Strategies for retaining talented staff and knowledge managers : a case study
- Authors: Gatyeni, Litha
- Date: 2008
- Subjects: Employee retention -- South Africa , Employee motivation -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8710 , http://hdl.handle.net/10948/958 , Employee retention -- South Africa , Employee motivation -- South Africa
- Description: The South African government is currently targeting 6 per cent economic growth for the country (Mail & Guardian, 2006). The construction industry is one of the growing forces contributing to the current economic growth of South Africa. However, in the speech made by the president Thabo Mbeki, he highlighted the labour market as one of the key constraints to achieving higher and sustainable growth. It is believed that there is a skills shortage or a mismatch in the labour market (Mail & Guardian, 2006). The construction industry has seen a steady growth over the past number of years. When South Africa won the bid to host the 2010 world cup, this required more building work to be done, such as construction of stadia, hotels, etc. This has put further strain in the construction industry. As the work load increases, the companies in the industry require more resources, with the human resources being the most affected. This has seen a high rate of talented staff turnover in the industry as companies seek to increase their capacity to allow them cope with the current work load. The consulting engineering industry plays a critical role of the construction industry. The selected company is part of the electrical and mechanical consulting engineering industry which has also been affected by the high talented staff turnover. The main purpose for this research was to identify retention strategies that can be used by the selected company to reduce the turnover of their talented staff. The research also investigated methods to retain the knowledge within the company that was possibly lost due to a high talented staff turnover rate. The first step used to resolve the issues discussed above was to complete a full literature study. The literature study sought to reveal what characteristics were required in the company that ensured staff would be happy in that company and remain there for a long time. The literature study also covered what knowledge iv management methods can be used by the company to retain its valuable knowledge. Secondly, the views of current staff, ex-staff and management of the selected company on staff and knowledge management strategies were asked in an empirical study, which involved completing questionnaires and conducting structured interviews. Based on the findings of the literature study and the empirical study, the last step was to make recommendations on what strategies should be implemented to retain staff and knowledge for the selected company.
- Full Text:
- Date Issued: 2008
- Authors: Gatyeni, Litha
- Date: 2008
- Subjects: Employee retention -- South Africa , Employee motivation -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8710 , http://hdl.handle.net/10948/958 , Employee retention -- South Africa , Employee motivation -- South Africa
- Description: The South African government is currently targeting 6 per cent economic growth for the country (Mail & Guardian, 2006). The construction industry is one of the growing forces contributing to the current economic growth of South Africa. However, in the speech made by the president Thabo Mbeki, he highlighted the labour market as one of the key constraints to achieving higher and sustainable growth. It is believed that there is a skills shortage or a mismatch in the labour market (Mail & Guardian, 2006). The construction industry has seen a steady growth over the past number of years. When South Africa won the bid to host the 2010 world cup, this required more building work to be done, such as construction of stadia, hotels, etc. This has put further strain in the construction industry. As the work load increases, the companies in the industry require more resources, with the human resources being the most affected. This has seen a high rate of talented staff turnover in the industry as companies seek to increase their capacity to allow them cope with the current work load. The consulting engineering industry plays a critical role of the construction industry. The selected company is part of the electrical and mechanical consulting engineering industry which has also been affected by the high talented staff turnover. The main purpose for this research was to identify retention strategies that can be used by the selected company to reduce the turnover of their talented staff. The research also investigated methods to retain the knowledge within the company that was possibly lost due to a high talented staff turnover rate. The first step used to resolve the issues discussed above was to complete a full literature study. The literature study sought to reveal what characteristics were required in the company that ensured staff would be happy in that company and remain there for a long time. The literature study also covered what knowledge iv management methods can be used by the company to retain its valuable knowledge. Secondly, the views of current staff, ex-staff and management of the selected company on staff and knowledge management strategies were asked in an empirical study, which involved completing questionnaires and conducting structured interviews. Based on the findings of the literature study and the empirical study, the last step was to make recommendations on what strategies should be implemented to retain staff and knowledge for the selected company.
- Full Text:
- Date Issued: 2008
A comparison of WISC-IV test performance for Afrikaans, English and Xhosa speaking South African grade 7 learners
- Authors: Van der Merwe, Adele
- Date: 2008
- Subjects: Wechsler Intelligence Scale for Children Wechsler Adult Intelligence Scale Intelligence tests -- South Africa Psychological tests -- Cross-cultural studies Educational tests and measurements -- South Africa Educational psychology -- South Africa Language and languages -- Ability testing Educational evaluation -- South Africa Education, Elementary -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3076 , http://hdl.handle.net/10962/d1002585
- Description: his study builds on South African cross-cultural research which demonstrated the importance of careful stratification of multicultural/multilingual normative samples for quality of education in respect of English and African language (predominantly Xhosa) speaking adults and children tested with the WAIS-III and WISC-IV, respectively. The aim of the present study was to produce an expanded set of preliminary comparative norms on the WISC-IV for white and coloured Afrikaans, white English and black Xhosa speaking Grade 7 children, aged 12 to 13 years, stratified for advantaged versus disadvantaged education. The results of this study replicate the findings of the prior South African cross-cultural studies in respect of quality of education, as groups with advantaged private/former Model C schooling outperformed those with disadvantaged former DET or HOR township schooling. Furthermore, a downward continuum of WISC-IV IQ test performance emerged as follows: 1) white English advantaged (high average), 2) white Afrikaans advantaged and black Xhosa advantaged (average), 3) coloured Afrikaans advantaged (below average), 4) black Xhosa disadvantaged (borderline), and 5) coloured Afrikaans disadvantaged (extremely low). The present study has demonstrated that while language and ethnic variables reveal subtle effects on IQ test performance, quality of education has the most significant effect – impacting significantly on verbal performance with this effect replicated in respect of the FSIQ. Therefore caution should be exercised in interpreting test results of individuals from different language/ethnic groups, and in particular those with disadvantaged schooling, as preliminary data suggest that these individuals achieve scores which are 20 – 35 points lower than the UK standardisation.
- Full Text:
- Date Issued: 2008
- Authors: Van der Merwe, Adele
- Date: 2008
- Subjects: Wechsler Intelligence Scale for Children Wechsler Adult Intelligence Scale Intelligence tests -- South Africa Psychological tests -- Cross-cultural studies Educational tests and measurements -- South Africa Educational psychology -- South Africa Language and languages -- Ability testing Educational evaluation -- South Africa Education, Elementary -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3076 , http://hdl.handle.net/10962/d1002585
- Description: his study builds on South African cross-cultural research which demonstrated the importance of careful stratification of multicultural/multilingual normative samples for quality of education in respect of English and African language (predominantly Xhosa) speaking adults and children tested with the WAIS-III and WISC-IV, respectively. The aim of the present study was to produce an expanded set of preliminary comparative norms on the WISC-IV for white and coloured Afrikaans, white English and black Xhosa speaking Grade 7 children, aged 12 to 13 years, stratified for advantaged versus disadvantaged education. The results of this study replicate the findings of the prior South African cross-cultural studies in respect of quality of education, as groups with advantaged private/former Model C schooling outperformed those with disadvantaged former DET or HOR township schooling. Furthermore, a downward continuum of WISC-IV IQ test performance emerged as follows: 1) white English advantaged (high average), 2) white Afrikaans advantaged and black Xhosa advantaged (average), 3) coloured Afrikaans advantaged (below average), 4) black Xhosa disadvantaged (borderline), and 5) coloured Afrikaans disadvantaged (extremely low). The present study has demonstrated that while language and ethnic variables reveal subtle effects on IQ test performance, quality of education has the most significant effect – impacting significantly on verbal performance with this effect replicated in respect of the FSIQ. Therefore caution should be exercised in interpreting test results of individuals from different language/ethnic groups, and in particular those with disadvantaged schooling, as preliminary data suggest that these individuals achieve scores which are 20 – 35 points lower than the UK standardisation.
- Full Text:
- Date Issued: 2008
Retention of medical doctors in the public health sector: a case study of the Port Elizabeth Hospital complex
- Authors: Guvava, Dorothy Dorica
- Date: 2008
- Subjects: Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8221 , http://hdl.handle.net/10948/976 , Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Description: The Port Elizabeth (PE) hospital complex is one of the public hospital groups in South Africa facing a critical shortage of medical practitioners, with reference to doctors in particular. In the quest of finding how to retain doctors in the hospital complex, the aims of this research were to survey doctors’ career intentions; to investigate factors that could be contributing to these career intentions so as to uncover some of the reasons why doctors are leaving the public sector; and to identify effective ways in which the government and hospitals might improve retention by pointing out areas that need improvement. The factors that influence doctors’ career intention included income, work conditions, risk of contracting infection, risk of injury at work, hours of work, work load, work related stress, paid leave days, resources, personal growth and development opportunities, ongoing training opportunities, advancement and promotion opportunities, relation with co-workers, relations with supervisor/superiors, and sense of meaning. Findings revealed that even though the tendency to leave’ group (43%) was smaller than the ‘tendency to stay’ (57%), the majority (85%) of those who intended to leave were younger doctors. Despite some significant differences in responses between the two groups, results revealed that both groups were dissatisfied with almost all conditions of work apart from relationships with supervisors and co-workers. To a large extent, both groups revealed that work conditions are better in the private hospitals than in their current hospitals. viii The fact that some doctors could stay in the public hospital sector despite intense dissatisfaction with conditions of work, and despite the perception that that there are better options in the private hospitals could be attributed to the fact that most of these doctors are older and are at their retirement stage . Adding to this is that most of these doctors, who indicated willingness to say, scored high in sense of meaning as a factor influencing their career intention. This research was based on the assumption that there was no retention strategy put in place to solve the problems facing PE hospital complex. However, during this research a strategy was being developed and implemented by the Eastern Cape Department of Health. Therefore, evaluation and recommendations of the strategy are provided in the conclusions of the study. These recommendations relate not only to the implementation of the strategy, but improving it to accommodate all problems currently facing the doctors and finding ways and means of making the strategy sustainable; creating private-public partnerships; focusing on creating a sense of meaning amongst the doctors (especially the younger ones) and focusing on retaining the risk group which was the younger doctors.
