The role of indigenous knowledge in computer education in Africa
- Dalvit, Lorenzo, Murray, Sarah, Terzoli, Alfredo
- Authors: Dalvit, Lorenzo , Murray, Sarah , Terzoli, Alfredo
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431033 , vital:72739 , https://doi.org/10.1007/978-0-387-09729-9_43
- Description: The integration of indigenous knowledge/languages in formal education is a contentious issue in post-colonial Africa. For historical and econom-ic reasons, these are devalued in the formal education system. We ar-gue that appropriate use of indigenous knowledge/languages can em-power African students academically even in typically “Western” disci-plines, such as Computer Science. We discuss the potential role of in-digenous languages/knowledge in ICT education and then describe an intervention, supporting students from marginalised communities, at a South African University.
- Full Text:
- Date Issued: 2008
- Authors: Dalvit, Lorenzo , Murray, Sarah , Terzoli, Alfredo
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431033 , vital:72739 , https://doi.org/10.1007/978-0-387-09729-9_43
- Description: The integration of indigenous knowledge/languages in formal education is a contentious issue in post-colonial Africa. For historical and econom-ic reasons, these are devalued in the formal education system. We ar-gue that appropriate use of indigenous knowledge/languages can em-power African students academically even in typically “Western” disci-plines, such as Computer Science. We discuss the potential role of in-digenous languages/knowledge in ICT education and then describe an intervention, supporting students from marginalised communities, at a South African University.
- Full Text:
- Date Issued: 2008
The role of the judiciary in protecting the right to freedom of expression in difficult political environments: a case study of Zimbabwe
- Authors: Ndawana, Duduzile
- Date: 2008
- Subjects: Zimbabwe -- Politics and government , Mass media -- Zimbabwe -- Law and legislation , Freedom of speech -- Zimbabwe -- Law and legislation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11109 , http://hdl.handle.net/10353/99 , Zimbabwe -- Politics and government , Mass media -- Zimbabwe -- Law and legislation , Freedom of speech -- Zimbabwe -- Law and legislation
- Description: The right to freedom of expression is with no doubt one of the most important rights in all democratic societies. The southern African sub-region is however lacking when it comes to the protection of this right. There are either highly repressive laws which result in the right being practiced but to a limited extent. In other cases the media is owned by the elite in society which results in the majority not being represented in the independent media and at the same time, the public media is often abused by the governing elite. The scene is therefore that both the public media and private media are representative of the elite. The research seeks to explore the protection of human rights, particularly the right to freedom of expression in politically volatile environments. The research focuses on Zimbabwe but comparative analysis has also been drawn with other jurisdictions moreso South Africa. It is important to note that Zimbabwe has ratified both the International Covenant on Civil Political Rights and the African Charter on Human and Peoples’ rights both of which protect the right to freedom of expression. It is however not enough that states ratify international and regional instruments without domesticating the instruments at the national level. The domestication of the international and regional instruments is meant to ensure that individuals enjoy these rights. Freedom of expression is highly volatile in Zimbabwe. The legislature has been accused of taking away the right which has been granted to citizens by the Constitution through its highly repressive laws. The Access to Information and Protection of Privacy Act (AIPPA), the Public Order and Security Act (POSA), and the Official Secrets Act are some of the laws which have been put under spotlight in Zimbabwe. There is therefore a conflict between the legislature, the press and individuals in Zimbabwe. In Zimbabwe like many democratic states, there is separation of powers between the legislature, the executive, and the judiciary. The legislature is the decision making structure that enacts policies in their capacity as representatives of the people; the judiciary is the mediating body that adjudicates decisions between the organs of state as well as between those organs and individuals and the executive enforces decisions. The findings of the research are that despite the ratification of international and regional instruments dealing with the right to freedom of expression and the protection of the right to freedom of expression in the constitution, there still exist repressive laws in Zimbabwe which to a great extent limit the right to freedom of expression. These laws in light of the prevailing environment in Zimbabwe are often used to deprive citizens and journalists of information and their right to freedom of expression. The judiciary finds itself in a difficult position as the executive does not comply with its rulings. The independence of the judiciary, in light of the environment is also compromised by the threats to the judges, the appointment process and ‘gifts’ given to the judges for example, farms. The research analyses the history and theories of freedom of freedom of expression in Zimbabwe, the laws regulating the right and the case law dealing with this right. Finally there is a comparison between Zimbabwe and South Africa and conclusions and recommendations are made based on the discussion in the dissertation. Among the recommendations is that civil society should be involved in educating individuals especially journalists about the right to freedom of expression. Further, the judiciary should also take a more proactive approach in the protection of the right.
- Full Text:
- Date Issued: 2008
- Authors: Ndawana, Duduzile
- Date: 2008
- Subjects: Zimbabwe -- Politics and government , Mass media -- Zimbabwe -- Law and legislation , Freedom of speech -- Zimbabwe -- Law and legislation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11109 , http://hdl.handle.net/10353/99 , Zimbabwe -- Politics and government , Mass media -- Zimbabwe -- Law and legislation , Freedom of speech -- Zimbabwe -- Law and legislation
- Description: The right to freedom of expression is with no doubt one of the most important rights in all democratic societies. The southern African sub-region is however lacking when it comes to the protection of this right. There are either highly repressive laws which result in the right being practiced but to a limited extent. In other cases the media is owned by the elite in society which results in the majority not being represented in the independent media and at the same time, the public media is often abused by the governing elite. The scene is therefore that both the public media and private media are representative of the elite. The research seeks to explore the protection of human rights, particularly the right to freedom of expression in politically volatile environments. The research focuses on Zimbabwe but comparative analysis has also been drawn with other jurisdictions moreso South Africa. It is important to note that Zimbabwe has ratified both the International Covenant on Civil Political Rights and the African Charter on Human and Peoples’ rights both of which protect the right to freedom of expression. It is however not enough that states ratify international and regional instruments without domesticating the instruments at the national level. The domestication of the international and regional instruments is meant to ensure that individuals enjoy these rights. Freedom of expression is highly volatile in Zimbabwe. The legislature has been accused of taking away the right which has been granted to citizens by the Constitution through its highly repressive laws. The Access to Information and Protection of Privacy Act (AIPPA), the Public Order and Security Act (POSA), and the Official Secrets Act are some of the laws which have been put under spotlight in Zimbabwe. There is therefore a conflict between the legislature, the press and individuals in Zimbabwe. In Zimbabwe like many democratic states, there is separation of powers between the legislature, the executive, and the judiciary. The legislature is the decision making structure that enacts policies in their capacity as representatives of the people; the judiciary is the mediating body that adjudicates decisions between the organs of state as well as between those organs and individuals and the executive enforces decisions. The findings of the research are that despite the ratification of international and regional instruments dealing with the right to freedom of expression and the protection of the right to freedom of expression in the constitution, there still exist repressive laws in Zimbabwe which to a great extent limit the right to freedom of expression. These laws in light of the prevailing environment in Zimbabwe are often used to deprive citizens and journalists of information and their right to freedom of expression. The judiciary finds itself in a difficult position as the executive does not comply with its rulings. The independence of the judiciary, in light of the environment is also compromised by the threats to the judges, the appointment process and ‘gifts’ given to the judges for example, farms. The research analyses the history and theories of freedom of freedom of expression in Zimbabwe, the laws regulating the right and the case law dealing with this right. Finally there is a comparison between Zimbabwe and South Africa and conclusions and recommendations are made based on the discussion in the dissertation. Among the recommendations is that civil society should be involved in educating individuals especially journalists about the right to freedom of expression. Further, the judiciary should also take a more proactive approach in the protection of the right.
- Full Text:
- Date Issued: 2008
The role of the privileged in responding to poverty: perspectives emerging from the post-development debate
- Authors: Matthews, Sally
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/142476 , vital:38083 , DOI: 10.1080/01436590802201022
- Description: The debate between post-development theorists and their critics has raised several important questions, one of them being the question of how relatively privileged people may respond meaningfully to poverty while not perpetuating the flaws of past development practice. In this article I build upon the ideas of several contributors to the post-development debate in order to suggest three ways in which we who are relatively privileged may play a role in struggles against poverty. I argue that we can work to rethink the concepts informing development practice; that we may find ways to give our support to popular initiatives, and that there are aspects of our own societies which we may change in solidarity with the struggles of distant others.
- Full Text:
- Date Issued: 2008
- Authors: Matthews, Sally
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/142476 , vital:38083 , DOI: 10.1080/01436590802201022
- Description: The debate between post-development theorists and their critics has raised several important questions, one of them being the question of how relatively privileged people may respond meaningfully to poverty while not perpetuating the flaws of past development practice. In this article I build upon the ideas of several contributors to the post-development debate in order to suggest three ways in which we who are relatively privileged may play a role in struggles against poverty. I argue that we can work to rethink the concepts informing development practice; that we may find ways to give our support to popular initiatives, and that there are aspects of our own societies which we may change in solidarity with the struggles of distant others.
