The new initiative of the East African Cooperation : opportunities, challenges and prospects
- Authors: Kimemia, Peter Njau
- Date: 2000 , 2013-04-25
- Subjects: International economic relations , Africa, East -- Foreign economic relations , East African Co-operation , Africa, East -- Economic integration
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1041 , http://hdl.handle.net/10962/d1004743 , International economic relations , Africa, East -- Foreign economic relations , East African Co-operation , Africa, East -- Economic integration
- Description: The landmark inauguration of the East African Cooperation (EAC) on 14 March 1996 brought to the fore some key issues regarding regional economic integration in East Africa, particularly since it signalled the second attempt by Kenya, Uganda and Tanzania to form a regional economic bloc. The EAC's predecessor, the East African Community, had collapsed in 1977 in acrimonious circumstances. Prominent among the issues that led to the collapse of the East African Community was the perception of unequal gains from the integration scheme, with Uganda and Tanzania considering that disproportionate benefits were accruing to Kenya at their expense. With the new initiative, the question emerges as to whether the problems that caused the collapse of the Community will not beset the EAC and subject it to a similar fate. In an attempt to address this question, this study considers some of the theoretical issues relating to regional economic integration among countries at different levels of development, and attempts to provide an analysis of the new initiative of the EAC in the light of this theory and the history of the East African Community. The study also critically examines the objectives of the EAC and the integration strategy adopted by the three countries, and offers suggestions on the way forward. Among the arguments made in this thesis are that, contrary to the suggestions of orthodox static analysis, if the dynamic effects of integration are considered, then there may be important gains which may accrue to integrating states in the developing country context. It is also argued that different levels of development among integrating states need not necessarily be an impediment to economic integration. The study finds that, in spite of the enormous challenges facing the EAC, member states may be better off within the integration scheme than if they acted as individual units in a rapidly globalizing international system.
- Full Text:
- Date Issued: 2000
- Authors: Kimemia, Peter Njau
- Date: 2000 , 2013-04-25
- Subjects: International economic relations , Africa, East -- Foreign economic relations , East African Co-operation , Africa, East -- Economic integration
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1041 , http://hdl.handle.net/10962/d1004743 , International economic relations , Africa, East -- Foreign economic relations , East African Co-operation , Africa, East -- Economic integration
- Description: The landmark inauguration of the East African Cooperation (EAC) on 14 March 1996 brought to the fore some key issues regarding regional economic integration in East Africa, particularly since it signalled the second attempt by Kenya, Uganda and Tanzania to form a regional economic bloc. The EAC's predecessor, the East African Community, had collapsed in 1977 in acrimonious circumstances. Prominent among the issues that led to the collapse of the East African Community was the perception of unequal gains from the integration scheme, with Uganda and Tanzania considering that disproportionate benefits were accruing to Kenya at their expense. With the new initiative, the question emerges as to whether the problems that caused the collapse of the Community will not beset the EAC and subject it to a similar fate. In an attempt to address this question, this study considers some of the theoretical issues relating to regional economic integration among countries at different levels of development, and attempts to provide an analysis of the new initiative of the EAC in the light of this theory and the history of the East African Community. The study also critically examines the objectives of the EAC and the integration strategy adopted by the three countries, and offers suggestions on the way forward. Among the arguments made in this thesis are that, contrary to the suggestions of orthodox static analysis, if the dynamic effects of integration are considered, then there may be important gains which may accrue to integrating states in the developing country context. It is also argued that different levels of development among integrating states need not necessarily be an impediment to economic integration. The study finds that, in spite of the enormous challenges facing the EAC, member states may be better off within the integration scheme than if they acted as individual units in a rapidly globalizing international system.
- Full Text:
- Date Issued: 2000
Asymmetric α-alkylation reactions
- Authors: Klein, Rosalyn
- Date: 2000
- Subjects: Asymmetric synthesis , Alkylation , Chemical reactions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4405 , http://hdl.handle.net/10962/d1006710 , Asymmetric synthesis , Alkylation , Chemical reactions
- Description: A novel camphor-derived hydroxy ketal 138 has been developed as a crural auxiliary, and used to prepare a series of six carboxylic esters of increasing steric bulk. The α-benzylation of this series of esters was achieved with diastereoselectivities of 59 - 83% d. e. and in 39 - 48% material yield. These results compared very favourably with those obtained in earlier studies using a regioisomeric analogue as the chiral auxiliary. Computer.modelling studies of the putative enolate intermediate has provided some insight into the possible mode of electrophilic attack at the α-carbon and the roles of the ketal protecting group and the lithium cation in these asymmetric transformations. In a related investigation, based on earlier work, a camphor-derived imino lactone has provided convenient access to α-alkyl α-amino acids, the imino lactone serving as a masked glycine equivalent. Using straight chain primary alkyl iodides [RI; R = Me, Et, Pr, Bu, CH₃(CH₂)₄ and CH₃(CH₄)₅], alkylation of the potassium enolate of the camphor-derived imino lactone was effected with 54 - 89% d.e. and in 54 - 87% material yield. Four novel alkylated derivatives were synthesised using isopropyl iodide, sec-butyl iodide and allyl iodide, the latter reagent resulting in both the monoallylated and diallylated products. While very good diastereoselectivities were achieved (83 - 88% d. e.) in these reactions, the material yields from reaction with the secondary alkyl iodides were low (31- 35%) due, presumably, to their decreased electrophilicity. Computer modelling studies of the enolate were carried out and support the hypothesis of endo attack by the electrophile on the enolate intermediate. These studies also indicate the possibility of coordination of the postassium cation to the endocyclic ester oxygen, thus effectively anchoring the bulky cation away from the reaction site.
- Full Text:
- Date Issued: 2000
- Authors: Klein, Rosalyn
- Date: 2000
- Subjects: Asymmetric synthesis , Alkylation , Chemical reactions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4405 , http://hdl.handle.net/10962/d1006710 , Asymmetric synthesis , Alkylation , Chemical reactions
- Description: A novel camphor-derived hydroxy ketal 138 has been developed as a crural auxiliary, and used to prepare a series of six carboxylic esters of increasing steric bulk. The α-benzylation of this series of esters was achieved with diastereoselectivities of 59 - 83% d. e. and in 39 - 48% material yield. These results compared very favourably with those obtained in earlier studies using a regioisomeric analogue as the chiral auxiliary. Computer.modelling studies of the putative enolate intermediate has provided some insight into the possible mode of electrophilic attack at the α-carbon and the roles of the ketal protecting group and the lithium cation in these asymmetric transformations. In a related investigation, based on earlier work, a camphor-derived imino lactone has provided convenient access to α-alkyl α-amino acids, the imino lactone serving as a masked glycine equivalent. Using straight chain primary alkyl iodides [RI; R = Me, Et, Pr, Bu, CH₃(CH₂)₄ and CH₃(CH₄)₅], alkylation of the potassium enolate of the camphor-derived imino lactone was effected with 54 - 89% d.e. and in 54 - 87% material yield. Four novel alkylated derivatives were synthesised using isopropyl iodide, sec-butyl iodide and allyl iodide, the latter reagent resulting in both the monoallylated and diallylated products. While very good diastereoselectivities were achieved (83 - 88% d. e.) in these reactions, the material yields from reaction with the secondary alkyl iodides were low (31- 35%) due, presumably, to their decreased electrophilicity. Computer modelling studies of the enolate were carried out and support the hypothesis of endo attack by the electrophile on the enolate intermediate. These studies also indicate the possibility of coordination of the postassium cation to the endocyclic ester oxygen, thus effectively anchoring the bulky cation away from the reaction site.
- Full Text:
- Date Issued: 2000
An evaluation of the life science curriculum in Namibia and its development through stakeholders' perceptions of ʺlearner centred educationʺ
- Authors: Kristensen, Jesper Olsson
- Date: 2000
- Subjects: Life science project Curriculum evaluation -- Namibia Environmental education Educational change -- Namibia Life sciences -- Study and teaching -- Evaluation
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1527 , http://hdl.handle.net/10962/d1003409
- Description: Following Independence in 1991 Namibia embarked on a major reform of the entire education system. The reform was perceived as a way of redressing the apartheid legacy and bringing about a democratic learner centred education for all. At the same time the reform was also seen as a prime vehicle to bring about sustainable development through incorporating relevant environmental education into various carrier subjects. One such carrier has been the subject Life Science, which is compulsory from Grade 8 to Grade 10. The Life Science Project was a joint venture between the Ministry of Education and Ibis, a Danish Development NGO, established to develop and support the implementation of Life Science in junior secondary schools. This half-thesis is an evaluation of the Life Science Project through an analysis of the central assumptions on which the Life Science curriculum is based and by investigating different stakeholders’ perceptions and understanding of the learner centred approach adopted by the curriculum. Three questions have guided this research: 1. Are there curriculum models that are more conducive for reform and change than others? 2. Do stakeholders and curriculum developers in Namibia understand the theory of social constructivism, and the systemic implications such an approach has for the education system? 3. Which approach to environmental education complements a transformative curriculum and the changes outlined in policy? From the research carried out in this half-thesis, it would appear that the Namibian education system and the Life Science curriculum suffers from what could be termed “ideological confusion”. Confusion in the sense that there are marked inconsistencies between policy and praxis, between the stated goals and aims of the reform and the curriculum designed to achieve these. This confusion is further exacerbated by various stakeholders’ different interpretations of both policy and the systemic implications the reform policy has on education. In this half-thesis I argue that embarking on an objectives driven model of curriculum cannot bring about change and transformation of the Namibian education system. I further argue that, by not having considered and implemented the necessary systemic changes to the education system, Namibia has, in fact, developed a child centred education system which is fundamentally different from a learner centred education system. Finally, I argue that environmental education, through the subject Life Science, set within an objectives driven, Child Centred Education system is inappropriate for and unable to address the need for developing an environmentally literate citizenry who are able to take informed decisions in order to address the environmental crisis and bring forth a more sustainable future.
