An investigation into interoperable end-to-end mobile web service security
- Authors: Moyo, Thamsanqa
- Date: 2008
- Subjects: Web services , Mobile computing , Smartphones , Internetworking (Telecommunication) , Computer networks -- Security measures , XML (Document markup language) , Microsoft .NET Framework , Java (Computer program language)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4595 , http://hdl.handle.net/10962/d1004838 , Web services , Mobile computing , Smartphones , Internetworking (Telecommunication) , Computer networks -- Security measures , XML (Document markup language) , Microsoft .NET Framework , Java (Computer program language)
- Description: The capacity to engage in web services transactions on smartphones is growing as these devices become increasingly powerful and sophisticated. This capacity for mobile web services is being realised through mobile applications that consume web services hosted on larger computing devices. This thesis investigates the effect that end-to-end web services security has on the interoperability between mobile web services requesters and traditional web services providers. SOAP web services are the preferred web services approach for this investigation. Although WS-Security is recognised as demanding on mobile hardware and network resources, the selection of appropriate WS-Security mechanisms lessens this burden. An attempt to implement such mechanisms on smartphones is carried out via an experiment. Smartphones are selected as the mobile device type used in the experiment. The experiment is conducted on the Java Micro Edition (Java ME) and the .NET Compact Framework (.NET CF) smartphone platforms. The experiment shows that the implementation of interoperable, end-to-end, mobile web services security on both platforms is reliant on third-party libraries. This reliance on third-party libraries results in poor developer support and exposes developers to the complexity of cryptography. The experiment also shows that there are no standard message size optimisation libraries available for both platforms. The implementation carried out on the .NET CF is also shown to rely on the underlying operating system. It is concluded that standard WS-Security APIs must be provided on smartphone platforms to avoid the problems of poor developer support and the additional complexity of cryptography. It is recommended that these APIs include a message optimisation technique. It is further recommended that WS-Security APIs be completely operating system independent when they are implemented in managed code. This thesis contributes by: providing a snapshot of mobile web services security; identifying the smartphone platform state of readiness for end-to-end secure web services; and providing a set of recommendations that may improve this state of readiness. These contributions are of increasing importance as mobile web services evolve from a simple point-to-point environment to the more complex enterprise environment.
- Full Text:
- Date Issued: 2008
- Authors: Moyo, Thamsanqa
- Date: 2008
- Subjects: Web services , Mobile computing , Smartphones , Internetworking (Telecommunication) , Computer networks -- Security measures , XML (Document markup language) , Microsoft .NET Framework , Java (Computer program language)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4595 , http://hdl.handle.net/10962/d1004838 , Web services , Mobile computing , Smartphones , Internetworking (Telecommunication) , Computer networks -- Security measures , XML (Document markup language) , Microsoft .NET Framework , Java (Computer program language)
- Description: The capacity to engage in web services transactions on smartphones is growing as these devices become increasingly powerful and sophisticated. This capacity for mobile web services is being realised through mobile applications that consume web services hosted on larger computing devices. This thesis investigates the effect that end-to-end web services security has on the interoperability between mobile web services requesters and traditional web services providers. SOAP web services are the preferred web services approach for this investigation. Although WS-Security is recognised as demanding on mobile hardware and network resources, the selection of appropriate WS-Security mechanisms lessens this burden. An attempt to implement such mechanisms on smartphones is carried out via an experiment. Smartphones are selected as the mobile device type used in the experiment. The experiment is conducted on the Java Micro Edition (Java ME) and the .NET Compact Framework (.NET CF) smartphone platforms. The experiment shows that the implementation of interoperable, end-to-end, mobile web services security on both platforms is reliant on third-party libraries. This reliance on third-party libraries results in poor developer support and exposes developers to the complexity of cryptography. The experiment also shows that there are no standard message size optimisation libraries available for both platforms. The implementation carried out on the .NET CF is also shown to rely on the underlying operating system. It is concluded that standard WS-Security APIs must be provided on smartphone platforms to avoid the problems of poor developer support and the additional complexity of cryptography. It is recommended that these APIs include a message optimisation technique. It is further recommended that WS-Security APIs be completely operating system independent when they are implemented in managed code. This thesis contributes by: providing a snapshot of mobile web services security; identifying the smartphone platform state of readiness for end-to-end secure web services; and providing a set of recommendations that may improve this state of readiness. These contributions are of increasing importance as mobile web services evolve from a simple point-to-point environment to the more complex enterprise environment.
- Full Text:
- Date Issued: 2008
An investigation into the factors affecting the pass rate of Grade Twelve learners with specific reference to the English subject : a case study of selected schools in Libode district
- Authors: Mzokwana, Nomnikelo Nondwe
- Date: 2008
- Subjects: Language and education -- South Africa -- Eastern Cape , School failure -- South Africa -- Eastern Cape , Education, Secondary -- South Africa -- Eastern Cape , English ability -- Testing , Education, Secondary -- South Africa -- Eastern Cape Case studies
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8215 , http://hdl.handle.net/10948/1022 , Language and education -- South Africa -- Eastern Cape , School failure -- South Africa -- Eastern Cape , Education, Secondary -- South Africa -- Eastern Cape , English ability -- Testing , Education, Secondary -- South Africa -- Eastern Cape Case studies
- Description: Libode district is a rural district within the Eastern Cape Province. It has forty-two senior secondary schools. All schools in Libode district offer the English subject as the first additional language (second language). Schools in Libode district use English as the medium of instruction. English as the medium of instruction was seen by the National Department of Education as an important aspect of teaching and learning and as an effective tool through which teachers and learners can express their knowledge. The pass rate of grade twelve learners had declined from 2004 showing very low success rates. The quality of grade twelve results in English had deprived learners of their future career prospects. This treatise investigated the factors that might have affected the pass rate of grade twelve learners with specific reference to the English subject: a case study of selected schools in Libode district. A sample of 165 grade 12 learners and six English teachers from randomly selected senior secondary schools participated in the study. The study used both quantitative and qualitative approaches. Some factors affecting the pass rate of grade twelve learners with specific reference to the English subject were identified which included the non-implementation of English as medium of instruction, the non-availability of teaching facilities, and the influence of the mother tongue on the English subject. The treatise offers some recommendations such as improved in-service training on language teaching, assessment techniques and learner-centredness, involvement of all education stakeholders in the implementation of English as a language of teaching and learning, and the provision of teaching facilities in schools.
- Full Text:
- Date Issued: 2008
- Authors: Mzokwana, Nomnikelo Nondwe
- Date: 2008
- Subjects: Language and education -- South Africa -- Eastern Cape , School failure -- South Africa -- Eastern Cape , Education, Secondary -- South Africa -- Eastern Cape , English ability -- Testing , Education, Secondary -- South Africa -- Eastern Cape Case studies
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8215 , http://hdl.handle.net/10948/1022 , Language and education -- South Africa -- Eastern Cape , School failure -- South Africa -- Eastern Cape , Education, Secondary -- South Africa -- Eastern Cape , English ability -- Testing , Education, Secondary -- South Africa -- Eastern Cape Case studies
- Description: Libode district is a rural district within the Eastern Cape Province. It has forty-two senior secondary schools. All schools in Libode district offer the English subject as the first additional language (second language). Schools in Libode district use English as the medium of instruction. English as the medium of instruction was seen by the National Department of Education as an important aspect of teaching and learning and as an effective tool through which teachers and learners can express their knowledge. The pass rate of grade twelve learners had declined from 2004 showing very low success rates. The quality of grade twelve results in English had deprived learners of their future career prospects. This treatise investigated the factors that might have affected the pass rate of grade twelve learners with specific reference to the English subject: a case study of selected schools in Libode district. A sample of 165 grade 12 learners and six English teachers from randomly selected senior secondary schools participated in the study. The study used both quantitative and qualitative approaches. Some factors affecting the pass rate of grade twelve learners with specific reference to the English subject were identified which included the non-implementation of English as medium of instruction, the non-availability of teaching facilities, and the influence of the mother tongue on the English subject. The treatise offers some recommendations such as improved in-service training on language teaching, assessment techniques and learner-centredness, involvement of all education stakeholders in the implementation of English as a language of teaching and learning, and the provision of teaching facilities in schools.
- Full Text:
- Date Issued: 2008
An investigation into the impact of performance management and development system on service delivery in the Eastern Cape: a case of the three Buffalo City hospitals
- Authors: Davashe, Cikizwa
- Date: 2008
- Subjects: Performance -- Evaluation , Municipal services -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Community development -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Administration
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11414 , http://hdl.handle.net/10353/307 , Performance -- Evaluation , Municipal services -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Community development -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Administration
- Description: In the Eastern Cape Department of Health the performance management and development system progress reviews are performed in a summative manner. This happens when a supervisor leaves out all the other progress reviews and conducts a final progress assessment and monitoring at the end of the year. It is worse when the performance agreements are not even signed during the start of a financial year, neither does a newly qualified employee sign. As a result employees are not appraised because there are no progress reviews that are entered on the Persal system. Employees miss an opportunity to be sent for training at the same time they are rewarded late or not at all. It is obvious that the managers do not understand the aims and objectives of the PMDS policy. The research was an assessment of the effectiveness of the performance management and development system in inculcating professional behaviour in the nursing staff in the three Buffalo City hospitals, namely, East London Hospital Complex, Grey and Bisho hospital. The aspects of the policy investigated were the performance reviews, the competency framework and the performance incentive scheme. This research is qualitative in nature. Data was collected using unstructured interviews and open ended questions. The population of this study involved selected Performance Management Managers, Quality Assurance Manager, Area Managers, junior nurses and clerks working in the Buffalo City Hospitals. The respondents of the study were selected using the stratified random sampling technique. Descriptive methods were used to analyse data. Confidentiality was highly maintained and consent form even distributed from the start of the research. The three Buffalo City hospitals are practising a balanced scorecard as a performance measurement tool. It is in the form of workplans that are different for different levels of employees such as the performance workplans, standard framework workplan and individual workplans. ix The study discovered that there is poor compliance in performing the performance reviews. The attention is on the appraisal aspect more than the development aspect. Also, there is a delay in taking the employees for training as a result they end up not being trained. The employees are not rewarded according to their performance. The PMDS policy states that employees that get a score of three are entitled to get a one percent and those that are rated a four or a five qualify for a performance bonus. The study found that the PMDS policy is not implemented well. It is recommended that the performance management manager and the quality assurance manager need to apply a radical strategic transformation and change management to address the challenges.
