1H NMR-based kinetic and mechanistic study of unusual skeletal rearrangements of a spirobornyl tosylate derivative
- Lobb, Kevin A, Kaye, Perry T
- Authors: Lobb, Kevin A , Kaye, Perry T
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448858 , vital:74766 , xlink:href="https://doi.org/10.1002/poc.1699"
- Description: 1H NMR analysis of the kinetics of skeletal rearrangement of optically pure 3,3-xylyl-2-exo-bornyl tosylate in CDCl3 indicates the operation of tandem autocatalytic and pseudo-first-order transformations, leading sequentially to a pairof isomeric camphene derivatives and involving partial racemization. Changing the solvent system has been shown topermit the chemoselective isolation of either of the isomeric camphenes.
- Full Text:
- Date Issued: 2011
- Authors: Lobb, Kevin A , Kaye, Perry T
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/448858 , vital:74766 , xlink:href="https://doi.org/10.1002/poc.1699"
- Description: 1H NMR analysis of the kinetics of skeletal rearrangement of optically pure 3,3-xylyl-2-exo-bornyl tosylate in CDCl3 indicates the operation of tandem autocatalytic and pseudo-first-order transformations, leading sequentially to a pairof isomeric camphene derivatives and involving partial racemization. Changing the solvent system has been shown topermit the chemoselective isolation of either of the isomeric camphenes.
- Full Text:
- Date Issued: 2011
A Critical Analysis of the Role of School Governing Bodies in the Recruitment, Selection and Transfer of Educators in the Butterworth District
- Authors: Sifuba, Mpilo
- Date: 2011
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3495 , vital:43616
- Description: Recruitment, selection and transfer of educators were decentralized after South Africa became a democratic state in 1994 and shifted to School Governing Bodies. The legislation promoted a shared governance and participation of parents in issues that are related to recruitment, selection and transfer of educators, but parents are struggling and facing challenges in performing these tasks as School Governing Body members especially in the Butterworth district, as a result of that Butterworth district is experiencing problems with increasing number of disputes resulting from the appointment of educators after they have been recommended by the School Governing Bodies. This study focuses on the recruitment, selection and transfer of educators in the Butterworth district of the Eastern Cape Province of South Africa. The study sought to reveal the thinking behind government insistence on giving the School Governing Bodies a responsibility to recruit, select and transfer educators knowing fully well that they do not perform this responsibility. A qualitative approach was used to explore and challenge this phenomenon. This approach is concerned with understanding social phenomenon from the participant’s perspective. In depth semi – structured interviews with open ended questions were used to bring the researcher more closer to a more plausible perspective of this phenomenon. Moreover, they were used because they are the most appropriate method to capture the data. The findings revealed that School Governing Bodies are faced with challenges such as: high level of illiteracy, manipulation of School Governing Bodies by school management, unions and candidates, the issue of regionalism and kickbacks, capacity building and empowerment and role played by the Departmental Officials. By conducting this study, we hope that the findings might contribute in identifying the disjuncture between the policy and the practice in issues pertaining to educator recruitment, selection and transfers. , Thesis (MMED) -- Faculty of Educational Sciences, 2011
- Full Text:
- Date Issued: 2011
- Authors: Sifuba, Mpilo
- Date: 2011
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3495 , vital:43616
- Description: Recruitment, selection and transfer of educators were decentralized after South Africa became a democratic state in 1994 and shifted to School Governing Bodies. The legislation promoted a shared governance and participation of parents in issues that are related to recruitment, selection and transfer of educators, but parents are struggling and facing challenges in performing these tasks as School Governing Body members especially in the Butterworth district, as a result of that Butterworth district is experiencing problems with increasing number of disputes resulting from the appointment of educators after they have been recommended by the School Governing Bodies. This study focuses on the recruitment, selection and transfer of educators in the Butterworth district of the Eastern Cape Province of South Africa. The study sought to reveal the thinking behind government insistence on giving the School Governing Bodies a responsibility to recruit, select and transfer educators knowing fully well that they do not perform this responsibility. A qualitative approach was used to explore and challenge this phenomenon. This approach is concerned with understanding social phenomenon from the participant’s perspective. In depth semi – structured interviews with open ended questions were used to bring the researcher more closer to a more plausible perspective of this phenomenon. Moreover, they were used because they are the most appropriate method to capture the data. The findings revealed that School Governing Bodies are faced with challenges such as: high level of illiteracy, manipulation of School Governing Bodies by school management, unions and candidates, the issue of regionalism and kickbacks, capacity building and empowerment and role played by the Departmental Officials. By conducting this study, we hope that the findings might contribute in identifying the disjuncture between the policy and the practice in issues pertaining to educator recruitment, selection and transfers. , Thesis (MMED) -- Faculty of Educational Sciences, 2011
- Full Text:
- Date Issued: 2011
A research tool for analysing and monitoring the Extent to which Environmental issues are integrated into teachers’ lessons
- Authors: Nsubuga, Yvonne
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/386447 , vital:68142 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122246"
- Description: South Africa enjoys strong policy support for the integration of environmental issues into school curricula. However, much doubt exists over the extent to which this has been converted into appropriate classroom practice at the majority of under-resourced rural schools in the country. This article reports on a study which piloted a research tool which can be used to analyse teachers’ lessons, with the aim of gaining insight into the extent to which they integrate natural resource management issues. The research tool was based on Bernstein’s concept of classification and consisted of five indicators of natural resource management integration into Life Sciences lessons. The study contributes to the design of research tools that can be used to analyse and monitor the integration of environmental issues into teachers’ lessons. It also provides some insight into the environmental content of a sample of Grade 10 Life Sciences lessons at four rural underresourced schools in the Eastern Cape.
- Full Text:
- Date Issued: 2011
- Authors: Nsubuga, Yvonne
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/386447 , vital:68142 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122246"
- Description: South Africa enjoys strong policy support for the integration of environmental issues into school curricula. However, much doubt exists over the extent to which this has been converted into appropriate classroom practice at the majority of under-resourced rural schools in the country. This article reports on a study which piloted a research tool which can be used to analyse teachers’ lessons, with the aim of gaining insight into the extent to which they integrate natural resource management issues. The research tool was based on Bernstein’s concept of classification and consisted of five indicators of natural resource management integration into Life Sciences lessons. The study contributes to the design of research tools that can be used to analyse and monitor the integration of environmental issues into teachers’ lessons. It also provides some insight into the environmental content of a sample of Grade 10 Life Sciences lessons at four rural underresourced schools in the Eastern Cape.