- Full Text:
- Date Issued: 2000
- Authors: Kristensen, Jesper Olsson
- Date: 2000
- Subjects: Life science project Curriculum evaluation -- Namibia Environmental education Educational change -- Namibia Life sciences -- Study and teaching -- Evaluation
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1527 , http://hdl.handle.net/10962/d1003409
- Description: Following Independence in 1991 Namibia embarked on a major reform of the entire education system. The reform was perceived as a way of redressing the apartheid legacy and bringing about a democratic learner centred education for all. At the same time the reform was also seen as a prime vehicle to bring about sustainable development through incorporating relevant environmental education into various carrier subjects. One such carrier has been the subject Life Science, which is compulsory from Grade 8 to Grade 10. The Life Science Project was a joint venture between the Ministry of Education and Ibis, a Danish Development NGO, established to develop and support the implementation of Life Science in junior secondary schools. This half-thesis is an evaluation of the Life Science Project through an analysis of the central assumptions on which the Life Science curriculum is based and by investigating different stakeholders’ perceptions and understanding of the learner centred approach adopted by the curriculum. Three questions have guided this research: 1. Are there curriculum models that are more conducive for reform and change than others? 2. Do stakeholders and curriculum developers in Namibia understand the theory of social constructivism, and the systemic implications such an approach has for the education system? 3. Which approach to environmental education complements a transformative curriculum and the changes outlined in policy? From the research carried out in this half-thesis, it would appear that the Namibian education system and the Life Science curriculum suffers from what could be termed “ideological confusion”. Confusion in the sense that there are marked inconsistencies between policy and praxis, between the stated goals and aims of the reform and the curriculum designed to achieve these. This confusion is further exacerbated by various stakeholders’ different interpretations of both policy and the systemic implications the reform policy has on education. In this half-thesis I argue that embarking on an objectives driven model of curriculum cannot bring about change and transformation of the Namibian education system. I further argue that, by not having considered and implemented the necessary systemic changes to the education system, Namibia has, in fact, developed a child centred education system which is fundamentally different from a learner centred education system. Finally, I argue that environmental education, through the subject Life Science, set within an objectives driven, Child Centred Education system is inappropriate for and unable to address the need for developing an environmentally literate citizenry who are able to take informed decisions in order to address the environmental crisis and bring forth a more sustainable future.
- Full Text:
- Date Issued: 2000
An examination of the facilitatory role for environmental education of conservancies
- Authors: Law-Jackson, Danielle
- Date: 2000
- Subjects: Environmental education Nature conservation -- South Africa Wildlife conservation -- South Africa Conservation of natural resources -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1529 , http://hdl.handle.net/10962/d1003411
- Description: This study examines the possibilities within the conservancy movement for the facilitation of environmental education. By means of a case study approach, a conservancy in the Northern Cape and the conservancy movement within the Free State provinces are compared with a view to elucidating factors militating against and promoting the success of environmental education programmes. The current lack of research in isolated rural areas is discussed. Re-orientation of perspectives regarding the value of conservancy-based environmental education within governmental, academic and local circles is recommended.
- Full Text:
- Date Issued: 2000
- Authors: Law-Jackson, Danielle
- Date: 2000
- Subjects: Environmental education Nature conservation -- South Africa Wildlife conservation -- South Africa Conservation of natural resources -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1529 , http://hdl.handle.net/10962/d1003411
- Description: This study examines the possibilities within the conservancy movement for the facilitation of environmental education. By means of a case study approach, a conservancy in the Northern Cape and the conservancy movement within the Free State provinces are compared with a view to elucidating factors militating against and promoting the success of environmental education programmes. The current lack of research in isolated rural areas is discussed. Re-orientation of perspectives regarding the value of conservancy-based environmental education within governmental, academic and local circles is recommended.
- Full Text:
- Date Issued: 2000
South Africa's growth, employment and redistribution strategy in the context of structural adjustment programmes in the South
- Authors: Lehloesa, Thembinkosi L
- Date: 2000
- Subjects: Growth, Employment And Redistribution Programme (South Africa) , South Africa -- Economic policy , South Africa -- Politics and government -- 1989-1994
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2794 , http://hdl.handle.net/10962/d1003004 , Growth, Employment And Redistribution Programme (South Africa) , South Africa -- Economic policy , South Africa -- Politics and government -- 1989-1994
- Description: This study is a contribution to the ongoing debate concerning the future of South Africa’s macro-economic policy known as the Growth, Employment and Redistribution (GEAR) strategy. The study attempts to draw parallels between the GEAR macro-economic policy framework and structural adjustment programmes in the South. By making use of this comparison, the study argues that the outcome of the GEAR will be no different from structural adjustment programmes in that it will fail to reduce poverty and cause government to meet the basic needs of the people. These conclusions are drawn from the fact that the GEAR policy is premised on the faith that the market is capable of redistributing income and wealth, and providing people with their basic needs.
- Full Text:
- Date Issued: 2000
- Authors: Lehloesa, Thembinkosi L
- Date: 2000
- Subjects: Growth, Employment And Redistribution Programme (South Africa) , South Africa -- Economic policy , South Africa -- Politics and government -- 1989-1994
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2794 , http://hdl.handle.net/10962/d1003004 , Growth, Employment And Redistribution Programme (South Africa) , South Africa -- Economic policy , South Africa -- Politics and government -- 1989-1994
- Description: This study is a contribution to the ongoing debate concerning the future of South Africa’s macro-economic policy known as the Growth, Employment and Redistribution (GEAR) strategy. The study attempts to draw parallels between the GEAR macro-economic policy framework and structural adjustment programmes in the South. By making use of this comparison, the study argues that the outcome of the GEAR will be no different from structural adjustment programmes in that it will fail to reduce poverty and cause government to meet the basic needs of the people. These conclusions are drawn from the fact that the GEAR policy is premised on the faith that the market is capable of redistributing income and wealth, and providing people with their basic needs.
- Full Text:
- Date Issued: 2000
The experience of multi-cultural communication within a South African organization
- Authors: Lesch, Anthea M
- Date: 2000
- Subjects: Intercultural communication -- South Africa , Communication in management -- South Africa , Communication in personnel management -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:3008 , http://hdl.handle.net/10962/d1002517 , Intercultural communication -- South Africa , Communication in management -- South Africa , Communication in personnel management -- South Africa
- Description: This research study was conducted in an attempt to explore the experience of multicultural communication within a South African organization. To this end employees, representing both Black and White culture, within a South African organization in the throes of transformation, were accessed. A model of managing diversity, focussing on the personal, interpersonal and organizational levels, was utilized in an attempt to uncover the nature of the experience of multi-cultural communication within Company X. A qualitative research design, and more specifically the case study method was employed in this study. Consistent with the case study approach a number of data sources were accessed. The primary data source consisted of a 3-stage interview process. Other data sources included documentary sources and company publications. By accessing multiple data sources, the researcher attempted to gain a holistic understanding of the experience of multi-cultural communication. It was found that the societal context of our post-Apartheid society exercises a profound influence on multi-cultural communication. Under Apartheid cultural separation was promoted. Diverse peoples thus have little common basis for interaction and view each other with skepticism and distrust. This exercises an effect on the personal and organizational levels of the managing diversity model. Influences at the personal level relate to the cultural paradigms of the individuals which provide the rules governing interactions and affect judgements of acceptable and unacceptable behaviours. Issues at the organizational level relate to its structures and policies which are still based on the “white is right ideology”. These issues, in turn, affect the interpersonal level of managing diversity, i.e., where the interactions occur, causing “communication short circuits” within the process of multi-cultural communication. In order to deal with failed multi-cultural communication, the individuals have developed a number of coping strategies. The results of the study indicate that both the organization and its employees share a responsibility for creating an environment that will facilitate effective multi-cultural communication.
