The meaning of place of 'effective management' in the context of South African domestic tax law
- Authors: Daniels, Paul
- Date: 2012
- Subjects: Double taxation -- Treaties , Management
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8960 , http://hdl.handle.net/10948/d1018822
- Description: South Africa has a residence based system of taxation in which South African tax residents are taxed on their worldwide income. A company or other artificial person is regarded as a South African resident for tax purposes if it is incorporated, established or formed in South Africa or if its ‗effective management‘ is located in South Africa. Where a tax treaty determines in terms of its tie breaker rule that an artificial person is not resident in South Africa for treaty purposes, the company will also not be regarded as a tax resident in terms of South African domestic law. Treaties to which South Africa is party will often use the effective management‘ as the tie-breaker where a person other than an individual is resident in both Contracting states in terms of the respective states‘ domestic laws. The tests of ‗incorporation, established and formed‘ provide simplicity and certainty to governments but are easily open to manipulation by taxpayers. Therefore, the legislature found it necessary to incorporate effective management‘ as a test for residency into the Act. Effective management‘ is a substance over form concept which be described as a function which embodies the periodic, most senior executive management functions, which are required for the management of the affairs of the entity as whole. The test of effective management‘ by its very nature is concerned with where the crucial decisions are made in order to make a business function. To identify the location of effective management‘ it is necessary to enquire who calls the shots‘ in the context of the management of the company as opposed to who controls the company notwithstanding that there may in certain instances be overlap between the two functions. It is submitted that any person who, on the face of it seems unconnected to a company, could effectively manage‘ a company if that person is, in substance, responsible for the most senior executive management functions of the company. The discussion paper issued by SARS recognises the principal difficulties experienced with its current interpretation of the concept and makes valuable points, concessions and recommendations. It also recognised that the 'calling of shots' by the most senior executive is a critical marker of effective management‘ and that control of a company is irrelevant in determining effective management‘. To determine who effectively manages‘ a company each situation would have to be analysed on its own as it is not possible to create a definitive rule on the concept. In many cases the nature of the entity and its modus operandi would have to be taken into account to determine effective management.
- Full Text:
- Date Issued: 2012
- Authors: Daniels, Paul
- Date: 2012
- Subjects: Double taxation -- Treaties , Management
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8960 , http://hdl.handle.net/10948/d1018822
- Description: South Africa has a residence based system of taxation in which South African tax residents are taxed on their worldwide income. A company or other artificial person is regarded as a South African resident for tax purposes if it is incorporated, established or formed in South Africa or if its ‗effective management‘ is located in South Africa. Where a tax treaty determines in terms of its tie breaker rule that an artificial person is not resident in South Africa for treaty purposes, the company will also not be regarded as a tax resident in terms of South African domestic law. Treaties to which South Africa is party will often use the effective management‘ as the tie-breaker where a person other than an individual is resident in both Contracting states in terms of the respective states‘ domestic laws. The tests of ‗incorporation, established and formed‘ provide simplicity and certainty to governments but are easily open to manipulation by taxpayers. Therefore, the legislature found it necessary to incorporate effective management‘ as a test for residency into the Act. Effective management‘ is a substance over form concept which be described as a function which embodies the periodic, most senior executive management functions, which are required for the management of the affairs of the entity as whole. The test of effective management‘ by its very nature is concerned with where the crucial decisions are made in order to make a business function. To identify the location of effective management‘ it is necessary to enquire who calls the shots‘ in the context of the management of the company as opposed to who controls the company notwithstanding that there may in certain instances be overlap between the two functions. It is submitted that any person who, on the face of it seems unconnected to a company, could effectively manage‘ a company if that person is, in substance, responsible for the most senior executive management functions of the company. The discussion paper issued by SARS recognises the principal difficulties experienced with its current interpretation of the concept and makes valuable points, concessions and recommendations. It also recognised that the 'calling of shots' by the most senior executive is a critical marker of effective management‘ and that control of a company is irrelevant in determining effective management‘. To determine who effectively manages‘ a company each situation would have to be analysed on its own as it is not possible to create a definitive rule on the concept. In many cases the nature of the entity and its modus operandi would have to be taken into account to determine effective management.
