Frontier heartland : analysing the impact of forestry and tourism on 'white' identity in Maclear
- Authors: Griffin, Donna-Lee
- Date: 2006
- Subjects: Agriculture -- South Africa -- Maclear Agriculture -- Economic aspects -- South Africa -- Maclear Economic development -- South Africa -- Maclear Tourism management -- South Africa -- Maclear Forests and forestry -- Economic aspects -- South Africa -- Maclear Whites -- South Africa -- Maclear -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2115 , http://hdl.handle.net/10962/d1008066
- Description: The North Eastern Cape in South Africa is part of a larger province that is in desperate need of job creation and economic development. In light of these needs, efforts have been made by members of the community and outside investors to generate new forms of income in the area. These economic developments emerged in the form of small-scale tourism initiatives and commercial forestry. The impact of these developments on the small community of Maclear differs in nature and is bringing about social change and influencing identity. In this thesis, I explore the effects of each of these developments on the local farming community, particularly the established white English-speaking farmers. For various important reasons, such as the changes to land use patterns occurring around them in terms of forestry and tourism initiatives, I chose to examine the situation of this minority. In general discussions and portrayals of white farmers, it is hypothesized that whites living in small farming communities are resistant to change, politically stagnant and socially conservative. In this thesis I test this hypothesis and investigate what South Africans might see as the core, or whether there is a core of, white settler identity. TIle idea of 'frontiers' being heartlands was emphasized in Maclear as residents spoke about the pioneering efforts of their forefathers and discussed these efforts as the essence of their identity. Forestry is a contemporary ' frontier' encroaching on these white Settlers. A dynamic concept of landscape is central to these identity construction efforts. In this thesis I explore, through different articulations of landscape, how residents, recent arrivals and investors attempt to embed their identity and resources in the community. I ask whether it is possible for members of the white community to produce an alternate and politically viable interpretation of landscape in post-apartheid South Africa. Can land and landscape offer them a sense of belonging and identity? What is their experience in view of the impositions of major investors who see land purely as an economic unit? The research does not explicitly investigate how 'new' black farmers and farming groups perceive and experience land and landscape. What is noted is the imagined passivity of black labourers on white-owned land. This thesis touches on issues inlportant to democratic change and progress in South Africa. How will the new government deal with the thorny issue of land redistribution in the face of competing claims for land and identity? How will the various sections of the white community (in this case the farming community) negotiate their identity in the new South Africa? Also, what do ' frontier' towns like Maclear reveal about the nature of white identity in post-apartheid South Africa? This thesis relies on gender and constructionist theories of landscape as developed by Appadurai (1996) to explain the dynamic nature of landscape in Maclear. It also explores and appraises the idea of ' frontier'. In the analysis of identity, I take into account that white settlers 'success' relies in part on the settlers ability to adapt to the ' frontier' and their ability to construct a new identity in their newfound 'homeland' (simliar to Paul Gilroy's (1993) "double consciousness). Keywords: South Africa, Maclear, Farming, White Identity, Landscape and Tourism.
- Full Text:
- Authors: Griffin, Donna-Lee
- Date: 2006
- Subjects: Agriculture -- South Africa -- Maclear Agriculture -- Economic aspects -- South Africa -- Maclear Economic development -- South Africa -- Maclear Tourism management -- South Africa -- Maclear Forests and forestry -- Economic aspects -- South Africa -- Maclear Whites -- South Africa -- Maclear -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2115 , http://hdl.handle.net/10962/d1008066
- Description: The North Eastern Cape in South Africa is part of a larger province that is in desperate need of job creation and economic development. In light of these needs, efforts have been made by members of the community and outside investors to generate new forms of income in the area. These economic developments emerged in the form of small-scale tourism initiatives and commercial forestry. The impact of these developments on the small community of Maclear differs in nature and is bringing about social change and influencing identity. In this thesis, I explore the effects of each of these developments on the local farming community, particularly the established white English-speaking farmers. For various important reasons, such as the changes to land use patterns occurring around them in terms of forestry and tourism initiatives, I chose to examine the situation of this minority. In general discussions and portrayals of white farmers, it is hypothesized that whites living in small farming communities are resistant to change, politically stagnant and socially conservative. In this thesis I test this hypothesis and investigate what South Africans might see as the core, or whether there is a core of, white settler identity. TIle idea of 'frontiers' being heartlands was emphasized in Maclear as residents spoke about the pioneering efforts of their forefathers and discussed these efforts as the essence of their identity. Forestry is a contemporary ' frontier' encroaching on these white Settlers. A dynamic concept of landscape is central to these identity construction efforts. In this thesis I explore, through different articulations of landscape, how residents, recent arrivals and investors attempt to embed their identity and resources in the community. I ask whether it is possible for members of the white community to produce an alternate and politically viable interpretation of landscape in post-apartheid South Africa. Can land and landscape offer them a sense of belonging and identity? What is their experience in view of the impositions of major investors who see land purely as an economic unit? The research does not explicitly investigate how 'new' black farmers and farming groups perceive and experience land and landscape. What is noted is the imagined passivity of black labourers on white-owned land. This thesis touches on issues inlportant to democratic change and progress in South Africa. How will the new government deal with the thorny issue of land redistribution in the face of competing claims for land and identity? How will the various sections of the white community (in this case the farming community) negotiate their identity in the new South Africa? Also, what do ' frontier' towns like Maclear reveal about the nature of white identity in post-apartheid South Africa? This thesis relies on gender and constructionist theories of landscape as developed by Appadurai (1996) to explain the dynamic nature of landscape in Maclear. It also explores and appraises the idea of ' frontier'. In the analysis of identity, I take into account that white settlers 'success' relies in part on the settlers ability to adapt to the ' frontier' and their ability to construct a new identity in their newfound 'homeland' (simliar to Paul Gilroy's (1993) "double consciousness). Keywords: South Africa, Maclear, Farming, White Identity, Landscape and Tourism.
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Frozen in time to reclaiming one's life: the evaluation of the Ehlers and Clark Cognitive Therapy Model in the assessment and treatment of a hijacking survivor
- Authors: Smith, Tracy-Ann
- Date: 2006
- Subjects: Cognitive therapy -- Methods , Post-traumatic stress disorder -- Patients -- Rehabilitation -- South Africa , Post-traumatic stress disorder -- Patients -- Case studies -- South Africa , Post-traumatic stress disorder -- Treatment -- South Africa , Victims of crimes -- Counseling of
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3060 , http://hdl.handle.net/10962/d1002569 , Cognitive therapy -- Methods , Post-traumatic stress disorder -- Patients -- Rehabilitation -- South Africa , Post-traumatic stress disorder -- Patients -- Case studies -- South Africa , Post-traumatic stress disorder -- Treatment -- South Africa , Victims of crimes -- Counseling of
- Description: The aim of this research study was achieved by providing support for the effectiveness and the transportability of the Ehlers and Clark (2000) cognitive therapy model for the assessment and treatment of PTSD. Furthermore, the contextual factors which were important in this case were investigated and documented. However, research within the social sciences will inevitably produce various limitations due to the unique individuals and dynamic phenomena that are studied.
- Full Text:
- Authors: Smith, Tracy-Ann
- Date: 2006
- Subjects: Cognitive therapy -- Methods , Post-traumatic stress disorder -- Patients -- Rehabilitation -- South Africa , Post-traumatic stress disorder -- Patients -- Case studies -- South Africa , Post-traumatic stress disorder -- Treatment -- South Africa , Victims of crimes -- Counseling of
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3060 , http://hdl.handle.net/10962/d1002569 , Cognitive therapy -- Methods , Post-traumatic stress disorder -- Patients -- Rehabilitation -- South Africa , Post-traumatic stress disorder -- Patients -- Case studies -- South Africa , Post-traumatic stress disorder -- Treatment -- South Africa , Victims of crimes -- Counseling of
- Description: The aim of this research study was achieved by providing support for the effectiveness and the transportability of the Ehlers and Clark (2000) cognitive therapy model for the assessment and treatment of PTSD. Furthermore, the contextual factors which were important in this case were investigated and documented. However, research within the social sciences will inevitably produce various limitations due to the unique individuals and dynamic phenomena that are studied.
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Gazing at horror: body performance in the wake of mass social trauma
- Authors: Tang, Cheong Wai Acty
- Date: 2006
- Subjects: Abramovic, Marina Performance art -- South Africa Drama -- Psychological aspects Psychic trauma Performance art -- Psychological aspects Loss (Psychology) Ritual in art Art, Modern -- 20th century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2149 , http://hdl.handle.net/10962/d1002381
- Description: This thesis explores various dilemmas in making theatre performances in the context of social disruption, trauma and death. Diverse discourses are drawn in to consider issues of body, subjectivity and spectatorship, refracted through the writer’s experiences of and discontent with making theatre. Written in a fractal-like structure, rather than a linear progression, this thesis unsettles discourses of truth, thus simultaneously intervening in debates about the epistemologies of the body and of theatre in context of the academy. Chapter 1: Methodological Anxieties Psychoanalytic theory provides a way in for investigating the dynamics of theatrical performance and its corporeal presence, by focusing on desire and its implication in the notions of loss and anxiety. The theories of the unconscious and the gaze have epistemological implications, shifting definitions of “presence” and “truth” in theatre performance and writing about theatre. This chapter tries to outline the rationale for, as well as to enact, an alternative methodology for writing, as an ethical response to loss that does not insist on consensus and truth. Chapter 2: (Refusing to) Look at Trauma This chapter examines the politics that strives to make suffering visible. Discursive binaries of public/private, dead/living, and invisible/visible underlie the politics of AIDS and sexuality. These discourses impact on the reception of Bill T. Jones's choreography, despite his use of modernist artistic processes in search of a bodily presence that aims to collapse the binary of representation (text) and its subject (being). The theory of the gaze shows this politics to be a phallocentric discourse; and narrative analysis traces the metanarrative that results in the commodification of oppositional identities, so that spectators participate in the politics as consumers. An ethical artistic response thus needs to shift its focus to the subjectivity of the spectator. Chapter 3: The Screen and the Viewer’s Blindness By appealing to a transcendent reality, and by constituting spectators as a participative community, ritual theatre claims to enact change. The “truth” of ritual rests not on rational knowledge, but on the performer’s competence to produce a shamanic presence, which director Brett Bailey embraces in his early work. Ritual presence operates by identification and belonging to a father/god as the source of meaning; but it represses the loss of this originary wholeness. Spectators of ritual theatre are drawn into an enactment of communion/community, the centre of which is, however, loss/emptiness. The claim of enacting change becomes problematic for its absence of truth. Bailey attempts to perform a hybrid, postcolonial aesthetics; but the problem rests in the larger context of performing the notion of “South Africa”, a communal identity hardened around the metanarrative of suffering, abjecting those that do not belong to the land of the father/god – foreigners that unsettle the meaning of South African identity. Conclusion: Bodies of Discontent The South African stage is circumscribed by political and economic discourses; the problematization of national identity is also a problematization of image-identification in the theatre. In search for a way to unsettle these interrogative discourses, two moments of performing foreignness are examined, one fictional, one theatrical. These moments enact a parallel to the feminine hysteric, who disturbs the phallocentric truth of the psychoanalyst through body performance. These moments of disturbing spectatorship are reflected in the works of performance artist Marina Abramovic. Her explorations into passive-aggression, shamanism and finally theatricality and the morality of spectatorship allow for an overview of the issues raised in this thesis regarding body, viewing, and subjecthood. Sensitivity to the body and its discontent on the part of the viewer becomes crucial to ethical performance.