- Full Text:
- Date Issued: 2000
- Authors: Lesch, Anthea M
- Date: 2000
- Subjects: Intercultural communication -- South Africa , Communication in management -- South Africa , Communication in personnel management -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:3008 , http://hdl.handle.net/10962/d1002517 , Intercultural communication -- South Africa , Communication in management -- South Africa , Communication in personnel management -- South Africa
- Description: This research study was conducted in an attempt to explore the experience of multicultural communication within a South African organization. To this end employees, representing both Black and White culture, within a South African organization in the throes of transformation, were accessed. A model of managing diversity, focussing on the personal, interpersonal and organizational levels, was utilized in an attempt to uncover the nature of the experience of multi-cultural communication within Company X. A qualitative research design, and more specifically the case study method was employed in this study. Consistent with the case study approach a number of data sources were accessed. The primary data source consisted of a 3-stage interview process. Other data sources included documentary sources and company publications. By accessing multiple data sources, the researcher attempted to gain a holistic understanding of the experience of multi-cultural communication. It was found that the societal context of our post-Apartheid society exercises a profound influence on multi-cultural communication. Under Apartheid cultural separation was promoted. Diverse peoples thus have little common basis for interaction and view each other with skepticism and distrust. This exercises an effect on the personal and organizational levels of the managing diversity model. Influences at the personal level relate to the cultural paradigms of the individuals which provide the rules governing interactions and affect judgements of acceptable and unacceptable behaviours. Issues at the organizational level relate to its structures and policies which are still based on the “white is right ideology”. These issues, in turn, affect the interpersonal level of managing diversity, i.e., where the interactions occur, causing “communication short circuits” within the process of multi-cultural communication. In order to deal with failed multi-cultural communication, the individuals have developed a number of coping strategies. The results of the study indicate that both the organization and its employees share a responsibility for creating an environment that will facilitate effective multi-cultural communication.
- Full Text:
- Date Issued: 2000
Implications of current labour legislation for small, medium and micro-enterprises with regard to procuring government contracts
- Authors: Long, Hylton Ernest
- Date: 2000
- Subjects: Small business -- Law and legislation -- South Africa , Small business -- South Africa -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10836 , http://hdl.handle.net/10948/29 , Small business -- Law and legislation -- South Africa , Small business -- South Africa -- Management
- Description: The research problem addressed in this study is to determine what affect current labour legislation has on small, medium and micro-enterprises (SMME’s), in particular with regard to the procuring of Government contracts. To achieve this objective a literature study was undertaken to ascertain what knowledgeable people believed was the affects of labour legislation on SMME’s. The literature study included all relevant labour legislation promulgated by the Government since 1994 The literature study was then used to develop a questionnaire to test the degree to which SMME’s, operating in the Municipal areas of East London and King Williams Town, abided by the relevant labour legislation. The empirical results, in general, indicated a strong adherence to labour legislation. Those organisations that had not strictly adhered to labour legislation were, in most instances, not successful in securing contracts offered by Government or parastatals. The results indicated that all the role-players, namely businesses, trade unions and knowledgeable people have valid arguments both for and against labour legislation. Each group, is however, still concerned and suspicious that in one way or another, they will be placed at a disadvantage with respect to the others positions, and this places a serious strain on the South African economy.
- Full Text:
- Date Issued: 2000
- Authors: Long, Hylton Ernest
- Date: 2000
- Subjects: Small business -- Law and legislation -- South Africa , Small business -- South Africa -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10836 , http://hdl.handle.net/10948/29 , Small business -- Law and legislation -- South Africa , Small business -- South Africa -- Management
- Description: The research problem addressed in this study is to determine what affect current labour legislation has on small, medium and micro-enterprises (SMME’s), in particular with regard to the procuring of Government contracts. To achieve this objective a literature study was undertaken to ascertain what knowledgeable people believed was the affects of labour legislation on SMME’s. The literature study included all relevant labour legislation promulgated by the Government since 1994 The literature study was then used to develop a questionnaire to test the degree to which SMME’s, operating in the Municipal areas of East London and King Williams Town, abided by the relevant labour legislation. The empirical results, in general, indicated a strong adherence to labour legislation. Those organisations that had not strictly adhered to labour legislation were, in most instances, not successful in securing contracts offered by Government or parastatals. The results indicated that all the role-players, namely businesses, trade unions and knowledgeable people have valid arguments both for and against labour legislation. Each group, is however, still concerned and suspicious that in one way or another, they will be placed at a disadvantage with respect to the others positions, and this places a serious strain on the South African economy.
- Full Text:
- Date Issued: 2000
Analysis of strategies used by an organisation to manage conflict
- Authors: Lourens, Ann Sharon
- Date: 2000
- Subjects: Conflict management , Negotiation in business , Mediation
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10828 , http://hdl.handle.net/10948/18 , Conflict management , Negotiation in business , Mediation
- Description: This research study addresses the problem of determining the strategies that can be used to manage conflict effectively. To achieve this objective a comprehensive literature study was performed to determine the views on conflict and various models of conflict. The study also included the reasons for and sources of conflict and the effects of conflict on an organisation. The next step was to identify the conflict management strategies that were revealed by the literature study. The appropriate conflict handling styles, how to improve organisational practices and special rules and structures were discussed as well as various suggestions from different authors on how to resolve a conflict situation. Based on the information obtained from the literature study a model was developed to serve as a guide to organisations to manage conflict effectively. Managers from a specific organisation were requested to complete questionnaires in order to determine the strategies used by their organisation to manage conflict. The questionnaire was developed in accordance with the findings from the research. The answers of the respondents were analysed and compared to the findings of the literature study. The information obtained from the literature study and from the respondents resulted in various recommendations and conclusions. The previously mentioned model that was developed was applied to the organisation, specifically addressing the pertinent issues as indicated by the respondents.
- Full Text:
- Date Issued: 2000
- Authors: Lourens, Ann Sharon
- Date: 2000
- Subjects: Conflict management , Negotiation in business , Mediation
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10828 , http://hdl.handle.net/10948/18 , Conflict management , Negotiation in business , Mediation
- Description: This research study addresses the problem of determining the strategies that can be used to manage conflict effectively. To achieve this objective a comprehensive literature study was performed to determine the views on conflict and various models of conflict. The study also included the reasons for and sources of conflict and the effects of conflict on an organisation. The next step was to identify the conflict management strategies that were revealed by the literature study. The appropriate conflict handling styles, how to improve organisational practices and special rules and structures were discussed as well as various suggestions from different authors on how to resolve a conflict situation. Based on the information obtained from the literature study a model was developed to serve as a guide to organisations to manage conflict effectively. Managers from a specific organisation were requested to complete questionnaires in order to determine the strategies used by their organisation to manage conflict. The questionnaire was developed in accordance with the findings from the research. The answers of the respondents were analysed and compared to the findings of the literature study. The information obtained from the literature study and from the respondents resulted in various recommendations and conclusions. The previously mentioned model that was developed was applied to the organisation, specifically addressing the pertinent issues as indicated by the respondents.
- Full Text:
- Date Issued: 2000
An informed community's perception of the impact of digital technology on the credibility of news photography
- Authors: Làzaro, Angelique Maria
- Date: 2000
- Subjects: Photojournalism -- Moral and ethical aspects , Digital media , Photojournalists , Photography -- Digital techniques
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3451 , http://hdl.handle.net/10962/d1002905 , Photojournalism -- Moral and ethical aspects , Digital media , Photojournalists , Photography -- Digital techniques
- Description: South African photojournalists’ perception of digital technology’s impact on the credibility of news photographs is investigated in this study. Digital technology has the capabilities to produce “manipulated” photographs that appear realistic and credible. Credibility is dependent on a variety of factors including codes of realism and codes of production, which fit conventional codes of photographic representation. Manipulation is the act of deviating from accepted codes of photographic representation that may jeopardise the credibility of news photography. This thesis proposes a new theoretical framework that encompasses existing theories of semiotics, ideology, naturalism, realism and credibility. These theories underpin the definitions and discussion on manipulation and credibility. A descriptive survey is used which attempts to discover photojournalists’ views towards credibility. This research draws on qualitative research methods using a largely qualitative questionnaire, which generates both qualitative and quantitative data. The questions are formulated around two case studies of digitally manipulated photographs. The trends and responses in the research data are connected and discussed. The findings of this study are discussed in terms of credibility, awareness of the digital changes, the reason for the changes, the role of a caption, deletion techniques and background changes. The empirical situation is analysed in relation to the theoretical discussions and this study’s theorisation of photographic representation.
