South African women's literature and the ecofeminist perspective
- Authors: Ewing, Maureen Colleen
- Date: 2013-05-24
- Subjects: Ecofeminism in literature Ecology in literature Nature in literature South African fiction -- History and criticism Smith, Pauline, 1883-1959 Schreiner, Olive, 1855-1920 Matthee, Dalene, 1938-2005 Poland, Marguerite
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2287 , http://hdl.handle.net/10962/d1007808
- Description: A social-constructionist ecofeminist perspective argues that patriarchal society separates the human (or culture) from nature, which causes a false assumption that humanity possesses the right, as a superior species, to dominate nature. This perspective integrates the domination of nature with social conflicts, including but not limited to racial discrimination, gender oppression, and class hierarchies. Understanding how these various forms of oppression interrelate forms the main goal of an ecofeminist perspective. Since the nature-culture, female-male, and whitenonwhite conflicts resonate and interlock throughout South Africa's history, socialconstructionist ecofeminism is an indispensable perspective for analysing South African literature. This thesis takes a social-constructionist ecofeminist approach and applies it to four women authors that write about South African society between the years 1860-1900. This thesis includes the following authors and their works: Olive Schreiner (1855-1920) and two of her novels, The Story of an African Farm (1883) and From Man to Man (published posthumously in 1927); Pauline Smith (1882-1959) and her novel The Beadle (1926); Dalene Matthee (1938- ) and three of her novels, Circles in a Forest (1984), Fiela's Child (1986), and The Mulberry Forest (1987); and Marguerite Poland (1950- ) and one of her novels, Shades (1993). This thesis investigates two women from the time period (Schreiner and Smith) and two women from a late twentieth century perspective (Matthee and Poland) and compares how they depict the natural environment, how they construct gender, and how they interpret class and race power struggles. This thesis concludes that the social-constructionist perspective offers unique insights into these four authors. Schreiner's novels reveal her concerns about gender and racial conflicts in South Africa and her understanding of the nature-culture dichotomy as sustained by Social Darwinism. Smith offers insights into the complex power structures in a rural Afrikaans society that keep women and nonwhite races silent. Matthee writes nature as an active participant in her novels; the social and ecological conflicts emphasise the transformation of the Knysna area. Poland explores the racial tensions, gender conflicts, and environmental concerns that preceded the South African War. Schreiner, Smith, Matthee, and Poland make up a small cross-section of South African literature, but they provide a basis for further discussing the ecofeminist perspective within a South African context. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Authors: Ewing, Maureen Colleen
- Date: 2013-05-24
- Subjects: Ecofeminism in literature Ecology in literature Nature in literature South African fiction -- History and criticism Smith, Pauline, 1883-1959 Schreiner, Olive, 1855-1920 Matthee, Dalene, 1938-2005 Poland, Marguerite
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2287 , http://hdl.handle.net/10962/d1007808
- Description: A social-constructionist ecofeminist perspective argues that patriarchal society separates the human (or culture) from nature, which causes a false assumption that humanity possesses the right, as a superior species, to dominate nature. This perspective integrates the domination of nature with social conflicts, including but not limited to racial discrimination, gender oppression, and class hierarchies. Understanding how these various forms of oppression interrelate forms the main goal of an ecofeminist perspective. Since the nature-culture, female-male, and whitenonwhite conflicts resonate and interlock throughout South Africa's history, socialconstructionist ecofeminism is an indispensable perspective for analysing South African literature. This thesis takes a social-constructionist ecofeminist approach and applies it to four women authors that write about South African society between the years 1860-1900. This thesis includes the following authors and their works: Olive Schreiner (1855-1920) and two of her novels, The Story of an African Farm (1883) and From Man to Man (published posthumously in 1927); Pauline Smith (1882-1959) and her novel The Beadle (1926); Dalene Matthee (1938- ) and three of her novels, Circles in a Forest (1984), Fiela's Child (1986), and The Mulberry Forest (1987); and Marguerite Poland (1950- ) and one of her novels, Shades (1993). This thesis investigates two women from the time period (Schreiner and Smith) and two women from a late twentieth century perspective (Matthee and Poland) and compares how they depict the natural environment, how they construct gender, and how they interpret class and race power struggles. This thesis concludes that the social-constructionist perspective offers unique insights into these four authors. Schreiner's novels reveal her concerns about gender and racial conflicts in South Africa and her understanding of the nature-culture dichotomy as sustained by Social Darwinism. Smith offers insights into the complex power structures in a rural Afrikaans society that keep women and nonwhite races silent. Matthee writes nature as an active participant in her novels; the social and ecological conflicts emphasise the transformation of the Knysna area. Poland explores the racial tensions, gender conflicts, and environmental concerns that preceded the South African War. Schreiner, Smith, Matthee, and Poland make up a small cross-section of South African literature, but they provide a basis for further discussing the ecofeminist perspective within a South African context. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
Isolation of antigenic peptides of Cowdria ruminantium and their encoding genes using a genome-derived phage display library
- Authors: Fehrsen, Jeanni
- Date: 2003
- Subjects: Bacteriophages -- Genetics Ruminants -- Diseases Heartwater
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3920 , http://hdl.handle.net/10962/d1003979
- Description: The development of new and effective vaccines and immunodiagnostic reagents requires the characterisation of antigenically relevant proteins and their interactions with the products of the immune system. Phage display technology was investigated as a means of elucidating some of the antigenic properties of the rickettsial parasite, Cowdria ruminantium (Cowdria). Randomly fragmented gene-derived libraries have been useful in elucidating viral and other epitopes, but only limited work has been done with entire genomes. A phage display library expressing a repertoire of Cowdria peptides was constructed. It was sufficiently large to represent the organism's genome, but lacked phages displaying peptides coded for by genes containing a Pvu II restriction enzyme site, including the one coding for the major antigenic protein 1 (MAP1). This was considered advantageous since MAP1 is immunodominant and has already been well characterised. Affinity selection with antibodies against Cowdria proteins other than MAP1 allowed several antibody-reactive peptides to be isolated. These selected sequences were placed in the context of the genome by screening a lambda bacteriophage library and by comparison with Cowdria DNA sequences. Apart from showing that antigenic mimics were present in the phage display library, six open reading frames encoding putative Cowdria proteins were identified. All had similarities to, or motifs in common with, membrane proteins and are thus likely to be exposed to the host's humoral immune system. Some of the proteins identified were larger than the antigens used to elicit the antibodies used for selection, probably as a result of the presence of cross-reactive epitopes. Despite limitations experienced when extending a fragmented-gene approach for epitope location to genomes, it was possible to identify an antigenic region on MAP1 by comparison with selected mimics. In addition, binding peptide sequences were identified with two monoclonal antibodies that had been raised against non-Cowdria antigens. An epitope on the VP7 protein of bluetongue virus was identified and peptides were found that reacted with a monoclonal antibody directed against malignant catarrhal fever virus. Thus, apart from being able to identify several potentially important Cowdria epitopes and genes, the fragmented-genome library holds promise as a universal reagent for identifying useful mimics.
- Full Text:
- Date Issued: 2003
- Authors: Fehrsen, Jeanni
- Date: 2003
- Subjects: Bacteriophages -- Genetics Ruminants -- Diseases Heartwater
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3920 , http://hdl.handle.net/10962/d1003979
- Description: The development of new and effective vaccines and immunodiagnostic reagents requires the characterisation of antigenically relevant proteins and their interactions with the products of the immune system. Phage display technology was investigated as a means of elucidating some of the antigenic properties of the rickettsial parasite, Cowdria ruminantium (Cowdria). Randomly fragmented gene-derived libraries have been useful in elucidating viral and other epitopes, but only limited work has been done with entire genomes. A phage display library expressing a repertoire of Cowdria peptides was constructed. It was sufficiently large to represent the organism's genome, but lacked phages displaying peptides coded for by genes containing a Pvu II restriction enzyme site, including the one coding for the major antigenic protein 1 (MAP1). This was considered advantageous since MAP1 is immunodominant and has already been well characterised. Affinity selection with antibodies against Cowdria proteins other than MAP1 allowed several antibody-reactive peptides to be isolated. These selected sequences were placed in the context of the genome by screening a lambda bacteriophage library and by comparison with Cowdria DNA sequences. Apart from showing that antigenic mimics were present in the phage display library, six open reading frames encoding putative Cowdria proteins were identified. All had similarities to, or motifs in common with, membrane proteins and are thus likely to be exposed to the host's humoral immune system. Some of the proteins identified were larger than the antigens used to elicit the antibodies used for selection, probably as a result of the presence of cross-reactive epitopes. Despite limitations experienced when extending a fragmented-gene approach for epitope location to genomes, it was possible to identify an antigenic region on MAP1 by comparison with selected mimics. In addition, binding peptide sequences were identified with two monoclonal antibodies that had been raised against non-Cowdria antigens. An epitope on the VP7 protein of bluetongue virus was identified and peptides were found that reacted with a monoclonal antibody directed against malignant catarrhal fever virus. Thus, apart from being able to identify several potentially important Cowdria epitopes and genes, the fragmented-genome library holds promise as a universal reagent for identifying useful mimics.
- Full Text:
- Date Issued: 2003
An investigation into the relationship marketing strategies applied by Eastern Cape based travel agents
- Authors: Fisher, Gary
- Date: 2003
- Subjects: Relationship marketing -- South Africa -- Eastern Cape , Travel agents -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MTech (Marketing)
- Identifier: vital:10766 , http://hdl.handle.net/10948/251 , Relationship marketing -- South Africa -- Eastern Cape , Travel agents -- South Africa -- Eastern Cape
- Description: Relationship marketing has grown in importance. This growth affects all industries, including the tourism, hospitality and travel industry. Of particular importance is the bond of relationship marketing between suppliers (principals) and retailers (travel agents) in the distribution channel. The research was undertaken to: determine whether Eastern Cape travel agents perceive relationship marketing as important; establish, what the key elements of relationship marketing strategies are,according to literature; determine what marketing strategies are currently applied by Eastern Cape travel agents; provide guidelines to Eastern Cape travel agents to implement or improve their relationship marketing strategies. Fifty self-administered questionnaires were distributed to the entire population of travel agents in the Eastern Cape. A total of 30 travel agents responded. The empirical findings showed that: Most Eastern Cape travel agents perceived relationship marketing as important; Travel agents realized the importance of the management of such relationship marketing strategies; Most travel agents were aware of or used retention strategies to enhance relationship marketing strategies; Travel agents realized that to survive relationship marketing should be part of their future planning; All respondents believed that to successfully implement relationship marketing, all staff, from front-line to top-management, need to be committed to the programme. In conclusion, relationship marketing is growing in importance and all role players need to acknowledge and manage this trend. However, this research has shown that there is a paradigm shift as more travel agents are moving away from the traditional marketing to relationship marketing.
