Characterization of polarization effects on deployed aerial optical fibre in South Africa
- Authors: Mudau, Azwitamisi Eric
- Date: 2008
- Subjects: Polarization (Light) , Fiber optics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10521 , http://hdl.handle.net/10948/1060 , Polarization (Light) , Fiber optics
- Description: In this study, two polarization effects, namely the state of polarization (SOP) and polarization mode dispersion (PMD) in optical fibre cable are investigated. The change in polarization effects introduces errors in optical fibre communication system. We find that the SOP drifts slowly in buried cables, and rapidly in aerial cables. This is because buried cables are located in a static environment, whereas aerial cables are exposed directly to a dynamic environment. The SOP change in aerial cable shows significant correlation with its environment (the global radiation, temperature and wind). The autocorrelation function (ACF) was not performed in buried cable, since they do not satisfy the ACF assumption, whereas in aerial cable it is found that the ACF of the SOP decorrelates quite quickly during the day. The 50 percent decorrelation time during the day and night are 9.6 and 30.4 minutes, respectively. During the day the properties of the optical fibre change rapidly as a result of the rapidly changing environmental conditions, whereas at night the environmental conditions change relatively slowly. Fast Fourier Transform (FFT) of the SOP fluctuations show discrete peaks, which corresponds to the wind induced vibrational frequency of the cable. The PMD fluctuations for undeployed and deployed aerial optical fibre cable are monitored using the generalized interferometric technique (GINTY). It is found that the PMD measured with polarization scrambling is more scattered but more reliable than the PMD measured without polarization scrambling. This is because the PMD obtained with polarization scrambling is averaged over different input and output (I/O) SOP pairs. For deployed aerial cable, it is found that the PMD measured without polarization scrambling fluctuates rapidly during high wind speed conditions. Furthermore, there is a correlation between the measured PMD and the change in temperature. It is found that the change in temperature has a stronger influence than the wind on the PMD of the optical fibre link.
- Full Text:
- Date Issued: 2008
- Authors: Mudau, Azwitamisi Eric
- Date: 2008
- Subjects: Polarization (Light) , Fiber optics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10521 , http://hdl.handle.net/10948/1060 , Polarization (Light) , Fiber optics
- Description: In this study, two polarization effects, namely the state of polarization (SOP) and polarization mode dispersion (PMD) in optical fibre cable are investigated. The change in polarization effects introduces errors in optical fibre communication system. We find that the SOP drifts slowly in buried cables, and rapidly in aerial cables. This is because buried cables are located in a static environment, whereas aerial cables are exposed directly to a dynamic environment. The SOP change in aerial cable shows significant correlation with its environment (the global radiation, temperature and wind). The autocorrelation function (ACF) was not performed in buried cable, since they do not satisfy the ACF assumption, whereas in aerial cable it is found that the ACF of the SOP decorrelates quite quickly during the day. The 50 percent decorrelation time during the day and night are 9.6 and 30.4 minutes, respectively. During the day the properties of the optical fibre change rapidly as a result of the rapidly changing environmental conditions, whereas at night the environmental conditions change relatively slowly. Fast Fourier Transform (FFT) of the SOP fluctuations show discrete peaks, which corresponds to the wind induced vibrational frequency of the cable. The PMD fluctuations for undeployed and deployed aerial optical fibre cable are monitored using the generalized interferometric technique (GINTY). It is found that the PMD measured with polarization scrambling is more scattered but more reliable than the PMD measured without polarization scrambling. This is because the PMD obtained with polarization scrambling is averaged over different input and output (I/O) SOP pairs. For deployed aerial cable, it is found that the PMD measured without polarization scrambling fluctuates rapidly during high wind speed conditions. Furthermore, there is a correlation between the measured PMD and the change in temperature. It is found that the change in temperature has a stronger influence than the wind on the PMD of the optical fibre link.
- Full Text:
- Date Issued: 2008
Cluster centre principals' perceptions of the implementation of the school cluster system in Namibia
- Authors: Aipinge, Lydia P
- Date: 2008
- Subjects: School management and organization -- Namibia Education -- Namibia School principals -- Namibia Educational leadership -- Namibia Educational change -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1449 , http://hdl.handle.net/10962/d1003330
- Description: The School Clustering System (SCS) was introduced five years after Namibia’s independence in 1990. The rationale for its implementation was to improve the quality of education in Namibian schools by enabling the sharing of resources, experience and expertise among clusters and facilitating school administration by pooling resources from several schools to be shared equally. It was piloted in Rundu and then gradually expanded to the whole country. The cluster system groups 5-7 schools that are eographically close and accessible to each other in one cluster under the leadership of one of the principals known as a Cluster Centre Principal (CCP). The purpose of this study was to investigate the perceptions of CCPs of the implementation of the SCS in two clusters of a particular circuit in the Omusati region. It is a case study involving two CCPs, one serving Inspector of Education (IE), a former Inspector of Education, several teachers, principals and parents. Data were collected through interviews, document analysis, and focus group discussions. The study found that the practice of cluster leaders is informed by contemporary leadership and management thinking. The participatory approach employed in clusterbased committees enables site-based management and collaboration. This has led to organisational learning. It was also found that a number of challenges are hampering the implementation of the SCS. These include lack of system support and inadequate resources. However, the human potential coupled with a high degree of readiness exhibited by cluster members are seen as potential drivers of further development of the system. The study recommends the adoption of a national policy that formalises the SCS as well as the strengthening of system support to build cluster capacity. It also makes suggestions for further research in organisational culture and behaviour with the aim of developing leadership and management practices in the SCS.
- Full Text:
- Date Issued: 2008
Cluster centre principals' perceptions of the implementation of the school cluster system in Namibia
- Authors: Aipinge, Lydia P
- Date: 2008
- Subjects: School management and organization -- Namibia Education -- Namibia School principals -- Namibia Educational leadership -- Namibia Educational change -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1449 , http://hdl.handle.net/10962/d1003330
- Description: The School Clustering System (SCS) was introduced five years after Namibia’s independence in 1990. The rationale for its implementation was to improve the quality of education in Namibian schools by enabling the sharing of resources, experience and expertise among clusters and facilitating school administration by pooling resources from several schools to be shared equally. It was piloted in Rundu and then gradually expanded to the whole country. The cluster system groups 5-7 schools that are eographically close and accessible to each other in one cluster under the leadership of one of the principals known as a Cluster Centre Principal (CCP). The purpose of this study was to investigate the perceptions of CCPs of the implementation of the SCS in two clusters of a particular circuit in the Omusati region. It is a case study involving two CCPs, one serving Inspector of Education (IE), a former Inspector of Education, several teachers, principals and parents. Data were collected through interviews, document analysis, and focus group discussions. The study found that the practice of cluster leaders is informed by contemporary leadership and management thinking. The participatory approach employed in clusterbased committees enables site-based management and collaboration. This has led to organisational learning. It was also found that a number of challenges are hampering the implementation of the SCS. These include lack of system support and inadequate resources. However, the human potential coupled with a high degree of readiness exhibited by cluster members are seen as potential drivers of further development of the system. The study recommends the adoption of a national policy that formalises the SCS as well as the strengthening of system support to build cluster capacity. It also makes suggestions for further research in organisational culture and behaviour with the aim of developing leadership and management practices in the SCS.
- Full Text:
- Date Issued: 2008
Commodity fetishism and domination: the contributions of Marx, Lukács, Horkheimer, Adorno and Bourdieu
- Authors: Lloyd, Gareth
- Date: 2008
- Subjects: Marx, Karl, 1818-1883 Lukács, György, 1885-1971 Horkheimer, Max, 1895-1973 Adorno, Theodor W., 1903-1969 Bourdieu, Pierre, 1930-2002 Commodity fetishism Capitalism Consumption (Economics) Marxian economics
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2795 , http://hdl.handle.net/10962/d1003005
- Description: This thesis seeks to trace domination theory back to the influential work done by Marx on commodity fetishism. Marx's work proves to be an original account of domination that explains how the dominated many accept the rule of the privileged few. The theory of commodity fetishism develops the idea that individuals come to adopt beliefs that bolster and reproduce the status quo of capitalism. For Marx, the way that individuals experience capitalism is different from the way that it actually works because, in fact, lived experience is actually false. Oppression, inequality and exploitation are thus hidden and the main source of conflict between the oppressed many and the privileged few is obscured. I seek to develop this insight of Marx's into a more comprehensive account of how dominating capitalism self maintains. Lukács' theory of reification explains how capitalism has become all-embracing because capitalism has developed its own type of rationality. This specific rationality shapes thought, which in turn, generates false beliefs that favour the continuation of the status quo. Horkheimer and Adorno argue that capitalism extends its influence by means of its deep involvement in modern culture. Today, culture has become an massive industry which inculcates the logic and principles of capitalism into individuals. For these theorists, capitalism has penetrated all areas of life; experience, knowledge and thought have become extensions of capitalism itself. Marx, Lukács, Horkheimer and Adorno give accounts of how false beliefs are put into practice. Hence the importance of the work of Bourdieu. Bourdieu's theory of distinction describes how the status quo in capitalism is maintained by the behaviour of individuals through their daily acts of consumption. I argue that the consumption of commodities reproduces the status quo in two ways: firstly, establishing an upper-class which takes the lead in patterns of consumption, and, secondly, by creating a middle class that follows its example. Finally, I relate Bourdieu's insights to the theories of Marx, Lukács, Horkheimer and Adorno and Bourdieu in order to arrive at a more inclusive account of how.