- Full Text:
- Date Issued: 2000
- Authors: Làzaro, Angelique Maria
- Date: 2000
- Subjects: Photojournalism -- Moral and ethical aspects , Digital media , Photojournalists , Photography -- Digital techniques
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3451 , http://hdl.handle.net/10962/d1002905 , Photojournalism -- Moral and ethical aspects , Digital media , Photojournalists , Photography -- Digital techniques
- Description: South African photojournalists’ perception of digital technology’s impact on the credibility of news photographs is investigated in this study. Digital technology has the capabilities to produce “manipulated” photographs that appear realistic and credible. Credibility is dependent on a variety of factors including codes of realism and codes of production, which fit conventional codes of photographic representation. Manipulation is the act of deviating from accepted codes of photographic representation that may jeopardise the credibility of news photography. This thesis proposes a new theoretical framework that encompasses existing theories of semiotics, ideology, naturalism, realism and credibility. These theories underpin the definitions and discussion on manipulation and credibility. A descriptive survey is used which attempts to discover photojournalists’ views towards credibility. This research draws on qualitative research methods using a largely qualitative questionnaire, which generates both qualitative and quantitative data. The questions are formulated around two case studies of digitally manipulated photographs. The trends and responses in the research data are connected and discussed. The findings of this study are discussed in terms of credibility, awareness of the digital changes, the reason for the changes, the role of a caption, deletion techniques and background changes. The empirical situation is analysed in relation to the theoretical discussions and this study’s theorisation of photographic representation.
- Full Text:
- Date Issued: 2000
An investigation into short course accreditation through the South African Qualification Authority
- Authors: Mackenzie, Ian
- Date: 2000
- Subjects: Adult education -- South Africa Elementary education of adults -- South Africa School management and organization -- South Africa Guguletu Comprehensive School South African Qualifications Authority
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1600 , http://hdl.handle.net/10962/d1003482
- Description: This research project offers an analysis of the Adult Basic Education and Training Directorate in the Eastern Cape Province. The Bush Models are described and critiqued and then used as a tool for analysis. Other organisational models are described and used to add depth to the analysis. The choice of analysing the Adult Basic Education and Training Directorate comes both from a professional desire to know and understand this organisation more fully, as well as the importance of stressing that the definition of education organisations does not stop at school, colleges and universities, but includes the government bodies which are a key part of the sector. This assignment therefore explores both the features of a government department as well as the appropriateness of using Bush’s models in this context and draws on other organisational theory--Introduction.
- Full Text:
- Date Issued: 2000
- Authors: Mackenzie, Ian
- Date: 2000
- Subjects: Adult education -- South Africa Elementary education of adults -- South Africa School management and organization -- South Africa Guguletu Comprehensive School South African Qualifications Authority
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1600 , http://hdl.handle.net/10962/d1003482
- Description: This research project offers an analysis of the Adult Basic Education and Training Directorate in the Eastern Cape Province. The Bush Models are described and critiqued and then used as a tool for analysis. Other organisational models are described and used to add depth to the analysis. The choice of analysing the Adult Basic Education and Training Directorate comes both from a professional desire to know and understand this organisation more fully, as well as the importance of stressing that the definition of education organisations does not stop at school, colleges and universities, but includes the government bodies which are a key part of the sector. This assignment therefore explores both the features of a government department as well as the appropriateness of using Bush’s models in this context and draws on other organisational theory--Introduction.
- Full Text:
- Date Issued: 2000
Rural underdevelopment in the former Ciskei with specific reference to Glenmore Village
- Authors: Malila, Brett
- Date: 2000
- Subjects: Rural development -- South Africa -- Eastern Cape , Poverty -- South Africa -- Eastern Cape , Eastern Cape (South Africa) -- Social conditions , Glenmore (South Africa) -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3288 , http://hdl.handle.net/10962/d1003076 , Rural development -- South Africa -- Eastern Cape , Poverty -- South Africa -- Eastern Cape , Eastern Cape (South Africa) -- Social conditions , Glenmore (South Africa) -- Economic conditions
- Description: This thesis examines development changes that took place in Glenmore after 1994. To examine such change one needs to have a concise historical understanding of the situation in Glenmore before democracy. The aim of the work is to critique development at a local, rural level, pinpointing the major changes, if any, that came with the incorporation of the former homeland of Ciskei (and thus Glenmore village) with South Africa. These people were forcibly resettled in 1979 for political and economic reasons. Their situation then was one of dire poverty; it is argued here that even with democracy, their history of underdevelopment has continued. The reason for this continued underdevelopment is the structure of the former reserves. The overall political context has changed in South Africa but the most important aspect with regard to the development of the homelands: land, has not. At the central level, the government has churned out a wide variety of development policies, which due to the prevailing political and economic context of the times are fraught with inconsistencies. The example used here to show some of these inconsistencies is the 1997 White Paper on Land Reform. This confusion at the central level with regard to the perceived future of South Africa has managed to adversely affect the rural areas and their development. There very well might be policies in abundance to improve the life-world of the rural poor, but there are inconsistencies between this policy and actual practice. With regard to Glenmore the confusion in the present government’s central development policy is arguably the main reason for the underdevelopment of the village. The inconsistencies in policy such as the 1997 White Paper on Land Reform, have meant that the structure of the reserves has not changed. Vital issues such as land tenure and ownership have not been dealt with. The study thus shows that unless the structure of the homeland system which is predominantly based on issues of land, is changed, genuine social and economic development will not take place in areas like Glenmore.
- Full Text:
- Date Issued: 2000
- Authors: Malila, Brett
- Date: 2000
- Subjects: Rural development -- South Africa -- Eastern Cape , Poverty -- South Africa -- Eastern Cape , Eastern Cape (South Africa) -- Social conditions , Glenmore (South Africa) -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3288 , http://hdl.handle.net/10962/d1003076 , Rural development -- South Africa -- Eastern Cape , Poverty -- South Africa -- Eastern Cape , Eastern Cape (South Africa) -- Social conditions , Glenmore (South Africa) -- Economic conditions
- Description: This thesis examines development changes that took place in Glenmore after 1994. To examine such change one needs to have a concise historical understanding of the situation in Glenmore before democracy. The aim of the work is to critique development at a local, rural level, pinpointing the major changes, if any, that came with the incorporation of the former homeland of Ciskei (and thus Glenmore village) with South Africa. These people were forcibly resettled in 1979 for political and economic reasons. Their situation then was one of dire poverty; it is argued here that even with democracy, their history of underdevelopment has continued. The reason for this continued underdevelopment is the structure of the former reserves. The overall political context has changed in South Africa but the most important aspect with regard to the development of the homelands: land, has not. At the central level, the government has churned out a wide variety of development policies, which due to the prevailing political and economic context of the times are fraught with inconsistencies. The example used here to show some of these inconsistencies is the 1997 White Paper on Land Reform. This confusion at the central level with regard to the perceived future of South Africa has managed to adversely affect the rural areas and their development. There very well might be policies in abundance to improve the life-world of the rural poor, but there are inconsistencies between this policy and actual practice. With regard to Glenmore the confusion in the present government’s central development policy is arguably the main reason for the underdevelopment of the village. The inconsistencies in policy such as the 1997 White Paper on Land Reform, have meant that the structure of the reserves has not changed. Vital issues such as land tenure and ownership have not been dealt with. The study thus shows that unless the structure of the homeland system which is predominantly based on issues of land, is changed, genuine social and economic development will not take place in areas like Glenmore.
- Full Text:
- Date Issued: 2000
Environmental influences on the daytime vertical distribution of Cape hakes and implications for demersal trawl estimates of hake abundance off the west coast of South Africa
- Authors: Maree, R C
- Date: 2000
- Subjects: Hake , Fisheries -- Environmental aspects -- South Africa , Fisheries -- South Africa , Trawls and trawling
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5278 , http://hdl.handle.net/10962/d1005122
- Description: The demersal fishery off the west coast of South Africa experiences decreased catches per unit effort of hake, Merluccius capensis and M. paradoxus, following the onset of strong south easterly winds. Research has demonstrated that, during daylight hours, Cape hakes migrate vertically in the water column in response to strong south easterly winds, decreasing their availability to the bottom trawl. Hydroacoustic, trawl and environmental data were collected off the West Coast during both calm and wind-swept periods in an attempt to understand the forces that initiate this behaviour, its spatial variability and the implications for demersal trawl estimates of abundance. Near-bottom currents appear to be the primary factor influencing the vertical distribution of the demersal fish community, of which hake constitutes a large proportion, during daylight hours. Correlation between wind and near-bottom currents suggest that the poleward component of the currents increase in velocity within eight hours following the onset of south easterly winds. The fish avoid boundary layers where currents change direction and speed dramatically, and seem to concentrate in waters with relatively stable current regimes. This result questions the assumption of CPUE-based assessment models that hake availability to the bottom trawl is constant or varies randomly. The incorporation of acoustic assessment techniques to demersal surveys has potential, but may be most valuable by supplementing swept-area estimates of abundance, since the sampling efficiency of these methods varies within the water column. The incorporation of wind indices and gear performance data to Cape hake assessment models have been identified as useful considerations for the future.
