The use of tax incentive measure in conjunction with carbon taxes to reduce greenhouse gas emissions and achieve economic growth: a comparative study with lessons for South Africa
- Authors: Poole, Richard
- Date: 2013
- Subjects: Elasticity (Economics) , Substitution (Economics) , Carbon taxes , Carbon taxes -- South Africa , Greenhouse gas mitigation , Greenhouse gas mitigation--South Africa , United Nations Framework Convention on Climate Change -- (1992). Protocols, etc. -- 1997 Dec. 11 , Kyoto Protocol , Substitution elasticity
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:875 , http://hdl.handle.net/10962/d1001607 , Elasticity (Economics) , Substitution (Economics) , Carbon taxes , Carbon taxes -- South Africa , Greenhouse gas mitigation , Greenhouse gas mitigation--South Africa , United Nations Framework Convention on Climate Change -- (1992). Protocols, etc. -- 1997 Dec. 11
- Description: In 1997 industrialized nations, the Third Conference of the Parties to the United Nations Framework Convention on Climate Change, met in Kyoto, Japan to sign a treaty (the “Kyoto Protocol”) in terms of which industrialized nations would be required to reduce their greenhouse gas emission by at least five percent below 1990 levels by the end of the “first commitment period” 2008-2012. South Africa is not regarded as an industrialized nation, but nonetheless acceded to the Kyoto Protocol in 2002. The literature reviewed in the present research reveals that, although idealistic, the Kyoto Protocol has been problematic. Fourteen meetings of the Conference of Parties to the Kyoto Protocol between 1997 and 2011 have achieved little more than to repeatedly defer and redefine Kyoto obligations. This research was undertaken to document the existing environmental taxation policies employed in selected international jurisdictions with a view to providing a framework for environmental tax policy formation in South Africa to assist this country in meeting its “greenhouse gas” emission targets, while at the same time promoting economic growth. A doctrinal research methodology was adopted in this study as it mainly analysed and interpreted legislation and policy documents and therefore the approach was qualitative in nature. An extensive literature survey was performed to document the various environmental policies that have been legislated in the selected jurisdictions. Comparisons were drawn with proposed tax policy measures for South Africa. The literature indicates that in the selected international jurisdictions carbon taxes achieved less-than-optimal results, largely due to political and industry-competitive agendas. With South Africa planning to introduce a carbon tax, it is submitted that the implementation of a carbon tax regime in isolation will be counter-productive, given South Africa’s economic profile. On the basis of the literature reviewed, it was concluded that South Africa should consider “recycling” carbon tax revenues within the economy to fund a broad-based tax incentive regime that will stimulate the change to non-carbon energy whilst promoting growth through sustainable development
- Full Text:
- Date Issued: 2013
- Authors: Poole, Richard
- Date: 2013
- Subjects: Elasticity (Economics) , Substitution (Economics) , Carbon taxes , Carbon taxes -- South Africa , Greenhouse gas mitigation , Greenhouse gas mitigation--South Africa , United Nations Framework Convention on Climate Change -- (1992). Protocols, etc. -- 1997 Dec. 11 , Kyoto Protocol , Substitution elasticity
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:875 , http://hdl.handle.net/10962/d1001607 , Elasticity (Economics) , Substitution (Economics) , Carbon taxes , Carbon taxes -- South Africa , Greenhouse gas mitigation , Greenhouse gas mitigation--South Africa , United Nations Framework Convention on Climate Change -- (1992). Protocols, etc. -- 1997 Dec. 11
- Description: In 1997 industrialized nations, the Third Conference of the Parties to the United Nations Framework Convention on Climate Change, met in Kyoto, Japan to sign a treaty (the “Kyoto Protocol”) in terms of which industrialized nations would be required to reduce their greenhouse gas emission by at least five percent below 1990 levels by the end of the “first commitment period” 2008-2012. South Africa is not regarded as an industrialized nation, but nonetheless acceded to the Kyoto Protocol in 2002. The literature reviewed in the present research reveals that, although idealistic, the Kyoto Protocol has been problematic. Fourteen meetings of the Conference of Parties to the Kyoto Protocol between 1997 and 2011 have achieved little more than to repeatedly defer and redefine Kyoto obligations. This research was undertaken to document the existing environmental taxation policies employed in selected international jurisdictions with a view to providing a framework for environmental tax policy formation in South Africa to assist this country in meeting its “greenhouse gas” emission targets, while at the same time promoting economic growth. A doctrinal research methodology was adopted in this study as it mainly analysed and interpreted legislation and policy documents and therefore the approach was qualitative in nature. An extensive literature survey was performed to document the various environmental policies that have been legislated in the selected jurisdictions. Comparisons were drawn with proposed tax policy measures for South Africa. The literature indicates that in the selected international jurisdictions carbon taxes achieved less-than-optimal results, largely due to political and industry-competitive agendas. With South Africa planning to introduce a carbon tax, it is submitted that the implementation of a carbon tax regime in isolation will be counter-productive, given South Africa’s economic profile. On the basis of the literature reviewed, it was concluded that South Africa should consider “recycling” carbon tax revenues within the economy to fund a broad-based tax incentive regime that will stimulate the change to non-carbon energy whilst promoting growth through sustainable development
- Full Text:
- Date Issued: 2013
The critical natural capital of the Buffalo City Municipality, South Africa : harnessing local action for biodiversity conservation
- Authors: Hagen, Brett
- Date: 2011
- Subjects: Natural resources -- South Africa -- Buffalo City , Biodiversity conservation -- South Africa -- Buffalo City , Ecosystem services -- South Africa -- Buffalo City , Nature conservation -- South Africa -- Buffalo City , Environmental protection -- South Africa -- Buffalo City , Environmental degradation -- South Africa -- Buffalo City , Restoration ecology -- South Africa -- Buffalo City
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4753 , http://hdl.handle.net/10962/d1007075 , Natural resources -- South Africa -- Buffalo City , Biodiversity conservation -- South Africa -- Buffalo City , Ecosystem services -- South Africa -- Buffalo City , Nature conservation -- South Africa -- Buffalo City , Environmental protection -- South Africa -- Buffalo City , Environmental degradation -- South Africa -- Buffalo City , Restoration ecology -- South Africa -- Buffalo City
- Description: Globally, ecosystems provide services of almost twice the value of global gross national product (Costanza et al., 2006). The Buffalo City Municipality (BCM), South Africa contains biodiversity of national and international importance (Pierce, 2003; Pierce et al., 2005). Despite this, the municipality continues to experience loss of both urban and rural biodiversity (Buffalo City Municipality, 2006a). This study sought to determine the status of biodiversity, and the potential for ecosystem services to contribute to conservation, within the BCM. Biodiversity features, including ecosystem type, species of special concern and biodiversity processes, were identified and mapped using a GIS to produce a biodiversity priority index for the BCM. Current transformation status was then mapped to determine the level of ecosystem degradation within the BCM. Priority biodiversity areas as well as individual biodiversity features were spatially overlain against current transformation status and protected areas and analysed using a GIS to determine the level of degradation and protection of BCM biodiversity. In total 3.5 % of total BCM biodiversity was protected. Of the 24 ecosystem types, 11 (45%) had less than 1% under protection, while 16 (67%) had less than five percent protected. Not restorable areas, thus completely lost to biodiversity conservation, comprised just less than a quarter of the total BCM area while un-impacted areas comprised just 12.3%. Twenty five ecosystem services were identified as being provided by intact natural ecosystems within the BCM. The natural capital providing these services was identified and mapped to produce an ecosystem service index (ESI) using a GIS. This ecosystem service index and the biodiversity priority index were overlain to determine their level of correlation. Overall ESI correlation with priority biodiversity was weak although several individual ecosystem services, including carbon sequestration, showed correlation. Using the above data layers an implementation plan and conservation framework was proposed to assist the coordination of local conservation action within the BCM. It is concluded that ecosystem services are a potentially useful tool for conservationists at the local level seeking to ensure that biodiversity has relevance to and receives protection from broader society.
- Full Text:
- Date Issued: 2011
- Authors: Hagen, Brett
- Date: 2011
- Subjects: Natural resources -- South Africa -- Buffalo City , Biodiversity conservation -- South Africa -- Buffalo City , Ecosystem services -- South Africa -- Buffalo City , Nature conservation -- South Africa -- Buffalo City , Environmental protection -- South Africa -- Buffalo City , Environmental degradation -- South Africa -- Buffalo City , Restoration ecology -- South Africa -- Buffalo City
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4753 , http://hdl.handle.net/10962/d1007075 , Natural resources -- South Africa -- Buffalo City , Biodiversity conservation -- South Africa -- Buffalo City , Ecosystem services -- South Africa -- Buffalo City , Nature conservation -- South Africa -- Buffalo City , Environmental protection -- South Africa -- Buffalo City , Environmental degradation -- South Africa -- Buffalo City , Restoration ecology -- South Africa -- Buffalo City
- Description: Globally, ecosystems provide services of almost twice the value of global gross national product (Costanza et al., 2006). The Buffalo City Municipality (BCM), South Africa contains biodiversity of national and international importance (Pierce, 2003; Pierce et al., 2005). Despite this, the municipality continues to experience loss of both urban and rural biodiversity (Buffalo City Municipality, 2006a). This study sought to determine the status of biodiversity, and the potential for ecosystem services to contribute to conservation, within the BCM. Biodiversity features, including ecosystem type, species of special concern and biodiversity processes, were identified and mapped using a GIS to produce a biodiversity priority index for the BCM. Current transformation status was then mapped to determine the level of ecosystem degradation within the BCM. Priority biodiversity areas as well as individual biodiversity features were spatially overlain against current transformation status and protected areas and analysed using a GIS to determine the level of degradation and protection of BCM biodiversity. In total 3.5 % of total BCM biodiversity was protected. Of the 24 ecosystem types, 11 (45%) had less than 1% under protection, while 16 (67%) had less than five percent protected. Not restorable areas, thus completely lost to biodiversity conservation, comprised just less than a quarter of the total BCM area while un-impacted areas comprised just 12.3%. Twenty five ecosystem services were identified as being provided by intact natural ecosystems within the BCM. The natural capital providing these services was identified and mapped to produce an ecosystem service index (ESI) using a GIS. This ecosystem service index and the biodiversity priority index were overlain to determine their level of correlation. Overall ESI correlation with priority biodiversity was weak although several individual ecosystem services, including carbon sequestration, showed correlation. Using the above data layers an implementation plan and conservation framework was proposed to assist the coordination of local conservation action within the BCM. It is concluded that ecosystem services are a potentially useful tool for conservationists at the local level seeking to ensure that biodiversity has relevance to and receives protection from broader society.