- Full Text:
- Date Issued: 2003
- Authors: Fisher, Gary
- Date: 2003
- Subjects: Relationship marketing -- South Africa -- Eastern Cape , Travel agents -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MTech (Marketing)
- Identifier: vital:10766 , http://hdl.handle.net/10948/251 , Relationship marketing -- South Africa -- Eastern Cape , Travel agents -- South Africa -- Eastern Cape
- Description: Relationship marketing has grown in importance. This growth affects all industries, including the tourism, hospitality and travel industry. Of particular importance is the bond of relationship marketing between suppliers (principals) and retailers (travel agents) in the distribution channel. The research was undertaken to: determine whether Eastern Cape travel agents perceive relationship marketing as important; establish, what the key elements of relationship marketing strategies are,according to literature; determine what marketing strategies are currently applied by Eastern Cape travel agents; provide guidelines to Eastern Cape travel agents to implement or improve their relationship marketing strategies. Fifty self-administered questionnaires were distributed to the entire population of travel agents in the Eastern Cape. A total of 30 travel agents responded. The empirical findings showed that: Most Eastern Cape travel agents perceived relationship marketing as important; Travel agents realized the importance of the management of such relationship marketing strategies; Most travel agents were aware of or used retention strategies to enhance relationship marketing strategies; Travel agents realized that to survive relationship marketing should be part of their future planning; All respondents believed that to successfully implement relationship marketing, all staff, from front-line to top-management, need to be committed to the programme. In conclusion, relationship marketing is growing in importance and all role players need to acknowledge and manage this trend. However, this research has shown that there is a paradigm shift as more travel agents are moving away from the traditional marketing to relationship marketing.
- Full Text:
- Date Issued: 2003
An evaluation of the effectiveness of change management models utilised by organisations in the East Cape motor industry cluster
- Authors: Flesch, Devin Edward
- Date: 2003
- Subjects: Organizational change -- South Africa -- Eastern Cape , Motor industry -- South Africa -- Eastern Cape , Industrial management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MTech (Human Resources Management)
- Identifier: vital:10856 , http://hdl.handle.net/10948/125 , Organizational change -- South Africa -- Eastern Cape , Motor industry -- South Africa -- Eastern Cape , Industrial management -- South Africa -- Eastern Cape
- Description: There has never been an age in which change did not take place. However, the increase in the unpredictability of many factors of the 21st century means that organisations are susceptible to, and must embrace change. This results in an increase in the pace at which organisations may have to deal with change. This research study evaluates the interventions considered to bring about optimal change within organisations. In order to complete this study it was necessary to address the fundamentals of change management, tools utilised to manage change and the current theoretical models that assist organisations in managing change. The study took place within the Eastern Cape as it is regarded as the second fastest growing economy in South Africa. The researcher used the automotive cluster as the population for the study as it is the largest industry within the Eastern Cape. Based on the theoretical findings of a literature survey a questionnaire was developed and distributed to a randomly selected sample in the automotive cluster. The objective of the questionnaire was to evaluate the theory used and to develop a process model of change management. The results of the empirical study were statistically analysed and interpreted. Among the most important findings of the research was the fact that organisations in the Eastern Cape do not follow any specific theoretical model for managing change and very few organisations have a formal change management policy. Although the respondents to the survey acknowledged that it is imperative to engender an awareness of change management principles, especially among top management, the majority does not adhere to this principle because it is too time consuming! This research study highlights a number of areas where the management of change can be improved and presents a practical process model that can be adapted and used by the majority of organisations within the East Cape Motor Industry Cluster.
- Full Text:
- Date Issued: 2003
- Authors: Flesch, Devin Edward
- Date: 2003
- Subjects: Organizational change -- South Africa -- Eastern Cape , Motor industry -- South Africa -- Eastern Cape , Industrial management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MTech (Human Resources Management)
- Identifier: vital:10856 , http://hdl.handle.net/10948/125 , Organizational change -- South Africa -- Eastern Cape , Motor industry -- South Africa -- Eastern Cape , Industrial management -- South Africa -- Eastern Cape
- Description: There has never been an age in which change did not take place. However, the increase in the unpredictability of many factors of the 21st century means that organisations are susceptible to, and must embrace change. This results in an increase in the pace at which organisations may have to deal with change. This research study evaluates the interventions considered to bring about optimal change within organisations. In order to complete this study it was necessary to address the fundamentals of change management, tools utilised to manage change and the current theoretical models that assist organisations in managing change. The study took place within the Eastern Cape as it is regarded as the second fastest growing economy in South Africa. The researcher used the automotive cluster as the population for the study as it is the largest industry within the Eastern Cape. Based on the theoretical findings of a literature survey a questionnaire was developed and distributed to a randomly selected sample in the automotive cluster. The objective of the questionnaire was to evaluate the theory used and to develop a process model of change management. The results of the empirical study were statistically analysed and interpreted. Among the most important findings of the research was the fact that organisations in the Eastern Cape do not follow any specific theoretical model for managing change and very few organisations have a formal change management policy. Although the respondents to the survey acknowledged that it is imperative to engender an awareness of change management principles, especially among top management, the majority does not adhere to this principle because it is too time consuming! This research study highlights a number of areas where the management of change can be improved and presents a practical process model that can be adapted and used by the majority of organisations within the East Cape Motor Industry Cluster.
- Full Text:
- Date Issued: 2003
Using value stream mapping to identify waste in the manufacturing of automotive components at Federal Mogul
- Authors: Fry, Peter-John
- Date: 2003
- Subjects: Industrial efficiency , Production planning , Value added , Automobile industry and trade -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10865 , http://hdl.handle.net/10948/271 , Industrial efficiency , Production planning , Value added , Automobile industry and trade -- South Africa -- Eastern Cape
- Description: This research addresses the application of Value Stream Mapping in the automotive component industry. The goal of this research is to investigate how Value Stream Mapping can identify waste, and to evaluate its benefits on a specific application instance. Value Stream Mapping is used to first map the current state and then used to identify sources of waste and to identify lean tools to try eliminate this waste. The future state map is then developed with lean tools applied to it. A South African company, Federal Mogul South Africa (FMSA), has experienced the impact of globalisation and the need to become globally competitive first hand. FMSA will be used as a case study to illustrate the impact of using Value Stream Mapping as a tool for identify waste and the need for improving the performance of a company’s value stream in achieving the international goals set for the company and its supply chain.
- Full Text:
- Date Issued: 2003
- Authors: Fry, Peter-John
- Date: 2003
- Subjects: Industrial efficiency , Production planning , Value added , Automobile industry and trade -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10865 , http://hdl.handle.net/10948/271 , Industrial efficiency , Production planning , Value added , Automobile industry and trade -- South Africa -- Eastern Cape
- Description: This research addresses the application of Value Stream Mapping in the automotive component industry. The goal of this research is to investigate how Value Stream Mapping can identify waste, and to evaluate its benefits on a specific application instance. Value Stream Mapping is used to first map the current state and then used to identify sources of waste and to identify lean tools to try eliminate this waste. The future state map is then developed with lean tools applied to it. A South African company, Federal Mogul South Africa (FMSA), has experienced the impact of globalisation and the need to become globally competitive first hand. FMSA will be used as a case study to illustrate the impact of using Value Stream Mapping as a tool for identify waste and the need for improving the performance of a company’s value stream in achieving the international goals set for the company and its supply chain.
- Full Text:
- Date Issued: 2003
Development of a language policy in a rural school
- Authors: Fumba, Zamumzi Norman
- Date: 2003
- Subjects: Language policy -- South Africa Language and education -- South Africa Education, Rural -- South Africa -- Peddie Black people -- Education -- South Africa Native language and education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1940 , http://hdl.handle.net/10962/d1007798
- Description: The study was undertaken to observe and participate in the process and development of a language policy for a rural secondary school in Peddie in the Eastern Cape. This was done in collaboration with parents, learners, and teachers. The researcher acted as a researcher, facilitator and learner in the process that Iead to the final product. Twenty four learners were selected from Grade 8 to Grade 10. These learners formed three focus groups. A questionnaire and lesson observation were used to establish what was taking place in the school with regard to language practices and preferences by learners, teachers and parents. Lesson observations were recorded by a tape recorder. Outcomes are that Xhosa is the dominant language to which the learners are exposed. They only have the exposure to 'chunks' of English in class and when they read magazines, newspapers and listening to radio and TV. Teachers code switch. This is supported by both learners and their parents. Parents want their children to improve performance by being taught in the medium of a language they understand well enough. The study shows different perceptions about the language that should be used as LOLT. Parents in the study favour English as LOLT, while parents in general favour Xhosa. This view is also held by both teachers and learners. At a conscious level when teachers and learners talk about the language to be used as LOLT, they favour English, but when they are faced with the reality of the class they are ambivalent, hence they code switch. The study finally reports on the divergent views of the parents, on one hand, and those of the teachers and the learners on the other hand. The divergence will be resolved in a workshop, part of the broader process of school language policy research, which is beyond the scope of the research reported in the thesis. The final product, in the form of the school language policy, will then be drafted for presentation to the School Governing Body (SGB) for ratification and writing up process.
- Full Text:
- Date Issued: 2003
- Authors: Fumba, Zamumzi Norman
- Date: 2003
- Subjects: Language policy -- South Africa Language and education -- South Africa Education, Rural -- South Africa -- Peddie Black people -- Education -- South Africa Native language and education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1940 , http://hdl.handle.net/10962/d1007798
- Description: The study was undertaken to observe and participate in the process and development of a language policy for a rural secondary school in Peddie in the Eastern Cape. This was done in collaboration with parents, learners, and teachers. The researcher acted as a researcher, facilitator and learner in the process that Iead to the final product. Twenty four learners were selected from Grade 8 to Grade 10. These learners formed three focus groups. A questionnaire and lesson observation were used to establish what was taking place in the school with regard to language practices and preferences by learners, teachers and parents. Lesson observations were recorded by a tape recorder. Outcomes are that Xhosa is the dominant language to which the learners are exposed. They only have the exposure to 'chunks' of English in class and when they read magazines, newspapers and listening to radio and TV. Teachers code switch. This is supported by both learners and their parents. Parents want their children to improve performance by being taught in the medium of a language they understand well enough. The study shows different perceptions about the language that should be used as LOLT. Parents in the study favour English as LOLT, while parents in general favour Xhosa. This view is also held by both teachers and learners. At a conscious level when teachers and learners talk about the language to be used as LOLT, they favour English, but when they are faced with the reality of the class they are ambivalent, hence they code switch. The study finally reports on the divergent views of the parents, on one hand, and those of the teachers and the learners on the other hand. The divergence will be resolved in a workshop, part of the broader process of school language policy research, which is beyond the scope of the research reported in the thesis. The final product, in the form of the school language policy, will then be drafted for presentation to the School Governing Body (SGB) for ratification and writing up process.
