A phenomenological case study of a lecturer's understanding of himself as an assessor
- Authors: Grant, Rose
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6087 , http://hdl.handle.net/10962/d1008582
- Description: Based on the findings of research conducted as part of a doctoral study aimed at obtaining an understanding of what it means to be an assessor in higher education, this paper outlines the experience of an individual lecturer at a South African university and describes the meaning he makes of his practice as an assessor within the context of a changing understanding of the nature and purpose of higher education. Making a case for personal agency and innovation as critical qualities in the assessment endeavour, the researcher suggests that, in contrast to a view of education increasingly focused on standardization, accountability and outcomes, student assessment is essentially a human encounter in which the humanity and emotions of both lecturer and student need to be acknowledged.
- Full Text:
- Date Issued: 2008
- Authors: Grant, Rose
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6087 , http://hdl.handle.net/10962/d1008582
- Description: Based on the findings of research conducted as part of a doctoral study aimed at obtaining an understanding of what it means to be an assessor in higher education, this paper outlines the experience of an individual lecturer at a South African university and describes the meaning he makes of his practice as an assessor within the context of a changing understanding of the nature and purpose of higher education. Making a case for personal agency and innovation as critical qualities in the assessment endeavour, the researcher suggests that, in contrast to a view of education increasingly focused on standardization, accountability and outcomes, student assessment is essentially a human encounter in which the humanity and emotions of both lecturer and student need to be acknowledged.
- Full Text:
- Date Issued: 2008
A study of the conducivness of the culture at Freeworld Automotive Coatings to the implementation of lean maunfacturing techniques
- Authors: Gray, Alexander George
- Date: 2008
- Subjects: Corporate culture -- South Africa , Organizational behavior -- South Africa , Organizational change -- South Africa , Organizational effectiveness -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8719 , http://hdl.handle.net/10948/910 , Corporate culture -- South Africa , Organizational behavior -- South Africa , Organizational change -- South Africa , Organizational effectiveness -- South Africa
- Description: It is becoming increasingly important for companies to be responsive to global demands and in order to remain competitive, many companies are looking at lean manufacturing to help them achieve this. Lean manufacturing is however more than just a set of tools as it also requires a change in the organisational culture of the company involved. The creation of an organisation that has a culture of continuous improvement and achieving results through its various principles and philosophies is a main factor in Toyota’s Toyota Way Model. It was the aim of this research study to analyse and determine the factors relating to the impact of an organisation’s culture on the concepts of lean manufacturing based on the Toyota Way model. This was achieved by analysing how conducive the current organisational culture at Freeworld Automotive Coatings to the implementation of Lean Manufacturing principles? The method used for the research study was the questionnaire method using a lean culture assessment questionnaire that has been designed by the researcher that was aligned to the principles important to the Toyota Way model. It can be concluded from the research findings of this study indicates that the existing organisational culture of Freeworld Automotive coatings is relatively conducive to the implementation of lean manufacturing principles within the company.
- Full Text:
- Date Issued: 2008
- Authors: Gray, Alexander George
- Date: 2008
- Subjects: Corporate culture -- South Africa , Organizational behavior -- South Africa , Organizational change -- South Africa , Organizational effectiveness -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8719 , http://hdl.handle.net/10948/910 , Corporate culture -- South Africa , Organizational behavior -- South Africa , Organizational change -- South Africa , Organizational effectiveness -- South Africa
- Description: It is becoming increasingly important for companies to be responsive to global demands and in order to remain competitive, many companies are looking at lean manufacturing to help them achieve this. Lean manufacturing is however more than just a set of tools as it also requires a change in the organisational culture of the company involved. The creation of an organisation that has a culture of continuous improvement and achieving results through its various principles and philosophies is a main factor in Toyota’s Toyota Way Model. It was the aim of this research study to analyse and determine the factors relating to the impact of an organisation’s culture on the concepts of lean manufacturing based on the Toyota Way model. This was achieved by analysing how conducive the current organisational culture at Freeworld Automotive Coatings to the implementation of Lean Manufacturing principles? The method used for the research study was the questionnaire method using a lean culture assessment questionnaire that has been designed by the researcher that was aligned to the principles important to the Toyota Way model. It can be concluded from the research findings of this study indicates that the existing organisational culture of Freeworld Automotive coatings is relatively conducive to the implementation of lean manufacturing principles within the company.
- Full Text:
- Date Issued: 2008
A book history study of Michael Radford's filmic production William Shakespeare's The Merchant of Venice
- Green, Bryony Rose Humphries
- Authors: Green, Bryony Rose Humphries
- Date: 2008
- Subjects: Shakespeare, William, 1564-1616 -- Film adaptations Shakespeare, William, 1564-1616. Merchant of Venice Merchant of Venice (Motion picture: 2004) English drama -- Film and video adaptations Film adaptations -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2197 , http://hdl.handle.net/10962/d1002239
- Description: Falling within the ambit of the Department of English Literature but with interdisciplinary scope and method, the research undertaken in this thesis examines Michael Radford’s 2004 film production William Shakespeare’s The Merchant of Venice using the Book History approach to textual study. Previously applied almost exclusively to the study of books, Book History examines the text in terms of both its medium and its content, bringing together bibliographical, literary and historical approaches to the study of books within one theoretical paradigm. My research extends this interdisciplinary approach into the filmic medium by using a modified version of Robert Darnton’s “communication circuit” to examine the process of transmission of this Shakespearean film adaptation from creation to reception. The research is not intended as a complete Book History study and even less as a comprehensive investigation of William Shakespeare’s The Merchant of Venice. Rather, it uses a Shakespearean case study to bring together the two previously discrete fields of Book History and filmic investigation. Drawing on film studies, literary concepts, cultural and media studies, modern management theory as well as reception theories and with the use of both quantitative and qualitative data, I show Book History to be an eminently useful and constructive approach to the study of film.
- Full Text:
- Date Issued: 2008
- Authors: Green, Bryony Rose Humphries
- Date: 2008
- Subjects: Shakespeare, William, 1564-1616 -- Film adaptations Shakespeare, William, 1564-1616. Merchant of Venice Merchant of Venice (Motion picture: 2004) English drama -- Film and video adaptations Film adaptations -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2197 , http://hdl.handle.net/10962/d1002239
- Description: Falling within the ambit of the Department of English Literature but with interdisciplinary scope and method, the research undertaken in this thesis examines Michael Radford’s 2004 film production William Shakespeare’s The Merchant of Venice using the Book History approach to textual study. Previously applied almost exclusively to the study of books, Book History examines the text in terms of both its medium and its content, bringing together bibliographical, literary and historical approaches to the study of books within one theoretical paradigm. My research extends this interdisciplinary approach into the filmic medium by using a modified version of Robert Darnton’s “communication circuit” to examine the process of transmission of this Shakespearean film adaptation from creation to reception. The research is not intended as a complete Book History study and even less as a comprehensive investigation of William Shakespeare’s The Merchant of Venice. Rather, it uses a Shakespearean case study to bring together the two previously discrete fields of Book History and filmic investigation. Drawing on film studies, literary concepts, cultural and media studies, modern management theory as well as reception theories and with the use of both quantitative and qualitative data, I show Book History to be an eminently useful and constructive approach to the study of film.
- Full Text:
- Date Issued: 2008
An analysis of the use of limited real rights in tax planning
- Authors: Green, Christopher Terrence
- Date: 2008
- Subjects: Tax planning , Income tax -- Law and legislation -- South Africa , Limited liability
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8958 , http://hdl.handle.net/10948/809 , Tax planning , Income tax -- Law and legislation -- South Africa , Limited liability
- Description: The aim of this treatise is to provide an analysis of the tax implications of making use of limited real rights in tax planning. In order to understand the tax implications of making use of limited real rights it is necessary to understand the nature and legal form of these rights. The importance of this understanding lies in the determination of the tax legislation applicable to the right in question, and the subsequent tax implications. The next step in working through an analysis of the tax implications of making use of limited real rights is therefore to define the scope of applicable legislation. This required an analysis of the scoping provisions of our tax legislation. Once the scope of applicable legislation had been defined, it was then possible to move onto an analysis of the application of the legislation identified to the various “stages” of limited real rights. The conclusion from this analysis is that the tax implications of making use of limited real rights are spread fairly broadly across several different pieces of legislation, and need to be carefully and fully considered when making a decision to make use of limited real rights in a tax planning strategy. The conclusion on the analysis of certain selected tax planning strategies that make use of limited real rights is that it is possible to make fairly substantial cash flow savings when deciding to implement a particular strategy which makes use of limited real rights. But, that use of these strategies is not without risk. For example, SARS may examine a particular strategy in terms of the “new” GAAR. The financial implications of the successful application of the GAAR may be disastrous to the taxpayer, and the tax planner will need to have considered and advised on the possibility of such a challenge from SARS. In addition, in some of the strategies, there are risks associated with the anticipated life expectancy of parties to the tax plan being shorter than anticipated. The conclusion is that the use of limited real rights in tax planning can be effective and provide savings, but that the use of such a strategy requires, inter alia, a very careful consideration of the interaction and application of our tax legislation to the strategy.
- Full Text:
- Date Issued: 2008
- Authors: Green, Christopher Terrence
- Date: 2008
- Subjects: Tax planning , Income tax -- Law and legislation -- South Africa , Limited liability
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8958 , http://hdl.handle.net/10948/809 , Tax planning , Income tax -- Law and legislation -- South Africa , Limited liability
- Description: The aim of this treatise is to provide an analysis of the tax implications of making use of limited real rights in tax planning. In order to understand the tax implications of making use of limited real rights it is necessary to understand the nature and legal form of these rights. The importance of this understanding lies in the determination of the tax legislation applicable to the right in question, and the subsequent tax implications. The next step in working through an analysis of the tax implications of making use of limited real rights is therefore to define the scope of applicable legislation. This required an analysis of the scoping provisions of our tax legislation. Once the scope of applicable legislation had been defined, it was then possible to move onto an analysis of the application of the legislation identified to the various “stages” of limited real rights. The conclusion from this analysis is that the tax implications of making use of limited real rights are spread fairly broadly across several different pieces of legislation, and need to be carefully and fully considered when making a decision to make use of limited real rights in a tax planning strategy. The conclusion on the analysis of certain selected tax planning strategies that make use of limited real rights is that it is possible to make fairly substantial cash flow savings when deciding to implement a particular strategy which makes use of limited real rights. But, that use of these strategies is not without risk. For example, SARS may examine a particular strategy in terms of the “new” GAAR. The financial implications of the successful application of the GAAR may be disastrous to the taxpayer, and the tax planner will need to have considered and advised on the possibility of such a challenge from SARS. In addition, in some of the strategies, there are risks associated with the anticipated life expectancy of parties to the tax plan being shorter than anticipated. The conclusion is that the use of limited real rights in tax planning can be effective and provide savings, but that the use of such a strategy requires, inter alia, a very careful consideration of the interaction and application of our tax legislation to the strategy.