- Full Text:
- Date Issued: 2008
The role of the school management in addressing the problem of drug abuse in the northern areas of Port Elizabeth
- Authors: Jacobs, Lee-Ann
- Date: 2008
- Subjects: High school students -- Substance use -- South Africa -- Port Elizabeth , School management and organization -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9545 , http://hdl.handle.net/10948/675 , High school students -- Substance use -- South Africa -- Port Elizabeth , School management and organization -- South Africa -- Port Elizabeth
- Description: Drug abuse by teenagers is a problem encountered by educators in South African schools. This study focuses on the reasons for, and the consequences of teenage drug abuse in one school in the Northern Areas of Port Elizabeth. The main aim of this study was to formulate strategies which school managers can use to alleviate the problem of drug abuse among learners. A naturalistic approach was followed to conduct qualitative research. The research design used is a case study. Data-collection techniques consisted of semi-structured and unstructured interviews, observations and questionnaires. Respondents consisted of 150 learners, 5 parents, 10 educators from the school, 2 social workers and 1 auxiliary social worker, 2 priests involved in Youth Ministry, 1 adult involved in running a drug rehabilitation centre, and 1 ex-addict who is involved in arranging drug awareness campaigns and rehabilitation programs. This study found family aspects and family dynamics, personal aspects and the self-concept of the teenager, and societal or environmental aspects to be the main reasons for teenage drug abuse. Drugs have an adverse effect on the community within which the abuse is occurring. It also has a negative effect on the health, psychological state, behaviour and the family of the teenager. Strategies to alleviate the problem emphasise the role which the school can play in terms of drug education for educators, learners and parents; the role of the Government in allocating additional funds for drug education; the role which the church can play in terms of drug education and providing opportunities for positive interactions with peers; and the role which the media can play in influencing the decisions of teenagers.
- Full Text:
- Date Issued: 2008
- Authors: Jacobs, Lee-Ann
- Date: 2008
- Subjects: High school students -- Substance use -- South Africa -- Port Elizabeth , School management and organization -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9545 , http://hdl.handle.net/10948/675 , High school students -- Substance use -- South Africa -- Port Elizabeth , School management and organization -- South Africa -- Port Elizabeth
- Description: Drug abuse by teenagers is a problem encountered by educators in South African schools. This study focuses on the reasons for, and the consequences of teenage drug abuse in one school in the Northern Areas of Port Elizabeth. The main aim of this study was to formulate strategies which school managers can use to alleviate the problem of drug abuse among learners. A naturalistic approach was followed to conduct qualitative research. The research design used is a case study. Data-collection techniques consisted of semi-structured and unstructured interviews, observations and questionnaires. Respondents consisted of 150 learners, 5 parents, 10 educators from the school, 2 social workers and 1 auxiliary social worker, 2 priests involved in Youth Ministry, 1 adult involved in running a drug rehabilitation centre, and 1 ex-addict who is involved in arranging drug awareness campaigns and rehabilitation programs. This study found family aspects and family dynamics, personal aspects and the self-concept of the teenager, and societal or environmental aspects to be the main reasons for teenage drug abuse. Drugs have an adverse effect on the community within which the abuse is occurring. It also has a negative effect on the health, psychological state, behaviour and the family of the teenager. Strategies to alleviate the problem emphasise the role which the school can play in terms of drug education for educators, learners and parents; the role of the Government in allocating additional funds for drug education; the role which the church can play in terms of drug education and providing opportunities for positive interactions with peers; and the role which the media can play in influencing the decisions of teenagers.
- Full Text:
- Date Issued: 2008
The role of the school management in the promotion of parental involvement in township schools in George
- Authors: Majola, Joyce Themba
- Date: 2008
- Subjects: Education -- Parent participation -- South Africa -- George , School management and organization -- Parent participation -- South Africa -- George , Parent-teacher relationships -- South Africa -- George
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9541 , http://hdl.handle.net/10948/680 , Education -- Parent participation -- South Africa -- George , School management and organization -- Parent participation -- South Africa -- George , Parent-teacher relationships -- South Africa -- George
- Description: The law relating to, and having an impact on, parental involvement has increased in quantity and complexity in the last couple of decades. It is therefore overwhelming to find out that parents are still taking a back seat as far as parental involvement is concerned in schools. Parents and educators have to work together towards one common goal, to assist learners in their journey through adulthood. The focus of the research was the role of the school management team in promoting parental involvement in the education of their children; how the school’s climate can be changed and be made accessible to parents. Educators must be taught how to invite and involve parents in the school’s activities. Parents have to be empowered as effective participants in school activities. Parents and educators should work together in solving their own problems and to overcome numerous challenges in their schools. Parents and educators have to develop trust and be able to remove the obstacles, various elements and factors that prevent them from working together to develop the schools as powerful working organisations. Parents and educators have to collaborate in building their educational objectives. The research attempted to determine all the possible causes of the non-involvement of parents in the education of their children. The researcher also believed that if the problem of non-involvement of parents can be solved, the learner’s academic achievements can improve drastically. The findings and recommendations indicate that parental involvement remains a crucial point in all the efforts to enhance school effectiveness. The researcher in the study also investigated the assumption that parents from the townships do not take part in their children’s activities because they don’t care.
- Full Text:
- Date Issued: 2008
- Authors: Majola, Joyce Themba
- Date: 2008
- Subjects: Education -- Parent participation -- South Africa -- George , School management and organization -- Parent participation -- South Africa -- George , Parent-teacher relationships -- South Africa -- George
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9541 , http://hdl.handle.net/10948/680 , Education -- Parent participation -- South Africa -- George , School management and organization -- Parent participation -- South Africa -- George , Parent-teacher relationships -- South Africa -- George
- Description: The law relating to, and having an impact on, parental involvement has increased in quantity and complexity in the last couple of decades. It is therefore overwhelming to find out that parents are still taking a back seat as far as parental involvement is concerned in schools. Parents and educators have to work together towards one common goal, to assist learners in their journey through adulthood. The focus of the research was the role of the school management team in promoting parental involvement in the education of their children; how the school’s climate can be changed and be made accessible to parents. Educators must be taught how to invite and involve parents in the school’s activities. Parents have to be empowered as effective participants in school activities. Parents and educators should work together in solving their own problems and to overcome numerous challenges in their schools. Parents and educators have to develop trust and be able to remove the obstacles, various elements and factors that prevent them from working together to develop the schools as powerful working organisations. Parents and educators have to collaborate in building their educational objectives. The research attempted to determine all the possible causes of the non-involvement of parents in the education of their children. The researcher also believed that if the problem of non-involvement of parents can be solved, the learner’s academic achievements can improve drastically. The findings and recommendations indicate that parental involvement remains a crucial point in all the efforts to enhance school effectiveness. The researcher in the study also investigated the assumption that parents from the townships do not take part in their children’s activities because they don’t care.
- Full Text:
- Date Issued: 2008
The role of values in educational leadership: an interpretive study
- Authors: Drake, Melanie Lee
- Date: 2008
- Subjects: Educational leadership -- South Africa Leadership -- South Africa Values -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1756 , http://hdl.handle.net/10962/d1003640
- Description: This study set out to investigate the role of values in educational leadership. The renewed interest in values in both educational and corporate environments in South Africa places new pressures on members in leadership positions especially in school life. Schools are described as the ‘nurseries’ of values. The understanding of the abstract nature of values, as well as instrumentalising and implementing values in vision statements and organisational life, poses challenges to present and future school leaders. This study, based in the interpretive paradigm, is an in-depth investigation into the role of values at a former model C primary school in the Eastern Cape. Through the use of observations, document analysis, focus groups and interviews as data collection tools, this research highlights the importance of values in school leadership and how this impacts the life of the school leader. This case-study research combines theoretical and contextual frameworks to question the nature of values in leadership and uses the real-life experiences of these school leaders to resonate with current understandings of values in leadership and organisational culture. The importance of understanding these complexities in the lives and experiences of these school leaders cannot be underestimated. My findings highlight the tensions between leading successful schools (task/person efficiency) and remaining congruent with the need for leadership for social justice in post-apartheid educational institutions. The uniqueness of the school environment (‘families’ and ‘communities’) is also featured and resonates with previous literature. Through the lens of emerging leadership trends, we discover these school leaders’ understandings of values in their daily lives: they do what they are and this is reflected in this school’s unique organisational culture, which could be said to ‘transcend’ present leaders’ influence. Finally I propose that further research is necessary in order to broaden our understanding of the unique role of values in educational leadership in South Africa.