- Full Text:
- Date Issued: 2000
- Authors: Maree, R C
- Date: 2000
- Subjects: Hake , Fisheries -- Environmental aspects -- South Africa , Fisheries -- South Africa , Trawls and trawling
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5278 , http://hdl.handle.net/10962/d1005122
- Description: The demersal fishery off the west coast of South Africa experiences decreased catches per unit effort of hake, Merluccius capensis and M. paradoxus, following the onset of strong south easterly winds. Research has demonstrated that, during daylight hours, Cape hakes migrate vertically in the water column in response to strong south easterly winds, decreasing their availability to the bottom trawl. Hydroacoustic, trawl and environmental data were collected off the West Coast during both calm and wind-swept periods in an attempt to understand the forces that initiate this behaviour, its spatial variability and the implications for demersal trawl estimates of abundance. Near-bottom currents appear to be the primary factor influencing the vertical distribution of the demersal fish community, of which hake constitutes a large proportion, during daylight hours. Correlation between wind and near-bottom currents suggest that the poleward component of the currents increase in velocity within eight hours following the onset of south easterly winds. The fish avoid boundary layers where currents change direction and speed dramatically, and seem to concentrate in waters with relatively stable current regimes. This result questions the assumption of CPUE-based assessment models that hake availability to the bottom trawl is constant or varies randomly. The incorporation of acoustic assessment techniques to demersal surveys has potential, but may be most valuable by supplementing swept-area estimates of abundance, since the sampling efficiency of these methods varies within the water column. The incorporation of wind indices and gear performance data to Cape hake assessment models have been identified as useful considerations for the future.
- Full Text:
- Date Issued: 2000
Development of a Human Resource development strategy for the Border-Kei motor industry cluster
- Authors: Maritz, Andre
- Date: 2000
- Subjects: Manpower policy , Automobile industry and trade -- South Africa , Automobile industry and trade -- Management , Personnel management -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10832 , http://hdl.handle.net/10948/23 , Manpower policy , Automobile industry and trade -- South Africa , Automobile industry and trade -- Management , Personnel management -- South Africa
- Description: DaimlerChrysler’s investment of R 1.4 billion in its East London Plant has resulted in the formation and development of an industry cluster, with DaimlerChrysler as the main industry driver. The rest of the cluster is made up of suppliers to the motor industry, as well as organisations involved in attracting and stimulating economic development in the region. The investment by DaimlerChrysler signalled the entry of DaimlerChrysler South Africa (DCSA) into global markets, supplying right-hand drive C-Class vehicles to the rest of the world. As a global player, world-class quality standards are expected of DCSA and, in turn, their suppliers. World-Class skills are therefore expected of the employees from all of the organisations within the cluster. This factor poses a challenge to South African organisations who are subjected to and challenged by the legislation that seeks to address and correct the societal imbalance of the past. The research problem addressed in this study was two-fold. The first objective was to determine whether or not there was a competitive advantage to be gained by being part of an industry cluster. The second objective was to determine how suppliers to DCSA from within the cluster developed world-class skills despite the constraints imposed upon them by South African legislation. To achieve these objectives, a theoretical study was conducted on existing conditions within clusters worldwide, as well as on methods being implemented by global organisations to develop world-class skills. An empirical study, covering the topics of competitive advantage and developing world-class skills, was developed and sent to suppliers of DCSA to test the degree of concurrence between methods implemented in the Border-Kei Motor Industry Cluster and global organisations elsewhere in the world. The results of the empirical study indicated a strong concurrence in many of the factors, and essentially only differed in instances where a cluster was more developed.
- Full Text:
- Date Issued: 2000
- Authors: Maritz, Andre
- Date: 2000
- Subjects: Manpower policy , Automobile industry and trade -- South Africa , Automobile industry and trade -- Management , Personnel management -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10832 , http://hdl.handle.net/10948/23 , Manpower policy , Automobile industry and trade -- South Africa , Automobile industry and trade -- Management , Personnel management -- South Africa
- Description: DaimlerChrysler’s investment of R 1.4 billion in its East London Plant has resulted in the formation and development of an industry cluster, with DaimlerChrysler as the main industry driver. The rest of the cluster is made up of suppliers to the motor industry, as well as organisations involved in attracting and stimulating economic development in the region. The investment by DaimlerChrysler signalled the entry of DaimlerChrysler South Africa (DCSA) into global markets, supplying right-hand drive C-Class vehicles to the rest of the world. As a global player, world-class quality standards are expected of DCSA and, in turn, their suppliers. World-Class skills are therefore expected of the employees from all of the organisations within the cluster. This factor poses a challenge to South African organisations who are subjected to and challenged by the legislation that seeks to address and correct the societal imbalance of the past. The research problem addressed in this study was two-fold. The first objective was to determine whether or not there was a competitive advantage to be gained by being part of an industry cluster. The second objective was to determine how suppliers to DCSA from within the cluster developed world-class skills despite the constraints imposed upon them by South African legislation. To achieve these objectives, a theoretical study was conducted on existing conditions within clusters worldwide, as well as on methods being implemented by global organisations to develop world-class skills. An empirical study, covering the topics of competitive advantage and developing world-class skills, was developed and sent to suppliers of DCSA to test the degree of concurrence between methods implemented in the Border-Kei Motor Industry Cluster and global organisations elsewhere in the world. The results of the empirical study indicated a strong concurrence in many of the factors, and essentially only differed in instances where a cluster was more developed.
- Full Text:
- Date Issued: 2000
An evaluation of a strategy of lean manufacturing as a means for a South African motor vehicle assembler to achieve core competence
- Authors: Maritz, Louis Wiehahn
- Date: 2000
- Subjects: Automobile industry and trade -- Management , Automobile industry and trade -- South Africa , Manufacturing industries -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10834 , http://hdl.handle.net/10948/26 , Automobile industry and trade -- Management , Automobile industry and trade -- South Africa , Manufacturing industries -- Management
- Description: South African businesses are facing unforeseen opportunities and threats following the country’s remarkable political transformation that culminated in its first non-racial, democratic elections in April 1994 (Krüger, 1997: 138). The objective of this paper was to understand what core competences a South African motor vehicle assembler requires to survive this era of declining protectionism and increasing competition. It is argued in this paper that organisations that want to compete with the best in the world market needs to adopt lean manufacturing principles. This paper is concerned with the core competences of an organisation and how an organisation identifies and utilises these in order to become a lean enterprise. The qualitative research method was identified as the most appropriate for the study. Two methods of data collection were used i.e. interviews with senior and middle management and a detailed literary study on the subject. The senior management interviews were aimed at identifying what they perceived to be the core competences a motor vehicle assembler requires in order to be a world-class lean manufacturing enterprise. The literary study was the base for the understanding of core competence and lean manufacturing. Finally, a second round of interviews with middle management was conducted to obtain clarity on the perceived role of middle management in the selected organisation’s quest to be a lean manufacturing concern. This paper concludes that if an organisation wants to survive it needs to identify and assess its core competences. These competences need to be developed or discarded in the organisation’s aims to be a lean manufacturing enterprise by eliminating all forms of non-value added activity. The programmes or projects that the selected organisation embarked on were primarily driven from the top down, placing middle management in the centre with the resistance coming from the lower levels in the organisation. Middle management should be given the necessary tools to overcome the resistance and assist the company to make smooth transitions.
- Full Text:
- Date Issued: 2000
- Authors: Maritz, Louis Wiehahn
- Date: 2000
- Subjects: Automobile industry and trade -- Management , Automobile industry and trade -- South Africa , Manufacturing industries -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10834 , http://hdl.handle.net/10948/26 , Automobile industry and trade -- Management , Automobile industry and trade -- South Africa , Manufacturing industries -- Management
- Description: South African businesses are facing unforeseen opportunities and threats following the country’s remarkable political transformation that culminated in its first non-racial, democratic elections in April 1994 (Krüger, 1997: 138). The objective of this paper was to understand what core competences a South African motor vehicle assembler requires to survive this era of declining protectionism and increasing competition. It is argued in this paper that organisations that want to compete with the best in the world market needs to adopt lean manufacturing principles. This paper is concerned with the core competences of an organisation and how an organisation identifies and utilises these in order to become a lean enterprise. The qualitative research method was identified as the most appropriate for the study. Two methods of data collection were used i.e. interviews with senior and middle management and a detailed literary study on the subject. The senior management interviews were aimed at identifying what they perceived to be the core competences a motor vehicle assembler requires in order to be a world-class lean manufacturing enterprise. The literary study was the base for the understanding of core competence and lean manufacturing. Finally, a second round of interviews with middle management was conducted to obtain clarity on the perceived role of middle management in the selected organisation’s quest to be a lean manufacturing concern. This paper concludes that if an organisation wants to survive it needs to identify and assess its core competences. These competences need to be developed or discarded in the organisation’s aims to be a lean manufacturing enterprise by eliminating all forms of non-value added activity. The programmes or projects that the selected organisation embarked on were primarily driven from the top down, placing middle management in the centre with the resistance coming from the lower levels in the organisation. Middle management should be given the necessary tools to overcome the resistance and assist the company to make smooth transitions.
