross fixed capital formation and the South African current account, a vector autoregressive model is specified to analyse the dynamics behind the United States and South African economy. The results of the empirical test all confirm the theoretical prescriptions developed in the literature review that monetary growth in the United States raise consumption, investment and improve the current account balance in the South African economy. This is a novel result for this study as it confirms that a large central economy has the ability to trigger economic expansions in a peripheral economy. This study further points out the inefficiencies associated with Keynesian style policy making and propagates for a movement towards a more prudent Austrian approach. Keynesian policy making through demand oriented policies have historically been more concerned with “curing” economic instability rather than preventing it. In light of this, the need for economic reform specifically within the manner in which monetary policy is conducted is evident. Aggressive monetary policy in the wake of economic slowdown is no longer effective at creating a sustainable and stable economic environment. A movement away from the monopolization of money and central economic decision making is necessary if the global economy wishes to reach economic permanence.
- Full Text:
- Date Issued: 2015
- Authors: Conradie, Tiaan
- Date: 2015
- Subjects: Business cycles -- Econometric models , Econometrics
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/4354 , vital:20588
- Description: The objective of this study is to understand the dynamics of international monetary policy and the relationship that exists between larger more developed economies and smaller less developed economies within a policy context. The 2008 financial crisis has caused intense revival of Austrian economics due to the monetary nature of the recession caused as a subsequent effect of the stock/housing market collapse that occurred in 2007. One factor of the 2008 financial crisis that created intense concern was the extent to which the slowdown in economic activity was able to be transmitted across international borders. The South African economy was not isolated from the financial crisis by any means and experienced a significant slowdown in economic growth. By making use of data collected from the Federal Reserve Bank of St. Louis and the appropriate econometric techniques, a model is developed to study the dynamics between United States monetary policy and the South African economy. The Austrian School provides a sound theoretical framework that allows for the specification of testable propositions to verify the validity of an “Austrian” internationally transmitted business cycle. Using United States money supply, South African private consumption, South African gross fixed capital formation and the South African current account, a vector autoregressive model is specified to analyse the dynamics behind the United States and South African economy. The results of the empirical test all confirm the theoretical prescriptions developed in the literature review that monetary growth in the United States raise consumption, investment and improve the current account balance in the South African economy. This is a novel result for this study as it confirms that a large central economy has the ability to trigger economic expansions in a peripheral economy. This study further points out the inefficiencies associated with Keynesian style policy making and propagates for a movement towards a more prudent Austrian approach. Keynesian policy making through demand oriented policies have historically been more concerned with “curing” economic instability rather than preventing it. In light of this, the need for economic reform specifically within the manner in which monetary policy is conducted is evident. Aggressive monetary policy in the wake of economic slowdown is no longer effective at creating a sustainable and stable economic environment. A movement away from the monopolization of money and central economic decision making is necessary if the global economy wishes to reach economic permanence.
- Full Text:
- Date Issued: 2015
Regolith mapping and gold geochemical anomalies in the Siguiri Gold Mine of AngloGold Ashanti, Guinea, West Africa
- Authors: Bah, Boubacar
- Date: 2015
- Subjects: AngloGold Ashanti Ltd. , Regolith -- Guinea -- Siguiri (Region) , Gold mines and mining -- Guinea -- Siguiri (Region) , Geochemical surveys -- Guinea -- Siguiri (Region) , Soil surveys -- Geochemical methods -- Guinea -- Siguiri (Region) , Kriging
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5090 , http://hdl.handle.net/10962/d1019878
- Description: Gold exploration in the laterite terrains of the Siguiri basin (Guinea-West Africa) is discussed in this thesis. It seeks to propose and develop effective and reliable geochemical exploration techniques applied in such laterite terrains. The study is also intended to investigate and provide some geological clues as to why, in some target areas, the reconnaissance test drilling across the geochemical anomalies couldn’t intersect economic gold mineralisation. Targets were generated based on soil geochemical results, some of which were drilled without delivering economic discoveries even on areas with strong and consistent geochemical signatures. To find the failure and define the appropriate methods to be used is the core of the thesis. More importantly, the geological observation is aimed at sourcing and establishing the nature and validity of geochemical anomalies within the license area and their relationship with the underlying lithologies and structural networks. The geological field work conducted during this study is mostly based on regolith and surface geological mapping. The thick laterite cover, deep weathering, bedrock geology, gold geochemistry (the gold geochemical anomalous results are defined according to historical data before 2007), soil formations and variations in climate conditions are emphasized to illustrate the importance of mineral element mobility and dispersion in the weathering profiles. The knowledge and experience in regolith geochemistry and regolith mapping provide the advantage to exploration geologists. The depletion of ore resources and reserves in Siguiri and the continuous decline of the gold price in comparison to the complexity of exploring for gold are demanding more scientific-related thoughts and techniques to be integrated in the available geological, geochemical and geophysical information so as to reduce costs. The integration of good exploration strategy and technique may result in the possibility of making viable discoveries in this highly competitive geological environment where the mineral resources become depleted every day.
- Full Text:
- Date Issued: 2015
- Authors: Bah, Boubacar
- Date: 2015
- Subjects: AngloGold Ashanti Ltd. , Regolith -- Guinea -- Siguiri (Region) , Gold mines and mining -- Guinea -- Siguiri (Region) , Geochemical surveys -- Guinea -- Siguiri (Region) , Soil surveys -- Geochemical methods -- Guinea -- Siguiri (Region) , Kriging
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5090 , http://hdl.handle.net/10962/d1019878
- Description: Gold exploration in the laterite terrains of the Siguiri basin (Guinea-West Africa) is discussed in this thesis. It seeks to propose and develop effective and reliable geochemical exploration techniques applied in such laterite terrains. The study is also intended to investigate and provide some geological clues as to why, in some target areas, the reconnaissance test drilling across the geochemical anomalies couldn’t intersect economic gold mineralisation. Targets were generated based on soil geochemical results, some of which were drilled without delivering economic discoveries even on areas with strong and consistent geochemical signatures. To find the failure and define the appropriate methods to be used is the core of the thesis. More importantly, the geological observation is aimed at sourcing and establishing the nature and validity of geochemical anomalies within the license area and their relationship with the underlying lithologies and structural networks. The geological field work conducted during this study is mostly based on regolith and surface geological mapping. The thick laterite cover, deep weathering, bedrock geology, gold geochemistry (the gold geochemical anomalous results are defined according to historical data before 2007), soil formations and variations in climate conditions are emphasized to illustrate the importance of mineral element mobility and dispersion in the weathering profiles. The knowledge and experience in regolith geochemistry and regolith mapping provide the advantage to exploration geologists. The depletion of ore resources and reserves in Siguiri and the continuous decline of the gold price in comparison to the complexity of exploring for gold are demanding more scientific-related thoughts and techniques to be integrated in the available geological, geochemical and geophysical information so as to reduce costs. The integration of good exploration strategy and technique may result in the possibility of making viable discoveries in this highly competitive geological environment where the mineral resources become depleted every day.
- Full Text:
- Date Issued: 2015
Organizational culture in the South African construction industry : effects on work-life balance and individual performance
- Dlamini, Gcebekile Tikhokhile
- Authors: Dlamini, Gcebekile Tikhokhile
- Date: 2015
- Subjects: Construction industry -- South Africa , Work-life balance -- South Africa , Corporate culture -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9702 , http://hdl.handle.net/10948/d1018513
- Description: The South African construction industry plays an important role in the economy and overall development of the country, with respect to its total fiscal contribution and the total number of people who are employed. In addition, it is a major contributor to infrastructure development. However, the human resource base within this industry is confronted with a plethora of challenges that are inherent to the construction industry. These manifest themselves in stressful working conditions and long working hours, labour intensive jobs, reduced job security due to job losses and short-term projects, and the feeble health and safety (H&S) standards. Together with a variety of socio-economic and political issues, these challenges form a perceived and broad organisational culture of this industry, which impacts on the industry‟s productivity. As construction management efforts in the development of the human resources base increase, the industry recognises that work-life balance is an important and critical issue in the 21st century. Construction management is a discipline that embodies two interdependent dimensions; the management of the business of construction and the management of projects. Of the latter, the key principles thereof are, as part of a management strategy, planning, organizing, leading, controlling and coordinating projects. To achieve these strategic components, an effective human resource base is required. Work-life balance is therefore a management issue and organizational culture sets a backdrop from which it can be understood. This study focused on the status of the organisational culture of the production establishments that form part of the construction industry and the manner in which it manifests on the work-life balance of the workers. Furthermore, the correlation between work-life balance and individual work performance was examined. An exploratory research approach was adopted and the research technique followed an interview protocol. The main findings demonstrate that the South African construction industry is predominantly a clan culture with minor characteristics of the hierarchy, adhocracy and market cultures. Furthermore, work-life balance is difficult to attain and it influences individual work performance. The main conclusion is that organizational culture in construction firms is imbalanced. Thus, the main recommendation is that the industry adopts a balanced organizational culture and modern human resource practices.
