The determinants of tender opportunities in consulting engineering firms in the Eastern Cape
- Authors: Viljoen, Dirk Johannes
- Date: 2017
- Subjects: Tender offers (Securities) -- South Africa -- Eastern Cape Consulting engineers -- South Africa -- Eastern Cape Engineering firms -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/14102 , vital:27426
- Description: Management of an engineering consultancy unit in the Eastern Cape Province is concerned about the costs incurred by project managers and specialist engineers pursuing tender opportunities that are not feasible. Annual losses in this unit due to unsuccessful tenders amounts to R2,5 million annually, which equates to about 12% of the revenue generated by the unit. The aim of the research study is to assist the consulting engineering firm by investigating and identifying the key determinants for making the decision of whether to bid on a particular tender opportunity. The study includes an assessment of relevant literature, academia and text to investigate key factors that could influence the decision to bid on tenders from which research questions and appropriate theories were drawn. Based on the research questions and theories that emanated from the literature, the study also includes the assessment of primary data through the administration of a structured questionnaire. The questionnaire is empirically analysed within the positivistic research paradigm through the use of descriptive and inferential statistics. Conclusions are drawn and recommendations are made based on the findings of the administered questionnaire.
- Full Text:
- Date Issued: 2017
- Authors: Viljoen, Dirk Johannes
- Date: 2017
- Subjects: Tender offers (Securities) -- South Africa -- Eastern Cape Consulting engineers -- South Africa -- Eastern Cape Engineering firms -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/14102 , vital:27426
- Description: Management of an engineering consultancy unit in the Eastern Cape Province is concerned about the costs incurred by project managers and specialist engineers pursuing tender opportunities that are not feasible. Annual losses in this unit due to unsuccessful tenders amounts to R2,5 million annually, which equates to about 12% of the revenue generated by the unit. The aim of the research study is to assist the consulting engineering firm by investigating and identifying the key determinants for making the decision of whether to bid on a particular tender opportunity. The study includes an assessment of relevant literature, academia and text to investigate key factors that could influence the decision to bid on tenders from which research questions and appropriate theories were drawn. Based on the research questions and theories that emanated from the literature, the study also includes the assessment of primary data through the administration of a structured questionnaire. The questionnaire is empirically analysed within the positivistic research paradigm through the use of descriptive and inferential statistics. Conclusions are drawn and recommendations are made based on the findings of the administered questionnaire.
- Full Text:
- Date Issued: 2017
'n Leesmoontlikheid van Jeanne Goosen se teks Louoond : die vrou as skrywer binne die Suid-Afrikaanse bestel
- Authors: Viljoen, Erika Valeska
- Date: 1989
- Subjects: Goosen, Jeanne -- Criticism and interpretation , Goosen, Jeanne -- Louoond
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3573 , http://hdl.handle.net/10962/d1002096 , Goosen, Jeanne -- Criticism and interpretation , Goosen, Jeanne -- Louoond
- Description: This thesis investigates the narrative strategies of Jeanne Goosen, as employed in her short novel, Louoond. I regard this text as an excellent example of modern Afrikaans prose, and particular reference was made to her previous novel: Om 'n mens na te boots which indicates similarities to the text under scrutiny. Chapter One is a close reading of the first chapter of the novel, in order to identify certain prominent codes, and also to determine what the text itself prescribes. My presumption is that the text determines how it should be read, that no single, predetermined strategy can be rigidly applied to it. Thus I formulated my own individual possible reading from the first chapter, and I view it throughout as mere "speculation", since this possible reading remains only a possibility. Chapter Two contains the theoretical background that is necessary for a scientific study of this kind. I followed mainly the strategies of Roland Barthes and Jacques Derrida, who are pioneers in the post -modernistic theory. It was particularly important to investigate the role of the narrator: the narrator in Louoond presents herself as a writer, therefore it is the process that is paramount. In Chapter Three the code of writing, as identified in Chapter ʺOneʺ of Louoond, is followed closely throughout the text. In Louoond, which is metatextual, violence is textually inherent, and also part of the process of writing. This violence is definitely also part of the South African situation as it is signified in the novel. Throughout the narrator is in a state of tension about her own role in the ʺrevolutionʺ - in which also her own text is a revolution in language, but always within the NOW of South Africa. Chapter Four concerns itself mainly with the role of the woman as narrator, as muse, as primary protagonist. I discuss the code of woman in relation to prominent feminist writers, but it remains in context of the text. Each issue is in the first place determined by the text, the text therefore determines which feminist issues will be investigated. The South African situation, and specifically the Afrikaner situation, serves throughout as intertext for Louoond, as with the code of writing. Other intertextual references are important, because the text is never independent from anything outside itself, and could not exist in such independence. Music plays an important role, with Callas as muse and as fellow female artist, while George Sand functions as fellow writer. Woman, independent of man, is put forward as creator. In my reading, the text remains in the first place a fabrication/imitation of the South African reality, and the fInal scene reaffirms the ʺfinal catastropheʺ that is indicated in the motto as a ʺcondition of controlled hysteriaʺ
- Full Text:
- Date Issued: 1989
- Authors: Viljoen, Erika Valeska
- Date: 1989
- Subjects: Goosen, Jeanne -- Criticism and interpretation , Goosen, Jeanne -- Louoond
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3573 , http://hdl.handle.net/10962/d1002096 , Goosen, Jeanne -- Criticism and interpretation , Goosen, Jeanne -- Louoond
- Description: This thesis investigates the narrative strategies of Jeanne Goosen, as employed in her short novel, Louoond. I regard this text as an excellent example of modern Afrikaans prose, and particular reference was made to her previous novel: Om 'n mens na te boots which indicates similarities to the text under scrutiny. Chapter One is a close reading of the first chapter of the novel, in order to identify certain prominent codes, and also to determine what the text itself prescribes. My presumption is that the text determines how it should be read, that no single, predetermined strategy can be rigidly applied to it. Thus I formulated my own individual possible reading from the first chapter, and I view it throughout as mere "speculation", since this possible reading remains only a possibility. Chapter Two contains the theoretical background that is necessary for a scientific study of this kind. I followed mainly the strategies of Roland Barthes and Jacques Derrida, who are pioneers in the post -modernistic theory. It was particularly important to investigate the role of the narrator: the narrator in Louoond presents herself as a writer, therefore it is the process that is paramount. In Chapter Three the code of writing, as identified in Chapter ʺOneʺ of Louoond, is followed closely throughout the text. In Louoond, which is metatextual, violence is textually inherent, and also part of the process of writing. This violence is definitely also part of the South African situation as it is signified in the novel. Throughout the narrator is in a state of tension about her own role in the ʺrevolutionʺ - in which also her own text is a revolution in language, but always within the NOW of South Africa. Chapter Four concerns itself mainly with the role of the woman as narrator, as muse, as primary protagonist. I discuss the code of woman in relation to prominent feminist writers, but it remains in context of the text. Each issue is in the first place determined by the text, the text therefore determines which feminist issues will be investigated. The South African situation, and specifically the Afrikaner situation, serves throughout as intertext for Louoond, as with the code of writing. Other intertextual references are important, because the text is never independent from anything outside itself, and could not exist in such independence. Music plays an important role, with Callas as muse and as fellow female artist, while George Sand functions as fellow writer. Woman, independent of man, is put forward as creator. In my reading, the text remains in the first place a fabrication/imitation of the South African reality, and the fInal scene reaffirms the ʺfinal catastropheʺ that is indicated in the motto as a ʺcondition of controlled hysteriaʺ
- Full Text:
- Date Issued: 1989
The legal implications of rugby injuries
- Authors: Viljoen, Erna
- Date: 2003
- Subjects: Rugby football injuries -- South Africa , Sports medicine -- Law and legislation -- South Africa , Rugby football players -- Legal status, laws, etc. -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11058 , http://hdl.handle.net/10948/332 , Rugby football injuries -- South Africa , Sports medicine -- Law and legislation -- South Africa , Rugby football players -- Legal status, laws, etc. -- South Africa
- Description: Sports law in South Africa is a field requiring exciting and intensive research. With so many sporting codes changing their status to professional sport, intensive research on the legal implications pertaining to each professional sporting code has also become necessary. Professional rugby in South Africa has grown into a multimillion rand industry. It is an industry whose role players need specialized legal advice on a multitude of issues. This dissertation addresses the legal issues arising out of the situation where a professional player is injured, during practice or a game, due to the intentional or negligent action of another. The medico-legal aspects of rugby, relating to causation and proof of injuries are an indispensable element of proving liability where rugby injuries are concerned. These aspects are crucial in assessing the criminal and delictual liability of players, coaches, referees, team physicians and even the union concerned. The problem of rugby violence, causing injury, is addressed by both the criminal law and the law of delict with the issue of consent being central to this discussion. Furthermore, the labour law implications can be far-reaching for both the player and the employer union due to the unique features of sport as an industry. All role players in professional rugby will have to cooperate with the legal community to ensure that a practical body of law is established in order to make rugby a safer sport for all concerned and to protect the professional player from unnecessary, incapacitating injury.
