'n Analise van die gebruik van satire in enkele tekste van Marlene van Niekerk
- Authors: Stoltz, Wessel
- Date: 2011
- Subjects: Van Niekerk, Marlene -- Criticism and interpretation , Satire
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:8477 , http://hdl.handle.net/10948/d1018804
- Description: Through the ages satirists have exposed and ridiculed certain malpractices in society in their texts. They have often done so in a language filled with irony and exaggeration. For the purpose of this dissertation I wish to focus on three texts by Marlene van Niekerk, the eminent Afrikaans author, and analyse the way in which she uses satire to comment particularly on contemporary South African society and address issues such as violence, the 2010 World Cup, corruption and violence against women and children. The three texts under discussion are the two lengthy poems, ―Suid Afrika and ―Brief aan president Motlanthe [―Letter to President Motlanthe] and her play Die kortstondige raklewe van Anastacia W [The brief shelf-life of Anastacia W]. She bases her writings on real life incidents and events written about in the newspapers and these clippings serve as intertexts for her critique of society.
- Full Text:
- Date Issued: 2011
- Authors: Stoltz, Wessel
- Date: 2011
- Subjects: Van Niekerk, Marlene -- Criticism and interpretation , Satire
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:8477 , http://hdl.handle.net/10948/d1018804
- Description: Through the ages satirists have exposed and ridiculed certain malpractices in society in their texts. They have often done so in a language filled with irony and exaggeration. For the purpose of this dissertation I wish to focus on three texts by Marlene van Niekerk, the eminent Afrikaans author, and analyse the way in which she uses satire to comment particularly on contemporary South African society and address issues such as violence, the 2010 World Cup, corruption and violence against women and children. The three texts under discussion are the two lengthy poems, ―Suid Afrika and ―Brief aan president Motlanthe [―Letter to President Motlanthe] and her play Die kortstondige raklewe van Anastacia W [The brief shelf-life of Anastacia W]. She bases her writings on real life incidents and events written about in the newspapers and these clippings serve as intertexts for her critique of society.
- Full Text:
- Date Issued: 2011
Increasing the competitve advantage of the smaller short-term insurance intermediary
- Authors: Stumke, Francois
- Date: 2011
- Subjects: Insurance -- South Africa , Insurance companies -- South Africa -- Finance , Financial services industry -- Marketing
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:9372 , http://hdl.handle.net/10948/d1012447 , Insurance -- South Africa , Insurance companies -- South Africa -- Finance , Financial services industry -- Marketing
- Description: In a fragmented and competitive industry, it is likely for the smaller roleplayer to be challenged in terms of competitiveness and market share. It is, therefore, important for the smaller organisation to etch its position in the market, by increasing its competitive advantage. In a milieu where there is a shift in distribution dynamics and the balance of power, and an increase in consumerism, the need to react is a pressing issue to be addressed by the smaller player. In the context of this study, the small and medium-low-impact intermediary in the South African short-term insurance industry is under pressure from, among others, direct distribution models and the increasing volume of the medium-high and high-impact intermediaries. It is determined in this study that the intermediary is challenged by all five market forces, as postulated by Porter in the model of “the five forces that shape industry competition”. The intermediary organisation must adopt positioning strategies, and differentiate its offering, in order to stay relevant in the industry. The short-term insurance intermediate industry is classified as a service industry; and therefore, it has unique factors to attend to. The positioning and differentiation strategies must be implemented without compromising the service quality levels. Furthermore, in the development of positioning strategies, it is essential to investigate the traditional marketing mix, while amplifying the mix with contemporary views of the subject. These form the basis of the positioning strategy; and from there, differentiation offerings can be shaped. A survey analysis of the product suppliers aims to identify the most important strategies for success. The study relies on the industry knowledge of the executives of these organisations, to steer the positioning strategies of the intermediary to fit in with their own positioning in the marketplace.
- Full Text:
- Date Issued: 2011
- Authors: Stumke, Francois
- Date: 2011
- Subjects: Insurance -- South Africa , Insurance companies -- South Africa -- Finance , Financial services industry -- Marketing
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:9372 , http://hdl.handle.net/10948/d1012447 , Insurance -- South Africa , Insurance companies -- South Africa -- Finance , Financial services industry -- Marketing
- Description: In a fragmented and competitive industry, it is likely for the smaller roleplayer to be challenged in terms of competitiveness and market share. It is, therefore, important for the smaller organisation to etch its position in the market, by increasing its competitive advantage. In a milieu where there is a shift in distribution dynamics and the balance of power, and an increase in consumerism, the need to react is a pressing issue to be addressed by the smaller player. In the context of this study, the small and medium-low-impact intermediary in the South African short-term insurance industry is under pressure from, among others, direct distribution models and the increasing volume of the medium-high and high-impact intermediaries. It is determined in this study that the intermediary is challenged by all five market forces, as postulated by Porter in the model of “the five forces that shape industry competition”. The intermediary organisation must adopt positioning strategies, and differentiate its offering, in order to stay relevant in the industry. The short-term insurance intermediate industry is classified as a service industry; and therefore, it has unique factors to attend to. The positioning and differentiation strategies must be implemented without compromising the service quality levels. Furthermore, in the development of positioning strategies, it is essential to investigate the traditional marketing mix, while amplifying the mix with contemporary views of the subject. These form the basis of the positioning strategy; and from there, differentiation offerings can be shaped. A survey analysis of the product suppliers aims to identify the most important strategies for success. The study relies on the industry knowledge of the executives of these organisations, to steer the positioning strategies of the intermediary to fit in with their own positioning in the marketplace.
- Full Text:
- Date Issued: 2011
Mutational analysis of the PacC binding sites within the aflR promoter in Aspergillus flavus
- Authors: Suleman, Essa
- Date: 2011
- Subjects: Mutation (Biology) , Genetic regulation , Proteins -- Synthesis , Microbiological synthesis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10336 , http://hdl.handle.net/10948/d1012683 , Mutation (Biology) , Genetic regulation , Proteins -- Synthesis , Microbiological synthesis
- Description: It is generally known that media containing simple sugars (sucrose, glucose) and organic nitrogen sources (ammonium) when buffered to acidic pH stimulates aflatoxin production in Aspergillus flavus & A. parasiticus while lactose, nitrate and an alkaline pH inhibit aflatoxin biosynthesis. It has been shown that pH of the growth medium is the most important regulatory factor for aflatoxin biosynthesis since media containing stimulatory carbon and/or nitrogen sources (sucrose and ammonia) do not enhance aflatoxin (or sterigmatocystin) production at alkaline pH. RNA interference (in A. flavus) of the pH regulatory transcription factor, PacC, resulted in aflatoxin production under acidic and alkaline pH conditions whilst wildtype Aspergillus flavus produced aflatoxins only under acidic conditions. This conclusively proved that PacC negatively regulates aflatoxin production at alkaline pH in A. flavus. However the exact mechanism involved in PacC repression of aflatoxin biosynthesis at alkaline pH still remains unknown. The AflR protein is essential for expression of several genes in the aflatoxin biosynthetic cluster. In the current study, sequence analysis of the aflR promoter indicated the presence of two putative PacC binding sites within the aflR promoter of A. flavus 3357WT located at positions -162 and -487 bp from the start codon. The presence of the PacC binding sites in the aflR promoter indicated a possible link between aflR expression and PacC regulation under alkaline conditions. Thus, in this study, it was hypothesized that at alkaline pH, PacC inhibits aflR expression by binding to one or both of the PacC binding sites within the aflR promoter. This in turn, would result in inhibition of aflatoxin biosynthesis since expression of several aflatoxin biosynthetic pathway genes is dependent on activation by AflR. The aim and objective of this study was to test the validity of this hypothesis i.e. that at alkaline pH PacC binds to one or both of its recognition sites within the aflR promoter thereby inhibiting aflR expression which subsequently would result in inhibition of aflatoxin biosynthesis. This was done by first mutating each individual and then both PacC binding sites in the A. flavus 3357 aflR promoter via Single-Joint PCR (SJ-PCR) and fusing the wildtype and each mutated aflR promoter to the Green Fluorescent Protein (gfp) gene and the trpC terminator to yield a functional expression vector. These constructs were then transformed into A. flavus 3357.5. Positive transformants were confirmed to express GFP by fluorescence microscopy and spectrofluorometry. Quantification of GFP protein levels of the various transformants in this study indicated that PacC negatively regulated aflR promoter activity at alkaline pH. RT-qPCR was performed on positive transformants after growth on SLS medium at acidic and alkaline pH to determine if PacC negatively regulated aflR promoter activity at alkaline pH and to determine whether PacC binds preferentially to one or both recognition sites within the aflR promoter. RT-qPCR analysis suggest that PacC binds non-preferentially to both recognition sites within the aflR promoter on sucrose and lactose media at alkaline pH, although mutation of PacC binding site 2 results in a slightly higher expression compared to mutation of PacC binding site 1. Increasing the concentration of an aflatoxin conducive nitrogen source stimulated aflR promoter activity but this was not sufficient to overcome negative regulation by PacC. It is generally known that repression of aflR expression results in repression of aflatoxin biosynthesis irrespective of pH. The results of this study strongly suggest that PacC negatively regulates aflR promoter activity at alkaline pH by binding to one or both PacC recognition sites within the aflR promoter. Since aflR promoter activity is repressed by PacC at alkaline pH, this substantiates the hypothesis that PacC represses aflatoxin biosynthesis by inhibiting expression of aflR. Furthermore, the results of this study indicated that there may be some PacC protein present in the active form at acidic pH irrespective of the carbon source and nitrogen source used in the growth medium. RT-qPCR analysis indicated that any active PacC present at acidic pH may cause repression of the aflR promoter based on the position of the PacC binding site relative to the aflR start codon, although it appears that PacC may have a higher affinity for PacC binding site 2 (which is closer to the aflR start codon).
