A study of plocamium corallorhiza secondary metabolites and their biological activity
- Authors: Mkwananzi, Henry Bayanda
- Date: 2005
- Subjects: Natural products -- Therapeutic use , Marine metabolites -- Therapeutic use , Marine pharmacology , Marine algae , Monoterpenes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3841 , http://hdl.handle.net/10962/d1007666 , Natural products -- Therapeutic use , Marine metabolites -- Therapeutic use , Marine pharmacology , Marine algae , Monoterpenes
- Description: Seaweeds of the genus Plocamium are known to produce a variety of halogenated monoterpenes. In addition to their ecological role as feeding deterrents, biological activities reported for these compounds include antibacterial, antialgal, antifungal and anticancer activities. An investigation of the non-polar extracts of the seaweed Plocamium corallorhiza resulted in the isolation of six known halogenated monoterpene compounds, 4-bromo-5-bromomethyl-1-chlorovinyl-2, 5-dichloro-methylcyclohexane (2.68), 1,4,8-tribromo-3 ,7-dichloro-3, 7-dimethyl-1,5-octadiene (2.67), 8-bromo-1 ,3,4,7-tetrachloro-3, 7-dimethyl-1,5-octadiene (2.66), 4,6-dibromo-1,1-dichloro-3,7-dimethyl-2,7-octadiene (2.64), 4,8-dibromo-1,1,7-trichloro-3,7-dimethyl-2,5-octadiene (2.65) and 3,4 ,6,7-tetrachloro-3, 7-dimethyl-1-octene (2.63) as well as eight new compounds, including five halogenated monoterpene aldehydes. The new compounds were identified by 1D and 2D NMR spectroscopic techniques as: 8-Bromo-6,7-dichloro-3,7-dimethyl-octa-2,4-dienal (2.72), 8-Bromo-1,1,2,7-tetrachloro-3,7-dimethyl-octa-3,5-diene (2.70), 4,8-Dichloro-3,7-dimethyl-octa-2,4,6-trienal (2.74), 4-Bromo-8-chloro-3, 7-di methyl-octa-2, 6-dienal (2 76), 8-Bromo-4-chloro-3, 7-dimethyl-octa-2,4 ,6-trienaI (2.75), 4-Bromo-1,3,6,7-tetrachloro-3 ,7-dimethyl-octa-1,4-diene (2.71), 8-Bromo-1,3,4,7-tetrachloro-3,7-dimethyl-octa-1,5-diene (2.69), 4,6-Dibromo-3,7 -dimethyl-octa-2,7-dienal (2.73). All compounds were screened for antimicrobial activity, brine shrimp lethality and cytotoxicity towards oesophageal cancer cells. Compound 2.68 was toxic to brine shrimp larvae at a concentration of 50 μ/mL. It also showed promising activity towards oesophageal cancer cells with an IC₅₀, of 2 μg/mL.
- Full Text:
- Date Issued: 2005
- Authors: Mkwananzi, Henry Bayanda
- Date: 2005
- Subjects: Natural products -- Therapeutic use , Marine metabolites -- Therapeutic use , Marine pharmacology , Marine algae , Monoterpenes
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3841 , http://hdl.handle.net/10962/d1007666 , Natural products -- Therapeutic use , Marine metabolites -- Therapeutic use , Marine pharmacology , Marine algae , Monoterpenes
- Description: Seaweeds of the genus Plocamium are known to produce a variety of halogenated monoterpenes. In addition to their ecological role as feeding deterrents, biological activities reported for these compounds include antibacterial, antialgal, antifungal and anticancer activities. An investigation of the non-polar extracts of the seaweed Plocamium corallorhiza resulted in the isolation of six known halogenated monoterpene compounds, 4-bromo-5-bromomethyl-1-chlorovinyl-2, 5-dichloro-methylcyclohexane (2.68), 1,4,8-tribromo-3 ,7-dichloro-3, 7-dimethyl-1,5-octadiene (2.67), 8-bromo-1 ,3,4,7-tetrachloro-3, 7-dimethyl-1,5-octadiene (2.66), 4,6-dibromo-1,1-dichloro-3,7-dimethyl-2,7-octadiene (2.64), 4,8-dibromo-1,1,7-trichloro-3,7-dimethyl-2,5-octadiene (2.65) and 3,4 ,6,7-tetrachloro-3, 7-dimethyl-1-octene (2.63) as well as eight new compounds, including five halogenated monoterpene aldehydes. The new compounds were identified by 1D and 2D NMR spectroscopic techniques as: 8-Bromo-6,7-dichloro-3,7-dimethyl-octa-2,4-dienal (2.72), 8-Bromo-1,1,2,7-tetrachloro-3,7-dimethyl-octa-3,5-diene (2.70), 4,8-Dichloro-3,7-dimethyl-octa-2,4,6-trienal (2.74), 4-Bromo-8-chloro-3, 7-di methyl-octa-2, 6-dienal (2 76), 8-Bromo-4-chloro-3, 7-dimethyl-octa-2,4 ,6-trienaI (2.75), 4-Bromo-1,3,6,7-tetrachloro-3 ,7-dimethyl-octa-1,4-diene (2.71), 8-Bromo-1,3,4,7-tetrachloro-3,7-dimethyl-octa-1,5-diene (2.69), 4,6-Dibromo-3,7 -dimethyl-octa-2,7-dienal (2.73). All compounds were screened for antimicrobial activity, brine shrimp lethality and cytotoxicity towards oesophageal cancer cells. Compound 2.68 was toxic to brine shrimp larvae at a concentration of 50 μ/mL. It also showed promising activity towards oesophageal cancer cells with an IC₅₀, of 2 μg/mL.
- Full Text:
- Date Issued: 2005
Action research on an organization development intervention in a secondary school in the Erongo education region of Namibia
- Authors: Neshila, Selma
- Date: 2005
- Subjects: Education -- Namibia , Educational change -- Namibia , Education and state -- Namibia , School management and organization -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1418 , http://hdl.handle.net/10962/d1003299
- Description: Organisations that will not, that resist, that cannot, that are incapable, that lack the confidence or that believe it’s not possible to change are likely to stagnate and die (Smith: work in progress). Since independence in March 1990, the new Namibian Government has realized that the quality, efficiency and effectiveness of Namibian schools depends on the ability of teachers and other stakeholders to be innovators and facilitators of change, especially through effective communication, effective meetings, working through conflict, solving problems and making decisions. Organization Development (OD) is an effective, planned change approach for improving organization workgroup processes. Resting on a foundation of values and assumptions about people and organizations, OD promotes collaboration, interdependence and interconnectedness, empowerment, participation and involvement in problem solving and decision-making for all members. Based primarily on a normative, re-educative strategy and secondarily on a rational-empirical strategy, OD assumes that people will change if and when they realize that change is advantageous to them. OD makes use of interventions to determine areas requiring change. The intervention used for my research included a survey-data-feedback (SDF) where data was gathered, analyzed and fed back to the participants. The data was used as a basis for problem solving and training in organizational processes of communication. The case study involved 23 teachers. Journal entries, observation, formal and non-formal interviews as well as focus interviews were used as data collection tools. Participants wanted to see immediate organizational changes thus it was important to remind them that OD is a long-term change approach and that there is no quick fix. Initially, participants were used to the norm of fault finding to determine areas requiring change. However, a year later, during problem solving sessions, I observed collaborative and positive involvement by all participants. Finally, the outcome of the intervention based on the data from the communication workshop and the problem-solving meetings revealed that participants want OD to be institutionalized in all Namibian schools.
- Full Text:
- Date Issued: 2005
- Authors: Neshila, Selma
- Date: 2005
- Subjects: Education -- Namibia , Educational change -- Namibia , Education and state -- Namibia , School management and organization -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1418 , http://hdl.handle.net/10962/d1003299
- Description: Organisations that will not, that resist, that cannot, that are incapable, that lack the confidence or that believe it’s not possible to change are likely to stagnate and die (Smith: work in progress). Since independence in March 1990, the new Namibian Government has realized that the quality, efficiency and effectiveness of Namibian schools depends on the ability of teachers and other stakeholders to be innovators and facilitators of change, especially through effective communication, effective meetings, working through conflict, solving problems and making decisions. Organization Development (OD) is an effective, planned change approach for improving organization workgroup processes. Resting on a foundation of values and assumptions about people and organizations, OD promotes collaboration, interdependence and interconnectedness, empowerment, participation and involvement in problem solving and decision-making for all members. Based primarily on a normative, re-educative strategy and secondarily on a rational-empirical strategy, OD assumes that people will change if and when they realize that change is advantageous to them. OD makes use of interventions to determine areas requiring change. The intervention used for my research included a survey-data-feedback (SDF) where data was gathered, analyzed and fed back to the participants. The data was used as a basis for problem solving and training in organizational processes of communication. The case study involved 23 teachers. Journal entries, observation, formal and non-formal interviews as well as focus interviews were used as data collection tools. Participants wanted to see immediate organizational changes thus it was important to remind them that OD is a long-term change approach and that there is no quick fix. Initially, participants were used to the norm of fault finding to determine areas requiring change. However, a year later, during problem solving sessions, I observed collaborative and positive involvement by all participants. Finally, the outcome of the intervention based on the data from the communication workshop and the problem-solving meetings revealed that participants want OD to be institutionalized in all Namibian schools.