- Full Text:
- Date Issued: 2011
NetwIOC: a framework for the automated generation of network-based IOCS for malware information sharing and defence
- Authors: Rudman, Lauren Lynne
- Date: 2018
- Subjects: Malware (Computer software) , Computer networks Security measures , Computer security , Python (Computer program language)
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/60639 , vital:27809
- Description: With the substantial number of new malware variants found each day, it is useful to have an efficient way to retrieve Indicators of Compromise (IOCs) from the malware in a format suitable for sharing and detection. In the past, these indicators were manually created after inspection of binary samples and network traffic. The Cuckoo Sandbox, is an existing dynamic malware analysis system which meets the requirements for the proposed framework and was extended by adding a few custom modules. This research explored a way to automate the generation of detailed network-based IOCs in a popular format which can be used for sharing. This was done through careful filtering and analysis of the PCAP hie generated by the sandbox, and placing these values into the correct type of STIX objects using Python, Through several evaluations, analysis of what type of network traffic can be expected for the creation of IOCs was conducted, including a brief ease study that examined the effect of analysis time on the number of IOCs created. Using the automatically generated IOCs to create defence and detection mechanisms for the network was evaluated and proved successful, A proof of concept sharing platform developed for the STIX IOCs is showcased at the end of the research.
- Full Text:
- Date Issued: 2018
- Authors: Rudman, Lauren Lynne
- Date: 2018
- Subjects: Malware (Computer software) , Computer networks Security measures , Computer security , Python (Computer program language)
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/60639 , vital:27809
- Description: With the substantial number of new malware variants found each day, it is useful to have an efficient way to retrieve Indicators of Compromise (IOCs) from the malware in a format suitable for sharing and detection. In the past, these indicators were manually created after inspection of binary samples and network traffic. The Cuckoo Sandbox, is an existing dynamic malware analysis system which meets the requirements for the proposed framework and was extended by adding a few custom modules. This research explored a way to automate the generation of detailed network-based IOCs in a popular format which can be used for sharing. This was done through careful filtering and analysis of the PCAP hie generated by the sandbox, and placing these values into the correct type of STIX objects using Python, Through several evaluations, analysis of what type of network traffic can be expected for the creation of IOCs was conducted, including a brief ease study that examined the effect of analysis time on the number of IOCs created. Using the automatically generated IOCs to create defence and detection mechanisms for the network was evaluated and proved successful, A proof of concept sharing platform developed for the STIX IOCs is showcased at the end of the research.
- Full Text:
- Date Issued: 2018
An investigation of the role of physical manipulatives in the teaching and learning of measurement in Grade 8 : a case study using surface area and volume
- Authors: Chiphambo, Shakespear M E K
- Date: 2012
- Subjects: Measurement -- Study and teaching -- Research Mathematics -- Education (Secondary) -- Study and teaching Teaching -- Aids and devices -- Research
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1657 , http://hdl.handle.net/10962/d1003540
- Description: The purpose of this study is to investigate the role of physical manipulatives in the teaching and learning of measurement in Grade 8. The study focuses on how the use of physical manipulatives promotes learners' mathematical proficiency in relation to the five strands of Kilpatrick, Swafford and Findell (2001). The basis of the research is a case study in the interpretive paradigm involving 18 out of a cohort of 270 Grade 8 learners in the school where I teach. The data was collected using a range of methods including: (i) baseline assessment tasks, first piloted using 7 Grade 8 learners and then given to the target group; (ii) an intervention programme with intervention tasks; (iii) a post-intervention task; (iv) observations during the intervention; and (v) individual interviews. The results of the baseline assessment and the post-intervention tasks were analysed both quantitatively and qualitatively. My research findings indicate an overall improvement of the performance after learners engaged in using physical manipulatives. The average mark of the learners in the baseline assessment task was 23% and after the intervention programme the average mark was 31 %. The responses from the learners interviewed showed that they were motivated and that the use of physical manipulatives assisted them in understanding the concepts of measurement, in particular surface area and volume. The results of my study thus reveal that the use of physical manipulatives in teaching and learning mathematics has a positive role to play in learners' understanding of surface area and volume at the Grade 8 level. The fmdings of this case study support other research regarding the importance of using physical manipulatives in teaching and learning mathematics. They align with other findings that assert that manipulatives are essential mediating tools in the development of the conceptual and procedural understanding of mathematical concepts, clarifying and helping learners to visualize abstract mathematical concepts.
- Full Text:
- Date Issued: 2012
- Authors: Chiphambo, Shakespear M E K
- Date: 2012
- Subjects: Measurement -- Study and teaching -- Research Mathematics -- Education (Secondary) -- Study and teaching Teaching -- Aids and devices -- Research
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1657 , http://hdl.handle.net/10962/d1003540
- Description: The purpose of this study is to investigate the role of physical manipulatives in the teaching and learning of measurement in Grade 8. The study focuses on how the use of physical manipulatives promotes learners' mathematical proficiency in relation to the five strands of Kilpatrick, Swafford and Findell (2001). The basis of the research is a case study in the interpretive paradigm involving 18 out of a cohort of 270 Grade 8 learners in the school where I teach. The data was collected using a range of methods including: (i) baseline assessment tasks, first piloted using 7 Grade 8 learners and then given to the target group; (ii) an intervention programme with intervention tasks; (iii) a post-intervention task; (iv) observations during the intervention; and (v) individual interviews. The results of the baseline assessment and the post-intervention tasks were analysed both quantitatively and qualitatively. My research findings indicate an overall improvement of the performance after learners engaged in using physical manipulatives. The average mark of the learners in the baseline assessment task was 23% and after the intervention programme the average mark was 31 %. The responses from the learners interviewed showed that they were motivated and that the use of physical manipulatives assisted them in understanding the concepts of measurement, in particular surface area and volume. The results of my study thus reveal that the use of physical manipulatives in teaching and learning mathematics has a positive role to play in learners' understanding of surface area and volume at the Grade 8 level. The fmdings of this case study support other research regarding the importance of using physical manipulatives in teaching and learning mathematics. They align with other findings that assert that manipulatives are essential mediating tools in the development of the conceptual and procedural understanding of mathematical concepts, clarifying and helping learners to visualize abstract mathematical concepts.
- Full Text:
- Date Issued: 2012
The integrated development plan as a developmental tool: the case of Amahlathi Municipality
- Sokopo, Bongiwe Annette Patience
- Authors: Sokopo, Bongiwe Annette Patience
- Date: 2012
- Subjects: Local government -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8355 , http://hdl.handle.net/10948/d1020919
- Description: The study is about the Integrated Development Plan as a developmental tool for the Amahlathi municipality. The main focus of the study is to assess whether the Integrated Development Plan is used as a developmental tool in the Amahlathi municipality. Local government in South Africa has been mandated by the Constitution and other pieces of legislation like the White Paper on local government, the municipal Structures Act and the municipal Systems Act to improve the socio-economic conditions of communities to deliver services to the people and encourage communities to participate in the process of developing the Integrated Development Plan (IDP). Service delivery remains a challenge in the municipality despite the initiative of introducing the IDP to support this local municipality in fulfilling its mandate of taking services to communities. This is reflected in the municipal IDP Mayor‟s foreword where it is indicated that the infrastructure backlogs are still visible in the municipality to the extent that there are areas where there are no operations at all. Also, the report by the Co-operative Governance and Traditional Affairs in 2009 indicated that Amahlathi local municipality is among 57 municipalities in the country that have been identified as the most vulnerable and which therefore needed support for sustenance. This study details these challenges and places particular focus on the utilisation of the IDP as a developmental tool for Amahlathi Local Municipality. From the literature and responses by the respondents, it is clear that local government has to be committed to work with citizens and groups within the communities to find sustainable ways to meet their social, economic and material needs and improve their quality of life. The study is both qualitative and quantitative and questionnaires have been used as a method of collecting data. The responses and results suggested that the community members in the Amahlathi municipality were aware of the existence of the IDP. However, a lot of work still has to be done to ensure that there is development in the communities.
