The influence of power distance relationships on the success of lean manufacturing implementations
- Authors: De Beer, Lourens
- Date: 2016
- Subjects: Lean manufacturing , Corporate culture
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/6919 , vital:21166
- Description: The research project measured the influence of lean culture elements as well as power distance elements on the success of lean manufacturing implementations. The literature review revealed that lean transformations are not always successful and sustainable since organisation see these as quick win opportunities to improve short term profits. Lean, however, is a long term philosophy that entails not just quick changes but a fundamental change in the way that business is done. The elements that were measured in the study were organisational awareness, employee engagement, managerial consistency, accountability, mutual respect and autocratic behaviour. The study revealed a strong relationship between these factors and the success of lean implementations. The results indicated that there is a positive relationship between lean culture and the other lean elements. The study also indicated that autocratic behaviour has a positive relationship to lean implementation. The study showed that tools that were developed in the past are valid across various industries and that power distance does play a role in lean implementations.
- Full Text:
- Date Issued: 2016
- Authors: De Beer, Lourens
- Date: 2016
- Subjects: Lean manufacturing , Corporate culture
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/6919 , vital:21166
- Description: The research project measured the influence of lean culture elements as well as power distance elements on the success of lean manufacturing implementations. The literature review revealed that lean transformations are not always successful and sustainable since organisation see these as quick win opportunities to improve short term profits. Lean, however, is a long term philosophy that entails not just quick changes but a fundamental change in the way that business is done. The elements that were measured in the study were organisational awareness, employee engagement, managerial consistency, accountability, mutual respect and autocratic behaviour. The study revealed a strong relationship between these factors and the success of lean implementations. The results indicated that there is a positive relationship between lean culture and the other lean elements. The study also indicated that autocratic behaviour has a positive relationship to lean implementation. The study showed that tools that were developed in the past are valid across various industries and that power distance does play a role in lean implementations.
- Full Text:
- Date Issued: 2016
Customer satisfaction with the guesthouse experience in Ghana
- Authors: Amoah, Felix
- Date: 2016
- Subjects: Consumer satisfaction -- Ghana , Hospitality industry -- Ghana -- Management , Tourism -- Ghana -- Marketing
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: http://hdl.handle.net/10948/6073 , vital:21036
- Description: Guesthouse accommodation plays an important role in Ghana’s hospitality industry and was therefore the focus of this study as little research dealing with guesthouses in Ghana could be found. The number of guesthouses in Ghana continues to grow and they thus represent an important alternative to hotels. However, these establishments seem to perform poorly and face several challenges such as lack of managerial knowledge, insufficiently skilled employees, poor interaction with customers, and criticisms of the provision of low quality service. The main reason for undertaking this research was to provide guesthouse managers in Ghana with information that might assist them in making decisions about the experience they offer. Such knowledge could make this type of accommodation more competitive and eventually help the hospitality sector in Ghana attract tourists and grow. It is imperative that guesthouses focus on the experience they offer, because contemporary tourism and hospitality literature suggest that successful businesses require a shift from functional and financial interests to a more profound focus on total experiences which embody emotional aspects. It is thus argued that, if guesthouse managers in Ghana do not know how their guests perceive their guesthouse experience, they might make costly mistakes and allocate resources to aspects that already provide quality and value in a functional sense, instead of those elements perceived as providing quality and value in the total experience. Two dominating concepts, namely experience quality and experience value, formed the basis of the examination of guests’ experience with the guesthouses in Ghana. In addition, the relationships between the experience and satisfaction were also investigated. Four experience quality dimensions, namely hedonics, peace of mind, involvement, and recognition, and seven value dimensions were examined. The experience value dimensions included atmospherics, enjoyment, entertainment, efficiency, excellence, escape, and economic value. A proportional stratified random sampling procedure was followed to select the guesthouses for the study. Thereafter, a structured questionnaire was distributed to the guesthouse guests selected by means of convenience sampling. Five hundred and forty one useable questionnaires were received. The guesthouse guests formed the primary sampling unit for this study. The results of the empirical study showed a strong positive correlation between all the dimensions of experience quality and experience value, while the factor analysis confirmed that all these dimensions loaded on a single factor. Therefore, experience quality and experience value cannot be separated, and the resulting single multi-dimensional factor was subsequently renamed, overall experience. The results also indicated a positive relationship between hedonics, peace of mind, involvement, recognition, atmospherics, enjoyment, entertainment, efficiency, excellence, escape, economic value, and overall satisfaction. The inferentially established rank-order of the dimensions contributing to satisfaction can guide managers when allocating resources. Overall, atmospherics was ranked first, followed by economic value. Escape was the lowest ranked dimension. In addition, it was found that, except for escape, all the experience dimensions were perceived as basic satisfiers. This implies that guests will be dissatisfied when provision of these dimensions is inadequate. With regard to escape, listed as a performance factor, guests will be satisfied when performance is improved and dissatisfied when performance is low. A positive relationship was also found between overall experience and overall satisfaction. The latter include the likelihood of return and recommending the guesthouse to others. Finally, structural equation modelling confirmed a model representing the 11 experience dimensions (hedonics, peace of mind, involvement, recognition, atmospherics, enjoyment, entertainment, escape, efficiency, excellence, and economic value) and the relationships between overall experience and overall satisfaction pertaining to guesthouses in Ghana.
- Full Text:
- Date Issued: 2016
- Authors: Amoah, Felix
- Date: 2016
- Subjects: Consumer satisfaction -- Ghana , Hospitality industry -- Ghana -- Management , Tourism -- Ghana -- Marketing
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: http://hdl.handle.net/10948/6073 , vital:21036
- Description: Guesthouse accommodation plays an important role in Ghana’s hospitality industry and was therefore the focus of this study as little research dealing with guesthouses in Ghana could be found. The number of guesthouses in Ghana continues to grow and they thus represent an important alternative to hotels. However, these establishments seem to perform poorly and face several challenges such as lack of managerial knowledge, insufficiently skilled employees, poor interaction with customers, and criticisms of the provision of low quality service. The main reason for undertaking this research was to provide guesthouse managers in Ghana with information that might assist them in making decisions about the experience they offer. Such knowledge could make this type of accommodation more competitive and eventually help the hospitality sector in Ghana attract tourists and grow. It is imperative that guesthouses focus on the experience they offer, because contemporary tourism and hospitality literature suggest that successful businesses require a shift from functional and financial interests to a more profound focus on total experiences which embody emotional aspects. It is thus argued that, if guesthouse managers in Ghana do not know how their guests perceive their guesthouse experience, they might make costly mistakes and allocate resources to aspects that already provide quality and value in a functional sense, instead of those elements perceived as providing quality and value in the total experience. Two dominating concepts, namely experience quality and experience value, formed the basis of the examination of guests’ experience with the guesthouses in Ghana. In addition, the relationships between the experience and satisfaction were also investigated. Four experience quality dimensions, namely hedonics, peace of mind, involvement, and recognition, and seven value dimensions were examined. The experience value dimensions included atmospherics, enjoyment, entertainment, efficiency, excellence, escape, and economic value. A proportional stratified random sampling procedure was followed to select the guesthouses for the study. Thereafter, a structured questionnaire was distributed to the guesthouse guests selected by means of convenience sampling. Five hundred and forty one useable questionnaires were received. The guesthouse guests formed the primary sampling unit for this study. The results of the empirical study showed a strong positive correlation between all the dimensions of experience quality and experience value, while the factor analysis confirmed that all these dimensions loaded on a single factor. Therefore, experience quality and experience value cannot be separated, and the resulting single multi-dimensional factor was subsequently renamed, overall experience. The results also indicated a positive relationship between hedonics, peace of mind, involvement, recognition, atmospherics, enjoyment, entertainment, efficiency, excellence, escape, economic value, and overall satisfaction. The inferentially established rank-order of the dimensions contributing to satisfaction can guide managers when allocating resources. Overall, atmospherics was ranked first, followed by economic value. Escape was the lowest ranked dimension. In addition, it was found that, except for escape, all the experience dimensions were perceived as basic satisfiers. This implies that guests will be dissatisfied when provision of these dimensions is inadequate. With regard to escape, listed as a performance factor, guests will be satisfied when performance is improved and dissatisfied when performance is low. A positive relationship was also found between overall experience and overall satisfaction. The latter include the likelihood of return and recommending the guesthouse to others. Finally, structural equation modelling confirmed a model representing the 11 experience dimensions (hedonics, peace of mind, involvement, recognition, atmospherics, enjoyment, entertainment, escape, efficiency, excellence, and economic value) and the relationships between overall experience and overall satisfaction pertaining to guesthouses in Ghana.