- Full Text:
- Date Issued: 2008
- Authors: Drake, Melanie Lee
- Date: 2008
- Subjects: Educational leadership -- South Africa Leadership -- South Africa Values -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1756 , http://hdl.handle.net/10962/d1003640
- Description: This study set out to investigate the role of values in educational leadership. The renewed interest in values in both educational and corporate environments in South Africa places new pressures on members in leadership positions especially in school life. Schools are described as the ‘nurseries’ of values. The understanding of the abstract nature of values, as well as instrumentalising and implementing values in vision statements and organisational life, poses challenges to present and future school leaders. This study, based in the interpretive paradigm, is an in-depth investigation into the role of values at a former model C primary school in the Eastern Cape. Through the use of observations, document analysis, focus groups and interviews as data collection tools, this research highlights the importance of values in school leadership and how this impacts the life of the school leader. This case-study research combines theoretical and contextual frameworks to question the nature of values in leadership and uses the real-life experiences of these school leaders to resonate with current understandings of values in leadership and organisational culture. The importance of understanding these complexities in the lives and experiences of these school leaders cannot be underestimated. My findings highlight the tensions between leading successful schools (task/person efficiency) and remaining congruent with the need for leadership for social justice in post-apartheid educational institutions. The uniqueness of the school environment (‘families’ and ‘communities’) is also featured and resonates with previous literature. Through the lens of emerging leadership trends, we discover these school leaders’ understandings of values in their daily lives: they do what they are and this is reflected in this school’s unique organisational culture, which could be said to ‘transcend’ present leaders’ influence. Finally I propose that further research is necessary in order to broaden our understanding of the unique role of values in educational leadership in South Africa.
- Full Text:
- Date Issued: 2008
The Sacred Door and other Stories: Cameroon Folktales of the Beba (Makuchi)
- Authors: Kaschula, Russell H
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/175177 , vital:42550 , https://doi.org/10.17159/2309-9070/tvl.v.45i2.4743
- Description: In The Sacred Door and Other Stories: Cameroon Folktales of the Beba, Makuchi has collected thirty-three folktales of the Beba people. These stories are presented in English only. The book contains a foreword by well-known oral literature scholar, Isidore Okpewho and a preface by the author. In the foreword, Okpewho states that:“Tales like these need to be retold again and again, because the lessons they yield belong not merely to a long-forgotten historical or so-called primitive past but very much to the present times in which we live”(xi). The book therefore represents a sense of continuity between past and present. Although the tales may no longer be told in the same way that they were many years ago, the messages contained in the tales remain as relevant today as they did in the past.
- Full Text:
- Date Issued: 2008
- Authors: Kaschula, Russell H
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/175177 , vital:42550 , https://doi.org/10.17159/2309-9070/tvl.v.45i2.4743
- Description: In The Sacred Door and Other Stories: Cameroon Folktales of the Beba, Makuchi has collected thirty-three folktales of the Beba people. These stories are presented in English only. The book contains a foreword by well-known oral literature scholar, Isidore Okpewho and a preface by the author. In the foreword, Okpewho states that:“Tales like these need to be retold again and again, because the lessons they yield belong not merely to a long-forgotten historical or so-called primitive past but very much to the present times in which we live”(xi). The book therefore represents a sense of continuity between past and present. Although the tales may no longer be told in the same way that they were many years ago, the messages contained in the tales remain as relevant today as they did in the past.
- Full Text:
- Date Issued: 2008
The separation of platinum and gold from an industrial feed solution
- Authors: Louw, Talana
- Date: 2008
- Subjects: Platinum -- Separation , Gold , Separation -- Technology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10400 , http://hdl.handle.net/10948/731 , Platinum -- Separation , Gold , Separation -- Technology
- Description: In this thesis, the aim was to develop resins which are platinum and gold specific to be utilized for the early removal of these metals from the industrial feed. Efforts were therefore directed towards the synthesis of silica based resins with active centra which were designed for platinum and gold specificity respectively. The large chlorometallate ions in the feed stream were characterized in terms of physical parameters relevant to phase distribution namely distortability (RD), charge density, softness (σ) etc. Matching cations for each of the types were investigated. In order to attempt the design of platinum specific resins different structural amines were used to aminate the silicone precursor and subsequently to fix these onto the silica framework. Two different solvents i.e. alcohol and dmf were used for this process, resulting in two sets of resins with different properties. For gold specific resins, various polyethers were attached to a different type of silicone precursor, which was attached to the silica framework. The design was based on previous experience with these ions with reference to their behaviour towards different types of cations. The platinum species PtCl6 2- and PtCl4 2-, the gold species AuCl4 -, as well as the most important contaminants in the feed stream were typified bearing in mind size, charge, charge density and distortability. Different types of cationic centra having differences in charge density, stereochemical crowding and extent of hydrophobicity were synthesized and tested both as solvent extractants (where possible) and silica based resins. The results indicated that partly screened secondary ammonium cationic resin species, which could be regarded as “intermediate”, proved to be satisfactory both in their high percentage extraction for PtCl4 2- and rejection of contaminants like chlororhodates, chloroiridates(III) and FeCl4 -. It was, however, necessary to work at a redox potential where iridium(IV) in the form of IrCl6 2- is absent. Various 2-aminoalkane resins were prepared with variation in the length of alkane group and synthesized in the two different solvents. The latter resulted in two sets of resins with different compactness also having significantly different properties with reference to platinum specificity, HCl effect and stripping potential. The 2- aminobutane and 2-aminoheptane resins both proved to be very satisfactory platinum specific resins with respect to selectivity, platinum capacity and stripping potential. The various physical parameters could be utilized to accommodate the chemical behaviour. To obtain gold specific resins, experiments were performed with resins having oxygen-donor atoms which can readily be protonated to form onium type cations for example amides and ether oxygen atoms. In the case of the latter, various polyethers with a different number of ether groups (polyether groups linked by ethylene and propylene groups) and variations of hydrophobicity (by substitution) have also been studied. Linked to the polyether groups were alkane and aryl groups. Those having 8 to 10 ether groups and aromatic tail ends proved to be moderately successful in terms of gold capacity and sharp breakthrough curves of their columns, however, platinum could not be very effectively rejected.
- Full Text:
- Date Issued: 2008
- Authors: Louw, Talana
- Date: 2008
- Subjects: Platinum -- Separation , Gold , Separation -- Technology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10400 , http://hdl.handle.net/10948/731 , Platinum -- Separation , Gold , Separation -- Technology
- Description: In this thesis, the aim was to develop resins which are platinum and gold specific to be utilized for the early removal of these metals from the industrial feed. Efforts were therefore directed towards the synthesis of silica based resins with active centra which were designed for platinum and gold specificity respectively. The large chlorometallate ions in the feed stream were characterized in terms of physical parameters relevant to phase distribution namely distortability (RD), charge density, softness (σ) etc. Matching cations for each of the types were investigated. In order to attempt the design of platinum specific resins different structural amines were used to aminate the silicone precursor and subsequently to fix these onto the silica framework. Two different solvents i.e. alcohol and dmf were used for this process, resulting in two sets of resins with different properties. For gold specific resins, various polyethers were attached to a different type of silicone precursor, which was attached to the silica framework. The design was based on previous experience with these ions with reference to their behaviour towards different types of cations. The platinum species PtCl6 2- and PtCl4 2-, the gold species AuCl4 -, as well as the most important contaminants in the feed stream were typified bearing in mind size, charge, charge density and distortability. Different types of cationic centra having differences in charge density, stereochemical crowding and extent of hydrophobicity were synthesized and tested both as solvent extractants (where possible) and silica based resins. The results indicated that partly screened secondary ammonium cationic resin species, which could be regarded as “intermediate”, proved to be satisfactory both in their high percentage extraction for PtCl4 2- and rejection of contaminants like chlororhodates, chloroiridates(III) and FeCl4 -. It was, however, necessary to work at a redox potential where iridium(IV) in the form of IrCl6 2- is absent. Various 2-aminoalkane resins were prepared with variation in the length of alkane group and synthesized in the two different solvents. The latter resulted in two sets of resins with different compactness also having significantly different properties with reference to platinum specificity, HCl effect and stripping potential. The 2- aminobutane and 2-aminoheptane resins both proved to be very satisfactory platinum specific resins with respect to selectivity, platinum capacity and stripping potential. The various physical parameters could be utilized to accommodate the chemical behaviour. To obtain gold specific resins, experiments were performed with resins having oxygen-donor atoms which can readily be protonated to form onium type cations for example amides and ether oxygen atoms. In the case of the latter, various polyethers with a different number of ether groups (polyether groups linked by ethylene and propylene groups) and variations of hydrophobicity (by substitution) have also been studied. Linked to the polyether groups were alkane and aryl groups. Those having 8 to 10 ether groups and aromatic tail ends proved to be moderately successful in terms of gold capacity and sharp breakthrough curves of their columns, however, platinum could not be very effectively rejected.
