The women's health initiative study: impact on the prescribing of hormone replacement therapy in a defined South African population
- Authors: Hanly, Teia
- Date: 2006
- Subjects: Women -- Health and hygiene -- South Africa , Women's health services -- South Africa , Menopause -- Hormone therapy -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10156 , http://hdl.handle.net/10948/519 , http://hdl.handle.net/10948/d1011713 , Women -- Health and hygiene -- South Africa , Women's health services -- South Africa , Menopause -- Hormone therapy -- South Africa
- Description: Context: The Women’s Health Initiative (WHI) study, published in July 2002, had a significant impact on the prescribing of hormone replacement therapy (HRT). The controversy surrounding the findings, however, has led to much uncertainty regarding the prescription of HRT. Aims and Objectives: The aim of this study is to determine both the initial and the continued impact of the WHI study on the prescribing of HRT in a defined South African population and to determine whether HRT was appropriately individualised based on recommendations published subsequent to the WHI study. Setting: Claims data from a Managed Healthcare Organisation (MHO) that administers for a number of medical aid schemes in South Africa. Method: A retrospective drug utilisation review (DUR) was conducted to identify HRT-related prescribing patterns in the defined populations. The time-frame of the dataset included January 2002, to assess prescribing patterns prior to the publication of the WHI study, January 2003 to determine the initial impact of the WHI study, and January 2005 to assess the continued impact. An extensive, additional dataset of all the HRT users in the defined populations was utilised to conduct a sub-group analysis and determine whether HRT had been appropriately individualised. Key Findings: The percentage of patients in the dataset using HRT decreased from 30.05 percent in January 2002 to 28.30 percent in January 2003 and to 23.24 percent in January 2005, with the latter decrease reaching statistical significance. Although sex hormones and modulators (G03) of the genital system were the most frequently prescribed drug class in all three years of the study period, the prescribing frequency decreased significantly from 10.40 percent in January 2002 to 9.32 percent in January 2003 and 7.44 percent in January 2005. The most noteworthy change in the prescribing of HRT was a 3.95 percent decrease in the prescribing of conjugated equine estrogen (CEE), with a corresponding 2.53 percent increase in the prescribing of estradiol between January 2002 and January 2003. However, less pronounced changes were observed in the prescribing frequencies of other types of HRT, including medroxyprogesterone and estrogen (the HRT type investigated in the estrogen plus progestin phase of the WHI study). Patients initiating HRT post-WHI publication were generally found to be in the younger menopausal age categories (40 to 49 years). These patients were more likely to have been initiated on HRT types other than those investigated in the WHI study and were at a higher risk for disease states for which HRT use is beneficial, such as osteoporosis. Patients discontinuing HRT post-WHI publication were generally found to be in the older menopausal age categories (60 to 69 years), were more likely to have been combined HRT users (although not necessarily the type investigated in the WHI study) and were at a higher risk for disease states for which HRT use is considered harmful or has an uncertain effect, such as diseases affecting the cardiovascular system. Conclusion: It can be concluded that the WHI study did have an impact on the prescribing of HRT in the defined South African population of this study, but that the impact was considerably less than the impact reported in global studies. It was also determined that HRT was appropriately individualised according to recommendations made subsequent to publication of the WHI study.
- Full Text:
- Date Issued: 2006
- Authors: Hanly, Teia
- Date: 2006
- Subjects: Women -- Health and hygiene -- South Africa , Women's health services -- South Africa , Menopause -- Hormone therapy -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10156 , http://hdl.handle.net/10948/519 , http://hdl.handle.net/10948/d1011713 , Women -- Health and hygiene -- South Africa , Women's health services -- South Africa , Menopause -- Hormone therapy -- South Africa
- Description: Context: The Women’s Health Initiative (WHI) study, published in July 2002, had a significant impact on the prescribing of hormone replacement therapy (HRT). The controversy surrounding the findings, however, has led to much uncertainty regarding the prescription of HRT. Aims and Objectives: The aim of this study is to determine both the initial and the continued impact of the WHI study on the prescribing of HRT in a defined South African population and to determine whether HRT was appropriately individualised based on recommendations published subsequent to the WHI study. Setting: Claims data from a Managed Healthcare Organisation (MHO) that administers for a number of medical aid schemes in South Africa. Method: A retrospective drug utilisation review (DUR) was conducted to identify HRT-related prescribing patterns in the defined populations. The time-frame of the dataset included January 2002, to assess prescribing patterns prior to the publication of the WHI study, January 2003 to determine the initial impact of the WHI study, and January 2005 to assess the continued impact. An extensive, additional dataset of all the HRT users in the defined populations was utilised to conduct a sub-group analysis and determine whether HRT had been appropriately individualised. Key Findings: The percentage of patients in the dataset using HRT decreased from 30.05 percent in January 2002 to 28.30 percent in January 2003 and to 23.24 percent in January 2005, with the latter decrease reaching statistical significance. Although sex hormones and modulators (G03) of the genital system were the most frequently prescribed drug class in all three years of the study period, the prescribing frequency decreased significantly from 10.40 percent in January 2002 to 9.32 percent in January 2003 and 7.44 percent in January 2005. The most noteworthy change in the prescribing of HRT was a 3.95 percent decrease in the prescribing of conjugated equine estrogen (CEE), with a corresponding 2.53 percent increase in the prescribing of estradiol between January 2002 and January 2003. However, less pronounced changes were observed in the prescribing frequencies of other types of HRT, including medroxyprogesterone and estrogen (the HRT type investigated in the estrogen plus progestin phase of the WHI study). Patients initiating HRT post-WHI publication were generally found to be in the younger menopausal age categories (40 to 49 years). These patients were more likely to have been initiated on HRT types other than those investigated in the WHI study and were at a higher risk for disease states for which HRT use is beneficial, such as osteoporosis. Patients discontinuing HRT post-WHI publication were generally found to be in the older menopausal age categories (60 to 69 years), were more likely to have been combined HRT users (although not necessarily the type investigated in the WHI study) and were at a higher risk for disease states for which HRT use is considered harmful or has an uncertain effect, such as diseases affecting the cardiovascular system. Conclusion: It can be concluded that the WHI study did have an impact on the prescribing of HRT in the defined South African population of this study, but that the impact was considerably less than the impact reported in global studies. It was also determined that HRT was appropriately individualised according to recommendations made subsequent to publication of the WHI study.
- Full Text:
- Date Issued: 2006
The utility of Weingarten's witness positions in the understanding of compassion fatigue in people who care for their own family members with AIDS
- Authors: Bambani, Nomfezeko
- Date: 2006
- Subjects: AIDS (Disease) -- Patients AIDS (Disease) -- Social aspects Home-based family services Community health services HIV-positive persons -- Social aspects Caregivers -- Attitudes Burn out (Psychology) Weingarten, Kathy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3103 , http://hdl.handle.net/10962/d1004465
- Description: This paper explores the utility of Weingarten's (2003) witness positions in the understanding of compassion fatigue in people who care for their own family members with AIDS. The research is embedded in Weingarten's theory of witnessing and narrative theory and practice. The literature review explores the shift from hospital-based care to community/home-based care which has led to family members assuming the role of caring for their family members with AIDS, an overview of the effects of caring for AIDS patients on caregivers and an overview of Weingarten's (2003) theory of witnessing with special emphasis on the witnessing positions and their consequences. Interviews, based on narrative theory and practice in which Weingarten's theory is rooted, gave access to the participants' experiences, which were then analysed and interpreted through a framework developed from the witnessing theory. This article demonstrates the utility of Weingarten's (2003) theory of witnessing to people who are caregivers to their own family members with AIDS. I argue that witness positions occupied by caregivers during witnessing determine whether the caregivers will experience compassion fatigue. The negative consequences related to compassion fatigue that will be reviewed could probably be prevented through active, intentional, compassionate witnessing.
- Full Text:
- Date Issued: 2006
- Authors: Bambani, Nomfezeko
- Date: 2006
- Subjects: AIDS (Disease) -- Patients AIDS (Disease) -- Social aspects Home-based family services Community health services HIV-positive persons -- Social aspects Caregivers -- Attitudes Burn out (Psychology) Weingarten, Kathy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3103 , http://hdl.handle.net/10962/d1004465
- Description: This paper explores the utility of Weingarten's (2003) witness positions in the understanding of compassion fatigue in people who care for their own family members with AIDS. The research is embedded in Weingarten's theory of witnessing and narrative theory and practice. The literature review explores the shift from hospital-based care to community/home-based care which has led to family members assuming the role of caring for their family members with AIDS, an overview of the effects of caring for AIDS patients on caregivers and an overview of Weingarten's (2003) theory of witnessing with special emphasis on the witnessing positions and their consequences. Interviews, based on narrative theory and practice in which Weingarten's theory is rooted, gave access to the participants' experiences, which were then analysed and interpreted through a framework developed from the witnessing theory. This article demonstrates the utility of Weingarten's (2003) theory of witnessing to people who are caregivers to their own family members with AIDS. I argue that witness positions occupied by caregivers during witnessing determine whether the caregivers will experience compassion fatigue. The negative consequences related to compassion fatigue that will be reviewed could probably be prevented through active, intentional, compassionate witnessing.