- Full Text:
- Authors: Tang, Cheong Wai Acty
- Date: 2006
- Subjects: Abramovic, Marina Performance art -- South Africa Drama -- Psychological aspects Psychic trauma Performance art -- Psychological aspects Loss (Psychology) Ritual in art Art, Modern -- 20th century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2149 , http://hdl.handle.net/10962/d1002381
- Description: This thesis explores various dilemmas in making theatre performances in the context of social disruption, trauma and death. Diverse discourses are drawn in to consider issues of body, subjectivity and spectatorship, refracted through the writer’s experiences of and discontent with making theatre. Written in a fractal-like structure, rather than a linear progression, this thesis unsettles discourses of truth, thus simultaneously intervening in debates about the epistemologies of the body and of theatre in context of the academy. Chapter 1: Methodological Anxieties Psychoanalytic theory provides a way in for investigating the dynamics of theatrical performance and its corporeal presence, by focusing on desire and its implication in the notions of loss and anxiety. The theories of the unconscious and the gaze have epistemological implications, shifting definitions of “presence” and “truth” in theatre performance and writing about theatre. This chapter tries to outline the rationale for, as well as to enact, an alternative methodology for writing, as an ethical response to loss that does not insist on consensus and truth. Chapter 2: (Refusing to) Look at Trauma This chapter examines the politics that strives to make suffering visible. Discursive binaries of public/private, dead/living, and invisible/visible underlie the politics of AIDS and sexuality. These discourses impact on the reception of Bill T. Jones's choreography, despite his use of modernist artistic processes in search of a bodily presence that aims to collapse the binary of representation (text) and its subject (being). The theory of the gaze shows this politics to be a phallocentric discourse; and narrative analysis traces the metanarrative that results in the commodification of oppositional identities, so that spectators participate in the politics as consumers. An ethical artistic response thus needs to shift its focus to the subjectivity of the spectator. Chapter 3: The Screen and the Viewer’s Blindness By appealing to a transcendent reality, and by constituting spectators as a participative community, ritual theatre claims to enact change. The “truth” of ritual rests not on rational knowledge, but on the performer’s competence to produce a shamanic presence, which director Brett Bailey embraces in his early work. Ritual presence operates by identification and belonging to a father/god as the source of meaning; but it represses the loss of this originary wholeness. Spectators of ritual theatre are drawn into an enactment of communion/community, the centre of which is, however, loss/emptiness. The claim of enacting change becomes problematic for its absence of truth. Bailey attempts to perform a hybrid, postcolonial aesthetics; but the problem rests in the larger context of performing the notion of “South Africa”, a communal identity hardened around the metanarrative of suffering, abjecting those that do not belong to the land of the father/god – foreigners that unsettle the meaning of South African identity. Conclusion: Bodies of Discontent The South African stage is circumscribed by political and economic discourses; the problematization of national identity is also a problematization of image-identification in the theatre. In search for a way to unsettle these interrogative discourses, two moments of performing foreignness are examined, one fictional, one theatrical. These moments enact a parallel to the feminine hysteric, who disturbs the phallocentric truth of the psychoanalyst through body performance. These moments of disturbing spectatorship are reflected in the works of performance artist Marina Abramovic. Her explorations into passive-aggression, shamanism and finally theatricality and the morality of spectatorship allow for an overview of the issues raised in this thesis regarding body, viewing, and subjecthood. Sensitivity to the body and its discontent on the part of the viewer becomes crucial to ethical performance.
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Habitat segregation in competing species of intertidal mussels in South Africa
- Authors: Bownes, Sarah
- Date: 2006
- Subjects: Mussels -- South Africa Mussels -- Growth Mussels -- Habitat -- South Africa Mussels -- Larvae Perna -- South Africa Mytilus galloprovincialis -- South Africa Choromytilus meridionalis -- South Africa Mytilidae -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5706 , http://hdl.handle.net/10962/d1005392
- Description: Mytilus galloprovincialis is invasive on rocky shores on the west coast of South Africa where it has become the dominant intertidal mussel. The success of this species on the west coast and its superior competitive abilities, have led to concern that it may become invasive on the south coast at the expense of the indigenous mussel Perna perna. On shores where these species co-occur, there appears to be habitat segregation among zones occupied by mussels. M.galloprovincialis dominates the high-shore and P.perna the low-shore, with a mixed zone at mid-shore level. This study examined the factors responsible for these differences in distribution and abundance. The study was conducted in Plettenberg Bay and Tsitsikamma (70km apart) on the south coast of South Africa. Each site included two randomly selected locations (300-400m apart). A third mussel species, Choromytilus meridionalis, is found in large numbers at the sand/rock interface at one location in Plettenberg Bay. Aspects of settlement, recruitment, growth and mortality of juvenile and adult mussels were examined at different tidal heights at each site. Quantitative analysis of mussel population structure at these sites supported the initial observation of vertical habitat segregation. Post-larvae were identified to species and this was confirmed using hinge morphology and mitochondrial DNA analysis. Size at settlement was determined for each species to differentiate between primary and secondary settlement. Adult distribution of C.meridionalis was primarily determined by settlement, which was highly selective in this species. Settlement, recruitment and growth of P.perna decreased with increasing tidal height, while post-settlement mortality and adult mortality increased higher upshore. Thus all aspects of P.perna’s life history contribute to the adult distribution of this species. Presumably, the abundance of P.perna on the high-shore is initially limited by recruitment while those that survive remain prone to elimination throughout adulthood. M.galloprovincialis displayed the same patterns of settlement and recruitment as P.perna. However, post-settlement mortality in this species was consistently low in the low and high zones. Juvenile growth also decreased upshore, suggesting that M.galloprovincialis may be able to maintain high densities on the high-shore through the persistence of successive settlements of slow-growing individuals. The low cover of M.galloprovincialis on the lowshore appeared to be determined by adult interactions. M.galloprovincialis experienced significantly higher adult mortality rates than P.perna in this zone. There were seasonal variations in the competitive advantages enjoyed by each species through growth, recruitment or mortality on the low-shore. In summer, P.perna had higher recruitment rates, faster growth and lower mortality rates, while M.galloprovincialis had slightly higher recruitment rates and faster growth rates in winter. P.perna is a warm water species while M.galloprovincialis thrives on the cold-temperate west coast of South Africa. Therefore both species appear to be at the edge of their optimal temperature regimes on the south coast, which may explain the seasonal advantages of each. Nevertheless, P.perna has maintained spatial dominance on the low-shore suggesting that it may ultimately be the winner in competition between these species. M.galloprovincialis appears to have a refuge from competition with P.perna on the high-shore due to its greater tolerance of desiccation stress, while being competitively excluded from the low-shore. Warm water temperatures coupled with poor recruitment rates at most sites may limit the success of M.galloprovincialis on this coast.
- Full Text:
- Authors: Bownes, Sarah
- Date: 2006
- Subjects: Mussels -- South Africa Mussels -- Growth Mussels -- Habitat -- South Africa Mussels -- Larvae Perna -- South Africa Mytilus galloprovincialis -- South Africa Choromytilus meridionalis -- South Africa Mytilidae -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5706 , http://hdl.handle.net/10962/d1005392
- Description: Mytilus galloprovincialis is invasive on rocky shores on the west coast of South Africa where it has become the dominant intertidal mussel. The success of this species on the west coast and its superior competitive abilities, have led to concern that it may become invasive on the south coast at the expense of the indigenous mussel Perna perna. On shores where these species co-occur, there appears to be habitat segregation among zones occupied by mussels. M.galloprovincialis dominates the high-shore and P.perna the low-shore, with a mixed zone at mid-shore level. This study examined the factors responsible for these differences in distribution and abundance. The study was conducted in Plettenberg Bay and Tsitsikamma (70km apart) on the south coast of South Africa. Each site included two randomly selected locations (300-400m apart). A third mussel species, Choromytilus meridionalis, is found in large numbers at the sand/rock interface at one location in Plettenberg Bay. Aspects of settlement, recruitment, growth and mortality of juvenile and adult mussels were examined at different tidal heights at each site. Quantitative analysis of mussel population structure at these sites supported the initial observation of vertical habitat segregation. Post-larvae were identified to species and this was confirmed using hinge morphology and mitochondrial DNA analysis. Size at settlement was determined for each species to differentiate between primary and secondary settlement. Adult distribution of C.meridionalis was primarily determined by settlement, which was highly selective in this species. Settlement, recruitment and growth of P.perna decreased with increasing tidal height, while post-settlement mortality and adult mortality increased higher upshore. Thus all aspects of P.perna’s life history contribute to the adult distribution of this species. Presumably, the abundance of P.perna on the high-shore is initially limited by recruitment while those that survive remain prone to elimination throughout adulthood. M.galloprovincialis displayed the same patterns of settlement and recruitment as P.perna. However, post-settlement mortality in this species was consistently low in the low and high zones. Juvenile growth also decreased upshore, suggesting that M.galloprovincialis may be able to maintain high densities on the high-shore through the persistence of successive settlements of slow-growing individuals. The low cover of M.galloprovincialis on the lowshore appeared to be determined by adult interactions. M.galloprovincialis experienced significantly higher adult mortality rates than P.perna in this zone. There were seasonal variations in the competitive advantages enjoyed by each species through growth, recruitment or mortality on the low-shore. In summer, P.perna had higher recruitment rates, faster growth and lower mortality rates, while M.galloprovincialis had slightly higher recruitment rates and faster growth rates in winter. P.perna is a warm water species while M.galloprovincialis thrives on the cold-temperate west coast of South Africa. Therefore both species appear to be at the edge of their optimal temperature regimes on the south coast, which may explain the seasonal advantages of each. Nevertheless, P.perna has maintained spatial dominance on the low-shore suggesting that it may ultimately be the winner in competition between these species. M.galloprovincialis appears to have a refuge from competition with P.perna on the high-shore due to its greater tolerance of desiccation stress, while being competitively excluded from the low-shore. Warm water temperatures coupled with poor recruitment rates at most sites may limit the success of M.galloprovincialis on this coast.
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High speed end-to-end connection management in a bridged IEEE 1394 network of professional audio devices
- Authors: Okai-Tettey, Harold A
- Date: 2006
- Subjects: IEEE 1394 (Standard) Digital communications Computer networks Sound -- Recording and reproducing -- Digital techniques Computer sound processing
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4653 , http://hdl.handle.net/10962/d1006638
- Description: A number of companies have developed a variety of network approaches to the transfer of audio and MIDI data. By doing this, they have addressed the configuration complications that were present when using direct patching for analogue audio, digital audio, word clock, and control connections. Along with their approaches, controlling software, usually running on a PC, is used to set up and manage audio routings from the outputs to the inputs of devices. However one of the advantages of direct patching is the conceptual simplicity it provides for a user in connecting plugs of devices, the ability to connect from the host plug of one device to the host plug of another. The connection management or routing applications of the current audio networks do not allow for such a capability, and instead employ what is referred to as a two-step approach to connection management. This two-step approach requires that devices be first configured at the transport layer of the network for input and output routings, after which the transmit and receive plugs of devices are manually configured to transmit or receive data. From a user’s point of view, it is desirable for the connection management or audio routing applications of the current audio networks to be able to establish routings directly between the host plugs of devices, and not the audio channels exposed by a network’s transport, as is currently the case. The main goal of this work has been to retain the conceptual simplicity of point-to-point connection management within digital audio networks, while gaining all the benefits that digital audio networking can offer.
