A business plan for an international squid business
- Authors: Botha, Gerald
- Date: 2009
- Subjects: Business planning -- South Africa Strategic planning -- South Africa , Seafood industry -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/21604 , vital:29716
- Description: Talhado Fishing Enterprises (Pty) Ltd is a squid fishing company founded in 1988, with sea and land based freezing facilities. Operating from the East coast situated in the Port Elizabeth harbour, the company processes and packages its caught and bought out product for sales to its export customers situated in Spain and Italy. The company is privately owned, 38.8 percent owned by previously disadvantaged persons. This study examines the whether it would be feasible to expand its operations into the USA, namely into the California area where a squid fishery exists. The study further centres around the company’s existing markets, namely Spain and Italy, to establish whether demand exists to purchase this Californian squid specie. The reason for the study is that due to legislative and political issues growth in the squid industry in South Africa is limited. It is therefore considered pertinent to source further supply of product in order to expand its business. The aim of the study is establish whether it is feasible to expand the company’s operations internationally and does the outcome of this initial study warrant the development of an in depth business plan. In order to achieve these objectives the following approach was followed: A comprehensive literature study was conducted with regard to the industry internationally and locally; Interviews was conducted with independent experts such as attorneys and industry role players situated in California; Potential sellers of businesses were sourced in the California and interviews were arranged with these role players; The response to the interviews was measured against the literature study conducted and financial statements supplied.
- Full Text:
- Date Issued: 2009
- Authors: Botha, Gerald
- Date: 2009
- Subjects: Business planning -- South Africa Strategic planning -- South Africa , Seafood industry -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/21604 , vital:29716
- Description: Talhado Fishing Enterprises (Pty) Ltd is a squid fishing company founded in 1988, with sea and land based freezing facilities. Operating from the East coast situated in the Port Elizabeth harbour, the company processes and packages its caught and bought out product for sales to its export customers situated in Spain and Italy. The company is privately owned, 38.8 percent owned by previously disadvantaged persons. This study examines the whether it would be feasible to expand its operations into the USA, namely into the California area where a squid fishery exists. The study further centres around the company’s existing markets, namely Spain and Italy, to establish whether demand exists to purchase this Californian squid specie. The reason for the study is that due to legislative and political issues growth in the squid industry in South Africa is limited. It is therefore considered pertinent to source further supply of product in order to expand its business. The aim of the study is establish whether it is feasible to expand the company’s operations internationally and does the outcome of this initial study warrant the development of an in depth business plan. In order to achieve these objectives the following approach was followed: A comprehensive literature study was conducted with regard to the industry internationally and locally; Interviews was conducted with independent experts such as attorneys and industry role players situated in California; Potential sellers of businesses were sourced in the California and interviews were arranged with these role players; The response to the interviews was measured against the literature study conducted and financial statements supplied.
- Full Text:
- Date Issued: 2009
A case study of Kurt Donald Cobain
- Authors: Pieterse, Candice Belinda
- Date: 2009
- Subjects: Cobain, Kurt, 1967-1994 , Personality development -- South Africa , Developmental psychology -- South Africa , Rock musicians
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9891 , http://hdl.handle.net/10948/1157 , Cobain, Kurt, 1967-1994 , Personality development -- South Africa , Developmental psychology -- South Africa , Rock musicians
- Description: Case study research allows for an in depth study of an individual and yields relevant insight and results while examining an individual in their entirety. This approach allows the researcher to capture the uniqueness of a subject and thus provide an interesting understanding of that individual. The study is a case study of Kurt Donald Cobain. Cobain (1967-1994) was an American musician who served as songwriter, lead singer and guitarist for the band, Nirvana. He struggled with drug addiction during the last years of his life, and died on 8 April 1994 from a self-inflicted gunshot wound to his head (Sandford, 1995). The study is a single case research design, utilizing both qualitative and quantitative data. It aimed to explore and describe Kurt Cobain’s personality according to the Five Factor Model of Personality. He was chosen as the research subject by means of purposive sampling on the basis of the researcher’s interest and on his uniqueness and inspirational influences on the general public. Collected data was analyzed in accordance with Huberman and Miles’s (1994) general approach which consists of data reduction, data display and conclusion drawing and verification. Descriptive tables from the NEO-PI-R personality measure were further interpreted to provide quantitative information regarding the personality traits of the subject. The findings of this study suggest that Kurt Cobain portrayed a complex personality profile as an individual, and it appears that he experienced much distress and emotional instability within his life. However, he was able to provide the youth a means of expressing themselves through his music.
- Full Text:
- Date Issued: 2009
- Authors: Pieterse, Candice Belinda
- Date: 2009
- Subjects: Cobain, Kurt, 1967-1994 , Personality development -- South Africa , Developmental psychology -- South Africa , Rock musicians
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9891 , http://hdl.handle.net/10948/1157 , Cobain, Kurt, 1967-1994 , Personality development -- South Africa , Developmental psychology -- South Africa , Rock musicians
- Description: Case study research allows for an in depth study of an individual and yields relevant insight and results while examining an individual in their entirety. This approach allows the researcher to capture the uniqueness of a subject and thus provide an interesting understanding of that individual. The study is a case study of Kurt Donald Cobain. Cobain (1967-1994) was an American musician who served as songwriter, lead singer and guitarist for the band, Nirvana. He struggled with drug addiction during the last years of his life, and died on 8 April 1994 from a self-inflicted gunshot wound to his head (Sandford, 1995). The study is a single case research design, utilizing both qualitative and quantitative data. It aimed to explore and describe Kurt Cobain’s personality according to the Five Factor Model of Personality. He was chosen as the research subject by means of purposive sampling on the basis of the researcher’s interest and on his uniqueness and inspirational influences on the general public. Collected data was analyzed in accordance with Huberman and Miles’s (1994) general approach which consists of data reduction, data display and conclusion drawing and verification. Descriptive tables from the NEO-PI-R personality measure were further interpreted to provide quantitative information regarding the personality traits of the subject. The findings of this study suggest that Kurt Cobain portrayed a complex personality profile as an individual, and it appears that he experienced much distress and emotional instability within his life. However, he was able to provide the youth a means of expressing themselves through his music.
- Full Text:
- Date Issued: 2009
A comparison of the South African and Namibian labour dispute resolution system
- Authors: Musukubili, Felix
- Date: 2009
- Subjects: Dispute resolution (Law) -- South Africa , Dispute resolution (Law) -- Namibia , Arbitration, Industrial -- South Africa , Arbitration, Industrial -- Namibia
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10207 , http://hdl.handle.net/10948/1040 , Dispute resolution (Law) -- South Africa , Dispute resolution (Law) -- Namibia , Arbitration, Industrial -- South Africa , Arbitration, Industrial -- Namibia
- Description: The dynamic social and economic conditions in Namibia warranted a periodic review of labour legislation. Given these needs, uhe then Ministry of Labour, undertook a project in 1998, to assess the effectiveness of the first post kndependence Labour Act, 1992 (Act No 6 of 1992) a trirartite task force was established which recommended the amendment of the 1992 Act. This led to the enactment of the Labour Act, 2004 which introduced a new system of dispute prevention and resolution. However, the 2004 Act could not be put into effect in its entirety, because of its technical flaws and the fact that the Namibian Employers Federation (NEF) took issue with some of the provisions of the Act, such as leave provisions. In 2005, the Ministry of Labour and Social Welfare with its social partners undertook a complete technical review of the entire 2004 Act. As a result, In 2007, the new Labour Bill 2007 was tabled in Parliament, which eventually adopted it as the Labour Act, 2007 (Act No 11 of 2007) which became operational on the 1st November 2008. The new Labour Act, 2007 (Act No 11 of 2007) brings in sweeping changes to the familiar terrain of labour law and industrial relations practice in Namibia. The new Act, has done aware with the District Labour Court system, in its place comes the Labour Commissioner. The rudimentary dispute- settlement mechanisms of the old (first ) Labour Act, 1992 ( Act No 6 of 1992) have made way for the more sophisticated, yet speedier and more economical system of alternative dispute resolution through arbitration and conciliation by the Labour Commissioner. The Labour Act, 2007, requires parties to the labour dispute to seek conciliation before either taking industrial action or seeking adjudicative solutions to the dispute. Not only does the Labour Act, establish or makes provision for the appointment of the Labour Commissioner to provide for dispute resolution, it also permits parties to establish their own process for dispute resolution through a private arbitration route. Faced with this daunting array of untested rules and institutions, I have approached the writing of this work with some trepidation. My aim is to provide a thoroughgoing commentary on the provisions relating to dispute resolution. In the absence of much authoritative interpretation, I had to rely heavily on past practices and foreign South African precedents to identify the construction that judges and arbitrators are likely to arrive at. The present treatise provides a, comprehensive and integrated commentary for all involvement in the resolution of labour disputes in Namibia; it further provides rules and procedures which govern statutory disputes resolution through the Labour Commissioner. I sincerely hope that this paper, will prove useful to all those involved in labour law and industrial relations practice, as well as to teachers and students of this subject.