- Full Text:
- Date Issued: 2006
The use of archaeological and ethnographical information to supplement the historical record of the distribution of large mammalian herbivores in South Africa
- Bernard, Ric T F, Parker, Daniel M
- Authors: Bernard, Ric T F , Parker, Daniel M
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6914 , http://hdl.handle.net/10962/d1011877
- Description: Introduction: The introduction of animal taxa to areas where they do not naturally occur has the potential to damage severely the native fauna and flora. Introductions, both accidental and intentional, to Australia, New Zealand, Marion Island and other oceanic islands provide spectacular examples of this.1,2 Non-native mammalian herbivores often become invasive in the absence of their natural predators2 and their impact on vegetation, which may include alterations to plant species composition, structure and diversity, is exaggerated, especially if the vegetation has evolved in the absence of similar herbivores.3,4 This influence is not limited to the direct consequence for the vegetation and there may be a cascade effect on ecosystem functioning through, for example, a decline in the amount of available forage for indigenous herbivores,3 a reduction in the breeding efficiency of birds that rely on the vegetation,5,6 and a negative effect on carbon storage by transforming stands of dense vegetative cover to open savannah like systems.7 Nor are these outcomes restricted to non-native herbivores; the re-introduction of a species, such as the elephant (Loxodonta africana), to areas from which it has been absent for many years may have similar consequences.8–11 Additional problems associated with the uncontrolled movement of large mammals include the transmission of disease, such as brucellosis in the United States,3 and a threat to the genetic integrity of a species through hybridization.12 It is thus clear that deliberate introductions of herbivores to areas where they do not naturally occur may not be sound conservation practice.
- Full Text:
- Date Issued: 2006
- Authors: Bernard, Ric T F , Parker, Daniel M
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6914 , http://hdl.handle.net/10962/d1011877
- Description: Introduction: The introduction of animal taxa to areas where they do not naturally occur has the potential to damage severely the native fauna and flora. Introductions, both accidental and intentional, to Australia, New Zealand, Marion Island and other oceanic islands provide spectacular examples of this.1,2 Non-native mammalian herbivores often become invasive in the absence of their natural predators2 and their impact on vegetation, which may include alterations to plant species composition, structure and diversity, is exaggerated, especially if the vegetation has evolved in the absence of similar herbivores.3,4 This influence is not limited to the direct consequence for the vegetation and there may be a cascade effect on ecosystem functioning through, for example, a decline in the amount of available forage for indigenous herbivores,3 a reduction in the breeding efficiency of birds that rely on the vegetation,5,6 and a negative effect on carbon storage by transforming stands of dense vegetative cover to open savannah like systems.7 Nor are these outcomes restricted to non-native herbivores; the re-introduction of a species, such as the elephant (Loxodonta africana), to areas from which it has been absent for many years may have similar consequences.8–11 Additional problems associated with the uncontrolled movement of large mammals include the transmission of disease, such as brucellosis in the United States,3 and a threat to the genetic integrity of a species through hybridization.12 It is thus clear that deliberate introductions of herbivores to areas where they do not naturally occur may not be sound conservation practice.
- Full Text:
- Date Issued: 2006
The thermal decomposition of copper (II) oxalate revisited
- Lamprecht, Emmanuel, Watkins, Gareth M, Brown, Michael E
- Authors: Lamprecht, Emmanuel , Watkins, Gareth M , Brown, Michael E
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6577 , http://hdl.handle.net/10962/d1004140
- Description: DSC, TG and TG-FT-IR, and XRPD have been used to examine the effects of supposedly inert atmospheres of argon and nitrogen on the mechanism of the thermal decomposition of copper(II) oxalate. The DSC curves in pure argon at 10 °C min[superscript −1] show a broad endotherm with onset at about 280 °C and maximum at about 295 °C. In mixtures of argon and nitrogen, as the proportion of argon gas is decreased, the endothermic character of the decomposition decreases until, when nitrogen is the main component, the decomposition exhibits a complex broad exothermic character. XRPD studies showed that, regardless of the proportions of nitrogen and argon, the DSC residues consisted of mainly copper metal with small amounts of copper(I) oxide (cuprite) and, under some conditions, traces of copper(II) oxide (tenorite). Various explanations for this behaviour are discussed and a possible answer lies in the disproportionation of CO[subscript 2](g) to form small quantities of O[subscript 2](g) or monatomic oxygen. The possibility exists that the exothermicity in nitrogen could be explained by reaction of the nitrogen with atomic oxygen to form N[subscript 2]O(g), but this product could not be detected using TG-FT-IR.
- Full Text:
- Date Issued: 2006
- Authors: Lamprecht, Emmanuel , Watkins, Gareth M , Brown, Michael E
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6577 , http://hdl.handle.net/10962/d1004140
- Description: DSC, TG and TG-FT-IR, and XRPD have been used to examine the effects of supposedly inert atmospheres of argon and nitrogen on the mechanism of the thermal decomposition of copper(II) oxalate. The DSC curves in pure argon at 10 °C min[superscript −1] show a broad endotherm with onset at about 280 °C and maximum at about 295 °C. In mixtures of argon and nitrogen, as the proportion of argon gas is decreased, the endothermic character of the decomposition decreases until, when nitrogen is the main component, the decomposition exhibits a complex broad exothermic character. XRPD studies showed that, regardless of the proportions of nitrogen and argon, the DSC residues consisted of mainly copper metal with small amounts of copper(I) oxide (cuprite) and, under some conditions, traces of copper(II) oxide (tenorite). Various explanations for this behaviour are discussed and a possible answer lies in the disproportionation of CO[subscript 2](g) to form small quantities of O[subscript 2](g) or monatomic oxygen. The possibility exists that the exothermicity in nitrogen could be explained by reaction of the nitrogen with atomic oxygen to form N[subscript 2]O(g), but this product could not be detected using TG-FT-IR.
- Full Text:
- Date Issued: 2006
The test for duress in the South African law of contract
- Authors: Glover, Graham B
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/70756 , vital:29726 , https://hdl.handle.net/10520/EJC53682
- Description: Although it is well-known that a contract induced by duress is voidable at the instance of an aggrieved party, little analysis of this cause of action has been undertaken in South Africa. The test for duress developed by Wessels, and adopted by the courts in Broodryk v Smuts NO 1942 TPD 47, has exercised a vice-grip over this area of contract law. In this article, all five elements of the traditional South African test are subjected to critical examination, and their deficiencies are exposed and discussed. It is argued that the test is neither logically nor conceptually satisfactory, and has hampered development of this area of law. Trends in other jurisdictions, belonging to both the civil-law and the common-law families, are analysed and compared to South African law. On this basis a more modern and coherent test is proposed. This test would be two-pronged, and involve an assessment, in turn, of the lawfulness of the threat made and of whether the party who in fact succumbed to an unlawful threat and entered into the contract was legally justified in doing so.
- Full Text:
- Date Issued: 2006
- Authors: Glover, Graham B
- Date: 2006
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/70756 , vital:29726 , https://hdl.handle.net/10520/EJC53682
- Description: Although it is well-known that a contract induced by duress is voidable at the instance of an aggrieved party, little analysis of this cause of action has been undertaken in South Africa. The test for duress developed by Wessels, and adopted by the courts in Broodryk v Smuts NO 1942 TPD 47, has exercised a vice-grip over this area of contract law. In this article, all five elements of the traditional South African test are subjected to critical examination, and their deficiencies are exposed and discussed. It is argued that the test is neither logically nor conceptually satisfactory, and has hampered development of this area of law. Trends in other jurisdictions, belonging to both the civil-law and the common-law families, are analysed and compared to South African law. On this basis a more modern and coherent test is proposed. This test would be two-pronged, and involve an assessment, in turn, of the lawfulness of the threat made and of whether the party who in fact succumbed to an unlawful threat and entered into the contract was legally justified in doing so.