- Full Text:
- Date Issued: 2000
The nature and control of organic compounds in soda ash evaporate production
- Masemola, Patricia Mmoniemang
- Authors: Masemola, Patricia Mmoniemang
- Date: 2000
- Subjects: Organic compounds , Biotic communities , Sua Pan Soda Ash Project -- Botswana
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3902 , http://hdl.handle.net/10962/d1003961 , Organic compounds , Biotic communities , Sua Pan Soda Ash Project -- Botswana
- Description: Solar evaporite systems are man-managed ecosystems which are highly vulnerable to biological,physical and chemical disturbances. The problems encountered in such systems are in many cases found to be associated with the microbial ecology and the design of the system. This project focussed on investigating the nature of organic compounds contaminating soda ash produced at a solar evaporite production system located at Sua Pan in Botswana. Several years after the plant was commissioned, problems, including accumulation of total organic carbon (TOC) and discolouration of the soda ash product were encountered. The salt produced also retained high moisture content and was coloured pink. These phenomena impacted severely on the economic performance of the enterprise. This study was aimed at determining the origin and fate of these organic compounds within the system in order to elucidate the nature of the problem and also to conceptualise a remediation strategy suitable to reducing its impact. This was achieved by analysis of both dialysed and solvent extracts of the influent brine (well-brine), brine in the ponds (T-brine) and the bicarbonate filter cake. Although complete identification of the organic compounds isolated was not undertaken in this study, spectroscopic analysis of compounds isolated, by UV, IR, NMR and MS, strongly indicated that fulvic acids, a component of the influent well-brine organics, contribute to the organic contamination of the final product. Part of this component, however, is degraded during the ponding process. It was shown that an extracellular polysaccharide (EPS) produced by Dunaliella. spp., which proliferates in the evaporation ponds, contributes in a major way to the accumulation of TOC in the system. This was demonstrated by relating the sugar profile of carbohydrates isolated from the pond brine and final product, being arabinose, xylose, 2-o-methyl hexose, mannose, glucose and galactose. Studies reported show that EPS production was enhanced when algal cultures were exposed to stress conditions of high illumination, increasing salinity and temperature, and nitrogen limitation. Studies undertaken for the development of a remediation process for this system have shown that nutrient stripping and bacterial systems could be applied to deal with the dissolved TOC fraction, whereas adsorption systems could deal with the particulate fractions. Algal systems showed most potential for the removal of nutrients in the influent well-brine compared to chemical processes.Complete removal of ammonium and phosphorus removal efficiencies of pproximately 50% were achieved in an unoptimised pilot-scale Dunaliella-based HRAP. While similar effects were demonstrated for chemical processes, some economic constraints were noted. The potential of halophilic bacterial systems for the degradation of organic compounds in brine was also demonstrated. The limitations on the performance of such systems, associated with the low metabolic diversity, and poor immobilisation of physico-chemical processes were found to have a very low impact on the dissolved TOC fraction of the brine, the removal of the particulate material was found to result in a 35% TOC reduction in the final soda ash product and the production of a white final product.halobacteria, however, were noted. Although physico-chemical processes were found to have a very low impact on the dissolved TOC fraction of the brine, the removal of the particulate material was found to result in a 35% TOC reduction in the final soda ash product and the production of a white final product. Apart from a description of the microbial ecology of the ponds and the identification of major contributions to the TOC of the final product, a number of remediation strategies were evaluated and are described. These include chemical and biological stripping of nutrients sustaining microbial TOC production in the ponds, and also biological and physico-chemical processes for their removal once formed. Future studies to undertake the further development of these proposals has been described
- Full Text:
- Date Issued: 2000
- Authors: Masemola, Patricia Mmoniemang
- Date: 2000
- Subjects: Organic compounds , Biotic communities , Sua Pan Soda Ash Project -- Botswana
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3902 , http://hdl.handle.net/10962/d1003961 , Organic compounds , Biotic communities , Sua Pan Soda Ash Project -- Botswana
- Description: Solar evaporite systems are man-managed ecosystems which are highly vulnerable to biological,physical and chemical disturbances. The problems encountered in such systems are in many cases found to be associated with the microbial ecology and the design of the system. This project focussed on investigating the nature of organic compounds contaminating soda ash produced at a solar evaporite production system located at Sua Pan in Botswana. Several years after the plant was commissioned, problems, including accumulation of total organic carbon (TOC) and discolouration of the soda ash product were encountered. The salt produced also retained high moisture content and was coloured pink. These phenomena impacted severely on the economic performance of the enterprise. This study was aimed at determining the origin and fate of these organic compounds within the system in order to elucidate the nature of the problem and also to conceptualise a remediation strategy suitable to reducing its impact. This was achieved by analysis of both dialysed and solvent extracts of the influent brine (well-brine), brine in the ponds (T-brine) and the bicarbonate filter cake. Although complete identification of the organic compounds isolated was not undertaken in this study, spectroscopic analysis of compounds isolated, by UV, IR, NMR and MS, strongly indicated that fulvic acids, a component of the influent well-brine organics, contribute to the organic contamination of the final product. Part of this component, however, is degraded during the ponding process. It was shown that an extracellular polysaccharide (EPS) produced by Dunaliella. spp., which proliferates in the evaporation ponds, contributes in a major way to the accumulation of TOC in the system. This was demonstrated by relating the sugar profile of carbohydrates isolated from the pond brine and final product, being arabinose, xylose, 2-o-methyl hexose, mannose, glucose and galactose. Studies reported show that EPS production was enhanced when algal cultures were exposed to stress conditions of high illumination, increasing salinity and temperature, and nitrogen limitation. Studies undertaken for the development of a remediation process for this system have shown that nutrient stripping and bacterial systems could be applied to deal with the dissolved TOC fraction, whereas adsorption systems could deal with the particulate fractions. Algal systems showed most potential for the removal of nutrients in the influent well-brine compared to chemical processes.Complete removal of ammonium and phosphorus removal efficiencies of pproximately 50% were achieved in an unoptimised pilot-scale Dunaliella-based HRAP. While similar effects were demonstrated for chemical processes, some economic constraints were noted. The potential of halophilic bacterial systems for the degradation of organic compounds in brine was also demonstrated. The limitations on the performance of such systems, associated with the low metabolic diversity, and poor immobilisation of physico-chemical processes were found to have a very low impact on the dissolved TOC fraction of the brine, the removal of the particulate material was found to result in a 35% TOC reduction in the final soda ash product and the production of a white final product.halobacteria, however, were noted. Although physico-chemical processes were found to have a very low impact on the dissolved TOC fraction of the brine, the removal of the particulate material was found to result in a 35% TOC reduction in the final soda ash product and the production of a white final product. Apart from a description of the microbial ecology of the ponds and the identification of major contributions to the TOC of the final product, a number of remediation strategies were evaluated and are described. These include chemical and biological stripping of nutrients sustaining microbial TOC production in the ponds, and also biological and physico-chemical processes for their removal once formed. Future studies to undertake the further development of these proposals has been described
- Full Text:
- Date Issued: 2000
Observations of selective feeding of the aphid, Sitobion yakini (eastop) on leaf blades of barley (Hordeum vulgare L)
- Authors: Matsiliza, Babalwa
- Date: 2000
- Subjects: Aphids , Phloem , Barley
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4212 , http://hdl.handle.net/10962/d1003781 , Aphids , Phloem , Barley
- Description: Penetration of leaves of barley (Hordeum vulgare L.) plants grown under normal conditions and those exposed to physiological stress, by the aphid, Sitobion yakini was investigated using light and electron microscope techniques. This was carried out to determine if there was evidence of preferential feeding on either thin- or thick-walled sieve tubes in the barley leaf. Under both stress and non-stress conditions, preliminary results of an electron microscope investigation showed that penetration of the epidermis and mesophyll was largely intercellular, becoming partly intercellular and in part intracellular inside the vascular bundle. A total of 317 stylets and stylet tracks were encountered during the examination of 2000 serial sections. In non-stressed plant material, 293 (92%) terminated in thin-walled sieve tubes and only 24 (8%) in thick-walled sieve tubes. Investigation of 1000 serial sections using stressed plant material showed, that 84 of 89 (94%) stylets and stylet tracks encountered terminated in thin-walled sieve tubes. Furthermore, 90 of 94 (96%) stylets and stylet tracks encountered in 1000 serial sections from the second experiment of control non-stressed plant material (control) terminated in thin-walled sieve tubes. The thin-walled sieve tubes were significantly more visited (probed) by the aphid than the thick-walled sieve tubes. Under stress conditions, 50 of 89 (56%) stylets and stylet tracks which terminated in thin-walled sieve tubes were associated with the small longitudinal bundles. Under normal conditions, 65 of 94 (69%) stylets and stylet tracks which terminated in thin-walled sieve tubes were associated with the small longitudinal bundles. There were no significant differences on the number of probes of sieve elements between the two treatments. These data suggest that the aphid S. yakini feeds preferentially on the thin-walled sieve tubes of the small longitudinal vascular bundles in plants grown under normal conditions and those exposed to physiological stress, such as water stress. This further suggests that the thin-walled sieve tubes in barley leaf blades are more attractive to the aphid and are probably most functional in terms of phloem loading and transport.