- Full Text:
- Date Issued: 2008
Rhodes University during the segregation and apartheid eras, 1933 to 1990
- Authors: Greyling, Sean Andrew
- Date: 2008
- Subjects: Rhodes University -- History Post-apartheid era -- South Africa -- History College students -- South Africa -- Political activity South Africa -- Race relations -- History -- 20th century South Africa -- Politics and government -- 20th century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2545 , http://hdl.handle.net/10962/d1002397
- Description: In 2004 Rhodes University celebrated its centenary. At a Critical Tradition Colloquium opportunity was given to explore the university’s past. In particular, its liberal image was questioned and its role during apartheid brought under scrutiny. This thesis investigates the questions raised at the Colloquium. It aims to cover the whole apartheid era in one coherent narrative by addressing the history of Rhodes during that era and how it handled issues of race and politics. It begins in 1933, when the first black student applied to Rhodes, and ends in 1990, when apartheid was drawing to a close.
- Full Text:
- Date Issued: 2008
- Authors: Greyling, Sean Andrew
- Date: 2008
- Subjects: Rhodes University -- History Post-apartheid era -- South Africa -- History College students -- South Africa -- Political activity South Africa -- Race relations -- History -- 20th century South Africa -- Politics and government -- 20th century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2545 , http://hdl.handle.net/10962/d1002397
- Description: In 2004 Rhodes University celebrated its centenary. At a Critical Tradition Colloquium opportunity was given to explore the university’s past. In particular, its liberal image was questioned and its role during apartheid brought under scrutiny. This thesis investigates the questions raised at the Colloquium. It aims to cover the whole apartheid era in one coherent narrative by addressing the history of Rhodes during that era and how it handled issues of race and politics. It begins in 1933, when the first black student applied to Rhodes, and ends in 1990, when apartheid was drawing to a close.
- Full Text:
- Date Issued: 2008
The impact of an HIV/AIDS module on the self-efficacy of teachers
- Gripper, Antoinette Bernadette
- Authors: Gripper, Antoinette Bernadette
- Date: 2008
- Subjects: AIDS (Disease) -- Education , AIDS (Disease) -- Study and teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9533 , http://hdl.handle.net/10948/737 , AIDS (Disease) -- Education , AIDS (Disease) -- Study and teaching
- Description: In response to the crisis created by the HIV and AIDS pandemic in this country, South African education departments are demanding that educators play a significant role in creating awareness amongst children and adults alike. This task is challenging for teachers who are already working under the pressure of demanding workloads. In order to achieve the intended outcome of AIDS awareness, training of highly efficacious teachers is required. The education module, PSED201, Issues in School and Society, offered as part of a BEd degree for in-service mathematics and science teachers at the Nelson Mandela Metropolitan University, provides one such training opportunity. This study investigates the impact of this module on the self-efficacy of 128 teachers with respect to their role as HIV and AIDS educators. Both quantitative and qualitative methods were used and data were collected by means of questionnaires and interviews. The results suggest that there has been an improvement in all four areas of teacher self-efficacy examined in this research. As such, it may be concluded that an important outcome of this intervention has been achieved. As highly efficacious teachers are more likely to influence the behaviour of their learners, the findings of this research should make a meaningful contribution to the debate around AIDS education in South African schools.
- Full Text:
- Date Issued: 2008
- Authors: Gripper, Antoinette Bernadette
- Date: 2008
- Subjects: AIDS (Disease) -- Education , AIDS (Disease) -- Study and teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9533 , http://hdl.handle.net/10948/737 , AIDS (Disease) -- Education , AIDS (Disease) -- Study and teaching
- Description: In response to the crisis created by the HIV and AIDS pandemic in this country, South African education departments are demanding that educators play a significant role in creating awareness amongst children and adults alike. This task is challenging for teachers who are already working under the pressure of demanding workloads. In order to achieve the intended outcome of AIDS awareness, training of highly efficacious teachers is required. The education module, PSED201, Issues in School and Society, offered as part of a BEd degree for in-service mathematics and science teachers at the Nelson Mandela Metropolitan University, provides one such training opportunity. This study investigates the impact of this module on the self-efficacy of 128 teachers with respect to their role as HIV and AIDS educators. Both quantitative and qualitative methods were used and data were collected by means of questionnaires and interviews. The results suggest that there has been an improvement in all four areas of teacher self-efficacy examined in this research. As such, it may be concluded that an important outcome of this intervention has been achieved. As highly efficacious teachers are more likely to influence the behaviour of their learners, the findings of this research should make a meaningful contribution to the debate around AIDS education in South African schools.
- Full Text:
- Date Issued: 2008
An investigation of the themes and techniques in L.L. Sebe's "Ucamngco" = Uphando ngemixholo nesimo sokubhala esisetyenziswe kwincwadi ke L.L. Sebe "Ucamngco"
- Authors: Grootboom, Zoleka Faith
- Date: 2008
- Subjects: Sebe, L. L. W. (Lennox L. W.) -- Criticism and interpretation , Xhosa fiction -- History and criticism
- Language: Xhosa
- Type: Thesis , Masters , MA
- Identifier: vital:8465 , http://hdl.handle.net/10948/781 , Sebe, L. L. W. (Lennox L. W.) -- Criticism and interpretation , Xhosa fiction -- History and criticism
- Full Text:
- Date Issued: 2008
- Authors: Grootboom, Zoleka Faith
- Date: 2008
- Subjects: Sebe, L. L. W. (Lennox L. W.) -- Criticism and interpretation , Xhosa fiction -- History and criticism
- Language: Xhosa
- Type: Thesis , Masters , MA
- Identifier: vital:8465 , http://hdl.handle.net/10948/781 , Sebe, L. L. W. (Lennox L. W.) -- Criticism and interpretation , Xhosa fiction -- History and criticism
- Full Text:
- Date Issued: 2008
An assessment of the companion modelling approach in a context of negotiating water allocation strategies : the case of the Kat River Valley, Eastern Cape, South Africa
- Authors: Gumede, Felicity Hlengiwe
- Date: 2008
- Subjects: Water supply -- South Africa -- Kat River Valley -- Management , Water resources development -- South Africa -- Kat River Valley , Integrated water development -- South Africa -- Kat River Valley
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4820 , http://hdl.handle.net/10962/d1005494 , Water supply -- South Africa -- Kat River Valley -- Management , Water resources development -- South Africa -- Kat River Valley , Integrated water development -- South Africa -- Kat River Valley
- Description: This Masters research took place in the Kat River Valley in the Eastern Cape, South Africa. The Kat River Valley is a semi-rural catchment that covers an area of approximately 1700km² and is characterized by a complicated history of dispossession and resettlement. Farming is the main activity that is practiced in the area. This includes the farming of citrus at a commercial scale, rangeland stock farming and small-scale vegetable farming. The economy of the catchment is enhanced mostly by commercial citrus farming, which consumes by far the largest amount of water in the river through irrigation. Water allocation is a burning issue among water users in the catchment and needs to be negotiated taking into consideration social, economic and environment impacts. The aim of this study is to describe, discuss and evaluate the Companion Modelling (ComMod) approach, which used a simulation model and a role-playing game related to the model in order to facilitate and develop negotiating skills as well as build capacity in decision-making amongst local stakeholders for water resource management in the Kat River Valley. The ComMod approach, developed by a group of Companion Modellers, is a community-based science approach that emerged in the 1990s. The ComMod approach is used in order to facilitate collective learning, negotiation and institutional innovation in dealing with resource management complexities faced by rural communities. Through ComMod, the model (KatAWARE) and its related role-playing game was developed by having the contact with local stakeholders. The information to feed the model and the role-playing game came from informal interviews, surveys, geographic information systems (GIS), workshops and focus groups. The use of workshops in the implementation of ComMod was a success. Results show that (1) new knowledge was acquired, which allowed stakeholders to have a broad understanding of a catchment system. (2) Awareness was created about complex systems and enabled stakeholders to see an individual action into to the broader system. (3) Strong interrelationships were fostered amongst different water users, which allowed stakeholders to share their view points. The ComMod process was however associated with a number of limitations, many of which resulted from the constraints that were imposed by the socio-economic background of the study area. Nevertheless, the outcome of the study shows that the ComMod process was useful in helping the Kat River Water Users Association (KRWUA) stakeholders develop negotiating skills regarding water allocation strategies for the development of the Catchment Management Plan.