- Full Text:
- Date Issued: 2015
- Authors: Dlamini, Gcebekile Tikhokhile
- Date: 2015
- Subjects: Construction industry -- South Africa , Work-life balance -- South Africa , Corporate culture -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9702 , http://hdl.handle.net/10948/d1018513
- Description: The South African construction industry plays an important role in the economy and overall development of the country, with respect to its total fiscal contribution and the total number of people who are employed. In addition, it is a major contributor to infrastructure development. However, the human resource base within this industry is confronted with a plethora of challenges that are inherent to the construction industry. These manifest themselves in stressful working conditions and long working hours, labour intensive jobs, reduced job security due to job losses and short-term projects, and the feeble health and safety (H&S) standards. Together with a variety of socio-economic and political issues, these challenges form a perceived and broad organisational culture of this industry, which impacts on the industry‟s productivity. As construction management efforts in the development of the human resources base increase, the industry recognises that work-life balance is an important and critical issue in the 21st century. Construction management is a discipline that embodies two interdependent dimensions; the management of the business of construction and the management of projects. Of the latter, the key principles thereof are, as part of a management strategy, planning, organizing, leading, controlling and coordinating projects. To achieve these strategic components, an effective human resource base is required. Work-life balance is therefore a management issue and organizational culture sets a backdrop from which it can be understood. This study focused on the status of the organisational culture of the production establishments that form part of the construction industry and the manner in which it manifests on the work-life balance of the workers. Furthermore, the correlation between work-life balance and individual work performance was examined. An exploratory research approach was adopted and the research technique followed an interview protocol. The main findings demonstrate that the South African construction industry is predominantly a clan culture with minor characteristics of the hierarchy, adhocracy and market cultures. Furthermore, work-life balance is difficult to attain and it influences individual work performance. The main conclusion is that organizational culture in construction firms is imbalanced. Thus, the main recommendation is that the industry adopts a balanced organizational culture and modern human resource practices.
- Full Text:
- Date Issued: 2015
Recycled water usage in peri-urban agriculture : an examination of its socio-economic and environmental benefits in Port Elizabeth
- Authors: Makinana, Anazo
- Date: 2015
- Subjects: Water reuse -- South Africa -- Eastern Cape Water reuse -- Economic aspects -- South Africa Water reuse -- Environmental aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5719 , vital:29367
- Description: This study examines whether recycled water (specifically grey water) is used in peri-urban agriculture in greater Port Elizabeth. It also investigates the socio-economic as well as environmental benefits of using recycled water in peri-urban agriculture. Community perceptions and narratives about the use of recycled water for farming purposes were also investigated. Study respondents were purposively selected from Motherwell and Uitenhage in Port Elizabeth. A qualitative research methodology and methods were used. This involved using purposive sampling to sample, select and interview 22 respondents and eight key informants. All the respondents were interviewed using in-depth semi-structured interviews. The study found that while many respondents have heard about water recycling, they are however not using recycled grey water for their peri-urban farming activities. Instead, peri-urban farmers continue to use water supplied by the municipality. Recycled water is mostly used for watering sport fields around Port Elizabeth. This continued usage of municipal water (instead of recycled water) is not only costly to the municipality but the individual farmers as well. The respondents were however aware of the benefits of using recycled water. These include economic (money saved from not paying irrigation water bills), environmental (nutrient contents found in recycled water) and socio-economic (conserving fresh available for use in other community purposes). The study recommends that the Nelson Mandela Metro Municipality should do more (through educational and environmental campaigns) to encourage peri-urban farmers to use recycled water in their farming activities.
- Full Text:
- Date Issued: 2015
- Authors: Makinana, Anazo
- Date: 2015
- Subjects: Water reuse -- South Africa -- Eastern Cape Water reuse -- Economic aspects -- South Africa Water reuse -- Environmental aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5719 , vital:29367
- Description: This study examines whether recycled water (specifically grey water) is used in peri-urban agriculture in greater Port Elizabeth. It also investigates the socio-economic as well as environmental benefits of using recycled water in peri-urban agriculture. Community perceptions and narratives about the use of recycled water for farming purposes were also investigated. Study respondents were purposively selected from Motherwell and Uitenhage in Port Elizabeth. A qualitative research methodology and methods were used. This involved using purposive sampling to sample, select and interview 22 respondents and eight key informants. All the respondents were interviewed using in-depth semi-structured interviews. The study found that while many respondents have heard about water recycling, they are however not using recycled grey water for their peri-urban farming activities. Instead, peri-urban farmers continue to use water supplied by the municipality. Recycled water is mostly used for watering sport fields around Port Elizabeth. This continued usage of municipal water (instead of recycled water) is not only costly to the municipality but the individual farmers as well. The respondents were however aware of the benefits of using recycled water. These include economic (money saved from not paying irrigation water bills), environmental (nutrient contents found in recycled water) and socio-economic (conserving fresh available for use in other community purposes). The study recommends that the Nelson Mandela Metro Municipality should do more (through educational and environmental campaigns) to encourage peri-urban farmers to use recycled water in their farming activities.
- Full Text:
- Date Issued: 2015
Exploring the development of an integrated, participative, water quality management process for the Crocodile River catchment, focusing on the sugar industry
- Authors: Sahula, Asiphe
- Date: 2015
- Subjects: Water quality management -- South Africa -- Krokodilrivier (Mpumalanga) , Watersheds -- South Africa -- Krokodilrivier (Mpumalanga) , Integrated water development -- South Africa -- Krokodilrivier (Mpumalanga) , Water quality management -- Social aspects -- South Africa -- Krokodilrivier (Mpumalanga) , Social responsibility of business -- South Africa -- Krokodilrivier (Mpumalanga) , Water quality -- South Africa -- Krokodilrivier (Mpumalanga)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:6051 , http://hdl.handle.net/10962/d1017876
- Description: Water quality deterioration is reaching crisis proportions in South Africa. Many South African catchments are over-allocated, and decreasing volumes of source water mean increasing concentrations of pollutants. The Crocodile River Catchment in the Mpumalanga province in South Africa was identified through previous research, as a catchment faced with deteriorating source water quality for water users in the catchment. Poor source water quality has become a sufficiently acute concern for the stakeholders in this catchment to co-operate in developing a process that assists with compliance control of their water use and waste disposal to reduce costs, decrease industrial risks as water quality compliance increases, and improve source water quality. The sugar industry is downstream within the Crocodile River Catchment, and is affected by the activities of all upstream water users; the industry is thus dependent on the stakeholders upstream participating in the effective management of the resource. However, the sugar industry is also located just before the confluence of the Crocodile River and Komati River upstream of the Mozambique border, and thus the water quality of the sugar industry effluent will affect the quality of the water that flows into Mozambique. The sugar industry is on the opposite river bank to the Kruger National Park, which has high water resource protection goals. Therefore, the sugar industry has a national role to play in the management of water resources in the Crocodile River Catchment. This study provides a focused view of the role of the sugar industry in the development of a co-operative, integrated water quality management process (IWQMP) in the Crocodile River Catchment. In order to address the objectives of this study, this research drew from an understanding of the social processes that influence water management practices within the sugar industry as well as social processes that influence the role of the Inkomati-Usuthu Catchment Management Agency as the main governing institution in water resource management in the Inkomati Water Management Area. The study also drew from an understanding of scientific knowledge in terms of a water chemistry which describes the upstream and downstream water quality impacts related to the sugar industry. The water quality analysis for the Lower Crocodile River Catchment shows a decline in water quality in terms of Total Dissolved Solids (TDS) loads when moving from below Mbombela to the Mozambique border. The major sources of TDS in the Lower Crocodile River are point source dominated, which may be attributed to the extensive mining, industrial and municipal activities that occur across the catchment. When observing Total Alkalinity (TAL) and pH values from below Mbombela to the furthest monitoring point, there is deterioration in the quality of the water in the Lower Crocodile River, with the Kaap River contributing a negative effect that is diluted by the Crocodile main stem. The Hectorspruit Waste Water Treatment Works (WWTWs) (located in the Lower Crocodile River Catchment) contributes high concentrations of TDS and TAL into the Crocodile River. Total Inorganic Nitrogen and Soluble Reactive Phosphorus concentrations decrease in the lower reaches of the Crocodile River compared with the river below Mbombela, which can be attributed to the extensive sugar cane plantations located in the Lower Crocodile River Catchment acting as an “agricultural wetland” that serves a function of bioremediation resulting in large scale absorption of nutrients. This is an interesting result as earlier assumptions were that fertiliser application would result in an overall increase in nutrient loads and concentrations. Biomonitoring data show no substantial change in aquatic health in the LowerCrocodile River Catchment. For a catchment that has an extensive agricultural land use in terms of sugarcane and citrus production, the Crocodile River is unexpectedly not in a toxic state in terms of aquatic health. This is a positive result and it suggests that pesticide use is strictly controlled in the sugar and citrus industry in the Crocodile River Catchment. For long term sustainability, it is essential for the sugar industry to maintain (and possibly improve) this pesticide management. The social component of this study aimed to provide an analysis of the management practices of the sugar mill as well as examining agricultural practices in the sugar cane fields in relation to water quality management through the use of Cultural Historical Activity System Theory (CHAT). This component showed that there are contradictions within the sugar industry activity system that are considered to be areas of “tension” that can be loosened or focused on to improve the contribution the sugar industry can make to the IWQMP. Surfacing contradictions within the sugar industry activity system and the Inkomati-Usuthu Catchment Management Agency activity systems highlighted areas of potential for learning and change. While an understanding of biophysical processes through scientific knowledge is critical in water management decision making, it is evident that an understanding of other actors, institutions and networks that inform water quality management decision-making also plays a significant role. The notion of improving the role of scientific or biophysical knowledge in contributing to socio-ecologically robust knowledge co-creation, decisions and actions towards resolving water quality problems is emphasised. Specifically, moving towards improving interactions between scientists and other actors (water users in the Crocodile Catchment in this case), so that scientific practices become more orientated towards societal platforms where water quality management is tackled to enable improved water quality management practices. Therefore, linking the social and biophysical components in this study provides a holistic understanding of how the sugar industry can contribute to the development of an IWQMP for the Crocodile River catchment.