- Full Text:
- Date Issued: 2006
The tension between market and community the Eastern Cape as a case study of community newspapers
- Authors: Katz, David Anthony
- Date: 2006
- Subjects: Community newspapers -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8380 , http://hdl.handle.net/10948/402 , Community newspapers -- South Africa -- Eastern Cape
- Description: The following study takes a look at the tension between market and community, and investigates the Eastern Cape as a case study. The main objective of the study was to determine what phenomenon is causing the rapid expansion of the community newspaper market. After a brief introduction the first section of chapter one goes about explaining South African newspapers. This was an important process because it helps the reader to understand the South African market. This market had a unique development, the study examines this, and goes on to show the three different spheres of the South African press and takes a look at the major publishers. Section two places the South African media market in context by looking at where newspapers fit into capitalist free market society. This section first develops the notion of democracy and its close relationship to capitalism. This is followed by a look at newspapers as commercial products, and also takes a look at a section of the South African population that is relatively easy for advertisers and marketers to target. This section finally offers a solution to combat the above inadequacies in society. Section three looks at the all important rise of more recent forms of media and the effects they have had on the press. This section first looks at how newspapers have been able to adapt and survive and secondly looks to their future survival in what is becoming a digital age. Chapter two begins by developing the notion of community. It establishes that while the world was heading in the direction of a global community, there has now been a recent trend for people to revert back to local community life in order to combat the inequalities of the global community. The second section of chapter two goes on to give an in-depth description of what community newspapers entail. Chapter three forms the first section of the second half of the study. It deals with Johnnic Communications (Johncom) and takes a look at the company by looking at their history and structures as well as results. It goes on to determine Johncom’s role in the South African media market, which includes publishing interests, BEE credentials, strategic positioning and the establishing of Johncom Community Newspapers (JCN). The final chapter looks at JCN and community newspapers in the Eastern Cape. The first section of this chapter looks at how JCN developed their titles as well as the success these titles have brought. The second section takes an overview look at all the titles in an attempt to find a common denominator that can be attributed to their success. This common denominator is determined to be disposable income. The third section looks at what makes disposable income one of the key factors in the success of community newspapers and uses the appendix interview to support its findings. The final section of this chapter and the entire study looks towards the future. It is a speculation into the future of both community newspapers and Johncom’s projected community newspaper expansion. It looks at other markets in South Africa, but once these become saturated it is expected that a massive African expansion will follow.
- Full Text:
- Date Issued: 2006
- Authors: Katz, David Anthony
- Date: 2006
- Subjects: Community newspapers -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8380 , http://hdl.handle.net/10948/402 , Community newspapers -- South Africa -- Eastern Cape
- Description: The following study takes a look at the tension between market and community, and investigates the Eastern Cape as a case study. The main objective of the study was to determine what phenomenon is causing the rapid expansion of the community newspaper market. After a brief introduction the first section of chapter one goes about explaining South African newspapers. This was an important process because it helps the reader to understand the South African market. This market had a unique development, the study examines this, and goes on to show the three different spheres of the South African press and takes a look at the major publishers. Section two places the South African media market in context by looking at where newspapers fit into capitalist free market society. This section first develops the notion of democracy and its close relationship to capitalism. This is followed by a look at newspapers as commercial products, and also takes a look at a section of the South African population that is relatively easy for advertisers and marketers to target. This section finally offers a solution to combat the above inadequacies in society. Section three looks at the all important rise of more recent forms of media and the effects they have had on the press. This section first looks at how newspapers have been able to adapt and survive and secondly looks to their future survival in what is becoming a digital age. Chapter two begins by developing the notion of community. It establishes that while the world was heading in the direction of a global community, there has now been a recent trend for people to revert back to local community life in order to combat the inequalities of the global community. The second section of chapter two goes on to give an in-depth description of what community newspapers entail. Chapter three forms the first section of the second half of the study. It deals with Johnnic Communications (Johncom) and takes a look at the company by looking at their history and structures as well as results. It goes on to determine Johncom’s role in the South African media market, which includes publishing interests, BEE credentials, strategic positioning and the establishing of Johncom Community Newspapers (JCN). The final chapter looks at JCN and community newspapers in the Eastern Cape. The first section of this chapter looks at how JCN developed their titles as well as the success these titles have brought. The second section takes an overview look at all the titles in an attempt to find a common denominator that can be attributed to their success. This common denominator is determined to be disposable income. The third section looks at what makes disposable income one of the key factors in the success of community newspapers and uses the appendix interview to support its findings. The final section of this chapter and the entire study looks towards the future. It is a speculation into the future of both community newspapers and Johncom’s projected community newspaper expansion. It looks at other markets in South Africa, but once these become saturated it is expected that a massive African expansion will follow.
- Full Text:
- Date Issued: 2006
The taxation of black economic empowerment transactions, with specific reference to the financial sector
- Authors: Kamlana, Unathi
- Date: 2006
- Subjects: Black people -- South Africa -- Economic conditions , Business enterprises, Black -- Taxation -- South Africa , Employee empowerment -- South Africa , Income tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:896 , http://hdl.handle.net/10962/d1004544 , Black people -- South Africa -- Economic conditions , Business enterprises, Black -- Taxation -- South Africa , Employee empowerment -- South Africa , Income tax -- Law and legislation -- South Africa
- Description: There has been some concern that the pace of expectations being built up regarding the transfer of ownership of the economy into the hands of the previously disadvantaged was not allowing for the due diligence and analysis of the implications of such transactions. Tax legislation relating to the transfer of assets is also not seen to be consistently conducive to this process. The focus of this thesis is taxation and a critical analysis of how the current tax legislation affects most of the transactions which usually form the basis of black economic empowerment. It is argued that tax policy is one of the fundamental instruments available to government to encourage the process of black economic empowerment. It is therefore important to assess whether or not current tax legislation is supportive of the process of black economic empowerment and to suggest ways in which it can be amended to serve this purpose. By means of a literature review and a case study of a Black Economic Empowerment deal in the financial sector, the thesis examines various sections of the Income Tax Act, 58 of 1962, which may have a bearing on black economic empowerment transactions and structures, including corporate restructuring rules, the taxation of trusts, inter-company loans, the use of hybrid financial instruments, the taxation of small business corporations, employee share incentive schemes, connected persons rules and value-shifting arrangements, the general deduction formula and the deductibility of interest incurred on amounts raised to acquire shares. It appears that although some aspects of the current tax legislation lend themselves to assisting black economic empowerment transactions, there are still areas where much improvement is required. , KMBT_363
- Full Text:
- Date Issued: 2006
- Authors: Kamlana, Unathi
- Date: 2006
- Subjects: Black people -- South Africa -- Economic conditions , Business enterprises, Black -- Taxation -- South Africa , Employee empowerment -- South Africa , Income tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:896 , http://hdl.handle.net/10962/d1004544 , Black people -- South Africa -- Economic conditions , Business enterprises, Black -- Taxation -- South Africa , Employee empowerment -- South Africa , Income tax -- Law and legislation -- South Africa
- Description: There has been some concern that the pace of expectations being built up regarding the transfer of ownership of the economy into the hands of the previously disadvantaged was not allowing for the due diligence and analysis of the implications of such transactions. Tax legislation relating to the transfer of assets is also not seen to be consistently conducive to this process. The focus of this thesis is taxation and a critical analysis of how the current tax legislation affects most of the transactions which usually form the basis of black economic empowerment. It is argued that tax policy is one of the fundamental instruments available to government to encourage the process of black economic empowerment. It is therefore important to assess whether or not current tax legislation is supportive of the process of black economic empowerment and to suggest ways in which it can be amended to serve this purpose. By means of a literature review and a case study of a Black Economic Empowerment deal in the financial sector, the thesis examines various sections of the Income Tax Act, 58 of 1962, which may have a bearing on black economic empowerment transactions and structures, including corporate restructuring rules, the taxation of trusts, inter-company loans, the use of hybrid financial instruments, the taxation of small business corporations, employee share incentive schemes, connected persons rules and value-shifting arrangements, the general deduction formula and the deductibility of interest incurred on amounts raised to acquire shares. It appears that although some aspects of the current tax legislation lend themselves to assisting black economic empowerment transactions, there are still areas where much improvement is required. , KMBT_363
- Full Text:
- Date Issued: 2006
The strategic implementation of continuous improvement tools within manufacturing plants of the Eastern Cape
- Authors: Spence, Mark George
- Date: 2006
- Subjects: Automobile supplies industry -- South Africa -- Eastern Cape , Production management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8752 , http://hdl.handle.net/10948/611 , Automobile supplies industry -- South Africa -- Eastern Cape , Production management
- Description: Continuous improvement has long been considered a key business strategy to the success of any business that needs to be competitive and survive in a world that is continually evolving, particularly with the increased focus on meeting cost and quality targets that are set by a far more knowledgeable customer. Unfortunately, many organisations invest countless hours of their key personnel's time on training without creating a clear vision and consolidated strategic plan as to how continuous improvement will be driven in the business. Marginal elements of success are obtained, but the harnessing of these skills, as well as the true synergy that could be realized, are watered down due to the silos in which many of the activities are performed. Within the context of this dissertation, a conceptual approach to the strategic implementation of continuous improvement tools within the organization will be sought in order to enhance all facets of the business and not only the traditional arenas of the manufacturing disciplines. Murray and Roberts Foundries Group is embarking on the integration of current and new continuous improvement tools that form part of its continued improvement drive. This research was conducted with other organisations and will help shed light on Murray and Roberts Foundries Group’s way forward in the implementation of these tools to ensure long-term sustainable success. The intent of this dissertation is therefore to offer a comprehensive set of recommendations for Murray and Roberts Foundries Group’s top management in terms of its strategic implementation and the successful application of Lean manufacturing tools and techniques. In addition, areas and directions for further research are identified.