- Full Text:
- Date Issued: 2003
- Authors: Viljoen, Erna
- Date: 2003
- Subjects: Rugby football injuries -- South Africa , Sports medicine -- Law and legislation -- South Africa , Rugby football players -- Legal status, laws, etc. -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11058 , http://hdl.handle.net/10948/332 , Rugby football injuries -- South Africa , Sports medicine -- Law and legislation -- South Africa , Rugby football players -- Legal status, laws, etc. -- South Africa
- Description: Sports law in South Africa is a field requiring exciting and intensive research. With so many sporting codes changing their status to professional sport, intensive research on the legal implications pertaining to each professional sporting code has also become necessary. Professional rugby in South Africa has grown into a multimillion rand industry. It is an industry whose role players need specialized legal advice on a multitude of issues. This dissertation addresses the legal issues arising out of the situation where a professional player is injured, during practice or a game, due to the intentional or negligent action of another. The medico-legal aspects of rugby, relating to causation and proof of injuries are an indispensable element of proving liability where rugby injuries are concerned. These aspects are crucial in assessing the criminal and delictual liability of players, coaches, referees, team physicians and even the union concerned. The problem of rugby violence, causing injury, is addressed by both the criminal law and the law of delict with the issue of consent being central to this discussion. Furthermore, the labour law implications can be far-reaching for both the player and the employer union due to the unique features of sport as an industry. All role players in professional rugby will have to cooperate with the legal community to ensure that a practical body of law is established in order to make rugby a safer sport for all concerned and to protect the professional player from unnecessary, incapacitating injury.
- Full Text:
- Date Issued: 2003
Brain-based learning and music education
- Authors: Viljoen, Jacobus Frederick
- Date: 2016
- Subjects: Music -- Instruction and study , Cognitive learning , Music teachers
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: http://hdl.handle.net/10948/7359 , vital:21336
- Description: In the theoretical framework he highlights further implications of the Brain-based theory, which are (1) the importance of early development in children, (2) the importance of attention in class, (3) the inclusion of physical education in the learning process and (4) the value of an enriched learning environment. Furthermore, the researcher explores the types of stress found in the ordinary classroom as well as specific types of stress habitual to the music classroom, while also presenting possible solutions to these types of stress using the Brain-based learning theory. In chapter four, the researcher draws on the theoretical framework presented in the study to devise a Brain-based model for the music class. The study concludes with a summary of the literature and a brief concluding statement to music educators.
- Full Text:
- Date Issued: 2016
- Authors: Viljoen, Jacobus Frederick
- Date: 2016
- Subjects: Music -- Instruction and study , Cognitive learning , Music teachers
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: http://hdl.handle.net/10948/7359 , vital:21336
- Description: In the theoretical framework he highlights further implications of the Brain-based theory, which are (1) the importance of early development in children, (2) the importance of attention in class, (3) the inclusion of physical education in the learning process and (4) the value of an enriched learning environment. Furthermore, the researcher explores the types of stress found in the ordinary classroom as well as specific types of stress habitual to the music classroom, while also presenting possible solutions to these types of stress using the Brain-based learning theory. In chapter four, the researcher draws on the theoretical framework presented in the study to devise a Brain-based model for the music class. The study concludes with a summary of the literature and a brief concluding statement to music educators.