- Full Text:
- Date Issued: 2011
A Search for Conjunctions at a Time of Direction-setting Review and Synthesis
- Authors: O'Donoghue, Rob B
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387134 , vital:68209 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122240"
- Description: This journal reflects a diversity of environment and sustainability education research and viewpoints alongside two synthesis papers. Read as a whole and within a widely held ideal that diversity reflects resilience, the environment and education for sustainable development landscape in Africa might be said to be healthy and proliferating. But read against the pressure to produce tangible evidence of change on an African landscape of persistent climate variation and poverty, along with a widening gap between rich and poor, the picture remains challenging. These contrasting readings are notable at a time when we are looking towards the Association for the Development of Education in Africa (ADEA) Triennial in February, 2012, the Rio+20 Earth Summit in June 2012 and our own EEASA +30 conference in September 2012. The UN Decade of Education for Sustainable Development is characterised by a proliferation of education imperatives. These emerged as modern education in response to the issues of the day and now a modernity in deepening crisis.
- Full Text:
- Date Issued: 2011
- Authors: O'Donoghue, Rob B
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387134 , vital:68209 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122240"
- Description: This journal reflects a diversity of environment and sustainability education research and viewpoints alongside two synthesis papers. Read as a whole and within a widely held ideal that diversity reflects resilience, the environment and education for sustainable development landscape in Africa might be said to be healthy and proliferating. But read against the pressure to produce tangible evidence of change on an African landscape of persistent climate variation and poverty, along with a widening gap between rich and poor, the picture remains challenging. These contrasting readings are notable at a time when we are looking towards the Association for the Development of Education in Africa (ADEA) Triennial in February, 2012, the Rio+20 Earth Summit in June 2012 and our own EEASA +30 conference in September 2012. The UN Decade of Education for Sustainable Development is characterised by a proliferation of education imperatives. These emerged as modern education in response to the issues of the day and now a modernity in deepening crisis.
- Full Text:
- Date Issued: 2011
A study of mathematics instructional practices in foundation phase grade three classrooms in East London
- Authors: Williams, Beverley Diana
- Date: 2011
- Subjects: Mathematics--Study and teaching (Primary) http://id.loc.gov/authorities/subjects/sh85082164 , Mathematics--Study and teaching (Elementary) http://id.loc.gov/authorities/subjects/sh85082163
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/19585 , vital:43146
- Description: This study describes the instructional practices of grade three teachers in their attempt to facilitate mathematical learning. The teachers’ practices are described in relation to the requirements of the revised National Curriculum Statement. In order to demarcate the field of investigation, the researcher provides an overview of the historical background of the study and draws attention to the knowledge interest of the investigation. The problem, the research questions, the assumptions of the study, the significance of the study, the rationale and the delimitation of the study are all set out in this chapter. A list of the major terms used in the study is also given. In concluding the chapter and outline of the issues discussed in each of the five chapters is given. , Thesis (MEd) -- University of Fort Hare, 2011
- Full Text:
- Date Issued: 2011
- Authors: Williams, Beverley Diana
- Date: 2011
- Subjects: Mathematics--Study and teaching (Primary) http://id.loc.gov/authorities/subjects/sh85082164 , Mathematics--Study and teaching (Elementary) http://id.loc.gov/authorities/subjects/sh85082163
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/19585 , vital:43146
- Description: This study describes the instructional practices of grade three teachers in their attempt to facilitate mathematical learning. The teachers’ practices are described in relation to the requirements of the revised National Curriculum Statement. In order to demarcate the field of investigation, the researcher provides an overview of the historical background of the study and draws attention to the knowledge interest of the investigation. The problem, the research questions, the assumptions of the study, the significance of the study, the rationale and the delimitation of the study are all set out in this chapter. A list of the major terms used in the study is also given. In concluding the chapter and outline of the issues discussed in each of the five chapters is given. , Thesis (MEd) -- University of Fort Hare, 2011
- Full Text:
- Date Issued: 2011
A study of rural self-help groups in the context of government-assisted community development: the case of Peddie, Eastern Cape, South Africa.
- Pakade-Yokwana, Nozuko zandiswa Gloria
- Authors: Pakade-Yokwana, Nozuko zandiswa Gloria
- Date: 2011
- Subjects: Community development http://id.loc.gov/authorities/subjects/sh85029215 , Rural development http://id.loc.gov/authorities/subjects/sh85115899
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/19616 , vital:43152
- Description: This study was conducted against the backdrop of growing scholarly interest in the epistemic divide between formal, institutionalised knowledge, which guide government interventions in rural community development, and local knowledge, upon which rural communities construct their social existence. The study sought to understand why, despite their resilience and cultural embeddedness in South Africa's rural communities, indigenous self-help groups (SHGs) - as a particular form of indigenous rationality - remained on the periphery of contemporary community development interventions. The study was conducted in the communities of Dabhana, Feni and Mgwanlana in Peddie (Ngqushwa Local Municipality), Eastern Cape. Three SHG variants were eselected: a funeral group (Masingcwabane), an HIV and AIDS support groups, and a financial mutual (mgalelo) – all in the context of government-assisted community development. Empirical data was collected using a mini-survey, focus group discussion, in-depth interviews and key informant interviews. The findings revealed that SHGs were a collective model of indigenous knowledge and social interaction, driven by the belief that through 'sharing', 'reciprocity' and 'collectivism', what would ordinarily be a heavy burden for individuals became 'lighter'. Furthermore, while the institutional framework for community development mandated collaboration between government and SHGs, this framework created a stiff, bureaucratic canvass that alienated SHGs and stifled their operations. The study also found that partnership between the government and SHGs was characterised by fear and distrust on the part of government, and reluctance on the part of SHGs. Government's distrust was premised on the "informality" and "traditionality" of SHGs, and the fear that any investment in SHGs would go to waste. On the other hand, SHGs' reluctance to make themselves amenable to partnership with government seemed like a reaction to a "faulty, culturally insensitive" institutional framework which "delegitimised" grassroots development impulses. The study concluded that there existed in the rural community development arena an epistemic, ideational and practical chasm between government-driven development praxis and age-old indigenous initiatives, and that while the weaknesses of each knowledge domain were accentuated through this divide, development would continue to elude the grassroots communities unless the two knowledge domains interacted with, and leveraged, each other. , Thesis (PhD) (Sociology) -- University of Fort Hare, 2018
- Full Text:
