Correlation and comparative analysis of traffic across five network telescopes
- Nkhumeleni, Thizwilondi Moses
- Authors: Nkhumeleni, Thizwilondi Moses
- Date: 2014
- Subjects: Sensor networks , Computer networks , TCP/IP (Computer network protocol) , Computer networks -- Management , Electronic data processing -- Management
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4693 , http://hdl.handle.net/10962/d1011668 , Sensor networks , Computer networks , TCP/IP (Computer network protocol) , Computer networks -- Management , Electronic data processing -- Management
- Description: Monitoring unused IP address space by using network telescopes provides a favourable environment for researchers to study and detect malware, worms, denial of service and scanning activities. Research in the field of network telescopes has progressed over the past decade resulting in the development of an increased number of overlapping datasets. Rhodes University's network of telescope sensors has continued to grow with additional network telescopes being brought online. At the time of writing, Rhodes University has a distributed network of five relatively small /24 network telescopes. With five network telescope sensors, this research focuses on comparative and correlation analysis of traffic activity across the network of telescope sensors. To aid summarisation and visualisation techniques, time series' representing time-based traffic activity, are constructed. By employing an iterative experimental process of captured traffic, two natural categories of the five network telescopes are presented. Using the cross- and auto-correlation methods of time series analysis, moderate correlation of traffic activity was achieved between telescope sensors in each category. Weak to moderate correlation was calculated when comparing category A and category B network telescopes' datasets. Results were significantly improved by studying TCP traffic separately. Moderate to strong correlation coefficients in each category were calculated when using TCP traffic only. UDP traffic analysis showed weaker correlation between sensors, however the uniformity of ICMP traffic showed correlation of traffic activity across all sensors. The results confirmed the visual observation of traffic relativity in telescope sensors within the same category and quantitatively analysed the correlation of network telescopes' traffic activity.
- Full Text:
- Date Issued: 2014
- Authors: Nkhumeleni, Thizwilondi Moses
- Date: 2014
- Subjects: Sensor networks , Computer networks , TCP/IP (Computer network protocol) , Computer networks -- Management , Electronic data processing -- Management
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4693 , http://hdl.handle.net/10962/d1011668 , Sensor networks , Computer networks , TCP/IP (Computer network protocol) , Computer networks -- Management , Electronic data processing -- Management
- Description: Monitoring unused IP address space by using network telescopes provides a favourable environment for researchers to study and detect malware, worms, denial of service and scanning activities. Research in the field of network telescopes has progressed over the past decade resulting in the development of an increased number of overlapping datasets. Rhodes University's network of telescope sensors has continued to grow with additional network telescopes being brought online. At the time of writing, Rhodes University has a distributed network of five relatively small /24 network telescopes. With five network telescope sensors, this research focuses on comparative and correlation analysis of traffic activity across the network of telescope sensors. To aid summarisation and visualisation techniques, time series' representing time-based traffic activity, are constructed. By employing an iterative experimental process of captured traffic, two natural categories of the five network telescopes are presented. Using the cross- and auto-correlation methods of time series analysis, moderate correlation of traffic activity was achieved between telescope sensors in each category. Weak to moderate correlation was calculated when comparing category A and category B network telescopes' datasets. Results were significantly improved by studying TCP traffic separately. Moderate to strong correlation coefficients in each category were calculated when using TCP traffic only. UDP traffic analysis showed weaker correlation between sensors, however the uniformity of ICMP traffic showed correlation of traffic activity across all sensors. The results confirmed the visual observation of traffic relativity in telescope sensors within the same category and quantitatively analysed the correlation of network telescopes' traffic activity.
- Full Text:
- Date Issued: 2014
Cost comparison between repackaging bulk oral solid medicines and purchasing manufacturer-prepared patient-ready packs in the public sector in South Africa
- Authors: Abahamye, Aloysius
- Date: 2014
- Subjects: Packaging -- Cost control , Business logistics -- Costs , Drugs -- Packaging , Manufacturing processes
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: vital:10163 , http://hdl.handle.net/10948/d1020596 , Drugs -- Packaging
- Description: In an attempt to have medicines available in patient-ready packs (PRPs) prior to the dispensing process, the provincial medicine depots in South Africa have, for many years, been repackaging bulk medicines into PRPs. Notwithstanding the fact that bulk medicine packages may have been the only packages available from the manufacturers to service the Primary Health Care (PHC) sector, the main aim of this process was to ensure that medicines were available in PRPs for dispensing to patients, thus, minimising the time spent on each prescription by the pharmacist, pharmacist’s assistant or Nurse. Currently, some medicines are being procured in PRPs from the manufacturers, whereas others are still procured in bulk packs which must be repackaged into PRPs. After a thorough literature search, it was established that, up until this point in time, no studies have been performed to compare costs of repackaged medicines from bulk packs with costs of medicines procured from manufacturers in PRPs. There was very scanty literature comparing the use of medicines procured either in PRPs or bulk packs. However, literature on cost comparison between repackaging and purchasing of commercially available manufacturer-prepared PRPs was not identified.
- Full Text:
- Date Issued: 2014
- Authors: Abahamye, Aloysius
- Date: 2014
- Subjects: Packaging -- Cost control , Business logistics -- Costs , Drugs -- Packaging , Manufacturing processes
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: vital:10163 , http://hdl.handle.net/10948/d1020596 , Drugs -- Packaging
- Description: In an attempt to have medicines available in patient-ready packs (PRPs) prior to the dispensing process, the provincial medicine depots in South Africa have, for many years, been repackaging bulk medicines into PRPs. Notwithstanding the fact that bulk medicine packages may have been the only packages available from the manufacturers to service the Primary Health Care (PHC) sector, the main aim of this process was to ensure that medicines were available in PRPs for dispensing to patients, thus, minimising the time spent on each prescription by the pharmacist, pharmacist’s assistant or Nurse. Currently, some medicines are being procured in PRPs from the manufacturers, whereas others are still procured in bulk packs which must be repackaged into PRPs. After a thorough literature search, it was established that, up until this point in time, no studies have been performed to compare costs of repackaged medicines from bulk packs with costs of medicines procured from manufacturers in PRPs. There was very scanty literature comparing the use of medicines procured either in PRPs or bulk packs. However, literature on cost comparison between repackaging and purchasing of commercially available manufacturer-prepared PRPs was not identified.
- Full Text:
- Date Issued: 2014
Critical evaluation of medical waste management policies, processes and practices in selected rural hospitals in the Eastern Cape
- Authors: Maseko, Qondile
- Date: 2014
- Subjects: Hazardous wastes -- Management -- South Africa , Radioactive waste disposal -- South Africa , Medical wastes -- Management -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3373 , http://hdl.handle.net/10962/d1013107
- Description: This thesis critically evaluates the policies, processes and practices of medical waste management in selected rural hospitals in the Eastern Cape. Medical Waste Management is a growing public health and environmental issue worldwide. Research shows large scale incapacity in dealing with medical waste in an efficient and sustainable fashion globally, which demonstrates that it is not merely a developing world problem alone. This study is conducted against the backdrop of an increasing medical waste crisis in South Africa. Although there are an abundance of studies on solid waste management, there is a lack of data and research particularly on medical waste management in rural hospitals. The crisis of medical waste management in South Africa is closely intertwined with the collapsing health care system and an overburdened natural environment. It is an undisputable fact that South Africa’s generation of medical waste far exceeds its capacity to handle it effectively. This thesis argues that the neglect of medical waste as an environmental-health issue and the absence of an integrated national medical waste management plan aggravate the medical waste problem in the country. In explaining the medical waste crisis, this thesis adopts a Marxist perspective which is based on the premise that industrial capitalist societies place economic growth and production at high priority at the expense of the natural environment; creating a society that is engulfed by high health risk due to the generation of hazardous and toxic waste. Industrial societies view themselves as superior and separate from the natural environment, whereas one cannot separate nature from society as they are interlinked. As society attempts to adopt a sustainable environmental approach towards environmental management, science and technology are enforced as a solution to environmental problems in order to continue developing countries’ economies whilst sustainably managing and protecting the environment, which is contradictory. This thesis emphasises that medical waste management is a socio-political problem as much as it is an environmental problem, hence the need to focus on power relations and issues of environmental and social justice. The results of the study identified gaps in policy framework nationally and institutionally on medical waste management. In addition, there were poor waste management practices due to poor training, inadequate infrastructure and resources as well as poor budget support.
- Full Text:
- Date Issued: 2014
- Authors: Maseko, Qondile
- Date: 2014
- Subjects: Hazardous wastes -- Management -- South Africa , Radioactive waste disposal -- South Africa , Medical wastes -- Management -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3373 , http://hdl.handle.net/10962/d1013107
- Description: This thesis critically evaluates the policies, processes and practices of medical waste management in selected rural hospitals in the Eastern Cape. Medical Waste Management is a growing public health and environmental issue worldwide. Research shows large scale incapacity in dealing with medical waste in an efficient and sustainable fashion globally, which demonstrates that it is not merely a developing world problem alone. This study is conducted against the backdrop of an increasing medical waste crisis in South Africa. Although there are an abundance of studies on solid waste management, there is a lack of data and research particularly on medical waste management in rural hospitals. The crisis of medical waste management in South Africa is closely intertwined with the collapsing health care system and an overburdened natural environment. It is an undisputable fact that South Africa’s generation of medical waste far exceeds its capacity to handle it effectively. This thesis argues that the neglect of medical waste as an environmental-health issue and the absence of an integrated national medical waste management plan aggravate the medical waste problem in the country. In explaining the medical waste crisis, this thesis adopts a Marxist perspective which is based on the premise that industrial capitalist societies place economic growth and production at high priority at the expense of the natural environment; creating a society that is engulfed by high health risk due to the generation of hazardous and toxic waste. Industrial societies view themselves as superior and separate from the natural environment, whereas one cannot separate nature from society as they are interlinked. As society attempts to adopt a sustainable environmental approach towards environmental management, science and technology are enforced as a solution to environmental problems in order to continue developing countries’ economies whilst sustainably managing and protecting the environment, which is contradictory. This thesis emphasises that medical waste management is a socio-political problem as much as it is an environmental problem, hence the need to focus on power relations and issues of environmental and social justice. The results of the study identified gaps in policy framework nationally and institutionally on medical waste management. In addition, there were poor waste management practices due to poor training, inadequate infrastructure and resources as well as poor budget support.