- Full Text:
- Date Issued: 2016
Gaze patterns of expert and amateur sight-readers with particular focus on the cognitive underpinnings of reading key and time signatures
- Authors: Viljoen, Jacobus Frederick
- Date: 2021-10-29
- Subjects: Sight-reading (Music) , Eye tracking , Cognition , Musical notation , Tonality , Musical meter and rhythm
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/190908 , vital:45040 , 10.21504/10962/190908
- Description: Over the last decade, eye-tracking technology has provided researchers with specific tools to study the process of reading (language and music) empirically. Most of these studies have focused on the “Eye-Hand Span” phenomenon (the ability to read ahead of the point of playing). However, little research investigates the cognitive implications of specific aspects of musical notation when performed in real time. This research aimed to observe the fixations patterns of sight-readers in order to investigate the cognitive underpinnings of key and time signatures in music scores. This research project is a quantitative study using a quasi-experimental research design. Tobii eye-tracking equipment and software were used to record the eye movements of 11 expert and 7 amateur keyboard sight-readers. Two key aspects of music notation, key and time signatures, were selected as the main focus of the study. To investigate these aspects, eighteen research participants were provided with seventeen sight-reading examples for one hand (low complexity) and two hands (high complexity) composed specifically by the researcher. Several examples contained one or more unexpected aspects (accidentals or changes of time signature) to test their effect on fixation count and duration. Two variables (fixation count and fixation duration) were utilised to analyze fixation patterns on the selected aspects of the scores. Three main results emerged from the data analysis: 1) Expert sight-readers performed with much greater accuracy than experts in both tests; 2) Expert sight-readers exhibited a higher fixation count on entire scores in complex examples; 3) Both expert and amateur sight-readers fixate more and for longer on certain notational aspects such as key and time signatures than other notational aspects such as deviations or individual notes. This selection of focused attention suggests that both expert and amateur sight-readers cognitively process music scores in a hierarchical order. In conclusion, key and time signatures appear to require more and longer fixations by both groups of readers than other aspects of the score. This supports previous research which suggests that sound musical knowledge may play a positive role in performers’ sight-reading skills, thereby contributing to more successful sight-reading performances. , Thesis (PhD) -- Faculty of Humanities, Music and Musicology, 2021
- Full Text:
- Date Issued: 2021-10-29
- Authors: Viljoen, Jacobus Frederick
- Date: 2021-10-29
- Subjects: Sight-reading (Music) , Eye tracking , Cognition , Musical notation , Tonality , Musical meter and rhythm
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10962/190908 , vital:45040 , 10.21504/10962/190908
- Description: Over the last decade, eye-tracking technology has provided researchers with specific tools to study the process of reading (language and music) empirically. Most of these studies have focused on the “Eye-Hand Span” phenomenon (the ability to read ahead of the point of playing). However, little research investigates the cognitive implications of specific aspects of musical notation when performed in real time. This research aimed to observe the fixations patterns of sight-readers in order to investigate the cognitive underpinnings of key and time signatures in music scores. This research project is a quantitative study using a quasi-experimental research design. Tobii eye-tracking equipment and software were used to record the eye movements of 11 expert and 7 amateur keyboard sight-readers. Two key aspects of music notation, key and time signatures, were selected as the main focus of the study. To investigate these aspects, eighteen research participants were provided with seventeen sight-reading examples for one hand (low complexity) and two hands (high complexity) composed specifically by the researcher. Several examples contained one or more unexpected aspects (accidentals or changes of time signature) to test their effect on fixation count and duration. Two variables (fixation count and fixation duration) were utilised to analyze fixation patterns on the selected aspects of the scores. Three main results emerged from the data analysis: 1) Expert sight-readers performed with much greater accuracy than experts in both tests; 2) Expert sight-readers exhibited a higher fixation count on entire scores in complex examples; 3) Both expert and amateur sight-readers fixate more and for longer on certain notational aspects such as key and time signatures than other notational aspects such as deviations or individual notes. This selection of focused attention suggests that both expert and amateur sight-readers cognitively process music scores in a hierarchical order. In conclusion, key and time signatures appear to require more and longer fixations by both groups of readers than other aspects of the score. This supports previous research which suggests that sound musical knowledge may play a positive role in performers’ sight-reading skills, thereby contributing to more successful sight-reading performances. , Thesis (PhD) -- Faculty of Humanities, Music and Musicology, 2021
- Full Text:
- Date Issued: 2021-10-29
Restricted physical activity research in older women: does this represent additional risk to health?
- Viljoen, Janet E, Christie, Candice J
- Authors: Viljoen, Janet E , Christie, Candice J
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143682 , vital:38273 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: Post-menopausal women are at great risk of developing cardiovascular disease due to the loss of endogenous estrogen at menopause. This risk can be mediated via medication, but this route is costly and carries the risk of side effects which can reduce quality of life experience. The benefit of a lifestyle management approach to such risk, particularly via physical activity, is the emotional wellbeing that accompanies the physical health improvement. Research has not focused on women post-menses in this regard, and the existing science has preferred investigations of low intensity, aerobic type exercise. Our research engaged women, post-menses, in a high frequency, high intensity resistance training programme for 12 weeks in a supervised setting. Apart from clinical health benefits, the participants reported feeling empowered by the intervention. This paper will argue that the predominating research focus has tended to reduce choices for women, and thus restrict independence, individuality and self-confidence.
- Full Text:
- Date Issued: 2015
Restricted physical activity research in older women: does this represent additional risk to health?
- Authors: Viljoen, Janet E , Christie, Candice J
- Date: 2015
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143682 , vital:38273 , https://ischp.files.wordpress.com/2015/08/ischp_2015_abstract_booklet.pdf
- Description: Post-menopausal women are at great risk of developing cardiovascular disease due to the loss of endogenous estrogen at menopause. This risk can be mediated via medication, but this route is costly and carries the risk of side effects which can reduce quality of life experience. The benefit of a lifestyle management approach to such risk, particularly via physical activity, is the emotional wellbeing that accompanies the physical health improvement. Research has not focused on women post-menses in this regard, and the existing science has preferred investigations of low intensity, aerobic type exercise. Our research engaged women, post-menses, in a high frequency, high intensity resistance training programme for 12 weeks in a supervised setting. Apart from clinical health benefits, the participants reported feeling empowered by the intervention. This paper will argue that the predominating research focus has tended to reduce choices for women, and thus restrict independence, individuality and self-confidence.
- Full Text:
- Date Issued: 2015
The effect of progressive resistance training on the blood lipid profile in post-menopausal women
- Authors: Viljoen, Janet Erica
- Date: 2009
- Subjects: Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5113 , http://hdl.handle.net/10962/d1005191 , Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Description: The main purpose of this study was to assess the effect of progressive resistance training on the blood lipid profile in post-menopausal women. Thirty-four female subjects aged 50 to 75 years were selected from the population of Grahamstown, South Africa. All participants were previously sedentary and possessed at least one lipid profile abnormality but were otherwise healthy. Pre-tests included a sub-maximal stress Electrocardiogram, measures of stature, mass, central and limb girths as well as an oral glucose tolerance test (OGTT) and a total blood lipid profile. Participants took part in a 24-week progressive resistance training programme, consisting of three supervised sessions per week, each lasting 45 minutes and were not permitted to lose more than 10% of initial body mass during the 24-week study. All pre-test measures, excluding the stress ECG and the OGTT, were repeated every four weeks for the duration of the study. Results were that body mass, body mass index and waist-to-hip ratio did not change. Girth measures at mid-humerus, chest, waist, hip, mid-quadricep and mid-gastrocnemius all decreased significantly (p=0.05). LDL-cholesterol increased significantly over the course of 24 weeks (3.61mmol.L-1 to 4.07mmol.L-1) as did total cholesterol (5.81mmol.L-1 to 6.24mmol.L-1). Triglyceride concentration remained unchanged and HDL-cholesterol decreased significantly between the pre-test measure (1.55mmol.L-1) and the measure after six months (1.42mmol.L-1). It can be concluded that the blood lipid profile in a sample of post-menopausal women was not positively affected by a progressive resistance training programme over a 24 week period. , Maiden name: Kelly, Janet Erica
- Full Text:
- Date Issued: 2009
- Authors: Viljoen, Janet Erica
- Date: 2009