- Full Text:
- Date Issued: 2003
A strategy for the implementation of e-business and e-commerce to achieve a competitive advantage in the textile industry
- Authors: Futcher, Shane Henry
- Date: 2003
- Subjects: Electronic commerce , Competition , Textile industry
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10886 , http://hdl.handle.net/10948/140 , Electronic commerce , Competition , Textile industry
- Description: The research problem addressed in this study was to determine what is required for e-business and e-commerce to have an impact on the Textile Industry in the Nelson Mandela Metropolitan. To achieve this objective, a literature study was done to identify what strategies were needed and how e-business and e-commerce would enhance the relationships between the organisations, suppliers and customers. An empirical study was conducted to ascertain what the managers within the Textile Industry know about e-commerce and e-business and the role they have or could play within their industry.
- Full Text:
- Date Issued: 2003
- Authors: Futcher, Shane Henry
- Date: 2003
- Subjects: Electronic commerce , Competition , Textile industry
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10886 , http://hdl.handle.net/10948/140 , Electronic commerce , Competition , Textile industry
- Description: The research problem addressed in this study was to determine what is required for e-business and e-commerce to have an impact on the Textile Industry in the Nelson Mandela Metropolitan. To achieve this objective, a literature study was done to identify what strategies were needed and how e-business and e-commerce would enhance the relationships between the organisations, suppliers and customers. An empirical study was conducted to ascertain what the managers within the Textile Industry know about e-commerce and e-business and the role they have or could play within their industry.
- Full Text:
- Date Issued: 2003
Involuntary consent
- Authors: Futter, Dylan Brian
- Date: 2013-05-24
- Subjects: Ignorance (Theory of knowledge) Responsiblity Free will and determinism Theory (Philosophy) Social ethics Blame
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2742 , http://hdl.handle.net/10962/d1007846
- Description: In this dissertation I take exception with a widely held philosophical doctrine, according to which agents are only blameworthy for the bad actions they have chosen to bring about. My argument strategy is to present cases in which agents are blamed for involuntary actions that are not in any way connected to their culpable and voluntary choices. These failures correspond, I suggest, to occasions of culpable ignorance where agents have been negligent or careless. More specifically, I claim that violations of natural duties of respect and consideration, and certain acquired role-type duties, are blamed without any voluntary consent. If my examples are persuasive, then the point is reached where a normative principle of 'voluntary consent' does not in fact coincide with people's actual practices and 'considered judgements'. In the final sections of the dissertation, I argue against the plausibility of keeping the principle and revising our judgements. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Authors: Futter, Dylan Brian
- Date: 2013-05-24
- Subjects: Ignorance (Theory of knowledge) Responsiblity Free will and determinism Theory (Philosophy) Social ethics Blame
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2742 , http://hdl.handle.net/10962/d1007846
- Description: In this dissertation I take exception with a widely held philosophical doctrine, according to which agents are only blameworthy for the bad actions they have chosen to bring about. My argument strategy is to present cases in which agents are blamed for involuntary actions that are not in any way connected to their culpable and voluntary choices. These failures correspond, I suggest, to occasions of culpable ignorance where agents have been negligent or careless. More specifically, I claim that violations of natural duties of respect and consideration, and certain acquired role-type duties, are blamed without any voluntary consent. If my examples are persuasive, then the point is reached where a normative principle of 'voluntary consent' does not in fact coincide with people's actual practices and 'considered judgements'. In the final sections of the dissertation, I argue against the plausibility of keeping the principle and revising our judgements. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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The anorexic mask : a case study of a patient with co-morbid nervosa and factitious disorder?
- Authors: Gaylard, Jeanne
- Date: 2003
- Subjects: Anorexia nervosa Anorexia nervosa -- Case studies Factitious disorders Factitious disorders -- Case studies
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3105 , http://hdl.handle.net/10962/d1004511
- Description: This study is a case-study of a patient who was diagnosed as having co-morbid Anorexia Nervosa and Factitious Disorder. It would appear that central to an understanding of both of these disorders is the patient's disturbed relationship to her own body. The existing literature on co-morbid Factitious Disorder and Anorexia Nervosa is rare, with only three cases published. A careful reading of these cases suggests that in all of these cases, Factitious Disorder may have been the primary diagnosis. In this case there was as overidentification with the patient role, and the patient's anorexic symptoms appeared to serve the function of meeting the patient's acute dependency needs. Thus, the patient's Anorexia Nervosa masked the Factitious Disorder and appeared to be secondary to the Factitious Disorder. It is argued that these disorders share several common dynamics, namely the inability to separate from the mother, high parental expectations as well as the use of the body as a transitional or pre-cursor object. In addition there are some common dynamics in the psychotherapy of these patients. All of these factors suggest that in both these disorders the developmental arrest may be located at a pre-verbal level.
- Full Text:
- Date Issued: 2003
- Authors: Gaylard, Jeanne
- Date: 2003
- Subjects: Anorexia nervosa Anorexia nervosa -- Case studies Factitious disorders Factitious disorders -- Case studies
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3105 , http://hdl.handle.net/10962/d1004511
- Description: This study is a case-study of a patient who was diagnosed as having co-morbid Anorexia Nervosa and Factitious Disorder. It would appear that central to an understanding of both of these disorders is the patient's disturbed relationship to her own body. The existing literature on co-morbid Factitious Disorder and Anorexia Nervosa is rare, with only three cases published. A careful reading of these cases suggests that in all of these cases, Factitious Disorder may have been the primary diagnosis. In this case there was as overidentification with the patient role, and the patient's anorexic symptoms appeared to serve the function of meeting the patient's acute dependency needs. Thus, the patient's Anorexia Nervosa masked the Factitious Disorder and appeared to be secondary to the Factitious Disorder. It is argued that these disorders share several common dynamics, namely the inability to separate from the mother, high parental expectations as well as the use of the body as a transitional or pre-cursor object. In addition there are some common dynamics in the psychotherapy of these patients. All of these factors suggest that in both these disorders the developmental arrest may be located at a pre-verbal level.
- Full Text:
- Date Issued: 2003
Analysis of material flow around a retractable pin in a friction stir weld
- Authors: Georgeou, Zacharias
- Date: 2003
- Subjects: Friction welding , Aluminum alloys -- Welding
- Language: English
- Type: Thesis , Masters , MTech (Mechanical Engineering)
- Identifier: vital:10812 , http://hdl.handle.net/10948/196 , Friction welding , Aluminum alloys -- Welding
- Description: Friction StirWelding (FSW) has been researched for a number of years since its inception in 1991. The work thus far has been based on understanding the material and thermal flow using the standard fixed pin tool. The keyhole resulting during tool extraction in a FSW weld, is a disadvantage and a current limiting factor. Eliminating this effect from a weld using a movable pin tools would make FSW more commercially viable. This dissertation focuses on the design of a novel retractable pin tool, and highlights the problems encountered during the welding of Aluminum plates, Al2024 and Al5083. Previously studied techniques of material and thermal flow were used, to investigate the effect of the tool during extraction in a FSW weld. A prototype retractable tool was designed using parametric and axiomatic design theory, and implementing a pneumatic muscle actuation system. The resulting problems in the calibration of the retractable pin tool and the resulting welds are presented, these results confirming previous studies. The movable pin produced discrepancies the heat generation around the shoulder during a FSW weld. The failure of this tool to produce a reasonable weld showed that previous ideas into the workings of a retractable pin tool requires further investigation, furthermore a fresh approach to the interpretation and understanding of the FSW weld process needs consideration.
- Full Text:
- Date Issued: 2003
- Authors: Georgeou, Zacharias
- Date: 2003
- Subjects: Friction welding , Aluminum alloys -- Welding
- Language: English
- Type: Thesis , Masters , MTech (Mechanical Engineering)
- Identifier: vital:10812 , http://hdl.handle.net/10948/196 , Friction welding , Aluminum alloys -- Welding
- Description: Friction StirWelding (FSW) has been researched for a number of years since its inception in 1991. The work thus far has been based on understanding the material and thermal flow using the standard fixed pin tool. The keyhole resulting during tool extraction in a FSW weld, is a disadvantage and a current limiting factor. Eliminating this effect from a weld using a movable pin tools would make FSW more commercially viable. This dissertation focuses on the design of a novel retractable pin tool, and highlights the problems encountered during the welding of Aluminum plates, Al2024 and Al5083. Previously studied techniques of material and thermal flow were used, to investigate the effect of the tool during extraction in a FSW weld. A prototype retractable tool was designed using parametric and axiomatic design theory, and implementing a pneumatic muscle actuation system. The resulting problems in the calibration of the retractable pin tool and the resulting welds are presented, these results confirming previous studies. The movable pin produced discrepancies the heat generation around the shoulder during a FSW weld. The failure of this tool to produce a reasonable weld showed that previous ideas into the workings of a retractable pin tool requires further investigation, furthermore a fresh approach to the interpretation and understanding of the FSW weld process needs consideration.