- Full Text:
- Date Issued: 2011
- Authors: Suleman, Essa
- Date: 2011
- Subjects: Mutation (Biology) , Genetic regulation , Proteins -- Synthesis , Microbiological synthesis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10336 , http://hdl.handle.net/10948/d1012683 , Mutation (Biology) , Genetic regulation , Proteins -- Synthesis , Microbiological synthesis
- Description: It is generally known that media containing simple sugars (sucrose, glucose) and organic nitrogen sources (ammonium) when buffered to acidic pH stimulates aflatoxin production in Aspergillus flavus & A. parasiticus while lactose, nitrate and an alkaline pH inhibit aflatoxin biosynthesis. It has been shown that pH of the growth medium is the most important regulatory factor for aflatoxin biosynthesis since media containing stimulatory carbon and/or nitrogen sources (sucrose and ammonia) do not enhance aflatoxin (or sterigmatocystin) production at alkaline pH. RNA interference (in A. flavus) of the pH regulatory transcription factor, PacC, resulted in aflatoxin production under acidic and alkaline pH conditions whilst wildtype Aspergillus flavus produced aflatoxins only under acidic conditions. This conclusively proved that PacC negatively regulates aflatoxin production at alkaline pH in A. flavus. However the exact mechanism involved in PacC repression of aflatoxin biosynthesis at alkaline pH still remains unknown. The AflR protein is essential for expression of several genes in the aflatoxin biosynthetic cluster. In the current study, sequence analysis of the aflR promoter indicated the presence of two putative PacC binding sites within the aflR promoter of A. flavus 3357WT located at positions -162 and -487 bp from the start codon. The presence of the PacC binding sites in the aflR promoter indicated a possible link between aflR expression and PacC regulation under alkaline conditions. Thus, in this study, it was hypothesized that at alkaline pH, PacC inhibits aflR expression by binding to one or both of the PacC binding sites within the aflR promoter. This in turn, would result in inhibition of aflatoxin biosynthesis since expression of several aflatoxin biosynthetic pathway genes is dependent on activation by AflR. The aim and objective of this study was to test the validity of this hypothesis i.e. that at alkaline pH PacC binds to one or both of its recognition sites within the aflR promoter thereby inhibiting aflR expression which subsequently would result in inhibition of aflatoxin biosynthesis. This was done by first mutating each individual and then both PacC binding sites in the A. flavus 3357 aflR promoter via Single-Joint PCR (SJ-PCR) and fusing the wildtype and each mutated aflR promoter to the Green Fluorescent Protein (gfp) gene and the trpC terminator to yield a functional expression vector. These constructs were then transformed into A. flavus 3357.5. Positive transformants were confirmed to express GFP by fluorescence microscopy and spectrofluorometry. Quantification of GFP protein levels of the various transformants in this study indicated that PacC negatively regulated aflR promoter activity at alkaline pH. RT-qPCR was performed on positive transformants after growth on SLS medium at acidic and alkaline pH to determine if PacC negatively regulated aflR promoter activity at alkaline pH and to determine whether PacC binds preferentially to one or both recognition sites within the aflR promoter. RT-qPCR analysis suggest that PacC binds non-preferentially to both recognition sites within the aflR promoter on sucrose and lactose media at alkaline pH, although mutation of PacC binding site 2 results in a slightly higher expression compared to mutation of PacC binding site 1. Increasing the concentration of an aflatoxin conducive nitrogen source stimulated aflR promoter activity but this was not sufficient to overcome negative regulation by PacC. It is generally known that repression of aflR expression results in repression of aflatoxin biosynthesis irrespective of pH. The results of this study strongly suggest that PacC negatively regulates aflR promoter activity at alkaline pH by binding to one or both PacC recognition sites within the aflR promoter. Since aflR promoter activity is repressed by PacC at alkaline pH, this substantiates the hypothesis that PacC represses aflatoxin biosynthesis by inhibiting expression of aflR. Furthermore, the results of this study indicated that there may be some PacC protein present in the active form at acidic pH irrespective of the carbon source and nitrogen source used in the growth medium. RT-qPCR analysis indicated that any active PacC present at acidic pH may cause repression of the aflR promoter based on the position of the PacC binding site relative to the aflR start codon, although it appears that PacC may have a higher affinity for PacC binding site 2 (which is closer to the aflR start codon).
- Full Text:
- Date Issued: 2011
Studies in marine quinone chemistry
- Authors: Sunassee, Suthananda Naidu
- Date: 2011
- Subjects: Quinone Marine natural products Marine invertebrates Marine pharmacology Cancer -- Treatment
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4355 , http://hdl.handle.net/10962/d1005020
- Description: This thesis is divided into two parts and the rationale of the research conducted is based on the cytotoxicity of the prenylated quinones 1.24-1.29, isolated from the South African nudibranch Leminda millecra, against oesophageal cancer cells. The first part (Chapters 2 and 3) of the thesis initially documents the distribution of cytotoxic and antioxidant prenylated quinones and hydroquinones in the marine environment. We have been able to show, for the first time, that these compounds can be divided into eight structural classes closely related to their phyletic distribution. Secondly, we attempted to synthesize the two marine natural products 1.24 and 1.26 in an effort to contribute to an ongoing collaborative search with the Division of Medical Biochemistry at the University of Cape Town for new compounds with anti-oesophageal cancer activity. Accordingly, we followed the published synthetic procedure for 1.26 and, although we were unable to reproduce the reported results, we have generated five new prenylated quinone analogues 3.53-3.55, 3.63 and 3.71, which are a potentially viable addition to our ongoing structure-activity relationship (SAR) studies. Moreover, we embarked on a 7Li NMR mechanistic study for the synthesis of 3.2 from 3.1 which rewarded us with an improved and reproducible methodology for this crucial reaction that is detailed in Chapter 3. The second part of this thesis (Chapters 4 and 5) is concerned with a synthetic, structural, electrochemical and biological exploration of the 1,4-naphthoquinone nucleus as a primary pharmacophore in our search for new chemical entities which can induce apoptosis in oesophageal cancer cells, thus contributing to our overall ongoing SAR study in this class of compounds. Seven new naphthoquinone derivatves (4.19, 4.30, 4.31, 4.33 and 4.46-4.48) of the natural products 2-deoxylapachol (2.44), lapachol (4.1) and β-lapachone (5.2) were synthesized and 2-(1`-hydroxy-`-phenylmethyl)-1,4-naphthoquinone (4.29) was found to be the most cytotoxic (IC50 1.5 μM) against the oesophageal cancer cell line WHCO1, while 5.2, which is currently in phase II clinical trials as an anticancer drug, was found to be similarly active (IC50 1.6 μM). Electrochemical investigations of the redox properties of the benzylic alcohol derivatives 4.29-4.31 indicated a higher reduction potential compared to their oxidized counterparts 4.45-4.48, and this finding has been correlated to the increased activity of 4.29-4.31 against the WHCO1 cell line. Additionally, 4.29 is synthetically more accessible than either 1.26 or 5.2 and potentially a lead compound in our search for new and more effective chemotherapeutic agents against oesophageal cancer
- Full Text:
- Date Issued: 2011
- Authors: Sunassee, Suthananda Naidu
- Date: 2011
- Subjects: Quinone Marine natural products Marine invertebrates Marine pharmacology Cancer -- Treatment
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4355 , http://hdl.handle.net/10962/d1005020
- Description: This thesis is divided into two parts and the rationale of the research conducted is based on the cytotoxicity of the prenylated quinones 1.24-1.29, isolated from the South African nudibranch Leminda millecra, against oesophageal cancer cells. The first part (Chapters 2 and 3) of the thesis initially documents the distribution of cytotoxic and antioxidant prenylated quinones and hydroquinones in the marine environment. We have been able to show, for the first time, that these compounds can be divided into eight structural classes closely related to their phyletic distribution. Secondly, we attempted to synthesize the two marine natural products 1.24 and 1.26 in an effort to contribute to an ongoing collaborative search with the Division of Medical Biochemistry at the University of Cape Town for new compounds with anti-oesophageal cancer activity. Accordingly, we followed the published synthetic procedure for 1.26 and, although we were unable to reproduce the reported results, we have generated five new prenylated quinone analogues 3.53-3.55, 3.63 and 3.71, which are a potentially viable addition to our ongoing structure-activity relationship (SAR) studies. Moreover, we embarked on a 7Li NMR mechanistic study for the synthesis of 3.2 from 3.1 which rewarded us with an improved and reproducible methodology for this crucial reaction that is detailed in Chapter 3. The second part of this thesis (Chapters 4 and 5) is concerned with a synthetic, structural, electrochemical and biological exploration of the 1,4-naphthoquinone nucleus as a primary pharmacophore in our search for new chemical entities which can induce apoptosis in oesophageal cancer cells, thus contributing to our overall ongoing SAR study in this class of compounds. Seven new naphthoquinone derivatves (4.19, 4.30, 4.31, 4.33 and 4.46-4.48) of the natural products 2-deoxylapachol (2.44), lapachol (4.1) and β-lapachone (5.2) were synthesized and 2-(1`-hydroxy-`-phenylmethyl)-1,4-naphthoquinone (4.29) was found to be the most cytotoxic (IC50 1.5 μM) against the oesophageal cancer cell line WHCO1, while 5.2, which is currently in phase II clinical trials as an anticancer drug, was found to be similarly active (IC50 1.6 μM). Electrochemical investigations of the redox properties of the benzylic alcohol derivatives 4.29-4.31 indicated a higher reduction potential compared to their oxidized counterparts 4.45-4.48, and this finding has been correlated to the increased activity of 4.29-4.31 against the WHCO1 cell line. Additionally, 4.29 is synthetically more accessible than either 1.26 or 5.2 and potentially a lead compound in our search for new and more effective chemotherapeutic agents against oesophageal cancer
- Full Text:
- Date Issued: 2011
Factors influencing improvements of productivity at Ford Struandale Engine Plant
- Authors: Sundu, Zamandile Oscar
- Date: 2011
- Subjects: Automobile industry and trade -- Capital productivity -- South Africa , Lean manufacturing -- South Africa , Automobile factories
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8651 , http://hdl.handle.net/10948/1377 , Automobile industry and trade -- Capital productivity -- South Africa , Lean manufacturing -- South Africa , Automobile factories
- Description: This treatise investigates the underlying factors influencing productivity at Ford Struandale Engine Plant.
- Full Text:
- Date Issued: 2011
- Authors: Sundu, Zamandile Oscar
- Date: 2011
- Subjects: Automobile industry and trade -- Capital productivity -- South Africa , Lean manufacturing -- South Africa , Automobile factories
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8651 , http://hdl.handle.net/10948/1377 , Automobile industry and trade -- Capital productivity -- South Africa , Lean manufacturing -- South Africa , Automobile factories
- Description: This treatise investigates the underlying factors influencing productivity at Ford Struandale Engine Plant.
- Full Text:
- Date Issued: 2011
Talent management by the East London IDZ to lever the competitive edge
- Authors: Swana, Leonard Sandile
- Date: 2011
- Subjects: Investments, Foreign , Ability -- Economic aspects -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8795 , http://hdl.handle.net/10948/d1015982
- Description: Talent in the field of attraction of Foreign Direct Investment (FDI) is scarce in South Africa, especially in the Eastern Cape, due to the history of exclusion of South Africa from world economic participation, prior to 1994. In order for the ELIDZ to achieve its mandate of FDI attraction, job creation and economic growth, talent management has to be a key aspect in the boardroom discussions and strategic planning sessions. The purpose of this study is to investigate the effective use of talent management by the East London IDZ to leverage the competitive edge of the ELIDZ in the business of attracting Foreign Direct Investment into South Africa, and also of competing against the world’s Economic Processing Zones (EPZ’s) and Free Trade Zones (FTZ’s). According to Holbeche (2009:166), talent consists of those individuals who can make a difference to organisational performance, either through their immediate contribution, or, in the longer term, by demonstrating the highest level of potential. For the purpose of this study, talent management is defined as the systematic attraction, identification, development, engagement / retention and deployment of those individuals with high potential who are of particular value to an organisation. The literature reviewed pointed out very clearly that organisations that have properly developed, implemented and managed talent management strategies enjoy high levels of motivation, innovation and creativity, lesser levels of staff turn-over, high employee performance, superior productivity and mostly a competitive advantage in their league. The East London IDZ study response enjoyed a rate of 40 out of 54 employees who received questionnaires and returned them by the due date. The responses represented a total of 74.1 percent, and this level of response is attributed to the fact that by the end of May 2011, the ELIDZ had just undergone an Organisational Re-structuring. The current status quo of the ELIDZ, based on the views as reflected in this study ,is very compromising for an organisation that aims to compete in the global space for the attraction and retention of foreign direct investment (FDI’s), and the global competitiveness based on the talent available. The overall picture depicted by the empirical results suggests that there are critical gaps for which the ELIDZ Executive Management and Board need to craft solutions, if competitiveness is going to be taken seriously in the near and long-term future.
