A process model for e-voting in South Africa
- Authors: Swanepoel, Eranee
- Date: 2012
- Subjects: Electronic voting -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9805 , http://hdl.handle.net/10948/d1012588 , Electronic voting -- South Africa
- Description: An election is a core part of any global democracy. Elections provide citizens with the opportunity to voice their opinions. South Africa achieved democracy for the first time in 1994 and has had four successful national elections since then. All of these elections have been declared “free and fair” according to the Independent Electoral Commission (IEC). However, there have been various challenges facing the current South African electoral process. This research, therefore examines alternative methods to improve the current South African electoral process. This research firstly identifies the various challenges and characteristics associated with the current electoral process in South Africa. This research study proposes, to incorporate Information and Communication Technology (ICT) into the South African electoral process. Thus, arguing that utilizing ICT could potentially improve the process. Various countries worldwide have investigated different methods to improve their electoral processes. Countries such as India, Brazil, Estonia and the USA have incorporated ICT into their electoral processes, known as electronic voting (e-voting). Therefore, this research study investigates countries such as India, Brazil, Estonia and the USA which opted to implement e-voting into their electoral process. In addition, various e-voting technologies and their capabilities are explored in detail in this research study. The conclusions drawn from the examination of the electoral processes of countries that utilize e-voting, contributed to the achievement of the primary objective in this research. As a result, to address the various challenges facing the current electoral process in South Africa, a process model was developed called an E-voting Process Model, which depicts two electoral processes namely, an optical scan polling station voting process and an online voting process. This research argues that the E-voting Process Model could potentially improve the current electoral process in South Africa.
- Full Text:
- Date Issued: 2012
- Authors: Swanepoel, Eranee
- Date: 2012
- Subjects: Electronic voting -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9805 , http://hdl.handle.net/10948/d1012588 , Electronic voting -- South Africa
- Description: An election is a core part of any global democracy. Elections provide citizens with the opportunity to voice their opinions. South Africa achieved democracy for the first time in 1994 and has had four successful national elections since then. All of these elections have been declared “free and fair” according to the Independent Electoral Commission (IEC). However, there have been various challenges facing the current South African electoral process. This research, therefore examines alternative methods to improve the current South African electoral process. This research firstly identifies the various challenges and characteristics associated with the current electoral process in South Africa. This research study proposes, to incorporate Information and Communication Technology (ICT) into the South African electoral process. Thus, arguing that utilizing ICT could potentially improve the process. Various countries worldwide have investigated different methods to improve their electoral processes. Countries such as India, Brazil, Estonia and the USA have incorporated ICT into their electoral processes, known as electronic voting (e-voting). Therefore, this research study investigates countries such as India, Brazil, Estonia and the USA which opted to implement e-voting into their electoral process. In addition, various e-voting technologies and their capabilities are explored in detail in this research study. The conclusions drawn from the examination of the electoral processes of countries that utilize e-voting, contributed to the achievement of the primary objective in this research. As a result, to address the various challenges facing the current electoral process in South Africa, a process model was developed called an E-voting Process Model, which depicts two electoral processes namely, an optical scan polling station voting process and an online voting process. This research argues that the E-voting Process Model could potentially improve the current electoral process in South Africa.
- Full Text:
- Date Issued: 2012
A process-genre approach to teaching argumentative writing to grade nine learners
- Authors: Elson, Jillian Margaret
- Date: 2012
- Subjects: English language -- Rhetoric -- Study and teaching (Secondary) English language -- Writing -- Study and teaching (Secondary) Written communication
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1714 , http://hdl.handle.net/10962/d1003597
- Description: This action research study aimed to improve teaching and learning of argumentative writing through a process-genre approach. Learners were carefully guided through the processes of writing the argumentative genre, with the focus being on teaching of the genre and on the structural conventions of writing arguments. Participants were a class of grade nine learners who speak English as a first language. They were chosen for this study as Grade Nine is a crucial year for writing development before learners enter the senior phase and are met with heightened expectations in the curriculum, that often they struggle to meet, as their writing has not been sufficiently developed to an academic level. The focus of writing in Grade Nine is on narrative and prose, so this writing intervention, in which a teaching module was developed in collaboration with the 1eamers, aimed to broaden their writing skills and provide them with a head start in leaming the fine art of argumentation, as this is a useful skill to acquire for purposes even beyond the classroom. Genre theorists advocate the importance of teaching genres to leamers at a young age, as it allows them access into different communities of discourse, as they become aware and understand the conventions held by a patiicular community, and realize the purpose of different styles of writing for effectively communicating, which prepares them to meet the expectations of their audience. Teaching the structures of different genres therefore allows the writer, and the audience, a framework for understanding the text. The process approach has been widely used by educators as it focuses on explicit teaching of writing processes that are fundamental to leamers' development in writing. Learners need to be carefully guided from the initial stages, to the more complex stages (especially in argumentative writing which has been deemed the most complex genre for learners to master) in order to understand the complexities of constructing an essay in a cohesive way, as they need to consider multiple aspects of writing, such as the linguistic features, rhetorical features and structural features of the genre and unify them into a sound argument. This takes time, practice and revision, and extensive feedback is required. The process-genre approach proved to be successful in this study, as leamers showed remarkable improvements in their writing from the initial stages of writing to the final drafts of their essays. The findings revealed that explicit teaching of genres and structural elements of writing is vital for ensuring learners' development. Learners require modelling of the genre, scaffolding and careful guidance through step-by-step processes in order to build confidence and express their ideas effectively in written text. The findings indicate the relevance of using the process-genre approach for teaching and learning and that teaching and learning writing is indeed a process that needs more time and practice that is cUiTently allocated in the curriculum.
- Full Text:
- Date Issued: 2012
- Authors: Elson, Jillian Margaret
- Date: 2012
- Subjects: English language -- Rhetoric -- Study and teaching (Secondary) English language -- Writing -- Study and teaching (Secondary) Written communication
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1714 , http://hdl.handle.net/10962/d1003597
- Description: This action research study aimed to improve teaching and learning of argumentative writing through a process-genre approach. Learners were carefully guided through the processes of writing the argumentative genre, with the focus being on teaching of the genre and on the structural conventions of writing arguments. Participants were a class of grade nine learners who speak English as a first language. They were chosen for this study as Grade Nine is a crucial year for writing development before learners enter the senior phase and are met with heightened expectations in the curriculum, that often they struggle to meet, as their writing has not been sufficiently developed to an academic level. The focus of writing in Grade Nine is on narrative and prose, so this writing intervention, in which a teaching module was developed in collaboration with the 1eamers, aimed to broaden their writing skills and provide them with a head start in leaming the fine art of argumentation, as this is a useful skill to acquire for purposes even beyond the classroom. Genre theorists advocate the importance of teaching genres to leamers at a young age, as it allows them access into different communities of discourse, as they become aware and understand the conventions held by a patiicular community, and realize the purpose of different styles of writing for effectively communicating, which prepares them to meet the expectations of their audience. Teaching the structures of different genres therefore allows the writer, and the audience, a framework for understanding the text. The process approach has been widely used by educators as it focuses on explicit teaching of writing processes that are fundamental to leamers' development in writing. Learners need to be carefully guided from the initial stages, to the more complex stages (especially in argumentative writing which has been deemed the most complex genre for learners to master) in order to understand the complexities of constructing an essay in a cohesive way, as they need to consider multiple aspects of writing, such as the linguistic features, rhetorical features and structural features of the genre and unify them into a sound argument. This takes time, practice and revision, and extensive feedback is required. The process-genre approach proved to be successful in this study, as leamers showed remarkable improvements in their writing from the initial stages of writing to the final drafts of their essays. The findings revealed that explicit teaching of genres and structural elements of writing is vital for ensuring learners' development. Learners require modelling of the genre, scaffolding and careful guidance through step-by-step processes in order to build confidence and express their ideas effectively in written text. The findings indicate the relevance of using the process-genre approach for teaching and learning and that teaching and learning writing is indeed a process that needs more time and practice that is cUiTently allocated in the curriculum.
- Full Text:
- Date Issued: 2012
A profile for a successful MBA candidate at the NMMU Business School
- Authors: Mafani, Mzilindile Claudius
- Date: 2012
- Subjects: Business schools -- Admission , Universities and colleges
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8702 , http://hdl.handle.net/10948/d1009509 , Business schools -- Admission , Universities and colleges
- Description: The objective of the study is to investigate and compare the 2010 first year intake students’ profile, for the NMMU Business School MBA programme with their module success rate against success indicators derived from previous literature and the SHL tests results in order to compile a conceptual framework as a guide to analyse the database used. The MBA success indicators, as provided in previous literature, were analysed by addressing the following: The psychometric tests as predictors of success; Age as a predictor of success; Cultural background as a predictor of success; Work experience as a predictor of success; and, Educational background as a predictor of success. The NMMU Business School MBA students’ historical data were used as a database for this study. The module pass rates were collated as part of the database, which included the students’ biographical information. The results of the SHL test battery used as the entrance test for admission could not be obtained as the information is regarded as confidential given that the nature of the assessment data requires certain training qualifications from users; and SHL South Africa was approached to collaborate on this study. SHL South Africa performed the statistical analysis and provided these for interpretation and use in the study. The study revealed that more than half of the NMMU MBA candidates did not complete the programme in the minimum prescribed period, as only 40.5 percent of the candidates completed successfully all modules in this period, and 52 percent of them were in the 30 -39 years-age category. It also revealed that 78.1 percent of those that had successfully completed the programme were males compared with the 21.9 percent of females that completed the course. The study showed that in the 59.5 percent of those that were not successful, 40.4 percent were females compared to 59.6 percent of unsuccessful males in the same sample. Although the pass rates ranged above 75 percent, only one module had the full sample writing the examination, and the lowest core module had 67percent candidates writing the examination. The current entrance process is recommended with improvements to increase the pass rates, throughputs, and to allow for a stricter analysis of the entrance test results.