- Full Text:
- Date Issued: 2008
- Authors: Lloyd, Gareth
- Date: 2008
- Subjects: Marx, Karl, 1818-1883 Lukács, György, 1885-1971 Horkheimer, Max, 1895-1973 Adorno, Theodor W., 1903-1969 Bourdieu, Pierre, 1930-2002 Commodity fetishism Capitalism Consumption (Economics) Marxian economics
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2795 , http://hdl.handle.net/10962/d1003005
- Description: This thesis seeks to trace domination theory back to the influential work done by Marx on commodity fetishism. Marx's work proves to be an original account of domination that explains how the dominated many accept the rule of the privileged few. The theory of commodity fetishism develops the idea that individuals come to adopt beliefs that bolster and reproduce the status quo of capitalism. For Marx, the way that individuals experience capitalism is different from the way that it actually works because, in fact, lived experience is actually false. Oppression, inequality and exploitation are thus hidden and the main source of conflict between the oppressed many and the privileged few is obscured. I seek to develop this insight of Marx's into a more comprehensive account of how dominating capitalism self maintains. Lukács' theory of reification explains how capitalism has become all-embracing because capitalism has developed its own type of rationality. This specific rationality shapes thought, which in turn, generates false beliefs that favour the continuation of the status quo. Horkheimer and Adorno argue that capitalism extends its influence by means of its deep involvement in modern culture. Today, culture has become an massive industry which inculcates the logic and principles of capitalism into individuals. For these theorists, capitalism has penetrated all areas of life; experience, knowledge and thought have become extensions of capitalism itself. Marx, Lukács, Horkheimer and Adorno give accounts of how false beliefs are put into practice. Hence the importance of the work of Bourdieu. Bourdieu's theory of distinction describes how the status quo in capitalism is maintained by the behaviour of individuals through their daily acts of consumption. I argue that the consumption of commodities reproduces the status quo in two ways: firstly, establishing an upper-class which takes the lead in patterns of consumption, and, secondly, by creating a middle class that follows its example. Finally, I relate Bourdieu's insights to the theories of Marx, Lukács, Horkheimer and Adorno and Bourdieu in order to arrive at a more inclusive account of how.
- Full Text:
- Date Issued: 2008
Community participation and project sustainability in rural Zimbabwe: the case of Sangwe communal lands
- Authors: Dzinavatonga, Naison
- Date: 2008
- Subjects: Rural development -- Zimbabwe -- Case studies , Local government -- Zimbabwe -- Case studies , Municipal services -- Zimbabwe -- Case studies , Community development -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11408 , http://hdl.handle.net/10353/130 , Rural development -- Zimbabwe -- Case studies , Local government -- Zimbabwe -- Case studies , Municipal services -- Zimbabwe -- Case studies , Community development -- Zimbabwe
- Description: Development thinkers and practitioners have been pondering over community participation for the last decades. Some even called the 1980s a decade of participation in development discourse while others also view the current decade of social movements, Non-Governmental Organizations, and Community-Based Organizations as a manifestation of organized community participation. The Sangwe Communal Lands is one such area that researchers in the last decades have been pondering over the role of community participation in project sustainability. Likewise this study evaluates the effectiveness of community participation in Sangwe where it has been hypothesized that the current participation discourse has not lived up to its billing of ensuring sustainable projects. The research therefore explores some of the politics surrounding community participation in Sangwe and Zimbabwe at large. From one angle to the other, the research overviews some of the different theoretical orientations, goals, processes and practices that are commonly used but not always recognized to constitute genuine community participation. The research is intended to clarify some of the differences that emerge when projects are designed, and to stimulate discussion about community participation more generally. This study shows that the local communities who in this case are the reason for being of NGOs and their programmes are quite critical in development projects undertaken in their own areas. This to a larger extent determines the success of development initiatives at all levels. Such a scenario calls for a proper sustainable and pro-rural community legal and policy framework as a pre-requisite for sustainable projects. The study further highlights the need for development workers and agents to change their attitude towards communities and their indigenous knowledge systems. They need to co-opt community indigenous knowledge as a system that has a unique contribution to sustainable development. Above all, attitude change is the pillar for the New World System and 21st century development paradigm that respects local values, concerns, culture, and aspirations and that these should be taken on board in the management of development programmes.
- Full Text:
- Date Issued: 2008
- Authors: Dzinavatonga, Naison
- Date: 2008
- Subjects: Rural development -- Zimbabwe -- Case studies , Local government -- Zimbabwe -- Case studies , Municipal services -- Zimbabwe -- Case studies , Community development -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11408 , http://hdl.handle.net/10353/130 , Rural development -- Zimbabwe -- Case studies , Local government -- Zimbabwe -- Case studies , Municipal services -- Zimbabwe -- Case studies , Community development -- Zimbabwe
- Description: Development thinkers and practitioners have been pondering over community participation for the last decades. Some even called the 1980s a decade of participation in development discourse while others also view the current decade of social movements, Non-Governmental Organizations, and Community-Based Organizations as a manifestation of organized community participation. The Sangwe Communal Lands is one such area that researchers in the last decades have been pondering over the role of community participation in project sustainability. Likewise this study evaluates the effectiveness of community participation in Sangwe where it has been hypothesized that the current participation discourse has not lived up to its billing of ensuring sustainable projects. The research therefore explores some of the politics surrounding community participation in Sangwe and Zimbabwe at large. From one angle to the other, the research overviews some of the different theoretical orientations, goals, processes and practices that are commonly used but not always recognized to constitute genuine community participation. The research is intended to clarify some of the differences that emerge when projects are designed, and to stimulate discussion about community participation more generally. This study shows that the local communities who in this case are the reason for being of NGOs and their programmes are quite critical in development projects undertaken in their own areas. This to a larger extent determines the success of development initiatives at all levels. Such a scenario calls for a proper sustainable and pro-rural community legal and policy framework as a pre-requisite for sustainable projects. The study further highlights the need for development workers and agents to change their attitude towards communities and their indigenous knowledge systems. They need to co-opt community indigenous knowledge as a system that has a unique contribution to sustainable development. Above all, attitude change is the pillar for the New World System and 21st century development paradigm that respects local values, concerns, culture, and aspirations and that these should be taken on board in the management of development programmes.
- Full Text:
- Date Issued: 2008
Community-based ecotourism for conservation and development in Lesotho: a case of Ha-Kome
- Authors: Maanela, Thabelo Maanela
- Date: 2008
- Subjects: Community development -- Lesotho , Natural resources conservation areas -- Lesotho , Ecotourism -- Lesotho
- Language: English
- Type: Thesis , Masters , MPhil (Environmental Studies)
- Identifier: vital:11874 , http://hdl.handle.net/10353/138 , Community development -- Lesotho , Natural resources conservation areas -- Lesotho , Ecotourism -- Lesotho
- Description: This study evaluates the potential for community-based ecotourism as conservation and development strategy in Kome village, which is an unprotected area. The study adopts the ecotourism concept to illustrate how communitybased ecotourism can be a tool for conservation and development in poor rural communities. Adopting the intensive case study design, the study investigates the major challenges for community-based ecotourism in Kome village. Findings reveal that Kome community derives low socio-economic benefits including limited earnings, low employment, poor benefits sharing and lack of entrepreneurships. Kome has a potential to offer better community-based ecotourism products due to diverse tourist attractions ranging from historical, cultural activities to natural scenery. The study suggests and recommends formation of a partnership between the Kome community, private, public sector and the NGOs as a strategy for development. The study concludes that ecotourism can be an appropriate option for conservation and development for Kome village.