- Full Text:
- Date Issued: 2011
- Authors: Swana, Leonard Sandile
- Date: 2011
- Subjects: Investments, Foreign , Ability -- Economic aspects -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8795 , http://hdl.handle.net/10948/d1015982
- Description: Talent in the field of attraction of Foreign Direct Investment (FDI) is scarce in South Africa, especially in the Eastern Cape, due to the history of exclusion of South Africa from world economic participation, prior to 1994. In order for the ELIDZ to achieve its mandate of FDI attraction, job creation and economic growth, talent management has to be a key aspect in the boardroom discussions and strategic planning sessions. The purpose of this study is to investigate the effective use of talent management by the East London IDZ to leverage the competitive edge of the ELIDZ in the business of attracting Foreign Direct Investment into South Africa, and also of competing against the world’s Economic Processing Zones (EPZ’s) and Free Trade Zones (FTZ’s). According to Holbeche (2009:166), talent consists of those individuals who can make a difference to organisational performance, either through their immediate contribution, or, in the longer term, by demonstrating the highest level of potential. For the purpose of this study, talent management is defined as the systematic attraction, identification, development, engagement / retention and deployment of those individuals with high potential who are of particular value to an organisation. The literature reviewed pointed out very clearly that organisations that have properly developed, implemented and managed talent management strategies enjoy high levels of motivation, innovation and creativity, lesser levels of staff turn-over, high employee performance, superior productivity and mostly a competitive advantage in their league. The East London IDZ study response enjoyed a rate of 40 out of 54 employees who received questionnaires and returned them by the due date. The responses represented a total of 74.1 percent, and this level of response is attributed to the fact that by the end of May 2011, the ELIDZ had just undergone an Organisational Re-structuring. The current status quo of the ELIDZ, based on the views as reflected in this study ,is very compromising for an organisation that aims to compete in the global space for the attraction and retention of foreign direct investment (FDI’s), and the global competitiveness based on the talent available. The overall picture depicted by the empirical results suggests that there are critical gaps for which the ELIDZ Executive Management and Board need to craft solutions, if competitiveness is going to be taken seriously in the near and long-term future.
- Full Text:
- Date Issued: 2011
A forecasting model for photovoltaic module energy production
- Authors: Swanepoel, Paul
- Date: 2011
- Subjects: Photovoltaic power systems -- Forecasting
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:10563 , http://hdl.handle.net/10948/1420 , Photovoltaic power systems -- Forecasting
- Description: Energy is of concern for governments and economies all over the world. As conventional methods of energy production are facing the prospect of depleting fossil fuel reserves, economies are facing energy risks. With this tension, various threats arise in terms of energy supply security. A shift from intensive fossil fuel consumption to alternative energy consumption combined with the calculated use of fossil fuels needs to be implemented. Using the energy radiated from the sun and converted to electricity through photovoltaic energy conversion is one of the alternative and renewable sources to address the limited fossil fuel dilemma. South Africa receives an abundance of sunlight irradiance, but limited knowledge of the implementation and possible energy yield of photovoltaic energy production in South Africa is available. Photovoltaic energy yield knowledge is vital in applications for farms, rural areas and remote transmitting devices where the construction of electricity grids are not cost effective. In this study various meteorological and energy parameters about photovoltaics were captured in Port Elizabeth (South Africa) and analyzed, with data being recorded every few seconds. A model for mean daily photovoltaic power output was developed and the relationships between the independent variables analyzed. A model was developed that can forecast mean daily photovoltaic power output using only temperature derived variables and time. The mean daily photovoltaic power model can then easily be used to forecast daily photovoltaic energy output using the number of sunlight seconds in a given day.
- Full Text:
- Date Issued: 2011
- Authors: Swanepoel, Paul
- Date: 2011
- Subjects: Photovoltaic power systems -- Forecasting
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:10563 , http://hdl.handle.net/10948/1420 , Photovoltaic power systems -- Forecasting
- Description: Energy is of concern for governments and economies all over the world. As conventional methods of energy production are facing the prospect of depleting fossil fuel reserves, economies are facing energy risks. With this tension, various threats arise in terms of energy supply security. A shift from intensive fossil fuel consumption to alternative energy consumption combined with the calculated use of fossil fuels needs to be implemented. Using the energy radiated from the sun and converted to electricity through photovoltaic energy conversion is one of the alternative and renewable sources to address the limited fossil fuel dilemma. South Africa receives an abundance of sunlight irradiance, but limited knowledge of the implementation and possible energy yield of photovoltaic energy production in South Africa is available. Photovoltaic energy yield knowledge is vital in applications for farms, rural areas and remote transmitting devices where the construction of electricity grids are not cost effective. In this study various meteorological and energy parameters about photovoltaics were captured in Port Elizabeth (South Africa) and analyzed, with data being recorded every few seconds. A model for mean daily photovoltaic power output was developed and the relationships between the independent variables analyzed. A model was developed that can forecast mean daily photovoltaic power output using only temperature derived variables and time. The mean daily photovoltaic power model can then easily be used to forecast daily photovoltaic energy output using the number of sunlight seconds in a given day.
- Full Text:
- Date Issued: 2011
Leveraging shop floor management to create an organization of self managed people at SA canopy
- Authors: Swart, Jacques
- Date: 2011
- Subjects: Industrial management -- South Africa , Production management -- South Africa , Teams in the workplace -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8785 , http://hdl.handle.net/10948/d1013753
- Description: All world class manufacturing organizations have shop floor management in place. Shop floor management principles and tools are utilised to plan and to react in out of control conditions. Shop floor management is also utilised to involve people in decision making and to encourage continuous improvement. Various shop floor management principles exist and are applied differently depending on the nature of the business, however all these principles are present in all the companies researched. SA Canopy currently applies very little or no shop floor management principles. To be able to achieve its objectives and mission set by the new shareholders, shop floor excellence must be achieved. The objective of the study was to establish shop floor management principles utilised by the automotive industry as well as best in class organizations. To achieve this, a comprehensive literature study was performed on shop floor management. A questionnaire and audit schedule was designed based on guidelines in the literature study in order to establish what shop floor management principles are being utilised in the industry. The researcher used random sampling methods in distributing the questionnaire. An internal audit of the companies was conducted to support the responses in from the questionnaires. The opinions of the various respondents were compared with the guidelines provided in the literature survey in order to indentify shop floor management principles which would be suitable for SA Canopy. The following main recommendations were made: In order for SA canopy to achieve its objectives the company needs to develop a mission statement for everyone to work towards; SA Canopy needs to become more customer and supplier orientated. This will improve the overall performance of the business in respect of cost, quality and output; It is important that SA Canopy promotes teamwork so as to create a culture of continuous improvement; Problem solving skills need to be developed in the organization; Roles of Supervision need to be clearly defined and development programmes need to be put in place for supervision; A management process similar to the “Plan, Do, Check, Action “needs to be put in place to ensure effective actioning and monitoring of improvements and performance of stakeholders.
- Full Text:
- Date Issued: 2011
- Authors: Swart, Jacques
- Date: 2011
- Subjects: Industrial management -- South Africa , Production management -- South Africa , Teams in the workplace -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8785 , http://hdl.handle.net/10948/d1013753
- Description: All world class manufacturing organizations have shop floor management in place. Shop floor management principles and tools are utilised to plan and to react in out of control conditions. Shop floor management is also utilised to involve people in decision making and to encourage continuous improvement. Various shop floor management principles exist and are applied differently depending on the nature of the business, however all these principles are present in all the companies researched. SA Canopy currently applies very little or no shop floor management principles. To be able to achieve its objectives and mission set by the new shareholders, shop floor excellence must be achieved. The objective of the study was to establish shop floor management principles utilised by the automotive industry as well as best in class organizations. To achieve this, a comprehensive literature study was performed on shop floor management. A questionnaire and audit schedule was designed based on guidelines in the literature study in order to establish what shop floor management principles are being utilised in the industry. The researcher used random sampling methods in distributing the questionnaire. An internal audit of the companies was conducted to support the responses in from the questionnaires. The opinions of the various respondents were compared with the guidelines provided in the literature survey in order to indentify shop floor management principles which would be suitable for SA Canopy. The following main recommendations were made: In order for SA canopy to achieve its objectives the company needs to develop a mission statement for everyone to work towards; SA Canopy needs to become more customer and supplier orientated. This will improve the overall performance of the business in respect of cost, quality and output; It is important that SA Canopy promotes teamwork so as to create a culture of continuous improvement; Problem solving skills need to be developed in the organization; Roles of Supervision need to be clearly defined and development programmes need to be put in place for supervision; A management process similar to the “Plan, Do, Check, Action “needs to be put in place to ensure effective actioning and monitoring of improvements and performance of stakeholders.
- Full Text:
- Date Issued: 2011
The legal framework pertaining to selected segments of the financial market
- Authors: Swart, Lynette
- Date: 2011
- Subjects: Financial institutions -- Law and legislation -- South Africa , Finance, Public -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10216 , http://hdl.handle.net/10948/1425 , Financial institutions -- Law and legislation -- South Africa , Finance, Public -- Law and legislation -- South Africa
- Description: A sound financial system is the cornerstone of any country‘s economy. As South Africa has always been deemed to have a sound legal framework pertaining to the financial market, it has never faced the situation where it had to extensively review its entire legal framework. However, the recent global economic meltdown left policy makers, internationally, questioning the soundness of their financial systems and South Africa has been no exception. This dissertation provides an overview of the legal framework pertaining to selected segments of the financial market. This legal framework is then tested against certain selected issues highlighted by the global economic meltdown in order to establish whether it was and still is sufficiently robust to effectively negotiate these challenges. In order to deal with the selected segments of the legal framework pertaining to the financial market as comprehensively as possible, the selected segments for the purposes of this dissertation include the capital market, the money market and the derivative market. This dissertation also evaluates the impact of other recent domestic developments pertaining to securities settlement in South Africa. These developments include the recently promulgated Companies Act 71 of 2008 and the currently drafted Participant Failure Manual. This dissertation suggests that the Companies Act 71 of 2008 will have a significant impact on securities settlement. It is recommended that companies, holders of uncertificated securities and holders of beneficial interests in uncertificated securities familiarise themselves with their revised rights and obligations in order to, amongst other things, ensure compliance with this new legislative framework. This dissertation reveals that, even though our financial system has been found to be fundamentally sound and thus far have dealt with the global economic meltdown quite well, legislative reform to conform to international best practice is imperative. It is recommended that policy makers should strive to ensure that the South African legal framework pertaining to the financial market is sufficiently aligned with the principles, methodologies and recommendations as provided for by the international institutions providing best practice. The highlighted areas of legislative reform include the legal frameworks pertaining to credit rating agencies, investor due diligence, ix crisis management tools, compensation structures, accounting and valuations standards, issuer transparency, market transparency and risk management. This dissertation highlights that a significant amount of legislative amendments and endorsements by the relevant regulators and the Master of the Court are required for the successful integration of the Participant Failure Manual into the legal framework pertaining to the financial market. If, when and how the notion of Participant Failure will be accepted and regulated by the relevant regulators, without creating a conflict of interest, remains a question to be answered.