- Full Text:
- Date Issued: 2012
- Authors: Mafani, Mzilindile Claudius
- Date: 2012
- Subjects: Business schools -- Admission , Universities and colleges
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8702 , http://hdl.handle.net/10948/d1009509 , Business schools -- Admission , Universities and colleges
- Description: The objective of the study is to investigate and compare the 2010 first year intake students’ profile, for the NMMU Business School MBA programme with their module success rate against success indicators derived from previous literature and the SHL tests results in order to compile a conceptual framework as a guide to analyse the database used. The MBA success indicators, as provided in previous literature, were analysed by addressing the following: The psychometric tests as predictors of success; Age as a predictor of success; Cultural background as a predictor of success; Work experience as a predictor of success; and, Educational background as a predictor of success. The NMMU Business School MBA students’ historical data were used as a database for this study. The module pass rates were collated as part of the database, which included the students’ biographical information. The results of the SHL test battery used as the entrance test for admission could not be obtained as the information is regarded as confidential given that the nature of the assessment data requires certain training qualifications from users; and SHL South Africa was approached to collaborate on this study. SHL South Africa performed the statistical analysis and provided these for interpretation and use in the study. The study revealed that more than half of the NMMU MBA candidates did not complete the programme in the minimum prescribed period, as only 40.5 percent of the candidates completed successfully all modules in this period, and 52 percent of them were in the 30 -39 years-age category. It also revealed that 78.1 percent of those that had successfully completed the programme were males compared with the 21.9 percent of females that completed the course. The study showed that in the 59.5 percent of those that were not successful, 40.4 percent were females compared to 59.6 percent of unsuccessful males in the same sample. Although the pass rates ranged above 75 percent, only one module had the full sample writing the examination, and the lowest core module had 67percent candidates writing the examination. The current entrance process is recommended with improvements to increase the pass rates, throughputs, and to allow for a stricter analysis of the entrance test results.
- Full Text:
- Date Issued: 2012
A psycho-educational programme to facilitate the mental health of adolescent girls who are victims of verbal bullying
- Authors: Jacobs, Ruwayda
- Date: 2012
- Subjects: Teenage girls -- Mental health -- South Africa , Psychoanalysis , Bullying
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9946 , http://hdl.handle.net/10948/d1014579
- Description: Bullying appears to be a worldwide phenomenon. It occurs within schools, homes, and in the community too. Bullying is a form of aggressive behaviour. Female bullying is not so easily noticed, as girls hardly ever use physical forms of aggression. Bullying can have a detrimental effect on the mental health of the victim. The victims of bullying experience symptoms of mental discomfort, which include low self esteem, feelings of helplessness, feelings of worthlessness and inferiority, lack of confidence, isolation, self-conscientiousness; and lastly, this can lead to suicide. Some form of intervention is necessary to provide adolescents with skills to combat bullying and help them to become mentally healthy again. The overall goal of the study was to develop, implement and evaluate a psycho-educational programme for female adolescents in a secondary school setting, in order to assist them in coping with bullying. The objectives of the research study were to: Conduct asituational analysis to identify the mental health needs of adolescent girls, as victimsof bullying. Develop a psycho-educational programme to facilitate the promotion of mental health of those adolescent girls who are victims of bullying. Implement the psycho-educational programme to facilitate coping by adolescent girls who are victims of bullying. Assess whether the adolescent girls have benefitted from attending the psycho-educational programme. The researcher used a qualitative, explorative, descriptive and contextual design. The research methodology consisted of four phases. In phase one of the research, a situational analysis was done; and the characteristics of mental discomfort exhibited by the victim were identified. The needs of the adolescent girl who has been bullied have already been described. Phase two involved the development of a psycho-educational programme. The information from the situational analysis was used to develop the conceptual framework. The six concepts in the survey list of Dickoff et al. (1968:422) were described as follows: the recipient is the adolescent girl who has been bullied, the agent is an advanced psychiatric nurse, the context is the community and the secondary school where bullying takes place, the dynamics of the intervention constitute the mental discomfort experienced by the adolescent girl. This is what motivates her to participate in the programme. The procedure was identified as the psycho-educational programme, while the terminus or outcome of the intervention for the adolescent girl would be for her to experience mental health after being exposed to the psycho-educational programme. The relationship between the concepts was used to form the mind map of the conceptual framework. This guided the development of the psycho-educational programme. The content of the programme has already been described. In phase three the psycho-educational programme is implemented and in phase four the programme is evaluated. The psycho-educational programme taught the teenage girls skills and it provided them with knowledge to cope better with the bullying. Attending the programme made the teenagers aware that they needed to change to experience mental health and happiness. The empirical study took place in phase four. The data-gathering method in phase four included the conducting of semi-structured interviews with the adolescent girls who participated in the programme, as well as the teachers of these adolescent girls and their parents. Naïve sketches, reflective journals, observations made and field notes formed part of this database. The data was analyzed by means of Tesch‟s descriptive analysis (in Creswell, 2003:192). The participants had to comment on how they were coping after the implementation of the psycho-educational programme. In conclusion, an intervention in the form of the psycho-educational programme was shown to be beneficial to adolescent girls who were victims of bullying, to assist them in coping with the aftermath of being bullied. Recommendations were made to enhance nursing practice, as well as nursing education and nursing research. Keywords: Adolescent girls, bullying, secondary schools, advanced psychiatric nurse, psycho-educational programme, mental health.
- Full Text:
- Date Issued: 2012
- Authors: Jacobs, Ruwayda
- Date: 2012
- Subjects: Teenage girls -- Mental health -- South Africa , Psychoanalysis , Bullying
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9946 , http://hdl.handle.net/10948/d1014579
- Description: Bullying appears to be a worldwide phenomenon. It occurs within schools, homes, and in the community too. Bullying is a form of aggressive behaviour. Female bullying is not so easily noticed, as girls hardly ever use physical forms of aggression. Bullying can have a detrimental effect on the mental health of the victim. The victims of bullying experience symptoms of mental discomfort, which include low self esteem, feelings of helplessness, feelings of worthlessness and inferiority, lack of confidence, isolation, self-conscientiousness; and lastly, this can lead to suicide. Some form of intervention is necessary to provide adolescents with skills to combat bullying and help them to become mentally healthy again. The overall goal of the study was to develop, implement and evaluate a psycho-educational programme for female adolescents in a secondary school setting, in order to assist them in coping with bullying. The objectives of the research study were to: Conduct asituational analysis to identify the mental health needs of adolescent girls, as victimsof bullying. Develop a psycho-educational programme to facilitate the promotion of mental health of those adolescent girls who are victims of bullying. Implement the psycho-educational programme to facilitate coping by adolescent girls who are victims of bullying. Assess whether the adolescent girls have benefitted from attending the psycho-educational programme. The researcher used a qualitative, explorative, descriptive and contextual design. The research methodology consisted of four phases. In phase one of the research, a situational analysis was done; and the characteristics of mental discomfort exhibited by the victim were identified. The needs of the adolescent girl who has been bullied have already been described. Phase two involved the development of a psycho-educational programme. The information from the situational analysis was used to develop the conceptual framework. The six concepts in the survey list of Dickoff et al. (1968:422) were described as follows: the recipient is the adolescent girl who has been bullied, the agent is an advanced psychiatric nurse, the context is the community and the secondary school where bullying takes place, the dynamics of the intervention constitute the mental discomfort experienced by the adolescent girl. This is what motivates her to participate in the programme. The procedure was identified as the psycho-educational programme, while the terminus or outcome of the intervention for the adolescent girl would be for her to experience mental health after being exposed to the psycho-educational programme. The relationship between the concepts was used to form the mind map of the conceptual framework. This guided the development of the psycho-educational programme. The content of the programme has already been described. In phase three the psycho-educational programme is implemented and in phase four the programme is evaluated. The psycho-educational programme taught the teenage girls skills and it provided them with knowledge to cope better with the bullying. Attending the programme made the teenagers aware that they needed to change to experience mental health and happiness. The empirical study took place in phase four. The data-gathering method in phase four included the conducting of semi-structured interviews with the adolescent girls who participated in the programme, as well as the teachers of these adolescent girls and their parents. Naïve sketches, reflective journals, observations made and field notes formed part of this database. The data was analyzed by means of Tesch‟s descriptive analysis (in Creswell, 2003:192). The participants had to comment on how they were coping after the implementation of the psycho-educational programme. In conclusion, an intervention in the form of the psycho-educational programme was shown to be beneficial to adolescent girls who were victims of bullying, to assist them in coping with the aftermath of being bullied. Recommendations were made to enhance nursing practice, as well as nursing education and nursing research. Keywords: Adolescent girls, bullying, secondary schools, advanced psychiatric nurse, psycho-educational programme, mental health.
- Full Text:
- Date Issued: 2012
A psychobiographical study of John Winston Lennon
- Authors: Kitching, Philip Herman
- Date: 2012
- Subjects: Lennon, John, 1940-1980 , Psychology -- Biographical methods , Musicians
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9915 , http://hdl.handle.net/10948/d1010847 , Lennon, John, 1940-1980 , Psychology -- Biographical methods , Musicians
- Description: Psychobiography can be viewed as the re-writing of an individual’s life story previously undetected. In general it consists of a combination of two central elements: biography and psychological theory that aim to explain the particular individual’s psychological development. This particular study serves to explore the extraordinary life of renowned singer, songwriter, artist and activist, John Winston Lennon (1940-1980). The basis for this investigation will take the form of notable biographical accounts of the subject’s life, together with Austrian psychiatrist Alfred Adler’s (1938) theory of Individual Psychology, which recognizes the importance of human society for the development of individual character and the orientation of every single action and emotion in the life of a human being. Adler’s theory further explores that the main motives of human thought and behaviour are an individual’s striving for superiority and power, partly in compensation for his feeling of inferiority. The psychobiographical data collection and analysis for this research thesis will be guided by Yin’s (1994) theory of ‘analytic generalisation’, which uses a theoretical framework in selecting relevant data which develops a matrix as a descriptive framework for organizing and integrating that data, and Alexander’s (1988) analytical model which focuses on lifting out themes through principal identifiers of salience was used and applied. John Winston Lennon expressed his personal experiences and ideals through his songs and became the spokesman for his generation on modern day issues such as feminism and world peace. It is however, unfortunate that Lennon throughout his life remained a boy who felt rejected and unloved by his parents and strove to be superior in all aspects of his rich life in an attempt to acquire the love and acceptance that was not bestowed on him as a child.