- Full Text:
- Date Issued: 2005
An analysis of the compliance approach used by revenue authorities with specific reference to case selection and risk profiling
- Nel, M J
- Authors: Nel, M J
- Date: 2005
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:878 , http://hdl.handle.net/10962/d1001632
- Description: The vision of probably all revenue authorities is to promote compliance with the provisions of the taxation laws and to ensure responsible enforcement by the revenue authorities, thereby contributing to the economic well being of the country. As with virtually all revenue authorities the South African Revenue Services has to a large extent implemented the self-assessment approach to tax assessments. Because this system depends on this process of selfassessment, an effective risk-based audit approach is required to ensure that tax compliance and responsible enforcement is adhered to. An effective case selection methodology is required for revenue authorities to make informed choices on how best to direct their activities in order to address areas of greatest risk. Given these imperatives, the purpose of this study is to examine the case selection methodologies used by certain revenue authorities, including the South African Revenue Services, and to focus on the key elements of case selection: the use of computerised database systems, industry profiles, third party data and the role of the risk profiler. The results of the study indicate that the case selection methodology of the South African Revenue Services is lacking in some areas. Computerised risk analysis is limited to a certain classes of taxpayers and other aspects of concern are also highlighted in this study.
- Full Text:
- Date Issued: 2005
- Authors: Nel, M J
- Date: 2005
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:878 , http://hdl.handle.net/10962/d1001632
- Description: The vision of probably all revenue authorities is to promote compliance with the provisions of the taxation laws and to ensure responsible enforcement by the revenue authorities, thereby contributing to the economic well being of the country. As with virtually all revenue authorities the South African Revenue Services has to a large extent implemented the self-assessment approach to tax assessments. Because this system depends on this process of selfassessment, an effective risk-based audit approach is required to ensure that tax compliance and responsible enforcement is adhered to. An effective case selection methodology is required for revenue authorities to make informed choices on how best to direct their activities in order to address areas of greatest risk. Given these imperatives, the purpose of this study is to examine the case selection methodologies used by certain revenue authorities, including the South African Revenue Services, and to focus on the key elements of case selection: the use of computerised database systems, industry profiles, third party data and the role of the risk profiler. The results of the study indicate that the case selection methodology of the South African Revenue Services is lacking in some areas. Computerised risk analysis is limited to a certain classes of taxpayers and other aspects of concern are also highlighted in this study.
- Full Text:
- Date Issued: 2005
An analysis of the views of journalists and government officials regarding the impact of new vision's coverage of the Nakivubo Channel Rehabilitation Project
- Authors: Kaheru, Hamis
- Date: 2005
- Subjects: Nakivubo Urban Wetland (Uganda) , Nakivubo Channel Rehabilitation Project , New Vision (Uganda) , Environmental protection -- Press coverage -- Uganda , Government and the press -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3439 , http://hdl.handle.net/10962/d1002893 , Nakivubo Urban Wetland (Uganda) , Nakivubo Channel Rehabilitation Project , New Vision (Uganda) , Environmental protection -- Press coverage -- Uganda , Government and the press -- Uganda
- Full Text:
- Date Issued: 2005
- Authors: Kaheru, Hamis
- Date: 2005
- Subjects: Nakivubo Urban Wetland (Uganda) , Nakivubo Channel Rehabilitation Project , New Vision (Uganda) , Environmental protection -- Press coverage -- Uganda , Government and the press -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3439 , http://hdl.handle.net/10962/d1002893 , Nakivubo Urban Wetland (Uganda) , Nakivubo Channel Rehabilitation Project , New Vision (Uganda) , Environmental protection -- Press coverage -- Uganda , Government and the press -- Uganda
- Full Text:
- Date Issued: 2005
An assessment of the shore baitfishery in the Eastern Cape
- Authors: Mackenzie, Bernard Louis
- Date: 2005
- Subjects: Fishing baits -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fisheries -- South Africa -- Eastern Cape , Fishery -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5232 , http://hdl.handle.net/10962/d1005075 , Fishing baits -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fisheries -- South Africa -- Eastern Cape , Fishery -- Law and legislation -- South Africa
- Description: The collection of bait organisms goes hand-in-hand with shore-angling in South Africa, hence the level of bait-collection can be used as an indicator of fishing effort and vice versa. This emphasises the importance of understanding the fisheries for bait organisms. In 1998 the South African fisheries policy was revised, culminating in the Marine Living Resources Act No. 18 (1998) which supported sustainable development, equitable access to resources and stability of the industry. The policy also dealt with the needs of subsistence fishers who had previously been all but ignored. This study looks to continue in this direction by investigating the opportunities for the establishment and management implications of small-scale commercial baitfisheries in the Eastern Cape. Data were collected from eight clearly demarcated sampling areas using the roving survey method. A total of 97 survey trips were undertaken between September 2001 and April 2003 and 469 interviews were conducted on individual anglers. The data was analysed and discussed on the basis of three wider study regions and this allowed for a more accurate and focussed assessment of the fishery area and the potential for its formalisation. Recreational fishers (91.5%) dominated in each of the three regions surveyed. The low number of subsistence fishers encountered in this study is not a standard pattern throughout South Africa. The dominance of local residents in the shore-fishery could have an important impact on the success of a formalised baitfishery in that the greater proportion of the potential market is accessible throughout the year. Most recreational shore-anglers were middle-aged (43.8 years ± 12.9 years), and hence at the peak of their earning years and this may contribute towards the potential success of a small-scale commercial baitfishery. Most anglers and baitfishers were of the opinion that all South Africans owned and were responsible for managing the living marine resources. The vast majority of recreational users paid for and were in possession of valid permits and approved of the baitfishery regulations. This implies that the greater majority of users recognise that the state is the rightful custodian of the resource and is responsible for management. No subsistence users were in possession of permits. Resource users in the Gamtoos to Tsitsikamma National Park region, where the inspection rate was highest, had the best knowledge of the regulations regarding both baitfishing (67.2% ± 38.8%) and angling (79.8 ± 21.4%). This substantiates the hypothesis that there is a direct correlation between knowledge of the regulations and the rate of inspection. About 475 000 angler-days/year were fished in the study area, with the highest number of angler-days recorded in or near urban and peri-urban areas. Bronze bream (65.9%) and dusky kob (61.1%) were the two most commonly targeted species, followed by white steenbras (31.7%), white musselcracker (31.4%) and blacktail (20.2%). A total of four purchased and 19 collected bait species was recorded during the study. Sardine, chokka and pink prawn were the most frequently encountered purchased bait. Red bait, sand prawn, mullet, siffie, sand mussel, bloodworm and saddleback were the most frequently encountered collected bait species. Sand prawn was identified as the preferred bait species for a wide range of angling species. The total quantity of bait organisms used per fishing trip was markedly less than the total amount collected per trip. The ban of off-road vehicles (ORV's) from beaches (20 January 2002) resulted in spatial shifts in angler effort in certain areas, suggesting that total effort has reduced in areas where ORV's were commonly used. Subsequent to the ban, fishers were encountered, on average, much closer to access points. The value of small-scale baitfisheries within the total study area was estimated at about R7 million per year. Across the entire study area red bait was identified as the most valuable bait in the rock-and-surf fishery in monetary terms, while sand prawn was also important. The findings led to the conclusion that small-scale commercial baitfisheries in the study area are potentially viable. Scenarios for the establishment of baitfisheries are suggested and discussed.
- Full Text:
- Date Issued: 2005
- Authors: Mackenzie, Bernard Louis
- Date: 2005
- Subjects: Fishing baits -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fisheries -- South Africa -- Eastern Cape , Fishery -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5232 , http://hdl.handle.net/10962/d1005075 , Fishing baits -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fisheries -- South Africa -- Eastern Cape , Fishery -- Law and legislation -- South Africa
- Description: The collection of bait organisms goes hand-in-hand with shore-angling in South Africa, hence the level of bait-collection can be used as an indicator of fishing effort and vice versa. This emphasises the importance of understanding the fisheries for bait organisms. In 1998 the South African fisheries policy was revised, culminating in the Marine Living Resources Act No. 18 (1998) which supported sustainable development, equitable access to resources and stability of the industry. The policy also dealt with the needs of subsistence fishers who had previously been all but ignored. This study looks to continue in this direction by investigating the opportunities for the establishment and management implications of small-scale commercial baitfisheries in the Eastern Cape. Data were collected from eight clearly demarcated sampling areas using the roving survey method. A total of 97 survey trips were undertaken between September 2001 and April 2003 and 469 interviews were conducted on individual anglers. The data was analysed and discussed on the basis of three wider study regions and this allowed for a more accurate and focussed assessment of the fishery area and the potential for its formalisation. Recreational fishers (91.5%) dominated in each of the three regions surveyed. The low number of subsistence fishers encountered in this study is not a standard pattern throughout South Africa. The dominance of local residents in the shore-fishery could have an important impact on the success of a formalised baitfishery in that the greater proportion of the potential market is accessible throughout the year. Most recreational shore-anglers were middle-aged (43.8 years ± 12.9 years), and hence at the peak of their earning years and this may contribute towards the potential success of a small-scale commercial baitfishery. Most anglers and baitfishers were of the opinion that all South Africans owned and were responsible for managing the living marine resources. The vast majority of recreational users paid for and were in possession of valid permits and approved of the baitfishery regulations. This implies that the greater majority of users recognise that the state is the rightful custodian of the resource and is responsible for management. No subsistence users were in possession of permits. Resource users in the Gamtoos to Tsitsikamma National Park region, where the inspection rate was highest, had the best knowledge of the regulations regarding both baitfishing (67.2% ± 38.8%) and angling (79.8 ± 21.4%). This substantiates the hypothesis that there is a direct correlation between knowledge of the regulations and the rate of inspection. About 475 000 angler-days/year were fished in the study area, with the highest number of angler-days recorded in or near urban and peri-urban areas. Bronze bream (65.9%) and dusky kob (61.1%) were the two most commonly targeted species, followed by white steenbras (31.7%), white musselcracker (31.4%) and blacktail (20.2%). A total of four purchased and 19 collected bait species was recorded during the study. Sardine, chokka and pink prawn were the most frequently encountered purchased bait. Red bait, sand prawn, mullet, siffie, sand mussel, bloodworm and saddleback were the most frequently encountered collected bait species. Sand prawn was identified as the preferred bait species for a wide range of angling species. The total quantity of bait organisms used per fishing trip was markedly less than the total amount collected per trip. The ban of off-road vehicles (ORV's) from beaches (20 January 2002) resulted in spatial shifts in angler effort in certain areas, suggesting that total effort has reduced in areas where ORV's were commonly used. Subsequent to the ban, fishers were encountered, on average, much closer to access points. The value of small-scale baitfisheries within the total study area was estimated at about R7 million per year. Across the entire study area red bait was identified as the most valuable bait in the rock-and-surf fishery in monetary terms, while sand prawn was also important. The findings led to the conclusion that small-scale commercial baitfisheries in the study area are potentially viable. Scenarios for the establishment of baitfisheries are suggested and discussed.
