An investigation into the competencies associated with change leadership : a case study analysis of an information technology organisation
- Authors: Britton, Leola
- Date: 2010
- Subjects: Organizational change -- Management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:16138 , http://hdl.handle.net/10948/1227 , Organizational change -- Management
- Description: In this research, the researcher-consultant together with the management corps of a merged IT organisation, embarked on a process of participative research with the aim to identify the competencies and skills that are required of the management-leadership corps to drive a process of change management and to ensure the organisation will be characterised by sustained growth and development. In using participative research methodology, qualitative data was mainly gathered through informal interviews and focus group sessions to identify the competencies and skills that are defined as important for the change manager-cum-leader role within the merged IT organisation. In addition, a matrix was compiled to enable each manager/leader to undertake a self-assessment of how capable they are in using the identified competencies and skills. The outcome of the assessment provided an indication of the areas of competencies and skills that through various interventions would enable the management-leadership corps to deal with the challenges of change, as well as to guide those that report to them through a process of change. While the management-leadership corps – referred to as the Executive, Senior, and Middle Management cohorts – all require enhancing their change management / leadership competencies and skills capability, it is the Middle Management cohort that is better equipped to perform their change management and leadership role. During the research, focus group sessions enhanced a participative methodology to enable identification of competencies important to the IT Company’s vision, mission and core values, as well as opportunity to identify interventions that will encourage an on-going process of change, growth and development. However, there is indication that the members of the Executive and Senior Management cohorts assessed themselves higher on those competencies that relate directly to their functionary roles, rather than the change management-leadership role. The scope of a treatise limits an in-depth and expanded research endeavour; however, the methodology used provided information on how a platform for participation in a change management process can be enabled. Furthermore, this research gives indication of how a management-leadership strata can ‘buy-in’ to the process of change, growth and development, commencing with the self and, which is aimed to encourage the same in those that share responsibility for sustained growth and development of the IT company. The research is also example of how an applied sociology endeavour can be undertaken.
- Full Text:
- Date Issued: 2010
- Authors: Britton, Leola
- Date: 2010
- Subjects: Organizational change -- Management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:16138 , http://hdl.handle.net/10948/1227 , Organizational change -- Management
- Description: In this research, the researcher-consultant together with the management corps of a merged IT organisation, embarked on a process of participative research with the aim to identify the competencies and skills that are required of the management-leadership corps to drive a process of change management and to ensure the organisation will be characterised by sustained growth and development. In using participative research methodology, qualitative data was mainly gathered through informal interviews and focus group sessions to identify the competencies and skills that are defined as important for the change manager-cum-leader role within the merged IT organisation. In addition, a matrix was compiled to enable each manager/leader to undertake a self-assessment of how capable they are in using the identified competencies and skills. The outcome of the assessment provided an indication of the areas of competencies and skills that through various interventions would enable the management-leadership corps to deal with the challenges of change, as well as to guide those that report to them through a process of change. While the management-leadership corps – referred to as the Executive, Senior, and Middle Management cohorts – all require enhancing their change management / leadership competencies and skills capability, it is the Middle Management cohort that is better equipped to perform their change management and leadership role. During the research, focus group sessions enhanced a participative methodology to enable identification of competencies important to the IT Company’s vision, mission and core values, as well as opportunity to identify interventions that will encourage an on-going process of change, growth and development. However, there is indication that the members of the Executive and Senior Management cohorts assessed themselves higher on those competencies that relate directly to their functionary roles, rather than the change management-leadership role. The scope of a treatise limits an in-depth and expanded research endeavour; however, the methodology used provided information on how a platform for participation in a change management process can be enabled. Furthermore, this research gives indication of how a management-leadership strata can ‘buy-in’ to the process of change, growth and development, commencing with the self and, which is aimed to encourage the same in those that share responsibility for sustained growth and development of the IT company. The research is also example of how an applied sociology endeavour can be undertaken.
- Full Text:
- Date Issued: 2010
An investigation into the feasibility of incorporating didanosine into innovative solid lipid nanocarriers
- Authors: Wa Kasongo, Kasongo
- Date: 2010
- Subjects: Antiretroviral agents HIV infections -- Drug testing Didanosine Nanoparticles Drug delivery systems Nanostructured materials Lipids -- Therapeutic use
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3800 , http://hdl.handle.net/10962/d1003278
- Description: The research undertaken in these studies aimed to investigate the feasibility of developing and manufacturing innovative solid lipid carriers, such as solid lipid nanoparticles (SLN) and/or nanostructured lipid carriers (NLC) using a hot high pressure homogenization method, for didanosine(DDI). In addition, studies using in vitro differential protein adsorption were undertaken to establish whether the SLN and/or NLC have the potential to deliver DDI to the central nervous system (CNS). Prior to initiating pre-formulation, formulation development and optimization studies of DDI-Ioaded SLN and/or NLC, it was necessary to develop and validate an analytical method for the in vitro quantitation and analysis of DDI. An accurate, precise and sensitive RP-HPLC method with UV detection set at 248 nm was developed, optimized and validated for the quantitative in vitro analysis of DDI in formulations. Pre-formulation studies were designed to evaluate the thermal stability of DDI and to select and characterize lipid excipients that may be used for the manufacture of the nanocarriers. It was established that DDI is thermostable at temperatures not exceeding 163°C and therefore a hot high pressure homogenization technique could be used to manufacture DDI-loaded SLN and/or NLC. Lipid screening studies revealed that DDI is poorly soluble in both solid and liquid lipids. A combination of Precirol® ATO 5 and Transcutol® HP was found to have the best solubilizing-potential for DDI of all lipids investigated. The inclusion of Transcutol® HP into Precirol® ATO 5 changed the polymorphic form of the solid lipid from the stable 13-modification to a material that exhibited the co-existence between α- and β-polymorphic forms. The relatively high solubility of DDI in Transcutol® HP compared to Precirol® ATO 5 was an indication that a solid lipid matrix prepared from a binary mixture of Precirol® ATO 5 and Transcutol® HP was likely to have a higher loading capacity and encapsulation efficiency for DDI than a matrix consisting of Precirol® ATO 5 alone. Furthermore, the potential for the solid lipid matrix to exist in the α- and/or β-modifications when Transcutol® HP was added to Precirol® ATO 5 suggested that expulsion of DDI from a solid lipid matrix during prolonged storage periods was likely to be minimal. Therefore it was considered logical to investigate the feasibility of incorporating DDI into NLC and not in SLN. However, due to the limited solubility of DDI in lipids, formulation development of DDI-loaded NLC commenced using small quantities of DDI. Formulation development and optimization studies of DDI-loaded NLC were initially aimed at selecting a surfactant system that was capable of stabilizing NLC in an aqueous environment. Solutol® HS alone or a ternary mixture consisting of Solutol® HS, Tween® 80 and Lutrol® F68 was found to stabilize the nanoparticles in terms of particle size and the polydispersity index. The use of the ternary mixture as the surfactant system was preferred to using Solutol® HS alone as Lutrol® F68 and especially Tween® 80 have been successfully used to target the delivery of API to the brain. Aqueous DDI-free and DDI-Ioaded NLC containing increasing amounts of DDI were manufactured using hot high pressure homogenization at 800 bar for three cycles. The NLC formulations were characterized in terms of particle size, polydispersity index, zeta potential, and polymorphism, degree of crystallinity, encapsulation efficiency (EE), shape and surface morphology. The mean particle size for all formulations was below 250 nm with narrow polydispersity indices, indicating that narrow particle size distribution had been achieved. The d99% values for all formulations tested, were generated using laser diffractometry, and were below 400 nm, with span values ranging from 0.84 - 1.19 also suggesting that a narrow particle size distribution had been achieved. The zeta potential values measured in double distilled water with the conductivity adjusted to 50 μS/cm ranged from -18.4 to -11.4 mV. In addition, all the formulations showed a decrease in the degree of crystallinity as compared to the bulk lipid material and WAXS shows that the formulations existed in a single β-modification form. Furthermore DDI that had been incorporated into the NLC appeared to be molecularly dispersed in the lipid matrices. These parameters remained unaffected for most formulations following storage for two months at 25°C. In addition these formulations contained a mixture of spherical and non-spherical particles irrespective of the amount of DDI that was added during the manufacture of the formulations. These studies showed that it was feasible to develop and incorporate small amounts of DDI into NLC. However in order to use these delivery systems for oral administration of DDI to paediatric patients, strategies to improve the amount of DDI that could be loaded into the particles and to achieve high encapsulation efficiencies had to be developed. The limited solubility of DDI in lipid media was identified as a major factor that affected the loading capacity and encapsulation efficiency of DDI in the NLC. Therefore, a novel strategy aimed at increasing the saturation solubility of DDI in the lipid by attempting to increase the dissolution velocity of the drug in the lipid using a particle size reduction approach, was designed and investigated. DDI was dispersed in Transcutol® HP and the particle size of DDI in the liquid lipid medium was reduced gradually using hot high pressure homogenization and the product obtained from these studies was used to manufacture DDI-loaded NLC using a cold high pressure homogenization procedure. Although the encapsulation efficiency and drug loading following use of this approach was relatively high, the particles were large and showed a tendency to grow in size leading to the formation of microparticles after storage for two months at 25°C. In addition, the degree of crystallinity of the nanoparticles increased rapidly over the same storage period which led to expulsion of DDI nanoparticles for the NLC, despite the DDI loading in NLC being unaffected. It was clearly evident that this new approach of manufacturing solid lipid nanocarriers could be used as a platform not only for enhancing the loading capacity of DDI in solid lipid nanocarriers but also for other hydrophilic drugs. Differential protein adsorption patterns of DDI-loaded NLC were generated in vitro using two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) in order to establish the potential for these systems to deliver DDI to the CNS. NLC formulations containing small amounts of DDI were used as these formulations showed a better stability profile than the formulation with a higher encapsulation efficiency and drug loading capacity. Furthermore, the encapsulation efficiency and drug loading of DDI were considered sufficient for use in 2-D PAGE studies. Data obtained from 2-D PAGE analysis reveal that DDI-loaded NLC preferentially adsorb proteins in vitro that are responsible for specific brain targeting in vivo. More importantly, these studies reveal that in addition to Tween® 80 that has already been shown to have the potential to target CDDS to the brain, Solutol® HS 15 has the potential to achieve a similar objective. Consequently, DDI-loaded NLC have the potential to deliver DDI to the brain and these results may be used as a platform for conducting in vivo studies to establish whether DDI can cross the blood brain barrier and enter the CNS when administered in NLC which may in turn lead to a major breakthrough in the management of HIV/AIDS and Aids Dementia Complex (ADC).