- Date Issued: 2011
- Authors: Pakade-Yokwana, Nozuko zandiswa Gloria
- Date: 2011
- Subjects: Community development http://id.loc.gov/authorities/subjects/sh85029215 , Rural development http://id.loc.gov/authorities/subjects/sh85115899
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/19616 , vital:43152
- Description: This study was conducted against the backdrop of growing scholarly interest in the epistemic divide between formal, institutionalised knowledge, which guide government interventions in rural community development, and local knowledge, upon which rural communities construct their social existence. The study sought to understand why, despite their resilience and cultural embeddedness in South Africa's rural communities, indigenous self-help groups (SHGs) - as a particular form of indigenous rationality - remained on the periphery of contemporary community development interventions. The study was conducted in the communities of Dabhana, Feni and Mgwanlana in Peddie (Ngqushwa Local Municipality), Eastern Cape. Three SHG variants were eselected: a funeral group (Masingcwabane), an HIV and AIDS support groups, and a financial mutual (mgalelo) – all in the context of government-assisted community development. Empirical data was collected using a mini-survey, focus group discussion, in-depth interviews and key informant interviews. The findings revealed that SHGs were a collective model of indigenous knowledge and social interaction, driven by the belief that through 'sharing', 'reciprocity' and 'collectivism', what would ordinarily be a heavy burden for individuals became 'lighter'. Furthermore, while the institutional framework for community development mandated collaboration between government and SHGs, this framework created a stiff, bureaucratic canvass that alienated SHGs and stifled their operations. The study also found that partnership between the government and SHGs was characterised by fear and distrust on the part of government, and reluctance on the part of SHGs. Government's distrust was premised on the "informality" and "traditionality" of SHGs, and the fear that any investment in SHGs would go to waste. On the other hand, SHGs' reluctance to make themselves amenable to partnership with government seemed like a reaction to a "faulty, culturally insensitive" institutional framework which "delegitimised" grassroots development impulses. The study concluded that there existed in the rural community development arena an epistemic, ideational and practical chasm between government-driven development praxis and age-old indigenous initiatives, and that while the weaknesses of each knowledge domain were accentuated through this divide, development would continue to elude the grassroots communities unless the two knowledge domains interacted with, and leveraged, each other. , Thesis (PhD) (Sociology) -- University of Fort Hare, 2018
- Full Text:
- Date Issued: 2011
A white man in exile
- Authors: Krueger, Anton
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229459 , vital:49677 , xlink:href="https://doi.org/10.1080/10137548.2011.636974"
- Description: This article explores intersections between understandings of masculinity and nationalism. Etymologically, ‘patriotism’ refers to a love for a fatherland and a patriarchal order; it includes notions of loyalty, honour and a range of qualities often associated with conceptions of masculinity. But if gender remains fixed to these normative constructions, what happens to one’s sense of masculine identity when the national state changes? My interest lies in exploring how white South African men have been repositioned in terms of a shift in their gendered identification, with a reflection on the possibly tragic consequences of maintaining an overly rigid gender role identification. As long as masculinity is embedded within nationalism, it will be caught up within a defensive reactive mode which can turn self-destructive. In order to explore these ideas the article employs as its central metaphor the character of Dawid Olivier, who is the protagonist of Athol Fugard’s Sorrows and Rejoicings (2002).
- Full Text:
- Date Issued: 2011
- Authors: Krueger, Anton
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229459 , vital:49677 , xlink:href="https://doi.org/10.1080/10137548.2011.636974"
- Description: This article explores intersections between understandings of masculinity and nationalism. Etymologically, ‘patriotism’ refers to a love for a fatherland and a patriarchal order; it includes notions of loyalty, honour and a range of qualities often associated with conceptions of masculinity. But if gender remains fixed to these normative constructions, what happens to one’s sense of masculine identity when the national state changes? My interest lies in exploring how white South African men have been repositioned in terms of a shift in their gendered identification, with a reflection on the possibly tragic consequences of maintaining an overly rigid gender role identification. As long as masculinity is embedded within nationalism, it will be caught up within a defensive reactive mode which can turn self-destructive. In order to explore these ideas the article employs as its central metaphor the character of Dawid Olivier, who is the protagonist of Athol Fugard’s Sorrows and Rejoicings (2002).
- Full Text:
- Date Issued: 2011
Adoption, use and perception of Australian acacias around the world
- Kull, Christian A, Shackleton, Charlie M, Cunningham, Peter J, Ducatillon, Catherine, Dufour-Dror, Jean-Mark, Esler, Karen J, Friday, James B, Gouveia, António C, Griffin, A R, Marchante, Elizabete, Midgley, Steven J, Pauchard, Aníbal, Rangan, Haripriya, Richardson, David M, Rinaudo, Tony, Tassin, Jacques, Urgenson, Lauren S, van Maltitz, Graham P, Zenni, Rafael D, Zylstra, Matthew J
- Authors: Kull, Christian A , Shackleton, Charlie M , Cunningham, Peter J , Ducatillon, Catherine , Dufour-Dror, Jean-Mark , Esler, Karen J , Friday, James B , Gouveia, António C , Griffin, A R , Marchante, Elizabete , Midgley, Steven J , Pauchard, Aníbal , Rangan, Haripriya , Richardson, David M , Rinaudo, Tony , Tassin, Jacques , Urgenson, Lauren S , van Maltitz, Graham P , Zenni, Rafael D , Zylstra, Matthew J
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182149 , vital:43804 , xlink:href="https://doi.org/10.1111/j.1472-4642.2011.00783.x"
- Description: To examine the different uses and perceptions of introduced Australian acacias (wattles; Acacia subgenus Phyllodineae) by rural households and communities. Eighteen landscape-scale case studies around the world, in Vietnam, India, Réunion, Madagascar, South Africa, Congo, Niger, Ethiopia, Israel, France, Portugal, Brazil, Chile, Dominican Republic and Hawai‘i. Qualitative comparison of case studies, based on questionnaire sent to network of acacia researchers. Information based on individual knowledge of local experts, published and unpublished sources. We propose a conceptual model to explain current uses and perceptions of introduced acacias. It highlights historically and geographically contingent processes, including economic development, environmental discourses, political context, and local or regional needs. Four main groupings of case studies were united by similar patterns: (1) poor communities benefiting from targeted agroforestry projects; (2) places where residents, generally poor, take advantage of a valuable resource already present in their landscape via plantation and/or invasion; (3) regions of small and mid-scale tree farmers participating in the forestry industry; and (4) a number of high-income communities dealing with the legacies of former or niche use of introduced acacia in a context of increased concern over biodiversity and ecosystem services. Economic conditions play a key role shaping acacia use. Poorer communities rely strongly on acacias (often in, or escaped from, formal plantations) for household needs and, sometimes, for income. Middle-income regions more typically host private farm investments in acacia woodlots for commercialization. Efforts at control of invasive acacias must take care to not adversely impact poor dependent communities.