- Full Text:
- Date Issued: 2016
A framework for grain commodity trading decision support in South Africa
- Authors: Ayankoya, Kayode Anthony
- Date: 2016
- Subjects: Grain trade -- South Africa Commodity exchanges -- South Africa Food industry and trade -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/11437 , vital:26925
- Description: In several countries around the world, grain commodities are traded as assets on stock exchanges. This indicate that the market and effectively the prices of the grain commodities in such countries, are controlled by several local and international economic, political and social factors that are rapidly changing. As a result, the prices of some grain commodities are volatile and trading in such commodities are prone to price-related risks. There are different trading strategies for minimising price-related risks and maximising profits. But empirical research suggests that making the right decision for effective grain commodities trading has been a difficult task for stakeholders due to high volatility of grain commodities prices. Studies have shown that this is more challenging among grain commodities farmers because of their lack of skills and the time to sift through and make sense of the datasets on the plethora of factors that influence the grain commodities market. This thesis focused on providing an answer for the main research problem that grain farmers in South Africa do not take full advantage of all the available strategies for trading their grain commodities because of the complexities associated with monitoring the large datasets that influence the grain commodities market. The main objective set by this study is to design a framework that can be followed to collect, integrate and analyse datasets that influence trading decisions of grain farmers in South Africa about grain commodities. This study takes advantage of the developments in Big Data and Data Science to achieve the set objective using the Design Science Research (DSR) methodology. The prediction of future prices of grain commodities for the different trading strategies was identified as an important factor for making better decisions when trading grain commodities and the key factors that influence the prices were identified. This was followed by a critical review of the literature to determine how the concepts of Big Data and Data Science can be leveraged for an effective grain commodities trading decision support. This resulted in a proposed framework for grain commodities trading. The proposed framework suggested an investigation of the factors that influence the prices of grain commodities as the basis for acquiring the relevant datasets. The proposed framework suggested the adoption of the Big Data approach in acquiring, preparing and integrating relevant datasets from several sources. Furthermore, it was suggested that algorithmic models for predicting grain commodities prices can be developed on top of the data layer of the proposed framework to provide real-time decision support. The proposed framework suggests the need for a carefully designed visualisation of the result and the collected data that promotes user experience. Lastly, the proposed framework included a technology consideration component to support the Big Data and Data Science approach of the framework. To demonstrate that the proposed framework addressed the main problem of this research, datasets from several sources on trading white maize in South Africa and the factors that influence market were streamed, integrated and analysed. Backpropagation Neural Network algorithm was used for modelling the prices of white maize for spot and futures trading strategies were predicted. There are other modelling techniques such as the Box-Jenkins statistical time series analysis methodology. But, Neural Networks was identified as more suitable for time series data with complex patterns and relationships. A demonstration system was setup to provide effective decision support by using near real-time data to provide a dynamic predictive analytics for the spot and December futures contract prices of white maize in South Africa. Comparative analysis of predictions made using the model from the proposed framework to actual data indicated a significant degree of accuracy. A further evaluation was carried out by asking experienced traders to make predictions for the spot and December futures contract prices of white maize. The result of the exercise indicated that the predictions from the developed model were much closer to the actual prices. This indicated that the proposed framework is technically capable and generally useful. It also shows that the proposed framework can be used to provide decision support about trading grain commodities to stakeholders with lesser skills, experience and resources. The practical contribution of this thesis is that relevant datasets from several sources can be streamed into an integrated data source in real-time, which can be used as input for a real-time learning algorithmic model for predicting grain commodities prices. This will make it possible for a predictive analytics that responds to market volatility thereby providing an effective decision support for grain commodities trading. Another practical contribution of this thesis is a proposed framework that can be followed for developing a Decision Support System for trading in grain commodities. This thesis made theoretical contributions by building on the information processing theory and the decision making theory. The theoretical contribution of this thesis consists of the identification of Big Data approach, tools and techniques for eradicating uncertainty and equivocality in grain commodities trading decision making process.
- Full Text:
- Date Issued: 2016
- Authors: Ayankoya, Kayode Anthony
- Date: 2016
- Subjects: Grain trade -- South Africa Commodity exchanges -- South Africa Food industry and trade -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10948/11437 , vital:26925
- Description: In several countries around the world, grain commodities are traded as assets on stock exchanges. This indicate that the market and effectively the prices of the grain commodities in such countries, are controlled by several local and international economic, political and social factors that are rapidly changing. As a result, the prices of some grain commodities are volatile and trading in such commodities are prone to price-related risks. There are different trading strategies for minimising price-related risks and maximising profits. But empirical research suggests that making the right decision for effective grain commodities trading has been a difficult task for stakeholders due to high volatility of grain commodities prices. Studies have shown that this is more challenging among grain commodities farmers because of their lack of skills and the time to sift through and make sense of the datasets on the plethora of factors that influence the grain commodities market. This thesis focused on providing an answer for the main research problem that grain farmers in South Africa do not take full advantage of all the available strategies for trading their grain commodities because of the complexities associated with monitoring the large datasets that influence the grain commodities market. The main objective set by this study is to design a framework that can be followed to collect, integrate and analyse datasets that influence trading decisions of grain farmers in South Africa about grain commodities. This study takes advantage of the developments in Big Data and Data Science to achieve the set objective using the Design Science Research (DSR) methodology. The prediction of future prices of grain commodities for the different trading strategies was identified as an important factor for making better decisions when trading grain commodities and the key factors that influence the prices were identified. This was followed by a critical review of the literature to determine how the concepts of Big Data and Data Science can be leveraged for an effective grain commodities trading decision support. This resulted in a proposed framework for grain commodities trading. The proposed framework suggested an investigation of the factors that influence the prices of grain commodities as the basis for acquiring the relevant datasets. The proposed framework suggested the adoption of the Big Data approach in acquiring, preparing and integrating relevant datasets from several sources. Furthermore, it was suggested that algorithmic models for predicting grain commodities prices can be developed on top of the data layer of the proposed framework to provide real-time decision support. The proposed framework suggests the need for a carefully designed visualisation of the result and the collected data that promotes user experience. Lastly, the proposed framework included a technology consideration component to support the Big Data and Data Science approach of the framework. To demonstrate that the proposed framework addressed the main problem of this research, datasets from several sources on trading white maize in South Africa and the factors that influence market were streamed, integrated and analysed. Backpropagation Neural Network algorithm was used for modelling the prices of white maize for spot and futures trading strategies were predicted. There are other modelling techniques such as the Box-Jenkins statistical time series analysis methodology. But, Neural Networks was identified as more suitable for time series data with complex patterns and relationships. A demonstration system was setup to provide effective decision support by using near real-time data to provide a dynamic predictive analytics for the spot and December futures contract prices of white maize in South Africa. Comparative analysis of predictions made using the model from the proposed framework to actual data indicated a significant degree of accuracy. A further evaluation was carried out by asking experienced traders to make predictions for the spot and December futures contract prices of white maize. The result of the exercise indicated that the predictions from the developed model were much closer to the actual prices. This indicated that the proposed framework is technically capable and generally useful. It also shows that the proposed framework can be used to provide decision support about trading grain commodities to stakeholders with lesser skills, experience and resources. The practical contribution of this thesis is that relevant datasets from several sources can be streamed into an integrated data source in real-time, which can be used as input for a real-time learning algorithmic model for predicting grain commodities prices. This will make it possible for a predictive analytics that responds to market volatility thereby providing an effective decision support for grain commodities trading. Another practical contribution of this thesis is a proposed framework that can be followed for developing a Decision Support System for trading in grain commodities. This thesis made theoretical contributions by building on the information processing theory and the decision making theory. The theoretical contribution of this thesis consists of the identification of Big Data approach, tools and techniques for eradicating uncertainty and equivocality in grain commodities trading decision making process.
