The genetic stock structure and distribution of Chrysoblephus Puniceus, a commercially important transboundary linefish species, endemic to the South West Indian Ocean
- Authors: Duncan, Murray Ian
- Date: 2014
- Subjects: Sparidae , Fishes -- Indian Ocean , Fish populations , Fishery management , Fish stock assessment -- South Africa , Fish stock assessment -- Mozambique , Overfishing , Habitat conservation , Fishes -- Genetics , Fishes -- Climatic factors , Fishes -- Variation , Fishes -- Migration
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5360 , http://hdl.handle.net/10962/d1011868 , Sparidae , Fishes -- Indian Ocean , Fish populations , Fishery management , Fish stock assessment -- South Africa , Fish stock assessment -- Mozambique , Overfishing , Habitat conservation , Fishes -- Genetics , Fishes -- Climatic factors , Fishes -- Variation , Fishes -- Migration
- Description: Chrysoblephus puniceus is an over-exploited linefish species, endemic to the coastlines off southern Mozambique and eastern South Africa. Over-exploitation and habitat loss are two of the biggest threats to the sustainability of fisheries globally. Assessing the genetic stock structure (a prerequisite for effective management) and predicting climate related range changes will provide a better understanding of these threats to C. puniceus which can be used to improve the sustainability of the fishery. Two hundred and eighty four genetic samples were collected from eight sampling sites between Ponta da Barra in Mozambique and Coffee Bay in South Africa. The mitochondrial control region and ten microsatellite loci were amplified to analyse the stock structure of C. puniceus. The majority of microsatellite and mtDNA pairwise population comparisons were not significant (P > 0.05) although Xai Xai and Inhaca populations had some significant population comparisons for mtDNA (P < 0.05). AMOVA did not explain any significant variation at the between groups hierarchical level for any pre-defined groupings except for a mtDNA grouping which separated out Xai Xai and Inhaca from other sampling sites. SAMOVA, isolation by distance tests, structure analysis, principle component analysis and spatial autocorrelation analysis all indicated a single population of C. puniceus as being most likely. The migrate-n analysis provided evidence of current driven larval transport, with net migration rates influenced by current dynamics.Two hundred and thirty six unique presence points of C. puniceus were correlated with seasonal maximum and minimum temperature data and bathymetry to model the current distribution and predict future distribution changes of the species up until 2030. Eight individual species distribution models were developed and combined into a mean ensemble model using the Biomod2 package. Winter minimum temperature was the most important variable in determining models outputs. Overall the ensemble model was accurate with a true skills statistic score of 0.962. Binary transformed mean ensemble models predicted a northern and southern range contraction of C. puniceus' distribution of 15 percent; by 2030. The mean ensemble probability of occurrence models indicated that C. puniceus' abundance is likely to decrease off the southern Mozambique coastline but remain high off KwaZulu-Natal. The results of the genetic analysis support the theory of external recruitment sustaining the KwaZulu Natal fishery for C. puniceus. While the high genetic diversity and connectivity may make C. puniceus more resilient to disturbances, the loss of 15 percent; distribution and 11 percent; genetic diversity by 2030 will increase the species vulnerability. The decrease in abundance of C. puniceus off southern Mozambique together with current widespread exploitation levels could result in the collapse of the fishery. A single transboundary stock of C. puniceus highlights the need for co-management of the species. A combined stock assessment between South Africa and Mozambique and the development of further Marine Protected Areas off southern Mozambique are suggested as management options to minimise the vulnerability of this species.
- Full Text:
- Date Issued: 2014
- Authors: Duncan, Murray Ian
- Date: 2014
- Subjects: Sparidae , Fishes -- Indian Ocean , Fish populations , Fishery management , Fish stock assessment -- South Africa , Fish stock assessment -- Mozambique , Overfishing , Habitat conservation , Fishes -- Genetics , Fishes -- Climatic factors , Fishes -- Variation , Fishes -- Migration
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5360 , http://hdl.handle.net/10962/d1011868 , Sparidae , Fishes -- Indian Ocean , Fish populations , Fishery management , Fish stock assessment -- South Africa , Fish stock assessment -- Mozambique , Overfishing , Habitat conservation , Fishes -- Genetics , Fishes -- Climatic factors , Fishes -- Variation , Fishes -- Migration
- Description: Chrysoblephus puniceus is an over-exploited linefish species, endemic to the coastlines off southern Mozambique and eastern South Africa. Over-exploitation and habitat loss are two of the biggest threats to the sustainability of fisheries globally. Assessing the genetic stock structure (a prerequisite for effective management) and predicting climate related range changes will provide a better understanding of these threats to C. puniceus which can be used to improve the sustainability of the fishery. Two hundred and eighty four genetic samples were collected from eight sampling sites between Ponta da Barra in Mozambique and Coffee Bay in South Africa. The mitochondrial control region and ten microsatellite loci were amplified to analyse the stock structure of C. puniceus. The majority of microsatellite and mtDNA pairwise population comparisons were not significant (P > 0.05) although Xai Xai and Inhaca populations had some significant population comparisons for mtDNA (P < 0.05). AMOVA did not explain any significant variation at the between groups hierarchical level for any pre-defined groupings except for a mtDNA grouping which separated out Xai Xai and Inhaca from other sampling sites. SAMOVA, isolation by distance tests, structure analysis, principle component analysis and spatial autocorrelation analysis all indicated a single population of C. puniceus as being most likely. The migrate-n analysis provided evidence of current driven larval transport, with net migration rates influenced by current dynamics.Two hundred and thirty six unique presence points of C. puniceus were correlated with seasonal maximum and minimum temperature data and bathymetry to model the current distribution and predict future distribution changes of the species up until 2030. Eight individual species distribution models were developed and combined into a mean ensemble model using the Biomod2 package. Winter minimum temperature was the most important variable in determining models outputs. Overall the ensemble model was accurate with a true skills statistic score of 0.962. Binary transformed mean ensemble models predicted a northern and southern range contraction of C. puniceus' distribution of 15 percent; by 2030. The mean ensemble probability of occurrence models indicated that C. puniceus' abundance is likely to decrease off the southern Mozambique coastline but remain high off KwaZulu-Natal. The results of the genetic analysis support the theory of external recruitment sustaining the KwaZulu Natal fishery for C. puniceus. While the high genetic diversity and connectivity may make C. puniceus more resilient to disturbances, the loss of 15 percent; distribution and 11 percent; genetic diversity by 2030 will increase the species vulnerability. The decrease in abundance of C. puniceus off southern Mozambique together with current widespread exploitation levels could result in the collapse of the fishery. A single transboundary stock of C. puniceus highlights the need for co-management of the species. A combined stock assessment between South Africa and Mozambique and the development of further Marine Protected Areas off southern Mozambique are suggested as management options to minimise the vulnerability of this species.
- Full Text:
- Date Issued: 2014
The rising popularity of Pidgin English radio stations in Nigeria: an audience study of Wazobia FM, Lagos
- Durodola, Olufunke Treasure Anike
- Authors: Durodola, Olufunke Treasure Anike
- Date: 2014
- Subjects: Wazobia FM (Nigeria) , Radio audiences -- Nigeria -- Lagos , Pidgin English -- Nigeria -- Lagos , Radio stations -- Nigeria -- Lagos , Mass media and culture -- Nigeria -- Lagos , Language and languages -- Variation , Popular culture -- Nigeria , Postcolonialism -- Nigeria
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3550 , http://hdl.handle.net/10962/d1020886
- Description: This research is located within media studies and draws on the Cultural Studies approach. It is an audience study, which uses the mixed methods of focus group discussions and an online survey to examine the importance of the use of Nigerian Pidgin as a broadcast language in investigating the rising popularity of Pidgin English radio in a multi-ethnic and multi-lingual Nigeria. The study focuses on Wazobia FM, a radio station in Lagos, and the first pidgin station in Nigeria. It seeks to determine whether the station’s audience engaged with the station’s programming based on its prioritisation of NigP and the linguistic identity it offers them. The study foregrounds the marginalised status of NigP within the politics of language in Nigeria. It traces the language’s evolution through popular and oppositional expressions in broadcasting and in music. It also seeks to establish the place of Pidgin English within the role that language plays in the formation of the Nigerian identity. This study thus adopts the ‘emic’ perspective, which underpins qualitative methodology, and views social life in terms of processes as opposed to static terms. The theoretical framework of this research revolves around culture, language and identity. Pertinent concepts in post-colonial studies, together with conceptual frameworks in Cultural Studies, such as popular culture, representation, hegemony and counter-culture have been used to make sense of the popularity of NigP radio stations.
- Full Text:
- Date Issued: 2014
- Authors: Durodola, Olufunke Treasure Anike
- Date: 2014
- Subjects: Wazobia FM (Nigeria) , Radio audiences -- Nigeria -- Lagos , Pidgin English -- Nigeria -- Lagos , Radio stations -- Nigeria -- Lagos , Mass media and culture -- Nigeria -- Lagos , Language and languages -- Variation , Popular culture -- Nigeria , Postcolonialism -- Nigeria
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3550 , http://hdl.handle.net/10962/d1020886
- Description: This research is located within media studies and draws on the Cultural Studies approach. It is an audience study, which uses the mixed methods of focus group discussions and an online survey to examine the importance of the use of Nigerian Pidgin as a broadcast language in investigating the rising popularity of Pidgin English radio in a multi-ethnic and multi-lingual Nigeria. The study focuses on Wazobia FM, a radio station in Lagos, and the first pidgin station in Nigeria. It seeks to determine whether the station’s audience engaged with the station’s programming based on its prioritisation of NigP and the linguistic identity it offers them. The study foregrounds the marginalised status of NigP within the politics of language in Nigeria. It traces the language’s evolution through popular and oppositional expressions in broadcasting and in music. It also seeks to establish the place of Pidgin English within the role that language plays in the formation of the Nigerian identity. This study thus adopts the ‘emic’ perspective, which underpins qualitative methodology, and views social life in terms of processes as opposed to static terms. The theoretical framework of this research revolves around culture, language and identity. Pertinent concepts in post-colonial studies, together with conceptual frameworks in Cultural Studies, such as popular culture, representation, hegemony and counter-culture have been used to make sense of the popularity of NigP radio stations.
- Full Text:
- Date Issued: 2014
A bone fragment
- Authors: Dyantyi, Mbongisi Orlean
- Date: 2014
- Subjects: South African fiction (English) -- 21st century , Creative writing (Higher education) , English language -- Writing , South African fiction (English) -- Study and teaching (Higher)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5985 , http://hdl.handle.net/10962/d1015677
- Description: This novella presents three characters, each occupying a different sphere of reality. One is a ‘living dead’ who is forced to return to the land of the living for his continued existence. The other is a young woman who, having lost the will to live, must find a purpose if she is to continue living. The third is a young man who dwells more in the inner than the external world. Their lives intersect through the scripture known as ‘a fragment of a bone.’