- Full Text:
- Date Issued: 2009
- Authors: Musukubili, Felix
- Date: 2009
- Subjects: Dispute resolution (Law) -- South Africa , Dispute resolution (Law) -- Namibia , Arbitration, Industrial -- South Africa , Arbitration, Industrial -- Namibia
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10207 , http://hdl.handle.net/10948/1040 , Dispute resolution (Law) -- South Africa , Dispute resolution (Law) -- Namibia , Arbitration, Industrial -- South Africa , Arbitration, Industrial -- Namibia
- Description: The dynamic social and economic conditions in Namibia warranted a periodic review of labour legislation. Given these needs, uhe then Ministry of Labour, undertook a project in 1998, to assess the effectiveness of the first post kndependence Labour Act, 1992 (Act No 6 of 1992) a trirartite task force was established which recommended the amendment of the 1992 Act. This led to the enactment of the Labour Act, 2004 which introduced a new system of dispute prevention and resolution. However, the 2004 Act could not be put into effect in its entirety, because of its technical flaws and the fact that the Namibian Employers Federation (NEF) took issue with some of the provisions of the Act, such as leave provisions. In 2005, the Ministry of Labour and Social Welfare with its social partners undertook a complete technical review of the entire 2004 Act. As a result, In 2007, the new Labour Bill 2007 was tabled in Parliament, which eventually adopted it as the Labour Act, 2007 (Act No 11 of 2007) which became operational on the 1st November 2008. The new Labour Act, 2007 (Act No 11 of 2007) brings in sweeping changes to the familiar terrain of labour law and industrial relations practice in Namibia. The new Act, has done aware with the District Labour Court system, in its place comes the Labour Commissioner. The rudimentary dispute- settlement mechanisms of the old (first ) Labour Act, 1992 ( Act No 6 of 1992) have made way for the more sophisticated, yet speedier and more economical system of alternative dispute resolution through arbitration and conciliation by the Labour Commissioner. The Labour Act, 2007, requires parties to the labour dispute to seek conciliation before either taking industrial action or seeking adjudicative solutions to the dispute. Not only does the Labour Act, establish or makes provision for the appointment of the Labour Commissioner to provide for dispute resolution, it also permits parties to establish their own process for dispute resolution through a private arbitration route. Faced with this daunting array of untested rules and institutions, I have approached the writing of this work with some trepidation. My aim is to provide a thoroughgoing commentary on the provisions relating to dispute resolution. In the absence of much authoritative interpretation, I had to rely heavily on past practices and foreign South African precedents to identify the construction that judges and arbitrators are likely to arrive at. The present treatise provides a, comprehensive and integrated commentary for all involvement in the resolution of labour disputes in Namibia; it further provides rules and procedures which govern statutory disputes resolution through the Labour Commissioner. I sincerely hope that this paper, will prove useful to all those involved in labour law and industrial relations practice, as well as to teachers and students of this subject.
- Full Text:
- Date Issued: 2009
A comprehensive university: constructing an organisational identity
- Authors: Moeng, Siphokazi Florence
- Date: 2009
- Subjects: Universities and colleges -- Mergers -- South Africa -- Port Elizabeth , Educational change -- South Africa -- Port Elizabeth , Education, Higher -- South Africa -- Port Elizabeth -- Aims and objectives , Organizational behavior -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Doctoral , DEd
- Identifier: vital:9517 , http://hdl.handle.net/10948/1029 , Universities and colleges -- Mergers -- South Africa -- Port Elizabeth , Educational change -- South Africa -- Port Elizabeth , Education, Higher -- South Africa -- Port Elizabeth -- Aims and objectives , Organizational behavior -- South Africa -- Port Elizabeth
- Description: The restructuring of higher education through incorporations and mergers has attracted a lot of attention over the past few years in South Africa. These incorporations and mergers have displaced institutions of higher education and positioned them in new organisational homes, thus subjecting faculties, schools and departments to a process of relocation, new knowledge acquisition, identity change and meaning-making processes. The merger has resulted in three types of universities; i.e. traditional universities, comprehensive universities and universities of technology. The introduction of the comprehensive university as a new institutional type has brought with it questions about the idea of the university and the purpose of higher education in general. Mergers in particular have initiated conversations about sense-making and meaning during change. Amidst all this, people within the merging institution have been confronted with a new organisation with which they have to identify. At universities in particular, questions about academic identity and organisational identity have become unavoidable. The boundaries that gave definition to a university have been (re)moved. The structure of the university, as it was known, has changed. Hence, in the newly merged NMMU, academics are in the process of internalising and giving meaning to the new organisational values and norms of a comprehensive university. Needless to say, the challenges facing the newly merged NMMU are cultural, structural and geographic. Bringing together different institutional and personal cultures involves a human dimension that needs to be nurtured by trying to form a coherent and cohesive organisation that is created from culturally diverse and uncomplementary institutions. Another challenge is bringing together different organisational structures, systems and programmes that are informed by different institutional cultures. Furthermore, the challenge of having multiple campuses that are geographically separated exacerbates the situation. Along with all these challenges, the NMMU has the task of constructing an integrated institutional identity through organisational forms and programme models that will embody the multiple functions that are typical of a comprehensive university. The aim of the current study was to explore how the meanings that academics assign to the notion of a comprehensive university are instrumental in constructing an organisational identity; describing in detail how at the NMMU academics make meaning of the comprehensive university and how that meaning-making process influences the construction of an organisational identity; and formulating recommendations based on the qualitative findings and quantitative results of the research. In an effort to achieve the aim alluded to above, this study employed the mixed methods approach that used a sequential, exploratory, transformative design. The complexity of the study was such that it required to be investigated through qualitative and quantitative analytical methods in order to confirm, triangulate and obtain a holistic picture of the situation under investigation. The sample for the qualitative interviews consisted of thirteen purposefully selected academics from all levels at the NMMU. The interviews were transcribed and coded into themes, categories and sub-categories. These themes were then developed and translated into statements for the questionnaire that was administered randomly to all NMMU academics. A total of 108 academics responded to the questionnaire. The responses to the questionnaire were analysed using the SPSS programme. The findings and results of the study revealed that there was a fairly common understanding of the term comprehensive university among academics. However, the details about its procedures appeared to be the privileged ownership of management. This situation mitigated the necessity for a sense-making process that would allow for negotiation, modification and alteration of already held assumptions. A pertinent concern amongst academics was the neglect of the ‘human factor’ during the change process. The management style also came under scrutiny, especially in terms of the facilitation and mediation of change. There was a consensus on the call for cohesion and unity that was believed to be one of the main features that would make the construction of the NMMU organisational identity possible. The vision, mission and values of the NMMU were believed to be central to the creation of cohesion and unity, which would subsequently result in the birth of an organisational culture that could inform the organisational identity of the NMMU. Strategies to actualise and realise the organisational identity were proposed by participants. Notwithstanding, the impact of the merger was identified as having a major influence in shaping the organisational identity of the NMMU.
- Full Text:
- Date Issued: 2009
- Authors: Moeng, Siphokazi Florence
- Date: 2009
- Subjects: Universities and colleges -- Mergers -- South Africa -- Port Elizabeth , Educational change -- South Africa -- Port Elizabeth , Education, Higher -- South Africa -- Port Elizabeth -- Aims and objectives , Organizational behavior -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Doctoral , DEd
- Identifier: vital:9517 , http://hdl.handle.net/10948/1029 , Universities and colleges -- Mergers -- South Africa -- Port Elizabeth , Educational change -- South Africa -- Port Elizabeth , Education, Higher -- South Africa -- Port Elizabeth -- Aims and objectives , Organizational behavior -- South Africa -- Port Elizabeth
- Description: The restructuring of higher education through incorporations and mergers has attracted a lot of attention over the past few years in South Africa. These incorporations and mergers have displaced institutions of higher education and positioned them in new organisational homes, thus subjecting faculties, schools and departments to a process of relocation, new knowledge acquisition, identity change and meaning-making processes. The merger has resulted in three types of universities; i.e. traditional universities, comprehensive universities and universities of technology. The introduction of the comprehensive university as a new institutional type has brought with it questions about the idea of the university and the purpose of higher education in general. Mergers in particular have initiated conversations about sense-making and meaning during change. Amidst all this, people within the merging institution have been confronted with a new organisation with which they have to identify. At universities in particular, questions about academic identity and organisational identity have become unavoidable. The boundaries that gave definition to a university have been (re)moved. The structure of the university, as it was known, has changed. Hence, in the newly merged NMMU, academics are in the process of internalising and giving meaning to the new organisational values and norms of a comprehensive university. Needless to say, the challenges facing the newly merged NMMU are cultural, structural and geographic. Bringing together different institutional and personal cultures involves a human dimension that needs to be nurtured by trying to form a coherent and cohesive organisation that is created from culturally diverse and uncomplementary institutions. Another challenge is bringing together different organisational structures, systems and programmes that are informed by different institutional cultures. Furthermore, the challenge of having multiple campuses that are geographically separated exacerbates the situation. Along with all these challenges, the NMMU has the task of constructing an integrated institutional identity through organisational forms and programme models that will embody the multiple functions that are typical of a comprehensive university. The aim of the current study was to explore how the meanings that academics assign to the notion of a comprehensive university are instrumental in constructing an organisational identity; describing in detail how at the NMMU academics make meaning of the comprehensive university and how that meaning-making process influences the construction of an organisational identity; and formulating recommendations based on the qualitative findings and quantitative results of the research. In an effort to achieve the aim alluded to above, this study employed the mixed methods approach that used a sequential, exploratory, transformative design. The complexity of the study was such that it required to be investigated through qualitative and quantitative analytical methods in order to confirm, triangulate and obtain a holistic picture of the situation under investigation. The sample for the qualitative interviews consisted of thirteen purposefully selected academics from all levels at the NMMU. The interviews were transcribed and coded into themes, categories and sub-categories. These themes were then developed and translated into statements for the questionnaire that was administered randomly to all NMMU academics. A total of 108 academics responded to the questionnaire. The responses to the questionnaire were analysed using the SPSS programme. The findings and results of the study revealed that there was a fairly common understanding of the term comprehensive university among academics. However, the details about its procedures appeared to be the privileged ownership of management. This situation mitigated the necessity for a sense-making process that would allow for negotiation, modification and alteration of already held assumptions. A pertinent concern amongst academics was the neglect of the ‘human factor’ during the change process. The management style also came under scrutiny, especially in terms of the facilitation and mediation of change. There was a consensus on the call for cohesion and unity that was believed to be one of the main features that would make the construction of the NMMU organisational identity possible. The vision, mission and values of the NMMU were believed to be central to the creation of cohesion and unity, which would subsequently result in the birth of an organisational culture that could inform the organisational identity of the NMMU. Strategies to actualise and realise the organisational identity were proposed by participants. Notwithstanding, the impact of the merger was identified as having a major influence in shaping the organisational identity of the NMMU.