- Full Text:
- Date Issued: 2010
- Authors: Wa Kasongo, Kasongo
- Date: 2010
- Subjects: Antiretroviral agents HIV infections -- Drug testing Didanosine Nanoparticles Drug delivery systems Nanostructured materials Lipids -- Therapeutic use
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3800 , http://hdl.handle.net/10962/d1003278
- Description: The research undertaken in these studies aimed to investigate the feasibility of developing and manufacturing innovative solid lipid carriers, such as solid lipid nanoparticles (SLN) and/or nanostructured lipid carriers (NLC) using a hot high pressure homogenization method, for didanosine(DDI). In addition, studies using in vitro differential protein adsorption were undertaken to establish whether the SLN and/or NLC have the potential to deliver DDI to the central nervous system (CNS). Prior to initiating pre-formulation, formulation development and optimization studies of DDI-Ioaded SLN and/or NLC, it was necessary to develop and validate an analytical method for the in vitro quantitation and analysis of DDI. An accurate, precise and sensitive RP-HPLC method with UV detection set at 248 nm was developed, optimized and validated for the quantitative in vitro analysis of DDI in formulations. Pre-formulation studies were designed to evaluate the thermal stability of DDI and to select and characterize lipid excipients that may be used for the manufacture of the nanocarriers. It was established that DDI is thermostable at temperatures not exceeding 163°C and therefore a hot high pressure homogenization technique could be used to manufacture DDI-loaded SLN and/or NLC. Lipid screening studies revealed that DDI is poorly soluble in both solid and liquid lipids. A combination of Precirol® ATO 5 and Transcutol® HP was found to have the best solubilizing-potential for DDI of all lipids investigated. The inclusion of Transcutol® HP into Precirol® ATO 5 changed the polymorphic form of the solid lipid from the stable 13-modification to a material that exhibited the co-existence between α- and β-polymorphic forms. The relatively high solubility of DDI in Transcutol® HP compared to Precirol® ATO 5 was an indication that a solid lipid matrix prepared from a binary mixture of Precirol® ATO 5 and Transcutol® HP was likely to have a higher loading capacity and encapsulation efficiency for DDI than a matrix consisting of Precirol® ATO 5 alone. Furthermore, the potential for the solid lipid matrix to exist in the α- and/or β-modifications when Transcutol® HP was added to Precirol® ATO 5 suggested that expulsion of DDI from a solid lipid matrix during prolonged storage periods was likely to be minimal. Therefore it was considered logical to investigate the feasibility of incorporating DDI into NLC and not in SLN. However, due to the limited solubility of DDI in lipids, formulation development of DDI-loaded NLC commenced using small quantities of DDI. Formulation development and optimization studies of DDI-loaded NLC were initially aimed at selecting a surfactant system that was capable of stabilizing NLC in an aqueous environment. Solutol® HS alone or a ternary mixture consisting of Solutol® HS, Tween® 80 and Lutrol® F68 was found to stabilize the nanoparticles in terms of particle size and the polydispersity index. The use of the ternary mixture as the surfactant system was preferred to using Solutol® HS alone as Lutrol® F68 and especially Tween® 80 have been successfully used to target the delivery of API to the brain. Aqueous DDI-free and DDI-Ioaded NLC containing increasing amounts of DDI were manufactured using hot high pressure homogenization at 800 bar for three cycles. The NLC formulations were characterized in terms of particle size, polydispersity index, zeta potential, and polymorphism, degree of crystallinity, encapsulation efficiency (EE), shape and surface morphology. The mean particle size for all formulations was below 250 nm with narrow polydispersity indices, indicating that narrow particle size distribution had been achieved. The d99% values for all formulations tested, were generated using laser diffractometry, and were below 400 nm, with span values ranging from 0.84 - 1.19 also suggesting that a narrow particle size distribution had been achieved. The zeta potential values measured in double distilled water with the conductivity adjusted to 50 μS/cm ranged from -18.4 to -11.4 mV. In addition, all the formulations showed a decrease in the degree of crystallinity as compared to the bulk lipid material and WAXS shows that the formulations existed in a single β-modification form. Furthermore DDI that had been incorporated into the NLC appeared to be molecularly dispersed in the lipid matrices. These parameters remained unaffected for most formulations following storage for two months at 25°C. In addition these formulations contained a mixture of spherical and non-spherical particles irrespective of the amount of DDI that was added during the manufacture of the formulations. These studies showed that it was feasible to develop and incorporate small amounts of DDI into NLC. However in order to use these delivery systems for oral administration of DDI to paediatric patients, strategies to improve the amount of DDI that could be loaded into the particles and to achieve high encapsulation efficiencies had to be developed. The limited solubility of DDI in lipid media was identified as a major factor that affected the loading capacity and encapsulation efficiency of DDI in the NLC. Therefore, a novel strategy aimed at increasing the saturation solubility of DDI in the lipid by attempting to increase the dissolution velocity of the drug in the lipid using a particle size reduction approach, was designed and investigated. DDI was dispersed in Transcutol® HP and the particle size of DDI in the liquid lipid medium was reduced gradually using hot high pressure homogenization and the product obtained from these studies was used to manufacture DDI-loaded NLC using a cold high pressure homogenization procedure. Although the encapsulation efficiency and drug loading following use of this approach was relatively high, the particles were large and showed a tendency to grow in size leading to the formation of microparticles after storage for two months at 25°C. In addition, the degree of crystallinity of the nanoparticles increased rapidly over the same storage period which led to expulsion of DDI nanoparticles for the NLC, despite the DDI loading in NLC being unaffected. It was clearly evident that this new approach of manufacturing solid lipid nanocarriers could be used as a platform not only for enhancing the loading capacity of DDI in solid lipid nanocarriers but also for other hydrophilic drugs. Differential protein adsorption patterns of DDI-loaded NLC were generated in vitro using two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) in order to establish the potential for these systems to deliver DDI to the CNS. NLC formulations containing small amounts of DDI were used as these formulations showed a better stability profile than the formulation with a higher encapsulation efficiency and drug loading capacity. Furthermore, the encapsulation efficiency and drug loading of DDI were considered sufficient for use in 2-D PAGE studies. Data obtained from 2-D PAGE analysis reveal that DDI-loaded NLC preferentially adsorb proteins in vitro that are responsible for specific brain targeting in vivo. More importantly, these studies reveal that in addition to Tween® 80 that has already been shown to have the potential to target CDDS to the brain, Solutol® HS 15 has the potential to achieve a similar objective. Consequently, DDI-loaded NLC have the potential to deliver DDI to the brain and these results may be used as a platform for conducting in vivo studies to establish whether DDI can cross the blood brain barrier and enter the CNS when administered in NLC which may in turn lead to a major breakthrough in the management of HIV/AIDS and Aids Dementia Complex (ADC).
- Full Text:
- Date Issued: 2010
An investigation into the journalistic identities of news workers at the state owned Lentsoe La Basotho/Lesotho Today Newspaper
- Authors: Kotele, Mothepane
- Date: 2010
- Subjects: Lentsoe La Basotho/Lesotho Today Mass media -- Economic aspects -- Lesotho Mass media -- Social aspects -- Lesotho Mass media -- Employees Journalists -- Lesotho Sotho newspapers Journalistic ethics -- Lesotho
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3449 , http://hdl.handle.net/10962/d1002903
- Description: Informed by the political economy framework and the public service role of media in democracy, the main objective of the study was to use in-depth semi-structured interviews to understand news-workers’ professional journalistic identities in relation to their status as government employees and the understanding of their public service role as outlined in the paper’s mission statement. The main interest was to understand the complexity of negotiating these role identities. Through reference to the theories of journalism professionalism, the study highlighted the extent to which news-workers in the small newsroom of Lentsoe la Basotho/Lesotho Today see themselves as public service journalists in a democratic country. The interest was borne partly out of the views of the paper’s critics who see it as not serving the public but rather promoting the activities and policies of the government of the day, thus falling short of its democratic role. The contention of the study was that as a public service newspaper, the paper should have news-workers who do impartial journalism and reflect the public’s right to know in their reporting. The findings of the study suggests that news-workers at Lentsoe la Basotho/Lesotho Today continuously have to strive to negotiate the potential conflict between being a professional and working for a government-controlled newspaper. While they sometimes lay claim to being journalists, the reality is that in their political coverage they end up adopting the role of government mouthpieces.
- Full Text:
- Date Issued: 2010
- Authors: Kotele, Mothepane
- Date: 2010
- Subjects: Lentsoe La Basotho/Lesotho Today Mass media -- Economic aspects -- Lesotho Mass media -- Social aspects -- Lesotho Mass media -- Employees Journalists -- Lesotho Sotho newspapers Journalistic ethics -- Lesotho
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3449 , http://hdl.handle.net/10962/d1002903
- Description: Informed by the political economy framework and the public service role of media in democracy, the main objective of the study was to use in-depth semi-structured interviews to understand news-workers’ professional journalistic identities in relation to their status as government employees and the understanding of their public service role as outlined in the paper’s mission statement. The main interest was to understand the complexity of negotiating these role identities. Through reference to the theories of journalism professionalism, the study highlighted the extent to which news-workers in the small newsroom of Lentsoe la Basotho/Lesotho Today see themselves as public service journalists in a democratic country. The interest was borne partly out of the views of the paper’s critics who see it as not serving the public but rather promoting the activities and policies of the government of the day, thus falling short of its democratic role. The contention of the study was that as a public service newspaper, the paper should have news-workers who do impartial journalism and reflect the public’s right to know in their reporting. The findings of the study suggests that news-workers at Lentsoe la Basotho/Lesotho Today continuously have to strive to negotiate the potential conflict between being a professional and working for a government-controlled newspaper. While they sometimes lay claim to being journalists, the reality is that in their political coverage they end up adopting the role of government mouthpieces.
- Full Text:
- Date Issued: 2010
An investigation into the organisational culture at an academically successful secondary school in Namibia
- Authors: Awarab, Erwin Ronald
- Date: 2010
- Subjects: Corporate culture -- Namibia -- Case studies Organizational behavior -- Namibia -- Case studies School management and organization -- Namibia -- Case studies Educational leadership -- Namibia -- Case studies Education, Secondary -- Namibia -- Case studies Educational change -- Namibia -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1612 , http://hdl.handle.net/10962/d1003494
- Description: The appreciation by leadership of the culture of an organisation plays an important role in the success of that organisation. Leadership and organisation culture are an inextricable part of the life of an organisation. The shared assumptions and beliefs of the individual within an organisation shape its culture. My study investigates the aspects of school culture and, further, looks at its link to the success of an organisation, and at the leadership style that influences such an organisation. My research, conducted in the interpretive paradigm, is a case study which was carried out at a public secondary school in the capital city of Windhoek, in Namibia. Since the school was built during South African rule, it was intended mainly for white children. Since independence, it has undergone transformation and is currently integrated, accommodating learners from different cultural backgrounds. It is a successful school, with a good reputation for its discipline and academic excellence. I chose this school deliberately, for those reasons. My findings are that there are aspects of culture which maintain its creation and perpetuate the existence of a particular culture at the school. This school’s culture is embedded within the Christian faith, and there are deliberate rituals and ceremonies put in place to enhance the creation and maintenance of the values that inform its culture, and the school leadership, management, teachers and student council members have a central role in this regard. My study shows that the creation, understanding and appreciation of beliefs and values of the individual within the organisation enable the consequent creation of the shared vision and values that ultimately lead to the foundation and maintenance of a strong culture.