- Full Text:
- Date Issued: 2012
- Authors: Sokopo, Bongiwe Annette Patience
- Date: 2012
- Subjects: Local government -- South Africa -- Eastern Cape , Public administration -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8355 , http://hdl.handle.net/10948/d1020919
- Description: The study is about the Integrated Development Plan as a developmental tool for the Amahlathi municipality. The main focus of the study is to assess whether the Integrated Development Plan is used as a developmental tool in the Amahlathi municipality. Local government in South Africa has been mandated by the Constitution and other pieces of legislation like the White Paper on local government, the municipal Structures Act and the municipal Systems Act to improve the socio-economic conditions of communities to deliver services to the people and encourage communities to participate in the process of developing the Integrated Development Plan (IDP). Service delivery remains a challenge in the municipality despite the initiative of introducing the IDP to support this local municipality in fulfilling its mandate of taking services to communities. This is reflected in the municipal IDP Mayor‟s foreword where it is indicated that the infrastructure backlogs are still visible in the municipality to the extent that there are areas where there are no operations at all. Also, the report by the Co-operative Governance and Traditional Affairs in 2009 indicated that Amahlathi local municipality is among 57 municipalities in the country that have been identified as the most vulnerable and which therefore needed support for sustenance. This study details these challenges and places particular focus on the utilisation of the IDP as a developmental tool for Amahlathi Local Municipality. From the literature and responses by the respondents, it is clear that local government has to be committed to work with citizens and groups within the communities to find sustainable ways to meet their social, economic and material needs and improve their quality of life. The study is both qualitative and quantitative and questionnaires have been used as a method of collecting data. The responses and results suggested that the community members in the Amahlathi municipality were aware of the existence of the IDP. However, a lot of work still has to be done to ensure that there is development in the communities.
- Full Text:
- Date Issued: 2012
The impact of real exchange rate on exports in South Africa
- Authors: Mbewu, Asanda
- Date: 2017
- Subjects: Foreign exchange rates -- South Africa Exports -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/19015 , vital:28765
- Description: The purpose of this study is to establish the impact of real exchange rate on exports in South Africa. In conducting the empirical test, the Vector Error Correction Model and annual time series data between 1973 and 2014 has been utilised. In the model, exports are the dependent variable and the real effective exchange rates, gross domestic product, mining, agricultural, foreign direct investments, and merchandise export prices are explanatory variables. A significant inverse relationship between real effective exchange rates and exports was confirmed in line with economic theory. Except for the Gross Domestic Product which exhibited a positive relationship, all other explanatory variables displayed an inverse relationship with exports. All other variables exhibited a significant impact except for Foreign Direct Investments. Based on the findings of this study, firm and practical policy recommendations are made including a moderated adjustment of monetary and fiscal policy to ensure competitiveness on the supply side.
- Full Text:
- Date Issued: 2017
- Authors: Mbewu, Asanda
- Date: 2017
- Subjects: Foreign exchange rates -- South Africa Exports -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/19015 , vital:28765
- Description: The purpose of this study is to establish the impact of real exchange rate on exports in South Africa. In conducting the empirical test, the Vector Error Correction Model and annual time series data between 1973 and 2014 has been utilised. In the model, exports are the dependent variable and the real effective exchange rates, gross domestic product, mining, agricultural, foreign direct investments, and merchandise export prices are explanatory variables. A significant inverse relationship between real effective exchange rates and exports was confirmed in line with economic theory. Except for the Gross Domestic Product which exhibited a positive relationship, all other explanatory variables displayed an inverse relationship with exports. All other variables exhibited a significant impact except for Foreign Direct Investments. Based on the findings of this study, firm and practical policy recommendations are made including a moderated adjustment of monetary and fiscal policy to ensure competitiveness on the supply side.
- Full Text:
- Date Issued: 2017
“The Hellenistic ruler cult and Ptolemy I’s quest for legitimacy”
- Authors: Ntuli, Sihle
- Date: 2017
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/6097 , vital:21031
- Description: Alexander III died suddenly in Babylon in 323 BC. With Philip III Arrhidaeus in a mentally deficient state and Alexander IV not being of age, Alexander died without a suitable heir. The task of succeeding one of the most storied legacies in the ancient world was left to the generals of Alexander III. On his deathbed, Alexander was asked who should lead the Macedonians, of which he allegedly replied “the strongest”. Thus began the process of selecting the individual who would succeed Alexander the Great, which ended up becoming a contentious task due to Macedonian succession customs. Subsequently the ‘Successors’ quarrelled over who should succeed Alexander as the true successor. The wars of the Successors are founded on an issue of legitimacy that qualifies the notion of the strongest. Being deemed the true successor of Alexander the Great meant the opportunity to continue a period of Macedonian dominance following the reigns of Philip II and Alexander III. Alexander III is hailed as one of the most extraordinary individuals of the ancient world with his imperial campaigns being widely documented, political stability being pinpointed as one of the Macedonian strong points during the period of their dominance. The ruler cult is a point of reference for the explaining the relative political stability throughout the reign of Alexander the Great. The ruler cult can be understood as a sociopolitical construct that hybridized the notion of the ruler with that of a religious leader. The oriental influence of Alexander’s campaigns in Asia would inform the customs and practices of the divine ruler. The Macedonians’ ability to establish a presence in foreign territories made such a social construct a necessity in the task of centralizing of minds for political stability. Alexander’s rendition of the cult informed the formalized Ptolemaic ruler cult. The similarities and differences of the renditions help us to understand this political tool that Ptolemy I required in order to be deemed the true successor of Alexander the Great. The following will be an investigation into whether Ptolemy I is able to attain legitimacy, firstly as a successor to Alexander the Great, secondly as Pharaoh of Egypt.
- Full Text:
- Date Issued: 2017
- Authors: Ntuli, Sihle
- Date: 2017
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/6097 , vital:21031
- Description: Alexander III died suddenly in Babylon in 323 BC. With Philip III Arrhidaeus in a mentally deficient state and Alexander IV not being of age, Alexander died without a suitable heir. The task of succeeding one of the most storied legacies in the ancient world was left to the generals of Alexander III. On his deathbed, Alexander was asked who should lead the Macedonians, of which he allegedly replied “the strongest”. Thus began the process of selecting the individual who would succeed Alexander the Great, which ended up becoming a contentious task due to Macedonian succession customs. Subsequently the ‘Successors’ quarrelled over who should succeed Alexander as the true successor. The wars of the Successors are founded on an issue of legitimacy that qualifies the notion of the strongest. Being deemed the true successor of Alexander the Great meant the opportunity to continue a period of Macedonian dominance following the reigns of Philip II and Alexander III. Alexander III is hailed as one of the most extraordinary individuals of the ancient world with his imperial campaigns being widely documented, political stability being pinpointed as one of the Macedonian strong points during the period of their dominance. The ruler cult is a point of reference for the explaining the relative political stability throughout the reign of Alexander the Great. The ruler cult can be understood as a sociopolitical construct that hybridized the notion of the ruler with that of a religious leader. The oriental influence of Alexander’s campaigns in Asia would inform the customs and practices of the divine ruler. The Macedonians’ ability to establish a presence in foreign territories made such a social construct a necessity in the task of centralizing of minds for political stability. Alexander’s rendition of the cult informed the formalized Ptolemaic ruler cult. The similarities and differences of the renditions help us to understand this political tool that Ptolemy I required in order to be deemed the true successor of Alexander the Great. The following will be an investigation into whether Ptolemy I is able to attain legitimacy, firstly as a successor to Alexander the Great, secondly as Pharaoh of Egypt.
- Full Text:
- Date Issued: 2017
The role of drinking fathers in later contradictions and choices in the lives of married women
- Authors: Meyer, Jennifer Anne
- Date: 1997
- Subjects: Adult children of alcoholics -- Psychology
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3018 , http://hdl.handle.net/10962/d1002527 , Adult children of alcoholics -- Psychology
- Description: This qualitative, interpretive research sought to elicit explanations for certain contradictions and choices in the lives of four married women who were autonomous and assertive in their careers, yet non-assertive and compliant in their married lives. Such contradictions appeared both in their projected stories and semi-structured interviews. It had been expected that these projected stories would reveal autonomy and assertiveness, in line with the white, middle-class, feminist values of the subjects, but they had not. Explanations for these apparent contradictions were attributed to the effects of being children of alcoholic fathers. While the subjects' socialisation and vulnerability to family ideology provided certain explanations for the presence of such contradictions, an object relations account of the unconscious need to resurrect an ideal father and repair the generic family provided a more probable explanation,and accounted for their traditional gender role behaviour as ideal wives in spite of their non-traditional, feminist behaviour outside of marriage.
- Full Text:
- Date Issued: 1997
- Authors: Meyer, Jennifer Anne
- Date: 1997
- Subjects: Adult children of alcoholics -- Psychology
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3018 , http://hdl.handle.net/10962/d1002527 , Adult children of alcoholics -- Psychology
- Description: This qualitative, interpretive research sought to elicit explanations for certain contradictions and choices in the lives of four married women who were autonomous and assertive in their careers, yet non-assertive and compliant in their married lives. Such contradictions appeared both in their projected stories and semi-structured interviews. It had been expected that these projected stories would reveal autonomy and assertiveness, in line with the white, middle-class, feminist values of the subjects, but they had not. Explanations for these apparent contradictions were attributed to the effects of being children of alcoholic fathers. While the subjects' socialisation and vulnerability to family ideology provided certain explanations for the presence of such contradictions, an object relations account of the unconscious need to resurrect an ideal father and repair the generic family provided a more probable explanation,and accounted for their traditional gender role behaviour as ideal wives in spite of their non-traditional, feminist behaviour outside of marriage.