- Full Text:
- Date Issued: 2014
- Authors: Dyantyi, Mbongisi Orlean
- Date: 2014
- Subjects: South African fiction (English) -- 21st century , Creative writing (Higher education) , English language -- Writing , South African fiction (English) -- Study and teaching (Higher)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5985 , http://hdl.handle.net/10962/d1015677
- Description: This novella presents three characters, each occupying a different sphere of reality. One is a ‘living dead’ who is forced to return to the land of the living for his continued existence. The other is a young woman who, having lost the will to live, must find a purpose if she is to continue living. The third is a young man who dwells more in the inner than the external world. Their lives intersect through the scripture known as ‘a fragment of a bone.’
- Full Text:
- Date Issued: 2014
An exploratory study of the implementation of a decentralized water provision model: a case of Chris Hani District Municipality
- Dyasi, Nobuhle Marjorie Pretty
- Authors: Dyasi, Nobuhle Marjorie Pretty
- Date: 2014
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/18532 , vital:22353
- Description: It is notable that successful implementation of strategy is very important in any organization - private or public. As such it is not surprising that public sector managers are expected to implement strategies to improve organizational performance and service delivery. Consequently, strategy implementation in the public sector has become an increasingly relevant and topical issue, especially because public sector organizations exist to meet the needs of particular stakeholder groups and maximize organizational performance rather than realize profits. Despite this growing focus of public sector management literature on strategy, “there have so far been few explanations about how public sector managers develop and implement new strategic approaches” (Pablo, Reay, Dewald and Casebeer, 2007:687). This qualitative study explores the implementation of a decentralised water service provision model at Chris Hani District Municipality (CHDM) which is located in the Eastern Cape Province in South Africa. The Chris Hani District Municipality is comprised of eight local municipalities: Lukhanji, Lady Frere, Sakhisizwe, Inkwanca, Tsolwana, Inxuba Yethemba, Intsika Yethu and Engcobo. All eight municipalities were delegated to perform the water service provision function of CHDM. The research questions are: How effective was the implementation of the CHDM decentralised water services provision model? and What are the enablers of and barriers to implementing a decentralised water provision model in CHDM? The study used the McKinsey 7S framework of strategy execution to evaluate the implementation of the decentralised water services provision model in CHDM, enablers and barriers to executing this model were also identified. Purposively, a total of seven area managers were interviewed as the eighth Area Manager resigned and left the employment of CHDM during the time of the study. Data was gathered from Area Managers who are intimately involved in the daily operation of water services provision. Data was gathered through semi-structured interviews which were audio recorded, transcribed and data was coded and categorised according to the theoretical perspectives of the McKinsey 7S framework. The draft report was given to the research participants for verification or comments not only as input but also as a member check before the final report. Predominantly most of the Area Managers reflected that the implementation of the decentralised water services provision model by CHDM manifested four cornerstones: (a) reducing distance to water services, (b) delegating of water provision function and accountability, (c) improving delivery of water services, and (d) putting people first in water provision. Drivers and barriers of the implementation of the decentralized water provision strategy were identified to empower local municipalities and enhance operational efficiencies and service quality. Recommendations were made to CHDM on how the implementation of the decentralised water services provision model could be enhanced for better performance. This study will benefit CHDM on improving and strengthening the alignment of all the 7S’s elements of strategy execution to enhance the performance of the decentralised water provision model. Since no studies had been conducted previously to evaluate the implementation of a decentralised water services provision strategy at CHDM, this research is valuable to CHDM as it provides insight on the effectiveness of implementing the decentralised water provision model. Furthermore, the use of the McKinsey 7S framework to evaluate the decentralised model is valuable as it identifies and highlights the gaps where there is misalignment of the 7S’s of strategy execution. These are areas which CHDM needs to address in order to enhance or improve strategic performance.
- Full Text:
- Date Issued: 2014
- Authors: Dyasi, Nobuhle Marjorie Pretty
- Date: 2014
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/18532 , vital:22353
- Description: It is notable that successful implementation of strategy is very important in any organization - private or public. As such it is not surprising that public sector managers are expected to implement strategies to improve organizational performance and service delivery. Consequently, strategy implementation in the public sector has become an increasingly relevant and topical issue, especially because public sector organizations exist to meet the needs of particular stakeholder groups and maximize organizational performance rather than realize profits. Despite this growing focus of public sector management literature on strategy, “there have so far been few explanations about how public sector managers develop and implement new strategic approaches” (Pablo, Reay, Dewald and Casebeer, 2007:687). This qualitative study explores the implementation of a decentralised water service provision model at Chris Hani District Municipality (CHDM) which is located in the Eastern Cape Province in South Africa. The Chris Hani District Municipality is comprised of eight local municipalities: Lukhanji, Lady Frere, Sakhisizwe, Inkwanca, Tsolwana, Inxuba Yethemba, Intsika Yethu and Engcobo. All eight municipalities were delegated to perform the water service provision function of CHDM. The research questions are: How effective was the implementation of the CHDM decentralised water services provision model? and What are the enablers of and barriers to implementing a decentralised water provision model in CHDM? The study used the McKinsey 7S framework of strategy execution to evaluate the implementation of the decentralised water services provision model in CHDM, enablers and barriers to executing this model were also identified. Purposively, a total of seven area managers were interviewed as the eighth Area Manager resigned and left the employment of CHDM during the time of the study. Data was gathered from Area Managers who are intimately involved in the daily operation of water services provision. Data was gathered through semi-structured interviews which were audio recorded, transcribed and data was coded and categorised according to the theoretical perspectives of the McKinsey 7S framework. The draft report was given to the research participants for verification or comments not only as input but also as a member check before the final report. Predominantly most of the Area Managers reflected that the implementation of the decentralised water services provision model by CHDM manifested four cornerstones: (a) reducing distance to water services, (b) delegating of water provision function and accountability, (c) improving delivery of water services, and (d) putting people first in water provision. Drivers and barriers of the implementation of the decentralized water provision strategy were identified to empower local municipalities and enhance operational efficiencies and service quality. Recommendations were made to CHDM on how the implementation of the decentralised water services provision model could be enhanced for better performance. This study will benefit CHDM on improving and strengthening the alignment of all the 7S’s elements of strategy execution to enhance the performance of the decentralised water provision model. Since no studies had been conducted previously to evaluate the implementation of a decentralised water services provision strategy at CHDM, this research is valuable to CHDM as it provides insight on the effectiveness of implementing the decentralised water provision model. Furthermore, the use of the McKinsey 7S framework to evaluate the decentralised model is valuable as it identifies and highlights the gaps where there is misalignment of the 7S’s of strategy execution. These are areas which CHDM needs to address in order to enhance or improve strategic performance.
- Full Text:
- Date Issued: 2014
The agriculture mentorship programme of the department of Agrarian reform and rural development
- Authors: Dyasopu, Thembani
- Date: 2014
- Subjects: Land reform -- South Africa , Agriculture -- Economic aspects -- South Africa , Agriculture and state -- South Africa , South Africa -- Rural conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9252 , http://hdl.handle.net/10948/d1021191
- Description: New policy initiatives that followed the 1994 democratic elections aim strongly on construction and development, especially in the agrarian sector. Land reform is one of the initiatives that the democratic government has implemented post 1994 to enable the previously marginalised and disposed individuals and families to own land. The aim of the land reform was not only to provide settlement beneficiaries, but to provide post settlement support to them and enable them to live a better life. However, most of the beneficiaries who acquired farms through the land reform programs lack practical experience in commercial agricultural production. In light of the above, the agricultural mentorship programme was implemented to offer a ray of sunshine to smallholder and emerging farmers. However, it is quite evident that although the agricultural mentorship program was implemented, the Kat river valley emerging citrus farmers are still facing challenges such as limited production capacity; limited access to financial capital; limited access to production equipment; and limited post-harvest support. This study aims to review the agriculture mentorship programme of the Department of Agrarian Reform and Rural Development (DRDAR), with a specific focus on citrus at Kat River Valley. Using data drawn from a sample of nine (9) mentees, two (2) mentors and one official from DARDAR who were personally visited and interviewed, the thesis presents the results of an assessment of the program’s outcomes for participant’s experiences and perceptions in order to strengthen the programme. A review of related literature on land and agriculture reform, agricultural policies, emerging farmers and mentorship has been presented. The study employed a qualitative approach for in-depth understanding and verification. Source documents, open-ended questionnaires and semi-structured interviews were used to collect data from participants. The study revealed that the mentorship programme has made an impact since its implementation as can be noted by the increase in production and income levels; sustainability of skills and knowledge attained from during mentorship and also job opportunities from the projects.
- Full Text:
- Date Issued: 2014
- Authors: Dyasopu, Thembani
- Date: 2014
- Subjects: Land reform -- South Africa , Agriculture -- Economic aspects -- South Africa , Agriculture and state -- South Africa , South Africa -- Rural conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9252 , http://hdl.handle.net/10948/d1021191
- Description: New policy initiatives that followed the 1994 democratic elections aim strongly on construction and development, especially in the agrarian sector. Land reform is one of the initiatives that the democratic government has implemented post 1994 to enable the previously marginalised and disposed individuals and families to own land. The aim of the land reform was not only to provide settlement beneficiaries, but to provide post settlement support to them and enable them to live a better life. However, most of the beneficiaries who acquired farms through the land reform programs lack practical experience in commercial agricultural production. In light of the above, the agricultural mentorship programme was implemented to offer a ray of sunshine to smallholder and emerging farmers. However, it is quite evident that although the agricultural mentorship program was implemented, the Kat river valley emerging citrus farmers are still facing challenges such as limited production capacity; limited access to financial capital; limited access to production equipment; and limited post-harvest support. This study aims to review the agriculture mentorship programme of the Department of Agrarian Reform and Rural Development (DRDAR), with a specific focus on citrus at Kat River Valley. Using data drawn from a sample of nine (9) mentees, two (2) mentors and one official from DARDAR who were personally visited and interviewed, the thesis presents the results of an assessment of the program’s outcomes for participant’s experiences and perceptions in order to strengthen the programme. A review of related literature on land and agriculture reform, agricultural policies, emerging farmers and mentorship has been presented. The study employed a qualitative approach for in-depth understanding and verification. Source documents, open-ended questionnaires and semi-structured interviews were used to collect data from participants. The study revealed that the mentorship programme has made an impact since its implementation as can be noted by the increase in production and income levels; sustainability of skills and knowledge attained from during mentorship and also job opportunities from the projects.
- Full Text:
- Date Issued: 2014
A framework for high speed lexical classification of malicious URLs
- Authors: Egan, Shaun Peter
- Date: 2014
- Subjects: Internet -- Security measures -- Research , Uniform Resource Identifiers -- Security measures -- Research , Neural networks (Computer science) -- Research , Computer security -- Research , Computer crimes -- Prevention , Phishing
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4696 , http://hdl.handle.net/10962/d1011933 , Internet -- Security measures -- Research , Uniform Resource Identifiers -- Security measures -- Research , Neural networks (Computer science) -- Research , Computer security -- Research , Computer crimes -- Prevention , Phishing
- Description: Phishing attacks employ social engineering to target end-users, with the goal of stealing identifying or sensitive information. This information is used in activities such as identity theft or financial fraud. During a phishing campaign, attackers distribute URLs which; along with false information, point to fraudulent resources in an attempt to deceive users into requesting the resource. These URLs are made obscure through the use of several techniques which make automated detection difficult. Current methods used to detect malicious URLs face multiple problems which attackers use to their advantage. These problems include: the time required to react to new attacks; shifts in trends in URL obfuscation and usability problems caused by the latency incurred by the lookups required by these approaches. A new method of identifying malicious URLs using Artificial Neural Networks (ANNs) has been shown to be effective by several authors. The simple method of classification performed by ANNs result in very high classification speeds with little impact on usability. Samples used for the training, validation and testing of these ANNs are gathered from Phishtank and Open Directory. Words selected from the different sections of the samples are used to create a `Bag-of-Words (BOW)' which is used as a binary input vector indicating the presence of a word for a given sample. Twenty additional features which measure lexical attributes of the sample are used to increase classification accuracy. A framework that is capable of generating these classifiers in an automated fashion is implemented. These classifiers are automatically stored on a remote update distribution service which has been built to supply updates to classifier implementations. An example browser plugin is created and uses ANNs provided by this service. It is both capable of classifying URLs requested by a user in real time and is able to block these requests. The framework is tested in terms of training time and classification accuracy. Classification speed and the effectiveness of compression algorithms on the data required to distribute updates is tested. It is concluded that it is possible to generate these ANNs in a frequent fashion, and in a method that is small enough to distribute easily. It is also shown that classifications are made at high-speed with high-accuracy, resulting in little impact on usability.
- Full Text:
- Date Issued: 2014
- Authors: Egan, Shaun Peter
- Date: 2014
- Subjects: Internet -- Security measures -- Research , Uniform Resource Identifiers -- Security measures -- Research , Neural networks (Computer science) -- Research , Computer security -- Research , Computer crimes -- Prevention , Phishing
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4696 , http://hdl.handle.net/10962/d1011933 , Internet -- Security measures -- Research , Uniform Resource Identifiers -- Security measures -- Research , Neural networks (Computer science) -- Research , Computer security -- Research , Computer crimes -- Prevention , Phishing
- Description: Phishing attacks employ social engineering to target end-users, with the goal of stealing identifying or sensitive information. This information is used in activities such as identity theft or financial fraud. During a phishing campaign, attackers distribute URLs which; along with false information, point to fraudulent resources in an attempt to deceive users into requesting the resource. These URLs are made obscure through the use of several techniques which make automated detection difficult. Current methods used to detect malicious URLs face multiple problems which attackers use to their advantage. These problems include: the time required to react to new attacks; shifts in trends in URL obfuscation and usability problems caused by the latency incurred by the lookups required by these approaches. A new method of identifying malicious URLs using Artificial Neural Networks (ANNs) has been shown to be effective by several authors. The simple method of classification performed by ANNs result in very high classification speeds with little impact on usability. Samples used for the training, validation and testing of these ANNs are gathered from Phishtank and Open Directory. Words selected from the different sections of the samples are used to create a `Bag-of-Words (BOW)' which is used as a binary input vector indicating the presence of a word for a given sample. Twenty additional features which measure lexical attributes of the sample are used to increase classification accuracy. A framework that is capable of generating these classifiers in an automated fashion is implemented. These classifiers are automatically stored on a remote update distribution service which has been built to supply updates to classifier implementations. An example browser plugin is created and uses ANNs provided by this service. It is both capable of classifying URLs requested by a user in real time and is able to block these requests. The framework is tested in terms of training time and classification accuracy. Classification speed and the effectiveness of compression algorithms on the data required to distribute updates is tested. It is concluded that it is possible to generate these ANNs in a frequent fashion, and in a method that is small enough to distribute easily. It is also shown that classifications are made at high-speed with high-accuracy, resulting in little impact on usability.
- Full Text:
- Date Issued: 2014
A critical discourse analysis (CDA) of the contesting discourses articulated by the ANC and the news media in the City Press coverage of The Spear
- Authors: Egglestone, Tia Ashleigh
- Date: 2014
- Subjects: Murray, Brett , African National Congress , Mass media -- Political aspects -- South Africa , Press and politics -- South Africa , Freedom of the press -- South Africa , Mass media policy -- South Africa , Newspapers -- Objectivity , Critical discourse analysis , South Africa -- Politics and government -- 1994-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3526 , http://hdl.handle.net/10962/d1012975
- Description: This research focuses on the controversy surrounding the exhibition and media publication of Brett Murray’s painting, The Spear of the Nation (May 2012). It takes the form of a qualitative Critical Discourse Analysis (CDA), underpinned by Fairclough’s (1995) three-dimensional approach, to investigate how the contesting discourses articulated by the ruling political party (the ANC) and the news media have been negotiated in the City Press coverage in response to the painting. While the contestation was fought ostensibly on constitutional grounds, it arguably serves as an illustrative moment of the deeply ideological debate occurring in South Africa between the government and the national media industry regarding media diversity, transformation and democracy. It points to the lines of fracture in the broader political and social space. Informed by Foucault’s conceptualisation of discourse and the role of power in the production of knowledge and ‘truth’, this study aims to expose the discourses articulated and contested in order to make inferences about the various ‘truths’ the ANC and the media make of the democratic role of the press in a contemporary South Africa. The sample consists of five reports intended to represent the media’s responses and four articles that prominently articulate the ANC’s responses. The analysis, which draws on strategies from within critical linguists and media studies, is confined to these nine purposively sampled from the City Press online newspaper texts published between 13 May 2012 and 13 June 2012. Findings suggest the ANC legitimise expectations for the media to engage in a collaborative role in order to serve the ‘national interest’. Conversely, the media advocate for a monitorial press to justify serving the ‘public interest’. This research is envisioned to be valuable for both sets of stakeholders in developing richer understandings relevant to issues of any regulation to be debated. It forms part of a larger project on Media Policy and Democracy which seeks to contribute to media diversity and transformation, and to develop the quality of democracy in South Africa.
- Full Text:
- Date Issued: 2014
- Authors: Egglestone, Tia Ashleigh
- Date: 2014
- Subjects: Murray, Brett , African National Congress , Mass media -- Political aspects -- South Africa , Press and politics -- South Africa , Freedom of the press -- South Africa , Mass media policy -- South Africa , Newspapers -- Objectivity , Critical discourse analysis , South Africa -- Politics and government -- 1994-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3526 , http://hdl.handle.net/10962/d1012975
- Description: This research focuses on the controversy surrounding the exhibition and media publication of Brett Murray’s painting, The Spear of the Nation (May 2012). It takes the form of a qualitative Critical Discourse Analysis (CDA), underpinned by Fairclough’s (1995) three-dimensional approach, to investigate how the contesting discourses articulated by the ruling political party (the ANC) and the news media have been negotiated in the City Press coverage in response to the painting. While the contestation was fought ostensibly on constitutional grounds, it arguably serves as an illustrative moment of the deeply ideological debate occurring in South Africa between the government and the national media industry regarding media diversity, transformation and democracy. It points to the lines of fracture in the broader political and social space. Informed by Foucault’s conceptualisation of discourse and the role of power in the production of knowledge and ‘truth’, this study aims to expose the discourses articulated and contested in order to make inferences about the various ‘truths’ the ANC and the media make of the democratic role of the press in a contemporary South Africa. The sample consists of five reports intended to represent the media’s responses and four articles that prominently articulate the ANC’s responses. The analysis, which draws on strategies from within critical linguists and media studies, is confined to these nine purposively sampled from the City Press online newspaper texts published between 13 May 2012 and 13 June 2012. Findings suggest the ANC legitimise expectations for the media to engage in a collaborative role in order to serve the ‘national interest’. Conversely, the media advocate for a monitorial press to justify serving the ‘public interest’. This research is envisioned to be valuable for both sets of stakeholders in developing richer understandings relevant to issues of any regulation to be debated. It forms part of a larger project on Media Policy and Democracy which seeks to contribute to media diversity and transformation, and to develop the quality of democracy in South Africa.
- Full Text:
- Date Issued: 2014
Ecological consequences of non-native fish invasion in Eastern Cape headwater streams
- Authors: Ellender, Bruce Robert
- Date: 2014
- Subjects: Fishery management -- South Africa -- Eastern Cape Fishes -- Conservation -- South Africa Introduced fishes -- South Africa -- Eastern Cape Introduced organisms
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/69065 , vital:29380
- Description: The introduction, spread and concomitant impacts of non-native species are a global problem. Fish are among the most widely introduced vertebrate groups, with their impacts affecting multiple levels of organisation- from individuals, populations and communities, to entire ecosystems. In South Africa, the largest perceived threat to range-restricted endemic headwater stream fishes is said to be invasion by non-native fishes, however, as is the case elsewhere, invasive impacts are often a case of risk perception rather than actual risk analysis. Two range-restricted headwater species, the Eastern Cape redfin Pseudobarbus afer and the Border barb Barbus trevelyani are redlisted by the International Union for the Conservation of Nature (IUCN) as ‘Endangered’, primarily due to invasion by non-native fishes. To investigate invasions in South Africa, and provide a quantitative estimate of the impact of non-native fishes on the two imperilled endemics, P. afer and B. trevelyani, the overall aims of this thesis were to: (A) Provide a literature review on non-native fish invasions in South Africa; (B) Using two case studies on the headwaters of the perennial Keiskamma and episodic Swartkops River systems, investigate the naturalisation-invasion continuum to provide a holistic view of the invasion process in these variable environments. The specific thesis objectives were: (1) Reviewing current knowledge of invasive impacts of non-native fishes in South Africa; (2) Investigating invasibility of headwater stream environments by non-native fishes; (3) Determining the establishment success of non-native fishes, (4) Assessing the spatial and temporal impacts of invasion; (5) Understanding mechanisms responsible for non-native fish impacts; (6) Investigating the threat of non-native fish invasion on the genetic diversity of two the two headwater fishes, P. afer and B. trevelyani. Results from the literature review of fish invasions (Chapter 1) showed that South Africa has a long history of non-native fish introductions, spanning two and a half centuries. Currently, 55 species have been introduced or translocated. Many of these introduced species have become fully invasive (36%). Their impacts also span multiple levels of biological organisation. There was a general paucity of studies on fish invasions (38 studies), however, of those conducted, reviewed studies placed emphases on invasive impacts (25 studies) and the transport, introduction, establishment and spread stages of the invasion process were largely ignored. The two study systems, the Swartkops and Keiskamma Rivers, were heavily invaded and numbers of introduced species surpassed that of natives (Chapter 2, 3 and 5). Headwater streams had varying invasibility and a number of non-native species were successfully established (Chapter 2, 3, 5 and 6). The remainder of the invasions were casual incursions into headwater streams from source populations in mainstream and impoundment environments which were invasion hotspots. Irrespective of establishment, four predatory invaders (largemouth bass Micropterus salmoides, smallmouth bass M. dolomieu, brown trout Salmo trutta and rainbow trout Oncorhynchus mykiss) impacted heavily on native fish communities (Chapter 3, 4 and 5). Two broad types of invasion were documented, top down invasion by non-native O. mykiss and S. trutta and upstream invasion by M. salmoides and M. dolomieu (Chapter 3 and 5). Their impacts included changes in community structure, extirpation from invaded stream reaches resulting in contracted distribution, and isolation and fragmentation of native fish populations. The impacts of non-native predatory fishes were particularly acute for P. afer and B. trevelyani. Where non-native predatory fish occurred, P. afer and B. trevelyani had been extirpated (Chapter 3 and 5). As a result both native species exhibited contracted distributions (>20% habitat loss due to invasion). Upstream invasion by centrarchids isolated and fragmented P. afer populations into headwater refugia, while top down invasion by salmonids excluded B. trevelyani from invaded, more pristine stream reaches, by forcing the species into degraded unsuitable lower stream reaches. Predation also disrupted population processes such as adult dispersal for P. afer, and centrarchid-invaded zones acted as demographic sinks, where adults dispersing through invaded reaches were rapidly depleted. While the Mandela lineage of P. afer exhibited little within or between drainage genetic structuring, B. trevelyani was >4% divergent between drainages, and up to 2% divergent between streams within the Keiskamma River system (Chapter 7). The distribution of genetic diversity for B. trevelyani also indicated that the loss of diversity was imminent without immediate conservation interventions. This thesis has provided conclusive evidence that native fishes are vulnerable to invasion and that non-native predatory fishes have significant impacts on native fishes in Eastern Cape headwater streams. If management and conservation measures are implemented, the unwanted introduction and spread of non-native fishes may be restricted, allowing native fishes opportunities for recovery.
- Full Text:
- Date Issued: 2014
- Authors: Ellender, Bruce Robert
- Date: 2014
- Subjects: Fishery management -- South Africa -- Eastern Cape Fishes -- Conservation -- South Africa Introduced fishes -- South Africa -- Eastern Cape Introduced organisms
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/69065 , vital:29380
- Description: The introduction, spread and concomitant impacts of non-native species are a global problem. Fish are among the most widely introduced vertebrate groups, with their impacts affecting multiple levels of organisation- from individuals, populations and communities, to entire ecosystems. In South Africa, the largest perceived threat to range-restricted endemic headwater stream fishes is said to be invasion by non-native fishes, however, as is the case elsewhere, invasive impacts are often a case of risk perception rather than actual risk analysis. Two range-restricted headwater species, the Eastern Cape redfin Pseudobarbus afer and the Border barb Barbus trevelyani are redlisted by the International Union for the Conservation of Nature (IUCN) as ‘Endangered’, primarily due to invasion by non-native fishes. To investigate invasions in South Africa, and provide a quantitative estimate of the impact of non-native fishes on the two imperilled endemics, P. afer and B. trevelyani, the overall aims of this thesis were to: (A) Provide a literature review on non-native fish invasions in South Africa; (B) Using two case studies on the headwaters of the perennial Keiskamma and episodic Swartkops River systems, investigate the naturalisation-invasion continuum to provide a holistic view of the invasion process in these variable environments. The specific thesis objectives were: (1) Reviewing current knowledge of invasive impacts of non-native fishes in South Africa; (2) Investigating invasibility of headwater stream environments by non-native fishes; (3) Determining the establishment success of non-native fishes, (4) Assessing the spatial and temporal impacts of invasion; (5) Understanding mechanisms responsible for non-native fish impacts; (6) Investigating the threat of non-native fish invasion on the genetic diversity of two the two headwater fishes, P. afer and B. trevelyani. Results from the literature review of fish invasions (Chapter 1) showed that South Africa has a long history of non-native fish introductions, spanning two and a half centuries. Currently, 55 species have been introduced or translocated. Many of these introduced species have become fully invasive (36%). Their impacts also span multiple levels of biological organisation. There was a general paucity of studies on fish invasions (38 studies), however, of those conducted, reviewed studies placed emphases on invasive impacts (25 studies) and the transport, introduction, establishment and spread stages of the invasion process were largely ignored. The two study systems, the Swartkops and Keiskamma Rivers, were heavily invaded and numbers of introduced species surpassed that of natives (Chapter 2, 3 and 5). Headwater streams had varying invasibility and a number of non-native species were successfully established (Chapter 2, 3, 5 and 6). The remainder of the invasions were casual incursions into headwater streams from source populations in mainstream and impoundment environments which were invasion hotspots. Irrespective of establishment, four predatory invaders (largemouth bass Micropterus salmoides, smallmouth bass M. dolomieu, brown trout Salmo trutta and rainbow trout Oncorhynchus mykiss) impacted heavily on native fish communities (Chapter 3, 4 and 5). Two broad types of invasion were documented, top down invasion by non-native O. mykiss and S. trutta and upstream invasion by M. salmoides and M. dolomieu (Chapter 3 and 5). Their impacts included changes in community structure, extirpation from invaded stream reaches resulting in contracted distribution, and isolation and fragmentation of native fish populations. The impacts of non-native predatory fishes were particularly acute for P. afer and B. trevelyani. Where non-native predatory fish occurred, P. afer and B. trevelyani had been extirpated (Chapter 3 and 5). As a result both native species exhibited contracted distributions (>20% habitat loss due to invasion). Upstream invasion by centrarchids isolated and fragmented P. afer populations into headwater refugia, while top down invasion by salmonids excluded B. trevelyani from invaded, more pristine stream reaches, by forcing the species into degraded unsuitable lower stream reaches. Predation also disrupted population processes such as adult dispersal for P. afer, and centrarchid-invaded zones acted as demographic sinks, where adults dispersing through invaded reaches were rapidly depleted. While the Mandela lineage of P. afer exhibited little within or between drainage genetic structuring, B. trevelyani was >4% divergent between drainages, and up to 2% divergent between streams within the Keiskamma River system (Chapter 7). The distribution of genetic diversity for B. trevelyani also indicated that the loss of diversity was imminent without immediate conservation interventions. This thesis has provided conclusive evidence that native fishes are vulnerable to invasion and that non-native predatory fishes have significant impacts on native fishes in Eastern Cape headwater streams. If management and conservation measures are implemented, the unwanted introduction and spread of non-native fishes may be restricted, allowing native fishes opportunities for recovery.
- Full Text:
- Date Issued: 2014
Impact of batting skill on pacing during repeated sprints between the wickets.
- Authors: Elliott, Andrea
- Date: 2014
- Subjects: Cricket -- Batting -- Research , Sprinting -- Research , Cricket players , Exercise -- Physiological aspects -- Research , Sports -- Physiological aspects -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5153 , http://hdl.handle.net/10962/d1013546
- Description: Introduction: With batting in cricket, there is no known end point, making the allocation of resources and the development of a suitable pacing strategy more difficult. How batsmen allocate resources and pace themselves when repeatedly sprinting between the wickets is therefore not known. According to the ‘anticipatory feedback’ model, the level of expertise/experience has a substantial influence on the development of a suitable pacing strategy. Skilled or experienced batsmen may therefore have a greater ability to develop and implement a pacing strategy compared to that of novice or less-skilled batsmen. Purpose: To assess whether the absence of a known end point at the beginning of repeated sprint bouts between the wickets effects how batsmen pace themselves comparing skilled and less-skilled batsmen. Methods: Twenty-four male cricketers from a university league were selected. Twelve skilled batsmen (players in the top five batting order), and 12 less-skilled batsmen (players in the bottom five batting order) completed three experimental. All trials required batsmen to complete the same number of shuttle sprints (14 shuttles and therefore 28 runs), while only the information provided before each trial differed. Control Trial: This trial is also referred to as the ‘informed’ trial as the batsmen are aware of the exercise requirements (end point). Unknown Trial: The batsmen were not informed of the exercise end point and were required to run on command for an indefinite period (28 runs). Deceptive Trial: Batsmen’ were incorrectly informed with regards to the number of sprints (told they were only doing 14 runs when in fact they were doing 28 runs). Muscle activity, sprint times and RPE measures were obtained during all three trials and compared. Results: Significant (p<0.05) group effects were apparent for sprint times and, ‘central’ and ‘local’ RPE. Specifically, skilled batsmen obtained the faster mean sprint times, and less-skilled batsmen reported the higher mean ‘central’ and ‘local’ RPE values in all three experimental trials. There were no significant group effects for muscle activation. Skilled batsmen did however have lower muscle activation compared to less-skilled batsmen in all three trials. Furthermore, general trends revealed that sprint times and muscle activation decreased over time (from shuttle 1 to shuttle 14), and RPE (‘central’ and ‘local’) ratings increased, regardless of the experimental trials. Skilled batsmen performed the best in all three trials. This was determined by the attainment of faster sprint times, lower muscle activation and low RPE ratings in each of the three trials. The assessment of the relationship of the dependent variables measured in each trial, did however suggest that skilled batsmen performed best in the deceptive trial while less-skilled batsmen performed best in the control trial. Skilled batsmen thus showed superior performance when trial requirements were unclear. Less-skilled batsmen however, were seen to experience decrements in performance when information regarding the end point was unknown or misleading. Conclusion: It can thus be concluded that previous experience facilitates in the obtainment of improved sprint times between the wickets, especially when the exact end point is unknown.
- Full Text:
- Date Issued: 2014
- Authors: Elliott, Andrea
- Date: 2014
- Subjects: Cricket -- Batting -- Research , Sprinting -- Research , Cricket players , Exercise -- Physiological aspects -- Research , Sports -- Physiological aspects -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5153 , http://hdl.handle.net/10962/d1013546
- Description: Introduction: With batting in cricket, there is no known end point, making the allocation of resources and the development of a suitable pacing strategy more difficult. How batsmen allocate resources and pace themselves when repeatedly sprinting between the wickets is therefore not known. According to the ‘anticipatory feedback’ model, the level of expertise/experience has a substantial influence on the development of a suitable pacing strategy. Skilled or experienced batsmen may therefore have a greater ability to develop and implement a pacing strategy compared to that of novice or less-skilled batsmen. Purpose: To assess whether the absence of a known end point at the beginning of repeated sprint bouts between the wickets effects how batsmen pace themselves comparing skilled and less-skilled batsmen. Methods: Twenty-four male cricketers from a university league were selected. Twelve skilled batsmen (players in the top five batting order), and 12 less-skilled batsmen (players in the bottom five batting order) completed three experimental. All trials required batsmen to complete the same number of shuttle sprints (14 shuttles and therefore 28 runs), while only the information provided before each trial differed. Control Trial: This trial is also referred to as the ‘informed’ trial as the batsmen are aware of the exercise requirements (end point). Unknown Trial: The batsmen were not informed of the exercise end point and were required to run on command for an indefinite period (28 runs). Deceptive Trial: Batsmen’ were incorrectly informed with regards to the number of sprints (told they were only doing 14 runs when in fact they were doing 28 runs). Muscle activity, sprint times and RPE measures were obtained during all three trials and compared. Results: Significant (p<0.05) group effects were apparent for sprint times and, ‘central’ and ‘local’ RPE. Specifically, skilled batsmen obtained the faster mean sprint times, and less-skilled batsmen reported the higher mean ‘central’ and ‘local’ RPE values in all three experimental trials. There were no significant group effects for muscle activation. Skilled batsmen did however have lower muscle activation compared to less-skilled batsmen in all three trials. Furthermore, general trends revealed that sprint times and muscle activation decreased over time (from shuttle 1 to shuttle 14), and RPE (‘central’ and ‘local’) ratings increased, regardless of the experimental trials. Skilled batsmen performed the best in all three trials. This was determined by the attainment of faster sprint times, lower muscle activation and low RPE ratings in each of the three trials. The assessment of the relationship of the dependent variables measured in each trial, did however suggest that skilled batsmen performed best in the deceptive trial while less-skilled batsmen performed best in the control trial. Skilled batsmen thus showed superior performance when trial requirements were unclear. Less-skilled batsmen however, were seen to experience decrements in performance when information regarding the end point was unknown or misleading. Conclusion: It can thus be concluded that previous experience facilitates in the obtainment of improved sprint times between the wickets, especially when the exact end point is unknown.