- Full Text:
- Authors: Okai-Tettey, Harold A
- Date: 2006
- Subjects: IEEE 1394 (Standard) Digital communications Computer networks Sound -- Recording and reproducing -- Digital techniques Computer sound processing
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4653 , http://hdl.handle.net/10962/d1006638
- Description: A number of companies have developed a variety of network approaches to the transfer of audio and MIDI data. By doing this, they have addressed the configuration complications that were present when using direct patching for analogue audio, digital audio, word clock, and control connections. Along with their approaches, controlling software, usually running on a PC, is used to set up and manage audio routings from the outputs to the inputs of devices. However one of the advantages of direct patching is the conceptual simplicity it provides for a user in connecting plugs of devices, the ability to connect from the host plug of one device to the host plug of another. The connection management or routing applications of the current audio networks do not allow for such a capability, and instead employ what is referred to as a two-step approach to connection management. This two-step approach requires that devices be first configured at the transport layer of the network for input and output routings, after which the transmit and receive plugs of devices are manually configured to transmit or receive data. From a user’s point of view, it is desirable for the connection management or audio routing applications of the current audio networks to be able to establish routings directly between the host plugs of devices, and not the audio channels exposed by a network’s transport, as is currently the case. The main goal of this work has been to retain the conceptual simplicity of point-to-point connection management within digital audio networks, while gaining all the benefits that digital audio networking can offer.
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How the internet supports the consumer decision process: the case study of McCarthy Call-a-Car
- Authors: Limbada, Suhayl
- Date: 2006
- Subjects: McCarthy Call-a Car , Automobile dealers -- South Africa , Automobile industry and trade , Internet marketing , Consumer behavior , Customer services , Consumer satisfaction
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1171 , http://hdl.handle.net/10962/d1002787 , McCarthy Call-a Car , Automobile dealers -- South Africa , Automobile industry and trade , Internet marketing , Consumer behavior , Customer services , Consumer satisfaction
- Description: This thesis aims to provide a better understanding of the ways in which the Internet supports the consumer decision process of potential customers in an online car retail environment. The thesis is mainly focused on how this can be done in South Africa. A case study approach was adopted in investigating the case of McCarthy Call-a-Car. Interviews were carried out with McCarthy Call-a-Car employees and documents and the Call-a-Car website, were analysed. It was revealed that Call-a-Car focuses on using the Internet to support customers in the pre-purchase phase only. The purchase and post-purchase phases are carried out offline at its dealership network and Club McCarthy respectively. The findings showed that Call-a-Car views the Internet as a marketing tool that provides convenience to customers searching for product information in the pre-purchase phase. The interviews revealed that due to Call-a-Car's strategy, as well as practical problems of selling online, the customer will still have to visit a dealership to conclude a purchase and for post-purchase support. From this research it appears that there are three main issues arising out of Call-a-Car's usage of the Internet in the customer buying process: firstly, the research revealed that instead of cutting out the middle-man, the Internet has created new types of intermediaries called "cybermediaries" and that Call-a-Car is one such intermediary. Secondly, it was revealed that trust is crucial in the online environment and that Call-a-Car builds trust through branding. Thirdly, the Internet has not affected prices online, despite theoretical estimations that the Internet would induce lower prices. The main recommendations for future research are empirical studies to investigate if the cybermediary model is unique to the car industry and whether this business model could be applied to other look and feel industries such as real estate. Future studies could also investigate the mechanics of trust-building and brand-building in the online environment and finally, studies from the customer perspective considering what Internet tools the customer would like to see online to support them during their buying decision process.
- Full Text:
- Authors: Limbada, Suhayl
- Date: 2006
- Subjects: McCarthy Call-a Car , Automobile dealers -- South Africa , Automobile industry and trade , Internet marketing , Consumer behavior , Customer services , Consumer satisfaction
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1171 , http://hdl.handle.net/10962/d1002787 , McCarthy Call-a Car , Automobile dealers -- South Africa , Automobile industry and trade , Internet marketing , Consumer behavior , Customer services , Consumer satisfaction
- Description: This thesis aims to provide a better understanding of the ways in which the Internet supports the consumer decision process of potential customers in an online car retail environment. The thesis is mainly focused on how this can be done in South Africa. A case study approach was adopted in investigating the case of McCarthy Call-a-Car. Interviews were carried out with McCarthy Call-a-Car employees and documents and the Call-a-Car website, were analysed. It was revealed that Call-a-Car focuses on using the Internet to support customers in the pre-purchase phase only. The purchase and post-purchase phases are carried out offline at its dealership network and Club McCarthy respectively. The findings showed that Call-a-Car views the Internet as a marketing tool that provides convenience to customers searching for product information in the pre-purchase phase. The interviews revealed that due to Call-a-Car's strategy, as well as practical problems of selling online, the customer will still have to visit a dealership to conclude a purchase and for post-purchase support. From this research it appears that there are three main issues arising out of Call-a-Car's usage of the Internet in the customer buying process: firstly, the research revealed that instead of cutting out the middle-man, the Internet has created new types of intermediaries called "cybermediaries" and that Call-a-Car is one such intermediary. Secondly, it was revealed that trust is crucial in the online environment and that Call-a-Car builds trust through branding. Thirdly, the Internet has not affected prices online, despite theoretical estimations that the Internet would induce lower prices. The main recommendations for future research are empirical studies to investigate if the cybermediary model is unique to the car industry and whether this business model could be applied to other look and feel industries such as real estate. Future studies could also investigate the mechanics of trust-building and brand-building in the online environment and finally, studies from the customer perspective considering what Internet tools the customer would like to see online to support them during their buying decision process.
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Ideology in editorials : a comparison of selected editorials in English-medium newspapers after September 11
- Authors: Lagonikos, Irene Theodosia
- Date: 2006
- Subjects: September 11 Terrorist Attacks, 2001 , Editorials , Terrorism in mass media
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2354 , http://hdl.handle.net/10962/d1002636 , September 11 Terrorist Attacks, 2001 , Editorials , Terrorism in mass media
- Description: September 11, 2001 presented the world with events that challenged its conception of reality and called into question current ideologies. In order to make sense of the attacks, people turned to the media for information and interpretation. My interest lies in the media’s role in shaping ideologies as a result of the events of September 11, 2001. I focus on the newspaper editorial because it, in particular, functions not only to report the news but also to interpret the news for the reader. My analysis is centred on the first reaction to the events in five ‘core’ editorials drawn, respectively, from an American, British, South African, Zimbabwean and Kenyan newspaper. The specific focus, in each case, is the representation and evaluation of social actors, the events themselves and the schematic structure of the editorial. I adopt a critical perspective through the use of Critical Discourse Analysis, supported by Systemic Functional Grammar and APPRAISAL. This perspective involves three inter-connected stages of analysis: a Description of the formal discourse properties of each editorial; an Interpretation of the prevailing situational context; and an Explanation of the sociohistorical context in each case. Language, being a form of social practice, is a means by which power relations in society are reproduced or contested (Janks 1997). By analysing the editorials’ discourse I identify whose interests are being served and how each text positions a reader’s attitudes and opinions. My analysis reveals the fact that the editorials distinguish between “us” and “them” groups for the purposes of advancing and confirming in-group ideologies and agendas. This is achieved in each case through comparing the paper’s ideology with the opposing ideology, which is presented as deviant and unsupportive of the in-group. My analysis of the African editorials, in particular, further reveals the exploitation of this division for the purposes of promoting and interpreting local political and social issues. Examination of the processes and conditions surrounding the production of the editorials shows how they are significantly influenced and constrained by the ideologies of both the writer and newspaper owner as well as by the situational context within which they were written. My analysis of the schematic structure of the editorials, in line with Bolivar (1994), reveals consistent use of three-part structures by which editorial opinions are evaluated. In concluding I provide suggestions, based on my research, for how critical language awareness can inform media education at high school level in South Africa. I argue that students should be equipped with tools, such as those I employed, to critically analyse and uncover how language is used to promote ideologies in the editorial of newspapers.
- Full Text:
- Authors: Lagonikos, Irene Theodosia
- Date: 2006
- Subjects: September 11 Terrorist Attacks, 2001 , Editorials , Terrorism in mass media
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2354 , http://hdl.handle.net/10962/d1002636 , September 11 Terrorist Attacks, 2001 , Editorials , Terrorism in mass media
- Description: September 11, 2001 presented the world with events that challenged its conception of reality and called into question current ideologies. In order to make sense of the attacks, people turned to the media for information and interpretation. My interest lies in the media’s role in shaping ideologies as a result of the events of September 11, 2001. I focus on the newspaper editorial because it, in particular, functions not only to report the news but also to interpret the news for the reader. My analysis is centred on the first reaction to the events in five ‘core’ editorials drawn, respectively, from an American, British, South African, Zimbabwean and Kenyan newspaper. The specific focus, in each case, is the representation and evaluation of social actors, the events themselves and the schematic structure of the editorial. I adopt a critical perspective through the use of Critical Discourse Analysis, supported by Systemic Functional Grammar and APPRAISAL. This perspective involves three inter-connected stages of analysis: a Description of the formal discourse properties of each editorial; an Interpretation of the prevailing situational context; and an Explanation of the sociohistorical context in each case. Language, being a form of social practice, is a means by which power relations in society are reproduced or contested (Janks 1997). By analysing the editorials’ discourse I identify whose interests are being served and how each text positions a reader’s attitudes and opinions. My analysis reveals the fact that the editorials distinguish between “us” and “them” groups for the purposes of advancing and confirming in-group ideologies and agendas. This is achieved in each case through comparing the paper’s ideology with the opposing ideology, which is presented as deviant and unsupportive of the in-group. My analysis of the African editorials, in particular, further reveals the exploitation of this division for the purposes of promoting and interpreting local political and social issues. Examination of the processes and conditions surrounding the production of the editorials shows how they are significantly influenced and constrained by the ideologies of both the writer and newspaper owner as well as by the situational context within which they were written. My analysis of the schematic structure of the editorials, in line with Bolivar (1994), reveals consistent use of three-part structures by which editorial opinions are evaluated. In concluding I provide suggestions, based on my research, for how critical language awareness can inform media education at high school level in South Africa. I argue that students should be equipped with tools, such as those I employed, to critically analyse and uncover how language is used to promote ideologies in the editorial of newspapers.