- Full Text:
- Date Issued: 2011
- Authors: Kull, Christian A , Shackleton, Charlie M , Cunningham, Peter J , Ducatillon, Catherine , Dufour-Dror, Jean-Mark , Esler, Karen J , Friday, James B , Gouveia, António C , Griffin, A R , Marchante, Elizabete , Midgley, Steven J , Pauchard, Aníbal , Rangan, Haripriya , Richardson, David M , Rinaudo, Tony , Tassin, Jacques , Urgenson, Lauren S , van Maltitz, Graham P , Zenni, Rafael D , Zylstra, Matthew J
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/182149 , vital:43804 , xlink:href="https://doi.org/10.1111/j.1472-4642.2011.00783.x"
- Description: To examine the different uses and perceptions of introduced Australian acacias (wattles; Acacia subgenus Phyllodineae) by rural households and communities. Eighteen landscape-scale case studies around the world, in Vietnam, India, Réunion, Madagascar, South Africa, Congo, Niger, Ethiopia, Israel, France, Portugal, Brazil, Chile, Dominican Republic and Hawai‘i. Qualitative comparison of case studies, based on questionnaire sent to network of acacia researchers. Information based on individual knowledge of local experts, published and unpublished sources. We propose a conceptual model to explain current uses and perceptions of introduced acacias. It highlights historically and geographically contingent processes, including economic development, environmental discourses, political context, and local or regional needs. Four main groupings of case studies were united by similar patterns: (1) poor communities benefiting from targeted agroforestry projects; (2) places where residents, generally poor, take advantage of a valuable resource already present in their landscape via plantation and/or invasion; (3) regions of small and mid-scale tree farmers participating in the forestry industry; and (4) a number of high-income communities dealing with the legacies of former or niche use of introduced acacia in a context of increased concern over biodiversity and ecosystem services. Economic conditions play a key role shaping acacia use. Poorer communities rely strongly on acacias (often in, or escaped from, formal plantations) for household needs and, sometimes, for income. Middle-income regions more typically host private farm investments in acacia woodlots for commercialization. Efforts at control of invasive acacias must take care to not adversely impact poor dependent communities.
- Full Text:
- Date Issued: 2011
An investigation into the demand for money in South Africa during the period (1990-2009)
- Simawu, Moreblessing https://orcid.org/0000-0003-4413-4660
- Authors: Simawu, Moreblessing https://orcid.org/0000-0003-4413-4660
- Date: 2011
- Subjects: Demand for money -- South Africa , Monetary policy -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24421 , vital:62789
- Description: A stable money demand function plays a vital role in the analysis of macroeconomics, especially in the planning and implementation of monetary policy. With the use of Johansen cointegration and error correction model estimates, this study examines the existence of a stable long-run relationship between real money demand (RM2 and RM3) and its explanatory variables, in South Africa, for the period 1990-2009. The explanatory variables used in this study are selected on the basis of different monetary theories and empirical works, including the Keynesian, Classical and Friedman’s modern quantity theory of money. Based on these theories, the explanatory variables used in this thesis are real income, an interest rate, the inflation rate ,the exchange rate and foreign interest rate. The signs of the coefficients of the variables are as expected from economic theory. The coefficients of real income, the exchange rate and foreign interest rate are positive, while the coefficients of the interest rate and inflation rate are negative. This study augments the cointegration and vector autoregression (VAR) analysis with impulse response and variance decomposition analyses to provide robust long run effects and short run dynamic effects on the real money demand. In addition a foreign interest rate to capture the impact of capital mobility on money demand in South Africa was used. Results from the Johansen test suggest that real money demand (RM2 and RM3) and its all explanatory variables are cointegrated. Hence, there is a long-run equilibrium relationship between the real quantity of money demanded and five broadly defined macroeconomic components namely, real income, an interest rate, the inflation rate, foreign interest rate and the exchange rate in South Africa. Overall, the study finds that the coefficients of the equilibrium error terms are negative, as expected, and significantly different from zero, implying that 0.16 and 0.1 of the discrepancy between money demand and its explanatory variables is eliminated in the following quarter. Application of CUSUM and CUSUMSQ stability test showed that real money demand (M2 and M3) is stable in South Africa. The impulse response analysis provided evidence that the real M3 money, national income, rate of inflation and the foreign interest rate have a significant impact on the real M3 money demand in the short run. However, remaining variables (the real exchange rate and prime overdraft rate), have only a transitory effect on the real M3 money demand. There was further evidence that real exchange rate, the rate of inflation and the foreign interest rate, have a significant impact on the real M2 money demand in the short run. However, remaining variables (the national income and prime overdraft rate), have only a transitory effect on the real M2 money demand. Results from the variance decompositions of the real money demand are basically similar to those from the impulse response analysis and reveal that the fundamentals explain some, but not all, of the variations of the real money demand. The results showed that the national income explains the largest component of the variation in the real M2 money demand followed by the exchange rate and foreign interest rate. Shocks to the other variables continued to explain an insignificant proportion of the variation in the real M2 money demand. The national income also explains the largest component of the variation in the real M3 money demand followed by the foreign interest rate and exchange rate. Shocks to the other variables continued to explain a less significant proportion of the variation in the real M3 money demand.The study finds that both real M2 and M3 are stable which makes monetary targeting a viable policy option for the SARB. , Thesis (MCom) -- Faculty of Management and Commerce, 2011
- Full Text:
- Date Issued: 2011
- Authors: Simawu, Moreblessing https://orcid.org/0000-0003-4413-4660
- Date: 2011
- Subjects: Demand for money -- South Africa , Monetary policy -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24421 , vital:62789
- Description: A stable money demand function plays a vital role in the analysis of macroeconomics, especially in the planning and implementation of monetary policy. With the use of Johansen cointegration and error correction model estimates, this study examines the existence of a stable long-run relationship between real money demand (RM2 and RM3) and its explanatory variables, in South Africa, for the period 1990-2009. The explanatory variables used in this study are selected on the basis of different monetary theories and empirical works, including the Keynesian, Classical and Friedman’s modern quantity theory of money. Based on these theories, the explanatory variables used in this thesis are real income, an interest rate, the inflation rate ,the exchange rate and foreign interest rate. The signs of the coefficients of the variables are as expected from economic theory. The coefficients of real income, the exchange rate and foreign interest rate are positive, while the coefficients of the interest rate and inflation rate are negative. This study augments the cointegration and vector autoregression (VAR) analysis with impulse response and variance decomposition analyses to provide robust long run effects and short run dynamic effects on the real money demand. In addition a foreign interest rate to capture the impact of capital mobility on money demand in South Africa was used. Results from the Johansen test suggest that real money demand (RM2 and RM3) and its all explanatory variables are cointegrated. Hence, there is a long-run equilibrium relationship between the real quantity of money demanded and five broadly defined macroeconomic components namely, real income, an interest rate, the inflation rate, foreign interest rate and the exchange rate in South Africa. Overall, the study finds that the coefficients of the equilibrium error terms are negative, as expected, and significantly different from zero, implying that 0.16 and 0.1 of the discrepancy between money demand and its explanatory variables is eliminated in the following quarter. Application of CUSUM and CUSUMSQ stability test showed that real money demand (M2 and M3) is stable in South Africa. The impulse response analysis provided evidence that the real M3 money, national income, rate of inflation and the foreign interest rate have a significant impact on the real M3 money demand in the short run. However, remaining variables (the real exchange rate and prime overdraft rate), have only a transitory effect on the real M3 money demand. There was further evidence that real exchange rate, the rate of inflation and the foreign interest rate, have a significant impact on the real M2 money demand in the short run. However, remaining variables (the national income and prime overdraft rate), have only a transitory effect on the real M2 money demand. Results from the variance decompositions of the real money demand are basically similar to those from the impulse response analysis and reveal that the fundamentals explain some, but not all, of the variations of the real money demand. The results showed that the national income explains the largest component of the variation in the real M2 money demand followed by the exchange rate and foreign interest rate. Shocks to the other variables continued to explain an insignificant proportion of the variation in the real M2 money demand. The national income also explains the largest component of the variation in the real M3 money demand followed by the foreign interest rate and exchange rate. Shocks to the other variables continued to explain a less significant proportion of the variation in the real M3 money demand.The study finds that both real M2 and M3 are stable which makes monetary targeting a viable policy option for the SARB. , Thesis (MCom) -- Faculty of Management and Commerce, 2011
- Full Text:
- Date Issued: 2011
Being moved by a way the world is not
- Authors: Jones, Ward E
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275631 , vital:55064 , xlink:href="https://doi.org/10.1007/s11229-009-9522-z"
- Description: At the end of Lecture 3 of The Empirical Stance, Bas van Fraassen suggests that we see the change of view involved in scientific revolutions as being, at least in part, emotional. In this paper, I explore one plausible way of cashing out this suggestion. Someone’s emotional approval of a description of the world, I argue, thereby shows that she takes herself to have reason to take that description seriously. This is true even if she is convinced—as a scientific community is when it considers alternative theories—that this description is false, that it is not the way the world is.