- Full Text:
- Date Issued: 2008
- Authors: Maanela, Thabelo Maanela
- Date: 2008
- Subjects: Community development -- Lesotho , Natural resources conservation areas -- Lesotho , Ecotourism -- Lesotho
- Language: English
- Type: Thesis , Masters , MPhil (Environmental Studies)
- Identifier: vital:11874 , http://hdl.handle.net/10353/138 , Community development -- Lesotho , Natural resources conservation areas -- Lesotho , Ecotourism -- Lesotho
- Description: This study evaluates the potential for community-based ecotourism as conservation and development strategy in Kome village, which is an unprotected area. The study adopts the ecotourism concept to illustrate how communitybased ecotourism can be a tool for conservation and development in poor rural communities. Adopting the intensive case study design, the study investigates the major challenges for community-based ecotourism in Kome village. Findings reveal that Kome community derives low socio-economic benefits including limited earnings, low employment, poor benefits sharing and lack of entrepreneurships. Kome has a potential to offer better community-based ecotourism products due to diverse tourist attractions ranging from historical, cultural activities to natural scenery. The study suggests and recommends formation of a partnership between the Kome community, private, public sector and the NGOs as a strategy for development. The study concludes that ecotourism can be an appropriate option for conservation and development for Kome village.
- Full Text:
- Date Issued: 2008
Compensating employees who suffer work-related psychiatric harm in the course and scope of their employment
- Authors: Du Plessis, Meryl Candice
- Date: 2008
- Subjects: Workers' compensation -- Law and legislation , Liability for emotional distress , Post-traumatic stress disorder , Occupational diseases
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3671 , http://hdl.handle.net/10962/d1003186 , Workers' compensation -- Law and legislation , Liability for emotional distress , Post-traumatic stress disorder , Occupational diseases
- Description: This study aims to ascertain the legal redress available to employees who suffer psychological harm as a result of workplace stress. On a general level, it identifies and assesses some of the available policy options, particularly as they relate to the interaction of statutory workers’ compensation schemes and the common law. On a more specific level, it examines and analyses various issues: the nature and extent of compensable psychiatric harm; the legal duty on employers to protect employees’ health and well being; the role of negligence; requirements specific to the Compensation for Occupational Injuries and Diseases Act 130 of 1993 (COIDA); and the causal nexus necessary to sustain a claim. The conclusion is reached that employees should utilise the workers’ compensation system as the primary vehicle to obtain redress if they suffer from occupational psychiatric harm. However, due to the law’s generally conservative approach to psychiatric harm and intimations that the Department of Labour intends setting strict requirements for claims for psychiatric harm in terms of COIDA, the common law of delict might continue to play an important role in claims for occupational psychiatric harm. The writer recommends that a hybrid system for compensation for stress-related psychiatric harm suffered in the course and scope of employment be adopted, with the statutory compensation scheme providing relatively limited benefits and the common law providing general damages if the claimant can prove negligence on the part of the employer; that the requirement of a recognised psychiatric illness be maintained for both statutory compensation and compensation in terms of the common law; that all parties’ interests are carefully balanced in delineating the employer’s legal duty to employers and that undue weight not be accorded to the terms of the contract of employment; that more attention be paid to factual causation and the development of lternatives/complements to the traditional conditio sine qua non test; that the validity of the circular instruction on post-traumatic stress disorder (PTSD) be tested on administrative-law grounds; and that the stringent prescription requirements set by the circular instruction on PTSD be reviewed.
- Full Text:
- Date Issued: 2008
- Authors: Du Plessis, Meryl Candice
- Date: 2008
- Subjects: Workers' compensation -- Law and legislation , Liability for emotional distress , Post-traumatic stress disorder , Occupational diseases
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3671 , http://hdl.handle.net/10962/d1003186 , Workers' compensation -- Law and legislation , Liability for emotional distress , Post-traumatic stress disorder , Occupational diseases
- Description: This study aims to ascertain the legal redress available to employees who suffer psychological harm as a result of workplace stress. On a general level, it identifies and assesses some of the available policy options, particularly as they relate to the interaction of statutory workers’ compensation schemes and the common law. On a more specific level, it examines and analyses various issues: the nature and extent of compensable psychiatric harm; the legal duty on employers to protect employees’ health and well being; the role of negligence; requirements specific to the Compensation for Occupational Injuries and Diseases Act 130 of 1993 (COIDA); and the causal nexus necessary to sustain a claim. The conclusion is reached that employees should utilise the workers’ compensation system as the primary vehicle to obtain redress if they suffer from occupational psychiatric harm. However, due to the law’s generally conservative approach to psychiatric harm and intimations that the Department of Labour intends setting strict requirements for claims for psychiatric harm in terms of COIDA, the common law of delict might continue to play an important role in claims for occupational psychiatric harm. The writer recommends that a hybrid system for compensation for stress-related psychiatric harm suffered in the course and scope of employment be adopted, with the statutory compensation scheme providing relatively limited benefits and the common law providing general damages if the claimant can prove negligence on the part of the employer; that the requirement of a recognised psychiatric illness be maintained for both statutory compensation and compensation in terms of the common law; that all parties’ interests are carefully balanced in delineating the employer’s legal duty to employers and that undue weight not be accorded to the terms of the contract of employment; that more attention be paid to factual causation and the development of lternatives/complements to the traditional conditio sine qua non test; that the validity of the circular instruction on post-traumatic stress disorder (PTSD) be tested on administrative-law grounds; and that the stringent prescription requirements set by the circular instruction on PTSD be reviewed.
- Full Text:
- Date Issued: 2008
Composition and phenology of insect pests of Capsicum (Solanaceae) cultivated in the Makana District, Eastern Cape Province, South Africa
- Authors: Hepburn, Colleen
- Date: 2008
- Subjects: Insects -- South Africa -- Eastern Cape -- Composition Insects -- South Africa -- Eastern Cape -- Phenology Agricultural pests -- South Africa -- Eastern Cape Peppers -- Diseases and pests -- South Africa -- Eastern Cape Solanaceae -- Diseases and pests -- South Africa -- Eastern Cape Insect pests -- South Africa -- Eastern Cape Insect pests -- Biological control -- South Africa -- Eastern Cape Insect pests -- Control -- Methods -- South Africa -- Eastern Cape Insects -- Host plants -- South Africa -- Eastern Cape Insect-plant relationships -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5656 , http://hdl.handle.net/10962/d1005339
- Description: Capsicum baccatum var. pendulum was first grown in the Makana District in 2005. Extremely little was known about best practices for cultivation or the insects and diseases associated with the crop in this area. The study was conducted during the second year of production, November 2005 and November 2006, in an attempt to identify the composition and phenology of insects occurring on C. baccatum. In the more rural parts of the Eastern Cape, and more particularly in Grahamstown, there are very few industries. With the advent of this new agricultural venture, a processing factory has been opened in Grahamstown creating more than 600 seasonal jobs in the factory and 1000 seasonal jobs on farms for local people. This business enterprise has not only brought about the creation of jobs, but also training and skills development and empowerment, generating much-needed income in this area. An extensive literature review yielded limited information on insect pests associated with Capsicum. Data from a pilot sampling trial undertaken were statistically analyzed to establish the number of plants to be scouted per site and the most effective scouting techniques to use. Based on the data available and insects collected during the pilot sampling trial, a surveillance programme was designed. Five different types of monitoring traps were placed in each of the eight study sites. Collection of trap catches and scouting of fifteen individual plants per site was undertaken on a weekly basis over the 52-week study period. The most commonly occurring potential insect pests were African Bollworm Helicoverpa armigera (Hübner), False Codling Moth Thaumatotibia leucotreta (= Cryptophlebia leucotreta) (Meyrick), Mediterranean Fruit Fly Ceratitis capitata (Wiedemann) and several species of thrips. Population densities of these pests and their phenology on Capsicum were determined. Statistical analyses established the efficacy of the monitoring traps for each pest, tested for differences among and between study sites, calculated an estimate of the number of pods damaged and a measure of plant damage.The results show that the majority of damage caused to the Capsicum baccatum cropping system was due to Mediterranean Fruit Fly populations. It was established that, although African Bollworm and False Codling Moth were present during the study period, their numbers were negligible and only nominal damage was caused by these pests. Damage caused by thrips species was apparent but not quantifiable. Intervention strategies using an Integrated Pest Management approach, are discussed.