- Subjects: Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5113 , http://hdl.handle.net/10962/d1005191 , Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Description: The main purpose of this study was to assess the effect of progressive resistance training on the blood lipid profile in post-menopausal women. Thirty-four female subjects aged 50 to 75 years were selected from the population of Grahamstown, South Africa. All participants were previously sedentary and possessed at least one lipid profile abnormality but were otherwise healthy. Pre-tests included a sub-maximal stress Electrocardiogram, measures of stature, mass, central and limb girths as well as an oral glucose tolerance test (OGTT) and a total blood lipid profile. Participants took part in a 24-week progressive resistance training programme, consisting of three supervised sessions per week, each lasting 45 minutes and were not permitted to lose more than 10% of initial body mass during the 24-week study. All pre-test measures, excluding the stress ECG and the OGTT, were repeated every four weeks for the duration of the study. Results were that body mass, body mass index and waist-to-hip ratio did not change. Girth measures at mid-humerus, chest, waist, hip, mid-quadricep and mid-gastrocnemius all decreased significantly (p=0.05). LDL-cholesterol increased significantly over the course of 24 weeks (3.61mmol.L-1 to 4.07mmol.L-1) as did total cholesterol (5.81mmol.L-1 to 6.24mmol.L-1). Triglyceride concentration remained unchanged and HDL-cholesterol decreased significantly between the pre-test measure (1.55mmol.L-1) and the measure after six months (1.42mmol.L-1). It can be concluded that the blood lipid profile in a sample of post-menopausal women was not positively affected by a progressive resistance training programme over a 24 week period. , Maiden name: Kelly, Janet Erica
- Full Text:
- Date Issued: 2009
Strength training and cardiovascular risk post-menses, with particular emphasis on the plasma lipoproteins: a controlled trial
- Authors: Viljoen, Janet Erica
- Date: 2014
- Subjects: Weight training for women -- Physiological aspects , Exercise for women -- Physiological aspects , Middle-aged women -- Health and hygiene , Cardiovascular system -- Diseases , Hypercholesteremia , Blood lipoproteins
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5155 , http://hdl.handle.net/10962/d1013578
- Description: Introduction: Cardiovascular disease affects a greater proportion of females than it does males, and is responsible for an estimated 52 percent of female deaths per annum, globally. Due to the loss of oestrogen associated with the menopause, post-menopausal females are at elevated risk for hypercholesterolaemia which is a primary risk factor for cardiovascular disease. It has not yet been conclusively established whether resistance training can be used to ameliorate hypercholesterolaemia. Aim: This randomized controlled trial investigated what effect 12 weeks of progressive resistance training would have on plasma lipoproteins in a sample of post-menopausal females. Methods: Caucasian women (n=30 intervention and n=18 control) between the ages of 55 and 65 years who were not taking hormone replacement therapy were recruited. Participants did not smoke, were sedentary, were not taking any form of cholesterol-lowering medication, had at least one cholesterol abnormality at baseline but were otherwise healthy and able to participate in a strength training programme. Following extensive medical pre-screening, information dissemination and voluntary consent, the sample was divided into two groups. The exercise sample undertook 12 weeks of resistance training on five days of the week. The control group received no intervention. Measurements were obtained at baseline and every four weeks thereafter and included measures of strength, biochemistry (oestradiol, testosterone, full blood lipid profile, glycated haemoglobin and sex hormone binding globulin), anthropometry, morphology and self-reports (dietary intake, energy expenditure and the profile of mood states questionnaire). Results: There was no change to low density lipoprotein cholesterol, high density lipoprotein cholesterol, triglyceride content or total cholesterol as a result of the intervention. Back, chest and leg strength increased significantly (p<0.01) (increases of 51 percent, 35 percent and 43 percent respectively from baseline); waist circumference dropped (p<0.01) by 5 percent overall and diastolic blood pressure decreased significantly (-9 percent, p<0.01) in the exercise cohort but no change was noted in the matched control. Dietary intake, energy expenditure and body mass remained unchanged in both samples. Morphology (sum of skinfolds, estimated body fat content and girth measures) did not change and nor did other biochemical measures (HbA1c and sex hormone binding globulin) or hormone levels (oestradiol and testosterone). Despite the lack of overall change, an important finding was noted in individual results where a clear indication of ‘responders’ and ‘non-responders’ emerged. Conclusion: Overall mean results suggest that 12 weeks resistance training undertaken five days of the week was ineffective in reducing hypercholesterolaemia in this sample. Despite there being no identifying characteristics determined in this sample, evidence of responders and non-responders to the intervention indicates that reliance on mean data may not be sufficient when analysing data from exercise interventions. Therefore, while progressive resistance training had a positive effect on strength, waist circumference and diastolic blood pressure, it did not positively influence the plasma lipoproteins in this cohort of post-menopausal women. , Maiden name: Kelly, Janet Erica
- Full Text:
- Date Issued: 2014
- Authors: Viljoen, Janet Erica
- Date: 2014
- Subjects: Weight training for women -- Physiological aspects , Exercise for women -- Physiological aspects , Middle-aged women -- Health and hygiene , Cardiovascular system -- Diseases , Hypercholesteremia , Blood lipoproteins
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5155 , http://hdl.handle.net/10962/d1013578
- Description: Introduction: Cardiovascular disease affects a greater proportion of females than it does males, and is responsible for an estimated 52 percent of female deaths per annum, globally. Due to the loss of oestrogen associated with the menopause, post-menopausal females are at elevated risk for hypercholesterolaemia which is a primary risk factor for cardiovascular disease. It has not yet been conclusively established whether resistance training can be used to ameliorate hypercholesterolaemia. Aim: This randomized controlled trial investigated what effect 12 weeks of progressive resistance training would have on plasma lipoproteins in a sample of post-menopausal females. Methods: Caucasian women (n=30 intervention and n=18 control) between the ages of 55 and 65 years who were not taking hormone replacement therapy were recruited. Participants did not smoke, were sedentary, were not taking any form of cholesterol-lowering medication, had at least one cholesterol abnormality at baseline but were otherwise healthy and able to participate in a strength training programme. Following extensive medical pre-screening, information dissemination and voluntary consent, the sample was divided into two groups. The exercise sample undertook 12 weeks of resistance training on five days of the week. The control group received no intervention. Measurements were obtained at baseline and every four weeks thereafter and included measures of strength, biochemistry (oestradiol, testosterone, full blood lipid profile, glycated haemoglobin and sex hormone binding globulin), anthropometry, morphology and self-reports (dietary intake, energy expenditure and the profile of mood states questionnaire). Results: There was no change to low density lipoprotein cholesterol, high density lipoprotein cholesterol, triglyceride content or total cholesterol as a result of the intervention. Back, chest and leg strength increased significantly (p<0.01) (increases of 51 percent, 35 percent and 43 percent respectively from baseline); waist circumference dropped (p<0.01) by 5 percent overall and diastolic blood pressure decreased significantly (-9 percent, p<0.01) in the exercise cohort but no change was noted in the matched control. Dietary intake, energy expenditure and body mass remained unchanged in both samples. Morphology (sum of skinfolds, estimated body fat content and girth measures) did not change and nor did other biochemical measures (HbA1c and sex hormone binding globulin) or hormone levels (oestradiol and testosterone). Despite the lack of overall change, an important finding was noted in individual results where a clear indication of ‘responders’ and ‘non-responders’ emerged. Conclusion: Overall mean results suggest that 12 weeks resistance training undertaken five days of the week was ineffective in reducing hypercholesterolaemia in this sample. Despite there being no identifying characteristics determined in this sample, evidence of responders and non-responders to the intervention indicates that reliance on mean data may not be sufficient when analysing data from exercise interventions. Therefore, while progressive resistance training had a positive effect on strength, waist circumference and diastolic blood pressure, it did not positively influence the plasma lipoproteins in this cohort of post-menopausal women. , Maiden name: Kelly, Janet Erica
- Full Text:
- Date Issued: 2014
The effects of relative market share and the rate of market growth on the strategic attributes and financial performance of selected South African companies from 1977 to 1981
- Authors: Viljoen, John
- Date: 1984
- Subjects: Johannesburg Stock Exchange Boston Consulting Group Business enterprises -- Valuation -- South Africa Business enterprises -- South Africa -- Finance Business enterprises -- Economic aspects -- South Africa Stock exchanges -- South Africa Success in business Marketing research Strategic planning Business planning
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:722 , http://hdl.handle.net/10962/d1003816
- Description: This thesis analyses the effects of relative market share and the rate of market growth on the strategic characteristics and financial performance of selected companies quoted on the Johannesburg Stock Exchange over the period 1977 to 198. It is well established that business performance is partially contingent upon relative market share position and the rate of market growth. Together these variables comprise the basis of the Boston Consulting Group approach to portfolio analysis in the form of the Boston Consulting Group Growth/Share Matrix. A methodology was designed to test the validity of this matrix in measuring and predicting corporate behaviour at the business level in South Africa. Selected companies were placed into the matrix and analysed in terms of their strategic attributes (represented by selected financial ratios) and their level of performance (represented by a wide range of financial performance measures). The research findings show that relative market share and the rate of market growth have a significant impact on the strategic attributes and financial performance of South African businesses. Also, certain attributes are closely associated with particular types of performance. Therefore, given a specific performance target, management should ultimately be able to isolate and monitor the relevant strategic attributes in ensuring that the target is achieved. The analysis of contingent models of strategy is still in its infancy, but this study indicates that the field is possessed of great potential.