- Full Text:
- Date Issued: 2008
- Authors: Gumede, Felicity Hlengiwe
- Date: 2008
- Subjects: Water supply -- South Africa -- Kat River Valley -- Management , Water resources development -- South Africa -- Kat River Valley , Integrated water development -- South Africa -- Kat River Valley
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4820 , http://hdl.handle.net/10962/d1005494 , Water supply -- South Africa -- Kat River Valley -- Management , Water resources development -- South Africa -- Kat River Valley , Integrated water development -- South Africa -- Kat River Valley
- Description: This Masters research took place in the Kat River Valley in the Eastern Cape, South Africa. The Kat River Valley is a semi-rural catchment that covers an area of approximately 1700km² and is characterized by a complicated history of dispossession and resettlement. Farming is the main activity that is practiced in the area. This includes the farming of citrus at a commercial scale, rangeland stock farming and small-scale vegetable farming. The economy of the catchment is enhanced mostly by commercial citrus farming, which consumes by far the largest amount of water in the river through irrigation. Water allocation is a burning issue among water users in the catchment and needs to be negotiated taking into consideration social, economic and environment impacts. The aim of this study is to describe, discuss and evaluate the Companion Modelling (ComMod) approach, which used a simulation model and a role-playing game related to the model in order to facilitate and develop negotiating skills as well as build capacity in decision-making amongst local stakeholders for water resource management in the Kat River Valley. The ComMod approach, developed by a group of Companion Modellers, is a community-based science approach that emerged in the 1990s. The ComMod approach is used in order to facilitate collective learning, negotiation and institutional innovation in dealing with resource management complexities faced by rural communities. Through ComMod, the model (KatAWARE) and its related role-playing game was developed by having the contact with local stakeholders. The information to feed the model and the role-playing game came from informal interviews, surveys, geographic information systems (GIS), workshops and focus groups. The use of workshops in the implementation of ComMod was a success. Results show that (1) new knowledge was acquired, which allowed stakeholders to have a broad understanding of a catchment system. (2) Awareness was created about complex systems and enabled stakeholders to see an individual action into to the broader system. (3) Strong interrelationships were fostered amongst different water users, which allowed stakeholders to share their view points. The ComMod process was however associated with a number of limitations, many of which resulted from the constraints that were imposed by the socio-economic background of the study area. Nevertheless, the outcome of the study shows that the ComMod process was useful in helping the Kat River Water Users Association (KRWUA) stakeholders develop negotiating skills regarding water allocation strategies for the development of the Catchment Management Plan.
- Full Text:
- Date Issued: 2008
The development of a putative microbial product for use in crop production
- Authors: Gumede, Halalisani
- Date: 2008
- Subjects: Agricultural productivity , Agriculture -- Economic aspects , Microbial products , Bacterial diseases of plants , Biological pest control agents , Lettuce -- Diseases and pests , Crops -- Nutrition , Bacillus (Bacteria) , Phytopathogenic microorganisms -- Control
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3945 , http://hdl.handle.net/10962/d1004004 , Agricultural productivity , Agriculture -- Economic aspects , Microbial products , Bacterial diseases of plants , Biological pest control agents , Lettuce -- Diseases and pests , Crops -- Nutrition , Bacillus (Bacteria) , Phytopathogenic microorganisms -- Control
- Description: The challenges faced by the agricultural sector especially around improving production yields using environmentally friendly solutions have received market attention. Biological intervention can range from application of biological products to enhance the nutritional value of crops or to control plant pathogens. Biostart, a biological product that demonstrated growth enhancement when applied in lettuce crops is currently in the market. The product is comprised of a consortium of bacterial isolates (Bacillus licheniformis, Brevibacillus laterosporus and Bacillus laterosporus) but the contribution of the individual isolates to growth enhancement had not been elucidated. Green house experiments on lettuce seedlings with individual and mixed treatments were commissioned to determine such contribution. There was either no or marginal growth enhancement observed in the experiments. The results showed that the product was effective as a consortium and not as individual isolates. Further isolation and screening for potential Bacilli with antifungal properties was undertaken. An isolate identified as Bacillus subtilis that demonstrated inhibition against a wide spectrum of fungi, and especially the phytopathogenic Verticillium dahliae and Fusarium oxysporum, was successfully identified. The isolate was cryo-preserved and cultivated to significant levels at bench scale. A characterized comparison of different putative products with known systematic fungicide showed potential application even of heat treated products. The product showed control V. dahliae when tested in green houses with potatoes and tomatoes as test crops. This isolate has been targeted for further development as a biological control product.
- Full Text:
- Date Issued: 2008
- Authors: Gumede, Halalisani
- Date: 2008
- Subjects: Agricultural productivity , Agriculture -- Economic aspects , Microbial products , Bacterial diseases of plants , Biological pest control agents , Lettuce -- Diseases and pests , Crops -- Nutrition , Bacillus (Bacteria) , Phytopathogenic microorganisms -- Control
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3945 , http://hdl.handle.net/10962/d1004004 , Agricultural productivity , Agriculture -- Economic aspects , Microbial products , Bacterial diseases of plants , Biological pest control agents , Lettuce -- Diseases and pests , Crops -- Nutrition , Bacillus (Bacteria) , Phytopathogenic microorganisms -- Control
- Description: The challenges faced by the agricultural sector especially around improving production yields using environmentally friendly solutions have received market attention. Biological intervention can range from application of biological products to enhance the nutritional value of crops or to control plant pathogens. Biostart, a biological product that demonstrated growth enhancement when applied in lettuce crops is currently in the market. The product is comprised of a consortium of bacterial isolates (Bacillus licheniformis, Brevibacillus laterosporus and Bacillus laterosporus) but the contribution of the individual isolates to growth enhancement had not been elucidated. Green house experiments on lettuce seedlings with individual and mixed treatments were commissioned to determine such contribution. There was either no or marginal growth enhancement observed in the experiments. The results showed that the product was effective as a consortium and not as individual isolates. Further isolation and screening for potential Bacilli with antifungal properties was undertaken. An isolate identified as Bacillus subtilis that demonstrated inhibition against a wide spectrum of fungi, and especially the phytopathogenic Verticillium dahliae and Fusarium oxysporum, was successfully identified. The isolate was cryo-preserved and cultivated to significant levels at bench scale. A characterized comparison of different putative products with known systematic fungicide showed potential application even of heat treated products. The product showed control V. dahliae when tested in green houses with potatoes and tomatoes as test crops. This isolate has been targeted for further development as a biological control product.
- Full Text:
- Date Issued: 2008
Retention of medical doctors in the public health sector: a case study of the Port Elizabeth Hospital complex
- Authors: Guvava, Dorothy Dorica
- Date: 2008
- Subjects: Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8221 , http://hdl.handle.net/10948/976 , Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Description: The Port Elizabeth (PE) hospital complex is one of the public hospital groups in South Africa facing a critical shortage of medical practitioners, with reference to doctors in particular. In the quest of finding how to retain doctors in the hospital complex, the aims of this research were to survey doctors’ career intentions; to investigate factors that could be contributing to these career intentions so as to uncover some of the reasons why doctors are leaving the public sector; and to identify effective ways in which the government and hospitals might improve retention by pointing out areas that need improvement. The factors that influence doctors’ career intention included income, work conditions, risk of contracting infection, risk of injury at work, hours of work, work load, work related stress, paid leave days, resources, personal growth and development opportunities, ongoing training opportunities, advancement and promotion opportunities, relation with co-workers, relations with supervisor/superiors, and sense of meaning. Findings revealed that even though the tendency to leave’ group (43%) was smaller than the ‘tendency to stay’ (57%), the majority (85%) of those who intended to leave were younger doctors. Despite some significant differences in responses between the two groups, results revealed that both groups were dissatisfied with almost all conditions of work apart from relationships with supervisors and co-workers. To a large extent, both groups revealed that work conditions are better in the private hospitals than in their current hospitals. viii The fact that some doctors could stay in the public hospital sector despite intense dissatisfaction with conditions of work, and despite the perception that that there are better options in the private hospitals could be attributed to the fact that most of these doctors are older and are at their retirement stage . Adding to this is that most of these doctors, who indicated willingness to say, scored high in sense of meaning as a factor influencing their career intention. This research was based on the assumption that there was no retention strategy put in place to solve the problems facing PE hospital complex. However, during this research a strategy was being developed and implemented by the Eastern Cape Department of Health. Therefore, evaluation and recommendations of the strategy are provided in the conclusions of the study. These recommendations relate not only to the implementation of the strategy, but improving it to accommodate all problems currently facing the doctors and finding ways and means of making the strategy sustainable; creating private-public partnerships; focusing on creating a sense of meaning amongst the doctors (especially the younger ones) and focusing on retaining the risk group which was the younger doctors.
- Full Text:
- Date Issued: 2008
- Authors: Guvava, Dorothy Dorica
- Date: 2008
- Subjects: Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8221 , http://hdl.handle.net/10948/976 , Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Description: The Port Elizabeth (PE) hospital complex is one of the public hospital groups in South Africa facing a critical shortage of medical practitioners, with reference to doctors in particular. In the quest of finding how to retain doctors in the hospital complex, the aims of this research were to survey doctors’ career intentions; to investigate factors that could be contributing to these career intentions so as to uncover some of the reasons why doctors are leaving the public sector; and to identify effective ways in which the government and hospitals might improve retention by pointing out areas that need improvement. The factors that influence doctors’ career intention included income, work conditions, risk of contracting infection, risk of injury at work, hours of work, work load, work related stress, paid leave days, resources, personal growth and development opportunities, ongoing training opportunities, advancement and promotion opportunities, relation with co-workers, relations with supervisor/superiors, and sense of meaning. Findings revealed that even though the tendency to leave’ group (43%) was smaller than the ‘tendency to stay’ (57%), the majority (85%) of those who intended to leave were younger doctors. Despite some significant differences in responses between the two groups, results revealed that both groups were dissatisfied with almost all conditions of work apart from relationships with supervisors and co-workers. To a large extent, both groups revealed that work conditions are better in the private hospitals than in their current hospitals. viii The fact that some doctors could stay in the public hospital sector despite intense dissatisfaction with conditions of work, and despite the perception that that there are better options in the private hospitals could be attributed to the fact that most of these doctors are older and are at their retirement stage . Adding to this is that most of these doctors, who indicated willingness to say, scored high in sense of meaning as a factor influencing their career intention. This research was based on the assumption that there was no retention strategy put in place to solve the problems facing PE hospital complex. However, during this research a strategy was being developed and implemented by the Eastern Cape Department of Health. Therefore, evaluation and recommendations of the strategy are provided in the conclusions of the study. These recommendations relate not only to the implementation of the strategy, but improving it to accommodate all problems currently facing the doctors and finding ways and means of making the strategy sustainable; creating private-public partnerships; focusing on creating a sense of meaning amongst the doctors (especially the younger ones) and focusing on retaining the risk group which was the younger doctors.