- Full Text:
- Date Issued: 2014
An exploration of James Dreier’s Standard Tune Learning Sequence in a self-directed learning environment : an interpretative phenomenological analysis
- Authors: Ellis, Stephen James
- Date: 2014
- Subjects: Dreier, James Drum -- Performance -- Studies and exercises Drum -- Methods -- Self-instruction Drum -- Instruction and study Drummers (Musicians)
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:2680 , http://hdl.handle.net/10962/d1011312
- Description: This qualitative case study was undertaken in order to explore the experiences of drum set students who apply themselves to James Dreier’s Standard Tune Learning Sequence (STLS) in a self-directed learning environment. These experiences ultimately shed light on how best to implement Differentiated Instruction to the STLS. The study draws on the experience of three adult drum students under the instruction of the author. The students were provided with the STLS and left to proceed with it on their own. They were asked to keep a record of their progress in the form of a learning journal. These learning journals were used, in conjunction with transcribed interviews and learner profiles, as data for this study and as such were subjected to Interpretative Phenomenological Analysis. The study recognizes three factors which affect the student’s successful progression through the STLS: readiness, interest and meaning. Each factor is discussed in relation to literature on differentiated Instruction. Recommendations are made regarding the implementation of Differentiated Instruction to the STLS.
- Full Text:
- Date Issued: 2014
- Authors: Ellis, Stephen James
- Date: 2014
- Subjects: Dreier, James Drum -- Performance -- Studies and exercises Drum -- Methods -- Self-instruction Drum -- Instruction and study Drummers (Musicians)
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:2680 , http://hdl.handle.net/10962/d1011312
- Description: This qualitative case study was undertaken in order to explore the experiences of drum set students who apply themselves to James Dreier’s Standard Tune Learning Sequence (STLS) in a self-directed learning environment. These experiences ultimately shed light on how best to implement Differentiated Instruction to the STLS. The study draws on the experience of three adult drum students under the instruction of the author. The students were provided with the STLS and left to proceed with it on their own. They were asked to keep a record of their progress in the form of a learning journal. These learning journals were used, in conjunction with transcribed interviews and learner profiles, as data for this study and as such were subjected to Interpretative Phenomenological Analysis. The study recognizes three factors which affect the student’s successful progression through the STLS: readiness, interest and meaning. Each factor is discussed in relation to literature on differentiated Instruction. Recommendations are made regarding the implementation of Differentiated Instruction to the STLS.
- Full Text:
- Date Issued: 2014
The play, Mies Julie, and the issue of land redistribution in the context of the revisionist western genre
- Authors: Emery, David
- Date: 2014
- Subjects: Land reform in literature , Land reform -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8435 , http://hdl.handle.net/10948/d1020954
- Description: The play Miss Julie was published by playwright August Strindberg in 1888. It is a comment on the class issues in Sweden at the time (Leib, 2011). This commentary is achieved through telling the fictional tale of Julie, the daughter of a wealthy Swedish landowner, Jean, her father’s manservant, and Kristin, Jean’s betrothed who is also the house cook. During the course of a night and the next morning, Jean and Julie admit their feelings for one another, sleep together and plan to run away to start a hotel. In the morning, they ask Kristin to join them when they encounter her on her way to church. She refuses and vows to put an end to their plans. Seeing no way out, and fearing the wrath of Julie’s father, Jean hands Julie a razor and she walks outside, the inference being that she will commit suicide. The play Mies Julie is a South African adaptation, by South African playwright Yael Farber, of the August Strindberg play Miss Julie set in a farming kitchen in the Eastern Cape Karoo that premiered at the Grahamstown National Arts Festival in 2012. It has since been brought to London, the Edinburgh Festival and New York. Mies Julie presents a power struggle between Julie, the daughter of the white Afrikaans farm owner, and John, her father’s favourite farm worker and the son of Christine, the housekeeper who raised Julie. By altering Christine’s role from that in Strindberg’s play, where she was John’s (there Jean’s) fiancé, to that of John’s mother and Julie’s nursemaid, playwright Yael Farber has brought to the fore an interesting irony of South Africa’s history, which has been observed by Ena Jansen (2011) – white children who are raised, both during and post-apartheid, by black women who become part of the household of the privileged white families they work for.
- Full Text:
- Date Issued: 2014
- Authors: Emery, David
- Date: 2014
- Subjects: Land reform in literature , Land reform -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8435 , http://hdl.handle.net/10948/d1020954
- Description: The play Miss Julie was published by playwright August Strindberg in 1888. It is a comment on the class issues in Sweden at the time (Leib, 2011). This commentary is achieved through telling the fictional tale of Julie, the daughter of a wealthy Swedish landowner, Jean, her father’s manservant, and Kristin, Jean’s betrothed who is also the house cook. During the course of a night and the next morning, Jean and Julie admit their feelings for one another, sleep together and plan to run away to start a hotel. In the morning, they ask Kristin to join them when they encounter her on her way to church. She refuses and vows to put an end to their plans. Seeing no way out, and fearing the wrath of Julie’s father, Jean hands Julie a razor and she walks outside, the inference being that she will commit suicide. The play Mies Julie is a South African adaptation, by South African playwright Yael Farber, of the August Strindberg play Miss Julie set in a farming kitchen in the Eastern Cape Karoo that premiered at the Grahamstown National Arts Festival in 2012. It has since been brought to London, the Edinburgh Festival and New York. Mies Julie presents a power struggle between Julie, the daughter of the white Afrikaans farm owner, and John, her father’s favourite farm worker and the son of Christine, the housekeeper who raised Julie. By altering Christine’s role from that in Strindberg’s play, where she was John’s (there Jean’s) fiancé, to that of John’s mother and Julie’s nursemaid, playwright Yael Farber has brought to the fore an interesting irony of South Africa’s history, which has been observed by Ena Jansen (2011) – white children who are raised, both during and post-apartheid, by black women who become part of the household of the privileged white families they work for.
- Full Text:
- Date Issued: 2014
An investigation of stakeholder participation and learning in two schools within the Seychelles Eco-School programme
- Authors: Emilie, Shane Antonio
- Date: 2014
- Subjects: Environmental education -- Seychelles Schools -- Environmental aspects -- Seychelles Education, Primary -- Parent participation -- Seychelles Education, Secondary -- Parent participation -- Seychelles Student participation in administration -- Education (Primary) -- Seychelles Student participation in administration -- Education (Secondary) -- Seychelles Student participation in curriculum planning -- Education (Primary) -- Seychelles Student participation in curriculum planning -- Education (Secondary) -- Seychelles Education, Primary -- Seychelles Education, Secondary -- Seychelles
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1969 , http://hdl.handle.net/10962/d1011961
- Description: The aim of this study was to investigate stakeholder participation and learning in the Seychelles Eco-School programme within a primary school context and a secondary school context. Findings from each Eco-School have been presented in two case studies with the goal to explore and describe how teachers, students, parents and organizations are participating and learning in the Eco-School programme. Six elements of school community were used to deepen understanding of the participatory and learning processes in each Eco-School, namely, leadership, management and administration, curriculum planning, teaching and learning, resource use and management, management of physical surrounds of the school and networks and partnerships. Some of the contextual variables in each Eco-School that were constraining and enabling stakeholder participation and learning in the programme have also been explored within this study. Data in this study was generated from historical documents analysed, semi-structured interviews, focus group discussions and field notes. Data was also generated from questionnaires completed by organizations involved in the programme at each Eco- School. Data was analysed in two phases, the first phase involved reading across data generated from the methods mentioned above to organize the data under broad themes in relation to the elements of school community. The second phase of analysis involved the use of the conceptual framework of situating learning in a community of practice to interpret and discuss the participatory and learning processes across the two cases. The study showed that in each Eco-School there is a community of practice with the active involvement of teachers and students and the occasional involvement of parents and organizations. Students and adults are learning as they engage together in classroom and field-work interactions, environmental projects, environmental activities to commemorate environmental theme days, environmental campaigns and co-curricular activities through the practices of each Eco-School community. It was also discovered that students and adults are making different contributions in the Eco-School community based on their level of participation in the programme. It is hoped that the findings in this research contribute information regarding community participation in environmental education programmes like the Seychelles Eco-School programme. In addition, findings will inform the Seychelles Government and its partners to consider the possibility of enhancing school and community partnerships to respond to some of the challenges of participation and learning in the Eco-School programme.
- Full Text:
- Date Issued: 2014
- Authors: Emilie, Shane Antonio
- Date: 2014
- Subjects: Environmental education -- Seychelles Schools -- Environmental aspects -- Seychelles Education, Primary -- Parent participation -- Seychelles Education, Secondary -- Parent participation -- Seychelles Student participation in administration -- Education (Primary) -- Seychelles Student participation in administration -- Education (Secondary) -- Seychelles Student participation in curriculum planning -- Education (Primary) -- Seychelles Student participation in curriculum planning -- Education (Secondary) -- Seychelles Education, Primary -- Seychelles Education, Secondary -- Seychelles
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1969 , http://hdl.handle.net/10962/d1011961
- Description: The aim of this study was to investigate stakeholder participation and learning in the Seychelles Eco-School programme within a primary school context and a secondary school context. Findings from each Eco-School have been presented in two case studies with the goal to explore and describe how teachers, students, parents and organizations are participating and learning in the Eco-School programme. Six elements of school community were used to deepen understanding of the participatory and learning processes in each Eco-School, namely, leadership, management and administration, curriculum planning, teaching and learning, resource use and management, management of physical surrounds of the school and networks and partnerships. Some of the contextual variables in each Eco-School that were constraining and enabling stakeholder participation and learning in the programme have also been explored within this study. Data in this study was generated from historical documents analysed, semi-structured interviews, focus group discussions and field notes. Data was also generated from questionnaires completed by organizations involved in the programme at each Eco- School. Data was analysed in two phases, the first phase involved reading across data generated from the methods mentioned above to organize the data under broad themes in relation to the elements of school community. The second phase of analysis involved the use of the conceptual framework of situating learning in a community of practice to interpret and discuss the participatory and learning processes across the two cases. The study showed that in each Eco-School there is a community of practice with the active involvement of teachers and students and the occasional involvement of parents and organizations. Students and adults are learning as they engage together in classroom and field-work interactions, environmental projects, environmental activities to commemorate environmental theme days, environmental campaigns and co-curricular activities through the practices of each Eco-School community. It was also discovered that students and adults are making different contributions in the Eco-School community based on their level of participation in the programme. It is hoped that the findings in this research contribute information regarding community participation in environmental education programmes like the Seychelles Eco-School programme. In addition, findings will inform the Seychelles Government and its partners to consider the possibility of enhancing school and community partnerships to respond to some of the challenges of participation and learning in the Eco-School programme.