- Full Text:
- Date Issued: 2014
Critical success factors in implementing an IT project plan within a South African automotive assembly firm
- Authors: Meyer, Harold
- Date: 2014
- Subjects: Project management , Information technology projects , Management information systems
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/9173 , vital:26471
- Description: Research shows that information technology (IT) projects have a poor success rate. Many IT projects exceed the allocated budget, take longer than the time allocated or do not meet the project requirements. The purpose of this study is to identify the critical success factors for implementing an IT project plan in automotive assembly firms in South Africa. The factors identified during the study cover the following topics: the project manager as a factor of success; project communication; knowledge management; the role of management; business strategy; project success measurements; and training and development. For the empirical study an online questionnaire was used as a data collection tool. The study consisted of 40 participants who are involved in the implementation of IT projects in automotive assembly firms with a minimum of 1 year experience. The questionnaire requested the biographical information of the participants and then asked the participants about their perception of the current project activity as well as their perceived importance of the project activities mentioned. The participants’ responses were structured according to a Likert-type scale. Participants had to indicate the extent to which they agreed with each statement in the questionnaire. The responses obtained from the survey were presented and analysed. The researcher observed in this study that aspects of the critical success factors were in place however there were areas which showed large variances. The researcher recommends that management of automotive assembly firms in South Africa should look into project communication and knowledge management. These factors showed large variances with regards to the current project activities and the perceived importance of the activities.
- Full Text:
- Date Issued: 2014
- Authors: Meyer, Harold
- Date: 2014
- Subjects: Project management , Information technology projects , Management information systems
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/9173 , vital:26471
- Description: Research shows that information technology (IT) projects have a poor success rate. Many IT projects exceed the allocated budget, take longer than the time allocated or do not meet the project requirements. The purpose of this study is to identify the critical success factors for implementing an IT project plan in automotive assembly firms in South Africa. The factors identified during the study cover the following topics: the project manager as a factor of success; project communication; knowledge management; the role of management; business strategy; project success measurements; and training and development. For the empirical study an online questionnaire was used as a data collection tool. The study consisted of 40 participants who are involved in the implementation of IT projects in automotive assembly firms with a minimum of 1 year experience. The questionnaire requested the biographical information of the participants and then asked the participants about their perception of the current project activity as well as their perceived importance of the project activities mentioned. The participants’ responses were structured according to a Likert-type scale. Participants had to indicate the extent to which they agreed with each statement in the questionnaire. The responses obtained from the survey were presented and analysed. The researcher observed in this study that aspects of the critical success factors were in place however there were areas which showed large variances. The researcher recommends that management of automotive assembly firms in South Africa should look into project communication and knowledge management. These factors showed large variances with regards to the current project activities and the perceived importance of the activities.
- Full Text:
- Date Issued: 2014
Crumpled hearts
- Authors: Crain, Patricia Ann
- Date: 2014
- Subjects: South African fiction (English) -- 21st century , Creative writing (Higher education) , English language -- Writing , South African fiction (English) -- Study and teaching (Higher)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5984 , http://hdl.handle.net/10962/d1015676
- Description: A middle-aged woman, living in Johannesburg, has an experience which catapults her into changing her life. In the process of confronting her alcoholism, she realizes how patterns of addiction extend to other areas of her life and tries to make sense of the tragic events that have occurred. Her world becomes a different place as she questions everything that she has been taught about relationships, religion, race and her place in society. In the search for answers she uncovers stories about the lives of her parents, grandparents, relatives, friends and acquaintances. Embarking on a journey of discovery and rediscovery through her experiences and those of others, she explores the ways in which the things that she thought she knew defined her behaviour and expression of herself.
- Full Text:
- Date Issued: 2014
- Authors: Crain, Patricia Ann
- Date: 2014
- Subjects: South African fiction (English) -- 21st century , Creative writing (Higher education) , English language -- Writing , South African fiction (English) -- Study and teaching (Higher)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5984 , http://hdl.handle.net/10962/d1015676
- Description: A middle-aged woman, living in Johannesburg, has an experience which catapults her into changing her life. In the process of confronting her alcoholism, she realizes how patterns of addiction extend to other areas of her life and tries to make sense of the tragic events that have occurred. Her world becomes a different place as she questions everything that she has been taught about relationships, religion, race and her place in society. In the search for answers she uncovers stories about the lives of her parents, grandparents, relatives, friends and acquaintances. Embarking on a journey of discovery and rediscovery through her experiences and those of others, she explores the ways in which the things that she thought she knew defined her behaviour and expression of herself.
- Full Text:
- Date Issued: 2014
Customer satisfaction of two market segments in Nelson Mandela Bay: a retail perspective
- Authors: Gwavu, Nontle
- Date: 2014
- Subjects: Consumer satisfaction -- South Africa -- Port Elizabeth , Retail trade -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/7825 , vital:24308
- Description: Retail industry in South Africa is witnessing fast growth in all cities in South Africa. Attracting customers become key to success in the increased industry competition. Keeping customers satisfied has never been more important than currently. Retailers need to know what customer needs and wants are, to be able to provide and constantly satisfy their needs. Growth in the industry is largely influenced by economic conditions. A stable economic environment allows customers to spend more, thereby increasing the value of retail trade sales. In South Africa, there is strong competition between the four major dominant firms in the retail industry, which include Pick n Pay Holdings Limited (30%), Shoprite Holdings Limited (34%), Spar Holdings Limited (24%), and Woolworths Holdings Limited (11%). For the firms to grow in South Africa, they must have a clear understanding of consumers’ needs and wants. Services rendered by retailers are of utmost importance to their level of success and ability to successfully cater for the market’s needs. The main purpose of this study is to investigate customer satisfaction of two retail stores in the Nelson Mandela Bay, namely Summerstrand and Cleary Park Pick n Pay stores. Three independent variables (employee empowerment, technology and customer relations) were identified and were tested against one dependent variable (customer satisfaction). A positivistic paradigm was used to conduct the research. The approach uses the quantitative method of research to establish the causal relationships. A null (Ho) and alternative (Ha) hypotheses were formulated in order to test relationships between variables. A five-point Likert scale enabled primary data to be sourced for 294 customers’ (respondents), who shared their customer satisfaction experience at Pick n Pay stores in the Nelson Mandela Bay. A statistical analysis of quantitative data compromised of three phases. Firstly, the data was subjected to a descriptive analysis to summarise the data. Secondly, reliability (internal consistency) for the research instrument was assessed by means of the Cronbach Alpha Reliability Coefficient. Finally, multiple linear regression analysis were used to test the hypothesis. The empirical findings show that the independent variable positively correlated with the dependent variables. This implies that a positive relationship between employee empowerment, technology, customer relations and customer satisfaction at Pick n Pay stores. Therefore, recommendations given by the researcher focused on all variables that have a relationship with customer satisfaction.
- Full Text:
- Date Issued: 2014
- Authors: Gwavu, Nontle
- Date: 2014
- Subjects: Consumer satisfaction -- South Africa -- Port Elizabeth , Retail trade -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/7825 , vital:24308
- Description: Retail industry in South Africa is witnessing fast growth in all cities in South Africa. Attracting customers become key to success in the increased industry competition. Keeping customers satisfied has never been more important than currently. Retailers need to know what customer needs and wants are, to be able to provide and constantly satisfy their needs. Growth in the industry is largely influenced by economic conditions. A stable economic environment allows customers to spend more, thereby increasing the value of retail trade sales. In South Africa, there is strong competition between the four major dominant firms in the retail industry, which include Pick n Pay Holdings Limited (30%), Shoprite Holdings Limited (34%), Spar Holdings Limited (24%), and Woolworths Holdings Limited (11%). For the firms to grow in South Africa, they must have a clear understanding of consumers’ needs and wants. Services rendered by retailers are of utmost importance to their level of success and ability to successfully cater for the market’s needs. The main purpose of this study is to investigate customer satisfaction of two retail stores in the Nelson Mandela Bay, namely Summerstrand and Cleary Park Pick n Pay stores. Three independent variables (employee empowerment, technology and customer relations) were identified and were tested against one dependent variable (customer satisfaction). A positivistic paradigm was used to conduct the research. The approach uses the quantitative method of research to establish the causal relationships. A null (Ho) and alternative (Ha) hypotheses were formulated in order to test relationships between variables. A five-point Likert scale enabled primary data to be sourced for 294 customers’ (respondents), who shared their customer satisfaction experience at Pick n Pay stores in the Nelson Mandela Bay. A statistical analysis of quantitative data compromised of three phases. Firstly, the data was subjected to a descriptive analysis to summarise the data. Secondly, reliability (internal consistency) for the research instrument was assessed by means of the Cronbach Alpha Reliability Coefficient. Finally, multiple linear regression analysis were used to test the hypothesis. The empirical findings show that the independent variable positively correlated with the dependent variables. This implies that a positive relationship between employee empowerment, technology, customer relations and customer satisfaction at Pick n Pay stores. Therefore, recommendations given by the researcher focused on all variables that have a relationship with customer satisfaction.