- Full Text:
- Date Issued: 2011
- Authors: Swart, Lynette
- Date: 2011
- Subjects: Financial institutions -- Law and legislation -- South Africa , Finance, Public -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10216 , http://hdl.handle.net/10948/1425 , Financial institutions -- Law and legislation -- South Africa , Finance, Public -- Law and legislation -- South Africa
- Description: A sound financial system is the cornerstone of any country‘s economy. As South Africa has always been deemed to have a sound legal framework pertaining to the financial market, it has never faced the situation where it had to extensively review its entire legal framework. However, the recent global economic meltdown left policy makers, internationally, questioning the soundness of their financial systems and South Africa has been no exception. This dissertation provides an overview of the legal framework pertaining to selected segments of the financial market. This legal framework is then tested against certain selected issues highlighted by the global economic meltdown in order to establish whether it was and still is sufficiently robust to effectively negotiate these challenges. In order to deal with the selected segments of the legal framework pertaining to the financial market as comprehensively as possible, the selected segments for the purposes of this dissertation include the capital market, the money market and the derivative market. This dissertation also evaluates the impact of other recent domestic developments pertaining to securities settlement in South Africa. These developments include the recently promulgated Companies Act 71 of 2008 and the currently drafted Participant Failure Manual. This dissertation suggests that the Companies Act 71 of 2008 will have a significant impact on securities settlement. It is recommended that companies, holders of uncertificated securities and holders of beneficial interests in uncertificated securities familiarise themselves with their revised rights and obligations in order to, amongst other things, ensure compliance with this new legislative framework. This dissertation reveals that, even though our financial system has been found to be fundamentally sound and thus far have dealt with the global economic meltdown quite well, legislative reform to conform to international best practice is imperative. It is recommended that policy makers should strive to ensure that the South African legal framework pertaining to the financial market is sufficiently aligned with the principles, methodologies and recommendations as provided for by the international institutions providing best practice. The highlighted areas of legislative reform include the legal frameworks pertaining to credit rating agencies, investor due diligence, ix crisis management tools, compensation structures, accounting and valuations standards, issuer transparency, market transparency and risk management. This dissertation highlights that a significant amount of legislative amendments and endorsements by the relevant regulators and the Master of the Court are required for the successful integration of the Participant Failure Manual into the legal framework pertaining to the financial market. If, when and how the notion of Participant Failure will be accepted and regulated by the relevant regulators, without creating a conflict of interest, remains a question to be answered.
- Full Text:
- Date Issued: 2011
Community participation and food security in rural Zimbabwe: the case of Marange area in Mutare district
- Authors: Swikepi, Chiedzwa
- Date: 2011
- Subjects: Community development , Rural development projects -- Zimbabwe -- Citizen participation , Community development -- Zimbabwe -- Citizen participation , Rural development -- Zimbabwe , Food security -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11845 , http://hdl.handle.net/10353/d1007303 , Community development , Rural development projects -- Zimbabwe -- Citizen participation , Community development -- Zimbabwe -- Citizen participation , Rural development -- Zimbabwe , Food security -- Zimbabwe
- Description: The chief purpose of this study was to determine the role of the rural communities in the food security initiatives of the government in alleviating food shortages in the Marange communal area of Mutare district in Zimbabwe. The focus was on local community empowerment; ownership of food security initiatives by the communities; communities‟ independent analysis of needs and priorities; their involvement in designing food security programmes and the role of the government in linking with the communities. The data was gathered using a case study research design with the qualitative method being the main research approach. The primary data was obtained from focus group discussions held in three wards of Marange area and some in-depth interviews conducted with selected key informants. The findings indicate that the government designs food security strategies without considering the input of communities. The communities are introduced and expected to adopt these pre-conceived food security plans at the implementation stage. The results also show that poor community participation in the food security initiatives of the government, specifically during the initial stages, is a significant contributing factor to the continual shortages of food in the communal lands of Marange. It is the view of this study that unless community input in decision making at the planning and designing phases is given preference in the food security interventions of the government in rural Zimbabwe, food security will seldom be achieved. While the government has a significant role to play in food security measures, such interventions can make an important contribution if the use and development of community participation is made central to food shortage alleviation strategies. The principal conclusion of this study is that if food security is an intended ultimate goal in rural Zimbabwe, the communities must participate fully in the conceptualisation, planning, implementation, monitoring and evaluation of the government-initiated food security programmes.
- Full Text:
- Date Issued: 2011
- Authors: Swikepi, Chiedzwa
- Date: 2011
- Subjects: Community development , Rural development projects -- Zimbabwe -- Citizen participation , Community development -- Zimbabwe -- Citizen participation , Rural development -- Zimbabwe , Food security -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11845 , http://hdl.handle.net/10353/d1007303 , Community development , Rural development projects -- Zimbabwe -- Citizen participation , Community development -- Zimbabwe -- Citizen participation , Rural development -- Zimbabwe , Food security -- Zimbabwe
- Description: The chief purpose of this study was to determine the role of the rural communities in the food security initiatives of the government in alleviating food shortages in the Marange communal area of Mutare district in Zimbabwe. The focus was on local community empowerment; ownership of food security initiatives by the communities; communities‟ independent analysis of needs and priorities; their involvement in designing food security programmes and the role of the government in linking with the communities. The data was gathered using a case study research design with the qualitative method being the main research approach. The primary data was obtained from focus group discussions held in three wards of Marange area and some in-depth interviews conducted with selected key informants. The findings indicate that the government designs food security strategies without considering the input of communities. The communities are introduced and expected to adopt these pre-conceived food security plans at the implementation stage. The results also show that poor community participation in the food security initiatives of the government, specifically during the initial stages, is a significant contributing factor to the continual shortages of food in the communal lands of Marange. It is the view of this study that unless community input in decision making at the planning and designing phases is given preference in the food security interventions of the government in rural Zimbabwe, food security will seldom be achieved. While the government has a significant role to play in food security measures, such interventions can make an important contribution if the use and development of community participation is made central to food shortage alleviation strategies. The principal conclusion of this study is that if food security is an intended ultimate goal in rural Zimbabwe, the communities must participate fully in the conceptualisation, planning, implementation, monitoring and evaluation of the government-initiated food security programmes.
- Full Text:
- Date Issued: 2011
An investigation into the role of Traditional medicine in an era of biomedicine: Case of Qokolweni Location (KSDM), Eastern Cape, Republic of South Africa
- Authors: Tabi, Chama-James Tabenyang
- Date: 2011
- Subjects: Traditional medicine -- Biomedicine , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:18434 , http://hdl.handle.net/11260/d1007165
- Description: In most African communities, the concept of disease goes beyond physical and mental pain. To many, societal imbalance, bad-luck, poverty and misery, misfortune, continuous unemployment and a host of others are treated as diseases. Despite biomedical attempts to explain and treat diseases, an ancient system of healing (traditional medicine) continues to thrive in Africa. The World Health Organization (WHO) has since recognized and encouraged governments to accept traditional medicine as an alternative healthcare; to adopt healthcare policies that will promote traditional medicine. Despite this call for recognition, most governments are still reluctant to officially incorporate traditional healing into healthcare policies. Countries which have recognized the relevance of traditional medicine face greater challenges on modalities to control and include traditional medicine into mainstream healthcare. This study is concerned with the role and contribution of African traditional medicine to healthcare, in an era of biomedicine. It provides a public and self assessment of traditional healers. The study also raises concerns on the need for healthcare policies that will enhance cooperation between traditional healing and biomedicine. Information was obtained through the use of questionnaires, in depth and face-to-face interviews with respondents. The actual field research was conducted in Qokolweni location in the King Sabatha Dalindyebo (KSD) district municipality of Eastern Cape Province, Republic of South Africa. Findings reveal that traditional healers handle and manage complex hospital diagnosed health conditions. It also reveals that perceptions on disease aetiology influence health seeking behaviour. It is therefore necessary to understand the efforts of traditional healers in order to formulate healthcare policies that would officially involve them in the mainstream healthcare in South Africa. It is noticeable that traditional healing is not only limited to Qokolweni. It occurs mutatis mutandis else wherein the Eastern Cape and in the whole of South Africa.
- Full Text:
- Date Issued: 2011
- Authors: Tabi, Chama-James Tabenyang
- Date: 2011
- Subjects: Traditional medicine -- Biomedicine , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:18434 , http://hdl.handle.net/11260/d1007165
- Description: In most African communities, the concept of disease goes beyond physical and mental pain. To many, societal imbalance, bad-luck, poverty and misery, misfortune, continuous unemployment and a host of others are treated as diseases. Despite biomedical attempts to explain and treat diseases, an ancient system of healing (traditional medicine) continues to thrive in Africa. The World Health Organization (WHO) has since recognized and encouraged governments to accept traditional medicine as an alternative healthcare; to adopt healthcare policies that will promote traditional medicine. Despite this call for recognition, most governments are still reluctant to officially incorporate traditional healing into healthcare policies. Countries which have recognized the relevance of traditional medicine face greater challenges on modalities to control and include traditional medicine into mainstream healthcare. This study is concerned with the role and contribution of African traditional medicine to healthcare, in an era of biomedicine. It provides a public and self assessment of traditional healers. The study also raises concerns on the need for healthcare policies that will enhance cooperation between traditional healing and biomedicine. Information was obtained through the use of questionnaires, in depth and face-to-face interviews with respondents. The actual field research was conducted in Qokolweni location in the King Sabatha Dalindyebo (KSD) district municipality of Eastern Cape Province, Republic of South Africa. Findings reveal that traditional healers handle and manage complex hospital diagnosed health conditions. It also reveals that perceptions on disease aetiology influence health seeking behaviour. It is therefore necessary to understand the efforts of traditional healers in order to formulate healthcare policies that would officially involve them in the mainstream healthcare in South Africa. It is noticeable that traditional healing is not only limited to Qokolweni. It occurs mutatis mutandis else wherein the Eastern Cape and in the whole of South Africa.
- Full Text:
- Date Issued: 2011
Experiences of casualty doctors regarding their role in the management of gender-based violence victims at the intermediate hospitals, Oshakati
- Tachere, Oghoteru Richardson
- Authors: Tachere, Oghoteru Richardson
- Date: 2011
- Subjects: Family violence -- Namibia , Physicians -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10029 , http://hdl.handle.net/10948/1309 , Family violence -- Namibia , Physicians -- Namibia
- Description: The research focused on the experiences of casualty doctors regarding their role in the management of gender-based violence victims at the Intermediate Hospital Oshakati, Namibia. A qualitative, exploratory, descriptive and contextual research design was utilized and data were collected by means of semi-structured interviews. These were audio-taped, transcribed verbatim and analyzed using the Tesch’s method of qualitative data analysis by the researcher in conjunction with an independent coder. The research findings revealed that the study participants experienced gender-based violence as a common and recurrent public health issue. Participants indicated that the majority of the victims presented with a wide range of physical injuries as well as significant emotional trauma. With further exploration, it emerged that participants identified alcohol abuse, low socioeconomic status and several relationship problems as prevalent factors associated with gender-based violence. They also recognized that the current programme managing gender-based violence provides a measure of safety for victims by making emergency services available. In addition, these services could be accessed free of charge and victims identified as ‘high-risk’ were offered sanctuary in the ward to prevent further harm. Study participants further observed that the presence of a multi-disciplinary team of care-givers also contribute positively to the management of gender-based violence victims. However, participants experienced several challenges that impair their role in the management of gender-based violence victims. Notable among these are high workload (arising from shortage of personnel and offering services to non-emergency cases in casualty), lack of collaboration among team members and a lack of proficiency in psychosocial intervention strategies. Based on the study findings, it is hereby recommended that clear guidelines for the management of gender-based violence victims should be established and a better collaboration among all cadres of professionals involved in this issue should be promoted. In addition, campaigns to sensitize the community about values that can help in the prevention of gender-based violence and dangers of alcohol abuse as well as strengthening the legislative framework vis-à-vis implementing punitive measures against culprits, should be vigorously pursued.