- Full Text:
- Date Issued: 2008
- Authors: Guvava, Dorothy Dorica
- Date: 2008
- Subjects: Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8221 , http://hdl.handle.net/10948/976 , Employee retention -- Port Elizabeth -- South Africa , Physicians -- Job satisfaction -- South Africa -- Port Elizabeth , Hospitals -- South Africa -- Port Elizabeth
- Description: The Port Elizabeth (PE) hospital complex is one of the public hospital groups in South Africa facing a critical shortage of medical practitioners, with reference to doctors in particular. In the quest of finding how to retain doctors in the hospital complex, the aims of this research were to survey doctors’ career intentions; to investigate factors that could be contributing to these career intentions so as to uncover some of the reasons why doctors are leaving the public sector; and to identify effective ways in which the government and hospitals might improve retention by pointing out areas that need improvement. The factors that influence doctors’ career intention included income, work conditions, risk of contracting infection, risk of injury at work, hours of work, work load, work related stress, paid leave days, resources, personal growth and development opportunities, ongoing training opportunities, advancement and promotion opportunities, relation with co-workers, relations with supervisor/superiors, and sense of meaning. Findings revealed that even though the tendency to leave’ group (43%) was smaller than the ‘tendency to stay’ (57%), the majority (85%) of those who intended to leave were younger doctors. Despite some significant differences in responses between the two groups, results revealed that both groups were dissatisfied with almost all conditions of work apart from relationships with supervisors and co-workers. To a large extent, both groups revealed that work conditions are better in the private hospitals than in their current hospitals. viii The fact that some doctors could stay in the public hospital sector despite intense dissatisfaction with conditions of work, and despite the perception that that there are better options in the private hospitals could be attributed to the fact that most of these doctors are older and are at their retirement stage . Adding to this is that most of these doctors, who indicated willingness to say, scored high in sense of meaning as a factor influencing their career intention. This research was based on the assumption that there was no retention strategy put in place to solve the problems facing PE hospital complex. However, during this research a strategy was being developed and implemented by the Eastern Cape Department of Health. Therefore, evaluation and recommendations of the strategy are provided in the conclusions of the study. These recommendations relate not only to the implementation of the strategy, but improving it to accommodate all problems currently facing the doctors and finding ways and means of making the strategy sustainable; creating private-public partnerships; focusing on creating a sense of meaning amongst the doctors (especially the younger ones) and focusing on retaining the risk group which was the younger doctors.
- Full Text:
- Date Issued: 2008
No other world: the poetry of Don Maclennan
- Authors: Robinson, Brendon Kimbale
- Date: 2008
- Subjects: Maclennan, Don Maclennan, Don -- Criticism and interpretation South African poetry (English) -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2221 , http://hdl.handle.net/10962/d1002264
- Description: This is a study of the poetry of Don Maclennan in four chapters. Chapter One explores the poetry's deep involvement with the immediate world, and with the being that encounters it. Chapter Two examines the corpus's mistrust of abstract thought, and its suggestions for alternative ways of intepreting (or at least approaching an interpretation of) our existential situation. Chapter Three deals with Maclennan's writing on the subject of death, while the final chapter looks at the response of the poetry to the fact of death: put simply, this is to learn to love the situation we are in, and to record our thoughts for future generations, thus reaching beyond death to share with others the necessarily unique experience of our one and only life.
- Full Text:
- Date Issued: 2008
- Authors: Robinson, Brendon Kimbale
- Date: 2008
- Subjects: Maclennan, Don Maclennan, Don -- Criticism and interpretation South African poetry (English) -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2221 , http://hdl.handle.net/10962/d1002264
- Description: This is a study of the poetry of Don Maclennan in four chapters. Chapter One explores the poetry's deep involvement with the immediate world, and with the being that encounters it. Chapter Two examines the corpus's mistrust of abstract thought, and its suggestions for alternative ways of intepreting (or at least approaching an interpretation of) our existential situation. Chapter Three deals with Maclennan's writing on the subject of death, while the final chapter looks at the response of the poetry to the fact of death: put simply, this is to learn to love the situation we are in, and to record our thoughts for future generations, thus reaching beyond death to share with others the necessarily unique experience of our one and only life.
- Full Text:
- Date Issued: 2008
Absenteeism management at Willard Batteries
- Authors: Paul, Gary William
- Date: 2008
- Subjects: Absenteeism (Labor) -- Management , Absenteeism (Labor) -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9383 , http://hdl.handle.net/10948/896 , Absenteeism (Labor) -- Management , Absenteeism (Labor) -- South Africa
- Description: The main research problem in this study centred around the assessment of the impact of an absenteeism monitoring and management system at Willard Batteries. The main research problem had five sub-problems which were addressed through the following actions: A literature study was conducted to identify the causes and impact of absenteeism in the workplace. The researcher also conducted interviews with the Human Resources Manager, line managers and employees at Willard Batteries to obtain their views of the absenteeism management strategies utilised, as well as the effects of absenteeism in their organisation. The insights gained from these interviews were incorporated into the questionnaire. The absenteeism figures of the organisation for the period 2005 to 2008 were analysed and compared against the internationally accepted absenteeism norm of three percent. An absence rate above three percent is considered as unacceptable and would imply that the current absenteeism management system is not effective. The theoretical study also entailed the reviewing of the legal framework within which absenteeism needs to be managed, as well as the literature that deals with strategies for the effective management of absenteeism. These strategies relate to the recording, calculation, analysis, benchmarking and practical management of absenteeism in the workplace. A survey questionnaire was developed to determine the perceptions of managers, supervisors and employees in relation to the impact of absenteeism on the company as well as the extent to which managers and supervisors were utilising selected absenteeism monitoring and management strategies within the company. The results from the empirical study revealed that management and supervisors were more aware of the impact of absenteeism on the organisation than their employees. It can therefore be concluded that employees perceived their absence from work to have little impact on aspects such as employee morale, cost, production and the customer. This could possibly be due to ineffective communication in terms of the cost and other consequences of absenteeism in the organisation. Employees also felt that managers were effective in taking the necessary disciplinary action with regards to absenteeism-related transgressions, but that they were not diligent in the recording and communication of absence information, as well as comparing absenteeism information inter-departmentally. Absenteeism has proven to be globally pervasive, expensive and extremely disruptive to organisations. Managers and supervisors who employ the various absence monitoring and management strategies, could be more effective in improving employee attendance. Their efforts could be further enhanced if employees are made aware of the negative impact that their absence has on the morale of their fellow employees, the cost to the company, the customer, as well as the achievement of production targets and the quality of outputs.
- Full Text:
- Date Issued: 2008
- Authors: Paul, Gary William
- Date: 2008
- Subjects: Absenteeism (Labor) -- Management , Absenteeism (Labor) -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9383 , http://hdl.handle.net/10948/896 , Absenteeism (Labor) -- Management , Absenteeism (Labor) -- South Africa
- Description: The main research problem in this study centred around the assessment of the impact of an absenteeism monitoring and management system at Willard Batteries. The main research problem had five sub-problems which were addressed through the following actions: A literature study was conducted to identify the causes and impact of absenteeism in the workplace. The researcher also conducted interviews with the Human Resources Manager, line managers and employees at Willard Batteries to obtain their views of the absenteeism management strategies utilised, as well as the effects of absenteeism in their organisation. The insights gained from these interviews were incorporated into the questionnaire. The absenteeism figures of the organisation for the period 2005 to 2008 were analysed and compared against the internationally accepted absenteeism norm of three percent. An absence rate above three percent is considered as unacceptable and would imply that the current absenteeism management system is not effective. The theoretical study also entailed the reviewing of the legal framework within which absenteeism needs to be managed, as well as the literature that deals with strategies for the effective management of absenteeism. These strategies relate to the recording, calculation, analysis, benchmarking and practical management of absenteeism in the workplace. A survey questionnaire was developed to determine the perceptions of managers, supervisors and employees in relation to the impact of absenteeism on the company as well as the extent to which managers and supervisors were utilising selected absenteeism monitoring and management strategies within the company. The results from the empirical study revealed that management and supervisors were more aware of the impact of absenteeism on the organisation than their employees. It can therefore be concluded that employees perceived their absence from work to have little impact on aspects such as employee morale, cost, production and the customer. This could possibly be due to ineffective communication in terms of the cost and other consequences of absenteeism in the organisation. Employees also felt that managers were effective in taking the necessary disciplinary action with regards to absenteeism-related transgressions, but that they were not diligent in the recording and communication of absence information, as well as comparing absenteeism information inter-departmentally. Absenteeism has proven to be globally pervasive, expensive and extremely disruptive to organisations. Managers and supervisors who employ the various absence monitoring and management strategies, could be more effective in improving employee attendance. Their efforts could be further enhanced if employees are made aware of the negative impact that their absence has on the morale of their fellow employees, the cost to the company, the customer, as well as the achievement of production targets and the quality of outputs.