- Full Text:
- Date Issued: 2008
The snake family Psammophiidae (Reptilia: Serpentes): phylogenetics and species delimitation in the African sand snakes (Psammophis Boie, 1825) and allied genera
- Kelly, Christopher M R, Barker, Nigel P, Villet, Martin H, Broadley, Donald G, Branch, William R
- Authors: Kelly, Christopher M R , Barker, Nigel P , Villet, Martin H , Broadley, Donald G , Branch, William R
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6522 , http://hdl.handle.net/10962/d1005953
- Description: This study constitutes the first evolutionary investigation of the snake family Psammophiidae—the most widespread, most clearly defined, yet perhaps the taxonomically most problematic of Africa's familylevel snake lineages. Little is known of psammophiid evolutionary relationships, and the type genus Psammophis is one of the largest and taxonomically most complex of the African snake genera. Our aims were to reconstruct psammophiid phylogenetic relationships and to improve characterisation of species boundaries in problematic Psammophis species complexes. We used approximately 2500 bases of DNA sequence from the mitochondrial and nuclear genomes, and 114 terminals covering all psammophiid genera and incorporating approximately 75% of recognised species and subspecies. Phylogenetic reconstructions were conducted primarily in a Bayesian framework and we used the Wiens/Penkrot protocol to aid species delimitation. Rhamphiophis is diphyletic, with Rhamphiophis acutus emerging sister to Psammophylax. Consequently we transfer the three subspecies of Rhamphiophis acutus to the genus Psammophylax. The monotypic genus Dipsina is sister to Psammophis. The two species of Dromophis occupy divergent positions deeply nested within Psammophis, and we therefore relegate Dromophis to the synonymy of Psammophis. Our results allow division of the taxonomically problematic Psammophis 'sibilans' species complex into two monophyletic entities, provisionally named the 'phillipsii' and 'subtaeniatus' complexes. Within these two clades we found support for the status of many existing species, but not for a distinction between P.p. phillipsii and P. mossambicus. Additionally, P. cf. phillipsii occidentalis deserves species status as the sister taxon of P. brevirostris.
- Full Text:
- Date Issued: 2008
- Authors: Kelly, Christopher M R , Barker, Nigel P , Villet, Martin H , Broadley, Donald G , Branch, William R
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6522 , http://hdl.handle.net/10962/d1005953
- Description: This study constitutes the first evolutionary investigation of the snake family Psammophiidae—the most widespread, most clearly defined, yet perhaps the taxonomically most problematic of Africa's familylevel snake lineages. Little is known of psammophiid evolutionary relationships, and the type genus Psammophis is one of the largest and taxonomically most complex of the African snake genera. Our aims were to reconstruct psammophiid phylogenetic relationships and to improve characterisation of species boundaries in problematic Psammophis species complexes. We used approximately 2500 bases of DNA sequence from the mitochondrial and nuclear genomes, and 114 terminals covering all psammophiid genera and incorporating approximately 75% of recognised species and subspecies. Phylogenetic reconstructions were conducted primarily in a Bayesian framework and we used the Wiens/Penkrot protocol to aid species delimitation. Rhamphiophis is diphyletic, with Rhamphiophis acutus emerging sister to Psammophylax. Consequently we transfer the three subspecies of Rhamphiophis acutus to the genus Psammophylax. The monotypic genus Dipsina is sister to Psammophis. The two species of Dromophis occupy divergent positions deeply nested within Psammophis, and we therefore relegate Dromophis to the synonymy of Psammophis. Our results allow division of the taxonomically problematic Psammophis 'sibilans' species complex into two monophyletic entities, provisionally named the 'phillipsii' and 'subtaeniatus' complexes. Within these two clades we found support for the status of many existing species, but not for a distinction between P.p. phillipsii and P. mossambicus. Additionally, P. cf. phillipsii occidentalis deserves species status as the sister taxon of P. brevirostris.
- Full Text:
- Date Issued: 2008
The solvent-free approach versus the use of ionic liquids in the synthesis of ferrocenes
- Authors: Elago, Elago R T
- Date: 2008
- Subjects: Ferrocene , Inorganic compounds -- Synthesis , Ionic solutions , Solvents
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10396 , http://hdl.handle.net/10948/853 , Ferrocene , Inorganic compounds -- Synthesis , Ionic solutions , Solvents
- Description: The philosophy of green chemistry has seen much development in the past decade. The use of environmentally benign solvents is amongst the areas of green chemistry that have received the most attention. In this context, imidazolium ionic liquids have been widely reported to offer high product yields, fast reaction rates, excellent selectivity and generally mild working conditions, when used as reaction media. In addition, concerns about costs of solvents and the long-term environmental impact that can potentially result when solvents are discarded after their use have led to focused investigations into solvent-free procedures, as reported in recent literature. We have set out to explore the extent to which these advantages could be realized within our research. Non-volatile, non-flammable imidazolium ionic liquids [bmim][I], [bmim][BF4] and [bmim][PF6] were used as green solvents in ferrocene chemistry. Ferrocenoate esters were synthesised efficiently by the respective DCC/DMAP-promoted reactions of ferrocenecarboxylic acid and substituted benzoic acids or, alternatively, the DMAP-promoted reactions of ferrocenoyl fluoride with a range of substituted phenols in [bmim][BF4] and [bmim][PF6]. High yields and short reaction times were achieved. In addition, the ionic liquid was reused several times without a reduction in product yields. Under solvent-free conditions, DCC/DMAP-promoted reactions provided high yields within 3 min of reaction. The possible rearrangement of one of the intermediates in these reactions was modelled theoretically using density function theory (DFT) at the B3LYP/6-31G* level of approximation. Catalyst-free esterification was achieved by the application of microwave radiation to the reaction of ferrocenoyl fluoride and a range of substituted phenols. All the reactions were complete after 1 min of irradiation and products were isolated in high yield. DPAT, HfCl4, Sc(OTf)3 and Al(OTf)3 were screened as catalysts for esterification in [bmim][BF4] and under solvent-free conditions at various temperatures. All attempts at esterification of ferrocenecarboxylic acid with alcohols and phenols were unsuccessful. The Suzuki cross-coupling reaction was carried out in [bmim][BF4]. The isolated yields are, however, poor and suffer from poor reproducibility with different batches of [bmim][BF4] used.
- Full Text:
- Date Issued: 2008
- Authors: Elago, Elago R T
- Date: 2008
- Subjects: Ferrocene , Inorganic compounds -- Synthesis , Ionic solutions , Solvents
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10396 , http://hdl.handle.net/10948/853 , Ferrocene , Inorganic compounds -- Synthesis , Ionic solutions , Solvents
- Description: The philosophy of green chemistry has seen much development in the past decade. The use of environmentally benign solvents is amongst the areas of green chemistry that have received the most attention. In this context, imidazolium ionic liquids have been widely reported to offer high product yields, fast reaction rates, excellent selectivity and generally mild working conditions, when used as reaction media. In addition, concerns about costs of solvents and the long-term environmental impact that can potentially result when solvents are discarded after their use have led to focused investigations into solvent-free procedures, as reported in recent literature. We have set out to explore the extent to which these advantages could be realized within our research. Non-volatile, non-flammable imidazolium ionic liquids [bmim][I], [bmim][BF4] and [bmim][PF6] were used as green solvents in ferrocene chemistry. Ferrocenoate esters were synthesised efficiently by the respective DCC/DMAP-promoted reactions of ferrocenecarboxylic acid and substituted benzoic acids or, alternatively, the DMAP-promoted reactions of ferrocenoyl fluoride with a range of substituted phenols in [bmim][BF4] and [bmim][PF6]. High yields and short reaction times were achieved. In addition, the ionic liquid was reused several times without a reduction in product yields. Under solvent-free conditions, DCC/DMAP-promoted reactions provided high yields within 3 min of reaction. The possible rearrangement of one of the intermediates in these reactions was modelled theoretically using density function theory (DFT) at the B3LYP/6-31G* level of approximation. Catalyst-free esterification was achieved by the application of microwave radiation to the reaction of ferrocenoyl fluoride and a range of substituted phenols. All the reactions were complete after 1 min of irradiation and products were isolated in high yield. DPAT, HfCl4, Sc(OTf)3 and Al(OTf)3 were screened as catalysts for esterification in [bmim][BF4] and under solvent-free conditions at various temperatures. All attempts at esterification of ferrocenecarboxylic acid with alcohols and phenols were unsuccessful. The Suzuki cross-coupling reaction was carried out in [bmim][BF4]. The isolated yields are, however, poor and suffer from poor reproducibility with different batches of [bmim][BF4] used.
- Full Text:
- Date Issued: 2008
The Southern African Development Community's attraction to foreign direct investment
- Authors: Botha, Richard Kruger
- Date: 2008
- Subjects: Southern African Development Community , Africa, Southern -- Foreign economic relations , Africa, Southern -- Economic integration , Africa, Southern -- Economic conditions
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8716 , http://hdl.handle.net/10948/926 , Southern African Development Community , Africa, Southern -- Foreign economic relations , Africa, Southern -- Economic integration , Africa, Southern -- Economic conditions
- Description: In order to assess the question as to whether the Southern African Development Community in principle attracts foreign direct investment, literature and data have been cited that compared the economic profiles and relative privatisation programs of member states of the Southern African Development Community with relative high inflows of foreign direct investment with the economic profiles and relative privatisation programs of member states with relative low inflows of foreign direct investment. Qualitative research has been conducted, and the author is of opinion that generally the member states with relative high foreign direct investment inflows had economic profiles and relative privatisation programs that encouraged foreign direct investment, and member states with relative low foreign direct investment inflows had economic profiles and relative privatisation programs that deterred foreign direct investment inflows. From the above the author has inferred that the Southern African Development Community in principle attracted foreign direct investment, but not to its full potential. The reason may be that although the member states’ economic profiles are favourable for foreign direct investment, their economic growths tend to fluctuate, and the future economic profiles are therefore unpredictable. With the above in mind this mini-treatise aims to address the question as to what steps the governments of the Southern African Development Community’s member states could follow in order to attract foreign direct investment. iii The author is of opinion that the member states should endeavour to maintain an annual average economic growth rate, and that the governments continue to engage into privatisation programs in order to encourage foreign direct investment.