- Full Text:
- Date Issued: 2008
- Authors: Davashe, Cikizwa
- Date: 2008
- Subjects: Performance -- Evaluation , Municipal services -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Community development -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Administration
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11414 , http://hdl.handle.net/10353/307 , Performance -- Evaluation , Municipal services -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Community development -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Administration
- Description: In the Eastern Cape Department of Health the performance management and development system progress reviews are performed in a summative manner. This happens when a supervisor leaves out all the other progress reviews and conducts a final progress assessment and monitoring at the end of the year. It is worse when the performance agreements are not even signed during the start of a financial year, neither does a newly qualified employee sign. As a result employees are not appraised because there are no progress reviews that are entered on the Persal system. Employees miss an opportunity to be sent for training at the same time they are rewarded late or not at all. It is obvious that the managers do not understand the aims and objectives of the PMDS policy. The research was an assessment of the effectiveness of the performance management and development system in inculcating professional behaviour in the nursing staff in the three Buffalo City hospitals, namely, East London Hospital Complex, Grey and Bisho hospital. The aspects of the policy investigated were the performance reviews, the competency framework and the performance incentive scheme. This research is qualitative in nature. Data was collected using unstructured interviews and open ended questions. The population of this study involved selected Performance Management Managers, Quality Assurance Manager, Area Managers, junior nurses and clerks working in the Buffalo City Hospitals. The respondents of the study were selected using the stratified random sampling technique. Descriptive methods were used to analyse data. Confidentiality was highly maintained and consent form even distributed from the start of the research. The three Buffalo City hospitals are practising a balanced scorecard as a performance measurement tool. It is in the form of workplans that are different for different levels of employees such as the performance workplans, standard framework workplan and individual workplans. ix The study discovered that there is poor compliance in performing the performance reviews. The attention is on the appraisal aspect more than the development aspect. Also, there is a delay in taking the employees for training as a result they end up not being trained. The employees are not rewarded according to their performance. The PMDS policy states that employees that get a score of three are entitled to get a one percent and those that are rated a four or a five qualify for a performance bonus. The study found that the PMDS policy is not implemented well. It is recommended that the performance management manager and the quality assurance manager need to apply a radical strategic transformation and change management to address the challenges.
- Full Text:
- Date Issued: 2008
An investigation into the management of HIV/AIDS programmes at the workplace in a highly volatile environment: a case study of selected organisations in Harare, Zimbabwe
- Nyemba, Taurai Booth William
- Authors: Nyemba, Taurai Booth William
- Date: 2008
- Subjects: Social responsibility of business -- Zimbabwe , Industrial hygiene -- Zimbabwe , HIV infections -- Zimbabwe -- Prevention , AIDS (Disease) -- Prevention -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MCom (Industrial Psychology)
- Identifier: vital:11549 , http://hdl.handle.net/10353/177 , Social responsibility of business -- Zimbabwe , Industrial hygiene -- Zimbabwe , HIV infections -- Zimbabwe -- Prevention , AIDS (Disease) -- Prevention -- Zimbabwe
- Description: The HIV/AIDS pandemic has had a devastating effect in the world, as it is now rated as the world’s greatest killer since its appearance in the mid 1980s. A UNICEF Report (2005) states that sub Saharan Africa is the hardest hit with countries like Botswana, Zimbabwe, South Africa, Namibia and Mozambique having an average of one in every five adults being infected. Sub Saharan Africa has less than 3 percent of the world’s population but it has an estimated 65 percent of the world’s population living with HIV/AIDS as it has 26 million of the 40 million infected people worldwide. In May 2003 the Government of Zimbabwe declared HIV/AIDS a national emergency a move that seems to have yielded results as the HIV prevalence rate has come down from 26.1 percent to 18.6 percent in 2005 and further to 15.6 percent in 2007. The Ministry of Health and Child Welfare (2004) states that if the prevalence had continued at 26.1 percent, about two thirds of today’s 15- year-olds would die from this disease. The deterioration of the political, social and economic situation since 1999 and the withdrawal of donor development support due to policy differences require concerted efforts from all parties concerned, now, rather than later. More commitment must be shown by private and public sector organisations to active participation in the establishing of effective workplace programmes, to assist employees, for the pandemic has placed a heavy strain on the health delivery system, as AIDS patients occupy between 50 percent to 70 percent of all hospital beds. Furthermore, the pandemic is killing the youth at the prime of their working careers so the pandemic, while being a health problem also has a negative macro-economic impact which may lead to a developmental crisis. A study was conducted of six organisations, using two questionnaires, one for management and one for non-management level employees. The study investigates whether the organisations had HIV/AIDS programmes and whether such programmes were effective. The findings were that all six organisations had HIV/AIDS programmes in place. However, some of the programmes were not effective because the employees did not know of their existence. Furthermore, it was found that management initiated awareness programmes and made condoms available but the employees were not changing their risky behaviour.
- Full Text:
- Date Issued: 2008
- Authors: Nyemba, Taurai Booth William
- Date: 2008
- Subjects: Social responsibility of business -- Zimbabwe , Industrial hygiene -- Zimbabwe , HIV infections -- Zimbabwe -- Prevention , AIDS (Disease) -- Prevention -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MCom (Industrial Psychology)
- Identifier: vital:11549 , http://hdl.handle.net/10353/177 , Social responsibility of business -- Zimbabwe , Industrial hygiene -- Zimbabwe , HIV infections -- Zimbabwe -- Prevention , AIDS (Disease) -- Prevention -- Zimbabwe
- Description: The HIV/AIDS pandemic has had a devastating effect in the world, as it is now rated as the world’s greatest killer since its appearance in the mid 1980s. A UNICEF Report (2005) states that sub Saharan Africa is the hardest hit with countries like Botswana, Zimbabwe, South Africa, Namibia and Mozambique having an average of one in every five adults being infected. Sub Saharan Africa has less than 3 percent of the world’s population but it has an estimated 65 percent of the world’s population living with HIV/AIDS as it has 26 million of the 40 million infected people worldwide. In May 2003 the Government of Zimbabwe declared HIV/AIDS a national emergency a move that seems to have yielded results as the HIV prevalence rate has come down from 26.1 percent to 18.6 percent in 2005 and further to 15.6 percent in 2007. The Ministry of Health and Child Welfare (2004) states that if the prevalence had continued at 26.1 percent, about two thirds of today’s 15- year-olds would die from this disease. The deterioration of the political, social and economic situation since 1999 and the withdrawal of donor development support due to policy differences require concerted efforts from all parties concerned, now, rather than later. More commitment must be shown by private and public sector organisations to active participation in the establishing of effective workplace programmes, to assist employees, for the pandemic has placed a heavy strain on the health delivery system, as AIDS patients occupy between 50 percent to 70 percent of all hospital beds. Furthermore, the pandemic is killing the youth at the prime of their working careers so the pandemic, while being a health problem also has a negative macro-economic impact which may lead to a developmental crisis. A study was conducted of six organisations, using two questionnaires, one for management and one for non-management level employees. The study investigates whether the organisations had HIV/AIDS programmes and whether such programmes were effective. The findings were that all six organisations had HIV/AIDS programmes in place. However, some of the programmes were not effective because the employees did not know of their existence. Furthermore, it was found that management initiated awareness programmes and made condoms available but the employees were not changing their risky behaviour.
- Full Text:
- Date Issued: 2008
An investigation into the neuroprotective and neurotoxic properties of levodopa, dopamine and selegiline
- Authors: Scheepers, Mark Wesley
- Date: 2008
- Subjects: Parkinson's disease , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Neuroanatomy , Oxidative stress , Pharmacology , Dopamine , Selegiline , Dopaminergic neurons
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3789 , http://hdl.handle.net/10962/d1003267 , Parkinson's disease , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Neuroanatomy , Oxidative stress , Pharmacology , Dopamine , Selegiline , Dopaminergic neurons
- Description: Parkinson’s disease (PD) is a neurodegenerative disorder characterized by a profound loss of dopaminergic neurons from the substantia nigra (SN). Among the many pathogenic mechanisms thought to be responsible for the demise of these cells, dopamine (DA)-dependent oxidative stress and oxidative damage has taken center stage due to extensive experimental evidence showing that DA-derived reactive oxygen species (ROS) and oxidized DA metabolites are toxic to SN neurons. Despite its being the most efficacious drug for symptom reversal in PD, there is concern that levodopa (LD) may contribute to the neuronal degeneration and progression of PD by enhancing DA concentrations and turnover in surviving dopaminergic neurons. The present study investigates the potential neurotoxic and neuroprotective effects of DA in vitro. These effects are compared to the toxicity and neuroprotective effects observed in the rat striatum after the administration of LD and selegiline (SEL), both of which increase striatal DA levels. The effects of exogenous LD and/or SEL administration on both the oxidative stress caused by increased striatal iron (II) levels and its consequences have also been investigated. 6-Hydroxydopamine (6-OHDA) is a potent neurotoxin used to mimic dopaminergic degeneration in animal models of PD. The formation of 6-OHDA in vivo could destroy central dopaminergic nerve terminals and enhance the progression of PD. Inorganic studies using high performance liquid chromatography with electrochemical detection (HPLC-ECD) show that hydroxyl radicals can react with DA to form 6-OHDA in vitro. SEL results in a significant decrease in the formation of 6-OHDA in vitro, probably as a result of its antioxidant properties. However, the exogenous administration of LD, with or without SEL, either does not lead to the formation of striatal 6-OHDA in vivo or produces concentrations below the detection limit of the assay. This is despite the fact that striatal DA levels in these rats are significantly elevated (two-fold) compared to the control group. The auto-oxidation and monoamine oxidase (MAO)-mediated metabolism of DA causes an increase in the production of superoxide anions in whole rat brain homogenate in vitro. In addition to this, DA is able to enhance the production of hydroxyl radicals by Fenton chemistry (Fe(III)-EDTA/H2O2) in a cell free environment. Treatment with systemic LD elevates the production of striatal superoxide anions, but does not lead to a detectable increase in striatal hydroxyl radical production in vivo. The co-adminstration of SEL with LD is able to prevent the LD induced rise in striatal superoxide levels. It has been found that the presence of DA or 6-OHDA is able to reduce lipid peroxidation in whole rat brain homogenate induced by Fe(II)-EDTA/H2O2 and ascorbate (Fenton system). However, DA and 6-OHDA increase protein oxidation in rat brain homogenate, which is further increased in the presence of the Fenton system. In addition to this, the incubation of rat brain homogenate with DA or 6-OHDA is also accompanied by a significant reduction in the total GSH content of the homogenate. The exogenous administration of LD and/or SEL was found to have no detrimental effects on striatal lipids, proteins or total GSH levels. Systemic LD administration actually had a neuroprotective effect in the striatum by inhibiting iron (II) induced lipid peroxidation. Inorganic studies, including electrochemistry and the ferrozine assay show that DA and 6-OHDA are able to release iron from ferritin, as iron (II), and that DA can bind iron (III), a fact that may easily impede the availability of this metal ion for participation in the Fenton reaction. The binding of iron (III) by DA appears to discard the involvement of the Fenton reaction in the increased production of hydroxyl radicals induced by the addition of DA to mixtures containing Fe(II)-EDTA and hydrogen peroxide. 6-OHDA did not form a metal-ligand complex with iron (II) or iron (III). In addition to the antioxidant activity and MAO-B inhibitory activity of SEL, the iron binding studies show that SEL has weak iron (II) chelating activity and that it can also form complexes with iron (III). This may therefore be another mechanism involved in the neuroprotective action of SEL. The results of the pineal indole metabolism study show that the systemic administration of SEL increases the production of N-acetylserotonin (NAS) by the pineal gland. NAS has been demonstrated to be a potent antioxidant in the brain and protects against 6-OHDA induced toxicity. The results of this study show that DA displays antioxidant properties in relation to lipid eroxidation and exhibits pro-oxidant properties by causing an increase in the production of hydroxyl radicals and superoxide anions, as well as protein oxidation and a loss of total GSH content. Despite the toxic effects of DA in vitro, the treatment of rats with exogenous LD does not cause oxidative stress or oxidative damage. The results also show that LD and SEL have some neuroprotective properties which make these agents useful in the treatment of PD.