- Full Text:
- Date Issued: 2011
- Authors: Tachere, Oghoteru Richardson
- Date: 2011
- Subjects: Family violence -- Namibia , Physicians -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10029 , http://hdl.handle.net/10948/1309 , Family violence -- Namibia , Physicians -- Namibia
- Description: The research focused on the experiences of casualty doctors regarding their role in the management of gender-based violence victims at the Intermediate Hospital Oshakati, Namibia. A qualitative, exploratory, descriptive and contextual research design was utilized and data were collected by means of semi-structured interviews. These were audio-taped, transcribed verbatim and analyzed using the Tesch’s method of qualitative data analysis by the researcher in conjunction with an independent coder. The research findings revealed that the study participants experienced gender-based violence as a common and recurrent public health issue. Participants indicated that the majority of the victims presented with a wide range of physical injuries as well as significant emotional trauma. With further exploration, it emerged that participants identified alcohol abuse, low socioeconomic status and several relationship problems as prevalent factors associated with gender-based violence. They also recognized that the current programme managing gender-based violence provides a measure of safety for victims by making emergency services available. In addition, these services could be accessed free of charge and victims identified as ‘high-risk’ were offered sanctuary in the ward to prevent further harm. Study participants further observed that the presence of a multi-disciplinary team of care-givers also contribute positively to the management of gender-based violence victims. However, participants experienced several challenges that impair their role in the management of gender-based violence victims. Notable among these are high workload (arising from shortage of personnel and offering services to non-emergency cases in casualty), lack of collaboration among team members and a lack of proficiency in psychosocial intervention strategies. Based on the study findings, it is hereby recommended that clear guidelines for the management of gender-based violence victims should be established and a better collaboration among all cadres of professionals involved in this issue should be promoted. In addition, campaigns to sensitize the community about values that can help in the prevention of gender-based violence and dangers of alcohol abuse as well as strengthening the legislative framework vis-à-vis implementing punitive measures against culprits, should be vigorously pursued.
- Full Text:
- Date Issued: 2011
Relationship marketing in retail banks: superannuated concept?
- Authors: Tait, Madele
- Subjects: Relationship marketing , Banks and banking , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20923 , vital:29418
- Description: All business is based on relationships. The firm only has to make them meaningful for its customers – provided that the customers want this (Grönroos 1994). Relationship marketing concerns the facilitation and managing of the relationships between the business and its customers and was developed as a response to the realisation that businesses were spending vast resources in time and money to attract new customers but very little on retaining existing ones. Relationship marketing is particularly relevant when a customer has alternative service providers to choose from, when the customer makes the selection decision and when there is an ongoing desire or need for a product or service, such as in the banking industry (Morgan & Hunt 1999).
- Full Text:
- Authors: Tait, Madele
- Subjects: Relationship marketing , Banks and banking , f-sa
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/10948/20923 , vital:29418
- Description: All business is based on relationships. The firm only has to make them meaningful for its customers – provided that the customers want this (Grönroos 1994). Relationship marketing concerns the facilitation and managing of the relationships between the business and its customers and was developed as a response to the realisation that businesses were spending vast resources in time and money to attract new customers but very little on retaining existing ones. Relationship marketing is particularly relevant when a customer has alternative service providers to choose from, when the customer makes the selection decision and when there is an ongoing desire or need for a product or service, such as in the banking industry (Morgan & Hunt 1999).
- Full Text:
The implementation of the right to education in South Africa and Nigeria
- Authors: Taiwo, Elijah Adewale
- Date: 2011
- Subjects: Right to education -- South Africa , Right to education -- Nigeria , Human rights -- Study and teaching , Comparative education , Education -- South Africa , Education -- Nigeria , Right to education -- Law and legislation -- South Africa , Right to education -- Law and legislation -- Nigeria
- Language: English
- Type: Thesis , Doctoral , LLD
- Identifier: vital:10279 , http://hdl.handle.net/10948/1392 , Right to education -- South Africa , Right to education -- Nigeria , Human rights -- Study and teaching , Comparative education , Education -- South Africa , Education -- Nigeria , Right to education -- Law and legislation -- South Africa , Right to education -- Law and legislation -- Nigeria
- Description: The thesis examines the right to education in South Africa and Nigeria. It presents the right to education as an empowerment right which is given a wide recognition in a number of important international and regional human rights instruments as well as in national constitutions. It asserts that the right to education is a right with a multiplying effect in the sense that where it is effectively guaranteed, it enhances the enjoyment of all other rights and freedoms, and when it is denied, it precludes the enjoyment of many other human rights. The thesis examines the provisions of relevant international and regional human rights instruments to assess the adequacy of a framework that applies to South Africa and Nigeria's obligations regarding the right to education. It argues that those instruments impose obligations on all the States to make primary, secondary and higher levels of education available, accessible, acceptable and adaptable to all in their territories. It argues that by having ratified those international agreements in which the right to education is protected, both South Africa and Nigeria assume obligations under international law, enjoining them to realise the right to education and to respect freedoms in education. The study adopts a comparative approach and relies on primary and secondary sources of data; the data is subjected to an in-depth content analysis. The focus of the comparison is on whether the South African's position regarding the right to education can inform Nigeria's interpretation of the right to education. The reason being that the Nigerian Constitution does not provide for the right to education as a basic right as exists in South Africa. The Nigerian Constitution categorised the right to education under “fundamental objectives and directive principles” which are non-justiciable. In this sense, the thesis argues that the legal classification of the right to education, to a large extent, affects its realisation in Nigeria. It suggests that an important area where Nigeria could learn from South Africa is the issue of justiciability and constitutionalising the right to education as well as other socio-economic rights. In terms of implementation, the thesis submits that despite the international obligations and commitments to provide education for all, there is a significant gap between what is stipulated and the practical realities in the two countries. It argues that the right to education is more than a mere school attendance, how well a learner progresses in school is equally important. It posits that the high failure rates and the progressive slide in students' performances in schools xx examinations as shown in the study illustrate the poor quality and falling standard of education in the two countries. South Africa enjoys one of the highest rates of formal school enrolment of any developing country, yet the link between access and success is also weak in the South African schools just as in Nigerian schools. Inadequate planning, poor implementation of policies, lack of adequate resources and commitments are identified as the prime factors hampering the implementation of the right to education in both countries. Solving these problems and making the right to education realisable call for a renewed government commitments and investment of appropriate human and financial resources on education. This also requires a strong political will as well as concerted efforts of all the various actors in the educational sector in the two countries.
- Full Text:
- Date Issued: 2011
- Authors: Taiwo, Elijah Adewale
- Date: 2011
- Subjects: Right to education -- South Africa , Right to education -- Nigeria , Human rights -- Study and teaching , Comparative education , Education -- South Africa , Education -- Nigeria , Right to education -- Law and legislation -- South Africa , Right to education -- Law and legislation -- Nigeria
- Language: English
- Type: Thesis , Doctoral , LLD
- Identifier: vital:10279 , http://hdl.handle.net/10948/1392 , Right to education -- South Africa , Right to education -- Nigeria , Human rights -- Study and teaching , Comparative education , Education -- South Africa , Education -- Nigeria , Right to education -- Law and legislation -- South Africa , Right to education -- Law and legislation -- Nigeria
- Description: The thesis examines the right to education in South Africa and Nigeria. It presents the right to education as an empowerment right which is given a wide recognition in a number of important international and regional human rights instruments as well as in national constitutions. It asserts that the right to education is a right with a multiplying effect in the sense that where it is effectively guaranteed, it enhances the enjoyment of all other rights and freedoms, and when it is denied, it precludes the enjoyment of many other human rights. The thesis examines the provisions of relevant international and regional human rights instruments to assess the adequacy of a framework that applies to South Africa and Nigeria's obligations regarding the right to education. It argues that those instruments impose obligations on all the States to make primary, secondary and higher levels of education available, accessible, acceptable and adaptable to all in their territories. It argues that by having ratified those international agreements in which the right to education is protected, both South Africa and Nigeria assume obligations under international law, enjoining them to realise the right to education and to respect freedoms in education. The study adopts a comparative approach and relies on primary and secondary sources of data; the data is subjected to an in-depth content analysis. The focus of the comparison is on whether the South African's position regarding the right to education can inform Nigeria's interpretation of the right to education. The reason being that the Nigerian Constitution does not provide for the right to education as a basic right as exists in South Africa. The Nigerian Constitution categorised the right to education under “fundamental objectives and directive principles” which are non-justiciable. In this sense, the thesis argues that the legal classification of the right to education, to a large extent, affects its realisation in Nigeria. It suggests that an important area where Nigeria could learn from South Africa is the issue of justiciability and constitutionalising the right to education as well as other socio-economic rights. In terms of implementation, the thesis submits that despite the international obligations and commitments to provide education for all, there is a significant gap between what is stipulated and the practical realities in the two countries. It argues that the right to education is more than a mere school attendance, how well a learner progresses in school is equally important. It posits that the high failure rates and the progressive slide in students' performances in schools xx examinations as shown in the study illustrate the poor quality and falling standard of education in the two countries. South Africa enjoys one of the highest rates of formal school enrolment of any developing country, yet the link between access and success is also weak in the South African schools just as in Nigerian schools. Inadequate planning, poor implementation of policies, lack of adequate resources and commitments are identified as the prime factors hampering the implementation of the right to education in both countries. Solving these problems and making the right to education realisable call for a renewed government commitments and investment of appropriate human and financial resources on education. This also requires a strong political will as well as concerted efforts of all the various actors in the educational sector in the two countries.