- Full Text:
- Date Issued: 2008
Communal production systems of goats raised by resource-poor farmers in the Eastern Cape Province of South Africa
- Authors: Gwaze, Francisca Rumosa
- Date: 2008
- Subjects: Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Commons -- South Africa -- Eastern Cape , Pastoral systems -- Economic aspects -- South Africa -- Eastern Cape , Goats -- Economic aspects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD (Animal Science)
- Identifier: vital:11578 , http://hdl.handle.net/10353/172 , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Commons -- South Africa -- Eastern Cape , Pastoral systems -- Economic aspects -- South Africa -- Eastern Cape , Goats -- Economic aspects -- South Africa -- Eastern Cape
- Description: Goats significantly contribute towards the subsistence, economic and social livelihoods of many resource-poor farmers in developing countries, the majority of which own goats. There, however, is dearth of information on communal goat production potential and roles to the rural populace. The broad objective of the study was to evaluate production practices, constraints, production efficiency and to determine nutritional and health status of goats raised by resource-poor communal farmers in the Eastern Cape Province of South Africa. Roles and management systems of goats, goat flock dynamics and, prevalence and loads of gastrointestinal infections and the nutritional status of goats in the study areas were determined. The relationships among body weight, body condition score, faecal egg counts and, haematological and biochemical profiles were also determined. Mean goat flock sizes per household were similar between the two districts studied; Amatole (14.0 ± 0.31) and Alfred Nzo (14.1 ± 1.42). Seventy-nine percent of households in Amatole and 78% in Alfred Nzo kept goats for ceremonies, such as the initiation ceremonies. Goat houses in the two districts were poorly constructed. Thirty two percent of farmers in Alfred Nzo district and 27% in Amatole district reported low buck to doe ratios, suggesting that inbreeding might have been reducing productivity of their flocks. Kid mortality had two major peaks; in May (21%) and in September (21%). Goat production potential (GPP), the proportion of mature and growing goats to the total flock size, was affected by gender of owner of goats. Goats owned by female had a significantly lower GPP value of 0.63 ± 0.015 than goats owned by male farmers (0.70 ± 0.010). Month also significantly affected GPP with the highest (P < 0.05) GPP recorded in May, June and July and the lowest in March and April. Village affected GPP with values for Nkosana and Qawukeni being significantly higher than for Mankone. Goat production potential was also higher (P < 0.05) in small flocks (0.04 ± 0.008) than in large flocks (0.02 ± 0.008). Goat production efficiency (GPE) ranged from 0.11 ± 0.193 in April to 1.55 ± 0.193 in December. The most prevalent gastrointestinal eggs were the strongyle egg type (68.4 ± 8.49 in Qawukeni and 96.1 ± 12.01 in Nkosana) followed by coccidia (53.3 ± 8.76 in Qawukeni and 68.8 ± 8.00 in Mankone). The other identified nematodes were Strongyloides and Trichostrongylus egg types. The trematodes observed were Fasciola and Paramphistomum species. High loads of strongyle eggs were observed in the hot-wet season and the post-rainy season, whilst the other egg types showed a peak in the hot-wet season only. For most of the gastrointestinal parasite eggs, prevalence was higher (P < 0.05) in the sour rangeland compared to the sweet rangeland. Higher (P < 0.05) levels of total protein (TP), globulin, aspartate aminotransferase (AST) and creatinine kinase (CK) levels were recorded in the wet than in the dry season. Body condition scores were positively correlated (P < 0.05) to albumin, body weight and packed cell volume. However, body condition scores were negatively correlated to TP, glucose, alanine transaminase (ALT) and AST. Strongyle egg loads were positively correlated to FAMACHA scores, packed cell volume, body weight and body condition score. The observed high globulin levels suggested a chronic health challenge. Thus, it is fundamental to devise affordable interventions for the control of gastrointestinal parasites in communal goats leading to improved goat productivity and hence rural livelihood
- Full Text:
- Date Issued: 2008
- Authors: Gwaze, Francisca Rumosa
- Date: 2008
- Subjects: Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Commons -- South Africa -- Eastern Cape , Pastoral systems -- Economic aspects -- South Africa -- Eastern Cape , Goats -- Economic aspects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD (Animal Science)
- Identifier: vital:11578 , http://hdl.handle.net/10353/172 , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Commons -- South Africa -- Eastern Cape , Pastoral systems -- Economic aspects -- South Africa -- Eastern Cape , Goats -- Economic aspects -- South Africa -- Eastern Cape
- Description: Goats significantly contribute towards the subsistence, economic and social livelihoods of many resource-poor farmers in developing countries, the majority of which own goats. There, however, is dearth of information on communal goat production potential and roles to the rural populace. The broad objective of the study was to evaluate production practices, constraints, production efficiency and to determine nutritional and health status of goats raised by resource-poor communal farmers in the Eastern Cape Province of South Africa. Roles and management systems of goats, goat flock dynamics and, prevalence and loads of gastrointestinal infections and the nutritional status of goats in the study areas were determined. The relationships among body weight, body condition score, faecal egg counts and, haematological and biochemical profiles were also determined. Mean goat flock sizes per household were similar between the two districts studied; Amatole (14.0 ± 0.31) and Alfred Nzo (14.1 ± 1.42). Seventy-nine percent of households in Amatole and 78% in Alfred Nzo kept goats for ceremonies, such as the initiation ceremonies. Goat houses in the two districts were poorly constructed. Thirty two percent of farmers in Alfred Nzo district and 27% in Amatole district reported low buck to doe ratios, suggesting that inbreeding might have been reducing productivity of their flocks. Kid mortality had two major peaks; in May (21%) and in September (21%). Goat production potential (GPP), the proportion of mature and growing goats to the total flock size, was affected by gender of owner of goats. Goats owned by female had a significantly lower GPP value of 0.63 ± 0.015 than goats owned by male farmers (0.70 ± 0.010). Month also significantly affected GPP with the highest (P < 0.05) GPP recorded in May, June and July and the lowest in March and April. Village affected GPP with values for Nkosana and Qawukeni being significantly higher than for Mankone. Goat production potential was also higher (P < 0.05) in small flocks (0.04 ± 0.008) than in large flocks (0.02 ± 0.008). Goat production efficiency (GPE) ranged from 0.11 ± 0.193 in April to 1.55 ± 0.193 in December. The most prevalent gastrointestinal eggs were the strongyle egg type (68.4 ± 8.49 in Qawukeni and 96.1 ± 12.01 in Nkosana) followed by coccidia (53.3 ± 8.76 in Qawukeni and 68.8 ± 8.00 in Mankone). The other identified nematodes were Strongyloides and Trichostrongylus egg types. The trematodes observed were Fasciola and Paramphistomum species. High loads of strongyle eggs were observed in the hot-wet season and the post-rainy season, whilst the other egg types showed a peak in the hot-wet season only. For most of the gastrointestinal parasite eggs, prevalence was higher (P < 0.05) in the sour rangeland compared to the sweet rangeland. Higher (P < 0.05) levels of total protein (TP), globulin, aspartate aminotransferase (AST) and creatinine kinase (CK) levels were recorded in the wet than in the dry season. Body condition scores were positively correlated (P < 0.05) to albumin, body weight and packed cell volume. However, body condition scores were negatively correlated to TP, glucose, alanine transaminase (ALT) and AST. Strongyle egg loads were positively correlated to FAMACHA scores, packed cell volume, body weight and body condition score. The observed high globulin levels suggested a chronic health challenge. Thus, it is fundamental to devise affordable interventions for the control of gastrointestinal parasites in communal goats leading to improved goat productivity and hence rural livelihood
- Full Text:
- Date Issued: 2008
On the optical characterization of photovoltaic devices
- Authors: Gxasheka, Andile Richman
- Date: 2008
- Subjects: Photovoltaic power systems -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10529 , http://hdl.handle.net/10948/692 , Photovoltaic power systems -- South Africa
- Description: Semiconductor materials used for making photovoltaic (PV) cells have defects and impurities due to constraints of keeping production costs low. Electrically active defects that are distributed over the bulk material lead to reduced overall performance of a photovoltaic (PV) cell. In this study an adaptable Light Beam Induced Current (LBIC) system was designed in order to characterize the local performance of PV cells. The system uses a laser source and objective lens mounted vertically above the sample on the X-Y stage. Two current pre-amplifiers are used for converting the photo-generated current from the PV cell and the signal from the reflection detector cell into a voltage that can be measured by the data acquisition board. Two configurations for measuring the photo-current maps of either bare cells or encapsulated PV mini-modules can be used. To add flexibility it was envisaged that the system would be built in such a way that it allows easy integration of carrier lifetime mapping capabilities while keeping costs to a minimum. The carrier lifetime measurement technique integrated into the LBIC system is based on the optical Open-Circuit Voltage-Decay (OCVD) method. In a single-crystalline silicon PV cell that was tested, photo-current and opencircuit voltage LBIC scans revealed shunting behaviour due to scratch marks on the front surface. The marks are believed to have been caused by poor handling during manufacturing process. Reduced photo-current due to edge shunting was observed towards the edges of the PV cell. In another sample of single crystalline silicon cell an edge shunt resulted in a 30 percent drop in photo-current measured. LBIC measurements performed on multi-crystalline cells revealed nonuniformities such as enhanced photo-current on one side of grain boundaries. These asymmetric enhancements of local photo-current are attributed to the incline of the grain boundary into the bulk of the material. LBIC results obtained from mini modules showed a high degree of mismatching from cell to cell. It is well known that mismatching can degrade the performance of a PV module with series connected cells. The LBIC measurements presented also illustrated the negative effects of delamination on the photo-current of PV modules. The LBIC measurements performed on mini PV modules highlight some of the benefits of using an LBIC technique as a tool for investigating PV cell’s local photo-current response. The effective lifetime maps obtained highlight the importance of optical OCVD method as a tool that can be used in conjunction with conventional LBIC technique. Effective minority carrier lifetimes around 40 ms were measured on a single crystalline silicon cell of 2.5 x 2.5 cm2. Local features such as cracks and lifetime degrading defects were revealed by LBIC maps and were also confirmed on effective lifetime maps. The results presented demonstrate the importance of using effective carrier lifetime maps to complement photocurrent maps of PV cells and identification of areas where defects are located.