- Full Text:
- Date Issued: 2010
- Authors: Awarab, Erwin Ronald
- Date: 2010
- Subjects: Corporate culture -- Namibia -- Case studies Organizational behavior -- Namibia -- Case studies School management and organization -- Namibia -- Case studies Educational leadership -- Namibia -- Case studies Education, Secondary -- Namibia -- Case studies Educational change -- Namibia -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1612 , http://hdl.handle.net/10962/d1003494
- Description: The appreciation by leadership of the culture of an organisation plays an important role in the success of that organisation. Leadership and organisation culture are an inextricable part of the life of an organisation. The shared assumptions and beliefs of the individual within an organisation shape its culture. My study investigates the aspects of school culture and, further, looks at its link to the success of an organisation, and at the leadership style that influences such an organisation. My research, conducted in the interpretive paradigm, is a case study which was carried out at a public secondary school in the capital city of Windhoek, in Namibia. Since the school was built during South African rule, it was intended mainly for white children. Since independence, it has undergone transformation and is currently integrated, accommodating learners from different cultural backgrounds. It is a successful school, with a good reputation for its discipline and academic excellence. I chose this school deliberately, for those reasons. My findings are that there are aspects of culture which maintain its creation and perpetuate the existence of a particular culture at the school. This school’s culture is embedded within the Christian faith, and there are deliberate rituals and ceremonies put in place to enhance the creation and maintenance of the values that inform its culture, and the school leadership, management, teachers and student council members have a central role in this regard. My study shows that the creation, understanding and appreciation of beliefs and values of the individual within the organisation enable the consequent creation of the shared vision and values that ultimately lead to the foundation and maintenance of a strong culture.
- Full Text:
- Date Issued: 2010
An investigation into the readability of the grade 10 physical science textbooks : a case study
- Authors: Van Heerden, Lesley Lynne
- Date: 2010
- Subjects: Textbooks -- South Africa -- Readability , Readability (Literary style) , Science -- Study and teaching (Secondary) -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1993 , http://hdl.handle.net/10962/d1013365
- Description: In her newsletter “Curriculum News, Improving the Quality of Learning and Teaching: Planning for 2010 and Beyond”, Mrs Angie Motshekga, MP, Minister of Basic Education, positions the textbook very definitely as central to the curriculum and states that it is one of the most effective tools through which to deliver the curriculum and support assessment. Acknowledging the importance of the accessibility of textbooks for the South African classroom audience, this study has sought to investigate the readability of the chemistry section of grade 10 science textbooks. Readability research is concerned with the relationship between the textbook, the reader and the context in which the book is read; research supports the use of both classical quantitative measures and a qualitative cognitive-structural form of analysis to investigate this relationship. The research design is a mixed method one where quantitative and qualitative data were collected simultaneously: the methodical application of selected readability formulae gave rise to quantitative data while the line-by-line textual analysis, tracing cognitive-structural aspects, and focus-group discussions with teachers gave rise to the qualitative data. The results of the merged data analysis were then interpreted together to provide a better understanding of the readability of the texts for a South African audience. The results of the investigation reveal that readability is greatly impaired for a number of reasons, the primary one being a lack of articulation between the textbook writers/editors and the audience for which they are writing and preparing the texts. This is particularly reflected in the inadequate preparation of the material for the English Second Language reader, as certain textbooks are completely out of their reach. Furthermore, this lack of articulation can be traced to the lack of time available for piloting the textbooks: an invaluable intervention in the process of textbook production.
- Full Text:
- Date Issued: 2010
- Authors: Van Heerden, Lesley Lynne
- Date: 2010
- Subjects: Textbooks -- South Africa -- Readability , Readability (Literary style) , Science -- Study and teaching (Secondary) -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1993 , http://hdl.handle.net/10962/d1013365
- Description: In her newsletter “Curriculum News, Improving the Quality of Learning and Teaching: Planning for 2010 and Beyond”, Mrs Angie Motshekga, MP, Minister of Basic Education, positions the textbook very definitely as central to the curriculum and states that it is one of the most effective tools through which to deliver the curriculum and support assessment. Acknowledging the importance of the accessibility of textbooks for the South African classroom audience, this study has sought to investigate the readability of the chemistry section of grade 10 science textbooks. Readability research is concerned with the relationship between the textbook, the reader and the context in which the book is read; research supports the use of both classical quantitative measures and a qualitative cognitive-structural form of analysis to investigate this relationship. The research design is a mixed method one where quantitative and qualitative data were collected simultaneously: the methodical application of selected readability formulae gave rise to quantitative data while the line-by-line textual analysis, tracing cognitive-structural aspects, and focus-group discussions with teachers gave rise to the qualitative data. The results of the merged data analysis were then interpreted together to provide a better understanding of the readability of the texts for a South African audience. The results of the investigation reveal that readability is greatly impaired for a number of reasons, the primary one being a lack of articulation between the textbook writers/editors and the audience for which they are writing and preparing the texts. This is particularly reflected in the inadequate preparation of the material for the English Second Language reader, as certain textbooks are completely out of their reach. Furthermore, this lack of articulation can be traced to the lack of time available for piloting the textbooks: an invaluable intervention in the process of textbook production.
- Full Text:
- Date Issued: 2010
An investigation into what influences action competence-oriented teaching and learning processes in a school environmental club
- Authors: James, Alison
- Date: 2010
- Subjects: Environmental education -- South Africa -- East London Environmental education -- Activity programs -- South Africa -- East London Environmental literacy -- South Africa -- East London Environmental literacy -- Study and teaching -- South Africa -- East London Active learning -- South Africa -- East London Competency-based education -- South Africa -- East London Teacher-student relationships -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1619 , http://hdl.handle.net/10962/d1003501
- Description: This interpretive case study sought to determine what influenced action competence-oriented teaching and learning processes in a high school environmental club. The goals were to describe a year of activities, within the TALON environmental club at Hudson Park High School in East London, South Africa and to identify how pedagogical, contextual and relational factors influenced action competence processes amongst club members. I explored how action competence theory and praxis have helped in other school education settings with the aim of establishing better environmental practices. The IVAC model of pedagogy (Jensen & Schnack, 1997) was used as a framework to operationalise action competence processes within the TALON Club. This entailed carefully examining investigative, visioning, action and change processes unfolding through the four themes of the club: plants, animal welfare, waste issues and our community outreach programme at Bongulethu High School. Using questionnaires, interviews, observation and a journal as the main methods of data collection I was able to make five analytical statements that related to the influence of pedagogy, the influence of context and the influence of relational dynamics within the TALON Club. The pedagogical processes were affected by the TALON members wanting to avoid any activities that were ‘too much like school’. However this served to compromise the action and visioning phases within the club, resulting in superficial and poorly-informed action-taking. The influence of context served to both enable and constrain action competence processes. The club and school structures therefore shaped the form that fledgling actions took as the TALON members participated in the meetings and outings and fulfilling the traditional expectations of the school community. Relational dynamics and a desire for fun took precedence over the action competence processes. Although the Club members were motivated by a sense of moral responsibility they were unable to articulate this concept into the club activities. In addition there were the power gradients between the educators and members to consider as determinants of the extent of participatory, democratic interactions. This complex interplay of factors influenced the action competence processes in the club. Recommendations were made on how best to work with the concepts of participation and democracy towards improving the reflexivity and knowledge base of both the educators and learners. In this way action competence processes will be better supported within the club in future.
- Full Text:
- Date Issued: 2010
- Authors: James, Alison
- Date: 2010
- Subjects: Environmental education -- South Africa -- East London Environmental education -- Activity programs -- South Africa -- East London Environmental literacy -- South Africa -- East London Environmental literacy -- Study and teaching -- South Africa -- East London Active learning -- South Africa -- East London Competency-based education -- South Africa -- East London Teacher-student relationships -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1619 , http://hdl.handle.net/10962/d1003501
- Description: This interpretive case study sought to determine what influenced action competence-oriented teaching and learning processes in a high school environmental club. The goals were to describe a year of activities, within the TALON environmental club at Hudson Park High School in East London, South Africa and to identify how pedagogical, contextual and relational factors influenced action competence processes amongst club members. I explored how action competence theory and praxis have helped in other school education settings with the aim of establishing better environmental practices. The IVAC model of pedagogy (Jensen & Schnack, 1997) was used as a framework to operationalise action competence processes within the TALON Club. This entailed carefully examining investigative, visioning, action and change processes unfolding through the four themes of the club: plants, animal welfare, waste issues and our community outreach programme at Bongulethu High School. Using questionnaires, interviews, observation and a journal as the main methods of data collection I was able to make five analytical statements that related to the influence of pedagogy, the influence of context and the influence of relational dynamics within the TALON Club. The pedagogical processes were affected by the TALON members wanting to avoid any activities that were ‘too much like school’. However this served to compromise the action and visioning phases within the club, resulting in superficial and poorly-informed action-taking. The influence of context served to both enable and constrain action competence processes. The club and school structures therefore shaped the form that fledgling actions took as the TALON members participated in the meetings and outings and fulfilling the traditional expectations of the school community. Relational dynamics and a desire for fun took precedence over the action competence processes. Although the Club members were motivated by a sense of moral responsibility they were unable to articulate this concept into the club activities. In addition there were the power gradients between the educators and members to consider as determinants of the extent of participatory, democratic interactions. This complex interplay of factors influenced the action competence processes in the club. Recommendations were made on how best to work with the concepts of participation and democracy towards improving the reflexivity and knowledge base of both the educators and learners. In this way action competence processes will be better supported within the club in future.
- Full Text:
- Date Issued: 2010
An investigation into work-family conflict in females occupying lower-level jobs
- Authors: Reddy, Koovesheni
- Date: 2010
- Subjects: Work and family -- South Africa -- Psychological aspects , Job stress -- South Africa , Job satisfaction -- South Africa , Role conflict , Women employees -- South Africa , Low-income single mothers -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9401 , http://hdl.handle.net/10948/1201 , Work and family -- South Africa -- Psychological aspects , Job stress -- South Africa , Job satisfaction -- South Africa , Role conflict , Women employees -- South Africa , Low-income single mothers -- South Africa
- Description: The study focused on work-family conflict among females occupying lower level jobs. A quantitative research methodology was conducted on a sample of (N=144) females working on the assembly line in two private sector organisations. The research instrument was a questionnaire comprising six parts. The variables were measured under four categories: work-family conflict, job demands, perceived organisational support and job self-efficacy. Descriptive statistics were used to analyse and interpret the data. A comparative study was done between Hesto and Alpha pharmaceutical employees and it was found that Hesto employees experience greater work-family conflict, job demands, perceived organisational support and job self-efficacy. The correlation results of the study showed that a significant negative relationship exists between perceived organisation support and work-family conflict. There was a weak positive relationship between perceived organisational support and job self-efficacy. Work demands was found to be positively and significantly related to work-family conflict. There was a significant negative relationship between perceived organisational support and work demand. A significant negative relationship was found between job self-efficacy and work-family conflict. Based on these results recommendations were made on how South African companies can help reduce work-family conflict.
- Full Text:
- Date Issued: 2010
- Authors: Reddy, Koovesheni
- Date: 2010
- Subjects: Work and family -- South Africa -- Psychological aspects , Job stress -- South Africa , Job satisfaction -- South Africa , Role conflict , Women employees -- South Africa , Low-income single mothers -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9401 , http://hdl.handle.net/10948/1201 , Work and family -- South Africa -- Psychological aspects , Job stress -- South Africa , Job satisfaction -- South Africa , Role conflict , Women employees -- South Africa , Low-income single mothers -- South Africa
- Description: The study focused on work-family conflict among females occupying lower level jobs. A quantitative research methodology was conducted on a sample of (N=144) females working on the assembly line in two private sector organisations. The research instrument was a questionnaire comprising six parts. The variables were measured under four categories: work-family conflict, job demands, perceived organisational support and job self-efficacy. Descriptive statistics were used to analyse and interpret the data. A comparative study was done between Hesto and Alpha pharmaceutical employees and it was found that Hesto employees experience greater work-family conflict, job demands, perceived organisational support and job self-efficacy. The correlation results of the study showed that a significant negative relationship exists between perceived organisation support and work-family conflict. There was a weak positive relationship between perceived organisational support and job self-efficacy. Work demands was found to be positively and significantly related to work-family conflict. There was a significant negative relationship between perceived organisational support and work demand. A significant negative relationship was found between job self-efficacy and work-family conflict. Based on these results recommendations were made on how South African companies can help reduce work-family conflict.