- Full Text:
- Date Issued: 2009
A critical analysis of South Africa's general anti avoidance provisions in income tax legislation
- Authors: Haffejee, Yaasir
- Date: 2009
- Subjects: Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- Law and legislation -- South Africa , Rule of law -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8956 , http://hdl.handle.net/10948/1243 , Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- Law and legislation -- South Africa , Rule of law -- South Africa
- Description: This treatise was undertaken to critically analyse the new general anti avoidance rules (new GAAR) as set out in sections 80A to 80L of the Income Tax Act1. A discussion on the difference between tax evasion and tax avoidance was performed in the first chapter. The goals of this treatise were then set out. An analysis of the requirements for the application of the new GAAR was performed in the second chapter. The courts have historically reviewed the circumstances surrounding an arrangement when determining whether tax avoidance has occurred. The new GAAR requires the individual steps of an arrangement to be reviewed in isolation. Secondly, the courts have historically held that the purpose test, when determining the taxpayer‘s purpose, was subjective. The wording of the new GAAR indicates that this test is now objective. Thirdly, the courts have historically viewed the abnormality of an arrangement based of the surrounding circumstances. The wording of the new GAAR requires an objective view of the arrangement. An analysis of the secondary provisions contained in sections 80I, 80B and 80J of the new GAAR was performed in the third chapter. With regards to section 80B, it was submitted that the Commissioner should issue an Interpretation Note detailing all the methods ―he deems appropriate.
- Full Text:
- Date Issued: 2009
- Authors: Haffejee, Yaasir
- Date: 2009
- Subjects: Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- Law and legislation -- South Africa , Rule of law -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8956 , http://hdl.handle.net/10948/1243 , Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- Law and legislation -- South Africa , Rule of law -- South Africa
- Description: This treatise was undertaken to critically analyse the new general anti avoidance rules (new GAAR) as set out in sections 80A to 80L of the Income Tax Act1. A discussion on the difference between tax evasion and tax avoidance was performed in the first chapter. The goals of this treatise were then set out. An analysis of the requirements for the application of the new GAAR was performed in the second chapter. The courts have historically reviewed the circumstances surrounding an arrangement when determining whether tax avoidance has occurred. The new GAAR requires the individual steps of an arrangement to be reviewed in isolation. Secondly, the courts have historically held that the purpose test, when determining the taxpayer‘s purpose, was subjective. The wording of the new GAAR indicates that this test is now objective. Thirdly, the courts have historically viewed the abnormality of an arrangement based of the surrounding circumstances. The wording of the new GAAR requires an objective view of the arrangement. An analysis of the secondary provisions contained in sections 80I, 80B and 80J of the new GAAR was performed in the third chapter. With regards to section 80B, it was submitted that the Commissioner should issue an Interpretation Note detailing all the methods ―he deems appropriate.
- Full Text:
- Date Issued: 2009
A critique of baroque performance practice with specific reference to the organ preludes and fugues by Johann Sebastian Bach
- Authors: Murphy, Liesel
- Date: 2009
- Subjects: Bach, Johann Sebastian, 1685-1750 -- Organ music , Bach, Johann Sebastian, 1685-1750 -- Keyboard music , Performance practice (Music) -- History -- 17th century , Organ music -- History and criticism , Music -- 17th century -- Performance
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8509 , http://hdl.handle.net/10948/1023 , Bach, Johann Sebastian, 1685-1750 -- Organ music , Bach, Johann Sebastian, 1685-1750 -- Keyboard music , Performance practice (Music) -- History -- 17th century , Organ music -- History and criticism , Music -- 17th century -- Performance
- Description: This study aims to provide a critique of Baroque performance practice, with specific reference to the organ Preludes and Fugues of Johann Sebastian Bach. Drawing from the extensive body of literature pertaining to Bach’s keyboard music, a number of relevant issues are explored in so far as these may provide understanding of the manner in which the organ Preludes and Fugues should be performed today. These include: • The notion of Bach’s ‘generic’ keyboard works. Were the generic keyboard works as a whole intended to be performed on more than one keyboard instrument? The instrumental designations given by Bach in these works are a valuable source of information in answering this question. • The type of organ that was known to J.S. Bach and typical registration used in the Baroque, called the plenum. • Identification of the grey area that persists in the interpretation of Bach’s organ works with regard to registration, tempo, rhythm, articulation, phrasing, fingering and ornamentation. This study also engages with the current authenticity debate in musical performance as seen from the modernist and postmodernist points of view. The modernist ideal of authenticity is to “re-create” or “reconstruct” performances of Bach’s music with as much accuracy as the evidence of historical musicologists can provide. For the postmodernist, however, authenticity lies in embracing the human element of contingency in musical performance, along with a thorough grounding of such performance in historical evidence. In aligning itself with the postmodernist point of view, this study ultimately argues that we cannot learn everything there is to know about Baroque performance practice from books. Instead, in addition to historical evidence, we draw much of our understanding in this regard from our innate or tacit levels of knowing. In this regard the scholar of Bach’s organ works can draw valuable lessons from the levels of tacit knowledge of leading organ pedagogues and performers on the subject of Baroque performance practice.
- Full Text:
- Date Issued: 2009
- Authors: Murphy, Liesel
- Date: 2009
- Subjects: Bach, Johann Sebastian, 1685-1750 -- Organ music , Bach, Johann Sebastian, 1685-1750 -- Keyboard music , Performance practice (Music) -- History -- 17th century , Organ music -- History and criticism , Music -- 17th century -- Performance
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8509 , http://hdl.handle.net/10948/1023 , Bach, Johann Sebastian, 1685-1750 -- Organ music , Bach, Johann Sebastian, 1685-1750 -- Keyboard music , Performance practice (Music) -- History -- 17th century , Organ music -- History and criticism , Music -- 17th century -- Performance
- Description: This study aims to provide a critique of Baroque performance practice, with specific reference to the organ Preludes and Fugues of Johann Sebastian Bach. Drawing from the extensive body of literature pertaining to Bach’s keyboard music, a number of relevant issues are explored in so far as these may provide understanding of the manner in which the organ Preludes and Fugues should be performed today. These include: • The notion of Bach’s ‘generic’ keyboard works. Were the generic keyboard works as a whole intended to be performed on more than one keyboard instrument? The instrumental designations given by Bach in these works are a valuable source of information in answering this question. • The type of organ that was known to J.S. Bach and typical registration used in the Baroque, called the plenum. • Identification of the grey area that persists in the interpretation of Bach’s organ works with regard to registration, tempo, rhythm, articulation, phrasing, fingering and ornamentation. This study also engages with the current authenticity debate in musical performance as seen from the modernist and postmodernist points of view. The modernist ideal of authenticity is to “re-create” or “reconstruct” performances of Bach’s music with as much accuracy as the evidence of historical musicologists can provide. For the postmodernist, however, authenticity lies in embracing the human element of contingency in musical performance, along with a thorough grounding of such performance in historical evidence. In aligning itself with the postmodernist point of view, this study ultimately argues that we cannot learn everything there is to know about Baroque performance practice from books. Instead, in addition to historical evidence, we draw much of our understanding in this regard from our innate or tacit levels of knowing. In this regard the scholar of Bach’s organ works can draw valuable lessons from the levels of tacit knowledge of leading organ pedagogues and performers on the subject of Baroque performance practice.
- Full Text:
- Date Issued: 2009
A descriptive study of conflict management strategies of the Johannesburg Central Methodist Church refugee community
- Authors: Burger, Christine-Maria
- Date: 2009
- Subjects: Conflict management , Central Methodist Church Refugee Community , Refugees -- Housing -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8199 , http://hdl.handle.net/10948/1301 , Conflict management , Central Methodist Church Refugee Community , Refugees -- Housing -- South Africa -- Johannesburg
- Description: The growth of forced migration populations - i.e. the movement of people within and across national boarders as a result of conflicts, disasters, and development policies and projects - has been a defining feature of the twentieth century and will no doubt remain with us well into the twenty-first century (Rutinwa, 2001: 13). Literature searches suggest that the ‘refugee’ constitutes the most powerful label within the forced migration discourse. Published calculations regarding the number of refugees in the world at the end of 2008, range between 15.2 million (UNHCR, 2009: 2) and 13.6 million (World Refugee Survey, 2009: 33). The refugee experience of a small representative population of these figures namely, the Zimbabwean refugees living within the Central Methodist Church (CMC) or Central Methodist Mission (CMM) refugee community, in Johannesburg city centre is the concern of this treatise. From the perspective of the conflict management scholar, the informal and formal conflict management strategies adopted among and between the CMM refugees, have been studied. Analysis of existing literature, interviews conducted with the refugees, as well as hours of experience within the refugee community, substantiate the descriptive study that follows. Guided by the grounded theory approach, research findings have emerged out of the descriptions. The research findings in turn have founded the development of the recommendations that appear in the conclusion to the treatise.