- Full Text:
- Date Issued: 2008
- Authors: Hepburn, Colleen
- Date: 2008
- Subjects: Insects -- South Africa -- Eastern Cape -- Composition Insects -- South Africa -- Eastern Cape -- Phenology Agricultural pests -- South Africa -- Eastern Cape Peppers -- Diseases and pests -- South Africa -- Eastern Cape Solanaceae -- Diseases and pests -- South Africa -- Eastern Cape Insect pests -- South Africa -- Eastern Cape Insect pests -- Biological control -- South Africa -- Eastern Cape Insect pests -- Control -- Methods -- South Africa -- Eastern Cape Insects -- Host plants -- South Africa -- Eastern Cape Insect-plant relationships -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5656 , http://hdl.handle.net/10962/d1005339
- Description: Capsicum baccatum var. pendulum was first grown in the Makana District in 2005. Extremely little was known about best practices for cultivation or the insects and diseases associated with the crop in this area. The study was conducted during the second year of production, November 2005 and November 2006, in an attempt to identify the composition and phenology of insects occurring on C. baccatum. In the more rural parts of the Eastern Cape, and more particularly in Grahamstown, there are very few industries. With the advent of this new agricultural venture, a processing factory has been opened in Grahamstown creating more than 600 seasonal jobs in the factory and 1000 seasonal jobs on farms for local people. This business enterprise has not only brought about the creation of jobs, but also training and skills development and empowerment, generating much-needed income in this area. An extensive literature review yielded limited information on insect pests associated with Capsicum. Data from a pilot sampling trial undertaken were statistically analyzed to establish the number of plants to be scouted per site and the most effective scouting techniques to use. Based on the data available and insects collected during the pilot sampling trial, a surveillance programme was designed. Five different types of monitoring traps were placed in each of the eight study sites. Collection of trap catches and scouting of fifteen individual plants per site was undertaken on a weekly basis over the 52-week study period. The most commonly occurring potential insect pests were African Bollworm Helicoverpa armigera (Hübner), False Codling Moth Thaumatotibia leucotreta (= Cryptophlebia leucotreta) (Meyrick), Mediterranean Fruit Fly Ceratitis capitata (Wiedemann) and several species of thrips. Population densities of these pests and their phenology on Capsicum were determined. Statistical analyses established the efficacy of the monitoring traps for each pest, tested for differences among and between study sites, calculated an estimate of the number of pods damaged and a measure of plant damage.The results show that the majority of damage caused to the Capsicum baccatum cropping system was due to Mediterranean Fruit Fly populations. It was established that, although African Bollworm and False Codling Moth were present during the study period, their numbers were negligible and only nominal damage was caused by these pests. Damage caused by thrips species was apparent but not quantifiable. Intervention strategies using an Integrated Pest Management approach, are discussed.
- Full Text:
- Date Issued: 2008
Conceptualisations of 'the community' and 'community knowledge' among community radio volunteers in Katutura, Namibia
- Authors: Ellis, Hugh
- Date: 2008
- Subjects: Katutura Community Radio Community radio -- Namibia Radio broadcasting -- Namibia Radio stations -- Namibia Radio journalism -- Namibia Volunteers -- Namibia Radio in community development -- Namibia Mass media -- Social aspects -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3428 , http://hdl.handle.net/10962/d1002882
- Description: Community radio typically relies on volunteers to produce and present stations’ programming. Volunteers are generally drawn from stations’ target communities and are seen as “representatives” of those communities. It is with such volunteers and their role as representatives of stations’ target communities that this study is concerned. It poses the question: “what are the central concepts that typically inform volunteers’ knowledge of their target community, and how do these concepts impact on their perception of how they have gained this knowledge, and how they justify their role as representatives of this community?” The dissertation teases out the implications of these conceptualisations for a volunteer team’s ability to contribute to the establishment of a media environment that operates as a Habermasian ‘critical public sphere’. It argues that this can only be achieved if volunteers have detailed and in-depth knowledge of their target community. In order to acquire this knowledge, volunteers should make use of systematic ways of learning about the community, rather than relying solely on knowledge obtained by living there. In a case study of Katutura Community Radio (KCR), one of the bestknown community radio stations in Namibia, the study identifies key differences in the way in which different groups of volunteers conceptualise “the community”. The study focuses, in particular, on such difference as it applies to those who are volunteers in their personal capacity and those who represent non-governmental and community-based organisations at the station. It is argued that two strategies would lead to significant improvement in such a station’s ability to serve as a public sphere. Firstly, the station would benefit from an approach in which different sections of the volunteer team share knowledge of the target community with each other. Secondly, volunteers should undertake further systematic research into their target community. It is also argued that in order to facilitate such processes, radio stations such as KCR should recognise the inevitability of differences between different versions of “community knowledge”.
- Full Text:
- Date Issued: 2008
- Authors: Ellis, Hugh
- Date: 2008
- Subjects: Katutura Community Radio Community radio -- Namibia Radio broadcasting -- Namibia Radio stations -- Namibia Radio journalism -- Namibia Volunteers -- Namibia Radio in community development -- Namibia Mass media -- Social aspects -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3428 , http://hdl.handle.net/10962/d1002882
- Description: Community radio typically relies on volunteers to produce and present stations’ programming. Volunteers are generally drawn from stations’ target communities and are seen as “representatives” of those communities. It is with such volunteers and their role as representatives of stations’ target communities that this study is concerned. It poses the question: “what are the central concepts that typically inform volunteers’ knowledge of their target community, and how do these concepts impact on their perception of how they have gained this knowledge, and how they justify their role as representatives of this community?” The dissertation teases out the implications of these conceptualisations for a volunteer team’s ability to contribute to the establishment of a media environment that operates as a Habermasian ‘critical public sphere’. It argues that this can only be achieved if volunteers have detailed and in-depth knowledge of their target community. In order to acquire this knowledge, volunteers should make use of systematic ways of learning about the community, rather than relying solely on knowledge obtained by living there. In a case study of Katutura Community Radio (KCR), one of the bestknown community radio stations in Namibia, the study identifies key differences in the way in which different groups of volunteers conceptualise “the community”. The study focuses, in particular, on such difference as it applies to those who are volunteers in their personal capacity and those who represent non-governmental and community-based organisations at the station. It is argued that two strategies would lead to significant improvement in such a station’s ability to serve as a public sphere. Firstly, the station would benefit from an approach in which different sections of the volunteer team share knowledge of the target community with each other. Secondly, volunteers should undertake further systematic research into their target community. It is also argued that in order to facilitate such processes, radio stations such as KCR should recognise the inevitability of differences between different versions of “community knowledge”.
- Full Text:
- Date Issued: 2008
Confiscation orders in terms of the prevention of Organised Crime Act
- Authors: Juicy, Gavin Winston Bill
- Date: 2008
- Subjects: Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10169 , http://hdl.handle.net/10948/750 , Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Description: The Prevention of Organised Crime Act brought major changes to the South African criminal law context. Through the Act, major confiscatory provisions were established. The Act does not only target convicted criminals, but also any person who is in possession of tainted property that was used in the commission of offences. Civil forfeiture is the most widely used procedure in forfeiture proceedings. In the dissertation the effectiveness of criminal and civil confiscation is outlined. The historical development of confiscation and forfeiture provisions in South African is discussed with reference to the common law, legislation and international instruments and how international developments have influenced local development. This treatise consist of an overview of the confiscation provisions in the Prevention of Organised Act 121 of 1998 as one of the measures the South African legislature put in place to deal with organised crime. Since the Prevention of Organised Crime Act was passed, the courts have given meaning to what is an instrumentality of an offence and the proceeds of unlawful activities as a measure to counter organised crime. This treatise refers to those cases given the definition of an instrumentality of an offence and the proceeds of unlawful activities. For the purpose of effectively dealing with organised crime, this treatise contains a discussion on the effectiveness of criminal and civil confiscation procedure. The justification for asset forfeiture is outlined.
- Full Text:
- Date Issued: 2008
- Authors: Juicy, Gavin Winston Bill
- Date: 2008
- Subjects: Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10169 , http://hdl.handle.net/10948/750 , Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Description: The Prevention of Organised Crime Act brought major changes to the South African criminal law context. Through the Act, major confiscatory provisions were established. The Act does not only target convicted criminals, but also any person who is in possession of tainted property that was used in the commission of offences. Civil forfeiture is the most widely used procedure in forfeiture proceedings. In the dissertation the effectiveness of criminal and civil confiscation is outlined. The historical development of confiscation and forfeiture provisions in South African is discussed with reference to the common law, legislation and international instruments and how international developments have influenced local development. This treatise consist of an overview of the confiscation provisions in the Prevention of Organised Act 121 of 1998 as one of the measures the South African legislature put in place to deal with organised crime. Since the Prevention of Organised Crime Act was passed, the courts have given meaning to what is an instrumentality of an offence and the proceeds of unlawful activities as a measure to counter organised crime. This treatise refers to those cases given the definition of an instrumentality of an offence and the proceeds of unlawful activities. For the purpose of effectively dealing with organised crime, this treatise contains a discussion on the effectiveness of criminal and civil confiscation procedure. The justification for asset forfeiture is outlined.