- Full Text:
- Date Issued: 2005
An evaluation of whether the management practices of four companies (representing the printing industry in Bulawayo, Zimbabwe) have affected their profitability and success in the period 2003-2004
- Authors: Farren, Sean Michael
- Date: 2005
- Subjects: Printing industry -- Zimbabwe Organization change -- Zimbabwe Success in business -- Zimbabwe Management -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:817 , http://hdl.handle.net/10962/d1007926
- Description: Nohria, Joyce and Roberson, a trio of academics in the United States, wrote an article in the July issue of the Harvard Business Review in 2003 entitled "What Really Works". For several years they had studied the management practices of 160 companies in the United States with a view to determining what made certain companies consistently successful. They found that the most profitable companies in their study were not successful because they utilised the latest management tools and techniques, but rather that they had a strong grasp of business basics. Companies outperformed their industrial peers, because they excelled at what they called the four primary management practices - Strategy, Execution, Culture and Structure. These practices were supplemented by a proficiency in any two out of four secondary practices - Talent, Innovation, Leadership and Mergers and Partnerships. They called this winning combination the 4 + 2 Formula for business success. The purpose of this thesis is to determine whether competence in these management practices applies in the Third World. The study will concentrate on four companies representing the printing industry in Bulawayo, Zimbabwe. Zimbabwean companies are faced with a number of unusual obstacles that do not exist in First World free market economies. This study will attempt to examine the nature of the obstacles faced and how each company deals with them. It will determine whether the management practices outlined by Nohria et ai, are valued to the same degree in the Zimbabwean context, and how far they contribute to profitability.Because of the pace of change in Zimbabwe, the research will focus on the period 2003 - 2004 and evaluate another management practice - change management. The forces of change can often be so radically negative, that if companies are not adequately prepared, they may face imminent collapse. Change management, the process of anticipating, reacting to and driving forces of change, has become a vital competency. Without it, the prospects of profitability and success in the Zimbabwean environment are slim. For this reason, this management practice will be given the same focus as those eight discussed by Nohria et al.
- Full Text:
- Date Issued: 2005
- Authors: Farren, Sean Michael
- Date: 2005
- Subjects: Printing industry -- Zimbabwe Organization change -- Zimbabwe Success in business -- Zimbabwe Management -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:817 , http://hdl.handle.net/10962/d1007926
- Description: Nohria, Joyce and Roberson, a trio of academics in the United States, wrote an article in the July issue of the Harvard Business Review in 2003 entitled "What Really Works". For several years they had studied the management practices of 160 companies in the United States with a view to determining what made certain companies consistently successful. They found that the most profitable companies in their study were not successful because they utilised the latest management tools and techniques, but rather that they had a strong grasp of business basics. Companies outperformed their industrial peers, because they excelled at what they called the four primary management practices - Strategy, Execution, Culture and Structure. These practices were supplemented by a proficiency in any two out of four secondary practices - Talent, Innovation, Leadership and Mergers and Partnerships. They called this winning combination the 4 + 2 Formula for business success. The purpose of this thesis is to determine whether competence in these management practices applies in the Third World. The study will concentrate on four companies representing the printing industry in Bulawayo, Zimbabwe. Zimbabwean companies are faced with a number of unusual obstacles that do not exist in First World free market economies. This study will attempt to examine the nature of the obstacles faced and how each company deals with them. It will determine whether the management practices outlined by Nohria et ai, are valued to the same degree in the Zimbabwean context, and how far they contribute to profitability.Because of the pace of change in Zimbabwe, the research will focus on the period 2003 - 2004 and evaluate another management practice - change management. The forces of change can often be so radically negative, that if companies are not adequately prepared, they may face imminent collapse. Change management, the process of anticipating, reacting to and driving forces of change, has become a vital competency. Without it, the prospects of profitability and success in the Zimbabwean environment are slim. For this reason, this management practice will be given the same focus as those eight discussed by Nohria et al.
- Full Text:
- Date Issued: 2005
An exploration of constructions of masculinity : a narrative study of young Zulu men's stories of 'being a man'
- Authors: Maxwell, Justin Kennedy
- Date: 2005
- Subjects: Masculinity -- South Africa -- KwaZulu-Natal , Men -- South Africa -- Psychology , Discourse analysis, Narrative -- Psychological aspects , Zulu (African people) -- Social life and customs , Men -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3251 , http://hdl.handle.net/10962/d1015763
- Description: Previously understood as a fixed and universal set of behaviours social constructionists are now arguing that masculinity is contextual and fluid, reflecting a multiplicity of different understandings. Within any 'cultural environment' the discourse of masculinity, culturally and historically bound, expresses attitudes and behaviours that shape the understanding of what it means to be a man. Adopting a narrative approach and analysis this research explores the stories of six Zulu men in seeking to elicit the aspects of their masculinity and show how these men negotiate an identity 'position' from the social narratives available to them. It was found that while the ideal Adult (responsible) man contrasts with the Young man's ('isoka' ) position there is a consistently hegemonic and patriarchal notion of masculinity.
- Full Text:
- Date Issued: 2005
- Authors: Maxwell, Justin Kennedy
- Date: 2005
- Subjects: Masculinity -- South Africa -- KwaZulu-Natal , Men -- South Africa -- Psychology , Discourse analysis, Narrative -- Psychological aspects , Zulu (African people) -- Social life and customs , Men -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3251 , http://hdl.handle.net/10962/d1015763
- Description: Previously understood as a fixed and universal set of behaviours social constructionists are now arguing that masculinity is contextual and fluid, reflecting a multiplicity of different understandings. Within any 'cultural environment' the discourse of masculinity, culturally and historically bound, expresses attitudes and behaviours that shape the understanding of what it means to be a man. Adopting a narrative approach and analysis this research explores the stories of six Zulu men in seeking to elicit the aspects of their masculinity and show how these men negotiate an identity 'position' from the social narratives available to them. It was found that while the ideal Adult (responsible) man contrasts with the Young man's ('isoka' ) position there is a consistently hegemonic and patriarchal notion of masculinity.
- Full Text:
- Date Issued: 2005
An exploration of health professional's perceptions of the role of clinical psychologists
- Authors: Zitianellis, Marina Sophia
- Date: 2005
- Subjects: Community health services -- South Africa , Community mental health services -- South Africa , Medical personnel -- South Africa -- Attitudes , Primary health care -- South Africa , Clinical psychologists
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3091 , http://hdl.handle.net/10962/d1002601 , Community health services -- South Africa , Community mental health services -- South Africa , Medical personnel -- South Africa -- Attitudes , Primary health care -- South Africa , Clinical psychologists
- Description: The South African government has initiated the transformation of health services in the country towards primary health care (PHC) in order to provide comprehensive care to individuals and families. The move to PHC involves an increased need for collaboration between health professionals. It is proposed that for effective team-work to take place, an understanding of the roles and functions of team members is imperative in providing quality mental health care. This study explored health professionals’ perceptions of the role and function of clinical psychologists working as part of a health care team in a community context. Three focus groups and three individual interviews were conducted with social workers, nurses and doctors. The data was then processed and analysed using a grounded theory method. The research highlighted the importance of knowledge, and how this affects referrals, perceptions, inter-professional relations and the perceived usefulness of clinical psychology and clinical psychologists. What is of significance is the potential power that the health professionals have as gatekeepers between the general public and clinical psychologists.
- Full Text:
- Date Issued: 2005
- Authors: Zitianellis, Marina Sophia
- Date: 2005
- Subjects: Community health services -- South Africa , Community mental health services -- South Africa , Medical personnel -- South Africa -- Attitudes , Primary health care -- South Africa , Clinical psychologists
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3091 , http://hdl.handle.net/10962/d1002601 , Community health services -- South Africa , Community mental health services -- South Africa , Medical personnel -- South Africa -- Attitudes , Primary health care -- South Africa , Clinical psychologists
- Description: The South African government has initiated the transformation of health services in the country towards primary health care (PHC) in order to provide comprehensive care to individuals and families. The move to PHC involves an increased need for collaboration between health professionals. It is proposed that for effective team-work to take place, an understanding of the roles and functions of team members is imperative in providing quality mental health care. This study explored health professionals’ perceptions of the role and function of clinical psychologists working as part of a health care team in a community context. Three focus groups and three individual interviews were conducted with social workers, nurses and doctors. The data was then processed and analysed using a grounded theory method. The research highlighted the importance of knowledge, and how this affects referrals, perceptions, inter-professional relations and the perceived usefulness of clinical psychology and clinical psychologists. What is of significance is the potential power that the health professionals have as gatekeepers between the general public and clinical psychologists.