- Full Text:
- Date Issued: 2003
The challenges of managing HIV/AIDS counsellors in a rural district in the Eastern Cape, South Africa
- Authors: Gerber, Barbara
- Date: 2003
- Subjects: AIDS (Disease) -- Patients -- Counseling of -- South Africa -- Eastern Cape HIV-positive persons -- Counseling of -- South Africa -- Eastern Cape Counselors -- Supervision of -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3171 , http://hdl.handle.net/10962/d1007799
- Description: The pandemic of HIV/AIDS has challenged several aspects of contemporary social life. HIV/AIDS counselling has developed as a social response to provide support for those infected with the disease. Due to the nature and complexity of the disease, HIV/AIDS counsellors encounter a diversity and intensity of emotions when counselling. A support system that includes effective management and supervision may assist in resolving emotions and reactions that HIV/AIDS counsellors may experience as a result of working with HIV/AIDS clients. This study examines the difficulties that both managers and the HIV/AIDS counsellors at a rural district hospital in the Eastern Cape and its surrounding clinics are faced with, in providing the HIV/AIDS counsellors with the support they need. Engestrom's (1987) model of activity theory was used as a conceptual framework guiding both the analysis and interpretation of the data. This model facilitates the identification of tensions and contradictions thereby opening a space for change and transformation within an activity system. Multiple sources of data collection were used that included focus groups with managers and HIV/AIDS counsellors, interviews with senior hospital staff and an official from the Department of Health, Eastern Cape, and a tour of the rural district hospital. The findings suggest that HIV/AIDS counsellors do not feel supported by their managers. Managers in turn are of the opinion that they do not offer the support the HIV/AIDS counsellors' need. The lack of support is attributed to geographic distances between hospitals and the clinics they serve, lack of available transport and the multiplicity of roles of both managers and the HIV/AIDS counsellors. The pandemic of HIV/AIDS has challenged several aspects of contemporary social life. HIV/AIDS counselling has developed as a social response to provide support for those infected with the disease. Due to the nature and complexity of the disease, HIV/AIDS counsellors encounter a diversity and intensity of emotions when counselling. A support system that includes effective management and supervision may assist in resolving emotions and reactions that HIV/AIDS counsellors may experience as a result of working with HIV/AIDS clients. This study examines the difficulties that both managers and the HIV/AIDS counsellors at a rural district hospital in the Eastern Cape and its surrounding clinics are faced with, in providing the HIV/AIDS counsellors with the support they need. Engestrom's (1987) model of activity theory was used as a conceptual framework guiding both the analysis and interpretation of the data. This model facilitates the identification of tensions and contradictions thereby opening a space for change and transformation within an activity system. Multiple sources of data collection were used that included focus groups with managers and HIV/AIDS counsellors, interviews with senior hospital staff and an official from the Department of Health, Eastern Cape, and a tour of the rural district hospital. The findings suggest that HIV/AIDS counsellors do not feel supported by their managers. Managers in turn are of the opinion that they do not offer the support the HIV/AIDS counsellors' need. The lack of support is attributed to geographic distances between hospitals and the clinics they serve, lack of available transport and the multiplicity of roles of both managers and the HIV/AIDS counsellors. Recommendations include the introduction of self-supervision , peer groupsupervision for HIV/AIDS counsellors.
- Full Text:
- Date Issued: 2003
- Authors: Gerber, Barbara
- Date: 2003
- Subjects: AIDS (Disease) -- Patients -- Counseling of -- South Africa -- Eastern Cape HIV-positive persons -- Counseling of -- South Africa -- Eastern Cape Counselors -- Supervision of -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3171 , http://hdl.handle.net/10962/d1007799
- Description: The pandemic of HIV/AIDS has challenged several aspects of contemporary social life. HIV/AIDS counselling has developed as a social response to provide support for those infected with the disease. Due to the nature and complexity of the disease, HIV/AIDS counsellors encounter a diversity and intensity of emotions when counselling. A support system that includes effective management and supervision may assist in resolving emotions and reactions that HIV/AIDS counsellors may experience as a result of working with HIV/AIDS clients. This study examines the difficulties that both managers and the HIV/AIDS counsellors at a rural district hospital in the Eastern Cape and its surrounding clinics are faced with, in providing the HIV/AIDS counsellors with the support they need. Engestrom's (1987) model of activity theory was used as a conceptual framework guiding both the analysis and interpretation of the data. This model facilitates the identification of tensions and contradictions thereby opening a space for change and transformation within an activity system. Multiple sources of data collection were used that included focus groups with managers and HIV/AIDS counsellors, interviews with senior hospital staff and an official from the Department of Health, Eastern Cape, and a tour of the rural district hospital. The findings suggest that HIV/AIDS counsellors do not feel supported by their managers. Managers in turn are of the opinion that they do not offer the support the HIV/AIDS counsellors' need. The lack of support is attributed to geographic distances between hospitals and the clinics they serve, lack of available transport and the multiplicity of roles of both managers and the HIV/AIDS counsellors. The pandemic of HIV/AIDS has challenged several aspects of contemporary social life. HIV/AIDS counselling has developed as a social response to provide support for those infected with the disease. Due to the nature and complexity of the disease, HIV/AIDS counsellors encounter a diversity and intensity of emotions when counselling. A support system that includes effective management and supervision may assist in resolving emotions and reactions that HIV/AIDS counsellors may experience as a result of working with HIV/AIDS clients. This study examines the difficulties that both managers and the HIV/AIDS counsellors at a rural district hospital in the Eastern Cape and its surrounding clinics are faced with, in providing the HIV/AIDS counsellors with the support they need. Engestrom's (1987) model of activity theory was used as a conceptual framework guiding both the analysis and interpretation of the data. This model facilitates the identification of tensions and contradictions thereby opening a space for change and transformation within an activity system. Multiple sources of data collection were used that included focus groups with managers and HIV/AIDS counsellors, interviews with senior hospital staff and an official from the Department of Health, Eastern Cape, and a tour of the rural district hospital. The findings suggest that HIV/AIDS counsellors do not feel supported by their managers. Managers in turn are of the opinion that they do not offer the support the HIV/AIDS counsellors' need. The lack of support is attributed to geographic distances between hospitals and the clinics they serve, lack of available transport and the multiplicity of roles of both managers and the HIV/AIDS counsellors. Recommendations include the introduction of self-supervision , peer groupsupervision for HIV/AIDS counsellors.
- Full Text:
- Date Issued: 2003
The evaluation of potential improvements of barton pot oxides for lead acid batteries
- Authors: Geyer, Laurence Thomas
- Date: 2003
- Subjects: Lead oxides -- South Africa , Lead acid batteries -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10982 , http://hdl.handle.net/10948/233 , Lead oxides -- South Africa , Lead acid batteries -- South Africa
- Description: Lead Oxide (PbO) is the main material used for the preparation of the active material for the positive and negative electrodes in the lead acid battery where the electrochemical reaction that provides the electrical energy of the battery takes place. The particle size distribution and surface area characteristics of the lead oxide play a major role in the electrical performance of the completed battery. The two most commonly used processes to manufacture PbO in the lead acid battery industry are the Barton pot and the Ball mill processes. These two processes produce oxides that differ in particle size distribution, particle shape and surface area. It is generally accepted that the Ball mill process produces an oxide with a smaller mean particle size with a higher surface area and better initial electrical performance than the Barton pot process to the detriment of an initial higher capital and running cost. The study showed that it is possible to improve the surface area and particle size distribution characteristics of Barton pot oxide, by subsequently hammer milling the oxide particles before the paste manufacturing process. The results showed that there was an initial reduction in the particle size with an increase in the surface area. This increased the electrochemical performance in terms of the high rate discharge. However, further hammering of the oxide reduced the average particle size only slightly with little change in the surface area and a reduction in the electrochemical performance. The study showed that an improvement in Barton pot oxide can be achieved with a hammering of the oxide in order to obtain a uniform particle size with improved surface area and an improved high rate performance of the electrochemical cells made with such an oxide. As a comparison, the particle size and surface area characteristics of Ball mill lead oxide subjected to the hammer milling process was also studied. The results showed a similar effect to the Barton pot oxide on the particle size distribution. However, there was no appreciable change in the surface area due to the hammer milling process.
- Full Text:
- Date Issued: 2003
- Authors: Geyer, Laurence Thomas
- Date: 2003
- Subjects: Lead oxides -- South Africa , Lead acid batteries -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10982 , http://hdl.handle.net/10948/233 , Lead oxides -- South Africa , Lead acid batteries -- South Africa
- Description: Lead Oxide (PbO) is the main material used for the preparation of the active material for the positive and negative electrodes in the lead acid battery where the electrochemical reaction that provides the electrical energy of the battery takes place. The particle size distribution and surface area characteristics of the lead oxide play a major role in the electrical performance of the completed battery. The two most commonly used processes to manufacture PbO in the lead acid battery industry are the Barton pot and the Ball mill processes. These two processes produce oxides that differ in particle size distribution, particle shape and surface area. It is generally accepted that the Ball mill process produces an oxide with a smaller mean particle size with a higher surface area and better initial electrical performance than the Barton pot process to the detriment of an initial higher capital and running cost. The study showed that it is possible to improve the surface area and particle size distribution characteristics of Barton pot oxide, by subsequently hammer milling the oxide particles before the paste manufacturing process. The results showed that there was an initial reduction in the particle size with an increase in the surface area. This increased the electrochemical performance in terms of the high rate discharge. However, further hammering of the oxide reduced the average particle size only slightly with little change in the surface area and a reduction in the electrochemical performance. The study showed that an improvement in Barton pot oxide can be achieved with a hammering of the oxide in order to obtain a uniform particle size with improved surface area and an improved high rate performance of the electrochemical cells made with such an oxide. As a comparison, the particle size and surface area characteristics of Ball mill lead oxide subjected to the hammer milling process was also studied. The results showed a similar effect to the Barton pot oxide on the particle size distribution. However, there was no appreciable change in the surface area due to the hammer milling process.