- Full Text:
- Date Issued: 2011
- Authors: Jones, Ward E
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275631 , vital:55064 , xlink:href="https://doi.org/10.1007/s11229-009-9522-z"
- Description: At the end of Lecture 3 of The Empirical Stance, Bas van Fraassen suggests that we see the change of view involved in scientific revolutions as being, at least in part, emotional. In this paper, I explore one plausible way of cashing out this suggestion. Someone’s emotional approval of a description of the world, I argue, thereby shows that she takes herself to have reason to take that description seriously. This is true even if she is convinced—as a scientific community is when it considers alternative theories—that this description is false, that it is not the way the world is.
- Full Text:
- Date Issued: 2011
Challenges facing school management teams in the general education and training band schools
- Authors: Bafundi,Zealous Mapisa
- Date: 2011
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3538 , vital:43625
- Description: Abstract text The study investigated the factors that lead to the high failure rate of grade 12 learners of the two high schools in the Ngqeleni area of Libode Mega District of the Eastern Cape, South Africa. The study was qualitative in nature; therefore interviews were used as the method of collecting data. Seven SMT members, four parents and four learners were, randomly selected from the two schools in the Ngqeleni area of Libode Mega District. The researcher randomly selected the participants then interviewed them. The researcher used a video recoder as an instrument to record the responses from the participants. To analyse data, the researcher transcribed the interview responses and interpreted them. The main findings of the study showed that the high failure rate was caused by the following factors: over-croweded classes, shortage of teaching and learnin~ materials, lack of parental involvement, teachers' low morale, poor learner discipline, teachers experiencing problems in implementing government policies, work-load and as such teaching becoming stressful. The researcher in his study therefore recommends that the Department of Education plans more workshops for schools to capacitate them. There should be provision for more classrooms and incentives for teachers. Key Words: factors, high failure rate, grade 12, Ngqeleni area, Department of Education. , Thesis (MMED) -- Faculty of Educational Sciences, 2011
- Full Text:
- Date Issued: 2011
- Authors: Bafundi,Zealous Mapisa
- Date: 2011
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3538 , vital:43625
- Description: Abstract text The study investigated the factors that lead to the high failure rate of grade 12 learners of the two high schools in the Ngqeleni area of Libode Mega District of the Eastern Cape, South Africa. The study was qualitative in nature; therefore interviews were used as the method of collecting data. Seven SMT members, four parents and four learners were, randomly selected from the two schools in the Ngqeleni area of Libode Mega District. The researcher randomly selected the participants then interviewed them. The researcher used a video recoder as an instrument to record the responses from the participants. To analyse data, the researcher transcribed the interview responses and interpreted them. The main findings of the study showed that the high failure rate was caused by the following factors: over-croweded classes, shortage of teaching and learnin~ materials, lack of parental involvement, teachers' low morale, poor learner discipline, teachers experiencing problems in implementing government policies, work-load and as such teaching becoming stressful. The researcher in his study therefore recommends that the Department of Education plans more workshops for schools to capacitate them. There should be provision for more classrooms and incentives for teachers. Key Words: factors, high failure rate, grade 12, Ngqeleni area, Department of Education. , Thesis (MMED) -- Faculty of Educational Sciences, 2011
- Full Text:
- Date Issued: 2011
Comparative behavior of conjugates of tantalum phthalocyanines with gold nanoparticles or single walled carbon nanotubes towards bisphenol A electrocatalysis
- Chauke, Vongani P, Antunes, Edith M, Nyokong, Tebello
- Authors: Chauke, Vongani P , Antunes, Edith M , Nyokong, Tebello
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/247152 , vital:51551 , xlink:href="https://doi.org/10.1016/j.jelechem.2011.06.019"
- Description: The characterization of tantalum phthalocyanine conjugates with gold nanoparticles and single wall carbon nanotubes as well as their electrocatalytic oxidation of bisphenol A is hereby presented. The formation of the conjugates was confirmed by X-ray diffraction and transmission electron microscope techniques. Single walled carbon nanotube conjugates of TaPc complexes showed the best catalysis as well as less passivation for bisphenol A detection and significant recovery of ∼98% compared to gold nanoparticle conjugates.
- Full Text:
- Date Issued: 2011
- Authors: Chauke, Vongani P , Antunes, Edith M , Nyokong, Tebello
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/247152 , vital:51551 , xlink:href="https://doi.org/10.1016/j.jelechem.2011.06.019"
- Description: The characterization of tantalum phthalocyanine conjugates with gold nanoparticles and single wall carbon nanotubes as well as their electrocatalytic oxidation of bisphenol A is hereby presented. The formation of the conjugates was confirmed by X-ray diffraction and transmission electron microscope techniques. Single walled carbon nanotube conjugates of TaPc complexes showed the best catalysis as well as less passivation for bisphenol A detection and significant recovery of ∼98% compared to gold nanoparticle conjugates.