- Full Text:
- Date Issued: 2012
- Authors: Kitching, Philip Herman
- Date: 2012
- Subjects: Lennon, John, 1940-1980 , Psychology -- Biographical methods , Musicians
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9915 , http://hdl.handle.net/10948/d1010847 , Lennon, John, 1940-1980 , Psychology -- Biographical methods , Musicians
- Description: Psychobiography can be viewed as the re-writing of an individual’s life story previously undetected. In general it consists of a combination of two central elements: biography and psychological theory that aim to explain the particular individual’s psychological development. This particular study serves to explore the extraordinary life of renowned singer, songwriter, artist and activist, John Winston Lennon (1940-1980). The basis for this investigation will take the form of notable biographical accounts of the subject’s life, together with Austrian psychiatrist Alfred Adler’s (1938) theory of Individual Psychology, which recognizes the importance of human society for the development of individual character and the orientation of every single action and emotion in the life of a human being. Adler’s theory further explores that the main motives of human thought and behaviour are an individual’s striving for superiority and power, partly in compensation for his feeling of inferiority. The psychobiographical data collection and analysis for this research thesis will be guided by Yin’s (1994) theory of ‘analytic generalisation’, which uses a theoretical framework in selecting relevant data which develops a matrix as a descriptive framework for organizing and integrating that data, and Alexander’s (1988) analytical model which focuses on lifting out themes through principal identifiers of salience was used and applied. John Winston Lennon expressed his personal experiences and ideals through his songs and became the spokesman for his generation on modern day issues such as feminism and world peace. It is however, unfortunate that Lennon throughout his life remained a boy who felt rejected and unloved by his parents and strove to be superior in all aspects of his rich life in an attempt to acquire the love and acceptance that was not bestowed on him as a child.
- Full Text:
- Date Issued: 2012
A psychobiography of Friedrich Nietzsche
- Authors: Booysen, Duane Danny-Coe
- Date: 2012
- Subjects: Nietzsche, Friedrich Wilhelm, 1844-1900 , Philosophers -- Germany -- Biography
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9943 , http://hdl.handle.net/10948/d1013191
- Description: The primary aim of this psychobiography was to examine Friedrich Nietzsche’s life by utilizing Carl Rogers’ theory of the fully functioning person. Friedrich Nietzsche (1844 - 1900) has become an iconic figure in German philosophy and literature. Nietzsche’s criticism of western morality and culture led him to believe that humankind was not living to its highest potential and consequently Nietzsche sought after a life of self-becoming. Nietzsche’s philosophy has influenced various people such as Viktor Frankl, DH Lawrence, Michel Foucault and NP van Wyk Louw. Nietzsche was chosen as the research subject because of personal interest, his prominence as a philosopher, and because of his ambition to live a meaningful life. Psychobiographical research with the use of psychological theory allows for the exploration and description of the life of an individual. This significant area of research involving the application of psychological theory has in previous decades, however, been under-utilized, particularly in South Africa. But more recently, has it been receiving increasing support by researchers both internationally and in South Africa. Data collected on Friedrich Nietzsche’s life were drawn from several primary and secondary sources. A data collection and analysis grid was developed in order to collect data systematically, and to analyse the data according to the qualities of Carl Rogers’ theory. The study adds to the body of psychobiographical research. It also provides an empirical exploration of Carl Rogers’ theory of the fully functioning person. As the scope of the study was that of a master’s dissertation, future research, utilising semi-structured interviews with knowledgeable relatives, academics, psychologists, biographers, philosophers and historians on Nietzsche’s life, could extend this line of research. In conclusion, the current psychobiography suggests that Nietzsche lived a life filled with several personal crises. Despite these challenges, Nietzsche directed himself towards living as a fully functioning person. Nietzsche’s impetus towards self-becoming is also evident within his philosophical writings. Nietzsche was an extraordinary individual whose life, as described in the current psychobiography, corresponds closely to Rogers’ (1961) theory of a fully functioning person.
- Full Text:
- Date Issued: 2012
- Authors: Booysen, Duane Danny-Coe
- Date: 2012
- Subjects: Nietzsche, Friedrich Wilhelm, 1844-1900 , Philosophers -- Germany -- Biography
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9943 , http://hdl.handle.net/10948/d1013191
- Description: The primary aim of this psychobiography was to examine Friedrich Nietzsche’s life by utilizing Carl Rogers’ theory of the fully functioning person. Friedrich Nietzsche (1844 - 1900) has become an iconic figure in German philosophy and literature. Nietzsche’s criticism of western morality and culture led him to believe that humankind was not living to its highest potential and consequently Nietzsche sought after a life of self-becoming. Nietzsche’s philosophy has influenced various people such as Viktor Frankl, DH Lawrence, Michel Foucault and NP van Wyk Louw. Nietzsche was chosen as the research subject because of personal interest, his prominence as a philosopher, and because of his ambition to live a meaningful life. Psychobiographical research with the use of psychological theory allows for the exploration and description of the life of an individual. This significant area of research involving the application of psychological theory has in previous decades, however, been under-utilized, particularly in South Africa. But more recently, has it been receiving increasing support by researchers both internationally and in South Africa. Data collected on Friedrich Nietzsche’s life were drawn from several primary and secondary sources. A data collection and analysis grid was developed in order to collect data systematically, and to analyse the data according to the qualities of Carl Rogers’ theory. The study adds to the body of psychobiographical research. It also provides an empirical exploration of Carl Rogers’ theory of the fully functioning person. As the scope of the study was that of a master’s dissertation, future research, utilising semi-structured interviews with knowledgeable relatives, academics, psychologists, biographers, philosophers and historians on Nietzsche’s life, could extend this line of research. In conclusion, the current psychobiography suggests that Nietzsche lived a life filled with several personal crises. Despite these challenges, Nietzsche directed himself towards living as a fully functioning person. Nietzsche’s impetus towards self-becoming is also evident within his philosophical writings. Nietzsche was an extraordinary individual whose life, as described in the current psychobiography, corresponds closely to Rogers’ (1961) theory of a fully functioning person.
- Full Text:
- Date Issued: 2012
A qualitative investigation of gendered perspectives on, maternity leave/family responsibility duties/social roles and access to career development, in the Johannesburg branch of a Multination Corporation (MNC): the case of company A, S.A. Johannesburg branch
- Authors: Mbatha, Mbalenhle
- Date: 2012
- Subjects: Glass ceiling (Employment discrimination) -- South Africa -- Johannesburg , Sex role in the work environment -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/5657 , vital:20956
- Description: In recent years, there has been increasing concern that gender bias has prevented women from advancing as rapidly and as frequently as men into management positions. Although the number of women managers has increased, they may experience difficulty moving into upper management positions. The purpose of our research was to study employee gender perception of key variables of women and the positions held in high technology companies. In this research, phenomenological research method was chosen, because the aim of it is to determine what the experience means for the people who have experienced it. Based on the collected data, answers and experiences, structural analysis was done in order to find out the major phenomena of gender perceptions. A number of variables uncover the perception of aspects of policy and gender and barriers that may affect female employees' opportunities for advancement. Using a sample of 30 full-time employees from Company A, the results indicated that position held was significantly different for male and female employees. The results also indicated that neither male nor female employees appeared to notice the apparent perceptions apparently as a glass ceiling within their company and the Implications discussed and recommendations provided. With reference to the Empirical research, this paper increases the knowledge about women’s career development and provides recommendations how to deal with it. It is also expected that this thesis will be helpful to all women who are in the labour market for their career development and advancement.
- Full Text:
- Date Issued: 2012
- Authors: Mbatha, Mbalenhle
- Date: 2012
- Subjects: Glass ceiling (Employment discrimination) -- South Africa -- Johannesburg , Sex role in the work environment -- South Africa -- Johannesburg
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/5657 , vital:20956
- Description: In recent years, there has been increasing concern that gender bias has prevented women from advancing as rapidly and as frequently as men into management positions. Although the number of women managers has increased, they may experience difficulty moving into upper management positions. The purpose of our research was to study employee gender perception of key variables of women and the positions held in high technology companies. In this research, phenomenological research method was chosen, because the aim of it is to determine what the experience means for the people who have experienced it. Based on the collected data, answers and experiences, structural analysis was done in order to find out the major phenomena of gender perceptions. A number of variables uncover the perception of aspects of policy and gender and barriers that may affect female employees' opportunities for advancement. Using a sample of 30 full-time employees from Company A, the results indicated that position held was significantly different for male and female employees. The results also indicated that neither male nor female employees appeared to notice the apparent perceptions apparently as a glass ceiling within their company and the Implications discussed and recommendations provided. With reference to the Empirical research, this paper increases the knowledge about women’s career development and provides recommendations how to deal with it. It is also expected that this thesis will be helpful to all women who are in the labour market for their career development and advancement.
- Full Text:
- Date Issued: 2012
A self-reflexive investigation into effective translation strategies with reference to Jeanne Goosen's Louoond
- Authors: Minnaar, Rae-Ann
- Date: 2012
- Subjects: Translating and interpreting -- South Africa , Afrikaans fiction -- Translating -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8364 , http://hdl.handle.net/10948/d1008401 , Translating and interpreting -- South Africa , Afrikaans fiction -- Translating -- South Africa
- Description: This dissertation is a self-reflexive study into effective translation strategies. The study focuses primarily on the translation strategies by Vinay and Darbelnet (1995), namely direct and oblique strategies of translation. The strategies are used in the translation of Jeanne Goosen‘s novel Louoond (1987). The novel was chosen on account of the writer‘s unique writing style and the challenges it poses for the prospective translator. One of the key objectives of this study was to comprehensively illustrate Vinay and Darbelnet‘s strategies of translation when translating the novel. The theoretical framework of this study is an analysis of Vinay and Darbelnet‘s translation strategies. The study also aims to give insight into what is meant by translation, translation theory, literary theory and literary translation. The translation of the novel is the final product, but in order to illustrate each procedure of Vinay and Darbelnet (1995) examples were taken from this final product. The chapters that follow illustrate the strategies of Vinay and Darbelnet (1995) as used in the translation of an Afrikaans text (SL) into English (TL). Conclusions can then be drawn as to whether full equivalence was obtained and whether the translation is deemed successful.
- Full Text:
- Date Issued: 2012
- Authors: Minnaar, Rae-Ann
- Date: 2012
- Subjects: Translating and interpreting -- South Africa , Afrikaans fiction -- Translating -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8364 , http://hdl.handle.net/10948/d1008401 , Translating and interpreting -- South Africa , Afrikaans fiction -- Translating -- South Africa
- Description: This dissertation is a self-reflexive study into effective translation strategies. The study focuses primarily on the translation strategies by Vinay and Darbelnet (1995), namely direct and oblique strategies of translation. The strategies are used in the translation of Jeanne Goosen‘s novel Louoond (1987). The novel was chosen on account of the writer‘s unique writing style and the challenges it poses for the prospective translator. One of the key objectives of this study was to comprehensively illustrate Vinay and Darbelnet‘s strategies of translation when translating the novel. The theoretical framework of this study is an analysis of Vinay and Darbelnet‘s translation strategies. The study also aims to give insight into what is meant by translation, translation theory, literary theory and literary translation. The translation of the novel is the final product, but in order to illustrate each procedure of Vinay and Darbelnet (1995) examples were taken from this final product. The chapters that follow illustrate the strategies of Vinay and Darbelnet (1995) as used in the translation of an Afrikaans text (SL) into English (TL). Conclusions can then be drawn as to whether full equivalence was obtained and whether the translation is deemed successful.