- Full Text:
- Date Issued: 2005
An exploration of the effect of market-driven journalism on The Monitor newspaper's editorial content
- Authors: Agaba, Grace Rwomushana
- Date: 2005
- Subjects: Monitor (Uganda) , Journalism -- Political aspects -- Uganda , Journalism, Commercial -- Uganda , Mass media and public opinion -- Uganda , Mass media -- Political aspects -- Uganda , Freedom of the press -- Uganda , Press and politics -- Uganda , Journalism -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3416 , http://hdl.handle.net/10962/d1002869 , Monitor (Uganda) , Journalism -- Political aspects -- Uganda , Journalism, Commercial -- Uganda , Mass media and public opinion -- Uganda , Mass media -- Political aspects -- Uganda , Freedom of the press -- Uganda , Press and politics -- Uganda , Journalism -- Social aspects
- Description: The media today are under pressure from various fronts including governments, businesses as well as cultural interests. In the developed world, this pressure that led to the emergence of a new form of journalism that puts the demands of the market at the forefront. This commercial oriented journalism gives priority to articles that attract mass audiences like entertainment while it downplays information that promotes debates that is necessary for citizens to be able to have a voice on the issues that affect them. And since participation and discussion are cornerstones of a democratic process, market-driven journalism undermines democracy because it narrows down the forum for debate. As a result, active citizens are turned into passive observers in society. Although several studies about this phenomenon have been done in the western world, the same is happening in Africa because the media face similar challenges as in the West; challenges of globalisation and media conglomeration facilitated by the rapid advancing technology. This study, which is informed by political economy and market-driven journalism theories, notes that the media in Uganda are also faced with these challenges. The study is focused on Uganda’s only independent newspaper, The Monitor. The findings indicate that market-driven journalism is taking root at the expense of journalism that promotes citizenship and debate such as political reporting and opinions. For example, there has been an increase of entertainment, sports and supplement articles in The Monitor as compared to declining political reporting and opinions. More so, investigative reporting has dwindled over the years at the expense of increasing use of press releases. This is because entertainment and sports articles can attract big audiences that the newspaper needs to sell to advertisers. Advertisers are important because they provide financial support to the newspaper. However, in a country where democracy is in its formative stages, public information is necessary not only for citizens to make informed decisions but also to spur economic as well as social development.
- Full Text:
- Date Issued: 2005
- Authors: Agaba, Grace Rwomushana
- Date: 2005
- Subjects: Monitor (Uganda) , Journalism -- Political aspects -- Uganda , Journalism, Commercial -- Uganda , Mass media and public opinion -- Uganda , Mass media -- Political aspects -- Uganda , Freedom of the press -- Uganda , Press and politics -- Uganda , Journalism -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3416 , http://hdl.handle.net/10962/d1002869 , Monitor (Uganda) , Journalism -- Political aspects -- Uganda , Journalism, Commercial -- Uganda , Mass media and public opinion -- Uganda , Mass media -- Political aspects -- Uganda , Freedom of the press -- Uganda , Press and politics -- Uganda , Journalism -- Social aspects
- Description: The media today are under pressure from various fronts including governments, businesses as well as cultural interests. In the developed world, this pressure that led to the emergence of a new form of journalism that puts the demands of the market at the forefront. This commercial oriented journalism gives priority to articles that attract mass audiences like entertainment while it downplays information that promotes debates that is necessary for citizens to be able to have a voice on the issues that affect them. And since participation and discussion are cornerstones of a democratic process, market-driven journalism undermines democracy because it narrows down the forum for debate. As a result, active citizens are turned into passive observers in society. Although several studies about this phenomenon have been done in the western world, the same is happening in Africa because the media face similar challenges as in the West; challenges of globalisation and media conglomeration facilitated by the rapid advancing technology. This study, which is informed by political economy and market-driven journalism theories, notes that the media in Uganda are also faced with these challenges. The study is focused on Uganda’s only independent newspaper, The Monitor. The findings indicate that market-driven journalism is taking root at the expense of journalism that promotes citizenship and debate such as political reporting and opinions. For example, there has been an increase of entertainment, sports and supplement articles in The Monitor as compared to declining political reporting and opinions. More so, investigative reporting has dwindled over the years at the expense of increasing use of press releases. This is because entertainment and sports articles can attract big audiences that the newspaper needs to sell to advertisers. Advertisers are important because they provide financial support to the newspaper. However, in a country where democracy is in its formative stages, public information is necessary not only for citizens to make informed decisions but also to spur economic as well as social development.
- Full Text:
- Date Issued: 2005
An exploration of the role of uniforms in contributing to the embedding and transmitting of organizational culture
- Authors: Gibson-Tessendorf, Cornel
- Date: 2005
- Subjects: Organizational behavior Corporate culture Clothing and dress -- Social aspects Employees -- Uniform Uniforms
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:1170 , http://hdl.handle.net/10962/d1002786
- Description: Many companies today are using some form of uniforms for employees. This research is an exploration of the role of uniforms in contributing to the embedding and transmitting of organizational culture. Culture is the experiences and common learning of the organization that results in shared values and beliefs. According to Schein (1985: 14) culture has three levels, namely: artifacts, values, and basic underlying assumptions. The first level of the culture consists of the physical constructs of the organization, and therefore includes the uniforms, which is the focus of this study. Schein (1985: 223) further proposes that culture can be embedded and transmitted through various mechanisms. The research was conducted in the constructivist paradigm, at a tertiary institution of higher learning in Eastern Cape, South Africa. To ensure triangulation, three sources of data were used, namely: documentation; observation; and both individual and focus group interviews. The researcher argues that uniforms played a role in the embedding of the sample organization’s three levels of culture, which were expressed in terms of Hofstede’s (1991: 07) culture dimensions. Firstly, the use of the different uniforms by different groups, as well as the ranking indicated by the uniforms, played a role in embedding the high power distance culture. Secondly, the symbolism of security portrayed by the uniform played a role in embedding the high uncertainty avoidance culture. Thirdly, it was found that the uniform created unity amongst groups, resulting in greater expression of collectivism. Fourthly, the use of sensible and practical uniforms plays a role in embedding the feminine culture where competitiveness is avoided and relationships are nurtured. Lastly, the uniform plays a possible role in transforming the culture from short-term to a long-term orientation that focuses on the future.
- Full Text:
- Date Issued: 2005
- Authors: Gibson-Tessendorf, Cornel
- Date: 2005
- Subjects: Organizational behavior Corporate culture Clothing and dress -- Social aspects Employees -- Uniform Uniforms
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:1170 , http://hdl.handle.net/10962/d1002786
- Description: Many companies today are using some form of uniforms for employees. This research is an exploration of the role of uniforms in contributing to the embedding and transmitting of organizational culture. Culture is the experiences and common learning of the organization that results in shared values and beliefs. According to Schein (1985: 14) culture has three levels, namely: artifacts, values, and basic underlying assumptions. The first level of the culture consists of the physical constructs of the organization, and therefore includes the uniforms, which is the focus of this study. Schein (1985: 223) further proposes that culture can be embedded and transmitted through various mechanisms. The research was conducted in the constructivist paradigm, at a tertiary institution of higher learning in Eastern Cape, South Africa. To ensure triangulation, three sources of data were used, namely: documentation; observation; and both individual and focus group interviews. The researcher argues that uniforms played a role in the embedding of the sample organization’s three levels of culture, which were expressed in terms of Hofstede’s (1991: 07) culture dimensions. Firstly, the use of the different uniforms by different groups, as well as the ranking indicated by the uniforms, played a role in embedding the high power distance culture. Secondly, the symbolism of security portrayed by the uniform played a role in embedding the high uncertainty avoidance culture. Thirdly, it was found that the uniform created unity amongst groups, resulting in greater expression of collectivism. Fourthly, the use of sensible and practical uniforms plays a role in embedding the feminine culture where competitiveness is avoided and relationships are nurtured. Lastly, the uniform plays a possible role in transforming the culture from short-term to a long-term orientation that focuses on the future.
- Full Text:
- Date Issued: 2005
An exploration of understandings and expectations around differentiation in mathematics, science and technology education
- Authors: Cherub, Fauzia
- Date: 2005
- Subjects: Education -- South Africa Educational evaluation -- South Africa Comparative education Mathematics -- Study and teaching -- South Africa Science -- Study and teaching -- South Africa Technology -- Study and teaching -- South Africa Education and state -- South Africa Differentiation (Sociology) Competency-based education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1947 , http://hdl.handle.net/10962/d1008179
- Description: The exploratory study presented in this thesis is a case study, interpretive in nature and located in the qualitative paradigm. The conceptual focus is on differentiation, recognizing that learners vary from one another and so will need educators to consider a wide range of factors to enable learners to learn. The objectives of the study are: • To identify what Whole School Evaluation (WSE) supervisors understand by the term differentiation (conceptual) • To identify how WSE supervisors expect differentiation to be achieved by educators (conceptual). [n order to contextualise this research, a further objective was considered necessary: • To identify the roles of WSE supervisors (contextual) This was set in the context of mathematics, science and technology education. The study was carried out with a group of ten WSE supervisors who were involved in evaluating Mathematics, Science and or Technology education in the GET (General Education and Training) Band. Analysis of questionnaires and documents led to the identification of supervisory roles, while analysis of semi-structured interviews revealed a range of dimensions related to differentiation understandings and expectations. These dimensions have been developed into a typology which is then drawn upon in the development of a new conceptual model of differentiation, particularly relevant to the South African context. Findings presented in the study represent an attempt to understand and make recommendations related to policy, practice, research, curriculum and learning support material (LSM) development, training and evaluation. Textual layering in the form of reflective footnotes and issue boxes. plus specific reflective sections in the main text e.g. limitations and assumptions, help the text to achieve this goal. While the study was focused on the context of mathematics, science and technology education, it became apparent that the findings could be applied across all the learning areas.