- Full Text:
- Date Issued: 2014
Dangerous people and places : a community newspaper's constructions of crime
- Authors: Raymond, Leigh Alice
- Date: 2014
- Subjects: Grocott's Mail (Grahamstown, South Africa) , Community newspapers -- South Africa -- Grahamstown , Crime and the press -- South Africa -- Grahamstown , Newspapers -- Objectivity , Mass media policy -- South Africa -- Grahamstown , Social responsibility of business -- South Africa -- Grahamstown , Police and the press -- South Africa -- Grahamstown
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:3527 , http://hdl.handle.net/10962/d1013091
- Description: This thesis argues that there is a clear imbalance in the representation of crime in the newspaper, Grocott’s Mail, in Grahamstown, in the Eastern Cape of South Africa. The thesis concludes that the system of marginalisation and segregation which was established during the apartheid era is the foundation for the continued segregation and marginalisation of certain groups of people in Grahamstown as depicted in crime journalism. Previous research shows that not only people, but spaces are marginalised through media representations of crime. As people are represented as dangerous, so too the spaces they occupy become dangerous spaces. Importantly, the research shows that discourses of marginalisation are present in newspaper reports reproducing the discourses prominent in society, and in turn, the newspaper itself perpetuates these marginalising discourses. This extends into the coverage that different crimes receive in newspapers. For instance, the reports show that a middle-class audience will be more concerned with property crime in middle-class neighbourhoods, than other crimes in lower-class neighbourhoods. I argue that not only the type of crime, but the severity, the effect, and the necessity for justice represented by the newspaper, are all largely determined by the region of the crime. Further, I show that the criminal is not only demonised and represented as individually deviant in the reports in the newspaper, but that these representations are made by this newspaper because they are deeply imbedded as a discourse in society. This is partly because this newspaper has taken on a monitorial role, requiring neutral reporting from journalists, and a dedication to surveying the processes of state institutions, like the police and courts. As a result, the ways in which crime is reported on in the newspaper is fairly well fixed, making it difficult for journalists to conceive of different ways of reporting crime. The representations of the criminal justice system that the monitorial media, this newspaper included present, are a careful balance between the interest of the public, and the need to preserve relationships with sources. The monitorial media in general, and this newspaper in particular, represent the criminal justice system. The relationship between the police and the newspaper, and the courts and the media, therefore strongly influences the way in which crime news is reported. In particular, crime news is represented from the perspective of the criminal justice system. This research was carried out using Critical Discourse Analysis, qualitative interviews, and focus group interviews.
- Full Text:
- Date Issued: 2014
- Authors: Raymond, Leigh Alice
- Date: 2014
- Subjects: Grocott's Mail (Grahamstown, South Africa) , Community newspapers -- South Africa -- Grahamstown , Crime and the press -- South Africa -- Grahamstown , Newspapers -- Objectivity , Mass media policy -- South Africa -- Grahamstown , Social responsibility of business -- South Africa -- Grahamstown , Police and the press -- South Africa -- Grahamstown
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:3527 , http://hdl.handle.net/10962/d1013091
- Description: This thesis argues that there is a clear imbalance in the representation of crime in the newspaper, Grocott’s Mail, in Grahamstown, in the Eastern Cape of South Africa. The thesis concludes that the system of marginalisation and segregation which was established during the apartheid era is the foundation for the continued segregation and marginalisation of certain groups of people in Grahamstown as depicted in crime journalism. Previous research shows that not only people, but spaces are marginalised through media representations of crime. As people are represented as dangerous, so too the spaces they occupy become dangerous spaces. Importantly, the research shows that discourses of marginalisation are present in newspaper reports reproducing the discourses prominent in society, and in turn, the newspaper itself perpetuates these marginalising discourses. This extends into the coverage that different crimes receive in newspapers. For instance, the reports show that a middle-class audience will be more concerned with property crime in middle-class neighbourhoods, than other crimes in lower-class neighbourhoods. I argue that not only the type of crime, but the severity, the effect, and the necessity for justice represented by the newspaper, are all largely determined by the region of the crime. Further, I show that the criminal is not only demonised and represented as individually deviant in the reports in the newspaper, but that these representations are made by this newspaper because they are deeply imbedded as a discourse in society. This is partly because this newspaper has taken on a monitorial role, requiring neutral reporting from journalists, and a dedication to surveying the processes of state institutions, like the police and courts. As a result, the ways in which crime is reported on in the newspaper is fairly well fixed, making it difficult for journalists to conceive of different ways of reporting crime. The representations of the criminal justice system that the monitorial media, this newspaper included present, are a careful balance between the interest of the public, and the need to preserve relationships with sources. The monitorial media in general, and this newspaper in particular, represent the criminal justice system. The relationship between the police and the newspaper, and the courts and the media, therefore strongly influences the way in which crime news is reported. In particular, crime news is represented from the perspective of the criminal justice system. This research was carried out using Critical Discourse Analysis, qualitative interviews, and focus group interviews.
- Full Text:
- Date Issued: 2014
Data-centric security : towards a utopian model for protecting corporate data on mobile devices
- Authors: Mayisela, Simphiwe Hector
- Date: 2014
- Subjects: Computer security , Computer networks -- Security measures , Business enterprises -- Computer networks -- Security measures , Mobile computing -- Security measures , Mobile communication systems -- Security measures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4688 , http://hdl.handle.net/10962/d1011094 , Computer security , Computer networks -- Security measures , Business enterprises -- Computer networks -- Security measures , Mobile computing -- Security measures , Mobile communication systems -- Security measures
- Description: Data-centric security is significant in understanding, assessing and mitigating the various risks and impacts of sharing information outside corporate boundaries. Information generally leaves corporate boundaries through mobile devices. Mobile devices continue to evolve as multi-functional tools for everyday life, surpassing their initial intended use. This added capability and increasingly extensive use of mobile devices does not come without a degree of risk - hence the need to guard and protect information as it exists beyond the corporate boundaries and throughout its lifecycle. Literature on existing models crafted to protect data, rather than infrastructure in which the data resides, is reviewed. Technologies that organisations have implemented to adopt the data-centric model are studied. A utopian model that takes into account the shortcomings of existing technologies and deficiencies of common theories is proposed. Two sets of qualitative studies are reported; the first is a preliminary online survey to assess the ubiquity of mobile devices and extent of technology adoption towards implementation of data-centric model; and the second comprises of a focus survey and expert interviews pertaining on technologies that organisations have implemented to adopt the data-centric model. The latter study revealed insufficient data at the time of writing for the results to be statistically significant; however; indicative trends supported the assertions documented in the literature review. The question that this research answers is whether or not current technology implementations designed to mitigate risks from mobile devices, actually address business requirements. This research question, answered through these two sets qualitative studies, discovered inconsistencies between the technology implementations and business requirements. The thesis concludes by proposing a realistic model, based on the outcome of the qualitative study, which bridges the gap between the technology implementations and business requirements. Future work which could perhaps be conducted in light of the findings and the comments from this research is also considered.
- Full Text:
- Date Issued: 2014
- Authors: Mayisela, Simphiwe Hector
- Date: 2014
- Subjects: Computer security , Computer networks -- Security measures , Business enterprises -- Computer networks -- Security measures , Mobile computing -- Security measures , Mobile communication systems -- Security measures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4688 , http://hdl.handle.net/10962/d1011094 , Computer security , Computer networks -- Security measures , Business enterprises -- Computer networks -- Security measures , Mobile computing -- Security measures , Mobile communication systems -- Security measures
- Description: Data-centric security is significant in understanding, assessing and mitigating the various risks and impacts of sharing information outside corporate boundaries. Information generally leaves corporate boundaries through mobile devices. Mobile devices continue to evolve as multi-functional tools for everyday life, surpassing their initial intended use. This added capability and increasingly extensive use of mobile devices does not come without a degree of risk - hence the need to guard and protect information as it exists beyond the corporate boundaries and throughout its lifecycle. Literature on existing models crafted to protect data, rather than infrastructure in which the data resides, is reviewed. Technologies that organisations have implemented to adopt the data-centric model are studied. A utopian model that takes into account the shortcomings of existing technologies and deficiencies of common theories is proposed. Two sets of qualitative studies are reported; the first is a preliminary online survey to assess the ubiquity of mobile devices and extent of technology adoption towards implementation of data-centric model; and the second comprises of a focus survey and expert interviews pertaining on technologies that organisations have implemented to adopt the data-centric model. The latter study revealed insufficient data at the time of writing for the results to be statistically significant; however; indicative trends supported the assertions documented in the literature review. The question that this research answers is whether or not current technology implementations designed to mitigate risks from mobile devices, actually address business requirements. This research question, answered through these two sets qualitative studies, discovered inconsistencies between the technology implementations and business requirements. The thesis concludes by proposing a realistic model, based on the outcome of the qualitative study, which bridges the gap between the technology implementations and business requirements. Future work which could perhaps be conducted in light of the findings and the comments from this research is also considered.