- Full Text:
- Date Issued: 2012
A socio-economic impact analysis of selected national development agency funded projects in the Eastern Cape province
- Authors: Mditshwa, Siviwe
- Date: 2012
- Subjects: Economics -- Sociological aspects , Economic impact analysis -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8254 , http://hdl.handle.net/10948/d1012045 , Economics -- Sociological aspects , Economic impact analysis -- South Africa -- Eastern Cape
- Description: The South African government cannot in isolation deliver all the community needs as expected. Therefore, the involvement of all the sectors becomes crucial in the fight against poverty, largely due to the fact that the delivery of services (community needs) by the public sector does not balance with the amount of the resources allocated. This implies that government cannot successfully manage to deliver the community needs in isolation. A shared service delivery strategy to support the socio-economic development initiatives towards sustainable shared growth is therefore essential. The Public-Private Partnerships and Public-Public Partnership have emerged as alternative measures or important public policy tools in addressing the ‘shared delivery’ of services to the general public of South Africa. As a result of high levels of poverty experienced by the people of the Eastern Cape, in fact by the larger South African population, major interventions by NGOs, CBOs and other civil organisation are gaining momentum. Likewise, the establishment of the National Development Agency as mandated is also a public policy tool that looks into improving the socio-economic development of the local communities. Such interventions and partnerships therefore have a big role to play in support of the ANC led government to effectively deliver on its mandate, thus ensuring improved citizen’s welfare. Importantly, what triggered the undertaking of this study are the high levels of poverty, poor local economic developments and poor monitoring and evaluation of the funded projects in the Eastern Cape. In this study community and poverty in developing South Africa is well discussed. Attention is drawn to the whole idea of socio-economic development - simultaneously touching on the socio-economic shift in SA. Local Economic Development is also discussed with its LED dimensions, including business developments within the two said districts. The main aim of this study is to establish the extent to which the interventions by National Development Agency ‘Public Entity’ have improved the socio-economic development of the rural local communities in the Amathole and OR Tambo Districts towards sustainable and shared growth. The study includes a conceptual meaning of the public sector in general with its key service delivery role players. The study also includes the conceptual theoretical basis of the socio-economic development with specific reference to South Africa then cascades down to the study areas. Under the same note, a detailed explanation is also given on the nature of Public-Private Partnership (PPP) as a model for improved socio-economic development. Conceptual presentation of the Public-Public Partnership (PPP) for shared service delivery is also alluded to.
- Full Text:
- Date Issued: 2012
- Authors: Mditshwa, Siviwe
- Date: 2012
- Subjects: Economics -- Sociological aspects , Economic impact analysis -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8254 , http://hdl.handle.net/10948/d1012045 , Economics -- Sociological aspects , Economic impact analysis -- South Africa -- Eastern Cape
- Description: The South African government cannot in isolation deliver all the community needs as expected. Therefore, the involvement of all the sectors becomes crucial in the fight against poverty, largely due to the fact that the delivery of services (community needs) by the public sector does not balance with the amount of the resources allocated. This implies that government cannot successfully manage to deliver the community needs in isolation. A shared service delivery strategy to support the socio-economic development initiatives towards sustainable shared growth is therefore essential. The Public-Private Partnerships and Public-Public Partnership have emerged as alternative measures or important public policy tools in addressing the ‘shared delivery’ of services to the general public of South Africa. As a result of high levels of poverty experienced by the people of the Eastern Cape, in fact by the larger South African population, major interventions by NGOs, CBOs and other civil organisation are gaining momentum. Likewise, the establishment of the National Development Agency as mandated is also a public policy tool that looks into improving the socio-economic development of the local communities. Such interventions and partnerships therefore have a big role to play in support of the ANC led government to effectively deliver on its mandate, thus ensuring improved citizen’s welfare. Importantly, what triggered the undertaking of this study are the high levels of poverty, poor local economic developments and poor monitoring and evaluation of the funded projects in the Eastern Cape. In this study community and poverty in developing South Africa is well discussed. Attention is drawn to the whole idea of socio-economic development - simultaneously touching on the socio-economic shift in SA. Local Economic Development is also discussed with its LED dimensions, including business developments within the two said districts. The main aim of this study is to establish the extent to which the interventions by National Development Agency ‘Public Entity’ have improved the socio-economic development of the rural local communities in the Amathole and OR Tambo Districts towards sustainable and shared growth. The study includes a conceptual meaning of the public sector in general with its key service delivery role players. The study also includes the conceptual theoretical basis of the socio-economic development with specific reference to South Africa then cascades down to the study areas. Under the same note, a detailed explanation is also given on the nature of Public-Private Partnership (PPP) as a model for improved socio-economic development. Conceptual presentation of the Public-Public Partnership (PPP) for shared service delivery is also alluded to.
- Full Text:
- Date Issued: 2012
A South African perspective on the tax implications of virtual asset accumulation and transactions stemming from persistent virtual worlds
- Authors: Haupt, Alexander
- Date: 2012
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:884 , http://hdl.handle.net/10962/d1001638
- Description: Massively multiplayer online role-playing games are growing in popularity with millions of people participating in these persistent online environments on a daily basis. Accompanying the ever-increasing subscription numbers is an increase in real money trade transactions stemming from these game worlds. The research question to be addressed in this thesis is whether transactions stemming from virtual worlds have real-world taxation consequences. The goal of this research is to determine the taxability of virtual assets obtained in structured as well as unstructured virtual environments and to attempt to establish the differences between capital and revenue receipts in these virtual realms, taking into account the nature of a receipt. The general deduction formula is applied to establish the deductibility of expenditure incurred whilst participating in these virtual environments. Sundry matters such as Value-Added Tax, donations tax, the withholding tax on gambling gains and tax avoidance will also be addressed. The methodology adopted for the research could best be described as interpretative, aimed at analysing and interpreting the relationship between real world taxes and persistent virtual worlds and the transactions that stem from participation therein. The research is based purely on documentary evidence. After applying relevant tax legislation to virtual economies it became evident that merely because virtual assets only exist in virtual reality does not necessarily preclude them real world tax consequences. It was concluded, however, that it is not practical for the South African Revenue Service to monitor all virtual world transactions or for participant taxpayers to calculate the real world value of each and every asset acquired in-world. As a result, it was concluded that real world tax consequences should only be applied in situations where participants actually convert their virtual assets into real world currency.
- Full Text:
- Date Issued: 2012
- Authors: Haupt, Alexander
- Date: 2012
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:884 , http://hdl.handle.net/10962/d1001638
- Description: Massively multiplayer online role-playing games are growing in popularity with millions of people participating in these persistent online environments on a daily basis. Accompanying the ever-increasing subscription numbers is an increase in real money trade transactions stemming from these game worlds. The research question to be addressed in this thesis is whether transactions stemming from virtual worlds have real-world taxation consequences. The goal of this research is to determine the taxability of virtual assets obtained in structured as well as unstructured virtual environments and to attempt to establish the differences between capital and revenue receipts in these virtual realms, taking into account the nature of a receipt. The general deduction formula is applied to establish the deductibility of expenditure incurred whilst participating in these virtual environments. Sundry matters such as Value-Added Tax, donations tax, the withholding tax on gambling gains and tax avoidance will also be addressed. The methodology adopted for the research could best be described as interpretative, aimed at analysing and interpreting the relationship between real world taxes and persistent virtual worlds and the transactions that stem from participation therein. The research is based purely on documentary evidence. After applying relevant tax legislation to virtual economies it became evident that merely because virtual assets only exist in virtual reality does not necessarily preclude them real world tax consequences. It was concluded, however, that it is not practical for the South African Revenue Service to monitor all virtual world transactions or for participant taxpayers to calculate the real world value of each and every asset acquired in-world. As a result, it was concluded that real world tax consequences should only be applied in situations where participants actually convert their virtual assets into real world currency.
- Full Text:
- Date Issued: 2012
A spatial and temporal analysis of elephant induced thicket degradation in Addo Elephant National Park
- Authors: Smith, Janis
- Date: 2012
- Subjects: Soil degradation -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10661 , http://hdl.handle.net/10948/d1012903
- Description: Thicket degradation within the Addo Elephant National Park (AENP), Eastern Cape, South Africa is a key issue of concern. The increasing elephant densities have over time threatened thicket vegetation, which is endemic to this area. The “elephant problem” within the Park has raised many concerns as to the vulnerability of thicket to elephant impacts. Remote sensing provides an environment in which temporal changes in thicket vegetation condition can be assessed. The main aim of this study was to assess temporal and spatial trends in thicket degradation within the AENP, using multi-temporal satellite imagery. Elephant induced thicket degradation was assessed using multi-temporal satellite imagery from between 1973 and 2010. Changes in thicket condition in relation to the AENP expansion were analysed using the Normalized Difference Vegetation Index (NDVI), post-classification and landscape metrics. The ‘per-pixel’ based classification approach was carried out and change detection of land cover classes was analysed by post-classification. Landscape spatial metrics were used in order to gain an understanding of vegetation fragmentation trends. Temporal changes in vegetation gradients in relation to water points and thicket condition within the botanical reserves were also assessed. Thicket condition was noted to deteriorate as the AENP expanded. An expansion of degraded vegetation away from the water points was identified during the study period. Thicket condition in botanical reserves 1 and 2 fluctuated over time, with a registered increase in intact thicket within botanical reserve 2, with botanical reserve 3 remaining constant. Landscape spatial metric analyses revealed evidence of increased vegetation fragmentation as new areas of the AENP were opened for elephant activity. A progressive decline in intact thicket and increase in degraded thicket were observed. Considering the current elephant densities, thicket degradation within AENP is set to continue, causing a continued threat to the thicket biome.