- Full Text:
- Date Issued: 2011
Comparison between Endothelin, Nitric Oxide and their Association to Blood Pressure and Body Composition in HIV Patients, in Mthatha
- Authors: Zono, Sinethemba
- Date: 2011
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3550 , vital:43627
- Description: The motivation for this study is that Health Resource Centres of the Eastern Cape ought to provide access to high quality, relevant and appropriate information that is evidence-based and responsive to the needs of health professionals thereby assisting health professionals accomplish their tasks. In order to provide access to quality information, the Health Resource Centres are expected to provide information services within an acceptable framework of service standards. This study seeks to explore the implementation of standards in the Health Resource Centres of the Eastern Cape. The study was carried out in two phases namely a literature review and a survey. The study used the quantitative method of collecting data by means of a cross-sectional survey. A self administered questionnaire was used to collect data. The questionnaire was piloted in the Queenstown Health Resource Centre, after which appropriate changes were made before the commencement of data collection. The study was conducted in the three other Health Resource Centres of the Eastern Cape, namely Umtata Health Resource Centre, East London Health Resource Centre and Port Elizabeth Health Resource Centre. Health Resource Centre managers completed the questionnaires. The overall findings of this study show that the three Health Resource Centres uphold service standards. The results show that the Health Resource Centres were compliant with the service standards relating to both services and management areas. The Health Resource Centres were more compliant with standards relating to service areas than they were to standards relating to management areas. The results of the study furthermore demonstrate that the Umtata Health Resource Centre was most compliant regarding service areas (86,20%) compared to the East London Health Resource Centre (82,75%) and the Port Elizabeth Health Resource Centre (72,41%). In regard to management areas, the results show that the Umtata Health Resource Centre and East London Health Resource were more compliant than the Port Elizabeth Health Resource Centre. However certain aspects of their service such as availability of space, health and safety, staff performance and development, quality leadership and design and financial management need further attention. The study suggests that further research is required to objectively verify implementation of standards, to solicit health professionals’ opinions and experiences about the services provided by these Health Resource Centres and to find out if there is any connection between the quality of services provided and the quality of patient care. , Thesis (MSc) -- Faculty of Health Sciences, 2015
- Full Text:
- Date Issued: 2011
- Authors: Zono, Sinethemba
- Date: 2011
- Language: English
- Type: Masters theses , text
- Identifier: http://hdl.handle.net/11260/3550 , vital:43627
- Description: The motivation for this study is that Health Resource Centres of the Eastern Cape ought to provide access to high quality, relevant and appropriate information that is evidence-based and responsive to the needs of health professionals thereby assisting health professionals accomplish their tasks. In order to provide access to quality information, the Health Resource Centres are expected to provide information services within an acceptable framework of service standards. This study seeks to explore the implementation of standards in the Health Resource Centres of the Eastern Cape. The study was carried out in two phases namely a literature review and a survey. The study used the quantitative method of collecting data by means of a cross-sectional survey. A self administered questionnaire was used to collect data. The questionnaire was piloted in the Queenstown Health Resource Centre, after which appropriate changes were made before the commencement of data collection. The study was conducted in the three other Health Resource Centres of the Eastern Cape, namely Umtata Health Resource Centre, East London Health Resource Centre and Port Elizabeth Health Resource Centre. Health Resource Centre managers completed the questionnaires. The overall findings of this study show that the three Health Resource Centres uphold service standards. The results show that the Health Resource Centres were compliant with the service standards relating to both services and management areas. The Health Resource Centres were more compliant with standards relating to service areas than they were to standards relating to management areas. The results of the study furthermore demonstrate that the Umtata Health Resource Centre was most compliant regarding service areas (86,20%) compared to the East London Health Resource Centre (82,75%) and the Port Elizabeth Health Resource Centre (72,41%). In regard to management areas, the results show that the Umtata Health Resource Centre and East London Health Resource were more compliant than the Port Elizabeth Health Resource Centre. However certain aspects of their service such as availability of space, health and safety, staff performance and development, quality leadership and design and financial management need further attention. The study suggests that further research is required to objectively verify implementation of standards, to solicit health professionals’ opinions and experiences about the services provided by these Health Resource Centres and to find out if there is any connection between the quality of services provided and the quality of patient care. , Thesis (MSc) -- Faculty of Health Sciences, 2015
- Full Text:
- Date Issued: 2011
Conjugates of low-symmetry Ge, Sn and Ti carboxy phthalocyanines with glutathione caped gold nanoparticles
- Masilela, Nkosiphile, Nyokong, Tebello
- Authors: Masilela, Nkosiphile , Nyokong, Tebello
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/247003 , vital:51536 , xlink:href="https://doi.org/10.1016/j.jphotochem.2011.08.009"
- Description: This work reports on conjugation of low symmetry Ge (GeMCPc), Ti (TiMCPc) and Sn (SnMCPc) carboxy phthalocyanines with glutathione capped gold nanoparticles (GSH-AuNPs). The photophysical behaviour of the novel phthalocyanines–GSH-AuNPs conjugate was investigated and compared to the monocarboxy Pcs and to the mixture of Pc with GSH-AuNPs without a chemical bond. Blue shifting of Q band of the phthalocyanines was observed on linking to GSH-AuNPs. An improvement in triplet lifetimes was obtained for all the MPcs–GSH-AuNPs-linked conjugates compared to the MPcs alone. The highest triplet quantum yield of 0.75 and the longest triplet lifetime of 130 μs were obtained for the GeMCPc–GSH-AuNPs-linked conjugate. Fluorescence quantum yields and lifetimes were low for the conjugates due to quenching by the nanoparticles.
- Full Text:
- Date Issued: 2011
- Authors: Masilela, Nkosiphile , Nyokong, Tebello
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/247003 , vital:51536 , xlink:href="https://doi.org/10.1016/j.jphotochem.2011.08.009"
- Description: This work reports on conjugation of low symmetry Ge (GeMCPc), Ti (TiMCPc) and Sn (SnMCPc) carboxy phthalocyanines with glutathione capped gold nanoparticles (GSH-AuNPs). The photophysical behaviour of the novel phthalocyanines–GSH-AuNPs conjugate was investigated and compared to the monocarboxy Pcs and to the mixture of Pc with GSH-AuNPs without a chemical bond. Blue shifting of Q band of the phthalocyanines was observed on linking to GSH-AuNPs. An improvement in triplet lifetimes was obtained for all the MPcs–GSH-AuNPs-linked conjugates compared to the MPcs alone. The highest triplet quantum yield of 0.75 and the longest triplet lifetime of 130 μs were obtained for the GeMCPc–GSH-AuNPs-linked conjugate. Fluorescence quantum yields and lifetimes were low for the conjugates due to quenching by the nanoparticles.
- Full Text:
- Date Issued: 2011
Cyclic voltammetry and spectroelectrochemistry of a novel manganese phthalocyanine substituted with hexynyl groups
- Quinton, Damien, Antunes, Edith M, Griveau, Sophie, Nyokong, Tebello, Bedioui, Fethi
- Authors: Quinton, Damien , Antunes, Edith M , Griveau, Sophie , Nyokong, Tebello , Bedioui, Fethi
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/248450 , vital:51687 , xlink:href="https://doi.org/10.1016/j.inoche.2010.11.029"
- Description: We report here on the synthesis of a new manganese phthalocyanine complex, namely Mn tetrakis(5-hexyn-oxy) phthalocyanine (3), specifically designed to possess an alkyne moiety for its potential use in controlled immobilization on electrodes via the so called “click” chemistry reaction. The electrochemical activity of complex 3 was investigated by cyclic voltammetry and the nature of the observed redox couples was elucidated by spectroelectrochemistry. This work has also shown that the reduction of Mn(III)Pc complex to Mn(II)Pc is accompanied by the formation of MnPc μ-oxo species. Further reduction results in the formation of Mn(II)Pc(− 3) rather than Mn(I)Pc(− 2).