- Full Text:
- Date Issued: 2008
- Authors: Gxasheka, Andile Richman
- Date: 2008
- Subjects: Photovoltaic power systems -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10529 , http://hdl.handle.net/10948/692 , Photovoltaic power systems -- South Africa
- Description: Semiconductor materials used for making photovoltaic (PV) cells have defects and impurities due to constraints of keeping production costs low. Electrically active defects that are distributed over the bulk material lead to reduced overall performance of a photovoltaic (PV) cell. In this study an adaptable Light Beam Induced Current (LBIC) system was designed in order to characterize the local performance of PV cells. The system uses a laser source and objective lens mounted vertically above the sample on the X-Y stage. Two current pre-amplifiers are used for converting the photo-generated current from the PV cell and the signal from the reflection detector cell into a voltage that can be measured by the data acquisition board. Two configurations for measuring the photo-current maps of either bare cells or encapsulated PV mini-modules can be used. To add flexibility it was envisaged that the system would be built in such a way that it allows easy integration of carrier lifetime mapping capabilities while keeping costs to a minimum. The carrier lifetime measurement technique integrated into the LBIC system is based on the optical Open-Circuit Voltage-Decay (OCVD) method. In a single-crystalline silicon PV cell that was tested, photo-current and opencircuit voltage LBIC scans revealed shunting behaviour due to scratch marks on the front surface. The marks are believed to have been caused by poor handling during manufacturing process. Reduced photo-current due to edge shunting was observed towards the edges of the PV cell. In another sample of single crystalline silicon cell an edge shunt resulted in a 30 percent drop in photo-current measured. LBIC measurements performed on multi-crystalline cells revealed nonuniformities such as enhanced photo-current on one side of grain boundaries. These asymmetric enhancements of local photo-current are attributed to the incline of the grain boundary into the bulk of the material. LBIC results obtained from mini modules showed a high degree of mismatching from cell to cell. It is well known that mismatching can degrade the performance of a PV module with series connected cells. The LBIC measurements presented also illustrated the negative effects of delamination on the photo-current of PV modules. The LBIC measurements performed on mini PV modules highlight some of the benefits of using an LBIC technique as a tool for investigating PV cell’s local photo-current response. The effective lifetime maps obtained highlight the importance of optical OCVD method as a tool that can be used in conjunction with conventional LBIC technique. Effective minority carrier lifetimes around 40 ms were measured on a single crystalline silicon cell of 2.5 x 2.5 cm2. Local features such as cracks and lifetime degrading defects were revealed by LBIC maps and were also confirmed on effective lifetime maps. The results presented demonstrate the importance of using effective carrier lifetime maps to complement photocurrent maps of PV cells and identification of areas where defects are located.
- Full Text:
- Date Issued: 2008
Synthetic, spectrometric and computer modelling studies of novel ATP analogues
- Gxoyiya, Babalwa Siliziwe Blossom
- Authors: Gxoyiya, Babalwa Siliziwe Blossom
- Date: 2008
- Subjects: Spectrum analysis Tuberculosis -- Treatment Chemotherapy Adenosine triphosphate Adenosine triphosphate -- Synthesis Adenosine triphosphate -- Computer simulation Adenosine triphosphate -- Spectrometric imaging Glutamine synthetase Tuberculosis -- Chemotherapy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4386 , http://hdl.handle.net/10962/d1005051
- Description: This study has been concerned with the design and synthesis of A TP analogues with the potential to act as inhibitors of glutamine synthetase - a novel target for therapeutic intervention in the treatment of tuberculosis. Using a structural -analogy approach, various 3-indolylalkanoic acid, benzimidazole and pyrazolo[3,4-dJpyrimidine derivatives have been prepared and characterized. Alkylation of the heterocyclic bases using 4-(bromomethyl)-2,2-dimethyl-1 ,3-d ioxolane, 2-(bromomethoxy)ethyl acetate and 2-(chloroethoxy)ethanol in the presence of either NaH or BulOK afforded the corresponding N-alkylated derivatives of benzimidazole and 4-aminopyrazolo[3,4-dJpyrimidine (4-APP). Similar reactions with 3-indo lylalkanoic esters resulted in O-alkyl cleavage with the formation of new esters. Alkylation of benzimidazole with allyl bromide, 4-bromobutene and 2-methylbut-2-ene has also been shown to afford the corresponding l-alkenylbenzimidazoles in moderate to excellent yield (43-96%). Subsequent oxidation of these products using CTAP, gave the dihydroxy derivatives in poor to good yields (26-77%). Phosphorylation of various hydroxy derivatives of benzimidazole and 4-APP has been achieved using diethyl chlorophosphate to afford the corresponding monophosphate and 1,2-diphosphate esters. Glycosylation of each of the heterocyclic bases has been successfully achieved using 1,2,3,4,6-penta-O-acetyl-D-glucopyranose and SnCl4 in acetonitri le, while methanolysis of the resulting tetraacetates, using methanolic NaOMe, afforded the hydroxy derivatives in good yield (50-70%). Various 1- and 2-dimensional NMR spectroscopic methods (e.g., IH, 13C, lip, COSY, HSQC and HMBC) have been used to confirm the structures of the synthesized A IP analogues. The application of NMR prediction programmes has been explored, permitting assessment of their agreement with the experimental data and confirmation of assigned structures. High-resolution electron impact (EI) mass spectrometric data have been used to explore the mass fragmentation pathways exhibited by selected derivatives, and certain common fragmentations have been identified. Molecular modelling of selected products as potential glutamine synthetase ligands has been performed on the Accelrys Cerius2 platform, and interactive receptor-ligand docking studies have been conducted using the Ligand-Fit module. These studies have revealed possible hydrogen-boding interactions between the selected analogues and various amino acid residues in the glutamine synthetase active site.
- Full Text:
- Date Issued: 2008
- Authors: Gxoyiya, Babalwa Siliziwe Blossom
- Date: 2008
- Subjects: Spectrum analysis Tuberculosis -- Treatment Chemotherapy Adenosine triphosphate Adenosine triphosphate -- Synthesis Adenosine triphosphate -- Computer simulation Adenosine triphosphate -- Spectrometric imaging Glutamine synthetase Tuberculosis -- Chemotherapy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4386 , http://hdl.handle.net/10962/d1005051
- Description: This study has been concerned with the design and synthesis of A TP analogues with the potential to act as inhibitors of glutamine synthetase - a novel target for therapeutic intervention in the treatment of tuberculosis. Using a structural -analogy approach, various 3-indolylalkanoic acid, benzimidazole and pyrazolo[3,4-dJpyrimidine derivatives have been prepared and characterized. Alkylation of the heterocyclic bases using 4-(bromomethyl)-2,2-dimethyl-1 ,3-d ioxolane, 2-(bromomethoxy)ethyl acetate and 2-(chloroethoxy)ethanol in the presence of either NaH or BulOK afforded the corresponding N-alkylated derivatives of benzimidazole and 4-aminopyrazolo[3,4-dJpyrimidine (4-APP). Similar reactions with 3-indo lylalkanoic esters resulted in O-alkyl cleavage with the formation of new esters. Alkylation of benzimidazole with allyl bromide, 4-bromobutene and 2-methylbut-2-ene has also been shown to afford the corresponding l-alkenylbenzimidazoles in moderate to excellent yield (43-96%). Subsequent oxidation of these products using CTAP, gave the dihydroxy derivatives in poor to good yields (26-77%). Phosphorylation of various hydroxy derivatives of benzimidazole and 4-APP has been achieved using diethyl chlorophosphate to afford the corresponding monophosphate and 1,2-diphosphate esters. Glycosylation of each of the heterocyclic bases has been successfully achieved using 1,2,3,4,6-penta-O-acetyl-D-glucopyranose and SnCl4 in acetonitri le, while methanolysis of the resulting tetraacetates, using methanolic NaOMe, afforded the hydroxy derivatives in good yield (50-70%). Various 1- and 2-dimensional NMR spectroscopic methods (e.g., IH, 13C, lip, COSY, HSQC and HMBC) have been used to confirm the structures of the synthesized A IP analogues. The application of NMR prediction programmes has been explored, permitting assessment of their agreement with the experimental data and confirmation of assigned structures. High-resolution electron impact (EI) mass spectrometric data have been used to explore the mass fragmentation pathways exhibited by selected derivatives, and certain common fragmentations have been identified. Molecular modelling of selected products as potential glutamine synthetase ligands has been performed on the Accelrys Cerius2 platform, and interactive receptor-ligand docking studies have been conducted using the Ligand-Fit module. These studies have revealed possible hydrogen-boding interactions between the selected analogues and various amino acid residues in the glutamine synthetase active site.
- Full Text:
- Date Issued: 2008
A feasibility study into total electron content prediction using neural networks
- Authors: Habarulema, John Bosco
- Date: 2008
- Subjects: Electrons , Neural networks (Computer science) , Global Positioning System , Ionosphere , Ionospheric electron density
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5466 , http://hdl.handle.net/10962/d1005251 , Electrons , Neural networks (Computer science) , Global Positioning System , Ionosphere , Ionospheric electron density
- Description: Global Positioning System (GPS) networks provide an opportunity to study the dynamics and continuous changes in the ionosphere by supplementing ionospheric measurements which are usually obtained by various techniques such as ionosondes, incoherent scatter radars and satellites. Total electron content (TEC) is one of the physical quantities that can be derived from GPS data, and provides an indication of ionospheric variability. This thesis presents a feasibility study for the development of a Neural Network (NN) based model for the prediction of South African GPS derived TEC. The South African GPS receiver network is operated and maintained by the Chief Directorate Surveys and Mapping (CDSM) in Cape Town, South Africa. Three South African locations were identified and used in the development of an input space and NN architecture for the model. The input space includes the day number (seasonal variation), hour (diurnal variation), sunspot number (measure of the solar activity), and magnetic index(measure of the magnetic activity). An attempt to study the effects of solar wind on TEC variability was carried out using the Advanced Composition Explorer (ACE) data and it is recommended that more study be done using low altitude satellite data. An analysis was done by comparing predicted NN TEC with TEC values from the IRI2001 version of the International Reference Ionosphere (IRI), validating GPS TEC with ionosonde TEC (ITEC) and assessing the performance of the NN model during equinoxes and solstices. Results show that NNs predict GPS TEC more accurately than the IRI at South African GPS locations, but that more good quality GPS data is required before a truly representative empirical GPS TEC model can be released.