- Full Text:
- Date Issued: 2003
Rugby : more than just a game : a study of the cumulative effects of mild head injuries on high school rugby players
- Authors: Giai-Coletti, Cristina
- Date: 2013-05-24
- Subjects: Head -- Wounds and injuries -- Complications Rugby football injuries Brain -- Concussion -- Complications Neuropsychological tests
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3175 , http://hdl.handle.net/10962/d1007809
- Description: The present study comprises part of an ongoing research study investigating the effects 0 f cumulative mild head injuries 0 n Rugby Union p layers. The aim 0 f t he study was to ascertain whether there are neuropsychological effects of cumulative mild head injuries sustained during the rugby-playing careers of senior schoolboy rugby players. Participants were top-level rugby players from high schools in Grahamstown and Cape Town (n = 79) and non-contact sport controls of top-level field hockey players from the same schools (n = 58). Group mean comparisons across a battery of neuropsychological tests were carried out between the Total Rugby versus the Total Field Hockey group, and the Rugby Forwards versus the Rugby Backs group. Comparisons between Total Rugby versus Total Field Hockey revealed impaired performance by the rugby players on two tests of visuoperceptual tracking, namely Digit Symbol Substitution and Trail Making Test (Part A). For Rugby Forwards versus Rugby Backs, there were no consistent differences to support the expectation that forwards would perform worse than backs. Forwards performed more poorly than backs on WMS Associate Learning Subtest - Hard (Delayed Recall), whereas backs performed more poorly than forwards on Digits Backwards. This suggests that some individuals in the cohort were starting to exhibit verbal memory deficit, albeit not clearly in association with forward positional play. Overall, results of the present study provide tentative support for the hypothesis that school level rugby players are more susceptible to the effects of cumulative concussive and sub-concussive head injuries than are non-contact sport controls. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Authors: Giai-Coletti, Cristina
- Date: 2013-05-24
- Subjects: Head -- Wounds and injuries -- Complications Rugby football injuries Brain -- Concussion -- Complications Neuropsychological tests
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3175 , http://hdl.handle.net/10962/d1007809
- Description: The present study comprises part of an ongoing research study investigating the effects 0 f cumulative mild head injuries 0 n Rugby Union p layers. The aim 0 f t he study was to ascertain whether there are neuropsychological effects of cumulative mild head injuries sustained during the rugby-playing careers of senior schoolboy rugby players. Participants were top-level rugby players from high schools in Grahamstown and Cape Town (n = 79) and non-contact sport controls of top-level field hockey players from the same schools (n = 58). Group mean comparisons across a battery of neuropsychological tests were carried out between the Total Rugby versus the Total Field Hockey group, and the Rugby Forwards versus the Rugby Backs group. Comparisons between Total Rugby versus Total Field Hockey revealed impaired performance by the rugby players on two tests of visuoperceptual tracking, namely Digit Symbol Substitution and Trail Making Test (Part A). For Rugby Forwards versus Rugby Backs, there were no consistent differences to support the expectation that forwards would perform worse than backs. Forwards performed more poorly than backs on WMS Associate Learning Subtest - Hard (Delayed Recall), whereas backs performed more poorly than forwards on Digits Backwards. This suggests that some individuals in the cohort were starting to exhibit verbal memory deficit, albeit not clearly in association with forward positional play. Overall, results of the present study provide tentative support for the hypothesis that school level rugby players are more susceptible to the effects of cumulative concussive and sub-concussive head injuries than are non-contact sport controls. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
An investigation into relationship-marketing strategies used by Morkels to retain customers
- Authors: Giddy, Peter Allan Spence
- Date: 2003
- Subjects: Relationship marketing -- South Africa , Morkels (Firm, South Africa) , Furniture industry and trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10855 , http://hdl.handle.net/10948/134 , Relationship marketing -- South Africa , Morkels (Firm, South Africa) , Furniture industry and trade -- South Africa
- Description: The research problem addressed in this study was an assessment of the relationship-marketing strategy that Morkels currently has in operation. This strategy focuses on membership of a club that is sold to customers when they open an account. The strategy is to keep in touch with the customer by means of the club magazine, a club card and various special events and offers that are exclusive to club members. The strategy, however, may not be entirely successful in achieving the goals and objectives as envisaged by the senior management of the company. The objective of the research was to establish what exactly relationship marketing is. Once having investigated the theory of relationship marketing, the objective of the research was to establish what the goals of the management at Morkels were and whether or not these goals were met. The methodology of the research was, firstly, to conduct a literature survey on relationship marketing. In particular the study of literature focused on the theory related to the retail market focussing essentially where similar marketing strategies had been investigated. A variety of aspects of relationship marketing and strategies that had previously been implemented were then examined. The literature survey also considered the way in which a successful strategy of relationship-marketing should be motivated, planned, implemented and followed through. Secondly the research established what the goals and objectives of the management of Morkels were by means of an investigation into the policies and manuals of the relationship-marketing department. Finally a questionnaire was disseminated to the senior management of Morkels to establish what they considered to be the needs and opinions of the customers of the Garden Route Area. A second questionnaire with similar questions was also submitted to a sample of club members. This was done to establish the opinions of both groups. The major findings of the research were that Morkels is experiencing a degree of success with its relationship-marketing strategy. The research findings also revealed that opinions of the customers and the management of Morkels do not concur on a number of issues. These differences and the most important factors were discussed and recommendations were made to management.
- Full Text:
- Date Issued: 2003
- Authors: Giddy, Peter Allan Spence
- Date: 2003
- Subjects: Relationship marketing -- South Africa , Morkels (Firm, South Africa) , Furniture industry and trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10855 , http://hdl.handle.net/10948/134 , Relationship marketing -- South Africa , Morkels (Firm, South Africa) , Furniture industry and trade -- South Africa
- Description: The research problem addressed in this study was an assessment of the relationship-marketing strategy that Morkels currently has in operation. This strategy focuses on membership of a club that is sold to customers when they open an account. The strategy is to keep in touch with the customer by means of the club magazine, a club card and various special events and offers that are exclusive to club members. The strategy, however, may not be entirely successful in achieving the goals and objectives as envisaged by the senior management of the company. The objective of the research was to establish what exactly relationship marketing is. Once having investigated the theory of relationship marketing, the objective of the research was to establish what the goals of the management at Morkels were and whether or not these goals were met. The methodology of the research was, firstly, to conduct a literature survey on relationship marketing. In particular the study of literature focused on the theory related to the retail market focussing essentially where similar marketing strategies had been investigated. A variety of aspects of relationship marketing and strategies that had previously been implemented were then examined. The literature survey also considered the way in which a successful strategy of relationship-marketing should be motivated, planned, implemented and followed through. Secondly the research established what the goals and objectives of the management of Morkels were by means of an investigation into the policies and manuals of the relationship-marketing department. Finally a questionnaire was disseminated to the senior management of Morkels to establish what they considered to be the needs and opinions of the customers of the Garden Route Area. A second questionnaire with similar questions was also submitted to a sample of club members. This was done to establish the opinions of both groups. The major findings of the research were that Morkels is experiencing a degree of success with its relationship-marketing strategy. The research findings also revealed that opinions of the customers and the management of Morkels do not concur on a number of issues. These differences and the most important factors were discussed and recommendations were made to management.
- Full Text:
- Date Issued: 2003
The development of a model to estimate the cost for the provision of free basic water before the implementation of a water project
- Authors: Gillmer, Ir Ronald
- Date: 2003
- Subjects: Water-supply, rural -- South Africa -- Costs , Water-supply, rural -- South Africa -- Government policy
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10874 , http://hdl.handle.net/10948/222 , Water-supply, rural -- South Africa -- Costs , Water-supply, rural -- South Africa -- Government policy
- Description: This research study addresses the problem of whether local government can afford free basic water in rural areas. To achieve this objective a comprehensive literature study was performed, which included: · Lessons in water sector approaches from international experience and how these experiences compare with the South African situation. 1.The current basic water supply legislation in South Africa and how this legislation affects the subsidy arrangements and the financing of free basic water. 2.The operation and maintenance cost and the benefits of effective operation and maintenance of water supply schemes. A model was developed that could estimate the cost of rural water supply per household per month from the operation and maintenance data that was collected over a period of twenty-two months from a water supply scheme. As part of the provision of free basic water, a nine-step flow chart was developed to determine rural water operation and maintenance subsidy and a free basic water policy to help local government make informed decisions. The model was tested on different water supply schemes to verify the accuracy of the models estimation of the cost of rural water supply per household per month. The information obtained from the literature and from the test of the model resulted in various recommendations and conclusions.
- Full Text:
- Date Issued: 2003
- Authors: Gillmer, Ir Ronald
- Date: 2003
- Subjects: Water-supply, rural -- South Africa -- Costs , Water-supply, rural -- South Africa -- Government policy
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10874 , http://hdl.handle.net/10948/222 , Water-supply, rural -- South Africa -- Costs , Water-supply, rural -- South Africa -- Government policy
- Description: This research study addresses the problem of whether local government can afford free basic water in rural areas. To achieve this objective a comprehensive literature study was performed, which included: · Lessons in water sector approaches from international experience and how these experiences compare with the South African situation. 1.The current basic water supply legislation in South Africa and how this legislation affects the subsidy arrangements and the financing of free basic water. 2.The operation and maintenance cost and the benefits of effective operation and maintenance of water supply schemes. A model was developed that could estimate the cost of rural water supply per household per month from the operation and maintenance data that was collected over a period of twenty-two months from a water supply scheme. As part of the provision of free basic water, a nine-step flow chart was developed to determine rural water operation and maintenance subsidy and a free basic water policy to help local government make informed decisions. The model was tested on different water supply schemes to verify the accuracy of the models estimation of the cost of rural water supply per household per month. The information obtained from the literature and from the test of the model resulted in various recommendations and conclusions.
- Full Text:
- Date Issued: 2003
Versions of confinement: Melville's bodies and the psychology of conquest
- Authors: Goddard, Kevin Graham
- Date: 2003
- Subjects: Melville, Herman, 1819-1891 -- Criticism and interpretation Human body in literature
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2216 , http://hdl.handle.net/10962/d1002259
- Description: This thesis explores aspects of Melville’s presentation of both the whale and the human bodies in Moby-Dick and human bodies in other important novels. It argues that Melville uses his presentation of bodies to explore some of the versions of confinement those bodies experience, and by doing so, analyses the psychology which subtends that confinement. Throughout Melville’s works bodies are confined, both within literal spatial limits and by the psychology which creates and/or accepts these spatial limits. The thesis argues that perhaps the most important version of bodily confinement Melville addresses is the impulse to conquer bodies, both that of the other and one’s own. It adopts a largely psychoanalytic approach to interpreting bodies and their impulse to conquer, so that the body is seen to figure both in its actions and its external appearance the operations of the inner psyche. The figure of the body is equally prevalent in Melville’s exploration of nationalist conquest, where, as with Manifest Destiny and antebellum expansionism, the psychological and physical lack experienced by characters can be read as motivating factors in the ideology of conquest. A final important strand of the thesis is its argument in favour of a gradual shift in Melville’s interpretation of the value and possibility of genuine communion between human beings and between humans and the whale. One may read Typee as an attempt by Melville to explore the possibility of a this-worldly utopia in which human beings can return to a version of primitive interconnectedness. This exploration may be seen to be extended in Moby-Dick, particularly in Ishmael’s attempts to find communion with others and in some moments of encounter with the whales. The thesis uses phenomenology as a theory to interpret what Melville is trying to suggest in these moments of encounter. However, it argues, finally, that such encounter, or ‘intersubjectivity’ is eventually jettisoned, especially in the works after Moby-Dick. By the end of Melville’s life and work, any hope of an intersubjective utopia he may have harboured as a younger man have been removed in favour of a refusal actually to assert any final ‘truth’ about social, political or even religious experience. Billy Budd, his last body, is hanged, and his final word is silence.