- Full Text:
- Date Issued: 2014
Determinants of rural households’ diversification of livelihood strategies: a case of Intsika Yethu farmers of the Eastern Cape province, South Africa
- Authors: Munhenga, Daniel
- Date: 2014
- Subjects: Sustainable development -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape , Farm management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11220 , http://hdl.handle.net/10353/d1019818 , Sustainable development -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape , Farm management -- South Africa -- Eastern Cape
- Description: Despite the continuing perceived economic centrality of agriculture in Intsika Yethu local municipality, rural households engage and pursue diverse non-farm livelihood activities to cope with diverse challenges and risks such as drought. This study assessed the importance of existing livelihood strategies adopted by the different rural households in Intsika Yethu; the link between households’ ownership and access to different ‘assets’; factors determining households’ ability to adopt certain livelihood strategies in the area. A survey of 120 households in six administrative areas and informal discussions with key informants were used to collect demographic data, data on socio-economic activities and factors determining the choice of livelihood strategies of the households in Intsika Yethu. The research findings indicated that only about 10% of the interviewed households relied solely on on-farm livelihood strategy only. Credit, remittances, market distance, affiliating to cooperatives, education and household size have a potential of influencing households to shift from on-farm livelihood strategy to other livelihood strategies. The government may need to promote programs and awareness on how households can diversify their livelihood strategies as a way of coping with economic constraints in the area.
- Full Text:
- Date Issued: 2014
- Authors: Munhenga, Daniel
- Date: 2014
- Subjects: Sustainable development -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape , Farm management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11220 , http://hdl.handle.net/10353/d1019818 , Sustainable development -- South Africa -- Eastern Cape , Economic development projects -- South Africa -- Eastern Cape , Farm management -- South Africa -- Eastern Cape
- Description: Despite the continuing perceived economic centrality of agriculture in Intsika Yethu local municipality, rural households engage and pursue diverse non-farm livelihood activities to cope with diverse challenges and risks such as drought. This study assessed the importance of existing livelihood strategies adopted by the different rural households in Intsika Yethu; the link between households’ ownership and access to different ‘assets’; factors determining households’ ability to adopt certain livelihood strategies in the area. A survey of 120 households in six administrative areas and informal discussions with key informants were used to collect demographic data, data on socio-economic activities and factors determining the choice of livelihood strategies of the households in Intsika Yethu. The research findings indicated that only about 10% of the interviewed households relied solely on on-farm livelihood strategy only. Credit, remittances, market distance, affiliating to cooperatives, education and household size have a potential of influencing households to shift from on-farm livelihood strategy to other livelihood strategies. The government may need to promote programs and awareness on how households can diversify their livelihood strategies as a way of coping with economic constraints in the area.
- Full Text:
- Date Issued: 2014
Determinants of the yield curve in South Africa
- Authors: Ngonyama, Nomasomi
- Date: 2014
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11496
- Description: The yield curve has been the subject of many studies for some time, mainly in predicting recessions, economic growth and inflation. However, scant work is available on what drives the yield spread. Given this, the paper examines the determinants of the yield curve in South Africa by using time series econometric analysis over the period 2000-2012. Some key variables considered include inflation, economic growth, budget deficit, and monetary policy. To separate the long and short run effects, VECM was employed after ensuring stationarity of the series. The study found that a long run relationship exist between the yield spread, inflation, GDP, budget deficit, Repo rate, Real effective exchange rate and a money supply (M1). The Results of this thesis have implications for policy and academic work.
- Full Text:
- Date Issued: 2014
- Authors: Ngonyama, Nomasomi
- Date: 2014
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11496
- Description: The yield curve has been the subject of many studies for some time, mainly in predicting recessions, economic growth and inflation. However, scant work is available on what drives the yield spread. Given this, the paper examines the determinants of the yield curve in South Africa by using time series econometric analysis over the period 2000-2012. Some key variables considered include inflation, economic growth, budget deficit, and monetary policy. To separate the long and short run effects, VECM was employed after ensuring stationarity of the series. The study found that a long run relationship exist between the yield spread, inflation, GDP, budget deficit, Repo rate, Real effective exchange rate and a money supply (M1). The Results of this thesis have implications for policy and academic work.
- Full Text:
- Date Issued: 2014
Determining factors influencing sales growth in business banking in Buffalo City municipality, South Africa
- Authors: Koneti, Boniswa
- Date: 2014
- Subjects: Direct selling Sales management Marketing channels
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/10993 , vital:26865
- Description: The increase in number of banks entering the South African banking sector has caused the big four banks to lose their market share to the new entrants. As a result, the new entrants in this sector have also had negative effects on the existing banks’ sales growth and net profits. Business banking, in particular, has been one of the departments which has become competitive as it is considered to generate the most revenue from all the different bank departments. Business clients have been targeted as their fees are high compared to normal individual clients and also, their investment sizes are big compared to individuals, hence the increased interest in this section. This then prompts the question, what are the factors influencing sales growth in business banking? This question then brings one to the following sub-problems: Is the pricing offered by the various banks to their business bank customers competitive enough to retain them?; How competent and knowledgeable is the staff dealing with business bank customers in ensuring good relationships with business banking clients?; is the technology used by the banks advanced enough to address the banking requirements of business banking customers? Are business banking customers loyal to their respective banks to ensure repetitive sales? In dealing with the above, the author undertook a research study to determine whether factors such as competitive pricing, competent staff, advanced technology and customer loyalty influence sales growth in business banking in Buffalo City Municipality “BCM”. The sample of 90 business banking customers who were given questionnaires to test the above were from a population of business banking customers in BCM. The author underwent a theoretical and an empirical investigation using the survey method through questionnaires. These questionnaires were distributed to the various financing institutions dealing with business banking clients. The findings of the empirical study suggest that through the use of the hypothesis test, it was concluded that of the four factors, advanced technology and customer loyalty influence sales growth in business banking in BCM. While pricing and competent staff do not influence sales revenue growth.
- Full Text:
- Date Issued: 2014
- Authors: Koneti, Boniswa
- Date: 2014
- Subjects: Direct selling Sales management Marketing channels
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/10993 , vital:26865
- Description: The increase in number of banks entering the South African banking sector has caused the big four banks to lose their market share to the new entrants. As a result, the new entrants in this sector have also had negative effects on the existing banks’ sales growth and net profits. Business banking, in particular, has been one of the departments which has become competitive as it is considered to generate the most revenue from all the different bank departments. Business clients have been targeted as their fees are high compared to normal individual clients and also, their investment sizes are big compared to individuals, hence the increased interest in this section. This then prompts the question, what are the factors influencing sales growth in business banking? This question then brings one to the following sub-problems: Is the pricing offered by the various banks to their business bank customers competitive enough to retain them?; How competent and knowledgeable is the staff dealing with business bank customers in ensuring good relationships with business banking clients?; is the technology used by the banks advanced enough to address the banking requirements of business banking customers? Are business banking customers loyal to their respective banks to ensure repetitive sales? In dealing with the above, the author undertook a research study to determine whether factors such as competitive pricing, competent staff, advanced technology and customer loyalty influence sales growth in business banking in Buffalo City Municipality “BCM”. The sample of 90 business banking customers who were given questionnaires to test the above were from a population of business banking customers in BCM. The author underwent a theoretical and an empirical investigation using the survey method through questionnaires. These questionnaires were distributed to the various financing institutions dealing with business banking clients. The findings of the empirical study suggest that through the use of the hypothesis test, it was concluded that of the four factors, advanced technology and customer loyalty influence sales growth in business banking in BCM. While pricing and competent staff do not influence sales revenue growth.
- Full Text:
- Date Issued: 2014
Determining guidelines for effectively leading culturally diverse teams at Volkswagen South Africa
- Authors: Nkholise, Martha
- Date: 2014
- Subjects: Diversity in the workplace -- South Africa -- Eastern Cape , Multiculturalism
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8732 , http://hdl.handle.net/10948/d1010077 , Diversity in the workplace -- South Africa -- Eastern Cape , Multiculturalism
- Description: South Africa is a society of diverse cultures, and the workplace is one of the few places that serve as a melting pot for these varied cultures. If managed well, cultural diversity has numerous benefits that can help an organisation gain a competitive advantage. However, failure to manage it can pose challenges that can have serious consequences for an organisation. The purpose of this study was to analyse the leadership of cultural diversity at Volkswagen South Africa (VWSA) and identify leadership guidelines to both enhance team performance and reduce the challenges faced by the organisation as a result of this cultural diversity. For the purpose of this study, a culturally diverse team was defined as a team of diverse individuals from different cultures or societies working together to achieve organisational success. The research was conducted by the use of questionnaire using a sample of 200 employees of the VWSA Paint Shop. The sample represents 42 percent of the total population of the Paint Shop. The study discusses the relationship of four leadership styles (Classical Leadership, Transactional Leadership, Transformational Leadership, and Visionary Leadership) with Cultural Diversity. Whilst strong cases were made for Transformational and Transactional Leadership style being the most suitable styles for leading culturally diverse teams, the researcher concluded that no single leadership style would be ideal for effectively leading culturally diverse teams at VWSA. The appropriate leadership style will instead be a hybrid of all leadership styles, thus being a leadership approach that works as a sort of “best practices” of various leadership styles.