- Full Text:
- Date Issued: 2008
- Authors: Scheepers, Mark Wesley
- Date: 2008
- Subjects: Parkinson's disease , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Neuroanatomy , Oxidative stress , Pharmacology , Dopamine , Selegiline , Dopaminergic neurons
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3789 , http://hdl.handle.net/10962/d1003267 , Parkinson's disease , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Neuroanatomy , Oxidative stress , Pharmacology , Dopamine , Selegiline , Dopaminergic neurons
- Description: Parkinson’s disease (PD) is a neurodegenerative disorder characterized by a profound loss of dopaminergic neurons from the substantia nigra (SN). Among the many pathogenic mechanisms thought to be responsible for the demise of these cells, dopamine (DA)-dependent oxidative stress and oxidative damage has taken center stage due to extensive experimental evidence showing that DA-derived reactive oxygen species (ROS) and oxidized DA metabolites are toxic to SN neurons. Despite its being the most efficacious drug for symptom reversal in PD, there is concern that levodopa (LD) may contribute to the neuronal degeneration and progression of PD by enhancing DA concentrations and turnover in surviving dopaminergic neurons. The present study investigates the potential neurotoxic and neuroprotective effects of DA in vitro. These effects are compared to the toxicity and neuroprotective effects observed in the rat striatum after the administration of LD and selegiline (SEL), both of which increase striatal DA levels. The effects of exogenous LD and/or SEL administration on both the oxidative stress caused by increased striatal iron (II) levels and its consequences have also been investigated. 6-Hydroxydopamine (6-OHDA) is a potent neurotoxin used to mimic dopaminergic degeneration in animal models of PD. The formation of 6-OHDA in vivo could destroy central dopaminergic nerve terminals and enhance the progression of PD. Inorganic studies using high performance liquid chromatography with electrochemical detection (HPLC-ECD) show that hydroxyl radicals can react with DA to form 6-OHDA in vitro. SEL results in a significant decrease in the formation of 6-OHDA in vitro, probably as a result of its antioxidant properties. However, the exogenous administration of LD, with or without SEL, either does not lead to the formation of striatal 6-OHDA in vivo or produces concentrations below the detection limit of the assay. This is despite the fact that striatal DA levels in these rats are significantly elevated (two-fold) compared to the control group. The auto-oxidation and monoamine oxidase (MAO)-mediated metabolism of DA causes an increase in the production of superoxide anions in whole rat brain homogenate in vitro. In addition to this, DA is able to enhance the production of hydroxyl radicals by Fenton chemistry (Fe(III)-EDTA/H2O2) in a cell free environment. Treatment with systemic LD elevates the production of striatal superoxide anions, but does not lead to a detectable increase in striatal hydroxyl radical production in vivo. The co-adminstration of SEL with LD is able to prevent the LD induced rise in striatal superoxide levels. It has been found that the presence of DA or 6-OHDA is able to reduce lipid peroxidation in whole rat brain homogenate induced by Fe(II)-EDTA/H2O2 and ascorbate (Fenton system). However, DA and 6-OHDA increase protein oxidation in rat brain homogenate, which is further increased in the presence of the Fenton system. In addition to this, the incubation of rat brain homogenate with DA or 6-OHDA is also accompanied by a significant reduction in the total GSH content of the homogenate. The exogenous administration of LD and/or SEL was found to have no detrimental effects on striatal lipids, proteins or total GSH levels. Systemic LD administration actually had a neuroprotective effect in the striatum by inhibiting iron (II) induced lipid peroxidation. Inorganic studies, including electrochemistry and the ferrozine assay show that DA and 6-OHDA are able to release iron from ferritin, as iron (II), and that DA can bind iron (III), a fact that may easily impede the availability of this metal ion for participation in the Fenton reaction. The binding of iron (III) by DA appears to discard the involvement of the Fenton reaction in the increased production of hydroxyl radicals induced by the addition of DA to mixtures containing Fe(II)-EDTA and hydrogen peroxide. 6-OHDA did not form a metal-ligand complex with iron (II) or iron (III). In addition to the antioxidant activity and MAO-B inhibitory activity of SEL, the iron binding studies show that SEL has weak iron (II) chelating activity and that it can also form complexes with iron (III). This may therefore be another mechanism involved in the neuroprotective action of SEL. The results of the pineal indole metabolism study show that the systemic administration of SEL increases the production of N-acetylserotonin (NAS) by the pineal gland. NAS has been demonstrated to be a potent antioxidant in the brain and protects against 6-OHDA induced toxicity. The results of this study show that DA displays antioxidant properties in relation to lipid eroxidation and exhibits pro-oxidant properties by causing an increase in the production of hydroxyl radicals and superoxide anions, as well as protein oxidation and a loss of total GSH content. Despite the toxic effects of DA in vitro, the treatment of rats with exogenous LD does not cause oxidative stress or oxidative damage. The results also show that LD and SEL have some neuroprotective properties which make these agents useful in the treatment of PD.
- Full Text:
- Date Issued: 2008
An investigation into the representation of the mentally ill in popular film
- Authors: Vermeulen, Monique
- Date: 2008
- Subjects: Mental illness in motion pictures , Mental illness , Mass media
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8403 , http://hdl.handle.net/10948/800 , Mental illness in motion pictures , Mental illness , Mass media
- Description: There is a common perception that media depiction of mental health and illness is overwhelmingly negative and inaccurate. Media portrayal of mental illness is also viewed as an important element in forming and influencing society’s attitudes towards mental health issues, although there is no causal link to prove this. People with mental illness are most commonly shown as being violent and aggressive. Movie stereotypes that contribute to the stigmatisation of mentally ill persons include the mental patient as rebellious free spirit, homicidal maniac, seductress, enlightened member of society, narcissistic parasite, and zoo specimen. The profession of psychiatry is, has always been, and will likely continue to be a much enjoyed subject among filmmakers and their audiences, as it tends to provide exciting and emotionally compelling opportunities to portray personal struggles feared by most of humanity. This research will analyse the entertainment media in an attempt to provide evidence to support the above statement. The research will, furthermore, analyse the manner in which entertainment media represent the mentally ill with reference to popular films invariably produced in the US
- Full Text:
- Date Issued: 2008
- Authors: Vermeulen, Monique
- Date: 2008
- Subjects: Mental illness in motion pictures , Mental illness , Mass media
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8403 , http://hdl.handle.net/10948/800 , Mental illness in motion pictures , Mental illness , Mass media
- Description: There is a common perception that media depiction of mental health and illness is overwhelmingly negative and inaccurate. Media portrayal of mental illness is also viewed as an important element in forming and influencing society’s attitudes towards mental health issues, although there is no causal link to prove this. People with mental illness are most commonly shown as being violent and aggressive. Movie stereotypes that contribute to the stigmatisation of mentally ill persons include the mental patient as rebellious free spirit, homicidal maniac, seductress, enlightened member of society, narcissistic parasite, and zoo specimen. The profession of psychiatry is, has always been, and will likely continue to be a much enjoyed subject among filmmakers and their audiences, as it tends to provide exciting and emotionally compelling opportunities to portray personal struggles feared by most of humanity. This research will analyse the entertainment media in an attempt to provide evidence to support the above statement. The research will, furthermore, analyse the manner in which entertainment media represent the mentally ill with reference to popular films invariably produced in the US
- Full Text:
- Date Issued: 2008
An investigation into the synergistic association between the major Clostridium cellulovorans cellulosomal endoglucanase and two hemicellulases on plant cell wall degradation
- Authors: Beukes, Natasha
- Date: 2008
- Subjects: Clostridium , Cellulose , Hemicellulose , Cellulase , Biomass conversion , Biomass energy -- South Africa , Energy crops -- South Africa , Bagasse -- Biodegradation , Pineapple -- Biodegradation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3968 , http://hdl.handle.net/10962/d1004027 , Clostridium , Cellulose , Hemicellulose , Cellulase , Biomass conversion , Biomass energy -- South Africa , Energy crops -- South Africa , Bagasse -- Biodegradation , Pineapple -- Biodegradation
- Description: The cellulosome is a multimeric enzyme complex that has the ability to metabolise a wide variety of carbonaceous compounds. Cellulosomal composition may vary according to the microbe’s nutritional requirement and allows for the anaerobic degradation of complex substrates. The complex substrates of interest in this research study were sugarcane bagasse and pineapple fibre waste, as they represent two important lignocellulosic, South African agricultural crops. The effective degradation of complex plant biomass wastes may present a valuable source of renewable compounds for the production of a variety of biofuels, for example bioethanol, and a variety of biocomposites of industrial importance. The identification of renewable energy sources for the production of biofuels is becoming increasingly important, as a result of the rapid depletion of the fossil fuels that are traditionally used as energy sources. An effective means of completely degrading lignocellulose biomass still remains elusive due to the complex heterogeneity of the substrate structure, and the fact that the effective degradation of the substrate requires a consortium of enzymes. The cellulosome not only provides a variety of enzymes with varying specificities, but also promote a close proximity between the catalytic components (enzymes). The close proximity between the enzymes promotes the synergistic degradation of complex plant biomass for the production of valuable energy products. Previous synergy studies have focused predominantly on the synergistic associations between cellulases; however, the synergy between hemicellulases has occasionally been documented. This research project established the synergistic associations between two Clostridium cellulovorans hemicellulases that may be incorporated into the cellulosome and a cellulosomal endoglucanase that is conserved in all cellulosomes. This research study indicated that there was indeed a synergistic degradation of the complex plant biomass (sugarcane bagasse and pineapple fibre). The degrees of synergy and the ratio of the enzymes varied between the two complex substrates. The initial degradation of the bagasse required the presence of all the enzymes and proceeded at an enhanced rate under sulphidogenic conditions; however, there was a low production of fermentable sugars. The low quantity of fermentable sugars produced by the degradation of the bagasse may be related to the chemical composition of the substrate. The sugarcane contains a high percentage of lignin forming a protective layer around the holocellulose, thus the glycosidic bonds are shielded extensively from enzymatic attack. In comparison, the initial degradation of the pineapple fibre required the action of hemicellulases, and proceeded at an enhanced rate under sulphidogenic conditions. The initial degradation of the pineapple fibre produced a substantially larger quantity of fermentable sugars in comparison to the bagasse. The higher production of fermentable sugars from the degradation of the pineapple fibre may be explained by the fact that this substrate may have a lower percentage of lignin than the bagasse, thus allowing a larger percentage of the glycosidic bonds to be exposed to enzymatic attack. The data obtained also indicated that the glycosidic bonds from the hemicellulosic components of the pineapple fibre shielded the glycosidic bonds of the cellulose component. The identification of the chemical components of the different substrates may allow for the initial development of an ideal enzyme complex (designer cellulosome) with enzymes in an ideal ratio with optimal synergy that will effectively degrade the complex plant biomass substrate.