- Full Text:
- Date Issued: 2016
The impact of inflation on financial development in South Africa
- Authors: Muzvanya, Kudzai Fungai
- Date: 2016
- Subjects: Economic development Monetary policy Consumer price indexes
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/13045 , vital:39440
- Description: Growing theoretical and empirical studies have predicted different influences that inflation has on financial development in different economies. This dissertation observes the impact South Africa’s inflation has on financial development over the period between 1990 and 2012. Monetary policy framework in South Africa has, to a greater extent, assisted in monitoring the movement of the consumer price index. Although inflation does affect financial sector performance, the study also looked into other variables that have an effect like private credit, money supply and gross domestic product. To test for stationarity to avoid spurious regression, the ADF test and the PP test were used. To determine the long- and short-run relationship, the Johansen Maximum Likelihood test and VECM models were used. Results of the study indicated that money supply and inflation have a negative effect on financial development. In addition, apart from money supply and inflation the findings revealed that private credit and gross domestic product play a significant part in financial sector performance. The study recommends that the South African Reserve Bank should keep the inflation rate within its target range (3-6percent). This would ensure price stability and restore investor confidence in the financial sector, which then improves financial sector development.
- Full Text:
- Date Issued: 2016
- Authors: Muzvanya, Kudzai Fungai
- Date: 2016
- Subjects: Economic development Monetary policy Consumer price indexes
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/13045 , vital:39440
- Description: Growing theoretical and empirical studies have predicted different influences that inflation has on financial development in different economies. This dissertation observes the impact South Africa’s inflation has on financial development over the period between 1990 and 2012. Monetary policy framework in South Africa has, to a greater extent, assisted in monitoring the movement of the consumer price index. Although inflation does affect financial sector performance, the study also looked into other variables that have an effect like private credit, money supply and gross domestic product. To test for stationarity to avoid spurious regression, the ADF test and the PP test were used. To determine the long- and short-run relationship, the Johansen Maximum Likelihood test and VECM models were used. Results of the study indicated that money supply and inflation have a negative effect on financial development. In addition, apart from money supply and inflation the findings revealed that private credit and gross domestic product play a significant part in financial sector performance. The study recommends that the South African Reserve Bank should keep the inflation rate within its target range (3-6percent). This would ensure price stability and restore investor confidence in the financial sector, which then improves financial sector development.
- Full Text:
- Date Issued: 2016
“Turn on” fluorescence enhancement of Zn octacarboxyphthaloyanine-graphene oxide conjugates by hydrogen peroxide
- Shumba, Munyaradzi, Mashazi, Philani N, Nyokong, Tebello
- Authors: Shumba, Munyaradzi , Mashazi, Philani N , Nyokong, Tebello
- Date: 2016
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/190438 , vital:44994 , xlink:href="https://doi.org/10.1016/j.jlumin.2015.11.001"
- Description: Zn octacarboxy phthalocyanine-reduced graphene oxide or graphene oxide conjugates were characterized by absorption spectroscopy, transmission electron microscopy, fluorescence spectroscopy, X-ray diffraction, thermo gravimetric analysis and X-ray photon spectroscopy. The presence of reduced graphene oxide or graphene oxide resulted in the quenching (turn on) of Zn octacarboxy phthalocyanine fluorescence which can be explained by photoinduced electron transfer. Zn octacarboxy phthalocyaninereduced graphene oxide or graphene oxide conjugates “turned on” fluorescence showed a linear response to hydrogen peroxide hence their potential to be used as sensors. The nanoprobe developed showed high selectivity towards hydrogen peroxide in the presence of physiological interferences.
- Full Text:
- Date Issued: 2016
- Authors: Shumba, Munyaradzi , Mashazi, Philani N , Nyokong, Tebello
- Date: 2016
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/190438 , vital:44994 , xlink:href="https://doi.org/10.1016/j.jlumin.2015.11.001"
- Description: Zn octacarboxy phthalocyanine-reduced graphene oxide or graphene oxide conjugates were characterized by absorption spectroscopy, transmission electron microscopy, fluorescence spectroscopy, X-ray diffraction, thermo gravimetric analysis and X-ray photon spectroscopy. The presence of reduced graphene oxide or graphene oxide resulted in the quenching (turn on) of Zn octacarboxy phthalocyanine fluorescence which can be explained by photoinduced electron transfer. Zn octacarboxy phthalocyaninereduced graphene oxide or graphene oxide conjugates “turned on” fluorescence showed a linear response to hydrogen peroxide hence their potential to be used as sensors. The nanoprobe developed showed high selectivity towards hydrogen peroxide in the presence of physiological interferences.
- Full Text:
- Date Issued: 2016
Mesopredator release and the effectiveness of camera traps for estimating mammal abundances in the Eastern Cape, South Africa
- Authors: Taylor, Jonathan Michael
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/3587 , vital:20527
- Description: Remotely operated cameras (camera traps) have become an indispensable tool for many ecologists, particularly those studying rare and elusive animals. A plethora of camera trap makes and models are now commercially available, yet the effects of their varying design features on the quality and quantity of data recorded remains principally unknown. Better understanding of differing camera trap designs is needed before adequate management policies can be implemented, especially when the aim is to protect vulnerable and endangered species such as many carnivores. Habitat loss and human conflict has prompted worldwide declines of apex predator populations. Following this, many smaller predators have undergone population ‘explosions’ due to the lack of top-down forcing, a phenomenon known as mesopredator release. Land use changes in the Eastern Cape of South Africa have caused extensive degradation and fragmentation of the Subtropical Thicket Biome. In addition, coupled with anthropogenic persecution, apex predators including lions (Panthera leo), leopards (P. pardus), and brown hyaenas (Hyaena brunnea) have been extirpated from large areas of their historic range. Removal of these apex predators may provide opportunity for mesopredators, such as black-backed jackals (Canis mesomelas) and caracals (Caracal caracal), to be released from top-down forcing and possibly initiate trophic cascade effects. Therefore, using randomly distributed camera traps, my study aimed to explore the quality and quantity of data collected by different camera trap designs, and to investigate the mesopredator release hypothesis in the Eastern Cape of South Africa. A total of 2,989 trap nights was used to compare camera trap designs. Camera traps with narrow detection zones and fast trigger speeds (≤ 0.25 seconds) recorded a higher diversity of carnivores, but there was no significant difference in the relative abundances of carnivore species recorded by different camera trap models. A total of 19,659 trap nights was used to assess mesopredator relative abundance, occupancy, distribution and daily activity patterns at one site with, and one site without, apex predators. Consistent with the mesopredator release hypothesis, black-backed jackal relative abundance was significantly higher in the absence of apex predators, and this was supported by occupancy analyses. Further, black-backed jackal distribution was significantly concentrated in areas where apex predator activity was low, possibly indicating spatial avoidance. There was no significant difference in caracal relative abundance, occupancy, distribution, or daily activity between sites. These results provide the first indication of mesopredator release of blackbacked jackals in the Eastern Cape. The implications of black-backed jackal release including prey population structure, local extinctions, altered seed dispersal and disease dynamics are discussed.
- Full Text:
- Date Issued: 2016
- Authors: Taylor, Jonathan Michael
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/3587 , vital:20527
- Description: Remotely operated cameras (camera traps) have become an indispensable tool for many ecologists, particularly those studying rare and elusive animals. A plethora of camera trap makes and models are now commercially available, yet the effects of their varying design features on the quality and quantity of data recorded remains principally unknown. Better understanding of differing camera trap designs is needed before adequate management policies can be implemented, especially when the aim is to protect vulnerable and endangered species such as many carnivores. Habitat loss and human conflict has prompted worldwide declines of apex predator populations. Following this, many smaller predators have undergone population ‘explosions’ due to the lack of top-down forcing, a phenomenon known as mesopredator release. Land use changes in the Eastern Cape of South Africa have caused extensive degradation and fragmentation of the Subtropical Thicket Biome. In addition, coupled with anthropogenic persecution, apex predators including lions (Panthera leo), leopards (P. pardus), and brown hyaenas (Hyaena brunnea) have been extirpated from large areas of their historic range. Removal of these apex predators may provide opportunity for mesopredators, such as black-backed jackals (Canis mesomelas) and caracals (Caracal caracal), to be released from top-down forcing and possibly initiate trophic cascade effects. Therefore, using randomly distributed camera traps, my study aimed to explore the quality and quantity of data collected by different camera trap designs, and to investigate the mesopredator release hypothesis in the Eastern Cape of South Africa. A total of 2,989 trap nights was used to compare camera trap designs. Camera traps with narrow detection zones and fast trigger speeds (≤ 0.25 seconds) recorded a higher diversity of carnivores, but there was no significant difference in the relative abundances of carnivore species recorded by different camera trap models. A total of 19,659 trap nights was used to assess mesopredator relative abundance, occupancy, distribution and daily activity patterns at one site with, and one site without, apex predators. Consistent with the mesopredator release hypothesis, black-backed jackal relative abundance was significantly higher in the absence of apex predators, and this was supported by occupancy analyses. Further, black-backed jackal distribution was significantly concentrated in areas where apex predator activity was low, possibly indicating spatial avoidance. There was no significant difference in caracal relative abundance, occupancy, distribution, or daily activity between sites. These results provide the first indication of mesopredator release of blackbacked jackals in the Eastern Cape. The implications of black-backed jackal release including prey population structure, local extinctions, altered seed dispersal and disease dynamics are discussed.