- Full Text:
- Date Issued: 2008
- Authors: Habarulema, John Bosco
- Date: 2008
- Subjects: Electrons , Neural networks (Computer science) , Global Positioning System , Ionosphere , Ionospheric electron density
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5466 , http://hdl.handle.net/10962/d1005251 , Electrons , Neural networks (Computer science) , Global Positioning System , Ionosphere , Ionospheric electron density
- Description: Global Positioning System (GPS) networks provide an opportunity to study the dynamics and continuous changes in the ionosphere by supplementing ionospheric measurements which are usually obtained by various techniques such as ionosondes, incoherent scatter radars and satellites. Total electron content (TEC) is one of the physical quantities that can be derived from GPS data, and provides an indication of ionospheric variability. This thesis presents a feasibility study for the development of a Neural Network (NN) based model for the prediction of South African GPS derived TEC. The South African GPS receiver network is operated and maintained by the Chief Directorate Surveys and Mapping (CDSM) in Cape Town, South Africa. Three South African locations were identified and used in the development of an input space and NN architecture for the model. The input space includes the day number (seasonal variation), hour (diurnal variation), sunspot number (measure of the solar activity), and magnetic index(measure of the magnetic activity). An attempt to study the effects of solar wind on TEC variability was carried out using the Advanced Composition Explorer (ACE) data and it is recommended that more study be done using low altitude satellite data. An analysis was done by comparing predicted NN TEC with TEC values from the IRI2001 version of the International Reference Ionosphere (IRI), validating GPS TEC with ionosonde TEC (ITEC) and assessing the performance of the NN model during equinoxes and solstices. Results show that NNs predict GPS TEC more accurately than the IRI at South African GPS locations, but that more good quality GPS data is required before a truly representative empirical GPS TEC model can be released.
- Full Text:
- Date Issued: 2008
A critical edition of the poems of Henry Vaux (c. 1559-1587) in MS. Folger Bd with STC 22957
- Hacksley, Timothy Christopher
- Authors: Hacksley, Timothy Christopher
- Date: 2008
- Subjects: Vaux, Henry, ca. 1559-1587 -- Criticism and interpretation Vaux, Henry, ca. 1559-1587 Latin poetry, Medieval and modern -- History and criticism English poetry -- Early modern, 1500-1700
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2200 , http://hdl.handle.net/10962/d1002242
- Description: This thesis offers an edition of the English and Latin poems found in MS. Folger bd with STC 22957, attributed to Henry Vaux (c. 1559—1587), a recusant, priest-smuggler, and child prodigy. THE TEXT of the edition is preceded by an introduction comprising three parts: a GENERAL INTRODUCTION describing Vaux‘s socio-historical and biographical context; a CRITICAL INTRODUCTION describing the Medieval and Early Modern literary contexts of Vaux‘s poems and the forms, traditions, topoi, and conventions adhered to in them; and a TEXTUAL INTRODUCTION describing the seventeenth-century manuscript copy of the poems used as the source text and explaining and justifying the editorial decisions made. Textual variants and instances of doubtful authorship are also discussed. THE TEXT itself is presented in the original spelling of the MS. and is a diplomatic edition: the scribe‘s use of characters that are now defunct (such as long ‗s‘ and ‗=‘ for ‗-‘) has not been modernised. A critical apparatus is provided with THE TEXT. THE TEXT is followed by an extensive COMMENTARY, which glosses un-usual or archaic words and phrases, points out allusions and their likely sources, discusses literary forms and conventions which inform the reading of the po-ems, and observes peculiarities in poetic metre. Translations and commentary are offered for Vaux‘s Latin poems. The five appendices following the COMMEN-TARY comprise a MODERNISED TEXT of the poems, a FACSIMILE OF THE FOLGER MS., a SUBSEQUENT HISTORY OF THE VAUX FAMILY after Henry Vaux‘s death, a text JOHN OF PECHAM‘S PHILOMENA PRAEVIA (a text which informs the reading of Vaux‘s ―A complaint to the Nightingale‖) along with a parallel translation by me, and transcriptions of TEXTUAL VARIANTS. A BIBLIOGRAPHY of works cited, re-ferred to or consulted follows the appendices. A comprehensive GENERAL INDEX of subjects, people, places, and literary works and forms follows this, and an IN-DEX OF FIRST LINES AND TITLES of Vaux‘s poems completes the edition.
- Full Text:
- Date Issued: 2008
- Authors: Hacksley, Timothy Christopher
- Date: 2008
- Subjects: Vaux, Henry, ca. 1559-1587 -- Criticism and interpretation Vaux, Henry, ca. 1559-1587 Latin poetry, Medieval and modern -- History and criticism English poetry -- Early modern, 1500-1700
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2200 , http://hdl.handle.net/10962/d1002242
- Description: This thesis offers an edition of the English and Latin poems found in MS. Folger bd with STC 22957, attributed to Henry Vaux (c. 1559—1587), a recusant, priest-smuggler, and child prodigy. THE TEXT of the edition is preceded by an introduction comprising three parts: a GENERAL INTRODUCTION describing Vaux‘s socio-historical and biographical context; a CRITICAL INTRODUCTION describing the Medieval and Early Modern literary contexts of Vaux‘s poems and the forms, traditions, topoi, and conventions adhered to in them; and a TEXTUAL INTRODUCTION describing the seventeenth-century manuscript copy of the poems used as the source text and explaining and justifying the editorial decisions made. Textual variants and instances of doubtful authorship are also discussed. THE TEXT itself is presented in the original spelling of the MS. and is a diplomatic edition: the scribe‘s use of characters that are now defunct (such as long ‗s‘ and ‗=‘ for ‗-‘) has not been modernised. A critical apparatus is provided with THE TEXT. THE TEXT is followed by an extensive COMMENTARY, which glosses un-usual or archaic words and phrases, points out allusions and their likely sources, discusses literary forms and conventions which inform the reading of the po-ems, and observes peculiarities in poetic metre. Translations and commentary are offered for Vaux‘s Latin poems. The five appendices following the COMMEN-TARY comprise a MODERNISED TEXT of the poems, a FACSIMILE OF THE FOLGER MS., a SUBSEQUENT HISTORY OF THE VAUX FAMILY after Henry Vaux‘s death, a text JOHN OF PECHAM‘S PHILOMENA PRAEVIA (a text which informs the reading of Vaux‘s ―A complaint to the Nightingale‖) along with a parallel translation by me, and transcriptions of TEXTUAL VARIANTS. A BIBLIOGRAPHY of works cited, re-ferred to or consulted follows the appendices. A comprehensive GENERAL INDEX of subjects, people, places, and literary works and forms follows this, and an IN-DEX OF FIRST LINES AND TITLES of Vaux‘s poems completes the edition.
- Full Text:
- Date Issued: 2008
An evaluation of product quality and consumer satisfaction in the FMCG market : Pick 'n Pay hypermarket, Port Elizabeth
- Authors: Hallam, Edward James
- Date: 2008
- Subjects: Quality of products -- Management , Quality of products -- Evaluation , Consumer satisfaction -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9364 , http://hdl.handle.net/10948/974 , Quality of products -- Management , Quality of products -- Evaluation , Consumer satisfaction -- South Africa -- Port Elizabeth
- Description: In an intensely competitive retail market, keeping consumers satisfied has never been more important than currently. Retailers need to understand how to satisfy their customers in order to enhance their appeal and increase consumer loyalty. Globally people’s lifestyles are changing rapidly. Advances in technology, more flexi-time of customers, and the many other social and economic changes affecting family and home life are some of the reasons why, specifically in the Fast Moving Consumer Goods (FMCG) industry, it is important to act fast to service customers. In South Africa, there is indication of strong competition between the most dominant firms’ in the FMCG market, which include Pick ‘n Pay Holdings Limited (23.8 percent), Shoprite Holdings Limited (23.8 percent), the Spar Group Limited (14.9 percent), and Woolworths Holdings Limited (9.0 percent). As a result, it is unmistakable that in order for FMCG firms to grow and survive in the constantly changing, and competitive retail environment of South Africa, they must have a clear understanding of consumer’s expectations, as well as their actual shopping experiences. As stated, service quality for retailers of FMCG is of utmost importance to their level of success and ability to successfully cater for the market’s needs. Closely linked to this, is the focus of this study, namely to investigate consumers’ perceived levels of product quality, as well as the overall level of satisfaction experienced by customers. The purpose of this analytical research project is twofold: Firstly, to empirically test the hypothetical model and the associated hypotheses (as phrased in Section 1.4) by using confirmatory statistical techniques. Secondly, based on the findings of the research, to craft appropriate retail marketing strategies within the FMCG market that are suitable for implementation to address potential mismatches (gaps) of perceived product quality and consumers’ satisfaction. By the crafting of appropriate retail strategies, the potential to develop the FMCG industry in South Africa will be enhanced. Given the purpose and nature of the research in question, a positivistic research paradigm was adopted. The utilization of a Likert seven-point scale enabled primary data to be sourced from 301 consumers’ (respondents), who shared their perceptions on the expectations and actual experiences about the product quality of FMCG in South Africa. The statistical analysis of quantitative data comprised seven distinct phases. Firstly, the data was subjected to a confirmatory factor analysis to validate the measurement model by assessing the construct (convergent, discriminant and nomological) validity of the pre-specified (predicted) factors. Secondly, the reliability (internal consistency) of the research instrument was assessed by means of Cronbach alpha reliability coefficients. This phase was followed by a multiple linear regression analyses which were used to test the impact of independent variables on the intervening variable. In order to test the second set of hypotheses (null and alternative hypotheses dealing with consumers’ expected product quality and their actual experiences) matched paired t-tests were utilized. Additionally, mean scores and relative percentage ratings on consumers’ expected and perceived product quality levels were also calculated and interpreted. Finally, bivariate linear regression analyses were used to test the third set of hypotheses (impact of consumers perceived product quality on consumers overall level of satisfaction). The findings of the multiple linear regression analyses required that the hypothetical model be reconstructed. Two variables were removed from the hypothetical model, namely, ‘South African culture’ and ‘service promises’. The findings of the matched pair t-tests show that significant statistical differences do exist between the ‘expectations’ and ‘actual experiences’ of consumers’ perceived product quality to support the hypothesis H3.A, namely: “There are no perceived differences between consumers’ expectations and their perceptions (actual experience) of product quality”. Besides the matched pair t-tests, further descriptive statistical analyses were also performed to assess the magnitude of the “gap” between expectations and actual experiences of consumers on South African FMCG product quality, such as the values for Cohen’s d and relative percentage ratings. The findings reveal that the consumers’ were not completely satisfied with their actual experiences. Three sets of conclusions and recommendations were identified for this research. Firstly, conclusions emanating from secondary sources on product quality and consumers’ satisfaction literature were provided, such as consumer satisfaction is seen more as a psychological state, which reveals an overall feeling of consumers’ purchase and consumption experience with FMCG. Secondly, the conclusions linked to the interpretation of the empirical findings revealed significant statistical differences between the expectations and perceptions (actual experiences) of consumers’ on perceived product quality. Finally, recommendations on relevant FMCG retail marketing strategies can be grouped into five domains: To build customer-led firms which adhere to the principles of true marketing orientation where the focus is on consumers and their needs and wants. Identify and clearly define the FMCG market in South Africa which comprises different market segments that are of great importance for the retail firms. The decision on a proper positioning strategy entails the choice of the target market segments, which will determine where and how the FMCG firm competes and the choice of differential advantages. Retailers should apply suitable marketing strategies to benefit optimally from their FMCG retail marketing strategies. A sound feedback system is a necessary component in the strategic marketing plan to obtain proper feedback that would contribute to the “management by exception” principle. It further will facilitate performance evaluation of product quality and service delivery, as well as and enable corrective actions to be taken in the case of deviations from the norm.