- Full Text:
- Date Issued: 2005
- Authors: Cherub, Fauzia
- Date: 2005
- Subjects: Education -- South Africa Educational evaluation -- South Africa Comparative education Mathematics -- Study and teaching -- South Africa Science -- Study and teaching -- South Africa Technology -- Study and teaching -- South Africa Education and state -- South Africa Differentiation (Sociology) Competency-based education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1947 , http://hdl.handle.net/10962/d1008179
- Description: The exploratory study presented in this thesis is a case study, interpretive in nature and located in the qualitative paradigm. The conceptual focus is on differentiation, recognizing that learners vary from one another and so will need educators to consider a wide range of factors to enable learners to learn. The objectives of the study are: • To identify what Whole School Evaluation (WSE) supervisors understand by the term differentiation (conceptual) • To identify how WSE supervisors expect differentiation to be achieved by educators (conceptual). [n order to contextualise this research, a further objective was considered necessary: • To identify the roles of WSE supervisors (contextual) This was set in the context of mathematics, science and technology education. The study was carried out with a group of ten WSE supervisors who were involved in evaluating Mathematics, Science and or Technology education in the GET (General Education and Training) Band. Analysis of questionnaires and documents led to the identification of supervisory roles, while analysis of semi-structured interviews revealed a range of dimensions related to differentiation understandings and expectations. These dimensions have been developed into a typology which is then drawn upon in the development of a new conceptual model of differentiation, particularly relevant to the South African context. Findings presented in the study represent an attempt to understand and make recommendations related to policy, practice, research, curriculum and learning support material (LSM) development, training and evaluation. Textual layering in the form of reflective footnotes and issue boxes. plus specific reflective sections in the main text e.g. limitations and assumptions, help the text to achieve this goal. While the study was focused on the context of mathematics, science and technology education, it became apparent that the findings could be applied across all the learning areas.
- Full Text:
- Date Issued: 2005
An exploratory study of inclusion of learners with visual impairment into mainstream schools : the learners' parents' and educators' perspectives
- Authors: Ngxata, Ncediwe Gratia
- Date: 2005
- Subjects: Blind -- Education -- South Africa -- Eastern Cape Blind children -- Education -- South Africa -- Eastern Cape Children with visual disabilities -- South Africa -- Eastern Cape Mainstreaming in education -- South Africa -- Eastern Cape People with visual disabilities -- Education -- South Africa -- Eastern Cape Inclusive education -- South Africa -- Eastern Cape Special education -- South Africa -- Eastern Cape Parents of children with disabilities -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:5954 , http://hdl.handle.net/10962/d1008096
- Description: The study explores the experiences of inclusion of learners with visual impairment into mainstream schools in Mdantsane and Duncan Village in the Eastern Cape. The learners previously attended a special school away from home for the visually impaired in Port Elizabeth. The study delves into the barriers to inclusion as identified by the parents, educators and learners. A study of this nature was essential as many learners with visual impairment, are sent away to special schools on the grounds that they are unfit to attend mainstream schools when they could do well in mainstream schools when provided with appropriate support. As inclusive education is fairly new in South Africa, studies of this kind provide the Department of Education with some understanding of what the situation is with regard to the implementation of inclusive policies. The study attempts to establish from the participants what they think inclusive education is, the reason for introducing inclusive education, the barriers to inclusive education and the kind of support required to implement inclusive education in South Africa. Data collection was through semi-structured interviews and focus groups. A sample of educators, learners and parents was selected from two high schools and one primary school. Coding was used in data reduction and analysis. The study revealed that some learners, educators and parents are not totally against inclusive education as long as they could be provided with the necessary support. The study also revealed the excitement of learners and parents about attending nearby schools which are close to their homes. However two parents and learners are not satisfied due to lack of support and would rather go back to special school. The study ends with recommendations about how inclusive education could be intensified to ensure that learners with disabilities benefit from the mainstream schools. There is no doubt that this research study will be a strong contribution towards inclusive education initiatives particularly with regard to learners with visual impairment in the Eastern Cape Province.
- Full Text:
- Date Issued: 2005
- Authors: Ngxata, Ncediwe Gratia
- Date: 2005
- Subjects: Blind -- Education -- South Africa -- Eastern Cape Blind children -- Education -- South Africa -- Eastern Cape Children with visual disabilities -- South Africa -- Eastern Cape Mainstreaming in education -- South Africa -- Eastern Cape People with visual disabilities -- Education -- South Africa -- Eastern Cape Inclusive education -- South Africa -- Eastern Cape Special education -- South Africa -- Eastern Cape Parents of children with disabilities -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:5954 , http://hdl.handle.net/10962/d1008096
- Description: The study explores the experiences of inclusion of learners with visual impairment into mainstream schools in Mdantsane and Duncan Village in the Eastern Cape. The learners previously attended a special school away from home for the visually impaired in Port Elizabeth. The study delves into the barriers to inclusion as identified by the parents, educators and learners. A study of this nature was essential as many learners with visual impairment, are sent away to special schools on the grounds that they are unfit to attend mainstream schools when they could do well in mainstream schools when provided with appropriate support. As inclusive education is fairly new in South Africa, studies of this kind provide the Department of Education with some understanding of what the situation is with regard to the implementation of inclusive policies. The study attempts to establish from the participants what they think inclusive education is, the reason for introducing inclusive education, the barriers to inclusive education and the kind of support required to implement inclusive education in South Africa. Data collection was through semi-structured interviews and focus groups. A sample of educators, learners and parents was selected from two high schools and one primary school. Coding was used in data reduction and analysis. The study revealed that some learners, educators and parents are not totally against inclusive education as long as they could be provided with the necessary support. The study also revealed the excitement of learners and parents about attending nearby schools which are close to their homes. However two parents and learners are not satisfied due to lack of support and would rather go back to special school. The study ends with recommendations about how inclusive education could be intensified to ensure that learners with disabilities benefit from the mainstream schools. There is no doubt that this research study will be a strong contribution towards inclusive education initiatives particularly with regard to learners with visual impairment in the Eastern Cape Province.
- Full Text:
- Date Issued: 2005
An investigation into improved ionospheric F1 layer predictions over Grahamstown, South Africa
- Authors: Jacobs, Linda
- Date: 2005
- Subjects: Ionosphere , Ionospheric electron density -- South Africa -- Grahamstown , Neural networks (Computer Science)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5511 , http://hdl.handle.net/10962/d1008094 , Ionosphere , Ionospheric electron density -- South Africa -- Grahamstown , Neural networks (Computer Science)
- Description: This thesis describes an analysis of the F1 layer data obtained from the Grahamstown (33.32°S, 26.500 E), South Africa ionospheric station and the use of this data in improving a Neural Network (NN) based model of the F1 layer of the ionosphere. An application for real-time ray tracing through the South African ionosphere was identified, and for this application real-time evaluation of the electron density profile is essential. Raw real-time virtual height data are provided by a Lowell Digisonde (DPS), which employs the automatic scaling software, ARTIST whose output includes the virtual-toreal height data conversion. Experience has shown that there are times when the ray tracing performance is degraded because of difficulties surrounding the real-time characterization of the F1 region by ARTIST. Therefore available DPS data from the archives of the Grahamstown station were re-scaled manually in order to establish the extent of the problem and the times and conditions under which most inaccuracies occur. The re-scaled data were used to update the F1 contribution of an existing NN based ionospheric model, the LAM model, which predicts the values of the parameters required to produce an electron density profile. This thesis describes the development of three separate NNs required to predict the ionospheric characteristics and coefficients that are required to describe the F1 layer profile. Inputs to the NNs include day number, hour and measures of solar and magnetic activity. Outputs include the value of the critical frequency of the F1 layer, foF1, the real height of reflection at the peak, hmFl, as well as information on the state of the F1 layer. All data from the Grahamstown station from 1973 to 2003 was used to train these NNs. Tests show that the predictive ability of the LAM model has been improved by incorporating the re-scaled data.
- Full Text:
- Date Issued: 2005
- Authors: Jacobs, Linda
- Date: 2005
- Subjects: Ionosphere , Ionospheric electron density -- South Africa -- Grahamstown , Neural networks (Computer Science)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5511 , http://hdl.handle.net/10962/d1008094 , Ionosphere , Ionospheric electron density -- South Africa -- Grahamstown , Neural networks (Computer Science)
- Description: This thesis describes an analysis of the F1 layer data obtained from the Grahamstown (33.32°S, 26.500 E), South Africa ionospheric station and the use of this data in improving a Neural Network (NN) based model of the F1 layer of the ionosphere. An application for real-time ray tracing through the South African ionosphere was identified, and for this application real-time evaluation of the electron density profile is essential. Raw real-time virtual height data are provided by a Lowell Digisonde (DPS), which employs the automatic scaling software, ARTIST whose output includes the virtual-toreal height data conversion. Experience has shown that there are times when the ray tracing performance is degraded because of difficulties surrounding the real-time characterization of the F1 region by ARTIST. Therefore available DPS data from the archives of the Grahamstown station were re-scaled manually in order to establish the extent of the problem and the times and conditions under which most inaccuracies occur. The re-scaled data were used to update the F1 contribution of an existing NN based ionospheric model, the LAM model, which predicts the values of the parameters required to produce an electron density profile. This thesis describes the development of three separate NNs required to predict the ionospheric characteristics and coefficients that are required to describe the F1 layer profile. Inputs to the NNs include day number, hour and measures of solar and magnetic activity. Outputs include the value of the critical frequency of the F1 layer, foF1, the real height of reflection at the peak, hmFl, as well as information on the state of the F1 layer. All data from the Grahamstown station from 1973 to 2003 was used to train these NNs. Tests show that the predictive ability of the LAM model has been improved by incorporating the re-scaled data.