- Full Text:
- Date Issued: 1997
Vulnerability and coping strategies of the Missionvale informal settlement community to flood hazards
- Authors: Tele, Asanda
- Date: 2018
- Subjects: Squatter settlements -- South Africa -- Port Elizabeth , Urbanization -- South Africa Floods -- Health aspects Floods -- Economic aspects Floods -- South Africa -- Port Elizabeth Emergency management -- South Africa -- Port Elizabeth -- Planning
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/35796 , vital:33848
- Description: While many governments and organisations across the globe have programmes in place to control flood disasters, the challenges, unpreparedness and vulnerability to flooding in many parts of the world persist. This study used the low-lying area of Missionvale township in Nelson Mandela Bay, Eastern Cape, South Africa as a case study to investigate the extent of the vulnerability of informal settlement dwellers to flooding, and to understand how the community deals with and recovers from severe flood disasters. The study adopted both quantitative and qualitative research methodologies. The empirical data for the study was obtained through a survey of 90 residents of the area, as well as interviews with the members of the community. Fieldwork and observations were also conducted. These focused on examining the area in terms of disaster relief. Secondary data was obtained through a literature review as well as a review of legislative frameworks. The findings indicate that since 1994, the government has put in place a disaster management system but the system still needs to be reinforced as periodic severe flooding continues to destroy properties and infrastructure in many communities. Crime as well as the emergence of water-borne diseases are negative spin-offs of these disasters. The research elaborates on the coping strategies of the community to floods and makes recommendations on vulnerability and coping strategies to floods in low-income settlements in South Africa. With climate change likely to aggravate flood disasters, it is recommended that the policy directions need stakeholders to improve disaster preparedness, provide flood measures to houses and storm water drainage, develop early warning systems and improve community participation in disaster preparedness planning and efforts. In addition, it is crucial to improve post-disaster responses such as service delivery and support for the flood victims with needed resources and rebuilding of homes and lives.
- Full Text:
- Date Issued: 2018
- Authors: Tele, Asanda
- Date: 2018
- Subjects: Squatter settlements -- South Africa -- Port Elizabeth , Urbanization -- South Africa Floods -- Health aspects Floods -- Economic aspects Floods -- South Africa -- Port Elizabeth Emergency management -- South Africa -- Port Elizabeth -- Planning
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/35796 , vital:33848
- Description: While many governments and organisations across the globe have programmes in place to control flood disasters, the challenges, unpreparedness and vulnerability to flooding in many parts of the world persist. This study used the low-lying area of Missionvale township in Nelson Mandela Bay, Eastern Cape, South Africa as a case study to investigate the extent of the vulnerability of informal settlement dwellers to flooding, and to understand how the community deals with and recovers from severe flood disasters. The study adopted both quantitative and qualitative research methodologies. The empirical data for the study was obtained through a survey of 90 residents of the area, as well as interviews with the members of the community. Fieldwork and observations were also conducted. These focused on examining the area in terms of disaster relief. Secondary data was obtained through a literature review as well as a review of legislative frameworks. The findings indicate that since 1994, the government has put in place a disaster management system but the system still needs to be reinforced as periodic severe flooding continues to destroy properties and infrastructure in many communities. Crime as well as the emergence of water-borne diseases are negative spin-offs of these disasters. The research elaborates on the coping strategies of the community to floods and makes recommendations on vulnerability and coping strategies to floods in low-income settlements in South Africa. With climate change likely to aggravate flood disasters, it is recommended that the policy directions need stakeholders to improve disaster preparedness, provide flood measures to houses and storm water drainage, develop early warning systems and improve community participation in disaster preparedness planning and efforts. In addition, it is crucial to improve post-disaster responses such as service delivery and support for the flood victims with needed resources and rebuilding of homes and lives.
- Full Text:
- Date Issued: 2018
Impacts of African elephant feeding on white rhinoceros foraging opportunities
- Authors: Prinsloo, Dominique
- Date: 2017
- Subjects: Herbivores -- Ecology -- South Africa , Grassland ecology -- South Africa Animal-plant relationships -- South Africa Ecology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/13768 , vital:27306
- Description: In this study, I investigated the interaction between two megaherbivores, the African elephant and white rhinoceros, that has the potential to impact grazing lawns of which white rhino are the creators and maintainers and elephants are potentially the modifiers. I hypothesized that as elephants browse, they discard a variety of coarse woody debris onto the ground; should this woody debris (of varying amounts and sizes) fall onto grazing lawns, white rhino either move them, consume grass around the woody debris or abandon the lawn entirely. If high levels of woody debris are deposited here, grazing by white rhino is likely to be prevented, at which time I predicted that mesoherbivores would have a competitive advantage in accessing forage that white rhino cannot. I examined the mechanistic links between different levels of elephant-deposited woody debris and grass response at a point scale and feeding patch spatial scale of grazing lawns in an African savanna. In addition, I assessed the response of mesoherbivores in terms of vigilance behaviour with increasing levels of predation risk posed by increasing levels of woody debris. I present the first evidence of an indirect effect of elephant on white rhino foraging behaviour. I demonstrate how increasing levels of woody debris lead to a decreasing probability of foraging by white rhino. I also demonstrate how the probability of foraging by mesoherbivores increases as the amount of forage increases. However, since this study took place during a severe drought where resources are extremely limited, I was unable to properly separate the effects of elephant-deposited woody debris from the severe lack of rainfall on grass response and subsequently herbivore foraging behaviour. Due possibly to the drought, mesoherbivores responded less or not at all to risk factors such as woody debris therefore woody debris was not a predictor of vigilance behaviour in my study. This study contributes to our understanding of how the impacts of elephants, as ecosystem engineers, have cascading effects on savanna ecosystems. My study showed that elephant impact mediates the foraging behaviour of white rhino during a drought. However, under average rainfall periods, my original hypothesized effect of the indirect impacts of elephants on white rhino foraging and grazing lawn dynamics could still hold. This key hypothesis that I was unable to test under ‘normal’ conditions due to the drought is still valid and functionally important for understanding the ecosystem processes driving grazing lawn formation, persistence and composition in African savannas where elephants and white rhinos coexist.
- Full Text:
- Date Issued: 2017
- Authors: Prinsloo, Dominique
- Date: 2017
- Subjects: Herbivores -- Ecology -- South Africa , Grassland ecology -- South Africa Animal-plant relationships -- South Africa Ecology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/13768 , vital:27306
- Description: In this study, I investigated the interaction between two megaherbivores, the African elephant and white rhinoceros, that has the potential to impact grazing lawns of which white rhino are the creators and maintainers and elephants are potentially the modifiers. I hypothesized that as elephants browse, they discard a variety of coarse woody debris onto the ground; should this woody debris (of varying amounts and sizes) fall onto grazing lawns, white rhino either move them, consume grass around the woody debris or abandon the lawn entirely. If high levels of woody debris are deposited here, grazing by white rhino is likely to be prevented, at which time I predicted that mesoherbivores would have a competitive advantage in accessing forage that white rhino cannot. I examined the mechanistic links between different levels of elephant-deposited woody debris and grass response at a point scale and feeding patch spatial scale of grazing lawns in an African savanna. In addition, I assessed the response of mesoherbivores in terms of vigilance behaviour with increasing levels of predation risk posed by increasing levels of woody debris. I present the first evidence of an indirect effect of elephant on white rhino foraging behaviour. I demonstrate how increasing levels of woody debris lead to a decreasing probability of foraging by white rhino. I also demonstrate how the probability of foraging by mesoherbivores increases as the amount of forage increases. However, since this study took place during a severe drought where resources are extremely limited, I was unable to properly separate the effects of elephant-deposited woody debris from the severe lack of rainfall on grass response and subsequently herbivore foraging behaviour. Due possibly to the drought, mesoherbivores responded less or not at all to risk factors such as woody debris therefore woody debris was not a predictor of vigilance behaviour in my study. This study contributes to our understanding of how the impacts of elephants, as ecosystem engineers, have cascading effects on savanna ecosystems. My study showed that elephant impact mediates the foraging behaviour of white rhino during a drought. However, under average rainfall periods, my original hypothesized effect of the indirect impacts of elephants on white rhino foraging and grazing lawn dynamics could still hold. This key hypothesis that I was unable to test under ‘normal’ conditions due to the drought is still valid and functionally important for understanding the ecosystem processes driving grazing lawn formation, persistence and composition in African savannas where elephants and white rhinos coexist.
- Full Text:
- Date Issued: 2017
A social and cultural history of Grahamstown, 1812 to c1845
- Authors: Marshall, Richard Graham
- Date: 2009
- Subjects: Cities and towns -- Growth -- South Africa -- Eastern Cape Community development, Urban -- South Africa -- Eastern Cape Eastern Cape (South Africa) -- History -- 19th Century Grahamstown (South Africa) -- History -- 19th Century Grahamstown (South Africa) -- History -- Social aspects -- 19th Century Grahamstown (South Africa) -- Social conditions -- 19th Century Grahamstown (South Africa) -- Economic conditions -- 19th Century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2549 , http://hdl.handle.net/10962/d1002401
- Description: This thesis examines the development of Grahamstown from its inception in 1812 to the mid-1840s, paying particular attention to the social and cultural life of the town. It traces the economic development of the town from a military outpost to a thriving commercial settlement, noting the essential factor of the town's proximity to the Cape frontier in this process. The economic interaction between diverse groups in the town mirrors the social and cultural interaction which occurred between British settlers, Khoekhoe and Africans. The result of these interactions was the creation of a new, distinctively South African urban society and culture, despite the desire of the white settlers to reproduce a “typical” English environment in their new home. The conflict between attempts to anglicise the urban environment and the realities of Grahamstown's situation on a colonial frontier was reflected in the architecture and layout of the town. Attempts to recreate an English social environment also failed. New classes arose in the town in response to the economic opportunities available on the frontier. Although some settlers prospered, many did not, and the presence of an impoverished white working class undermines settler historians' picture of settler success and affluence. The poorest people in the town, though, were the increasing numbers of Khoekhoe and Africans who migrated from the surrounding countryside, and who were unequally incorporated into the urban community as a colonial labouring class. In response to these unique circumstances, white settlers in Grahamstown developed a powerful political and propaganda machine, which helped lay the foundations of a distinct settler identity in the eastern Cape.