- Full Text:
- Date Issued: 2014
- Authors: Nkholise, Martha
- Date: 2014
- Subjects: Diversity in the workplace -- South Africa -- Eastern Cape , Multiculturalism
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8732 , http://hdl.handle.net/10948/d1010077 , Diversity in the workplace -- South Africa -- Eastern Cape , Multiculturalism
- Description: South Africa is a society of diverse cultures, and the workplace is one of the few places that serve as a melting pot for these varied cultures. If managed well, cultural diversity has numerous benefits that can help an organisation gain a competitive advantage. However, failure to manage it can pose challenges that can have serious consequences for an organisation. The purpose of this study was to analyse the leadership of cultural diversity at Volkswagen South Africa (VWSA) and identify leadership guidelines to both enhance team performance and reduce the challenges faced by the organisation as a result of this cultural diversity. For the purpose of this study, a culturally diverse team was defined as a team of diverse individuals from different cultures or societies working together to achieve organisational success. The research was conducted by the use of questionnaire using a sample of 200 employees of the VWSA Paint Shop. The sample represents 42 percent of the total population of the Paint Shop. The study discusses the relationship of four leadership styles (Classical Leadership, Transactional Leadership, Transformational Leadership, and Visionary Leadership) with Cultural Diversity. Whilst strong cases were made for Transformational and Transactional Leadership style being the most suitable styles for leading culturally diverse teams, the researcher concluded that no single leadership style would be ideal for effectively leading culturally diverse teams at VWSA. The appropriate leadership style will instead be a hybrid of all leadership styles, thus being a leadership approach that works as a sort of “best practices” of various leadership styles.
- Full Text:
- Date Issued: 2014
Developing an understanding of the drivers of bat activity patterns relevant to wind turbines
- Authors: Thwaits, Tiffany Edan
- Date: 2014
- Subjects: Bats -- Behavior -- Climatic factors -- South Africa , Bats -- Ecology -- South Africa -- Eastern Cape , Wind power -- Environmental aspects
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10726 , http://hdl.handle.net/10948/d1020970
- Description: The increasing number of proposed wind farm developments in South Africa provides an immediate reason to assess bat activity and diversity, with the expectation of developing measures to mitigate for negative impacts. The overall aim of this thesis was contribute to an understanding of the drivers of bat activity, relevant to wind turbines, and to determine what factors (exogenous – environmental, or endogenous – intrinsic physiological processes) contributed to observed bat activity patterns, at the Metrowind Van Stadens Wind Farm in the Eastern Cape of South Africa. A combination of active (mist netting) and passive (acoustic) bat monitoring techniques were used to determine free-ranging bat activity patterns (Chapter 3). A total of 889 bat passes were recorded over 323 detector nights from the beginning of May 2012 to the end of December 2012. The Cape serotine bat (82 per cent) and the Egyptian free-tailed bat (97 per cent) made up the majority of all bat passes recorded on site. Large variations in bat activity per month and per hour were apparent, with bat activity peaking in May 2012 and during the first few hours after sunset (18:00-23:00). Patterns in nightly, free-ranging bat activity at the site were modelled against various environmental conditions. Month, temperature, wind speed and an interaction between month and rainfall were the most significant predictors of bat activity, explaining 80 per cent of the variation observed on free-ranging bat activity patterns. A total of eight Cape serotine bats (Table 4.1.) were caught in mist nets on site and changes in the resting metabolic rate (RMR) of torpid (n = 6), and normothermic (n = 2) bats, over a 24 hr period, were measured and used to predict free-ranging Cape serotine bat activity (Chapter 4). Cape serotine bats showed a high proclivity for torpor in the laboratory and peaks in RMR were observed at 18:00 (0.89 ± 0.95 VO2 mℓ.g-1.hr-1) and again from 20:00-21:00 (0.89 ± 0.91 VO2 mℓ.g-1.hr-1). Peaks in RMR of torpid individuals coincided with peaks in the average hourly free-ranging activity of the Cape serotine bat, and RMR explained 33 per cent of the variation and was a good predictor of free-ranging bat activity (R2 = 0.2914). This study showed that both exogenous (Chapter 3) and endogenous (Chapter 4) factors drive bat activity in the wild. Although this dissertation was not intended for wind turbine management, the information presented on the biology and activity of bats is important for managing interactions between bats and wind turbines. By determining what factors influence bat activity, we are able to predict when bats will be most active and thus can develop mitigation measures to reduce the potential impacts that wind turbines will have on the bat community. In order to conserve bats and reduce potential bat fatalities from occurring at the site, mitigation measures should be concentrated to those times when bats are most active (May and during the first few hours after sunset – 18:00 to 22:00).
- Full Text:
- Date Issued: 2014
- Authors: Thwaits, Tiffany Edan
- Date: 2014
- Subjects: Bats -- Behavior -- Climatic factors -- South Africa , Bats -- Ecology -- South Africa -- Eastern Cape , Wind power -- Environmental aspects
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10726 , http://hdl.handle.net/10948/d1020970
- Description: The increasing number of proposed wind farm developments in South Africa provides an immediate reason to assess bat activity and diversity, with the expectation of developing measures to mitigate for negative impacts. The overall aim of this thesis was contribute to an understanding of the drivers of bat activity, relevant to wind turbines, and to determine what factors (exogenous – environmental, or endogenous – intrinsic physiological processes) contributed to observed bat activity patterns, at the Metrowind Van Stadens Wind Farm in the Eastern Cape of South Africa. A combination of active (mist netting) and passive (acoustic) bat monitoring techniques were used to determine free-ranging bat activity patterns (Chapter 3). A total of 889 bat passes were recorded over 323 detector nights from the beginning of May 2012 to the end of December 2012. The Cape serotine bat (82 per cent) and the Egyptian free-tailed bat (97 per cent) made up the majority of all bat passes recorded on site. Large variations in bat activity per month and per hour were apparent, with bat activity peaking in May 2012 and during the first few hours after sunset (18:00-23:00). Patterns in nightly, free-ranging bat activity at the site were modelled against various environmental conditions. Month, temperature, wind speed and an interaction between month and rainfall were the most significant predictors of bat activity, explaining 80 per cent of the variation observed on free-ranging bat activity patterns. A total of eight Cape serotine bats (Table 4.1.) were caught in mist nets on site and changes in the resting metabolic rate (RMR) of torpid (n = 6), and normothermic (n = 2) bats, over a 24 hr period, were measured and used to predict free-ranging Cape serotine bat activity (Chapter 4). Cape serotine bats showed a high proclivity for torpor in the laboratory and peaks in RMR were observed at 18:00 (0.89 ± 0.95 VO2 mℓ.g-1.hr-1) and again from 20:00-21:00 (0.89 ± 0.91 VO2 mℓ.g-1.hr-1). Peaks in RMR of torpid individuals coincided with peaks in the average hourly free-ranging activity of the Cape serotine bat, and RMR explained 33 per cent of the variation and was a good predictor of free-ranging bat activity (R2 = 0.2914). This study showed that both exogenous (Chapter 3) and endogenous (Chapter 4) factors drive bat activity in the wild. Although this dissertation was not intended for wind turbine management, the information presented on the biology and activity of bats is important for managing interactions between bats and wind turbines. By determining what factors influence bat activity, we are able to predict when bats will be most active and thus can develop mitigation measures to reduce the potential impacts that wind turbines will have on the bat community. In order to conserve bats and reduce potential bat fatalities from occurring at the site, mitigation measures should be concentrated to those times when bats are most active (May and during the first few hours after sunset – 18:00 to 22:00).
- Full Text:
- Date Issued: 2014
Developing of a supply chain framework for civil engineering SMME's within the Nelson Mandela Bay Municipality
- Authors: Timotheus, Francois
- Date: 2014
- Subjects: Business logistics -- South Africa -- Nelson Mandela Bay Municipality Small business -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11242 , vital:26901
- Description: A lot of SMME development initiatives have been subsidised from the funds accumulated from taxpayers. In the promotion of sustainability and growth of SMMEs within developing countries particularly within the BRICS, South Africa is lagging despite its efforts over the past 17 years. According to STATS SA, SA’s unemployment rate for 2011 was between 24-36% and economic growth was 3.1%, the Eastern Cape Province is the poorest province within SA and therefore residence within the province is looking at start-up businesses to better their economic situation. The NMBM economic growth and employment is driven largely by its Integrated Development Plan (IDP) 2013/2014. Aims and objectives:To develop a supply chain management policy that addresses the challenges faced by infrastructure officials, supply chain management practitioners and ward councillors with regards to SMME engagement; and, Investigating the strengths, weaknesses and effectiveness of the current supply chain management policy employed within Nelson Mandela Bay Municipality with regards to SMME engagement. Research methodology: A questionnaire was used in this study to conduct quantitative research; the questionnaire was also used as a data collection tool. Valuable information was gathered from SMMEs residing in the Nelson Mandela Bay Municipal area who operate in the civil engineering field. These SMMEs formed the core research sample. Results: The findings suggest that the current supply chain management (SCM) policy of the Nelson Mandela Bay Municipality (NMBM) does not adequately address the challenges encountered by SMMEs. This suggests the SCM policy is inadequate and the policy must be amended to address its short falls:There is a need for a contractor development programme in the NMBM to assist the Potentially Emerging (PE) contractors within its boundaries;The NMBM is regulating the SMME market for competitiveness to some extent with its SCM policy;Even though the market is being regulated for competitiveness, it is not regulated with regards to new entries into the market; There is a need for the NMBM to provide business development services to SMME’s within its boundaries; The majority of SMME’s believed that there is no gender discrimination within the banking sector;The NMBM is an efficient government institution when it comes to settling their debt in a timely manner;The NMBM must appoint a committee to address the problems faced by SMME’s within its boundaries;South Africa’s National Credit Act (NCA) prevents SMME’s from acquiring an uncontrollable amount of debt. Conclusion: SMME’s within the NMBM enjoy a healthy credit record; these SMME’s also pay their suppliers in a timely fashion. Employees of these SMME’s are adequately compensated for their services. Some SMME’s service the equipment regularly and some do not. Some SMME’s are able to cover their overheads from the projects they undertake and some are not. SMME’s residing in the NMBM have experienced a growth in their business over the last financial year, even though they have not received substantial work over this period. The quality of the end product produced by some SMME’s meets the standard required by the NMBM. Recommendations: To address the development needs of the SMME’s the SCM policy needs to be amended to provide business development services and off-the-job training. To address the access to finance needs of the SMME’s the SCM policy needs to be amended to assist SMME’s in acquiring start-up capital, getting a reduced interest rate and creating work opportunities through micro-financing.