- Full Text:
Implementation of local agenda 21's education, awareness and training component: a case study of Gaborone
- Authors: Mogotsi, Barulaganye Jones
- Date: 2006
- Subjects: Environmental education -- Botswana -- Gabarone -- Case studies Environmental education -- Activity programs Environmental health -- Botswana -- Gabarone -- Case studies Sustainable development -- Botswana Environmental policy -- International cooperation Environmental protection -- Botswana
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1565 , http://hdl.handle.net/10962/d1003447
- Description: ‘What is required is the ‘politics of the rhizome’ in which everyone, every community, every nation and every major region comes to terms with the uniqueness of their situation and acts accordingly – and realises that it is only by vast numbers of people, of groups and organizations acting in accordance with possibilities of their situations, that the environmental crisis will be solved.’ (Gare, 1995:161). The study investigates the implementation of Local Agenda 21’s education, awareness and training component by the Gaborone City Council Environmental Health Department (GCCEHD) to address environmental challenges facing the city of Gaborone, the capital city of Botswana. The research was conducted as a qualitative case study that made use of semi-structured interviews, focus group interviews and document analysis as instruments of data generation. Samples of respondents were selected from the Gaborone City Council (GCCEHD) employees in management positions, workers, and elected political councillors. The study is contextualised through establishing environmental issues in the Gaborone City Council, identifying strategies to address environmental issues and the review of the Waste Management Plan 2003-2009, which the department uses as a guiding document for waste management. The study establishes that the council employees are mostly concerned with issues of waste management and need commitment from all Local Government sectors of the work force. The study established the importance of education, awareness and training as a response to environmental issues facing Gaborone. The study also establishes the need for social education in terms of public education, awareness and training needed for the public to adequately respond to environmental challenges in their context. Models and relevant policy and guiding documents such as the Vision for Greater Gaborone, DPSEEA Model and Botswana Environmental Planning Principles were identified and recommended for the department to consider. The awareness and training activities should be developed and involve the community in environmental management. This should enable the council to create opportunities for income generation, at the same time changing community negative attitudes towards the environment and improving service delivery by the department.
- Full Text:
- Authors: Mogotsi, Barulaganye Jones
- Date: 2006
- Subjects: Environmental education -- Botswana -- Gabarone -- Case studies Environmental education -- Activity programs Environmental health -- Botswana -- Gabarone -- Case studies Sustainable development -- Botswana Environmental policy -- International cooperation Environmental protection -- Botswana
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1565 , http://hdl.handle.net/10962/d1003447
- Description: ‘What is required is the ‘politics of the rhizome’ in which everyone, every community, every nation and every major region comes to terms with the uniqueness of their situation and acts accordingly – and realises that it is only by vast numbers of people, of groups and organizations acting in accordance with possibilities of their situations, that the environmental crisis will be solved.’ (Gare, 1995:161). The study investigates the implementation of Local Agenda 21’s education, awareness and training component by the Gaborone City Council Environmental Health Department (GCCEHD) to address environmental challenges facing the city of Gaborone, the capital city of Botswana. The research was conducted as a qualitative case study that made use of semi-structured interviews, focus group interviews and document analysis as instruments of data generation. Samples of respondents were selected from the Gaborone City Council (GCCEHD) employees in management positions, workers, and elected political councillors. The study is contextualised through establishing environmental issues in the Gaborone City Council, identifying strategies to address environmental issues and the review of the Waste Management Plan 2003-2009, which the department uses as a guiding document for waste management. The study establishes that the council employees are mostly concerned with issues of waste management and need commitment from all Local Government sectors of the work force. The study established the importance of education, awareness and training as a response to environmental issues facing Gaborone. The study also establishes the need for social education in terms of public education, awareness and training needed for the public to adequately respond to environmental challenges in their context. Models and relevant policy and guiding documents such as the Vision for Greater Gaborone, DPSEEA Model and Botswana Environmental Planning Principles were identified and recommended for the department to consider. The awareness and training activities should be developed and involve the community in environmental management. This should enable the council to create opportunities for income generation, at the same time changing community negative attitudes towards the environment and improving service delivery by the department.
- Full Text:
Implementing performance management at local government level in South Africa : a case study on the impact of organisational culture
- Authors: Williams, Quinton Walter
- Date: 2006
- Subjects: Buffalo City (South Africa) Local government -- South Africa Municipal government -- South Africa Performance -- Management -- South Africa Corporate culture -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:749 , http://hdl.handle.net/10962/d1003870
- Description: Local Government in South Africa has undergone much transformation since 2000. Although much of the change has been to correct imbalances, inequities and disparities within our local communities as a result of Apartheid, change has also been motivated by National Government’s realisation that, as with governments throughout the world, there is a need to modernise all spheres of Government. Part of this transformation process at a local government level in South Africa has been to ensure that municipalities become more responsive to the communities’ needs. The guiding principles for this transformation are contained in the White Paper on the Transformation of the Public Service (1995) and the Batho Pele White Paper (1997). This has informed the Municipal Systems Act: Act 32 of 2000 of which Chapter 6 determines that municipalities will have a performance management system to promote a culture of performance management amongst the political structures, political office bearers, councillors and administration. The performance management system must ensure that the municipality administers its affairs in an economical, effective, efficient and accountable manner. A literature review contained in this research, indicates that internationally, implementing performance management systems at a local government level is impact upon by a number of factors such as the organizational culture of an institution. This research, which has been grounded within a constructivist paradigm, describes the impact organizational culture has had on the implementation process of the performance management system at Buffalo City Municipality. Interviews were conducted amongst the Section 57 employees (i.e. the Directors) and those employees directly responsible for implementing performance management. The four Directors, two General Managers and the portfolio councilor were interviewed. Semi-structured interviews were conducted with the interviewees and this culminated in a total of 10 hours of interviewing. The protocols were analyzed using the guidelines suggested by Boyatzis (1998) and the findings are detailed in two chapters. The findings of the research were that the implementation of the performance management system at Buffalo City Municipality has been impacted on by the dichotomy between the political and administrative leadership, resulting in non-implementation of council resolutions, the lack of an organizational strategy, poor institutional arrangements and inadequate resource allocation, are reported. However, the most important finding was the impact that a culture of fear has had on the implementation process. This culture of fear and its impact on the implementation of performance management system is described as the most pervasive and insidious of all the findings to have negatively impacted on the implementation process. This research ends with recommendations for further research and it is argued that each organization has its own unique organizational culture. The conclusion is that no single typology, as contained in the literature, which can account for the specific impact organizational culture will have on the implementation process of a performance management system at local government level in South Africa. Consequently, implementers of performance management systems must assess the unique characteristics of each organization’s culture prior to implementation, in order to evaluate its impact that the organizational culture can have on the process.
- Full Text:
- Authors: Williams, Quinton Walter
- Date: 2006
- Subjects: Buffalo City (South Africa) Local government -- South Africa Municipal government -- South Africa Performance -- Management -- South Africa Corporate culture -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:749 , http://hdl.handle.net/10962/d1003870
- Description: Local Government in South Africa has undergone much transformation since 2000. Although much of the change has been to correct imbalances, inequities and disparities within our local communities as a result of Apartheid, change has also been motivated by National Government’s realisation that, as with governments throughout the world, there is a need to modernise all spheres of Government. Part of this transformation process at a local government level in South Africa has been to ensure that municipalities become more responsive to the communities’ needs. The guiding principles for this transformation are contained in the White Paper on the Transformation of the Public Service (1995) and the Batho Pele White Paper (1997). This has informed the Municipal Systems Act: Act 32 of 2000 of which Chapter 6 determines that municipalities will have a performance management system to promote a culture of performance management amongst the political structures, political office bearers, councillors and administration. The performance management system must ensure that the municipality administers its affairs in an economical, effective, efficient and accountable manner. A literature review contained in this research, indicates that internationally, implementing performance management systems at a local government level is impact upon by a number of factors such as the organizational culture of an institution. This research, which has been grounded within a constructivist paradigm, describes the impact organizational culture has had on the implementation process of the performance management system at Buffalo City Municipality. Interviews were conducted amongst the Section 57 employees (i.e. the Directors) and those employees directly responsible for implementing performance management. The four Directors, two General Managers and the portfolio councilor were interviewed. Semi-structured interviews were conducted with the interviewees and this culminated in a total of 10 hours of interviewing. The protocols were analyzed using the guidelines suggested by Boyatzis (1998) and the findings are detailed in two chapters. The findings of the research were that the implementation of the performance management system at Buffalo City Municipality has been impacted on by the dichotomy between the political and administrative leadership, resulting in non-implementation of council resolutions, the lack of an organizational strategy, poor institutional arrangements and inadequate resource allocation, are reported. However, the most important finding was the impact that a culture of fear has had on the implementation process. This culture of fear and its impact on the implementation of performance management system is described as the most pervasive and insidious of all the findings to have negatively impacted on the implementation process. This research ends with recommendations for further research and it is argued that each organization has its own unique organizational culture. The conclusion is that no single typology, as contained in the literature, which can account for the specific impact organizational culture will have on the implementation process of a performance management system at local government level in South Africa. Consequently, implementers of performance management systems must assess the unique characteristics of each organization’s culture prior to implementation, in order to evaluate its impact that the organizational culture can have on the process.
- Full Text:
Intellectual achievement in pursuit of true belief
- Authors: Shapiro, Lucy Deborah
- Date: 2006 , 2013-06-14
- Subjects: Delusions , Knowledge, Theory of , Epistemics , Truth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2735 , http://hdl.handle.net/10962/d1005955 , Delusions , Knowledge, Theory of , Epistemics , Truth
- Description: The practice of inquiry, in which we seek and pursue true beliefs by forming justified beliefs, is important to us. This thesis will address two questions concerning the significance of this practice. These are the question of what explains our preference for this particular belief-forming practice, and whether this value can be explained by the value of true belief alone. To answer these questions I will examme a variety of our intuitive commitments to particular values, assuming their general accuracy. I will use an inference from the goal of a practice to the value of a practice, an inference based on the assumption that when we pursue something it is valuable. I will discuss our intuitive commitments to the value of justification. I will also rely on the implications of the presence of pride and admiration in relation to the outcome of an inquiry (especially in situations where a belief is difficult to form). By using this methodology, I will argue for three sources of value that explain the unique significance of the value of inquiry. The first is the value of its unique role in our being able to form reliably true beliefs. Second, I will argue for Wayne D. Riggs' account of epistemic credit; Riggs defends the value of our being responsible for true beliefs, they are our achievements. Third, I will argue for an additional the value of delivering a skilful epistemic performance, another kind of achievement. I will show that although the value of true belief plays a role in explaining some of the values, the third value for inquiry is independent of the value of true belief. This means that there are intellectual rewards, which can be gained from this practice, that extend beyond the value of true belief. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Authors: Shapiro, Lucy Deborah
- Date: 2006 , 2013-06-14
- Subjects: Delusions , Knowledge, Theory of , Epistemics , Truth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2735 , http://hdl.handle.net/10962/d1005955 , Delusions , Knowledge, Theory of , Epistemics , Truth
- Description: The practice of inquiry, in which we seek and pursue true beliefs by forming justified beliefs, is important to us. This thesis will address two questions concerning the significance of this practice. These are the question of what explains our preference for this particular belief-forming practice, and whether this value can be explained by the value of true belief alone. To answer these questions I will examme a variety of our intuitive commitments to particular values, assuming their general accuracy. I will use an inference from the goal of a practice to the value of a practice, an inference based on the assumption that when we pursue something it is valuable. I will discuss our intuitive commitments to the value of justification. I will also rely on the implications of the presence of pride and admiration in relation to the outcome of an inquiry (especially in situations where a belief is difficult to form). By using this methodology, I will argue for three sources of value that explain the unique significance of the value of inquiry. The first is the value of its unique role in our being able to form reliably true beliefs. Second, I will argue for Wayne D. Riggs' account of epistemic credit; Riggs defends the value of our being responsible for true beliefs, they are our achievements. Third, I will argue for an additional the value of delivering a skilful epistemic performance, another kind of achievement. I will show that although the value of true belief plays a role in explaining some of the values, the third value for inquiry is independent of the value of true belief. This means that there are intellectual rewards, which can be gained from this practice, that extend beyond the value of true belief. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
Intersubjectivity and the schizophrenic experience: a hermeneutic phenomoneological exploration of being-in-relation
- Bradfield, Bruce Christopher
- Authors: Bradfield, Bruce Christopher
- Date: 2006
- Subjects: Schizophrenia , Intersubjectivity
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2940 , http://hdl.handle.net/10962/d1002449 , Schizophrenia , Intersubjectivity
- Description: This research project has its origin and motivation in work done by Lysaker, Johannesen and Lysaker (2005), which explored the experience of being as a person with schizophrenia in relation to other individuals. The researchers examined the nature of the schizophrenic experience from within the framework of the dialogical model of self, and presented schizophrenic intersubjectivity as a potentially horrifying and disintegrating experience. Lysaker et al (2005) discuss the notion that the individual self unfolds as a composite structure of multiple selves, existing in dialogical interaction with one another. Their research aimed to show that the individual with schizophrenia experiences difficulty tolerating this dialogue on an intrapsychic level. Because interpersonal exchange requires that individuals adopt a variety of self-other modes of relatedness, suggest Lysaker et al, interpersonal engagement for the person with schizophrenia is disclosed as profoundly threatening (ibid.) Moving from the above-mentioned research, this project aims through a hermeneutic phenomenological process to clarify and narrate the subtleties of the intersubjective experience, as that experience is disclosed in the lived world of a person with schizophrenia. How does such an individual experience self in relation to other? How does such an individual negotiate their sense of self in terms of their dialogicality? The phenomenological hermeneutic method, as shaped by such theorists as Gadamer (1976), Heidegger (1962) and Buber (1970), will emerge as the interpretive platform upon which these questions are approached.