- Full Text:
- Date Issued: 2006
- Authors: Spence, Mark George
- Date: 2006
- Subjects: Automobile supplies industry -- South Africa -- Eastern Cape , Production management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8752 , http://hdl.handle.net/10948/611 , Automobile supplies industry -- South Africa -- Eastern Cape , Production management
- Description: Continuous improvement has long been considered a key business strategy to the success of any business that needs to be competitive and survive in a world that is continually evolving, particularly with the increased focus on meeting cost and quality targets that are set by a far more knowledgeable customer. Unfortunately, many organisations invest countless hours of their key personnel's time on training without creating a clear vision and consolidated strategic plan as to how continuous improvement will be driven in the business. Marginal elements of success are obtained, but the harnessing of these skills, as well as the true synergy that could be realized, are watered down due to the silos in which many of the activities are performed. Within the context of this dissertation, a conceptual approach to the strategic implementation of continuous improvement tools within the organization will be sought in order to enhance all facets of the business and not only the traditional arenas of the manufacturing disciplines. Murray and Roberts Foundries Group is embarking on the integration of current and new continuous improvement tools that form part of its continued improvement drive. This research was conducted with other organisations and will help shed light on Murray and Roberts Foundries Group’s way forward in the implementation of these tools to ensure long-term sustainable success. The intent of this dissertation is therefore to offer a comprehensive set of recommendations for Murray and Roberts Foundries Group’s top management in terms of its strategic implementation and the successful application of Lean manufacturing tools and techniques. In addition, areas and directions for further research are identified.
- Full Text:
- Date Issued: 2006
The stimulation of innovation advantage through autonomous intrapreneurship at Federal Mogul Sealing Systems South Africa
- Authors: Morgan, Beverley Ann
- Date: 2006
- Subjects: Entrepreneurship , Sealing (Technology)
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8552 , http://hdl.handle.net/10948/573 , Entrepreneurship , Sealing (Technology)
- Description: In the rapidly evolving organisational landscapes of today, the quest to grow or sustain competitive advantage demands that organisational practices become more innovative, hence innovative advantage. Globalisation and technological advances drive the necessity for innovation within organisational contexts and the resultant rapid pace of change demands that organisations adopt an intrapreneurial orientation to accommodate this need for innovation. South African organisations, in particular those within the automotive sector, are faced with both unique opportunities and threats as a result of the increased impact of globalisation and the resultant open markets in the post-apartheid era. Programs offered by governmental institutions for this industry sector, such as the Motor Industry Development Programme (MIDP), as well as widely promoted systems such as those engendered by continuous improvement and benchmarking to achieve excellence, are successful only in attaining uniformity and incremental improvements and one-dimensional thinking methodologies. The quest for innovation advantage requires increased creative activity to assist individuals within these organisations in adopting an intrapreneurial outlook to provide proactive solutions. The literature survey has revealed that top-down controls and centralised decision-making as provided by corporate entrepreneurship, is the antithesis of intrapreneurship. Intrapreneurship is thus an autonomous process. Federal Mogul Sealing Systems (FMSS), an automotive component manufacturer within the Eastern Cape served as the basis for this study. A detailed literature review was conducted and a questionnaire was drawn up and distributed in an attempt to assess the three prevalent elements for the creation of innovation advantage through intrapreneurship as reviewed in the literature survey. The three elements were: individual intrapreneurial traits, organisational barriers and enablers of intrapreneurship and the influence of precipitating events on intrapreneurship. The research was conducted and recommendations were made based on the objectives of this study in relation to the organisation under study, FMSS.
- Full Text:
- Date Issued: 2006
- Authors: Morgan, Beverley Ann
- Date: 2006
- Subjects: Entrepreneurship , Sealing (Technology)
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8552 , http://hdl.handle.net/10948/573 , Entrepreneurship , Sealing (Technology)
- Description: In the rapidly evolving organisational landscapes of today, the quest to grow or sustain competitive advantage demands that organisational practices become more innovative, hence innovative advantage. Globalisation and technological advances drive the necessity for innovation within organisational contexts and the resultant rapid pace of change demands that organisations adopt an intrapreneurial orientation to accommodate this need for innovation. South African organisations, in particular those within the automotive sector, are faced with both unique opportunities and threats as a result of the increased impact of globalisation and the resultant open markets in the post-apartheid era. Programs offered by governmental institutions for this industry sector, such as the Motor Industry Development Programme (MIDP), as well as widely promoted systems such as those engendered by continuous improvement and benchmarking to achieve excellence, are successful only in attaining uniformity and incremental improvements and one-dimensional thinking methodologies. The quest for innovation advantage requires increased creative activity to assist individuals within these organisations in adopting an intrapreneurial outlook to provide proactive solutions. The literature survey has revealed that top-down controls and centralised decision-making as provided by corporate entrepreneurship, is the antithesis of intrapreneurship. Intrapreneurship is thus an autonomous process. Federal Mogul Sealing Systems (FMSS), an automotive component manufacturer within the Eastern Cape served as the basis for this study. A detailed literature review was conducted and a questionnaire was drawn up and distributed in an attempt to assess the three prevalent elements for the creation of innovation advantage through intrapreneurship as reviewed in the literature survey. The three elements were: individual intrapreneurial traits, organisational barriers and enablers of intrapreneurship and the influence of precipitating events on intrapreneurship. The research was conducted and recommendations were made based on the objectives of this study in relation to the organisation under study, FMSS.
- Full Text:
- Date Issued: 2006
The South African coelacanths — an account of what is known after three submersible expeditions
- Hissmann, K, Fricke, H, Schauer, J
- Authors: Hissmann, K , Fricke, H , Schauer, J
- Date: 2006
- Language: English
- Type: text , Article
- Identifier: vital:7131 , http://hdl.handle.net/10962/d1011772
- Description: Using the manned submersible Jago, the habits, distribution and number of coelacanths within all main submarine canyons of the Greater St Lucia Wetland Park were studied during 47 survey dives, with a total bottom time of 166 hours at depths ranging from 46 to 359 m, between 2002 and 2004. Twenty-four individuals were positively identified from three of the canyons, primarily from inside caves at or close to the canyon edges at depths of 96–133 m with water temperatures between 16 and 22.5°C. The population size of coelacanths within the canyons is assumed to be relatively small; coelacanths are resident but not widespread nor abundant within the park.
- Full Text:
- Date Issued: 2006
- Authors: Hissmann, K , Fricke, H , Schauer, J
- Date: 2006
- Language: English
- Type: text , Article
- Identifier: vital:7131 , http://hdl.handle.net/10962/d1011772
- Description: Using the manned submersible Jago, the habits, distribution and number of coelacanths within all main submarine canyons of the Greater St Lucia Wetland Park were studied during 47 survey dives, with a total bottom time of 166 hours at depths ranging from 46 to 359 m, between 2002 and 2004. Twenty-four individuals were positively identified from three of the canyons, primarily from inside caves at or close to the canyon edges at depths of 96–133 m with water temperatures between 16 and 22.5°C. The population size of coelacanths within the canyons is assumed to be relatively small; coelacanths are resident but not widespread nor abundant within the park.