- Full Text:
- Date Issued: 2016
The impact of the Mdantsane urban renewal programme on socio-economic development
- Authors: Ngxata, Thabile
- Date: 2016
- Subjects: Urban renewal -- South Africa -- Buffalo City Economic development -- South Africa -- Buffalo City Sustainable development -- South Africa -- Buffalo City
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/12593 , vital:27097
- Description: Urban Renewal which originates in the concept of Local Economic Development (LED) has in recent years gained much global acceptance as a strategy to improve certain areas that are poorly developed in order to improve the quality of lives of the local residents. South Africa have adopted the Urban Renewal approach and ever since, a number of national centres have been targeted for urban renewal activities. The Buffalo City Municipality (BCMM) implemented the Mdanstane Urban Renewal Programme (MURP) which is essentially the case study of this research. Despite the government instituting the Integrated Development Planning (IDP), Buffalo City still remains one of South Africa’s poorest metropolitan areas, with a relatively high unemployment and crime rate compared to other metropolitan cities in the country (Buffalo City Metropolitan Municipality,2012). The study, therefore, sought to empirically analyse the effectiveness of the URP as an initiative of Integrated Development Planning (IDP) particularly on how it has addressed socio-economic pathologies such as poverty and inequality rampant in the area of study. The Mdantsane Urban Renewal Programme was used to monitor and evaluate the impact it had on the communities and the municipality. The study used a mixed methods or triangulation approach as both qualitative and quantitative techniques were used in determining the effect of the MURP on local development as well as in exploring the different perceptions and challenges facing the programme. The data that was gathered was analysed both quantitatively using frequency tables and graphs, and qualitatively based on the key themes that emerged. The research established that whilst the MURP has scored some gains in refurbishing the area of study, there are still various challenges inherent in the MURP such as its non-inclusiveness, lack of transparency, accountability and the lack of real benefits accruing in the local communities. Thus, this research recognised a need for a more inclusive and pro-poor urban development framework that promotes local citizen participation, accountability, sustainability and equity in resource distribution and allocation, in order to improve the livehoods of the local people in Mdantsane.
- Full Text:
- Date Issued: 2016
- Authors: Ngxata, Thabile
- Date: 2016
- Subjects: Urban renewal -- South Africa -- Buffalo City Economic development -- South Africa -- Buffalo City Sustainable development -- South Africa -- Buffalo City
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/12593 , vital:27097
- Description: Urban Renewal which originates in the concept of Local Economic Development (LED) has in recent years gained much global acceptance as a strategy to improve certain areas that are poorly developed in order to improve the quality of lives of the local residents. South Africa have adopted the Urban Renewal approach and ever since, a number of national centres have been targeted for urban renewal activities. The Buffalo City Municipality (BCMM) implemented the Mdanstane Urban Renewal Programme (MURP) which is essentially the case study of this research. Despite the government instituting the Integrated Development Planning (IDP), Buffalo City still remains one of South Africa’s poorest metropolitan areas, with a relatively high unemployment and crime rate compared to other metropolitan cities in the country (Buffalo City Metropolitan Municipality,2012). The study, therefore, sought to empirically analyse the effectiveness of the URP as an initiative of Integrated Development Planning (IDP) particularly on how it has addressed socio-economic pathologies such as poverty and inequality rampant in the area of study. The Mdantsane Urban Renewal Programme was used to monitor and evaluate the impact it had on the communities and the municipality. The study used a mixed methods or triangulation approach as both qualitative and quantitative techniques were used in determining the effect of the MURP on local development as well as in exploring the different perceptions and challenges facing the programme. The data that was gathered was analysed both quantitatively using frequency tables and graphs, and qualitatively based on the key themes that emerged. The research established that whilst the MURP has scored some gains in refurbishing the area of study, there are still various challenges inherent in the MURP such as its non-inclusiveness, lack of transparency, accountability and the lack of real benefits accruing in the local communities. Thus, this research recognised a need for a more inclusive and pro-poor urban development framework that promotes local citizen participation, accountability, sustainability and equity in resource distribution and allocation, in order to improve the livehoods of the local people in Mdantsane.
- Full Text:
- Date Issued: 2016
Art investment in South Africa: portfolio diversification and art market efficiency
- Botha, Ferdi, Snowball, Jeanette D, Scott, Brett
- Authors: Botha, Ferdi , Snowball, Jeanette D , Scott, Brett
- Date: 2016
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/64794 , vital:28601 , http://www.dx.doi.org/10.17159/2222-3436/2016/v19n3a4
- Description: Art has been suggested as a good way to diversify investment portfolios during times of financial uncertainty. The argument is that art exhibits different risk and return characteristics to conventional investments in other asset classes. The new Citadel art price index offered the opportunity to test this theory in the South African context. Moreover, this paper tests whether art prices are efficient. The Citadel index uses the hedonic regression method with observations drawn from the top 100, 50 and 20 artists by sales volume, giving approximately 29 503 total auction observations. The Index consists of quarterly data from the period 2000Q1 to 2013Q3. A vector autoregression of the art price index, Johannesburg stock exchange all-share index, house price index, and South African government bond index were used. Results show that, when there are increased returns on the stock market in a preceding period and wealth increases, there is a change in the Citadel art price index in the same direction. No significant difference was found between the house price index and the art price index, or between the art and government bond price indices. The art market is also found to be inefficient, thereby exacerbating the risk of investing in art. Overall, the South African art market does not offer the opportunity to diversify portfolios dominated by either property, bonds, or shares.
- Full Text:
- Date Issued: 2016
- Authors: Botha, Ferdi , Snowball, Jeanette D , Scott, Brett
- Date: 2016
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/64794 , vital:28601 , http://www.dx.doi.org/10.17159/2222-3436/2016/v19n3a4
- Description: Art has been suggested as a good way to diversify investment portfolios during times of financial uncertainty. The argument is that art exhibits different risk and return characteristics to conventional investments in other asset classes. The new Citadel art price index offered the opportunity to test this theory in the South African context. Moreover, this paper tests whether art prices are efficient. The Citadel index uses the hedonic regression method with observations drawn from the top 100, 50 and 20 artists by sales volume, giving approximately 29 503 total auction observations. The Index consists of quarterly data from the period 2000Q1 to 2013Q3. A vector autoregression of the art price index, Johannesburg stock exchange all-share index, house price index, and South African government bond index were used. Results show that, when there are increased returns on the stock market in a preceding period and wealth increases, there is a change in the Citadel art price index in the same direction. No significant difference was found between the house price index and the art price index, or between the art and government bond price indices. The art market is also found to be inefficient, thereby exacerbating the risk of investing in art. Overall, the South African art market does not offer the opportunity to diversify portfolios dominated by either property, bonds, or shares.
- Full Text:
- Date Issued: 2016
Reimagining curriculum through a Bernsteinian lens: rethinking the canon in Political Science
- Authors: Clarence, Sherran
- Date: 2016
- Language: English
- Type: text , conference publication
- Identifier: http://hdl.handle.net/10962/66961 , vital:29006
- Full Text:
- Date Issued: 2016
- Authors: Clarence, Sherran
- Date: 2016
- Language: English
- Type: text , conference publication
- Identifier: http://hdl.handle.net/10962/66961 , vital:29006
- Full Text:
- Date Issued: 2016
Challenges facing water supply in the Polokwane Municipality, Mankweng Cluster
- Authors: Mashego, Irene Lerato
- Date: 2016
- Subjects: Municipal water supply -- South Africa -- Polokwane , Rural public utilities -- South Africa -- Polokwane
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/8109 , vital:25007
- Description: Polokwane Local Municipality is one of many municipalities in South Africa experiencing challenges of providing potable water services to their local residents. Residents’ dissatisfaction about poor potable water services have manifested in community protests. The study, which looks at the communities’ experience within the Makweng Cluster, aims to assess the main constraints facing Polokwane Local Municipality in providing potable water to the Mankweng Cluster.