- Full Text:
- Authors: Bradfield, Bruce Christopher
- Date: 2006
- Subjects: Schizophrenia , Intersubjectivity
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2940 , http://hdl.handle.net/10962/d1002449 , Schizophrenia , Intersubjectivity
- Description: This research project has its origin and motivation in work done by Lysaker, Johannesen and Lysaker (2005), which explored the experience of being as a person with schizophrenia in relation to other individuals. The researchers examined the nature of the schizophrenic experience from within the framework of the dialogical model of self, and presented schizophrenic intersubjectivity as a potentially horrifying and disintegrating experience. Lysaker et al (2005) discuss the notion that the individual self unfolds as a composite structure of multiple selves, existing in dialogical interaction with one another. Their research aimed to show that the individual with schizophrenia experiences difficulty tolerating this dialogue on an intrapsychic level. Because interpersonal exchange requires that individuals adopt a variety of self-other modes of relatedness, suggest Lysaker et al, interpersonal engagement for the person with schizophrenia is disclosed as profoundly threatening (ibid.) Moving from the above-mentioned research, this project aims through a hermeneutic phenomenological process to clarify and narrate the subtleties of the intersubjective experience, as that experience is disclosed in the lived world of a person with schizophrenia. How does such an individual experience self in relation to other? How does such an individual negotiate their sense of self in terms of their dialogicality? The phenomenological hermeneutic method, as shaped by such theorists as Gadamer (1976), Heidegger (1962) and Buber (1970), will emerge as the interpretive platform upon which these questions are approached.
- Full Text:
Investigating a rural community's use of communication technology: a study of Nakaseke Community Multi-media centre in Uganda
- Authors: Tumusiime, James
- Date: 2006
- Subjects: Information technology -- Uganda , Media programs (Education) -- Uganda , Communication in rural development -- Uganda , Communication -- Technological innovations -- Developing countries , Telecommuting centres -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3489 , http://hdl.handle.net/10962/d1002944 , Information technology -- Uganda , Media programs (Education) -- Uganda , Communication in rural development -- Uganda , Communication -- Technological innovations -- Developing countries , Telecommuting centres -- Uganda
- Description: An assumption that Information and Communication Technologies (ICTs) and economic development have an automatic linkage has gained wide acceptance over the last decade. As a result, developing countries are under pressure to apply this prescription as a solution to poverty. With the help of development partners in the developed world and the United Nations, developing countries have embraced this call to increase access to ICTs to bridge the ever-widening gap between the ‘information rich’ and ‘information poor’ (Castells, 2001). One of the strategies has been the establishment of telecentres where the least privileged people might access ICTs for their own development needs. However, this strategy has tended to overlook contextual factors and circumstances in developing countries. ICTs are thus being introduced in an environment of mass poverty, illiteracy and poor infrastructure, exacerbating existing inequalities in some cases. Much attention has been focussed on initiatives aimed at expanding the ICT infrastructure for wider population access without addressing what the users actually do with such access. This study aims to make a contribution in that direction. The study focuses on Nakaseke Community Multi-media Centre(CMC), the first telecentre introduced in Uganda in 1997. Using a combination of quantitative and qualitative research techniques, the study sets out to develop deeper insights into how the Nakaseke community uses, engages with and relates with communication technologies installed at the telecentre. It probes whether these practices advance the dominant view that ICTs are a panacea for rural development. The findings indicate that while access to communication technology has expanded, albeit at a slow pace, the benefits might take very long to have a significant effect as many targeted users do not make use of the facilities because they lack the human skills and financial resources to exploit the technologies. Other problems such as poor electricity supply and sustainability also actively militate against the potential of the project to deliver. Besides, people tend to appropriate technology in ways different from those intended by its promoters. As Burton (2002) explains through the concept of ‘affordances’ and ‘culture’, some users perceive technologies essentially as something that bestows the status of being modern or sophisticated on their community, rather than as a development tool. In conclusion, it is argued that if used for development, ICTs can indeed make a difference in the lives of rural people. However, besides investing in technology, there is need to invest more in empowering the people themselves with skills, particularly literacy, to enable them use ICTs productively.
- Full Text:
- Authors: Tumusiime, James
- Date: 2006
- Subjects: Information technology -- Uganda , Media programs (Education) -- Uganda , Communication in rural development -- Uganda , Communication -- Technological innovations -- Developing countries , Telecommuting centres -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3489 , http://hdl.handle.net/10962/d1002944 , Information technology -- Uganda , Media programs (Education) -- Uganda , Communication in rural development -- Uganda , Communication -- Technological innovations -- Developing countries , Telecommuting centres -- Uganda
- Description: An assumption that Information and Communication Technologies (ICTs) and economic development have an automatic linkage has gained wide acceptance over the last decade. As a result, developing countries are under pressure to apply this prescription as a solution to poverty. With the help of development partners in the developed world and the United Nations, developing countries have embraced this call to increase access to ICTs to bridge the ever-widening gap between the ‘information rich’ and ‘information poor’ (Castells, 2001). One of the strategies has been the establishment of telecentres where the least privileged people might access ICTs for their own development needs. However, this strategy has tended to overlook contextual factors and circumstances in developing countries. ICTs are thus being introduced in an environment of mass poverty, illiteracy and poor infrastructure, exacerbating existing inequalities in some cases. Much attention has been focussed on initiatives aimed at expanding the ICT infrastructure for wider population access without addressing what the users actually do with such access. This study aims to make a contribution in that direction. The study focuses on Nakaseke Community Multi-media Centre(CMC), the first telecentre introduced in Uganda in 1997. Using a combination of quantitative and qualitative research techniques, the study sets out to develop deeper insights into how the Nakaseke community uses, engages with and relates with communication technologies installed at the telecentre. It probes whether these practices advance the dominant view that ICTs are a panacea for rural development. The findings indicate that while access to communication technology has expanded, albeit at a slow pace, the benefits might take very long to have a significant effect as many targeted users do not make use of the facilities because they lack the human skills and financial resources to exploit the technologies. Other problems such as poor electricity supply and sustainability also actively militate against the potential of the project to deliver. Besides, people tend to appropriate technology in ways different from those intended by its promoters. As Burton (2002) explains through the concept of ‘affordances’ and ‘culture’, some users perceive technologies essentially as something that bestows the status of being modern or sophisticated on their community, rather than as a development tool. In conclusion, it is argued that if used for development, ICTs can indeed make a difference in the lives of rural people. However, besides investing in technology, there is need to invest more in empowering the people themselves with skills, particularly literacy, to enable them use ICTs productively.
- Full Text:
Investigating the effects of the proliferation of commercial broadcasting on public service broadcasting: the case of Rivers State of Nigeria Broadcasting Corporation
- Authors: Da-Wariboko, Biobele
- Date: 2006
- Subjects: Nigerian Broadcasting Corporation , Broadcasting -- Social aspects -- Nigeria , Mass media -- Social aspects -- Nigeria , Radio Broadcasting -- Social aspects -- Nigeria , Radio in community development , Radio stations -- Nigeria , Radio broadcasting -- Rivers State (Nigeria) -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3423 , http://hdl.handle.net/10962/d1002876 , Nigerian Broadcasting Corporation , Broadcasting -- Social aspects -- Nigeria , Mass media -- Social aspects -- Nigeria , Radio Broadcasting -- Social aspects -- Nigeria , Radio in community development , Radio stations -- Nigeria , Radio broadcasting -- Rivers State (Nigeria) -- History
- Description: 1992 marked a turning point in Nigeria’s broadcasting history as the country formally deregulated her broadcast space. However, it was not until March 2002 that the first commercial radio station was established in Rivers State, a broadcast environment hitherto monopolised by Radio Rivers. The coming of the first independent radio station in Rivers State in March 2002 was followed by the establishment of two other stations in October 2003 and November 2003 respectively. As important as these events in broadcasting in Rivers State are, however, media scholars have argued that in most societies where such change has taken place, public service broadcasters have tampered with their values of being an open space where individuals and groups can come together to be educated, informed, and entertained. This study investigates the extent to which the proliferation of commercial broadcasting outlets has affected Radio Rivers’ public service programming and scheduling. Using a combination of qualitative and quantitative research methods, through in-depth interviews and analysis of the mandate and programme schedules, the study established that while Radio Rivers still maintains some public service values, its current programming policy is driven by the need to compete with the commercial broadcasters. This is evidenced in the decrease in the programme space allocated to current affairs and educational programmes on the schedule, (the genre of public service broadcasting), and the increase in attention to advertisements and entertainment programmes, (the genre of commercial broadcasting). The study also confirms the adverse effects of dwindling financial resources as forcing public service radios to compromise on their public service values, as majority of programmes on Radio Rivers current programme schedules are now geared towards attracting advertisers rather than serving the public good and interests. However, the study proved that it is not in all cases that the entry of commercial broadcasters into Rivers State broadcast space has undermined Radio Rivers public service values. Indeed, in leading to the expansion of interactive, news, and the diversification of entertainment programmes spaces on Radio Rivers’ programming schedules, the proliferation of commercial broadcasters has yielded some positive effects on Radio Rivers public service values and contribution to the public sphere. The study further highlights the need for some policy reforms at Radio Rivers, such as the introduction of licence fees, increased government funding and loosening government’s current control over the station. In addition, there is the need for the edict establishing the station to be amended to reflect the current trends in broadcasting in Rivers State, and above all to reposition Radio Rivers to sustain public good and public interests in its programming.