- Full Text:
- Date Issued: 2008
- Authors: Beukes, Natasha
- Date: 2008
- Subjects: Clostridium , Cellulose , Hemicellulose , Cellulase , Biomass conversion , Biomass energy -- South Africa , Energy crops -- South Africa , Bagasse -- Biodegradation , Pineapple -- Biodegradation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3968 , http://hdl.handle.net/10962/d1004027 , Clostridium , Cellulose , Hemicellulose , Cellulase , Biomass conversion , Biomass energy -- South Africa , Energy crops -- South Africa , Bagasse -- Biodegradation , Pineapple -- Biodegradation
- Description: The cellulosome is a multimeric enzyme complex that has the ability to metabolise a wide variety of carbonaceous compounds. Cellulosomal composition may vary according to the microbe’s nutritional requirement and allows for the anaerobic degradation of complex substrates. The complex substrates of interest in this research study were sugarcane bagasse and pineapple fibre waste, as they represent two important lignocellulosic, South African agricultural crops. The effective degradation of complex plant biomass wastes may present a valuable source of renewable compounds for the production of a variety of biofuels, for example bioethanol, and a variety of biocomposites of industrial importance. The identification of renewable energy sources for the production of biofuels is becoming increasingly important, as a result of the rapid depletion of the fossil fuels that are traditionally used as energy sources. An effective means of completely degrading lignocellulose biomass still remains elusive due to the complex heterogeneity of the substrate structure, and the fact that the effective degradation of the substrate requires a consortium of enzymes. The cellulosome not only provides a variety of enzymes with varying specificities, but also promote a close proximity between the catalytic components (enzymes). The close proximity between the enzymes promotes the synergistic degradation of complex plant biomass for the production of valuable energy products. Previous synergy studies have focused predominantly on the synergistic associations between cellulases; however, the synergy between hemicellulases has occasionally been documented. This research project established the synergistic associations between two Clostridium cellulovorans hemicellulases that may be incorporated into the cellulosome and a cellulosomal endoglucanase that is conserved in all cellulosomes. This research study indicated that there was indeed a synergistic degradation of the complex plant biomass (sugarcane bagasse and pineapple fibre). The degrees of synergy and the ratio of the enzymes varied between the two complex substrates. The initial degradation of the bagasse required the presence of all the enzymes and proceeded at an enhanced rate under sulphidogenic conditions; however, there was a low production of fermentable sugars. The low quantity of fermentable sugars produced by the degradation of the bagasse may be related to the chemical composition of the substrate. The sugarcane contains a high percentage of lignin forming a protective layer around the holocellulose, thus the glycosidic bonds are shielded extensively from enzymatic attack. In comparison, the initial degradation of the pineapple fibre required the action of hemicellulases, and proceeded at an enhanced rate under sulphidogenic conditions. The initial degradation of the pineapple fibre produced a substantially larger quantity of fermentable sugars in comparison to the bagasse. The higher production of fermentable sugars from the degradation of the pineapple fibre may be explained by the fact that this substrate may have a lower percentage of lignin than the bagasse, thus allowing a larger percentage of the glycosidic bonds to be exposed to enzymatic attack. The data obtained also indicated that the glycosidic bonds from the hemicellulosic components of the pineapple fibre shielded the glycosidic bonds of the cellulose component. The identification of the chemical components of the different substrates may allow for the initial development of an ideal enzyme complex (designer cellulosome) with enzymes in an ideal ratio with optimal synergy that will effectively degrade the complex plant biomass substrate.
- Full Text:
- Date Issued: 2008
An investigation into the use of whistle-blowing as a means to curb unethical behaviour of police officers in the Nelson Mandela Bay
- Authors: Mboyi, Sabelo Advocate
- Date: 2008
- Subjects: Police -- South Africa , Whistle blowing -- South Africa , Misconduct in office -- South Africa
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8241 , http://hdl.handle.net/10948/760 , Police -- South Africa , Whistle blowing -- South Africa , Misconduct in office -- South Africa
- Description: The use of whistle-blowing as means to curb unethical behaviour of police officers in the Nelson Mandela Bay is investigated in this study. In order to investigate this, various instruments were used, these are interviews and questionnaires. However the objectives of the study were: - To examine the implementation of whistle-blowing in the SAPS. - To develop strategies and measures that can be used to encourage whistle-blowing in the SAPS. Broadly speaking, these objectives have been achieved by providing empirical evidence which shows that: - Unethical behaviour by police officers is the most ethical challenge facing police officers in the Nelson Mandela Bay Area. This is based on the findings which eminate from the interviews. - Whistle-blowing is used by police officers as an early warning system that alerts the superiors about misconduct before it is too late as it defects and deters wrongdoing. However, the study suggests various strategies and measures to assist the implementation of whistle-blowing. These strategies include: - Development of hotlines. - Assurance of confidentiality and anonymity of disclosures. - Response plan development. - Training development. - Regarding whistle-blowing as an ongoing communication. This study also indicates that misconduct by police officers in the Nelson Mandela Bay area is not high. While whistle-blowing is considered as a key tool in promoting individual responsibility and accountability among police officers. In conclusion, recommendations are provided which could assist the SAPS and individual police officers to improve ethical conduct, and for improved measures and mechanisms to deal with unethical behaviour of police officers and recommendations for improved implementation of whistle-blowing process.
- Full Text:
- Date Issued: 2008
- Authors: Mboyi, Sabelo Advocate
- Date: 2008
- Subjects: Police -- South Africa , Whistle blowing -- South Africa , Misconduct in office -- South Africa
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8241 , http://hdl.handle.net/10948/760 , Police -- South Africa , Whistle blowing -- South Africa , Misconduct in office -- South Africa
- Description: The use of whistle-blowing as means to curb unethical behaviour of police officers in the Nelson Mandela Bay is investigated in this study. In order to investigate this, various instruments were used, these are interviews and questionnaires. However the objectives of the study were: - To examine the implementation of whistle-blowing in the SAPS. - To develop strategies and measures that can be used to encourage whistle-blowing in the SAPS. Broadly speaking, these objectives have been achieved by providing empirical evidence which shows that: - Unethical behaviour by police officers is the most ethical challenge facing police officers in the Nelson Mandela Bay Area. This is based on the findings which eminate from the interviews. - Whistle-blowing is used by police officers as an early warning system that alerts the superiors about misconduct before it is too late as it defects and deters wrongdoing. However, the study suggests various strategies and measures to assist the implementation of whistle-blowing. These strategies include: - Development of hotlines. - Assurance of confidentiality and anonymity of disclosures. - Response plan development. - Training development. - Regarding whistle-blowing as an ongoing communication. This study also indicates that misconduct by police officers in the Nelson Mandela Bay area is not high. While whistle-blowing is considered as a key tool in promoting individual responsibility and accountability among police officers. In conclusion, recommendations are provided which could assist the SAPS and individual police officers to improve ethical conduct, and for improved measures and mechanisms to deal with unethical behaviour of police officers and recommendations for improved implementation of whistle-blowing process.
- Full Text:
- Date Issued: 2008
An investigation of illegal farm evictions in the Great Kei Local Municipality
- Sonjica, Kholekile Templeton
- Authors: Sonjica, Kholekile Templeton
- Date: 2008
- Subjects: Farm evictions -- Farm workers
- Language: English
- Type: Thesis , Masters , MA (Human Rights)
- Identifier: vital:11103 , http://hdl.handle.net/10353/103 , Farm evictions -- Farm workers
- Description: This research entails a case study on the investigation of illegal farm evictions in the Great Kei Local Municipality of the Eastern Cape. The study was propelled by the plight of people living and working on farms in South Africa who are always victims of illegal farm evictions. Such evictions in many an instance violate their basic human rights protected by South Africa’s constitution and many other international conventions. It is hoped that the findings and recommendations of the research will have a profound impact on how illegal farm evictions in future will be handled by those championing the rights of people living and working on farms. Similarly, there is hope that this study will create an interest in others to new broader issues of human rights protection. A closer look at concepts like constructive evictions is necessary because of their traumatic nature to their victims. The study is divided into five chapters. 1. Introduction This chapter provides a background, the purpose of the study, specific objectives or research questions, hypotheses or assumptions of the study, the significance of the study, justification or rationale of the study, delimitation of the study, literature review, methodology, ethical considerations, and the limitations of the study. 2. The history of farm evictions in South Africa This chapter gives an outline of farm evictions in South Africa from both the colonial and apartheid 3. The culture of human rights in South Africa This chapter examines the institutions and instruments that influence the human rights culture in South Africa. It focuses on the legislative framework of human rights. 4. Farm evictions in the Great Kei Local Municipality of the Eastern Cape This chapter discusses farm evictions in the Great Kei Local Municipality and South Africa in general between December 2001 and December 2006. A case study of the same municipality is the nucleus of this research. 5. Conclusion The evaluation, findings, and recommendations of the study form the greater part of the chapter.