- Full Text:
- Date Issued: 2005
An investigation into perceptions of learner participation in the governance of secondary schools
- Authors: Nongubo, Mphuthumi J
- Date: 2005
- Subjects: Education and state -- South Africa , School management and organization -- South Africa , Education, Secondary -- South Africa , Student government -- South Africa , Student participation in administration -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2007 , http://hdl.handle.net/10962/d1015747
- Description: The question of learner participation or involvement in school governance has been a thorny issue in South Africa for decades. This study investigated secondary learners’ participation in the governance of their schools through representation by the Representative Council of Learners (RCLs), formerly known as school representative councils (SRCs). The study attempted to find out how learners participation is perceived by both the RCLs and the School Management Teams (SMTs). The study was conducted in five secondary schools in the Eastern Cape townships of Grahamstown. The research participants were members of School Management Teams and Representative Councils of Learners from these schools. The study was oriented in an interpretive paradigm following a qualitative approach. Questionnaires and in-depth semi-structured interviews were used to explore the perceptions of the two groups involved. The Department of Education documents that sanction RCL participation were referred to throughout and especially when analysing the respondents’ views. The main finding of the study is that learner involvement in school governance is still problematic, though it is presently provided for by policies that govern schools, including the South African Schools Act and the Guides for Representative Councils of Learners of 1999, in which their roles are outlined. The findings of the study reveal an indecisive and autocratic mindset among educators regarding the issue of learner involvement in governance and management. Furthermore, the Department of Education documents in place betray a narrow conception of RCL participation in school governance and still display an element of mistrust towards the learners concerning their roles in governance. As a result of these forces, the democratic potential of learner participation is undermined, and RCLs compromised as legitimate stakeholders.
- Full Text:
- Date Issued: 2005
- Authors: Nongubo, Mphuthumi J
- Date: 2005
- Subjects: Education and state -- South Africa , School management and organization -- South Africa , Education, Secondary -- South Africa , Student government -- South Africa , Student participation in administration -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2007 , http://hdl.handle.net/10962/d1015747
- Description: The question of learner participation or involvement in school governance has been a thorny issue in South Africa for decades. This study investigated secondary learners’ participation in the governance of their schools through representation by the Representative Council of Learners (RCLs), formerly known as school representative councils (SRCs). The study attempted to find out how learners participation is perceived by both the RCLs and the School Management Teams (SMTs). The study was conducted in five secondary schools in the Eastern Cape townships of Grahamstown. The research participants were members of School Management Teams and Representative Councils of Learners from these schools. The study was oriented in an interpretive paradigm following a qualitative approach. Questionnaires and in-depth semi-structured interviews were used to explore the perceptions of the two groups involved. The Department of Education documents that sanction RCL participation were referred to throughout and especially when analysing the respondents’ views. The main finding of the study is that learner involvement in school governance is still problematic, though it is presently provided for by policies that govern schools, including the South African Schools Act and the Guides for Representative Councils of Learners of 1999, in which their roles are outlined. The findings of the study reveal an indecisive and autocratic mindset among educators regarding the issue of learner involvement in governance and management. Furthermore, the Department of Education documents in place betray a narrow conception of RCL participation in school governance and still display an element of mistrust towards the learners concerning their roles in governance. As a result of these forces, the democratic potential of learner participation is undermined, and RCLs compromised as legitimate stakeholders.
- Full Text:
- Date Issued: 2005
An investigation into the possible neuroprotective or neurotoxic properties of metrifonate
- Authors: Ramsunder, Adrusha
- Date: 2005 , 2013-06-11
- Subjects: Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3833 , http://hdl.handle.net/10962/d1007560 , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Description: Alzheimer's disease is a progressive neurodegenerative disorder, in which there is a marked decline in neurotransmitters, especially those of the cholinergic pathways. One of the approaches to the symptomatic treatment of Alzheimer's disease is the inhibition of the breakdown of the neurotransmitter acetylcholine, using an acetylcholinesterase inhibitor. One such drug tested, is the organophosphate, metrifonate. Any drug used for the treatment of neurodegenerative disorders should preferably not induce further neurological damage. Thus, in the present study, we investigated whether or not metrifonate is neuroprotective. The in vivo and in vitro effect of this drug on free radicals generation shows that metrifonate increases the level ofthese reactive species. Lipid peroxidation induced using quinolinic acid (QA) and iron (II) and show that metrifonate increased the peroxidative damage induced by using quinolinic acid. Metrifonate is also able to induce lipid peroxidation both in vivo and in vitro. This was reduced in vitro in the presence of melatonin. Using iron (II), in vi/ro, there was no significant difference in the level of lipid peroxidation in the presence of this drug. An investigation of the activity of the mitochondrial electron transport chain and complex I of the electron transport chain in the presence of metrifonate revealed that metrifonate reduces the activity of the electron transport chain at the level of complex I. The activity of the mitochondrial electron transport chain was restored in the presence of melatonin. Pineal organ culture showed that metrifonate does not increase melatonin production. Histological and apoptosis studies show that tissue necrosis and apoptosis respectively, occur in the presence of this agent, which is reduced in the presence of melatonin. Metal binding studies were performed USing ultraviolet spectroscopy, and electrochemical analysis to examine the interaction of metrifonate with iron (II) and iron (III). No shift in the peak was observed in the ultraviolet spectrum when iron (ll) was added to metrifonate. Electrochemical studies show that there may be a very weak or no ligand formed between the metal and drug. This study shows that while drugs such as metrifonate may be beneficial in restoring cognitive function in Alzheimer's disease, it could also have the potential to enhance neurodegeneration, thus worsening the condition, in the long term. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2005
- Authors: Ramsunder, Adrusha
- Date: 2005 , 2013-06-11
- Subjects: Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3833 , http://hdl.handle.net/10962/d1007560 , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Description: Alzheimer's disease is a progressive neurodegenerative disorder, in which there is a marked decline in neurotransmitters, especially those of the cholinergic pathways. One of the approaches to the symptomatic treatment of Alzheimer's disease is the inhibition of the breakdown of the neurotransmitter acetylcholine, using an acetylcholinesterase inhibitor. One such drug tested, is the organophosphate, metrifonate. Any drug used for the treatment of neurodegenerative disorders should preferably not induce further neurological damage. Thus, in the present study, we investigated whether or not metrifonate is neuroprotective. The in vivo and in vitro effect of this drug on free radicals generation shows that metrifonate increases the level ofthese reactive species. Lipid peroxidation induced using quinolinic acid (QA) and iron (II) and show that metrifonate increased the peroxidative damage induced by using quinolinic acid. Metrifonate is also able to induce lipid peroxidation both in vivo and in vitro. This was reduced in vitro in the presence of melatonin. Using iron (II), in vi/ro, there was no significant difference in the level of lipid peroxidation in the presence of this drug. An investigation of the activity of the mitochondrial electron transport chain and complex I of the electron transport chain in the presence of metrifonate revealed that metrifonate reduces the activity of the electron transport chain at the level of complex I. The activity of the mitochondrial electron transport chain was restored in the presence of melatonin. Pineal organ culture showed that metrifonate does not increase melatonin production. Histological and apoptosis studies show that tissue necrosis and apoptosis respectively, occur in the presence of this agent, which is reduced in the presence of melatonin. Metal binding studies were performed USing ultraviolet spectroscopy, and electrochemical analysis to examine the interaction of metrifonate with iron (II) and iron (III). No shift in the peak was observed in the ultraviolet spectrum when iron (ll) was added to metrifonate. Electrochemical studies show that there may be a very weak or no ligand formed between the metal and drug. This study shows that while drugs such as metrifonate may be beneficial in restoring cognitive function in Alzheimer's disease, it could also have the potential to enhance neurodegeneration, thus worsening the condition, in the long term. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2005
An investigation of an undergraduate course module on the ethical aspects of information systems
- Authors: Charlesworth, Matthew
- Date: 2005
- Subjects: Information technology , Information technology -- Moral and ethical aspects , Computers -- Moral and ethical aspects , Computer science -- Study and teaching (Higher) -- Curricula , Computer engineering -- Study and teaching (Higher) -- Curricula , Software engineering -- Study and teaching (Higher) -- Curricula , Information technology -- study and teaching (Higher) -- Curricula
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1139 , http://hdl.handle.net/10962/d1002768 , Information technology , Information technology -- Moral and ethical aspects , Computers -- Moral and ethical aspects , Computer science -- Study and teaching (Higher) -- Curricula , Computer engineering -- Study and teaching (Higher) -- Curricula , Software engineering -- Study and teaching (Higher) -- Curricula , Information technology -- study and teaching (Higher) -- Curricula
- Description: An increased emphasis is being placed on ethics in Information Systems. An investigation of: the relevant literature which highlighted the growth of, and importance in understanding the moral philosophies which underlie Computer Ethics; and the official curricula recommendations that have increasingly and consistently recommended inclusion of courses describing the Social, Professional and Ethical responsibilities of Information Systems Professionals; and informed by the observations from two empirical Studies that showed the extent of unethical behaviour, and how this behaviour is diminished in those who have received formal tertiary level education resulted in a proposed new course module on Ethics in Information Systems. The module follows a sandwich-approach whereby two stand-alone modules are conducted on either side of integrated Computer Ethics content within the rest of the curriculum.