- Full Text:
- Date Issued: 2008
Sustainability assessment using a unit-based sustainability assessment tool: The case of three teaching departments at Rhodes University, South Africa
- Authors: Togo, Muchaiteyi
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/386863 , vital:68182 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122776"
- Description: A sustainability assessment study was performed with three teaching departments at Rhodes University – Ichthyology and Fisheries Science, Anthropology, and Accounting. The assessment used a Unit-based Sustainability Assessment Tool (USAT) and was guided by systems thinking and the ontological framework provided by critical realism. Results of the study showed that the Department of Ichthyology and Fisheries Science had a higher integration of sustainability issues in its activities than the other departments sampled, with Accounting having the lowest integration. Interviews conducted with departmental heads and content analyses of documents revealed differences in sustainability issues addressed and in approaches used in tackling them among these departments. The study is intended to inform the Mainstreaming of Environment and Sustainability in African (MESA) Universities Partnership, which promotes mainstreaming environment and sustainability in universities during the United Nations Decade of Education for Sustainable Development. The study does not provide answers to mainstreaming activities, but opens up space to debate and deliberate how to deal with the mainstreaming of sustainability in universities. It identified some of the challenges to be addressed in university-wide mainstreaming work, and affirmed the need for systems thinking in bringing about change at institutional level to extend changes taking place in individual teaching contexts.
- Full Text:
- Date Issued: 2008
- Authors: Togo, Muchaiteyi
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/386863 , vital:68182 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122776"
- Description: A sustainability assessment study was performed with three teaching departments at Rhodes University – Ichthyology and Fisheries Science, Anthropology, and Accounting. The assessment used a Unit-based Sustainability Assessment Tool (USAT) and was guided by systems thinking and the ontological framework provided by critical realism. Results of the study showed that the Department of Ichthyology and Fisheries Science had a higher integration of sustainability issues in its activities than the other departments sampled, with Accounting having the lowest integration. Interviews conducted with departmental heads and content analyses of documents revealed differences in sustainability issues addressed and in approaches used in tackling them among these departments. The study is intended to inform the Mainstreaming of Environment and Sustainability in African (MESA) Universities Partnership, which promotes mainstreaming environment and sustainability in universities during the United Nations Decade of Education for Sustainable Development. The study does not provide answers to mainstreaming activities, but opens up space to debate and deliberate how to deal with the mainstreaming of sustainability in universities. It identified some of the challenges to be addressed in university-wide mainstreaming work, and affirmed the need for systems thinking in bringing about change at institutional level to extend changes taking place in individual teaching contexts.
- Full Text:
- Date Issued: 2008
Nyokong wins Prestigious L'Oreal - Unesco Award for Woman in Science
- Authors: Peter, Kerry
- Language: English
- Type: Article
- Identifier: vital:7192 , http://hdl.handle.net/10962/d1006356
- Description: Rhodes University’s Professor Tebello Nyokong, has won the Africa-Arab State 2009 L’Oréal-Unesco Award for Women in Science for her pioneering research into photodynamic therapy which looks at harnessing light for cancer therapy and environmental clean-up. Nyokong is the third South African Scientist to receive this award, and reaffirms Rhodes’s place as one of the top research institutions in the country. University of Cape Town’s Professor Jennifer Thompson was previously recognised for her work on genetic engineering while Wits University’s Professor Valerie Mizrahi was recognised for her tuberculosis research.
- Full Text:
- Authors: Peter, Kerry
- Language: English
- Type: Article
- Identifier: vital:7192 , http://hdl.handle.net/10962/d1006356
- Description: Rhodes University’s Professor Tebello Nyokong, has won the Africa-Arab State 2009 L’Oréal-Unesco Award for Women in Science for her pioneering research into photodynamic therapy which looks at harnessing light for cancer therapy and environmental clean-up. Nyokong is the third South African Scientist to receive this award, and reaffirms Rhodes’s place as one of the top research institutions in the country. University of Cape Town’s Professor Jennifer Thompson was previously recognised for her work on genetic engineering while Wits University’s Professor Valerie Mizrahi was recognised for her tuberculosis research.
- Full Text:
Parasite prevalence, nutritionally-related blood metabolites and pre-slaughter stress response in Nguni, Bonsmara and Angus steers raised on veld
- Authors: Ndlovu, Thulile
- Date: 2008
- Subjects: Parasites , Nguni cattle , Bonsmara cattle , Metabolites , Slaughtering and slaughter-houses , Aberdeen -- Angus cattle
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11258 , http://hdl.handle.net/10353/73 , Parasites , Nguni cattle , Bonsmara cattle , Metabolites , Slaughtering and slaughter-houses , Aberdeen -- Angus cattle
- Description: The effects of month on body weight, body condition scores, internal parasite prevalence and on nutritionally related blood metabolites were studied in Angus, Bonsmara and Nguni steers raised on sweet veld. Pre-slaughter stress was also determined using catecholamines, cortisol, dopamine, packed cell volume and serum creatinine levels. The blood chemical constituents evaluated included glucose, cholesterol, total protein, creatinine, urea, globulin, albumin, calcium, phosphorus, magnesium, aspartate amino transferase (AST), alkaline phosphatase (ALP) and creatinine kinase (CK). The Nguni steers maintained their body condition throughout the study period whereas Angus steers had the least body condition scores. Parasite levels were high during the rainy season and low during the dry season. The predominant internal parasites were Haemonchus (39.3 percent), Trichostrongylus (37.8 percent), Cooperia pectinita (25.5 percent), Fasciola gigantica (16.3 percent) and Ostertagia ostertagi (11.2 percent). The Nguni had the least parasite infestation levels and had high PCV levels. Nguni had higher levels of cholesterol and glucose (2.86 and 4mmol/l, respectively) than the other two breeds. Nguni and Bonsmara steers had higher (P<0.05) mineral levels. There were significant breed and month differences for glucose, cholesterol, creatinine, calcium, albumin, phosphorus, albumin-globulin ratio and ALP levels. Bonsmara was more susceptible to transport and pre-slaughter stress as it had the highest (P<0.05) levels of adrenalin (10.8nmol/mol), noradrenalin (9.7nmol/mol) and dopamine (14.8nmol/mol) levels, whereas the Nguni had the least levels of adrenalin (6.5nmol/mol), noradrenalin (4.6nmol/mol) and dopamine (4nmol/mol) levels. In conclusion, Nguni steers were better adapted to the local environmental conditions
- Full Text:
- Date Issued: 2008
- Authors: Ndlovu, Thulile
- Date: 2008
- Subjects: Parasites , Nguni cattle , Bonsmara cattle , Metabolites , Slaughtering and slaughter-houses , Aberdeen -- Angus cattle
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11258 , http://hdl.handle.net/10353/73 , Parasites , Nguni cattle , Bonsmara cattle , Metabolites , Slaughtering and slaughter-houses , Aberdeen -- Angus cattle
- Description: The effects of month on body weight, body condition scores, internal parasite prevalence and on nutritionally related blood metabolites were studied in Angus, Bonsmara and Nguni steers raised on sweet veld. Pre-slaughter stress was also determined using catecholamines, cortisol, dopamine, packed cell volume and serum creatinine levels. The blood chemical constituents evaluated included glucose, cholesterol, total protein, creatinine, urea, globulin, albumin, calcium, phosphorus, magnesium, aspartate amino transferase (AST), alkaline phosphatase (ALP) and creatinine kinase (CK). The Nguni steers maintained their body condition throughout the study period whereas Angus steers had the least body condition scores. Parasite levels were high during the rainy season and low during the dry season. The predominant internal parasites were Haemonchus (39.3 percent), Trichostrongylus (37.8 percent), Cooperia pectinita (25.5 percent), Fasciola gigantica (16.3 percent) and Ostertagia ostertagi (11.2 percent). The Nguni had the least parasite infestation levels and had high PCV levels. Nguni had higher levels of cholesterol and glucose (2.86 and 4mmol/l, respectively) than the other two breeds. Nguni and Bonsmara steers had higher (P<0.05) mineral levels. There were significant breed and month differences for glucose, cholesterol, creatinine, calcium, albumin, phosphorus, albumin-globulin ratio and ALP levels. Bonsmara was more susceptible to transport and pre-slaughter stress as it had the highest (P<0.05) levels of adrenalin (10.8nmol/mol), noradrenalin (9.7nmol/mol) and dopamine (14.8nmol/mol) levels, whereas the Nguni had the least levels of adrenalin (6.5nmol/mol), noradrenalin (4.6nmol/mol) and dopamine (4nmol/mol) levels. In conclusion, Nguni steers were better adapted to the local environmental conditions
- Full Text:
- Date Issued: 2008
Confiscation orders in terms of the prevention of Organised Crime Act
- Authors: Juicy, Gavin Winston Bill
- Date: 2008
- Subjects: Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10169 , http://hdl.handle.net/10948/750 , Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Description: The Prevention of Organised Crime Act brought major changes to the South African criminal law context. Through the Act, major confiscatory provisions were established. The Act does not only target convicted criminals, but also any person who is in possession of tainted property that was used in the commission of offences. Civil forfeiture is the most widely used procedure in forfeiture proceedings. In the dissertation the effectiveness of criminal and civil confiscation is outlined. The historical development of confiscation and forfeiture provisions in South African is discussed with reference to the common law, legislation and international instruments and how international developments have influenced local development. This treatise consist of an overview of the confiscation provisions in the Prevention of Organised Act 121 of 1998 as one of the measures the South African legislature put in place to deal with organised crime. Since the Prevention of Organised Crime Act was passed, the courts have given meaning to what is an instrumentality of an offence and the proceeds of unlawful activities as a measure to counter organised crime. This treatise refers to those cases given the definition of an instrumentality of an offence and the proceeds of unlawful activities. For the purpose of effectively dealing with organised crime, this treatise contains a discussion on the effectiveness of criminal and civil confiscation procedure. The justification for asset forfeiture is outlined.