- Full Text:
- Date Issued: 2015
- Authors: Sahula, Asiphe
- Date: 2015
- Subjects: Water quality management -- South Africa -- Krokodilrivier (Mpumalanga) , Watersheds -- South Africa -- Krokodilrivier (Mpumalanga) , Integrated water development -- South Africa -- Krokodilrivier (Mpumalanga) , Water quality management -- Social aspects -- South Africa -- Krokodilrivier (Mpumalanga) , Social responsibility of business -- South Africa -- Krokodilrivier (Mpumalanga) , Water quality -- South Africa -- Krokodilrivier (Mpumalanga)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:6051 , http://hdl.handle.net/10962/d1017876
- Description: Water quality deterioration is reaching crisis proportions in South Africa. Many South African catchments are over-allocated, and decreasing volumes of source water mean increasing concentrations of pollutants. The Crocodile River Catchment in the Mpumalanga province in South Africa was identified through previous research, as a catchment faced with deteriorating source water quality for water users in the catchment. Poor source water quality has become a sufficiently acute concern for the stakeholders in this catchment to co-operate in developing a process that assists with compliance control of their water use and waste disposal to reduce costs, decrease industrial risks as water quality compliance increases, and improve source water quality. The sugar industry is downstream within the Crocodile River Catchment, and is affected by the activities of all upstream water users; the industry is thus dependent on the stakeholders upstream participating in the effective management of the resource. However, the sugar industry is also located just before the confluence of the Crocodile River and Komati River upstream of the Mozambique border, and thus the water quality of the sugar industry effluent will affect the quality of the water that flows into Mozambique. The sugar industry is on the opposite river bank to the Kruger National Park, which has high water resource protection goals. Therefore, the sugar industry has a national role to play in the management of water resources in the Crocodile River Catchment. This study provides a focused view of the role of the sugar industry in the development of a co-operative, integrated water quality management process (IWQMP) in the Crocodile River Catchment. In order to address the objectives of this study, this research drew from an understanding of the social processes that influence water management practices within the sugar industry as well as social processes that influence the role of the Inkomati-Usuthu Catchment Management Agency as the main governing institution in water resource management in the Inkomati Water Management Area. The study also drew from an understanding of scientific knowledge in terms of a water chemistry which describes the upstream and downstream water quality impacts related to the sugar industry. The water quality analysis for the Lower Crocodile River Catchment shows a decline in water quality in terms of Total Dissolved Solids (TDS) loads when moving from below Mbombela to the Mozambique border. The major sources of TDS in the Lower Crocodile River are point source dominated, which may be attributed to the extensive mining, industrial and municipal activities that occur across the catchment. When observing Total Alkalinity (TAL) and pH values from below Mbombela to the furthest monitoring point, there is deterioration in the quality of the water in the Lower Crocodile River, with the Kaap River contributing a negative effect that is diluted by the Crocodile main stem. The Hectorspruit Waste Water Treatment Works (WWTWs) (located in the Lower Crocodile River Catchment) contributes high concentrations of TDS and TAL into the Crocodile River. Total Inorganic Nitrogen and Soluble Reactive Phosphorus concentrations decrease in the lower reaches of the Crocodile River compared with the river below Mbombela, which can be attributed to the extensive sugar cane plantations located in the Lower Crocodile River Catchment acting as an “agricultural wetland” that serves a function of bioremediation resulting in large scale absorption of nutrients. This is an interesting result as earlier assumptions were that fertiliser application would result in an overall increase in nutrient loads and concentrations. Biomonitoring data show no substantial change in aquatic health in the LowerCrocodile River Catchment. For a catchment that has an extensive agricultural land use in terms of sugarcane and citrus production, the Crocodile River is unexpectedly not in a toxic state in terms of aquatic health. This is a positive result and it suggests that pesticide use is strictly controlled in the sugar and citrus industry in the Crocodile River Catchment. For long term sustainability, it is essential for the sugar industry to maintain (and possibly improve) this pesticide management. The social component of this study aimed to provide an analysis of the management practices of the sugar mill as well as examining agricultural practices in the sugar cane fields in relation to water quality management through the use of Cultural Historical Activity System Theory (CHAT). This component showed that there are contradictions within the sugar industry activity system that are considered to be areas of “tension” that can be loosened or focused on to improve the contribution the sugar industry can make to the IWQMP. Surfacing contradictions within the sugar industry activity system and the Inkomati-Usuthu Catchment Management Agency activity systems highlighted areas of potential for learning and change. While an understanding of biophysical processes through scientific knowledge is critical in water management decision making, it is evident that an understanding of other actors, institutions and networks that inform water quality management decision-making also plays a significant role. The notion of improving the role of scientific or biophysical knowledge in contributing to socio-ecologically robust knowledge co-creation, decisions and actions towards resolving water quality problems is emphasised. Specifically, moving towards improving interactions between scientists and other actors (water users in the Crocodile Catchment in this case), so that scientific practices become more orientated towards societal platforms where water quality management is tackled to enable improved water quality management practices. Therefore, linking the social and biophysical components in this study provides a holistic understanding of how the sugar industry can contribute to the development of an IWQMP for the Crocodile River catchment.
- Full Text:
- Date Issued: 2015
Tetrol and derivatives: synthesis, host-guest properties and racemate resolutions
- Authors: Pohl, Pieter Lourens
- Date: 2015
- Subjects: Chemistry, Organic , Chirality , Asymmetric synthesis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/2879 , vital:20359
- Description: In this study, we investigated the potential of a novel chiral host compound (+)-(2R,3R)-1,1,4,4-tetraphenylbutane-1,2,3,4-tetraol (TETROL) and its derivatives for use in racemate resolution using host-guest chemistry. The parent TETROL molecule is composed of a butane chain bearing a hydroxy functionality on each carbon, and two phenyl rings on each of the terminal carbons. The two internal carbon atoms are chiral. The syntheses of TETROL and derivatives were carried out by modifying the diester of naturally-occurring optically active tartaric acid using a variety of aromatic Grignard reagents. These included phenyl, anisyl, tolyl and naphthyl groups, as well as aromatic rings bearing fluoro and trifluoromethyl substitutents. The substituents on the aromatic rings were located in the ortho, meta or para positions. The so-obtained potential host compounds were investigated for their inclusion abilities by recrystallizing them from a number of potential chiral guest compounds such as 2- and 3-methylcyclohexanone, camphor, i-propanol and 2-butanol, as well as various achiral organic compounds. Host:guest ratios were determined by means of 1H-NMR spectroscopy. Of the hosts investigated, TETROL appeared to favour a host:guest ratio of 1:1 for all included compounds. It complexed with cyclic ketones such as cyclohexanone and derivatives, and also cyclic alcohols and amines like cyclohexanol and morpholine. TETROL, however, was not able to include short chain or branched chain alcohols such as i-propanol and 2-butanol. p-AnisylTETROL showed similar inclusion abilities to TETROL but, in addition, enclathrated i-propanol and 2-butanol. p-TolylTETROL showed a preference for the inclusion of alcohols over ketones. In general, the ortho-substituted aromatic derivatives of TETROL faired relatively poorly as hosts, with some exceptions. Of the hosts investigated, TETROL appeared to favour a host:guest ratio of 1:1 for all included compounds. It complexed with cyclic ketones such as cyclohexanone and derivatives, and also cyclic alcohols and amines like cyclohexanol and morpholine. TETROL, however, was not able to include short chain or branched chain alcohols such as i-propanol and 2-butanol. p-AnisylTETROL showed similar inclusion abilities to TETROL but, in addition, enclathrated i-propanol and 2-butanol. p-TolylTETROL showed a preference for the inclusion of alcohols over ketones. In general, the ortho-substituted aromatic derivatives of TETROL faired relatively poorly as hosts, with some exceptions. X-Ray data of the inclusion complexes indicated that a pair of 1,3-intramolecular hydrogen bonds was a significant stabilizing factor of the geometries of all the hosts. The guest was always held in the host crystal by means of a hydrogen bond with the host, where the host functioned as the hydrogen bond donor and the guest as the acceptor. There were a number of other inter- and intra-molecular contacts that further stabilized the inclusion complexes. A surprising feature of the inclusion of 3-methylcyclohexanone, as elucidated by X-ray analysis, was that its methyl group adopted the axial orientation, the higher energy conformation for these kinds of molecules, and a 3-alkylketone effect was proposed to be one of the reasons for this observation. Thermal data was used to assess the relative thermal stabilities of the complexes, and the results compared with features of the X-ray structures, in order to determine whether thermal stability is related in some way to the nature of the guest packing in the host crystal. the case of the racemic guests, complexes obtained were analysed using chiral GC-MS. TETROL preferred the R-enantiomers of 2- and 3-methylcyclohexanone (21.7% and 16.7% e.e.). The S-enantiomer of camphor was favoured but the e.e. was low (3.8%). p-AnisylTETROL had a preference for the S-enantiomer in the case of 2- and 3-methylcyclohexanone as well as 2-butanol (44.3%, 20.4% and 1.7% e.e., respectively). p-TolylTETROL could only successfully resolve 2-butanol (23.5% e.e. in favour of the R-enantiomer). o-TolylTETROL preferred the R-enantiomers of methyl phenyl sulfoxide (29.2% e.e.) and 2-butanol (21.5% e.e.). Overall, TETROL and its derivatives exhibited the ability to resolve racemic mixtures to some extent.