- Full Text:
- Date Issued: 2005
- Authors: Charlesworth, Matthew
- Date: 2005
- Subjects: Information technology , Information technology -- Moral and ethical aspects , Computers -- Moral and ethical aspects , Computer science -- Study and teaching (Higher) -- Curricula , Computer engineering -- Study and teaching (Higher) -- Curricula , Software engineering -- Study and teaching (Higher) -- Curricula , Information technology -- study and teaching (Higher) -- Curricula
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1139 , http://hdl.handle.net/10962/d1002768 , Information technology , Information technology -- Moral and ethical aspects , Computers -- Moral and ethical aspects , Computer science -- Study and teaching (Higher) -- Curricula , Computer engineering -- Study and teaching (Higher) -- Curricula , Software engineering -- Study and teaching (Higher) -- Curricula , Information technology -- study and teaching (Higher) -- Curricula
- Description: An increased emphasis is being placed on ethics in Information Systems. An investigation of: the relevant literature which highlighted the growth of, and importance in understanding the moral philosophies which underlie Computer Ethics; and the official curricula recommendations that have increasingly and consistently recommended inclusion of courses describing the Social, Professional and Ethical responsibilities of Information Systems Professionals; and informed by the observations from two empirical Studies that showed the extent of unethical behaviour, and how this behaviour is diminished in those who have received formal tertiary level education resulted in a proposed new course module on Ethics in Information Systems. The module follows a sandwich-approach whereby two stand-alone modules are conducted on either side of integrated Computer Ethics content within the rest of the curriculum.
- Full Text:
- Date Issued: 2005
An investigation of female leaders' perceptions of organisational culture and leadership in a Catholic High School
- Jean-Louis, Lily-Claire Virginie
- Authors: Jean-Louis, Lily-Claire Virginie
- Date: 2005
- Subjects: Catholic schools -- South Africa -- Administration School management and organization -- South Africa Educational leadership -- South Africa Corporate culture -- South Africa Women school administrators -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1625 , http://hdl.handle.net/10962/d1003507
- Description: For the past thirty years, leadership theories have focused on the importance of the individual within the school organisation. The shared assumptions and beliefs of the individuals working in the same organisation shape the school’s organisational culture, and organisational culture is a salient factor which should be considered when understanding educational leadership. The focus of my study is to explore the relationship between organisational culture and leadership. In the same context, new approaches to the study of leadership have explored the issue of gender in leadership. Female leadership studies - the second focus of this study - seek not only to restore the place of the individual but also argue a place for women in educational leadership. Based in the interpretive paradigm, this is a case study of a Catholic all-girl secondary school called the Loreto Convent School of Pretoria. Historically, the Loreto schools have aimed at promoting and empowering girls’ education and female leadership. It was therefore an appropriate site in which to explore organisational culture and its relationship with leadership, particularly female leadership. I purposefully chose three of the school’s female leaders - the school’s principal, the High school Head of Department and the High school head girl - focusing on their perceptions and experiences of their leadership and the school’s culture. My research findings show that an understanding of the relationship between organisational culture and leadership cannot be complete without acknowledging the importance of the leader as an individual, with his/her personal background and values, taking into account gender as well as the multiple roles that the individual has in society. Furthermore, the ‘humane’ characteristic of educational leadership leads to an understanding that the leader is often confronted with conflicting situations where he/she is caught between personal/organisational values and the need to achieve the task. Finally, my findings show that contemporary leaders are now called upon to work and participate in the promotion of social justice in order to fight against society’s socio-economic inequality and improve the quality of education and life.
- Full Text:
- Date Issued: 2005
- Authors: Jean-Louis, Lily-Claire Virginie
- Date: 2005
- Subjects: Catholic schools -- South Africa -- Administration School management and organization -- South Africa Educational leadership -- South Africa Corporate culture -- South Africa Women school administrators -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1625 , http://hdl.handle.net/10962/d1003507
- Description: For the past thirty years, leadership theories have focused on the importance of the individual within the school organisation. The shared assumptions and beliefs of the individuals working in the same organisation shape the school’s organisational culture, and organisational culture is a salient factor which should be considered when understanding educational leadership. The focus of my study is to explore the relationship between organisational culture and leadership. In the same context, new approaches to the study of leadership have explored the issue of gender in leadership. Female leadership studies - the second focus of this study - seek not only to restore the place of the individual but also argue a place for women in educational leadership. Based in the interpretive paradigm, this is a case study of a Catholic all-girl secondary school called the Loreto Convent School of Pretoria. Historically, the Loreto schools have aimed at promoting and empowering girls’ education and female leadership. It was therefore an appropriate site in which to explore organisational culture and its relationship with leadership, particularly female leadership. I purposefully chose three of the school’s female leaders - the school’s principal, the High school Head of Department and the High school head girl - focusing on their perceptions and experiences of their leadership and the school’s culture. My research findings show that an understanding of the relationship between organisational culture and leadership cannot be complete without acknowledging the importance of the leader as an individual, with his/her personal background and values, taking into account gender as well as the multiple roles that the individual has in society. Furthermore, the ‘humane’ characteristic of educational leadership leads to an understanding that the leader is often confronted with conflicting situations where he/she is caught between personal/organisational values and the need to achieve the task. Finally, my findings show that contemporary leaders are now called upon to work and participate in the promotion of social justice in order to fight against society’s socio-economic inequality and improve the quality of education and life.
- Full Text:
- Date Issued: 2005
An investigation of hair modelling and rendering techniques with emphasis on African hairstyles
- Authors: Patrick, Deborah Michelle
- Date: 2005 , 2013-10-17
- Subjects: RenderMan , Hairstyles -- Africa , Hairstyles -- Computer simulation -- Africa , Hairdressing of Black people , Computer graphics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4639 , http://hdl.handle.net/10962/d1006561 , RenderMan , Hairstyles -- Africa , Hairstyles -- Computer simulation -- Africa , Hairdressing of Black people , Computer graphics
- Description: Many computer graphics applications make use of virtual humans. Methods for modelling and rendering hair are needed so that hairstyles can be added to the virtual humans. Modelling and rendering hair is challenging due to the large number of hair strands and their geometric properties, the complex lighting effects that occur among the strands of hair, and the complexity and large variation of human hairstyles. While methods have been developed for generating hair, no methods exist for generating African hair, which differs from hair of other ethnic groups. This thesis presents methods for modelling and rendering African hair. Existing hair modelling and rendering techniques are investigated, and the knowledge gained from the investigation is used to develop or enhance hair modelling and rendering techniques to produce three different forms of hair commonly found in African hairstyles. The different forms of hair identified are natural curly hair, straightened hair, and braids or twists of hair. The hair modelling techniques developed are implemented as plug-ins for the graphics program LightWave 3D. The plug-ins developed not only model the three identified forms of hair, but also add the modelled hair to a model of a head, and can be used to create a variety of African hairstyles. The plug-ins significantly reduce the time spent on hair modelling. Tests performed show that increasing the number of polygons used to model hair increases the quality of the hair produced, but also increases the rendering time. However, there is usually an upper bound to the number of polygons needed to produce a reasonable hairstyle, making it feasible to add African hairstyles to virtual humans. The rendering aspects investigated include hair illumination, texturing, shadowing and antialiasing. An anisotropic illumination model is developed that considers the properties of African hair, including the colouring, opacity and narrow width of the hair strands. Texturing is used in several instances to create the effect of individual strands of hair. Results show that texturing is useful for representing many hair strands because the density of the hair in a texture map does not have an effect on the rendering time. The importance of including a shadowing technique and applying an anti-aliasing method when rendering hair is demonstrated. The rendering techniques are implemented using the RenderMan Interface and Shading Language. A number of complete African hairstyles are shown, demonstrating that the techniques can be used to model and render African hair successfully. , GNU Ghostscript 7.07
- Full Text:
- Date Issued: 2005
- Authors: Patrick, Deborah Michelle
- Date: 2005 , 2013-10-17
- Subjects: RenderMan , Hairstyles -- Africa , Hairstyles -- Computer simulation -- Africa , Hairdressing of Black people , Computer graphics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4639 , http://hdl.handle.net/10962/d1006561 , RenderMan , Hairstyles -- Africa , Hairstyles -- Computer simulation -- Africa , Hairdressing of Black people , Computer graphics
- Description: Many computer graphics applications make use of virtual humans. Methods for modelling and rendering hair are needed so that hairstyles can be added to the virtual humans. Modelling and rendering hair is challenging due to the large number of hair strands and their geometric properties, the complex lighting effects that occur among the strands of hair, and the complexity and large variation of human hairstyles. While methods have been developed for generating hair, no methods exist for generating African hair, which differs from hair of other ethnic groups. This thesis presents methods for modelling and rendering African hair. Existing hair modelling and rendering techniques are investigated, and the knowledge gained from the investigation is used to develop or enhance hair modelling and rendering techniques to produce three different forms of hair commonly found in African hairstyles. The different forms of hair identified are natural curly hair, straightened hair, and braids or twists of hair. The hair modelling techniques developed are implemented as plug-ins for the graphics program LightWave 3D. The plug-ins developed not only model the three identified forms of hair, but also add the modelled hair to a model of a head, and can be used to create a variety of African hairstyles. The plug-ins significantly reduce the time spent on hair modelling. Tests performed show that increasing the number of polygons used to model hair increases the quality of the hair produced, but also increases the rendering time. However, there is usually an upper bound to the number of polygons needed to produce a reasonable hairstyle, making it feasible to add African hairstyles to virtual humans. The rendering aspects investigated include hair illumination, texturing, shadowing and antialiasing. An anisotropic illumination model is developed that considers the properties of African hair, including the colouring, opacity and narrow width of the hair strands. Texturing is used in several instances to create the effect of individual strands of hair. Results show that texturing is useful for representing many hair strands because the density of the hair in a texture map does not have an effect on the rendering time. The importance of including a shadowing technique and applying an anti-aliasing method when rendering hair is demonstrated. The rendering techniques are implemented using the RenderMan Interface and Shading Language. A number of complete African hairstyles are shown, demonstrating that the techniques can be used to model and render African hair successfully. , GNU Ghostscript 7.07