- Full Text:
- Date Issued: 2008
- Authors: Sonjica, Kholekile Templeton
- Date: 2008
- Subjects: Farm evictions -- Farm workers
- Language: English
- Type: Thesis , Masters , MA (Human Rights)
- Identifier: vital:11103 , http://hdl.handle.net/10353/103 , Farm evictions -- Farm workers
- Description: This research entails a case study on the investigation of illegal farm evictions in the Great Kei Local Municipality of the Eastern Cape. The study was propelled by the plight of people living and working on farms in South Africa who are always victims of illegal farm evictions. Such evictions in many an instance violate their basic human rights protected by South Africa’s constitution and many other international conventions. It is hoped that the findings and recommendations of the research will have a profound impact on how illegal farm evictions in future will be handled by those championing the rights of people living and working on farms. Similarly, there is hope that this study will create an interest in others to new broader issues of human rights protection. A closer look at concepts like constructive evictions is necessary because of their traumatic nature to their victims. The study is divided into five chapters. 1. Introduction This chapter provides a background, the purpose of the study, specific objectives or research questions, hypotheses or assumptions of the study, the significance of the study, justification or rationale of the study, delimitation of the study, literature review, methodology, ethical considerations, and the limitations of the study. 2. The history of farm evictions in South Africa This chapter gives an outline of farm evictions in South Africa from both the colonial and apartheid 3. The culture of human rights in South Africa This chapter examines the institutions and instruments that influence the human rights culture in South Africa. It focuses on the legislative framework of human rights. 4. Farm evictions in the Great Kei Local Municipality of the Eastern Cape This chapter discusses farm evictions in the Great Kei Local Municipality and South Africa in general between December 2001 and December 2006. A case study of the same municipality is the nucleus of this research. 5. Conclusion The evaluation, findings, and recommendations of the study form the greater part of the chapter.
- Full Text:
- Date Issued: 2008
An investigation of masculinity in J. M. Coetzee's disgrace (1999)
- Authors: Kok, Marina Susan
- Date: 2008
- Subjects: Coetzee, J. M., 1940- -- Criticism and interpretation , Masculinity in literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8463 , http://hdl.handle.net/10948/783 , Coetzee, J. M., 1940- -- Criticism and interpretation , Masculinity in literature
- Description: The study of Masculinity is a fairly new phenomenon which developed as a refinement of gender studies. The theoretical frameworks on masculinity are still under development and are often severely contested. This study proposes to examine the dynamics of masculinity studies, critiquing the notion of ‘masculinity in crisis’. The premise of the masculinity in crisis debate is that men are experiencing an increasing sense of powerlessness. This dissertation aims to examine the masculine identities represented in Disgrace and to test whether they are better understood through the lens of masculine theory. The disgraceful situation of David Lurie is arguably not merely a result of hapless circumstance, but rather illustrates significant parallels with the crisis debate. The basic premise of this debate is that the behaviour previously condoned and applauded as healthy 'manliness' is now being labelled as anti-social and destructive. It is not just masculine roles that are under threat. Other forces behind the crisis are “the loss of masculine rights and changes in the pattern of employment” (Beynon 2002:75). One view held by theorists of masculinity studies is that for real change to occur, a fluid definition of masculine identity is needed. In J.M. Coetzee’s Disgrace (1999), the main protagonist is David Lurie. He may arguably be said to typify a masculinity that is in a state of crisis because of his stoic refusal throughout the novel to change or reform: “I was offered a compromise, which I would not accept”, he says, and: “Re-education. Reformation of the character. The code word was counselling” (1999:66). His aversion to such counselling and refusal to compromise mark his resistance to change.
- Full Text:
- Date Issued: 2008
- Authors: Kok, Marina Susan
- Date: 2008
- Subjects: Coetzee, J. M., 1940- -- Criticism and interpretation , Masculinity in literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8463 , http://hdl.handle.net/10948/783 , Coetzee, J. M., 1940- -- Criticism and interpretation , Masculinity in literature
- Description: The study of Masculinity is a fairly new phenomenon which developed as a refinement of gender studies. The theoretical frameworks on masculinity are still under development and are often severely contested. This study proposes to examine the dynamics of masculinity studies, critiquing the notion of ‘masculinity in crisis’. The premise of the masculinity in crisis debate is that men are experiencing an increasing sense of powerlessness. This dissertation aims to examine the masculine identities represented in Disgrace and to test whether they are better understood through the lens of masculine theory. The disgraceful situation of David Lurie is arguably not merely a result of hapless circumstance, but rather illustrates significant parallels with the crisis debate. The basic premise of this debate is that the behaviour previously condoned and applauded as healthy 'manliness' is now being labelled as anti-social and destructive. It is not just masculine roles that are under threat. Other forces behind the crisis are “the loss of masculine rights and changes in the pattern of employment” (Beynon 2002:75). One view held by theorists of masculinity studies is that for real change to occur, a fluid definition of masculine identity is needed. In J.M. Coetzee’s Disgrace (1999), the main protagonist is David Lurie. He may arguably be said to typify a masculinity that is in a state of crisis because of his stoic refusal throughout the novel to change or reform: “I was offered a compromise, which I would not accept”, he says, and: “Re-education. Reformation of the character. The code word was counselling” (1999:66). His aversion to such counselling and refusal to compromise mark his resistance to change.
- Full Text:
- Date Issued: 2008
An investigation of student leadership in an independent school in the Eastern Cape: ʺdo alternative forms of leadership (such as servant leadership) emerge through community building?ʺ
- Authors: Knott-Craig, Ian Duncan
- Date: 2008
- Subjects: Kingswood College Private schools -- South Africa -- Eastern Cape Servant leadership -- South Africa -- Eastern Cape Educational leadership -- South Africa -- Eastern Cape Community and school -- South Africa -- Eastern Cape Student volunteers in social service -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1643 , http://hdl.handle.net/10962/d1003525
- Description: Significant changes have taken place in recent years in leadership theory and practice world wide. Theorizations of effective leadership have evolved from being authoritarian and task-centered to a model in which leaders are encouraged to look beyond their self-interest and prioritize the interests of the group. This study investigates the development of an alternative form of leadership through community building in two male school boarding houses. It attempts to ascertain whether students are able to work collaboratively towards developing an environment conducive to servant leadership. Structured according to the transformative research paradigm, this action research study was conducted in an independent school, Kingswood College, in Grahamstown, South Africa. The College is a traditional independent co-educational school that prides itself on producing leaders. As the school was in the process of reviewing its leadership system, it became an appropriate site to investigate the development of community and to explore possibilities for the emergence of an alternative form of leadership that would reflect the attributes of servant leadership. The participants in the study were volunteers from two boarding houses, who agreed to reflect on their perceptions and experiences of the way in which their houses functioned. My research findings show that through their willingness to engage in moral dialogue, students can transform their boarding houses into closely-knit communities bound together by shared values and beliefs. Closer relationships make for better understanding. As the leaders take on the responsibility of caring for their juniors, a moral obligation begins to manifest itself. Leaders will display the attributes of servant leadership if they are prepared to acknowledge in practice this moral obligation to serve others.
- Full Text:
- Date Issued: 2008
- Authors: Knott-Craig, Ian Duncan
- Date: 2008
- Subjects: Kingswood College Private schools -- South Africa -- Eastern Cape Servant leadership -- South Africa -- Eastern Cape Educational leadership -- South Africa -- Eastern Cape Community and school -- South Africa -- Eastern Cape Student volunteers in social service -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1643 , http://hdl.handle.net/10962/d1003525
- Description: Significant changes have taken place in recent years in leadership theory and practice world wide. Theorizations of effective leadership have evolved from being authoritarian and task-centered to a model in which leaders are encouraged to look beyond their self-interest and prioritize the interests of the group. This study investigates the development of an alternative form of leadership through community building in two male school boarding houses. It attempts to ascertain whether students are able to work collaboratively towards developing an environment conducive to servant leadership. Structured according to the transformative research paradigm, this action research study was conducted in an independent school, Kingswood College, in Grahamstown, South Africa. The College is a traditional independent co-educational school that prides itself on producing leaders. As the school was in the process of reviewing its leadership system, it became an appropriate site to investigate the development of community and to explore possibilities for the emergence of an alternative form of leadership that would reflect the attributes of servant leadership. The participants in the study were volunteers from two boarding houses, who agreed to reflect on their perceptions and experiences of the way in which their houses functioned. My research findings show that through their willingness to engage in moral dialogue, students can transform their boarding houses into closely-knit communities bound together by shared values and beliefs. Closer relationships make for better understanding. As the leaders take on the responsibility of caring for their juniors, a moral obligation begins to manifest itself. Leaders will display the attributes of servant leadership if they are prepared to acknowledge in practice this moral obligation to serve others.