- Full Text:
- Date Issued: 2009
- Authors: Marshall, Richard Graham
- Date: 2009
- Subjects: Cities and towns -- Growth -- South Africa -- Eastern Cape Community development, Urban -- South Africa -- Eastern Cape Eastern Cape (South Africa) -- History -- 19th Century Grahamstown (South Africa) -- History -- 19th Century Grahamstown (South Africa) -- History -- Social aspects -- 19th Century Grahamstown (South Africa) -- Social conditions -- 19th Century Grahamstown (South Africa) -- Economic conditions -- 19th Century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2549 , http://hdl.handle.net/10962/d1002401
- Description: This thesis examines the development of Grahamstown from its inception in 1812 to the mid-1840s, paying particular attention to the social and cultural life of the town. It traces the economic development of the town from a military outpost to a thriving commercial settlement, noting the essential factor of the town's proximity to the Cape frontier in this process. The economic interaction between diverse groups in the town mirrors the social and cultural interaction which occurred between British settlers, Khoekhoe and Africans. The result of these interactions was the creation of a new, distinctively South African urban society and culture, despite the desire of the white settlers to reproduce a “typical” English environment in their new home. The conflict between attempts to anglicise the urban environment and the realities of Grahamstown's situation on a colonial frontier was reflected in the architecture and layout of the town. Attempts to recreate an English social environment also failed. New classes arose in the town in response to the economic opportunities available on the frontier. Although some settlers prospered, many did not, and the presence of an impoverished white working class undermines settler historians' picture of settler success and affluence. The poorest people in the town, though, were the increasing numbers of Khoekhoe and Africans who migrated from the surrounding countryside, and who were unequally incorporated into the urban community as a colonial labouring class. In response to these unique circumstances, white settlers in Grahamstown developed a powerful political and propaganda machine, which helped lay the foundations of a distinct settler identity in the eastern Cape.
- Full Text:
- Date Issued: 2009
An investigation into the relationship between adolescent parasuicide, depressive illness and associated risk factors
- Authors: Read, Gary Frank Hoyland
- Date: 1996
- Subjects: Youth -- Suicidal behavior , Depression in adolescence
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3116 , http://hdl.handle.net/10962/d1004615 , Youth -- Suicidal behavior , Depression in adolescence
- Description: This study aimed at investigating the relationship between adolescent parasuicide, depressive illness and associated risk factors. Reports worldwide indicate that suicidal behaviour in this age group has risen 150% over the past 20 years, whilst the rate for suicide in adults and the elderly has remained the same (Deykin et al, 1985; Neiger & Hopkins, 1988; Sudak, Ford & Rushforth, 1984a). In South Africa statistics confirm similar trends with regard to attempted and completed suicide. Statistics reveal that a high local incidence of adolescent suicide attempters are seen at psychiatric units. One pilot study recorded 187 adolescent suicide attempters during a three month period. This study was based on the hypothesis that the incidence of depressive illness in adolescent suicide attempters is higher than is generally accepted and that this condition often goes unrecognised and is misdiagnosed because it manifests differently with acting out behaviour and "masked" symptomatology. A random sample of suicide attempters between the ages of 13 - 25 who presented at C23 (psychiatric emergencies) Groote Schuur Hospital following a suicide attempt were assessed. 100 subjects were seen over a period of three months. The research procedure comprised a comprehensive assessment incorporating a semi-structured interview, self-report and objective rating scales for depression as well as instruments designed to assess the general health of each subject and their level of suicide intent. The depressive inventories used have been validated for use in this age group and were designed to elicit the associated features of adolescent depression. If warranted, a clinical diagnoses was given based on DSM 1V criteria. This diagnosis was substantiated by information from the research instruments which formed part of the assessment process. A high incidence of clinical disorders was diagnosed in the sample (86%). Depressive illness was found to be a significant risk factor for suicidal behaviour with 68% of the subjects suffering from an affective disorder and 21% reporting depressive symptoms. This study shows that the correlation between parasuicide and depressive illness is high enough to suggest that all suicidal behaviour in this age group should be taken seriously as parasuicide in itself is often a reliable indicator of an underlying depressive condition. Additional risk factors for adolescent parasuicide identified in this study correlated well with the findings of similar research studies. Psychiatric co-morbidity, especially substance use (42%) and cluster B personality factors (54%), were high and served to increase an individual's vulnerability to suicide risk. Psychosocial factors such as sexual abuse (28%) and physical abuse (37%) were also identified as high risk factors for adolescent suicidal behaviour. Individuals at risk for depression and suicidal behaviour typically came from broken homes which were disrupted and unsupportive. Family members were frequently abusing alcohol and 67% of the subjects reported the presence of psychiatric illness in the family. The preferred method of suicide attempt was an overdose (90%). These attempts were generally unplanned and impulsive with no disclosure prior to the event. Intent was usually high at the time of the act. It is only through identifying the risk factors specific to the developmental concerns of this age group and acknowledging the role of depressive illness in adolescent suicidal behaviour that effective preventative measures can be devised.
- Full Text:
- Date Issued: 1996
- Authors: Read, Gary Frank Hoyland
- Date: 1996
- Subjects: Youth -- Suicidal behavior , Depression in adolescence
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3116 , http://hdl.handle.net/10962/d1004615 , Youth -- Suicidal behavior , Depression in adolescence
- Description: This study aimed at investigating the relationship between adolescent parasuicide, depressive illness and associated risk factors. Reports worldwide indicate that suicidal behaviour in this age group has risen 150% over the past 20 years, whilst the rate for suicide in adults and the elderly has remained the same (Deykin et al, 1985; Neiger & Hopkins, 1988; Sudak, Ford & Rushforth, 1984a). In South Africa statistics confirm similar trends with regard to attempted and completed suicide. Statistics reveal that a high local incidence of adolescent suicide attempters are seen at psychiatric units. One pilot study recorded 187 adolescent suicide attempters during a three month period. This study was based on the hypothesis that the incidence of depressive illness in adolescent suicide attempters is higher than is generally accepted and that this condition often goes unrecognised and is misdiagnosed because it manifests differently with acting out behaviour and "masked" symptomatology. A random sample of suicide attempters between the ages of 13 - 25 who presented at C23 (psychiatric emergencies) Groote Schuur Hospital following a suicide attempt were assessed. 100 subjects were seen over a period of three months. The research procedure comprised a comprehensive assessment incorporating a semi-structured interview, self-report and objective rating scales for depression as well as instruments designed to assess the general health of each subject and their level of suicide intent. The depressive inventories used have been validated for use in this age group and were designed to elicit the associated features of adolescent depression. If warranted, a clinical diagnoses was given based on DSM 1V criteria. This diagnosis was substantiated by information from the research instruments which formed part of the assessment process. A high incidence of clinical disorders was diagnosed in the sample (86%). Depressive illness was found to be a significant risk factor for suicidal behaviour with 68% of the subjects suffering from an affective disorder and 21% reporting depressive symptoms. This study shows that the correlation between parasuicide and depressive illness is high enough to suggest that all suicidal behaviour in this age group should be taken seriously as parasuicide in itself is often a reliable indicator of an underlying depressive condition. Additional risk factors for adolescent parasuicide identified in this study correlated well with the findings of similar research studies. Psychiatric co-morbidity, especially substance use (42%) and cluster B personality factors (54%), were high and served to increase an individual's vulnerability to suicide risk. Psychosocial factors such as sexual abuse (28%) and physical abuse (37%) were also identified as high risk factors for adolescent suicidal behaviour. Individuals at risk for depression and suicidal behaviour typically came from broken homes which were disrupted and unsupportive. Family members were frequently abusing alcohol and 67% of the subjects reported the presence of psychiatric illness in the family. The preferred method of suicide attempt was an overdose (90%). These attempts were generally unplanned and impulsive with no disclosure prior to the event. Intent was usually high at the time of the act. It is only through identifying the risk factors specific to the developmental concerns of this age group and acknowledging the role of depressive illness in adolescent suicidal behaviour that effective preventative measures can be devised.
- Full Text:
- Date Issued: 1996
Overview and comparison of Besshi-type deposits ancient and recent
- Authors: Schoeman, Philo
- Date: 1996
- Subjects: Ore deposits -- Japan , Ore deposits -- Canada , Ore deposits -- Namibia , Ore deposits -- South Africa , Ore deposits
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4983 , http://hdl.handle.net/10962/d1005595 , Ore deposits -- Japan , Ore deposits -- Canada , Ore deposits -- Namibia , Ore deposits -- South Africa , Ore deposits
- Description: Besshi-type deposits range in age from early Proterozoic to early Tertiary, of which the largest number are late Proterozoic, early Palaeozoic or Mesozoic in age. No Archaean examples of Besshi-type deposits are known, probably due to insufficient availability of sialic crust for erosion and clastic marine sedimentation before the start of the Proterozoic. All Besshi-type deposits are contained within sequences of clastic sedimentary rock and intercalated basalts in a marine environment. The basalts and amphibolites are principally tholeiitic in composition. Besshi-type deposits characteristically form stratiform 1enses and sheet-like accumulations of semi-massive to massive sulphide. The main ore assemblage consists dominantly of pyrite and/or pyrrhotite with variable amounts of chalcopyrite, sphalerite and trace galena, arsenopyrite, gold and e1ectrum, barite being absent in general. The median Besshi-type deposit (n=75) contains 1.3 million tonnes (Mt) of massive sulphide with a Cu grade running at 1.43%. It is suggested that Besshi-type deposits form by both exhalative and synsedimentary replacement processes when considering geological features and comparisons with modern analogues in the Guaymas Basin, Middle Valley and Escanaba Trough. The currently forming metalliferous sediments in the Red Sea provide for a brine pool model explaining the lack of footwall feeder zones below sheet-like deposits. Where thick sulphide lenses are contained in some Besshi-type deposits, combinations of exhalative precipitation and sub-sea-floor replacement of permeable sediments and/or volcanic rocks, take place in the upper parts of submarine hydrothermal systems.