- Full Text:
- Date Issued: 2016
- Authors: Mashego, Irene Lerato
- Date: 2016
- Subjects: Municipal water supply -- South Africa -- Polokwane , Rural public utilities -- South Africa -- Polokwane
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/8109 , vital:25007
- Description: Polokwane Local Municipality is one of many municipalities in South Africa experiencing challenges of providing potable water services to their local residents. Residents’ dissatisfaction about poor potable water services have manifested in community protests. The study, which looks at the communities’ experience within the Makweng Cluster, aims to assess the main constraints facing Polokwane Local Municipality in providing potable water to the Mankweng Cluster.
- Full Text:
- Date Issued: 2016
South African school teachers' perceptions of sustainable tourism
- Authors: Vosloo, Penelope Leigh
- Date: 2016
- Subjects: Sustainable tourism -- South Africa Tourism -- South Africa Leisure industry -- Research
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/13215 , vital:27162
- Description: Although much research has been conducted on sustainable tourism and the education thereof internationally, a limited number of studies have focussed on education of sustainable tourism in South African secondary schools. A literature overview identified various approaches to the education of sustainability on the international front. Despite South Africa’s reliance on the tourism industry, the concept of sustainability has received little focus in classrooms where this pertinent issue should be receiving attention in order to ensure that future sustainability is ensured in the South African tourism industry. From the literature overview it was possible to identify topics pertaining to sustainability in the Tourism Curriculum and Assessment Policy Statement implemented in the Further Education and Training Phase (FET) in South African secondary schools. These assisted in the development of the research tool for this study. The New Ecological Paradigm (NEP), an instrument used to establish the level of environmental concerns of groups of people, also provided guidance in the development of the research tool. The primary objective of this study is to investigate the perceptions of Tourism educators in secondary schools towards sustainability. A framework to investigate this was developed and three hypotheses formulated. To give effect to this, an empirical investigation was conducted. Tourism educators who were successful in their application to mark 2014 National Senior Certificate Tourism examinations were included in the sample of this study. The result of the descriptive statistics performed on the data showed that the level of education of the respondents was the main contributing demographic that impacted on their perceptions of sustainable tourism. It is, however, of concern to note that a very low percentage of the respondents (6.2%) have received formal training in Tourism. This situation should be cause for concern for Tourism education in the Eastern Cape. Two of the three hypotheses were accepted. The researcher believes that specialised subject relevant training is required to empower educators to teach sustainable tourism in the South African secondary school classrooms in order to ensure future sustainability in the tourism industry of South Africa.
- Full Text:
- Date Issued: 2016
- Authors: Vosloo, Penelope Leigh
- Date: 2016
- Subjects: Sustainable tourism -- South Africa Tourism -- South Africa Leisure industry -- Research
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/13215 , vital:27162
- Description: Although much research has been conducted on sustainable tourism and the education thereof internationally, a limited number of studies have focussed on education of sustainable tourism in South African secondary schools. A literature overview identified various approaches to the education of sustainability on the international front. Despite South Africa’s reliance on the tourism industry, the concept of sustainability has received little focus in classrooms where this pertinent issue should be receiving attention in order to ensure that future sustainability is ensured in the South African tourism industry. From the literature overview it was possible to identify topics pertaining to sustainability in the Tourism Curriculum and Assessment Policy Statement implemented in the Further Education and Training Phase (FET) in South African secondary schools. These assisted in the development of the research tool for this study. The New Ecological Paradigm (NEP), an instrument used to establish the level of environmental concerns of groups of people, also provided guidance in the development of the research tool. The primary objective of this study is to investigate the perceptions of Tourism educators in secondary schools towards sustainability. A framework to investigate this was developed and three hypotheses formulated. To give effect to this, an empirical investigation was conducted. Tourism educators who were successful in their application to mark 2014 National Senior Certificate Tourism examinations were included in the sample of this study. The result of the descriptive statistics performed on the data showed that the level of education of the respondents was the main contributing demographic that impacted on their perceptions of sustainable tourism. It is, however, of concern to note that a very low percentage of the respondents (6.2%) have received formal training in Tourism. This situation should be cause for concern for Tourism education in the Eastern Cape. Two of the three hypotheses were accepted. The researcher believes that specialised subject relevant training is required to empower educators to teach sustainable tourism in the South African secondary school classrooms in order to ensure future sustainability in the tourism industry of South Africa.
- Full Text:
- Date Issued: 2016
An exploratory study on lifestyle and its contribution to personal victimization among students at University of Fort Hare in Alice Campus
- Authors: Vaphi, Yanga Yandisa
- Date: 2016
- Subjects: Bullying Criminal behaviour
- Language: English
- Type: Thesis , Masters , M Soc Sci
- Identifier: http://hdl.handle.net/10353/2436 , vital:27840
- Description: This study is based on student lifestyle and its contribution to personal victimization at University of Fort Hare in Alice campus. Social Science researchers such as Fisher, Sloan, Cullen, and Lu (1998) claim that there are many incidents of criminal victimization occurring on and off university campuses. The main purpose of this study is to find out whether there is any correlation between student lifestyle and personal victimization. There are many theories, concepts and available information regarding the issue of personal victimization among students, however, this notion is thriving, especially in higher institutions. The study examined the research objectives through lenses of theories such as lifestyle exposure theory, routine activities theory, rational choice theory which serve to elaborate more about the research topic. In this study data was collected using interviews and self-administered questionnaires for triangulation purposes. Some of the findings in this study were that there is vast majority of students who suffer from personal victimization on and off-campus due to students’ different lifestyles and lack of legal responsibility by the institution. First year females were found to be the majority of students who suffer from personal victimization due to their vulnerability in their residences. Based on these findings, recommendations such as tightening security measures around campus, educating students regarding victimization, and collaboration of the university with police officials were made.
- Full Text:
- Date Issued: 2016
- Authors: Vaphi, Yanga Yandisa
- Date: 2016
- Subjects: Bullying Criminal behaviour
- Language: English
- Type: Thesis , Masters , M Soc Sci
- Identifier: http://hdl.handle.net/10353/2436 , vital:27840
- Description: This study is based on student lifestyle and its contribution to personal victimization at University of Fort Hare in Alice campus. Social Science researchers such as Fisher, Sloan, Cullen, and Lu (1998) claim that there are many incidents of criminal victimization occurring on and off university campuses. The main purpose of this study is to find out whether there is any correlation between student lifestyle and personal victimization. There are many theories, concepts and available information regarding the issue of personal victimization among students, however, this notion is thriving, especially in higher institutions. The study examined the research objectives through lenses of theories such as lifestyle exposure theory, routine activities theory, rational choice theory which serve to elaborate more about the research topic. In this study data was collected using interviews and self-administered questionnaires for triangulation purposes. Some of the findings in this study were that there is vast majority of students who suffer from personal victimization on and off-campus due to students’ different lifestyles and lack of legal responsibility by the institution. First year females were found to be the majority of students who suffer from personal victimization due to their vulnerability in their residences. Based on these findings, recommendations such as tightening security measures around campus, educating students regarding victimization, and collaboration of the university with police officials were made.