- Full Text:
- Date Issued: 2006
The significance of the local trade in natural resource products for livelihoods and poverty alleviation in South Africa
- Authors: Shackleton, Sheona E
- Date: 2006
- Subjects: Poverty -- South Africa Rural poor -- South Africa Natural resources -- South Africa Selling -- Handicraft South Africa -- Commerce
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4776 , http://hdl.handle.net/10962/d1011731
- Description: What role can the commercialisation of natural resource products play in the efforts to reduce poverty and vulnerability and how can this be enhanced? With poverty alleviation at the top of the global development agenda, this is a question posed by many scholars, practitioners, donor agencies and government departments operating at the environment-development interface. However, recent commentary on this issue is mixed and ambiguous, with some observers being quite optimistic regarding the potential of these products, while others hold a counter view. This thesis explores the livelihood contributions and poverty alleviation potential of four products traded locally in the Bushbuckridge municipality, South Africa; namely traditional brooms, reed mats, woodcraft and a beer made from the fruits of Sclerocarya birrea. A common approach, employing both quantitative and qualitative methods, was used to investigate the harvesting, processing and marketing arrangements, sustainability and livelihood contributions of each product. The results illustrate that any inference regarding the potential of the trade to alleviate poverty depends on how poverty is defined and interpreted, and on whether the role of these products is assessed from a holistic livelihood perspective that includes notions of vulnerability, alternatives and choice, diversification and the needs of rural producers themselves. Overall, the products studied were key in enhancing the livelihood security of the poorest members of society, forming an important safety net and assisting in raising household incomes to levels equivalent to the wider population, but generally were unlikely, on their own, to provide a route out of poverty. However, there were notable exceptions, with marked variation evident both within and across products. Incomes often surpassed local wage rates, and a minority of producers were obtaining returns equivalent to or greater than the official minimum wage. Other benefits, such as the opportunity to work from home or to diversify the livelihood portfolio, were also crucial, with the trade representing different livelihood strategies for different households. When viewed within the context of rising unemployment and HIV/AIDS these findings assume greater significance. While the trades were complex and growth limited, livelihood benefits could be improved on a sustainable basis if the sector was given the attention and support it deserves.
- Full Text:
- Date Issued: 2006
- Authors: Shackleton, Sheona E
- Date: 2006
- Subjects: Poverty -- South Africa Rural poor -- South Africa Natural resources -- South Africa Selling -- Handicraft South Africa -- Commerce
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4776 , http://hdl.handle.net/10962/d1011731
- Description: What role can the commercialisation of natural resource products play in the efforts to reduce poverty and vulnerability and how can this be enhanced? With poverty alleviation at the top of the global development agenda, this is a question posed by many scholars, practitioners, donor agencies and government departments operating at the environment-development interface. However, recent commentary on this issue is mixed and ambiguous, with some observers being quite optimistic regarding the potential of these products, while others hold a counter view. This thesis explores the livelihood contributions and poverty alleviation potential of four products traded locally in the Bushbuckridge municipality, South Africa; namely traditional brooms, reed mats, woodcraft and a beer made from the fruits of Sclerocarya birrea. A common approach, employing both quantitative and qualitative methods, was used to investigate the harvesting, processing and marketing arrangements, sustainability and livelihood contributions of each product. The results illustrate that any inference regarding the potential of the trade to alleviate poverty depends on how poverty is defined and interpreted, and on whether the role of these products is assessed from a holistic livelihood perspective that includes notions of vulnerability, alternatives and choice, diversification and the needs of rural producers themselves. Overall, the products studied were key in enhancing the livelihood security of the poorest members of society, forming an important safety net and assisting in raising household incomes to levels equivalent to the wider population, but generally were unlikely, on their own, to provide a route out of poverty. However, there were notable exceptions, with marked variation evident both within and across products. Incomes often surpassed local wage rates, and a minority of producers were obtaining returns equivalent to or greater than the official minimum wage. Other benefits, such as the opportunity to work from home or to diversify the livelihood portfolio, were also crucial, with the trade representing different livelihood strategies for different households. When viewed within the context of rising unemployment and HIV/AIDS these findings assume greater significance. While the trades were complex and growth limited, livelihood benefits could be improved on a sustainable basis if the sector was given the attention and support it deserves.
- Full Text:
- Date Issued: 2006
The sharing of pension benefits on divorce: An inevitable affair?
- Authors: Glover, Graham
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186723 , vital:44528 , xlink:href="Print only"
- Description: One of the invariable consequences of divorce is that the patrimonial assets of the marriage have to be divided up between the two parties. At a primary level, the way in which this will occur will be determined by a number of factors: the matrimonial property regime under which the parties had been married; the relevant provisions of the Divorce Act (Act 70 of 1979) that deal with the question of the patrimonial consequences of divorce; as well as any agreement on this often ticklish matter that can be reached by the parties prior to the divorce action. Approximately fourteen years ago, section 7 of the Divorce Act was amended to allow a divorced spouse to share in the pension interests of the other spouse. There is some polemic, though, as to the interpretation of this provision: in particular, it is not clear whether this pension benefit will automatically form part of the assets that are susceptible to division, or whether a prayer to this effect must specifically be sought. After a consideration of the current legal position regarding the sharing of pension benefits generally, this note will examine this specific debate.
- Full Text:
- Date Issued: 2006
- Authors: Glover, Graham
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/186723 , vital:44528 , xlink:href="Print only"
- Description: One of the invariable consequences of divorce is that the patrimonial assets of the marriage have to be divided up between the two parties. At a primary level, the way in which this will occur will be determined by a number of factors: the matrimonial property regime under which the parties had been married; the relevant provisions of the Divorce Act (Act 70 of 1979) that deal with the question of the patrimonial consequences of divorce; as well as any agreement on this often ticklish matter that can be reached by the parties prior to the divorce action. Approximately fourteen years ago, section 7 of the Divorce Act was amended to allow a divorced spouse to share in the pension interests of the other spouse. There is some polemic, though, as to the interpretation of this provision: in particular, it is not clear whether this pension benefit will automatically form part of the assets that are susceptible to division, or whether a prayer to this effect must specifically be sought. After a consideration of the current legal position regarding the sharing of pension benefits generally, this note will examine this specific debate.
- Full Text:
- Date Issued: 2006
The role of salinity as an abiotic driver of ecological condition in a rural agricultural catchment
- Authors: Lerotholi, Sekhonyana
- Date: 2006
- Subjects: Soils, Salts in -- South Africa -- Kat River , Water salinization -- South Africa -- Kat River , Water quality -- South Africa -- Kat River , Salinization -- Control -- South Africa -- Kat River , Agricultural pollution -- South Africa -- Kat River , Aquatic ecology -- South Africa -- Kat River , Salinity -- South Africa -- Kat River
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4852 , http://hdl.handle.net/10962/d1005528 , Soils, Salts in -- South Africa -- Kat River , Water salinization -- South Africa -- Kat River , Water quality -- South Africa -- Kat River , Salinization -- Control -- South Africa -- Kat River , Agricultural pollution -- South Africa -- Kat River , Aquatic ecology -- South Africa -- Kat River , Salinity -- South Africa -- Kat River
- Description: The Kat River is an agricultural catchment that drains salt rich geology. Potential salinity impacts on ecological condition of the river were investigated. Monthly salt concentrations and flow discharges were monitored at ten sites along the Kat River below the Kat Dam. Monthly salt loads were computed to relate salinity to land use and ionic data used to assess the toxicity of major salts using the TIMS model. Concentration duration curves for sodium chloride were derived from flow concentration relationships, representing sodium chloride concentrations to which the aquatic ecosystem had been exposed. The ecological condition was assessed at nineteen sites using SASS5 biotic index over four seasons. Finally, the modelled instream salt concentrations and bioasessments were evaluated in terms of the modelled level of species protection afforded at different salt concentrations. Species Sensitivity Distributions (SSDs) were used for this exercise. There was a general downstream increase in salinity with the minimum concentrations recorded at the Fairbain tributary (84 mg/L) and maximum levels at the sewage outfall in Fort Beaufort (1222 mg/L). There was evidence that citrus irrigation upstream of Fort Beaufort increased salinisation. Sodium chloride, and to a lesser extent magnesium sulphate, were the dominant salts in the Kat River catchment, with the latter being more toxic. However these had little or no impact on the aquatic ecosystem. Flow-derived sodium chloride concentrations showed that both the Balfour and Blinkwater tributaries were in a fair/ poor condition. However with regard to ecological condition, it was demonstrated that the river is generally in a good state except for the Blinkwater River and the lower catchment. Degraded habitat condition at the Blinkwater was responsible for poor ecological condition. Integrating SSD derived classes, sodium chloride classes and ecological condition indicated that sodium chloride is a driver of ecological condition at the sewage treatment works and the subsequent site (only two of nineteen biomonitoring sites).