- Full Text:
- Date Issued: 2015
- Authors: Pohl, Pieter Lourens
- Date: 2015
- Subjects: Chemistry, Organic , Chirality , Asymmetric synthesis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/2879 , vital:20359
- Description: In this study, we investigated the potential of a novel chiral host compound (+)-(2R,3R)-1,1,4,4-tetraphenylbutane-1,2,3,4-tetraol (TETROL) and its derivatives for use in racemate resolution using host-guest chemistry. The parent TETROL molecule is composed of a butane chain bearing a hydroxy functionality on each carbon, and two phenyl rings on each of the terminal carbons. The two internal carbon atoms are chiral. The syntheses of TETROL and derivatives were carried out by modifying the diester of naturally-occurring optically active tartaric acid using a variety of aromatic Grignard reagents. These included phenyl, anisyl, tolyl and naphthyl groups, as well as aromatic rings bearing fluoro and trifluoromethyl substitutents. The substituents on the aromatic rings were located in the ortho, meta or para positions. The so-obtained potential host compounds were investigated for their inclusion abilities by recrystallizing them from a number of potential chiral guest compounds such as 2- and 3-methylcyclohexanone, camphor, i-propanol and 2-butanol, as well as various achiral organic compounds. Host:guest ratios were determined by means of 1H-NMR spectroscopy. Of the hosts investigated, TETROL appeared to favour a host:guest ratio of 1:1 for all included compounds. It complexed with cyclic ketones such as cyclohexanone and derivatives, and also cyclic alcohols and amines like cyclohexanol and morpholine. TETROL, however, was not able to include short chain or branched chain alcohols such as i-propanol and 2-butanol. p-AnisylTETROL showed similar inclusion abilities to TETROL but, in addition, enclathrated i-propanol and 2-butanol. p-TolylTETROL showed a preference for the inclusion of alcohols over ketones. In general, the ortho-substituted aromatic derivatives of TETROL faired relatively poorly as hosts, with some exceptions. Of the hosts investigated, TETROL appeared to favour a host:guest ratio of 1:1 for all included compounds. It complexed with cyclic ketones such as cyclohexanone and derivatives, and also cyclic alcohols and amines like cyclohexanol and morpholine. TETROL, however, was not able to include short chain or branched chain alcohols such as i-propanol and 2-butanol. p-AnisylTETROL showed similar inclusion abilities to TETROL but, in addition, enclathrated i-propanol and 2-butanol. p-TolylTETROL showed a preference for the inclusion of alcohols over ketones. In general, the ortho-substituted aromatic derivatives of TETROL faired relatively poorly as hosts, with some exceptions. X-Ray data of the inclusion complexes indicated that a pair of 1,3-intramolecular hydrogen bonds was a significant stabilizing factor of the geometries of all the hosts. The guest was always held in the host crystal by means of a hydrogen bond with the host, where the host functioned as the hydrogen bond donor and the guest as the acceptor. There were a number of other inter- and intra-molecular contacts that further stabilized the inclusion complexes. A surprising feature of the inclusion of 3-methylcyclohexanone, as elucidated by X-ray analysis, was that its methyl group adopted the axial orientation, the higher energy conformation for these kinds of molecules, and a 3-alkylketone effect was proposed to be one of the reasons for this observation. Thermal data was used to assess the relative thermal stabilities of the complexes, and the results compared with features of the X-ray structures, in order to determine whether thermal stability is related in some way to the nature of the guest packing in the host crystal. the case of the racemic guests, complexes obtained were analysed using chiral GC-MS. TETROL preferred the R-enantiomers of 2- and 3-methylcyclohexanone (21.7% and 16.7% e.e.). The S-enantiomer of camphor was favoured but the e.e. was low (3.8%). p-AnisylTETROL had a preference for the S-enantiomer in the case of 2- and 3-methylcyclohexanone as well as 2-butanol (44.3%, 20.4% and 1.7% e.e., respectively). p-TolylTETROL could only successfully resolve 2-butanol (23.5% e.e. in favour of the R-enantiomer). o-TolylTETROL preferred the R-enantiomers of methyl phenyl sulfoxide (29.2% e.e.) and 2-butanol (21.5% e.e.). Overall, TETROL and its derivatives exhibited the ability to resolve racemic mixtures to some extent.
- Full Text:
- Date Issued: 2015
Investigation into School Managers’ role as facilitators of Teachers to improve Teacher effectiveness and efficiency
- Authors: Peter, Tembelihle
- Date: 2015
- Subjects: School principals -- Facilitation -- South Africa Teachers – Effectiveness and efficiency School manager -- Educators—Professional development-- South Africa – Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: http://hdl.handle.net/11260/1314 , vital:30803
- Description: This research study examined the role of management by school managers in the three strata schools of the Mthatha Education District in the Province of the Eastern Cape of South Africa. The researcher tried to show how School managers provide a leadership role especially in the Mthatha schools in the Eastern Cape Province of South Africa. It was deduced from the statistical data presented that there is a significant correlation between a school manager’s tasks and the quality of education. This shows that when school managers plan properly, organizing properly, leading and control management task be better all resources of the school will be managed better. The proper execution of management tasks of planning, organizing, leading and control by school managers have contributed extensively to the success of schools. The researcher used both qualitative and quantitative methods in –order to collect data. Two instruments namely, questionnaires and interviews were used in –order to collect data. Tools used during quantitative research design data collection are questionnaires. Questionnaires were used in order to pilot the study for the purposes of identifying with rich information. The researcher used structured questions for quantitative questionnaires. Respondents answered questionnaires in the absence of the researcher in-order to allow anonymity and a stress –free environment. Tools used for the qualitative research design data collection method were interviews. Interviews were used for the information rich subjects. During interviews, the researcher used face-to-face, one- to- one interviews with each subject. The sample subjects in this study for the quantitative method were school managers of Mthatha schools. The total number of participants was 14. All of them returned their questionnaire responses at the agreed time with the researcher. Amongst the findings that emerged were; a high level of enthusiasm in all three schools for change; however, different kinds of hindrances were experienced. ii Finally, recommendations and suggestions were made starting that schools have to follow strict management /leadership programs.
- Full Text:
- Date Issued: 2015
- Authors: Peter, Tembelihle
- Date: 2015
- Subjects: School principals -- Facilitation -- South Africa Teachers – Effectiveness and efficiency School manager -- Educators—Professional development-- South Africa – Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: http://hdl.handle.net/11260/1314 , vital:30803
- Description: This research study examined the role of management by school managers in the three strata schools of the Mthatha Education District in the Province of the Eastern Cape of South Africa. The researcher tried to show how School managers provide a leadership role especially in the Mthatha schools in the Eastern Cape Province of South Africa. It was deduced from the statistical data presented that there is a significant correlation between a school manager’s tasks and the quality of education. This shows that when school managers plan properly, organizing properly, leading and control management task be better all resources of the school will be managed better. The proper execution of management tasks of planning, organizing, leading and control by school managers have contributed extensively to the success of schools. The researcher used both qualitative and quantitative methods in –order to collect data. Two instruments namely, questionnaires and interviews were used in –order to collect data. Tools used during quantitative research design data collection are questionnaires. Questionnaires were used in order to pilot the study for the purposes of identifying with rich information. The researcher used structured questions for quantitative questionnaires. Respondents answered questionnaires in the absence of the researcher in-order to allow anonymity and a stress –free environment. Tools used for the qualitative research design data collection method were interviews. Interviews were used for the information rich subjects. During interviews, the researcher used face-to-face, one- to- one interviews with each subject. The sample subjects in this study for the quantitative method were school managers of Mthatha schools. The total number of participants was 14. All of them returned their questionnaire responses at the agreed time with the researcher. Amongst the findings that emerged were; a high level of enthusiasm in all three schools for change; however, different kinds of hindrances were experienced. ii Finally, recommendations and suggestions were made starting that schools have to follow strict management /leadership programs.