- Full Text:
- Date Issued: 2008
- Authors: Juicy, Gavin Winston Bill
- Date: 2008
- Subjects: Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10169 , http://hdl.handle.net/10948/750 , Forfeiture -- South Africa , Organized crime -- South Africa -- Prevention
- Description: The Prevention of Organised Crime Act brought major changes to the South African criminal law context. Through the Act, major confiscatory provisions were established. The Act does not only target convicted criminals, but also any person who is in possession of tainted property that was used in the commission of offences. Civil forfeiture is the most widely used procedure in forfeiture proceedings. In the dissertation the effectiveness of criminal and civil confiscation is outlined. The historical development of confiscation and forfeiture provisions in South African is discussed with reference to the common law, legislation and international instruments and how international developments have influenced local development. This treatise consist of an overview of the confiscation provisions in the Prevention of Organised Act 121 of 1998 as one of the measures the South African legislature put in place to deal with organised crime. Since the Prevention of Organised Crime Act was passed, the courts have given meaning to what is an instrumentality of an offence and the proceeds of unlawful activities as a measure to counter organised crime. This treatise refers to those cases given the definition of an instrumentality of an offence and the proceeds of unlawful activities. For the purpose of effectively dealing with organised crime, this treatise contains a discussion on the effectiveness of criminal and civil confiscation procedure. The justification for asset forfeiture is outlined.
- Full Text:
- Date Issued: 2008
A critique of dispute resolution in the public service
- Authors: Smith, Boy Siphiwo
- Date: 2008
- Subjects: Dispute resolution (Law) -- South Africa , Civil service -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10234 , http://hdl.handle.net/10948/754 , Dispute resolution (Law) -- South Africa , Civil service -- South Africa
- Description: Effective, efficient and expeditious resolution of labour disputes plays a crucial role in terms of the realization of one of the primary objectives of the Labour Relations Act (hereinafter referred to as “the Act”) which is the achievement of labour peace. Although there is no proper definition of a dispute offered by the Act, there are several elements raised by authors within the labour relations and labour law fields which constitute a dispute. Two types of disputes are discussed, namely disputes of right (emanating from entitlement) and disputes of interest (based on demands not provided for, and these are also known as disputes based on matters of mutual interests). Labour relations in South Africa has a history that is tarnished by segregation and dualism, where there was a system of labour relations and labour statutes for all races (except for Africans). The first statute dealing somewhat comprehensive with labour disputes, the Industrial Conciliation Act, did not apply to Africans. This situation (exclusion of Africans) prevailed until the early 1980’s. Therefore, although the apartheid system was legislated in 1948, its segregation practices based on race existed long before 1948 and also extended to the workplaces. The turning point in the labour relations arena in South Africa was the appointment of the Wiehahn Commission. As a result of the recommendations by this Commission, African Workers were for the first time included in labour legislation. So, of great interest is the fact that African Workers attained labour rights before the demise of the apartheid system. The birth of the Act with its dispute resolution fora like the Commission for Conciliation, Mediation and Arbitration (hereinafter referred to as “the CCMA”), Bargaining Councils, Labour Court and the Labour Appeal Court, revolutionized dispute resolution in the country. However, there are some challenges that have emerged even within the new system. Prior to 1993, labour relations in the public service, simply just did not exist. This was mainly due to the fact that the public service was excluded from mainstream legal framework governing labour relations. The State was very much in control of what was happening with regards to employment relations in the public service. There were some structures developed for engagement with the State like the Public Service Commission (PSC) which was politicized to push the agenda of apartheid, Public Servants Association (PSA) for White Public Servants, Public Service Union (PSU) for Indian Public Servants and Public Service League for Coloured Public Servants. There was no structure established for African Public Servants though. Nevertheless, these established structures were useless. One of the recommendations of the Wiehahn Commission was the inclusion of public servants within the mainstream labour relations framework and this was never pursued by the then government. It took the wave of strikes in the early 1990’s for the Act to be extended to the public service. Even with the inclusion of public service within the scope of the Act, there are still challenges pertinent to the public service. Central to these challenges is the problem of fragmentation in terms of approach regarding dispute resolution and the fact that there are too many pieces of legislation dealing with dispute resolution. This situation has also resulted in a jurisdictional debacle within the public service. Also, there is a huge challenge in terms of dealing with abscondments / desertion within the public service. In terms of the way forward, there is an initiative to streamline the public service. In this regard, there is a Draft Single Public Service Bill and also the Public Service Amendment Bill.
- Full Text:
- Date Issued: 2008
- Authors: Smith, Boy Siphiwo
- Date: 2008
- Subjects: Dispute resolution (Law) -- South Africa , Civil service -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10234 , http://hdl.handle.net/10948/754 , Dispute resolution (Law) -- South Africa , Civil service -- South Africa
- Description: Effective, efficient and expeditious resolution of labour disputes plays a crucial role in terms of the realization of one of the primary objectives of the Labour Relations Act (hereinafter referred to as “the Act”) which is the achievement of labour peace. Although there is no proper definition of a dispute offered by the Act, there are several elements raised by authors within the labour relations and labour law fields which constitute a dispute. Two types of disputes are discussed, namely disputes of right (emanating from entitlement) and disputes of interest (based on demands not provided for, and these are also known as disputes based on matters of mutual interests). Labour relations in South Africa has a history that is tarnished by segregation and dualism, where there was a system of labour relations and labour statutes for all races (except for Africans). The first statute dealing somewhat comprehensive with labour disputes, the Industrial Conciliation Act, did not apply to Africans. This situation (exclusion of Africans) prevailed until the early 1980’s. Therefore, although the apartheid system was legislated in 1948, its segregation practices based on race existed long before 1948 and also extended to the workplaces. The turning point in the labour relations arena in South Africa was the appointment of the Wiehahn Commission. As a result of the recommendations by this Commission, African Workers were for the first time included in labour legislation. So, of great interest is the fact that African Workers attained labour rights before the demise of the apartheid system. The birth of the Act with its dispute resolution fora like the Commission for Conciliation, Mediation and Arbitration (hereinafter referred to as “the CCMA”), Bargaining Councils, Labour Court and the Labour Appeal Court, revolutionized dispute resolution in the country. However, there are some challenges that have emerged even within the new system. Prior to 1993, labour relations in the public service, simply just did not exist. This was mainly due to the fact that the public service was excluded from mainstream legal framework governing labour relations. The State was very much in control of what was happening with regards to employment relations in the public service. There were some structures developed for engagement with the State like the Public Service Commission (PSC) which was politicized to push the agenda of apartheid, Public Servants Association (PSA) for White Public Servants, Public Service Union (PSU) for Indian Public Servants and Public Service League for Coloured Public Servants. There was no structure established for African Public Servants though. Nevertheless, these established structures were useless. One of the recommendations of the Wiehahn Commission was the inclusion of public servants within the mainstream labour relations framework and this was never pursued by the then government. It took the wave of strikes in the early 1990’s for the Act to be extended to the public service. Even with the inclusion of public service within the scope of the Act, there are still challenges pertinent to the public service. Central to these challenges is the problem of fragmentation in terms of approach regarding dispute resolution and the fact that there are too many pieces of legislation dealing with dispute resolution. This situation has also resulted in a jurisdictional debacle within the public service. Also, there is a huge challenge in terms of dealing with abscondments / desertion within the public service. In terms of the way forward, there is an initiative to streamline the public service. In this regard, there is a Draft Single Public Service Bill and also the Public Service Amendment Bill.
- Full Text:
- Date Issued: 2008
When commercial can also be community:
- Authors: du Toit, Peter , Rau, Asta
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159322 , vital:40287 , https://hdl.handle.net/10520/EJC140094
- Description: Questions of ownership, control and profit distribution are widely used to distinguish between commercial and community media ventures, but an over-reliance on such distinctions may eclipse other important considerations in a way that impacts negatively on media diversity.
- Full Text:
- Date Issued: 2008
- Authors: du Toit, Peter , Rau, Asta
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/159322 , vital:40287 , https://hdl.handle.net/10520/EJC140094
- Description: Questions of ownership, control and profit distribution are widely used to distinguish between commercial and community media ventures, but an over-reliance on such distinctions may eclipse other important considerations in a way that impacts negatively on media diversity.