- Full Text:
- Date Issued: 2003
- Authors: Goddard, Kevin Graham
- Date: 2003
- Subjects: Melville, Herman, 1819-1891 -- Criticism and interpretation Human body in literature
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2216 , http://hdl.handle.net/10962/d1002259
- Description: This thesis explores aspects of Melville’s presentation of both the whale and the human bodies in Moby-Dick and human bodies in other important novels. It argues that Melville uses his presentation of bodies to explore some of the versions of confinement those bodies experience, and by doing so, analyses the psychology which subtends that confinement. Throughout Melville’s works bodies are confined, both within literal spatial limits and by the psychology which creates and/or accepts these spatial limits. The thesis argues that perhaps the most important version of bodily confinement Melville addresses is the impulse to conquer bodies, both that of the other and one’s own. It adopts a largely psychoanalytic approach to interpreting bodies and their impulse to conquer, so that the body is seen to figure both in its actions and its external appearance the operations of the inner psyche. The figure of the body is equally prevalent in Melville’s exploration of nationalist conquest, where, as with Manifest Destiny and antebellum expansionism, the psychological and physical lack experienced by characters can be read as motivating factors in the ideology of conquest. A final important strand of the thesis is its argument in favour of a gradual shift in Melville’s interpretation of the value and possibility of genuine communion between human beings and between humans and the whale. One may read Typee as an attempt by Melville to explore the possibility of a this-worldly utopia in which human beings can return to a version of primitive interconnectedness. This exploration may be seen to be extended in Moby-Dick, particularly in Ishmael’s attempts to find communion with others and in some moments of encounter with the whales. The thesis uses phenomenology as a theory to interpret what Melville is trying to suggest in these moments of encounter. However, it argues, finally, that such encounter, or ‘intersubjectivity’ is eventually jettisoned, especially in the works after Moby-Dick. By the end of Melville’s life and work, any hope of an intersubjective utopia he may have harboured as a younger man have been removed in favour of a refusal actually to assert any final ‘truth’ about social, political or even religious experience. Billy Budd, his last body, is hanged, and his final word is silence.
- Full Text:
- Date Issued: 2003
The potential of abalone stock enhancement in the Eastern Cape Province of South Africa
- Authors: Godfrey, Brian Peter
- Date: 2003
- Subjects: Abalones -- South Africa -- Eastern Cape , Abalone culture , Abalone fisheries -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5312 , http://hdl.handle.net/10962/d1005157 , Abalones -- South Africa -- Eastern Cape , Abalone culture , Abalone fisheries -- South Africa -- Eastern Cape
- Description: The largest abalone in South Africa, the perlemoen, Haliotis midae, occurs along approximately two-thirds of the country's coastline, but has only been the target of an extensive commercial fishery in the south-western part of South Africa. Large-scale illegal fishing has however proliferated throughout its entire range over the last 10–15 years, which has had serious effects on stock abundance and once productive populations are facing economic collapse. Abalone stock enhancement has been put forward as an addition or alternative to traditional fisheries management practices, which can potentially rehabilitate overfished abalone populations and enhance natural production. The aim of this project was to investigate the potential of abalone stock enhancement for managing an area in the Eastern Cape Province, which was being subjected to intense illegal fishing pressure. A research approach was adopted to investigate the scale and effects of this poaching and to investigate the survival of artificially cultured abalone seed in the natural environment. A model of a commercial-scale ranching operation was investigated to assess the economic feasibility of such a scheme. Analysis of poaching cases and research samples from Cape Recife indicated high levels of fishing effort that appeared to be causing the observed declines in emergent abalone abundance and average size. Poaching cases from Cape Recife contributed 32% of the total number of cases of known origin in the Eastern Cape Province from 1998–2002, with the majority of the cases (82%) originating from within the Port Elizabeth metropole. There was an exponential increase in the number of poaching cases in the Eastern Cape Province (r²=0.967) and Port Elizabeth over this period but actual annual total catch stabilized, particularly at Cape Recife, where estimates of CPUE declined significantly from 2000–2002 (p<0.001). The annual proportion of emergent abalone under the MLS from Cape Recife was always >85% in confiscations and research collections, and did not change significantly over the period of examination. Comparison of illegal catches with an adjacent site indicated that the emergent abalone population at Cape Recife had a significantly higher proportion of undersized emergent animals (p<0.001) and they were significantly smaller than the abalone from the closest site, Noordhoek, and other areas in Port Elizabeth from 2000–2002 (p<0.001). The apparent declines in emergent abalone abundance indicated by the poaching data were corroborated by sampling of emergent abalone abundance at Cape Recife. Numbers of abalone declined significantly from 125.6 to 53.8 per 20min count (p<0.001), from April 1998–October 2001 and density declined from 1.3 to 0.8m⁻² over a similar period (p<0.001). Juvenile density did not change over this period, although there were significant differences in density observed between two different habitats (p<0.001). Initial releases of cultured juvenile abalone showed that they could be distinguished from their wild counterparts for at least a year after release, by their different shell colouration. Short-term, small-scale trials (7–10 days) using animals between 17 and 30mm SL had mean survival rates of 64–82% (mean 70.4%) and the effect of size on survival was not significant in most cases, although the power to detect differences was low. Attempts to measure the effect of habitat on survival were not conclusive, although refuges under sea urchins appeared to be favoured by both seed and wild abalone, although urchins were not an absolute requirement for survival. Similar medium-term trials (31–74 days) in sheltered sites yielded mean returns of 53.1% using 25mm SL animals and similar trials in a more exposed area had more variable survival rates of between 18.4 and 73.6%, after 25–27 days. A comparison between careful hand-seeding and surface-scattering seed release methods in the open-ocean habitat showed no significant differences in survival rate after 41 days. Larger seed survived significantly better than the smaller seed when scattered on the surface (p<0.0001) and the smaller seed survived significantly better when seeded carefully by hand onto the substrate (p<0.028). Further medium-term releases of large numbers of seed abalone, released using the surface-scattering method in open-ocean habitat, gave mean survival rates of 32.8% over periods of 83–114 days. Assessment of a seeding trial using release modules to seed juvenile animals in the open-ocean was hampered by poor sea conditions and difficult to search substrates, and a mean recovery rate of 3.1% was obtained for the sites that were sampled. Movement of seed was low in the more sheltered sites, and also appeared to be affected by the amount of available habitat. Growth of seed was measured using changes in shell colouration and there were significant differences between areas. An average growth of 1.6mm.month⁻¹ shell length was calculated for all areas. The potential for commercial scale abalone ranching to be used to enhance a territorial user right fishery was investigated using a model of economic feasibility. Internal rates of return of 30.3 and 36.9% were obtained from two harvest regimes using different harvest sizes. There was a high degree of risk associated with these figures owing to a lack of consistent seed survival rate estimates, and the input parameters, which are subject to variation, showed a significant effect on profitability. The operation of this type of ranching scheme is probably not economically feasible as a stand-alone operation but could probably be operated effectively in conjunction with an existing abalone farm. By adding a small wild catch component the profitability of a ranching scheme could be significantly improved. The results of the present study indicate that high levels of poaching at Cape Recife have led to declines in emergent abalone abundance, which will probably lead to stock collapse in the near future. This implies that fisheries managers have failed to fulfil the provisions of fisheries policy in South Africa. The present results from seeding trials show that cultured juveniles can survive and make a contribution to overall stock abundance. Furthermore, while there are obstacles to economic feasibility, commercial ranching has the potential to be a valuable addition to current abalone management strategy.
- Full Text:
- Date Issued: 2003
- Authors: Godfrey, Brian Peter
- Date: 2003
- Subjects: Abalones -- South Africa -- Eastern Cape , Abalone culture , Abalone fisheries -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5312 , http://hdl.handle.net/10962/d1005157 , Abalones -- South Africa -- Eastern Cape , Abalone culture , Abalone fisheries -- South Africa -- Eastern Cape
- Description: The largest abalone in South Africa, the perlemoen, Haliotis midae, occurs along approximately two-thirds of the country's coastline, but has only been the target of an extensive commercial fishery in the south-western part of South Africa. Large-scale illegal fishing has however proliferated throughout its entire range over the last 10–15 years, which has had serious effects on stock abundance and once productive populations are facing economic collapse. Abalone stock enhancement has been put forward as an addition or alternative to traditional fisheries management practices, which can potentially rehabilitate overfished abalone populations and enhance natural production. The aim of this project was to investigate the potential of abalone stock enhancement for managing an area in the Eastern Cape Province, which was being subjected to intense illegal fishing pressure. A research approach was adopted to investigate the scale and effects of this poaching and to investigate the survival of artificially cultured abalone seed in the natural environment. A model of a commercial-scale ranching operation was investigated to assess the economic feasibility of such a scheme. Analysis of poaching cases and research samples from Cape Recife indicated high levels of fishing effort that appeared to be causing the observed declines in emergent abalone abundance and average size. Poaching cases from Cape Recife contributed 32% of the total number of cases of known origin in the Eastern Cape Province from 1998–2002, with the majority of the cases (82%) originating from within the Port Elizabeth metropole. There was an exponential increase in the number of poaching cases in the Eastern Cape Province (r²=0.967) and Port Elizabeth over this period but actual annual total catch stabilized, particularly at Cape Recife, where estimates of CPUE declined significantly from 2000–2002 (p<0.001). The annual proportion of emergent abalone under the MLS from Cape Recife was always >85% in confiscations and research collections, and did not change significantly over the period of examination. Comparison of illegal catches with an adjacent site indicated that the emergent abalone population at Cape Recife had a significantly higher proportion of undersized emergent animals (p<0.001) and they were significantly smaller than the abalone from the closest site, Noordhoek, and other areas in Port Elizabeth from 2000–2002 (p<0.001). The apparent declines in emergent abalone abundance indicated by the poaching data were corroborated by sampling of emergent abalone abundance at Cape Recife. Numbers of abalone declined significantly from 125.6 to 53.8 per 20min count (p<0.001), from April 1998–October 2001 and density declined from 1.3 to 0.8m⁻² over a similar period (p<0.001). Juvenile density did not change over this period, although there were significant differences in density observed between two different habitats (p<0.001). Initial releases of cultured juvenile abalone showed that they could be distinguished from their wild counterparts for at least a year after release, by their different shell colouration. Short-term, small-scale trials (7–10 days) using animals between 17 and 30mm SL had mean survival rates of 64–82% (mean 70.4%) and the effect of size on survival was not significant in most cases, although the power to detect differences was low. Attempts to measure the effect of habitat on survival were not conclusive, although refuges under sea urchins appeared to be favoured by both seed and wild abalone, although urchins were not an absolute requirement for survival. Similar medium-term trials (31–74 days) in sheltered sites yielded mean returns of 53.1% using 25mm SL animals and similar trials in a more exposed area had more variable survival rates of between 18.4 and 73.6%, after 25–27 days. A comparison between careful hand-seeding and surface-scattering seed release methods in the open-ocean habitat showed no significant differences in survival rate after 41 days. Larger seed survived significantly better than the smaller seed when scattered on the surface (p<0.0001) and the smaller seed survived significantly better when seeded carefully by hand onto the substrate (p<0.028). Further medium-term releases of large numbers of seed abalone, released using the surface-scattering method in open-ocean habitat, gave mean survival rates of 32.8% over periods of 83–114 days. Assessment of a seeding trial using release modules to seed juvenile animals in the open-ocean was hampered by poor sea conditions and difficult to search substrates, and a mean recovery rate of 3.1% was obtained for the sites that were sampled. Movement of seed was low in the more sheltered sites, and also appeared to be affected by the amount of available habitat. Growth of seed was measured using changes in shell colouration and there were significant differences between areas. An average growth of 1.6mm.month⁻¹ shell length was calculated for all areas. The potential for commercial scale abalone ranching to be used to enhance a territorial user right fishery was investigated using a model of economic feasibility. Internal rates of return of 30.3 and 36.9% were obtained from two harvest regimes using different harvest sizes. There was a high degree of risk associated with these figures owing to a lack of consistent seed survival rate estimates, and the input parameters, which are subject to variation, showed a significant effect on profitability. The operation of this type of ranching scheme is probably not economically feasible as a stand-alone operation but could probably be operated effectively in conjunction with an existing abalone farm. By adding a small wild catch component the profitability of a ranching scheme could be significantly improved. The results of the present study indicate that high levels of poaching at Cape Recife have led to declines in emergent abalone abundance, which will probably lead to stock collapse in the near future. This implies that fisheries managers have failed to fulfil the provisions of fisheries policy in South Africa. The present results from seeding trials show that cultured juveniles can survive and make a contribution to overall stock abundance. Furthermore, while there are obstacles to economic feasibility, commercial ranching has the potential to be a valuable addition to current abalone management strategy.