- Full Text:
- Date Issued: 2005
An investigation of how Kampala teenagers who read Straight talk negotiate HIV/AIDS messages
- Kaija, Barbara Night Mbabazi
- Authors: Kaija, Barbara Night Mbabazi
- Date: 2005
- Subjects: AIDS (Disease) -- Uganda -- Kampala Straight talk AIDS (Disease) -- Social aspects -- Uganda -- Kampala AIDS (Disease) in adolescence -- Uganda -- Kampala Teenagers -- Diseases -- Uganda -- Kampala AIDS (Disease) -- Study and teaching AIDS (Disease) in mass media Teenagers -- Sexual behavior -- Uganda -- Kampala AIDS (Disease) -- Prevention -- Uganda -- Kampala
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3440 , http://hdl.handle.net/10962/d1002894
- Description: This study is a qualitative ethnographic investigation of how teenagers in Kampala, Uganda, who read the HIV/AIDS publication aimed at adolescents, Straight Talk, negotiate HIV/AIDS messages. It seeks to establish to what extent these secondary school teenagers accept the key messages (known as ABC; Abstain, Be faithful or use a Condom) and understand the factual aspects of the messages about HIV/AIDS, its process of transmission and prevention. It also seeks to probe how the lived realities of the teenagers affect their particular negotiations of the HIV/AIDS messages. It includes a focus on how proximity to HIV/AIDS, gender and family economic disposition might affect teenagers, negotiation of the HIV/AIDS meanings. To investigate the respondents’ reception of HIV/AIDS messages, the study employed focus groups that consisted of two stages, namely the ‘news game’ and group discussions. In the ‘news game’ stage (Philo, 1990; Kitzinger, 1993) the teenage participants were required to produce a version of a one-page copy of an HIV/AIDS newspaper targeting teenagers. In the second stage of the focus group a structured discussion probed the teenagers’ negotiation of the HIV/AIDS media messages. In the news game, the teenagers on the whole reproduced the key Straight Talk HIV/AIDS messages ‘Abstain, Be faithful or use a Condom’ and also images showing the effects of HIV/AIDS but featured fewer images depicting the factual aspects of HIV/AIDS process of transmission and risky behaviour. In the structured discussion that followed the news game, it was evident that not all the teenagers necessarily believed the messages they produced. In spite of producing the ABC Straight Talk messages, some of them were uncertain and confused about the absolute safety of the condom because of fears that they were either porous, expired or would interfere with sexual pleasure. Secondly, though many of the teenagers in the study reproduced images that showed that they consider marriage as desirable and talked about their desire to abstain from sex till marriage, a considerable number think abstinence is not achievable due to competing values. Thirdly, the participant teenagers could differentiate between HIV and AIDS but many did not realise that with the advent of anti-retroviral drugs even people who have AIDS can look normal. In spite of repeating the Straight Talk message that “no one was safe” and being aware of the risky behaviour that their fellow teenagers get involved in, the teenagers seemed to think that their age cohort is safe from HIV and it is the adults who are likely to infect them. The study findings further indicate that the teenagers’ lived experience at times influence their negotiation of HIV/AIDS media messages. This was probed in terms of economic standing, gender and proximity to HIV/AIDS. In relation to gender one surprising discovery was that certain girls in the study feared getting pregnant more than getting HIV/AIDS. The study finally suggests that these findings are of significance for designing future media initiatives in relation to HIV/AIDS.
- Full Text:
- Date Issued: 2005
- Authors: Kaija, Barbara Night Mbabazi
- Date: 2005
- Subjects: AIDS (Disease) -- Uganda -- Kampala Straight talk AIDS (Disease) -- Social aspects -- Uganda -- Kampala AIDS (Disease) in adolescence -- Uganda -- Kampala Teenagers -- Diseases -- Uganda -- Kampala AIDS (Disease) -- Study and teaching AIDS (Disease) in mass media Teenagers -- Sexual behavior -- Uganda -- Kampala AIDS (Disease) -- Prevention -- Uganda -- Kampala
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3440 , http://hdl.handle.net/10962/d1002894
- Description: This study is a qualitative ethnographic investigation of how teenagers in Kampala, Uganda, who read the HIV/AIDS publication aimed at adolescents, Straight Talk, negotiate HIV/AIDS messages. It seeks to establish to what extent these secondary school teenagers accept the key messages (known as ABC; Abstain, Be faithful or use a Condom) and understand the factual aspects of the messages about HIV/AIDS, its process of transmission and prevention. It also seeks to probe how the lived realities of the teenagers affect their particular negotiations of the HIV/AIDS messages. It includes a focus on how proximity to HIV/AIDS, gender and family economic disposition might affect teenagers, negotiation of the HIV/AIDS meanings. To investigate the respondents’ reception of HIV/AIDS messages, the study employed focus groups that consisted of two stages, namely the ‘news game’ and group discussions. In the ‘news game’ stage (Philo, 1990; Kitzinger, 1993) the teenage participants were required to produce a version of a one-page copy of an HIV/AIDS newspaper targeting teenagers. In the second stage of the focus group a structured discussion probed the teenagers’ negotiation of the HIV/AIDS media messages. In the news game, the teenagers on the whole reproduced the key Straight Talk HIV/AIDS messages ‘Abstain, Be faithful or use a Condom’ and also images showing the effects of HIV/AIDS but featured fewer images depicting the factual aspects of HIV/AIDS process of transmission and risky behaviour. In the structured discussion that followed the news game, it was evident that not all the teenagers necessarily believed the messages they produced. In spite of producing the ABC Straight Talk messages, some of them were uncertain and confused about the absolute safety of the condom because of fears that they were either porous, expired or would interfere with sexual pleasure. Secondly, though many of the teenagers in the study reproduced images that showed that they consider marriage as desirable and talked about their desire to abstain from sex till marriage, a considerable number think abstinence is not achievable due to competing values. Thirdly, the participant teenagers could differentiate between HIV and AIDS but many did not realise that with the advent of anti-retroviral drugs even people who have AIDS can look normal. In spite of repeating the Straight Talk message that “no one was safe” and being aware of the risky behaviour that their fellow teenagers get involved in, the teenagers seemed to think that their age cohort is safe from HIV and it is the adults who are likely to infect them. The study findings further indicate that the teenagers’ lived experience at times influence their negotiation of HIV/AIDS media messages. This was probed in terms of economic standing, gender and proximity to HIV/AIDS. In relation to gender one surprising discovery was that certain girls in the study feared getting pregnant more than getting HIV/AIDS. The study finally suggests that these findings are of significance for designing future media initiatives in relation to HIV/AIDS.
- Full Text:
- Date Issued: 2005
An investigation of information security in small and medium enterprises (SME's) in the Eastern Cape
- Authors: Upfold, Christopher Tennant
- Date: 2005
- Subjects: Small business -- South Africa -- Eastern Cape Computer security -- South Africa Information technology -- South Africa -- Eastern Cape Management information systems -- South Africa -- Eastern Cape Computer security -- Standards -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:727 , http://hdl.handle.net/10962/d1003847
- Description: Small and Medium Enterprises (SME’s) embrace a wide range of information systems and technology that range from basic bookkeeping and general purpose office packages, through to advanced E-Business Web portals and Electronic Data Interchange (EDI). A survey, based on SABS ISO/IEC 17799 was administered to a select number of SME’s in the services sector, in the Eastern Cape. The results of the survey revealed that the level of information security awareness amongst SME leadership is as diverse as the state of practice of their information systems and technology. Although a minority of SME’s do embrace security frameworks such as SABS ISO/IEC 17799 or the International equivalent, BS7799, most SME leaders have not heard of security standards, and see information security as a technical intervention designed to address virus threats and data backups. Furthermore, there are several “stripped-down” standards and guidelines for SME’s, based mostly on SABS ISO/IEC 17799, but designed as streamlined, more easily implemented options. Again, these “lighter” frameworks are scarcely used and largely unknown by SME’s. Far from blaming SME leadership for not understanding the critical issues surrounding information security, the research concludes that SME leadership need to engage, understand and implement formal information security processes, failing which their organisations may be severely impacted by inadvertent threats / deliberate attacks on their information systems which could ultimately lead to business failure.
- Full Text:
- Date Issued: 2005
An investigation of information security in small and medium enterprises (SME's) in the Eastern Cape
- Authors: Upfold, Christopher Tennant
- Date: 2005
- Subjects: Small business -- South Africa -- Eastern Cape Computer security -- South Africa Information technology -- South Africa -- Eastern Cape Management information systems -- South Africa -- Eastern Cape Computer security -- Standards -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:727 , http://hdl.handle.net/10962/d1003847
- Description: Small and Medium Enterprises (SME’s) embrace a wide range of information systems and technology that range from basic bookkeeping and general purpose office packages, through to advanced E-Business Web portals and Electronic Data Interchange (EDI). A survey, based on SABS ISO/IEC 17799 was administered to a select number of SME’s in the services sector, in the Eastern Cape. The results of the survey revealed that the level of information security awareness amongst SME leadership is as diverse as the state of practice of their information systems and technology. Although a minority of SME’s do embrace security frameworks such as SABS ISO/IEC 17799 or the International equivalent, BS7799, most SME leaders have not heard of security standards, and see information security as a technical intervention designed to address virus threats and data backups. Furthermore, there are several “stripped-down” standards and guidelines for SME’s, based mostly on SABS ISO/IEC 17799, but designed as streamlined, more easily implemented options. Again, these “lighter” frameworks are scarcely used and largely unknown by SME’s. Far from blaming SME leadership for not understanding the critical issues surrounding information security, the research concludes that SME leadership need to engage, understand and implement formal information security processes, failing which their organisations may be severely impacted by inadvertent threats / deliberate attacks on their information systems which could ultimately lead to business failure.
- Full Text:
- Date Issued: 2005