- Full Text:
- Date Issued: 2010
An investigation of financial and operational efficiency of pension funds in Kenya
- Authors: Njuguna, Amos Gitau
- Date: 2010
- Subjects: Pension trusts -- Kenya , Pension trusts -- Kenya -- Management , Pension trusts -- Investments -- Kenya , Retirement income -- Kenya , Retirees -- Kenya -- Finance, Personal
- Language: English
- Type: Thesis , Doctoral , DBA
- Identifier: vital:8679 , http://hdl.handle.net/10948/1144 , Pension trusts -- Kenya , Pension trusts -- Kenya -- Management , Pension trusts -- Investments -- Kenya , Retirement income -- Kenya , Retirees -- Kenya -- Finance, Personal
- Description: Pension funds are the principal sources of retirement income for millions of people in the world. Pension funds are also important contributors to the gross domestic product (GDP) of countries. This study focuses on pension funds in Kenya. Retirement income accounts for 68 percent of the total income of retirees in Kenya, while pension assets account for 30 percent of Kenya’s GDP. It is therefore important that pension funds be managed effectively, not only in Kenya, but also in other countries. The primary objective of the study is to investigate ways of enhancing pension fund efficiency by establishing the determinants of such efficiency. More specifically, the study explores the effect that the organisational culture, regulations, investment strategy, ethics, risk management, design, size and the age profile of members of pension funds exert on the efficiency of these funds. A sample of 749 pension funds was drawn from the Kenyan Retirement Benefits Authority (RBA) register. The sample selection was based on the criterion that these pension funds should have been in existence within the period 2001 to 2008. Seven hundred and forty-nine (749) questionnaires were mailed to the trustees of these pension funds. Three hundred and sixty-two (362) usable questionnaires were returned, which translated into a response rate of 48.3 per cent. Except for financial efficiency, self-constructed instruments based on secondary literature reviews were used to measure the variables in the hypothesised model to improve pension fund efficiency. Appropriate steps were taken to ensure the validity and reliability of these measuring instruments. The empirical results revealed that leadership, governance, regulations, design, membership age and size of funds had no significant influence on operational efficiency of these funds. The results further showed that the membership age, design, regulations and operational efficiency of pension funds exerted no significant influence on their financial efficiency. The results also revealed that the membership age, size and design of pension funds did not influence how these funds were led by their leadership. iv The empirical results however showed that smaller pension funds were perceived to exhibit better financial efficiency, while pension funds with membership aged 31 - 40 were perceived to be better governed compared to other age groups. Finally, in rigorous structural equation analyses, no significant relationships were found between fund regulations (independent variable), on the one hand, and fund governance and leadership (dependent variables), on the other hand. Use of simple linear regression however disclosed a significant positive relationship between the afore-mentioned independent variable and dependent variables.
- Full Text:
- Date Issued: 2010
- Authors: Njuguna, Amos Gitau
- Date: 2010
- Subjects: Pension trusts -- Kenya , Pension trusts -- Kenya -- Management , Pension trusts -- Investments -- Kenya , Retirement income -- Kenya , Retirees -- Kenya -- Finance, Personal
- Language: English
- Type: Thesis , Doctoral , DBA
- Identifier: vital:8679 , http://hdl.handle.net/10948/1144 , Pension trusts -- Kenya , Pension trusts -- Kenya -- Management , Pension trusts -- Investments -- Kenya , Retirement income -- Kenya , Retirees -- Kenya -- Finance, Personal
- Description: Pension funds are the principal sources of retirement income for millions of people in the world. Pension funds are also important contributors to the gross domestic product (GDP) of countries. This study focuses on pension funds in Kenya. Retirement income accounts for 68 percent of the total income of retirees in Kenya, while pension assets account for 30 percent of Kenya’s GDP. It is therefore important that pension funds be managed effectively, not only in Kenya, but also in other countries. The primary objective of the study is to investigate ways of enhancing pension fund efficiency by establishing the determinants of such efficiency. More specifically, the study explores the effect that the organisational culture, regulations, investment strategy, ethics, risk management, design, size and the age profile of members of pension funds exert on the efficiency of these funds. A sample of 749 pension funds was drawn from the Kenyan Retirement Benefits Authority (RBA) register. The sample selection was based on the criterion that these pension funds should have been in existence within the period 2001 to 2008. Seven hundred and forty-nine (749) questionnaires were mailed to the trustees of these pension funds. Three hundred and sixty-two (362) usable questionnaires were returned, which translated into a response rate of 48.3 per cent. Except for financial efficiency, self-constructed instruments based on secondary literature reviews were used to measure the variables in the hypothesised model to improve pension fund efficiency. Appropriate steps were taken to ensure the validity and reliability of these measuring instruments. The empirical results revealed that leadership, governance, regulations, design, membership age and size of funds had no significant influence on operational efficiency of these funds. The results further showed that the membership age, design, regulations and operational efficiency of pension funds exerted no significant influence on their financial efficiency. The results also revealed that the membership age, size and design of pension funds did not influence how these funds were led by their leadership. iv The empirical results however showed that smaller pension funds were perceived to exhibit better financial efficiency, while pension funds with membership aged 31 - 40 were perceived to be better governed compared to other age groups. Finally, in rigorous structural equation analyses, no significant relationships were found between fund regulations (independent variable), on the one hand, and fund governance and leadership (dependent variables), on the other hand. Use of simple linear regression however disclosed a significant positive relationship between the afore-mentioned independent variable and dependent variables.
- Full Text:
- Date Issued: 2010
An investigation of how the Namibian Environmental Education Course has shaped and informed the practice of non-formal environmental educators in Namibia
- Authors: Namutenya, Martina
- Date: 2010
- Subjects: Environmental education -- Namibia , Environmental education -- Study and teaching -- Namibia , Non-formal education -- Namibia , Sustainable development -- Namibia , Environmental literacy -- Namibia , Environmental literacy -- Study and teaching -- Namibia , Conservation of natural resources -- Study and teaching -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2000 , http://hdl.handle.net/10962/d1015225
- Description: Before Namibia's independence in 1990 educational programmes and curricula gave little attention to environmental education which was detrimental to the development of environmental literacy in Namibia. The post independence education reform process paid special attention to the inclusion of environmental education in all spheres of learning. Furthermore, Namibia became a signatory to various environmental conventions thereby raising awareness about the environment and the potential challenges to a sustainable future. The initiatives of various environmental education projects since independence have responded to the growing concern of environmental education programmes, resulting in the establishment of the Namibian Environmental Education Course (NEEC). To date few studies have been conducted examining the relevance of EE programmes in relation to the professional practice of EE providers in the non-formal sector. This study focuses on the work done by two environmental education providers and four assistant environmental education tutors in Rundu, in North-Eastern Namibia. The study adopted a qualitative approach to investigate how the NEEC has shaped and informed the practice of EE providers in the non-formal sector and also how the NEEC has responded to the Education for Sustainable Development (ESD) programme. The study employed three data collection instruments: interviews, field observations and document analysis. The findings indicated that despite the input of the NEEC programme which provided an understanding and knowledge of environmental problems to the EE providers, there are issues that continue to hamper the effective practice of these providers. The study revealed that the NEEC programme, while within the structure of ESD, does not give explicit guidelines for identifying Namibia's environmental challenges and clear strategies of how to respond to these challenges. The findings of the study have provided valuable insights into aspects of an EE programme that need to be addressed to support EE providers in responding to key environmental challenges in their regions and contribute to the decade of Education for Sustainable Development.
- Full Text:
- Date Issued: 2010
- Authors: Namutenya, Martina
- Date: 2010
- Subjects: Environmental education -- Namibia , Environmental education -- Study and teaching -- Namibia , Non-formal education -- Namibia , Sustainable development -- Namibia , Environmental literacy -- Namibia , Environmental literacy -- Study and teaching -- Namibia , Conservation of natural resources -- Study and teaching -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2000 , http://hdl.handle.net/10962/d1015225
- Description: Before Namibia's independence in 1990 educational programmes and curricula gave little attention to environmental education which was detrimental to the development of environmental literacy in Namibia. The post independence education reform process paid special attention to the inclusion of environmental education in all spheres of learning. Furthermore, Namibia became a signatory to various environmental conventions thereby raising awareness about the environment and the potential challenges to a sustainable future. The initiatives of various environmental education projects since independence have responded to the growing concern of environmental education programmes, resulting in the establishment of the Namibian Environmental Education Course (NEEC). To date few studies have been conducted examining the relevance of EE programmes in relation to the professional practice of EE providers in the non-formal sector. This study focuses on the work done by two environmental education providers and four assistant environmental education tutors in Rundu, in North-Eastern Namibia. The study adopted a qualitative approach to investigate how the NEEC has shaped and informed the practice of EE providers in the non-formal sector and also how the NEEC has responded to the Education for Sustainable Development (ESD) programme. The study employed three data collection instruments: interviews, field observations and document analysis. The findings indicated that despite the input of the NEEC programme which provided an understanding and knowledge of environmental problems to the EE providers, there are issues that continue to hamper the effective practice of these providers. The study revealed that the NEEC programme, while within the structure of ESD, does not give explicit guidelines for identifying Namibia's environmental challenges and clear strategies of how to respond to these challenges. The findings of the study have provided valuable insights into aspects of an EE programme that need to be addressed to support EE providers in responding to key environmental challenges in their regions and contribute to the decade of Education for Sustainable Development.