- Full Text:
- Date Issued: 2008
Connection management applications for high-speed audio networking
- Authors: Sibanda, Phathisile
- Date: 2008 , 2008-03-12
- Subjects: Flash (Computer file) , Computer networks , Computer networks -- Management , Digital communications , Computer sound processing , Sound -- Recording and reproducing -- Digital techniques , Broadcast data systems , C# (Computer program language) , C++ (Computer program language) , ActionScript (Computer program language)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4634 , http://hdl.handle.net/10962/d1006532 , Flash (Computer file) , Computer networks , Computer networks -- Management , Digital communications , Computer sound processing , Sound -- Recording and reproducing -- Digital techniques , Broadcast data systems , C# (Computer program language) , C++ (Computer program language) , ActionScript (Computer program language)
- Description: Traditionally, connection management applications (referred to as patchbays) for high-speed audio networking, are predominantly developed using third-generation languages such as C, C# and C++. Due to the rapid increase in distributed audio/video network usage in the world today, connection management applications that control signal routing over these networks have also evolved in complexity to accommodate more functionality. As the result, high-speed audio networking application developers require a tool that will enable them to develop complex connection management applications easily and within the shortest possible time. In addition, this tool should provide them with the reliability and flexibility required to develop applications controlling signal routing in networks carrying real-time data. High-speed audio networks are used for various purposes that include audio/video production and broadcasting. This investigation evaluates the possibility of using Adobe Flash Professional 8, using ActionScript 2.0, for developing connection management applications. Three patchbays, namely the Broadcast patchbay, the Project studio patchbay, and the Hospitality/Convention Centre patchbay were developed and tested for connection management in three sound installation networks, namely the Broadcast network, the Project studio network, and the Hospitality/Convention Centre network. Findings indicate that complex connection management applications can effectively be implemented using the Adobe Flash IDE and ActionScript 2.0.
- Full Text:
- Date Issued: 2008
- Authors: Sibanda, Phathisile
- Date: 2008 , 2008-03-12
- Subjects: Flash (Computer file) , Computer networks , Computer networks -- Management , Digital communications , Computer sound processing , Sound -- Recording and reproducing -- Digital techniques , Broadcast data systems , C# (Computer program language) , C++ (Computer program language) , ActionScript (Computer program language)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4634 , http://hdl.handle.net/10962/d1006532 , Flash (Computer file) , Computer networks , Computer networks -- Management , Digital communications , Computer sound processing , Sound -- Recording and reproducing -- Digital techniques , Broadcast data systems , C# (Computer program language) , C++ (Computer program language) , ActionScript (Computer program language)
- Description: Traditionally, connection management applications (referred to as patchbays) for high-speed audio networking, are predominantly developed using third-generation languages such as C, C# and C++. Due to the rapid increase in distributed audio/video network usage in the world today, connection management applications that control signal routing over these networks have also evolved in complexity to accommodate more functionality. As the result, high-speed audio networking application developers require a tool that will enable them to develop complex connection management applications easily and within the shortest possible time. In addition, this tool should provide them with the reliability and flexibility required to develop applications controlling signal routing in networks carrying real-time data. High-speed audio networks are used for various purposes that include audio/video production and broadcasting. This investigation evaluates the possibility of using Adobe Flash Professional 8, using ActionScript 2.0, for developing connection management applications. Three patchbays, namely the Broadcast patchbay, the Project studio patchbay, and the Hospitality/Convention Centre patchbay were developed and tested for connection management in three sound installation networks, namely the Broadcast network, the Project studio network, and the Hospitality/Convention Centre network. Findings indicate that complex connection management applications can effectively be implemented using the Adobe Flash IDE and ActionScript 2.0.
- Full Text:
- Date Issued: 2008
Constructing confidence intervals for polarization mode dispersion
- Authors: Erlank, Warrick
- Date: 2008
- Subjects: Fiber optics , Polarization (Light)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10571 , http://hdl.handle.net/10948/951 , Fiber optics , Polarization (Light)
- Description: Polarization mode dispersion (PMD) causes significant impairment in high bit-rate optical telecommunications systems. Knowledge of a fibre’s PMD mean value, and the relevant confidence interval, is essential for determining a fibre’s maximum allowable bit-rate. Various methods of confidence interval construction for time series data were tested in this dissertation using simulation. These included the autocovariance-matrix methods as suggested by Box and Jenkins, as well as the more practical and simpler batch means methods. Some of these methods were shown to be significantly better than the standard method of calculating confidence intervals for non time series data. The best of the tested methods were used on actual PMD data. The effect of using polarization scramblers was also tested.
- Full Text:
- Date Issued: 2008
- Authors: Erlank, Warrick
- Date: 2008
- Subjects: Fiber optics , Polarization (Light)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10571 , http://hdl.handle.net/10948/951 , Fiber optics , Polarization (Light)
- Description: Polarization mode dispersion (PMD) causes significant impairment in high bit-rate optical telecommunications systems. Knowledge of a fibre’s PMD mean value, and the relevant confidence interval, is essential for determining a fibre’s maximum allowable bit-rate. Various methods of confidence interval construction for time series data were tested in this dissertation using simulation. These included the autocovariance-matrix methods as suggested by Box and Jenkins, as well as the more practical and simpler batch means methods. Some of these methods were shown to be significantly better than the standard method of calculating confidence intervals for non time series data. The best of the tested methods were used on actual PMD data. The effect of using polarization scramblers was also tested.
- Full Text:
- Date Issued: 2008
Constructions of masculinity in young men's narratives of violence in the homeplace
- Authors: Stride, Lorenzo
- Date: 2008
- Subjects: Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11847 , http://hdl.handle.net/10353/185 , Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Description: This research was undertaken with a view to advancing scholarship on the production and reproduction of notions of masculinity through everyday experiences of violence in the domestic sphere. In particular, the researcher sought to explicate constructions of masculinity in men’s narratives of their experiences of violence in the homeplace. The participants in this study constituted a fairly homogenous sample in terms of age, education, geographic location, and socio-economic status. A homogenous sample was purposefully selected because it aided an analysis of the phenomenon under study without diversions from extraneous variables. Data was collected from semi-structured, personal, in-depth, face-to-face interviews with eight young men. In these interviews participants were asked to recall and to talk about one particular experience of domestic violence that they witnessed or that had happened to them in the past. Photo elicitation was used as a reflective technique aimed at facilitating recall and discussion during the interviews. Data was analysed by means of a discourse analysis. The main findings of this research were that the participants grew up in communities where a more traditional hegemonic masculinity was commonplace and where violence as a means of exerting control was associated with being a ‘real man’. The participants did however question this notion of masculinity as a result of their experiences, particularly when they perceived the violence that they had been exposed to as excessive or unwarranted.
- Full Text:
- Date Issued: 2008
- Authors: Stride, Lorenzo
- Date: 2008
- Subjects: Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11847 , http://hdl.handle.net/10353/185 , Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Description: This research was undertaken with a view to advancing scholarship on the production and reproduction of notions of masculinity through everyday experiences of violence in the domestic sphere. In particular, the researcher sought to explicate constructions of masculinity in men’s narratives of their experiences of violence in the homeplace. The participants in this study constituted a fairly homogenous sample in terms of age, education, geographic location, and socio-economic status. A homogenous sample was purposefully selected because it aided an analysis of the phenomenon under study without diversions from extraneous variables. Data was collected from semi-structured, personal, in-depth, face-to-face interviews with eight young men. In these interviews participants were asked to recall and to talk about one particular experience of domestic violence that they witnessed or that had happened to them in the past. Photo elicitation was used as a reflective technique aimed at facilitating recall and discussion during the interviews. Data was analysed by means of a discourse analysis. The main findings of this research were that the participants grew up in communities where a more traditional hegemonic masculinity was commonplace and where violence as a means of exerting control was associated with being a ‘real man’. The participants did however question this notion of masculinity as a result of their experiences, particularly when they perceived the violence that they had been exposed to as excessive or unwarranted.
- Full Text:
- Date Issued: 2008
Contextual obstacles to the delivery of effective psychological treatment of PTSD in a South African community setting
- Authors: Swartz, Kerry
- Date: 2008
- Subjects: Post-traumatic stress disorder -- Treatment -- South Africa Rape victims -- Counseling of -- South Africa Psychic trauma -- Treatment HIV infections -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3068 , http://hdl.handle.net/10962/d1002577
- Description: The present study presents three individual cases; all three clients had endured a traumatic event, namely rape, and all three met the criteria for PTSD. Despite the fact that each of the clients was initially assessed as being a suitable candidate for psychological treatment, none of the cases proceeded to the therapy phase of treatment. A number of obstacles, both personal and contextual, were encountered during treatment implementation, preventing or limiting a successful outcome of psychological treatment in each case. An examination of these cases highlights a few of the many obstacles frequently faced when delivering psychological treatment to the South African context. In so doing, this research provides an opportunity to consider the possible reasons for the limited documentation of treatment efficacy within the South African context, as well as to enhance our understanding of and sensitivity towards the cultural and contextual factors playing a role in psychological treatment.