- Full Text:
- Date Issued: 2008
An investigation of the antimicrobial and antifouling properties of marine algal metabolites
- Authors: Mann, Maryssa Gudrun Ailsa
- Date: 2008 , 2013-07-11
- Subjects: Anti-infective agents , Marine metabolites -- Therapeutic use , Marine algae , Pharmacognosy , Fouling , Marine fouling organisms
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3831 , http://hdl.handle.net/10962/d1007465 , Anti-infective agents , Marine metabolites -- Therapeutic use , Marine algae , Pharmacognosy , Fouling , Marine fouling organisms
- Description: Prevention of the accumulation of undesirable biological material i.e. biofouling upon a solid surface requires the use of antifouling systems. The solid surface may be a contact lens, an off shore oil rig or a living organism. When chemicals are employed as a mechanism of defense against biofouling, the agents involved are known as antifouling agents. Marine algae must protect themselves from fouling organisms and it is thought that one of the mechanisms used by these organisms is the production of secondary metabolites with an array of biological activities. In vitro studies have shown numerous compounds isolated from marine algae to possess antibacterial, antifungal and antimacrofouling activity. The aim of this study was to evaluate the secondary metabolite extracts of selected Southern African marine macro-algae as a potential source of compounds that inhibit biofilm formation and that could be used as antifouling agents. In this project, marine macro-algae were collected from various sites along the South African coastline. Their extracts were screened for antimicrobial activity against four ubiquitous microorganisms, Staphylococcus aureus, Klebsiella pneumoniae, Mycobacterium aurm and Candida albicans. Results of screening assays guided the fractionation of two Rhodophyta, Plocamium corallorhiza and Laurencia flexuosa. The algae were fractionated using silica gel column chromatography and compounds were isolated by semi-preparative normal phase HPLC. Compound characterization was performed using UV, IR and advanced one- and two-dimensional NMR (¹H, ¹³C NMR, COSY, HSQC, HMBC and NOESY) spectroscopy and mass spectrometry. Ten halogenated monoterpenes including four members of the small class of halogenated monoterpene aldehydes were isolated from extracts of P. corallorhiza. The compounds isolated included the known compounds 3,4,6,7-tetrachloro-3,7-dimethyl-1-octene; 4,6-dibromo-1, 1-dichloro-3,7 -dimethyl-2E,7 octadiene; 4,8-d ibromo-1,1,7 -trichloro-3, 7-dimethyl-2,5Eoctadiene;1 ,4,8-tribromo-3, 7 -dichloro-3,7-dimethyl-1 E,5E-octadiene; 8-bremo-6, 7-dichloro-3,7-dimethyl-octa-2E,4E-dienal; 4-Bromo-8-chloro-3,7-dimethyl-octa-2E,6E-dienal; 4,6- Dibromo-3,7-dimethyl-octa-2E,7-dienal; 2,4-dichloro-1-(2-chlorovinyl)-1-methyl-5-methylidene-cyclohexane and two new metabolites 4,8-chloro-3,7-dimethyl-2Z,4,6Z-octatrien-1-al and Compound 3.47. Methodology was developed for the chemical derivatization and mass spectrometric analysis of the aldehydic compounds, The aldehyde trapping reagent 0-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride was used to derivatize the molecules, stabilizing them and allowing for their complete characterization. From Laurencia flexuosa a new cuparene sesquiterpene 4-bremo-2-(5-hydroxy-1,2,2- trimethylcyclopent-3-enyl)-5-methylphenol was isolated along with two geometric isomers of the vinyl acetylene bromofucin , An halogenated monoterpene 3S*,4R*-1-bromo-3,4,8-trichloro-9-dichloromethyl-1-E,5-E,7-Z-octatriene was also isolated but was suspected to be a contaminant and an investigation into its biological source revealed that it originated from Plocamium suhrii. A third alga, Martensia elegans was extracted based on published reports of antimicrobial compounds in related species. A new a-alkyl malate derivative was isolated and characterized. Selected compounds isolated during the course of the study were employed in preliminary assays that tested their ability to inhibit biofilm formation by Pseudomonas aeruginosa. The halogenated monoterpenes isolated from the Plocamium species were the only active compounds. 3S*,4R*-1-bromo-3,4,S-trichloro-g-dichloromethyl-1-E,5-E,7-octatriene from P. suhrii inhibited biofilm formation through antibacterial activity on planktonic cells but could not prevent biofilm formation when employed as a film on the surface of microtitre plate wells. 1,4,8-tribromo-3,7-dichloro-3,7-dimethyl-1E,5E-octadiene and 4,6-dibromo-1,1-dichloro-3,7-dimethyl-2E,7-octadiene inhibited biofilm formation when applied as a film to the microtitre plate wells but had no significant antibacterial activity. No potential antifouling agents were identified in this project but the antimicrobial activity exhibited by the crude algal extracts was highly encouraging and a number of new research areas have been identified. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2008
- Authors: Mann, Maryssa Gudrun Ailsa
- Date: 2008 , 2013-07-11
- Subjects: Anti-infective agents , Marine metabolites -- Therapeutic use , Marine algae , Pharmacognosy , Fouling , Marine fouling organisms
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3831 , http://hdl.handle.net/10962/d1007465 , Anti-infective agents , Marine metabolites -- Therapeutic use , Marine algae , Pharmacognosy , Fouling , Marine fouling organisms
- Description: Prevention of the accumulation of undesirable biological material i.e. biofouling upon a solid surface requires the use of antifouling systems. The solid surface may be a contact lens, an off shore oil rig or a living organism. When chemicals are employed as a mechanism of defense against biofouling, the agents involved are known as antifouling agents. Marine algae must protect themselves from fouling organisms and it is thought that one of the mechanisms used by these organisms is the production of secondary metabolites with an array of biological activities. In vitro studies have shown numerous compounds isolated from marine algae to possess antibacterial, antifungal and antimacrofouling activity. The aim of this study was to evaluate the secondary metabolite extracts of selected Southern African marine macro-algae as a potential source of compounds that inhibit biofilm formation and that could be used as antifouling agents. In this project, marine macro-algae were collected from various sites along the South African coastline. Their extracts were screened for antimicrobial activity against four ubiquitous microorganisms, Staphylococcus aureus, Klebsiella pneumoniae, Mycobacterium aurm and Candida albicans. Results of screening assays guided the fractionation of two Rhodophyta, Plocamium corallorhiza and Laurencia flexuosa. The algae were fractionated using silica gel column chromatography and compounds were isolated by semi-preparative normal phase HPLC. Compound characterization was performed using UV, IR and advanced one- and two-dimensional NMR (¹H, ¹³C NMR, COSY, HSQC, HMBC and NOESY) spectroscopy and mass spectrometry. Ten halogenated monoterpenes including four members of the small class of halogenated monoterpene aldehydes were isolated from extracts of P. corallorhiza. The compounds isolated included the known compounds 3,4,6,7-tetrachloro-3,7-dimethyl-1-octene; 4,6-dibromo-1, 1-dichloro-3,7 -dimethyl-2E,7 octadiene; 4,8-d ibromo-1,1,7 -trichloro-3, 7-dimethyl-2,5Eoctadiene;1 ,4,8-tribromo-3, 7 -dichloro-3,7-dimethyl-1 E,5E-octadiene; 8-bremo-6, 7-dichloro-3,7-dimethyl-octa-2E,4E-dienal; 4-Bromo-8-chloro-3,7-dimethyl-octa-2E,6E-dienal; 4,6- Dibromo-3,7-dimethyl-octa-2E,7-dienal; 2,4-dichloro-1-(2-chlorovinyl)-1-methyl-5-methylidene-cyclohexane and two new metabolites 4,8-chloro-3,7-dimethyl-2Z,4,6Z-octatrien-1-al and Compound 3.47. Methodology was developed for the chemical derivatization and mass spectrometric analysis of the aldehydic compounds, The aldehyde trapping reagent 0-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine hydrochloride was used to derivatize the molecules, stabilizing them and allowing for their complete characterization. From Laurencia flexuosa a new cuparene sesquiterpene 4-bremo-2-(5-hydroxy-1,2,2- trimethylcyclopent-3-enyl)-5-methylphenol was isolated along with two geometric isomers of the vinyl acetylene bromofucin , An halogenated monoterpene 3S*,4R*-1-bromo-3,4,8-trichloro-9-dichloromethyl-1-E,5-E,7-Z-octatriene was also isolated but was suspected to be a contaminant and an investigation into its biological source revealed that it originated from Plocamium suhrii. A third alga, Martensia elegans was extracted based on published reports of antimicrobial compounds in related species. A new a-alkyl malate derivative was isolated and characterized. Selected compounds isolated during the course of the study were employed in preliminary assays that tested their ability to inhibit biofilm formation by Pseudomonas aeruginosa. The halogenated monoterpenes isolated from the Plocamium species were the only active compounds. 3S*,4R*-1-bromo-3,4,S-trichloro-g-dichloromethyl-1-E,5-E,7-octatriene from P. suhrii inhibited biofilm formation through antibacterial activity on planktonic cells but could not prevent biofilm formation when employed as a film on the surface of microtitre plate wells. 1,4,8-tribromo-3,7-dichloro-3,7-dimethyl-1E,5E-octadiene and 4,6-dibromo-1,1-dichloro-3,7-dimethyl-2E,7-octadiene inhibited biofilm formation when applied as a film to the microtitre plate wells but had no significant antibacterial activity. No potential antifouling agents were identified in this project but the antimicrobial activity exhibited by the crude algal extracts was highly encouraging and a number of new research areas have been identified. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2008
An investigation of the educational aspirations of high school female learners
- Authors: Willemse, Anneley
- Date: 2008
- Subjects: Women -- Education Student aspirations Vocational interests High school students Sex discrimination in education Sex differences in education Teenage girls -- Education
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1833 , http://hdl.handle.net/10962/d1004301
- Description: Researchers hold numerous perceptions of the educational aspirations and future career choices of teenage girls. Studies argue that factors such as the curriculum, teachers' and parents' attitudes, the impact of HIV/AIDS, and teenage pregnancy, influence girls' future educational and occupational hopes and dreams either positively or negatively. Other researchers claim that learners' career choice is limited by their potential and school performance. The existing literature also suggests that girls have lower self-esteem and levels of achievement than boys. This research seeks to gain insight into high school girls' perceived academic and vocational prospects. The research was carried out in an interpretive paradigm. Six secondary school female learners from one school participated in the study. Semistructured interviews were the core method of data collection, supplemented by questionnaires and a focus group interview. As teenagers, the girls were expected to already have started to think about their future hopes and dreams. The findings revealed that all the girls seemed to experience school as a place where they could acquire knowledge about what they needed to make them autonomous and successful in adult life. For them, their parents remained their major significant others. They regarded fear of poverty as a major factor motivating them to achieve their educational and vocational aspirations. Peer pressure appeared not to be a major determinant of these girls' successes in school. The girls believed that there is a relationship between their academic performance and their future vocational choice. In addition, the girls did not see boys as a threat to their climbing the ladder of success.
- Full Text:
- Date Issued: 2008
- Authors: Willemse, Anneley
- Date: 2008
- Subjects: Women -- Education Student aspirations Vocational interests High school students Sex discrimination in education Sex differences in education Teenage girls -- Education
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1833 , http://hdl.handle.net/10962/d1004301
- Description: Researchers hold numerous perceptions of the educational aspirations and future career choices of teenage girls. Studies argue that factors such as the curriculum, teachers' and parents' attitudes, the impact of HIV/AIDS, and teenage pregnancy, influence girls' future educational and occupational hopes and dreams either positively or negatively. Other researchers claim that learners' career choice is limited by their potential and school performance. The existing literature also suggests that girls have lower self-esteem and levels of achievement than boys. This research seeks to gain insight into high school girls' perceived academic and vocational prospects. The research was carried out in an interpretive paradigm. Six secondary school female learners from one school participated in the study. Semistructured interviews were the core method of data collection, supplemented by questionnaires and a focus group interview. As teenagers, the girls were expected to already have started to think about their future hopes and dreams. The findings revealed that all the girls seemed to experience school as a place where they could acquire knowledge about what they needed to make them autonomous and successful in adult life. For them, their parents remained their major significant others. They regarded fear of poverty as a major factor motivating them to achieve their educational and vocational aspirations. Peer pressure appeared not to be a major determinant of these girls' successes in school. The girls believed that there is a relationship between their academic performance and their future vocational choice. In addition, the girls did not see boys as a threat to their climbing the ladder of success.