- Full Text:
- Date Issued: 2015
A Case study of students' first additional language reading and response in the faculty of education at the University of Fort Hare: Eastern Cape
- Authors: Linake, Manthekeleng A
- Date: 2015
- Subjects: Language and education Language and languages -- Study and teaching -- South Africa --Eastern Cape English language -- Study and teaching -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5851 , vital:29402
- Description: Although reading ability alone cannot guarantee academic success, it is highly likely that a lack of reading can function as a key barrier to academic achievement. There are many other factors that are part of the causality. Of these, socio-economic status, teaching methods, parental involvement and lack of exposure to LoLT are probably the most important. Classroom teaching for reading instruction needs to be considered as the critical factor in preventing reading problems and must be the central focus for change. As such, teachers’ acquisition of the teaching skills necessary to bring about the development of literate language competency are critical especially in South Africa where many assumptions have been largely unquestioned about how to teach reading and writing, which languages to use and what counts as high quality practice in classrooms (Banda, 2000). The main aim of the study was to investigate principally reading with the use of English first additional language (FAL) in South African Universities. The objectives included enabling students to successfully learn reading in order to promote their’ reading to such a level that they can continue reading to learn and not learning to read. The researcher was particularly interested in exploring broader trends in reading strategies, instructions and training for students with the intention of contributing possible strategies to address the training of students for their role as literacy instructors in English as well as in multilingual education in South Africa. Methodologically, the study is premised within the interpretivist paradigm based on a qualitative research method. It is a case study design. It is a longitudinal study that covered a total of four years, the duration for a B Ed degree. The population comprises all forth year English teaching methods class and ten lecturers in the programme. The data collection tools included documents, participant observation, journal entry, assessments and focus groups. Interviews were granted to a purposively selected number of students (9) based on their academic performance over the years. There were three weak, three medium and three strong students that were interviewed. A total of 10 teachers were randomly selected from the Faculty to get their input about students’ reading. The ages of the respondents ranged from 18-60. The study concluded that students prefer to be taught in English although most see it as a barrier to learning. The findings showed that language learning can be easier if it is considered as social practice with academic purpose. The researcher recommends that there is need for a reduction of administrative duties from the lecturers to create more time for consultation. She or he also see a need for tutorials which can help to expose learners even more to interaction in EFAL.
- Full Text:
- Date Issued: 2015
- Authors: Linake, Manthekeleng A
- Date: 2015
- Subjects: Language and education Language and languages -- Study and teaching -- South Africa --Eastern Cape English language -- Study and teaching -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5851 , vital:29402
- Description: Although reading ability alone cannot guarantee academic success, it is highly likely that a lack of reading can function as a key barrier to academic achievement. There are many other factors that are part of the causality. Of these, socio-economic status, teaching methods, parental involvement and lack of exposure to LoLT are probably the most important. Classroom teaching for reading instruction needs to be considered as the critical factor in preventing reading problems and must be the central focus for change. As such, teachers’ acquisition of the teaching skills necessary to bring about the development of literate language competency are critical especially in South Africa where many assumptions have been largely unquestioned about how to teach reading and writing, which languages to use and what counts as high quality practice in classrooms (Banda, 2000). The main aim of the study was to investigate principally reading with the use of English first additional language (FAL) in South African Universities. The objectives included enabling students to successfully learn reading in order to promote their’ reading to such a level that they can continue reading to learn and not learning to read. The researcher was particularly interested in exploring broader trends in reading strategies, instructions and training for students with the intention of contributing possible strategies to address the training of students for their role as literacy instructors in English as well as in multilingual education in South Africa. Methodologically, the study is premised within the interpretivist paradigm based on a qualitative research method. It is a case study design. It is a longitudinal study that covered a total of four years, the duration for a B Ed degree. The population comprises all forth year English teaching methods class and ten lecturers in the programme. The data collection tools included documents, participant observation, journal entry, assessments and focus groups. Interviews were granted to a purposively selected number of students (9) based on their academic performance over the years. There were three weak, three medium and three strong students that were interviewed. A total of 10 teachers were randomly selected from the Faculty to get their input about students’ reading. The ages of the respondents ranged from 18-60. The study concluded that students prefer to be taught in English although most see it as a barrier to learning. The findings showed that language learning can be easier if it is considered as social practice with academic purpose. The researcher recommends that there is need for a reduction of administrative duties from the lecturers to create more time for consultation. She or he also see a need for tutorials which can help to expose learners even more to interaction in EFAL.
- Full Text:
- Date Issued: 2015
Phytochemical analysis and antibacterial properties of aqueous and ethanol extracts of Brachylaena elliptica (Thurb.) dc. and Brachylaena ilicifolia (Lam.) Phill & Schweick
- Authors: Sagbo, Idowu Jonas
- Date: 2015
- Subjects: Medicinal plants , Traditional medicine , Herbs -- Therapeutic use
- Language: English
- Type: Thesis , Masters , MSc (Biochemistry)
- Identifier: vital:11297 , http://hdl.handle.net/10353/d1021289 , Medicinal plants , Traditional medicine , Herbs -- Therapeutic use
- Description: Resistance of human pathogenic bacterial strains results in selective pressure against known antibiotic. However, plant derived compounds that possess antibacterial potential are currently being investigated for treatment of wound infections in diabetic patients as they are inexpensive and non-toxic. Hence, this dissertation was designed to evaluate two medicinal plants (Brachylaena elliptica and Brachylaena ilicifolia) traditionally used in the treatment of various diseases such as diabetes, and its secondary complications in diabetic patients. The in vitro antioxidant activity of both plants were evaluated using DPPH (1, 1-diphenylhydrazl), ferric reducing power, ABTS (2, 2’-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid), NO (nitric oxide) and H2O2 (hydrogen peroxide) techniques. The antibacterial test and Minimum inhibitory concentration (MIC) was determined by agar dilution method against 5 bacteria strains (Pseudomonas aeruginosa, Staphylococcus aureus, Streptococcus pyogene, Proteus vulgaris and Proteus mirabilis) infecting wounds in diabetic patients using amoxicillin and ciprofloxacin as positive control. The phytochemical analyses were assessed using standard published methods. Identification of bioactive components in essential oils of both plants were assessed using GCMS. The aqueous and ethanol extracts of both plants were also evaluated to identify bioactive components using LC-MS. The results of the phytochemical analysis revealed the presence of phenols, tannins, flavanoids, flavanols, proanthocyanidins, saponins and alkaloids in both plants. Both plants indicated strong antioxidant activities which might be due to the presence of bioactive compounds. The aqueous and ethanol leaf extracts of both plants demonstrated appreciable broad spectrum activities against these wound pathogens with MIC ranging between 5 and 0.3 mg/ml. The GC-MS analysis of the essential oils of both plants revealed the presence of monoterpenes, oxygenated sesquiterpenes, phenolics and esters. The LC-MS analysis of the aqueous and ethanol leaf extracts of both plants showed that both plants are rich in alkaloids, terpenes, terpenoids, monoterpernoids, and flavanoids. Conclusively, this study has partially justified the ethnomedicinal use of B. elliptica and B.licifolia leaves for the treatment of various diseases, including diabetes and wound infections caused by bacteria in diabetic patients. These may be attributed to the presence of antioxidant compound such as phenols, flavanoids, saponins, tannins, alkaloids and other phytochemical compounds.
- Full Text:
- Date Issued: 2015
- Authors: Sagbo, Idowu Jonas
- Date: 2015
- Subjects: Medicinal plants , Traditional medicine , Herbs -- Therapeutic use
- Language: English
- Type: Thesis , Masters , MSc (Biochemistry)
- Identifier: vital:11297 , http://hdl.handle.net/10353/d1021289 , Medicinal plants , Traditional medicine , Herbs -- Therapeutic use
- Description: Resistance of human pathogenic bacterial strains results in selective pressure against known antibiotic. However, plant derived compounds that possess antibacterial potential are currently being investigated for treatment of wound infections in diabetic patients as they are inexpensive and non-toxic. Hence, this dissertation was designed to evaluate two medicinal plants (Brachylaena elliptica and Brachylaena ilicifolia) traditionally used in the treatment of various diseases such as diabetes, and its secondary complications in diabetic patients. The in vitro antioxidant activity of both plants were evaluated using DPPH (1, 1-diphenylhydrazl), ferric reducing power, ABTS (2, 2’-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid), NO (nitric oxide) and H2O2 (hydrogen peroxide) techniques. The antibacterial test and Minimum inhibitory concentration (MIC) was determined by agar dilution method against 5 bacteria strains (Pseudomonas aeruginosa, Staphylococcus aureus, Streptococcus pyogene, Proteus vulgaris and Proteus mirabilis) infecting wounds in diabetic patients using amoxicillin and ciprofloxacin as positive control. The phytochemical analyses were assessed using standard published methods. Identification of bioactive components in essential oils of both plants were assessed using GCMS. The aqueous and ethanol extracts of both plants were also evaluated to identify bioactive components using LC-MS. The results of the phytochemical analysis revealed the presence of phenols, tannins, flavanoids, flavanols, proanthocyanidins, saponins and alkaloids in both plants. Both plants indicated strong antioxidant activities which might be due to the presence of bioactive compounds. The aqueous and ethanol leaf extracts of both plants demonstrated appreciable broad spectrum activities against these wound pathogens with MIC ranging between 5 and 0.3 mg/ml. The GC-MS analysis of the essential oils of both plants revealed the presence of monoterpenes, oxygenated sesquiterpenes, phenolics and esters. The LC-MS analysis of the aqueous and ethanol leaf extracts of both plants showed that both plants are rich in alkaloids, terpenes, terpenoids, monoterpernoids, and flavanoids. Conclusively, this study has partially justified the ethnomedicinal use of B. elliptica and B.licifolia leaves for the treatment of various diseases, including diabetes and wound infections caused by bacteria in diabetic patients. These may be attributed to the presence of antioxidant compound such as phenols, flavanoids, saponins, tannins, alkaloids and other phytochemical compounds.