- Full Text:
- Date Issued: 2008
Community development education: the integration of individual and collective consciousness for community well-being within a social development paradigm in South Africa
- Authors: Maistry, Savathrie
- Date: 2008
- Subjects: Community development -- South Africa , Social planning -- South Africa , Public welfare -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD (Development Studies)
- Identifier: vital:11754 , http://hdl.handle.net/10353/182 , Community development -- South Africa , Social planning -- South Africa , Public welfare -- South Africa
- Description: This study focused on community development education and practice for the democratic and transformative South context. Social and community development are relatively new approaches to social welfare and community development is emerging as a discipline and profession to contribute to the goal of developmental social welfare. Community work, albeit to a minimal extent and not community development was viewed as a method of social work during apartheid. With community development being prioritized as an intervention strategy for poverty reduction by the national government, the gap in community development education needs to be addressed. The goal of the study was to develop an undergraduate curriculum framework for community development education that would produce a new generation of ethical community development professionals to contribute to the goal of developmental social welfare. The study focused on the integrated approach to community development education and practice; with education of the student as a whole human being as critical for community development in a transformative South Africa. To achieve its goal, the study identified three themes that were critical to the research: a conceptual framework, clarifying key terms; a curriculum framework for community development education; and qualities and ethics for a new generation of development practitioners. The qualitative study was based in the Eastern Cape Province, South Africa and because of the lack of a referential framework for community development education, the researcher looked towards learning from India which has over fifty years of experience in social and community development education and practice. The state of Kerala established a social development approach in 1957 and was chosen as a learning experience. The state’s Kudumbashree Mission which aims at poverty alleviation through the empowerment of women was chosen as a case study. The integral and values based education system of Sri Sathya Sai University in the state of Andhra Pradesh and the community development education and practice of Loyola College in the state of Kerala were examined. The research design was exploratory, conceptual, descriptive and developmental in nature. The qualitative methodology best suited the nature of this study and a combination of methods to obtain data from a variety of sources across national boundaries was employed. The participants interviewed in both countries were purposively selected for their involvement in social and community development directly as target groups, practitioners, managers and policy makers. The research produced a philosophical and theoretical framework that is unitary and integral and aligned with the current social development policy to guide community development education and practice. The unitary and integral framework encompasses the individual within the family and community context and locates the various dimensions of development such as the social, physical, cultural, psychological, spiritual, political and economical dimensions within a unitary platform. The framework is dominated by the holistic and humanistic philosophies without negating the rational and pragmatic perspectives. In conclusion, the study conceptualizes community development as a natural process; the integration of individual and collective consciousness and an intervention. The outcome of the study is a recommended curriculum framework for community development education that would be of relevance to the Eastern Cape Province in particular and for the South African context generally.
- Full Text:
- Date Issued: 2008
- Authors: Maistry, Savathrie
- Date: 2008
- Subjects: Community development -- South Africa , Social planning -- South Africa , Public welfare -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD (Development Studies)
- Identifier: vital:11754 , http://hdl.handle.net/10353/182 , Community development -- South Africa , Social planning -- South Africa , Public welfare -- South Africa
- Description: This study focused on community development education and practice for the democratic and transformative South context. Social and community development are relatively new approaches to social welfare and community development is emerging as a discipline and profession to contribute to the goal of developmental social welfare. Community work, albeit to a minimal extent and not community development was viewed as a method of social work during apartheid. With community development being prioritized as an intervention strategy for poverty reduction by the national government, the gap in community development education needs to be addressed. The goal of the study was to develop an undergraduate curriculum framework for community development education that would produce a new generation of ethical community development professionals to contribute to the goal of developmental social welfare. The study focused on the integrated approach to community development education and practice; with education of the student as a whole human being as critical for community development in a transformative South Africa. To achieve its goal, the study identified three themes that were critical to the research: a conceptual framework, clarifying key terms; a curriculum framework for community development education; and qualities and ethics for a new generation of development practitioners. The qualitative study was based in the Eastern Cape Province, South Africa and because of the lack of a referential framework for community development education, the researcher looked towards learning from India which has over fifty years of experience in social and community development education and practice. The state of Kerala established a social development approach in 1957 and was chosen as a learning experience. The state’s Kudumbashree Mission which aims at poverty alleviation through the empowerment of women was chosen as a case study. The integral and values based education system of Sri Sathya Sai University in the state of Andhra Pradesh and the community development education and practice of Loyola College in the state of Kerala were examined. The research design was exploratory, conceptual, descriptive and developmental in nature. The qualitative methodology best suited the nature of this study and a combination of methods to obtain data from a variety of sources across national boundaries was employed. The participants interviewed in both countries were purposively selected for their involvement in social and community development directly as target groups, practitioners, managers and policy makers. The research produced a philosophical and theoretical framework that is unitary and integral and aligned with the current social development policy to guide community development education and practice. The unitary and integral framework encompasses the individual within the family and community context and locates the various dimensions of development such as the social, physical, cultural, psychological, spiritual, political and economical dimensions within a unitary platform. The framework is dominated by the holistic and humanistic philosophies without negating the rational and pragmatic perspectives. In conclusion, the study conceptualizes community development as a natural process; the integration of individual and collective consciousness and an intervention. The outcome of the study is a recommended curriculum framework for community development education that would be of relevance to the Eastern Cape Province in particular and for the South African context generally.
- Full Text:
- Date Issued: 2008
Electrocatalytic and photosensitizing behavior of metallophthalocyanine complexes
- Authors: Nyokong, Tebello
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/265908 , vital:53899 , xlink:href="https://doi.org/10.1142/S1088424608000388"
- Description: Electrocatalytic or photosensitizing (photocatalytic) properties of metallophthalocyanine (MPc) complexes are dependent on the central metal. Electrocatalytic behavior is observed for electroactive central metals such as Co, Mn and Fe, whereas photosensitizing behavior is observed for diamagnetic metals such as Al, Zn and Si. In the presence of nanoparticles such as quantum dots, the photosensitizing behavior of MPc complexes is improved. Carbon nanotubes enhance the electrocatalytic behavior of MPc complexes.
- Full Text:
- Date Issued: 2008
- Authors: Nyokong, Tebello
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/265908 , vital:53899 , xlink:href="https://doi.org/10.1142/S1088424608000388"
- Description: Electrocatalytic or photosensitizing (photocatalytic) properties of metallophthalocyanine (MPc) complexes are dependent on the central metal. Electrocatalytic behavior is observed for electroactive central metals such as Co, Mn and Fe, whereas photosensitizing behavior is observed for diamagnetic metals such as Al, Zn and Si. In the presence of nanoparticles such as quantum dots, the photosensitizing behavior of MPc complexes is improved. Carbon nanotubes enhance the electrocatalytic behavior of MPc complexes.
- Full Text:
- Date Issued: 2008
The distinction between tax evasion, tax avoidance and tax planning
- Authors: Tarrant, Greg
- Date: 2008
- Subjects: South African Revenue Service , Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- South Africa , Income tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:897 , http://hdl.handle.net/10962/d1004549
- Description: Tax avoidance has been the subject of intense scrutiny lately by both the South African Revenue Service ("the SARS") and the media. This attention stems largely from the recent withdrawal of section 103(1) together with the introduction of section 80A to 80L of the South African Income Tax Act. However, this attention is not limited to South Africa. Revenue authorities worldwide have focused on the task of challenging tax avoidance. The approach of the SARS to tackling tax avoidance has been multi-faceted. In the Discussion Paper on Tax Avoidance and Section 103 (1) of the South African Income Tax Act they begin with a review of the distinction between tax evasion, tax avoidance and tax planning. Following a call for comment the SARS issued an Interim Response followed by the Revised Proposals which culminated in the withdrawal of the longstanding general anti-avoidance rules housed in section 103(1) and the introduction of new and more comprehensive anti-avoidance rules. In addition, the SARS has adopted an ongoing media campaign stressing the importance of paying tax in a country with a large development agenda like that of South Africa, the need for taxpayers to adopt a responsible attitude to the management of tax and the inclusion of responsible tax management as the greatest measure of a taxpayer's corporate and social investment. In tandem with this message the SARS have sought to vilify those taxpayers who engage in tax avoidance. The message is clear: tax avoidance carries reputational risks; those who engage in tax avoidance are unpatriotic or immoral and their actions simply result in an unfair shifting of the tax burden. The SARS is not alone in the above approach. Around the world tax authorities have been echoing the same message. The message appears to be working. Accounting firms speak of a "creeping conservatism" that has pervaded company boardrooms. What is not clear, however, is whether taxpayers, in becoming more conservative, are simply more fully aware of tax risks and are making informed decisions or whether they are simply responding to external events, such as the worldwide focus by revenue authorities and the media on tax avoidance. Whatever the reason, it is now critical, particularly in the case of corporate taxpayers, that their policies for tax and its attendant risks need to be as sophisticated, coherent and transparent as its policies in all other areas involving multiple stakeholders, such as suppliers, customers, staff and investors. How does a company begin to set its tax philosophy and strategic direction or to determine its appetite for risk? A starting point, it is submitted would be a review of the distinction between tax evasion, avoidance and planning with a heightened sensitivity to the unfamiliar ethical, moral and social risks. The goal of this thesis was to clearly define the distinction between tax evasion, tax avoidance and tax planning from a legal interpretive, ethical and historical perspective in order to develop a rudimentary framework for the responsible management of strategic tax decisions, in the light of the new South African general anti-avoidance legislation. The research methodology entails a qualitative research orientation consisting of a critical conceptual analysis of tax evasion and tax avoidance, with a view to establishing a basic framework to be used by taxpayers to make informed decisions on tax matters. The analysis of the distinction in this work culminated in a diagrammatic representation of the distinction between tax evasion, tax avoidance and tax planning emphasising the different types of tax avoidance from least aggressive to the most abusive and from the least objectionable to most objectionable. It is anticipated that a visual representation of the distinction, however flawed, would result in a far more pragmatic tool to taxpayers than a lengthy document. From a glance taxpayers can determine the following: That tax avoidance is legal; that different forms of tax avoidance exist, some forms being more aggressive than others; that aggressive forms of tax avoidance carry reputational risks; and that in certain circumstances aggressive tax avoidance schemes may border on tax evasion. This, it is envisaged, may prompt taxpayers to ask the right questions when faced with an external or in-house tax avoidance arrangement rather than simply blindly accepting or rejecting the arrangement.