- Full Text:
- Date Issued: 2016
A study of the integration of technology in the school arts classroom
- Authors: Sauls, Maxwell Martin
- Date: 2016
- Subjects: Computer-assisted instruction , Educational technology , Computer managed instruction
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/7364 , vital:21342
- Description: This study explores the use of Information and Communications Technology (ICT) and Educational Technology (ET) as an educational resource in the school Arts classroom. Many teachers lack the qualifications to teach the Performing Arts (PA) of the Curriculum and Policy Statement (CAPS). Therefore, teachers rely on curriculum documentation and textbooks to help guide planning of lessons and the execution thereof. Technology as a resource tool can assist teachers as they incorporate an overwhelming amount of content/concepts in lessons. In this way they could improve classroom practice in the PA disciplines. With the emergence of Operation Phakisa: ICT in Education (Department of Education [DoE] 2015), the researcher acknowledges that the integration of ET is unavoidable. Moreover, the research highlights the importance of engaging with the rising hegemony of ICT as the defining characteristic of the information society. Literature supporting the inclusivity of media and media-related resources in education are discussed. In addition, the literature review focuses on a wide variety of ET and concludes with the implementation of ET in a South African context. Teachers from the Foundation Phase (FP), Intermediate Phase (IP) and Senior Phase (SP), namely grade R – 7, were invited to participate in the study where they were observed during contact time drawing on technology to aid teaching pedagogy. The research design involved a qualitative inquiry with aspects of crystallization where the data was collected through observations, interviews and teacher’s self-assessment. The findings suggest that teachers received little or no training in one or more PA disciplines. The integration of technology in the teaching pedagogy led to an enhanced learning environment where the teacher could actively engage learners in meaningful activities. The findings furthermore revealed that the use of technology was not uniform and did not lead to neat conclusion. Instead the researcher found that a great deal of divergence in the use of technology. This divergence was found across art disciplines and the use of technology also differed among teachers. Finally, individual teachers also differed in their use of technology across the art disciplines that they taught. The learners benefited from the use of technology insofar as they displayed a better understanding of the concepts in subsequent lessons. Furthermore, by the end of the study, teachers had begun to implement the new teaching style in learning areas other than the PA.
- Full Text:
- Date Issued: 2016
- Authors: Sauls, Maxwell Martin
- Date: 2016
- Subjects: Computer-assisted instruction , Educational technology , Computer managed instruction
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/7364 , vital:21342
- Description: This study explores the use of Information and Communications Technology (ICT) and Educational Technology (ET) as an educational resource in the school Arts classroom. Many teachers lack the qualifications to teach the Performing Arts (PA) of the Curriculum and Policy Statement (CAPS). Therefore, teachers rely on curriculum documentation and textbooks to help guide planning of lessons and the execution thereof. Technology as a resource tool can assist teachers as they incorporate an overwhelming amount of content/concepts in lessons. In this way they could improve classroom practice in the PA disciplines. With the emergence of Operation Phakisa: ICT in Education (Department of Education [DoE] 2015), the researcher acknowledges that the integration of ET is unavoidable. Moreover, the research highlights the importance of engaging with the rising hegemony of ICT as the defining characteristic of the information society. Literature supporting the inclusivity of media and media-related resources in education are discussed. In addition, the literature review focuses on a wide variety of ET and concludes with the implementation of ET in a South African context. Teachers from the Foundation Phase (FP), Intermediate Phase (IP) and Senior Phase (SP), namely grade R – 7, were invited to participate in the study where they were observed during contact time drawing on technology to aid teaching pedagogy. The research design involved a qualitative inquiry with aspects of crystallization where the data was collected through observations, interviews and teacher’s self-assessment. The findings suggest that teachers received little or no training in one or more PA disciplines. The integration of technology in the teaching pedagogy led to an enhanced learning environment where the teacher could actively engage learners in meaningful activities. The findings furthermore revealed that the use of technology was not uniform and did not lead to neat conclusion. Instead the researcher found that a great deal of divergence in the use of technology. This divergence was found across art disciplines and the use of technology also differed among teachers. Finally, individual teachers also differed in their use of technology across the art disciplines that they taught. The learners benefited from the use of technology insofar as they displayed a better understanding of the concepts in subsequent lessons. Furthermore, by the end of the study, teachers had begun to implement the new teaching style in learning areas other than the PA.
- Full Text:
- Date Issued: 2016
Using bioinformatics tools to screen for trypanosomal cathepsin B cysteine protease inhibitors from the SANCDB as a novel therapeutic modality against Human African Trypanosomiasis (HAT)
- Authors: Mokhawa, Gaone
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/3304 , vital:20470
- Description: Human African Trypanosomiasis (HAT), also known as sleeping sickness, is a fatal chronic disease that is caused by flagellated protozoans, Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense. HAT is spread by a bite from an infected tsetse fly of the Glosina genus. Up to 60 million people in 36 countries in sub-Saharan Africa are at a risk of infection from HAT with up to 30 000 deaths reported every year. Current chemotherapy for HAT is insufficient since the available drugs exhibit unacceptable side effects (toxicity) and parasite resistance. Novel treatments and approaches for development of specific and more potent drugs for HAT are therefore required. One approach is to target vital proteins that are essential to the life cycle of the parasite. The main interest of this study is to explore Trypanosoma brucei cathepsin B-like protease (TbCatB) structural and functional properties with the primary goal of discovering non peptide small molecule inhibitors of TbCatB using bioinformatics approaches. TbCatB is a papain family C1 cysteine protease which belongs to clan CA group and it has emerged as a potential HAT drug target. Papain family cysteine proteases of Clan CA group of Trypanosoma brucei (rhodesain and TbCatB) have demonstrated potential as chemotherapeutic targets using synthetic protease inhibitors like Z-Phe-Ala-CHN2 to kill the parasite in vitro and in vivo. TbCatB has been identified as the essential cysteine protease of T. brucei since mRNA silencing of TbCatB killed the parasite and resulted in a cure in mice infected with T. brucei while mRNA silencing of rhodesain only extended mice life. TbCatB is therefore a promising drug target against HAT and the discovery and development of compounds that can selectively inhibit TbCatB without posing any danger to the human host represent a great therapeutic solution for treatment of HAT. To understand protein-inhibitor interactions, useful information can be obtained from high resolution protease-inhibitor crystal structure complexes. This study aims to use bioinformatics approaches to carry out comparative sequence, structural and functional analysis of TbCatB protease and its homologs from T. congolense, T, cruzi, T. vivax and H. sapien as well as to identify non-peptide small molecule inhibitors of TbCatB cysteine proteases from natural compounds of South African origin. Sequences of TbCatB (PDB ID: 3HHI) homologs were retrieved by a BLAST search. Human cathepsin B (PDB ID: 3CBJ) was selected from a list of templates for homology modelling found by HHpred. MODELLER version 9.10 program was used to generate a hundred models for T. congolense, T, cruzi and T. vivax cathepsin B like proteases using 3HHI and 3CBJ as templates. The best models were chosen based on their low DOPE Z scores before validation using MetaMQAPII, ANOLEA, PROCHECK and QMEAN6. The DOPE Z scores and the RMSD (RMS) values of the calculated models indicate that the models are of acceptable energy (stability) and fold (conformation). Results from the different MQAPs indicate the models are of acceptable quality and they can be used for docking studies. High throughput screening of SANCDB using AutoDock Vina revealed nine compounds, SANC00 478, 479, 480, 481, 482, 488, 489, 490 and 491, having a strong affinity for Trypanosoma spp. cathepsin B proteases than HsCatB. SANC00488 has the strongest binding to Trypanosoma spp. cathepsin B proteases and the weakest binding to HsCatB protease. Molecular dynamics (MD) simulations show that the complexes between SANC00488 and TbCatB, TcCatB, TcrCatB and TvCatB are stable and do not come apart during simulation. The complex between this compound and HsCatB however is unstable and comes apart during simulation. Residues that are important for the stability of SANC00488-TbCatB complex are Gly328 of the S2 subsite, Phe208, and Ala256. In conclusion SANC00488 is a good candidate for development of a drug against HAT.