- Full Text:
- Date Issued: 2009
- Authors: Burger, Christine-Maria
- Date: 2009
- Subjects: Conflict management , Central Methodist Church Refugee Community , Refugees -- Housing -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8199 , http://hdl.handle.net/10948/1301 , Conflict management , Central Methodist Church Refugee Community , Refugees -- Housing -- South Africa -- Johannesburg
- Description: The growth of forced migration populations - i.e. the movement of people within and across national boarders as a result of conflicts, disasters, and development policies and projects - has been a defining feature of the twentieth century and will no doubt remain with us well into the twenty-first century (Rutinwa, 2001: 13). Literature searches suggest that the ‘refugee’ constitutes the most powerful label within the forced migration discourse. Published calculations regarding the number of refugees in the world at the end of 2008, range between 15.2 million (UNHCR, 2009: 2) and 13.6 million (World Refugee Survey, 2009: 33). The refugee experience of a small representative population of these figures namely, the Zimbabwean refugees living within the Central Methodist Church (CMC) or Central Methodist Mission (CMM) refugee community, in Johannesburg city centre is the concern of this treatise. From the perspective of the conflict management scholar, the informal and formal conflict management strategies adopted among and between the CMM refugees, have been studied. Analysis of existing literature, interviews conducted with the refugees, as well as hours of experience within the refugee community, substantiate the descriptive study that follows. Guided by the grounded theory approach, research findings have emerged out of the descriptions. The research findings in turn have founded the development of the recommendations that appear in the conclusion to the treatise.
- Full Text:
- Date Issued: 2009
A foucaultian critique of the conception of individual subjectivity within contemporary environmental discourse
- Authors: Konik, Inge
- Date: 2009
- Subjects: Environmentalism , Environmental policy , Environmental management -- Social aspects
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8422 , http://hdl.handle.net/10948/d1016201
- Description: Certain prominent environmental theorists have accounted for and/or addressed our unmitigated environmentally damaging behavior in cognitive terms, related to a common (misplaced) belief that economic development and technological advancement, among other contemporary processes, will solve our environmental problems. However, I argue that they have not given due consideration to the complex (predominantly non-cognitive/non-conscious) discursive constitution of the individual, and thus seem to adhere to a Kantian notion of autonomy that overlooks such non-cognitive factors. Focusing on this non-cognitive aspect of discursive constitution, I ascribe our ecological apathy mainly to the fact that we have been discursively constituted as docile bodies and prostrate subjects. Further, I argue that, because this process of discursive constitution is primarily non-cognitive, any attempts to remedy our ecological apathy at a cognitive level alone will not be completely effective. Consequently, I propose that a more effective way of fostering pro-environmental dispositions may be for individuals to engage in an ethic/culture of the self that is not exclusively conceptual in orientation, and which is centered on the practice of a counter-discourse that does not constitute the individual as docile and prostrate nor negate the individual’s dependence on the environment. Alternatively, in order to engender pro-environmental civilizational change, it may be necessary to operate within the discursive parameters of dominant/popular institutions, in order to incrementally alter the discourses employed within, and disseminated through, these institutions, in a manner that would lead to the problematization, rather than the endorsement, of the ecologically deleterious technological, political and economic trajectories of our time.
- Full Text:
- Date Issued: 2009
- Authors: Konik, Inge
- Date: 2009
- Subjects: Environmentalism , Environmental policy , Environmental management -- Social aspects
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8422 , http://hdl.handle.net/10948/d1016201
- Description: Certain prominent environmental theorists have accounted for and/or addressed our unmitigated environmentally damaging behavior in cognitive terms, related to a common (misplaced) belief that economic development and technological advancement, among other contemporary processes, will solve our environmental problems. However, I argue that they have not given due consideration to the complex (predominantly non-cognitive/non-conscious) discursive constitution of the individual, and thus seem to adhere to a Kantian notion of autonomy that overlooks such non-cognitive factors. Focusing on this non-cognitive aspect of discursive constitution, I ascribe our ecological apathy mainly to the fact that we have been discursively constituted as docile bodies and prostrate subjects. Further, I argue that, because this process of discursive constitution is primarily non-cognitive, any attempts to remedy our ecological apathy at a cognitive level alone will not be completely effective. Consequently, I propose that a more effective way of fostering pro-environmental dispositions may be for individuals to engage in an ethic/culture of the self that is not exclusively conceptual in orientation, and which is centered on the practice of a counter-discourse that does not constitute the individual as docile and prostrate nor negate the individual’s dependence on the environment. Alternatively, in order to engender pro-environmental civilizational change, it may be necessary to operate within the discursive parameters of dominant/popular institutions, in order to incrementally alter the discourses employed within, and disseminated through, these institutions, in a manner that would lead to the problematization, rather than the endorsement, of the ecologically deleterious technological, political and economic trajectories of our time.
- Full Text:
- Date Issued: 2009
A framework for IT governance in small businesses
- Authors: Koornhof, Herman
- Date: 2009
- Subjects: Corporate governance -- South Africa , Organizational effectiveness -- South Africa , Organisational Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9768 , http://hdl.handle.net/10948/994 , Corporate governance -- South Africa , Organizational effectiveness -- South Africa , Organisational Management
- Description: The primary objective of this treatise is to develop a framework that small businesses can use to implement IT governance. This framework for IT 6 Governance in Small Businesses, called ITGovSB, will be based primarily on the CobiT framework and the ISO/IEC 27002 information security controls. In order to achieve the primary objective, it is necessary to understand the differences between IT governance in small businesses and larger organisations. Consequently, one of the secondary objectives of the paper is to derive characteristics that define IT governance in small businesses. Another secondary objective is to implement the ITGovSB framework at a small business to evaluate its effectiveness.
- Full Text:
- Date Issued: 2009
- Authors: Koornhof, Herman
- Date: 2009
- Subjects: Corporate governance -- South Africa , Organizational effectiveness -- South Africa , Organisational Management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9768 , http://hdl.handle.net/10948/994 , Corporate governance -- South Africa , Organizational effectiveness -- South Africa , Organisational Management
- Description: The primary objective of this treatise is to develop a framework that small businesses can use to implement IT governance. This framework for IT 6 Governance in Small Businesses, called ITGovSB, will be based primarily on the CobiT framework and the ISO/IEC 27002 information security controls. In order to achieve the primary objective, it is necessary to understand the differences between IT governance in small businesses and larger organisations. Consequently, one of the secondary objectives of the paper is to derive characteristics that define IT governance in small businesses. Another secondary objective is to implement the ITGovSB framework at a small business to evaluate its effectiveness.
- Full Text:
- Date Issued: 2009
A framework for the secure use of portable storage devices : a South African higher education perspective
- Authors: Rothman, Jonathan Sean
- Date: 2009
- Subjects: Computer storage devices , Computer storage devices -- Management , Education, Higher -- Computer network resources
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9766 , http://hdl.handle.net/10948/1054 , Computer storage devices , Computer storage devices -- Management , Education, Higher -- Computer network resources
- Description: South African Higher Education has gone through various changes and challenges, one of these being the merger process. Various Universities and Technikons were forced to merge in an effort to aid the transformation and restructuring of the Higher Education landscape in the post-apartheid era. From an ICT point of view, the merged Institutions ended up with massive and distributed computing facilities. These facilities must be managed and secured and it can be appreciated that the complexity and magnitude of this task is compounded by the large and varied user population (i.e. students) using the facilities. With the exploding use of mobile consumer devices (such as cell phones, personal digital assistants, MP3 players, portable storage devices such as flash drives, etc), Higher Education Institutions are faced with the even more complex task of managing and securing the computing infrastructure, while large numbers of students can enter computer labs and use these devices at random. In some circles, portable devices are touted to be the next panacea in higher education. This, together with the popularity these devices enjoy under the student body, makes it a fait accompli that mobile consumer devices are “here to stay”. Therefore, banning these devices from campus computer labs, is not viable. Universities have to find ways to address security issues through the implementation of appropriate protective measures. This research focuses on finding a solution to mitigating the risks imposed on Higher Education Institutions in South Africa caused by the use of portable storage devices. The research proposes a framework which serves as an outline for the countermeasures that Universities must implement to mitigate the risks inherent to the use of portable storage devices. The scope of the research is limited to flash drives, smart phones and MP3 players.
- Full Text:
- Date Issued: 2009
- Authors: Rothman, Jonathan Sean
- Date: 2009
- Subjects: Computer storage devices , Computer storage devices -- Management , Education, Higher -- Computer network resources
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9766 , http://hdl.handle.net/10948/1054 , Computer storage devices , Computer storage devices -- Management , Education, Higher -- Computer network resources
- Description: South African Higher Education has gone through various changes and challenges, one of these being the merger process. Various Universities and Technikons were forced to merge in an effort to aid the transformation and restructuring of the Higher Education landscape in the post-apartheid era. From an ICT point of view, the merged Institutions ended up with massive and distributed computing facilities. These facilities must be managed and secured and it can be appreciated that the complexity and magnitude of this task is compounded by the large and varied user population (i.e. students) using the facilities. With the exploding use of mobile consumer devices (such as cell phones, personal digital assistants, MP3 players, portable storage devices such as flash drives, etc), Higher Education Institutions are faced with the even more complex task of managing and securing the computing infrastructure, while large numbers of students can enter computer labs and use these devices at random. In some circles, portable devices are touted to be the next panacea in higher education. This, together with the popularity these devices enjoy under the student body, makes it a fait accompli that mobile consumer devices are “here to stay”. Therefore, banning these devices from campus computer labs, is not viable. Universities have to find ways to address security issues through the implementation of appropriate protective measures. This research focuses on finding a solution to mitigating the risks imposed on Higher Education Institutions in South Africa caused by the use of portable storage devices. The research proposes a framework which serves as an outline for the countermeasures that Universities must implement to mitigate the risks inherent to the use of portable storage devices. The scope of the research is limited to flash drives, smart phones and MP3 players.