- Full Text:
- Date Issued: 2012
- Authors: Smith, Janis
- Date: 2012
- Subjects: Soil degradation -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10661 , http://hdl.handle.net/10948/d1012903
- Description: Thicket degradation within the Addo Elephant National Park (AENP), Eastern Cape, South Africa is a key issue of concern. The increasing elephant densities have over time threatened thicket vegetation, which is endemic to this area. The “elephant problem” within the Park has raised many concerns as to the vulnerability of thicket to elephant impacts. Remote sensing provides an environment in which temporal changes in thicket vegetation condition can be assessed. The main aim of this study was to assess temporal and spatial trends in thicket degradation within the AENP, using multi-temporal satellite imagery. Elephant induced thicket degradation was assessed using multi-temporal satellite imagery from between 1973 and 2010. Changes in thicket condition in relation to the AENP expansion were analysed using the Normalized Difference Vegetation Index (NDVI), post-classification and landscape metrics. The ‘per-pixel’ based classification approach was carried out and change detection of land cover classes was analysed by post-classification. Landscape spatial metrics were used in order to gain an understanding of vegetation fragmentation trends. Temporal changes in vegetation gradients in relation to water points and thicket condition within the botanical reserves were also assessed. Thicket condition was noted to deteriorate as the AENP expanded. An expansion of degraded vegetation away from the water points was identified during the study period. Thicket condition in botanical reserves 1 and 2 fluctuated over time, with a registered increase in intact thicket within botanical reserve 2, with botanical reserve 3 remaining constant. Landscape spatial metric analyses revealed evidence of increased vegetation fragmentation as new areas of the AENP were opened for elephant activity. A progressive decline in intact thicket and increase in degraded thicket were observed. Considering the current elephant densities, thicket degradation within AENP is set to continue, causing a continued threat to the thicket biome.
- Full Text:
- Date Issued: 2012
A spatial and temporal analysis of the changes in alien macrophyte communities and a baseline assessment of the macroinvertebrates associated with Eurasian watermilfoil, Myriophyllum spicatum L. (Haloragaceae) in the Vaal River
- Authors: Fordham, Colin Justin
- Date: 2012
- Subjects: Water hyacinth -- Control -- South Africa , Aquatic weeds -- Control -- South Africa , Eurasian watermilfoil -- South Africa , Water quality management -- South Africa , Freshwater invertebrates -- Ecology -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5767 , http://hdl.handle.net/10962/d1005455 , Water hyacinth -- Control -- South Africa , Aquatic weeds -- Control -- South Africa , Eurasian watermilfoil -- South Africa , Water quality management -- South Africa , Freshwater invertebrates -- Ecology -- South Africa
- Description: The majority of South Africa’s fresh water (lotic and lentic), is eutrophic and this has resulted in water hyacinth, Eichhornia crassipes (C.Mart.) Solms. (Pontederiaceae) becoming South Africa’s most damaging aquatic macrophyte. Recently however, concerns have also been voiced over the presence of highly invasive submerged macrophyte species, such as Eurasian water-milfoil, Myriophyllum spicatum L. (Haloragaceae) in the Vaal River. Interaction studies between floating and submerged macrophytes have shown that floating macrophyte dominance restricts light penetration into the water column shading out submerged macrophytes while submerged macrophyte dominance reduces nutrient availability in the water column limiting floating macrophyte growth. This cycle ensures that these species cannot coexist in the same habitat for extended periods of time. The aims of this thesis were to: 1. Investigate changes in the historical and current macrophyte dominance in the Vaal River 2. Determine whether these changes could be attributed to stochastic events, such as floods and herbicide control measures. 3. The physio-chemical conditions of the water column, and whether pressure from herbivory by macroinvertebrates had possibly influenced Eurasian water-milfoil’s ability to dominate. Spatial and temporal analysis of satellite imagery revealed that water hyacinth and submerged macrophyte species dominated different regions of the study area over different periods of time from 2006 to 2010. This was significantly correlated with nitrate concentrations of the water column. One of the lower Vaal River Water Management Areas (WMA) had changed from a water hyacinth dominated state in 2006 to an alternative submerged macrophyte dominated stable state in 2008. It was concluded that this change could be attributed to: a stochastic flooding event in 2006; perturbation from integrated control measures implemented against water hyacinth; and low nitrate concentrations of the WMA. The lack of any substantial macroinvertebrate herbivory pressure or control measures implemented against Eurasian water-milfoil, compared to similar surveys conducted in the U.S.A. and its native range in Eurasia was shown to contribute to its dominance. Future successful integrated control programmes, including biological control against Eurasian water-milfoil, could provide the perturbation required to restore the ecosystem. However, without the reduction in nitrate concentration levels, water hyacinth will remain the dominant stable state of the rest of the Vaal River.
- Full Text:
- Date Issued: 2012
- Authors: Fordham, Colin Justin
- Date: 2012
- Subjects: Water hyacinth -- Control -- South Africa , Aquatic weeds -- Control -- South Africa , Eurasian watermilfoil -- South Africa , Water quality management -- South Africa , Freshwater invertebrates -- Ecology -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5767 , http://hdl.handle.net/10962/d1005455 , Water hyacinth -- Control -- South Africa , Aquatic weeds -- Control -- South Africa , Eurasian watermilfoil -- South Africa , Water quality management -- South Africa , Freshwater invertebrates -- Ecology -- South Africa
- Description: The majority of South Africa’s fresh water (lotic and lentic), is eutrophic and this has resulted in water hyacinth, Eichhornia crassipes (C.Mart.) Solms. (Pontederiaceae) becoming South Africa’s most damaging aquatic macrophyte. Recently however, concerns have also been voiced over the presence of highly invasive submerged macrophyte species, such as Eurasian water-milfoil, Myriophyllum spicatum L. (Haloragaceae) in the Vaal River. Interaction studies between floating and submerged macrophytes have shown that floating macrophyte dominance restricts light penetration into the water column shading out submerged macrophytes while submerged macrophyte dominance reduces nutrient availability in the water column limiting floating macrophyte growth. This cycle ensures that these species cannot coexist in the same habitat for extended periods of time. The aims of this thesis were to: 1. Investigate changes in the historical and current macrophyte dominance in the Vaal River 2. Determine whether these changes could be attributed to stochastic events, such as floods and herbicide control measures. 3. The physio-chemical conditions of the water column, and whether pressure from herbivory by macroinvertebrates had possibly influenced Eurasian water-milfoil’s ability to dominate. Spatial and temporal analysis of satellite imagery revealed that water hyacinth and submerged macrophyte species dominated different regions of the study area over different periods of time from 2006 to 2010. This was significantly correlated with nitrate concentrations of the water column. One of the lower Vaal River Water Management Areas (WMA) had changed from a water hyacinth dominated state in 2006 to an alternative submerged macrophyte dominated stable state in 2008. It was concluded that this change could be attributed to: a stochastic flooding event in 2006; perturbation from integrated control measures implemented against water hyacinth; and low nitrate concentrations of the WMA. The lack of any substantial macroinvertebrate herbivory pressure or control measures implemented against Eurasian water-milfoil, compared to similar surveys conducted in the U.S.A. and its native range in Eurasia was shown to contribute to its dominance. Future successful integrated control programmes, including biological control against Eurasian water-milfoil, could provide the perturbation required to restore the ecosystem. However, without the reduction in nitrate concentration levels, water hyacinth will remain the dominant stable state of the rest of the Vaal River.
- Full Text:
- Date Issued: 2012
A statistical model for valuation of residential property in the Nelson Mandela Metropolitan area
- Authors: Van der Byl, Calven
- Date: 2012
- Subjects: Residential real estate -- Port Elizabeth , Housing -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9347 , http://hdl.handle.net/10948/d1020045
- Description: This study applies a process of correlation analysis and hedonic based modelling to investigate the influence of housing attributes and date of sale on transaction prices for residential real estate in the Nelson Mandela Metropole area. Availability of reliable data is a challenge in real estate studies in South Africa. This study integrates several publicly available resources for the purposes of constructing a statistical model. A model is constructed based on a forward variable selection routine using selection criteria. The resulting model shows six highly significant variables that can be used for modelling purposes. The resulting model is used to make comparisons in the value of the geographical location.
- Full Text:
- Date Issued: 2012
- Authors: Van der Byl, Calven
- Date: 2012
- Subjects: Residential real estate -- Port Elizabeth , Housing -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:9347 , http://hdl.handle.net/10948/d1020045
- Description: This study applies a process of correlation analysis and hedonic based modelling to investigate the influence of housing attributes and date of sale on transaction prices for residential real estate in the Nelson Mandela Metropole area. Availability of reliable data is a challenge in real estate studies in South Africa. This study integrates several publicly available resources for the purposes of constructing a statistical model. A model is constructed based on a forward variable selection routine using selection criteria. The resulting model shows six highly significant variables that can be used for modelling purposes. The resulting model is used to make comparisons in the value of the geographical location.
- Full Text:
- Date Issued: 2012
A structural and functional specification of a SCIM for service interaction management and personalisation in the IMS
- Authors: Tsietsi, Mosiuoa Jeremia
- Date: 2012
- Subjects: Internet Protocol multimedia subsystem , Internet Protocol multimedia subsystem -- Specifications , Long-Term Evolution (Telecommunications) , European Telecommunications Standards Institute , Wireless communication systems , Multimedia communications
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4606 , http://hdl.handle.net/10962/d1004864 , Internet Protocol multimedia subsystem , Internet Protocol multimedia subsystem -- Specifications , Long-Term Evolution (Telecommunications) , European Telecommunications Standards Institute , Wireless communication systems , Multimedia communications
- Description: The Internet Protocol Multimedia Subsystem (IMS) is a component of the 3G mobile network that has been specified by standards development organisations such as the 3GPP (3rd Generation Partnership Project) and ETSI (European Telecommunication Standards Institute). IMS seeks to guarantee that the telecommunication network of the future provides subscribers with seamless access to services across disparate networks. In order to achieve this, it defines a service architecture that hosts application servers that provide subscribers with value added services. Typically, an application server bundles all the functionality it needs to execute the services it delivers, however this view is currently being challenged. It is now thought that services should be synthesised from simple building blocks called service capabilities. This decomposition would facilitate the re-use of service capabilities across multiple services and would support the creation of new services that could not have originally been conceived. The shift from monolithic services to those built from service capabilities poses a challenge to the current service model in IMS. To accommodate this, the 3GPP has defined an entity known as a service capability interaction manager (SCIM) that would be responsible for managing the interactions between service capabilities in order to realise complex services. Some of these interactions could potentially lead to undesirable results, which the SCIM must work to avoid. As an added requirement, it is believed that the network should allow policies to be applied to network services which the SCIM should be responsible for enforcing. At the time of writing, the functional and structural architecture of the SCIM has not yet been standardised. This thesis explores the current serv ice architecture of the IMS in detail. Proposals that address the structure and functions of the SCIM are carefully compared and contrasted. This investigation leads to the presentation of key aspects of the SCIM, and provides solutions that explain how it should interact with service capabilities, manage undesirable interactions and factor user and network operator policies into its execution model. A modified design of the IMS service layer that embeds the SCIM is subsequently presented and described. The design uses existing IMS protocols and requires no change in the behaviour of the standard IMS entities. In order to develop a testbed for experimental verification of the design, the identification of suitable software platforms was required. This thesis presents some of the most popular platforms currently used by developers such as the Open IMS Core and OpenSER, as well as an open source, Java-based, multimedia communication platform called Mobicents. As a precursor to the development of the SCIM, a converged multimedia service is presented that describes how a video streaming application that is leveraged by a web portal was implemented for an IMS testbed using Mobicents components. The Mobicents SIP Servlets container was subsequently used to model an initial prototype of the SCIM, using a mUlti-component telephony service to illustrate the proposed service execution model. The design focuses on SIP-based services only, but should also work for other types of IMS application servers as well.