- Full Text:
- Date Issued: 2008
- Authors: Hallam, Edward James
- Date: 2008
- Subjects: Quality of products -- Management , Quality of products -- Evaluation , Consumer satisfaction -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9364 , http://hdl.handle.net/10948/974 , Quality of products -- Management , Quality of products -- Evaluation , Consumer satisfaction -- South Africa -- Port Elizabeth
- Description: In an intensely competitive retail market, keeping consumers satisfied has never been more important than currently. Retailers need to understand how to satisfy their customers in order to enhance their appeal and increase consumer loyalty. Globally people’s lifestyles are changing rapidly. Advances in technology, more flexi-time of customers, and the many other social and economic changes affecting family and home life are some of the reasons why, specifically in the Fast Moving Consumer Goods (FMCG) industry, it is important to act fast to service customers. In South Africa, there is indication of strong competition between the most dominant firms’ in the FMCG market, which include Pick ‘n Pay Holdings Limited (23.8 percent), Shoprite Holdings Limited (23.8 percent), the Spar Group Limited (14.9 percent), and Woolworths Holdings Limited (9.0 percent). As a result, it is unmistakable that in order for FMCG firms to grow and survive in the constantly changing, and competitive retail environment of South Africa, they must have a clear understanding of consumer’s expectations, as well as their actual shopping experiences. As stated, service quality for retailers of FMCG is of utmost importance to their level of success and ability to successfully cater for the market’s needs. Closely linked to this, is the focus of this study, namely to investigate consumers’ perceived levels of product quality, as well as the overall level of satisfaction experienced by customers. The purpose of this analytical research project is twofold: Firstly, to empirically test the hypothetical model and the associated hypotheses (as phrased in Section 1.4) by using confirmatory statistical techniques. Secondly, based on the findings of the research, to craft appropriate retail marketing strategies within the FMCG market that are suitable for implementation to address potential mismatches (gaps) of perceived product quality and consumers’ satisfaction. By the crafting of appropriate retail strategies, the potential to develop the FMCG industry in South Africa will be enhanced. Given the purpose and nature of the research in question, a positivistic research paradigm was adopted. The utilization of a Likert seven-point scale enabled primary data to be sourced from 301 consumers’ (respondents), who shared their perceptions on the expectations and actual experiences about the product quality of FMCG in South Africa. The statistical analysis of quantitative data comprised seven distinct phases. Firstly, the data was subjected to a confirmatory factor analysis to validate the measurement model by assessing the construct (convergent, discriminant and nomological) validity of the pre-specified (predicted) factors. Secondly, the reliability (internal consistency) of the research instrument was assessed by means of Cronbach alpha reliability coefficients. This phase was followed by a multiple linear regression analyses which were used to test the impact of independent variables on the intervening variable. In order to test the second set of hypotheses (null and alternative hypotheses dealing with consumers’ expected product quality and their actual experiences) matched paired t-tests were utilized. Additionally, mean scores and relative percentage ratings on consumers’ expected and perceived product quality levels were also calculated and interpreted. Finally, bivariate linear regression analyses were used to test the third set of hypotheses (impact of consumers perceived product quality on consumers overall level of satisfaction). The findings of the multiple linear regression analyses required that the hypothetical model be reconstructed. Two variables were removed from the hypothetical model, namely, ‘South African culture’ and ‘service promises’. The findings of the matched pair t-tests show that significant statistical differences do exist between the ‘expectations’ and ‘actual experiences’ of consumers’ perceived product quality to support the hypothesis H3.A, namely: “There are no perceived differences between consumers’ expectations and their perceptions (actual experience) of product quality”. Besides the matched pair t-tests, further descriptive statistical analyses were also performed to assess the magnitude of the “gap” between expectations and actual experiences of consumers on South African FMCG product quality, such as the values for Cohen’s d and relative percentage ratings. The findings reveal that the consumers’ were not completely satisfied with their actual experiences. Three sets of conclusions and recommendations were identified for this research. Firstly, conclusions emanating from secondary sources on product quality and consumers’ satisfaction literature were provided, such as consumer satisfaction is seen more as a psychological state, which reveals an overall feeling of consumers’ purchase and consumption experience with FMCG. Secondly, the conclusions linked to the interpretation of the empirical findings revealed significant statistical differences between the expectations and perceptions (actual experiences) of consumers’ on perceived product quality. Finally, recommendations on relevant FMCG retail marketing strategies can be grouped into five domains: To build customer-led firms which adhere to the principles of true marketing orientation where the focus is on consumers and their needs and wants. Identify and clearly define the FMCG market in South Africa which comprises different market segments that are of great importance for the retail firms. The decision on a proper positioning strategy entails the choice of the target market segments, which will determine where and how the FMCG firm competes and the choice of differential advantages. Retailers should apply suitable marketing strategies to benefit optimally from their FMCG retail marketing strategies. A sound feedback system is a necessary component in the strategic marketing plan to obtain proper feedback that would contribute to the “management by exception” principle. It further will facilitate performance evaluation of product quality and service delivery, as well as and enable corrective actions to be taken in the case of deviations from the norm.
- Full Text:
- Date Issued: 2008
Demand-side management of internet bandwidth
- Authors: Halse, Guy A
- Date: 2008
- Language: English
- Type: Conference paper
- Identifier: vital:6607 , http://hdl.handle.net/10962/d1009463
- Description: Presentation on the demand-side management of Internet bandwidth, using Rhodes University as a case study, as presented at the DITCHE national techie event in September 2008.
- Full Text:
- Date Issued: 2008
- Authors: Halse, Guy A
- Date: 2008
- Language: English
- Type: Conference paper
- Identifier: vital:6607 , http://hdl.handle.net/10962/d1009463
- Description: Presentation on the demand-side management of Internet bandwidth, using Rhodes University as a case study, as presented at the DITCHE national techie event in September 2008.
- Full Text:
- Date Issued: 2008
The development and evaluation of a custom-built synchronous online learning environment for tertiary education in South Africa
- Authors: Halse, Michelle Louise
- Date: 2008 , 2008-02-23
- Subjects: Education, Higher -- South Africa -- Computer-assisted instruction , Universities and colleges -- Computer networks -- South Africa , Internet in higher education -- South Africa , Distance education -- South Africa -- Computer-assisted instruction , Computer-assisted instruction -- South Africa , Computer science -- Study and teaching (Higher) -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4636 , http://hdl.handle.net/10962/d1006545 , Education, Higher -- South Africa -- Computer-assisted instruction , Universities and colleges -- Computer networks -- South Africa , Internet in higher education -- South Africa , Distance education -- South Africa -- Computer-assisted instruction , Computer-assisted instruction -- South Africa , Computer science -- Study and teaching (Higher) -- South Africa
- Description: The Departments of Computer Science and Information Systems at Rhodes University currently share certain honours-level (fourth year) course modules with students from the corresponding departments at the previously disadvantaged University of Fort Hare. These lectures are currently delivered using video-conferencing. This was found to present a number of problems including challenges in terms of implementing desired pedagogical approaches, inequitable learning experiences, student disengagement at the remote venue, and inflexibility of the video-conferencing system. In order to address these problems, various e-learning modes were investigated and synchronous e-learning were found to offer a number of advantages over asynchronous e-learning. Live Virtual Classrooms (LVCs) were identified as synchronous e-learning tools that support the pedagogical principles important to the two universities and to the broader context of South African tertiary education, and commercial LVC applications were investigated and evaluated. Informed by the results of this investigation a small, simple LVC was designed, developed and customised for use in a predominantly academic sphere and deployment in a South African tertiary educational context. Testing and evaluation of this solution was carried out and the results analysed in terms of the LVC’s technical merits and the pedagogical value of the solution as experienced by students and lecturers/facilitators. An evaluation of this solution indicated that the LVC solves a number of the identified problems with video-conferencing and also provides a flexible/customisable/extensible solution that supports highly interactive, collaborative, learner-centred education. The custom LVC solution could be easily adapted to the specific needs of any tertiary educational institute in the country, and results may benefit other tertiary educational institutions involved in or dependant on distance learning.
- Full Text:
- Date Issued: 2008
- Authors: Halse, Michelle Louise
- Date: 2008 , 2008-02-23
- Subjects: Education, Higher -- South Africa -- Computer-assisted instruction , Universities and colleges -- Computer networks -- South Africa , Internet in higher education -- South Africa , Distance education -- South Africa -- Computer-assisted instruction , Computer-assisted instruction -- South Africa , Computer science -- Study and teaching (Higher) -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4636 , http://hdl.handle.net/10962/d1006545 , Education, Higher -- South Africa -- Computer-assisted instruction , Universities and colleges -- Computer networks -- South Africa , Internet in higher education -- South Africa , Distance education -- South Africa -- Computer-assisted instruction , Computer-assisted instruction -- South Africa , Computer science -- Study and teaching (Higher) -- South Africa
- Description: The Departments of Computer Science and Information Systems at Rhodes University currently share certain honours-level (fourth year) course modules with students from the corresponding departments at the previously disadvantaged University of Fort Hare. These lectures are currently delivered using video-conferencing. This was found to present a number of problems including challenges in terms of implementing desired pedagogical approaches, inequitable learning experiences, student disengagement at the remote venue, and inflexibility of the video-conferencing system. In order to address these problems, various e-learning modes were investigated and synchronous e-learning were found to offer a number of advantages over asynchronous e-learning. Live Virtual Classrooms (LVCs) were identified as synchronous e-learning tools that support the pedagogical principles important to the two universities and to the broader context of South African tertiary education, and commercial LVC applications were investigated and evaluated. Informed by the results of this investigation a small, simple LVC was designed, developed and customised for use in a predominantly academic sphere and deployment in a South African tertiary educational context. Testing and evaluation of this solution was carried out and the results analysed in terms of the LVC’s technical merits and the pedagogical value of the solution as experienced by students and lecturers/facilitators. An evaluation of this solution indicated that the LVC solves a number of the identified problems with video-conferencing and also provides a flexible/customisable/extensible solution that supports highly interactive, collaborative, learner-centred education. The custom LVC solution could be easily adapted to the specific needs of any tertiary educational institute in the country, and results may benefit other tertiary educational institutions involved in or dependant on distance learning.
- Full Text:
- Date Issued: 2008
The impact of the broadcast legislative reforms on the newsroom staff's perceptions of the Zambia National Broadcasting Corporation (ZNBC)'s editorial operations and news content
- Authors: Hamasaka, Clayson
- Date: 2008
- Subjects: Zambia National Broadcasting Corporation Public broadcasting -- Zambia Mass media -- Management -- Zambia Broadcasting -- Law and legislation -- Zambia Broadcasting -- Political aspects -- Zambia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3432 , http://hdl.handle.net/10962/d1002886
- Description: The 1980s and 1990s saw major changes in the political landscape of the media in many countries that were either reverting or emerging from repressive nondemocratic regimes. Among the notable changes in media industry was the opening up of the national airwaves, which had been a state monopoly, to private sector and community participation. The democratic dispensation also put state broadcasters in the spot-light regarding their editorial content which was previously ‘institutionalised’ as belonging to the ruling regimes. This study set out to investigate the extent to which broadcasting reform legislation meant to address the unfair coverage of contending voices on Zambia’s public broadcaster has had an impact in reversing the situation in the newsroom. Using qualitative methods of investigation, the study established that while the ZNBC staff understand aspects of their role in their newsroom in relation to the principles of public service broadcasting and in line with the enacted legislation, they perceive that, in practice, they have to ensure that the news content still remains a reserve of a few voices in favour of the ruling regime. This was evidenced by testimonies from the news staff’s complaints of continued editorial interference in their work by government leaders and government appointed gatekeepers, as well as selfcensorship. The study recommends, among other things, the full implementation of the recently enacted laws on the operations of ZNBC in order to achieve some minimum levels of being a public broadcaster. It further recommends a serious re-orientation of the ZNBC newsroom and management staff to the current legislative requirements so as to shift their mindset away from their traditionally-held views of thinking that news at that station is only for the ruling regime.
- Full Text:
- Date Issued: 2008
- Authors: Hamasaka, Clayson
- Date: 2008
- Subjects: Zambia National Broadcasting Corporation Public broadcasting -- Zambia Mass media -- Management -- Zambia Broadcasting -- Law and legislation -- Zambia Broadcasting -- Political aspects -- Zambia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3432 , http://hdl.handle.net/10962/d1002886
- Description: The 1980s and 1990s saw major changes in the political landscape of the media in many countries that were either reverting or emerging from repressive nondemocratic regimes. Among the notable changes in media industry was the opening up of the national airwaves, which had been a state monopoly, to private sector and community participation. The democratic dispensation also put state broadcasters in the spot-light regarding their editorial content which was previously ‘institutionalised’ as belonging to the ruling regimes. This study set out to investigate the extent to which broadcasting reform legislation meant to address the unfair coverage of contending voices on Zambia’s public broadcaster has had an impact in reversing the situation in the newsroom. Using qualitative methods of investigation, the study established that while the ZNBC staff understand aspects of their role in their newsroom in relation to the principles of public service broadcasting and in line with the enacted legislation, they perceive that, in practice, they have to ensure that the news content still remains a reserve of a few voices in favour of the ruling regime. This was evidenced by testimonies from the news staff’s complaints of continued editorial interference in their work by government leaders and government appointed gatekeepers, as well as selfcensorship. The study recommends, among other things, the full implementation of the recently enacted laws on the operations of ZNBC in order to achieve some minimum levels of being a public broadcaster. It further recommends a serious re-orientation of the ZNBC newsroom and management staff to the current legislative requirements so as to shift their mindset away from their traditionally-held views of thinking that news at that station is only for the ruling regime.
- Full Text:
- Date Issued: 2008
Resilience in families with a child living with Autism Spectrum Disorder
- Authors: Hanekom, Leché
- Date: 2008
- Subjects: Autism in children , Parents of autistic children , Autistic children -- Family relationships
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9905 , http://hdl.handle.net/10948/973 , Autism in children , Parents of autistic children , Autistic children -- Family relationships
- Description: In recent years the number of studies on resilience emerging within the field of positive psychology has increased. However, such studies are limited within the South African context and so the proposed study aims to explore and describe the factors that facilitate adjustment and adaptation in South African families living with Autism Spectrum Disorder. McCubbin, McCubbin and Thompson (2001) developed the Resiliency Model of Family Stress, Adjustment and Adaptation which were used to conceptualise the family’s adaptation. Mothers (n = 19) from 19 families participated in the study. The families consisted of at least three members, of which two are parents and one a child younger than 18 years of age that has been diagnosed with Autistic Spectrum Disorder. A combination of non-probability purposive sampling and snowball sampling was used to select participants. The study had an exploratory and descriptive aim and employed triangulation of method, including both qualitative and quantitative data collection procedures. A biographical questionnaire and the following seven structured paper-and-pencil questionnaires were used: the Family Attachment and Changeability Index 8 (FACI8), the Family Crisis-oriented Personal Evaluation Scales (F-COPES), the Family Hardiness Index (FHI), the Family Problem-solving Communication (FPSC), the Family Time and Routine Index (FTRI), the Relative and Friend Support (RFS), and the Social Support Index (SSI). Descriptive statistics were used to describe the biographical information. Qualitative data were analysed by means of content analysis. Quantitative data were manipulated by means of correlation and regression analysis. The results from the quantitative analysis indicate three significant positive correlations with the FACI8. These variables were the family hardiness (measured by FHI), family problem-solving communication (measured by the FPSC), and family time and routines (measured by the FTRI). The findings from the qualitative analysis point out that social support, the spousal relationship and family time, togetherness and routines are the most important strength factors that contribute to the family’s adjustment and adaptation. Even though this study had a small sample size and several other limitations, the findings of this study could still assist in guiding specialised institutions toward providing more comprehensive information and support to families living with a child diagnosed with Autism Spectrum Disorder. This study also contributes to the studies on family resilience within a South African context.
- Full Text:
- Date Issued: 2008
- Authors: Hanekom, Leché
- Date: 2008
- Subjects: Autism in children , Parents of autistic children , Autistic children -- Family relationships
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9905 , http://hdl.handle.net/10948/973 , Autism in children , Parents of autistic children , Autistic children -- Family relationships
- Description: In recent years the number of studies on resilience emerging within the field of positive psychology has increased. However, such studies are limited within the South African context and so the proposed study aims to explore and describe the factors that facilitate adjustment and adaptation in South African families living with Autism Spectrum Disorder. McCubbin, McCubbin and Thompson (2001) developed the Resiliency Model of Family Stress, Adjustment and Adaptation which were used to conceptualise the family’s adaptation. Mothers (n = 19) from 19 families participated in the study. The families consisted of at least three members, of which two are parents and one a child younger than 18 years of age that has been diagnosed with Autistic Spectrum Disorder. A combination of non-probability purposive sampling and snowball sampling was used to select participants. The study had an exploratory and descriptive aim and employed triangulation of method, including both qualitative and quantitative data collection procedures. A biographical questionnaire and the following seven structured paper-and-pencil questionnaires were used: the Family Attachment and Changeability Index 8 (FACI8), the Family Crisis-oriented Personal Evaluation Scales (F-COPES), the Family Hardiness Index (FHI), the Family Problem-solving Communication (FPSC), the Family Time and Routine Index (FTRI), the Relative and Friend Support (RFS), and the Social Support Index (SSI). Descriptive statistics were used to describe the biographical information. Qualitative data were analysed by means of content analysis. Quantitative data were manipulated by means of correlation and regression analysis. The results from the quantitative analysis indicate three significant positive correlations with the FACI8. These variables were the family hardiness (measured by FHI), family problem-solving communication (measured by the FPSC), and family time and routines (measured by the FTRI). The findings from the qualitative analysis point out that social support, the spousal relationship and family time, togetherness and routines are the most important strength factors that contribute to the family’s adjustment and adaptation. Even though this study had a small sample size and several other limitations, the findings of this study could still assist in guiding specialised institutions toward providing more comprehensive information and support to families living with a child diagnosed with Autism Spectrum Disorder. This study also contributes to the studies on family resilience within a South African context.
- Full Text:
- Date Issued: 2008