- Full Text:
- Date Issued: 2009
A framework towards effective control in information security governance
- Authors: Viljoen, Melanie
- Date: 2009
- Subjects: Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9773 , http://hdl.handle.net/10948/887 , Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Description: The importance of information in business today has made the need to properly secure this asset evident. Information security has become a responsibility for all managers of an organization. To better support more efficient management of information security, timely information security management information should be made available to all managers. Smaller organizations face special challenges with regard to information security management and reporting due to limited resources (Ross, 2008). This dissertation discusses a Framework for Information Security Management Information (FISMI) that aims to improve the visibility and contribute to better management of information security throughout an organization by enabling the provision of summarized, comprehensive information security management information to all managers in an affordable manner.
- Full Text:
- Date Issued: 2009
- Authors: Viljoen, Melanie
- Date: 2009
- Subjects: Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9773 , http://hdl.handle.net/10948/887 , Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Description: The importance of information in business today has made the need to properly secure this asset evident. Information security has become a responsibility for all managers of an organization. To better support more efficient management of information security, timely information security management information should be made available to all managers. Smaller organizations face special challenges with regard to information security management and reporting due to limited resources (Ross, 2008). This dissertation discusses a Framework for Information Security Management Information (FISMI) that aims to improve the visibility and contribute to better management of information security throughout an organization by enabling the provision of summarized, comprehensive information security management information to all managers in an affordable manner.
- Full Text:
- Date Issued: 2009
A living theory to facilitate the improvement of teacher morale
- Hendricks, Charlotte Augusta
- Authors: Hendricks, Charlotte Augusta
- Date: 2009
- Subjects: Teacher morale -- South Africa -- Eastern Cape , Teachers -- Job stress , Teachers -- Workload -- South Africa , Teachers -- Job satisfaction , Teachers -- Self-rating of -- South Africa -- Eastern Cape Province , Teachers -- Attitudes
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9569 , http://hdl.handle.net/10948/d1016152
- Description: This dissertation is a narrative account of a self-study undertaken with the primary aim of positively influencing the morale of colleagues in my school department. It addresses an area of personal and professional concern where my values were being denied in my practice. As a Head of Department, I was worried that the low morale of my colleagues would negatively impact on the quality of teaching and learning at school, and on their own mental health. Situated within self-efficacy theory, my study reflects the values I attach to human dignity, respect, fairness, honesty perseverance and caring. These values were applied as the living standard by which I judged the quality of my leadership practice. I describe how I used an Action Research methodology as a living transformational process to reflect on my own leadership in terms of how I could influence the development of positive morale in the department. My findings offer new conceptualisations about how teachers can take action to improve the emotional climate of the school. I am claiming that the significance of my research is grounded in my ability to facilitate an improvement in the low morale of myself and my colleagues in order for us to ultimately contribute to self and school improvement.
- Full Text:
- Date Issued: 2009
- Authors: Hendricks, Charlotte Augusta
- Date: 2009
- Subjects: Teacher morale -- South Africa -- Eastern Cape , Teachers -- Job stress , Teachers -- Workload -- South Africa , Teachers -- Job satisfaction , Teachers -- Self-rating of -- South Africa -- Eastern Cape Province , Teachers -- Attitudes
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9569 , http://hdl.handle.net/10948/d1016152
- Description: This dissertation is a narrative account of a self-study undertaken with the primary aim of positively influencing the morale of colleagues in my school department. It addresses an area of personal and professional concern where my values were being denied in my practice. As a Head of Department, I was worried that the low morale of my colleagues would negatively impact on the quality of teaching and learning at school, and on their own mental health. Situated within self-efficacy theory, my study reflects the values I attach to human dignity, respect, fairness, honesty perseverance and caring. These values were applied as the living standard by which I judged the quality of my leadership practice. I describe how I used an Action Research methodology as a living transformational process to reflect on my own leadership in terms of how I could influence the development of positive morale in the department. My findings offer new conceptualisations about how teachers can take action to improve the emotional climate of the school. I am claiming that the significance of my research is grounded in my ability to facilitate an improvement in the low morale of myself and my colleagues in order for us to ultimately contribute to self and school improvement.
- Full Text:
- Date Issued: 2009
A longitudinal study of the occupational aspirations and perceptions of twelve to fourteen year-old South African children
- Authors: Hunter, Carrie
- Date: 2009
- Subjects: Vocational interests -- Research -- South Africa , Children -- South Africa -- Attitudes , Personality and occupation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9906 , http://hdl.handle.net/10948/968 , Vocational interests -- Research -- South Africa , Children -- South Africa -- Attitudes , Personality and occupation
- Description: While career development has been acknowledged as a lifelong process, little research attention has been given to the developmental stage of childhood. In addition, there has been a lack of longitudinal research into career development despite consistent calls for research of this nature. The lack of research and theory pertaining to childhood career development prompted the initiation of the current longitudinal project of which the present study forms a part. The longitudinal project was designed to provide information about the occupational aspirations and perceptions of a cohort of South African children from six years of age onwards, with the present studying examining the occupational aspiration development of 12 to 14 year old South African children. South African career research to date has focused primarily on adolescent and adult career development. The present longitudinal study aimed to explore and describe possible changes over a three year period in the interest typology, occupational status level and occupational gender stereotypes of the 44 participants. In addition, the study aimed to explore and describe the sample’s reflections on their own occupational aspiration development. The results of this study will provide much needed baseline information on the development of South African children’s occupational aspirations and will provide useful recommendations for the development of career education programmes. The present study was contextualised within both child and career development theories. This study was quantitative in nature as it made use of semi-structured interviews and biographical questionnaires to record verbal data which was transposed into nominal data for analysis. The semi-structured interview consisted of four broad areas that included the participants’ occupational aspirations, how many occupations they knew about, how much they knew about the identified occupations xiii and the extent to which they held gender stereotypes regarding fourteen different occupations. The data captured was coded according to Holland’s (1985) classification system of interest types. The occupational aspirations identified by participants were also coded according to their status levels. The coded data was then analysed using descriptive statistics in the form of frequency counts and percentages. In addition, content analysis was performed on the participants’ reflections on their own career development in order to elicit themes. Results from the study supported child and career development theories, emphasising childhood as a critical phase of career development. The study found that the majority of children aspired to Social type occupations across all three years of the study and most children consistently aspired to high status occupations. Furthermore, occupational gender stereotyping decreased over time. Lastly, it was found that most children were able to reflect on their career development with the majority attributing changes in their occupational aspirations to changes in their interests. The present study has provided valuable insight into the occupational aspiration development of a group of South African children, which can be used as a foundation on which to base further research and on which to develop career education programmes.
- Full Text:
- Date Issued: 2009
- Authors: Hunter, Carrie
- Date: 2009
- Subjects: Vocational interests -- Research -- South Africa , Children -- South Africa -- Attitudes , Personality and occupation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9906 , http://hdl.handle.net/10948/968 , Vocational interests -- Research -- South Africa , Children -- South Africa -- Attitudes , Personality and occupation
- Description: While career development has been acknowledged as a lifelong process, little research attention has been given to the developmental stage of childhood. In addition, there has been a lack of longitudinal research into career development despite consistent calls for research of this nature. The lack of research and theory pertaining to childhood career development prompted the initiation of the current longitudinal project of which the present study forms a part. The longitudinal project was designed to provide information about the occupational aspirations and perceptions of a cohort of South African children from six years of age onwards, with the present studying examining the occupational aspiration development of 12 to 14 year old South African children. South African career research to date has focused primarily on adolescent and adult career development. The present longitudinal study aimed to explore and describe possible changes over a three year period in the interest typology, occupational status level and occupational gender stereotypes of the 44 participants. In addition, the study aimed to explore and describe the sample’s reflections on their own occupational aspiration development. The results of this study will provide much needed baseline information on the development of South African children’s occupational aspirations and will provide useful recommendations for the development of career education programmes. The present study was contextualised within both child and career development theories. This study was quantitative in nature as it made use of semi-structured interviews and biographical questionnaires to record verbal data which was transposed into nominal data for analysis. The semi-structured interview consisted of four broad areas that included the participants’ occupational aspirations, how many occupations they knew about, how much they knew about the identified occupations xiii and the extent to which they held gender stereotypes regarding fourteen different occupations. The data captured was coded according to Holland’s (1985) classification system of interest types. The occupational aspirations identified by participants were also coded according to their status levels. The coded data was then analysed using descriptive statistics in the form of frequency counts and percentages. In addition, content analysis was performed on the participants’ reflections on their own career development in order to elicit themes. Results from the study supported child and career development theories, emphasising childhood as a critical phase of career development. The study found that the majority of children aspired to Social type occupations across all three years of the study and most children consistently aspired to high status occupations. Furthermore, occupational gender stereotyping decreased over time. Lastly, it was found that most children were able to reflect on their career development with the majority attributing changes in their occupational aspirations to changes in their interests. The present study has provided valuable insight into the occupational aspiration development of a group of South African children, which can be used as a foundation on which to base further research and on which to develop career education programmes.