- Full Text:
- Date Issued: 2000
- Authors: Matsiliza, Babalwa
- Date: 2000
- Subjects: Aphids , Phloem , Barley
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4212 , http://hdl.handle.net/10962/d1003781 , Aphids , Phloem , Barley
- Description: Penetration of leaves of barley (Hordeum vulgare L.) plants grown under normal conditions and those exposed to physiological stress, by the aphid, Sitobion yakini was investigated using light and electron microscope techniques. This was carried out to determine if there was evidence of preferential feeding on either thin- or thick-walled sieve tubes in the barley leaf. Under both stress and non-stress conditions, preliminary results of an electron microscope investigation showed that penetration of the epidermis and mesophyll was largely intercellular, becoming partly intercellular and in part intracellular inside the vascular bundle. A total of 317 stylets and stylet tracks were encountered during the examination of 2000 serial sections. In non-stressed plant material, 293 (92%) terminated in thin-walled sieve tubes and only 24 (8%) in thick-walled sieve tubes. Investigation of 1000 serial sections using stressed plant material showed, that 84 of 89 (94%) stylets and stylet tracks encountered terminated in thin-walled sieve tubes. Furthermore, 90 of 94 (96%) stylets and stylet tracks encountered in 1000 serial sections from the second experiment of control non-stressed plant material (control) terminated in thin-walled sieve tubes. The thin-walled sieve tubes were significantly more visited (probed) by the aphid than the thick-walled sieve tubes. Under stress conditions, 50 of 89 (56%) stylets and stylet tracks which terminated in thin-walled sieve tubes were associated with the small longitudinal bundles. Under normal conditions, 65 of 94 (69%) stylets and stylet tracks which terminated in thin-walled sieve tubes were associated with the small longitudinal bundles. There were no significant differences on the number of probes of sieve elements between the two treatments. These data suggest that the aphid S. yakini feeds preferentially on the thin-walled sieve tubes of the small longitudinal vascular bundles in plants grown under normal conditions and those exposed to physiological stress, such as water stress. This further suggests that the thin-walled sieve tubes in barley leaf blades are more attractive to the aphid and are probably most functional in terms of phloem loading and transport.
- Full Text:
- Date Issued: 2000
Environmental art and its contribution to establishing an awareness of the sacred in nature
- Matthews, Elaine Katherine Simone
- Authors: Matthews, Elaine Katherine Simone
- Date: 2000
- Subjects: Installations (Art) Art, Modern -- 20th century Nature (Aesthetics)
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2413 , http://hdl.handle.net/10962/d1002209
- Description: The introduction establishes the goal of the research, which is to discover that art concerned with re-evaluating the relationship to the environment and spirituality can serve to connect people to one another, and to the environment. The context of the research is the contemporary ecological and spiritual crisis of the postmodern world. The background places the discussion within the contexts of modernism and postmodernism. The historical background focuses on the period from the 1960s to the present day. Land and Environmental artists who work in a manner that is conscious of environmental issues and who suggest a sacred and creative attitude to ecology are discussed. My own creative work which is a response to both ancient and contemporary sites as well as to contemporary theories of art and spirituality is discussed. The four projects, are discussed in chronological order, they are: Quest - A journey into Sacred Space; Gaika's Kop - Sacred Mountain; Labyrinth - Journeys to the Centre; and Transforming the Centre. The conclusion shows that the multi-faceted, intertextual and relativistic philosophy of postmodernism has brought about a significant change in the attitude of humanity towards the environment. Artists who reject the modernist aesthetic and philosophy are making art that emphasises relationship to, rather than separation from the natural world.
- Full Text:
- Date Issued: 2000
- Authors: Matthews, Elaine Katherine Simone
- Date: 2000
- Subjects: Installations (Art) Art, Modern -- 20th century Nature (Aesthetics)
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2413 , http://hdl.handle.net/10962/d1002209
- Description: The introduction establishes the goal of the research, which is to discover that art concerned with re-evaluating the relationship to the environment and spirituality can serve to connect people to one another, and to the environment. The context of the research is the contemporary ecological and spiritual crisis of the postmodern world. The background places the discussion within the contexts of modernism and postmodernism. The historical background focuses on the period from the 1960s to the present day. Land and Environmental artists who work in a manner that is conscious of environmental issues and who suggest a sacred and creative attitude to ecology are discussed. My own creative work which is a response to both ancient and contemporary sites as well as to contemporary theories of art and spirituality is discussed. The four projects, are discussed in chronological order, they are: Quest - A journey into Sacred Space; Gaika's Kop - Sacred Mountain; Labyrinth - Journeys to the Centre; and Transforming the Centre. The conclusion shows that the multi-faceted, intertextual and relativistic philosophy of postmodernism has brought about a significant change in the attitude of humanity towards the environment. Artists who reject the modernist aesthetic and philosophy are making art that emphasises relationship to, rather than separation from the natural world.
- Full Text:
- Date Issued: 2000
The geomorphological impacts of impoundments, with particular reference to tributary bar development on the Keiskamma River, Eastern Cape
- Authors: McGregor, Gillian Kathleen
- Date: 2000
- Subjects: Rivers--South Africa--Regulation , Rivers--South Africa--Regulation--Environmental aspects , Rivers--South Africa--Eastern Cape , Geomorphology--South Africa--Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4835 , http://hdl.handle.net/10962/d1005510 , Rivers--South Africa--Regulation , Rivers--South Africa--Regulation--Environmental aspects , Rivers--South Africa--Eastern Cape , Geomorphology--South Africa--Eastern Cape
- Description: The primary aim of this research was to develop and test a conceptual model of the geomorphological impacts of river regulation, based on a review of relevant international literature. It was motivated by the fact that there is very little local information on the topic, and it was intended that the model might provide a starting point for assessing the impact of impoundments on South African river systems. At present most research in South Africa on the impact of impoundments is undertaken from an ecological perspective. In order to manage our water resources sustainably it is necessary to have a better understanding of our river systems. South Africa is characterised by a variable climatic regime and, in order to supply water to the various user sectors of the nation, dams have to be larger than elsewhere in the world, to trap most of the mean annual runoff and provide a reliable water store (Alexander, 1985). South African dams have been designed to reduce the variability of a naturally variable regime. The impact of flow regulation in dryland rivers has been described as 'ecologically catastrophic at every level.' It is therefore hardly surprising that the impact of these dams on the natural functioning of rivers is substantial. The conceptual model showed that there are many responses to river impoundment, which are varied and complex, both in time and space. Responses or secondary impacts depended on the nature and degree of the primary impact or process alteration, on the sediment and flow regime of the river. High flows were affected in all cases and low flows were affected in most cases. The simplest form of change was Petts' (1979) concept of 'accommodation' of the regulated flow within the existing channel form. More complex responses occUrred where the channel perimeter was unstable, or where tributaries introduced fresh sediment loads. The river could adjust its long profile, cross sectional area and substrate composition by aggradation or degradation. The conceptual model was used in the Building Block Methodology to predict impoundment impacts at Instream Flow Requirement workshops on the Berg, Komati and Bivane rivers. It was also used in assessing the impact of the Sandile Dam on the Keiskamma river. Tributary junctions were identified as likely sites of change, and the morphology of bars at these junctions was investigated. Due to the number of variables affecting the sediment and flow regime in the system, and due to the fact that the primary impacts were not substantial, it was not possible to come to any decisive conclusions. It would seem that the dam is well located in the catchment, and, because the water is not heavily utilised, the secondary impacts are not great. The conceptual model was found to be a useful basic tool which might contribute to a better understanding of our river systems, and ultimately to improved sustainable resource management.