- Full Text:
- Date Issued: 2008
- Authors: Tarrant, Greg
- Date: 2008
- Subjects: South African Revenue Service , Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- South Africa , Income tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:897 , http://hdl.handle.net/10962/d1004549
- Description: Tax avoidance has been the subject of intense scrutiny lately by both the South African Revenue Service ("the SARS") and the media. This attention stems largely from the recent withdrawal of section 103(1) together with the introduction of section 80A to 80L of the South African Income Tax Act. However, this attention is not limited to South Africa. Revenue authorities worldwide have focused on the task of challenging tax avoidance. The approach of the SARS to tackling tax avoidance has been multi-faceted. In the Discussion Paper on Tax Avoidance and Section 103 (1) of the South African Income Tax Act they begin with a review of the distinction between tax evasion, tax avoidance and tax planning. Following a call for comment the SARS issued an Interim Response followed by the Revised Proposals which culminated in the withdrawal of the longstanding general anti-avoidance rules housed in section 103(1) and the introduction of new and more comprehensive anti-avoidance rules. In addition, the SARS has adopted an ongoing media campaign stressing the importance of paying tax in a country with a large development agenda like that of South Africa, the need for taxpayers to adopt a responsible attitude to the management of tax and the inclusion of responsible tax management as the greatest measure of a taxpayer's corporate and social investment. In tandem with this message the SARS have sought to vilify those taxpayers who engage in tax avoidance. The message is clear: tax avoidance carries reputational risks; those who engage in tax avoidance are unpatriotic or immoral and their actions simply result in an unfair shifting of the tax burden. The SARS is not alone in the above approach. Around the world tax authorities have been echoing the same message. The message appears to be working. Accounting firms speak of a "creeping conservatism" that has pervaded company boardrooms. What is not clear, however, is whether taxpayers, in becoming more conservative, are simply more fully aware of tax risks and are making informed decisions or whether they are simply responding to external events, such as the worldwide focus by revenue authorities and the media on tax avoidance. Whatever the reason, it is now critical, particularly in the case of corporate taxpayers, that their policies for tax and its attendant risks need to be as sophisticated, coherent and transparent as its policies in all other areas involving multiple stakeholders, such as suppliers, customers, staff and investors. How does a company begin to set its tax philosophy and strategic direction or to determine its appetite for risk? A starting point, it is submitted would be a review of the distinction between tax evasion, avoidance and planning with a heightened sensitivity to the unfamiliar ethical, moral and social risks. The goal of this thesis was to clearly define the distinction between tax evasion, tax avoidance and tax planning from a legal interpretive, ethical and historical perspective in order to develop a rudimentary framework for the responsible management of strategic tax decisions, in the light of the new South African general anti-avoidance legislation. The research methodology entails a qualitative research orientation consisting of a critical conceptual analysis of tax evasion and tax avoidance, with a view to establishing a basic framework to be used by taxpayers to make informed decisions on tax matters. The analysis of the distinction in this work culminated in a diagrammatic representation of the distinction between tax evasion, tax avoidance and tax planning emphasising the different types of tax avoidance from least aggressive to the most abusive and from the least objectionable to most objectionable. It is anticipated that a visual representation of the distinction, however flawed, would result in a far more pragmatic tool to taxpayers than a lengthy document. From a glance taxpayers can determine the following: That tax avoidance is legal; that different forms of tax avoidance exist, some forms being more aggressive than others; that aggressive forms of tax avoidance carry reputational risks; and that in certain circumstances aggressive tax avoidance schemes may border on tax evasion. This, it is envisaged, may prompt taxpayers to ask the right questions when faced with an external or in-house tax avoidance arrangement rather than simply blindly accepting or rejecting the arrangement.
- Full Text:
- Date Issued: 2008
Novel camphor derivatives as potential asymmetric alkylation auxiliaries
- Authors: Skiti-Mama, Neliswa
- Date: 2008
- Subjects: Alkylation , Chemistry, Organic
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10372 , http://hdl.handle.net/10948/1077 , Alkylation , Chemistry, Organic
- Description: The investigation has been focussed on the synthesis and characterisation of camphor-derived chiral auxiliaries that incorporate two camphor skeletons and an evaluation of their stereodirecting potential in ester α-benzylation reactions. Two regioisomeric camphorquinone-derived monoketals were synthesised and identified by 1D- and 2D-NMR, and X-ray crystallography. The stereo-directing potential of the alcohols that resulted from reduction of these ketones as chiral auxiliaries in the alkylation of carboxylate ester derivatives has been studied. The diastereoselectivities shown by NMR spectroscopy range from 14- 30 % d.e. for (1R,2 S, 3R) -2 ,2-[ (1R, 2 S, 3R) -bornane-2,3-dioxy] - bornan-3-ol and 68-74 % d.e. for (1R, 2S ,3R) -3 ,3-[ (1R, 2S ,3R) - bornane-2, 3 -dioxy]bornan-2-ol with selectivities that correlate with the size of the alkyl group in the ester moiety. Trapping of the enolates generated from (1R, 2S ,3R)-2, 2 -[(1R,2 S, 3R) -bornane- 2,3-dioxy]bornan-3-yl propanoate afforded both E- and Z-silyl ketene acetal derivatives in the ratio of 64:36 confirming the formation of both possible enolate structures during enolization. Chiral auxiliaries containing a hemiaminal ether blocking group as well as two chiral alcohols containing monothio-ketal blocking groups have also been synthesised. α-Benzylation of their corresponding propanoate esters afforded the alkylated product with disappointingly low diastereos electivities. Asymmetric reduction of α-keto esters attached to (1R, 2 S, 3R) - 2,2- [ (1R,2 S, 3R) -bornane-2, 3 -dioxy]bornan-3-ol and (1R, 2S ,3R) - 3,3- [ (1R,2 S, 3R) -bornane-2, 3 -dioxy]bornan-2-ol with metal hydrides proceeded with selectivities of up to 30 % d.e. Modelling of the keto ester derivatives at DFT levels provided useful insights into possible conformations adopted by the two α-keto esters and hence the preferred face of attack by metal hydride during reduction.
- Full Text:
- Date Issued: 2008
- Authors: Skiti-Mama, Neliswa
- Date: 2008
- Subjects: Alkylation , Chemistry, Organic
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10372 , http://hdl.handle.net/10948/1077 , Alkylation , Chemistry, Organic
- Description: The investigation has been focussed on the synthesis and characterisation of camphor-derived chiral auxiliaries that incorporate two camphor skeletons and an evaluation of their stereodirecting potential in ester α-benzylation reactions. Two regioisomeric camphorquinone-derived monoketals were synthesised and identified by 1D- and 2D-NMR, and X-ray crystallography. The stereo-directing potential of the alcohols that resulted from reduction of these ketones as chiral auxiliaries in the alkylation of carboxylate ester derivatives has been studied. The diastereoselectivities shown by NMR spectroscopy range from 14- 30 % d.e. for (1R,2 S, 3R) -2 ,2-[ (1R, 2 S, 3R) -bornane-2,3-dioxy] - bornan-3-ol and 68-74 % d.e. for (1R, 2S ,3R) -3 ,3-[ (1R, 2S ,3R) - bornane-2, 3 -dioxy]bornan-2-ol with selectivities that correlate with the size of the alkyl group in the ester moiety. Trapping of the enolates generated from (1R, 2S ,3R)-2, 2 -[(1R,2 S, 3R) -bornane- 2,3-dioxy]bornan-3-yl propanoate afforded both E- and Z-silyl ketene acetal derivatives in the ratio of 64:36 confirming the formation of both possible enolate structures during enolization. Chiral auxiliaries containing a hemiaminal ether blocking group as well as two chiral alcohols containing monothio-ketal blocking groups have also been synthesised. α-Benzylation of their corresponding propanoate esters afforded the alkylated product with disappointingly low diastereos electivities. Asymmetric reduction of α-keto esters attached to (1R, 2 S, 3R) - 2,2- [ (1R,2 S, 3R) -bornane-2, 3 -dioxy]bornan-3-ol and (1R, 2S ,3R) - 3,3- [ (1R,2 S, 3R) -bornane-2, 3 -dioxy]bornan-2-ol with metal hydrides proceeded with selectivities of up to 30 % d.e. Modelling of the keto ester derivatives at DFT levels provided useful insights into possible conformations adopted by the two α-keto esters and hence the preferred face of attack by metal hydride during reduction.
- Full Text:
- Date Issued: 2008
Resilience in HIV/AIDS' adolescent headed families
- Authors: Beeka, Hershilla A
- Date: 2008
- Subjects: Resilience (Personality trait) in adolescence -- South Africa -- Port Elizabeth , Children of AIDS patients -- South Africa -- Family relationships , Families, Black -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9911 , http://hdl.handle.net/10948/922 , Resilience (Personality trait) in adolescence -- South Africa -- Port Elizabeth , Children of AIDS patients -- South Africa -- Family relationships , Families, Black -- Research -- South Africa
- Description: HIV/AIDS has presented humanity with various challenges, one of which is the manner in which it has affected family structure and patterns. Parental illness and eventual death due to the HIV/AIDS pandemic is escalating. One of the major challenges of HIV/AIDS in southern Africa is the increase in the number of orphaned and vulnerable children. As a result new family forms are emerging such as the "skip-generation" family in which children or adolescent siblings head the family. It is anticipated that HIV/AIDS in South Africa will progressively increase the number of such families. During this time of profound family change, the family as an institution has remained remarkably resilient. The present study utilised the Family Resilience Framework and the Resiliency Model of Family Stress, Adjustment and Adaptation to explore and describe the resilience of HIV/AIDS’ adolescent headed families. A qualitative, exploratory-descriptive research design, which was assessed against Guba’s (1985) model of trustworthiness, was employed and the participants were sampled using non-probability purposive sampling. The Masizakhe Community Project volunteers (an AIDS Community Project in Kwazakhele, Port Elizabeth receiving support from the iThemba AIDS Foundation) assisted in identifying participants according to the predetermined inclusion criteria. The sample consisted of four female, adolescent heads of HIV/AIDS’ affected households, who volunteered at the Masizakhe Community Project and resided in Kwazakhele. The data that was collected via audio-recorded semi structured interviews were transcribed verbatim and subjected to Interpretive Phenomenological Analysis. Family resilience factors that emerged included intrafamilial strengths (family cohesion, organisation, hardiness, and adaptability); social support resources (especially from the community project, friends, and community members); family appraisal processes; and problem solving and coping strategies. Extended family support was partial and largely financial. The findings from this study provided insights into the resilience of adolescent-headed families; provided guidance for the development of intervention programmes to assist these families; and affirmed the existing strengths of the families. Furthermore, it has contributed to the research and literature on family resilience and formed the foundation for future research projects.