- Full Text:
- Date Issued: 2003
The history of marine fish systematics in South Africa
- Authors: Gon, O (Ofer), 1949-
- Date: 2003
- Subjects: J.L.B. Smith Institute of Ichthyology Fishes -- Research -- South Africa -- History Fishes -- Catalogs and collections -- South Africa -- History Museums -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2599 , http://hdl.handle.net/10962/d1007800
- Description: South African marine fish collections and systematic research are relatively young, essentially a product of the 20th century. Their history in South Africa comprises three distinct periods: the emergence of fish collections (before 1895), the beginning of research (1895-1945) and modern research (1945-1999). From the outset of their arrival in South Africa in the mid-17th century, the European settlers of the Cape Colony supplemented their diet with fishes. Therefore it is not surprising that when natural history museums appeared in the 19th century fishes were among the first specimens they procured or received from the public. In these early days, fishes were acquired for display purposes and were curated together with other natural history specimens. There were no fish collections as such and, in many ways, the early history of South African fish collections closely followed the history of the institutions in which they were housed. Major political events in South Africa between 1850-1910 had little effect on the slow growth offish collections as the low influx of specimens from the public did not change. None of the museums did any active fish collecting and no fish research as such took place during these years. The second period in the growth of fish collections in South Africa was characterised by a general shift to collecting for research rather than display. It was also a period during which the need for aquatic research was recognized by and began to attract funding from the South African government, starting with the establishment of the Marine Biological Survey in Cape Town. However, with the exception of the Albany Museum's self-trained J.L.B. Smith, no trained marine fish systematists were working in museums either as curators or as researchers. In the first half of the 20"' century South Africa experienced the fast growth of the fishing industry, the development of academic and applied research in marine biology, and the thriving of sport fishing. These developments created a demand for well-trained professional ichthyologists. J.L.B. Smith was the first to fill this professional gap. The growth rate offish collections increased significantly through the interaction between museum scientists, such as Smith in Grahamstown and K.H. Barnard in Cape Town, with the fishing industry, government biologists and fisheries officers, and anglers. Barnard's review of the South African marine fish fauna was published in mid-I920s. The discovery of the first living coelacanth placed South African ichthyology and Smith on the international stage. The identification of this fish, made by a relatively inexperienced Smith, changed the way ichthyology has been viewed in South Africa. At the beginning of the third period, largely due to the establishment of the Council for Scientific and Industrial Research in 1945, science in South Africa underwent a process of reorganisation. As funding became more available museums were able to enlarge their research staff. Natural history museums hired qualified experts to conduct research and manage collections of specific groups of organisms. For the first time, trained ichthyologists started working in museums and initiated research projects that were the main contributors to the growth of fish collections around the country. Furthermore it was a period of consolidation offish collections resulting in two large marine fish collections, one at the South African Museum, Cape Town, and another at the J .L.B. Smith Institute of Ichthyology, Grahamstown. This period also witnessed the establishment of the latter as a research institute dedicated to the study of fishes and its rise to international prominence. The last 55 years at J.L.B. Smith Institute of Ichthyology can be divided into two distinct periods, 1945-1967 and 1968-1999, each consisting of similar elements of research work and objectives. These included the research and production of major reviews of the fish faunas of South Africa, the western Indian Ocean and the Southern Ocean, as well as research on the coelacanth. While in the former period the work was done by one scientist, J.L.B. Smith, the latter period has been characterised by collaborative projects including scientists from South Africa and abroad. As this history shows, the establishment of a viable, long-lasting collection is a lengthy process. For about 60 years the durability of fish collections depended on the enthusiasm and persistence of individual curators and scientists who were not ichthyologists. More often than not, enthusiasm disappeared when such individuals left their museums. This dependence existed until Rhodes University College established the Department of Ichthyology (1947) and the South African Museum created a post specifically for the curation of the fish collection (1957) and thus ensured continuity. The continuity of biosystematic research in South Africa has been a minor concern for the nation's systematists for decades. The threats to marine fish systematics have been of a financial, political and professional nature. The latter has been the most serious one because of the dearth of South Africans trained in marine fish systematics. After J.L.B. Smith's death in 1968 M.M. Smith had to work hard to convince the Council for Scientific and Industrial Research and Rhodes University that she could step into her late husband's shoes. Realizing that there was nobody to take over from her she initiated the first and only postgraduate programme in ichthyology in South Africa. The teaching started in the academic year of 1970171 at the J.L.B. Smith Institute of Ichthyology, but to date only one student has completed a thesis in marine fish systematics. Due to the government's transformation policy all the practising marine fish systematists in South Africa will be retiring in the course of the present decade. Consequently, if no aspiring, motivated students appear on the scene in the next couple of years marine fish systematics in this country will be in a deep crisis by the year 2010, possibly even earlier.
- Full Text:
- Date Issued: 2003
- Authors: Gon, O (Ofer), 1949-
- Date: 2003
- Subjects: J.L.B. Smith Institute of Ichthyology Fishes -- Research -- South Africa -- History Fishes -- Catalogs and collections -- South Africa -- History Museums -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2599 , http://hdl.handle.net/10962/d1007800
- Description: South African marine fish collections and systematic research are relatively young, essentially a product of the 20th century. Their history in South Africa comprises three distinct periods: the emergence of fish collections (before 1895), the beginning of research (1895-1945) and modern research (1945-1999). From the outset of their arrival in South Africa in the mid-17th century, the European settlers of the Cape Colony supplemented their diet with fishes. Therefore it is not surprising that when natural history museums appeared in the 19th century fishes were among the first specimens they procured or received from the public. In these early days, fishes were acquired for display purposes and were curated together with other natural history specimens. There were no fish collections as such and, in many ways, the early history of South African fish collections closely followed the history of the institutions in which they were housed. Major political events in South Africa between 1850-1910 had little effect on the slow growth offish collections as the low influx of specimens from the public did not change. None of the museums did any active fish collecting and no fish research as such took place during these years. The second period in the growth of fish collections in South Africa was characterised by a general shift to collecting for research rather than display. It was also a period during which the need for aquatic research was recognized by and began to attract funding from the South African government, starting with the establishment of the Marine Biological Survey in Cape Town. However, with the exception of the Albany Museum's self-trained J.L.B. Smith, no trained marine fish systematists were working in museums either as curators or as researchers. In the first half of the 20"' century South Africa experienced the fast growth of the fishing industry, the development of academic and applied research in marine biology, and the thriving of sport fishing. These developments created a demand for well-trained professional ichthyologists. J.L.B. Smith was the first to fill this professional gap. The growth rate offish collections increased significantly through the interaction between museum scientists, such as Smith in Grahamstown and K.H. Barnard in Cape Town, with the fishing industry, government biologists and fisheries officers, and anglers. Barnard's review of the South African marine fish fauna was published in mid-I920s. The discovery of the first living coelacanth placed South African ichthyology and Smith on the international stage. The identification of this fish, made by a relatively inexperienced Smith, changed the way ichthyology has been viewed in South Africa. At the beginning of the third period, largely due to the establishment of the Council for Scientific and Industrial Research in 1945, science in South Africa underwent a process of reorganisation. As funding became more available museums were able to enlarge their research staff. Natural history museums hired qualified experts to conduct research and manage collections of specific groups of organisms. For the first time, trained ichthyologists started working in museums and initiated research projects that were the main contributors to the growth of fish collections around the country. Furthermore it was a period of consolidation offish collections resulting in two large marine fish collections, one at the South African Museum, Cape Town, and another at the J .L.B. Smith Institute of Ichthyology, Grahamstown. This period also witnessed the establishment of the latter as a research institute dedicated to the study of fishes and its rise to international prominence. The last 55 years at J.L.B. Smith Institute of Ichthyology can be divided into two distinct periods, 1945-1967 and 1968-1999, each consisting of similar elements of research work and objectives. These included the research and production of major reviews of the fish faunas of South Africa, the western Indian Ocean and the Southern Ocean, as well as research on the coelacanth. While in the former period the work was done by one scientist, J.L.B. Smith, the latter period has been characterised by collaborative projects including scientists from South Africa and abroad. As this history shows, the establishment of a viable, long-lasting collection is a lengthy process. For about 60 years the durability of fish collections depended on the enthusiasm and persistence of individual curators and scientists who were not ichthyologists. More often than not, enthusiasm disappeared when such individuals left their museums. This dependence existed until Rhodes University College established the Department of Ichthyology (1947) and the South African Museum created a post specifically for the curation of the fish collection (1957) and thus ensured continuity. The continuity of biosystematic research in South Africa has been a minor concern for the nation's systematists for decades. The threats to marine fish systematics have been of a financial, political and professional nature. The latter has been the most serious one because of the dearth of South Africans trained in marine fish systematics. After J.L.B. Smith's death in 1968 M.M. Smith had to work hard to convince the Council for Scientific and Industrial Research and Rhodes University that she could step into her late husband's shoes. Realizing that there was nobody to take over from her she initiated the first and only postgraduate programme in ichthyology in South Africa. The teaching started in the academic year of 1970171 at the J.L.B. Smith Institute of Ichthyology, but to date only one student has completed a thesis in marine fish systematics. Due to the government's transformation policy all the practising marine fish systematists in South Africa will be retiring in the course of the present decade. Consequently, if no aspiring, motivated students appear on the scene in the next couple of years marine fish systematics in this country will be in a deep crisis by the year 2010, possibly even earlier.