- Full Text:
- Date Issued: 2009
A model for enhancing presence handling in instant messaging
- Authors: Victor, Rudi
- Date: 2009
- Subjects: Instant messaging , Mobile communication systems , Data transmission systems
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9774 , http://hdl.handle.net/10948/877 , Instant messaging , Mobile communication systems , Data transmission systems
- Description: Instant Messaging (IM) is becoming increasingly popular in social as well as workplace environments. In fact, many employees use the same IM client to communicate with both colleagues and social contacts. Thus, there are valid concerns about the impact of IM on employee productivity. One of the major advantages of IM over other workplace communication tools such as e-mail and the telephone is the implementation of presence information. In particular, presence awareness is used to determine the avail- ability and willingness of a contact to engage in communication. A current problem with IM is the one-for-all approach to presence: all contacts receive the same set of presence information. However, presence is rooted in social psychology where it is known that the awareness of another person changes the behavior of oneself. Therefore the identity of a contact affects the availability and willingness directed towards that contact. In order for presence information to be provided to contacts, it must be represented in some type of data format. The Internet Engineering Task Force (IETF) has done much work in standardizing IM and presence systems. In particular their data format for presence describes a rich set of presence information including, but not limited to, location, activity, awareness, and mood information. Such information may be sensitive and access to it needs to be controlled to ensure privacy. As with access control policies, managing the information as the number of contacts increases becomes cumbersome and complex. This dissertation draws on the theoretical foundations of presence, current standards in the domain of IM, and lessons from access control to present an enhanced presence handling model for IM. The model is developed in stages, with each stage providing a specific improvement. The first stage of the model is grounded on the current work of the IETF. As such it distributes presence on a per-watcher basis. In the second stage of the model watchers fulfill a specific role and based on this role they receive only the entrusted presence information. In practice, it implies that a "friend" may get more (or less) information than a "colleague". The third stage of the model introduces the concept of availability profiles by drawing on social awareness principles. Availability profiles add the ability to transform presence and change the presentity's behavior to incoming messages according to the provided presence information. Finally the dissertation reports on the development of the RoBIM (Role- Based Instant Messenger) prototype. RoBIM is a standards-based IM system that conforms to the IETF SIMPLE protocol and provides various standard IM features. Here, RoBIM serves as a proof-of-concept for the proposed model. This study contributed to the domain of IM and presence by addressing some of the current presence handling issues. Most importantly, the proposed model takes into account the interpersonal effects of individualizing presence information for different contacts. Thus, the model challenges conventional thought and implementation of presence in IM.
- Full Text:
- Date Issued: 2009
- Authors: Victor, Rudi
- Date: 2009
- Subjects: Instant messaging , Mobile communication systems , Data transmission systems
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9774 , http://hdl.handle.net/10948/877 , Instant messaging , Mobile communication systems , Data transmission systems
- Description: Instant Messaging (IM) is becoming increasingly popular in social as well as workplace environments. In fact, many employees use the same IM client to communicate with both colleagues and social contacts. Thus, there are valid concerns about the impact of IM on employee productivity. One of the major advantages of IM over other workplace communication tools such as e-mail and the telephone is the implementation of presence information. In particular, presence awareness is used to determine the avail- ability and willingness of a contact to engage in communication. A current problem with IM is the one-for-all approach to presence: all contacts receive the same set of presence information. However, presence is rooted in social psychology where it is known that the awareness of another person changes the behavior of oneself. Therefore the identity of a contact affects the availability and willingness directed towards that contact. In order for presence information to be provided to contacts, it must be represented in some type of data format. The Internet Engineering Task Force (IETF) has done much work in standardizing IM and presence systems. In particular their data format for presence describes a rich set of presence information including, but not limited to, location, activity, awareness, and mood information. Such information may be sensitive and access to it needs to be controlled to ensure privacy. As with access control policies, managing the information as the number of contacts increases becomes cumbersome and complex. This dissertation draws on the theoretical foundations of presence, current standards in the domain of IM, and lessons from access control to present an enhanced presence handling model for IM. The model is developed in stages, with each stage providing a specific improvement. The first stage of the model is grounded on the current work of the IETF. As such it distributes presence on a per-watcher basis. In the second stage of the model watchers fulfill a specific role and based on this role they receive only the entrusted presence information. In practice, it implies that a "friend" may get more (or less) information than a "colleague". The third stage of the model introduces the concept of availability profiles by drawing on social awareness principles. Availability profiles add the ability to transform presence and change the presentity's behavior to incoming messages according to the provided presence information. Finally the dissertation reports on the development of the RoBIM (Role- Based Instant Messenger) prototype. RoBIM is a standards-based IM system that conforms to the IETF SIMPLE protocol and provides various standard IM features. Here, RoBIM serves as a proof-of-concept for the proposed model. This study contributed to the domain of IM and presence by addressing some of the current presence handling issues. Most importantly, the proposed model takes into account the interpersonal effects of individualizing presence information for different contacts. Thus, the model challenges conventional thought and implementation of presence in IM.
- Full Text:
- Date Issued: 2009
A model for evaluating training and development initiatives in the Botswana public service
- Tshukudu, Theophilus Tebetso
- Authors: Tshukudu, Theophilus Tebetso
- Date: 2009
- Subjects: Civil service -- Personnel management -- Botswana , Civil service -- Labor productivity -- Botswana , Civil service -- Botswana -- Evaluation , Employees -- Training of , Public administration
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: vital:9384 , http://hdl.handle.net/10948/879 , Civil service -- Personnel management -- Botswana , Civil service -- Labor productivity -- Botswana , Civil service -- Botswana -- Evaluation , Employees -- Training of , Public administration
- Description: The purpose of this study was to develop an integrated model for evaluating training and development initiatives used by the Botswana public service. To achieve this goal, the following actions were taken: A literature study was conducted to identify the scope and impact of an effective training and development initiative and its evaluation; A literature study was conducted to identify strategies for evaluating training and development initiatives. The theoretical study focused on effective training and development strategies and their evaluation and critical organisational factors that contribute to successful training evaluation; The findings from the literature study were integrated into a model for evaluating training and development initiatives to be used by the Botswana public service; and This model was used as the basis for the development of a survey questionnaire to determine whether trainers, training managers and supervisors who were responsible for training and development in the public service agreed with the effective strategies for evaluating training and development developed in the study. The survey was conducted in ministries and departments in the south east district of Botswana, mainly in Gaborone, where ministries and government departments are located. The empirical results from the study showed that the majority of respondents’ training and development activities were not evaluated and that there is no link between training and development and performance management. In particular, disagreements were shown with regard to ten strategies and critical organisational factors. Evaluation of training and development in general, is an issue that organisations are challenged with on a daily basis. Lack of skills by trainers on how to evaluate training and development is one major contributing factor to this problem. An integrated and strategic approach towards the evaluation of training and development is required to effectively and constructively train and development employees according to strategic organisational goals, rather than according to individual trainee’s goals.
- Full Text:
- Date Issued: 2009
- Authors: Tshukudu, Theophilus Tebetso
- Date: 2009
- Subjects: Civil service -- Personnel management -- Botswana , Civil service -- Labor productivity -- Botswana , Civil service -- Botswana -- Evaluation , Employees -- Training of , Public administration
- Language: English
- Type: Thesis , Doctoral , DTech
- Identifier: vital:9384 , http://hdl.handle.net/10948/879 , Civil service -- Personnel management -- Botswana , Civil service -- Labor productivity -- Botswana , Civil service -- Botswana -- Evaluation , Employees -- Training of , Public administration
- Description: The purpose of this study was to develop an integrated model for evaluating training and development initiatives used by the Botswana public service. To achieve this goal, the following actions were taken: A literature study was conducted to identify the scope and impact of an effective training and development initiative and its evaluation; A literature study was conducted to identify strategies for evaluating training and development initiatives. The theoretical study focused on effective training and development strategies and their evaluation and critical organisational factors that contribute to successful training evaluation; The findings from the literature study were integrated into a model for evaluating training and development initiatives to be used by the Botswana public service; and This model was used as the basis for the development of a survey questionnaire to determine whether trainers, training managers and supervisors who were responsible for training and development in the public service agreed with the effective strategies for evaluating training and development developed in the study. The survey was conducted in ministries and departments in the south east district of Botswana, mainly in Gaborone, where ministries and government departments are located. The empirical results from the study showed that the majority of respondents’ training and development activities were not evaluated and that there is no link between training and development and performance management. In particular, disagreements were shown with regard to ten strategies and critical organisational factors. Evaluation of training and development in general, is an issue that organisations are challenged with on a daily basis. Lack of skills by trainers on how to evaluate training and development is one major contributing factor to this problem. An integrated and strategic approach towards the evaluation of training and development is required to effectively and constructively train and development employees according to strategic organisational goals, rather than according to individual trainee’s goals.
- Full Text:
- Date Issued: 2009
A model for information security control audit for small to mid-sized organisations
- Authors: Deysel, Natasha
- Date: 2009
- Subjects: Data protection , Computer networks -- Information technology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9760 , http://hdl.handle.net/10948/940 , Data protection , Computer networks -- Information technology
- Description: Organisations are increasingly dependent on their information. Compromise to this information in terms of loss, inaccuracy or competitors gaining unauthorised access could have devastating consequences for the organisation. Therefore, information security governance has become a major concern for all organisations, large and small. Information security governance is based on a set of policies and internal controls by which organisations direct and manage their information security. An effective information security governance programme should be based on a recognised framework, such as the Control Objectives for Information and related Technology (COBIT). COBIT focuses on what control objectives must be achieved in order to effectively manage the information technology environment. It has become very clear that if a company is serious about information security governance, it needs to apply the COBIT framework that deals with information security. The problem in some medium-sized organisations is that they do not realise the importance of information security governance and are either unaware of the risks or choose to ignore these risks as they do not have the expertise or resources available to provide them with assurance that they have the right information security controls in place to protect their organisation against threats.