- Full Text:
- Date Issued: 2008
- Authors: Swartz, Kerry
- Date: 2008
- Subjects: Post-traumatic stress disorder -- Treatment -- South Africa Rape victims -- Counseling of -- South Africa Psychic trauma -- Treatment HIV infections -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3068 , http://hdl.handle.net/10962/d1002577
- Description: The present study presents three individual cases; all three clients had endured a traumatic event, namely rape, and all three met the criteria for PTSD. Despite the fact that each of the clients was initially assessed as being a suitable candidate for psychological treatment, none of the cases proceeded to the therapy phase of treatment. A number of obstacles, both personal and contextual, were encountered during treatment implementation, preventing or limiting a successful outcome of psychological treatment in each case. An examination of these cases highlights a few of the many obstacles frequently faced when delivering psychological treatment to the South African context. In so doing, this research provides an opportunity to consider the possible reasons for the limited documentation of treatment efficacy within the South African context, as well as to enhance our understanding of and sensitivity towards the cultural and contextual factors playing a role in psychological treatment.
- Full Text:
- Date Issued: 2008
Corporate governance for sustainable development : implications for non-executive directors and the management accounting function
- Jodwana, Thembinkosi Anthony Vincent
- Authors: Jodwana, Thembinkosi Anthony Vincent
- Date: 2008
- Subjects: Corporate governance , Sustainable development , Directors of corporations , Corporations -- Finance -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:8975 , http://hdl.handle.net/10948/807 , Corporate governance , Sustainable development , Directors of corporations , Corporations -- Finance -- Management
- Description: This paper will discuss the role that corporate governance can play in promoting sustainable development. Sustainable development is discussed in relation to three things: • Current development which does not result in the damage and destruction of the environment to the detriment of future inhabitants of this planet. This paper will discuss the role that corporate governance can play in promoting sustainable development. Sustainable development is discussed in relation to three things: • Current development which does not result in the damage and destruction of the environment to the detriment of future inhabitants of this planet.
- Full Text:
- Date Issued: 2008
- Authors: Jodwana, Thembinkosi Anthony Vincent
- Date: 2008
- Subjects: Corporate governance , Sustainable development , Directors of corporations , Corporations -- Finance -- Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:8975 , http://hdl.handle.net/10948/807 , Corporate governance , Sustainable development , Directors of corporations , Corporations -- Finance -- Management
- Description: This paper will discuss the role that corporate governance can play in promoting sustainable development. Sustainable development is discussed in relation to three things: • Current development which does not result in the damage and destruction of the environment to the detriment of future inhabitants of this planet. This paper will discuss the role that corporate governance can play in promoting sustainable development. Sustainable development is discussed in relation to three things: • Current development which does not result in the damage and destruction of the environment to the detriment of future inhabitants of this planet.
- Full Text:
- Date Issued: 2008
Corporeal identification in selected works by Berni Searle
- Authors: Taggart, Emma
- Date: 2008
- Subjects: Searle, Berni Lacan, Jacques, 1901-1981 -- Criticism and interpretation Merleau-Ponty, Maurice, 1908-1961 -- Criticism and interpretation Women artists -- South Africa Body art -- South Africa Self-portraits
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2434 , http://hdl.handle.net/10962/d1004576
- Description: Through a detailed analysis of a selection of works produced between 1999 and 2003 by the South African artist Berni Searle, this thesis explores the need to theorise a corporeal viewer in the process of interpreting art works. Such an approach is particularly necessary when dealing with an artist such as Searle because her work, which deals predominantly with the theme of identity, appeals not only to conceptual but also to experiential and corporeal understandings of identity. Searle incorporates the viewer into an experience of her own identity through a physical identification that the viewer feels in relation to her work. For viewers this means that they are made aware of how their own identity in the moment of interpretation is contingent on visual, mental and physical components. In order to develop this argument the work of psychoanalyst Jacques Lacan and the phenomenologist Maurice Merleau-Ponty is drawn on. These two theorists are very useful for an argument of this nature because both interpret identity as a construction involving an enfolding between the mind and, via the act of vision, the body of the subject. Through an inclusion of the corporeal element in interpretation, this thesis also offers a critique of interpretive theories that would reduce analysis to an interaction between eye and mind by analyzing how the viewer's body participates in the act of looking.
- Full Text:
- Date Issued: 2008
- Authors: Taggart, Emma
- Date: 2008
- Subjects: Searle, Berni Lacan, Jacques, 1901-1981 -- Criticism and interpretation Merleau-Ponty, Maurice, 1908-1961 -- Criticism and interpretation Women artists -- South Africa Body art -- South Africa Self-portraits
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2434 , http://hdl.handle.net/10962/d1004576
- Description: Through a detailed analysis of a selection of works produced between 1999 and 2003 by the South African artist Berni Searle, this thesis explores the need to theorise a corporeal viewer in the process of interpreting art works. Such an approach is particularly necessary when dealing with an artist such as Searle because her work, which deals predominantly with the theme of identity, appeals not only to conceptual but also to experiential and corporeal understandings of identity. Searle incorporates the viewer into an experience of her own identity through a physical identification that the viewer feels in relation to her work. For viewers this means that they are made aware of how their own identity in the moment of interpretation is contingent on visual, mental and physical components. In order to develop this argument the work of psychoanalyst Jacques Lacan and the phenomenologist Maurice Merleau-Ponty is drawn on. These two theorists are very useful for an argument of this nature because both interpret identity as a construction involving an enfolding between the mind and, via the act of vision, the body of the subject. Through an inclusion of the corporeal element in interpretation, this thesis also offers a critique of interpretive theories that would reduce analysis to an interaction between eye and mind by analyzing how the viewer's body participates in the act of looking.
- Full Text:
- Date Issued: 2008
Corporeal tales : an investigation into narrative form in contemporary South African dance and choreography
- Authors: Parker, Alan Charles
- Date: 2008
- Subjects: Sichel, Adrienne Krouse, Matthew Dance -- South Africa Choreography -- South Africa Choreographers -- South Africa Dance criticism -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2157 , http://hdl.handle.net/10962/d1007658
- Description: In the years following the fall of Apartheid in South Africa, dance and choreography have undergone considerable transformation. This investigation stems from one observation relative to this change that has been articulated by two of South Africa's most respected dance critics, Adrienne Sichel and Matthew Krouse. Both critics have noted a growing concern for narrative in South African contemporary choreography, coupled with an apparent propensity for narratives of a distinctly personal and 'autobiographical' nature. In Part One: 'Just after the beginning', the proposed preoccupation with narrative in South African contemporary choreography is discussed in light of the relationship between narrative and the notion of personal identity. The use of the performed narrative as a medium to explore questions about identity is offered as one explanation underpinning this increased proclivity, where the interrogation of the form of the danced narrative provides a site for exploration of personal identity. Part Two: 'Somewhere in the middle' interrogates the notion of form through an in-depth discussion of the experimentation with form within theatrical and antitheatrical dance traditions over the last fifty years. Specific works by three selected South African choreographers (Ginslov, Maqoma and Sabbagha) are discussed in terms of their general approach to narrative form. This provides an illustration of some of the approaches to narrative form emergent in contemporary South African choreographic practices. Part Three: 'Nearing the end' offers Acty Tang's Chaste (2007) as a case study to illustrate the practical application of the dance narrative as a means to interrogate questions relating to personal identity. A detailed analysis of Tang's particular approach to forming the narrative of Chaste is conducted, exposing the intertextual, multimedia and multidisciplinary approach to creating the danced narrative.
- Full Text:
- Date Issued: 2008
- Authors: Parker, Alan Charles
- Date: 2008
- Subjects: Sichel, Adrienne Krouse, Matthew Dance -- South Africa Choreography -- South Africa Choreographers -- South Africa Dance criticism -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2157 , http://hdl.handle.net/10962/d1007658
- Description: In the years following the fall of Apartheid in South Africa, dance and choreography have undergone considerable transformation. This investigation stems from one observation relative to this change that has been articulated by two of South Africa's most respected dance critics, Adrienne Sichel and Matthew Krouse. Both critics have noted a growing concern for narrative in South African contemporary choreography, coupled with an apparent propensity for narratives of a distinctly personal and 'autobiographical' nature. In Part One: 'Just after the beginning', the proposed preoccupation with narrative in South African contemporary choreography is discussed in light of the relationship between narrative and the notion of personal identity. The use of the performed narrative as a medium to explore questions about identity is offered as one explanation underpinning this increased proclivity, where the interrogation of the form of the danced narrative provides a site for exploration of personal identity. Part Two: 'Somewhere in the middle' interrogates the notion of form through an in-depth discussion of the experimentation with form within theatrical and antitheatrical dance traditions over the last fifty years. Specific works by three selected South African choreographers (Ginslov, Maqoma and Sabbagha) are discussed in terms of their general approach to narrative form. This provides an illustration of some of the approaches to narrative form emergent in contemporary South African choreographic practices. Part Three: 'Nearing the end' offers Acty Tang's Chaste (2007) as a case study to illustrate the practical application of the dance narrative as a means to interrogate questions relating to personal identity. A detailed analysis of Tang's particular approach to forming the narrative of Chaste is conducted, exposing the intertextual, multimedia and multidisciplinary approach to creating the danced narrative.