- Full Text:
- Date Issued: 2008
- Authors: Botha, Richard Kruger
- Date: 2008
- Subjects: Southern African Development Community , Africa, Southern -- Foreign economic relations , Africa, Southern -- Economic integration , Africa, Southern -- Economic conditions
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8716 , http://hdl.handle.net/10948/926 , Southern African Development Community , Africa, Southern -- Foreign economic relations , Africa, Southern -- Economic integration , Africa, Southern -- Economic conditions
- Description: In order to assess the question as to whether the Southern African Development Community in principle attracts foreign direct investment, literature and data have been cited that compared the economic profiles and relative privatisation programs of member states of the Southern African Development Community with relative high inflows of foreign direct investment with the economic profiles and relative privatisation programs of member states with relative low inflows of foreign direct investment. Qualitative research has been conducted, and the author is of opinion that generally the member states with relative high foreign direct investment inflows had economic profiles and relative privatisation programs that encouraged foreign direct investment, and member states with relative low foreign direct investment inflows had economic profiles and relative privatisation programs that deterred foreign direct investment inflows. From the above the author has inferred that the Southern African Development Community in principle attracted foreign direct investment, but not to its full potential. The reason may be that although the member states’ economic profiles are favourable for foreign direct investment, their economic growths tend to fluctuate, and the future economic profiles are therefore unpredictable. With the above in mind this mini-treatise aims to address the question as to what steps the governments of the Southern African Development Community’s member states could follow in order to attract foreign direct investment. iii The author is of opinion that the member states should endeavour to maintain an annual average economic growth rate, and that the governments continue to engage into privatisation programs in order to encourage foreign direct investment.
- Full Text:
- Date Issued: 2008
The status and prognosis of the smoothhound shark (mustelus mustelus) fishery in the Southeastern and Southwestern Cape coasts, South Africa
- Authors: Da Silva, Charlene
- Date: 2008
- Subjects: Osteichthyes -- South Africa Mustelus -- South Africa Sharks -- South Africa Fishery management -- South Africa Fisheries -- South Africa Chondrichthyes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5200 , http://hdl.handle.net/10962/d1003287
- Description: Global trends in commercially valuable teleost fisheries point to substantial deterioration in population size, offering limited potential for increased harvests. Consequently a shift in focus towards alternative fisheries has increased fishing effort towards targeting chondrichthyans as a possible solution to meet global demands. The life-history traits of chondrichthyans make them poor candidates for resolving economic and nutritional security as these make them particularly vulnerable to anthromorphic influences. Current fisheries management approaches based on centralized government intervention have proved inadequate. This failure of current management approaches is often linked with poor co-operation by industry with government when collecting fishery-dependent data. As management decisions are based on quantitative estimates from fishery assessment modes data collected are often of poor quality. Co-management with its implied power-sharing arrangement between government and fishing communities has been proposed as a more realistic alternative. The motivation within industry to collect high quality data can only be created with a feeling of ownership. The decline in linefish species in South Africa has led to increased exploitation of demersal sharks such as Mustelus mustelus. Their status as one of the target and by-catch species of South Africa's shark fisheries necessitated resource assessment. Age, growth, maturity and mortality calculations for M mustelus were made from data collected from 1983-2006. The maximum observed age for M mustelus was 25 years. Estimated von Bertalanffy growth parameters from observed length-at-age for combined sexes, females and males were L∞ = 1946.16 mm TL, K = 0.08 year⁻' , to = -3.63 year⁻'; L∞ = 2202.21mm, K = 0.05 year⁻', to = 4.67 years; and L∞ = 1713.19 mm TL, K = 0.08 year⁻' and to = -4.36 years, respectively. Instantaneous total mortality (Z) was estimated at 0.16 y⁻', whilst natural mortality (M) for M mustelus was estimated at 0.05 y⁻'. The age and length at 50% maturity was determined for combined sexes, females and males at 1216 mm TL corresponding to an age of 9.93 years, 1234 mm (TL) and 10.75 years, and 1106 mm TL and 9.1 years respectively. The smoothhound shark resource off the south-eastern and south-western Cape coast was assessed by three dynamic pool models; yield per recruit, spawner biomass per recruit and an extended yield and spawner biomass per recruit. Due to the longevity of elasmobranches the per-recruit model was extended over a 20 year time-frame to simulate resource responses to management options. Fo.1 was estimated as 0.034 year⁻' and F MAX was estimated as 0.045 year⁻'. FsB50 was estimated as 0.031. The extended per-recruit model tested the outcome of different management scenarios, Size and effort control showed the least probability of pristine biomass falling below 20% of current levels in 20 years (where selectivity was set at 3 years). The replacement yield model showed that the average catches over the past decade are 2.5 times higher than the replacement yield is on the South Coast and 1.30 on the West Coast. A more realistic level optimising yield would be at 0.05 with a selection pattern at 3 years, where the probability of the biomass falling to below 20% of pristine pre-exploited levels in twenty years becomes negligible. A comparison of the models showed that current catches need to be halved for exploitation of smoothhound sharks to be sustainable. The results of this study indicate a need for a management intervention for M mustelus in South Africa with regards to potential overexploitation and collection of quality data for further assessments. A demersal identification key was developed as part of this study, which should aid monitoring officials in accurately identifying shark logs for collecting data. This study showed how adopting a management plan with the inclusion of comanagement concepts would improve the quality of data collected and increase monitoring of fishing activities. The inclusion of co-management is possible due to the unique bottle neck created by few demersal shark processing facilities actively exporting shark. A fishery management plan was compiled proposing several management options including size and effort controls.
- Full Text:
- Date Issued: 2008
- Authors: Da Silva, Charlene
- Date: 2008
- Subjects: Osteichthyes -- South Africa Mustelus -- South Africa Sharks -- South Africa Fishery management -- South Africa Fisheries -- South Africa Chondrichthyes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5200 , http://hdl.handle.net/10962/d1003287
- Description: Global trends in commercially valuable teleost fisheries point to substantial deterioration in population size, offering limited potential for increased harvests. Consequently a shift in focus towards alternative fisheries has increased fishing effort towards targeting chondrichthyans as a possible solution to meet global demands. The life-history traits of chondrichthyans make them poor candidates for resolving economic and nutritional security as these make them particularly vulnerable to anthromorphic influences. Current fisheries management approaches based on centralized government intervention have proved inadequate. This failure of current management approaches is often linked with poor co-operation by industry with government when collecting fishery-dependent data. As management decisions are based on quantitative estimates from fishery assessment modes data collected are often of poor quality. Co-management with its implied power-sharing arrangement between government and fishing communities has been proposed as a more realistic alternative. The motivation within industry to collect high quality data can only be created with a feeling of ownership. The decline in linefish species in South Africa has led to increased exploitation of demersal sharks such as Mustelus mustelus. Their status as one of the target and by-catch species of South Africa's shark fisheries necessitated resource assessment. Age, growth, maturity and mortality calculations for M mustelus were made from data collected from 1983-2006. The maximum observed age for M mustelus was 25 years. Estimated von Bertalanffy growth parameters from observed length-at-age for combined sexes, females and males were L∞ = 1946.16 mm TL, K = 0.08 year⁻' , to = -3.63 year⁻'; L∞ = 2202.21mm, K = 0.05 year⁻', to = 4.67 years; and L∞ = 1713.19 mm TL, K = 0.08 year⁻' and to = -4.36 years, respectively. Instantaneous total mortality (Z) was estimated at 0.16 y⁻', whilst natural mortality (M) for M mustelus was estimated at 0.05 y⁻'. The age and length at 50% maturity was determined for combined sexes, females and males at 1216 mm TL corresponding to an age of 9.93 years, 1234 mm (TL) and 10.75 years, and 1106 mm TL and 9.1 years respectively. The smoothhound shark resource off the south-eastern and south-western Cape coast was assessed by three dynamic pool models; yield per recruit, spawner biomass per recruit and an extended yield and spawner biomass per recruit. Due to the longevity of elasmobranches the per-recruit model was extended over a 20 year time-frame to simulate resource responses to management options. Fo.1 was estimated as 0.034 year⁻' and F MAX was estimated as 0.045 year⁻'. FsB50 was estimated as 0.031. The extended per-recruit model tested the outcome of different management scenarios, Size and effort control showed the least probability of pristine biomass falling below 20% of current levels in 20 years (where selectivity was set at 3 years). The replacement yield model showed that the average catches over the past decade are 2.5 times higher than the replacement yield is on the South Coast and 1.30 on the West Coast. A more realistic level optimising yield would be at 0.05 with a selection pattern at 3 years, where the probability of the biomass falling to below 20% of pristine pre-exploited levels in twenty years becomes negligible. A comparison of the models showed that current catches need to be halved for exploitation of smoothhound sharks to be sustainable. The results of this study indicate a need for a management intervention for M mustelus in South Africa with regards to potential overexploitation and collection of quality data for further assessments. A demersal identification key was developed as part of this study, which should aid monitoring officials in accurately identifying shark logs for collecting data. This study showed how adopting a management plan with the inclusion of comanagement concepts would improve the quality of data collected and increase monitoring of fishing activities. The inclusion of co-management is possible due to the unique bottle neck created by few demersal shark processing facilities actively exporting shark. A fishery management plan was compiled proposing several management options including size and effort controls.