- Full Text:
- Date Issued: 2009
- Authors: Deysel, Natasha
- Date: 2009
- Subjects: Data protection , Computer networks -- Information technology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9760 , http://hdl.handle.net/10948/940 , Data protection , Computer networks -- Information technology
- Description: Organisations are increasingly dependent on their information. Compromise to this information in terms of loss, inaccuracy or competitors gaining unauthorised access could have devastating consequences for the organisation. Therefore, information security governance has become a major concern for all organisations, large and small. Information security governance is based on a set of policies and internal controls by which organisations direct and manage their information security. An effective information security governance programme should be based on a recognised framework, such as the Control Objectives for Information and related Technology (COBIT). COBIT focuses on what control objectives must be achieved in order to effectively manage the information technology environment. It has become very clear that if a company is serious about information security governance, it needs to apply the COBIT framework that deals with information security. The problem in some medium-sized organisations is that they do not realise the importance of information security governance and are either unaware of the risks or choose to ignore these risks as they do not have the expertise or resources available to provide them with assurance that they have the right information security controls in place to protect their organisation against threats.
- Full Text:
- Date Issued: 2009
A model to improve relations between management of the Eastern Cape provincial legislature and national education health and allied workers union (NEHAWU)
- Authors: Mosana, Nombulelo Pascaline
- Date: 2009
- Subjects: Employee-management relations in government -- South Africa , Employment relations -- South Africa , Labor unions -- South Africa
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8255 , http://hdl.handle.net/10948/1026 , Employee-management relations in government -- South Africa , Employment relations -- South Africa , Labor unions -- South Africa
- Description: This study seeks to generate a model that will give rise to improved working relations between the management of the Eastern Cape Provincial Legislature and NEHAWU. In the community of the Eastern Cape Provincial Legislature there are perceptions that management and NEHAWU do not trust each other. Based on the above, the main aim of the study therefore is to investigate the truth or falsehood of the perceptions mentioned above and to generate a model. As Punch (1993:37) explains, the researcher provides the hypothesis which is the predicted answer to the research question or problem identified in the study. The formulated hypothesis in this study is that “the application of a model to improve working relations will result in improved working relations between management of the Eastern Cape Provincial Legislature and NEHAWU”. Findings revealed in the answers received from respondents prove the accuracy of the hypothesis. The methodological framework used in this investigation is the qualitative research. Winberg (1997:411) states that in using the qualitative research approach, the researcher looks at people within a specific context. An appropriate research design selected for this research project is the empirical study that utilises the primary data sourced through a survey. A v survey has been conducted targeting different respondents in the legislature community. Findings reveal that in order to improve working relations an enabling environment in the ECPL should be created. Effective and user friendly systems and standard operating procedures should be put in place. Findings also reveal that interaction between management and the union takes place mainly around bargaining issues. Managament and NEHAWU do not trust each other and as a result of that relations are poor. Again, findings reveal a strong support by management and NEHAWU for the development of a “model to improve relations between management of the Eastern Cape Provincial Legislature and NEHAWU”. After analysing and interpreting the findings, the study recommends a model that will help improve working relations between management and NEHAWU. The proposed integrated model deals with institutional strategy that is informed by national policies and legislations, structure (inclusive of MPLs, management and the labour union), systems and standard operating procedures and cultural re-invigoration. Central to this model is an effort to build a team with a common purpose. The model recognises the importance of inter-relation and inter-dependency of its various elements in order to build a successful organization and to cultivate good corporate governance.
- Full Text:
- Date Issued: 2009
- Authors: Mosana, Nombulelo Pascaline
- Date: 2009
- Subjects: Employee-management relations in government -- South Africa , Employment relations -- South Africa , Labor unions -- South Africa
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8255 , http://hdl.handle.net/10948/1026 , Employee-management relations in government -- South Africa , Employment relations -- South Africa , Labor unions -- South Africa
- Description: This study seeks to generate a model that will give rise to improved working relations between the management of the Eastern Cape Provincial Legislature and NEHAWU. In the community of the Eastern Cape Provincial Legislature there are perceptions that management and NEHAWU do not trust each other. Based on the above, the main aim of the study therefore is to investigate the truth or falsehood of the perceptions mentioned above and to generate a model. As Punch (1993:37) explains, the researcher provides the hypothesis which is the predicted answer to the research question or problem identified in the study. The formulated hypothesis in this study is that “the application of a model to improve working relations will result in improved working relations between management of the Eastern Cape Provincial Legislature and NEHAWU”. Findings revealed in the answers received from respondents prove the accuracy of the hypothesis. The methodological framework used in this investigation is the qualitative research. Winberg (1997:411) states that in using the qualitative research approach, the researcher looks at people within a specific context. An appropriate research design selected for this research project is the empirical study that utilises the primary data sourced through a survey. A v survey has been conducted targeting different respondents in the legislature community. Findings reveal that in order to improve working relations an enabling environment in the ECPL should be created. Effective and user friendly systems and standard operating procedures should be put in place. Findings also reveal that interaction between management and the union takes place mainly around bargaining issues. Managament and NEHAWU do not trust each other and as a result of that relations are poor. Again, findings reveal a strong support by management and NEHAWU for the development of a “model to improve relations between management of the Eastern Cape Provincial Legislature and NEHAWU”. After analysing and interpreting the findings, the study recommends a model that will help improve working relations between management and NEHAWU. The proposed integrated model deals with institutional strategy that is informed by national policies and legislations, structure (inclusive of MPLs, management and the labour union), systems and standard operating procedures and cultural re-invigoration. Central to this model is an effort to build a team with a common purpose. The model recognises the importance of inter-relation and inter-dependency of its various elements in order to build a successful organization and to cultivate good corporate governance.
- Full Text:
- Date Issued: 2009
A need analysis and the selection of a distribution channel for an imported meat product In South Africa
- Authors: Pintér, Judit Klementina
- Date: 2009
- Subjects: Meat industry and trade -- South Africa International trade
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11832 , vital:26977
- Description: Owing to the increase in urbanisation and disposable income, South Africa offers the food industry enormous growth opportunities. According to Louw, Jordaan, Ndanga and Kirsten (2008: 287), supermarkets have become vital role players in South African food consumption. Within this market, it is especially important to note that “preferences for high quality… foods are emerging” (Louw et al, 2008:288). This highlights the need to introduce superior quality foods to the South African food market. This study took this need one step further by asking the question, “is there a need for a high-quality foreign product in the South African market?” The primary objective of this study was to conduct a needs analysis to determine whether there is a need to introduce a selected foreign product into the South African market. The high-quality product chosen for this research is a meat product called PICK salami. In addition, the distribution channel that would be the most appropriate for the possible introduction of the product to the market was also identified in the study. To accomplish this, a relevant literature study was performed. To realise the research objective, a triangulated research approach was selected and a multiple-case study conducted. The units of analysis chosen for this study were the four major South African supermarket chains: SPAR Group Limited, Shoprite Checkers, Woolworths (Pty) limited and Pick ’n Pay Retailers (Pty) Limited. The data from this study was then analysed to determine meaningful results. From the research, it was concluded that there is a need for a high-quality meat product such as PICK Salami in South Africa and that SPAR Group Limited is the most viable distribution channel to use. Both South Africa and Hungary can benefit from such a business venture as gaps in the market can be filled and both countries can profit, despite the current global economic downturn.
- Full Text:
- Date Issued: 2009
- Authors: Pintér, Judit Klementina
- Date: 2009
- Subjects: Meat industry and trade -- South Africa International trade
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11832 , vital:26977
- Description: Owing to the increase in urbanisation and disposable income, South Africa offers the food industry enormous growth opportunities. According to Louw, Jordaan, Ndanga and Kirsten (2008: 287), supermarkets have become vital role players in South African food consumption. Within this market, it is especially important to note that “preferences for high quality… foods are emerging” (Louw et al, 2008:288). This highlights the need to introduce superior quality foods to the South African food market. This study took this need one step further by asking the question, “is there a need for a high-quality foreign product in the South African market?” The primary objective of this study was to conduct a needs analysis to determine whether there is a need to introduce a selected foreign product into the South African market. The high-quality product chosen for this research is a meat product called PICK salami. In addition, the distribution channel that would be the most appropriate for the possible introduction of the product to the market was also identified in the study. To accomplish this, a relevant literature study was performed. To realise the research objective, a triangulated research approach was selected and a multiple-case study conducted. The units of analysis chosen for this study were the four major South African supermarket chains: SPAR Group Limited, Shoprite Checkers, Woolworths (Pty) limited and Pick ’n Pay Retailers (Pty) Limited. The data from this study was then analysed to determine meaningful results. From the research, it was concluded that there is a need for a high-quality meat product such as PICK Salami in South Africa and that SPAR Group Limited is the most viable distribution channel to use. Both South Africa and Hungary can benefit from such a business venture as gaps in the market can be filled and both countries can profit, despite the current global economic downturn.