- Full Text:
- Date Issued: 2008
- Authors: Beeka, Hershilla A
- Date: 2008
- Subjects: Resilience (Personality trait) in adolescence -- South Africa -- Port Elizabeth , Children of AIDS patients -- South Africa -- Family relationships , Families, Black -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9911 , http://hdl.handle.net/10948/922 , Resilience (Personality trait) in adolescence -- South Africa -- Port Elizabeth , Children of AIDS patients -- South Africa -- Family relationships , Families, Black -- Research -- South Africa
- Description: HIV/AIDS has presented humanity with various challenges, one of which is the manner in which it has affected family structure and patterns. Parental illness and eventual death due to the HIV/AIDS pandemic is escalating. One of the major challenges of HIV/AIDS in southern Africa is the increase in the number of orphaned and vulnerable children. As a result new family forms are emerging such as the "skip-generation" family in which children or adolescent siblings head the family. It is anticipated that HIV/AIDS in South Africa will progressively increase the number of such families. During this time of profound family change, the family as an institution has remained remarkably resilient. The present study utilised the Family Resilience Framework and the Resiliency Model of Family Stress, Adjustment and Adaptation to explore and describe the resilience of HIV/AIDS’ adolescent headed families. A qualitative, exploratory-descriptive research design, which was assessed against Guba’s (1985) model of trustworthiness, was employed and the participants were sampled using non-probability purposive sampling. The Masizakhe Community Project volunteers (an AIDS Community Project in Kwazakhele, Port Elizabeth receiving support from the iThemba AIDS Foundation) assisted in identifying participants according to the predetermined inclusion criteria. The sample consisted of four female, adolescent heads of HIV/AIDS’ affected households, who volunteered at the Masizakhe Community Project and resided in Kwazakhele. The data that was collected via audio-recorded semi structured interviews were transcribed verbatim and subjected to Interpretive Phenomenological Analysis. Family resilience factors that emerged included intrafamilial strengths (family cohesion, organisation, hardiness, and adaptability); social support resources (especially from the community project, friends, and community members); family appraisal processes; and problem solving and coping strategies. Extended family support was partial and largely financial. The findings from this study provided insights into the resilience of adolescent-headed families; provided guidance for the development of intervention programmes to assist these families; and affirmed the existing strengths of the families. Furthermore, it has contributed to the research and literature on family resilience and formed the foundation for future research projects.
- Full Text:
- Date Issued: 2008
Process for the preparation of cis- AND trans-3,7-Dimethyl 2,6-Octadiene-1-OL from crude sulphated turpentine stream
- Sathikge, Ndavheleseni David
- Authors: Sathikge, Ndavheleseni David
- Date: 2008
- Subjects: Turpentine , Sulfate waste liquor , Wood-pulp industry -- By-products
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10398 , http://hdl.handle.net/10948/734 , Turpentine , Sulfate waste liquor , Wood-pulp industry -- By-products
- Description: As part of CSIR Biosciences’ interest in aroma chemicals, the processing of crude sulphated turpentine (CST) into high value aroma products was investigated. The primary target product, linalool, was obtained from a mixture of α- and β-pinene in four steps. It can be transformed into a wide range of high value added aroma chemicals. Isomerisation of linalool in the presence of a transition metal catalyst furnishes geraniol and nerol. The scientific work described in this report was part of a bigger project aimed at developing innovative processes to manufacture aroma, flavour & fragrance chemicals through beneficiation of industrial waste streams and other raw materials, available locally from the Forestry, Paper & Pulp industries. The evaluation of a process for the preparation of precursor aroma, flavour & fragrance compounds, in particular geraniol and nerol, from locally available raw materials and industrial waste streams, was investigated. Preparation of geraniol and nerol from linalool (ex α-pinene stream) was investigated using acids or organometallic complexes as catalysts for the corresponding isomerisation reaction. The investigation was conducted in an effort to find a less costly process utilising milder conditions than via the conventional cleavage of β-pinene to myrcene under extreme pyrolysis conditions (>650°C). The transformation of linalool to geraniol/nerol using mineral acids was found to be dominated by secondary reactions such as dehydration and cyclisation, resulting in poor product selectivities and yields. On the other hand, organometallic complexes, in particular vanadium-based complexes (e.g. (OV(OBu)3) produced satisfactory results in the preliminary assessment (conversion of 79.8 percent and selectivity of 98.3 percent). A set of statistically designed experiments was carried out on the (VO(BuO)3 + [(Bu)4N+]OH¯) catalyst system where three variables were tested, i.e. substrate concentration, temperature, and catalyst loading. The selected model for conversion was significant with the “Probability > F” being < 0.0001. The most important contributing variable to the model for conversion was temperature i.e. 83.9 percent. Temperature was still the most important variable for the selectivity response at 65.0 percent contribution level. The response surface generated for the selectivity response was flat indicating a robust method within the parameter range selected.
- Full Text:
- Date Issued: 2008
- Authors: Sathikge, Ndavheleseni David
- Date: 2008
- Subjects: Turpentine , Sulfate waste liquor , Wood-pulp industry -- By-products
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10398 , http://hdl.handle.net/10948/734 , Turpentine , Sulfate waste liquor , Wood-pulp industry -- By-products
- Description: As part of CSIR Biosciences’ interest in aroma chemicals, the processing of crude sulphated turpentine (CST) into high value aroma products was investigated. The primary target product, linalool, was obtained from a mixture of α- and β-pinene in four steps. It can be transformed into a wide range of high value added aroma chemicals. Isomerisation of linalool in the presence of a transition metal catalyst furnishes geraniol and nerol. The scientific work described in this report was part of a bigger project aimed at developing innovative processes to manufacture aroma, flavour & fragrance chemicals through beneficiation of industrial waste streams and other raw materials, available locally from the Forestry, Paper & Pulp industries. The evaluation of a process for the preparation of precursor aroma, flavour & fragrance compounds, in particular geraniol and nerol, from locally available raw materials and industrial waste streams, was investigated. Preparation of geraniol and nerol from linalool (ex α-pinene stream) was investigated using acids or organometallic complexes as catalysts for the corresponding isomerisation reaction. The investigation was conducted in an effort to find a less costly process utilising milder conditions than via the conventional cleavage of β-pinene to myrcene under extreme pyrolysis conditions (>650°C). The transformation of linalool to geraniol/nerol using mineral acids was found to be dominated by secondary reactions such as dehydration and cyclisation, resulting in poor product selectivities and yields. On the other hand, organometallic complexes, in particular vanadium-based complexes (e.g. (OV(OBu)3) produced satisfactory results in the preliminary assessment (conversion of 79.8 percent and selectivity of 98.3 percent). A set of statistically designed experiments was carried out on the (VO(BuO)3 + [(Bu)4N+]OH¯) catalyst system where three variables were tested, i.e. substrate concentration, temperature, and catalyst loading. The selected model for conversion was significant with the “Probability > F” being < 0.0001. The most important contributing variable to the model for conversion was temperature i.e. 83.9 percent. Temperature was still the most important variable for the selectivity response at 65.0 percent contribution level. The response surface generated for the selectivity response was flat indicating a robust method within the parameter range selected.
- Full Text:
- Date Issued: 2008
Pilates for postural stability in computer users
- Authors: Strydom, Lana
- Date: 2008
- Subjects: Pilates method , Human beings -- Attitude and movement
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10094 , http://hdl.handle.net/10948/867 , Pilates method , Human beings -- Attitude and movement
- Description: The impact of computer use is evident in every day life (Harrington, Carter, Birrell and Gompertz, 2000:264). Lind (2002:18) explains that global trends continue to show that the most severe work-related health problems that exist amongst computer users are musculoskeletal disorders. As technology has lead to increases in automation, so it has lead to increases in work-related illnesses. Although studies have explored the effects of ergonomics (Thibodeau, 1995:322) in static working positions there has been little evidence supporting a solution in overcoming poor occupational postures. Many health practitioners argue that occupationally caused, or aggravated, musculoskeletal disorders are steadily increasing. Thus, even though computers have improved productivity and made work easier for the population in general, they have adverse effects as well. Designing the proper tools or a setup of the work place is of prime importance for the elimination of chronic diseases attributed to sedentary lifestyles. Regular physical activity had long been regarded as an important component of a healthy lifestyle. This notion has recently been reinforced by scientific evidence linking regular physical activity with a wide array of physical and mental health benefits, synonymous with an improvement in wellness (Pratt, Macera, and Wang, 2000:63). According to Pratt et al. (2000:63) higher direct medical costs associates with physical inactivity. Further cross-sectional epidemiologic studies and controlled experimental investigations conducted by Okura, Nakata and Tanaka (2003:1131) had demonstrated that physically active adults, in contrast to their sedentary counterparts, tend to develop and maintain higher levels of physical fitness. These studies had not only demonstrated the positive results of physical activity, such as an improvement in blood lipid profile, body composition, glucose tolerance and insulin sensitivity, but had also shown that participation in such activity decreased the risk of developing several chronic hypokinetic diseases, including coronary heart disease (CHD), hypertension, non-insulin dependant diabetes mellitus (type II), osteoporosis, colon cancer, anxiety and depression. In addition, low levels of habitual physical activity and the subsequent low levels of physical fitness were associated with a marked increase in all-cause mortality rates. Okura et al. (2003:1131) confirm that effects of exercise intensity on physical fitness and risk factors for coronary Herat disease.