- Full Text:
- Date Issued: 2014
Understanding how trainee teachers engage with prior everyday knowledge and experience associated with biological concepts during integrated natural science education 5-7 : a case study
- Authors: Enghono, Albertina Magano
- Date: 2014
- Subjects: Biology teachers -- Training of -- Namibia -- Case studies Teacher educators -- Training of -- Case studies Teachers -- Training of -- Namibia -- Case studies Education -- Namibia -- Case studies Prior learning -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1970 , http://hdl.handle.net/10962/d1011972
- Description: Since the Namibian independence in 1990, the education system has undergone some major revamping which involved the adoption of social constructivist perspectives in the teaching and learning of sciences. This learning theory acknowledges learners’ background prior knowledge as valuable tools in the effective construction of science concepts during lessons. A corollary is that the socio-cultural circumstances of learners might negatively influence the way learners construct new knowledge in the science classroom if they are not taken into consideration. This study was thus prompted by the need to understand how trainee science teachers engage with prior everyday knowledge and experiences, so as to enhance the conceptual development of biological concepts. The study was qualitative and it was underpinned by an interpretive paradigm with some elements of action research. Science trainee teachers at Katima Mulilo, Unam Campus were used as research participants. The techniques used to gather data included document analysis, brainstorming, observation, audio-visual, microteaching and semi-structured interviews. The results of this study showed that the changes that occurred during microteaching practices of the four trainee teachers involved in the study reflected their professional development in this approach. However, it emerged that prior everyday knowledge can be both a barrier and enabler to the construction of meaningful teaching and learning; hence its oversight may lead to instructional failures. The findings also indicated that selected platforms are essential to enable trainee teachers to incorporate prior everyday knowledge and experiences into the teaching of Western science. However, larger scale study should be conducted in order to deepen the understanding of the topic.
- Full Text:
- Date Issued: 2014
- Authors: Enghono, Albertina Magano
- Date: 2014
- Subjects: Biology teachers -- Training of -- Namibia -- Case studies Teacher educators -- Training of -- Case studies Teachers -- Training of -- Namibia -- Case studies Education -- Namibia -- Case studies Prior learning -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1970 , http://hdl.handle.net/10962/d1011972
- Description: Since the Namibian independence in 1990, the education system has undergone some major revamping which involved the adoption of social constructivist perspectives in the teaching and learning of sciences. This learning theory acknowledges learners’ background prior knowledge as valuable tools in the effective construction of science concepts during lessons. A corollary is that the socio-cultural circumstances of learners might negatively influence the way learners construct new knowledge in the science classroom if they are not taken into consideration. This study was thus prompted by the need to understand how trainee science teachers engage with prior everyday knowledge and experiences, so as to enhance the conceptual development of biological concepts. The study was qualitative and it was underpinned by an interpretive paradigm with some elements of action research. Science trainee teachers at Katima Mulilo, Unam Campus were used as research participants. The techniques used to gather data included document analysis, brainstorming, observation, audio-visual, microteaching and semi-structured interviews. The results of this study showed that the changes that occurred during microteaching practices of the four trainee teachers involved in the study reflected their professional development in this approach. However, it emerged that prior everyday knowledge can be both a barrier and enabler to the construction of meaningful teaching and learning; hence its oversight may lead to instructional failures. The findings also indicated that selected platforms are essential to enable trainee teachers to incorporate prior everyday knowledge and experiences into the teaching of Western science. However, larger scale study should be conducted in order to deepen the understanding of the topic.
- Full Text:
- Date Issued: 2014
The design of formula one pit complex for Cape Town
- Authors: Erlangsen, Ashly A
- Date: 2014
- Subjects: Racetracks (Automobile racing) -- South Africa -- Cape Town Sports facilities -- South Africa -- Cape Town
- Language: English
- Type: Thesis , Masters , MArch
- Identifier: http://hdl.handle.net/10948/39032 , vital:35022
- Description: The last time a Formula One Grand Prix took place in South Africa was in 1993. In recent years, there has been a real interest in bringing the event to Cape Town and several proposals have been put forward to the City of Cape Town. Unfortunately, they have all been unsuccessful for various reasons, but mainly, because of the large financial costs involved. The cost involved to build all the infrastructure required for the event is usually reserved for developed, wealthy countries. Despite the positive role that a major event like this can have on the image of a city, there is resistance to invest money into a stadium or sporting infrastructure, which has the sole purpose of serving one big event like a Grand Prix. This treatise therefore focuses on the design of a multi-functional pit complex for a Formula One Grand Prix Street Circuit in Green Point, Cape Town. As an architectural example, which explores the potential of an adaptable approach to creating a long-term, economically sustainable piece of event infrastructure. The design includes all the necessary requirements for a facility of this nature including, a media centre, pit garages, race control centre and hospitality lounges, but adaptable, so as to function within the context of the Green Point area between annual Grand Prix events. The aim is to investigate the issues relating to Formula One Grand Prix as an event and the impact it has on a city. It will further endeavour to conduct a comprehensive study of the context of Green Point so as to gain an understanding of suitable, viable activities that will form part of the pit complex when the race is not in progress. Research into the creation of a structure formed by interchangeable building components and demountable connections are undertaken so as to promote the possibility for future transformation. As a result of this multi-functional, adaptable approach, the building is used all year round. This effectively reduces maintenance costs associated with infrequently-used buildings and allows for the sustainable use of the infrastructure, as a public asset, when the race is not in progress.
- Full Text:
- Date Issued: 2014
- Authors: Erlangsen, Ashly A
- Date: 2014
- Subjects: Racetracks (Automobile racing) -- South Africa -- Cape Town Sports facilities -- South Africa -- Cape Town
- Language: English
- Type: Thesis , Masters , MArch
- Identifier: http://hdl.handle.net/10948/39032 , vital:35022
- Description: The last time a Formula One Grand Prix took place in South Africa was in 1993. In recent years, there has been a real interest in bringing the event to Cape Town and several proposals have been put forward to the City of Cape Town. Unfortunately, they have all been unsuccessful for various reasons, but mainly, because of the large financial costs involved. The cost involved to build all the infrastructure required for the event is usually reserved for developed, wealthy countries. Despite the positive role that a major event like this can have on the image of a city, there is resistance to invest money into a stadium or sporting infrastructure, which has the sole purpose of serving one big event like a Grand Prix. This treatise therefore focuses on the design of a multi-functional pit complex for a Formula One Grand Prix Street Circuit in Green Point, Cape Town. As an architectural example, which explores the potential of an adaptable approach to creating a long-term, economically sustainable piece of event infrastructure. The design includes all the necessary requirements for a facility of this nature including, a media centre, pit garages, race control centre and hospitality lounges, but adaptable, so as to function within the context of the Green Point area between annual Grand Prix events. The aim is to investigate the issues relating to Formula One Grand Prix as an event and the impact it has on a city. It will further endeavour to conduct a comprehensive study of the context of Green Point so as to gain an understanding of suitable, viable activities that will form part of the pit complex when the race is not in progress. Research into the creation of a structure formed by interchangeable building components and demountable connections are undertaken so as to promote the possibility for future transformation. As a result of this multi-functional, adaptable approach, the building is used all year round. This effectively reduces maintenance costs associated with infrequently-used buildings and allows for the sustainable use of the infrastructure, as a public asset, when the race is not in progress.
- Full Text:
- Date Issued: 2014
Enterpreneurial orientation at Nelson Mandela Metropolitan University
- Fadairo, Feyisara Olufunmilayo
- Authors: Fadairo, Feyisara Olufunmilayo
- Date: 2014
- Subjects: Entrepreneurship -- South Africa , University-based new business enterprises -- South Africa , Nelson Mandela Metropolitan University
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9348 , http://hdl.handle.net/10948/d1020293
- Description: In the knowledge world into which mankind has progressed, universities are engines of economic growth. Their role has changed from producers of labour force to equal contributors - along with government and industry- in regional and national economic and social growth and development. Universities that will survive and succeed in this new climate must embrace entrepreneurship - become entrepreneurially oriented. As in any other organisation corporate entrepreneurship processes explain how entrepreneurship is implemented and diffused throughout a university, and its members must perceive the internal organisational culture as innovation supporting for entrepreneurship to flourish. Hence, the importance of studying internal environmental conditions that influence / enable corporate entrepreneurship. This study investigated NMMU’s entrepreneurial orientation by first determining what an entrepreneurial university is and its key attributes. Next it identified the key structural factors influencing university entrepreneurship and enquired how these structural factors can be influenced to enhance entrepreneurship at NMMU. To this end, survey method was used to sample perception of the university middle managers. The study first determined the level of entrepreneurship in NMMU by measuring its entrepreneurial intensity and then attempted to locate its position on the entrepreneurial grid. Next the level of the university’s internal environmental support for entrepreneurship was determined. The university’s culture was found to be the key factor influencing entrepreneurship with time availability and work discretion as key internal factors through which NMMU’s entrepreneurial culture could be improved. Proactivity and frequency dimensions of entrepreneurship were found to lead to significant improvement in the university’s entrepreneurial output and based on the outcome of the study; suggestions were made on ways of incorporating findings to better improve entrepreneurial orientation.
- Full Text:
- Date Issued: 2014
- Authors: Fadairo, Feyisara Olufunmilayo
- Date: 2014
- Subjects: Entrepreneurship -- South Africa , University-based new business enterprises -- South Africa , Nelson Mandela Metropolitan University
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9348 , http://hdl.handle.net/10948/d1020293
- Description: In the knowledge world into which mankind has progressed, universities are engines of economic growth. Their role has changed from producers of labour force to equal contributors - along with government and industry- in regional and national economic and social growth and development. Universities that will survive and succeed in this new climate must embrace entrepreneurship - become entrepreneurially oriented. As in any other organisation corporate entrepreneurship processes explain how entrepreneurship is implemented and diffused throughout a university, and its members must perceive the internal organisational culture as innovation supporting for entrepreneurship to flourish. Hence, the importance of studying internal environmental conditions that influence / enable corporate entrepreneurship. This study investigated NMMU’s entrepreneurial orientation by first determining what an entrepreneurial university is and its key attributes. Next it identified the key structural factors influencing university entrepreneurship and enquired how these structural factors can be influenced to enhance entrepreneurship at NMMU. To this end, survey method was used to sample perception of the university middle managers. The study first determined the level of entrepreneurship in NMMU by measuring its entrepreneurial intensity and then attempted to locate its position on the entrepreneurial grid. Next the level of the university’s internal environmental support for entrepreneurship was determined. The university’s culture was found to be the key factor influencing entrepreneurship with time availability and work discretion as key internal factors through which NMMU’s entrepreneurial culture could be improved. Proactivity and frequency dimensions of entrepreneurship were found to lead to significant improvement in the university’s entrepreneurial output and based on the outcome of the study; suggestions were made on ways of incorporating findings to better improve entrepreneurial orientation.