- Full Text:
- Date Issued: 2011
Development of MgZnO-grown MOCVD for UV Photonic applications
- Authors: Talla, Kharouna
- Date: 2011
- Subjects: Photoluminescence , Photonics , Zinc oxide
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10537 , http://hdl.handle.net/10948/d1012585 , Photoluminescence , Photonics , Zinc oxide
- Description: MgxZn1-xO has emerged as a material of great technological importance. Having a direct energy band gap that is tunable throughout much of the ultraviolet (UV) region of the spectrum from the near-UV (~370 nm) to the deep-UV (~176 nm), this compound is of interest for a variety of optoelectronic devices operating in this part of the electromagnetic spectrum. MgxZn1-xO offers advantages over the more mature compound semiconductor AlGaN which stem mainly from the unusually high exciton binding energy (60 meV in ZnO). In this study the growth of ZnO and MgxZn1-xO thin films using metal organic chemical vapour deposition (MOCVD) is systematically investigated. The films are mainly grown on c-Al2O3 and Si (100) and characterized using various techniques, such as photoluminescence (PL), x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and auger electron spectroscopy (AES). The optical and the structural properties are essentially inspected in order to improve their quality. In this thesis the optimisation of ZnO grown using oxygen gas as a new oxidant in our reactor is investigated. The growth temperature and VI/II ratio are varied in order to find optimum parameters giving high quality layers. The effects of Si (100), Si (111), c- and r-sapphire, glass, GaAs and ZnO substrates on the optical, structural and morphological properties of ZnO thin films grown with tert-butanol (TBOH) is examined. Similar morphologies are observed for all substrates, with the films comprising hexagonal columns having cone shaped ends. The photoluminescence spectra are similar, but the various transitions have different relative intensities. It is clear that the different substrates influence neither the orientation of the films, nor the surface morphology, significantly. The photoluminescence hints at larger stacking fault densities in films grown on silicon and glass, however, as evidenced by stronger basal plane stacking fault-related luminescence at ~3.319 eV in the relevant low temperature photoluminescence spectra. The morphology changes with Mg incorporation, from hexagonal columnar structures to cubic faceted columns. From PL, the full with at half maximum is found to gradually increase with Mg content due to alloy broadening. The deep level emission (DLE) is observed to shift with Mg content. By changing the Mg content, the band gap of MgxZn1-xO film is tuned by ~450 meV, which provides an excellent opportunity for band gap engineering for optoelectronic applications. The c-lattice constant of ZnO (5.205 Å) decreases by only 0.6% when the Mg content reaches x=0.39. The introduction of Mg into ZnO is shown to increase the relative PL intensity of stacking fault-related transitions (at 3.314 eV for ZnO). This becomes the dominant near band edge emission. Using TEM a thin Mg rich layer is observed at the interface between the film and the Si or Al2O3. Temperature dependent PL measurements on layers with low Mg concentration (x=0.05 and 0.1) show that the main bound exciton peak exhibits an “s-shaped” temperature dependence, characteristic of localization in a disordered alloy. The origin of the PL line broadening of MgxZn1-xO (x≤0.04) is also analyzed with respect to alloy broadening, taking into account a random cation distribution and alloy clustering. The influence of various MOCVD growth parameters such as growth temperature and VI/II ratio is studied. Varying the temperature from 280 ˚C to 580 ˚C reveals strong morphological changes and optical degradation of the films. Low (<280 ˚C) and high (>580 ˚C) growth temperatures reduce the Mg incorporation. High VI/II ratios also decrease the Mg incorporation, as evidenced by the red-shift of the donor bound exciton (D°X) line. This is ascribed to a stronger premature reaction between (MeCp)2Mg and the oxidant or a preferential heterogeneous interaction between the Mg and oxygen species on the growth front. For both oxidizing agents (O2 and TBOH), the growth at 420 ˚C and a VI-II ratio of 60 on c-Al2O3 gave optimal quality layers in terms of their optical and structural quality. A comparison of films grown using TBOH and O2 gas as oxidizing agent shows no major difference in terms of Mg incorporation. The effect of annealing, the inclusion of a buffer layer and the influence of growth rate on the properties MgxZn1-xO thin films are also reported.
- Full Text:
- Date Issued: 2011
- Authors: Talla, Kharouna
- Date: 2011
- Subjects: Photoluminescence , Photonics , Zinc oxide
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10537 , http://hdl.handle.net/10948/d1012585 , Photoluminescence , Photonics , Zinc oxide
- Description: MgxZn1-xO has emerged as a material of great technological importance. Having a direct energy band gap that is tunable throughout much of the ultraviolet (UV) region of the spectrum from the near-UV (~370 nm) to the deep-UV (~176 nm), this compound is of interest for a variety of optoelectronic devices operating in this part of the electromagnetic spectrum. MgxZn1-xO offers advantages over the more mature compound semiconductor AlGaN which stem mainly from the unusually high exciton binding energy (60 meV in ZnO). In this study the growth of ZnO and MgxZn1-xO thin films using metal organic chemical vapour deposition (MOCVD) is systematically investigated. The films are mainly grown on c-Al2O3 and Si (100) and characterized using various techniques, such as photoluminescence (PL), x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and auger electron spectroscopy (AES). The optical and the structural properties are essentially inspected in order to improve their quality. In this thesis the optimisation of ZnO grown using oxygen gas as a new oxidant in our reactor is investigated. The growth temperature and VI/II ratio are varied in order to find optimum parameters giving high quality layers. The effects of Si (100), Si (111), c- and r-sapphire, glass, GaAs and ZnO substrates on the optical, structural and morphological properties of ZnO thin films grown with tert-butanol (TBOH) is examined. Similar morphologies are observed for all substrates, with the films comprising hexagonal columns having cone shaped ends. The photoluminescence spectra are similar, but the various transitions have different relative intensities. It is clear that the different substrates influence neither the orientation of the films, nor the surface morphology, significantly. The photoluminescence hints at larger stacking fault densities in films grown on silicon and glass, however, as evidenced by stronger basal plane stacking fault-related luminescence at ~3.319 eV in the relevant low temperature photoluminescence spectra. The morphology changes with Mg incorporation, from hexagonal columnar structures to cubic faceted columns. From PL, the full with at half maximum is found to gradually increase with Mg content due to alloy broadening. The deep level emission (DLE) is observed to shift with Mg content. By changing the Mg content, the band gap of MgxZn1-xO film is tuned by ~450 meV, which provides an excellent opportunity for band gap engineering for optoelectronic applications. The c-lattice constant of ZnO (5.205 Å) decreases by only 0.6% when the Mg content reaches x=0.39. The introduction of Mg into ZnO is shown to increase the relative PL intensity of stacking fault-related transitions (at 3.314 eV for ZnO). This becomes the dominant near band edge emission. Using TEM a thin Mg rich layer is observed at the interface between the film and the Si or Al2O3. Temperature dependent PL measurements on layers with low Mg concentration (x=0.05 and 0.1) show that the main bound exciton peak exhibits an “s-shaped” temperature dependence, characteristic of localization in a disordered alloy. The origin of the PL line broadening of MgxZn1-xO (x≤0.04) is also analyzed with respect to alloy broadening, taking into account a random cation distribution and alloy clustering. The influence of various MOCVD growth parameters such as growth temperature and VI/II ratio is studied. Varying the temperature from 280 ˚C to 580 ˚C reveals strong morphological changes and optical degradation of the films. Low (<280 ˚C) and high (>580 ˚C) growth temperatures reduce the Mg incorporation. High VI/II ratios also decrease the Mg incorporation, as evidenced by the red-shift of the donor bound exciton (D°X) line. This is ascribed to a stronger premature reaction between (MeCp)2Mg and the oxidant or a preferential heterogeneous interaction between the Mg and oxygen species on the growth front. For both oxidizing agents (O2 and TBOH), the growth at 420 ˚C and a VI-II ratio of 60 on c-Al2O3 gave optimal quality layers in terms of their optical and structural quality. A comparison of films grown using TBOH and O2 gas as oxidizing agent shows no major difference in terms of Mg incorporation. The effect of annealing, the inclusion of a buffer layer and the influence of growth rate on the properties MgxZn1-xO thin films are also reported.
- Full Text:
- Date Issued: 2011
Biphenyl sorption to different soil clay minerals
- Tandlich, Roman, Baláž, Štefan
- Authors: Tandlich, Roman , Baláž, Štefan
- Date: 2011
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/76869 , vital:30632 , https://doi.org/10.5897/AJAR10.1012
- Description: Only limited information is available in the literature on the role of soil mineral surfaces in the sorption of hydrophobic organic pollutants. This knowledge gap is addressed through the assessment of biphenyl sorption to kaolinite, illite and bentonite; using the batch equilibration technique with incubations lasting 6 or 21 days at 28 ± 2°C in the dark [RT1]. Sorption of biphenyl onto kaolinite followed the Freundlich sorption isotherm, whereas linear sorption isotherms were observed on illite and bentonite [RT2]. The biphenyl sorption partition coefficient on kaolinite ranged from 0.1 to 9.1 cm3.g-1 after 6 days and no sorption was observed after 21 days. This could have been caused by a completely reversible sorption or a loss of binding capacity after 21 days [RT3]. The respective values of the biphenyl sorption partition coefficient on illite and bentonite ranged from 20.3 ± 0.3 to 120 ± 8 cm3.g-1.Sorption equilibrium on the internal clay surfaces was reached after 6 days, as indicated by the sorption data for illite and bentonite [RT4]. Access of biphenyl molecules to the internal clay surfaces is a function of the ionic strength of soil solution and the soil organic matter is the dominant site for biphenyl sorption after 6 to 21 days.
- Full Text:
- Date Issued: 2011
- Authors: Tandlich, Roman , Baláž, Štefan
- Date: 2011
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/76869 , vital:30632 , https://doi.org/10.5897/AJAR10.1012
- Description: Only limited information is available in the literature on the role of soil mineral surfaces in the sorption of hydrophobic organic pollutants. This knowledge gap is addressed through the assessment of biphenyl sorption to kaolinite, illite and bentonite; using the batch equilibration technique with incubations lasting 6 or 21 days at 28 ± 2°C in the dark [RT1]. Sorption of biphenyl onto kaolinite followed the Freundlich sorption isotherm, whereas linear sorption isotherms were observed on illite and bentonite [RT2]. The biphenyl sorption partition coefficient on kaolinite ranged from 0.1 to 9.1 cm3.g-1 after 6 days and no sorption was observed after 21 days. This could have been caused by a completely reversible sorption or a loss of binding capacity after 21 days [RT3]. The respective values of the biphenyl sorption partition coefficient on illite and bentonite ranged from 20.3 ± 0.3 to 120 ± 8 cm3.g-1.Sorption equilibrium on the internal clay surfaces was reached after 6 days, as indicated by the sorption data for illite and bentonite [RT4]. Access of biphenyl molecules to the internal clay surfaces is a function of the ionic strength of soil solution and the soil organic matter is the dominant site for biphenyl sorption after 6 to 21 days.
- Full Text:
- Date Issued: 2011
Towards community environmental education using current institutional resources, GIS and remote sensing, and local knowledge: a case of the Nandi Hills and Nandi Forests, Western Kenya
- Authors: Tanui, Julius Gordon
- Date: 2011
- Subjects: Environmental education -- Kenya -- Western Province , Community-based conservation -- Kenya -- Western Province , Conservation of natural resources -- Kenya -- Western Province
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9568 , http://hdl.handle.net/10948/d1016074
- Description: The Nandi Hills and Nandi Forests in Nandi County, Kenya are major water catchments for Lake Victoria. However, these resources have faced significant decline and degradation in recent times, thereby impacting the hydrological quality and quantity in the Lake Victoria Basin. This study was informed by the observed degradation of the Nandi Hills and Nandi Forests, epitomized by the receding forest cover, drying up of previously permanent streams, instances of mudslides and rock falls, and downstream flooding. The study therefore sought to interrogate the current institutional environmental and educational arrangements and practices which are pertinent to the sustainable management of the Nandi Hills Forests, the perceptions and understandings of the local population in terms of forest resources and land use, and the information that can be provided by GIS and Remote Sensing data, in order to produce a heuristic for planning community environmental education in the Nandi County. To achieve this, a mixed methodological design which incorporated both qualitative and quantitative data was embraced. The mixed method approaches used in this study were the concurrent triangulation and nested/embedded designs. A four-tier analysis was carried out once all the data had been coded and grouped. The analysis covered three categories of the population in the study area; namely the households, institutions and community groups, and analysis of Landsat images for change detection. The study reveals that there are several state and non-state institutions that are involved in the management of the Nandi Hills Forests and that their efforts have seen an improvement in the perceptions of the local population in terms of the importance of environmental management of the forests. Analysis of the Landsat images has revealed receding natural forest cover. The contribution of informal, local and indigenous knowledge to sustainable management of the Nandi Hills Forest was notable (85 percent of the population attribute their knowledge on forests and forestry to informal knowledge sources). These results informed the development of a heuristic to enable the adoption of strategies using readily accessible, though loosely applicable, information for problem solving in developing and implementing community environmental education practices for effective forest management and conservation practices that are responsive to the needs of the Nandi Forest community.