- Full Text:
- Date Issued: 1996
- Authors: Schoeman, Philo
- Date: 1996
- Subjects: Ore deposits -- Japan , Ore deposits -- Canada , Ore deposits -- Namibia , Ore deposits -- South Africa , Ore deposits
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4983 , http://hdl.handle.net/10962/d1005595 , Ore deposits -- Japan , Ore deposits -- Canada , Ore deposits -- Namibia , Ore deposits -- South Africa , Ore deposits
- Description: Besshi-type deposits range in age from early Proterozoic to early Tertiary, of which the largest number are late Proterozoic, early Palaeozoic or Mesozoic in age. No Archaean examples of Besshi-type deposits are known, probably due to insufficient availability of sialic crust for erosion and clastic marine sedimentation before the start of the Proterozoic. All Besshi-type deposits are contained within sequences of clastic sedimentary rock and intercalated basalts in a marine environment. The basalts and amphibolites are principally tholeiitic in composition. Besshi-type deposits characteristically form stratiform 1enses and sheet-like accumulations of semi-massive to massive sulphide. The main ore assemblage consists dominantly of pyrite and/or pyrrhotite with variable amounts of chalcopyrite, sphalerite and trace galena, arsenopyrite, gold and e1ectrum, barite being absent in general. The median Besshi-type deposit (n=75) contains 1.3 million tonnes (Mt) of massive sulphide with a Cu grade running at 1.43%. It is suggested that Besshi-type deposits form by both exhalative and synsedimentary replacement processes when considering geological features and comparisons with modern analogues in the Guaymas Basin, Middle Valley and Escanaba Trough. The currently forming metalliferous sediments in the Red Sea provide for a brine pool model explaining the lack of footwall feeder zones below sheet-like deposits. Where thick sulphide lenses are contained in some Besshi-type deposits, combinations of exhalative precipitation and sub-sea-floor replacement of permeable sediments and/or volcanic rocks, take place in the upper parts of submarine hydrothermal systems.
- Full Text:
- Date Issued: 1996
Historical perspectives and future directions for access to land, water and related ecosystem services in the Lower Sundays River Valley, South Africa: implications for human well being
- Authors: Chadzingwa, Karabo
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/442 , vital:19959
- Description: The legacy of South Africa’s history has facilitated unequal access to land and water resources. In the Lower Sundays River Valley (LSRV), a predominantly commercial farming area, differential access to land and water has impacted aspects of ecosystem service access and human well‐being for disenfranchised families over time. Despite the social, political and economic reform efforts in the past two decades, severe inertia towards efforts attempting to increase equitable access to land and water has been experienced. As a result, communities have mobilized and claimed their land from the government through the land restitution process. Based on a mixed‐methods approach, this research explores the ways in which access to land and water over time has influenced current levels of human well‐being among disenfranchised families. Provisioning and cultural ecosystem services were identified as key areas of loss as a result of forced evictions from land. Freedom of choice was a central and cross‐cutting theme regarding the ability to change levels of human well‐being. Although the loss of ecosystem services associated with land and water had an impact on households, the ecosystem services which are regarded as fundamental to human well‐being do not seem to have been lost. The study recommends the wide use of freedom of choice as an indicator for well‐being in the LSRV, as well as a consideration of subjective, objective and psychological measures of well‐being with regards to natural resources and ecosystem services access. Key agents in fostering desirable pathways toward equity and sustainability in the LSRV are identified with stakeholders as private businesses; inclusive governance; empowered and skilled individuals, as well as NGOs.
- Full Text:
- Date Issued: 2016
- Authors: Chadzingwa, Karabo
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/442 , vital:19959
- Description: The legacy of South Africa’s history has facilitated unequal access to land and water resources. In the Lower Sundays River Valley (LSRV), a predominantly commercial farming area, differential access to land and water has impacted aspects of ecosystem service access and human well‐being for disenfranchised families over time. Despite the social, political and economic reform efforts in the past two decades, severe inertia towards efforts attempting to increase equitable access to land and water has been experienced. As a result, communities have mobilized and claimed their land from the government through the land restitution process. Based on a mixed‐methods approach, this research explores the ways in which access to land and water over time has influenced current levels of human well‐being among disenfranchised families. Provisioning and cultural ecosystem services were identified as key areas of loss as a result of forced evictions from land. Freedom of choice was a central and cross‐cutting theme regarding the ability to change levels of human well‐being. Although the loss of ecosystem services associated with land and water had an impact on households, the ecosystem services which are regarded as fundamental to human well‐being do not seem to have been lost. The study recommends the wide use of freedom of choice as an indicator for well‐being in the LSRV, as well as a consideration of subjective, objective and psychological measures of well‐being with regards to natural resources and ecosystem services access. Key agents in fostering desirable pathways toward equity and sustainability in the LSRV are identified with stakeholders as private businesses; inclusive governance; empowered and skilled individuals, as well as NGOs.
- Full Text:
- Date Issued: 2016
An anthropological perspective of destitute families in the Walmer Township, Port Elizabeth
- Authors: Thornton, Jessica Leigh
- Date: 2016
- Subjects: Poverty -- South Africa -- Port Elizabeth Families, Black -- South Africa -- Social conditions , Economic assistance, Domestic -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/45690 , vital:38927
- Description: It is noticeable that poverty and deprivation exists in all forms in most, if not all, societies. Poverty and destitution have led to the formation and development of rural settlements within an urban context, which is known as informal housing. An example of this is Port Elizabeth’s Walmer Township. Walmer Township is seen to be one of the poorest informal settlements within the Eastern Cape, and has common problems of unemployment, violence, substance abuse, HIV/Aids and illiteracy. These problems adversely affect the community’s living conditions and plummets the society further into a state of destitution. In a last attempt to alleviate poverty among communities, such as the Walmer Township, organizations and external agencies have stepped in to reduce the harmful effects caused by poverty. These include shelters, feeding schemes and job empowerment. However, questions as to whether these organizations actually assist those living in poverty, and how can the organizations or current policy be improved, still exist and are raised regularly today. Thus, the research attempts to investigate the social effects of poverty and how it compromises family units, in order to understand what external organizations are in place to assist these families in destitution, and to come up with recommendations with the view of improving the existing policy
- Full Text:
- Date Issued: 2016
- Authors: Thornton, Jessica Leigh
- Date: 2016
- Subjects: Poverty -- South Africa -- Port Elizabeth Families, Black -- South Africa -- Social conditions , Economic assistance, Domestic -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/45690 , vital:38927
- Description: It is noticeable that poverty and deprivation exists in all forms in most, if not all, societies. Poverty and destitution have led to the formation and development of rural settlements within an urban context, which is known as informal housing. An example of this is Port Elizabeth’s Walmer Township. Walmer Township is seen to be one of the poorest informal settlements within the Eastern Cape, and has common problems of unemployment, violence, substance abuse, HIV/Aids and illiteracy. These problems adversely affect the community’s living conditions and plummets the society further into a state of destitution. In a last attempt to alleviate poverty among communities, such as the Walmer Township, organizations and external agencies have stepped in to reduce the harmful effects caused by poverty. These include shelters, feeding schemes and job empowerment. However, questions as to whether these organizations actually assist those living in poverty, and how can the organizations or current policy be improved, still exist and are raised regularly today. Thus, the research attempts to investigate the social effects of poverty and how it compromises family units, in order to understand what external organizations are in place to assist these families in destitution, and to come up with recommendations with the view of improving the existing policy
- Full Text:
- Date Issued: 2016
Inflation threshold and nonlinearity: implications for inflation targeting in South Africa
- Authors: Morar, Derwina
- Date: 2011
- Subjects: Inflation targeting -- South Africa Interest rates -- Effect of inflation on -- South Africa Monetary policy -- South Africa Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:984 , http://hdl.handle.net/10962/d1002718
- Description: Following many other central banks around the world, the South African Reserve Bank has adopted inflation targeting as its monetary policy framework. The aim of this is to achieve low levels of inflation in order to attain price stability thereby promoting growth. In South Africa, the chosen band to target is 3%–6%. This has been criticised by many trade unions who are calling for the abandonment of inflation targeting. Despite targeting 3%–6%, it is not known whether this is the optimal inflation range for South Africa. Therefore, the aim of this study is to determine the inflation threshold level for South Africa using quarterly data for the period 1983 to 2010. The first section determines whether or not there is a long-run relationship between inflation and growth using the Johansen cointegration method. Exogeneity tests determine the causality between these variables. Vector error correction models are estimated if cointegration is found. The second part determines the threshold level of inflation using the method of conditional least squares. The inflation level that maximises the R-squared value and minimises the residual sum of squares gives an indication of the threshold level. The third part of the study determines whether or not inflation volatility has a significant impact on growth. The first part established that there is long-run comovement between inflation and growth.The causality is bidirectional with both variables being endogenous.Findings regarding the threshold level show that the current inflation targeting band of 3%–6% may be extended up to 9.5%. In addition, the range of inflation from 5.5% to 6.5% promotes economic growth in South Africa. Finally, the evidence suggests that inflation volatility does not have a significant impact on economic growth and the focus of policy should be directed towards the level of inflation as has been the case.