- Full Text:
- Date Issued: 1984
- Authors: Viljoen, John
- Date: 1984
- Subjects: Johannesburg Stock Exchange Boston Consulting Group Business enterprises -- Valuation -- South Africa Business enterprises -- South Africa -- Finance Business enterprises -- Economic aspects -- South Africa Stock exchanges -- South Africa Success in business Marketing research Strategic planning Business planning
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:722 , http://hdl.handle.net/10962/d1003816
- Description: This thesis analyses the effects of relative market share and the rate of market growth on the strategic characteristics and financial performance of selected companies quoted on the Johannesburg Stock Exchange over the period 1977 to 198. It is well established that business performance is partially contingent upon relative market share position and the rate of market growth. Together these variables comprise the basis of the Boston Consulting Group approach to portfolio analysis in the form of the Boston Consulting Group Growth/Share Matrix. A methodology was designed to test the validity of this matrix in measuring and predicting corporate behaviour at the business level in South Africa. Selected companies were placed into the matrix and analysed in terms of their strategic attributes (represented by selected financial ratios) and their level of performance (represented by a wide range of financial performance measures). The research findings show that relative market share and the rate of market growth have a significant impact on the strategic attributes and financial performance of South African businesses. Also, certain attributes are closely associated with particular types of performance. Therefore, given a specific performance target, management should ultimately be able to isolate and monitor the relevant strategic attributes in ensuring that the target is achieved. The analysis of contingent models of strategy is still in its infancy, but this study indicates that the field is possessed of great potential.
- Full Text:
- Date Issued: 1984
An analysis of non-white transport requirements in an Eastern Cape urban area
- Authors: Viljoen, John
- Date: 1978
- Subjects: Buses -- South Africa -- Eastern Cape Black people -- Transportation -- South Africa -- Eastern Cape Transportation, Automotive -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:807 , http://hdl.handle.net/10962/d1007265
- Description: From Preface: The following research is centred around the Grahamstown non-white urban transportation problem. The bus service under consideration is owned and operated by the Grahamstown Municipality and is attached to the City Fire Department. It caters only for non-white commuters by operating fourteen buses, which carry approximately 1 200 000 people per year. As such, the difficulties encountered by this transport service should be generally, though not entirely, applicable only to relatively small non-white transport undertakings. The aims of this research are threefold: 1. to establish the environment within which transport undertakings operate, the structure of the undertaking in response to this environment and the problems which such undertakings encounter in their daily operations ; 2. by analysing in detail a specific transport service, an attempt has been made to delineate problem areas in both the cost and revenue structures, and to ascertain the degree of management awareness of the existence of these problems ; and 3. to determine the social impact of this transport operation and to evaluate all aspects of the service in relation to commuters, business and social needs and wants. Unfortunately, an attempt to extend this type of research to further Eastern Cape urban areas was unsuccessful due to the refusal by certain transport undertakings and government bodies to provide essential information.
- Full Text:
- Date Issued: 1978
- Authors: Viljoen, John
- Date: 1978
- Subjects: Buses -- South Africa -- Eastern Cape Black people -- Transportation -- South Africa -- Eastern Cape Transportation, Automotive -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:807 , http://hdl.handle.net/10962/d1007265
- Description: From Preface: The following research is centred around the Grahamstown non-white urban transportation problem. The bus service under consideration is owned and operated by the Grahamstown Municipality and is attached to the City Fire Department. It caters only for non-white commuters by operating fourteen buses, which carry approximately 1 200 000 people per year. As such, the difficulties encountered by this transport service should be generally, though not entirely, applicable only to relatively small non-white transport undertakings. The aims of this research are threefold: 1. to establish the environment within which transport undertakings operate, the structure of the undertaking in response to this environment and the problems which such undertakings encounter in their daily operations ; 2. by analysing in detail a specific transport service, an attempt has been made to delineate problem areas in both the cost and revenue structures, and to ascertain the degree of management awareness of the existence of these problems ; and 3. to determine the social impact of this transport operation and to evaluate all aspects of the service in relation to commuters, business and social needs and wants. Unfortunately, an attempt to extend this type of research to further Eastern Cape urban areas was unsuccessful due to the refusal by certain transport undertakings and government bodies to provide essential information.
- Full Text:
- Date Issued: 1978
Marketing Management: BEC 221 & 221E
- Authors: Viljoen, K , Chikandiwa, C
- Date: 2011-01
- Subjects: Marketing -- Management
- Language: English
- Type: Examination paper
- Identifier: vital:17437 , http://hdl.handle.net/10353/d1010247
- Description: Marketing Management: BEC 221 & 221E, Supplementary examination, January 2011.
- Full Text: false
- Date Issued: 2011-01
- Authors: Viljoen, K , Chikandiwa, C
- Date: 2011-01
- Subjects: Marketing -- Management
- Language: English
- Type: Examination paper
- Identifier: vital:17437 , http://hdl.handle.net/10353/d1010247
- Description: Marketing Management: BEC 221 & 221E, Supplementary examination, January 2011.
- Full Text: false
- Date Issued: 2011-01
Marketing Management: BEC 221 & 221E
- Authors: Viljoen, K , Chikwandiwa, C
- Date: 2010-11
- Subjects: Marketing management
- Language: English
- Type: Examination paper
- Identifier: vital:17454 , http://hdl.handle.net/10353/d1010268
- Description: Marketing Management: BEC 221 & 221E, Supplementary examination November 2010.