- Full Text:
- Date Issued: 2006
- Authors: Lerotholi, Sekhonyana
- Date: 2006
- Subjects: Soils, Salts in -- South Africa -- Kat River , Water salinization -- South Africa -- Kat River , Water quality -- South Africa -- Kat River , Salinization -- Control -- South Africa -- Kat River , Agricultural pollution -- South Africa -- Kat River , Aquatic ecology -- South Africa -- Kat River , Salinity -- South Africa -- Kat River
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4852 , http://hdl.handle.net/10962/d1005528 , Soils, Salts in -- South Africa -- Kat River , Water salinization -- South Africa -- Kat River , Water quality -- South Africa -- Kat River , Salinization -- Control -- South Africa -- Kat River , Agricultural pollution -- South Africa -- Kat River , Aquatic ecology -- South Africa -- Kat River , Salinity -- South Africa -- Kat River
- Description: The Kat River is an agricultural catchment that drains salt rich geology. Potential salinity impacts on ecological condition of the river were investigated. Monthly salt concentrations and flow discharges were monitored at ten sites along the Kat River below the Kat Dam. Monthly salt loads were computed to relate salinity to land use and ionic data used to assess the toxicity of major salts using the TIMS model. Concentration duration curves for sodium chloride were derived from flow concentration relationships, representing sodium chloride concentrations to which the aquatic ecosystem had been exposed. The ecological condition was assessed at nineteen sites using SASS5 biotic index over four seasons. Finally, the modelled instream salt concentrations and bioasessments were evaluated in terms of the modelled level of species protection afforded at different salt concentrations. Species Sensitivity Distributions (SSDs) were used for this exercise. There was a general downstream increase in salinity with the minimum concentrations recorded at the Fairbain tributary (84 mg/L) and maximum levels at the sewage outfall in Fort Beaufort (1222 mg/L). There was evidence that citrus irrigation upstream of Fort Beaufort increased salinisation. Sodium chloride, and to a lesser extent magnesium sulphate, were the dominant salts in the Kat River catchment, with the latter being more toxic. However these had little or no impact on the aquatic ecosystem. Flow-derived sodium chloride concentrations showed that both the Balfour and Blinkwater tributaries were in a fair/ poor condition. However with regard to ecological condition, it was demonstrated that the river is generally in a good state except for the Blinkwater River and the lower catchment. Degraded habitat condition at the Blinkwater was responsible for poor ecological condition. Integrating SSD derived classes, sodium chloride classes and ecological condition indicated that sodium chloride is a driver of ecological condition at the sewage treatment works and the subsequent site (only two of nineteen biomonitoring sites).
- Full Text:
- Date Issued: 2006
The role of nutrients in the biological control of water lettuce, Pistia stratiotes lamarck (Araceae) by the leaf-feeding weevil, Neohydronomus affinis Hustache (Coleoptera: Curculionidae) with particular reference to eutrophic conditions
- Authors: Moore, Gareth Ryan
- Date: 2006
- Subjects: Water lettuce -- Biological control , Araceae , Beetles , Curculionidae , Weeds -- Biological control , Pests -- Biological control
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5759 , http://hdl.handle.net/10962/d1005447 , Water lettuce -- Biological control , Araceae , Beetles , Curculionidae , Weeds -- Biological control , Pests -- Biological control
- Description: Water lettuce, Pistia stratiotes Lamarck (Araceae) is a South American plant that has the potential to be a very damaging and important aquatic weed in many tropical countries, including South Africa. It has the potential to rapidly multiply vegetatively and completely cover watercourses in a very short space of time outside of its natural range under ideal conditions and without its natural enemies. In such instances, the weed may cause hindrances to water transport and fishing, increasing chances of malaria, as well as affecting the natural ecology of the system. Water lettuce can also set seed, which may lay dormant for long periods, germinating when conditions are favourable. It is therefore very necessary to adopt control methods against the weed where it is a problem. However, water lettuce has also been effectively and completely controlled in many countries by the leaf-feeding weevil, Neohydronomus affinis Hustache. High nutrient levels in the form of nitrates and phosphates have been shown to have largely negative effects on biological control in several studies, with control being incomplete or taking longer than in similar areas with lower nutrient levels. The effectiveness of N. affinis on the biological control of water lettuce was investigated in a laboratory study, growing P. stratiotes plants with and without insects at different nutrient concentrations. In these studies biological control of water lettuce with N. affinis was found to be complete under eutrophic nutrient conditions, although control took longer when higher nutrient levels were tested. A field site study was conducted at a sewage settlement pond in Cape Recife Nature Reserve near Port Elizabeth, South Africa. This highly eutrophic system was used as a field example for the effectiveness of biocontrol of P. stratiotes by N. affinis under eutrophic conditions. The weevils at Cape Recife caused a massive and rapid crash in the percentage coverage of the weed, from 100% in May 2003, to approximately 0.5 % in September 2003. Plant growth parameters were also found to decrease considerably in size correspondingly with this crash from May 2003 until spring 2003. Plant size only again started to increase gradually but steadily through spring 2003 and into summer. In the laboratory studies, the fecundity of weevils was shown to be much higher on plants grown under higher nutrient concentrations than on plants grown in lower nutrient concentrations. The results from the wing-muscle analysis under different nutrient concentrations were not easy to interpret, and there were few differences in wing muscle state between most of the concentrations. From these findings it is suggested that nutrient concentration, particularly high levels of nitrates and phosphates is not a limiting factor in terms of effective biological control of P. stratiotes with N. affinis, but that under high nutrient conditions biological control might take longer.
- Full Text:
- Date Issued: 2006
- Authors: Moore, Gareth Ryan
- Date: 2006
- Subjects: Water lettuce -- Biological control , Araceae , Beetles , Curculionidae , Weeds -- Biological control , Pests -- Biological control
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5759 , http://hdl.handle.net/10962/d1005447 , Water lettuce -- Biological control , Araceae , Beetles , Curculionidae , Weeds -- Biological control , Pests -- Biological control
- Description: Water lettuce, Pistia stratiotes Lamarck (Araceae) is a South American plant that has the potential to be a very damaging and important aquatic weed in many tropical countries, including South Africa. It has the potential to rapidly multiply vegetatively and completely cover watercourses in a very short space of time outside of its natural range under ideal conditions and without its natural enemies. In such instances, the weed may cause hindrances to water transport and fishing, increasing chances of malaria, as well as affecting the natural ecology of the system. Water lettuce can also set seed, which may lay dormant for long periods, germinating when conditions are favourable. It is therefore very necessary to adopt control methods against the weed where it is a problem. However, water lettuce has also been effectively and completely controlled in many countries by the leaf-feeding weevil, Neohydronomus affinis Hustache. High nutrient levels in the form of nitrates and phosphates have been shown to have largely negative effects on biological control in several studies, with control being incomplete or taking longer than in similar areas with lower nutrient levels. The effectiveness of N. affinis on the biological control of water lettuce was investigated in a laboratory study, growing P. stratiotes plants with and without insects at different nutrient concentrations. In these studies biological control of water lettuce with N. affinis was found to be complete under eutrophic nutrient conditions, although control took longer when higher nutrient levels were tested. A field site study was conducted at a sewage settlement pond in Cape Recife Nature Reserve near Port Elizabeth, South Africa. This highly eutrophic system was used as a field example for the effectiveness of biocontrol of P. stratiotes by N. affinis under eutrophic conditions. The weevils at Cape Recife caused a massive and rapid crash in the percentage coverage of the weed, from 100% in May 2003, to approximately 0.5 % in September 2003. Plant growth parameters were also found to decrease considerably in size correspondingly with this crash from May 2003 until spring 2003. Plant size only again started to increase gradually but steadily through spring 2003 and into summer. In the laboratory studies, the fecundity of weevils was shown to be much higher on plants grown under higher nutrient concentrations than on plants grown in lower nutrient concentrations. The results from the wing-muscle analysis under different nutrient concentrations were not easy to interpret, and there were few differences in wing muscle state between most of the concentrations. From these findings it is suggested that nutrient concentration, particularly high levels of nitrates and phosphates is not a limiting factor in terms of effective biological control of P. stratiotes with N. affinis, but that under high nutrient conditions biological control might take longer.