- Full Text:
- Date Issued: 2009
A potential biological role for microcystin in photosynthesis in Microcystis Aeruginosa
- Authors: Phelan, Richard Reginald
- Date: 2009
- Subjects: Microcystis aeruginosa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10320 , http://hdl.handle.net/10948/1285 , Microcystis aeruginosa
- Description: Neither the ecological role nor the metabolic function of microcystin is known. Cellular microcystin concentrations correlate to cellular nitrogen status for a given environmental phosphorous concentration and specific growth rate. Microcystin production is enhanced when the rate of nitrogen accumulation exceeds the relative specific growth rate and/or when cellular N:C ratios exceed the Redfield ratio as a function of reduced carbon fixation, suggesting enhanced production of microcystin under carbon stress. Additionally, a strong correlation between medium phosphate and carbon fixation, and the negative correlation between medium phosphate and microcystin combined with the cellular localization of microcystin in thylakoids supports a possible role for microcystin in enhancement of photosynthesis. Batch cultures of both Microcystis aeruginosa PCC7806 and a mcyA- knockout mutant of PCC7806 were therefore cultured at different light intensities and media treatments, so as to vary cellular N:C ratios and concentrations, and sampled for analysis of microcystin concentration, cell numbers and residual medium nitrates. Inter-strain differences in photosynthetic electron transfer rates and levels were monitored using a Hansatech PEA fluorometer and compared to cellular microcystin concentrations. An enhanced survival was observed at high light, where the toxic strain survived while the nontoxic strain became chlorotic. A strong correlation (r2 = 0.907, p< 0.001, N=22) between microcystin concentration and growth rate was observed at high light conditions. No such advantage was observed at optimal or low-light conditions and media composition had no significant effect on the relationship between toxicity and survival at high light. PCC7806 showed elevated PI(abs) values compared to the mcyA knockout strain, which indicates an increased stability of PSII. A strong correlation between PI(abs) and microcystin (r = 0.88, p< 0.005, N=15) was observed for cultures grown in modified BG11 containing 25 mM under continuous illumination of 37 μmol of photons m-2.s-1. No correlation was observed between PI(abs) and microcystin for the other treatments. The toxin producer had significantly higher values for density of active reaction centers and ii quantum efficiency compared to the mutant. A decrease in F0 in the mutant suggests degradation of the phycobiliproteins, whereas PCC7806 didn’t show a significant decrease in F0 Data indicate that microcystins play a role in photosynthesis by preventing chlorosis in saturating light conditions either by enhancing the redox stability of the phycobiliproteins or PS II, thus preventing photooxidation.
- Full Text:
- Date Issued: 2009
- Authors: Phelan, Richard Reginald
- Date: 2009
- Subjects: Microcystis aeruginosa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10320 , http://hdl.handle.net/10948/1285 , Microcystis aeruginosa
- Description: Neither the ecological role nor the metabolic function of microcystin is known. Cellular microcystin concentrations correlate to cellular nitrogen status for a given environmental phosphorous concentration and specific growth rate. Microcystin production is enhanced when the rate of nitrogen accumulation exceeds the relative specific growth rate and/or when cellular N:C ratios exceed the Redfield ratio as a function of reduced carbon fixation, suggesting enhanced production of microcystin under carbon stress. Additionally, a strong correlation between medium phosphate and carbon fixation, and the negative correlation between medium phosphate and microcystin combined with the cellular localization of microcystin in thylakoids supports a possible role for microcystin in enhancement of photosynthesis. Batch cultures of both Microcystis aeruginosa PCC7806 and a mcyA- knockout mutant of PCC7806 were therefore cultured at different light intensities and media treatments, so as to vary cellular N:C ratios and concentrations, and sampled for analysis of microcystin concentration, cell numbers and residual medium nitrates. Inter-strain differences in photosynthetic electron transfer rates and levels were monitored using a Hansatech PEA fluorometer and compared to cellular microcystin concentrations. An enhanced survival was observed at high light, where the toxic strain survived while the nontoxic strain became chlorotic. A strong correlation (r2 = 0.907, p< 0.001, N=22) between microcystin concentration and growth rate was observed at high light conditions. No such advantage was observed at optimal or low-light conditions and media composition had no significant effect on the relationship between toxicity and survival at high light. PCC7806 showed elevated PI(abs) values compared to the mcyA knockout strain, which indicates an increased stability of PSII. A strong correlation between PI(abs) and microcystin (r = 0.88, p< 0.005, N=15) was observed for cultures grown in modified BG11 containing 25 mM under continuous illumination of 37 μmol of photons m-2.s-1. No correlation was observed between PI(abs) and microcystin for the other treatments. The toxin producer had significantly higher values for density of active reaction centers and ii quantum efficiency compared to the mutant. A decrease in F0 in the mutant suggests degradation of the phycobiliproteins, whereas PCC7806 didn’t show a significant decrease in F0 Data indicate that microcystins play a role in photosynthesis by preventing chlorosis in saturating light conditions either by enhancing the redox stability of the phycobiliproteins or PS II, thus preventing photooxidation.
- Full Text:
- Date Issued: 2009
A preliminary investigation and photographic atlas of nodules found in the Bokkelveld group (Gydo formation), Steytlerville district, South Africa
- Authors: Browning, Claire
- Date: 2009
- Subjects: Gydo formation -- South Africa , Formations (Geology) -- South Africa -- Western Cape , Formations (Geology) -- South Africa -- Eastern Cape , Groups (Stratigraphy) -- South Africa -- Western Cape , Geology -- Stratigraphic , Bokkeveld group (South Africa)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10656 , http://hdl.handle.net/10948/927 , Gydo formation -- South Africa , Formations (Geology) -- South Africa -- Western Cape , Formations (Geology) -- South Africa -- Eastern Cape , Groups (Stratigraphy) -- South Africa -- Western Cape , Geology -- Stratigraphic , Bokkeveld group (South Africa)
- Description: Nodules within the lower Bokkeveld shales often contain well-preserved invertebrate fossil material. The aim of this study was to describe some characteristics seen at various scales (macro-, micro- and ultra -) within nodules that might contribute to an understanding of aspects of nodule formation and the reasons for the excellent preservation of the fossil material within these nodules. Detailed, high quality macro-photographs were taken of sliced and whole nodule surfaces and a catalogue was produced to tentatively identify fossils present and illustrate the variations seen within nodules. Selected nodules were then subjected to petrographic, ultra-structural (SEM) and some chemical (EDS, XRD & XRF) analysis to investigate the possible reasons for these variations. The chemical results have indicated that nodules are enriched with quartz compared to the surrounding shale. Quartz is also the dominant mineral replacing trilobite carapace material within nodules, while trilobite material within shales is replaced with equal proportions of hematite, biotite and quartz. It appears that the higher resistance of quartz to weathering is the dominant factor leading to the preservation of both nodules within the shales and trilobite material within the nodules examined. A comparison with some Western Cape nodules highlighted possible variations in overall nodule chemical composition along strike. Western Cape nodules are predominantly composed of apatite whereas the Cockscomb nodules are mainly composed of quartz. This quartz-apatite compositional variation in nodules occurring within a single formation has been reported from nodules found in the Armorican Massif of France which are very similar in a number of respects to the Bokkeveld nodules described in this study. Based on various features of the fossils present and the structure of nodules they were probably formed during early diagenesis within an epeiric marine deposit greatly affected by sea level fluctuations.
- Full Text:
- Date Issued: 2009
- Authors: Browning, Claire
- Date: 2009
- Subjects: Gydo formation -- South Africa , Formations (Geology) -- South Africa -- Western Cape , Formations (Geology) -- South Africa -- Eastern Cape , Groups (Stratigraphy) -- South Africa -- Western Cape , Geology -- Stratigraphic , Bokkeveld group (South Africa)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10656 , http://hdl.handle.net/10948/927 , Gydo formation -- South Africa , Formations (Geology) -- South Africa -- Western Cape , Formations (Geology) -- South Africa -- Eastern Cape , Groups (Stratigraphy) -- South Africa -- Western Cape , Geology -- Stratigraphic , Bokkeveld group (South Africa)
- Description: Nodules within the lower Bokkeveld shales often contain well-preserved invertebrate fossil material. The aim of this study was to describe some characteristics seen at various scales (macro-, micro- and ultra -) within nodules that might contribute to an understanding of aspects of nodule formation and the reasons for the excellent preservation of the fossil material within these nodules. Detailed, high quality macro-photographs were taken of sliced and whole nodule surfaces and a catalogue was produced to tentatively identify fossils present and illustrate the variations seen within nodules. Selected nodules were then subjected to petrographic, ultra-structural (SEM) and some chemical (EDS, XRD & XRF) analysis to investigate the possible reasons for these variations. The chemical results have indicated that nodules are enriched with quartz compared to the surrounding shale. Quartz is also the dominant mineral replacing trilobite carapace material within nodules, while trilobite material within shales is replaced with equal proportions of hematite, biotite and quartz. It appears that the higher resistance of quartz to weathering is the dominant factor leading to the preservation of both nodules within the shales and trilobite material within the nodules examined. A comparison with some Western Cape nodules highlighted possible variations in overall nodule chemical composition along strike. Western Cape nodules are predominantly composed of apatite whereas the Cockscomb nodules are mainly composed of quartz. This quartz-apatite compositional variation in nodules occurring within a single formation has been reported from nodules found in the Armorican Massif of France which are very similar in a number of respects to the Bokkeveld nodules described in this study. Based on various features of the fossils present and the structure of nodules they were probably formed during early diagenesis within an epeiric marine deposit greatly affected by sea level fluctuations.
- Full Text:
- Date Issued: 2009