- Full Text:
- Date Issued: 2008
Cranial ontogeny of the sole, dagetichthys marginatus (soleidae), with considerations on the feeding ability of larvae and early juveniles
- Ende, Stephan Siegfried Werner
- Authors: Ende, Stephan Siegfried Werner
- Date: 2008
- Subjects: Soleidae , Fishes -- Larvae -- Food , Flatfishes -- Nutrition , Artemia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5250 , http://hdl.handle.net/10962/d1005093 , Soleidae , Fishes -- Larvae -- Food , Flatfishes -- Nutrition , Artemia
- Description: The overall aim of this study was to gain a better understanding of the feeding mechanisms of the larvae and early juveniles of the sole, Dagetichthys marginatus (Soleidae), with which to assess the suitability of current feeding protocols and to facilitate the development of an appropriate pelleted feed. This was achieved by examining the ontogeny of the cranium of laboratory reared sole, with particular emphasis on those elements associated with feeding and by comparing the cranium of juvenile fish with that of adult fish. At 4 dah (days after hatch) Dagetichthys marginatus larvae develop the first rudimentary branchial arches that facilitates the capture and ingestion of food items. Subsequent development of cranial structures, such as the oral jaws, suspensorium, neurocranium, hyoid and branchial arches and the opercular apparatus enables the larvae, at 16 dah, to switch from ram feeding to suction feeding on live prey. The use of live Artemia nauplii from 4 to 16 dah is therefore appropriate. The first morphological asymmetries developed at 16 dah in the dentaries and at 22 dah the maxillae and the premaxillae began to show asymmetries. Teeth were present only on the blind side of the oral jaw elements and during this period (16 to 22 dah) the existing elements began to ossify. From 16 to 35 dah the standard feeding protocol consists of a combination of pelagic (Artemia metanauplii) and benthic prey (dead, frozen Artemia nauplii) and from 25 dah onwards a sinking pellet is provided. The time (dah) at which frozen Artemia and sinking pellets were provided, appropriately corresponded to the initiation of benthic feeding behaviour. However at this stage the use of pelagic Artemia metanauplii is inappropriate and unnecessary. At 31 dah the cranial morphology resembled that of adult fish. Adult D. marginatus display extreme asymmetries among the elements of the oral jaws, the suspensorium and certain elements of the neurocranium. Elements on the blind side are larger and more robust than those on the ocular side and are adapted for feeding, while those on the ocular side appear to have a respiratory function. From 31 dah the cranial elements are identical to those of adult fish, suggesting that no further feeding behavioural changes occurred and that a sinking pellet, of which the nutrient composition meets the requirements of the fish, would be appropriate for ongrowing.
- Full Text:
- Date Issued: 2008
- Authors: Ende, Stephan Siegfried Werner
- Date: 2008
- Subjects: Soleidae , Fishes -- Larvae -- Food , Flatfishes -- Nutrition , Artemia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5250 , http://hdl.handle.net/10962/d1005093 , Soleidae , Fishes -- Larvae -- Food , Flatfishes -- Nutrition , Artemia
- Description: The overall aim of this study was to gain a better understanding of the feeding mechanisms of the larvae and early juveniles of the sole, Dagetichthys marginatus (Soleidae), with which to assess the suitability of current feeding protocols and to facilitate the development of an appropriate pelleted feed. This was achieved by examining the ontogeny of the cranium of laboratory reared sole, with particular emphasis on those elements associated with feeding and by comparing the cranium of juvenile fish with that of adult fish. At 4 dah (days after hatch) Dagetichthys marginatus larvae develop the first rudimentary branchial arches that facilitates the capture and ingestion of food items. Subsequent development of cranial structures, such as the oral jaws, suspensorium, neurocranium, hyoid and branchial arches and the opercular apparatus enables the larvae, at 16 dah, to switch from ram feeding to suction feeding on live prey. The use of live Artemia nauplii from 4 to 16 dah is therefore appropriate. The first morphological asymmetries developed at 16 dah in the dentaries and at 22 dah the maxillae and the premaxillae began to show asymmetries. Teeth were present only on the blind side of the oral jaw elements and during this period (16 to 22 dah) the existing elements began to ossify. From 16 to 35 dah the standard feeding protocol consists of a combination of pelagic (Artemia metanauplii) and benthic prey (dead, frozen Artemia nauplii) and from 25 dah onwards a sinking pellet is provided. The time (dah) at which frozen Artemia and sinking pellets were provided, appropriately corresponded to the initiation of benthic feeding behaviour. However at this stage the use of pelagic Artemia metanauplii is inappropriate and unnecessary. At 31 dah the cranial morphology resembled that of adult fish. Adult D. marginatus display extreme asymmetries among the elements of the oral jaws, the suspensorium and certain elements of the neurocranium. Elements on the blind side are larger and more robust than those on the ocular side and are adapted for feeding, while those on the ocular side appear to have a respiratory function. From 31 dah the cranial elements are identical to those of adult fish, suggesting that no further feeding behavioural changes occurred and that a sinking pellet, of which the nutrient composition meets the requirements of the fish, would be appropriate for ongrowing.
- Full Text:
- Date Issued: 2008
Critiquing the viability of a trade biased approach to regional integration in Southern Africa
- Authors: Chipendo, Kudakwashe
- Date: 2008
- Subjects: Regionalism -- Africa, Southern , International economic integration
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11409 , http://hdl.handle.net/10353/163 , Regionalism -- Africa, Southern , International economic integration
- Description: Africa’s international marginalization is preponderantly conceptualized through world systems approaches, particularly structural dependency. Consequently, the region’s socioeconomic quagmire, characterized by economic stagnation, abysmal poverty, inequality and foreign dependency, is often attributed to its colonial heritage. Particular reference is made to the small size of the African state and its structural specialization in primary production. Collective self reliance based on mutual interdependence (regional integration) thus suggests itself as a logical way to overcome the structural constraints imposed by the small size of the state, while at the same time representing a viable alternative to asymmetric trade with developed countries. It is within the context of this theoretical framework that this study critiques the predisposition of the regional body in Southern Africa, the Southern African Development Community (SADC), towards a trade biased approach to regional integration (market integration). This critique is based on theoretical and empirical findings showing that trade led strategies are primarily suited for developed countries with robust manufacturing industries and complimentary production structures. Countries in Southern Africa are however characterized by a near absence of manufacturing industries, are at different levels of development and show low levels of trade complementarities. This study therefore concludes that market integration is an inappropriate strategy for regional integration in Southern Africa and in the process suggests development integration – a political economy approach, as an alternative.
- Full Text:
- Date Issued: 2008
- Authors: Chipendo, Kudakwashe
- Date: 2008
- Subjects: Regionalism -- Africa, Southern , International economic integration
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11409 , http://hdl.handle.net/10353/163 , Regionalism -- Africa, Southern , International economic integration
- Description: Africa’s international marginalization is preponderantly conceptualized through world systems approaches, particularly structural dependency. Consequently, the region’s socioeconomic quagmire, characterized by economic stagnation, abysmal poverty, inequality and foreign dependency, is often attributed to its colonial heritage. Particular reference is made to the small size of the African state and its structural specialization in primary production. Collective self reliance based on mutual interdependence (regional integration) thus suggests itself as a logical way to overcome the structural constraints imposed by the small size of the state, while at the same time representing a viable alternative to asymmetric trade with developed countries. It is within the context of this theoretical framework that this study critiques the predisposition of the regional body in Southern Africa, the Southern African Development Community (SADC), towards a trade biased approach to regional integration (market integration). This critique is based on theoretical and empirical findings showing that trade led strategies are primarily suited for developed countries with robust manufacturing industries and complimentary production structures. Countries in Southern Africa are however characterized by a near absence of manufacturing industries, are at different levels of development and show low levels of trade complementarities. This study therefore concludes that market integration is an inappropriate strategy for regional integration in Southern Africa and in the process suggests development integration – a political economy approach, as an alternative.