- Full Text:
- Date Issued: 2010
An investigation of IgE regulation by recombinant soluble IgE receptors and co-receptors in human cell culture models
- Authors: Bowles, Sandra Lyn
- Date: 2010
- Subjects: Immunoglobulin E , Allergy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10321 , http://hdl.handle.net/10948/1231 , Immunoglobulin E , Allergy
- Description: Type I hypersensitivities are mediated by the IgE antibody. The effector functions and synthesis of IgE result from interactions with a network of proteins that include a high affinity (FcRIα) and a low affinity (CD23, FcRII) Fc receptor in conjunction with the B lymphocyte receptor, CD21. CD23 is a multifunctional type II transmembrane protein that binds its known ligands through its ectodomain either as a membrane-bound or soluble receptor generated in vivo by specific proteolytic cleavages. IgE production is primarily regulated by interactions between IgE, CD23 and CD21. Despite its importance for development of strategies to limit hypersensitivity, precise information about the molecular interactions remains limited. During this study, I engineered, expressed and purified from bacteria three soluble human CD23 fragments that are normally formed in vivo and shed from the cell surface (1) derCD23, amino acids 156-298 (2) sCD23, amino acids 150-321 and (3) the entire ectodomain, exCD23, amino acids 48-321 to examine the comparative binding of recombinant human CD21 SCR 1-2 and native human IgE to these fragments. Gel filtration HPLC revealed that derCD23 and sCD23 were monomeric whereas exCD23 assembled as a heterogeneous mixture that included trimers and monomers. At the concentrations utilized, CD23 fragments sCD23 and exCD23 bound CD21 with similar affinity, whereas interaction between derCD23 and CD21 was minimal when analyzed by surface plasmon resonance (SPR) spectroscopy. These findings suggest that penultimate “tail” amino acids between 298 and 321 stabilize CD21 attachment, although it cannot be ruled out, the region between Met 150 and Ser 156 may also play a role in binding CD21 SCR 1-2. In contrast, there is a progressive increment in the affinity of soluble fragments (exCD23>sCD23>derCD23) for IgE, upon increasing length of the proximal CD23 “stalk” domain. These findings highlight the differences in both the structural basis and affinity of the three physiological fragments of human CD23 for the ligands CD21 and IgE and underscore the complexity of CD23-mediated regulatory networks. It was found that B-cells only make up ~5% of the PBMC population, and that these cells were able to be activated, via STAT-6 phosphorylation, to enter class switch recombination (CSR) by the addition of switch factors (IL-4 and anti-CD40). Titration experiments dictated that 25 ng/mL of CD23 was the most efficient concentration to up-regulate IgE synthesis in PBMCs; furthermore, soluble CD23 proteins were incubated with PBMCs in the presence and absence of CD21 SCR 1-2 to investigate the effect that these recombinant proteins have on IgE synthesis. Results showed that the influence of recombinant proteins (both CD23 and CD21) on IgE synthesis was slight. It was shown that while derCD23 had no significant effect, monomeric sCD23 down-regulated, and the mixture of monomeric and oligomeric exCD23 up-regulated IgE synthesis. On addition of CD21 SCR 1-2 to the cells switched and treated with soluble CD23, it was found that in both cases for sCD23 and exCD23, IgE synthesis was increased, while for derCD23, there was no noticeable difference in IgE synthesis. This confirmed previous data showing the lack of binding between derCD23 and CD21 SCR 1-2. The exact binding site for CD21 on the CD23 molecule is unknown, and incompletely represented in the NMR and crystal structures. It is thought that CD21 binds to the C-terminal tail section, not present in derCD23. It is therefore likely that only a negative-feedback mechanism operates with derCD23 to regulate IgE synthesis. Further investigation of the binding of CD23 fragments to SCR 5-8 of CD21 and the effect of this on IgE synthesis may lead to a potential therapeutic role for derCD23 in the treatment of allergic disease. Data accumulated in this study suggests that investigating the modulation of oligomeric state and thus the activity of soluble CD23 fragments may be important in the construction of new regulators of IgE synthesis.
- Full Text:
- Date Issued: 2010
- Authors: Bowles, Sandra Lyn
- Date: 2010
- Subjects: Immunoglobulin E , Allergy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10321 , http://hdl.handle.net/10948/1231 , Immunoglobulin E , Allergy
- Description: Type I hypersensitivities are mediated by the IgE antibody. The effector functions and synthesis of IgE result from interactions with a network of proteins that include a high affinity (FcRIα) and a low affinity (CD23, FcRII) Fc receptor in conjunction with the B lymphocyte receptor, CD21. CD23 is a multifunctional type II transmembrane protein that binds its known ligands through its ectodomain either as a membrane-bound or soluble receptor generated in vivo by specific proteolytic cleavages. IgE production is primarily regulated by interactions between IgE, CD23 and CD21. Despite its importance for development of strategies to limit hypersensitivity, precise information about the molecular interactions remains limited. During this study, I engineered, expressed and purified from bacteria three soluble human CD23 fragments that are normally formed in vivo and shed from the cell surface (1) derCD23, amino acids 156-298 (2) sCD23, amino acids 150-321 and (3) the entire ectodomain, exCD23, amino acids 48-321 to examine the comparative binding of recombinant human CD21 SCR 1-2 and native human IgE to these fragments. Gel filtration HPLC revealed that derCD23 and sCD23 were monomeric whereas exCD23 assembled as a heterogeneous mixture that included trimers and monomers. At the concentrations utilized, CD23 fragments sCD23 and exCD23 bound CD21 with similar affinity, whereas interaction between derCD23 and CD21 was minimal when analyzed by surface plasmon resonance (SPR) spectroscopy. These findings suggest that penultimate “tail” amino acids between 298 and 321 stabilize CD21 attachment, although it cannot be ruled out, the region between Met 150 and Ser 156 may also play a role in binding CD21 SCR 1-2. In contrast, there is a progressive increment in the affinity of soluble fragments (exCD23>sCD23>derCD23) for IgE, upon increasing length of the proximal CD23 “stalk” domain. These findings highlight the differences in both the structural basis and affinity of the three physiological fragments of human CD23 for the ligands CD21 and IgE and underscore the complexity of CD23-mediated regulatory networks. It was found that B-cells only make up ~5% of the PBMC population, and that these cells were able to be activated, via STAT-6 phosphorylation, to enter class switch recombination (CSR) by the addition of switch factors (IL-4 and anti-CD40). Titration experiments dictated that 25 ng/mL of CD23 was the most efficient concentration to up-regulate IgE synthesis in PBMCs; furthermore, soluble CD23 proteins were incubated with PBMCs in the presence and absence of CD21 SCR 1-2 to investigate the effect that these recombinant proteins have on IgE synthesis. Results showed that the influence of recombinant proteins (both CD23 and CD21) on IgE synthesis was slight. It was shown that while derCD23 had no significant effect, monomeric sCD23 down-regulated, and the mixture of monomeric and oligomeric exCD23 up-regulated IgE synthesis. On addition of CD21 SCR 1-2 to the cells switched and treated with soluble CD23, it was found that in both cases for sCD23 and exCD23, IgE synthesis was increased, while for derCD23, there was no noticeable difference in IgE synthesis. This confirmed previous data showing the lack of binding between derCD23 and CD21 SCR 1-2. The exact binding site for CD21 on the CD23 molecule is unknown, and incompletely represented in the NMR and crystal structures. It is thought that CD21 binds to the C-terminal tail section, not present in derCD23. It is therefore likely that only a negative-feedback mechanism operates with derCD23 to regulate IgE synthesis. Further investigation of the binding of CD23 fragments to SCR 5-8 of CD21 and the effect of this on IgE synthesis may lead to a potential therapeutic role for derCD23 in the treatment of allergic disease. Data accumulated in this study suggests that investigating the modulation of oligomeric state and thus the activity of soluble CD23 fragments may be important in the construction of new regulators of IgE synthesis.
- Full Text:
- Date Issued: 2010
An investigation of principals' perceptions and experiences of the implementation of the national standards and performance indicators (NSPI) for Namibian schools in the Ohangwena region
- Authors: Johannes, Thomas Kamusheefa
- Date: 2010
- Subjects: Professional education -- Namibia Educational change -- Namibia Education -- Namibia Education and state -- Namibia School management and organization -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1640 , http://hdl.handle.net/10962/d1003522
- Description: The post independence Namibian education system has been characterised by many reform initiatives, aimed at eradicating inequity, poor performance, and inferior education provision inherited from a pre-independence education system. This legacy posed a serious challenge to Namibia when it set out to achieve a national goal, Vision 2030. Vision 2030 inspires Namibia to be among the eveloped countries in 2030. In an attempt to achieve the goals outlined by the mission statement of Vision 2030, the Ministry of Education (MoE) introduced two national education initiatives: the Education and Training Sector Improvement Program (ETSIP), and the National Standards and Performance Indicators (NSPIs). These would be implemented in Namibian schools as, respectively, the Ministry’s strategic plan and its policy document. The NSPIs were introduced to address the fragmentation of standards and inequity in regions and schools in Namibia, as they aimed to standardise the provision of equal, quality education across the country (Namibia. MoE, 2005a, p. 1). The NSPI policy calls for schools to take quality assurance seriously, with particular emphasis on School Self-Evaluation (SSE), a process that encourages self-management (Namibia. MoE, 2007a, p. 3). Thus, the standards set out by the NSPIs became the yardstick by which internal and external school evaluators could assess whole school performance. The purpose of this present study was to investigate the perceptions and experiences of principals in the Ohangwena Region following the implementation of the NSPIs. It is a case study involving two Inspectors of Education (IoEs), twelve principals, and four Heads of Department (HODs). Interviews, document analysis, questionnaires, and a focus group interview were used to collect the data. The study found that principals acknowledge the importance of the NSPIs, and believe that they would succeed in improving the provision of quality education if they were fully implemented. The study found that schools implemented Performance Indicators 5.3 (School Administration) Aspect 5.3.2 (Storage and retrieval of information) in Key Area 5. However, the results of the study also showed that principals experienced many challenges in the implementation of the NSPIs. These included a lack of understanding among principals and teachers of the NSPIs, a lack of understanding of contemporary leadership theories (that would otherwise help principals to implement change effectively), and a lack of support in terms of skills and resources from both the Regional Office in Ohangwena and the MoE itself. The study found that the NSPIs have not yet improved school performance, and consequently that the pass rate remains the same as before the introduction of the NSPIs, four years ago. The SSE, which aims to help schools identify their strengths and weaknesses, and encourages them to establish and make use of a School Development Plan (SDP) to address weaknesses and sustain strengths, is characterised by a high degree of dishonesty. Thus, the information furnished by SSEs, SDPs, and Teachers Self-Evaluations (TSEs) is unreliable, lacks credibility, and has the further ill-effect of skewing schools’ performance targets. Therefore, this problem could be addressed when the rationale of completing the SSE is clearly explained to principals and teachers.
- Full Text:
- Date Issued: 2010
- Authors: Johannes, Thomas Kamusheefa
- Date: 2010
- Subjects: Professional education -- Namibia Educational change -- Namibia Education -- Namibia Education and state -- Namibia School management and organization -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1640 , http://hdl.handle.net/10962/d1003522
- Description: The post independence Namibian education system has been characterised by many reform initiatives, aimed at eradicating inequity, poor performance, and inferior education provision inherited from a pre-independence education system. This legacy posed a serious challenge to Namibia when it set out to achieve a national goal, Vision 2030. Vision 2030 inspires Namibia to be among the eveloped countries in 2030. In an attempt to achieve the goals outlined by the mission statement of Vision 2030, the Ministry of Education (MoE) introduced two national education initiatives: the Education and Training Sector Improvement Program (ETSIP), and the National Standards and Performance Indicators (NSPIs). These would be implemented in Namibian schools as, respectively, the Ministry’s strategic plan and its policy document. The NSPIs were introduced to address the fragmentation of standards and inequity in regions and schools in Namibia, as they aimed to standardise the provision of equal, quality education across the country (Namibia. MoE, 2005a, p. 1). The NSPI policy calls for schools to take quality assurance seriously, with particular emphasis on School Self-Evaluation (SSE), a process that encourages self-management (Namibia. MoE, 2007a, p. 3). Thus, the standards set out by the NSPIs became the yardstick by which internal and external school evaluators could assess whole school performance. The purpose of this present study was to investigate the perceptions and experiences of principals in the Ohangwena Region following the implementation of the NSPIs. It is a case study involving two Inspectors of Education (IoEs), twelve principals, and four Heads of Department (HODs). Interviews, document analysis, questionnaires, and a focus group interview were used to collect the data. The study found that principals acknowledge the importance of the NSPIs, and believe that they would succeed in improving the provision of quality education if they were fully implemented. The study found that schools implemented Performance Indicators 5.3 (School Administration) Aspect 5.3.2 (Storage and retrieval of information) in Key Area 5. However, the results of the study also showed that principals experienced many challenges in the implementation of the NSPIs. These included a lack of understanding among principals and teachers of the NSPIs, a lack of understanding of contemporary leadership theories (that would otherwise help principals to implement change effectively), and a lack of support in terms of skills and resources from both the Regional Office in Ohangwena and the MoE itself. The study found that the NSPIs have not yet improved school performance, and consequently that the pass rate remains the same as before the introduction of the NSPIs, four years ago. The SSE, which aims to help schools identify their strengths and weaknesses, and encourages them to establish and make use of a School Development Plan (SDP) to address weaknesses and sustain strengths, is characterised by a high degree of dishonesty. Thus, the information furnished by SSEs, SDPs, and Teachers Self-Evaluations (TSEs) is unreliable, lacks credibility, and has the further ill-effect of skewing schools’ performance targets. Therefore, this problem could be addressed when the rationale of completing the SSE is clearly explained to principals and teachers.