- Full Text:
- Authors: Da-Wariboko, Biobele
- Date: 2006
- Subjects: Nigerian Broadcasting Corporation , Broadcasting -- Social aspects -- Nigeria , Mass media -- Social aspects -- Nigeria , Radio Broadcasting -- Social aspects -- Nigeria , Radio in community development , Radio stations -- Nigeria , Radio broadcasting -- Rivers State (Nigeria) -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3423 , http://hdl.handle.net/10962/d1002876 , Nigerian Broadcasting Corporation , Broadcasting -- Social aspects -- Nigeria , Mass media -- Social aspects -- Nigeria , Radio Broadcasting -- Social aspects -- Nigeria , Radio in community development , Radio stations -- Nigeria , Radio broadcasting -- Rivers State (Nigeria) -- History
- Description: 1992 marked a turning point in Nigeria’s broadcasting history as the country formally deregulated her broadcast space. However, it was not until March 2002 that the first commercial radio station was established in Rivers State, a broadcast environment hitherto monopolised by Radio Rivers. The coming of the first independent radio station in Rivers State in March 2002 was followed by the establishment of two other stations in October 2003 and November 2003 respectively. As important as these events in broadcasting in Rivers State are, however, media scholars have argued that in most societies where such change has taken place, public service broadcasters have tampered with their values of being an open space where individuals and groups can come together to be educated, informed, and entertained. This study investigates the extent to which the proliferation of commercial broadcasting outlets has affected Radio Rivers’ public service programming and scheduling. Using a combination of qualitative and quantitative research methods, through in-depth interviews and analysis of the mandate and programme schedules, the study established that while Radio Rivers still maintains some public service values, its current programming policy is driven by the need to compete with the commercial broadcasters. This is evidenced in the decrease in the programme space allocated to current affairs and educational programmes on the schedule, (the genre of public service broadcasting), and the increase in attention to advertisements and entertainment programmes, (the genre of commercial broadcasting). The study also confirms the adverse effects of dwindling financial resources as forcing public service radios to compromise on their public service values, as majority of programmes on Radio Rivers current programme schedules are now geared towards attracting advertisers rather than serving the public good and interests. However, the study proved that it is not in all cases that the entry of commercial broadcasters into Rivers State broadcast space has undermined Radio Rivers public service values. Indeed, in leading to the expansion of interactive, news, and the diversification of entertainment programmes spaces on Radio Rivers’ programming schedules, the proliferation of commercial broadcasters has yielded some positive effects on Radio Rivers public service values and contribution to the public sphere. The study further highlights the need for some policy reforms at Radio Rivers, such as the introduction of licence fees, increased government funding and loosening government’s current control over the station. In addition, there is the need for the edict establishing the station to be amended to reflect the current trends in broadcasting in Rivers State, and above all to reposition Radio Rivers to sustain public good and public interests in its programming.
- Full Text:
Investigating the viability of a framework for small scale, easily deployable and extensible hotspot management systems
- Authors: Thinyane, Mamello P
- Date: 2006
- Subjects: Local area networks (Computer networks) , Computer networks -- Management , Computer network architectures , Computer network protocols , Wireless communication systems , XML (Document markup language)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4638 , http://hdl.handle.net/10962/d1006553
- Description: The proliferation of PALs (Public Access Locations) is fuelling the development of new standards, protocols, services, and applications for WLANs (Wireless Local Area Networks). PALs are set up at public locations to meet continually changing, multiservice, multi-protocol user requirements. This research investigates the essential infrastructural requirements that will enable further proliferation of PALs, and consequently facilitate ubiquitous computing. Based on these requirements, an extensible architectural framework for PAL management systems that inherently facilitates the provisioning of multiple services and multiple protocols on PALs is derived. The ensuing framework, which is called Xobogel, is based on the microkernel architectural pattern, and the IPDR (Internet Protocol Data Record) specification. Xobogel takes into consideration and supports the implementation of diverse business models for PALs, in respect of distinct environmental factors. It also facilitates next-generation network service usage accounting through a simple, flexible, and extensible XML based usage record. The framework is subsequently validated for service element extensibility and simplicity through the design, implementation, and experimental deployment of SEHS (Small Extensible Hotspot System), a system based on the framework. The robustness and scalability of the framework is observed to be sufficient for SMME deployment, withstanding the stress testing experiments performed on SEHS. The range of service element and charging modules implemented confirm an acceptable level of flexibility and extensibility within the framework.
- Full Text:
- Authors: Thinyane, Mamello P
- Date: 2006
- Subjects: Local area networks (Computer networks) , Computer networks -- Management , Computer network architectures , Computer network protocols , Wireless communication systems , XML (Document markup language)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4638 , http://hdl.handle.net/10962/d1006553
- Description: The proliferation of PALs (Public Access Locations) is fuelling the development of new standards, protocols, services, and applications for WLANs (Wireless Local Area Networks). PALs are set up at public locations to meet continually changing, multiservice, multi-protocol user requirements. This research investigates the essential infrastructural requirements that will enable further proliferation of PALs, and consequently facilitate ubiquitous computing. Based on these requirements, an extensible architectural framework for PAL management systems that inherently facilitates the provisioning of multiple services and multiple protocols on PALs is derived. The ensuing framework, which is called Xobogel, is based on the microkernel architectural pattern, and the IPDR (Internet Protocol Data Record) specification. Xobogel takes into consideration and supports the implementation of diverse business models for PALs, in respect of distinct environmental factors. It also facilitates next-generation network service usage accounting through a simple, flexible, and extensible XML based usage record. The framework is subsequently validated for service element extensibility and simplicity through the design, implementation, and experimental deployment of SEHS (Small Extensible Hotspot System), a system based on the framework. The robustness and scalability of the framework is observed to be sufficient for SMME deployment, withstanding the stress testing experiments performed on SEHS. The range of service element and charging modules implemented confirm an acceptable level of flexibility and extensibility within the framework.
- Full Text:
Ionospheric total electron content variability and its influence in radio astronomy
- Authors: Botai, Ondego Joel
- Date: 2006
- Subjects: Electrons , Global Positioning System , Global Positioning System -- Data processing , Ionosphere , Ionospheric radio wave propagation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5473 , http://hdl.handle.net/10962/d1005258 , Electrons , Global Positioning System , Global Positioning System -- Data processing , Ionosphere , Ionospheric radio wave propagation
- Description: Ionospheric phase delays of radio signals from Global Positioning System (GPS) satellites have been used to compute ionospheric Total Electron Content (TEC). An extended Chapman profle model is used to estimate the electron density profles and TEC. The Chapman profle that can be used to predict TEC over the mid-latitudes only applies during day time. To model night time TEC variability, a polynomial function is fitted to the night time peak electron density profles derived from the online International Reference Ionosphere (IRI) 2001. The observed and predicted TEC and its variability have been used to study ionospheric in°uence on Radio Astronomy in South Africa region. Di®erential phase delays of the radio signals from Radio Astronomy sources have been simulated using TEC. Using the simulated phase delays, the azimuth and declination o®sets of the radio sources have been estimated. Results indicate that, pointing errors of the order of miliarcseconds (mas) are likely if the ionospheric phase delays are not corrected for. These delays are not uniform and vary over a broad spectrum of timescales. This implies that fast frequency (referencing) switching, closure phases and fringe ¯tting schemes for ionospheric correction in astrometry are not the best option as they do not capture the real state of the ionosphere especially if the switching time is greater than the ionospheric TEC variability. However, advantage can be taken of the GPS satellite data available at intervals of a second from the GPS receiver network in South Africa to derive parameters which could be used to correct for the ionospheric delays. Furthermore GPS data can also be used to monitor the occurrence of scintillations, (which might corrupt radio signals) especially for the proposed, Square Kilometer Array (SKA) stations closer to the equatorial belt during magnetic storms and sub-storms. A 10 minute snapshot of GPS data recorded with the Hermanus [34:420 S, 19:220 E ] dual frequency receiver on 2003-04-11 did not show the occurrence of scintillations. This time scale is however too short and cannot be representative. Longer time scales; hours, days, seasons are needed to monitor the occurrence of scintillations.
- Full Text:
- Authors: Botai, Ondego Joel
- Date: 2006
- Subjects: Electrons , Global Positioning System , Global Positioning System -- Data processing , Ionosphere , Ionospheric radio wave propagation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5473 , http://hdl.handle.net/10962/d1005258 , Electrons , Global Positioning System , Global Positioning System -- Data processing , Ionosphere , Ionospheric radio wave propagation
- Description: Ionospheric phase delays of radio signals from Global Positioning System (GPS) satellites have been used to compute ionospheric Total Electron Content (TEC). An extended Chapman profle model is used to estimate the electron density profles and TEC. The Chapman profle that can be used to predict TEC over the mid-latitudes only applies during day time. To model night time TEC variability, a polynomial function is fitted to the night time peak electron density profles derived from the online International Reference Ionosphere (IRI) 2001. The observed and predicted TEC and its variability have been used to study ionospheric in°uence on Radio Astronomy in South Africa region. Di®erential phase delays of the radio signals from Radio Astronomy sources have been simulated using TEC. Using the simulated phase delays, the azimuth and declination o®sets of the radio sources have been estimated. Results indicate that, pointing errors of the order of miliarcseconds (mas) are likely if the ionospheric phase delays are not corrected for. These delays are not uniform and vary over a broad spectrum of timescales. This implies that fast frequency (referencing) switching, closure phases and fringe ¯tting schemes for ionospheric correction in astrometry are not the best option as they do not capture the real state of the ionosphere especially if the switching time is greater than the ionospheric TEC variability. However, advantage can be taken of the GPS satellite data available at intervals of a second from the GPS receiver network in South Africa to derive parameters which could be used to correct for the ionospheric delays. Furthermore GPS data can also be used to monitor the occurrence of scintillations, (which might corrupt radio signals) especially for the proposed, Square Kilometer Array (SKA) stations closer to the equatorial belt during magnetic storms and sub-storms. A 10 minute snapshot of GPS data recorded with the Hermanus [34:420 S, 19:220 E ] dual frequency receiver on 2003-04-11 did not show the occurrence of scintillations. This time scale is however too short and cannot be representative. Longer time scales; hours, days, seasons are needed to monitor the occurrence of scintillations.