- Full Text:
- Date Issued: 2011
- Authors: Quinton, Damien , Antunes, Edith M , Griveau, Sophie , Nyokong, Tebello , Bedioui, Fethi
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/248450 , vital:51687 , xlink:href="https://doi.org/10.1016/j.inoche.2010.11.029"
- Description: We report here on the synthesis of a new manganese phthalocyanine complex, namely Mn tetrakis(5-hexyn-oxy) phthalocyanine (3), specifically designed to possess an alkyne moiety for its potential use in controlled immobilization on electrodes via the so called “click” chemistry reaction. The electrochemical activity of complex 3 was investigated by cyclic voltammetry and the nature of the observed redox couples was elucidated by spectroelectrochemistry. This work has also shown that the reduction of Mn(III)Pc complex to Mn(II)Pc is accompanied by the formation of MnPc μ-oxo species. Further reduction results in the formation of Mn(II)Pc(− 3) rather than Mn(I)Pc(− 2).
- Full Text:
- Date Issued: 2011
Delivering a personalised video service using IPTV
- Shibeshi, Zelalem S, Ndakunda, Shange, Terzoli, Alfredo, Bradshaw, Karen
- Authors: Shibeshi, Zelalem S , Ndakunda, Shange , Terzoli, Alfredo , Bradshaw, Karen
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/477078 , vital:78043
- Description: Video oriented services are taking the lead in terms of revenue in the current Internet environment. In order to tap this revenue, Telcos are resorting to serious measures such as moving to Next Generation Network (NGN) where they can provide QoS for services that demand this feature, such as, IPTV. IPTV is more than just what its name implies and includes various types of additional services to make the TV a better entertainment and communication environment. Various innovative IPTV services have been proposed and developed by researchers and practitioners, including personalized advertisement, personalized EPG (Electronic Program Guide), and personalized VoD (Video on Demand). In this paper we introduce a new IPTV service called, the personalized dynamic video delivery service, which sends new video alerts (like breaking news alert) to subscribed users and notifies them when the video is available. If desired, users can watch the video automatically by switching from what they are currently watching without requiring explicitly a new video setup. Users can configure their profile and also set a policy on the way they wish to be notified and the types of video they wish to be alerted to. The paper describes the issues surrounding the delivery of this service and presents the architecture and the various open source technologies that are used to develop the service.
- Full Text:
- Date Issued: 2011
- Authors: Shibeshi, Zelalem S , Ndakunda, Shange , Terzoli, Alfredo , Bradshaw, Karen
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/477078 , vital:78043
- Description: Video oriented services are taking the lead in terms of revenue in the current Internet environment. In order to tap this revenue, Telcos are resorting to serious measures such as moving to Next Generation Network (NGN) where they can provide QoS for services that demand this feature, such as, IPTV. IPTV is more than just what its name implies and includes various types of additional services to make the TV a better entertainment and communication environment. Various innovative IPTV services have been proposed and developed by researchers and practitioners, including personalized advertisement, personalized EPG (Electronic Program Guide), and personalized VoD (Video on Demand). In this paper we introduce a new IPTV service called, the personalized dynamic video delivery service, which sends new video alerts (like breaking news alert) to subscribed users and notifies them when the video is available. If desired, users can watch the video automatically by switching from what they are currently watching without requiring explicitly a new video setup. Users can configure their profile and also set a policy on the way they wish to be notified and the types of video they wish to be alerted to. The paper describes the issues surrounding the delivery of this service and presents the architecture and the various open source technologies that are used to develop the service.
- Full Text:
- Date Issued: 2011
Diabetes mellitus: Preliminary health-promotion activity based on service-learning principles at a South African national science festival
- Srinivas, Sunitha C, Wrench, Wendy M, Bradshaw, Karen L, Dukhi, Natisha
- Authors: Srinivas, Sunitha C , Wrench, Wendy M , Bradshaw, Karen L , Dukhi, Natisha
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/477592 , vital:78102
- Description: Objectives: To investigate the effects of a service-learning-based health promotion elective in influencing knowledge of diabetes mellitus (DM) and ways to prevent it. Method: A computer-based quiz, an information poster, interactive models and a take-home information leaflet on DM were developed as part of an exhibit during the 2009 National Festival of Science and Technology held in Grahamstown, South Africa. Predominantly school students visited the exhibit and took part in the quiz and other educational activities. Results: The majority of the 119 junior and 332 senior quiz participants were male students attending government schools in the Eastern Cape, South Africa. After an educational intervention, there was significant improvement in the junior quiz participants’ overall percentage knowledge scores (p-value = 0.024), while the senior quiz participants showed a markedly significant improvement in the overall percentage knowledge scores (p-value is less than 0.001). The results showed significant gender differences for both the pre- and post-intervention mean percentage scores among both groups, with better scores for female participants. Conclusion: The health-promotion elective was successful in raising awareness of DM. This approach may offer an additional tool that can be used in the continuous, concerted health promotion activities and advocacy by all healthcare professionals to address the prevention of DM.
- Full Text:
- Date Issued: 2011
- Authors: Srinivas, Sunitha C , Wrench, Wendy M , Bradshaw, Karen L , Dukhi, Natisha
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/477592 , vital:78102
- Description: Objectives: To investigate the effects of a service-learning-based health promotion elective in influencing knowledge of diabetes mellitus (DM) and ways to prevent it. Method: A computer-based quiz, an information poster, interactive models and a take-home information leaflet on DM were developed as part of an exhibit during the 2009 National Festival of Science and Technology held in Grahamstown, South Africa. Predominantly school students visited the exhibit and took part in the quiz and other educational activities. Results: The majority of the 119 junior and 332 senior quiz participants were male students attending government schools in the Eastern Cape, South Africa. After an educational intervention, there was significant improvement in the junior quiz participants’ overall percentage knowledge scores (p-value = 0.024), while the senior quiz participants showed a markedly significant improvement in the overall percentage knowledge scores (p-value is less than 0.001). The results showed significant gender differences for both the pre- and post-intervention mean percentage scores among both groups, with better scores for female participants. Conclusion: The health-promotion elective was successful in raising awareness of DM. This approach may offer an additional tool that can be used in the continuous, concerted health promotion activities and advocacy by all healthcare professionals to address the prevention of DM.