- Full Text:
- Date Issued: 2010
An investigation of prior knowledge about amphibians amongst Grade 7 learners : towards the development of a resource pack
- Authors: Gordon, Louise
- Date: 2010
- Subjects: Amphibians -- Study and teaching -- South Africa Environmental education -- South Africa Natural sciences -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1641 , http://hdl.handle.net/10962/d1003523
- Description: The value of frogs is compared to the value of canaries used in coalmines: they are indicators of the environmental status of our environments, thus crucial to our survival. One third of all frogs worldwide are threatened with extinction. Frogs are found in our immediate environment. Are our Natural Science educators, teaching the Life and Living curriculum aware of this threat, the possible impact that the extinction of frogs will have on our welfare? Are our educators making use of the resources in their immediate environment? This study aimed to investigate the prior knowledge in both the horizontal and vertical discourse, in Grade7 learners and their educators, to inform the design of an amphibian resource pack. By investigating their prior knowledge an insight would be gained in their knowledge of Natural Science concepts as well as their everyday knowledge of their immediate natural environment. It would also highlight any misconceptions formed as well as alternative concepts within both educator and learner groups. These insights would be used to inform the contents of said resource pack.
- Full Text:
- Date Issued: 2010
- Authors: Gordon, Louise
- Date: 2010
- Subjects: Amphibians -- Study and teaching -- South Africa Environmental education -- South Africa Natural sciences -- Study and teaching -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1641 , http://hdl.handle.net/10962/d1003523
- Description: The value of frogs is compared to the value of canaries used in coalmines: they are indicators of the environmental status of our environments, thus crucial to our survival. One third of all frogs worldwide are threatened with extinction. Frogs are found in our immediate environment. Are our Natural Science educators, teaching the Life and Living curriculum aware of this threat, the possible impact that the extinction of frogs will have on our welfare? Are our educators making use of the resources in their immediate environment? This study aimed to investigate the prior knowledge in both the horizontal and vertical discourse, in Grade7 learners and their educators, to inform the design of an amphibian resource pack. By investigating their prior knowledge an insight would be gained in their knowledge of Natural Science concepts as well as their everyday knowledge of their immediate natural environment. It would also highlight any misconceptions formed as well as alternative concepts within both educator and learner groups. These insights would be used to inform the contents of said resource pack.
- Full Text:
- Date Issued: 2010
An investigation of the African subjectivity represented in Gavin Hood's Tsotsi (2006)
- Authors: Siwak, Jakub
- Date: 2010
- Subjects: Subjectivity in literature , Subjectivity Drama , Violence in motion pictures
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8391 , http://hdl.handle.net/10948/1093 , Subjectivity in literature , Subjectivity Drama , Violence in motion pictures
- Description: This treatise will focus on a critical examination of Gavin Hood’s South African Oscar-winning film, Tsotsi (2006), in the interest of exploring how the mass media creates a problematic configuration of the subject, in virtue of its valorization of the continued discursive colonization of Africans (identified broadly in geographical rather than racial terms). That is, within the narrative of the film, the protagonist, after engaging in a crime spree, gives himself over to the state authorities and emotively confesses to his transgressions. Importantly, this dramatic confession is represented as a triumph of the human spirit – in the form of an autonomous rehabilitation on the part of the criminal. However, if one understands the protagonist as a subject constituted by what Foucault terms the discursive regimes of disciplinary/bio-power, what emerges into conspicuity is that the protagonist’s actions rather than being the result of his growing maturity and concomitant augmenting ‘humanity’ are the consequence of a set of discursive imperatives which render him docile and prostrate. Arguably, what this serves to represent, and, indeed, propagate, is more of a superimposition of Western cultural discourses on African subjects, and less of a negotiation with such discourses by such subjects. The treatise aims to provide a theoretical solution to the negation of alternative modes of being by disciplinary/bio-power imperatives inextricable from neo-liberal subjectivity. However, in its attempts to encourage cultural negotiation between North and South, the treatise will avoid simplistic, ‘orthodox’, Marxist solutions and will instead critically contend with the theory of Ernesto Laclau and Chantal Mouffe, and their perspectives on how radical democracy can be achieved.
- Full Text:
- Date Issued: 2010
- Authors: Siwak, Jakub
- Date: 2010
- Subjects: Subjectivity in literature , Subjectivity Drama , Violence in motion pictures
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8391 , http://hdl.handle.net/10948/1093 , Subjectivity in literature , Subjectivity Drama , Violence in motion pictures
- Description: This treatise will focus on a critical examination of Gavin Hood’s South African Oscar-winning film, Tsotsi (2006), in the interest of exploring how the mass media creates a problematic configuration of the subject, in virtue of its valorization of the continued discursive colonization of Africans (identified broadly in geographical rather than racial terms). That is, within the narrative of the film, the protagonist, after engaging in a crime spree, gives himself over to the state authorities and emotively confesses to his transgressions. Importantly, this dramatic confession is represented as a triumph of the human spirit – in the form of an autonomous rehabilitation on the part of the criminal. However, if one understands the protagonist as a subject constituted by what Foucault terms the discursive regimes of disciplinary/bio-power, what emerges into conspicuity is that the protagonist’s actions rather than being the result of his growing maturity and concomitant augmenting ‘humanity’ are the consequence of a set of discursive imperatives which render him docile and prostrate. Arguably, what this serves to represent, and, indeed, propagate, is more of a superimposition of Western cultural discourses on African subjects, and less of a negotiation with such discourses by such subjects. The treatise aims to provide a theoretical solution to the negation of alternative modes of being by disciplinary/bio-power imperatives inextricable from neo-liberal subjectivity. However, in its attempts to encourage cultural negotiation between North and South, the treatise will avoid simplistic, ‘orthodox’, Marxist solutions and will instead critically contend with the theory of Ernesto Laclau and Chantal Mouffe, and their perspectives on how radical democracy can be achieved.
- Full Text:
- Date Issued: 2010
An investigation of the continued relevance of Faludi's Backlash (1992) for the negotiation of gender identity, in the wake of the "Lara Croft" phenomenon
- Authors: Van Antwerpen, Lee-Anne
- Date: 2010
- Subjects: Gender identity in mass media , Feminism , Feminism -- Public opinion , Women -- Social conditions , Women -- Psychology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8390 , http://hdl.handle.net/10948/1129 , Gender identity in mass media , Feminism , Feminism -- Public opinion , Women -- Social conditions , Women -- Psychology
- Description: In the 1990s, Susan Faludi’s Backlash: The Undeclared War Against Women (1992) was arguably of signal importance in the thematization of the limits imposed by the media on the negotiation of gender identity. However, the utilization of Faludi’s various analyses, in the interest of rendering social critique, has become progressively more problematic during the first decade of the 21st century. This is because her analyses engage neither with the development of media technologies subsequent to the early 1990s, nor with the way in which such technological developments now engage audiences on a greater multiplicity of levels than before, in a manner that consequently stands to inform their subjectivity to a degree hitherto unimagined. (A good example of the latter would, of course, be the proliferation of interactive exchanges on the World Wide Web). As such, in the light of such technological developments, this treatise is orientated around an investigation of the continued relevance of Faludi’s Backlash (1992) for the negotiation of gender identity in the contemporary era. In particular, its focus falls on West’s film Lara Croft: Tomb Raider (2001), which is considered against the backdrop of the Lara Croft: Tomb Raider phenomenon, which encompasses sequels to the film, online interactive sites, graphic novels, figurines, and video games, among other products. This investigation draws on the reception theory of, on the one hand, Adorno and Horkheimer, and, on the other hand, Stuart Hall.
- Full Text:
- Date Issued: 2010
- Authors: Van Antwerpen, Lee-Anne
- Date: 2010
- Subjects: Gender identity in mass media , Feminism , Feminism -- Public opinion , Women -- Social conditions , Women -- Psychology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8390 , http://hdl.handle.net/10948/1129 , Gender identity in mass media , Feminism , Feminism -- Public opinion , Women -- Social conditions , Women -- Psychology
- Description: In the 1990s, Susan Faludi’s Backlash: The Undeclared War Against Women (1992) was arguably of signal importance in the thematization of the limits imposed by the media on the negotiation of gender identity. However, the utilization of Faludi’s various analyses, in the interest of rendering social critique, has become progressively more problematic during the first decade of the 21st century. This is because her analyses engage neither with the development of media technologies subsequent to the early 1990s, nor with the way in which such technological developments now engage audiences on a greater multiplicity of levels than before, in a manner that consequently stands to inform their subjectivity to a degree hitherto unimagined. (A good example of the latter would, of course, be the proliferation of interactive exchanges on the World Wide Web). As such, in the light of such technological developments, this treatise is orientated around an investigation of the continued relevance of Faludi’s Backlash (1992) for the negotiation of gender identity in the contemporary era. In particular, its focus falls on West’s film Lara Croft: Tomb Raider (2001), which is considered against the backdrop of the Lara Croft: Tomb Raider phenomenon, which encompasses sequels to the film, online interactive sites, graphic novels, figurines, and video games, among other products. This investigation draws on the reception theory of, on the one hand, Adorno and Horkheimer, and, on the other hand, Stuart Hall.
- Full Text:
- Date Issued: 2010
An investigation of the impact of the funding strategy of government on the sustainability of NGO work in them health sector: a case of the Eastern Cape province in South Africa
- Authors: Vhutuzah,Miriam.