- Full Text:
Is land tenure a significant variable for promoting agricultural productivity in rural villages?: the case study of Nonkcampa Village in the Buffalo City Municipality, Province of the Eastern Cape, South Africa
- Authors: Gqokoma, Daniel Atwell
- Date: 2006
- Subjects: Buffalo City (South Africa) , Local government -- South Africa -- Eastern Cape , Municipal government -- South Africa -- Eastern Cape , Land tenure -- South Africa -- Eastern Cape , Land reform -- South Africa -- Eastern Cape , Land use -- Government policy -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3313 , http://hdl.handle.net/10962/d1003101 , Buffalo City (South Africa) , Local government -- South Africa -- Eastern Cape , Municipal government -- South Africa -- Eastern Cape , Land tenure -- South Africa -- Eastern Cape , Land reform -- South Africa -- Eastern Cape , Land use -- Government policy -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape
- Description: The research explored the causal relationship between the communal land tenure and the stagnant agricultural productivity in rural villages. It is assumed that there is covariance between the communal land tenure and the stagnant agricultural productivity. The communal land tenure deprived the villagers of the land ownership rights to mortgage their landholdings to secure agricultural credit from financial institutions, or to advance them as own contributions to obtain Government-provided grants under the ILRAD. Under such circumstances, the villagers could not raise the level of agricultural productivity. The Permit to Occupy (PTO) certificates, issued to the landholders, provided for usufruct rights only i.e. right to occupy and use an allotment. The related research was conducted at Nonkcampa village. The metatheory, “Positivism” and the quantitative paradigm were applied to collate and analyse the data. The research findings confirmed the correlation between the land tenure and the agricultural productivity, as the respondents claimed not to have had any access to agricultural inputs. Hence, the agricultural productivity on the arable land had stagnated.
- Full Text:
- Authors: Gqokoma, Daniel Atwell
- Date: 2006
- Subjects: Buffalo City (South Africa) , Local government -- South Africa -- Eastern Cape , Municipal government -- South Africa -- Eastern Cape , Land tenure -- South Africa -- Eastern Cape , Land reform -- South Africa -- Eastern Cape , Land use -- Government policy -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3313 , http://hdl.handle.net/10962/d1003101 , Buffalo City (South Africa) , Local government -- South Africa -- Eastern Cape , Municipal government -- South Africa -- Eastern Cape , Land tenure -- South Africa -- Eastern Cape , Land reform -- South Africa -- Eastern Cape , Land use -- Government policy -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape
- Description: The research explored the causal relationship between the communal land tenure and the stagnant agricultural productivity in rural villages. It is assumed that there is covariance between the communal land tenure and the stagnant agricultural productivity. The communal land tenure deprived the villagers of the land ownership rights to mortgage their landholdings to secure agricultural credit from financial institutions, or to advance them as own contributions to obtain Government-provided grants under the ILRAD. Under such circumstances, the villagers could not raise the level of agricultural productivity. The Permit to Occupy (PTO) certificates, issued to the landholders, provided for usufruct rights only i.e. right to occupy and use an allotment. The related research was conducted at Nonkcampa village. The metatheory, “Positivism” and the quantitative paradigm were applied to collate and analyse the data. The research findings confirmed the correlation between the land tenure and the agricultural productivity, as the respondents claimed not to have had any access to agricultural inputs. Hence, the agricultural productivity on the arable land had stagnated.
- Full Text:
Isolation, purification and characterization of a novel glucose oxidase from Penicillium canescens Tt42
- Authors: Simpson, Clinton
- Date: 2006
- Subjects: Penicillium , Glucose , Oxidases
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3975 , http://hdl.handle.net/10962/d1004034 , Penicillium , Glucose , Oxidases
- Description: A novel glucose oxidase from Penicillium canescens (Tt42) was isolated, purified and characterised. The P. canescens Tt42 was cultivated using an optimised growth medium from literature, and maximum glucose oxidase activities of 11.5 U/ml and 6.9 U/ml for the intra- and extracellular fractions were obtained. Maximum glucose oxidase production was achieved after 72 hours at 28°C which coincided with glucose depletion. A total of 1104 U (from 60ml) of glucose oxidase was produced with a biomass specific glucose oxidase activity of 1.08 Umg[superscript -1] Four methods of cell disruption were evaluated for release of intracellular glucose oxidase from P. canescens Tt42 cells. These methods were; sonication, French press, Freeze-Thaw and a high pressure cell disrupter (Z-Plus Series) from Constant systems. All the methods were successful in releasing the intracellular glucose oxidase from P. canescens Tt42. The use of the Constant Systems high pressure cell disrupter was preferred, since it was the simplest and most rapid method. Ammonium sulphate precipitation was shown to be effective as an initial purification step for extracellular glucose oxidase from P. canescens Tt42. Comparison of the intra- and extracellular glucose oxidase fractions using isoelectric focusing showed 2 isoenzymes in both fractions. The pI values of the isoenzymes were determined to be 4.30 and 4.67, with the former being dominant. Since both the intra- and extracellular fractions contained the same isoenzymes of glucose oxidase, further purification studies were performed using the extracellular fraction. The glucose oxidase from P. canescens Tt42 was purified using 3 main techniques: ammonium sulphate precipitation (60% - 70% cut), anion exchange chromatography (Super Q 650M) and size exclusion chromatography (Sephadex S200HR). The glucose oxidase was determined to be ±80% pure by size exclusion chromatography. The final purified glucose oxidase was lyophilised, and an overall purification yield of 10.3% was achieved with an 8.6-fold purification. The purified glucose oxidase was confirmed to be catalase free. Glucose oxidase from P. canescens Tt42 was determined to be a dimeric protein (M[subscript r] ±148kDa) likely consisting of 2 equal subunits (M[subscript r] ± 70kDa). The temperature optimum range was shown to be 25-30°C. The optimum pH for the oxidation of β-D-glucose was pH 7. The enzyme was shown to be stable at 25°C for 10 hours, with a half life of approximately 30 minutes at 37°C. The lyophilised enzyme was stable at -20°C for 6 months. The properties of glucose oxidase from Tt42 were comparable to alternative glucose oxidase enzymes from Aspergillus and other Penicillium species. Glucose oxidase from P. canescens Tt42 was shown to have distinct kinetic characteristics. The V[subscript max] and K[subscript m] were shown to be 651 Umg[superscript -1] and 18.4 mM towards β-D-glucose. The catalytic kcat and specificity k[subscript cat]/K[subscript m] constants for glucose oxidase from P. canescens Tt42 were shown to be 791 s[superscript -1] and 40 s[superscript -1]mM[superscript -1] each respectively. The specificity constant (k[subscript cat]/K[subscript m]) of glucose oxidase from P. canescens Tt42 was determined to be 1.3-fold higher than that that of A. niger (Sigma Type VII) and 8.7-fold lower than that of P. amagasakiense (ATCC 28686) from literature.
- Full Text:
- Authors: Simpson, Clinton
- Date: 2006
- Subjects: Penicillium , Glucose , Oxidases
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3975 , http://hdl.handle.net/10962/d1004034 , Penicillium , Glucose , Oxidases
- Description: A novel glucose oxidase from Penicillium canescens (Tt42) was isolated, purified and characterised. The P. canescens Tt42 was cultivated using an optimised growth medium from literature, and maximum glucose oxidase activities of 11.5 U/ml and 6.9 U/ml for the intra- and extracellular fractions were obtained. Maximum glucose oxidase production was achieved after 72 hours at 28°C which coincided with glucose depletion. A total of 1104 U (from 60ml) of glucose oxidase was produced with a biomass specific glucose oxidase activity of 1.08 Umg[superscript -1] Four methods of cell disruption were evaluated for release of intracellular glucose oxidase from P. canescens Tt42 cells. These methods were; sonication, French press, Freeze-Thaw and a high pressure cell disrupter (Z-Plus Series) from Constant systems. All the methods were successful in releasing the intracellular glucose oxidase from P. canescens Tt42. The use of the Constant Systems high pressure cell disrupter was preferred, since it was the simplest and most rapid method. Ammonium sulphate precipitation was shown to be effective as an initial purification step for extracellular glucose oxidase from P. canescens Tt42. Comparison of the intra- and extracellular glucose oxidase fractions using isoelectric focusing showed 2 isoenzymes in both fractions. The pI values of the isoenzymes were determined to be 4.30 and 4.67, with the former being dominant. Since both the intra- and extracellular fractions contained the same isoenzymes of glucose oxidase, further purification studies were performed using the extracellular fraction. The glucose oxidase from P. canescens Tt42 was purified using 3 main techniques: ammonium sulphate precipitation (60% - 70% cut), anion exchange chromatography (Super Q 650M) and size exclusion chromatography (Sephadex S200HR). The glucose oxidase was determined to be ±80% pure by size exclusion chromatography. The final purified glucose oxidase was lyophilised, and an overall purification yield of 10.3% was achieved with an 8.6-fold purification. The purified glucose oxidase was confirmed to be catalase free. Glucose oxidase from P. canescens Tt42 was determined to be a dimeric protein (M[subscript r] ±148kDa) likely consisting of 2 equal subunits (M[subscript r] ± 70kDa). The temperature optimum range was shown to be 25-30°C. The optimum pH for the oxidation of β-D-glucose was pH 7. The enzyme was shown to be stable at 25°C for 10 hours, with a half life of approximately 30 minutes at 37°C. The lyophilised enzyme was stable at -20°C for 6 months. The properties of glucose oxidase from Tt42 were comparable to alternative glucose oxidase enzymes from Aspergillus and other Penicillium species. Glucose oxidase from P. canescens Tt42 was shown to have distinct kinetic characteristics. The V[subscript max] and K[subscript m] were shown to be 651 Umg[superscript -1] and 18.4 mM towards β-D-glucose. The catalytic kcat and specificity k[subscript cat]/K[subscript m] constants for glucose oxidase from P. canescens Tt42 were shown to be 791 s[superscript -1] and 40 s[superscript -1]mM[superscript -1] each respectively. The specificity constant (k[subscript cat]/K[subscript m]) of glucose oxidase from P. canescens Tt42 was determined to be 1.3-fold higher than that that of A. niger (Sigma Type VII) and 8.7-fold lower than that of P. amagasakiense (ATCC 28686) from literature.
- Full Text:
Laboratory and field host utilization by established biological control agents of Lantana camara L. in South Africa
- Authors: Heystek, Fritz
- Date: 2006
- Subjects: Lantana camara -- South Africa , Biological pest control agents -- South Africa , Weeds -- Biological control -- South Africa , Invasive plants -- Biological control -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5725 , http://hdl.handle.net/10962/d1005411 , Lantana camara -- South Africa , Biological pest control agents -- South Africa , Weeds -- Biological control -- South Africa , Invasive plants -- Biological control -- South Africa
- Description: Varieties of Lantana camara (lantana) have been introduced into many countries of the world as ornamental plants and have become invasive weeds in many countries including South Africa. In South Africa, it mostly invades the sub-tropical eastern and northern range. Mechanical and chemical control options are expensive and ineffective. A biocontrol programme was initiated in South Africa in 1961. To date, 22 insect species, and a fungus have been introduced, of these 10, and the fungus have established. Three indigenous lepidopteran species and an exotic generalist pest mealybug are also associated with the weed. The variable success of some of the agents released on L. camara worldwide has been ascribed to a few factors. One important aspect is the large range of varieties encountered in the field. It is therefore essential to be able to predict the possible establishment and impact of agents on many varieties. Laboratory trials on five of the established agents showed clear varietal preferences. In the field, most of the biocontrol agents had limited geographic ranges, linked to altitudinal conditions, as higher populations were recorded at low lying warm summer rainfall areas. A pink and orange flower corolla lobe and throat colour combination and plants with few to medium leaf hairs were most abundant in South Africa. Most of the agent species had individual preferences towards different flower colour combinations, as the agents built up different population levels on varieties in the field, within the suitable geographic region for the insect species. Eight agents preferred smooth leaved varieties, while three preferred hairy leaves, and three had no specific preference to leaf hairiness. Varietal preferences thus did play a significant role in agent populations and accompanied impact achieved in the field. New candidate agents need to be proven specific under quarantine conditions and the results extrapolated to predict specificity in the field, while avoiding potential non-target effects. Many authors have questioned the validity of laboratory host specificity trials. The conventional wisdom is that insects portray a far wider host range in the laboratory than what they would do in the field. In other words, laboratory studies measure the physiological host range of an agent and are conservative and usually don’t reflect the ecological host range of agents in the field. To avoid unnecessary rejections of biocontrol agents, this study has made a retrospective study of the host specificity of agents established in the field. Their laboratory and field host ranges were compared and it was found that virtually all the agents reflect similar or less non-target effects in the field than predicted during multiple choice trials. Of the 14 agents, only one introduced species, Teleonemia scrupulosa, and the indigenous species, Hypena laceratalis and Aristea onychote were able to sustain populations on non-target species in the field in the absence of L. camara. Insect populations on non-target species were much reduced compared to that on L. camara. Furthermore non-target effects were only recorded on plant species closely related to the target weed. The multiple choice trials therefore predict field non-target effects accurately. Predictions of non-target effects of candidate agents can therefore be accurately predicted by laboratory studies, in terms of species likely to be affected and to what extent. One field that need further study though is the impact of non-target effects, especially on Lippia species by L. camara biocontrol agents.