- Full Text:
- Date Issued: 2008
An investigation of the implementation of the thematic approach in Namibian lower primary classrooms: a case study
- Authors: Amukushu-Niipare, Alina
- Date: 2008
- Subjects: Education, Elementary -- Namibia -- Case studies Teaching -- Namibia -- Case studies Education -- Namibia -- Case studies Educational change -- Namibia -- Case studies School integration -- Namibia -- Case studies Curriculum planning -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1651 , http://hdl.handle.net/10962/d1003534
- Description: This study focuses on the implementation of a thematic approach in the Namibian Lower Primary Phase of schooling. The purpose of the study is to investigate teachers’ perceptions and understanding of the thematic approach and also to explore how teachers plan and implement a thematic approach in their classrooms. It is argued that a thematic approach allows for a combination of subjects that integrate content across the curriculum in such a way that learners can see the relations among concepts and so build up their knowledge in a more meaningful way. The work was done in a qualitative paradigm using a case study approach. Findings reveal that the majority of teachers have a shallow conceptual understanding of the principles of a thematic approach and this causes difficulties in their practice. The investigation concludes that in order for teachers to deepen their conceptual understanding of the thematic approach, follow-up workshops are necessary to help them develop appropriate strategies for their classrooms.
- Full Text:
- Date Issued: 2008
- Authors: Amukushu-Niipare, Alina
- Date: 2008
- Subjects: Education, Elementary -- Namibia -- Case studies Teaching -- Namibia -- Case studies Education -- Namibia -- Case studies Educational change -- Namibia -- Case studies School integration -- Namibia -- Case studies Curriculum planning -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1651 , http://hdl.handle.net/10962/d1003534
- Description: This study focuses on the implementation of a thematic approach in the Namibian Lower Primary Phase of schooling. The purpose of the study is to investigate teachers’ perceptions and understanding of the thematic approach and also to explore how teachers plan and implement a thematic approach in their classrooms. It is argued that a thematic approach allows for a combination of subjects that integrate content across the curriculum in such a way that learners can see the relations among concepts and so build up their knowledge in a more meaningful way. The work was done in a qualitative paradigm using a case study approach. Findings reveal that the majority of teachers have a shallow conceptual understanding of the principles of a thematic approach and this causes difficulties in their practice. The investigation concludes that in order for teachers to deepen their conceptual understanding of the thematic approach, follow-up workshops are necessary to help them develop appropriate strategies for their classrooms.
- Full Text:
- Date Issued: 2008
An investigation of the provision of the water and sanitation services after the devolution of powers and functions in 2003 to selected municipalities in the Eastern Cape Province
- Authors: Mama, Mandisa Wongiwe
- Date: 2008
- Subjects: Local government -- South Africa -- Eastern Cape , Water-supply, Rural -- South Africa -- Eastern Cape , Sanitation, Rural -- South Africa -- Eastern Cape , Municipal water supply -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11646 , http://hdl.handle.net/10353/215 , Local government -- South Africa -- Eastern Cape , Water-supply, Rural -- South Africa -- Eastern Cape , Sanitation, Rural -- South Africa -- Eastern Cape , Municipal water supply -- South Africa -- Eastern Cape
- Description: The Republic of South Africa embarked on devolution of specific powers to municipal authorities due to the fact that municipalities are a sphere of government which is at the door step of the citizens. Among the powers that were devolved was the authority to regulate on the rendering of water and services to communities. From now henceforth in this study, water and sanitation services will be referred to as water services. The rural villages that had no access to water services during the previous dispensation were rapidly rendered with these services when the transformed Department of Water Affairs and Forestry took a decision to provide the services on its own in order to give space for the transformation of the local sphere of government such that these municipal X authorities are able to manage the load of the allocation of such functions mainly and to close the vacuum so that there is no gap as to who should be responsible for water provision in rural villages whilst the restructuring of municipalities to include the rural villages as part of the transformation process takes place. A decline in the pace rendering water services to the previously disadvantaged rural communities was noticed after the devolution of water services to municipal authorities and by implication once hands were changed. This left those rural communities that had no access to water services still without the desired water services and those that had water services provided left midway with dry water schemes and dysfunctional infrastructure. This study therefore seeks to uproot the cause for the deceleration of water services once it was devolved to municipal authorities. This decline was noticed by the researcher hence the study seeks to attempt providing alternatives and lasting solutions primarily because water services are essential services and water is life. The main objective of the study is to investigate factors that cause the deceleration of water supply and the slow movement in the acceleration of sanitation services in order to provide alternatives that may yield results. Given the above broad objective this study further aims at examining the following factors: The correlation in funding made available by the central government and the financial resources available to municipalities to perform the function in order to render this service properly. Technical support available to municipalities. Relevant legislation, its policies and its impact on the implementation of the service XI. The correlation between accountability, democratization and community participation on standards and quality of the service to actual outputs. Improvement of service delivery and its relationship with transparency and efficiency. Relatedness of poverty to non provision of water services. The relatedness of poverty, lack of basic services to influx in the cities. Relatedness of the quality of the water services to the outbreak of diseases
- Full Text:
- Date Issued: 2008
- Authors: Mama, Mandisa Wongiwe
- Date: 2008
- Subjects: Local government -- South Africa -- Eastern Cape , Water-supply, Rural -- South Africa -- Eastern Cape , Sanitation, Rural -- South Africa -- Eastern Cape , Municipal water supply -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11646 , http://hdl.handle.net/10353/215 , Local government -- South Africa -- Eastern Cape , Water-supply, Rural -- South Africa -- Eastern Cape , Sanitation, Rural -- South Africa -- Eastern Cape , Municipal water supply -- South Africa -- Eastern Cape
- Description: The Republic of South Africa embarked on devolution of specific powers to municipal authorities due to the fact that municipalities are a sphere of government which is at the door step of the citizens. Among the powers that were devolved was the authority to regulate on the rendering of water and services to communities. From now henceforth in this study, water and sanitation services will be referred to as water services. The rural villages that had no access to water services during the previous dispensation were rapidly rendered with these services when the transformed Department of Water Affairs and Forestry took a decision to provide the services on its own in order to give space for the transformation of the local sphere of government such that these municipal X authorities are able to manage the load of the allocation of such functions mainly and to close the vacuum so that there is no gap as to who should be responsible for water provision in rural villages whilst the restructuring of municipalities to include the rural villages as part of the transformation process takes place. A decline in the pace rendering water services to the previously disadvantaged rural communities was noticed after the devolution of water services to municipal authorities and by implication once hands were changed. This left those rural communities that had no access to water services still without the desired water services and those that had water services provided left midway with dry water schemes and dysfunctional infrastructure. This study therefore seeks to uproot the cause for the deceleration of water services once it was devolved to municipal authorities. This decline was noticed by the researcher hence the study seeks to attempt providing alternatives and lasting solutions primarily because water services are essential services and water is life. The main objective of the study is to investigate factors that cause the deceleration of water supply and the slow movement in the acceleration of sanitation services in order to provide alternatives that may yield results. Given the above broad objective this study further aims at examining the following factors: The correlation in funding made available by the central government and the financial resources available to municipalities to perform the function in order to render this service properly. Technical support available to municipalities. Relevant legislation, its policies and its impact on the implementation of the service XI. The correlation between accountability, democratization and community participation on standards and quality of the service to actual outputs. Improvement of service delivery and its relationship with transparency and efficiency. Relatedness of poverty to non provision of water services. The relatedness of poverty, lack of basic services to influx in the cities. Relatedness of the quality of the water services to the outbreak of diseases
- Full Text:
- Date Issued: 2008
An investigation of the roles of traditional leadership in the liberation struggle in southern Sudan from 1983-2004
- Authors: Kuol, Kuol Deng-Abot
- Date: 2008
- Subjects: Tribal government -- Sudan
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11647 , http://hdl.handle.net/10353/205 , Tribal government -- Sudan
- Description: The aim of this research study was to examine the role of traditional leadership during the upsurge of civil war in Southern Sudan. There has not been much research conducted in this field especially in Abiem County. Throughout the research process the role of traditional leaders has shown an unprecedented position during the liberation struggled characterized by huge support in terms of material support, manpower and political mobilization. The data analysis clearly reflected the roles of traditional leaders that occupied the historical perspective amidst the armed struggle waged by successive liberation movements and especially during the Sudan people’s Liberation Movement and Sudan People’s Liberation Army (SPLM/SPLA) from 1983 - 2004. It reflected on the vital roles of people’s support in the liberation movement represented by their traditional leaders, chiefs, elders, spiritual leaders, women and youth. Thus the perception of the role of traditional leadership in its different categories ha s shown a satisfactory and effective contribution to the war of liberation in Southern Sudan. However, in order to achieve the objectives, an investigation was conducted with various interviewees. As stated earlier, participants ranged from the chiefs and elders to local military and civil appointed administrators, women, youth and religious leaders. The main results of the study have profoundly asserted the important role of traditional leaders in the local government and their involvement in popular decision making and in local conflict management.
- Full Text:
- Date Issued: 2008
- Authors: Kuol, Kuol Deng-Abot
- Date: 2008
- Subjects: Tribal government -- Sudan
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11647 , http://hdl.handle.net/10353/205 , Tribal government -- Sudan
- Description: The aim of this research study was to examine the role of traditional leadership during the upsurge of civil war in Southern Sudan. There has not been much research conducted in this field especially in Abiem County. Throughout the research process the role of traditional leaders has shown an unprecedented position during the liberation struggled characterized by huge support in terms of material support, manpower and political mobilization. The data analysis clearly reflected the roles of traditional leaders that occupied the historical perspective amidst the armed struggle waged by successive liberation movements and especially during the Sudan people’s Liberation Movement and Sudan People’s Liberation Army (SPLM/SPLA) from 1983 - 2004. It reflected on the vital roles of people’s support in the liberation movement represented by their traditional leaders, chiefs, elders, spiritual leaders, women and youth. Thus the perception of the role of traditional leadership in its different categories ha s shown a satisfactory and effective contribution to the war of liberation in Southern Sudan. However, in order to achieve the objectives, an investigation was conducted with various interviewees. As stated earlier, participants ranged from the chiefs and elders to local military and civil appointed administrators, women, youth and religious leaders. The main results of the study have profoundly asserted the important role of traditional leaders in the local government and their involvement in popular decision making and in local conflict management.