- Full Text:
- Date Issued: 2011
- Authors: Morar, Derwina
- Date: 2011
- Subjects: Inflation targeting -- South Africa Interest rates -- Effect of inflation on -- South Africa Monetary policy -- South Africa Economic development -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:984 , http://hdl.handle.net/10962/d1002718
- Description: Following many other central banks around the world, the South African Reserve Bank has adopted inflation targeting as its monetary policy framework. The aim of this is to achieve low levels of inflation in order to attain price stability thereby promoting growth. In South Africa, the chosen band to target is 3%–6%. This has been criticised by many trade unions who are calling for the abandonment of inflation targeting. Despite targeting 3%–6%, it is not known whether this is the optimal inflation range for South Africa. Therefore, the aim of this study is to determine the inflation threshold level for South Africa using quarterly data for the period 1983 to 2010. The first section determines whether or not there is a long-run relationship between inflation and growth using the Johansen cointegration method. Exogeneity tests determine the causality between these variables. Vector error correction models are estimated if cointegration is found. The second part determines the threshold level of inflation using the method of conditional least squares. The inflation level that maximises the R-squared value and minimises the residual sum of squares gives an indication of the threshold level. The third part of the study determines whether or not inflation volatility has a significant impact on growth. The first part established that there is long-run comovement between inflation and growth.The causality is bidirectional with both variables being endogenous.Findings regarding the threshold level show that the current inflation targeting band of 3%–6% may be extended up to 9.5%. In addition, the range of inflation from 5.5% to 6.5% promotes economic growth in South Africa. Finally, the evidence suggests that inflation volatility does not have a significant impact on economic growth and the focus of policy should be directed towards the level of inflation as has been the case.
- Full Text:
- Date Issued: 2011
Service quality importance-performance analysis as a strategic tool for management : the exploration of key customer satisfaction drivers in a South African electricity utility
- Authors: MacColl, Barry
- Date: 2004
- Subjects: Eskom (Firm) Electric power distribution -- Customer services -- South Africa -- Eastern Cape Electric power distribution -- South Africa -- Eastern Cape -- Quality control Customer services -- Quality control Customer services -- Rating of -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:806 , http://hdl.handle.net/10962/d1006972
- Description: This research was initiated due to declining customer satisfaction indices in the Southern region of Eskom, an electricity utility in South Africa. Given the link between customer satisfaction and purchase intentions, the sustainability of the business is at stake. The validity of the current MaxiCare survey tool is questioned and explored, as is the congruence of management and customers' perceptions regarding the key service quality constructs in the industry. The study's objective was to provide management with a reliable and valid customer satisfaction survey instrument as an alternate to the existing tool and to use the knowledge gained through the research process to recommend improvement strategies aimed at closing specific satisfaction gaps identified. The research was performed in two stages; firstly, semistructured interviews with customers and management to gain an understanding of the most important satisfaction dimensions. These influenced the design of a survey instrument based largely on the SERVPERF tool with the inclusion of importance ratings per item in the second stage. The quantitative survey results were used to assess the reliability and validity of the research and to suggest areas for future work. The results show that communication, quality of supply, assurance and price are uppermost in the consumer's mind. Tangibles are not significant and the inclusion of empathy is inconclusive. Management and customer perceptions at a macro level are closely aligned, however the two populations are not in agreement as to the underlying micro considerations. Similarly, the MaxiCare instrument is found to be valid as a macro indicator but lacks sufficient detail to be useful as a strategic tool and needs to be supplemented with additional sources of market information. The survey instrument used in the second phase is both descriptive and reliable but the number of factors it measures, the mix of items and the inclusion of the 'importance' dimension need further refinement to improve its validity. Future revisions of the tool will provide management with specific information that allows them to focus improvement strategies on disgruntled customers and their key service issues.
- Full Text:
- Date Issued: 2004
- Authors: MacColl, Barry
- Date: 2004
- Subjects: Eskom (Firm) Electric power distribution -- Customer services -- South Africa -- Eastern Cape Electric power distribution -- South Africa -- Eastern Cape -- Quality control Customer services -- Quality control Customer services -- Rating of -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:806 , http://hdl.handle.net/10962/d1006972
- Description: This research was initiated due to declining customer satisfaction indices in the Southern region of Eskom, an electricity utility in South Africa. Given the link between customer satisfaction and purchase intentions, the sustainability of the business is at stake. The validity of the current MaxiCare survey tool is questioned and explored, as is the congruence of management and customers' perceptions regarding the key service quality constructs in the industry. The study's objective was to provide management with a reliable and valid customer satisfaction survey instrument as an alternate to the existing tool and to use the knowledge gained through the research process to recommend improvement strategies aimed at closing specific satisfaction gaps identified. The research was performed in two stages; firstly, semistructured interviews with customers and management to gain an understanding of the most important satisfaction dimensions. These influenced the design of a survey instrument based largely on the SERVPERF tool with the inclusion of importance ratings per item in the second stage. The quantitative survey results were used to assess the reliability and validity of the research and to suggest areas for future work. The results show that communication, quality of supply, assurance and price are uppermost in the consumer's mind. Tangibles are not significant and the inclusion of empathy is inconclusive. Management and customer perceptions at a macro level are closely aligned, however the two populations are not in agreement as to the underlying micro considerations. Similarly, the MaxiCare instrument is found to be valid as a macro indicator but lacks sufficient detail to be useful as a strategic tool and needs to be supplemented with additional sources of market information. The survey instrument used in the second phase is both descriptive and reliable but the number of factors it measures, the mix of items and the inclusion of the 'importance' dimension need further refinement to improve its validity. Future revisions of the tool will provide management with specific information that allows them to focus improvement strategies on disgruntled customers and their key service issues.
- Full Text:
- Date Issued: 2004
Evaluating the need for an Employee Performance Management System in the Eastern Cape Buffalo City Metropolitan Municipality (2012)
- Authors: Mthembu, Bhekisisa Jacob
- Date: 2013
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11686 , http://hdl.handle.net/10353/d1013579
- Description: Local government is the most important sphere of government, given the fact that, it is the closest to the people. It always experiences the service delivery protest by the community residents it serves. This is often due to unfulfilled promises concerning the delivery of services. Often the annual performance results are also unsatisfactory as compared to the agreed upon service delivery agreements. National treasury as a distributor of funding to Municipalities often has to request the return of the unused funds at the end of the financial year period. This is the results of poor managing and planning for the resources at the disposal of the Municipalities. There has been a number of transformational processes over the past few years in the manner that municipalities are being managed and run on a day today basis. This research is focused on the system enhancement for Buffalo City Metropolitan Municipality which is situated in the Eastern Cape province of South Africa. Buffalo City Metropolitan Municipality, in particular, has in the 2011 Local government election acquired a metropolitan status, which requires another transformationprocess in the manner it is being managed. At the same time this automatically raises the bar on the service delivery mode and expectations by the communities. The Constitution of the Republic of South Africa, act 108 of 1996 states how Municipalities are to render services to the communities. And therefore pieces of egislation serves as a guide for the processes and systems in the municipalities at large. This research examined the need for an employee performance management system in the Buffalo City Metropolitan Municipality for the 2012 period. In the review of the literature, there was a number of analysis of issues such as organisation culture which plays an important role in the system implementation and success. And it became evident that, there can be no success of any system in an organisation without the thorough evaluation of the organisational culture. The data was sourced through close ended questionnaires which were distributed to 51 respondents that were identified. These were five Directors, five General Managers, 10 Programme Managers from across the institution, 30 staff members from across all directorates and one portfolio councillor from Corporate service directorate.Each respondent was given a period of one week to respond to the questionnaires. The research provides suggested solutions to the current problems in Municipalities in terms of employee performance management within the organisation. The recommendations provided are not conclusive as the circumstances cannot be the same from one municipality to the other. In order to ensure their sustainability within Local Government, there is need for an employee performance management system to evaluate the performance of all the employees. The research findings identified the leadership role in ensuring the introduction and successful implementation of the employee performance management system, in order to address the service delivery challenges faced by the municipalities.
- Full Text:
- Date Issued: 2013
- Authors: Mthembu, Bhekisisa Jacob
- Date: 2013
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11686 , http://hdl.handle.net/10353/d1013579
- Description: Local government is the most important sphere of government, given the fact that, it is the closest to the people. It always experiences the service delivery protest by the community residents it serves. This is often due to unfulfilled promises concerning the delivery of services. Often the annual performance results are also unsatisfactory as compared to the agreed upon service delivery agreements. National treasury as a distributor of funding to Municipalities often has to request the return of the unused funds at the end of the financial year period. This is the results of poor managing and planning for the resources at the disposal of the Municipalities. There has been a number of transformational processes over the past few years in the manner that municipalities are being managed and run on a day today basis. This research is focused on the system enhancement for Buffalo City Metropolitan Municipality which is situated in the Eastern Cape province of South Africa. Buffalo City Metropolitan Municipality, in particular, has in the 2011 Local government election acquired a metropolitan status, which requires another transformationprocess in the manner it is being managed. At the same time this automatically raises the bar on the service delivery mode and expectations by the communities. The Constitution of the Republic of South Africa, act 108 of 1996 states how Municipalities are to render services to the communities. And therefore pieces of egislation serves as a guide for the processes and systems in the municipalities at large. This research examined the need for an employee performance management system in the Buffalo City Metropolitan Municipality for the 2012 period. In the review of the literature, there was a number of analysis of issues such as organisation culture which plays an important role in the system implementation and success. And it became evident that, there can be no success of any system in an organisation without the thorough evaluation of the organisational culture. The data was sourced through close ended questionnaires which were distributed to 51 respondents that were identified. These were five Directors, five General Managers, 10 Programme Managers from across the institution, 30 staff members from across all directorates and one portfolio councillor from Corporate service directorate.Each respondent was given a period of one week to respond to the questionnaires. The research provides suggested solutions to the current problems in Municipalities in terms of employee performance management within the organisation. The recommendations provided are not conclusive as the circumstances cannot be the same from one municipality to the other. In order to ensure their sustainability within Local Government, there is need for an employee performance management system to evaluate the performance of all the employees. The research findings identified the leadership role in ensuring the introduction and successful implementation of the employee performance management system, in order to address the service delivery challenges faced by the municipalities.