- Full Text:
- Date Issued: 2012
- Authors: Tsietsi, Mosiuoa Jeremia
- Date: 2012
- Subjects: Internet Protocol multimedia subsystem , Internet Protocol multimedia subsystem -- Specifications , Long-Term Evolution (Telecommunications) , European Telecommunications Standards Institute , Wireless communication systems , Multimedia communications
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4606 , http://hdl.handle.net/10962/d1004864 , Internet Protocol multimedia subsystem , Internet Protocol multimedia subsystem -- Specifications , Long-Term Evolution (Telecommunications) , European Telecommunications Standards Institute , Wireless communication systems , Multimedia communications
- Description: The Internet Protocol Multimedia Subsystem (IMS) is a component of the 3G mobile network that has been specified by standards development organisations such as the 3GPP (3rd Generation Partnership Project) and ETSI (European Telecommunication Standards Institute). IMS seeks to guarantee that the telecommunication network of the future provides subscribers with seamless access to services across disparate networks. In order to achieve this, it defines a service architecture that hosts application servers that provide subscribers with value added services. Typically, an application server bundles all the functionality it needs to execute the services it delivers, however this view is currently being challenged. It is now thought that services should be synthesised from simple building blocks called service capabilities. This decomposition would facilitate the re-use of service capabilities across multiple services and would support the creation of new services that could not have originally been conceived. The shift from monolithic services to those built from service capabilities poses a challenge to the current service model in IMS. To accommodate this, the 3GPP has defined an entity known as a service capability interaction manager (SCIM) that would be responsible for managing the interactions between service capabilities in order to realise complex services. Some of these interactions could potentially lead to undesirable results, which the SCIM must work to avoid. As an added requirement, it is believed that the network should allow policies to be applied to network services which the SCIM should be responsible for enforcing. At the time of writing, the functional and structural architecture of the SCIM has not yet been standardised. This thesis explores the current serv ice architecture of the IMS in detail. Proposals that address the structure and functions of the SCIM are carefully compared and contrasted. This investigation leads to the presentation of key aspects of the SCIM, and provides solutions that explain how it should interact with service capabilities, manage undesirable interactions and factor user and network operator policies into its execution model. A modified design of the IMS service layer that embeds the SCIM is subsequently presented and described. The design uses existing IMS protocols and requires no change in the behaviour of the standard IMS entities. In order to develop a testbed for experimental verification of the design, the identification of suitable software platforms was required. This thesis presents some of the most popular platforms currently used by developers such as the Open IMS Core and OpenSER, as well as an open source, Java-based, multimedia communication platform called Mobicents. As a precursor to the development of the SCIM, a converged multimedia service is presented that describes how a video streaming application that is leveraged by a web portal was implemented for an IMS testbed using Mobicents components. The Mobicents SIP Servlets container was subsequently used to model an initial prototype of the SCIM, using a mUlti-component telephony service to illustrate the proposed service execution model. The design focuses on SIP-based services only, but should also work for other types of IMS application servers as well.
- Full Text:
- Date Issued: 2012
A study of a 2010 strike in a sub-directorate of the Nelson Mandela Bay Municipality
- Authors: Kigozi, Annet Nakimuli
- Date: 2012
- Subjects: Strikes and lockouts -- Municipal government -- South Africa -- Nelson Mandela Bay Municipality , Industrial relations -- South Africa -- Nelson Mandela Bay Municipality , Labor unions -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9421 , http://hdl.handle.net/10948/d1021229
- Description: This research adds on to Chaulk & Brown (2008) research on the assessment of employees’ reaction towards management and the union in the pre-strike and post-strike period. Research problem: The study raised two aspects that form part of the statement of the problem. Firstly, strike action has been a major aspect describing the South African industrial relations climate. The high level of strike action prompts the question; “Are South Africans World Class Strikers?” (Anstey, 2006). Secondly, the analysis of strike action has focussed more on the economic and power testing impact analysis rather than psychological and affective impact analysis of the strike such as establishing the impact of the strike on job satisfaction, work climate satisfaction, organisational commitment, management satisfaction, and union commitment. Research objectives: To address the research problem, research objectives, research questions and hypotheses were established. The main objective of the study was to examine the causes, processes and the impact of the strike, thereby making a contribution to both theory and practice. Whereas the contribution to theory took a form of building on to the research carried out by Chaulk & Brown (2008), and exploring through the process analysis on how behaviour during the conflict impacts on the ongoing relationships within the organisation, the contribution to practice took a form of highlighting to management and unions the impact of the strike on employees so that necessary interventions to prevent the negative impact of the strike would be created. Research questions: Six research questions were established and these were; what were the causes of the strike; how did the strike unfold; what were the substantive outcomes of the strike; what were the procedural outcomes of the strike; what were the climate outcomes of the strike; is there a relationship between the demographic factors and the affective outcomes of the strike? Research hypotheses; Five research hypotheses were established for the research. These hypotheses were aimed at establishing the impact of the strike on the affective outcomes of the strike. These were; there was a significant change in the level of organizational commitment after the strike; there was a significant change in the level of job satisfaction after the strike; there was a significant change in the level of work climate satisfaction after the strike; there was a significant change in the level of management satisfaction after the strike; and there is was significant change in the level of union commitment after the strike. Research design and methodology: Both qualitative and quantitative methods were used to collect data. Qualitatively, interviews, media reports and the Municipality records were being used to collect data on the causes, processes and outcomes of the strike. Quantitatively a survey questionnaire was used to collect data. Data was collected from 105 Traffic Officers who had recently been on strike in the NMBM. Measures of organisational and union commitment, employee job satisfaction, and work climate satisfaction were assessed using the Chaulk & Brown (2008) questionnaire. A paired sample t-test, ANOVA test, and Scheffe test and Cronbach’s alpha, were some of the quantitative methods used in data analysis. Henning’s approach was used to analyze qualitative data. Major findings: The results from the questionnaire revealed that job satisfaction, work climate satisfaction and management satisfaction significantly changed in the post-strike period. In addition, impact of demographic factors on affective factors was evident for participation in the strike and the level of union commitment; age and job satisfaction; occupational level and job satisfaction; and service length and union commitment.
- Full Text:
- Date Issued: 2012
- Authors: Kigozi, Annet Nakimuli
- Date: 2012
- Subjects: Strikes and lockouts -- Municipal government -- South Africa -- Nelson Mandela Bay Municipality , Industrial relations -- South Africa -- Nelson Mandela Bay Municipality , Labor unions -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9421 , http://hdl.handle.net/10948/d1021229
- Description: This research adds on to Chaulk & Brown (2008) research on the assessment of employees’ reaction towards management and the union in the pre-strike and post-strike period. Research problem: The study raised two aspects that form part of the statement of the problem. Firstly, strike action has been a major aspect describing the South African industrial relations climate. The high level of strike action prompts the question; “Are South Africans World Class Strikers?” (Anstey, 2006). Secondly, the analysis of strike action has focussed more on the economic and power testing impact analysis rather than psychological and affective impact analysis of the strike such as establishing the impact of the strike on job satisfaction, work climate satisfaction, organisational commitment, management satisfaction, and union commitment. Research objectives: To address the research problem, research objectives, research questions and hypotheses were established. The main objective of the study was to examine the causes, processes and the impact of the strike, thereby making a contribution to both theory and practice. Whereas the contribution to theory took a form of building on to the research carried out by Chaulk & Brown (2008), and exploring through the process analysis on how behaviour during the conflict impacts on the ongoing relationships within the organisation, the contribution to practice took a form of highlighting to management and unions the impact of the strike on employees so that necessary interventions to prevent the negative impact of the strike would be created. Research questions: Six research questions were established and these were; what were the causes of the strike; how did the strike unfold; what were the substantive outcomes of the strike; what were the procedural outcomes of the strike; what were the climate outcomes of the strike; is there a relationship between the demographic factors and the affective outcomes of the strike? Research hypotheses; Five research hypotheses were established for the research. These hypotheses were aimed at establishing the impact of the strike on the affective outcomes of the strike. These were; there was a significant change in the level of organizational commitment after the strike; there was a significant change in the level of job satisfaction after the strike; there was a significant change in the level of work climate satisfaction after the strike; there was a significant change in the level of management satisfaction after the strike; and there is was significant change in the level of union commitment after the strike. Research design and methodology: Both qualitative and quantitative methods were used to collect data. Qualitatively, interviews, media reports and the Municipality records were being used to collect data on the causes, processes and outcomes of the strike. Quantitatively a survey questionnaire was used to collect data. Data was collected from 105 Traffic Officers who had recently been on strike in the NMBM. Measures of organisational and union commitment, employee job satisfaction, and work climate satisfaction were assessed using the Chaulk & Brown (2008) questionnaire. A paired sample t-test, ANOVA test, and Scheffe test and Cronbach’s alpha, were some of the quantitative methods used in data analysis. Henning’s approach was used to analyze qualitative data. Major findings: The results from the questionnaire revealed that job satisfaction, work climate satisfaction and management satisfaction significantly changed in the post-strike period. In addition, impact of demographic factors on affective factors was evident for participation in the strike and the level of union commitment; age and job satisfaction; occupational level and job satisfaction; and service length and union commitment.
- Full Text:
- Date Issued: 2012
A study of factors influencing curriculum management in Bizana schools in the Eastern Cape Privince
- Authors: Jebe, Nomakhaya
- Date: 2012
- Subjects: Curriculum management -- Schools , Eastern Cape -- South Africa
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18446 , http://hdl.handle.net/11260/d1007295
- Description: The study sought to investigate factors influencing curriculum management in Bizana schools. A survey design which used mainly qualitative aspects of research was used in the study. Questionnaires and interview schedules were used to collect data. Participants (N=60) were made up of 10 learners,10 teachers, 10 School Management Team members ( SMTs), 10 parents and 20 district officials. The teachers, learners, parents and SMTs including principals were selected from 3 schools being a Primary School, a Junior Secondary School and a Senior Secondary School. Frequency tables were used to present quantitative data while verbal quotes were presented in support of themes that emerged from the qualitative data. The findings of the study revealed that the following factors were regarded as the causes of poor curriculum management; lack of training and skills on the part of curriculum managers, un-availability of resources in schools, the level of parental involvement in curriculum and regular systemic changes. It was recommended that the Department of Education should ensure that all curriculum managers are being trained to provide them with enough skills. The Department of Education should also supply schools with adequate resources. Parents should also be trained on curriculum issues. Too many changes in the system within a short space of time should be avoided.