- Full Text:
- Date Issued: 2008
The synthesis and electrochemical behaviour of water soluble manganese phthalocyanines: Anion radical versus Mn(I) species
- Sehlotho, Nthapo, Durmuş, Mahmut, Ahsen, N, Nyokong, Tebello
- Authors: Sehlotho, Nthapo , Durmuş, Mahmut , Ahsen, N , Nyokong, Tebello
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6596 , http://hdl.handle.net/10962/d1004345
- Description: The following MnPc derivatives were synthesized: 1,(4)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (5a), quaternized 1,(4)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (5b), 2,(3)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (6a) and quaternized 2,(3)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH)(6b). Spectro-electrochemistry shows that the reduction of Mn(II)Pc to Mn(I)Pc occurs only when the complexes are in their quaternized form (5b and 6b). The reduction (to Mn(I)Pc(−2)) of the quaternized form occurs at a lower potential than that (to Mn(II)Pc(−3)) of the unquaternized form. This observation suggests that metal reduction (to Mn(I)Pc(−2)) versus ligand reduction (to Mn(II)Pc(−3)) in Mn(II)Pc complexes depends on the nature of the ring substituents.
- Full Text:
- Date Issued: 2008
- Authors: Sehlotho, Nthapo , Durmuş, Mahmut , Ahsen, N , Nyokong, Tebello
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6596 , http://hdl.handle.net/10962/d1004345
- Description: The following MnPc derivatives were synthesized: 1,(4)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (5a), quaternized 1,(4)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (5b), 2,(3)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH) (6a) and quaternized 2,(3)-tetra-(2-mercaptopyridine) phthalocyaninato manganese(III)(OH)(6b). Spectro-electrochemistry shows that the reduction of Mn(II)Pc to Mn(I)Pc occurs only when the complexes are in their quaternized form (5b and 6b). The reduction (to Mn(I)Pc(−2)) of the quaternized form occurs at a lower potential than that (to Mn(II)Pc(−3)) of the unquaternized form. This observation suggests that metal reduction (to Mn(I)Pc(−2)) versus ligand reduction (to Mn(II)Pc(−3)) in Mn(II)Pc complexes depends on the nature of the ring substituents.
- Full Text:
- Date Issued: 2008
The tax implications of a private equity buy-out : a case study of the Brait-Shoprite buy-out
- Authors: Mawire, Patrick N
- Date: 2008
- Subjects: South African Revenue Service , Consolidation and merger of corporations -- Finance , Taxation -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8959 , http://hdl.handle.net/10948/803 , South African Revenue Service , Consolidation and merger of corporations -- Finance , Taxation -- Law and legislation -- South Africa
- Description: This treatise examines the history of private equity as a context in which to understand its role in the economy and specifically, the background for the high profile leveraged buy-outs that have been entered into in the past year. The treatise then focuses specifically on the Brait-Shoprite buy-out, examining its structure and the tax implications. The treatise then reviews the reaction of the South African Revenue Authority (“SARS”) to the buy-out and evaluates whether it was the best approach that could have been taken under the circumstances. As a result of the research, the following conclusions have been reached: Private equity transactions Private equity transactions have a role to play in the business world despite the apprehensions of tax authorities. The perception that these transactions are tax driven as part of an avoidance scheme is not justified. Structure of the Shoprite buy-out transaction: The Shoprite buy-out transaction was structured to obtain deduction for interest. The transaction was also structured to utilise the relief provisions of Part II of Chapter II (Special Provisions Relating to Companies) of the Income Tax Act no.58 of 1962, as amended (“the Act”). The relief was for capital gains tax (“CGT”) on disposal of the Shoprite assets. Finally, the transaction was designed to allow the existing shareholders to exit their investments free of Secondary Tax on Companies (“STC”). The reaction of SARS to the Shoprite buy-out transaction Whereas SARS may have been justified in questioning the structure and its impact on fiscal revenue, the response in the form of withdrawing STC relief from amalgamation transactions in section 44 was not in the best interest of a stable tax system and the majority of tax payers who are not misusing or abusing loopholes in the income tax legislation. It may have been possible for SARS to attack the structure based on the General Anti-Avoidance Rule (GAAR) in part IIA of the Chapter III of the Act.
- Full Text:
- Date Issued: 2008
- Authors: Mawire, Patrick N
- Date: 2008
- Subjects: South African Revenue Service , Consolidation and merger of corporations -- Finance , Taxation -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8959 , http://hdl.handle.net/10948/803 , South African Revenue Service , Consolidation and merger of corporations -- Finance , Taxation -- Law and legislation -- South Africa
- Description: This treatise examines the history of private equity as a context in which to understand its role in the economy and specifically, the background for the high profile leveraged buy-outs that have been entered into in the past year. The treatise then focuses specifically on the Brait-Shoprite buy-out, examining its structure and the tax implications. The treatise then reviews the reaction of the South African Revenue Authority (“SARS”) to the buy-out and evaluates whether it was the best approach that could have been taken under the circumstances. As a result of the research, the following conclusions have been reached: Private equity transactions Private equity transactions have a role to play in the business world despite the apprehensions of tax authorities. The perception that these transactions are tax driven as part of an avoidance scheme is not justified. Structure of the Shoprite buy-out transaction: The Shoprite buy-out transaction was structured to obtain deduction for interest. The transaction was also structured to utilise the relief provisions of Part II of Chapter II (Special Provisions Relating to Companies) of the Income Tax Act no.58 of 1962, as amended (“the Act”). The relief was for capital gains tax (“CGT”) on disposal of the Shoprite assets. Finally, the transaction was designed to allow the existing shareholders to exit their investments free of Secondary Tax on Companies (“STC”). The reaction of SARS to the Shoprite buy-out transaction Whereas SARS may have been justified in questioning the structure and its impact on fiscal revenue, the response in the form of withdrawing STC relief from amalgamation transactions in section 44 was not in the best interest of a stable tax system and the majority of tax payers who are not misusing or abusing loopholes in the income tax legislation. It may have been possible for SARS to attack the structure based on the General Anti-Avoidance Rule (GAAR) in part IIA of the Chapter III of the Act.