- Full Text:
- Date Issued: 2016
- Authors: Mokhawa, Gaone
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/3304 , vital:20470
- Description: Human African Trypanosomiasis (HAT), also known as sleeping sickness, is a fatal chronic disease that is caused by flagellated protozoans, Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense. HAT is spread by a bite from an infected tsetse fly of the Glosina genus. Up to 60 million people in 36 countries in sub-Saharan Africa are at a risk of infection from HAT with up to 30 000 deaths reported every year. Current chemotherapy for HAT is insufficient since the available drugs exhibit unacceptable side effects (toxicity) and parasite resistance. Novel treatments and approaches for development of specific and more potent drugs for HAT are therefore required. One approach is to target vital proteins that are essential to the life cycle of the parasite. The main interest of this study is to explore Trypanosoma brucei cathepsin B-like protease (TbCatB) structural and functional properties with the primary goal of discovering non peptide small molecule inhibitors of TbCatB using bioinformatics approaches. TbCatB is a papain family C1 cysteine protease which belongs to clan CA group and it has emerged as a potential HAT drug target. Papain family cysteine proteases of Clan CA group of Trypanosoma brucei (rhodesain and TbCatB) have demonstrated potential as chemotherapeutic targets using synthetic protease inhibitors like Z-Phe-Ala-CHN2 to kill the parasite in vitro and in vivo. TbCatB has been identified as the essential cysteine protease of T. brucei since mRNA silencing of TbCatB killed the parasite and resulted in a cure in mice infected with T. brucei while mRNA silencing of rhodesain only extended mice life. TbCatB is therefore a promising drug target against HAT and the discovery and development of compounds that can selectively inhibit TbCatB without posing any danger to the human host represent a great therapeutic solution for treatment of HAT. To understand protein-inhibitor interactions, useful information can be obtained from high resolution protease-inhibitor crystal structure complexes. This study aims to use bioinformatics approaches to carry out comparative sequence, structural and functional analysis of TbCatB protease and its homologs from T. congolense, T, cruzi, T. vivax and H. sapien as well as to identify non-peptide small molecule inhibitors of TbCatB cysteine proteases from natural compounds of South African origin. Sequences of TbCatB (PDB ID: 3HHI) homologs were retrieved by a BLAST search. Human cathepsin B (PDB ID: 3CBJ) was selected from a list of templates for homology modelling found by HHpred. MODELLER version 9.10 program was used to generate a hundred models for T. congolense, T, cruzi and T. vivax cathepsin B like proteases using 3HHI and 3CBJ as templates. The best models were chosen based on their low DOPE Z scores before validation using MetaMQAPII, ANOLEA, PROCHECK and QMEAN6. The DOPE Z scores and the RMSD (RMS) values of the calculated models indicate that the models are of acceptable energy (stability) and fold (conformation). Results from the different MQAPs indicate the models are of acceptable quality and they can be used for docking studies. High throughput screening of SANCDB using AutoDock Vina revealed nine compounds, SANC00 478, 479, 480, 481, 482, 488, 489, 490 and 491, having a strong affinity for Trypanosoma spp. cathepsin B proteases than HsCatB. SANC00488 has the strongest binding to Trypanosoma spp. cathepsin B proteases and the weakest binding to HsCatB protease. Molecular dynamics (MD) simulations show that the complexes between SANC00488 and TbCatB, TcCatB, TcrCatB and TvCatB are stable and do not come apart during simulation. The complex between this compound and HsCatB however is unstable and comes apart during simulation. Residues that are important for the stability of SANC00488-TbCatB complex are Gly328 of the S2 subsite, Phe208, and Ala256. In conclusion SANC00488 is a good candidate for development of a drug against HAT.
- Full Text:
- Date Issued: 2016
The design of an international wool exchange for Port Elizabeth
- Authors: Bothma, Ashley Andre
- Date: 2016
- Subjects: Historic sites -- South Africa -- Port Elizabeth Historic buildings -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MArch
- Identifier: http://hdl.handle.net/10948/38852 , vital:35007
- Description: Due to the growth increase in the wool industry in South Africa and the industry's lack of public activity that the existing South Africa (S.A) wool exchange exudes, the opportunity for a new type of wool exchange presents itself. the advantages in technology have evolved in many an industry and the same can be for the wool industry. the existing S.A. wool exchange fails to comfortably meet the needs of the industry with regards to technology. the creation of international wool exchange will provide a platform to boost the industry and incorporate the use of current technology to improve on the process involved within the program. BKB. Ltd have expressed a similar interest in the development of an international wool exchange but have requested the use of an abounded heritage building in an attempt at a sustainable future through re-use.
- Full Text:
- Date Issued: 2016
- Authors: Bothma, Ashley Andre
- Date: 2016
- Subjects: Historic sites -- South Africa -- Port Elizabeth Historic buildings -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MArch
- Identifier: http://hdl.handle.net/10948/38852 , vital:35007
- Description: Due to the growth increase in the wool industry in South Africa and the industry's lack of public activity that the existing South Africa (S.A) wool exchange exudes, the opportunity for a new type of wool exchange presents itself. the advantages in technology have evolved in many an industry and the same can be for the wool industry. the existing S.A. wool exchange fails to comfortably meet the needs of the industry with regards to technology. the creation of international wool exchange will provide a platform to boost the industry and incorporate the use of current technology to improve on the process involved within the program. BKB. Ltd have expressed a similar interest in the development of an international wool exchange but have requested the use of an abounded heritage building in an attempt at a sustainable future through re-use.
- Full Text:
- Date Issued: 2016
Istraight Lendaba
- Authors: Motsei, Mmatshilo T N
- Date: 2016
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:6015 , http://hdl.handle.net/10962/d1021235
- Description: My collection of stories describes the lives of ordinary black people living in post‐apartheid South Africa, especially those living in the margins, and the compromises that poverty forces them to make. In such a world, virtue and vice are flip sides of the same coin. My stories search for hope in an environment which Ayi Kwei Armah describes as “so completely seized with danger and so many different kinds of loss.” My writing is inspired by Mozambican writer Luis Bernardo Honwana, South African writer Joel Matlou whose demotic stories gave voice to everyday life in the townships, and Cameroonian writer Werewere Liking’s as well as Brenda Fassie’s powerful representation of the subversive nature of African women.
- Full Text:
- Date Issued: 2016
- Authors: Motsei, Mmatshilo T N
- Date: 2016
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:6015 , http://hdl.handle.net/10962/d1021235
- Description: My collection of stories describes the lives of ordinary black people living in post‐apartheid South Africa, especially those living in the margins, and the compromises that poverty forces them to make. In such a world, virtue and vice are flip sides of the same coin. My stories search for hope in an environment which Ayi Kwei Armah describes as “so completely seized with danger and so many different kinds of loss.” My writing is inspired by Mozambican writer Luis Bernardo Honwana, South African writer Joel Matlou whose demotic stories gave voice to everyday life in the townships, and Cameroonian writer Werewere Liking’s as well as Brenda Fassie’s powerful representation of the subversive nature of African women.
- Full Text:
- Date Issued: 2016
Gqhirha mixing traditional beer
- Unamed
- Authors: Unamed
- Date: 2016
- Subjects: UNCATALOGUED
- Type: Image
- Identifier: http://hdl.handle.net/10962/219790 , vital:48557 , KHP-187
- Description: Traditional Healer mixing traditional beer , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/) (NEVER CAHNGE THIS FIELD)
- Full Text: false
- Date Issued: 2016
- Authors: Unamed
- Date: 2016
- Subjects: UNCATALOGUED
- Type: Image
- Identifier: http://hdl.handle.net/10962/219790 , vital:48557 , KHP-187
- Description: Traditional Healer mixing traditional beer , Use of this resource is governed by the terms and conditions of the Creative Commons "Attribution-NonCommercial-ShareAlike" License (http://creativecommons.org/licenses/by-nc-sa/2.0/) (NEVER CAHNGE THIS FIELD)
- Full Text: false
- Date Issued: 2016
The relationship between household debt and consumption spending in South Africa (1994 - 2013)
- Authors: Nkala, Patience
- Date: 2016
- Subjects: Finance, Personal Financial services industry Consumption (Economics)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/14022 , vital:39798
- Description: Consumption has been and remains the main contributor to gross domestic product (GDP) growth in South Africa. Household debt on the other side has remained high over the years. This study examined the relationship between household debt and consumption spending, for the period between 1994 and 2013. The Johansen cointegration technique and the Vector error correction model (VECM) were utilised to test the long run and short run relationships between the variables. The Granger causality test was also employed to test the direction of causality between the variables. Results from this study have revealed that a relationship exists between household debt and consumption spending in South Africa and they have also showed that this relationship flows from household debt to consumption spending. The implications of these results are that consumption spending may be increased through other measures rather than through increasing debt. The study therefore recommends that policy makers avail more investment opportunities for households and to also create employment in a bid to increase the income of households which can then be used to increase household consumption rather than the use of debt.