- Full Text:
- Date Issued: 2008
Cross-cultural normative indicators on the Wechsler Memory Scale (WMS) associate learning and visual reproduction subtests
- Authors: Fike, Lauren
- Date: 2008
- Subjects: Wechsler Memory Scale -- Cross-cultural studies Memory -- Testing Memory -- Cross-cultural studies Memory Assessment Scales Short-term memory -- Testing Long-term memory -- Testing
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2975 , http://hdl.handle.net/10962/d1002484
- Description: A comprehensive battery of commonly used neuropsychological tests, including the WMS Associate Learning and Visual Reproduction subtests, forming the focus of this study, were administered to a southern African sample (n = 33, age range 18-40). This sample composed of black South African, IsiXhosa speakers with an educational level of Grade 11 and 12, derived through DET and former DET schooling. The gender demographics were as follows; females n = 21 and males n = 12. This sample was purposefully selected based on current cross-cultural research which suggests that individuals matching these above-mentioned demographics are significantly disadvantaged when compared to available neuropsychological norms. This is due to the fact that current norms have been created in contexts with socio-cultural influences; including culture, language and quantity and quality of education distinctly dissimilar to individuals like that composed in the sample. Hence the purpose of this study was fourfold namely; 1) Describe and consider socio-cultural factors and the influence on test performance 2) Provide descriptive and preliminary normative data on this neuropsychologically underrepresented population 3) Compare test performance between age and gender through stratification of the sample and finally to 4) Evaluate the current norms of the two WMS subtests and assess their validity for black South Africans with DET and former DET schooling with comparisons to the results found in the study. Information derived from the statistical analyses indicated that a higher performance in favour of the younger group over the older age range was consistently found for both WMS subtests. With regards to gender, some higher means were evident for the male population in the sample than was produced by the female group. Lastly, due to the fact that most scores derived from the sample were considerably lower when compared to the available norms, it is felt that socio-cultural factors prevalent to this population are a significant cause of lower test performance and thus warrant the development of appropriate normative indicators.
- Full Text:
- Date Issued: 2008
- Authors: Fike, Lauren
- Date: 2008
- Subjects: Wechsler Memory Scale -- Cross-cultural studies Memory -- Testing Memory -- Cross-cultural studies Memory Assessment Scales Short-term memory -- Testing Long-term memory -- Testing
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2975 , http://hdl.handle.net/10962/d1002484
- Description: A comprehensive battery of commonly used neuropsychological tests, including the WMS Associate Learning and Visual Reproduction subtests, forming the focus of this study, were administered to a southern African sample (n = 33, age range 18-40). This sample composed of black South African, IsiXhosa speakers with an educational level of Grade 11 and 12, derived through DET and former DET schooling. The gender demographics were as follows; females n = 21 and males n = 12. This sample was purposefully selected based on current cross-cultural research which suggests that individuals matching these above-mentioned demographics are significantly disadvantaged when compared to available neuropsychological norms. This is due to the fact that current norms have been created in contexts with socio-cultural influences; including culture, language and quantity and quality of education distinctly dissimilar to individuals like that composed in the sample. Hence the purpose of this study was fourfold namely; 1) Describe and consider socio-cultural factors and the influence on test performance 2) Provide descriptive and preliminary normative data on this neuropsychologically underrepresented population 3) Compare test performance between age and gender through stratification of the sample and finally to 4) Evaluate the current norms of the two WMS subtests and assess their validity for black South Africans with DET and former DET schooling with comparisons to the results found in the study. Information derived from the statistical analyses indicated that a higher performance in favour of the younger group over the older age range was consistently found for both WMS subtests. With regards to gender, some higher means were evident for the male population in the sample than was produced by the female group. Lastly, due to the fact that most scores derived from the sample were considerably lower when compared to the available norms, it is felt that socio-cultural factors prevalent to this population are a significant cause of lower test performance and thus warrant the development of appropriate normative indicators.
- Full Text:
- Date Issued: 2008
Curriculum recontextualising using gardens for the health promotion in the life orientation learning area of the senior phase
- Authors: Jenkins, Msawenkosi Wiseman
- Date: 2008
- Subjects: Environmental education -- South Africa -- Eastern Cape -- Case studies School gardens -- South Africa -- Eastern Cape Gardening -- Study and teaching (Secondary) -- South Africa -- Eastern Cape Environmental education -- Curricula -- South Africa -- Eastern Cape Environmental education -- Curricula -- Case studies Environmental policy -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1487 , http://hdl.handle.net/10962/d1003368
- Description: With a view to understanding how curriculum is interpreted at classroom practice level, the study examined three stories of how the environmental discourse of the National Curriculum Statements (R-9) was recontextualised using school gardens in the Life Orientation Learning Area for the Senior Phase. To understand how the curriculum is recontextualised, I used Bernstein's theory of recontexutalisation where he explained how official pedagogic discourse (OPD) (in this case the environmental discourse is first delocated once it is transferred from the field of production (FOP) and relocated in the recontextualising field (where teacher educators and departmental officials mediate the discourse) and in the field of reproduction (FOR) which is the classroom and school. Bernstein explained that as the discourse is delocated and relocated it undergoes transformation. This transformation is influenced by practitioners' prior-knowledge, experience, culture and beliefs and other factors. To understand how transformation of the environmental discourse takes place, Bernstein's conceptual constructs of selective appropriation and ideological transformation were applied to an interpretation of three lesson processes, to explain how the discourse was changed. Each lesson was reviewed in terms of the selective appropriations and ideological transformations which took place. All three of the lessons observed took place in one school, and as such the study is designed as an interpretive case study where I have tried to make meaning from a rich, thick description of a specific case context. The school is located in Bizana, one of the villages in the O.R. Tambo District Municipality in the Eastern Cape Province,, and is currently in the process of implementing South Africa’s new National Curriculum Statement (NCS) like all other schools in South Africa. In conducting the research I observed lessons, interviewed the learners and teachers, and a community member and the manager of the SANBI greening project, and I also analysed documents which included the NCS for Life Orientation, and teachers planning documents and learners work produced in the lessons. I started the study by conducting a document analysis of the NCS, through which I identified dimensions of the Official Pedagogic Discourse. This was used as a framework to review the lessons to understand how the OPD was being recontextualised. The study concludes by discussing the key findings of the study in the form of a set of analytical statements. Some of the findings indicate that teachers have not been given adequate training for understanding and implementing the NCS which affects the recontextualisation process. The study shows that there is a dire need for professional development if the OPD is to be interpreted adequately by teachers so that its implementation at the meso and micro- levels becomes clear and effective.
- Full Text:
- Date Issued: 2008
- Authors: Jenkins, Msawenkosi Wiseman
- Date: 2008
- Subjects: Environmental education -- South Africa -- Eastern Cape -- Case studies School gardens -- South Africa -- Eastern Cape Gardening -- Study and teaching (Secondary) -- South Africa -- Eastern Cape Environmental education -- Curricula -- South Africa -- Eastern Cape Environmental education -- Curricula -- Case studies Environmental policy -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1487 , http://hdl.handle.net/10962/d1003368
- Description: With a view to understanding how curriculum is interpreted at classroom practice level, the study examined three stories of how the environmental discourse of the National Curriculum Statements (R-9) was recontextualised using school gardens in the Life Orientation Learning Area for the Senior Phase. To understand how the curriculum is recontextualised, I used Bernstein's theory of recontexutalisation where he explained how official pedagogic discourse (OPD) (in this case the environmental discourse is first delocated once it is transferred from the field of production (FOP) and relocated in the recontextualising field (where teacher educators and departmental officials mediate the discourse) and in the field of reproduction (FOR) which is the classroom and school. Bernstein explained that as the discourse is delocated and relocated it undergoes transformation. This transformation is influenced by practitioners' prior-knowledge, experience, culture and beliefs and other factors. To understand how transformation of the environmental discourse takes place, Bernstein's conceptual constructs of selective appropriation and ideological transformation were applied to an interpretation of three lesson processes, to explain how the discourse was changed. Each lesson was reviewed in terms of the selective appropriations and ideological transformations which took place. All three of the lessons observed took place in one school, and as such the study is designed as an interpretive case study where I have tried to make meaning from a rich, thick description of a specific case context. The school is located in Bizana, one of the villages in the O.R. Tambo District Municipality in the Eastern Cape Province,, and is currently in the process of implementing South Africa’s new National Curriculum Statement (NCS) like all other schools in South Africa. In conducting the research I observed lessons, interviewed the learners and teachers, and a community member and the manager of the SANBI greening project, and I also analysed documents which included the NCS for Life Orientation, and teachers planning documents and learners work produced in the lessons. I started the study by conducting a document analysis of the NCS, through which I identified dimensions of the Official Pedagogic Discourse. This was used as a framework to review the lessons to understand how the OPD was being recontextualised. The study concludes by discussing the key findings of the study in the form of a set of analytical statements. Some of the findings indicate that teachers have not been given adequate training for understanding and implementing the NCS which affects the recontextualisation process. The study shows that there is a dire need for professional development if the OPD is to be interpreted adequately by teachers so that its implementation at the meso and micro- levels becomes clear and effective.
- Full Text:
- Date Issued: 2008