- Full Text:
- Date Issued: 2006
The role of language and mediation in selected aspects of contemporary culture
- Authors: Allen, Nicholas Peter Legh
- Date: 2006
- Subjects: Language and languages -- Philosophy , Language and education
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8413 , http://hdl.handle.net/10948/468 , Language and languages -- Philosophy , Language and education
- Description: Statement of the Problem: Specifically, how suitable is a textual language in communicating “irrational concepts” and religious myths designed to explain the irrational? Furthermore, how important is the mastery of a textual language apropos of our conceptual processes and in what ways can the structure of a specific language-game impact on a person’s conceptual abilities? To undertake this enquiry, certain assumptions will have to be made. For example, it is accepted that everything we interpret and ultimately understand is mediated solely through language in the broad sense (which includes visual cognition or literacy). Here it is accepted that without language we cannot think. Indeed, even our most private thoughts are based on a language, which embodies communally sanctioned criteria. Hypothesis: It is then the premise of this dissertation that the very architecture of a person’s mother-tongue has a profound influence on the worldview and perception of a particular person. Also it is possible to consider that certain languages, by virtue of their very structure, either hinder or facilitate certain cognitive development or potential. Further, if we could but increase the linguistic proficiency of our citizens, we will be better positioned to develop a critical mass of people who are problem solvers, mathematicians and conceptualizers; and who will address the shortfall of graduates in science, engineering, technology and business in South Africa. If in any way accurate, this would tend to imply that (inter alia) the retention rate of potential graduates in the SET and business disciplines will be significantly improved if educational policy-makers embraced even the most basic tenets of the linguistic paradigm.
- Full Text:
- Date Issued: 2006
- Authors: Allen, Nicholas Peter Legh
- Date: 2006
- Subjects: Language and languages -- Philosophy , Language and education
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8413 , http://hdl.handle.net/10948/468 , Language and languages -- Philosophy , Language and education
- Description: Statement of the Problem: Specifically, how suitable is a textual language in communicating “irrational concepts” and religious myths designed to explain the irrational? Furthermore, how important is the mastery of a textual language apropos of our conceptual processes and in what ways can the structure of a specific language-game impact on a person’s conceptual abilities? To undertake this enquiry, certain assumptions will have to be made. For example, it is accepted that everything we interpret and ultimately understand is mediated solely through language in the broad sense (which includes visual cognition or literacy). Here it is accepted that without language we cannot think. Indeed, even our most private thoughts are based on a language, which embodies communally sanctioned criteria. Hypothesis: It is then the premise of this dissertation that the very architecture of a person’s mother-tongue has a profound influence on the worldview and perception of a particular person. Also it is possible to consider that certain languages, by virtue of their very structure, either hinder or facilitate certain cognitive development or potential. Further, if we could but increase the linguistic proficiency of our citizens, we will be better positioned to develop a critical mass of people who are problem solvers, mathematicians and conceptualizers; and who will address the shortfall of graduates in science, engineering, technology and business in South Africa. If in any way accurate, this would tend to imply that (inter alia) the retention rate of potential graduates in the SET and business disciplines will be significantly improved if educational policy-makers embraced even the most basic tenets of the linguistic paradigm.
- Full Text:
- Date Issued: 2006
The response of an original equipment manufacturer to the Motor Industry Development Programme: a case study
- Authors: Franse, Ricardo
- Date: 2006
- Subjects: Motor Industry Development Programme Automobile industry and trade -- South Africa -- Case studies Automobile industry and trade -- Government policy -- South Africa Foreign trade regulation -- South Africa -- Case studies South Africa -- Commercial policy -- Case studies
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:761 , http://hdl.handle.net/10962/d1003882
- Description: On the 21st September 1995, the government introduced the Motor Industry Development Programme (MIDP), in compliance with the General Agreement on Tariffs and Trade (GATT) and the World Trade Organization (WTO). Deliberate efforts by the South African government were required to promote structural changes to the domestic motor industry by opening up the economy to international competition through a programme of tariff reduction and export promotion. The integration of the South African automotive industry into global markets would have been extremely difficult, if not impossible, without the MIDP and it would thus be safe to conclude that the economic performance of the researched would have been close to impossible if it was not for the MIDP. The MIDP, as an economic policy, has been embraced by the researched company as a "vehicle" to drive corporate goals in terms of value creation for all stakeholders. The research proposition that the MIDP as an economic policy has contributed to the economic performance of the researched company is examined. In this respect, Annual and Management Accounting reports were analyzed to determine the effect the MIDP has had on the researched company over the last ten years. In addition, two semi-structured interviews were also conducted with the Strategic Finance Planning executive and the Financial Controller of the company. The results show that the MIDP has had positive spin-offs for the researched company. The same results should be valid for the other original equipment manufacturers (OEMs) in the local automotive industry that have embraced the MIDP as a vehicle to create economic value added.
- Full Text:
- Date Issued: 2006
- Authors: Franse, Ricardo
- Date: 2006
- Subjects: Motor Industry Development Programme Automobile industry and trade -- South Africa -- Case studies Automobile industry and trade -- Government policy -- South Africa Foreign trade regulation -- South Africa -- Case studies South Africa -- Commercial policy -- Case studies
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:761 , http://hdl.handle.net/10962/d1003882
- Description: On the 21st September 1995, the government introduced the Motor Industry Development Programme (MIDP), in compliance with the General Agreement on Tariffs and Trade (GATT) and the World Trade Organization (WTO). Deliberate efforts by the South African government were required to promote structural changes to the domestic motor industry by opening up the economy to international competition through a programme of tariff reduction and export promotion. The integration of the South African automotive industry into global markets would have been extremely difficult, if not impossible, without the MIDP and it would thus be safe to conclude that the economic performance of the researched would have been close to impossible if it was not for the MIDP. The MIDP, as an economic policy, has been embraced by the researched company as a "vehicle" to drive corporate goals in terms of value creation for all stakeholders. The research proposition that the MIDP as an economic policy has contributed to the economic performance of the researched company is examined. In this respect, Annual and Management Accounting reports were analyzed to determine the effect the MIDP has had on the researched company over the last ten years. In addition, two semi-structured interviews were also conducted with the Strategic Finance Planning executive and the Financial Controller of the company. The results show that the MIDP has had positive spin-offs for the researched company. The same results should be valid for the other original equipment manufacturers (OEMs) in the local automotive industry that have embraced the MIDP as a vehicle to create economic value added.
- Full Text:
- Date Issued: 2006
The relationship between the development and use of teaching and learning support materials: the case of "A year of special days" booklet
- Authors: Urenje, Shepherd
- Date: 2006
- Subjects: Southern African Development Community Teaching -- Aids and devices -- South Africa Environmental education -- South Africa -- Case studies Environmental education -- Curricula -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1724 , http://hdl.handle.net/10962/d1003607
- Description: This research is an interpretive case study, which investigated the relationship between the development and use of the teaching and learning support material, “A Year of Special Days”. An in depth investigation was conducted in South Africa and Zimbabwe where developers and users of the booklet were asked to contribute their experiences with the booklet through questionnaires, semi-structured interviews and workshops. Developers contributed on the purpose for which the booklet was produced while the users explained how the booklet was being used in different contexts. The research also tracked the development and use of booklet in the Southern African Development Community (SADC) region through a workshop held at the Environmental Education Association of Southern Africa (EEASA) Conference in Lusaka, Zambia, in May 2005. Some personal interviews and informal encounters with people who have used it in the past and those using it now were also conducted at EEASA. This case study explored the axes of tension between the development and use of the resource material, “A Year of Special Days”, with the view to informing development and use of materials at the SADC Centre. A long-term intention is to use the framework developed, for similar work in the wider SADC region. The research recommended on how the SADC Centre can track the relationship between the materials developed at the Centre and their use in different contexts. The study established that the booklet “A Year of Special Days” was initially developed for informal education by faith communities mainly in the Anglican Church but turned out to be a resource more applicable for formal education mainly in the national school system of South Africa for environmental learning. That the resource material lacked effective monitoring support from the developers for the initial intended users where there was no formal education structure was an important link in materials development. It is important for resource materials developers to facilitate the participatory monitoring and evaluation of resource materials when they are in use. The study also established that SADC resources materials are easily adaptable and that the process of resource materials development offers important networking opportunities, which allow the adaptation and adoption of similar resource materials for local contexts. The booklet was adapted and adopted by at least eight countries in the form of a booklet, a calendar or a poster. This study provides some recommendations that may be used to guide the Southern African Development Community Regional Environmental Education Programme (REEP) to enhance processes in the development and adaptation of teaching and learning support materials by environmental educators in southern Africa.