- Full Text:
- Date Issued: 2016
- Authors: Nkala, Patience
- Date: 2016
- Subjects: Finance, Personal Financial services industry Consumption (Economics)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/14022 , vital:39798
- Description: Consumption has been and remains the main contributor to gross domestic product (GDP) growth in South Africa. Household debt on the other side has remained high over the years. This study examined the relationship between household debt and consumption spending, for the period between 1994 and 2013. The Johansen cointegration technique and the Vector error correction model (VECM) were utilised to test the long run and short run relationships between the variables. The Granger causality test was also employed to test the direction of causality between the variables. Results from this study have revealed that a relationship exists between household debt and consumption spending in South Africa and they have also showed that this relationship flows from household debt to consumption spending. The implications of these results are that consumption spending may be increased through other measures rather than through increasing debt. The study therefore recommends that policy makers avail more investment opportunities for households and to also create employment in a bid to increase the income of households which can then be used to increase household consumption rather than the use of debt.
- Full Text:
- Date Issued: 2016
SASO and Black Consciousness, and the shift to congress politics
- Authors: Badat, Saleem
- Date: 2016
- Language: English
- Type: book chapter , text
- Identifier: http://hdl.handle.net/10962/59755 , vital:27645 , http://witspress.co.za/catalogue/students-must-rise/
- Description: Students Must Rise 98 Chapter 8 SASO and Black Consciousness, and the shift to congress politics I n 1960, demonstrators protesting against pass laws were killed and injured by police at Sharpeville. Soon afterwards, the apartheid government declared a state of emergency. Over 11 000 political activists were detained, and repressive new laws, police raids, arrests, bannings, and torture were used to crush political opposition to apartheid. The African National Congress (ANC) and Pan Africanist Congress (PAC) were banned, and many leaders of the ANC and PAC were arrested and imprisoned , and hundreds fled into exile. For many white South Africans, the rest of the 1960s were a time of economic boom, political calm, prosperity, and rising living standards. Some blacks took the opportunity to accumulate wealth, power, and privilege through the Bantustans that the apartheid government established as part of its separate development programme. For most blacks, it was a period of great economic exploitation, extensive political and social control, fear, and demoralisation. It was difficult to see how there could be any political challenge to white minority rule. Anti-apartheid organisations faced immediate repression. They also had to overcome black people’s fear and demoralisation, which stood in the way of mobilising opposition against apartheid. The emergence of the South African Students’ Organisation and Black Consciousness Despite many problems, the South African Students’ Organisation (SASO) was formed as an exclusively black university and college student organisation in 1968. It escaped immediate state repression, and developed a following among students at the Saleem Badat SASO and Black Consciousness, and the shift to congress politics 99 universities reserved for blacks. Thereafter, the ideology of Black Consciousness (BC) was developed and other BC organisations were formed, resulting in the BC movement. SASO saw its challenge as the ‘assertion, manifestation and development of a sense of awareness politically, socially and economically among the black community’.1 It emphasised black ‘group cohesion and solidarity’ as ‘important facets of Black Consciousness’, the need for ‘the totality of involvement of the oppressed people’, and for BC ‘to be spread to reach all sections of the black community’.2 SASO began community development, literacy, education, media, culture, and sports projects, which aimed to help black communities to determine and realise their own needs. They were seen as a means to win the trust of people and to educate and mobilise them.3 Projects instilled the idea of self-reliance, seen as important for achieving freedom, in members and communities. SASO created a favourable political climate for various organisations to emerge.
- Full Text: false
- Date Issued: 2016
- Authors: Badat, Saleem
- Date: 2016
- Language: English
- Type: book chapter , text
- Identifier: http://hdl.handle.net/10962/59755 , vital:27645 , http://witspress.co.za/catalogue/students-must-rise/
- Description: Students Must Rise 98 Chapter 8 SASO and Black Consciousness, and the shift to congress politics I n 1960, demonstrators protesting against pass laws were killed and injured by police at Sharpeville. Soon afterwards, the apartheid government declared a state of emergency. Over 11 000 political activists were detained, and repressive new laws, police raids, arrests, bannings, and torture were used to crush political opposition to apartheid. The African National Congress (ANC) and Pan Africanist Congress (PAC) were banned, and many leaders of the ANC and PAC were arrested and imprisoned , and hundreds fled into exile. For many white South Africans, the rest of the 1960s were a time of economic boom, political calm, prosperity, and rising living standards. Some blacks took the opportunity to accumulate wealth, power, and privilege through the Bantustans that the apartheid government established as part of its separate development programme. For most blacks, it was a period of great economic exploitation, extensive political and social control, fear, and demoralisation. It was difficult to see how there could be any political challenge to white minority rule. Anti-apartheid organisations faced immediate repression. They also had to overcome black people’s fear and demoralisation, which stood in the way of mobilising opposition against apartheid. The emergence of the South African Students’ Organisation and Black Consciousness Despite many problems, the South African Students’ Organisation (SASO) was formed as an exclusively black university and college student organisation in 1968. It escaped immediate state repression, and developed a following among students at the Saleem Badat SASO and Black Consciousness, and the shift to congress politics 99 universities reserved for blacks. Thereafter, the ideology of Black Consciousness (BC) was developed and other BC organisations were formed, resulting in the BC movement. SASO saw its challenge as the ‘assertion, manifestation and development of a sense of awareness politically, socially and economically among the black community’.1 It emphasised black ‘group cohesion and solidarity’ as ‘important facets of Black Consciousness’, the need for ‘the totality of involvement of the oppressed people’, and for BC ‘to be spread to reach all sections of the black community’.2 SASO began community development, literacy, education, media, culture, and sports projects, which aimed to help black communities to determine and realise their own needs. They were seen as a means to win the trust of people and to educate and mobilise them.3 Projects instilled the idea of self-reliance, seen as important for achieving freedom, in members and communities. SASO created a favourable political climate for various organisations to emerge.
- Full Text: false
- Date Issued: 2016
Leisure time and holiday aspirations of black upper middle class in East London
- Authors: Ngozwana, Baselwa
- Date: 2016
- Subjects: Social classes -- South Africa -- Eastern Cape Lifestyles -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/6380 , vital:29600
- Description: This study examined the holiday and leisure aspirations of the new upper black middle class in East London using qualitative approach. The study investigated aspirations of the black middle class on international travels through the lens of Veblen’s (2002) conspicuous consumption theory which entails that black middle class citizens spend in order to assert their status and belongingness to the middle class. The aim of the study was to understand their holiday and leisure aspirations, what the idea is behind or what motivates their international travels, their travel experiences and class affirmations. This exploration included the challenges and frustrations such as Ebola scare, racism, issues with foreign exchange and variations from these international visits. Data was collected through interviews with upper black middle class who are based in the Buffalo City Metro Municipality in East London, Eastern Cape. Findings from this study revealed that consumption patterns of the emerging black middle class to diverge substantially from the other groups, in terms of greater signalling of social status via visible consumption and preoccupation with reducing an historical asset deficit. Various themes emerged as meanings attached to international travelling and leisure by those black middle class international travellers. These are sense of wealth, status, religion, self-esteem, sense of reward, bonding with friends and conspicuous/visible consumption.
- Full Text:
- Date Issued: 2016
- Authors: Ngozwana, Baselwa
- Date: 2016
- Subjects: Social classes -- South Africa -- Eastern Cape Lifestyles -- South Africa
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/6380 , vital:29600
- Description: This study examined the holiday and leisure aspirations of the new upper black middle class in East London using qualitative approach. The study investigated aspirations of the black middle class on international travels through the lens of Veblen’s (2002) conspicuous consumption theory which entails that black middle class citizens spend in order to assert their status and belongingness to the middle class. The aim of the study was to understand their holiday and leisure aspirations, what the idea is behind or what motivates their international travels, their travel experiences and class affirmations. This exploration included the challenges and frustrations such as Ebola scare, racism, issues with foreign exchange and variations from these international visits. Data was collected through interviews with upper black middle class who are based in the Buffalo City Metro Municipality in East London, Eastern Cape. Findings from this study revealed that consumption patterns of the emerging black middle class to diverge substantially from the other groups, in terms of greater signalling of social status via visible consumption and preoccupation with reducing an historical asset deficit. Various themes emerged as meanings attached to international travelling and leisure by those black middle class international travellers. These are sense of wealth, status, religion, self-esteem, sense of reward, bonding with friends and conspicuous/visible consumption.
- Full Text:
- Date Issued: 2016