- Full Text:
- Date Issued: 2008
- Authors: Strydom, Lana
- Date: 2008
- Subjects: Pilates method , Human beings -- Attitude and movement
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10094 , http://hdl.handle.net/10948/867 , Pilates method , Human beings -- Attitude and movement
- Description: The impact of computer use is evident in every day life (Harrington, Carter, Birrell and Gompertz, 2000:264). Lind (2002:18) explains that global trends continue to show that the most severe work-related health problems that exist amongst computer users are musculoskeletal disorders. As technology has lead to increases in automation, so it has lead to increases in work-related illnesses. Although studies have explored the effects of ergonomics (Thibodeau, 1995:322) in static working positions there has been little evidence supporting a solution in overcoming poor occupational postures. Many health practitioners argue that occupationally caused, or aggravated, musculoskeletal disorders are steadily increasing. Thus, even though computers have improved productivity and made work easier for the population in general, they have adverse effects as well. Designing the proper tools or a setup of the work place is of prime importance for the elimination of chronic diseases attributed to sedentary lifestyles. Regular physical activity had long been regarded as an important component of a healthy lifestyle. This notion has recently been reinforced by scientific evidence linking regular physical activity with a wide array of physical and mental health benefits, synonymous with an improvement in wellness (Pratt, Macera, and Wang, 2000:63). According to Pratt et al. (2000:63) higher direct medical costs associates with physical inactivity. Further cross-sectional epidemiologic studies and controlled experimental investigations conducted by Okura, Nakata and Tanaka (2003:1131) had demonstrated that physically active adults, in contrast to their sedentary counterparts, tend to develop and maintain higher levels of physical fitness. These studies had not only demonstrated the positive results of physical activity, such as an improvement in blood lipid profile, body composition, glucose tolerance and insulin sensitivity, but had also shown that participation in such activity decreased the risk of developing several chronic hypokinetic diseases, including coronary heart disease (CHD), hypertension, non-insulin dependant diabetes mellitus (type II), osteoporosis, colon cancer, anxiety and depression. In addition, low levels of habitual physical activity and the subsequent low levels of physical fitness were associated with a marked increase in all-cause mortality rates. Okura et al. (2003:1131) confirm that effects of exercise intensity on physical fitness and risk factors for coronary Herat disease.
- Full Text:
- Date Issued: 2008
Antibacterial properties of the methanol extract of helichrysum pedunculatum
- Authors: Ncube, Nqobile S
- Date: 2008
- Subjects: Medicinal plants , Methanol , Helichrysum
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11241 , http://hdl.handle.net/10353/461 , Medicinal plants , Methanol , Helichrysum
- Description: The methanol extract of Helichrisum pedunculatum was screened for antimicrobial activity up to a concentration of 5 mg/ml using the agar dilution technique. A number of test bacterial isolates, comprising both Gram negative and Gram positive organisms were susceptible to the crude extract of the plant. The minimum inhibitory concentrations (MICs) of the extract ranged between 1 and 5 mg/ml for the susceptible organisms. The MICs of the selected antibiotics, chloramphenicol and penicillin, ranged between 2 and 4 mg/L, and 2 and 32 mg/L respectively against Bacillus cereus, Proteus vulgaris and Staphylococcus aureus OKOH1. Bactericidal activity was determined by the time kill assay. The methanol extract of the plant was not bactericidal at 1 × MIC for B. cereus, P. vulgaris and Staph. aureus OKOH1. At 2 × MIC the extract was bacteriostatic against B. cereus but bactericidal against P. vulgaris and Staph. aureus OKOH1. Combination studies were done at 1/2 × MIC, 1 × MIC and 2 × MIC of the plant extract with 1 × MIC of the antibiotics. Combinations of the plant extract and chloramphenicol resulted in mostly indifferent interactions against P. vulgaris and Staph. aureus OKOH1 but synergistic interactions at higher concentration of the plant extract for B. cereus. Penicillin combinations gave synergistic interactions at lower concentrations of the plant for P.vulgaris and Staph. aureus OKOH1 but was mostly indifferent for B. cereus.
- Full Text:
- Date Issued: 2008
- Authors: Ncube, Nqobile S
- Date: 2008
- Subjects: Medicinal plants , Methanol , Helichrysum
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11241 , http://hdl.handle.net/10353/461 , Medicinal plants , Methanol , Helichrysum
- Description: The methanol extract of Helichrisum pedunculatum was screened for antimicrobial activity up to a concentration of 5 mg/ml using the agar dilution technique. A number of test bacterial isolates, comprising both Gram negative and Gram positive organisms were susceptible to the crude extract of the plant. The minimum inhibitory concentrations (MICs) of the extract ranged between 1 and 5 mg/ml for the susceptible organisms. The MICs of the selected antibiotics, chloramphenicol and penicillin, ranged between 2 and 4 mg/L, and 2 and 32 mg/L respectively against Bacillus cereus, Proteus vulgaris and Staphylococcus aureus OKOH1. Bactericidal activity was determined by the time kill assay. The methanol extract of the plant was not bactericidal at 1 × MIC for B. cereus, P. vulgaris and Staph. aureus OKOH1. At 2 × MIC the extract was bacteriostatic against B. cereus but bactericidal against P. vulgaris and Staph. aureus OKOH1. Combination studies were done at 1/2 × MIC, 1 × MIC and 2 × MIC of the plant extract with 1 × MIC of the antibiotics. Combinations of the plant extract and chloramphenicol resulted in mostly indifferent interactions against P. vulgaris and Staph. aureus OKOH1 but synergistic interactions at higher concentration of the plant extract for B. cereus. Penicillin combinations gave synergistic interactions at lower concentrations of the plant for P.vulgaris and Staph. aureus OKOH1 but was mostly indifferent for B. cereus.
- Full Text:
- Date Issued: 2008
An analysis of the influence of question design on pupils' approaches to number pattern generalisation tasks
- Authors: Samson, Duncan Alistair
- Date: 2008
- Subjects: Mathematics -- Study and teaching Number theory -- Problems, exercises, etc Algebra -- Study and teaching Arithmetic -- Foundations Pattern perception
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1421 , http://hdl.handle.net/10962/d1003302
- Description: This study is based on a qualitative investigation framed within an interpretive paradigm, and aims to investigate the extent to which question design affects the solution strategies adopted by children when solving linear number pattern generalisation tasks presented in pictorial and numeric contexts. The research tool comprised a series of 22 pencil and paper exercises based on linear generalisation tasks set in both numeric and 2-dimensional pictorial contexts. The responses to these linear generalisation questions were classified by means of stage descriptors as well as stage modifiers. The method or strategy adopted was carefully analysed and classified into one of seven categories. A meta-analysis focused on the formula derived for the nth term in conjunction with its justification. The process of justification proved to be a critical factor in being able to accurately interpret the origin of the sub-structure evident in many of these responses. From a theoretical perspective, the central role of justification/proof within the context of this study is seen as communication of mathematical understanding, and the process of justification/proof proved to be highly successful in providing a window of understanding into each pupil’s cognitive reasoning. The results of this study strongly support the notion that question design can play a critical role in influencing pupils’ choice of strategy and level of attainment when solving pattern generalisation tasks. Furthermore, this study identified a diverse range of visually motivated strategies and mechanisms of visualisation. An awareness and appreciation for such a diversity of visualisation strategies, as well as an understanding of the importance of appropriate question design, has direct pedagogical application within the context of the mathematics classroom.
- Full Text:
- Date Issued: 2008
- Authors: Samson, Duncan Alistair
- Date: 2008
- Subjects: Mathematics -- Study and teaching Number theory -- Problems, exercises, etc Algebra -- Study and teaching Arithmetic -- Foundations Pattern perception
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1421 , http://hdl.handle.net/10962/d1003302
- Description: This study is based on a qualitative investigation framed within an interpretive paradigm, and aims to investigate the extent to which question design affects the solution strategies adopted by children when solving linear number pattern generalisation tasks presented in pictorial and numeric contexts. The research tool comprised a series of 22 pencil and paper exercises based on linear generalisation tasks set in both numeric and 2-dimensional pictorial contexts. The responses to these linear generalisation questions were classified by means of stage descriptors as well as stage modifiers. The method or strategy adopted was carefully analysed and classified into one of seven categories. A meta-analysis focused on the formula derived for the nth term in conjunction with its justification. The process of justification proved to be a critical factor in being able to accurately interpret the origin of the sub-structure evident in many of these responses. From a theoretical perspective, the central role of justification/proof within the context of this study is seen as communication of mathematical understanding, and the process of justification/proof proved to be highly successful in providing a window of understanding into each pupil’s cognitive reasoning. The results of this study strongly support the notion that question design can play a critical role in influencing pupils’ choice of strategy and level of attainment when solving pattern generalisation tasks. Furthermore, this study identified a diverse range of visually motivated strategies and mechanisms of visualisation. An awareness and appreciation for such a diversity of visualisation strategies, as well as an understanding of the importance of appropriate question design, has direct pedagogical application within the context of the mathematics classroom.
- Full Text:
- Date Issued: 2008