- Full Text:
- Date Issued: 2015
An exploration of business level strategy at the bottom of the pyramid: a case study of Twizza, Eastern Cape
- Authors: Sityoshwana, Ludwe Lusu
- Date: 2015
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/54486 , vital:26569
- Description: This qualitative study focuses on business level strategy adopted by Twizza to compete in the bottom of the pyramid market in the Eastern Cape, South Africa. Twizza enjoyed huge success between the years 2010 - 2014 as a medium to large sized manufacturer of carbonated soft drinks in the Eastern Cape. In light of this, the current study seeks to answer the following: What business level strategy did top management at Twizza adopt to compete and grow in the BoP market in the Eastern Cape, South Africa? The study takes the form of a case study to explore and understand the patterns of decisions adopted by Twizza’s top management in competing at the bottom of the pyramid. As such, the main objective of the study was to identify the business level strategy adopted by Twizza which enabled their superior performance within the BoP market. The study adopts Porter`s typology to explore business level strategy. Stratified, purposive sampling was used to identify 4 top managers as participants in this study. A total of 7, semi-structured, interviews were used to collect critical incidents from top management of Twizza. This was the primary data used in this study. This type of data was combined with relevant information which was gathered via published press articles and on-line commentary. The study found that central to Twizza’s business strategy were four pillars, namely, strict control and management of manufacturing costs, product quality equal to that of market leaders, the ability of the organisation to manufacture its own raw materials and ability to ensure product availability to the market to the market. These findings reveal that Twizza employed a hybrid strategy, anchored by cost leadership. Thus, Twizza incorporated elements of differentiation and best value strategies to offer its customers affordable quality.
- Full Text:
- Date Issued: 2015
- Authors: Sityoshwana, Ludwe Lusu
- Date: 2015
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/54486 , vital:26569
- Description: This qualitative study focuses on business level strategy adopted by Twizza to compete in the bottom of the pyramid market in the Eastern Cape, South Africa. Twizza enjoyed huge success between the years 2010 - 2014 as a medium to large sized manufacturer of carbonated soft drinks in the Eastern Cape. In light of this, the current study seeks to answer the following: What business level strategy did top management at Twizza adopt to compete and grow in the BoP market in the Eastern Cape, South Africa? The study takes the form of a case study to explore and understand the patterns of decisions adopted by Twizza’s top management in competing at the bottom of the pyramid. As such, the main objective of the study was to identify the business level strategy adopted by Twizza which enabled their superior performance within the BoP market. The study adopts Porter`s typology to explore business level strategy. Stratified, purposive sampling was used to identify 4 top managers as participants in this study. A total of 7, semi-structured, interviews were used to collect critical incidents from top management of Twizza. This was the primary data used in this study. This type of data was combined with relevant information which was gathered via published press articles and on-line commentary. The study found that central to Twizza’s business strategy were four pillars, namely, strict control and management of manufacturing costs, product quality equal to that of market leaders, the ability of the organisation to manufacture its own raw materials and ability to ensure product availability to the market to the market. These findings reveal that Twizza employed a hybrid strategy, anchored by cost leadership. Thus, Twizza incorporated elements of differentiation and best value strategies to offer its customers affordable quality.
- Full Text:
- Date Issued: 2015
Determining the competency of children with developmental delays to testify in criminal trials
- Authors: Van Niekerk, Hester Aletta
- Date: 2015
- Subjects: Child witnesses -- South Africa , Developmentally disabled children -- South Africa , Children -- Legal status, laws, etc. -- South Africa , Evidence (Law) -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3722 , http://hdl.handle.net/10962/d1017878
- Description: In South Africa children are required to testify under oath or admonition. The shortcomings of the competency test are of particular relevance to children with developmental disabilities, since courts are not equipped to adequately assess the competency of these children to give evidence. One component of testimonial competency, namely the understanding of the concepts truth and lies, is overemphasised and is examined with questions that are developmentally inappropriate for child witnesses in general. For children with cognitive disabilities, such questions create barriers for participation in the truth-seeking process. Consequently, convictions have been set aside on appeal owing to procedural irregularities found in the implementation of this test. In the literature review on testimonial competency, attention was given to restrictions that specific developmental disabilities impose on the perceptual, cognitive, communication and moral development of children. Two of four components – narrative ability and moral capacity – were studied in a sample of 184 children in middle childhood. Participants’ ability to give coherent and detailed accounts of events, their understanding of the concepts truth, lies, promises and the oath, and the Lyon and Saywitz oath-taking competency test, were investigated. Quantitative and qualitative methods were used for data analysis. Three groups were identified: those children with very limited, average or full testimonial competency. Their capacities were found to be related to maturation of cognitive functions and level of intellectual functioning. Participants were better able to demonstrate their understanding of truth and falsity by responding to the oathtaking test than giving verbal descriptions of these concepts. Whereas 1 percent of participants had a conceptual understanding of an oath, 15 percent understood the concept of a promise. Syncretism and confabulation compromised the narrative accounts of a substantial number of participants. Syncretism relates to immature narrative ability: correct details are combined in an illogical fashion. Confabulation refers to filling memory gaps with fabricated information. Guidelines on the competency determination of children with developmental disabilities were compiled. It is suggested that the competency examination be replaced by a formal, pre-trial competency assessment. The court should also receive expert evidence on how to facilitate meaningful participation when a child with sufficient testimonial competence is the witness.
- Full Text:
- Date Issued: 2015
- Authors: Van Niekerk, Hester Aletta
- Date: 2015
- Subjects: Child witnesses -- South Africa , Developmentally disabled children -- South Africa , Children -- Legal status, laws, etc. -- South Africa , Evidence (Law) -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3722 , http://hdl.handle.net/10962/d1017878
- Description: In South Africa children are required to testify under oath or admonition. The shortcomings of the competency test are of particular relevance to children with developmental disabilities, since courts are not equipped to adequately assess the competency of these children to give evidence. One component of testimonial competency, namely the understanding of the concepts truth and lies, is overemphasised and is examined with questions that are developmentally inappropriate for child witnesses in general. For children with cognitive disabilities, such questions create barriers for participation in the truth-seeking process. Consequently, convictions have been set aside on appeal owing to procedural irregularities found in the implementation of this test. In the literature review on testimonial competency, attention was given to restrictions that specific developmental disabilities impose on the perceptual, cognitive, communication and moral development of children. Two of four components – narrative ability and moral capacity – were studied in a sample of 184 children in middle childhood. Participants’ ability to give coherent and detailed accounts of events, their understanding of the concepts truth, lies, promises and the oath, and the Lyon and Saywitz oath-taking competency test, were investigated. Quantitative and qualitative methods were used for data analysis. Three groups were identified: those children with very limited, average or full testimonial competency. Their capacities were found to be related to maturation of cognitive functions and level of intellectual functioning. Participants were better able to demonstrate their understanding of truth and falsity by responding to the oathtaking test than giving verbal descriptions of these concepts. Whereas 1 percent of participants had a conceptual understanding of an oath, 15 percent understood the concept of a promise. Syncretism and confabulation compromised the narrative accounts of a substantial number of participants. Syncretism relates to immature narrative ability: correct details are combined in an illogical fashion. Confabulation refers to filling memory gaps with fabricated information. Guidelines on the competency determination of children with developmental disabilities were compiled. It is suggested that the competency examination be replaced by a formal, pre-trial competency assessment. The court should also receive expert evidence on how to facilitate meaningful participation when a child with sufficient testimonial competence is the witness.
- Full Text:
- Date Issued: 2015
An evaluation of security issues in cloud-based file sharing technologies
- Authors: Fana, Akhona
- Date: 2015
- Subjects: Cloud computing -- Security measures Computer networks -- Security measures Computer security
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/1841 , vital:27565
- Description: Cloud computing is one of the most promising technologies for backup and data storage that provides flexible access to data. Cloud computing plays a vital role in remote backup. It is so unfortunate that this computing technique has flaws that thrilled and edgy end users in implementing it effectively. These flaws include factors like lack of integrity, confidentiality and privacy to information. A secure cloud is impossible unless the computer-generated environment is appropriately secured. In any form of technology it is always advisable that security challenges must be prior identified and fixed before the implementation of that particular technology. Primarily, this study will focus on finding security issues in cloud computing with the objective of finding concerns like credential theft and session management in the ―Cloud‖. Main arguments like HTTP banner disclosure, Bash ―ShellShock‖ Injection and password issues were discovered during the stages of study implementation. These challenges may provide information that will permit hackers in manipulating and exploiting cloud environment. Identifying credential theft and session management in cloud-based file sharing technologies a mixed method approach was implemented throughout the course of the study due to the nature of study and unity of analysis. Penetration tests were performed as security testing technique. Prevention and guideline of security threats leads to a friendly and authentic world of technology.