- Full Text:
- Date Issued: 2011
- Authors: Tanui, Julius Gordon
- Date: 2011
- Subjects: Environmental education -- Kenya -- Western Province , Community-based conservation -- Kenya -- Western Province , Conservation of natural resources -- Kenya -- Western Province
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9568 , http://hdl.handle.net/10948/d1016074
- Description: The Nandi Hills and Nandi Forests in Nandi County, Kenya are major water catchments for Lake Victoria. However, these resources have faced significant decline and degradation in recent times, thereby impacting the hydrological quality and quantity in the Lake Victoria Basin. This study was informed by the observed degradation of the Nandi Hills and Nandi Forests, epitomized by the receding forest cover, drying up of previously permanent streams, instances of mudslides and rock falls, and downstream flooding. The study therefore sought to interrogate the current institutional environmental and educational arrangements and practices which are pertinent to the sustainable management of the Nandi Hills Forests, the perceptions and understandings of the local population in terms of forest resources and land use, and the information that can be provided by GIS and Remote Sensing data, in order to produce a heuristic for planning community environmental education in the Nandi County. To achieve this, a mixed methodological design which incorporated both qualitative and quantitative data was embraced. The mixed method approaches used in this study were the concurrent triangulation and nested/embedded designs. A four-tier analysis was carried out once all the data had been coded and grouped. The analysis covered three categories of the population in the study area; namely the households, institutions and community groups, and analysis of Landsat images for change detection. The study reveals that there are several state and non-state institutions that are involved in the management of the Nandi Hills Forests and that their efforts have seen an improvement in the perceptions of the local population in terms of the importance of environmental management of the forests. Analysis of the Landsat images has revealed receding natural forest cover. The contribution of informal, local and indigenous knowledge to sustainable management of the Nandi Hills Forest was notable (85 percent of the population attribute their knowledge on forests and forestry to informal knowledge sources). These results informed the development of a heuristic to enable the adoption of strategies using readily accessible, though loosely applicable, information for problem solving in developing and implementing community environmental education practices for effective forest management and conservation practices that are responsive to the needs of the Nandi Forest community.
- Full Text:
- Date Issued: 2011
Race, class and inequality: an exploration of the scholarship of Professor Bernard Magubane
- Authors: Tanyanyiwa, Precious
- Date: 2011
- Subjects: Magubane, Bernard -- Knowledge and learning , South Africa -- Race relations , Sociology -- South Africa , Race -- South Africa , Equality -- South Africa , Research -- South Africa , South Africa -- Social policy , Social classes -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3324 , http://hdl.handle.net/10962/d1003112 , Magubane, Bernard -- Knowledge and learning , South Africa -- Race relations , Sociology -- South Africa , Race -- South Africa , Equality -- South Africa , Research -- South Africa , South Africa -- Social policy , Social classes -- South Africa
- Description: This thesis begins with the assumption that the theory of academic dependency provides an adequate framework within which the relationship between social science communities in the North and South can be understood. Present problems of social scientists in the South have very often been attributed to this dependence and it has been concluded that academic dependence has resulted in an uncritical and imitative approach to ideas and concepts from the West (Alatas, 2000). This dependence has also resulted in the general regression among social scientists based in the South and in a marginalisation of their works within the social science community no matter how significant and original they may be. The problematic invisibility of the works of prominent South African scholars is a dimension of a wider crisis of academic dependence, if unchecked this current trend will also reinforce academic dependence. From the nature of the problems generated by academic dependence, it is obvious that there is a need for an intellectual emancipation movement. This movement may take different forms that may range from but are not limited to a commitment to endogeneity which involves among other things, knowledge production that takes South African local conditions seriously enough to be the basis for the development of distinct conceptual ideas and theories. This requires transcending the tendency to use ‘the local’ primarily as a tool for data collection and theoretical framing done from the global north. Secondly, there is a need to take the local, indigenous, ontological narratives seriously enough to serve as source codes for works of distinct epistemological value and exemplary ideas within the global project of knowledge production. Endogeneity in the context of African knowledge production should also involve an intellectual standpoint derived from a rootedness in the African conditions; a centring of African ontological discourses and experiences as the basis of intellectual work (Adesina, 2008: 135). In this study, it is suggested that the recommendations highlighted above can only succeed if scholars make an effort to actually engage with locally produced knowledge. There is therefore a need to make greater efforts to know each other’s work on Africa. This demand is not to appease individual egos but it is essential for progress in scientific work. African communities will benefit from drawing with greater catholicity from the well–spring of knowledge about Africa generated by Africans. In the South African context, transcending academic dependence in the new generation of young academics requires engagement with the work of our local scholars who have devoted their lives to knowledge production. This thesis explores the scholarship of Professor Bernard Magubane by engaging with his works on race, class and inequality by locating his works within the wider debates on race, class and inequality in South Africa. The specific contributions of Professor Magubane to the enterprise of knowledge production are identified and discussed in relation to his critique of Western social science in its application to Africa. The making of Professor Magubane’s life, his career, scholarship and biography details are analysed with the intention of showing their influence on Magubane as a Scholar. The examination of Professor Magubane’s intellectual and biographical accounts help to explain the details, contexts and implications of his theoretical paradigm shifts. This helps prove that Professor Magubane’s experiences and theoretical positions were socially and historically constituted. The research from which this thesis derives is part of an NRF-funded project, on Endogeneity and Modern Sociology in South Africa, under the direction of Professor Jimi Adesina.
- Full Text:
- Date Issued: 2011
- Authors: Tanyanyiwa, Precious
- Date: 2011
- Subjects: Magubane, Bernard -- Knowledge and learning , South Africa -- Race relations , Sociology -- South Africa , Race -- South Africa , Equality -- South Africa , Research -- South Africa , South Africa -- Social policy , Social classes -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3324 , http://hdl.handle.net/10962/d1003112 , Magubane, Bernard -- Knowledge and learning , South Africa -- Race relations , Sociology -- South Africa , Race -- South Africa , Equality -- South Africa , Research -- South Africa , South Africa -- Social policy , Social classes -- South Africa
- Description: This thesis begins with the assumption that the theory of academic dependency provides an adequate framework within which the relationship between social science communities in the North and South can be understood. Present problems of social scientists in the South have very often been attributed to this dependence and it has been concluded that academic dependence has resulted in an uncritical and imitative approach to ideas and concepts from the West (Alatas, 2000). This dependence has also resulted in the general regression among social scientists based in the South and in a marginalisation of their works within the social science community no matter how significant and original they may be. The problematic invisibility of the works of prominent South African scholars is a dimension of a wider crisis of academic dependence, if unchecked this current trend will also reinforce academic dependence. From the nature of the problems generated by academic dependence, it is obvious that there is a need for an intellectual emancipation movement. This movement may take different forms that may range from but are not limited to a commitment to endogeneity which involves among other things, knowledge production that takes South African local conditions seriously enough to be the basis for the development of distinct conceptual ideas and theories. This requires transcending the tendency to use ‘the local’ primarily as a tool for data collection and theoretical framing done from the global north. Secondly, there is a need to take the local, indigenous, ontological narratives seriously enough to serve as source codes for works of distinct epistemological value and exemplary ideas within the global project of knowledge production. Endogeneity in the context of African knowledge production should also involve an intellectual standpoint derived from a rootedness in the African conditions; a centring of African ontological discourses and experiences as the basis of intellectual work (Adesina, 2008: 135). In this study, it is suggested that the recommendations highlighted above can only succeed if scholars make an effort to actually engage with locally produced knowledge. There is therefore a need to make greater efforts to know each other’s work on Africa. This demand is not to appease individual egos but it is essential for progress in scientific work. African communities will benefit from drawing with greater catholicity from the well–spring of knowledge about Africa generated by Africans. In the South African context, transcending academic dependence in the new generation of young academics requires engagement with the work of our local scholars who have devoted their lives to knowledge production. This thesis explores the scholarship of Professor Bernard Magubane by engaging with his works on race, class and inequality by locating his works within the wider debates on race, class and inequality in South Africa. The specific contributions of Professor Magubane to the enterprise of knowledge production are identified and discussed in relation to his critique of Western social science in its application to Africa. The making of Professor Magubane’s life, his career, scholarship and biography details are analysed with the intention of showing their influence on Magubane as a Scholar. The examination of Professor Magubane’s intellectual and biographical accounts help to explain the details, contexts and implications of his theoretical paradigm shifts. This helps prove that Professor Magubane’s experiences and theoretical positions were socially and historically constituted. The research from which this thesis derives is part of an NRF-funded project, on Endogeneity and Modern Sociology in South Africa, under the direction of Professor Jimi Adesina.