- Full Text:
- Date Issued: 2014
The presumption of gult created by Section 235(2) of the Tax Administration Act: a constitutional and comparative perspective
- Authors: Faifi, Farai
- Date: 2014
- Subjects: Guilt (Law) -- South Africa , Presumption of innocence -- South Africa , Income tax -- Law and legislation -- South Africa , Human rights -- Taxation -- South Africa , Taxpayer compliance -- Moral and ethical aspects -- South Africa , Taxation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:907 , http://hdl.handle.net/10962/d1012979
- Description: This research examined the legal nature of the presumption of guilt created by section 235(2) of the South African Tax Admiration Act and considered whether or not its practical application violates the taxpayer’s fundamental right contained in section 35(3) of the Constitution, which gives every accused taxpayer the right to a fair trial, including the right to be presumed innocent. The research also provided clarity on the constitutionality of this presumption because it has been widely criticised for unjustifiably violating the taxpayer's constitutional right to a fair trial. The conclusion reached is that the presumption created by section 235(2) of the Tax Administration Act constitutes an evidentiary burden rather than a reverse onus. It does not create the possibility of conviction, unlike a reverse onus where conviction is possible, despite the existence of a reasonable doubt. Therefore, it does not violate the accused taxpayer’s the right to a fair trial and the right to be presumed innocent and hence it is constitutional. Accordingly, the chances that the accused taxpayer will succeed in challenging the constitutionality of section 235(2) of the Act are slim.
- Full Text:
- Date Issued: 2014
- Authors: Faifi, Farai
- Date: 2014
- Subjects: Guilt (Law) -- South Africa , Presumption of innocence -- South Africa , Income tax -- Law and legislation -- South Africa , Human rights -- Taxation -- South Africa , Taxpayer compliance -- Moral and ethical aspects -- South Africa , Taxation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:907 , http://hdl.handle.net/10962/d1012979
- Description: This research examined the legal nature of the presumption of guilt created by section 235(2) of the South African Tax Admiration Act and considered whether or not its practical application violates the taxpayer’s fundamental right contained in section 35(3) of the Constitution, which gives every accused taxpayer the right to a fair trial, including the right to be presumed innocent. The research also provided clarity on the constitutionality of this presumption because it has been widely criticised for unjustifiably violating the taxpayer's constitutional right to a fair trial. The conclusion reached is that the presumption created by section 235(2) of the Tax Administration Act constitutes an evidentiary burden rather than a reverse onus. It does not create the possibility of conviction, unlike a reverse onus where conviction is possible, despite the existence of a reasonable doubt. Therefore, it does not violate the accused taxpayer’s the right to a fair trial and the right to be presumed innocent and hence it is constitutional. Accordingly, the chances that the accused taxpayer will succeed in challenging the constitutionality of section 235(2) of the Act are slim.
- Full Text:
- Date Issued: 2014
Genesis of karst-hosted manganese ores of the Postmasburg Manganese Field, South Africa with emphasis on evidence for hydrothermal processes
- Authors: Fairey, Brenton John
- Date: 2014
- Subjects: Karst -- South Africa -- Postmasburg , Manganese ores -- South Africa -- Postmasburg , Hydrothermal alteration -- South Africa -- Postmasburg , Manganese mines and mining -- South Africa -- Northern Cape , Petrology , Mineralogical chemistry , Geochemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5094 , http://hdl.handle.net/10962/d1020904
- Description: The Postmasburg Manganese Field (PMF), located in the Northern Cape Province of South Africa, once represented one of the largest sources of manganese ore worldwide. However, the discovery of the giant manganese deposits of the Kalahari Manganese Field (KMF) led to the gradual decline in manganese mining activity in the PMF. Two belts of manganese ore deposits have been distinguished in the PMF, namely the Western Belt of ferruginous manganese ores and the Eastern Belt of siliceous manganese ores. Prevailing models of ore formation in these two belts invoke karstification of manganese-rich dolomites and residual accumulation of manganese wad which later underwent diagenetic and low-grade metamorphic processes. For the most part, the role of hydrothermal processes in ore formation and metasomatic alteration is not addressed. The identification of an abundance of common and some rare Al-, Na-, K- and Ba-bearing minerals, particularly aegirine, albite, microcline, banalsite, sérandite-pectolite, paragonite and natrolite in the PMF ores studied in this thesis, is indicative of the influence of hydrothermal activity. Enrichments in Na, K and/or Ba in the ores are generally on a percentage level for the majority of samples analysed through bulk-rock techniques. The discovery of a Ba-Mn arsenate/vanadate similar to gamagarite may also indicate that the hydrothermal fluid affecting the ores was not only alkali-rich but also probably contained some As and V. The fluid was likely to be oxidized and alkaline in nature and is thought to have been a mature basinal brine. Various replacement textures, particularly of Na- and Krich minerals by Ba-bearing phases, suggest sequential deposition of gangue as well as oreminerals from the hydrothermal fluid, with Ba phases being deposited at a later stage. The stratigraphic variability of the studied ores and the deviation of their character from the pigeon-hole-type classification of ferruginous and siliceous ores in the literature, suggests that a re-evaluation of genetic models is warranted. The discovery of hydrothermallydeposited alkali-rich assemblages in the PMF and KMF provides grounding for further investigation into a possible regional-scale hydrothermal event at least re-constituting the ores. Some shortcomings in previous works include disregard for the highly variable nature of the PMF deposits, the effects of hydrothermal activity of the ores and the existence of stratigraphic discrepancies. This study provides a single, broad model for the development of all manganese deposits of the PMF. The source of metals is attributed to all formations that stratigraphically overly the Reivilo Formation of the Campbellrand Subgroup (including the Reivilo Formation itself). The main process by which metals are accumulated is attributed to karstification of the dolomites. The interaction of oxidized, alkaline brines with the ores is considered and the overlying Asbestos Hills Subgroup BIF is suggested as a potential source of alkali metals.
- Full Text:
- Date Issued: 2014
- Authors: Fairey, Brenton John
- Date: 2014
- Subjects: Karst -- South Africa -- Postmasburg , Manganese ores -- South Africa -- Postmasburg , Hydrothermal alteration -- South Africa -- Postmasburg , Manganese mines and mining -- South Africa -- Northern Cape , Petrology , Mineralogical chemistry , Geochemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5094 , http://hdl.handle.net/10962/d1020904
- Description: The Postmasburg Manganese Field (PMF), located in the Northern Cape Province of South Africa, once represented one of the largest sources of manganese ore worldwide. However, the discovery of the giant manganese deposits of the Kalahari Manganese Field (KMF) led to the gradual decline in manganese mining activity in the PMF. Two belts of manganese ore deposits have been distinguished in the PMF, namely the Western Belt of ferruginous manganese ores and the Eastern Belt of siliceous manganese ores. Prevailing models of ore formation in these two belts invoke karstification of manganese-rich dolomites and residual accumulation of manganese wad which later underwent diagenetic and low-grade metamorphic processes. For the most part, the role of hydrothermal processes in ore formation and metasomatic alteration is not addressed. The identification of an abundance of common and some rare Al-, Na-, K- and Ba-bearing minerals, particularly aegirine, albite, microcline, banalsite, sérandite-pectolite, paragonite and natrolite in the PMF ores studied in this thesis, is indicative of the influence of hydrothermal activity. Enrichments in Na, K and/or Ba in the ores are generally on a percentage level for the majority of samples analysed through bulk-rock techniques. The discovery of a Ba-Mn arsenate/vanadate similar to gamagarite may also indicate that the hydrothermal fluid affecting the ores was not only alkali-rich but also probably contained some As and V. The fluid was likely to be oxidized and alkaline in nature and is thought to have been a mature basinal brine. Various replacement textures, particularly of Na- and Krich minerals by Ba-bearing phases, suggest sequential deposition of gangue as well as oreminerals from the hydrothermal fluid, with Ba phases being deposited at a later stage. The stratigraphic variability of the studied ores and the deviation of their character from the pigeon-hole-type classification of ferruginous and siliceous ores in the literature, suggests that a re-evaluation of genetic models is warranted. The discovery of hydrothermallydeposited alkali-rich assemblages in the PMF and KMF provides grounding for further investigation into a possible regional-scale hydrothermal event at least re-constituting the ores. Some shortcomings in previous works include disregard for the highly variable nature of the PMF deposits, the effects of hydrothermal activity of the ores and the existence of stratigraphic discrepancies. This study provides a single, broad model for the development of all manganese deposits of the PMF. The source of metals is attributed to all formations that stratigraphically overly the Reivilo Formation of the Campbellrand Subgroup (including the Reivilo Formation itself). The main process by which metals are accumulated is attributed to karstification of the dolomites. The interaction of oxidized, alkaline brines with the ores is considered and the overlying Asbestos Hills Subgroup BIF is suggested as a potential source of alkali metals.
- Full Text:
- Date Issued: 2014
Incapacity for poor work performance in the education sector
- Authors: Faker, Mogamat Salie
- Date: 2014
- Subjects: Capacity and disability , Employees -- Dismissal of , Employees -- Rating of -- Law and legislation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10252 , http://hdl.handle.net/10948/d1020209
- Description: According to the latest Education Statistics Report published by the Department of Basic Education in March 2013, there were 12 680 829 learners and students in the basic education system in 2011, who attended 30 992 education institutions and were served by 441 128 educators. The vision of the Department of Basic Education is of a South Africa in which all our people have access to lifelong learning and education and training, which will, in turn, contribute towards improving the quality of life. Ultimately this will influence the building of a peaceful, prosperous and democratic South Africa. The emphasis is on excellence. Therefore maintaining high standards of performance and professionalism is a national imperative. However, this has not always been the case in terms of performance. For more than a decade we have witnessed dismal results in literacy and numeracy. This was accompanied by a low throughput rate. Despite the poor matric, literacy and numeracy results in South Africa as well as the low throughput rate, no teacher has been formally charged for poor performance in the last two decades. South Africa’s education budget is regarded as one of the highest in the developing world. Since 1993 the education budget has also grown substantially. South Africa’s education expenditure on education has grown from R30 billion in 1994/05 to R101 billion in 2007/08. Spending on education grew even further from R207 billion in 2012/13 to a projected R236 billion in 2014/15. Additional allocations of R18.8 billion over the medium term are accommodated, including equalisation of learner subsidies for no-fee schools and expanded access to grade R.6 Over the rest of the medium-term-expenditure framework (MTEF),7 spending on education, sport and culture will amount to R233 billion in 2013/14. The investment in education has not yet yielded the desired results and the outcome of education is not in keeping with the substantial input. This crisis in education is one of the major challenges facing Government, Administrators, educators, parents and children of today. According to Spaull,9 the South African government spends the equivalent of $1225 (R12440.26)10 per child on primary education, yet accomplishes less than the government of Kenya which spends only the equivalent of $258 (R2620.80)11 per child. Various reasons such as poverty, management, leadership, imbalances of the past, two unequal education systems, poor management, training and development, non-accountability, role of government and unions, have been identified for the poor state of our education system. However, what is noticeably absent and hardly mentioned in any of the position papers, is that not a single teacher has been held accountable and dismissed for incapacity for the poor performance in the education sector. Unfortunately, there is no record in any of the provincial education departments’ annual reports that a teacher has been dismissed or at least placed on a formal programme of incapacity for poor performance. Therefore, we have to ask the question: “Are we getting value for money?".