- Full Text:
- Date Issued: 2008
The tax implications of non-resident sportspersons performing and earning an income in South Africa
- Authors: Wessels, Jacques
- Date: 2008
- Subjects: South African Revenue Service , Sports -- Taxation -- Law and legislation -- South Africa , Taxation -- Law and legislation -- South Africa , Income tax -- Law and legislation -- South Africa , Income tax -- Foreign income , Income tax -- South Africa -- Foreign income , Withholding tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:893 , http://hdl.handle.net/10962/d1003719 , South African Revenue Service , Sports -- Taxation -- Law and legislation -- South Africa , Taxation -- Law and legislation -- South Africa , Income tax -- Law and legislation -- South Africa , Income tax -- Foreign income , Income tax -- South Africa -- Foreign income , Withholding tax -- Law and legislation -- South Africa
- Description: As the number of non-resident sports persons competing in South Africa increases so does the need to tax them more effectively. It was for this reason that the South African legislature decided to insert Part IlIA into the Income Tax Act which regulates the taxation of non-resident sports persons in South Africa. The new tax on foreign sports persons, which came into effect during August 2006, is a withholding tax placing the onus upon the organizer of the event to withhold the tax portion of the payment to the non-resident sportsperson and pay it over to the revenue services. The rate of taxation has been set at 15 percent on all amounts received by or accruing to a foreign sportsperson. The question which the research addressed is whether this new tax will prove to be an effective tax, both from the point of view of its equity and the administration of the tax. In order to determine the impact of the new tax, it was compared to similar taxes implemented in the United Kingdom and Australia and also to other withholding taxes levied in South Africa. The new tax was also measured against a theoretical model for effectiveness, compared to the pre-August 2006 situation and to the taxation of resident sportsmen and women, using hypothetical examples. The major shortcomings of the new withholding tax are the uncertainty with regard to the intention of the legislature on matters such as the taxation of capital income versus revenue income, the question whether payments to support staff are included in the ambit of the new tax, the taxation of the award of assets in lieu of cash payments and the definition of a resident. A further area of concern is that the rate of taxation of 15 percent appears to be too low and creates horizontal inequity between the taxation of resident and non-resident sports persons. The new tax on non-resident sports persons may have its shortcomings but, depending upon the administrative and support structures put in place to deal with it, will be an effective tax. The rate at which the tax is levied could result in a less tax being collected than before but, with the reduced administrative cost of tax collection, the effective/statutory ratio of the tax could well be much higher than it was. This is a new tax in South Africa and certain initial problems are inevitable and will undoubtedly be solved as the administrators gain experience and as the case law governing this tax develops. , KMBT_363
- Full Text:
- Date Issued: 2008
- Authors: Wessels, Jacques
- Date: 2008
- Subjects: South African Revenue Service , Sports -- Taxation -- Law and legislation -- South Africa , Taxation -- Law and legislation -- South Africa , Income tax -- Law and legislation -- South Africa , Income tax -- Foreign income , Income tax -- South Africa -- Foreign income , Withholding tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:893 , http://hdl.handle.net/10962/d1003719 , South African Revenue Service , Sports -- Taxation -- Law and legislation -- South Africa , Taxation -- Law and legislation -- South Africa , Income tax -- Law and legislation -- South Africa , Income tax -- Foreign income , Income tax -- South Africa -- Foreign income , Withholding tax -- Law and legislation -- South Africa
- Description: As the number of non-resident sports persons competing in South Africa increases so does the need to tax them more effectively. It was for this reason that the South African legislature decided to insert Part IlIA into the Income Tax Act which regulates the taxation of non-resident sports persons in South Africa. The new tax on foreign sports persons, which came into effect during August 2006, is a withholding tax placing the onus upon the organizer of the event to withhold the tax portion of the payment to the non-resident sportsperson and pay it over to the revenue services. The rate of taxation has been set at 15 percent on all amounts received by or accruing to a foreign sportsperson. The question which the research addressed is whether this new tax will prove to be an effective tax, both from the point of view of its equity and the administration of the tax. In order to determine the impact of the new tax, it was compared to similar taxes implemented in the United Kingdom and Australia and also to other withholding taxes levied in South Africa. The new tax was also measured against a theoretical model for effectiveness, compared to the pre-August 2006 situation and to the taxation of resident sportsmen and women, using hypothetical examples. The major shortcomings of the new withholding tax are the uncertainty with regard to the intention of the legislature on matters such as the taxation of capital income versus revenue income, the question whether payments to support staff are included in the ambit of the new tax, the taxation of the award of assets in lieu of cash payments and the definition of a resident. A further area of concern is that the rate of taxation of 15 percent appears to be too low and creates horizontal inequity between the taxation of resident and non-resident sports persons. The new tax on non-resident sports persons may have its shortcomings but, depending upon the administrative and support structures put in place to deal with it, will be an effective tax. The rate at which the tax is levied could result in a less tax being collected than before but, with the reduced administrative cost of tax collection, the effective/statutory ratio of the tax could well be much higher than it was. This is a new tax in South Africa and certain initial problems are inevitable and will undoubtedly be solved as the administrators gain experience and as the case law governing this tax develops. , KMBT_363
- Full Text:
- Date Issued: 2008
The trajectory, dynamics, determinants and nature of institutional change in post-1994 South African higher education
- Authors: Badat, Saleem
- Date: 2008
- Language: English
- Type: Conference paper , text
- Identifier: vital:7120 , http://hdl.handle.net/10962/d1006568
- Description: Introduction: The institutional change agenda in post-1994 South African higher education has been extensive in its objects, ambitious in its goals, and far-reaching in nature. Given its scope, it is not possible here to critically analyse change in all its dimensions or in all arenas. Instead, this paper confines itself to analysing the trajectory, dynamics, outcomes and determinants of institutional change in South African higher education since 1994, and concludes with observations on the nature of change. , Higher Education Close Up 4 : University of Cape Town, Breakwater Conference Centre, 26-28 June 2008
- Full Text:
- Date Issued: 2008
- Authors: Badat, Saleem
- Date: 2008
- Language: English
- Type: Conference paper , text
- Identifier: vital:7120 , http://hdl.handle.net/10962/d1006568
- Description: Introduction: The institutional change agenda in post-1994 South African higher education has been extensive in its objects, ambitious in its goals, and far-reaching in nature. Given its scope, it is not possible here to critically analyse change in all its dimensions or in all arenas. Instead, this paper confines itself to analysing the trajectory, dynamics, outcomes and determinants of institutional change in South African higher education since 1994, and concludes with observations on the nature of change. , Higher Education Close Up 4 : University of Cape Town, Breakwater Conference Centre, 26-28 June 2008
- Full Text:
- Date Issued: 2008
The tuba in solo and ensemble repertory : a critical perspective
- Authors: Bower, Danel
- Date: 2008
- Subjects: Tuba -- Performance , Tuba -- History and criticism
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8515 , http://hdl.handle.net/10948/759 , http://hdl.handle.net/10948/d1012064 , Tuba -- Performance , Tuba -- History and criticism
- Description: The topic of this research is to explore various aspects pertaining to the tuba and its role in music. The role of the tuba in modern performance practice is greatly dependent on the history of the tuba and the different roles that were fulfilled in the various eras. The study begins with an investigation into the most important predecessors of the tuba – the most prominent thereof being the ophicleide. The next field of study includes the role of the tuba in orchestras in different countries as well as the role that the tuba fulfills in various ensembles. There is a wide variety of brass instruments that were manufactured in the past and are still being produced today. Various improvements and adaptations of the tuba are listed and studied. Next the tuba is considered in its capacity as a solo instrument and the fact that the tuba can exist as a solo instrument is motivated. Even though it might not be evident that there are a large number of composers for this instrument, some of the most respected and influential composers of tuba music of all time are sighted in this study. Several famous and celebrated tuba players are mentioned and their accomplishments listed. Finally the three practical music examination institutions in South Africa are studied. Lists are compiled to assess the quality of the different examination options between these institutions and provide a suggestion of a preferred option.
- Full Text:
- Date Issued: 2008
- Authors: Bower, Danel
- Date: 2008
- Subjects: Tuba -- Performance , Tuba -- History and criticism
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8515 , http://hdl.handle.net/10948/759 , http://hdl.handle.net/10948/d1012064 , Tuba -- Performance , Tuba -- History and criticism
- Description: The topic of this research is to explore various aspects pertaining to the tuba and its role in music. The role of the tuba in modern performance practice is greatly dependent on the history of the tuba and the different roles that were fulfilled in the various eras. The study begins with an investigation into the most important predecessors of the tuba – the most prominent thereof being the ophicleide. The next field of study includes the role of the tuba in orchestras in different countries as well as the role that the tuba fulfills in various ensembles. There is a wide variety of brass instruments that were manufactured in the past and are still being produced today. Various improvements and adaptations of the tuba are listed and studied. Next the tuba is considered in its capacity as a solo instrument and the fact that the tuba can exist as a solo instrument is motivated. Even though it might not be evident that there are a large number of composers for this instrument, some of the most respected and influential composers of tuba music of all time are sighted in this study. Several famous and celebrated tuba players are mentioned and their accomplishments listed. Finally the three practical music examination institutions in South Africa are studied. Lists are compiled to assess the quality of the different examination options between these institutions and provide a suggestion of a preferred option.
- Full Text:
- Date Issued: 2008
The underreporting of sexual violence against women in the Camdeboo
- Authors: Luyt, Derek
- Date: 2008
- Subjects: Women -- Violence against -- South Africa -- Camdeboo, Plains of Abused women -- South Africa -- Camdeboo, Plains of Sexual abuse victims -- South Africa -- Camdeboo, Plains of Camdeboo, Plains of (South Africa)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2796 , http://hdl.handle.net/10962/d1003006
- Description: This thesis examines the underreporting of sexual violence against women in the Camdeboo. It is based on a survey of 971 women living in the Camdeboo aged fifteen and older. The thesis considers, with reference to relevant secondary literature, methodological issues pertinent to conducting survey research into violence against women. While many survey researchers into violence against women argue that behaviourally specific questions lead to higher rates of disclosure, the survey on which this thesis is based employed complex and open-ended questions to allow respondents to record their own definitions of physical and sexual abuse. 31,2 percent of the women surveyed disclosed having experienced sexual abuse, but 76,7 percent did not report this abuse to the police. The thesis explores the patterns of sexual abuse of women in the Camdeboo and the factors influencing the underreporting of such abuse. While it was possible to establish correlations between certain socio-demographic variables and the underreporting of sexual abuse, such correlations should be treated with caution. The survey found that women were far more likely to report (and disclose) sexual assaults by strangers than by people known to them, particularly intimate partners. Sexual abuse in intimate relations was found to be strongly associated with physical abuse, and women who had experienced sexual and physical abuse within intimate relationships were more likely to report their physical abuse to the police than their sexual abuse. However, the majority of women, particularly poor and economically dependent women, believed that reporting their intimate partner abuse to the police would not end it, and might even place them at greater risk. The evidence suggests that these perceptions are accurate. Under current circumstances, reporting sexual abuse to the police may not be the best help-seeking strategy available to many sexually abused women, and alternative sources of help may be more appropriate. Consideration should be given to directing more resources into such alternatives.