- Full Text:
- Date Issued: 2012
- Authors: Jebe, Nomakhaya
- Date: 2012
- Subjects: Curriculum management -- Schools , Eastern Cape -- South Africa
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18446 , http://hdl.handle.net/11260/d1007295
- Description: The study sought to investigate factors influencing curriculum management in Bizana schools. A survey design which used mainly qualitative aspects of research was used in the study. Questionnaires and interview schedules were used to collect data. Participants (N=60) were made up of 10 learners,10 teachers, 10 School Management Team members ( SMTs), 10 parents and 20 district officials. The teachers, learners, parents and SMTs including principals were selected from 3 schools being a Primary School, a Junior Secondary School and a Senior Secondary School. Frequency tables were used to present quantitative data while verbal quotes were presented in support of themes that emerged from the qualitative data. The findings of the study revealed that the following factors were regarded as the causes of poor curriculum management; lack of training and skills on the part of curriculum managers, un-availability of resources in schools, the level of parental involvement in curriculum and regular systemic changes. It was recommended that the Department of Education should ensure that all curriculum managers are being trained to provide them with enough skills. The Department of Education should also supply schools with adequate resources. Parents should also be trained on curriculum issues. Too many changes in the system within a short space of time should be avoided.
- Full Text:
- Date Issued: 2012
A study of practices in the alternatives to corporal punishment strategy being implemented in selected primary schools in Buffalo city metro municipality: implications for school leadership
- Khewu, Noncedo Princess Dorcas
- Authors: Khewu, Noncedo Princess Dorcas
- Date: 2012
- Subjects: School discipline -- South Africa -- Eastern Cape , Rewards and punishments in education -- South Africa -- Eastern Cape , Corporal punishment of children -- South Africa -- Eastern Cape , Classroom management -- South Africa -- Eastern Cape , Discipline of children -- South Africa -- Eastern Cape , Primary school teachers -- South Africa -- Eastern Cape , School children -- South Africa -- Eastern Cape -- Attitudes
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16170 , http://hdl.handle.net/10353/533 , School discipline -- South Africa -- Eastern Cape , Rewards and punishments in education -- South Africa -- Eastern Cape , Corporal punishment of children -- South Africa -- Eastern Cape , Classroom management -- South Africa -- Eastern Cape , Discipline of children -- South Africa -- Eastern Cape , Primary school teachers -- South Africa -- Eastern Cape , School children -- South Africa -- Eastern Cape -- Attitudes
- Description: The problem of indiscipline in schools has attracted the growing attention of researchers in South Africa and the world at large. Learner indiscipline has been variously reflected in behaviours which range from serious ones such as drug abuse, assault, theft, rape and murder, to minor ones such as truancy; all of which negatively affect teaching and learning. While there is agreement on the need to address the problem, there is a great deal of contestation around what strategies and practices are appropriate to instil discipline in schools. Within this debate many countries, including South Africa, have decided to move away from punitive approaches such as corporal punishment and replace them with what is called Alternatives to Corporal Punishment (ATCP). The main aim of this study was to interrogate the consistency that prevails between disciplinary practices and principles of alternatives to corporal punishment and the implications of this for school leadership. A mixed method design was used. The study was conducted in two phases: the first was a survey during which trends in disciplinary practices were established; the second was a multiple case study where in-depth interviews were conducted in five primary schools across different contexts which included farm, suburban, township, rural and informal settlement locations. This study has seven main findings. First, it was found that primary schools in the Buffalo City Metropolitan Municipality experienced minor offenses which clustered around levels 1 and 2 of the ATCP classification. Second, although statistically there was a weak negative correlation (r = - 0.11) between location and behaviour which is not significant (p >. 05) or (p = .46), qualitative evidence suggests a relationship between context and disciplinary offences. Third, principals’ roles in instilling discipline were focused mainly on reactive administrative and management functions rather than on giving leadership designed to inspire alternative ways of behaving. Fourth, principals’ and teachers’ belief in the use of alternatives to corporal punishment revealed ambivalence and lack of understanding. Fifth, measures to instil discipline, even though they were said to be based on alternatives to corporal punishment, placed heavy emphasis on inflicting pain and relied on extrinsic control. Sixth, two disciplinary measures designed to inflict pain were found to be weakly associated, but significantly (p < 0.05) with violent behaviour, lending credence to view that in using certain practices to instil discipline there are socialisation consequences. Finally, the use of some measures recommended by alternatives to corporal punishment yielded some unintended socialisation consequences. The study concludes that there was lack of consistency between disciplinary practices in Buffalo City Metropolitan Municipality primary schools and the principles of Alternatives to Corporal Punishment. The findings suggest that it is difficult to achieve the consistency without a school leadership which understands that the alternatives call for a paradigm shift in measures to instil discipline. For improving discipline in schools, it is recommended that school principals and stakeholders must focus on measures that are meant to cultivate a new school culture guided by values of self-discipline in order to minimise the need for extrinsic punitive control. For further research, a follow up study based on a probability sample, which should include secondary schools, could be undertaken in order that results can be generalised.
- Full Text:
- Date Issued: 2012
- Authors: Khewu, Noncedo Princess Dorcas
- Date: 2012
- Subjects: School discipline -- South Africa -- Eastern Cape , Rewards and punishments in education -- South Africa -- Eastern Cape , Corporal punishment of children -- South Africa -- Eastern Cape , Classroom management -- South Africa -- Eastern Cape , Discipline of children -- South Africa -- Eastern Cape , Primary school teachers -- South Africa -- Eastern Cape , School children -- South Africa -- Eastern Cape -- Attitudes
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16170 , http://hdl.handle.net/10353/533 , School discipline -- South Africa -- Eastern Cape , Rewards and punishments in education -- South Africa -- Eastern Cape , Corporal punishment of children -- South Africa -- Eastern Cape , Classroom management -- South Africa -- Eastern Cape , Discipline of children -- South Africa -- Eastern Cape , Primary school teachers -- South Africa -- Eastern Cape , School children -- South Africa -- Eastern Cape -- Attitudes
- Description: The problem of indiscipline in schools has attracted the growing attention of researchers in South Africa and the world at large. Learner indiscipline has been variously reflected in behaviours which range from serious ones such as drug abuse, assault, theft, rape and murder, to minor ones such as truancy; all of which negatively affect teaching and learning. While there is agreement on the need to address the problem, there is a great deal of contestation around what strategies and practices are appropriate to instil discipline in schools. Within this debate many countries, including South Africa, have decided to move away from punitive approaches such as corporal punishment and replace them with what is called Alternatives to Corporal Punishment (ATCP). The main aim of this study was to interrogate the consistency that prevails between disciplinary practices and principles of alternatives to corporal punishment and the implications of this for school leadership. A mixed method design was used. The study was conducted in two phases: the first was a survey during which trends in disciplinary practices were established; the second was a multiple case study where in-depth interviews were conducted in five primary schools across different contexts which included farm, suburban, township, rural and informal settlement locations. This study has seven main findings. First, it was found that primary schools in the Buffalo City Metropolitan Municipality experienced minor offenses which clustered around levels 1 and 2 of the ATCP classification. Second, although statistically there was a weak negative correlation (r = - 0.11) between location and behaviour which is not significant (p >. 05) or (p = .46), qualitative evidence suggests a relationship between context and disciplinary offences. Third, principals’ roles in instilling discipline were focused mainly on reactive administrative and management functions rather than on giving leadership designed to inspire alternative ways of behaving. Fourth, principals’ and teachers’ belief in the use of alternatives to corporal punishment revealed ambivalence and lack of understanding. Fifth, measures to instil discipline, even though they were said to be based on alternatives to corporal punishment, placed heavy emphasis on inflicting pain and relied on extrinsic control. Sixth, two disciplinary measures designed to inflict pain were found to be weakly associated, but significantly (p < 0.05) with violent behaviour, lending credence to view that in using certain practices to instil discipline there are socialisation consequences. Finally, the use of some measures recommended by alternatives to corporal punishment yielded some unintended socialisation consequences. The study concludes that there was lack of consistency between disciplinary practices in Buffalo City Metropolitan Municipality primary schools and the principles of Alternatives to Corporal Punishment. The findings suggest that it is difficult to achieve the consistency without a school leadership which understands that the alternatives call for a paradigm shift in measures to instil discipline. For improving discipline in schools, it is recommended that school principals and stakeholders must focus on measures that are meant to cultivate a new school culture guided by values of self-discipline in order to minimise the need for extrinsic punitive control. For further research, a follow up study based on a probability sample, which should include secondary schools, could be undertaken in order that results can be generalised.
- Full Text:
- Date Issued: 2012
A study of the application of clinoptilolite as an ion exchange agent for selected metals in aqueous solution
- Authors: Dyeshana, Vuyokazi
- Date: 2012
- Subjects: Ion exchange , Clinoptilolite
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10419 , http://hdl.handle.net/10948/d1013257
- Description: The aim of this study was to establish whether samples of South African-mined clinoptilolite could be used to remove selected metal cations from aqueous solution. The clinoptilolite samples supplied, (by Pratley SA) were in four different particle sizes. Batch study results revealed a decrease in the initial metal concentration in samples that were in contact with clinoptilolite. The finer particle size clinoptilolite had a greater capacity to remove metal cations from aqueous solution. However, ion-exchange results from atomic absorption analysis showed that the larger particle sizes, removed more magnesium ions. Magnesium was the only ion investigated in this study that was present as an exchangeable ion in the Pratley clinoptilolite chemical formula, (MgCaNa2K2)2.5(AlO2)7(SiO2)30.21H2O. Results from the ion-exchange studies showed that the decreasing order of percentage metal removal at pH 3.00 was as follows: Pb > Ni > Cu > Fe > Mg. The mass of metal ions that accumulated on one gram of clinoptilolite as determined from the isotherms was calculated to be 6.16 mg/g for lead and 0.74 mg/g for copper. Data from the lead equilibrium studies were fitted into Langmuir and Freundlich equations and linear regression was used to calculate linearity coefficients for the isotherms. The results showed that the removal of lead ions by clinoptilolite is complex as both monolayer and multilayer adsorption occurs on a heterogeneous surface.