- 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 investigation of the Ugandan publication Red Pepper: a case study from 2001-2004
- Authors: Opolot, Benedict
- Date: 2008
- Subjects: Red Pepper (Uganda) Sex in mass media -- Uganda Liberalism in mass media -- Uganda Homophobia -- Press coverage -- Uganda Mass media -- Political aspects -- Uganda Tabloid newspapers -- Uganda -- Case studies Newspapers -- Uganda -- 21st century Journalism -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3513 , http://hdl.handle.net/10962/d1007713
- Description: Red Pepper has been the subject of much discussion in Uganda, with some accounts describing it as a liberal mouthpiece, and others as pornography. This case study, therefore, sought to investigate Red Pepper as a media phenomenon in Uganda in the 21st century, specifically between 2001 and 2004. Employing quantitative and qualitative methodologies, it focused on the production process and the text. Although sexualised content dominate its pages, and news about issues such as the environment and education are near-absent, its managers describe the publication as legitimate, normative and consistent with liberal media standards. Accordingly, to interrogate Red Pepper in terms of its journalistic functions, selected debates associated with liberal approaches to news media, media political economy, tabloidisation, pornography and gendered relations were reviewed. The analysis entailed five phases. The first was a denotative or descriptive analysis, which focused on the publication's structure and content focus. This was followed by an interview with management, a broad content analysis to establish the incidence of predefined content categories expected of the tabloid, pornographic and liberal press and, lastly, a theme-based content analysis that sought to establish the potential meanings and framing of the dominant content categories of gossip and sexualised copy. Overall, the study found Red Pepper to be a misogynistic tabloid, having elements said to belong to pornography and homophobia. According to the findings, not only does Red Pepper fall short of a liberal understanding of a newspaper in terms of diversity of topics, provision of information and professional practice, it also does not fit the understanding of an alternative public sphere, mainly because it fails to challenge the patriarchal framing of sex, sexuality and gendered relations. This framing is undertaken deliberately as a means to securing economic rather than journalistic ideals to which the editors pay lip service. Consequently, the gossip and sexualised content are not problematised and as such discourses and power relations therein are not interrogated. Neither are inadequacies in local systems addressed nor corrective action mobilised as expected of some tabloids. All in all, the publication fronts superficial entertainment content that echoes particular gender constructions and patriarchal commonsense and entrenches the (undesirable) status quo which, ironically, it claims to challenge.
- Full Text:
- Date Issued: 2008
- Authors: Opolot, Benedict
- Date: 2008
- Subjects: Red Pepper (Uganda) Sex in mass media -- Uganda Liberalism in mass media -- Uganda Homophobia -- Press coverage -- Uganda Mass media -- Political aspects -- Uganda Tabloid newspapers -- Uganda -- Case studies Newspapers -- Uganda -- 21st century Journalism -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3513 , http://hdl.handle.net/10962/d1007713
- Description: Red Pepper has been the subject of much discussion in Uganda, with some accounts describing it as a liberal mouthpiece, and others as pornography. This case study, therefore, sought to investigate Red Pepper as a media phenomenon in Uganda in the 21st century, specifically between 2001 and 2004. Employing quantitative and qualitative methodologies, it focused on the production process and the text. Although sexualised content dominate its pages, and news about issues such as the environment and education are near-absent, its managers describe the publication as legitimate, normative and consistent with liberal media standards. Accordingly, to interrogate Red Pepper in terms of its journalistic functions, selected debates associated with liberal approaches to news media, media political economy, tabloidisation, pornography and gendered relations were reviewed. The analysis entailed five phases. The first was a denotative or descriptive analysis, which focused on the publication's structure and content focus. This was followed by an interview with management, a broad content analysis to establish the incidence of predefined content categories expected of the tabloid, pornographic and liberal press and, lastly, a theme-based content analysis that sought to establish the potential meanings and framing of the dominant content categories of gossip and sexualised copy. Overall, the study found Red Pepper to be a misogynistic tabloid, having elements said to belong to pornography and homophobia. According to the findings, not only does Red Pepper fall short of a liberal understanding of a newspaper in terms of diversity of topics, provision of information and professional practice, it also does not fit the understanding of an alternative public sphere, mainly because it fails to challenge the patriarchal framing of sex, sexuality and gendered relations. This framing is undertaken deliberately as a means to securing economic rather than journalistic ideals to which the editors pay lip service. Consequently, the gossip and sexualised content are not problematised and as such discourses and power relations therein are not interrogated. Neither are inadequacies in local systems addressed nor corrective action mobilised as expected of some tabloids. All in all, the publication fronts superficial entertainment content that echoes particular gender constructions and patriarchal commonsense and entrenches the (undesirable) status quo which, ironically, it claims to challenge.
- Full Text:
- Date Issued: 2008
An investigation of the usage of lean in a South African Revenue Services branch office
- Authors: Vazi, Malibongwe Matthews
- Date: 2008
- Subjects: Organizational effectiveness -- South Africa , Production management -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8726 , http://hdl.handle.net/10948/883 , Organizational effectiveness -- South Africa , Production management -- South Africa
- Description: Lean philosophy is based on the continuous quest to improve the organisation’s processes by creating a culture and operating principles which eliminate all non value adding activities within organisation‘s processes. Manufacturing firms consider the adoption of the Lean tools as basic requirements for achieving World Class operational excellence or Best Practice. For some time, lean has been used by the manufacturing organizations. Most organizations understand that lean will help them survive global competition and stay in business. According to Hanna (2007:1), service industries, in general, are a long way behind manufacturing in terms of operations and improvements, and not all lean manufacturing ideas translate from the factory floor to office cubicle. The objective of this study is to investigate how lean manufacturing tools can be used to improve efficiency, customer service and enhance the embedding of a continuous improvement culture in the South African Revenue Services East London office Taxpayer Service business area. The activities that took place in the Taxpayer Service business area from 21 July 2008 until 31 October 2008 were observed. During the observation period, taxpayer services staff members were engaged formally, using surveys to assess their underlying mindset and behaviour as well as informally, using unstructured interviews to solicit more information on activities taking place and the reasoning behind certain actions. The movements of taxpayers who visited the branch office were monitored and the time it took for taxpayers to be assisted was measured as well as the time it took taxpayers to be assisted by a service agent or service consultant. To see if the available resources were used efficiently, the numbers of service channels available were compared to the number of service channels occupied. The results of the survey and observations are analysed and interpreted.
- Full Text:
- Date Issued: 2008
- Authors: Vazi, Malibongwe Matthews
- Date: 2008
- Subjects: Organizational effectiveness -- South Africa , Production management -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8726 , http://hdl.handle.net/10948/883 , Organizational effectiveness -- South Africa , Production management -- South Africa
- Description: Lean philosophy is based on the continuous quest to improve the organisation’s processes by creating a culture and operating principles which eliminate all non value adding activities within organisation‘s processes. Manufacturing firms consider the adoption of the Lean tools as basic requirements for achieving World Class operational excellence or Best Practice. For some time, lean has been used by the manufacturing organizations. Most organizations understand that lean will help them survive global competition and stay in business. According to Hanna (2007:1), service industries, in general, are a long way behind manufacturing in terms of operations and improvements, and not all lean manufacturing ideas translate from the factory floor to office cubicle. The objective of this study is to investigate how lean manufacturing tools can be used to improve efficiency, customer service and enhance the embedding of a continuous improvement culture in the South African Revenue Services East London office Taxpayer Service business area. The activities that took place in the Taxpayer Service business area from 21 July 2008 until 31 October 2008 were observed. During the observation period, taxpayer services staff members were engaged formally, using surveys to assess their underlying mindset and behaviour as well as informally, using unstructured interviews to solicit more information on activities taking place and the reasoning behind certain actions. The movements of taxpayers who visited the branch office were monitored and the time it took for taxpayers to be assisted was measured as well as the time it took taxpayers to be assisted by a service agent or service consultant. To see if the available resources were used efficiently, the numbers of service channels available were compared to the number of service channels occupied. The results of the survey and observations are analysed and interpreted.
- Full Text:
- Date Issued: 2008
An investigation of training and mentoring of emerging contractors in the Eastern Cape
- Authors: Moss, Ian
- Date: 2008
- Subjects: Construction industry -- South Africa , Mentoring
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9680 , http://hdl.handle.net/10948/1630 , Construction industry -- South Africa , Mentoring
- Description: The first democratically elected government in South Africa came into power in 1994 and with this the whole country faced changes and new challenges. The construction industry faced the challenge of incorporating and empowering previously disadvantaged people that were part of the industry as well as new emerging contractors that entered the industry. Various training and mentoring programmes were initiated by government as well as quasi-government institutions which attempted to address these challenges. Having an effective mentoring programme in place in the construction industry is critical to the development and growth of the emerging contractors as well as the industry as a whole. This research focuses on a specific programme to establish if the need for training and mentoring programmes exist and which specific aspects of the training need the most attention. The study furthermore, investigates the effect the programme had on emerging contractors on the specific programme. Primary data was collected by means of a telephonic questionnaire to emerging contractors on the mentoring programme as well as the mentors and service providers of the programme. Secondary data was obtained from the literature reviewed and from relevant publications. The main findings were that a need for the training and mentoring of emerging contractors exists and the study emphasizes that there is a demand for the ongoing monitoring of emerging contractors after completion of the programme. The study furthermore reveals that all aspects of the training and mentoring programme is important but more time and effort should be spent on the management and financial aspects of the programme The research is limited to emerging contractors and mentors who participated in the East Cape Development Corporation (ECDC) mentoring programme in the Eastern Cape and is limited to two specific regions namely Port Elizabeth and East London. The findings from the study could be used by training providers as well as mentors to enhance the existing programme to ensure proper rounding of the emerging contractors.
- Full Text:
- Date Issued: 2008
- Authors: Moss, Ian
- Date: 2008
- Subjects: Construction industry -- South Africa , Mentoring
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9680 , http://hdl.handle.net/10948/1630 , Construction industry -- South Africa , Mentoring
- Description: The first democratically elected government in South Africa came into power in 1994 and with this the whole country faced changes and new challenges. The construction industry faced the challenge of incorporating and empowering previously disadvantaged people that were part of the industry as well as new emerging contractors that entered the industry. Various training and mentoring programmes were initiated by government as well as quasi-government institutions which attempted to address these challenges. Having an effective mentoring programme in place in the construction industry is critical to the development and growth of the emerging contractors as well as the industry as a whole. This research focuses on a specific programme to establish if the need for training and mentoring programmes exist and which specific aspects of the training need the most attention. The study furthermore, investigates the effect the programme had on emerging contractors on the specific programme. Primary data was collected by means of a telephonic questionnaire to emerging contractors on the mentoring programme as well as the mentors and service providers of the programme. Secondary data was obtained from the literature reviewed and from relevant publications. The main findings were that a need for the training and mentoring of emerging contractors exists and the study emphasizes that there is a demand for the ongoing monitoring of emerging contractors after completion of the programme. The study furthermore reveals that all aspects of the training and mentoring programme is important but more time and effort should be spent on the management and financial aspects of the programme The research is limited to emerging contractors and mentors who participated in the East Cape Development Corporation (ECDC) mentoring programme in the Eastern Cape and is limited to two specific regions namely Port Elizabeth and East London. The findings from the study could be used by training providers as well as mentors to enhance the existing programme to ensure proper rounding of the emerging contractors.
- Full Text:
- Date Issued: 2008