- Full Text:
- Date Issued: 2014
- Authors: Timotheus, Francois
- Date: 2014
- Subjects: Business logistics -- South Africa -- Nelson Mandela Bay Municipality Small business -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11242 , vital:26901
- Description: A lot of SMME development initiatives have been subsidised from the funds accumulated from taxpayers. In the promotion of sustainability and growth of SMMEs within developing countries particularly within the BRICS, South Africa is lagging despite its efforts over the past 17 years. According to STATS SA, SA’s unemployment rate for 2011 was between 24-36% and economic growth was 3.1%, the Eastern Cape Province is the poorest province within SA and therefore residence within the province is looking at start-up businesses to better their economic situation. The NMBM economic growth and employment is driven largely by its Integrated Development Plan (IDP) 2013/2014. Aims and objectives:To develop a supply chain management policy that addresses the challenges faced by infrastructure officials, supply chain management practitioners and ward councillors with regards to SMME engagement; and, Investigating the strengths, weaknesses and effectiveness of the current supply chain management policy employed within Nelson Mandela Bay Municipality with regards to SMME engagement. Research methodology: A questionnaire was used in this study to conduct quantitative research; the questionnaire was also used as a data collection tool. Valuable information was gathered from SMMEs residing in the Nelson Mandela Bay Municipal area who operate in the civil engineering field. These SMMEs formed the core research sample. Results: The findings suggest that the current supply chain management (SCM) policy of the Nelson Mandela Bay Municipality (NMBM) does not adequately address the challenges encountered by SMMEs. This suggests the SCM policy is inadequate and the policy must be amended to address its short falls:There is a need for a contractor development programme in the NMBM to assist the Potentially Emerging (PE) contractors within its boundaries;The NMBM is regulating the SMME market for competitiveness to some extent with its SCM policy;Even though the market is being regulated for competitiveness, it is not regulated with regards to new entries into the market; There is a need for the NMBM to provide business development services to SMME’s within its boundaries; The majority of SMME’s believed that there is no gender discrimination within the banking sector;The NMBM is an efficient government institution when it comes to settling their debt in a timely manner;The NMBM must appoint a committee to address the problems faced by SMME’s within its boundaries;South Africa’s National Credit Act (NCA) prevents SMME’s from acquiring an uncontrollable amount of debt. Conclusion: SMME’s within the NMBM enjoy a healthy credit record; these SMME’s also pay their suppliers in a timely fashion. Employees of these SMME’s are adequately compensated for their services. Some SMME’s service the equipment regularly and some do not. Some SMME’s are able to cover their overheads from the projects they undertake and some are not. SMME’s residing in the NMBM have experienced a growth in their business over the last financial year, even though they have not received substantial work over this period. The quality of the end product produced by some SMME’s meets the standard required by the NMBM. Recommendations: To address the development needs of the SMME’s the SCM policy needs to be amended to provide business development services and off-the-job training. To address the access to finance needs of the SMME’s the SCM policy needs to be amended to assist SMME’s in acquiring start-up capital, getting a reduced interest rate and creating work opportunities through micro-financing.
- Full Text:
- Date Issued: 2014
Development and assessment of sustained release stavudine loaded microparticles
- Authors: Zindove, Chiedza Cathrine
- Date: 2014
- Language: English
- Type: text , Thesis , Masters , MPharm
- Identifier: http://hdl.handle.net/10962/54722 , vital:26603
- Description:
Stavudine (D4T) has been used as first line treatment for HIV/AIDS and is part of highly active anti retroviral treatment (HAART). It is an affordable medicine and its use is beneficial in resource limited settings. However D4T exhibits dose dependent side effects that may lead to non-adherence in patients. This study was undertaken to formulate, develop and manufacture a dosage form that could reduce dose dependent side effects by decreasing the dose of D4T but still exhibit antiretroviral (ARV) activity. The use of sustained release (SR) formulations of D4T that ensure constant levels of the D4T in the body would not only optimize therapy but also reduce the incidence of side effects thereby increasing patient adherence. SR microparticles containing 30mg D4T were manufactured and loaded into size 3 hard gelatine capsules prior to analysis. The D4T microparticles were manufactured by microencapsulation using non-aqueous oil-in-oil solvent evaporation approach. D4T-excipient, excipient-excipient interactions and D4T purity were assessed using Infrared Spectroscopy (IR), Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). Copolymers synthesized from acrylic and methacrylic acid esters viz., Eudragit® RSPO and S100 were used as rate retardant materials and the effect of microcrystalline cellulose (Avicel® PH102) on the microparticles was also investigated. Magnesium stearate was used as a droplet stabilizer and n-hexane was added to harden the microspheres formed in a liquid paraffin continuous phase. The microparticles were optimized using a Box Behnken design and Response Surface Methodology (RSM). The microparticles were characterized in terms of their flow properties and encapsulation efficiency (% EE), in addition to visualization of the surface morphology with Scanning Electron Microscopy. In vitro D4T release studies were performed using USP Apparatus III in media of different pH and the samples were analysed using a validated High Performance Liquid Chromatographic (HPLC) method with ultraviolet (UV) detection that had been developed and optimized using a Central Composite Design (CCD). The method was validated according to ICH guidelines. The IR spectra and DSC thermographs revealed that D4T exhibited thermal stability and there was no evidence of D4T-excipient and excipient-excipient interactions. The microparticles that were produced were white, free flowing and were obtained in a high yield with high encapsulation efficiency. Scanning Electron Microscopy studies revealed that the microparticles were spherical and porous in nature. In vitro D4T release extended to 12 hours and the mechanism of release was established using model dependent methods by fitting the data to a Zero order, First order, Higuchi and Hixson Crowell model. It was observed that the mechanism of D4T release was diffusion-controlled and that the data was best fitted to the Higuchi model with correlation coefficients > 0.9. The release mechanism was confirmed using the Korsmeyer-Peppas model that revealed that most of the formulations exhibited anomalous transport kinetics with the release exponent, n, ranging from 0.5
- Full Text:
- Date Issued: 2014
- Authors: Zindove, Chiedza Cathrine
- Date: 2014
- Language: English
- Type: text , Thesis , Masters , MPharm
- Identifier: http://hdl.handle.net/10962/54722 , vital:26603
- Description:
Stavudine (D4T) has been used as first line treatment for HIV/AIDS and is part of highly active anti retroviral treatment (HAART). It is an affordable medicine and its use is beneficial in resource limited settings. However D4T exhibits dose dependent side effects that may lead to non-adherence in patients. This study was undertaken to formulate, develop and manufacture a dosage form that could reduce dose dependent side effects by decreasing the dose of D4T but still exhibit antiretroviral (ARV) activity. The use of sustained release (SR) formulations of D4T that ensure constant levels of the D4T in the body would not only optimize therapy but also reduce the incidence of side effects thereby increasing patient adherence. SR microparticles containing 30mg D4T were manufactured and loaded into size 3 hard gelatine capsules prior to analysis. The D4T microparticles were manufactured by microencapsulation using non-aqueous oil-in-oil solvent evaporation approach. D4T-excipient, excipient-excipient interactions and D4T purity were assessed using Infrared Spectroscopy (IR), Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). Copolymers synthesized from acrylic and methacrylic acid esters viz., Eudragit® RSPO and S100 were used as rate retardant materials and the effect of microcrystalline cellulose (Avicel® PH102) on the microparticles was also investigated. Magnesium stearate was used as a droplet stabilizer and n-hexane was added to harden the microspheres formed in a liquid paraffin continuous phase. The microparticles were optimized using a Box Behnken design and Response Surface Methodology (RSM). The microparticles were characterized in terms of their flow properties and encapsulation efficiency (% EE), in addition to visualization of the surface morphology with Scanning Electron Microscopy. In vitro D4T release studies were performed using USP Apparatus III in media of different pH and the samples were analysed using a validated High Performance Liquid Chromatographic (HPLC) method with ultraviolet (UV) detection that had been developed and optimized using a Central Composite Design (CCD). The method was validated according to ICH guidelines. The IR spectra and DSC thermographs revealed that D4T exhibited thermal stability and there was no evidence of D4T-excipient and excipient-excipient interactions. The microparticles that were produced were white, free flowing and were obtained in a high yield with high encapsulation efficiency. Scanning Electron Microscopy studies revealed that the microparticles were spherical and porous in nature. In vitro D4T release extended to 12 hours and the mechanism of release was established using model dependent methods by fitting the data to a Zero order, First order, Higuchi and Hixson Crowell model. It was observed that the mechanism of D4T release was diffusion-controlled and that the data was best fitted to the Higuchi model with correlation coefficients > 0.9. The release mechanism was confirmed using the Korsmeyer-Peppas model that revealed that most of the formulations exhibited anomalous transport kinetics with the release exponent, n, ranging from 0.5
- Full Text:
- Date Issued: 2014
Development finance in small and medium enterprises in Matjhabeng Municipality
- Babalola, Oluwanifesimi Omolade
- Authors: Babalola, Oluwanifesimi Omolade
- Date: 2014
- Subjects: Business enterprises -- South Africa -- Finance , Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9187 , http://hdl.handle.net/10948/d1020215
- Description: It has been generally accepted within the developed and developing countries of the world that SMES contributes significantly to employment creation as the world population increases and that it also contributes to the economic growth of the areas they are situated in. Finance is the blood (life) of any business, for a business to be successful it needs steady successful access to funds and post financial support which leads to actualization of ideas, leads to investment and expansion, improves access to market amongst others. This is why the impact of development finance can never be over emphasized. The aims of the study are: To understand the extent to which small and medium businesses are supported through the availability of financial assistance in Matjabeng Municipality. To establish the survival rates of businesses that has been funded and or supported and whether they are or not sustainable. In achieving the aims and objectives of the research, the researcher looked at development funds both from the supply side and the demand side. The supply side which involved semi structured interviews with consultants of government parastatals (the FDC and DETEA) who are involved in financing Small Medium Enterprises in Matjhabeng municipality. The demand side involved administering of questionnaires to Entrepreneurs in the municipality who are registered with the Local Economic Department (LED), which led to the acceptance of the hypothesis of the research that development finance actually helps in the growth of small medium enterprises but in conjunction with post financial support such as bookkeeping, accounting, monitoring and evaluation. The researcher also discovered some findings amongst others which includes: The most effective ways entrepreneurs heard about funding in the municipality are through the media and word of mouth. Most of the entrepreneurs that received some type of funding are startups. More entrepreneurs that had access to funds also got some post financial business support. Financial assistance to entrepreneurs yielded improvements after respondents received financial assistance, the range of goods offered was improved and more jobs were created, entrepreneurs were able to obtain better business premises either by renting or buying and entrepreneurs had access to better equipment. Some of the recommendations of this study includes; The municipal government should help small and medium enterprises in the municipality by linking them to new markets. Effective monitoring and evaluation systems should be put in place by development funders and non-financial support services. Entrepreneurial skills development should be provided by the public and private agencies by organizing workshops for aspiring entrepreneurs in order to expose them to business opportunities that are sustainable and viable.