- Full Text:
- Date Issued: 2000
- Authors: McGregor, Gillian Kathleen
- Date: 2000
- Subjects: Rivers--South Africa--Regulation , Rivers--South Africa--Regulation--Environmental aspects , Rivers--South Africa--Eastern Cape , Geomorphology--South Africa--Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4835 , http://hdl.handle.net/10962/d1005510 , Rivers--South Africa--Regulation , Rivers--South Africa--Regulation--Environmental aspects , Rivers--South Africa--Eastern Cape , Geomorphology--South Africa--Eastern Cape
- Description: The primary aim of this research was to develop and test a conceptual model of the geomorphological impacts of river regulation, based on a review of relevant international literature. It was motivated by the fact that there is very little local information on the topic, and it was intended that the model might provide a starting point for assessing the impact of impoundments on South African river systems. At present most research in South Africa on the impact of impoundments is undertaken from an ecological perspective. In order to manage our water resources sustainably it is necessary to have a better understanding of our river systems. South Africa is characterised by a variable climatic regime and, in order to supply water to the various user sectors of the nation, dams have to be larger than elsewhere in the world, to trap most of the mean annual runoff and provide a reliable water store (Alexander, 1985). South African dams have been designed to reduce the variability of a naturally variable regime. The impact of flow regulation in dryland rivers has been described as 'ecologically catastrophic at every level.' It is therefore hardly surprising that the impact of these dams on the natural functioning of rivers is substantial. The conceptual model showed that there are many responses to river impoundment, which are varied and complex, both in time and space. Responses or secondary impacts depended on the nature and degree of the primary impact or process alteration, on the sediment and flow regime of the river. High flows were affected in all cases and low flows were affected in most cases. The simplest form of change was Petts' (1979) concept of 'accommodation' of the regulated flow within the existing channel form. More complex responses occUrred where the channel perimeter was unstable, or where tributaries introduced fresh sediment loads. The river could adjust its long profile, cross sectional area and substrate composition by aggradation or degradation. The conceptual model was used in the Building Block Methodology to predict impoundment impacts at Instream Flow Requirement workshops on the Berg, Komati and Bivane rivers. It was also used in assessing the impact of the Sandile Dam on the Keiskamma river. Tributary junctions were identified as likely sites of change, and the morphology of bars at these junctions was investigated. Due to the number of variables affecting the sediment and flow regime in the system, and due to the fact that the primary impacts were not substantial, it was not possible to come to any decisive conclusions. It would seem that the dam is well located in the catchment, and, because the water is not heavily utilised, the secondary impacts are not great. The conceptual model was found to be a useful basic tool which might contribute to a better understanding of our river systems, and ultimately to improved sustainable resource management.
- Full Text:
- Date Issued: 2000
Road culture : an investigation of the road as a means of mental and physical exploration
- Authors: Meistre, Brent Arthur
- Date: 2000
- Subjects: Roads in art , Travel in art , Travel -- Psychological aspects , Travelers -- Psychology
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2414 , http://hdl.handle.net/10962/d1002210 , Roads in art , Travel in art , Travel -- Psychological aspects , Travelers -- Psychology
- Description: Chapter one considers various manifestations of the concept of ‘journey’ and how they have changed over history. The Odyssean journey that the hero undertakes to reach a point of self-realisation is investigated. This leads to a other discussion of types of journeys such as pilgrimages, as well as ‘wandering’. These are contrasted with the twentieth century perceptions of journey. Questions of travel are then dealt with: how the nature of the traveller's path has changed over the centuries, various points of travel and gender, and how in the last century solitary travel has been transformed into mass tourism. The second chapter deals specifically with the motorcar, the mobility it enables and how it has led to the rise of a roadside culture. Different factors that influenced the rise of the motorcar are looked at. The motorcar as a cell and eroticism and the car are also investigated. The twentieth century city, it's restructuring, as well as the highway systems is discussed. In Chapter Three, the sense of freedom that the motorcar created is considered in particular reference to escape, aimlessness, and road weariness, as well as the landscape as a symbol of freedom. This leads to a discussion on the notion of speed, the sense of power and the romanticisation of death in car crashes. Chapter Four investigates masculinity and the road. The frontier as a place in the psyche of the male is also dealt with. The road as a means of testing and regaining masculinity in the mid-twentieth century is considered. Issues of the male domination of the land and the feminine are discussed, with the chapter ending with a brief examination of the woman as traveller. Lastly the masters’ submission exhibition, entitled RODE is discussed with direct reference to the theories investigated in the previous chapters. Individual works as well as the methodology are looked at closely.
- Full Text:
- Date Issued: 2000
- Authors: Meistre, Brent Arthur
- Date: 2000
- Subjects: Roads in art , Travel in art , Travel -- Psychological aspects , Travelers -- Psychology
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2414 , http://hdl.handle.net/10962/d1002210 , Roads in art , Travel in art , Travel -- Psychological aspects , Travelers -- Psychology
- Description: Chapter one considers various manifestations of the concept of ‘journey’ and how they have changed over history. The Odyssean journey that the hero undertakes to reach a point of self-realisation is investigated. This leads to a other discussion of types of journeys such as pilgrimages, as well as ‘wandering’. These are contrasted with the twentieth century perceptions of journey. Questions of travel are then dealt with: how the nature of the traveller's path has changed over the centuries, various points of travel and gender, and how in the last century solitary travel has been transformed into mass tourism. The second chapter deals specifically with the motorcar, the mobility it enables and how it has led to the rise of a roadside culture. Different factors that influenced the rise of the motorcar are looked at. The motorcar as a cell and eroticism and the car are also investigated. The twentieth century city, it's restructuring, as well as the highway systems is discussed. In Chapter Three, the sense of freedom that the motorcar created is considered in particular reference to escape, aimlessness, and road weariness, as well as the landscape as a symbol of freedom. This leads to a discussion on the notion of speed, the sense of power and the romanticisation of death in car crashes. Chapter Four investigates masculinity and the road. The frontier as a place in the psyche of the male is also dealt with. The road as a means of testing and regaining masculinity in the mid-twentieth century is considered. Issues of the male domination of the land and the feminine are discussed, with the chapter ending with a brief examination of the woman as traveller. Lastly the masters’ submission exhibition, entitled RODE is discussed with direct reference to the theories investigated in the previous chapters. Individual works as well as the methodology are looked at closely.
- Full Text:
- Date Issued: 2000
Determining the essential traits for successful retail pharmacists in the Port Elizabeth-Uitenhage metropole
- Authors: Melamed, Graham Morrison
- Date: 2000
- Subjects: Retail trade -- Port Elizabeth -- South Africa , Pharmacists -- South Africa , Pharmacy management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10831 , http://hdl.handle.net/10948/22 , Retail trade -- Port Elizabeth -- South Africa , Pharmacists -- South Africa , Pharmacy management
- Description: The research problem addressed in this study was to determine whether successful retail pharmacists exhibited specific traits. To achieve this objective a theoretical schedule of traits was developed, using relevant literature in which traits of entrepreneurs are described. The theoretical list consisted of the possession of the following traits: The need to achieve; Confidence in their abilities; The successful management of risk; Creativity and the possession of vision; The tendency/ability to view changes as opportunities; Internal locus of control; Leadership; High level of motivation; Tenacity; Communication skills. Each trait of the schedule was analysed using the literature identified during the literature study. The theoretical list was then used to develop a questionnaire to test the degree to which retail pharmacists in the Greater Port Elizabeth/Uitenhage Metropole concur. The empirical results obtained indicate a strong concurrence with the theoretical list of traits of successful retail pharmacists that was developed in the study. This resulted in the theoretical schedule being confirmed and accepted as a list of traits possessed by successful retail pharmacists.
- Full Text:
- Date Issued: 2000
- Authors: Melamed, Graham Morrison
- Date: 2000
- Subjects: Retail trade -- Port Elizabeth -- South Africa , Pharmacists -- South Africa , Pharmacy management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10831 , http://hdl.handle.net/10948/22 , Retail trade -- Port Elizabeth -- South Africa , Pharmacists -- South Africa , Pharmacy management
- Description: The research problem addressed in this study was to determine whether successful retail pharmacists exhibited specific traits. To achieve this objective a theoretical schedule of traits was developed, using relevant literature in which traits of entrepreneurs are described. The theoretical list consisted of the possession of the following traits: The need to achieve; Confidence in their abilities; The successful management of risk; Creativity and the possession of vision; The tendency/ability to view changes as opportunities; Internal locus of control; Leadership; High level of motivation; Tenacity; Communication skills. Each trait of the schedule was analysed using the literature identified during the literature study. The theoretical list was then used to develop a questionnaire to test the degree to which retail pharmacists in the Greater Port Elizabeth/Uitenhage Metropole concur. The empirical results obtained indicate a strong concurrence with the theoretical list of traits of successful retail pharmacists that was developed in the study. This resulted in the theoretical schedule being confirmed and accepted as a list of traits possessed by successful retail pharmacists.
- Full Text:
- Date Issued: 2000