- Date: 2010
- Subjects: Non-governmental organization , Health services administration , Sustainable development
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25926 , vital:64564
- Description: Under the apartheid regime the blacks suffered from social exclusion whereby the state sought to provide social services to the white community. Blacks used NGOs to fight the apartheid regime after the banning of political parties by the government. The government tried to quell the social unrest by instituting restrictive legislation to the NGOs. However, the NGOs managed to survive by getting funds from external sources that were anti-apartheid and the funding was camouflaged. While the blacks used the NGOs as frontiers to fight apartheid, they also provided services like health, education and others. The white NGOs managed to thrive unabated. After the fall of apartheid, many leaders left the NGO sector to join the government. It has been of great concern to note that after the apartheid, NGOs failed to assume the position that they used to possess during apartheid. The major objective of the study was to assess the funding strategy of the government in relation to the sustainability of the work of NGOs. This was achieved through analysing the guiding principles and prerequisites of the government in terms of procedures of disbursing funds to NGOs and how this affects NGO operations. The research made use of one major approach in the social sciences which is qualitative. The use of a qualitative technique reflects an attempt to ensure an in-depth understanding of the phenomenon in question. This is what was needed by the question under study, to understand the institutional environment of NGOs by looking into their operational experiences and holding in-depth interviews with NGOs and government officials in order to understand their views about the existing funding strategy. The study found out that the pre-requisites of the funding organisations can be met by NGOs which previously thrived under the apartheid government. Due to their more sophisticated nature, it is these types of NGOs that interface most effectively with the donor community and are major beneficiaries of the bulk of donor funding. It also discovered that the rural-based NGOs are not networked and only rely on government funding which is short-lived. Some of the well established NGOs manipulate the existing opportunities to pursue private interests. Moreover, donors are mainly interested in funding popular activities like AIDS but they target well established organisations. In view of the above findings, the study recommends that the pre-requisites for NGOs must be streamlined to the rural-based NGOs and communication from the government should be improved especially for the rural-based NGOs where forms of communication are limited. There is need to establish an independent body, mandated by the government to carry out NGO issues .The government should also introduce incentives to the donors that fund rural-based NGOs and also encourage donors to fund TB activities by introducing incentives. Moreover, there is need for the government to adopt institutional development principles which emphasises on internal organizational development by training NGO members in order to improve their skills. Externally, the institutional impediments like inherited legal instruments that were pro-apartheid should be addressed. Lastly, there is need for the government to engage NGOs in the policy making process. , Thesis (MSoc) -- Faculty of Management and Commerce , 2010
- Full Text:
- Date Issued: 2010
- Authors: Vhutuzah,Miriam.
- Date: 2010
- Subjects: Non-governmental organization , Health services administration , Sustainable development
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25926 , vital:64564
- Description: Under the apartheid regime the blacks suffered from social exclusion whereby the state sought to provide social services to the white community. Blacks used NGOs to fight the apartheid regime after the banning of political parties by the government. The government tried to quell the social unrest by instituting restrictive legislation to the NGOs. However, the NGOs managed to survive by getting funds from external sources that were anti-apartheid and the funding was camouflaged. While the blacks used the NGOs as frontiers to fight apartheid, they also provided services like health, education and others. The white NGOs managed to thrive unabated. After the fall of apartheid, many leaders left the NGO sector to join the government. It has been of great concern to note that after the apartheid, NGOs failed to assume the position that they used to possess during apartheid. The major objective of the study was to assess the funding strategy of the government in relation to the sustainability of the work of NGOs. This was achieved through analysing the guiding principles and prerequisites of the government in terms of procedures of disbursing funds to NGOs and how this affects NGO operations. The research made use of one major approach in the social sciences which is qualitative. The use of a qualitative technique reflects an attempt to ensure an in-depth understanding of the phenomenon in question. This is what was needed by the question under study, to understand the institutional environment of NGOs by looking into their operational experiences and holding in-depth interviews with NGOs and government officials in order to understand their views about the existing funding strategy. The study found out that the pre-requisites of the funding organisations can be met by NGOs which previously thrived under the apartheid government. Due to their more sophisticated nature, it is these types of NGOs that interface most effectively with the donor community and are major beneficiaries of the bulk of donor funding. It also discovered that the rural-based NGOs are not networked and only rely on government funding which is short-lived. Some of the well established NGOs manipulate the existing opportunities to pursue private interests. Moreover, donors are mainly interested in funding popular activities like AIDS but they target well established organisations. In view of the above findings, the study recommends that the pre-requisites for NGOs must be streamlined to the rural-based NGOs and communication from the government should be improved especially for the rural-based NGOs where forms of communication are limited. There is need to establish an independent body, mandated by the government to carry out NGO issues .The government should also introduce incentives to the donors that fund rural-based NGOs and also encourage donors to fund TB activities by introducing incentives. Moreover, there is need for the government to adopt institutional development principles which emphasises on internal organizational development by training NGO members in order to improve their skills. Externally, the institutional impediments like inherited legal instruments that were pro-apartheid should be addressed. Lastly, there is need for the government to engage NGOs in the policy making process. , Thesis (MSoc) -- Faculty of Management and Commerce , 2010
- Full Text:
- Date Issued: 2010
An investigation of the informational efficiency of the Johannesburg Stock Exchange with respect to monetary policy (2000-2009)
- Authors: Samkange, Edgar
- Date: 2010
- Subjects: Holding companies -- South Africa , Stock exchanges -- South Africa , Monetary policy -- South Africa -- History
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11456 , http://hdl.handle.net/10353/324 , Holding companies -- South Africa , Stock exchanges -- South Africa , Monetary policy -- South Africa -- History
- Description: This study aims to investigate the informational efficiency of the Johannesburg Stock Exchange with respect to monetary policy. Multivariate co-integration, Granger causality, vector error correction model, impulse response function analysis and variance decomposition analysis are employed to determine the semi-strong form efficiency in South African equity market. Monthly data of Johannesburg Stock Exchange index, money supply (M1 & M2), short term interest rate, inflation, rand/dollar exchange rate, London Stock Exchange index (FSTE100) and GDP from 2000-2009 are the variables of interest.Weak form efficiency is examined using unit root tests. The results of this study show evidence of weak form efficiency of the JSE using the Augmented-Dickey Fuller and Philip-Perron unit root tests. The results reject the hypothesis that the JSE is semi-strong and have important implications for government policy, regulatory authorities and participants in the South African stock market.
- Full Text:
- Date Issued: 2010
- Authors: Samkange, Edgar
- Date: 2010
- Subjects: Holding companies -- South Africa , Stock exchanges -- South Africa , Monetary policy -- South Africa -- History
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11456 , http://hdl.handle.net/10353/324 , Holding companies -- South Africa , Stock exchanges -- South Africa , Monetary policy -- South Africa -- History
- Description: This study aims to investigate the informational efficiency of the Johannesburg Stock Exchange with respect to monetary policy. Multivariate co-integration, Granger causality, vector error correction model, impulse response function analysis and variance decomposition analysis are employed to determine the semi-strong form efficiency in South African equity market. Monthly data of Johannesburg Stock Exchange index, money supply (M1 & M2), short term interest rate, inflation, rand/dollar exchange rate, London Stock Exchange index (FSTE100) and GDP from 2000-2009 are the variables of interest.Weak form efficiency is examined using unit root tests. The results of this study show evidence of weak form efficiency of the JSE using the Augmented-Dickey Fuller and Philip-Perron unit root tests. The results reject the hypothesis that the JSE is semi-strong and have important implications for government policy, regulatory authorities and participants in the South African stock market.
- Full Text:
- Date Issued: 2010
An investigation of the middle managers' attitude towards organizational change: a case of the automotive industry
- Authors: Harunavamwe, Martha
- Date: 2010
- Subjects: Organizational change -- Management , Organizational change -- South Africa , Attitude (Psychology) , Motor industry -- South Africa -- Management , Executives -- Training of -- South Africa
- Language: English
- Type: Thesis , Masters , MCom (Industrial Psychology)
- Identifier: vital:11545 , http://hdl.handle.net/10353/d1001211 , Organizational change -- Management , Organizational change -- South Africa , Attitude (Psychology) , Motor industry -- South Africa -- Management , Executives -- Training of -- South Africa
- Description: The present study investigated the attitudes of middle managers towards organisational change within the automotive industry in South Africa. As a result of global recession, the automotive industry has been going through a series of changes but at a very slower pace. An empirical investigation was undertaken using a sample of seventy two (72) middle managers drawn using the cluster sampling technique. An organisational change attitude questionnaire adjusted to suit the automotive industry environment was employed to collect data. The findings of the study indicated that middle managers have positive attitudes towards technological change (59%), Innovative Change (84%) and Total Quality Management (65%) However, middle managers indicated that they have negative attitudes towards re-organisation. There was moderate significant relationship between factors influencing attitudes (administration, participation, communication and the threats and benefits) and the attitudes portrayed. Factors such as administration of the change process, threats and benefits of the outcomes as well as opportunity for personal growth were found to be highly influential to middle managers attitudes towards change. In all cases, demographic variables such as gender, age and experience played a significant role in the views of middle managers towards organisational change. Key words: Attitudes, organisational change, middle managers, factors influencing attitudes and automotive industry.
- Full Text:
- Date Issued: 2010
- Authors: Harunavamwe, Martha
- Date: 2010
- Subjects: Organizational change -- Management , Organizational change -- South Africa , Attitude (Psychology) , Motor industry -- South Africa -- Management , Executives -- Training of -- South Africa
- Language: English
- Type: Thesis , Masters , MCom (Industrial Psychology)
- Identifier: vital:11545 , http://hdl.handle.net/10353/d1001211 , Organizational change -- Management , Organizational change -- South Africa , Attitude (Psychology) , Motor industry -- South Africa -- Management , Executives -- Training of -- South Africa
- Description: The present study investigated the attitudes of middle managers towards organisational change within the automotive industry in South Africa. As a result of global recession, the automotive industry has been going through a series of changes but at a very slower pace. An empirical investigation was undertaken using a sample of seventy two (72) middle managers drawn using the cluster sampling technique. An organisational change attitude questionnaire adjusted to suit the automotive industry environment was employed to collect data. The findings of the study indicated that middle managers have positive attitudes towards technological change (59%), Innovative Change (84%) and Total Quality Management (65%) However, middle managers indicated that they have negative attitudes towards re-organisation. There was moderate significant relationship between factors influencing attitudes (administration, participation, communication and the threats and benefits) and the attitudes portrayed. Factors such as administration of the change process, threats and benefits of the outcomes as well as opportunity for personal growth were found to be highly influential to middle managers attitudes towards change. In all cases, demographic variables such as gender, age and experience played a significant role in the views of middle managers towards organisational change. Key words: Attitudes, organisational change, middle managers, factors influencing attitudes and automotive industry.
- Full Text:
- Date Issued: 2010
An investigation of the role of principals in promoting computer usage in selected Namibian schools
- Authors: Katulo, Mighty Masiku
- Date: 2010
- Subjects: Computers -- Study and teaching -- Namibia Educational technology -- Namibia Information technology -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1658 , http://hdl.handle.net/10962/d1003541
- Description: Globalisation and technology change have created a new global economy fuelled by information and driven by knowledge. Information and Communication Technologies (ICT) have been touted as potential powerful tools for enabling educational change and reform. Namibia is among those countries that have adopted the use of ICTs as a vehicle for change. This thesis explores the role of school principals in promoting and managing computer usage in selected schools in Namibia. The study was conducted at four schools in the Caprivi Region. The study employed a qualitative case study to collect and analyse data. A total of four school principals and four computer coordinators were interviewed, and responded to questions pertaining to the role of principals in the following areas: acquiring ICT equipment; providing access to the computer labs; promoting the use of computers; maintaining computers; capacity-building of teachers, and addressing challenges that could prevent computer usage. Two focus group interviews were also conducted at two schools, to find out what they perceived to be the role of school principals in supporting and ensuring the effective use of computers in schools. The findings on acquisition of computers reveal that principals were often the initiators of the acquisition process. Ministerial deployment is the most common form of acquisition, followed by the use of the school’s development fund to purchase administrative computers. Only one of the participating schools did not acquire its computers through Ministerial deployment. Some schools were more resourced than others. Availability and maintenance of equipment depended on the kind of school (advantaged or disadvantaged) and the way the computers were acquired rather than on the role of the principal. Schools that acquired their computers through the ministerial deployment received satisfactory technical support from the ministry while schools that acquired their computers through other sources had to rely more heavily on the principal to pro-actively seek support. School principals that demonstrated the qualities of transformational leadership promoted the usage of computers by taking part in training offered to teachers and encouraged teachers on different platforms to make use of computers. The study also found that schools in which principals actively supported and promoted the use of computers were successful in the usage of the computer labs, while in schools where principals left the running of the computer lab to an individual teacher, the usage was minimal. It was found that a number of challenges are hampering the usage. These include lack of internet connectivity, qualified personnel to cascade training, and minimum infrastructure. The study recommends that school principals should adopt trategies that encourage teachers to use computers in their daily routines. It also makes suggestions for further research on the impact of school culture on ICT integration.