- Full Text:
- Date Issued: 2014
- Authors: Babalola, Oluwanifesimi Omolade
- Date: 2014
- Subjects: Business enterprises -- South Africa -- Finance , Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9187 , http://hdl.handle.net/10948/d1020215
- Description: It has been generally accepted within the developed and developing countries of the world that SMES contributes significantly to employment creation as the world population increases and that it also contributes to the economic growth of the areas they are situated in. Finance is the blood (life) of any business, for a business to be successful it needs steady successful access to funds and post financial support which leads to actualization of ideas, leads to investment and expansion, improves access to market amongst others. This is why the impact of development finance can never be over emphasized. The aims of the study are: To understand the extent to which small and medium businesses are supported through the availability of financial assistance in Matjabeng Municipality. To establish the survival rates of businesses that has been funded and or supported and whether they are or not sustainable. In achieving the aims and objectives of the research, the researcher looked at development funds both from the supply side and the demand side. The supply side which involved semi structured interviews with consultants of government parastatals (the FDC and DETEA) who are involved in financing Small Medium Enterprises in Matjhabeng municipality. The demand side involved administering of questionnaires to Entrepreneurs in the municipality who are registered with the Local Economic Department (LED), which led to the acceptance of the hypothesis of the research that development finance actually helps in the growth of small medium enterprises but in conjunction with post financial support such as bookkeeping, accounting, monitoring and evaluation. The researcher also discovered some findings amongst others which includes: The most effective ways entrepreneurs heard about funding in the municipality are through the media and word of mouth. Most of the entrepreneurs that received some type of funding are startups. More entrepreneurs that had access to funds also got some post financial business support. Financial assistance to entrepreneurs yielded improvements after respondents received financial assistance, the range of goods offered was improved and more jobs were created, entrepreneurs were able to obtain better business premises either by renting or buying and entrepreneurs had access to better equipment. Some of the recommendations of this study includes; The municipal government should help small and medium enterprises in the municipality by linking them to new markets. Effective monitoring and evaluation systems should be put in place by development funders and non-financial support services. Entrepreneurial skills development should be provided by the public and private agencies by organizing workshops for aspiring entrepreneurs in order to expose them to business opportunities that are sustainable and viable.
- Full Text:
- Date Issued: 2014
Development NGOs : understanding participatory methods, accountability and effectiveness of World Vision in Zimbabwe with specific reference to Umzingwane District.
- Authors: Knight, Kayla Christine
- Date: 2014
- Subjects: World Vision International , Non-governmental organizations -- Zimbabwe , Non-governmental organizations -- Evaluation , Economic assistance -- Zimbabwe , Economic development -- Zimbabwe , Zimbabwe -- Politics and government -- 1980- , Zimbabwe -- Social conditions -- 1980- , Zimbabwe -- Economic conditions -- 1980-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3376 , http://hdl.handle.net/10962/d1013135
- Description: Non-governmental Organizations (NGOs) have occupied a prominent role in the development of rural Zimbabwe since the time of its independence in 1980. NGO work in Zimbabwe currently takes place within the context of a tense and fluid political climate, an economy struggling to recover from crisis, international skepticism toward long-term donor investment in development, and global expectations about the methodologies and accountability measures carried out in intervention-based development work. In the light of the participatory methodologies and empowerment-based development frameworks that dominate the current global expectations for work within the NGO sector, this thesis focuses on the work of one particular NGO working in Zimbabwe, namely, World Vision. The main objective of the thesis is to understand and explain the participatory methods, accountability and effectiveness of World Vision in Zimbabwe (with particular reference to Umzingwane District) and, in doing so, to deepen the theoretical understanding of NGOs as constituting a particular organizational form. World Vision is a large-scale international NGO that has a pronounced presence in Zimbabwe and it is specifically active in Umzingwane District in Matabeleland South Province. The thesis argues that NGOs exist within a complex and tense condition entailing continuous responses to pressures from donors and states that structure their survival. Ultimately, in maneuvering through such pressures, NGOs tend to choose directions which best enable their own sustainability, often at the cost of the deep participatory forms that may heighten the legitimacy of their roles. World Vision Zimbabwe responds to donor trends, national and local expectations of the state and its own organizational expectations by building local government capacity in order to maintain the longevity and measureable outputs of its projects. In doing so, it redefines the concept of participation in pursuing efficient and practical approaches to ‘getting things done’. This compromises deep participatory methodologies and, in essence, alters the practices involved in participatory forms in order to maintain World Vision’s own organizational sustainability and presence in Zimbabwe.
- Full Text:
- Date Issued: 2014
- Authors: Knight, Kayla Christine
- Date: 2014
- Subjects: World Vision International , Non-governmental organizations -- Zimbabwe , Non-governmental organizations -- Evaluation , Economic assistance -- Zimbabwe , Economic development -- Zimbabwe , Zimbabwe -- Politics and government -- 1980- , Zimbabwe -- Social conditions -- 1980- , Zimbabwe -- Economic conditions -- 1980-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3376 , http://hdl.handle.net/10962/d1013135
- Description: Non-governmental Organizations (NGOs) have occupied a prominent role in the development of rural Zimbabwe since the time of its independence in 1980. NGO work in Zimbabwe currently takes place within the context of a tense and fluid political climate, an economy struggling to recover from crisis, international skepticism toward long-term donor investment in development, and global expectations about the methodologies and accountability measures carried out in intervention-based development work. In the light of the participatory methodologies and empowerment-based development frameworks that dominate the current global expectations for work within the NGO sector, this thesis focuses on the work of one particular NGO working in Zimbabwe, namely, World Vision. The main objective of the thesis is to understand and explain the participatory methods, accountability and effectiveness of World Vision in Zimbabwe (with particular reference to Umzingwane District) and, in doing so, to deepen the theoretical understanding of NGOs as constituting a particular organizational form. World Vision is a large-scale international NGO that has a pronounced presence in Zimbabwe and it is specifically active in Umzingwane District in Matabeleland South Province. The thesis argues that NGOs exist within a complex and tense condition entailing continuous responses to pressures from donors and states that structure their survival. Ultimately, in maneuvering through such pressures, NGOs tend to choose directions which best enable their own sustainability, often at the cost of the deep participatory forms that may heighten the legitimacy of their roles. World Vision Zimbabwe responds to donor trends, national and local expectations of the state and its own organizational expectations by building local government capacity in order to maintain the longevity and measureable outputs of its projects. In doing so, it redefines the concept of participation in pursuing efficient and practical approaches to ‘getting things done’. This compromises deep participatory methodologies and, in essence, alters the practices involved in participatory forms in order to maintain World Vision’s own organizational sustainability and presence in Zimbabwe.