- Full Text: false
- Date Issued: 2010-11
- Authors: Viljoen, K , Chikwandiwa, C
- Date: 2010-11
- Subjects: Marketing management
- Language: English
- Type: Examination paper
- Identifier: vital:17454 , http://hdl.handle.net/10353/d1010268
- Description: Marketing Management: BEC 221 & 221E, Supplementary examination November 2010.
- Full Text: false
- Date Issued: 2010-11
Marketing Management: BEC 221 & 221E
- Viljoen, Kim, Chimona, Richard
- Authors: Viljoen, Kim , Chimona, Richard
- Date: 2011-09
- Subjects: Marketing management
- Language: English
- Type: Examination paper
- Identifier: vital:17458 , http://hdl.handle.net/10353/d1010272
- Description: Marketing Management: BEC 221 & 221E, supplementary examination September 2011.
- Full Text: false
- Date Issued: 2011-09
- Authors: Viljoen, Kim , Chimona, Richard
- Date: 2011-09
- Subjects: Marketing management
- Language: English
- Type: Examination paper
- Identifier: vital:17458 , http://hdl.handle.net/10353/d1010272
- Description: Marketing Management: BEC 221 & 221E, supplementary examination September 2011.
- Full Text: false
- Date Issued: 2011-09
Field and laboratory measurements of polarization mode dispersion in optical fibres
- Authors: Viljoen, Lawrence
- Date: 2005
- Subjects: Optical fibers
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10513 , http://hdl.handle.net/10948/375 , Optical fibers
- Description: In this dissertation, the PMD measurements of field and laboratory optical fibre will be discussed. In the laboratory, temperature cycling of different configurations of fibre were tested. It is shown that the environmental temperature plays a significant role in determining the behaviour of PMD. The PMD of all fibres tested showed changes in the PMD when the environmental temperature was changing, but remained constant for constant temperatures. This is explained by the structure and thermal coefficients of the materials used to make up the fibres. It is found that the temperature gradient has a large effect on the magnitude of the PMD fluctuations. Field measurements were conducted on buried and aerial cable. It is shown that the PMD of aerial cables shows a higher degree of scatter than the PMD of buried cables. The scatter seen in the PMD can be attributed to changing environmental temperature as well as movement of the cable. The PMD of the deployed fibre is in all cases found to be considerably higher than the PMD of laboratory fibre. Age of the fibre, deployment conditions and installation procedures are believed to be responsible for the higher value. Long term monitoring of the PMD is also found to be critical when testing fibres. Over- or underestimations of the average PMD are often made in the field due to only a limited number of readings being taken. Having a large test ensemble of input states of polarization is shown to increase the accuracy of the results. For aerial cables, movement of the cable has the same effect as scrambling the input SOP and hence the results will be more accurate. Buried cables on the other hand show little movement and hence only one input SOP is often tested. Scrambling the input SOP will therefore increase the accuracy of these results.
- Full Text:
- Date Issued: 2005
- Authors: Viljoen, Lawrence
- Date: 2005
- Subjects: Optical fibers
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10513 , http://hdl.handle.net/10948/375 , Optical fibers
- Description: In this dissertation, the PMD measurements of field and laboratory optical fibre will be discussed. In the laboratory, temperature cycling of different configurations of fibre were tested. It is shown that the environmental temperature plays a significant role in determining the behaviour of PMD. The PMD of all fibres tested showed changes in the PMD when the environmental temperature was changing, but remained constant for constant temperatures. This is explained by the structure and thermal coefficients of the materials used to make up the fibres. It is found that the temperature gradient has a large effect on the magnitude of the PMD fluctuations. Field measurements were conducted on buried and aerial cable. It is shown that the PMD of aerial cables shows a higher degree of scatter than the PMD of buried cables. The scatter seen in the PMD can be attributed to changing environmental temperature as well as movement of the cable. The PMD of the deployed fibre is in all cases found to be considerably higher than the PMD of laboratory fibre. Age of the fibre, deployment conditions and installation procedures are believed to be responsible for the higher value. Long term monitoring of the PMD is also found to be critical when testing fibres. Over- or underestimations of the average PMD are often made in the field due to only a limited number of readings being taken. Having a large test ensemble of input states of polarization is shown to increase the accuracy of the results. For aerial cables, movement of the cable has the same effect as scrambling the input SOP and hence the results will be more accurate. Buried cables on the other hand show little movement and hence only one input SOP is often tested. Scrambling the input SOP will therefore increase the accuracy of these results.
- Full Text:
- Date Issued: 2005
A framework towards effective control in information security governance
- Authors: Viljoen, Melanie
- Date: 2009
- Subjects: Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9773 , http://hdl.handle.net/10948/887 , Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Description: The importance of information in business today has made the need to properly secure this asset evident. Information security has become a responsibility for all managers of an organization. To better support more efficient management of information security, timely information security management information should be made available to all managers. Smaller organizations face special challenges with regard to information security management and reporting due to limited resources (Ross, 2008). This dissertation discusses a Framework for Information Security Management Information (FISMI) that aims to improve the visibility and contribute to better management of information security throughout an organization by enabling the provision of summarized, comprehensive information security management information to all managers in an affordable manner.
- Full Text:
- Date Issued: 2009
- Authors: Viljoen, Melanie
- Date: 2009
- Subjects: Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9773 , http://hdl.handle.net/10948/887 , Data protection , Computer networks -- Security measures , Electronic data processing departments -- Security measures
- Description: The importance of information in business today has made the need to properly secure this asset evident. Information security has become a responsibility for all managers of an organization. To better support more efficient management of information security, timely information security management information should be made available to all managers. Smaller organizations face special challenges with regard to information security management and reporting due to limited resources (Ross, 2008). This dissertation discusses a Framework for Information Security Management Information (FISMI) that aims to improve the visibility and contribute to better management of information security throughout an organization by enabling the provision of summarized, comprehensive information security management information to all managers in an affordable manner.
- Full Text:
- Date Issued: 2009
Managing leader member exchange frequency effectively in a South African retail company
- Viljoen, Petrus Johannes Jacobus
- Authors: Viljoen, Petrus Johannes Jacobus
- Date: 2009
- Subjects: Communication in organizations -- South Africa , Communication in management -- South Africa , Leadership -- South Africa , Organizational behavior -- South Africa , Organizational effectiveness -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8692 , http://hdl.handle.net/10948/1106 , Communication in organizations -- South Africa , Communication in management -- South Africa , Leadership -- South Africa , Organizational behavior -- South Africa , Organizational effectiveness -- South Africa
- Description: The purpose of this research is to highlight the importance of identifying the communication frequency within the leader-member exchange (LMX) relationship, and to appreciate what the positive or negative effect of a low or high LMX frequency has on this relationship and on staff morale. Management is for the most part responsible for communication frequency and is in a position and has the means to change such frequency or to add additional communication channels. The research was based on a program introduced in a South African retail company three years ago. Data was collected from 64 stores in the Western Cape and the results were statistically analysed on the SPSS16 program. The results clearly supported the hypotheses that, in a low-communication frequency area, an increase in communication frequency has a positive effect on staff morale and that the proximity to head office (or lack of it) does not have a negative effect on staff morale.