- Full Text:
- Authors: Heystek, Fritz
- Date: 2006
- Subjects: Lantana camara -- South Africa , Biological pest control agents -- South Africa , Weeds -- Biological control -- South Africa , Invasive plants -- Biological control -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5725 , http://hdl.handle.net/10962/d1005411 , Lantana camara -- South Africa , Biological pest control agents -- South Africa , Weeds -- Biological control -- South Africa , Invasive plants -- Biological control -- South Africa
- Description: Varieties of Lantana camara (lantana) have been introduced into many countries of the world as ornamental plants and have become invasive weeds in many countries including South Africa. In South Africa, it mostly invades the sub-tropical eastern and northern range. Mechanical and chemical control options are expensive and ineffective. A biocontrol programme was initiated in South Africa in 1961. To date, 22 insect species, and a fungus have been introduced, of these 10, and the fungus have established. Three indigenous lepidopteran species and an exotic generalist pest mealybug are also associated with the weed. The variable success of some of the agents released on L. camara worldwide has been ascribed to a few factors. One important aspect is the large range of varieties encountered in the field. It is therefore essential to be able to predict the possible establishment and impact of agents on many varieties. Laboratory trials on five of the established agents showed clear varietal preferences. In the field, most of the biocontrol agents had limited geographic ranges, linked to altitudinal conditions, as higher populations were recorded at low lying warm summer rainfall areas. A pink and orange flower corolla lobe and throat colour combination and plants with few to medium leaf hairs were most abundant in South Africa. Most of the agent species had individual preferences towards different flower colour combinations, as the agents built up different population levels on varieties in the field, within the suitable geographic region for the insect species. Eight agents preferred smooth leaved varieties, while three preferred hairy leaves, and three had no specific preference to leaf hairiness. Varietal preferences thus did play a significant role in agent populations and accompanied impact achieved in the field. New candidate agents need to be proven specific under quarantine conditions and the results extrapolated to predict specificity in the field, while avoiding potential non-target effects. Many authors have questioned the validity of laboratory host specificity trials. The conventional wisdom is that insects portray a far wider host range in the laboratory than what they would do in the field. In other words, laboratory studies measure the physiological host range of an agent and are conservative and usually don’t reflect the ecological host range of agents in the field. To avoid unnecessary rejections of biocontrol agents, this study has made a retrospective study of the host specificity of agents established in the field. Their laboratory and field host ranges were compared and it was found that virtually all the agents reflect similar or less non-target effects in the field than predicted during multiple choice trials. Of the 14 agents, only one introduced species, Teleonemia scrupulosa, and the indigenous species, Hypena laceratalis and Aristea onychote were able to sustain populations on non-target species in the field in the absence of L. camara. Insect populations on non-target species were much reduced compared to that on L. camara. Furthermore non-target effects were only recorded on plant species closely related to the target weed. The multiple choice trials therefore predict field non-target effects accurately. Predictions of non-target effects of candidate agents can therefore be accurately predicted by laboratory studies, in terms of species likely to be affected and to what extent. One field that need further study though is the impact of non-target effects, especially on Lippia species by L. camara biocontrol agents.
- Full Text:
Leading strategic change: driving the transformation in the provision of legal services to the Eastern Cape Provincial government
- Authors: Beningfield, Perry Guy
- Date: 2006
- Subjects: Eastern Cape (South Africa) -- Politics and government Legal services -- South Africa -- Eastern Cape Organizational change Strategic planning Leadership
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:755 , http://hdl.handle.net/10962/d1003876
- Description: Effective change leadership is important to any organisation undergoing fundamental transformation. In particular, the ability of senior public sector leaders to successfully drive strategic change is crucial to meeting the developmental and service delivery challenges faced by the Province of the Eastern Cape in ensuring the effective, efficient and innovative government demanded by all its various stakeholders. The creation on 3 October of a Shared Legal Service situated in the Office of the Premier provided a unique opportunity to examine the leadership of this change initiative in the context of the organisational culture that existed in the provincial public service. This thesis consequently probes the phenomenon of effective change leadership by means of an examination of the understandings of the three change agents involved in driving the transformation of the provision of legal advisory services to the provincial administration and its constituent departments. The picture which emerges from the insights of the participants is one that casts a shadow over the validity of the contemporary theory of transformational leadership. Furthermore, the research conducted has identified the need to view the nature of effective change leadership through a more nuanced, situation-specific lens: one that appreciates the role of relationships and emotions, and that recognises the importance of culture and its impact on the success of organisational transformation. The case study of the Shared Legal Service change initiative provides useful insights into the many and varied challenges faced by public sector leaders in driving strategic transformation in the provincial administration. It offers an example of successful change leadership and demonstrates the need for change agents within the public service to harness more emotionally resonant and relational forms of leadership if they are to soar to new heights in meeting the service delivery expectations of all who look to provincial government to deliver the fruits of democracy.
- Full Text:
- Authors: Beningfield, Perry Guy
- Date: 2006
- Subjects: Eastern Cape (South Africa) -- Politics and government Legal services -- South Africa -- Eastern Cape Organizational change Strategic planning Leadership
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:755 , http://hdl.handle.net/10962/d1003876
- Description: Effective change leadership is important to any organisation undergoing fundamental transformation. In particular, the ability of senior public sector leaders to successfully drive strategic change is crucial to meeting the developmental and service delivery challenges faced by the Province of the Eastern Cape in ensuring the effective, efficient and innovative government demanded by all its various stakeholders. The creation on 3 October of a Shared Legal Service situated in the Office of the Premier provided a unique opportunity to examine the leadership of this change initiative in the context of the organisational culture that existed in the provincial public service. This thesis consequently probes the phenomenon of effective change leadership by means of an examination of the understandings of the three change agents involved in driving the transformation of the provision of legal advisory services to the provincial administration and its constituent departments. The picture which emerges from the insights of the participants is one that casts a shadow over the validity of the contemporary theory of transformational leadership. Furthermore, the research conducted has identified the need to view the nature of effective change leadership through a more nuanced, situation-specific lens: one that appreciates the role of relationships and emotions, and that recognises the importance of culture and its impact on the success of organisational transformation. The case study of the Shared Legal Service change initiative provides useful insights into the many and varied challenges faced by public sector leaders in driving strategic transformation in the provincial administration. It offers an example of successful change leadership and demonstrates the need for change agents within the public service to harness more emotionally resonant and relational forms of leadership if they are to soar to new heights in meeting the service delivery expectations of all who look to provincial government to deliver the fruits of democracy.
- Full Text:
Making sense of Men's Health: an investigation into the meanings men and women make of Men's Health
- Authors: McCance-Price, Maris
- Date: 2006
- Subjects: Men's Health (South Africa) , Men's magazines -- South Africa , Men in mass media , Women in mass media , Sex role in mass media , Men in popular culture , Women in popular culture , Mass media -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3464 , http://hdl.handle.net/10962/d1002919 , Men's Health (South Africa) , Men's magazines -- South Africa , Men in mass media , Women in mass media , Sex role in mass media , Men in popular culture , Women in popular culture , Mass media -- Social aspects
- Description: This study investigates the popular pleasures produced by readers of men's magazines, focusing primarily on the publication, Men's Health, which represents a new type of magazine catering for men. Using qualitative research methods such as textual analysis and reception analysis, the study explores the pleasures produced by both men and women from the consumption of such texts. The theoretical perspective of cultural studies informs this project, an approach that focuses on the generation and circulation of meanings in society. Focusing on the notion of the active audience and Hall's encoding/decoding model, this study examines readers' interpretations of the Men's Health text, focusing on the moment of consumption in the circuit of culture. Reception theory proposes the existence of "clustered readings" produced by interpretive communities that are socially rather than individually constructed. As a critical ethnography, the study interrogates these meanings with particular reference to questions of gender relations and power in society. Access to different discourses is structured by the social position of readers within relations of power and this study takes gender as a structuring principle. Therefore, this study also explores the particular discursive practices through which masculine and feminine imagery is produced by the Men's Health text and by its readers. The research findings support the more limited notion of the active audience espoused by theorists such as Hall (1980) offering further evidence to suggest that readers produce readings other than those preferred by the text and that therein lies the pleasure of the text for male and female readers. The research concludes that the popularity of Men's Health derives from the capacity of its readers to make multiple meanings of the text.
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- Authors: McCance-Price, Maris
- Date: 2006
- Subjects: Men's Health (South Africa) , Men's magazines -- South Africa , Men in mass media , Women in mass media , Sex role in mass media , Men in popular culture , Women in popular culture , Mass media -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3464 , http://hdl.handle.net/10962/d1002919 , Men's Health (South Africa) , Men's magazines -- South Africa , Men in mass media , Women in mass media , Sex role in mass media , Men in popular culture , Women in popular culture , Mass media -- Social aspects
- Description: This study investigates the popular pleasures produced by readers of men's magazines, focusing primarily on the publication, Men's Health, which represents a new type of magazine catering for men. Using qualitative research methods such as textual analysis and reception analysis, the study explores the pleasures produced by both men and women from the consumption of such texts. The theoretical perspective of cultural studies informs this project, an approach that focuses on the generation and circulation of meanings in society. Focusing on the notion of the active audience and Hall's encoding/decoding model, this study examines readers' interpretations of the Men's Health text, focusing on the moment of consumption in the circuit of culture. Reception theory proposes the existence of "clustered readings" produced by interpretive communities that are socially rather than individually constructed. As a critical ethnography, the study interrogates these meanings with particular reference to questions of gender relations and power in society. Access to different discourses is structured by the social position of readers within relations of power and this study takes gender as a structuring principle. Therefore, this study also explores the particular discursive practices through which masculine and feminine imagery is produced by the Men's Health text and by its readers. The research findings support the more limited notion of the active audience espoused by theorists such as Hall (1980) offering further evidence to suggest that readers produce readings other than those preferred by the text and that therein lies the pleasure of the text for male and female readers. The research concludes that the popularity of Men's Health derives from the capacity of its readers to make multiple meanings of the text.
- Full Text: