A critical study of voice teaching method, with specific reference to solo singing, choral singing and vocal health for the teenage singer
- Authors: Olivier, Madelie Charlotte
- Date: 2012
- Subjects: Singing -- Instruction and study , Voice culture -- Exercises , Singing -- Methods
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8523 , http://hdl.handle.net/10948/d1019926
- Description: This dissertation presents a critical study of voice teaching method as this pertains to the high school learner studying voice within the South African educational environment, with learning outcomes determined for subject music within the GET (General Education and Training) and FET (Further Education and Training) bands of the Department of Basic Education at each school grade level, as well as by external examining bodies such as Unisa (University of South Africa), Trinity Guildhall and ABRSM (Amalgamated Board of the Royal Schools of Music). Emphasis is placed on the methodological principles applicable in the case of the Western classical music solo vocal repertoire, but reference is also made to the applicability of this method in other vocal genres and, in particular, in the case of choral music participation. Special attention is given to the subject of the vocal health of the developing teenage voice, which includes an overview of vocal disorders and suggestions for rehabilitation and remedial programmes where necessary. Triangulation of research results is achieved in this study through inclusion of: - A thorough survey of selected pertinent bibliographic sources - Description of and engagement with the researcher’s own numerous phenomenological encounters in this field - Interviews conducted in Port Elizabeth with Jill Nock, voice teacher, on the subject of voice teaching method, and with John Black, Ear, Nose and Throat Specialist, on the subject of vocal health. The researcher concludes that there is a need for continued education and training of music educators in the South African high school environment, many of whom are not trained voice specialists, in order to cater for the growing number of high school music learners who choose to specialise in voice. Although educator networking can go a long way towards creating an informal support system to address this need, it is ultimately the responsibility of the Department of Basic Education to address this in a formal and all-encompassing fashion.
- Full Text:
- Date Issued: 2012
- Authors: Olivier, Madelie Charlotte
- Date: 2012
- Subjects: Singing -- Instruction and study , Voice culture -- Exercises , Singing -- Methods
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:8523 , http://hdl.handle.net/10948/d1019926
- Description: This dissertation presents a critical study of voice teaching method as this pertains to the high school learner studying voice within the South African educational environment, with learning outcomes determined for subject music within the GET (General Education and Training) and FET (Further Education and Training) bands of the Department of Basic Education at each school grade level, as well as by external examining bodies such as Unisa (University of South Africa), Trinity Guildhall and ABRSM (Amalgamated Board of the Royal Schools of Music). Emphasis is placed on the methodological principles applicable in the case of the Western classical music solo vocal repertoire, but reference is also made to the applicability of this method in other vocal genres and, in particular, in the case of choral music participation. Special attention is given to the subject of the vocal health of the developing teenage voice, which includes an overview of vocal disorders and suggestions for rehabilitation and remedial programmes where necessary. Triangulation of research results is achieved in this study through inclusion of: - A thorough survey of selected pertinent bibliographic sources - Description of and engagement with the researcher’s own numerous phenomenological encounters in this field - Interviews conducted in Port Elizabeth with Jill Nock, voice teacher, on the subject of voice teaching method, and with John Black, Ear, Nose and Throat Specialist, on the subject of vocal health. The researcher concludes that there is a need for continued education and training of music educators in the South African high school environment, many of whom are not trained voice specialists, in order to cater for the growing number of high school music learners who choose to specialise in voice. Although educator networking can go a long way towards creating an informal support system to address this need, it is ultimately the responsibility of the Department of Basic Education to address this in a formal and all-encompassing fashion.
- Full Text:
- Date Issued: 2012
A cross-sectional study to ascertain the prognostic factors and symptoms associated with cryptococcal meningitis cases treated at the East London Hospital complex
- Authors: Okorie, Ikechukwu Obinna
- Date: 2012
- Subjects: Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11782 , http://hdl.handle.net/10353/d1016194 , Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Description: The focus of this study is to identify the potential prognostic factors and symptoms that are associated with Cryptococcal Meningitis and to establish a statistical model for the prediction of outcomes (survival and mortality) among in-hospital patients. Materials and Method: The hospital admission books in the medical wards and pharmacy of the East London Hospital Complex were searched to identify the folder numbers of all the patients that were admitted, diagnosed and or treated for Cryptococcal Meningitis at the hospital between the 1st of January 2009 and the 31st of August 2012. 237 folders out of 519 folders reviewed had confirmed cases of Cryptococcal Meningitis. Data on patients’ demographics, In-hospital care, and Concurrent infection/health condition were collected and analysed in a cross-sectional study, using the univariable and multiple logistic regression. Analysis of data was done with SAS version 9.1.3 and NCSS version 2007 software. Results: In a multivariable logistic analysis of variables found to be significantly associated with Cryptococcal Meningitis in a univariable logistic regression, Being Conscious (i.e. a Glasgow Coma score of 15) (OR= 5.34,CI=2.85-9.99 p =<0.000); Having no history of TB infection (OR=28.91, CI= 3.68-226.89, p = <0.001); No Fits (OR = 2.59, CI= 1.18-5.68 p = 0.017); Being a non-smoker (OR =2.22,CI=1.13-4.34 p = 0.020); and Adhering to treatment instruction and guidelines (OR = 2.38, 1.15-4.89, p = 0.019) were the variables found to be significantly associated with the survival of a Cryptococcal Meningitis patient. The uninterrupted use of Amphotericin B (OR=3.04, CI=1.06-8.72, P=0.038) as a first line regimen was also found to be significantly associated with survival.On the other hand, being unconscious (i.e. Glasgow Coma score <15) (OR =5.34, CI=2.85-9.99, p = < 0.000), Currently having a TB infection (OR = 9.20, CI=2.77-30.57, p = < 0.000), Not adhering to treatment guidelines (OR=2.38, CI=1.15-4.89, p=0.019 ); Being a smoker (OR = 2.22, CI=1.13-4.34, p = 0.020) and having Fits (OR=2.59 CI=1.18-5.68 p=0.017 ) were found to be significantly associated with mortality. Headache (p= 0.505) was found not to be a significant predictor of survival contrary to the findings in many publications on Cryptococcal Meningitis. Owing to time constraint, testing data was not collected to validate the prognostic models. However, model diagnostics was done and the relevant statistics confirmed the goodness of fit and the predictive ability of the model Conclusion: It has been established in this study that certain baseline variables can be helpful in the prognosis of Cryptococcal Meningitis infection. It is therefore believed that these variables will help in improving the prognosis of the infection especially at the East London Hospital Complex. Though the statistical models will work well in predicting the outcome of Cryptococcal Meningitis infection for patients admitted at the East London Hospital Complex, adequate precaution must be exercised while attempting to apply it in other geographical areas.
- Full Text:
- Date Issued: 2012
- Authors: Okorie, Ikechukwu Obinna
- Date: 2012
- Subjects: Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc (Biostatistics and Epidemiology)
- Identifier: vital:11782 , http://hdl.handle.net/10353/d1016194 , Meningitis -- South Africa -- Eastern Cape , Tuberculosis -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape , Hospitals -- South Africa -- Eastern Cape
- Description: The focus of this study is to identify the potential prognostic factors and symptoms that are associated with Cryptococcal Meningitis and to establish a statistical model for the prediction of outcomes (survival and mortality) among in-hospital patients. Materials and Method: The hospital admission books in the medical wards and pharmacy of the East London Hospital Complex were searched to identify the folder numbers of all the patients that were admitted, diagnosed and or treated for Cryptococcal Meningitis at the hospital between the 1st of January 2009 and the 31st of August 2012. 237 folders out of 519 folders reviewed had confirmed cases of Cryptococcal Meningitis. Data on patients’ demographics, In-hospital care, and Concurrent infection/health condition were collected and analysed in a cross-sectional study, using the univariable and multiple logistic regression. Analysis of data was done with SAS version 9.1.3 and NCSS version 2007 software. Results: In a multivariable logistic analysis of variables found to be significantly associated with Cryptococcal Meningitis in a univariable logistic regression, Being Conscious (i.e. a Glasgow Coma score of 15) (OR= 5.34,CI=2.85-9.99 p =<0.000); Having no history of TB infection (OR=28.91, CI= 3.68-226.89, p = <0.001); No Fits (OR = 2.59, CI= 1.18-5.68 p = 0.017); Being a non-smoker (OR =2.22,CI=1.13-4.34 p = 0.020); and Adhering to treatment instruction and guidelines (OR = 2.38, 1.15-4.89, p = 0.019) were the variables found to be significantly associated with the survival of a Cryptococcal Meningitis patient. The uninterrupted use of Amphotericin B (OR=3.04, CI=1.06-8.72, P=0.038) as a first line regimen was also found to be significantly associated with survival.On the other hand, being unconscious (i.e. Glasgow Coma score <15) (OR =5.34, CI=2.85-9.99, p = < 0.000), Currently having a TB infection (OR = 9.20, CI=2.77-30.57, p = < 0.000), Not adhering to treatment guidelines (OR=2.38, CI=1.15-4.89, p=0.019 ); Being a smoker (OR = 2.22, CI=1.13-4.34, p = 0.020) and having Fits (OR=2.59 CI=1.18-5.68 p=0.017 ) were found to be significantly associated with mortality. Headache (p= 0.505) was found not to be a significant predictor of survival contrary to the findings in many publications on Cryptococcal Meningitis. Owing to time constraint, testing data was not collected to validate the prognostic models. However, model diagnostics was done and the relevant statistics confirmed the goodness of fit and the predictive ability of the model Conclusion: It has been established in this study that certain baseline variables can be helpful in the prognosis of Cryptococcal Meningitis infection. It is therefore believed that these variables will help in improving the prognosis of the infection especially at the East London Hospital Complex. Though the statistical models will work well in predicting the outcome of Cryptococcal Meningitis infection for patients admitted at the East London Hospital Complex, adequate precaution must be exercised while attempting to apply it in other geographical areas.
- Full Text:
- Date Issued: 2012
A data warehouse structure design methodology to support the efficient and effective analysis of online resource usage data
- Authors: Ferreira, Cornél
- Date: 2012
- Subjects: Data warehousing , Electronic information resources
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10486 , http://hdl.handle.net/10948/d1016072
- Description: The use of electronic services results in the generation of vast amounts of Online Resource Usage (ORU) data. ORU data typically consists of user login, printing and executed process information. The structure of this type of data restricts the ability of decision makers to effectively and efficiently analyse ORU data. A data warehouse (DW) structure is required which satisfies an organisation’s information requirements. In order to design a DW structure a methodology is needed to provide a design template according to acknowledged practices. The aim of this research was to primarily propose a methodology specifically for the design of a DW structure to support the efficient and effective analysis of ORU data. A variety of relevant DW structure design methodologies were investigated and a number of limitations were identified. These methodologies do not provide methodological support for metadata documentation, physical design and implementation. The most comprehensive methodology identified in the investigation was modified and the Adapted Triple-Driven DW Structure Design Methodology (ATDM) was proposed. The ATDM was successfully applied to the information and communication technology services (ICTS) department of the Nelson Mandela Metropolitan University as the case study for this research. The proposed ATDM consists of different phases which include a requirements analysis phase that was adapted from the identified comprehensive methodology. A physical design and an implementation phase were included in the ATDM. The ATDM was successfully applied to the ICTS case study as a proof of concept. The application of the ATDM to ICTS resulted in the generation and documentation of semantic and technical metadata which describes the DW structure derived from the application of the ATDM at a logical and physical level respectively. The implementation phase was applied using the Microsoft SQL Server integrated tool to obtain an implemented DW structure for ICTS that is described by technical metadata at an implementation level. This research has shown that the ATDM can be successfully applied to obtain an effective and efficient DW structure for analysing ORU data. The ATDM provides guidelines to develop a DW structure for ORU data and future research includes the generalisation of the ATDM to accommodate various domains and different data types.
- Full Text:
- Date Issued: 2012
- Authors: Ferreira, Cornél
- Date: 2012
- Subjects: Data warehousing , Electronic information resources
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10486 , http://hdl.handle.net/10948/d1016072
- Description: The use of electronic services results in the generation of vast amounts of Online Resource Usage (ORU) data. ORU data typically consists of user login, printing and executed process information. The structure of this type of data restricts the ability of decision makers to effectively and efficiently analyse ORU data. A data warehouse (DW) structure is required which satisfies an organisation’s information requirements. In order to design a DW structure a methodology is needed to provide a design template according to acknowledged practices. The aim of this research was to primarily propose a methodology specifically for the design of a DW structure to support the efficient and effective analysis of ORU data. A variety of relevant DW structure design methodologies were investigated and a number of limitations were identified. These methodologies do not provide methodological support for metadata documentation, physical design and implementation. The most comprehensive methodology identified in the investigation was modified and the Adapted Triple-Driven DW Structure Design Methodology (ATDM) was proposed. The ATDM was successfully applied to the information and communication technology services (ICTS) department of the Nelson Mandela Metropolitan University as the case study for this research. The proposed ATDM consists of different phases which include a requirements analysis phase that was adapted from the identified comprehensive methodology. A physical design and an implementation phase were included in the ATDM. The ATDM was successfully applied to the ICTS case study as a proof of concept. The application of the ATDM to ICTS resulted in the generation and documentation of semantic and technical metadata which describes the DW structure derived from the application of the ATDM at a logical and physical level respectively. The implementation phase was applied using the Microsoft SQL Server integrated tool to obtain an implemented DW structure for ICTS that is described by technical metadata at an implementation level. This research has shown that the ATDM can be successfully applied to obtain an effective and efficient DW structure for analysing ORU data. The ATDM provides guidelines to develop a DW structure for ORU data and future research includes the generalisation of the ATDM to accommodate various domains and different data types.
- Full Text:
- Date Issued: 2012
A framework for information security governance in SMMEs
- Authors: Coertze, Jacques Jacobus
- Date: 2012
- Subjects: Business -- Data processing -- Security measures , Management information systems -- Security measures , Computer networks -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9810 , http://hdl.handle.net/10948/d1014083
- Description: It has been found that many small, medium and micro-sized enterprises (SMMEs) do not comply with sound information security governance principles, specifically the principles involved in drafting information security policies and monitoring compliance, mainly as a result of restricted resources and expertise. Research suggests that this problem occurs worldwide and that the impact it has on SMMEs is great. The problem is further compounded by the fact that, in our modern-day information technology environment, many larger organisations are providing SMMEs with access to their networks. This results not only in SMMEs being exposed to security risks, but the larger organisations as well. In previous research an information security management framework and toolbox was developed to assist SMMEs in drafting information security policies. Although this research was of some help to SMMEs, further research has shown that an even greater problem exists with the governance of information security as a result of the advancements that have been identified in information security literature. The aim of this dissertation is therefore to establish an information security governance framework that requires minimal effort and little expertise to alleviate governance problems. It is believed that such a framework would be useful for SMMEs and would result in the improved implementation of information security governance.
- Full Text:
- Date Issued: 2012
- Authors: Coertze, Jacques Jacobus
- Date: 2012
- Subjects: Business -- Data processing -- Security measures , Management information systems -- Security measures , Computer networks -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9810 , http://hdl.handle.net/10948/d1014083
- Description: It has been found that many small, medium and micro-sized enterprises (SMMEs) do not comply with sound information security governance principles, specifically the principles involved in drafting information security policies and monitoring compliance, mainly as a result of restricted resources and expertise. Research suggests that this problem occurs worldwide and that the impact it has on SMMEs is great. The problem is further compounded by the fact that, in our modern-day information technology environment, many larger organisations are providing SMMEs with access to their networks. This results not only in SMMEs being exposed to security risks, but the larger organisations as well. In previous research an information security management framework and toolbox was developed to assist SMMEs in drafting information security policies. Although this research was of some help to SMMEs, further research has shown that an even greater problem exists with the governance of information security as a result of the advancements that have been identified in information security literature. The aim of this dissertation is therefore to establish an information security governance framework that requires minimal effort and little expertise to alleviate governance problems. It is believed that such a framework would be useful for SMMEs and would result in the improved implementation of information security governance.
- Full Text:
- Date Issued: 2012
A framework for parental control of mobile devices in South Africa
- Authors: Marais, Jacques
- Date: 2012
- Subjects: Cell phones -- Social aspects -- South Africa , Digital communications -- Social aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9759 , http://hdl.handle.net/10948/d1008404 , Cell phones -- Social aspects -- South Africa , Digital communications -- Social aspects -- South Africa
- Description: Future generations are built on the children of today. Thus, children's well- being and safety is of paramount importance. Children are making use of mobile devices, such as smart phones, to gain access to the Internet and other data driven mobile services. Children and parents alike are unaware of the risks they are exposed to when accessing such services. A clear lack of parental control over or awareness of this mobile use has been identified in South Africa. Without adequate awareness and successful use of a comprehensive mobile parental control solution, South African children may be at risk. This risk may include exposure to potentially harmful content and/or individuals. This dissertation presents a framework that supports the attainment of a comprehensive mobile parental control solution based on sound research.
- Full Text:
- Date Issued: 2012
- Authors: Marais, Jacques
- Date: 2012
- Subjects: Cell phones -- Social aspects -- South Africa , Digital communications -- Social aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9759 , http://hdl.handle.net/10948/d1008404 , Cell phones -- Social aspects -- South Africa , Digital communications -- Social aspects -- South Africa
- Description: Future generations are built on the children of today. Thus, children's well- being and safety is of paramount importance. Children are making use of mobile devices, such as smart phones, to gain access to the Internet and other data driven mobile services. Children and parents alike are unaware of the risks they are exposed to when accessing such services. A clear lack of parental control over or awareness of this mobile use has been identified in South Africa. Without adequate awareness and successful use of a comprehensive mobile parental control solution, South African children may be at risk. This risk may include exposure to potentially harmful content and/or individuals. This dissertation presents a framework that supports the attainment of a comprehensive mobile parental control solution based on sound research.
- Full Text:
- Date Issued: 2012
A framework for personal health records in online social networking
- Van der Westhuizen, Eldridge Werner
- Authors: Van der Westhuizen, Eldridge Werner
- Date: 2012
- Subjects: Medical care -- Data processing , Medical records -- Access control , Medical informatics , Information storage and retrieval systems -- Medicine
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9804 , http://hdl.handle.net/10948/d1012382 , Medical care -- Data processing , Medical records -- Access control , Medical informatics , Information storage and retrieval systems -- Medicine
- Description: Since the early 20th century, the view has developed that high quality health care can be delivered only when all the pertinent data about the health of a patient is available to the clinician. Various types of health records have emerged to serve the needs of healthcare providers and more recently, patients or consumers. These health records include, but are not limited to, Personal Health Records, Electronic Heath Records, Electronic Medical Records and Payer-Based Health Records. Payer-Based Health Records emerged to serve the needs of medical aids or health care plans. Electronic Medical Records and Electronic Health Records were targeted at the healthcare provider market, whereas a gap developed in the patient market. Personal Health Records were developed to address the patient market, but adoption was slow at first. The success of online social networking reignited the flame that Personal Health Records needed and online consumer-based Personal Health Records were developed. Despite all the various types of health records, there still seems to be a lack of meaningful use of personal health records in modern society. The purpose of this dissertation is to propose a framework for Personal Health Records in online social networking, to address the issue of a lack of a central, accessible repository for health records. In order for a Personal Health Record to serve this need it has to be of meaningful use. The capability of a PHR to be of meaningful use is core to this research. In order to determine whether a Personal Health Record is of meaningful use, a tool is developed to evaluate Personal Health Records. This evaluation tool takes into account all the attributes that a Personal Health Record which is of meaningful use should comprise of. Suitable ratings are allocated to enable measuring of each attribute. A model is compiled to facilitate the selection of six Personal Health Records to be evaluated. One of these six Personal Health Records acts as a pilot site to test the evaluation tool in order to determine the tool’s utility and effect improvements. The other five Personal Health Records are then evaluated to measure their adherence to the attributes of meaningful use. These findings, together with a literature study on the various types of health records and the evaluation tool, inform the building blocks used to present the framework. It is hoped that the framework for Personal Health Records in online social networking proposed in this research, may be of benefit to provide clear guidance for the achievement of a central or integrated, accessible repository for health records through the meaningful use of Personal Health Records.
- Full Text:
- Date Issued: 2012
- Authors: Van der Westhuizen, Eldridge Werner
- Date: 2012
- Subjects: Medical care -- Data processing , Medical records -- Access control , Medical informatics , Information storage and retrieval systems -- Medicine
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9804 , http://hdl.handle.net/10948/d1012382 , Medical care -- Data processing , Medical records -- Access control , Medical informatics , Information storage and retrieval systems -- Medicine
- Description: Since the early 20th century, the view has developed that high quality health care can be delivered only when all the pertinent data about the health of a patient is available to the clinician. Various types of health records have emerged to serve the needs of healthcare providers and more recently, patients or consumers. These health records include, but are not limited to, Personal Health Records, Electronic Heath Records, Electronic Medical Records and Payer-Based Health Records. Payer-Based Health Records emerged to serve the needs of medical aids or health care plans. Electronic Medical Records and Electronic Health Records were targeted at the healthcare provider market, whereas a gap developed in the patient market. Personal Health Records were developed to address the patient market, but adoption was slow at first. The success of online social networking reignited the flame that Personal Health Records needed and online consumer-based Personal Health Records were developed. Despite all the various types of health records, there still seems to be a lack of meaningful use of personal health records in modern society. The purpose of this dissertation is to propose a framework for Personal Health Records in online social networking, to address the issue of a lack of a central, accessible repository for health records. In order for a Personal Health Record to serve this need it has to be of meaningful use. The capability of a PHR to be of meaningful use is core to this research. In order to determine whether a Personal Health Record is of meaningful use, a tool is developed to evaluate Personal Health Records. This evaluation tool takes into account all the attributes that a Personal Health Record which is of meaningful use should comprise of. Suitable ratings are allocated to enable measuring of each attribute. A model is compiled to facilitate the selection of six Personal Health Records to be evaluated. One of these six Personal Health Records acts as a pilot site to test the evaluation tool in order to determine the tool’s utility and effect improvements. The other five Personal Health Records are then evaluated to measure their adherence to the attributes of meaningful use. These findings, together with a literature study on the various types of health records and the evaluation tool, inform the building blocks used to present the framework. It is hoped that the framework for Personal Health Records in online social networking proposed in this research, may be of benefit to provide clear guidance for the achievement of a central or integrated, accessible repository for health records through the meaningful use of Personal Health Records.
- Full Text:
- Date Issued: 2012
A framework for the development and measurement of agile enterprise architecture
- Authors: Mthupha, Bokang
- Date: 2012
- Subjects: Management information systems -- Research Industrial management -- Technological innovations -- Research Industrial organization -- Technological innovations -- Research System design
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1147 , http://hdl.handle.net/10962/d1002777
- Description: Enterprise architecture is the high-level design of the entire business, facilitated by enterprise architects. "Agile enterprise architecture" is the term used in enterprise architecture to describe an architecture that caters for future unknowns, enabling change to occur rapidly without undue resource utilization, yet in a controlled manner and with minimal adverse impact. Some enterprise architects still use outdated, rigid approaches to enterprise architecture which are incompatible with today‟s business environment. In addition, there is limited research into methods that can be applied to measure the agility of enterprise architecture. The current environment is such that there is a need for a more agile approach to developing and measuring enterprise architecture. This work will lead to the creation of a Framework for The Development and Measurement of Agile Enterprise Architecture. In support of the main goal of the development of the framework, a literature review will be conducted focusing on the necessary sub-goals of the research. The first sub-goal of the literature review is to develop a comprehensive definition for enterprise architecture (referred to as EA), as well as discover how it is currently practiced. Thereafter, the literature review will investigate a comprehensive definition for agility and research why it is emerging as a critical topic. The next chapter of the literature review will research how agility fits within the context of EA, uncovering a comprehensive definition for agile EA and the best practices in agile EA development. The final chapter of the literature review will investigate suitable measurement techniques that can be used to assess the level of agility of EA. On completion of the literature review, a preliminary framework will be created using the most important contributions from the literature. An empirical study will be conducted to explore the definitions for EA, agility, agile EA, the methods to measure the agility of EA and the concepts for the development of agile EA summarised in the preliminary framework. Data analysis follows an interpretive and qualitative approach based on four case studies through interviews with systems experts in four South African organizations in one province. Each interviewee was interviewed once. The initial interview with a Principal Consultant on Enterprise Strategy Consulting at organisation # 1 formed the basis of an exploratory study; the results of which were used to refine the research instrument and preliminary framework. Thereafter, a more rigorous empirical study focused on interviews with the Chief Architect, Senior Manager in Advisory Services and an Enterprise Architect at organizations 2, 3 and 4 respectively was conducted. The research follows an inductive approach to capture the interpretive experiences of participants and develop theoretical propositions from them. Following the exploratory pilot study it became necessary to make changes to the preliminary framework and initial survey instrument created. Thereafter, the empirical study consisting of the remaining three cases was conducted to test the important aspects of the framework and literature definitions. The analysis of the results of the empirical study prompted further changes to the theoretical framework and definitions created. The interviews conducted with each of the organizations confirmed the factors for agile EA development as well as the effectiveness of the definitions created in the literature review. The research uncovered that the need for a more agile approach to developing EA and a way to measure the level of agility of EA has become more and more significant in organizations. This begins with a better understanding of EA, agility, how agility fits within the context of EA, as well as appropriate methods to measure agility.
- Full Text:
- Date Issued: 2012
- Authors: Mthupha, Bokang
- Date: 2012
- Subjects: Management information systems -- Research Industrial management -- Technological innovations -- Research Industrial organization -- Technological innovations -- Research System design
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1147 , http://hdl.handle.net/10962/d1002777
- Description: Enterprise architecture is the high-level design of the entire business, facilitated by enterprise architects. "Agile enterprise architecture" is the term used in enterprise architecture to describe an architecture that caters for future unknowns, enabling change to occur rapidly without undue resource utilization, yet in a controlled manner and with minimal adverse impact. Some enterprise architects still use outdated, rigid approaches to enterprise architecture which are incompatible with today‟s business environment. In addition, there is limited research into methods that can be applied to measure the agility of enterprise architecture. The current environment is such that there is a need for a more agile approach to developing and measuring enterprise architecture. This work will lead to the creation of a Framework for The Development and Measurement of Agile Enterprise Architecture. In support of the main goal of the development of the framework, a literature review will be conducted focusing on the necessary sub-goals of the research. The first sub-goal of the literature review is to develop a comprehensive definition for enterprise architecture (referred to as EA), as well as discover how it is currently practiced. Thereafter, the literature review will investigate a comprehensive definition for agility and research why it is emerging as a critical topic. The next chapter of the literature review will research how agility fits within the context of EA, uncovering a comprehensive definition for agile EA and the best practices in agile EA development. The final chapter of the literature review will investigate suitable measurement techniques that can be used to assess the level of agility of EA. On completion of the literature review, a preliminary framework will be created using the most important contributions from the literature. An empirical study will be conducted to explore the definitions for EA, agility, agile EA, the methods to measure the agility of EA and the concepts for the development of agile EA summarised in the preliminary framework. Data analysis follows an interpretive and qualitative approach based on four case studies through interviews with systems experts in four South African organizations in one province. Each interviewee was interviewed once. The initial interview with a Principal Consultant on Enterprise Strategy Consulting at organisation # 1 formed the basis of an exploratory study; the results of which were used to refine the research instrument and preliminary framework. Thereafter, a more rigorous empirical study focused on interviews with the Chief Architect, Senior Manager in Advisory Services and an Enterprise Architect at organizations 2, 3 and 4 respectively was conducted. The research follows an inductive approach to capture the interpretive experiences of participants and develop theoretical propositions from them. Following the exploratory pilot study it became necessary to make changes to the preliminary framework and initial survey instrument created. Thereafter, the empirical study consisting of the remaining three cases was conducted to test the important aspects of the framework and literature definitions. The analysis of the results of the empirical study prompted further changes to the theoretical framework and definitions created. The interviews conducted with each of the organizations confirmed the factors for agile EA development as well as the effectiveness of the definitions created in the literature review. The research uncovered that the need for a more agile approach to developing EA and a way to measure the level of agility of EA has become more and more significant in organizations. This begins with a better understanding of EA, agility, how agility fits within the context of EA, as well as appropriate methods to measure agility.
- Full Text:
- Date Issued: 2012
A framework for the governance of social media in the workplace
- Authors: Scharneck, Justin William
- Date: 2012
- Subjects: Social media -- Law and legislation , Social media -- Economic aspects , Work environment , Online social networks
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8861 , http://hdl.handle.net/10948/d1020180
- Description: Social media is fast becoming an ever-increasingly significant part of the world of business and a phenomenon which cannot be evaded. The advent of social media in the workplace compels organisations to acclimatise to the transformation emanating from employees‟ adoption of these technologies (Hanaki & Casella, 2008). Approximately seventy percent of organisations do not have a social media governance framework in place (Fink et al., 2011). Social media governance in organisations is very disjointed; companies have varying stances as to social media strategy, the risks, benefits and business use of social media (Thompson et al., 2011). The growth of social media and its use in the business environment will see a more standardised approach to social media governance (Thompson et al., 2011). Being at the forefront of technology development in Africa, and in certain areas, globally (Government of the Republic of South Africa, 2012), places added emphasis on IT organisations in South Africa to set the standard as it relates to social media governance. The diversity and depth of the human and technology resources within these organisations, creates an environment conducive to establishing and pioneering sound social media governance structures. The treatise consists of a study on the governance of social media and the successive development of two frameworks; an integrated framework for the governance of social media in the workplace, as well as integrated framework for a social media policy within an IT organisation. These frameworks are empirically evaluated amongst employees, within the context of Information Technology (IT) organisations, in South Africa. Several recommendations are proposed by the author in relation to the adoption of the proposed frameworks.
- Full Text:
- Date Issued: 2012
- Authors: Scharneck, Justin William
- Date: 2012
- Subjects: Social media -- Law and legislation , Social media -- Economic aspects , Work environment , Online social networks
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8861 , http://hdl.handle.net/10948/d1020180
- Description: Social media is fast becoming an ever-increasingly significant part of the world of business and a phenomenon which cannot be evaded. The advent of social media in the workplace compels organisations to acclimatise to the transformation emanating from employees‟ adoption of these technologies (Hanaki & Casella, 2008). Approximately seventy percent of organisations do not have a social media governance framework in place (Fink et al., 2011). Social media governance in organisations is very disjointed; companies have varying stances as to social media strategy, the risks, benefits and business use of social media (Thompson et al., 2011). The growth of social media and its use in the business environment will see a more standardised approach to social media governance (Thompson et al., 2011). Being at the forefront of technology development in Africa, and in certain areas, globally (Government of the Republic of South Africa, 2012), places added emphasis on IT organisations in South Africa to set the standard as it relates to social media governance. The diversity and depth of the human and technology resources within these organisations, creates an environment conducive to establishing and pioneering sound social media governance structures. The treatise consists of a study on the governance of social media and the successive development of two frameworks; an integrated framework for the governance of social media in the workplace, as well as integrated framework for a social media policy within an IT organisation. These frameworks are empirically evaluated amongst employees, within the context of Information Technology (IT) organisations, in South Africa. Several recommendations are proposed by the author in relation to the adoption of the proposed frameworks.
- Full Text:
- Date Issued: 2012
A Framework for the Static Analysis of Malware focusing on Signal Processing Techniques
- Zeisberger, Sascha, Irwin, Barry V W
- Authors: Zeisberger, Sascha , Irwin, Barry V W
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427914 , vital:72473 , https://www.researchgate.net/profile/Barry-Ir-win/publication/327622833_A_Framework_for_the_Static_Analysis_of_Mal-ware_focusing_on_Signal_Processing_Techniques/links/5b9a1396a6fdcc59bf8dfc87/A-Framework-for-the-Static-Analysis-of-Malware-focusing-on-Signal-Processing-Techniques.pdf
- Description: The information gathered through conventional static analysis of malicious binaries has become increasingly limited. This is due to the rate at which new malware is being created as well as the increasingly complex methods employed to obfuscating these binaries. This paper discusses the development of a framework to analyse malware using signal processing techniques, the initial iteration of which focuses on common audio processing techniques such as Fourier transforms. The aim of this research is to identify characteristics of malware and the encryption methods used to obfuscate malware. This is achieved through the analysis of their binary structure, potentially providing an additional metric for autonomously fingerprinting malware.
- Full Text:
- Date Issued: 2012
- Authors: Zeisberger, Sascha , Irwin, Barry V W
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/427914 , vital:72473 , https://www.researchgate.net/profile/Barry-Ir-win/publication/327622833_A_Framework_for_the_Static_Analysis_of_Mal-ware_focusing_on_Signal_Processing_Techniques/links/5b9a1396a6fdcc59bf8dfc87/A-Framework-for-the-Static-Analysis-of-Malware-focusing-on-Signal-Processing-Techniques.pdf
- Description: The information gathered through conventional static analysis of malicious binaries has become increasingly limited. This is due to the rate at which new malware is being created as well as the increasingly complex methods employed to obfuscating these binaries. This paper discusses the development of a framework to analyse malware using signal processing techniques, the initial iteration of which focuses on common audio processing techniques such as Fourier transforms. The aim of this research is to identify characteristics of malware and the encryption methods used to obfuscate malware. This is achieved through the analysis of their binary structure, potentially providing an additional metric for autonomously fingerprinting malware.
- Full Text:
- Date Issued: 2012
A framework to guide development through ICT in rural areas in South Africa
- Mamba, Malungelo Siphiwosami Njinga
- Authors: Mamba, Malungelo Siphiwosami Njinga
- Date: 2012
- Subjects: Information technology -- Economic aspects -- South Africa , Telecommunication -- South Africa , Information services industry -- South Africa , Rural development -- South Africa , Information services -- Government policy -- South Africa , Communication policy -- South Africa , Communication planning -- South Africa
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11137 , http://hdl.handle.net/10353/d1007024 , Information technology -- Economic aspects -- South Africa , Telecommunication -- South Africa , Information services industry -- South Africa , Rural development -- South Africa , Information services -- Government policy -- South Africa , Communication policy -- South Africa , Communication planning -- South Africa
- Description: Information and Communication Technology (ICT) is widely regarded as a key tool for bringing about development to people who live in underserved areas. Technologies such as mobile phones and Wi-Fi are seen as advantageous because they can be made available to poor places without the cost of building extensive physical infrastructure. However, researchers argue that ICTs have failed to live up to their potential in the context of development. Researchers point out developing countries lack frameworks to guide them through the implementation of ICTs in this context. The objective of this study is to come up with a framework that can be used in rural areas in South Africa to implement ICT projects. The researcher interviewed individuals who have been directly involved in an ICT initiative in a rural setting in the Eastern Cape Province to learn from their experiences. The researcher also studied publications that have been produced from these initiatives in order to gain a richer understanding. The findings of the study show that participants share similar views about how ICT projects should be approached and implemented in rural areas in South Africa. The views are grouped according to similarity into themes and discussed in detail in the study. From these themes a framework that can help implement ICT projects in rural areas is developed.
- Full Text:
- Date Issued: 2012
- Authors: Mamba, Malungelo Siphiwosami Njinga
- Date: 2012
- Subjects: Information technology -- Economic aspects -- South Africa , Telecommunication -- South Africa , Information services industry -- South Africa , Rural development -- South Africa , Information services -- Government policy -- South Africa , Communication policy -- South Africa , Communication planning -- South Africa
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11137 , http://hdl.handle.net/10353/d1007024 , Information technology -- Economic aspects -- South Africa , Telecommunication -- South Africa , Information services industry -- South Africa , Rural development -- South Africa , Information services -- Government policy -- South Africa , Communication policy -- South Africa , Communication planning -- South Africa
- Description: Information and Communication Technology (ICT) is widely regarded as a key tool for bringing about development to people who live in underserved areas. Technologies such as mobile phones and Wi-Fi are seen as advantageous because they can be made available to poor places without the cost of building extensive physical infrastructure. However, researchers argue that ICTs have failed to live up to their potential in the context of development. Researchers point out developing countries lack frameworks to guide them through the implementation of ICTs in this context. The objective of this study is to come up with a framework that can be used in rural areas in South Africa to implement ICT projects. The researcher interviewed individuals who have been directly involved in an ICT initiative in a rural setting in the Eastern Cape Province to learn from their experiences. The researcher also studied publications that have been produced from these initiatives in order to gain a richer understanding. The findings of the study show that participants share similar views about how ICT projects should be approached and implemented in rural areas in South Africa. The views are grouped according to similarity into themes and discussed in detail in the study. From these themes a framework that can help implement ICT projects in rural areas is developed.
- Full Text:
- Date Issued: 2012
A framework to investigate risk management in commercial banks
- Authors: Fick, William
- Date: 2012
- Subjects: Banks and banking -- Risk management , Risk management , Asset-liability management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9288 , http://hdl.handle.net/10948/d1009429 , Banks and banking -- Risk management , Risk management , Asset-liability management
- Description: Businesses are continuously exposed to a changing business environment which may either exert positive or negative influences on profitability. The banking industry, in particular, is highly competitive and bank failures can have significant consequences for customers. Commercial banks, therefore, have a responsibility to protect their customers by implementing sound risk management strategies. In light of the recent financial crises (since 2007), risk management has once again become a popular topic of discussion since adequate risk management should have prevented or minimised the impact of the risks faced by failed banks. The primary objective of this study was to develop a framework that could be used by South African commercial banks to investigate risk management. Qualitative research was conducted in this regard. From this, findings and recommendations were derived in order to provide banks with a tool by which they could assess their exposure to risk. Various journals, websites, newspapers, bank reports and textbooks were consulted in support of the literature. The literature provided background information on the history and development of the risk management process. Considerable attention was given to the categories of risk that an adequate risk management framework should address. Furthermore, the current models used to manage risk in commercial bank were provided, as well as the specific reasons for bank failures. The main findings of this study were the identification of the most significant reasons for banking failures. These were identified as capital inadequacy, credit risk due to non-performing loans and a lack of banking supervision. In addition to these reasons, several other contributing principles were identified as important factors to be included in a risk management framework. A risk management framework was thus constructed in Table 5.1 based on the literature regarding global banking failures and the relevant conclusions made by the researcher.
- Full Text:
- Date Issued: 2012
- Authors: Fick, William
- Date: 2012
- Subjects: Banks and banking -- Risk management , Risk management , Asset-liability management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9288 , http://hdl.handle.net/10948/d1009429 , Banks and banking -- Risk management , Risk management , Asset-liability management
- Description: Businesses are continuously exposed to a changing business environment which may either exert positive or negative influences on profitability. The banking industry, in particular, is highly competitive and bank failures can have significant consequences for customers. Commercial banks, therefore, have a responsibility to protect their customers by implementing sound risk management strategies. In light of the recent financial crises (since 2007), risk management has once again become a popular topic of discussion since adequate risk management should have prevented or minimised the impact of the risks faced by failed banks. The primary objective of this study was to develop a framework that could be used by South African commercial banks to investigate risk management. Qualitative research was conducted in this regard. From this, findings and recommendations were derived in order to provide banks with a tool by which they could assess their exposure to risk. Various journals, websites, newspapers, bank reports and textbooks were consulted in support of the literature. The literature provided background information on the history and development of the risk management process. Considerable attention was given to the categories of risk that an adequate risk management framework should address. Furthermore, the current models used to manage risk in commercial bank were provided, as well as the specific reasons for bank failures. The main findings of this study were the identification of the most significant reasons for banking failures. These were identified as capital inadequacy, credit risk due to non-performing loans and a lack of banking supervision. In addition to these reasons, several other contributing principles were identified as important factors to be included in a risk management framework. A risk management framework was thus constructed in Table 5.1 based on the literature regarding global banking failures and the relevant conclusions made by the researcher.
- Full Text:
- Date Issued: 2012
A guide for using online social media and social networking activities for SMME's
- Authors: Morley, Charmaine Joan
- Date: 2012
- Subjects: Electronic commerce , Social media -- Economic aspects , Customer relations , Online social networks
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8873 , http://hdl/handle.net/10948/d1020350
- Description: Social media is playing an increasingly important role in people’s lives and is becoming a part of most organisations’ business models. Businesses cannot ignore this phenomenon due to the increasing influx of Generation Y employees in their businesses and the Generation Y consumers who are going to buy their products and services in the future. Social media is changing the way that marketing is being conducted, in a positive way. It is changing from businesses focusing on selling products or services to customers, to businesses building relationships with customers and adding value to their lives through their products and services. This phenomenon was the base for this study. The research problem was identified as follows: SMME business owners do not understand the importance and impact of social media on their businesses. Sub-problems were identified as: defining social media and networking, describing the importance of this, which strategies are currently being used in business, how it compares to traditional networking, how this is used in recruitment strategies and what are the disadvantages of social media and networking. The research problem and sub-problems were addressed in a literature study and an empirical study. The literature study included information on SMME businesses, their importance in our economy and how social media can help them. The empirical study was done using SMME’s registered with the George Business Chamber. A questionnaire was designed and distributed to the owners of the businesses by email. The answers were analysed and collated on a spreadsheet which were presented in graph and diagram format. Social media and networking are becoming an integral part of businesses especially small businesses. They specifically have an important role to play in creating economic wealth and creating employment. SMME’s are faced with a lot of challenges which make it difficult for them to become successful and sustainable. Social media can play a role in overcoming a lot of these challenges by helping SMME’s with marketing, customer engagement, relationship building, recruitment, and finding valuable information, experience and partners. Social media also has disadvantages which include: virus attacks, risk of confidential information leaking and so forth, but these can easily be managed by social media polices and rules. A bigger risk lies in the fact that if a business owner ignores the existence of social media, this can lead to conversations by consumers about this business being ignored and not responded to. Another big risk for SMME’s is the fact they are at a competitive disadvantage by ignoring this new technology. This was clear from the empirical results in this study which stated that 53 percent of the businesses surveyed, were aware their competitors are using social media. The empirical results indicated a very low use of social media activities among the SMME’s surveyed but showed potential as the SMME’s understood the importance of social media and were eager to implement strategies in their businesses. The reasons offered for not using social media included the fact that it was difficult to measure its worth in time and money, advice is needed from experts and so forth. Social media and networking are not quick or cheap methods for businesses to advertise and sell their products or services. They are tools to be used over time, in order to engage with customers and build relationships. Consumers and customers expect value for their money and if they find this from a business, they will gladly share it with others. On the other hand, if they do not find value for money it could have a negative impact on the business. SMME’s must not try to replace their current marketing strategy with social networking activities. They should integrate it slowly into their current business models and search for unique ways in which it could improve the relationship with their current customers and find new customers. It should help them to either showcase their existing value added products or services, or improve it if it is not worth selling. Small businesses now have the platform to compete.
- Full Text:
- Date Issued: 2012
- Authors: Morley, Charmaine Joan
- Date: 2012
- Subjects: Electronic commerce , Social media -- Economic aspects , Customer relations , Online social networks
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8873 , http://hdl/handle.net/10948/d1020350
- Description: Social media is playing an increasingly important role in people’s lives and is becoming a part of most organisations’ business models. Businesses cannot ignore this phenomenon due to the increasing influx of Generation Y employees in their businesses and the Generation Y consumers who are going to buy their products and services in the future. Social media is changing the way that marketing is being conducted, in a positive way. It is changing from businesses focusing on selling products or services to customers, to businesses building relationships with customers and adding value to their lives through their products and services. This phenomenon was the base for this study. The research problem was identified as follows: SMME business owners do not understand the importance and impact of social media on their businesses. Sub-problems were identified as: defining social media and networking, describing the importance of this, which strategies are currently being used in business, how it compares to traditional networking, how this is used in recruitment strategies and what are the disadvantages of social media and networking. The research problem and sub-problems were addressed in a literature study and an empirical study. The literature study included information on SMME businesses, their importance in our economy and how social media can help them. The empirical study was done using SMME’s registered with the George Business Chamber. A questionnaire was designed and distributed to the owners of the businesses by email. The answers were analysed and collated on a spreadsheet which were presented in graph and diagram format. Social media and networking are becoming an integral part of businesses especially small businesses. They specifically have an important role to play in creating economic wealth and creating employment. SMME’s are faced with a lot of challenges which make it difficult for them to become successful and sustainable. Social media can play a role in overcoming a lot of these challenges by helping SMME’s with marketing, customer engagement, relationship building, recruitment, and finding valuable information, experience and partners. Social media also has disadvantages which include: virus attacks, risk of confidential information leaking and so forth, but these can easily be managed by social media polices and rules. A bigger risk lies in the fact that if a business owner ignores the existence of social media, this can lead to conversations by consumers about this business being ignored and not responded to. Another big risk for SMME’s is the fact they are at a competitive disadvantage by ignoring this new technology. This was clear from the empirical results in this study which stated that 53 percent of the businesses surveyed, were aware their competitors are using social media. The empirical results indicated a very low use of social media activities among the SMME’s surveyed but showed potential as the SMME’s understood the importance of social media and were eager to implement strategies in their businesses. The reasons offered for not using social media included the fact that it was difficult to measure its worth in time and money, advice is needed from experts and so forth. Social media and networking are not quick or cheap methods for businesses to advertise and sell their products or services. They are tools to be used over time, in order to engage with customers and build relationships. Consumers and customers expect value for their money and if they find this from a business, they will gladly share it with others. On the other hand, if they do not find value for money it could have a negative impact on the business. SMME’s must not try to replace their current marketing strategy with social networking activities. They should integrate it slowly into their current business models and search for unique ways in which it could improve the relationship with their current customers and find new customers. It should help them to either showcase their existing value added products or services, or improve it if it is not worth selling. Small businesses now have the platform to compete.
- Full Text:
- Date Issued: 2012
A highly selective and sensitive pyridylazo-2-naphthol-poly (acrylic acid) functionalized electrospun nanofiber fluorescence “turn-off” chemosensory system for Ni 2+
- Adewuyi, Sheriff, Ondigo, Dezzline A, Zugle, Ruphino, Tshentu, Zenixole, Nyokong, Tebello, Torto, Nelson
- Authors: Adewuyi, Sheriff , Ondigo, Dezzline A , Zugle, Ruphino , Tshentu, Zenixole , Nyokong, Tebello , Torto, Nelson
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/246012 , vital:51428 , xlink:href="https://doi.org/10.1039/C2AY25182E"
- Description: A fluorescent nanofiber probe for the determination of Ni2+ was developed via the electrospinning of a covalently functionalized pyridylazo-2-naphthol-poly(acrylic acid) polymer. Fluorescent nanofibers with diameters in the range 230–800 nm were produced with uniformly dispersed fluorophores. The excitation and emission fluorescence were at wavelengths 479 and 557 nm respectively, thereby exhibiting a good Stokes' shift. This Ni2+ probe that employs fluorescence quenching in a solid receptor–fluorophore system exhibited a good correlation between the fluorescence intensity and nickel concentration up to 1.0 μg mL−1 based on the Stern–Volmer mechanism. The probe achieved a detection limit (3δ/S) of 0.07 ng mL−1 and a precision, calculated as a relative standard deviation (RSD) of more than 4% (n = 8). The concentration of Ni2+ in a certified reference material (SEP-3) was found to be 0.8986 μg mL−1, which is significantly comparable with the certified value of 0.8980 μg mL−1. The accuracy of the determinations, expressed as a relative error between the certified and the observed values of certified reference groundwater was ≤0.1%. The versatility of the nanofiber probe was demonstrated by affording simple, rapid and selective detection of Ni2+ in the presence of other competing metal ions by direct analysis, without employing any further sample handling steps.
- Full Text:
- Date Issued: 2012
- Authors: Adewuyi, Sheriff , Ondigo, Dezzline A , Zugle, Ruphino , Tshentu, Zenixole , Nyokong, Tebello , Torto, Nelson
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/246012 , vital:51428 , xlink:href="https://doi.org/10.1039/C2AY25182E"
- Description: A fluorescent nanofiber probe for the determination of Ni2+ was developed via the electrospinning of a covalently functionalized pyridylazo-2-naphthol-poly(acrylic acid) polymer. Fluorescent nanofibers with diameters in the range 230–800 nm were produced with uniformly dispersed fluorophores. The excitation and emission fluorescence were at wavelengths 479 and 557 nm respectively, thereby exhibiting a good Stokes' shift. This Ni2+ probe that employs fluorescence quenching in a solid receptor–fluorophore system exhibited a good correlation between the fluorescence intensity and nickel concentration up to 1.0 μg mL−1 based on the Stern–Volmer mechanism. The probe achieved a detection limit (3δ/S) of 0.07 ng mL−1 and a precision, calculated as a relative standard deviation (RSD) of more than 4% (n = 8). The concentration of Ni2+ in a certified reference material (SEP-3) was found to be 0.8986 μg mL−1, which is significantly comparable with the certified value of 0.8980 μg mL−1. The accuracy of the determinations, expressed as a relative error between the certified and the observed values of certified reference groundwater was ≤0.1%. The versatility of the nanofiber probe was demonstrated by affording simple, rapid and selective detection of Ni2+ in the presence of other competing metal ions by direct analysis, without employing any further sample handling steps.
- Full Text:
- Date Issued: 2012
A historical overview of the development of the trading stock provisions in the Income Tax Act
- Authors: Skotidas, Maria
- Date: 2012
- Subjects: Income tax , Stocks , Taxation
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8967 , http://hdl.handle.net/10948/d1020829
- Description: The aim of the treatise was to provide a clear understanding of the changes to the trading stock provisions in the Income Tax Act. Various sections of the Act were covered and case law was reviewed with relevance in relation to this research project in order to gain a deeper understanding of the development of the trading stock provisions, thus bringing together the tax legislation and the case law principles. Emphasis was placed on the development of the trading stock provisions. The conclusion from this was that some of the amendments were merely textual in nature whilst others were driven by case law. There were instances where cases did not give rise to amendments but simply reinforced existing provisions by providing guidance and clarity by way of the judges’ interpretations of those provisions. The amendments relating to the trading stock provisions in the Act and the judges’ interpretation of the applicable case law have resulted in a comprehensive understanding of the treatment of trading stock.
- Full Text:
- Date Issued: 2012
- Authors: Skotidas, Maria
- Date: 2012
- Subjects: Income tax , Stocks , Taxation
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8967 , http://hdl.handle.net/10948/d1020829
- Description: The aim of the treatise was to provide a clear understanding of the changes to the trading stock provisions in the Income Tax Act. Various sections of the Act were covered and case law was reviewed with relevance in relation to this research project in order to gain a deeper understanding of the development of the trading stock provisions, thus bringing together the tax legislation and the case law principles. Emphasis was placed on the development of the trading stock provisions. The conclusion from this was that some of the amendments were merely textual in nature whilst others were driven by case law. There were instances where cases did not give rise to amendments but simply reinforced existing provisions by providing guidance and clarity by way of the judges’ interpretations of those provisions. The amendments relating to the trading stock provisions in the Act and the judges’ interpretation of the applicable case law have resulted in a comprehensive understanding of the treatment of trading stock.
- Full Text:
- Date Issued: 2012
A lover’s shame
- Authors: Jones, Ward E
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275692 , vital:55071 , xlink:href="https://doi.org/10.1007/s10677-012-9356-5"
- Description: Shame is one of the more painful consequences of loving someone; my beloved’s doing something immoral can cause me to be ashamed of her. The guiding thought behind this paper is that explaining this phenomenon can tell us something about what it means to love. The phenomenon of beloved-induced shame has been largely neglected by philosophers working on shame, most of whom conceive of shame as being a reflexive attitude. Bennett Helm has recently suggested that in order to account for beloved-induced shame, we should deny the reflexivity of shame. After arguing that Helm’s account is inadequate, I proceed to develop an account of beloved-induced shame that rightly preserves its reflexivity. A familiar feature of love is that it involves an evaluative dependence; when I love someone, my well-being depends upon her life’s going well. I argue that loving someone also involves a persistent tendency to believe that her life is going well, in the sense that she is a good person, that she is not prone to wickedness. Lovers are inclined, more strongly than they otherwise would be, to give their beloveds the moral benefit of the doubt. These two features of loving—an evaluative dependence and a persistent tendency to believe in the beloved’s moral goodness—provide the conditions for a lover to experience shame when he discovers that his beloved has morally transgressed.
- Full Text:
- Date Issued: 2012
- Authors: Jones, Ward E
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/275692 , vital:55071 , xlink:href="https://doi.org/10.1007/s10677-012-9356-5"
- Description: Shame is one of the more painful consequences of loving someone; my beloved’s doing something immoral can cause me to be ashamed of her. The guiding thought behind this paper is that explaining this phenomenon can tell us something about what it means to love. The phenomenon of beloved-induced shame has been largely neglected by philosophers working on shame, most of whom conceive of shame as being a reflexive attitude. Bennett Helm has recently suggested that in order to account for beloved-induced shame, we should deny the reflexivity of shame. After arguing that Helm’s account is inadequate, I proceed to develop an account of beloved-induced shame that rightly preserves its reflexivity. A familiar feature of love is that it involves an evaluative dependence; when I love someone, my well-being depends upon her life’s going well. I argue that loving someone also involves a persistent tendency to believe that her life is going well, in the sense that she is a good person, that she is not prone to wickedness. Lovers are inclined, more strongly than they otherwise would be, to give their beloveds the moral benefit of the doubt. These two features of loving—an evaluative dependence and a persistent tendency to believe in the beloved’s moral goodness—provide the conditions for a lover to experience shame when he discovers that his beloved has morally transgressed.
- Full Text:
- Date Issued: 2012
A methodological framework for ICT roadmap development for rural areas
- Authors: Jere, Nobert Rangarirai
- Date: 2012
- Subjects: Online social networks , User interfaces (Computer systems) , Communication in rural development
- Language: English
- Type: Thesis , Doctoral , PhD (Computer Science)
- Identifier: vital:11395 , http://hdl.handle.net/10353/d1016147 , Online social networks , User interfaces (Computer systems) , Communication in rural development
- Description: The use of Information Communication Technologies (ICTs) can support sustainable development within societies. ICTs have been supported by governments, private companies, non-governmental organisations, academic institutions and individuals. However, technological changes have made most ICT initiatives haphazard due to poor planning. There is no systematic plan on how to deploy services, infrastructure and devices especially in rural areas. For instance, in some cases, computers have been donated to communities in rural areas yet they are not being used, and ICT services have been deployed without the supporting ICT infrastructure. One of the solutions to addressing these ICT challenges is through the use of roadmaps to guide ICT solution implementation. This thesis proposes an ICT roadmap methodological framework to improve ICT roadmap development for rural ICT solutions. A composite methodological approach was employed in this research. This involves the use of qualitative research techniques such as participant observation, design exercises, workshops, focus groups and individual interviews supported by ethnographic studies. The Siyakhula Living Lab in the Eastern Cape Province of South Africa was used as the case study. Studies were conducted to identify the current state of ICTs in rural areas, the future of ICTs and overview of roadmap developments. Rural users in South Africa, ICT experts in Europe and Africa, government officials and academic institutions were engaged to understand the current ICT planning, developments and needs. The author found that there are variations in individual ICT services required by rural users but, most ICT services in need fall mainly in the areas of health, education, entrepreneurship, agriculture and employment creation for rural people. These services require ICT devices and infrastructure which include computer peripherals, mobile phones, radios, televisions and wireless infrastructure, mobile infrastructure, satellites and broadcasting infrastructure respectively. It was found that the common future ICT projections expected in rural areas include: growth of mobile usage, social networking, increase internet services and localization of services. The roadmap framework is built based on the current state of ICTs, trends in ICTs, future technological projections and the plans currently been initiated in African continent. The ICT roadmap methodological focuses on how roadmaps could accommodate infrastructure, services and ICT devices to reach rural people. This should help rural users to be able to access public services within their respective communities using available ICT devices. ICT stakeholders could use the designed framework to improve the ICT roadmap development process for rural ICT users in Africa.
- Full Text:
- Date Issued: 2012
- Authors: Jere, Nobert Rangarirai
- Date: 2012
- Subjects: Online social networks , User interfaces (Computer systems) , Communication in rural development
- Language: English
- Type: Thesis , Doctoral , PhD (Computer Science)
- Identifier: vital:11395 , http://hdl.handle.net/10353/d1016147 , Online social networks , User interfaces (Computer systems) , Communication in rural development
- Description: The use of Information Communication Technologies (ICTs) can support sustainable development within societies. ICTs have been supported by governments, private companies, non-governmental organisations, academic institutions and individuals. However, technological changes have made most ICT initiatives haphazard due to poor planning. There is no systematic plan on how to deploy services, infrastructure and devices especially in rural areas. For instance, in some cases, computers have been donated to communities in rural areas yet they are not being used, and ICT services have been deployed without the supporting ICT infrastructure. One of the solutions to addressing these ICT challenges is through the use of roadmaps to guide ICT solution implementation. This thesis proposes an ICT roadmap methodological framework to improve ICT roadmap development for rural ICT solutions. A composite methodological approach was employed in this research. This involves the use of qualitative research techniques such as participant observation, design exercises, workshops, focus groups and individual interviews supported by ethnographic studies. The Siyakhula Living Lab in the Eastern Cape Province of South Africa was used as the case study. Studies were conducted to identify the current state of ICTs in rural areas, the future of ICTs and overview of roadmap developments. Rural users in South Africa, ICT experts in Europe and Africa, government officials and academic institutions were engaged to understand the current ICT planning, developments and needs. The author found that there are variations in individual ICT services required by rural users but, most ICT services in need fall mainly in the areas of health, education, entrepreneurship, agriculture and employment creation for rural people. These services require ICT devices and infrastructure which include computer peripherals, mobile phones, radios, televisions and wireless infrastructure, mobile infrastructure, satellites and broadcasting infrastructure respectively. It was found that the common future ICT projections expected in rural areas include: growth of mobile usage, social networking, increase internet services and localization of services. The roadmap framework is built based on the current state of ICTs, trends in ICTs, future technological projections and the plans currently been initiated in African continent. The ICT roadmap methodological focuses on how roadmaps could accommodate infrastructure, services and ICT devices to reach rural people. This should help rural users to be able to access public services within their respective communities using available ICT devices. ICT stakeholders could use the designed framework to improve the ICT roadmap development process for rural ICT users in Africa.
- Full Text:
- Date Issued: 2012
A methodology to institutionalise user experience in a South African provincial government
- Authors: Pretorius, Marco Cobus
- Date: 2012
- Subjects: Human-computer interaction , User interfaces (Computer systems) , Government Web sites -- South Africa , Web site development , Electronic government information
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10489 , http://hdl.handle.net/10948/d1019961
- Description: The number of citizens, who access e-Government websites, is growing significantly and their expectations for additional services are increasing. The Internet has become an essential instrument to distribute information to citizens. Poorly designed websites, however, can divide governments and its citizens. Consensus amongst researchers is that user experience (UX) is an important factor in designing websites specifically e-Government websites. Problems, experienced with website usability, prevent people from accessing and eventually adopting technology, such as e-Government. Countries, such as the United States, United Kingdom and Canada, have shown increased support for UX in e-Government websites. At present, a number of guidelines and design principles exists for e-Government website UX design; however, the effectiveness of the implementation of these guidelines and principles depends on the profiles of the individuals on a website development team and on an organisation’s understanding of UX. Despite the highlighted importance of UX, guidelines and principles are rarely adopted in South African e-Government websites. Usability and UX guidelines cannot be implemented; if there is no executive support; an inadequately trained staff; no routine UX practice; insufficient budget; inefficient use of usability methodologies and user-centred design (UCD) processes. The challenge at present in the UX design field is the institutionalisation of UX, specifically at government level. The goal of this research was to propose and evaluate a methodology to institutionalise UX in South African Provincial Governments (PGs), named the “Institutionalise UX in Government (IUXG) methodology”. The research used the Western Cape Government (WCG) in South Africa as a case study to evaluate the proposed methodology to institutionalise UX in a South African PG. The IUXG methodology (1.0) was proposed from five UX methodologies, as well as from best practices found in literature. The IUXG methodology (1.1) was updated, based on results of a survey to South African PGs, a survey to WCG employees, as well as literature from the WCG. The IUXG methodology (2.0) was updated a final time, based on the case study results and on a confirmation survey with WCG employees after the implementation of the case study. The research study made use of three surveys during this research. The first survey, incorporating UX maturity models, confirmed that understanding and buy-in of UX are limited and that UX maturity levels are low at South African PG level. The second and third surveys were administered to WCG e-Government website officials before and after the implementation of the IUXG methodology. The surveys measured the UX maturity level of the WCG in the component, e-Government for Citizens (e-G4C), responsible for the WCG e-Government website. The final survey results demonstrated that, after the implementation of the IUXG methodology, the WCG improved its level of UX maturity on the identified UX maturity models. Implementation of the IUXG methodology institutionalised UX in the WCG. UX activities became standard practice in the e-Government website environment after the systems development lifecycle (SDLC) incorporated UCD. UX policy, strategy and guidelines were documented for the WCG e-Government website. The WCG constructed the first usability testing facility for a South African PG and improvements to the WCG e-Government website were implemented. The proposed IUXG methodology institutionalised UX in the WCG e-Government website environment. This research is a major contribution, to addressing the current lack of UX practices in South African PGs. South African PGs can use the proposed IUXG methodology to institutionalise UX and it will assist PG officials to develop increased UX maturity levels. The advantage of the IUXG methodology is that it provides PG officials with a step-by-step method how to institutionalise UX in a PG by following the six phases of the IUXG methodology: startup, setup, organisation, method, standards and long-term. The IUXG methodology will assist South African PGs to establish UX practice as a norm. The IUXG methodology will assist PGs with the resources, methods and tools to enable them to implement UX guidelines, which will result in an improved, more usable and more user-centric PG e-Government website.
- Full Text:
- Date Issued: 2012
- Authors: Pretorius, Marco Cobus
- Date: 2012
- Subjects: Human-computer interaction , User interfaces (Computer systems) , Government Web sites -- South Africa , Web site development , Electronic government information
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10489 , http://hdl.handle.net/10948/d1019961
- Description: The number of citizens, who access e-Government websites, is growing significantly and their expectations for additional services are increasing. The Internet has become an essential instrument to distribute information to citizens. Poorly designed websites, however, can divide governments and its citizens. Consensus amongst researchers is that user experience (UX) is an important factor in designing websites specifically e-Government websites. Problems, experienced with website usability, prevent people from accessing and eventually adopting technology, such as e-Government. Countries, such as the United States, United Kingdom and Canada, have shown increased support for UX in e-Government websites. At present, a number of guidelines and design principles exists for e-Government website UX design; however, the effectiveness of the implementation of these guidelines and principles depends on the profiles of the individuals on a website development team and on an organisation’s understanding of UX. Despite the highlighted importance of UX, guidelines and principles are rarely adopted in South African e-Government websites. Usability and UX guidelines cannot be implemented; if there is no executive support; an inadequately trained staff; no routine UX practice; insufficient budget; inefficient use of usability methodologies and user-centred design (UCD) processes. The challenge at present in the UX design field is the institutionalisation of UX, specifically at government level. The goal of this research was to propose and evaluate a methodology to institutionalise UX in South African Provincial Governments (PGs), named the “Institutionalise UX in Government (IUXG) methodology”. The research used the Western Cape Government (WCG) in South Africa as a case study to evaluate the proposed methodology to institutionalise UX in a South African PG. The IUXG methodology (1.0) was proposed from five UX methodologies, as well as from best practices found in literature. The IUXG methodology (1.1) was updated, based on results of a survey to South African PGs, a survey to WCG employees, as well as literature from the WCG. The IUXG methodology (2.0) was updated a final time, based on the case study results and on a confirmation survey with WCG employees after the implementation of the case study. The research study made use of three surveys during this research. The first survey, incorporating UX maturity models, confirmed that understanding and buy-in of UX are limited and that UX maturity levels are low at South African PG level. The second and third surveys were administered to WCG e-Government website officials before and after the implementation of the IUXG methodology. The surveys measured the UX maturity level of the WCG in the component, e-Government for Citizens (e-G4C), responsible for the WCG e-Government website. The final survey results demonstrated that, after the implementation of the IUXG methodology, the WCG improved its level of UX maturity on the identified UX maturity models. Implementation of the IUXG methodology institutionalised UX in the WCG. UX activities became standard practice in the e-Government website environment after the systems development lifecycle (SDLC) incorporated UCD. UX policy, strategy and guidelines were documented for the WCG e-Government website. The WCG constructed the first usability testing facility for a South African PG and improvements to the WCG e-Government website were implemented. The proposed IUXG methodology institutionalised UX in the WCG e-Government website environment. This research is a major contribution, to addressing the current lack of UX practices in South African PGs. South African PGs can use the proposed IUXG methodology to institutionalise UX and it will assist PG officials to develop increased UX maturity levels. The advantage of the IUXG methodology is that it provides PG officials with a step-by-step method how to institutionalise UX in a PG by following the six phases of the IUXG methodology: startup, setup, organisation, method, standards and long-term. The IUXG methodology will assist South African PGs to establish UX practice as a norm. The IUXG methodology will assist PGs with the resources, methods and tools to enable them to implement UX guidelines, which will result in an improved, more usable and more user-centric PG e-Government website.
- Full Text:
- Date Issued: 2012
A Mobile Phone Solution to Improve Geographic Mobility
- Miteche, Sacha, Terzoli, Alfredo, Thinyane, Hannah
- Authors: Miteche, Sacha , Terzoli, Alfredo , Thinyane, Hannah
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428423 , vital:72510 , https://www.cs.ru.ac.za/research/g10m4201/docs/SATNACWIP.pdf
- Description: Motor vehicle ride sharing is a popular way of travelling in most coun-tries. Different incentives have made this mode of travelling to exist formally and informally, for example as in carpooling clubs and hitchhik-ing respectively. Advances in Information and Communication Tech-nology (ICT) have facilitated developments of formal Dynamic Ride Sharing (DRS) systems that target mobile devices. These are seen as solutions to people’s preference of flexible ride sharing services. In de-veloping countries, hitchhiking is a common technique for ride sharing travels. This paper describes a proposal to develop a DRS system that primarily targets mobile phone users in South Africa for informal ride sharing methods done in hitchhiking.
- Full Text:
- Date Issued: 2012
- Authors: Miteche, Sacha , Terzoli, Alfredo , Thinyane, Hannah
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428423 , vital:72510 , https://www.cs.ru.ac.za/research/g10m4201/docs/SATNACWIP.pdf
- Description: Motor vehicle ride sharing is a popular way of travelling in most coun-tries. Different incentives have made this mode of travelling to exist formally and informally, for example as in carpooling clubs and hitchhik-ing respectively. Advances in Information and Communication Tech-nology (ICT) have facilitated developments of formal Dynamic Ride Sharing (DRS) systems that target mobile devices. These are seen as solutions to people’s preference of flexible ride sharing services. In de-veloping countries, hitchhiking is a common technique for ride sharing travels. This paper describes a proposal to develop a DRS system that primarily targets mobile phone users in South Africa for informal ride sharing methods done in hitchhiking.
- Full Text:
- Date Issued: 2012
A model for automated topic spotting in a mobile chat based mathematics tutoring environment
- Authors: Butgereit, Laura Lee
- Date: 2012
- Subjects: Mobile communication systems in education , Mathematics -- Study and teaching , Tutors and tutoring -- Mathematics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9809 , http://hdl.handle.net/10948/d1013741
- Description: Systems of writing have existed for thousands of years. The history of civilisation and the history of writing are so intertwined that it is hard to separate the one from the other. These systems of writing, however, are not static. They change. One of the latest developments in systems of writing is short electronic messages such as seen on Twitter and in MXit. One novel application which uses these short electronic messages is the Dr Math® project. Dr Math is a mobile online tutoring system where pupils can use MXit on their cell phones and receive help with their mathematics homework from volunteer tutors around the world. These conversations between pupils and tutors are held in MXit lingo or MXit language – this cryptic, abbreviated system 0f ryting w1ch l0ks lyk dis. Project μ (pronounced mu and indicating MXit Understander) investigated how topics could be determined in MXit lingo and Project μ's research outputs spot mathematics topics in conversations between Dr Math tutors and pupils. Once the topics are determined, supporting documentation can be presented to the tutors to assist them in helping pupils with their mathematics homework. Project μ made the following contributions to new knowledge: a statistical and linguistic analysis of MXit lingo provides letter frequencies, word frequencies, message length statistics as well as linguistic bases for new spelling conventions seen in MXit based conversations; a post-stemmer for use with MXit lingo removes suffixes from the ends of words taking into account MXit spelling conventions allowing words such as equashun and equation to be reduced to the same root stem; a list of over ten thousand stop words for MXit lingo appropriate for the domain of mathematics; a misspelling corrector for MXit lingo which corrects words such as acount and equates it to account; and a model for spotting mathematical topics in MXit lingo. The model was instantiated and integrated into the Dr Math tutoring platform. Empirical evidence as to the effectiveness of the μ Topic Spotter and the other contributions is also presented. The empirical evidence includes specific statistical tests with MXit lingo, specific tests of the misspelling corrector, stemmer, and feedback mechanism, and an extensive exercise of content analysis with respect to mathematics topics.
- Full Text:
- Date Issued: 2012
- Authors: Butgereit, Laura Lee
- Date: 2012
- Subjects: Mobile communication systems in education , Mathematics -- Study and teaching , Tutors and tutoring -- Mathematics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9809 , http://hdl.handle.net/10948/d1013741
- Description: Systems of writing have existed for thousands of years. The history of civilisation and the history of writing are so intertwined that it is hard to separate the one from the other. These systems of writing, however, are not static. They change. One of the latest developments in systems of writing is short electronic messages such as seen on Twitter and in MXit. One novel application which uses these short electronic messages is the Dr Math® project. Dr Math is a mobile online tutoring system where pupils can use MXit on their cell phones and receive help with their mathematics homework from volunteer tutors around the world. These conversations between pupils and tutors are held in MXit lingo or MXit language – this cryptic, abbreviated system 0f ryting w1ch l0ks lyk dis. Project μ (pronounced mu and indicating MXit Understander) investigated how topics could be determined in MXit lingo and Project μ's research outputs spot mathematics topics in conversations between Dr Math tutors and pupils. Once the topics are determined, supporting documentation can be presented to the tutors to assist them in helping pupils with their mathematics homework. Project μ made the following contributions to new knowledge: a statistical and linguistic analysis of MXit lingo provides letter frequencies, word frequencies, message length statistics as well as linguistic bases for new spelling conventions seen in MXit based conversations; a post-stemmer for use with MXit lingo removes suffixes from the ends of words taking into account MXit spelling conventions allowing words such as equashun and equation to be reduced to the same root stem; a list of over ten thousand stop words for MXit lingo appropriate for the domain of mathematics; a misspelling corrector for MXit lingo which corrects words such as acount and equates it to account; and a model for spotting mathematical topics in MXit lingo. The model was instantiated and integrated into the Dr Math tutoring platform. Empirical evidence as to the effectiveness of the μ Topic Spotter and the other contributions is also presented. The empirical evidence includes specific statistical tests with MXit lingo, specific tests of the misspelling corrector, stemmer, and feedback mechanism, and an extensive exercise of content analysis with respect to mathematics topics.
- Full Text:
- Date Issued: 2012
A model for enhancing trust in South African automotive supply chains through information technology
- Authors: Piderit, Roxanne
- Date: 2012
- Subjects: Automobile supplies industry -- South Africa , Automobiles -- Technological innovations , Business logistics -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9793 , http://hdl.handle.net/10948/d1011851 , Automobile supplies industry -- South Africa , Automobiles -- Technological innovations , Business logistics -- South Africa
- Description: The South African automotive industry is recognised as an important sector for the economy and has thus been prioritised by the South African government. The success of the automotive manufacturers depends on the efficiency and effectiveness of their supply chain. Due to the large number of suppliers involved in these supply chains, enhancing trust in the inter-organisational relationships can ensure the competitiveness of the supply chain. Additionally, insufficient trust can disrupt information sharing between supply chain partners which further impacts on supply chain operations and hence supply chain competitiveness. Thus, both insufficient trust and insufficient information sharing are viewed as contributing factors to the inefficiency and ineffectiveness of a supply chain’s operations. The use of Information Technology to facilitate inter-organisational relationships, in particular in terms of improving information sharing, is an important consideration in this research project. As in the Prisoner’s Dilemma, when supply chain members share information freely, trust levels are increased, hence supply chain effectiveness and efficiency is achieved and therefore the competitiveness of the supply chain is optimised. This study addresses the problem of enhancing trust in automotive supply chains using Information Technology. Previous studies have recognised the importance of trust and information sharing in supply chain relationships. These previous studies have also considered the effect of trust on information sharing, or the effect of information sharing on trust in a single direction. Thus, to address this research problem, a cyclical relationship between trust and information sharing is proposed. In this respect, Information Technology should be used to nurture this cyclical relationship between trust and information sharing. A model for the enhancement of trust in automotive supply chains through Information Technology is proposed to achieve the objectives of this research project. This model includes risk perception; information sharing as a means of enhancing trust; a trust area that consists of both supply chain partner trustworthiness and system trust; the resultant trusting behaviour; and the resultant improved information sharing. As this study is concerned with the use of IT to enhance trust, the inclusion of system trust as a component of the model is a significant contribution of this study which is complementary to the proposed cyclical relationship between trust and information sharing.
- Full Text:
- Date Issued: 2012
A model for enhancing trust in South African automotive supply chains through information technology
- Authors: Piderit, Roxanne
- Date: 2012
- Subjects: Automobile supplies industry -- South Africa , Automobiles -- Technological innovations , Business logistics -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9793 , http://hdl.handle.net/10948/d1011851 , Automobile supplies industry -- South Africa , Automobiles -- Technological innovations , Business logistics -- South Africa
- Description: The South African automotive industry is recognised as an important sector for the economy and has thus been prioritised by the South African government. The success of the automotive manufacturers depends on the efficiency and effectiveness of their supply chain. Due to the large number of suppliers involved in these supply chains, enhancing trust in the inter-organisational relationships can ensure the competitiveness of the supply chain. Additionally, insufficient trust can disrupt information sharing between supply chain partners which further impacts on supply chain operations and hence supply chain competitiveness. Thus, both insufficient trust and insufficient information sharing are viewed as contributing factors to the inefficiency and ineffectiveness of a supply chain’s operations. The use of Information Technology to facilitate inter-organisational relationships, in particular in terms of improving information sharing, is an important consideration in this research project. As in the Prisoner’s Dilemma, when supply chain members share information freely, trust levels are increased, hence supply chain effectiveness and efficiency is achieved and therefore the competitiveness of the supply chain is optimised. This study addresses the problem of enhancing trust in automotive supply chains using Information Technology. Previous studies have recognised the importance of trust and information sharing in supply chain relationships. These previous studies have also considered the effect of trust on information sharing, or the effect of information sharing on trust in a single direction. Thus, to address this research problem, a cyclical relationship between trust and information sharing is proposed. In this respect, Information Technology should be used to nurture this cyclical relationship between trust and information sharing. A model for the enhancement of trust in automotive supply chains through Information Technology is proposed to achieve the objectives of this research project. This model includes risk perception; information sharing as a means of enhancing trust; a trust area that consists of both supply chain partner trustworthiness and system trust; the resultant trusting behaviour; and the resultant improved information sharing. As this study is concerned with the use of IT to enhance trust, the inclusion of system trust as a component of the model is a significant contribution of this study which is complementary to the proposed cyclical relationship between trust and information sharing.
- Full Text:
- Date Issued: 2012