- Full Text:
- Date Issued: 2006
- Authors: Urenje, Shepherd
- Date: 2006
- Subjects: Southern African Development Community Teaching -- Aids and devices -- South Africa Environmental education -- South Africa -- Case studies Environmental education -- Curricula -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1724 , http://hdl.handle.net/10962/d1003607
- Description: This research is an interpretive case study, which investigated the relationship between the development and use of the teaching and learning support material, “A Year of Special Days”. An in depth investigation was conducted in South Africa and Zimbabwe where developers and users of the booklet were asked to contribute their experiences with the booklet through questionnaires, semi-structured interviews and workshops. Developers contributed on the purpose for which the booklet was produced while the users explained how the booklet was being used in different contexts. The research also tracked the development and use of booklet in the Southern African Development Community (SADC) region through a workshop held at the Environmental Education Association of Southern Africa (EEASA) Conference in Lusaka, Zambia, in May 2005. Some personal interviews and informal encounters with people who have used it in the past and those using it now were also conducted at EEASA. This case study explored the axes of tension between the development and use of the resource material, “A Year of Special Days”, with the view to informing development and use of materials at the SADC Centre. A long-term intention is to use the framework developed, for similar work in the wider SADC region. The research recommended on how the SADC Centre can track the relationship between the materials developed at the Centre and their use in different contexts. The study established that the booklet “A Year of Special Days” was initially developed for informal education by faith communities mainly in the Anglican Church but turned out to be a resource more applicable for formal education mainly in the national school system of South Africa for environmental learning. That the resource material lacked effective monitoring support from the developers for the initial intended users where there was no formal education structure was an important link in materials development. It is important for resource materials developers to facilitate the participatory monitoring and evaluation of resource materials when they are in use. The study also established that SADC resources materials are easily adaptable and that the process of resource materials development offers important networking opportunities, which allow the adaptation and adoption of similar resource materials for local contexts. The booklet was adapted and adopted by at least eight countries in the form of a booklet, a calendar or a poster. This study provides some recommendations that may be used to guide the Southern African Development Community Regional Environmental Education Programme (REEP) to enhance processes in the development and adaptation of teaching and learning support materials by environmental educators in southern Africa.
- Full Text:
- Date Issued: 2006
The relationship between interest rates and inflation in South Africa : revisiting Fisher's hypothesis
- Mitchell-Innes, Henry Alexander
- Authors: Mitchell-Innes, Henry Alexander
- Date: 2006
- Subjects: Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:991 , http://hdl.handle.net/10962/d1002726 , Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Description: This thesis investigates the relationship between expected inflation and nominal interest rates in South Africa and the extent to which the Fisher effect hypothesis holds. The hypothesis, proposed by Fisher (1930), that the nominal rate of interest should reflect movements in the expected rate of inflation has been the subject of much empirical research in many industrialised countries. This wealth of literature can be attributed to various factors including the pivotal role that the nominal rate of interest and, perhaps more importantly, the real rate of interest plays in the economy. The validity of the Fisher effect also has important implications for monetary policy and needs to be considered by central banks. Few studies have been conducted in South Africa to validate this important hypothesis. The analysis uses the 3-month bankers’ acceptance rate and the 10-year government bond rate to proxy both short- and long-term interest rates. The existence of a long-run unit proportional relationship between nominal interest rates and expected inflation is tested using Johansen’s cointegration test. The data is analysed for the period April 2000 to July 2005 as the research aims to establish whether the Fisher relationship holds within an inflation targeting monetary policy framework. The short-run Fisher effect is not empirically verified. This is due to the effects of the monetary policy transmission mechanism and implies that short-term nominal interest rates are a good indication of the stance of monetary policy. A long-run cointegrating relationship is established between long-term interest rates and expected inflation. The long-run adjustment is less than unity, which can be attributed to the credibility of the inflation-targeting framework.
- Full Text:
- Date Issued: 2006
- Authors: Mitchell-Innes, Henry Alexander
- Date: 2006
- Subjects: Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:991 , http://hdl.handle.net/10962/d1002726 , Fisher effect (Economics) , Interest rates -- South Africa , Interest rates -- Effect of inflation -- South Africa , Inflation (Finance) -- South Africa , Monetary policy -- South Africa , Banks and banking, Central -- South Africa , South Africa -- Economic conditions
- Description: This thesis investigates the relationship between expected inflation and nominal interest rates in South Africa and the extent to which the Fisher effect hypothesis holds. The hypothesis, proposed by Fisher (1930), that the nominal rate of interest should reflect movements in the expected rate of inflation has been the subject of much empirical research in many industrialised countries. This wealth of literature can be attributed to various factors including the pivotal role that the nominal rate of interest and, perhaps more importantly, the real rate of interest plays in the economy. The validity of the Fisher effect also has important implications for monetary policy and needs to be considered by central banks. Few studies have been conducted in South Africa to validate this important hypothesis. The analysis uses the 3-month bankers’ acceptance rate and the 10-year government bond rate to proxy both short- and long-term interest rates. The existence of a long-run unit proportional relationship between nominal interest rates and expected inflation is tested using Johansen’s cointegration test. The data is analysed for the period April 2000 to July 2005 as the research aims to establish whether the Fisher relationship holds within an inflation targeting monetary policy framework. The short-run Fisher effect is not empirically verified. This is due to the effects of the monetary policy transmission mechanism and implies that short-term nominal interest rates are a good indication of the stance of monetary policy. A long-run cointegrating relationship is established between long-term interest rates and expected inflation. The long-run adjustment is less than unity, which can be attributed to the credibility of the inflation-targeting framework.
- Full Text:
- Date Issued: 2006
The relationship between human exploitation pressure and condition of mussel populations along the south coast of South Africa
- Rius, Marc, Kaehler, Sven, McQuaid, Christopher D
- Authors: Rius, Marc , Kaehler, Sven , McQuaid, Christopher D
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6913 , http://hdl.handle.net/10962/d1011876
- Description: Human exploitation of intertidal organisms in South Africa is an ancient activity based principally on mussels. We studied mussel populations and patterns of exploitation along a 160-km stretch of the south coast. Photographs (100 per site) were taken of the intertidal rocks at each of 14 sites, covering a range of exploitation intensities. Percentage cover was negatively correlated with number of mussel patches and positively correlated with mean shell width. PCA analysis identified groups of sites: a) accessible and unprotected sites: low cover, small mussels, patchy distribution; b) inaccessible sites and sites next to, or within, nature reserves: high percentage cover, large animals, less patchy distributions. Affluent coastal settlements also seem to confer protection against harvesting. Harvester distribution was examined by aerial surveys and combined with information on distance to the nearest beach access point and number of households within 7 km for each site. Sites within reserves and inaccessible sites had low densities of collectors, whereas sites near urban areas and in the Ciskei had the highest densities. All correlations between indicators of human exploitation and condition of mussel populations were non-significant. However, number of collectors showed positive trends with number of patches and negative trends for the two other variables. The results indicate much lower levels of exploitation than in the neighouring Transkei region, and suggest a high degree of background variability in mussel population structure.
- Full Text:
- Date Issued: 2006
- Authors: Rius, Marc , Kaehler, Sven , McQuaid, Christopher D
- Date: 2006
- Language: English
- Type: Article
- Identifier: vital:6913 , http://hdl.handle.net/10962/d1011876
- Description: Human exploitation of intertidal organisms in South Africa is an ancient activity based principally on mussels. We studied mussel populations and patterns of exploitation along a 160-km stretch of the south coast. Photographs (100 per site) were taken of the intertidal rocks at each of 14 sites, covering a range of exploitation intensities. Percentage cover was negatively correlated with number of mussel patches and positively correlated with mean shell width. PCA analysis identified groups of sites: a) accessible and unprotected sites: low cover, small mussels, patchy distribution; b) inaccessible sites and sites next to, or within, nature reserves: high percentage cover, large animals, less patchy distributions. Affluent coastal settlements also seem to confer protection against harvesting. Harvester distribution was examined by aerial surveys and combined with information on distance to the nearest beach access point and number of households within 7 km for each site. Sites within reserves and inaccessible sites had low densities of collectors, whereas sites near urban areas and in the Ciskei had the highest densities. All correlations between indicators of human exploitation and condition of mussel populations were non-significant. However, number of collectors showed positive trends with number of patches and negative trends for the two other variables. The results indicate much lower levels of exploitation than in the neighouring Transkei region, and suggest a high degree of background variability in mussel population structure.
- Full Text:
- Date Issued: 2006
The relationship between Accounting 1 and Accounting 3 results
- Mazwi, Zukile, Stack, Elizabeth M
- Authors: Mazwi, Zukile , Stack, Elizabeth M
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: Conference paper
- Identifier: vital:6064 , http://hdl.handle.net/10962/d1004609
- Full Text:
- Date Issued: 2006
- Authors: Mazwi, Zukile , Stack, Elizabeth M
- Date: 2006
- Subjects: To be catalogued
- Language: English
- Type: Conference paper
- Identifier: vital:6064 , http://hdl.handle.net/10962/d1004609
- Full Text:
- Date Issued: 2006