- Full Text:
- Date Issued: 2012
- Authors: Dyeshana, Vuyokazi
- Date: 2012
- Subjects: Ion exchange , Clinoptilolite
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10419 , http://hdl.handle.net/10948/d1013257
- Description: The aim of this study was to establish whether samples of South African-mined clinoptilolite could be used to remove selected metal cations from aqueous solution. The clinoptilolite samples supplied, (by Pratley SA) were in four different particle sizes. Batch study results revealed a decrease in the initial metal concentration in samples that were in contact with clinoptilolite. The finer particle size clinoptilolite had a greater capacity to remove metal cations from aqueous solution. However, ion-exchange results from atomic absorption analysis showed that the larger particle sizes, removed more magnesium ions. Magnesium was the only ion investigated in this study that was present as an exchangeable ion in the Pratley clinoptilolite chemical formula, (MgCaNa2K2)2.5(AlO2)7(SiO2)30.21H2O. Results from the ion-exchange studies showed that the decreasing order of percentage metal removal at pH 3.00 was as follows: Pb > Ni > Cu > Fe > Mg. The mass of metal ions that accumulated on one gram of clinoptilolite as determined from the isotherms was calculated to be 6.16 mg/g for lead and 0.74 mg/g for copper. Data from the lead equilibrium studies were fitted into Langmuir and Freundlich equations and linear regression was used to calculate linearity coefficients for the isotherms. The results showed that the removal of lead ions by clinoptilolite is complex as both monolayer and multilayer adsorption occurs on a heterogeneous surface.
- Full Text:
- Date Issued: 2012
A study of the coordination behaviour of the lanthanide series with oxygen-donor ligands
- Authors: Kuhn, Kirsti
- Date: 2012
- Subjects: Chemical elements , Chemical reactions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10394 , http://hdl.handle.net/10948/d1009533 , Chemical elements , Chemical reactions
- Description: The reactions between the lanthanide nitrate salts and the ligand triphenylphosphine oxide (TPPO) gave rise to nine-coordinated complexes of the nature Ln(TPPO)3(NO3)3, for Ln = La – Dy, Er, Tm, in which the Ln(III) centre is coordinated to three phosphoryl oxygen atoms and three bidentate nitrate ligands. Generally, the geometry can be described as being mer-octahedral, where the nitrate ligands are considered as monoatomic species. The product of the reaction between Yb(NO3)3·5H2O and TPPO, however, was a highly symmetrical eight-coordinated complex, in which the Yb(III) centre was coordinated to two bidentate nitrate groups and four TPPO molecules. The geometry in this case is best described as being trans-octahedral, with the two nitrate ligands coordinated practically perpendicular to one another. The complexes isolated from the reactions of lanthanide nitrate salts with the ligand bis(pentamethylene)urea (PMU) had the general formula Ln(PMU)3(NO3)3, where Ln = La – Dy, Yb, Lu. The complexes were found to be nine-coordinated with distorted trigonal prismatic geometry, in which the one base of the prism is composed of the oxygen atoms of the three PMU ligands and the other base is made up by one oxygen atom from each of the bidentate nitrate groups. The second oxygen atoms of each of the nitrate groups protrude upward, occupying capping positions. The reactions of the La and Pr nitrate salts with the ligand 2,2’-dipyridyl-N,N’-dioxide (DPDO) produced two novel complexes of the nature [Ln(DPDO)(H2O)2(NO3)3]. These complexes are remarkable in that their crystal structures reveal the Ln(III) centres to be ten-coordinated. The geometry around the Ln(III) centres was complex, due to the presence of a seven-membered chelate ring, formed by the bidentate coordination of the oxygen atoms from the DPDO ligands to the metal centres. The chelate ring did not lie in a single plane, but was twisted at the pyridyl bridgeheads to lie above and below the coordination plane.
- Full Text:
- Date Issued: 2012
- Authors: Kuhn, Kirsti
- Date: 2012
- Subjects: Chemical elements , Chemical reactions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10394 , http://hdl.handle.net/10948/d1009533 , Chemical elements , Chemical reactions
- Description: The reactions between the lanthanide nitrate salts and the ligand triphenylphosphine oxide (TPPO) gave rise to nine-coordinated complexes of the nature Ln(TPPO)3(NO3)3, for Ln = La – Dy, Er, Tm, in which the Ln(III) centre is coordinated to three phosphoryl oxygen atoms and three bidentate nitrate ligands. Generally, the geometry can be described as being mer-octahedral, where the nitrate ligands are considered as monoatomic species. The product of the reaction between Yb(NO3)3·5H2O and TPPO, however, was a highly symmetrical eight-coordinated complex, in which the Yb(III) centre was coordinated to two bidentate nitrate groups and four TPPO molecules. The geometry in this case is best described as being trans-octahedral, with the two nitrate ligands coordinated practically perpendicular to one another. The complexes isolated from the reactions of lanthanide nitrate salts with the ligand bis(pentamethylene)urea (PMU) had the general formula Ln(PMU)3(NO3)3, where Ln = La – Dy, Yb, Lu. The complexes were found to be nine-coordinated with distorted trigonal prismatic geometry, in which the one base of the prism is composed of the oxygen atoms of the three PMU ligands and the other base is made up by one oxygen atom from each of the bidentate nitrate groups. The second oxygen atoms of each of the nitrate groups protrude upward, occupying capping positions. The reactions of the La and Pr nitrate salts with the ligand 2,2’-dipyridyl-N,N’-dioxide (DPDO) produced two novel complexes of the nature [Ln(DPDO)(H2O)2(NO3)3]. These complexes are remarkable in that their crystal structures reveal the Ln(III) centres to be ten-coordinated. The geometry around the Ln(III) centres was complex, due to the presence of a seven-membered chelate ring, formed by the bidentate coordination of the oxygen atoms from the DPDO ligands to the metal centres. The chelate ring did not lie in a single plane, but was twisted at the pyridyl bridgeheads to lie above and below the coordination plane.
- Full Text:
- Date Issued: 2012
A study of the implementation of Employment Equity at the Engcobo Local Municipality
- Authors: Dweba, Thandeka
- Date: 2012
- Subjects: Affirmative action programs -- South Africa -- Eastern Cape , Discrimination in employment -- South Africa -- Eastern Cape , Labor laws and legislation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9426 , http://hdl.handle.net/10948/d1008410 , Affirmative action programs -- South Africa -- Eastern Cape , Discrimination in employment -- South Africa -- Eastern Cape , Labor laws and legislation -- South Africa -- Eastern Cape
- Description: Rationale: It cannot be denied that there has been improvement in demographic representation in South Africa since the implementation of the Employment Equity Act 55 of 1998. Whilst there may still be room for improvement, especially on employer attitudes towards the implementation of employment equity, improved representation of the Previously Disadvantaged Groups has evidently appreciated, however, marginally. Research purpose: This study sought to explore stakeholder perceptions as to why Engcobo Local Municipality had not successfully implemented the Employment Equity Act. Research design, approach and method: This exploratory study was conducted at Engcobo Local Municipality on Councillors, Managers, Key Employees and representatives of Organised Labour. Main findings: a) Engcobo Local Municipality was found not to have complied with various aspects of the Employment Equity Act; b) Respondents mainly believed that failure to implement the Employment Equity Act by Engcobo Local Municipality was due to lack of capacity on the part of the municipality‟s stakeholders; c) Different countries followed different models in the implementation of their Employment Equity, depending on the peculiarity of their circumstances; and d) The most appropriate change management model on which the implementation of the South African Employment Equity is modelled is Hayes‟ Generic Change Management Model. Managerial implications: Future research may be that the municipality can benefit from the recommendations made by the respondents with regard to what they believe needs to be done to remedy the situation. Some of the suggestions include the intensification of communication, establishment consultative structures to facilitate communication and the capacitation of stakeholders to ensure that they understand their responsibilities regarding the implementation of the Employment Equity Act. Contribution: The contribution of the research is supporting the current knowledge base of stakeholders towards the implementation of the Employment Equity Act. Proactive implementation measures should be taken to ensure that people who should benefit from the implementation of the Act are not disadvantaged by the municipality‟s failure to implement the Act. The introduction of the alignment with human resource management practices that complement the implementation of Employment Equity, could overcome the barriers currently being experienced in the effective implementation of the Employment Equity Act.
- Full Text:
- Date Issued: 2012
- Authors: Dweba, Thandeka
- Date: 2012
- Subjects: Affirmative action programs -- South Africa -- Eastern Cape , Discrimination in employment -- South Africa -- Eastern Cape , Labor laws and legislation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9426 , http://hdl.handle.net/10948/d1008410 , Affirmative action programs -- South Africa -- Eastern Cape , Discrimination in employment -- South Africa -- Eastern Cape , Labor laws and legislation -- South Africa -- Eastern Cape
- Description: Rationale: It cannot be denied that there has been improvement in demographic representation in South Africa since the implementation of the Employment Equity Act 55 of 1998. Whilst there may still be room for improvement, especially on employer attitudes towards the implementation of employment equity, improved representation of the Previously Disadvantaged Groups has evidently appreciated, however, marginally. Research purpose: This study sought to explore stakeholder perceptions as to why Engcobo Local Municipality had not successfully implemented the Employment Equity Act. Research design, approach and method: This exploratory study was conducted at Engcobo Local Municipality on Councillors, Managers, Key Employees and representatives of Organised Labour. Main findings: a) Engcobo Local Municipality was found not to have complied with various aspects of the Employment Equity Act; b) Respondents mainly believed that failure to implement the Employment Equity Act by Engcobo Local Municipality was due to lack of capacity on the part of the municipality‟s stakeholders; c) Different countries followed different models in the implementation of their Employment Equity, depending on the peculiarity of their circumstances; and d) The most appropriate change management model on which the implementation of the South African Employment Equity is modelled is Hayes‟ Generic Change Management Model. Managerial implications: Future research may be that the municipality can benefit from the recommendations made by the respondents with regard to what they believe needs to be done to remedy the situation. Some of the suggestions include the intensification of communication, establishment consultative structures to facilitate communication and the capacitation of stakeholders to ensure that they understand their responsibilities regarding the implementation of the Employment Equity Act. Contribution: The contribution of the research is supporting the current knowledge base of stakeholders towards the implementation of the Employment Equity Act. Proactive implementation measures should be taken to ensure that people who should benefit from the implementation of the Act are not disadvantaged by the municipality‟s failure to implement the Act. The introduction of the alignment with human resource management practices that complement the implementation of Employment Equity, could overcome the barriers currently being experienced in the effective implementation of the Employment Equity Act.
- Full Text:
- Date Issued: 2012