- Full Text:
- Date Issued: 2010
- Authors: Katulo, Mighty Masiku
- Date: 2010
- Subjects: Computers -- Study and teaching -- Namibia Educational technology -- Namibia Information technology -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1658 , http://hdl.handle.net/10962/d1003541
- Description: Globalisation and technology change have created a new global economy fuelled by information and driven by knowledge. Information and Communication Technologies (ICT) have been touted as potential powerful tools for enabling educational change and reform. Namibia is among those countries that have adopted the use of ICTs as a vehicle for change. This thesis explores the role of school principals in promoting and managing computer usage in selected schools in Namibia. The study was conducted at four schools in the Caprivi Region. The study employed a qualitative case study to collect and analyse data. A total of four school principals and four computer coordinators were interviewed, and responded to questions pertaining to the role of principals in the following areas: acquiring ICT equipment; providing access to the computer labs; promoting the use of computers; maintaining computers; capacity-building of teachers, and addressing challenges that could prevent computer usage. Two focus group interviews were also conducted at two schools, to find out what they perceived to be the role of school principals in supporting and ensuring the effective use of computers in schools. The findings on acquisition of computers reveal that principals were often the initiators of the acquisition process. Ministerial deployment is the most common form of acquisition, followed by the use of the school’s development fund to purchase administrative computers. Only one of the participating schools did not acquire its computers through Ministerial deployment. Some schools were more resourced than others. Availability and maintenance of equipment depended on the kind of school (advantaged or disadvantaged) and the way the computers were acquired rather than on the role of the principal. Schools that acquired their computers through the ministerial deployment received satisfactory technical support from the ministry while schools that acquired their computers through other sources had to rely more heavily on the principal to pro-actively seek support. School principals that demonstrated the qualities of transformational leadership promoted the usage of computers by taking part in training offered to teachers and encouraged teachers on different platforms to make use of computers. The study also found that schools in which principals actively supported and promoted the use of computers were successful in the usage of the computer labs, while in schools where principals left the running of the computer lab to an individual teacher, the usage was minimal. It was found that a number of challenges are hampering the usage. These include lack of internet connectivity, qualified personnel to cascade training, and minimum infrastructure. The study recommends that school principals should adopt trategies that encourage teachers to use computers in their daily routines. It also makes suggestions for further research on the impact of school culture on ICT integration.
- Full Text:
- Date Issued: 2010
An investigation of the role of records management with specific reference to Amathole District Municipality
- Authors: Kanzi, Noluvuyo
- Date: 2010
- Subjects: Records -- Management -- Amathole District Municipality , Information resources management -- Amathole District Municipality
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8205 , http://hdl.handle.net/10948/1169 , Records -- Management -- Amathole District Municipality , Information resources management -- Amathole District Municipality
- Description: The purpose of this study was to investigate the role played by records management in an organisation. The primary question that was explored was whether the management of records receives the attention it deserves at the Amathole District Municipality. In order to achieve the research objectives, an in-depth literature study was undertaken. A survey was also conducted to examine the current records management practices at ADM and the data was collected by means of self-administered questionnaires. The literature study proved the hypothesis to be correct, which stated that effective records management plays a significant role in the effective administration of an organization. The empirical study revealed that the records management function is not receiving the attention it deserves at ADM. Even though participants acknowledged the importance of records management in the decision-making process, strategic planning process (Integrated Development Plan), the realisation of the Batho Pele Principles and the overall performance of ADM, it was evident that ignorance was displayed with regard to the management of records. It has been discovered that Amathole District Municipality has a good Records Management Policy, Procedure manual and File Plan, but adherence to these policies should be continuously monitored. Regular training has been identified as one of the areas on which ADM should apply its focus to ensure sound records management. Recommendations were made within the context of empirical survey findings and the regulatory framework for records management. To improve the current records management practices at ADM, it has been recommended that the records management function be incorporated into the organisation-wide strategic plans and that records management forms part of the key performance areas of senior managers.
- Full Text:
- Date Issued: 2010
- Authors: Kanzi, Noluvuyo
- Date: 2010
- Subjects: Records -- Management -- Amathole District Municipality , Information resources management -- Amathole District Municipality
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8205 , http://hdl.handle.net/10948/1169 , Records -- Management -- Amathole District Municipality , Information resources management -- Amathole District Municipality
- Description: The purpose of this study was to investigate the role played by records management in an organisation. The primary question that was explored was whether the management of records receives the attention it deserves at the Amathole District Municipality. In order to achieve the research objectives, an in-depth literature study was undertaken. A survey was also conducted to examine the current records management practices at ADM and the data was collected by means of self-administered questionnaires. The literature study proved the hypothesis to be correct, which stated that effective records management plays a significant role in the effective administration of an organization. The empirical study revealed that the records management function is not receiving the attention it deserves at ADM. Even though participants acknowledged the importance of records management in the decision-making process, strategic planning process (Integrated Development Plan), the realisation of the Batho Pele Principles and the overall performance of ADM, it was evident that ignorance was displayed with regard to the management of records. It has been discovered that Amathole District Municipality has a good Records Management Policy, Procedure manual and File Plan, but adherence to these policies should be continuously monitored. Regular training has been identified as one of the areas on which ADM should apply its focus to ensure sound records management. Recommendations were made within the context of empirical survey findings and the regulatory framework for records management. To improve the current records management practices at ADM, it has been recommended that the records management function be incorporated into the organisation-wide strategic plans and that records management forms part of the key performance areas of senior managers.
- Full Text:
- Date Issued: 2010
An investigation of the role of selected ward committees in enhancing basic service delivery: the case of Buffalo City Municipality
- Jakatyana, Xolile Christopher
- Authors: Jakatyana, Xolile Christopher
- Date: 2010
- Subjects: Buffalo City (South Africa) , Local government -- South Africa -- Buffalo City -- Citizen participation , Municipal government -- South Africa -- Buffalo City -- Citizen participation , Municipal services -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8201 , http://hdl.handle.net/10948/1256 , Buffalo City (South Africa) , Local government -- South Africa -- Buffalo City -- Citizen participation , Municipal government -- South Africa -- Buffalo City -- Citizen participation , Municipal services -- South Africa -- Eastern Cape
- Description: This study investigated the role of selected ward committees 29 and 32 of Nompumelelo and Tsholomnqa respectively in the Buffalo City Municipality (BCM) in enhancing basic service delivery. In terms of the White Paper on Local Government (1998:4), developmental local government promotes a system that centres on working with local communities to find sustainable ways to meet their needs and improve the quality of their lives. The study on that basis examines the nature and extent to which wards 29 and 32 committees enhanced basic service delivery within BCM. The study is premised on the assumptions that: The involvement of party-elected Councillors in ward committees inhibits members of ward committees from playing an active role in their communities; Ward committees are not clearly communicating municipality programmes to their communities; BCM is biased in favour of urban wards in service delivery; If the committees of wards 29 and 32 were given more powers to play a much wider role in providing leadership and make decisions in their communities (being elevated from an advisory role to ward management structures), they would make an impact in enhancing basic service delivery; and, With additional decision-making powers ward committees could play a more effective role in local government matters. The perceived slow pace of service delivery by municipalities has resulted in growing impatience and dissatisfaction, in particular among poor communities. This has been demonstrated by the spontaneous protests and unrests directed at municipalities that have been taking place nationally since 2003. The uprisings explain two aspects, namely local government is considered by communities to be the delivery arm of government in South Africa and poor communities feel betrayed because their active participation in government-provided spaces for participation such as municipal elections, ward committees and IDPs did not yield the result of promised development (Theron, 2008:36). iv The study employed the qualitative research design using an interview survey as a method of data collection and the reviewing of existing study material and documents to test the validity of the afore-mentioned assumptions. Lastly, with the aim of assisting BCM in nurturing the potential of ward committees operating in its area of jurisdiction, the following recommendations based on the findings of the study are made: BCM considers subjecting ward committees to structured formal and accredited training; BCM delivers services in a legally compliant manner; BCM delegates sufficient powers to ward committees; Ward committees be trained together with officials that drive the CBP process when BCM starts implementing the process; and, BCM provides support to ward committees.
- Full Text:
- Date Issued: 2010
- Authors: Jakatyana, Xolile Christopher
- Date: 2010
- Subjects: Buffalo City (South Africa) , Local government -- South Africa -- Buffalo City -- Citizen participation , Municipal government -- South Africa -- Buffalo City -- Citizen participation , Municipal services -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8201 , http://hdl.handle.net/10948/1256 , Buffalo City (South Africa) , Local government -- South Africa -- Buffalo City -- Citizen participation , Municipal government -- South Africa -- Buffalo City -- Citizen participation , Municipal services -- South Africa -- Eastern Cape
- Description: This study investigated the role of selected ward committees 29 and 32 of Nompumelelo and Tsholomnqa respectively in the Buffalo City Municipality (BCM) in enhancing basic service delivery. In terms of the White Paper on Local Government (1998:4), developmental local government promotes a system that centres on working with local communities to find sustainable ways to meet their needs and improve the quality of their lives. The study on that basis examines the nature and extent to which wards 29 and 32 committees enhanced basic service delivery within BCM. The study is premised on the assumptions that: The involvement of party-elected Councillors in ward committees inhibits members of ward committees from playing an active role in their communities; Ward committees are not clearly communicating municipality programmes to their communities; BCM is biased in favour of urban wards in service delivery; If the committees of wards 29 and 32 were given more powers to play a much wider role in providing leadership and make decisions in their communities (being elevated from an advisory role to ward management structures), they would make an impact in enhancing basic service delivery; and, With additional decision-making powers ward committees could play a more effective role in local government matters. The perceived slow pace of service delivery by municipalities has resulted in growing impatience and dissatisfaction, in particular among poor communities. This has been demonstrated by the spontaneous protests and unrests directed at municipalities that have been taking place nationally since 2003. The uprisings explain two aspects, namely local government is considered by communities to be the delivery arm of government in South Africa and poor communities feel betrayed because their active participation in government-provided spaces for participation such as municipal elections, ward committees and IDPs did not yield the result of promised development (Theron, 2008:36). iv The study employed the qualitative research design using an interview survey as a method of data collection and the reviewing of existing study material and documents to test the validity of the afore-mentioned assumptions. Lastly, with the aim of assisting BCM in nurturing the potential of ward committees operating in its area of jurisdiction, the following recommendations based on the findings of the study are made: BCM considers subjecting ward committees to structured formal and accredited training; BCM delivers services in a legally compliant manner; BCM delegates sufficient powers to ward committees; Ward committees be trained together with officials that drive the CBP process when BCM starts implementing the process; and, BCM provides support to ward committees.
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- Date Issued: 2010