- Full Text:
- Date Issued: 2014
Development of a bench scale single batch biomass to liquid fuel facility
- Authors: Zhang, Yusheng
- Date: 2014
- Subjects: Biomass energy , Renewable energy sources , Energy conversion , Electric power production
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: http://hdl.handle.net/10353/811 , vital:26499 , Biomass energy , Renewable energy sources , Energy conversion , Electric power production
- Description: The research described in this dissertation was motivated by the global demand for energy that is not dependent on coal, oil, natural gas and other non-renewable fossil fuels. The technology used in this project is related to the use of biomass to produce a viable alternative to conventional sources of fuel. A bench scale biomass to liquid (BTL) facility was built and tested. This produced results confirming the feasibility of the BTL process. The findings of the pilot study outlined in this dissertation justified the conclusion that the next step will be to expand the capacity and productivity of the BTL pilot plant to an industrial scale. Biomass comes from a variety of renewable sources that are readily available. In this case, the material used in the fixed bed biomass gasification facility to generate wood gas was agricultural and forestry waste, such as straw and wood chips. The gasifier had the capacity to produce up to 10 cubic metres/hr of gas with a carbon monoxide and hydrogen content of between 20–40% by volume, when it was operated at ambient pressure and with air as the oxidizer. The gas, produced at a temperature above 700º C, was cooled in a quench/water scrubber in order to remove most of the mechanical impurities (tars and water-soluble inorganic particles), condensed and dried with corn cobs before being compressed in cylinders at over 100 bar (g) for use in the Fischer-Tropsch Synthesis (FTS). The syngas was subjected further to a series of refining processes which included removal of sulphur and oxygen. The sulphur removal technology chosen entailed applying modified activated carbon to adsorb H2S with the help of hydrolysis in order to convert organic sulphur impurities into H2S which reduced the sulphur content of the gas to less than 5 ppbv. Supported cobalt catalyst (100 grams), were loaded into a single-tube fixed bed FT reactor with an inner diameter of 50 mm. The reactor was fitted with a heating jacket through which, heated oil ran to cool the reactor during a normal reaction occurring at < 250 ºC, while nitrogen was used in the heating jacket during reduction, which occurred at temperatures up ~ 350 ºC. The FTS reaction was carried out at different pressures and temperatures. Liquid and wax products were produced from the facility. The properties of the liquid and solid hydrocarbons produced were found to be the same as FT products from other feed stocks, such as natural gas and coal.
- Full Text:
- Date Issued: 2014
- Authors: Zhang, Yusheng
- Date: 2014
- Subjects: Biomass energy , Renewable energy sources , Energy conversion , Electric power production
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: http://hdl.handle.net/10353/811 , vital:26499 , Biomass energy , Renewable energy sources , Energy conversion , Electric power production
- Description: The research described in this dissertation was motivated by the global demand for energy that is not dependent on coal, oil, natural gas and other non-renewable fossil fuels. The technology used in this project is related to the use of biomass to produce a viable alternative to conventional sources of fuel. A bench scale biomass to liquid (BTL) facility was built and tested. This produced results confirming the feasibility of the BTL process. The findings of the pilot study outlined in this dissertation justified the conclusion that the next step will be to expand the capacity and productivity of the BTL pilot plant to an industrial scale. Biomass comes from a variety of renewable sources that are readily available. In this case, the material used in the fixed bed biomass gasification facility to generate wood gas was agricultural and forestry waste, such as straw and wood chips. The gasifier had the capacity to produce up to 10 cubic metres/hr of gas with a carbon monoxide and hydrogen content of between 20–40% by volume, when it was operated at ambient pressure and with air as the oxidizer. The gas, produced at a temperature above 700º C, was cooled in a quench/water scrubber in order to remove most of the mechanical impurities (tars and water-soluble inorganic particles), condensed and dried with corn cobs before being compressed in cylinders at over 100 bar (g) for use in the Fischer-Tropsch Synthesis (FTS). The syngas was subjected further to a series of refining processes which included removal of sulphur and oxygen. The sulphur removal technology chosen entailed applying modified activated carbon to adsorb H2S with the help of hydrolysis in order to convert organic sulphur impurities into H2S which reduced the sulphur content of the gas to less than 5 ppbv. Supported cobalt catalyst (100 grams), were loaded into a single-tube fixed bed FT reactor with an inner diameter of 50 mm. The reactor was fitted with a heating jacket through which, heated oil ran to cool the reactor during a normal reaction occurring at < 250 ºC, while nitrogen was used in the heating jacket during reduction, which occurred at temperatures up ~ 350 ºC. The FTS reaction was carried out at different pressures and temperatures. Liquid and wax products were produced from the facility. The properties of the liquid and solid hydrocarbons produced were found to be the same as FT products from other feed stocks, such as natural gas and coal.
- Full Text:
- Date Issued: 2014
Development of a mechatronic transmission control system for the drivetrain of the K71 project
- Authors: Nortemann, Alexander
- Date: 2014
- Subjects: Motor vehicles -- Transmission devices , Automobiles -- Power trains , Automobile driving -- Shifting gear
- Language: English
- Type: Thesis , Masters , MEngineering (Mechatronics)
- Identifier: vital:9659
- Description: The tractive force has to be interrupted during a gear-shifting operation in a manual vehicle transmission, leading into a decrease of speed while changing gears during the acceleration process. Therefore in a racing application, the shifting time has to be as short as possible so that the required performance of a racing car can be achieved. The following dissertation describes the development of a transmission control system to enable gear changes within a manual gearbox, which was designed for the Formula Student racing series. Various solutions were developed on the basis of reviewed literature, technical data of components and experiences of Formula Student teams. Following this, a comparison of the concepts by means of a utility analysis identified the pneumatic actuation of selector forks to be the most suitable concept. This was mainly due to the expected shifting time, the weight, and its advantageous energy supply requirement. After the selection of the actuators and the position sensors, the system was implemented into the drivetrain to check the tment and the technical feasibility. To draw conclusions regarding the shifting time and to prove the functionality of the system, an open test bench was constructed. Additionally, the hardware and software had to be developed to enable the test run. After the manufacturing and assembling of the test bench, the optimal settings for the test run were determined. By comparing the achieved shifting time of alternative solutions, an improvement in the driving performance of a Formula Student race car is probable.
- Full Text:
- Date Issued: 2014
- Authors: Nortemann, Alexander
- Date: 2014
- Subjects: Motor vehicles -- Transmission devices , Automobiles -- Power trains , Automobile driving -- Shifting gear
- Language: English
- Type: Thesis , Masters , MEngineering (Mechatronics)
- Identifier: vital:9659
- Description: The tractive force has to be interrupted during a gear-shifting operation in a manual vehicle transmission, leading into a decrease of speed while changing gears during the acceleration process. Therefore in a racing application, the shifting time has to be as short as possible so that the required performance of a racing car can be achieved. The following dissertation describes the development of a transmission control system to enable gear changes within a manual gearbox, which was designed for the Formula Student racing series. Various solutions were developed on the basis of reviewed literature, technical data of components and experiences of Formula Student teams. Following this, a comparison of the concepts by means of a utility analysis identified the pneumatic actuation of selector forks to be the most suitable concept. This was mainly due to the expected shifting time, the weight, and its advantageous energy supply requirement. After the selection of the actuators and the position sensors, the system was implemented into the drivetrain to check the tment and the technical feasibility. To draw conclusions regarding the shifting time and to prove the functionality of the system, an open test bench was constructed. Additionally, the hardware and software had to be developed to enable the test run. After the manufacturing and assembling of the test bench, the optimal settings for the test run were determined. By comparing the achieved shifting time of alternative solutions, an improvement in the driving performance of a Formula Student race car is probable.
- Full Text:
- Date Issued: 2014
Development of a theoretical model of integrated reporting for Johannesburg Stock Exchange (JSE) listed companies
- Authors: Ncemane, Zuko
- Date: 2014
- Subjects: Corporation reports -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11265 , vital:26903
- Description: Purpose – The purpose of this case study research was to develop a theoretical model of integrated reporting for Johannesburg Stock Exchange (JSE) listed companies. Design/Methodology/Approach – The goal of this case study research was to understand how and why integrated reports are prepared, to develop a theoretical model of integrated reporting for JSE listed companies through literature review and analysis of published integrated reports. In addition, to investigate the perceived success of integrated reporting by examining its requirements, objectives, enforceability and implications to the listed companies. Based on the above, to determine how companies fulfil the requirements of integrated reporting and what those requirements are. To determine by comparing published integrated reports of companies, similarities or comparability of the information published on integrated reports ascertaining the measurability of the success of the application of integrated reporting. Practical implications – This case study research provides a useful insight into drivers of integrated reporting. Limitations to the study – The lack of responses from industry experts contacted for interviews considered a limitation in validating the outcome of the study. Originality/Value – This case study research looks at the current adoption and application of integrated reporting by JSE listed companies.
- Full Text:
- Date Issued: 2014
- Authors: Ncemane, Zuko
- Date: 2014
- Subjects: Corporation reports -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11265 , vital:26903
- Description: Purpose – The purpose of this case study research was to develop a theoretical model of integrated reporting for Johannesburg Stock Exchange (JSE) listed companies. Design/Methodology/Approach – The goal of this case study research was to understand how and why integrated reports are prepared, to develop a theoretical model of integrated reporting for JSE listed companies through literature review and analysis of published integrated reports. In addition, to investigate the perceived success of integrated reporting by examining its requirements, objectives, enforceability and implications to the listed companies. Based on the above, to determine how companies fulfil the requirements of integrated reporting and what those requirements are. To determine by comparing published integrated reports of companies, similarities or comparability of the information published on integrated reports ascertaining the measurability of the success of the application of integrated reporting. Practical implications – This case study research provides a useful insight into drivers of integrated reporting. Limitations to the study – The lack of responses from industry experts contacted for interviews considered a limitation in validating the outcome of the study. Originality/Value – This case study research looks at the current adoption and application of integrated reporting by JSE listed companies.
- Full Text:
- Date Issued: 2014