- Full Text:
- Date Issued: 2009
- Authors: Viljoen, Petrus Johannes Jacobus
- Date: 2009
- Subjects: Communication in organizations -- South Africa , Communication in management -- South Africa , Leadership -- South Africa , Organizational behavior -- South Africa , Organizational effectiveness -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8692 , http://hdl.handle.net/10948/1106 , Communication in organizations -- South Africa , Communication in management -- South Africa , Leadership -- South Africa , Organizational behavior -- South Africa , Organizational effectiveness -- South Africa
- Description: The purpose of this research is to highlight the importance of identifying the communication frequency within the leader-member exchange (LMX) relationship, and to appreciate what the positive or negative effect of a low or high LMX frequency has on this relationship and on staff morale. Management is for the most part responsible for communication frequency and is in a position and has the means to change such frequency or to add additional communication channels. The research was based on a program introduced in a South African retail company three years ago. Data was collected from 64 stores in the Western Cape and the results were statistically analysed on the SPSS16 program. The results clearly supported the hypotheses that, in a low-communication frequency area, an increase in communication frequency has a positive effect on staff morale and that the proximity to head office (or lack of it) does not have a negative effect on staff morale.
- Full Text:
- Date Issued: 2009
An investigation into the use of the standard 7 year-end mathematics results as a predictor of the mark obtained in the final Cape Senior Certificate examination
- Authors: Viljoen, Richard Antony
- Date: 1984
- Subjects: Mathematics -- Study and teaching (Secondary) Mathematics -- Study and teaching (Secondary) -- South Africa -- East London School children -- South Africa -- East London Mathematical ability Examinations -- South Africa -- Evaluation
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1830 , http://hdl.handle.net/10962/d1003749
- Description: From Introduction: As the headmaster of a large co-educational High School in East London, I have to counsel Standard 7 pupils at the end of each year with regard to their subject choices for the Senior Secondary phase. In consultation with the teacher-psychologists and the Standard 7 teachers, one has to make decisions with regard to subjects which could have far-reaching effects on the pupil. Year after year the greatest discussion and most difficult decisions concern whether or not to continue with mathematics. At the end of the Standard 7 year, the pupil is faced with a choice of subjects, one of which is usually mathematics. Depending on the school, this choice is often wide and the average Standard 7 pupil can, in spite of careful counselling and advice, still be bewildered and confused. One of the best methods of objectively predicting pupil performance is through the use of various standardised tests. Although some norm-based tests exist, very few schools apply these tests to help predict mathematics performance in the Senior Secondary Course. To aid the pupil in deciding whether or not mathematics should be taken in Standards 8, 9 and 10 it would be extremely useful if there were some guide or predictor on which this decision could be based, as it is generally accepted amongst teachers that mathematics can be a stumbling block in the Cape Senior Certificate, particularly by the weaker candidate. If it could be shown that the Standard 7 year-end mathematics mark could be used to help predict whether :- •the pupil would be likely to pass or fail mathematics in the Cape Senior Certificate; •what symbol the pupil would obtain; a decision as to whether or not he should continue with the subject could be made at this stage, and, depending on his Standard 7 mark, what the likely consequences of this decision would be. In the United Kingdom in particular, the use of A-level examination results have been used as predictors in subsequent educational courses and this has been the subject of fairly extensive research during the 1970's. The extent to which O-level examination results are predictive of A-level achievement has, however, received very little attention. The situation in South Africa is very similar and very little, if any, work has been done in assessing the effectiveness of using school marks in the lower standards of high school to predict marks in the upper standards. It is difficult to suggest a reason for this as such work would be of inestimable value in providing information for use in the counselling and selection of subjects for pupils embarking on the Senior Secondary Course.
- Full Text:
- Date Issued: 1984
- Authors: Viljoen, Richard Antony
- Date: 1984
- Subjects: Mathematics -- Study and teaching (Secondary) Mathematics -- Study and teaching (Secondary) -- South Africa -- East London School children -- South Africa -- East London Mathematical ability Examinations -- South Africa -- Evaluation
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1830 , http://hdl.handle.net/10962/d1003749
- Description: From Introduction: As the headmaster of a large co-educational High School in East London, I have to counsel Standard 7 pupils at the end of each year with regard to their subject choices for the Senior Secondary phase. In consultation with the teacher-psychologists and the Standard 7 teachers, one has to make decisions with regard to subjects which could have far-reaching effects on the pupil. Year after year the greatest discussion and most difficult decisions concern whether or not to continue with mathematics. At the end of the Standard 7 year, the pupil is faced with a choice of subjects, one of which is usually mathematics. Depending on the school, this choice is often wide and the average Standard 7 pupil can, in spite of careful counselling and advice, still be bewildered and confused. One of the best methods of objectively predicting pupil performance is through the use of various standardised tests. Although some norm-based tests exist, very few schools apply these tests to help predict mathematics performance in the Senior Secondary Course. To aid the pupil in deciding whether or not mathematics should be taken in Standards 8, 9 and 10 it would be extremely useful if there were some guide or predictor on which this decision could be based, as it is generally accepted amongst teachers that mathematics can be a stumbling block in the Cape Senior Certificate, particularly by the weaker candidate. If it could be shown that the Standard 7 year-end mathematics mark could be used to help predict whether :- •the pupil would be likely to pass or fail mathematics in the Cape Senior Certificate; •what symbol the pupil would obtain; a decision as to whether or not he should continue with the subject could be made at this stage, and, depending on his Standard 7 mark, what the likely consequences of this decision would be. In the United Kingdom in particular, the use of A-level examination results have been used as predictors in subsequent educational courses and this has been the subject of fairly extensive research during the 1970's. The extent to which O-level examination results are predictive of A-level achievement has, however, received very little attention. The situation in South Africa is very similar and very little, if any, work has been done in assessing the effectiveness of using school marks in the lower standards of high school to predict marks in the upper standards. It is difficult to suggest a reason for this as such work would be of inestimable value in providing information for use in the counselling and selection of subjects for pupils embarking on the Senior Secondary Course.
- Full Text:
- Date Issued: 1984
Applying a framework for IT governance in South African higher education institutions
- Authors: Viljoen, Stephen
- Date: 2005
- Subjects: Computer security , Universities and colleges -- Computer networks -- Security measures -- South Africa , Data protection
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9739 , http://hdl.handle.net/10948/416 , Computer security , Universities and colleges -- Computer networks -- Security measures -- South Africa , Data protection
- Description: Background: Higher Education (HE), through HE Institutions, plays a very important role in society. There is thus a need for this sector to be well managed, especially with regards to planning, organising, and controlling. Corporate Governance has received a lot of attention in recent times, especially to engender trust on the part of the stakeholders. There are many similarities, but also significant differences in the governance of HE institutions and public companies. Information Technology (IT) plays an extremely important role in the modern organisation, creating huge opportunities, but also increasing the risk to the organisation. Therefore, effective governance of IT in HE Institutions is of great importance.