- Full Text:
- Date Issued: 2003
A study of the structural geology of the Witteberg Group and lowermost Karoo Supergroup, Darlington Dam, Jansenville District, Eastern Cape
- Goossens, Angelique Emily Maria
- Authors: Goossens, Angelique Emily Maria
- Date: 2003
- Subjects: Folds (Geology) -- South Africa -- Eastern Cape , Faults (Geology) -- South Africa -- Eastern Cape , Geology, Structural -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:11071 , http://hdl.handle.net/10948/291 , Folds (Geology) -- South Africa -- Eastern Cape , Faults (Geology) -- South Africa -- Eastern Cape , Geology, Structural -- South Africa -- Eastern Cape
- Description: A number of outcrops of the Witteberg Group and lowermost Karoo Supergroup rocks were studied in the area south of the Darlington Dam, Jansenville District, with the aim of documenting structural characteristics of the area. All lithologies are folded with fold styles varying from gentle to near isoclinal (based on interlimb angle). Fold axes are either sub-horizontal or plunging at gentle to moderate angles whereas axial planes dip gently to vertically (predominantly steep to sub-vertical). Folds verge predominantly towards the north but where southward verging they are associated with faulting or strongly folded areas. Folds plunge gently to the east-southeast and west-northwest. The area consists of a large anticlinorium with both first and second order folds occurring. Eastwest striking faults occur in the study area and are classified as normal, reverse and thrust faults. A study of the joint sets shows that there are four dominant joint directions, namely 18o, 33o, 97o and 107o (in order from least to most important). An interpretation of the tectonic history is presented in which the relationships between faults and folds show that faults formed during and after folding. Folding, and reverse and thrust faulting, occurred during the compressional events that formed the Cape Fold Belt, whereas the normal faults formed during the relaxation of these compressional forces or during the break-up of Gondwana.
- Full Text:
- Date Issued: 2003
- Authors: Goossens, Angelique Emily Maria
- Date: 2003
- Subjects: Folds (Geology) -- South Africa -- Eastern Cape , Faults (Geology) -- South Africa -- Eastern Cape , Geology, Structural -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:11071 , http://hdl.handle.net/10948/291 , Folds (Geology) -- South Africa -- Eastern Cape , Faults (Geology) -- South Africa -- Eastern Cape , Geology, Structural -- South Africa -- Eastern Cape
- Description: A number of outcrops of the Witteberg Group and lowermost Karoo Supergroup rocks were studied in the area south of the Darlington Dam, Jansenville District, with the aim of documenting structural characteristics of the area. All lithologies are folded with fold styles varying from gentle to near isoclinal (based on interlimb angle). Fold axes are either sub-horizontal or plunging at gentle to moderate angles whereas axial planes dip gently to vertically (predominantly steep to sub-vertical). Folds verge predominantly towards the north but where southward verging they are associated with faulting or strongly folded areas. Folds plunge gently to the east-southeast and west-northwest. The area consists of a large anticlinorium with both first and second order folds occurring. Eastwest striking faults occur in the study area and are classified as normal, reverse and thrust faults. A study of the joint sets shows that there are four dominant joint directions, namely 18o, 33o, 97o and 107o (in order from least to most important). An interpretation of the tectonic history is presented in which the relationships between faults and folds show that faults formed during and after folding. Folding, and reverse and thrust faulting, occurred during the compressional events that formed the Cape Fold Belt, whereas the normal faults formed during the relaxation of these compressional forces or during the break-up of Gondwana.
- Full Text:
- Date Issued: 2003
Structural and synthetic investigations of diterpenoid natural products from southern African marine invertebrates
- Authors: Gray, Christopher Anthony
- Date: 2003
- Subjects: Ethyl acetoacetate Diterpenes Limpets -- South Africa Natural products -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4349 , http://hdl.handle.net/10962/d1005014
- Description: This thesis is divided into two parts. The first part (Chapter Two) documents a bioassay guided investigation of the ethyl acetate extracts of four marine invertebrates from Mozambique (an Irciniid sponge, a Haliclona sp. sponge, an ascidian tentatively identified as Diplosoma sp., and the soft coral Cladiella kashmani). Eight known compounds [ilimaquinone (2.1), renierone (2.7), N-formyl-1,2-dihydrorenierone (2.8), 1,6-dimethyl-7-methoxy-5,8-dihydroisoquinoline-5,8-dione (2.9), mimosamycin (2.10) 7Z-allylidene-5-hydroxy-7,7a-dihydro-2H-cyclopenta[b]pyran-6-one (2.11), flaccidoxide (2.18) and 11S,12S-epoxycembra-1Z,3E,7E-trien-14S-ol (2.19)] and a new diterpene [13S,14R-diacetoxy-11S,12R-epoxycembra-1Z,3E,7E-triene (2.20)] were isolated and identified using standard spectroscopic techniques. Anomalies in the published spectral data of 2.1 and 2.8 were exposed and corrected, and the absolute stereochemistry of the cembrane diterpenes 2.18 and 2.20 established using the modified Mosher’s method. The comparative activities of the nine natural products against four cancer cell lines (A549, LOX, OVCAR3, SNB19) are reported. The second part of the thesis (Chapter Three – Chapter Six) is concerned with an ecological, structural and synthetic study of diterpenes from the endemic South African pulmonate limpet Trimusculus costatus. Two new labdane diterpenes [6b,7a-diacetoxylabda-8,13E-dien-15-ol (3.10) and 2a,6b,7a-triacetoxylabda-8,13E-dien-15-ol (3.11)] were isolated from T. costatus and evaluated for anti-feeding activity against the common predatory fish Pomadasys commersonnii. A strategy for the semi-synthesis of 3.10 from rhinocerotinoic acid (4.14), a diterpene reportedly present in the ubiquitous South African shrub Elytropappus rhinocerotis, was devised in order to allow further bioactivity tests to be performed and unequivocally assign the unknown absolute stereochemistry of the T. costatus metabolites. Attempts to isolate rhinocerotinoic acid from local specimens of Elytropappus rhinocerotis were unsuccessful, and as the repetition of a published synthesis of 4.14 from (-)-sclareol (4.15) gave rhinocerotinoic acid in unacceptably low yields with poor stereoselectivity, an improved synthesis of 4.14 is presented. Comprehensive studies using hispanone (5.1) as a model compound showed that 6,7-dioxygenated labda-8-enes could be prepared from compounds possessing a 7-oxo-labda-8-ene skeleton with some degree of stereocontrol. In the process, fourteen new hispanone analogues were prepared and most of these were tested for activity in a suite of ten agro-chemical assays. The novel compound 7b-hydroxy-9a-carbonitrile-15,16-epoxylabda-13(16),14-dien-6-one (5.34) exhibited significant activity against the crop fungus Phytophthora infestans and is currently being subjected to further agro-chemical tests. Unfortunately, the results from the oxygenation study performed on the model compound 5.1 could not be directly extrapolated to rhinocerotinoic acid. Attempts to prepare the naturally occurring 3.10 from 4.14 via an alternative route were unsuccessful but yielded an analogue of 3.10 in which the substituents at C-6 and C-7 are in a diequatorial rather than a diaxial configuration.
- Full Text:
- Date Issued: 2003
- Authors: Gray, Christopher Anthony
- Date: 2003
- Subjects: Ethyl acetoacetate Diterpenes Limpets -- South Africa Natural products -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4349 , http://hdl.handle.net/10962/d1005014
- Description: This thesis is divided into two parts. The first part (Chapter Two) documents a bioassay guided investigation of the ethyl acetate extracts of four marine invertebrates from Mozambique (an Irciniid sponge, a Haliclona sp. sponge, an ascidian tentatively identified as Diplosoma sp., and the soft coral Cladiella kashmani). Eight known compounds [ilimaquinone (2.1), renierone (2.7), N-formyl-1,2-dihydrorenierone (2.8), 1,6-dimethyl-7-methoxy-5,8-dihydroisoquinoline-5,8-dione (2.9), mimosamycin (2.10) 7Z-allylidene-5-hydroxy-7,7a-dihydro-2H-cyclopenta[b]pyran-6-one (2.11), flaccidoxide (2.18) and 11S,12S-epoxycembra-1Z,3E,7E-trien-14S-ol (2.19)] and a new diterpene [13S,14R-diacetoxy-11S,12R-epoxycembra-1Z,3E,7E-triene (2.20)] were isolated and identified using standard spectroscopic techniques. Anomalies in the published spectral data of 2.1 and 2.8 were exposed and corrected, and the absolute stereochemistry of the cembrane diterpenes 2.18 and 2.20 established using the modified Mosher’s method. The comparative activities of the nine natural products against four cancer cell lines (A549, LOX, OVCAR3, SNB19) are reported. The second part of the thesis (Chapter Three – Chapter Six) is concerned with an ecological, structural and synthetic study of diterpenes from the endemic South African pulmonate limpet Trimusculus costatus. Two new labdane diterpenes [6b,7a-diacetoxylabda-8,13E-dien-15-ol (3.10) and 2a,6b,7a-triacetoxylabda-8,13E-dien-15-ol (3.11)] were isolated from T. costatus and evaluated for anti-feeding activity against the common predatory fish Pomadasys commersonnii. A strategy for the semi-synthesis of 3.10 from rhinocerotinoic acid (4.14), a diterpene reportedly present in the ubiquitous South African shrub Elytropappus rhinocerotis, was devised in order to allow further bioactivity tests to be performed and unequivocally assign the unknown absolute stereochemistry of the T. costatus metabolites. Attempts to isolate rhinocerotinoic acid from local specimens of Elytropappus rhinocerotis were unsuccessful, and as the repetition of a published synthesis of 4.14 from (-)-sclareol (4.15) gave rhinocerotinoic acid in unacceptably low yields with poor stereoselectivity, an improved synthesis of 4.14 is presented. Comprehensive studies using hispanone (5.1) as a model compound showed that 6,7-dioxygenated labda-8-enes could be prepared from compounds possessing a 7-oxo-labda-8-ene skeleton with some degree of stereocontrol. In the process, fourteen new hispanone analogues were prepared and most of these were tested for activity in a suite of ten agro-chemical assays. The novel compound 7b-hydroxy-9a-carbonitrile-15,16-epoxylabda-13(16),14-dien-6-one (5.34) exhibited significant activity against the crop fungus Phytophthora infestans and is currently being subjected to further agro-chemical tests. Unfortunately, the results from the oxygenation study performed on the model compound 5.1 could not be directly extrapolated to rhinocerotinoic acid. Attempts to prepare the naturally occurring 3.10 from 4.14 via an alternative route were unsuccessful but yielded an analogue of 3.10 in which the substituents at C-6 and C-7 are in a diequatorial rather than a diaxial configuration.
- Full Text:
- Date Issued: 2003