- Full Text:
- Date Issued: 2015
- Authors: Fana, Akhona
- Date: 2015
- Subjects: Cloud computing -- Security measures Computer networks -- Security measures Computer security
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/1841 , vital:27565
- Description: Cloud computing is one of the most promising technologies for backup and data storage that provides flexible access to data. Cloud computing plays a vital role in remote backup. It is so unfortunate that this computing technique has flaws that thrilled and edgy end users in implementing it effectively. These flaws include factors like lack of integrity, confidentiality and privacy to information. A secure cloud is impossible unless the computer-generated environment is appropriately secured. In any form of technology it is always advisable that security challenges must be prior identified and fixed before the implementation of that particular technology. Primarily, this study will focus on finding security issues in cloud computing with the objective of finding concerns like credential theft and session management in the ―Cloud‖. Main arguments like HTTP banner disclosure, Bash ―ShellShock‖ Injection and password issues were discovered during the stages of study implementation. These challenges may provide information that will permit hackers in manipulating and exploiting cloud environment. Identifying credential theft and session management in cloud-based file sharing technologies a mixed method approach was implemented throughout the course of the study due to the nature of study and unity of analysis. Penetration tests were performed as security testing technique. Prevention and guideline of security threats leads to a friendly and authentic world of technology.
- Full Text:
- Date Issued: 2015
The potential of dance education to promote social cohesion in a post-conflict society: perspectives of South African pre-service student teachers
- Authors: Marx, Margaretha Elizabeth
- Date: 2015
- Subjects: Student teachers -- South Africa , Dance in education -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/4474 , vital:20605
- Description: This study constitutes a theoretical and qualitative investigation into the meanings and locations of social cohesion in dance education. Theoretical connections between culture, dance education and social cohesion are explored. The empirical investigation is designed as a qualitative case study interrogating pre-service student teachers’ experiences and perceptions of a particular dance education course in a culturally and politically diverse university classroom in post-apartheid South Africa. Open-ended questionnaires, reflective journals and focus group interviews were employed to generate data. Findings indicate that involvement in creative movement and ethno-cultural dances raised awareness of the Self and the Other, engendering perspective and personal transformation, important requisites for social transformation and subsequently social cohesion in a formerly divided society, such as South Africa. In addition, these dance education experiences provided participants with unique encounters with the Other’s culture. These occurred through embodied experiences of the culture of the Other, as well as through bodily negotiations with the Other. These findings lead me to argue that dance education, as pertaining to this particular course, can facilitate spaces conducive to cohesion amongst culturally and politically diverse participants in post-apartheid South Africa.
- Full Text:
- Date Issued: 2015
- Authors: Marx, Margaretha Elizabeth
- Date: 2015
- Subjects: Student teachers -- South Africa , Dance in education -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/4474 , vital:20605
- Description: This study constitutes a theoretical and qualitative investigation into the meanings and locations of social cohesion in dance education. Theoretical connections between culture, dance education and social cohesion are explored. The empirical investigation is designed as a qualitative case study interrogating pre-service student teachers’ experiences and perceptions of a particular dance education course in a culturally and politically diverse university classroom in post-apartheid South Africa. Open-ended questionnaires, reflective journals and focus group interviews were employed to generate data. Findings indicate that involvement in creative movement and ethno-cultural dances raised awareness of the Self and the Other, engendering perspective and personal transformation, important requisites for social transformation and subsequently social cohesion in a formerly divided society, such as South Africa. In addition, these dance education experiences provided participants with unique encounters with the Other’s culture. These occurred through embodied experiences of the culture of the Other, as well as through bodily negotiations with the Other. These findings lead me to argue that dance education, as pertaining to this particular course, can facilitate spaces conducive to cohesion amongst culturally and politically diverse participants in post-apartheid South Africa.
- Full Text:
- Date Issued: 2015
An investigation into the mathematics teaching practices of non-isiXhosa-speaking teachers teaching isiXhosa-speaking 3rd Graders through the medium of Afrikaans
- Authors: Knoetze, Susanna
- Date: 2015
- Subjects: Mathematics -- Study and teaching (Elementary) -- South Africa -- Grahamstown , Language and education -- South Africa -- Grahamstown , Education, Elementary -- Evaluation -- South Africa -- Grahamstown , Mathematics teachers -- Rating -- South Africa -- Grahamstown , Language arts -- Correlation with content subjects -- South Africa -- Grahamstown , Native language and education -- South Africa -- Grahamstown , Second language acquisition , Xhosa language , Afrikaans language
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2054 , http://hdl.handle.net/10962/d1018910
- Description: There is a considerable body of literature on the challenges faced by learners who speak an African language at home but who are taught through the medium of English. Less research has focused, however, on contexts where isiXhosa-speaking learners have Afrikaans as their Language of Learning and Teaching (LoLT), especially in Foundation Phase classrooms where teachers may not speak their learners’ home language. Such learners face the triple challenge of simultaneously learning a second language, learning to read in that language, and also learning new content and concepts through it. Using a multiple case study design, this investigation explores the mathematics teaching practices of Afrikaans-speaking Grade 3 teachers teaching isiXhosa-speaking learners through the medium of Afrikaans. Separate contextual profiles of the teaching practices of the participating teachers at the three schools are presented. Data were derived from school, classroom, and lesson observations (at least five complete mathematics lessons of each teacher), plus interviews with the teachers and with their school principals. By drawing on Vygotskian sociocultural theory and the interactive model of second language acquisition, this study highlighted the teaching practices of the three teachers as they mediated their learners’ mathematical conceptual development. An inductive data analysis approach was used to isolate recurring themes and patterns. Four main themes were identified: structuring of teaching and learning, facilitating of interaction, language use and implementation of mediating strategies. Analysis of the data shows that all three teachers’ language use displayed high levels of modified input, and high levels of context-embedded support. The levels of scaffolded learner talk were, however, found to be much lower than the levels of teacher talk, especially as far as academic registers were concerned. The teachers’ mediation strategies also displayed high levels of teacher-directed input which, on the whole, did not provide optimal opportunities for learners to develop independent levels of academic discourse. The study highlights the need for further research to inform teacher education and development with regard to more effective support structures to assist teachers with the sorts of challenges outlined above.
- Full Text:
- Date Issued: 2015
- Authors: Knoetze, Susanna
- Date: 2015
- Subjects: Mathematics -- Study and teaching (Elementary) -- South Africa -- Grahamstown , Language and education -- South Africa -- Grahamstown , Education, Elementary -- Evaluation -- South Africa -- Grahamstown , Mathematics teachers -- Rating -- South Africa -- Grahamstown , Language arts -- Correlation with content subjects -- South Africa -- Grahamstown , Native language and education -- South Africa -- Grahamstown , Second language acquisition , Xhosa language , Afrikaans language
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2054 , http://hdl.handle.net/10962/d1018910
- Description: There is a considerable body of literature on the challenges faced by learners who speak an African language at home but who are taught through the medium of English. Less research has focused, however, on contexts where isiXhosa-speaking learners have Afrikaans as their Language of Learning and Teaching (LoLT), especially in Foundation Phase classrooms where teachers may not speak their learners’ home language. Such learners face the triple challenge of simultaneously learning a second language, learning to read in that language, and also learning new content and concepts through it. Using a multiple case study design, this investigation explores the mathematics teaching practices of Afrikaans-speaking Grade 3 teachers teaching isiXhosa-speaking learners through the medium of Afrikaans. Separate contextual profiles of the teaching practices of the participating teachers at the three schools are presented. Data were derived from school, classroom, and lesson observations (at least five complete mathematics lessons of each teacher), plus interviews with the teachers and with their school principals. By drawing on Vygotskian sociocultural theory and the interactive model of second language acquisition, this study highlighted the teaching practices of the three teachers as they mediated their learners’ mathematical conceptual development. An inductive data analysis approach was used to isolate recurring themes and patterns. Four main themes were identified: structuring of teaching and learning, facilitating of interaction, language use and implementation of mediating strategies. Analysis of the data shows that all three teachers’ language use displayed high levels of modified input, and high levels of context-embedded support. The levels of scaffolded learner talk were, however, found to be much lower than the levels of teacher talk, especially as far as academic registers were concerned. The teachers’ mediation strategies also displayed high levels of teacher-directed input which, on the whole, did not provide optimal opportunities for learners to develop independent levels of academic discourse. The study highlights the need for further research to inform teacher education and development with regard to more effective support structures to assist teachers with the sorts of challenges outlined above.
- Full Text:
- Date Issued: 2015
An assessment of the management of the quality of Education and its impact on Learners’ academic performance in selected Schools in Mthatha, South Africa
- Authors: Kariyana, Israel
- Date: 2015
- Subjects: Quality education -- Schools -- South Africa Academic performance -- Learners -- South Africa -- Mthatha School management – Teaching and learning School management team (SMT)
- Language: English
- Type: Thesis , Doctoral , D Ed
- Identifier: http://hdl.handle.net/11260/1302 , vital:30800
- Description: The study sought to assess the impact on learners‘ academic performance of the management of the quality of education in South African schools. The study was conducted in ten independent and ten public schools in Mthatha. The study elicited information for quantitative data from 60 school management team (SMT) members, 200 educators and 400 learners who were randomly sampled from the participating purposively sampled schools. Qualitative data and document analysis were used to triangulate quantitative findings. Data collected was coded and analysed thematically. Quantitative data were analysed with the aid of the SPSS version 22 and qualitative data were analysed through content analysis. Quantitative data were presented through a blend of both descriptive and inferential statistics using tables and graphs. The study found that school management teams (SMTs) and educators were more aware than learners that there are national and provincial legislation mandates that guide the management of quality in education. However, stakeholders were of the view that schools did not use relevant national, provincial and school-based policies and procedures to guide the provision and management of quality in education. It also emerged that learners did not conduct themselves in a manner that promoted the provision of quality education. Participants were, nevertheless agreeable on the indicators of high-quality education. SMTs and educators held stronger views than learners about schools having clear vision and mission statements (VMS) in place but neither were displayed for all to see nor were they well known to and supported by the ii SMTs, educators and learners, thus they were not implemented. The study also established that respondents were aware of the educator-centred, SMT-centred as well as learner-centred factors that affected the quality of education and that factors that promote high-quality education were largely absent in schools. Stakeholders also agreed about the effects of factors that affected the quality of education on learner performance such as poor training and development of educators. It emerged that there were positive SMT-centred factors such as promoting professional development of staff; educator-centred factors including maintaining exceptional lesson planning standards and presentation skills; learner-centred factors being geared towards school work while high parental involvement in school activities emerged as the overriding home-based factor noted to have a strong, positive impact on the provision of quality education and learner performance. It also emerged from the study that inter-alia, stakeholders viewed performance measurement and management as important and holding SMTs and educators accountable for poor school performance as an imperative measure for the provision of quality education. Recommendations for practice and for further research were made with a view to improving the management of the quality of education in schools. In light of that, a model for the management of the quality of education and learner performance was proposed.