- Full Text:
- Date Issued: 2005
- Authors: Viljoen, Stephen
- Date: 2005
- Subjects: Computer security , Universities and colleges -- Computer networks -- Security measures -- South Africa , Data protection
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9739 , http://hdl.handle.net/10948/416 , Computer security , Universities and colleges -- Computer networks -- Security measures -- South Africa , Data protection
- Description: Background: Higher Education (HE), through HE Institutions, plays a very important role in society. There is thus a need for this sector to be well managed, especially with regards to planning, organising, and controlling. Corporate Governance has received a lot of attention in recent times, especially to engender trust on the part of the stakeholders. There are many similarities, but also significant differences in the governance of HE institutions and public companies. Information Technology (IT) plays an extremely important role in the modern organisation, creating huge opportunities, but also increasing the risk to the organisation. Therefore, effective governance of IT in HE Institutions is of great importance.
- Full Text:
- Date Issued: 2005
Geology, structure and mineralization of the Onguati area, Karibib district, central Namibia
- Authors: Viljoen, Wayne
- Date: 2005
- Subjects: Geology -- Namibia -- Karibib , Geology, Structural -- Namibia -- Karibib , Mines and mineral resources -- Namibia -- Karibib
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4964 , http://hdl.handle.net/10962/d1005576 , Geology -- Namibia -- Karibib , Geology, Structural -- Namibia -- Karibib , Mines and mineral resources -- Namibia -- Karibib
- Description: The study area is situated in the Southern Central Zone of the intracontinental Pan-African Damara Orogen, approximately 20km NNE of Navachab Gold Mine in the Karibib district of Namibia. Mesothermal vein systems with Cu-Fe±Au mineralization are hosted by amphibolite facies calcitic and dolomitic marbles belonging to the Navachab Member of the Karibib Formation, and are best developed around the defunct Onguati Copper Mine, Brown Mountain and Western Workings areas. The Onguati study area is located in the saddle region of a moderately-to-gently inclined anticlinorium that experienced significant flattening during NNW-SSE-directed compression. The parallelogram arrangement of ENE- and NNE-trending thrusts and reverse faults that surround the Onguati study area may have developed when the direction of greatest principle subregional stress was oriented WSW-ESE. These structures define part of a Riedel shear system and later faults may have developed in the position of R and P shears respectively. Significant strain partitioning occurred between the ductile calcitic marbles which host the best developed, shear-related vein systems and the more competent dolomitic marbles. The thickness distributions of veins in the marbles of the Onguati Mine, Brown Mountain and Western Workings areas conform to a fractal or power-law distribution, The most intensely mineralized vein systems in the Onguati Mine and Western Workings calcitic marbles share similar low fractal dimensions (D-values) of 0.41 and 0.37 respectively. Veins In the calcitic and dolomitic marbles of the Brown Mountain area and in the dolomitic marbles of Western Workings have elevated D-values (>0.60) and are poorly mineralized. The low D-values «0.40) of the well mineralized vein systems reflect the higher degree of fracture connectivity. These vein systems were capable of efficiently draining and localizing large volumes of mineralizing fluids from crustal-scale structures. A metamorphic devolatization model is proposed where the entire Damaran metasedimentary and meta-volcanic package is seen as a large source area of very low concentrations of Cu, Au and other metals. Localization of deformation into crustal-scale faults and shear zones led to regional-scale hydrothermal fluid flow and focussing into the upstream fracture networks of the Onguati study area. Strong mineralization resulted when fluids encountered the reactive marble lithologies
- Full Text:
- Date Issued: 2005
- Authors: Viljoen, Wayne
- Date: 2005
- Subjects: Geology -- Namibia -- Karibib , Geology, Structural -- Namibia -- Karibib , Mines and mineral resources -- Namibia -- Karibib
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4964 , http://hdl.handle.net/10962/d1005576 , Geology -- Namibia -- Karibib , Geology, Structural -- Namibia -- Karibib , Mines and mineral resources -- Namibia -- Karibib
- Description: The study area is situated in the Southern Central Zone of the intracontinental Pan-African Damara Orogen, approximately 20km NNE of Navachab Gold Mine in the Karibib district of Namibia. Mesothermal vein systems with Cu-Fe±Au mineralization are hosted by amphibolite facies calcitic and dolomitic marbles belonging to the Navachab Member of the Karibib Formation, and are best developed around the defunct Onguati Copper Mine, Brown Mountain and Western Workings areas. The Onguati study area is located in the saddle region of a moderately-to-gently inclined anticlinorium that experienced significant flattening during NNW-SSE-directed compression. The parallelogram arrangement of ENE- and NNE-trending thrusts and reverse faults that surround the Onguati study area may have developed when the direction of greatest principle subregional stress was oriented WSW-ESE. These structures define part of a Riedel shear system and later faults may have developed in the position of R and P shears respectively. Significant strain partitioning occurred between the ductile calcitic marbles which host the best developed, shear-related vein systems and the more competent dolomitic marbles. The thickness distributions of veins in the marbles of the Onguati Mine, Brown Mountain and Western Workings areas conform to a fractal or power-law distribution, The most intensely mineralized vein systems in the Onguati Mine and Western Workings calcitic marbles share similar low fractal dimensions (D-values) of 0.41 and 0.37 respectively. Veins In the calcitic and dolomitic marbles of the Brown Mountain area and in the dolomitic marbles of Western Workings have elevated D-values (>0.60) and are poorly mineralized. The low D-values «0.40) of the well mineralized vein systems reflect the higher degree of fracture connectivity. These vein systems were capable of efficiently draining and localizing large volumes of mineralizing fluids from crustal-scale structures. A metamorphic devolatization model is proposed where the entire Damaran metasedimentary and meta-volcanic package is seen as a large source area of very low concentrations of Cu, Au and other metals. Localization of deformation into crustal-scale faults and shear zones led to regional-scale hydrothermal fluid flow and focussing into the upstream fracture networks of the Onguati study area. Strong mineralization resulted when fluids encountered the reactive marble lithologies
- Full Text:
- Date Issued: 2005
Bayile
- Villagers from Dabi's location near Peddie, Hugh Tracey
- Authors: Villagers from Dabi's location near Peddie , Hugh Tracey
- Date: 1957
- Subjects: Folk music--Africa , Folk music--South Africa , Field recordings , Xhosa (African people) , Africa South Africa Peddie f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/149190 , vital:38813 , International Library of African Music, Rhodes University, Grahamstown, South Africa , TR059-05
- Description: The words of this song make no sense. The people of this district are actually Fingo or Mfengu but speak Ngqika. Their ancestors were refugees from Shaka and came here from Swaziland over 120 years ago. The song is sung before initiation, when the young man is old enough to undergo his ordeal. Circumcision song with clapping.
- Full Text: false
- Date Issued: 1957
- Authors: Villagers from Dabi's location near Peddie , Hugh Tracey
- Date: 1957
- Subjects: Folk music--Africa , Folk music--South Africa , Field recordings , Xhosa (African people) , Africa South Africa Peddie f-sa
- Language: Xhosa
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/149190 , vital:38813 , International Library of African Music, Rhodes University, Grahamstown, South Africa , TR059-05
- Description: The words of this song make no sense. The people of this district are actually Fingo or Mfengu but speak Ngqika. Their ancestors were refugees from Shaka and came here from Swaziland over 120 years ago. The song is sung before initiation, when the young man is old enough to undergo his ordeal. Circumcision song with clapping.
- Full Text: false
- Date Issued: 1957