- Full Text:
- Date Issued: 2013
Distribution of iron-titanium oxides in the vanadiferous main magnetite seam of the upper zone : Northern limb, Bushveld complex
- Authors: Gwatinetsa, Demand
- Date: 2014
- Subjects: Igneous rocks -- South Africa -- Bushveld Complex , Sulfide minerals -- South Africa -- Bushveld Complex , Vanadium -- South Africa -- Bushveld Complex , Titanium dioxide -- South Africa -- Bushveld Complex , Ferric oxide -- South Africa -- Bushveld Complex , Geology -- South Africa -- Bushveld Complex , Mineralogy -- South Africa -- Bushveld Complex , Mines and mineral resources -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5063 , http://hdl.handle.net/10962/d1013281
- Description: The main magnetite seam of the Upper Zone of the Rustenburg Layered Suite (SACS, 1980) on the Bushveld Complex is known to host the world‘s largest vanadium bearing titaniferous iron ores. The vanadiferous titanomagnetites, contain vanadium in sufficient concentrations (1.2 - 2.2 per cent V₂O₅) to be considered as resources and vanadium has been mined historically by a number of companies among them Anglo-American, Highveld Steel and Vanadium and VanMag Resources as well as currently by Evraz Highveld Steel and Vanadium Limited of South Africa. The titanomagnetites contain iron ore in the form of magnetite and titanium with concentrations averaging 50-75 per cent FeO and 12-21 per cent TiO₂. The titaniferous iron ores have been historically dismissed as a source of iron and titanium, due to the known difficulties of using iron ore with high titania content in blast furnaces. The economic potential for the extractability of the titaniferous magnetites lies in the capacity of the ores to be separated into iron rich and titanium rich concentrates usually through, crushing, grinding and magnetic separation. The separatability of iron oxides and titanium oxides, is dependent on the nature in which the titanium oxide occurs, with granular ilmenite being the most favourable since it can be separated from magnetite via magnetic separation. Titanium that occurs as finely exsolved lamellae or as iron-titanium oxides with low titania content such as ulvospinel render the potential recoverability of titanium poor. The Upper Zone vanadiferous titanomagnetites contain titanium in various forms varying from discrete granular ilmenite to finely exsolved lamellae as well as occurring as part of the minerals ulvospinel (Fe₂TiO₄) and titanomagnetite (a solid solution series between ulvospinel and magnetite) . Discrete ilmenite constitutes between 3-5 per cent by volume of the massive titanomagnetite ores, and between 5-10 per cent by volume of the magnetite-plagioclase cumulates with more than 50 per cent opaque oxide minerals. The purpose of this research was to investigate the mineralogical setting and distribution of the iron and titanium oxides within the magnetitite layers from top to bottom as well as spatially along a strike length of 2 000m to determine the potential for the titanium to be extracted from the titanomagnetite ores. The titanomagnetites of the Upper Zone of the Bushveld Complex with particular reference to the Northern Limb where this research was conducted contains titanium oxides as discrete ilmenite grains but in low concentrations whose potential for separate economic extraction will be challenging. The highest concentration of titanium in the magnetite ores is not contained in the granular ilmenite, but rather in ulvospinel and titanomagnetite as illustrated by the marked higher concentration of TiO₂ in the massive ores which contain less granular ilmenite in comparison to the disseminated ores which contain 3 to 8 percentage points higher granular ilmenite than the massive ores. On the scale of the main magnetite seam, the TiO₂ content increases with increasing stratigraphic height from being completely absent in the footwall anorthosite. The V₂2O₅ content also increases with stratigraphic height except for in one of the 3 boreholes where it drops with increasing height. The decrease or increase patterns are repeated in every seam. The titanomagnetites of the main magnetite seam display a variety of textures from coarse granular magnetite and ilmenite, to trellis ilmenite lamellae, intergranular ilmenite and magnesian spinels and fine exsolution lamellae of ulvospinel and ferro-magnesian spinels parallel to the magnetite cleavage. The bottom contact of the main magnetite seam is very sharp and there is no titanium or vanadium in the footwall barely 10cm below the contact. Chromium is present in the bottom of the 4 layers that constitute the main magnetite seam and it upwards decreases rapidly. In boreholes P21 and P55, there are slight reversals in the TiO₂ and V₂O₅ content towards the top of the magnetite seams.
- Full Text:
- Date Issued: 2014
- Authors: Gwatinetsa, Demand
- Date: 2014
- Subjects: Igneous rocks -- South Africa -- Bushveld Complex , Sulfide minerals -- South Africa -- Bushveld Complex , Vanadium -- South Africa -- Bushveld Complex , Titanium dioxide -- South Africa -- Bushveld Complex , Ferric oxide -- South Africa -- Bushveld Complex , Geology -- South Africa -- Bushveld Complex , Mineralogy -- South Africa -- Bushveld Complex , Mines and mineral resources -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5063 , http://hdl.handle.net/10962/d1013281
- Description: The main magnetite seam of the Upper Zone of the Rustenburg Layered Suite (SACS, 1980) on the Bushveld Complex is known to host the world‘s largest vanadium bearing titaniferous iron ores. The vanadiferous titanomagnetites, contain vanadium in sufficient concentrations (1.2 - 2.2 per cent V₂O₅) to be considered as resources and vanadium has been mined historically by a number of companies among them Anglo-American, Highveld Steel and Vanadium and VanMag Resources as well as currently by Evraz Highveld Steel and Vanadium Limited of South Africa. The titanomagnetites contain iron ore in the form of magnetite and titanium with concentrations averaging 50-75 per cent FeO and 12-21 per cent TiO₂. The titaniferous iron ores have been historically dismissed as a source of iron and titanium, due to the known difficulties of using iron ore with high titania content in blast furnaces. The economic potential for the extractability of the titaniferous magnetites lies in the capacity of the ores to be separated into iron rich and titanium rich concentrates usually through, crushing, grinding and magnetic separation. The separatability of iron oxides and titanium oxides, is dependent on the nature in which the titanium oxide occurs, with granular ilmenite being the most favourable since it can be separated from magnetite via magnetic separation. Titanium that occurs as finely exsolved lamellae or as iron-titanium oxides with low titania content such as ulvospinel render the potential recoverability of titanium poor. The Upper Zone vanadiferous titanomagnetites contain titanium in various forms varying from discrete granular ilmenite to finely exsolved lamellae as well as occurring as part of the minerals ulvospinel (Fe₂TiO₄) and titanomagnetite (a solid solution series between ulvospinel and magnetite) . Discrete ilmenite constitutes between 3-5 per cent by volume of the massive titanomagnetite ores, and between 5-10 per cent by volume of the magnetite-plagioclase cumulates with more than 50 per cent opaque oxide minerals. The purpose of this research was to investigate the mineralogical setting and distribution of the iron and titanium oxides within the magnetitite layers from top to bottom as well as spatially along a strike length of 2 000m to determine the potential for the titanium to be extracted from the titanomagnetite ores. The titanomagnetites of the Upper Zone of the Bushveld Complex with particular reference to the Northern Limb where this research was conducted contains titanium oxides as discrete ilmenite grains but in low concentrations whose potential for separate economic extraction will be challenging. The highest concentration of titanium in the magnetite ores is not contained in the granular ilmenite, but rather in ulvospinel and titanomagnetite as illustrated by the marked higher concentration of TiO₂ in the massive ores which contain less granular ilmenite in comparison to the disseminated ores which contain 3 to 8 percentage points higher granular ilmenite than the massive ores. On the scale of the main magnetite seam, the TiO₂ content increases with increasing stratigraphic height from being completely absent in the footwall anorthosite. The V₂2O₅ content also increases with stratigraphic height except for in one of the 3 boreholes where it drops with increasing height. The decrease or increase patterns are repeated in every seam. The titanomagnetites of the main magnetite seam display a variety of textures from coarse granular magnetite and ilmenite, to trellis ilmenite lamellae, intergranular ilmenite and magnesian spinels and fine exsolution lamellae of ulvospinel and ferro-magnesian spinels parallel to the magnetite cleavage. The bottom contact of the main magnetite seam is very sharp and there is no titanium or vanadium in the footwall barely 10cm below the contact. Chromium is present in the bottom of the 4 layers that constitute the main magnetite seam and it upwards decreases rapidly. In boreholes P21 and P55, there are slight reversals in the TiO₂ and V₂O₅ content towards the top of the magnetite seams.
- Full Text:
- Date Issued: 2014
A SOAP-based Model for secure messaging in a global context
- Authors: Van Eeden, Johannes Jurie
- Date: 2005
- Subjects: Telecommunication systems -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9777 , http://hdl.handle.net/10948/817 , Telecommunication systems -- Security measures
- Description: For integration between application-systems in a global context, interoperability needs to be established on a global level; global interoperability, in turn, is based on a global common application-interface. This is achieved through resolving differences in, inter alia, protocol profiles, among participants in the global network. ebXML is used as the point of departure. A messaging framework, which is based on existing Web technology and standards, is proposed. Certain security and Web service standards are examined to determine specific parameters for an interoperable secure messaging environment. A security based framework comprising a predefined message format and architecture is investigated for a secure interoperable global electronic marketspace.
- Full Text:
- Date Issued: 2005
- Authors: Van Eeden, Johannes Jurie
- Date: 2005
- Subjects: Telecommunication systems -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9777 , http://hdl.handle.net/10948/817 , Telecommunication systems -- Security measures
- Description: For integration between application-systems in a global context, interoperability needs to be established on a global level; global interoperability, in turn, is based on a global common application-interface. This is achieved through resolving differences in, inter alia, protocol profiles, among participants in the global network. ebXML is used as the point of departure. A messaging framework, which is based on existing Web technology and standards, is proposed. Certain security and Web service standards are examined to determine specific parameters for an interoperable secure messaging environment. A security based framework comprising a predefined message format and architecture is investigated for a secure interoperable global electronic marketspace.
- Full Text:
- Date Issued: 2005