- Full Text:
- Date Issued: 2015
- Authors: Kariyana, Israel
- Date: 2015
- Subjects: Quality education -- Schools -- South Africa Academic performance -- Learners -- South Africa -- Mthatha School management – Teaching and learning School management team (SMT)
- Language: English
- Type: Thesis , Doctoral , D Ed
- Identifier: http://hdl.handle.net/11260/1302 , vital:30800
- Description: The study sought to assess the impact on learners‘ academic performance of the management of the quality of education in South African schools. The study was conducted in ten independent and ten public schools in Mthatha. The study elicited information for quantitative data from 60 school management team (SMT) members, 200 educators and 400 learners who were randomly sampled from the participating purposively sampled schools. Qualitative data and document analysis were used to triangulate quantitative findings. Data collected was coded and analysed thematically. Quantitative data were analysed with the aid of the SPSS version 22 and qualitative data were analysed through content analysis. Quantitative data were presented through a blend of both descriptive and inferential statistics using tables and graphs. The study found that school management teams (SMTs) and educators were more aware than learners that there are national and provincial legislation mandates that guide the management of quality in education. However, stakeholders were of the view that schools did not use relevant national, provincial and school-based policies and procedures to guide the provision and management of quality in education. It also emerged that learners did not conduct themselves in a manner that promoted the provision of quality education. Participants were, nevertheless agreeable on the indicators of high-quality education. SMTs and educators held stronger views than learners about schools having clear vision and mission statements (VMS) in place but neither were displayed for all to see nor were they well known to and supported by the ii SMTs, educators and learners, thus they were not implemented. The study also established that respondents were aware of the educator-centred, SMT-centred as well as learner-centred factors that affected the quality of education and that factors that promote high-quality education were largely absent in schools. Stakeholders also agreed about the effects of factors that affected the quality of education on learner performance such as poor training and development of educators. It emerged that there were positive SMT-centred factors such as promoting professional development of staff; educator-centred factors including maintaining exceptional lesson planning standards and presentation skills; learner-centred factors being geared towards school work while high parental involvement in school activities emerged as the overriding home-based factor noted to have a strong, positive impact on the provision of quality education and learner performance. It also emerged from the study that inter-alia, stakeholders viewed performance measurement and management as important and holding SMTs and educators accountable for poor school performance as an imperative measure for the provision of quality education. Recommendations for practice and for further research were made with a view to improving the management of the quality of education in schools. In light of that, a model for the management of the quality of education and learner performance was proposed.
- Full Text:
- Date Issued: 2015
The integration of previously hospital based Antiretroviral sites into Primary Health Care clinics in Lukhanji sub district of Chris Hani District Municipality
- Authors: Pakade, Nonkoliso
- Date: 2015
- Subjects: HIV/AIDS -- Antiretroviral(ARV) -- Eastern Cape -- South Africa Human Immune Virus(HIV) -- Antiretroviral therapy(ART) treatment
- Language: English
- Type: Thesis , Masters/Doctoral , MSc Nursing
- Identifier: http://hdl.handle.net/11260/1431 , vital:35585
- Description: The first country to take note of HIV/AIDS was United States of America in the report published by Atlanta based Centers for Disease Control (CDC) and Prevention (Barnett and Whiteside, 2006). In the past years ARV program was largely hospital-based where clients were assessed by doctors, discussed with multidisciplinary team which involved social workers, dieticians and pharmacists before initiated on treatment. The integration of ARV services into PHC was one of the strategies proposed to increase access to treatment for people living with HIV/AIDS (WHO, 2010). The study sought to describe the integration of previously hospital based ARV sites into PHC clinics in Lukhanji sub-district of Chris Hani Health District in Eastern Cape. A qualitative research design was followed and a phenomenological approach was used to examine the experiences of clients who previously took ARV treatment at Frontier hospital and were transferred to take treatment at Ezibeleni, Ilinge, Philani and Sada clinics. An interview guide was used for data collection. Participants were sampled through purposive sampling. The study was composed of four focus groups for clients with a total of forty (18 males and 22 females) and 10 professional nurses for semi structured individual interviews. In the analysis of data, the collected data from voice recordings were transcribed verbatim and translated from isiXhosa to English. The researcher immersed herself into the data, re read, and themes and sub-themes emerged. Related topics to each other were grouped together in order to reduce the number of categories and to create themes. The similar categories were grouped and analyzed. Findings indicated that integration of ART sites into PHC clinics was a strategy put in place to increase accessibility and availability of ARV treatment to all communities. Both participants stated that integration brought services nearer to people and caused much relief from spending more money for travelling long distances. Ambulance delays were reported by both participants as the major challenge in the referral system between clinics and the hospital. Other challenges facing integration of ART services into PHC clinics included long waiting times caused by shortage of staff in the clinics, lack of consulting rooms for nurses and waiting areas for clients. Also lack of other health care professionals including social workers, dieticians, and psychologists was mentioned. The recommendations made by the researcher on the conclusion of this study addressed all the challenges mentioned by participants. The aim was to increase accessibility and availability of ART services to all the communities.
- Full Text:
- Date Issued: 2015
- Authors: Pakade, Nonkoliso
- Date: 2015
- Subjects: HIV/AIDS -- Antiretroviral(ARV) -- Eastern Cape -- South Africa Human Immune Virus(HIV) -- Antiretroviral therapy(ART) treatment
- Language: English
- Type: Thesis , Masters/Doctoral , MSc Nursing
- Identifier: http://hdl.handle.net/11260/1431 , vital:35585
- Description: The first country to take note of HIV/AIDS was United States of America in the report published by Atlanta based Centers for Disease Control (CDC) and Prevention (Barnett and Whiteside, 2006). In the past years ARV program was largely hospital-based where clients were assessed by doctors, discussed with multidisciplinary team which involved social workers, dieticians and pharmacists before initiated on treatment. The integration of ARV services into PHC was one of the strategies proposed to increase access to treatment for people living with HIV/AIDS (WHO, 2010). The study sought to describe the integration of previously hospital based ARV sites into PHC clinics in Lukhanji sub-district of Chris Hani Health District in Eastern Cape. A qualitative research design was followed and a phenomenological approach was used to examine the experiences of clients who previously took ARV treatment at Frontier hospital and were transferred to take treatment at Ezibeleni, Ilinge, Philani and Sada clinics. An interview guide was used for data collection. Participants were sampled through purposive sampling. The study was composed of four focus groups for clients with a total of forty (18 males and 22 females) and 10 professional nurses for semi structured individual interviews. In the analysis of data, the collected data from voice recordings were transcribed verbatim and translated from isiXhosa to English. The researcher immersed herself into the data, re read, and themes and sub-themes emerged. Related topics to each other were grouped together in order to reduce the number of categories and to create themes. The similar categories were grouped and analyzed. Findings indicated that integration of ART sites into PHC clinics was a strategy put in place to increase accessibility and availability of ARV treatment to all communities. Both participants stated that integration brought services nearer to people and caused much relief from spending more money for travelling long distances. Ambulance delays were reported by both participants as the major challenge in the referral system between clinics and the hospital. Other challenges facing integration of ART services into PHC clinics included long waiting times caused by shortage of staff in the clinics, lack of consulting rooms for nurses and waiting areas for clients. Also lack of other health care professionals including social workers, dieticians, and psychologists was mentioned. The recommendations made by the researcher on the conclusion of this study addressed all the challenges mentioned by participants. The aim was to increase accessibility and availability of ART services to all the communities.
- Full Text:
- Date Issued: 2015
An investigation into the synergistic action of cellulose-degrading enzymes on complex substrates
- Authors: Thoresen, Mariska
- Date: 2015
- Subjects: Lignocellulose , Biomass energy , Cellulosic ethanol , Saccharomyces cerevisiae , Cellulase , Enzymes -- Biotechnology , Hydrolases
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4154 , http://hdl.handle.net/10962/d1017915
- Full Text:
- Date Issued: 2015
- Authors: Thoresen, Mariska
- Date: 2015
- Subjects: Lignocellulose , Biomass energy , Cellulosic ethanol , Saccharomyces cerevisiae , Cellulase , Enzymes -- Biotechnology , Hydrolases
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4154 , http://hdl.handle.net/10962/d1017915
- Full Text:
- Date Issued: 2015