- Full Text:
- Date Issued: 2011
Adaptation choices, community perceptions, livelihood linkages and income dynamics for district producer communities surrounding Nyatana Game Park in Zimbabwe
- Authors: Taruvinga, Amon
- Date: 2011
- Subjects: Game reserves -- Zimbabwe , Wildlife conservation -- Zimbabwe , Wildlife management -- Zimbabwe , Sustainable development -- Zimbabwe , Game farms -- Zimbabwe , Rural poor -- Zimbabwe
- Language: English
- Type: Thesis , Doctoral , PhD (Agricultural Economics)
- Identifier: vital:11154 , http://hdl.handle.net/10353/476 , Game reserves -- Zimbabwe , Wildlife conservation -- Zimbabwe , Wildlife management -- Zimbabwe , Sustainable development -- Zimbabwe , Game farms -- Zimbabwe , Rural poor -- Zimbabwe
- Description: This thesis explores human-wildlife interactions under community managed game parks. The thesis consists of an introductory chapter, study location chapter and four self-contained studies based on different samples from created clusters surrounding Nyatana Game Park, which make up the rest of the thesis chapters. Chapter one presents an introductory overview of wildlife management in Zimbabwe, specifically looking at human-wildlife interactions under CAMPFIRE projects, welfare dynamics and conservation implications for the surrounding communities who share boundaries with community-managed game parks. The chapter concludes by highlighting the challenges facing community-based wildlife conservation in Zimbabwe as well as the key concepts that will be the subject of the rest of the thesis. Chapter two presents the study location; it highlights the road map to the study area, starting with the provincial location, and indicates the specific districts from which respondents were selected. A brief agro-ecological summary of the study area is also presented; it looks specifically at climate, vegetation and a demographic data of the study area. Chapter three: Can game parks be trusted as livelihood sources? To answer this topical question, Chapter three explores livelihood adaptation strategies for households who share boundaries with Nyatana Game Park. Most of the community managed game parks, under CAMPFIRE principles in Zimbabwe, were established with the primary objective of generating revenue for the surrounding communities; this was done in the hope of using positive returns from game farming to promote the conservation of wildlife. Has this materialised in practice? Descriptive results from this study seem to suggest otherwise, where mixed farming and gold panning were the major livelihood adaptation choices reported by most households. The revenue from game farming was reported to be too low and inconsistent, to such an extent that the majority of the community regarded it as risky and unreliable. A multinomial logistic regression model for correlates of adaptation choices indicated that access to credit, markets, and extension may be some of the current institutional constraints inhibiting households from accessing off-farm sources for their livelihoods. In addition, household size, gender and age may enhance the adaptive capacity of households to move out of risky crop faming into other off-farm portfolio diversifications. The study, therefore, suggests that game parks, according to the evidence uncovered by the study, may not be trusted as a reliable and sustainable livelihood source. If local communities who share boundaries with game parks do not view them as reliable and sustainable livelihood sources, as concluded in Chapter three, how can they (local communities) be trusted to conserve them? To assess their perceptions of game parks, Chapter four presents a multinomial logistic regression model for perceptions of society on game parks using the African elephant as a typical example. The results suggest that Problem Animal Control (PAC) perceptions, livestock predation and issues of low and poor revenue distribution may be some of the critical perceptions capable of influencing surrounding communities to negatively participate in the conservation of wildlife. The results further suggest that using wildlife proceeds to finance observable local common pool infrastructure may positively influence the surrounding communities to conserve wildlife. The chief conclusion regarding game parks, therefore, was that the surrounding communities were in favour of the obliteration pathway, although minimal conservation perceptions were also available. Given the negative conclusions regarding game parks, as suggested in Chapters three and four, citizens would then wonder if any meaningful hope for community managed game parks exists. Chapter five probes the buffer zone livelihood link under community managed game parks, using evidence from the Nyatana Game Park. The binary logistic regression model results, for buffer zone participation and resource extraction combinations by surrounding communities, suggest that resource extraction may be market driven rather than focussing on domestic consumption. The study therefore concludes that the buffer zone livelihood link as currently practiced, though potential, may fail to address the livelihood expectations of the sub-district producer communities. The study therefore calls for extreme caution whenever the buffer zone livelihood link is considered, because several institutional and design conflicts exist within this dynamic. In Chapter six, the study further probed the buffer zone income dynamics for the sub-district producer community. The results of descriptive statistics suggest that the contribution of buffer zone activities to household income may be significant with a positive correlation to household agricultural income for communities who reside inside or close to the park (primary sub-district producer community). Using the Gini decomposition approach and Lorenz curves, the study concluded that a buffer zone income may be capable of contributing to more equally distributed incomes for rural communities who share boundaries with game parks. With respect to the correlates of household income, the results suggest that household size and age may negatively influence income from buffer zone activities, while gender may have a positive effect. This was also true for education and Livestock Units (LUs) with respect to income from self employment; the former positively and the latter negatively related. The results further suggest that land size may also be positively significant in order to explain income from agriculture as well as total income. With regard to the distance from the buffer zone, the results suggest a negative influence with respect to the buffer zone, agriculture and total income. The implied message therefore suggests that buffer zones may provide active livelihood sources which are capable of financing rural household agriculture. The income equalizing effect which is portrayed may also further imply that, if correctly targeted and promoted, a buffer zone income could possibly address the current income inequality which is generic in rural areas. However, this potential may not be realized due to the current buffer zone design status (created for local secondary use as opposed to commercial primary use), restrictive policies and poor institutional support. With this dilemma facing community managed game parks (threats as summarised in Chapters three and four amid the potential hope summarized in Chapters five and six), Chapter 7 concludes the study by suggesting that the human-wildlife interaction model, though currently theoretical, may have significant practical potential in addressing the livelihoods of the surrounding communities as well as promoting the conservation of wildlife. This could be possible if available challenges that range from low revenue, insecure property rights, high human-elephant conflict and institutional design conflict for buffer zone utilization are corrected by means of the free market system. This would allow market forces to deliver on the expectations of the ―human-wildlife interactions model‖ – sustainable livelihoods for the former and intergenerational conservation for the latter.
- Full Text:
- Date Issued: 2011
- Authors: Taruvinga, Amon
- Date: 2011
- Subjects: Game reserves -- Zimbabwe , Wildlife conservation -- Zimbabwe , Wildlife management -- Zimbabwe , Sustainable development -- Zimbabwe , Game farms -- Zimbabwe , Rural poor -- Zimbabwe
- Language: English
- Type: Thesis , Doctoral , PhD (Agricultural Economics)
- Identifier: vital:11154 , http://hdl.handle.net/10353/476 , Game reserves -- Zimbabwe , Wildlife conservation -- Zimbabwe , Wildlife management -- Zimbabwe , Sustainable development -- Zimbabwe , Game farms -- Zimbabwe , Rural poor -- Zimbabwe
- Description: This thesis explores human-wildlife interactions under community managed game parks. The thesis consists of an introductory chapter, study location chapter and four self-contained studies based on different samples from created clusters surrounding Nyatana Game Park, which make up the rest of the thesis chapters. Chapter one presents an introductory overview of wildlife management in Zimbabwe, specifically looking at human-wildlife interactions under CAMPFIRE projects, welfare dynamics and conservation implications for the surrounding communities who share boundaries with community-managed game parks. The chapter concludes by highlighting the challenges facing community-based wildlife conservation in Zimbabwe as well as the key concepts that will be the subject of the rest of the thesis. Chapter two presents the study location; it highlights the road map to the study area, starting with the provincial location, and indicates the specific districts from which respondents were selected. A brief agro-ecological summary of the study area is also presented; it looks specifically at climate, vegetation and a demographic data of the study area. Chapter three: Can game parks be trusted as livelihood sources? To answer this topical question, Chapter three explores livelihood adaptation strategies for households who share boundaries with Nyatana Game Park. Most of the community managed game parks, under CAMPFIRE principles in Zimbabwe, were established with the primary objective of generating revenue for the surrounding communities; this was done in the hope of using positive returns from game farming to promote the conservation of wildlife. Has this materialised in practice? Descriptive results from this study seem to suggest otherwise, where mixed farming and gold panning were the major livelihood adaptation choices reported by most households. The revenue from game farming was reported to be too low and inconsistent, to such an extent that the majority of the community regarded it as risky and unreliable. A multinomial logistic regression model for correlates of adaptation choices indicated that access to credit, markets, and extension may be some of the current institutional constraints inhibiting households from accessing off-farm sources for their livelihoods. In addition, household size, gender and age may enhance the adaptive capacity of households to move out of risky crop faming into other off-farm portfolio diversifications. The study, therefore, suggests that game parks, according to the evidence uncovered by the study, may not be trusted as a reliable and sustainable livelihood source. If local communities who share boundaries with game parks do not view them as reliable and sustainable livelihood sources, as concluded in Chapter three, how can they (local communities) be trusted to conserve them? To assess their perceptions of game parks, Chapter four presents a multinomial logistic regression model for perceptions of society on game parks using the African elephant as a typical example. The results suggest that Problem Animal Control (PAC) perceptions, livestock predation and issues of low and poor revenue distribution may be some of the critical perceptions capable of influencing surrounding communities to negatively participate in the conservation of wildlife. The results further suggest that using wildlife proceeds to finance observable local common pool infrastructure may positively influence the surrounding communities to conserve wildlife. The chief conclusion regarding game parks, therefore, was that the surrounding communities were in favour of the obliteration pathway, although minimal conservation perceptions were also available. Given the negative conclusions regarding game parks, as suggested in Chapters three and four, citizens would then wonder if any meaningful hope for community managed game parks exists. Chapter five probes the buffer zone livelihood link under community managed game parks, using evidence from the Nyatana Game Park. The binary logistic regression model results, for buffer zone participation and resource extraction combinations by surrounding communities, suggest that resource extraction may be market driven rather than focussing on domestic consumption. The study therefore concludes that the buffer zone livelihood link as currently practiced, though potential, may fail to address the livelihood expectations of the sub-district producer communities. The study therefore calls for extreme caution whenever the buffer zone livelihood link is considered, because several institutional and design conflicts exist within this dynamic. In Chapter six, the study further probed the buffer zone income dynamics for the sub-district producer community. The results of descriptive statistics suggest that the contribution of buffer zone activities to household income may be significant with a positive correlation to household agricultural income for communities who reside inside or close to the park (primary sub-district producer community). Using the Gini decomposition approach and Lorenz curves, the study concluded that a buffer zone income may be capable of contributing to more equally distributed incomes for rural communities who share boundaries with game parks. With respect to the correlates of household income, the results suggest that household size and age may negatively influence income from buffer zone activities, while gender may have a positive effect. This was also true for education and Livestock Units (LUs) with respect to income from self employment; the former positively and the latter negatively related. The results further suggest that land size may also be positively significant in order to explain income from agriculture as well as total income. With regard to the distance from the buffer zone, the results suggest a negative influence with respect to the buffer zone, agriculture and total income. The implied message therefore suggests that buffer zones may provide active livelihood sources which are capable of financing rural household agriculture. The income equalizing effect which is portrayed may also further imply that, if correctly targeted and promoted, a buffer zone income could possibly address the current income inequality which is generic in rural areas. However, this potential may not be realized due to the current buffer zone design status (created for local secondary use as opposed to commercial primary use), restrictive policies and poor institutional support. With this dilemma facing community managed game parks (threats as summarised in Chapters three and four amid the potential hope summarized in Chapters five and six), Chapter 7 concludes the study by suggesting that the human-wildlife interaction model, though currently theoretical, may have significant practical potential in addressing the livelihoods of the surrounding communities as well as promoting the conservation of wildlife. This could be possible if available challenges that range from low revenue, insecure property rights, high human-elephant conflict and institutional design conflict for buffer zone utilization are corrected by means of the free market system. This would allow market forces to deliver on the expectations of the ―human-wildlife interactions model‖ – sustainable livelihoods for the former and intergenerational conservation for the latter.
- Full Text:
- Date Issued: 2011
Study of protein complexes via homology modeling, applied to cysteine proteases and their protein inhibitors:
- Tastan Bishop, Özlem, Kroon, Matthys
- Authors: Tastan Bishop, Özlem , Kroon, Matthys
- Date: 2011
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148070 , vital:38707 , DOI: 10.1007/s00894-011-0990-y
- Description: This paper develops and evaluates large-scale calculation of 3D structures of protein complexes by homology modeling as a promising new approach for protein docking. The complexes investigated were papain-like cysteine proteases and their protein inhibitors, which play numerous roles in human and parasitic metabolisms. The structural modeling was performed in two parts. For the first part (evaluation set), nine crystal structure complexes were selected, 1325 homology models of known complexes were rebuilt by various templates including hybrids, allowing an analysis of the factors influencing the accuracy of the models. The important considerations for modeling the interface were protease coverage and inhibitor sequence identity. In the second part (study set), the findings of the evaluation set were used to select appropriate templates to model novel cysteine protease-inhibitor complexes from human and malaria parasites Plasmodium falciparum and Plasmodium vivax. The energy scores, considering the evaluation set, indicate that the models are of high accuracy.
- Full Text:
- Date Issued: 2011
- Authors: Tastan Bishop, Özlem , Kroon, Matthys
- Date: 2011
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148070 , vital:38707 , DOI: 10.1007/s00894-011-0990-y
- Description: This paper develops and evaluates large-scale calculation of 3D structures of protein complexes by homology modeling as a promising new approach for protein docking. The complexes investigated were papain-like cysteine proteases and their protein inhibitors, which play numerous roles in human and parasitic metabolisms. The structural modeling was performed in two parts. For the first part (evaluation set), nine crystal structure complexes were selected, 1325 homology models of known complexes were rebuilt by various templates including hybrids, allowing an analysis of the factors influencing the accuracy of the models. The important considerations for modeling the interface were protease coverage and inhibitor sequence identity. In the second part (study set), the findings of the evaluation set were used to select appropriate templates to model novel cysteine protease-inhibitor complexes from human and malaria parasites Plasmodium falciparum and Plasmodium vivax. The energy scores, considering the evaluation set, indicate that the models are of high accuracy.
- Full Text:
- Date Issued: 2011