- Full Text:
- Date Issued: 2014
- Authors: Faker, Mogamat Salie
- Date: 2014
- Subjects: Capacity and disability , Employees -- Dismissal of , Employees -- Rating of -- Law and legislation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10252 , http://hdl.handle.net/10948/d1020209
- Description: According to the latest Education Statistics Report published by the Department of Basic Education in March 2013, there were 12 680 829 learners and students in the basic education system in 2011, who attended 30 992 education institutions and were served by 441 128 educators. The vision of the Department of Basic Education is of a South Africa in which all our people have access to lifelong learning and education and training, which will, in turn, contribute towards improving the quality of life. Ultimately this will influence the building of a peaceful, prosperous and democratic South Africa. The emphasis is on excellence. Therefore maintaining high standards of performance and professionalism is a national imperative. However, this has not always been the case in terms of performance. For more than a decade we have witnessed dismal results in literacy and numeracy. This was accompanied by a low throughput rate. Despite the poor matric, literacy and numeracy results in South Africa as well as the low throughput rate, no teacher has been formally charged for poor performance in the last two decades. South Africa’s education budget is regarded as one of the highest in the developing world. Since 1993 the education budget has also grown substantially. South Africa’s education expenditure on education has grown from R30 billion in 1994/05 to R101 billion in 2007/08. Spending on education grew even further from R207 billion in 2012/13 to a projected R236 billion in 2014/15. Additional allocations of R18.8 billion over the medium term are accommodated, including equalisation of learner subsidies for no-fee schools and expanded access to grade R.6 Over the rest of the medium-term-expenditure framework (MTEF),7 spending on education, sport and culture will amount to R233 billion in 2013/14. The investment in education has not yet yielded the desired results and the outcome of education is not in keeping with the substantial input. This crisis in education is one of the major challenges facing Government, Administrators, educators, parents and children of today. According to Spaull,9 the South African government spends the equivalent of $1225 (R12440.26)10 per child on primary education, yet accomplishes less than the government of Kenya which spends only the equivalent of $258 (R2620.80)11 per child. Various reasons such as poverty, management, leadership, imbalances of the past, two unequal education systems, poor management, training and development, non-accountability, role of government and unions, have been identified for the poor state of our education system. However, what is noticeably absent and hardly mentioned in any of the position papers, is that not a single teacher has been held accountable and dismissed for incapacity for the poor performance in the education sector. Unfortunately, there is no record in any of the provincial education departments’ annual reports that a teacher has been dismissed or at least placed on a formal programme of incapacity for poor performance. Therefore, we have to ask the question: “Are we getting value for money?".
- Full Text:
- Date Issued: 2014
Audience observations of art, identity and schizophrenia : possibilities for identity movement
- Authors: Farquharson, Kirsten Leigh
- Date: 2014
- Subjects: Mental illness -- Social aspects , Stigma (Social psychology) , Identity (Psychology) , Schizophrenia -- Treatment , Art therapy -- Research , Art, South African -- 21st century -- Exhibitions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3223 , http://hdl.handle.net/10962/d1012992
- Description: This research situates itself in the study of stigma in mental illness. In particular, the aim is to explore the potential that art making and exhibiting has in reducing stigma for those with a diagnosis of schizophrenia. The research explores one aspect (the exhibition stage) of an "art as therapy" project. The exhibiting of one’s artwork aims to counter limiting "patient" identities by allowing those labelled as psychiatric patients to extend their self-identity to an alternative identity of the "artist". However, this idea only stands strong if the artwork created is not discriminated against as "naïve art" and is accepted or at least considered for acceptance as legitimate nonprofessional artwork. This research explores the ways in which art created by inpatients with a diagnosis of schizophrenia is received by the general art-viewing public at the National Arts Festival in Grahamstown, South Africa. The study uses a discourse analytic framework to analyse the interviews of members of the public who attended the art exhibition of patient artwork. It will examine the ways in which the public construct the artworks and how they position the makers of this art across a continuum, from patient to artist. The results of this thesis have implications for rehabilitation practices for people with a diagnosis of schizophrenia particularly with regard to opportunities to "perform" alternative identities in public spaces.
- Full Text:
- Date Issued: 2014
- Authors: Farquharson, Kirsten Leigh
- Date: 2014
- Subjects: Mental illness -- Social aspects , Stigma (Social psychology) , Identity (Psychology) , Schizophrenia -- Treatment , Art therapy -- Research , Art, South African -- 21st century -- Exhibitions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3223 , http://hdl.handle.net/10962/d1012992
- Description: This research situates itself in the study of stigma in mental illness. In particular, the aim is to explore the potential that art making and exhibiting has in reducing stigma for those with a diagnosis of schizophrenia. The research explores one aspect (the exhibition stage) of an "art as therapy" project. The exhibiting of one’s artwork aims to counter limiting "patient" identities by allowing those labelled as psychiatric patients to extend their self-identity to an alternative identity of the "artist". However, this idea only stands strong if the artwork created is not discriminated against as "naïve art" and is accepted or at least considered for acceptance as legitimate nonprofessional artwork. This research explores the ways in which art created by inpatients with a diagnosis of schizophrenia is received by the general art-viewing public at the National Arts Festival in Grahamstown, South Africa. The study uses a discourse analytic framework to analyse the interviews of members of the public who attended the art exhibition of patient artwork. It will examine the ways in which the public construct the artworks and how they position the makers of this art across a continuum, from patient to artist. The results of this thesis have implications for rehabilitation practices for people with a diagnosis of schizophrenia particularly with regard to opportunities to "perform" alternative identities in public spaces.
- Full Text:
- Date Issued: 2014
Establishing a formulation design space for a generic clobetasol 17- propionate cream using the principles of quality by design
- Fauzee, Ayeshah Fateemah Beebee
- Authors: Fauzee, Ayeshah Fateemah Beebee
- Date: 2014
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:20983 , http://hdl.handle.net/10962/5868
- Description: The pharmaceutical industry is global, is highly regulated and is able to achieve reasonable product quality but at high cost with maximum effort. Numerous challenges face the pharmaceutical industry and include a shrinking research pipeline, less innovation, outsourcing, investments, increasing research and development costs, long approval times, growth of the generic industry, failure to understand or analyze manufacturing failure and wastage as high at fifty percent for some pharmaceutical products. An efficient and flexible pharmaceutical sector should be able to consistently produce high quality pharmaceutical products at a reduced cost with minimal waste. As a result, Food and Drug Administration (FDA) and other agencies such as the International Conference on Harmonization (ICH) have embraced a “Quality by Design” (QbD) paradigm and this has become the “desired state” so as to shift manufacturing from being empirical to a science, engineering, and risk based approach. QbD is a systematic approach for the development of high quality pharmaceutical dosage forms that begins with predefined objectives based on the premise that quality must be built into and not tested into a product. QbD together with the establishment of a design space for dosage forms is a fairly new concept and there is limited published data on QbD concepts that report the entire process of identifying Critical Quality Attributes (CQA), design of a formulation and manufacturing process to meet product CQA, understanding the impact of material attributes and process parameters on product CQA, identification and controlling sources of variability in materials and processes that affect the CQA of a product and finally establishing, evaluating and testing a design space using both in vitro and in vivo approaches to assure that a product of consistent quality can always be produced. The objective of these studies was to implement a QbD approach to establish a design space for the development and manufacture of a safe, effective, stable generic formulation containing 0.05% w/w clobetasol 17-propionate (CP) that had similar in vitro and in vivo characteristics to an innovator product, Dermovate® (Sekpharma® Pty Ltd, Sandton, Gauteng, RSA). Such a product would pose a minimal risk of failure when treating severe skin disorders such as seborrhoeic dermatitis, extreme photodermatitis and/or severe psoriasis in HIV/AIDS patients in Southern Africa.
- Full Text:
- Date Issued: 2014
- Authors: Fauzee, Ayeshah Fateemah Beebee
- Date: 2014
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:20983 , http://hdl.handle.net/10962/5868
- Description: The pharmaceutical industry is global, is highly regulated and is able to achieve reasonable product quality but at high cost with maximum effort. Numerous challenges face the pharmaceutical industry and include a shrinking research pipeline, less innovation, outsourcing, investments, increasing research and development costs, long approval times, growth of the generic industry, failure to understand or analyze manufacturing failure and wastage as high at fifty percent for some pharmaceutical products. An efficient and flexible pharmaceutical sector should be able to consistently produce high quality pharmaceutical products at a reduced cost with minimal waste. As a result, Food and Drug Administration (FDA) and other agencies such as the International Conference on Harmonization (ICH) have embraced a “Quality by Design” (QbD) paradigm and this has become the “desired state” so as to shift manufacturing from being empirical to a science, engineering, and risk based approach. QbD is a systematic approach for the development of high quality pharmaceutical dosage forms that begins with predefined objectives based on the premise that quality must be built into and not tested into a product. QbD together with the establishment of a design space for dosage forms is a fairly new concept and there is limited published data on QbD concepts that report the entire process of identifying Critical Quality Attributes (CQA), design of a formulation and manufacturing process to meet product CQA, understanding the impact of material attributes and process parameters on product CQA, identification and controlling sources of variability in materials and processes that affect the CQA of a product and finally establishing, evaluating and testing a design space using both in vitro and in vivo approaches to assure that a product of consistent quality can always be produced. The objective of these studies was to implement a QbD approach to establish a design space for the development and manufacture of a safe, effective, stable generic formulation containing 0.05% w/w clobetasol 17-propionate (CP) that had similar in vitro and in vivo characteristics to an innovator product, Dermovate® (Sekpharma® Pty Ltd, Sandton, Gauteng, RSA). Such a product would pose a minimal risk of failure when treating severe skin disorders such as seborrhoeic dermatitis, extreme photodermatitis and/or severe psoriasis in HIV/AIDS patients in Southern Africa.
- Full Text:
- Date Issued: 2014