- Full Text:
- Date Issued: 2008
- Authors: Luyt, Derek
- Date: 2008
- Subjects: Women -- Violence against -- South Africa -- Camdeboo, Plains of Abused women -- South Africa -- Camdeboo, Plains of Sexual abuse victims -- South Africa -- Camdeboo, Plains of Camdeboo, Plains of (South Africa)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2796 , http://hdl.handle.net/10962/d1003006
- Description: This thesis examines the underreporting of sexual violence against women in the Camdeboo. It is based on a survey of 971 women living in the Camdeboo aged fifteen and older. The thesis considers, with reference to relevant secondary literature, methodological issues pertinent to conducting survey research into violence against women. While many survey researchers into violence against women argue that behaviourally specific questions lead to higher rates of disclosure, the survey on which this thesis is based employed complex and open-ended questions to allow respondents to record their own definitions of physical and sexual abuse. 31,2 percent of the women surveyed disclosed having experienced sexual abuse, but 76,7 percent did not report this abuse to the police. The thesis explores the patterns of sexual abuse of women in the Camdeboo and the factors influencing the underreporting of such abuse. While it was possible to establish correlations between certain socio-demographic variables and the underreporting of sexual abuse, such correlations should be treated with caution. The survey found that women were far more likely to report (and disclose) sexual assaults by strangers than by people known to them, particularly intimate partners. Sexual abuse in intimate relations was found to be strongly associated with physical abuse, and women who had experienced sexual and physical abuse within intimate relationships were more likely to report their physical abuse to the police than their sexual abuse. However, the majority of women, particularly poor and economically dependent women, believed that reporting their intimate partner abuse to the police would not end it, and might even place them at greater risk. The evidence suggests that these perceptions are accurate. Under current circumstances, reporting sexual abuse to the police may not be the best help-seeking strategy available to many sexually abused women, and alternative sources of help may be more appropriate. Consideration should be given to directing more resources into such alternatives.
- Full Text:
- Date Issued: 2008
The use of mobile commerce to improve the services of life insurance post sale activities
- Authors: Afrifa, Rexford
- Date: 2008
- Subjects: Mobile commerce -- South Africa , Mobile computing -- South Africa , Mobile communication systems -- South Africa , Personal communication service systems -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8718 , http://hdl.handle.net/10948/913 , Mobile commerce -- South Africa , Mobile computing -- South Africa , Mobile communication systems -- South Africa , Personal communication service systems -- South Africa
- Description: Mobile commerce, due to its inherent characteristics of mobility and reachability in enhancing personalized services provides an excellent means for life insurers to exploit such avenue in their service offerings. The objective of this study was to determine whether mobile commerce can be used to improve the services of life insurance post-sale activities. This objective was achieved with the relevant literature and empirical study. To accomplish the objective of this treatise, a triangulated research approach was selected and a multiple-case study consisting of four cases was conducted. The four cases selected comprised of leading insurers with large market share in the life insurance market in South-Africa. The primary data were collected through questionnaire and face-to-face interviews with selected respondents. The main finding shows that the respondents had a positive view about mobile commerce and its application in their companies. This was demonstrated by 80 percent of respondents who agreed that mobile commerce was more of an opportunity rather than a challenge or even a threat for the life insurance market. The results also indicate that customer relationship management, mobile messaging services and field service automation functions were used by all the insurers; although minor discrepancies were observed due to the efficiency of each firms IT infrastructure. The Internet was found to assist in the collection of more precise data, to increase service performing abilities. Some of the major obstacles that were found to hinder the deployment of mobile commerce in the industry were security concerns, low and infrequent internet usage and performance by supporting industries. Cumbersome and inefficient legacy systems were declared as the greatest technological weakness particularly by respondents from case 1 and 2. Conversely, hardware and network infrastructure, lack of software packages, lack of technical expertise and the fear of disintermediation was rated low in hindering the deployment of mobile commerce. However, according to the findings the key benefits derived from engaging in increased mobile commerce activities include enhancing customer contact and service, more transparency and speed of claims management, increasing client retention and policy extension rates hence increasing overall company profit.
- Full Text:
- Date Issued: 2008
- Authors: Afrifa, Rexford
- Date: 2008
- Subjects: Mobile commerce -- South Africa , Mobile computing -- South Africa , Mobile communication systems -- South Africa , Personal communication service systems -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8718 , http://hdl.handle.net/10948/913 , Mobile commerce -- South Africa , Mobile computing -- South Africa , Mobile communication systems -- South Africa , Personal communication service systems -- South Africa
- Description: Mobile commerce, due to its inherent characteristics of mobility and reachability in enhancing personalized services provides an excellent means for life insurers to exploit such avenue in their service offerings. The objective of this study was to determine whether mobile commerce can be used to improve the services of life insurance post-sale activities. This objective was achieved with the relevant literature and empirical study. To accomplish the objective of this treatise, a triangulated research approach was selected and a multiple-case study consisting of four cases was conducted. The four cases selected comprised of leading insurers with large market share in the life insurance market in South-Africa. The primary data were collected through questionnaire and face-to-face interviews with selected respondents. The main finding shows that the respondents had a positive view about mobile commerce and its application in their companies. This was demonstrated by 80 percent of respondents who agreed that mobile commerce was more of an opportunity rather than a challenge or even a threat for the life insurance market. The results also indicate that customer relationship management, mobile messaging services and field service automation functions were used by all the insurers; although minor discrepancies were observed due to the efficiency of each firms IT infrastructure. The Internet was found to assist in the collection of more precise data, to increase service performing abilities. Some of the major obstacles that were found to hinder the deployment of mobile commerce in the industry were security concerns, low and infrequent internet usage and performance by supporting industries. Cumbersome and inefficient legacy systems were declared as the greatest technological weakness particularly by respondents from case 1 and 2. Conversely, hardware and network infrastructure, lack of software packages, lack of technical expertise and the fear of disintermediation was rated low in hindering the deployment of mobile commerce. However, according to the findings the key benefits derived from engaging in increased mobile commerce activities include enhancing customer contact and service, more transparency and speed of claims management, increasing client retention and policy extension rates hence increasing overall company profit.
- Full Text:
- Date Issued: 2008
The value of the middleman in the supply chain of South African tyre production
- Authors: Cornelius, André G
- Date: 2008
- Subjects: Tires -- Industrialists -- South Africa Tire Industry -- South Africa Commercial agents -- South Africa Business logistics -- Management -- South Africa Physical distribution of goods -- Management Commercial agents -- South Africa Marketing channels -- Management -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:770 , http://hdl.handle.net/10962/d1003891
- Description: Only a few middlemen linking chemical intermediate product supply to world tyre productions have managed to survive new direct business models. In fact, the only region, where the practice of using a middleman in the supply chain of tyre production, for a certain primary manufacturer, is in South Africa. Tyre producers in other world regions, similar in market complexity to South Africa, have experienced the elimination of the middleman. Hence the question of this research, why is the middleman in the supply chain of tyre production in South Africa still a better option than that of direct business models? To begin with, the thesis stated that the middleman in the supply chain of South African tyre producers delivers better value than that of the direct business model. To prove/disprove this thesis, the principle that value is a trade-off between what you get for what you give was the basis of this research (Zeithaml, 1998). Further, a model was developed, from secondary literature, to conceptualise this trade-off to provide evidence to prove/disprove that the middleman provides greater value than value from the direct business model. From this point, the research approach was to collect data through interviews to find out the most important aspect of value created by the middleman. Data collected were analysed, using the structure of the model as a guide, to find evidence of the trade-off. This analysis provided evidence that the relationship between the middleman and the tyre producers in South Africa and between the middleman and primary product supplier is the value that the direct business model cannot replace.
- Full Text:
- Date Issued: 2008
- Authors: Cornelius, André G
- Date: 2008
- Subjects: Tires -- Industrialists -- South Africa Tire Industry -- South Africa Commercial agents -- South Africa Business logistics -- Management -- South Africa Physical distribution of goods -- Management Commercial agents -- South Africa Marketing channels -- Management -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:770 , http://hdl.handle.net/10962/d1003891
- Description: Only a few middlemen linking chemical intermediate product supply to world tyre productions have managed to survive new direct business models. In fact, the only region, where the practice of using a middleman in the supply chain of tyre production, for a certain primary manufacturer, is in South Africa. Tyre producers in other world regions, similar in market complexity to South Africa, have experienced the elimination of the middleman. Hence the question of this research, why is the middleman in the supply chain of tyre production in South Africa still a better option than that of direct business models? To begin with, the thesis stated that the middleman in the supply chain of South African tyre producers delivers better value than that of the direct business model. To prove/disprove this thesis, the principle that value is a trade-off between what you get for what you give was the basis of this research (Zeithaml, 1998). Further, a model was developed, from secondary literature, to conceptualise this trade-off to provide evidence to prove/disprove that the middleman provides greater value than value from the direct business model. From this point, the research approach was to collect data through interviews to find out the most important aspect of value created by the middleman. Data collected were analysed, using the structure of the model as a guide, to find evidence of the trade-off. This analysis provided evidence that the relationship between the middleman and the tyre producers in South Africa and between the middleman and primary product supplier is the value that the direct business model cannot replace.
- Full Text:
- Date Issued: 2008