- Full Text:
- Date Issued: 2011
Do budget deficits crowd out private investment?: an analysis of the South African Economy
- Authors: Biza, Rumbidzai Aimee
- Date: 2011
- Subjects: Individual investors -- South Africa , Budget deficits -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24956 , vital:63750
- Description: This dissertation investigates whether budget deficits crowd out or crowd in private investment in South Africa, using quarterly South African data covering the period 1994 to 2009. South Africa has been experiencing unprecedented budget deficits since the 1960s and the study investigates how this has impacted on the country’s private investment demand. An empirical model linking private investment to its theoretical variables is specified and used to assess the quantitative effects of budget deficits on private investment. This study augments the co-integration and vector auto-regression (VAR) analysis with impulse response and variance decomposition analyses to provide robust long run and short run dynamic effects on private investment. The variables have been found to have a long run relationship with private investment. Results suggest that budget deficits significantly crowds out private investment. These results corroborate the theoretical predictions and are also supported by previous studies. , Thesis (MCom) -- Faculty of Management and Commerce, 2011
- Full Text:
- Date Issued: 2011
- Authors: Biza, Rumbidzai Aimee
- Date: 2011
- Subjects: Individual investors -- South Africa , Budget deficits -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24956 , vital:63750
- Description: This dissertation investigates whether budget deficits crowd out or crowd in private investment in South Africa, using quarterly South African data covering the period 1994 to 2009. South Africa has been experiencing unprecedented budget deficits since the 1960s and the study investigates how this has impacted on the country’s private investment demand. An empirical model linking private investment to its theoretical variables is specified and used to assess the quantitative effects of budget deficits on private investment. This study augments the co-integration and vector auto-regression (VAR) analysis with impulse response and variance decomposition analyses to provide robust long run and short run dynamic effects on private investment. The variables have been found to have a long run relationship with private investment. Results suggest that budget deficits significantly crowds out private investment. These results corroborate the theoretical predictions and are also supported by previous studies. , Thesis (MCom) -- Faculty of Management and Commerce, 2011
- Full Text:
- Date Issued: 2011
Drug transport mechanisms from carbopol/eudragit verapamil sustained-release tablets
- Khamanga, Sandile M, Walker, Roderick B
- Authors: Khamanga, Sandile M , Walker, Roderick B
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/184801 , vital:44273 , xlink:href="https://doi.org/10.14227/dt180311p30"
- Description: The objectives of this study were to compare dissolution profiles of a verapamil (VRP) formulation manufactured inhouse and Isoptin SR using USP Apparatus 2 and 3 and to elucidate drug release kinetics of these dosage forms. Eudragit NE 30D (ethyl acrylate–methyl methacrylate copolymer in a 2:1 ratio) aqueous dispersion was used as a granulating binder for the manufacture of VRP mini-matrix sustained-release tablets. The wet granulation process was performed to prepare free-flowing granules that were blended with Carbopol. The tablets were manufactured using a single-punch press by compression of the granules with magnesium stearate as a lubricant. Drug release was determined in phosphate buffer solution using USP Apparatus 2 and 3. Dissolution data were fitted to zero- and first-order models; in addition, the kinetic data were determined by evaluation of Higuchi release kinetics. The mechanism of drug release was established using the Korsmeyer–Peppas model. In general, all tablets showed high mechanical resistance with less than 1% friability. There was no significant difference between the dissolution profiles of the formulation manufactured in-house and the commercially available product. The release mechanism of the formulated and marketed products was controlled by anomalous non-Fickian diffusion. VRP release was prolonged for 12 h indicating the usefulness of the formulation as a twice-daily dosage form. The mechanism of drug release for the dosage forms was unaffected by the choice of apparatus.
- Full Text:
- Date Issued: 2011
- Authors: Khamanga, Sandile M , Walker, Roderick B
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/184801 , vital:44273 , xlink:href="https://doi.org/10.14227/dt180311p30"
- Description: The objectives of this study were to compare dissolution profiles of a verapamil (VRP) formulation manufactured inhouse and Isoptin SR using USP Apparatus 2 and 3 and to elucidate drug release kinetics of these dosage forms. Eudragit NE 30D (ethyl acrylate–methyl methacrylate copolymer in a 2:1 ratio) aqueous dispersion was used as a granulating binder for the manufacture of VRP mini-matrix sustained-release tablets. The wet granulation process was performed to prepare free-flowing granules that were blended with Carbopol. The tablets were manufactured using a single-punch press by compression of the granules with magnesium stearate as a lubricant. Drug release was determined in phosphate buffer solution using USP Apparatus 2 and 3. Dissolution data were fitted to zero- and first-order models; in addition, the kinetic data were determined by evaluation of Higuchi release kinetics. The mechanism of drug release was established using the Korsmeyer–Peppas model. In general, all tablets showed high mechanical resistance with less than 1% friability. There was no significant difference between the dissolution profiles of the formulation manufactured in-house and the commercially available product. The release mechanism of the formulated and marketed products was controlled by anomalous non-Fickian diffusion. VRP release was prolonged for 12 h indicating the usefulness of the formulation as a twice-daily dosage form. The mechanism of drug release for the dosage forms was unaffected by the choice of apparatus.
- Full Text:
- Date Issued: 2011
Electrochemical behavior of phthalocyanines containing high oxidation state central metals
- Chauke, Vongani, Arslanoglu, Yasin, Nyokong, Tebello
- Authors: Chauke, Vongani , Arslanoglu, Yasin , Nyokong, Tebello
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/247111 , vital:51547 , xlink:href="https://doi.org/10.1016/j.poly.2011.05.028"
- Description: The syntheses of 2,(3)-(peripheral) and 1,(4)-(non-peripheral) (2-mercaptopyridine)phthalocyanine complexes of titanium(IV) oxide (5a and 6a, respectively), vanadium(IV) oxide (7a and 8a, respectively) and tantalum(V) hydroxide (9a, peripheral only) and their electrochemical characterization are presented in this report. Their electrochemistry is compared to that of thiophenyl and thiobenzyl substituted derivatives. The non-peripherally substituted complexes are more difficult to reduce than peripherally substituted derivatives. In addition, the mercaptopyridine substituted derivatives are more difficult to reduce compared to benzylmercapto and phenylmercapto derivatives, and aryl easier reduce than alkyl substitution. Spectroelectrochemistry of the complexes confirmed metal and ring redox processes for TaPc and TiPc derivatives and ring based processes only for VPc complexes.
- Full Text:
- Date Issued: 2011
- Authors: Chauke, Vongani , Arslanoglu, Yasin , Nyokong, Tebello
- Date: 2011
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/247111 , vital:51547 , xlink:href="https://doi.org/10.1016/j.poly.2011.05.028"
- Description: The syntheses of 2,(3)-(peripheral) and 1,(4)-(non-peripheral) (2-mercaptopyridine)phthalocyanine complexes of titanium(IV) oxide (5a and 6a, respectively), vanadium(IV) oxide (7a and 8a, respectively) and tantalum(V) hydroxide (9a, peripheral only) and their electrochemical characterization are presented in this report. Their electrochemistry is compared to that of thiophenyl and thiobenzyl substituted derivatives. The non-peripherally substituted complexes are more difficult to reduce than peripherally substituted derivatives. In addition, the mercaptopyridine substituted derivatives are more difficult to reduce compared to benzylmercapto and phenylmercapto derivatives, and aryl easier reduce than alkyl substitution. Spectroelectrochemistry of the complexes confirmed metal and ring redox processes for TaPc and TiPc derivatives and ring based processes only for VPc complexes.
- Full Text:
- Date Issued: 2011