- Full Text:
- Date Issued: 2012
Efficacy of organic and synthetic insecticides on the control of cotton pests: The bollworm complex, Helicoverpa armigera, Diparopsis castanea, Earias insulana (Noctuidae) and the leafhopper, Jacobiell
- Malinga, Lawrence Nkosikhona
- Authors: Malinga, Lawrence Nkosikhona
- Date: 2012
- Language: English
- Type: Thesis , Masters , MSc (Zoology)
- Identifier: vital:11791 , http://hdl.handle.net/10353/d1006798
- Description: A research was conducted on cotton to test different plant extracts with potential insecticidal properties against bollworms (Noctuidae) and leafhoppers (Cicadellidae) for the use by small-scale, cotton farmers. The study was carried out during the 2006/07 and 2007/08 seasons at ARC Institute for Industrial Crops, Rustenburg (25°39.0 S, 27°14.4 E) in the North West Province of South Africa. Four organic insecticides, tobacco (Nicotiana tabacium), khaki weed (Tagetes minuta), thorn apple (Datura stramonium) and garlic (Allium sativum) were compared with two chemical treatments, Mospilan® (acetamiprid) and Decis® (deltamethrin), and an untreated control. The cultivar, DeltaOPAL, was planted and the trial conducted using standard practices. Overall, Decis® and tobacco treatments exhibited significantly less bollworm larvae than the other treatments. Tobacco was the most promising biological pesticide against American bollworm (Helicoverpa armigera) and spiny bollworm (Earias insulana) larvae. All the treatments were significantly effective against the red bollworm (Diparopsis castanea) larvae, but Decis® and Mospilan® provided the best control. Although khaki weed, garlic and thorn apple were promising biological pesticides against the bollworm complex, tobacco was the most effective organic treatment. Mospilan® seemed to be more effective on the control of leafhoppers (Jacobiella fascialis), followed by Decis® and tobacco. Among the plant extracts, tobacco and garlic gave higher seed cotton yields compared to the khaki weed and thorn apple during both study seasons. In 2006/07, none of the treatments reached the corresponding economic threshold levels (ETLs). In contrast, in 2007/08, only rarely were the treatments (mostly Decis® and Mospilan®) below the corresponding ETLs. These differences were attributed to the higher rainfall recorded during the 2007/08 season, which reduced the effectiveness of the treatments by partly washing away the pesticidal applications. In addition, a high weed infestation also created competition for nutrients in the soil, thus resulting in lower (0.50-1.25 ton/ha in 2007/08 vs 2.50-5.00 ton/ha in 2006/07), but acceptable cotton seed yields. In conclusion, it is suggested that some plant extracts (particularly from tobacco and garlic) can be used as a cheaper and more environment-friendly alternative to chemical insecticides for the control of bollworms and leafhoppers, although it has been demonstrated that their efficacy do not reach the one of chemical treatments. Further research in the near future is recommended.
- Full Text:
- Date Issued: 2012
- Authors: Malinga, Lawrence Nkosikhona
- Date: 2012
- Language: English
- Type: Thesis , Masters , MSc (Zoology)
- Identifier: vital:11791 , http://hdl.handle.net/10353/d1006798
- Description: A research was conducted on cotton to test different plant extracts with potential insecticidal properties against bollworms (Noctuidae) and leafhoppers (Cicadellidae) for the use by small-scale, cotton farmers. The study was carried out during the 2006/07 and 2007/08 seasons at ARC Institute for Industrial Crops, Rustenburg (25°39.0 S, 27°14.4 E) in the North West Province of South Africa. Four organic insecticides, tobacco (Nicotiana tabacium), khaki weed (Tagetes minuta), thorn apple (Datura stramonium) and garlic (Allium sativum) were compared with two chemical treatments, Mospilan® (acetamiprid) and Decis® (deltamethrin), and an untreated control. The cultivar, DeltaOPAL, was planted and the trial conducted using standard practices. Overall, Decis® and tobacco treatments exhibited significantly less bollworm larvae than the other treatments. Tobacco was the most promising biological pesticide against American bollworm (Helicoverpa armigera) and spiny bollworm (Earias insulana) larvae. All the treatments were significantly effective against the red bollworm (Diparopsis castanea) larvae, but Decis® and Mospilan® provided the best control. Although khaki weed, garlic and thorn apple were promising biological pesticides against the bollworm complex, tobacco was the most effective organic treatment. Mospilan® seemed to be more effective on the control of leafhoppers (Jacobiella fascialis), followed by Decis® and tobacco. Among the plant extracts, tobacco and garlic gave higher seed cotton yields compared to the khaki weed and thorn apple during both study seasons. In 2006/07, none of the treatments reached the corresponding economic threshold levels (ETLs). In contrast, in 2007/08, only rarely were the treatments (mostly Decis® and Mospilan®) below the corresponding ETLs. These differences were attributed to the higher rainfall recorded during the 2007/08 season, which reduced the effectiveness of the treatments by partly washing away the pesticidal applications. In addition, a high weed infestation also created competition for nutrients in the soil, thus resulting in lower (0.50-1.25 ton/ha in 2007/08 vs 2.50-5.00 ton/ha in 2006/07), but acceptable cotton seed yields. In conclusion, it is suggested that some plant extracts (particularly from tobacco and garlic) can be used as a cheaper and more environment-friendly alternative to chemical insecticides for the control of bollworms and leafhoppers, although it has been demonstrated that their efficacy do not reach the one of chemical treatments. Further research in the near future is recommended.
- Full Text:
- Date Issued: 2012
Plantar pressure and impulse profiles of students from a South African university
- Authors: Kramer, Mark
- Date: 2012
- Subjects: Human mechanics , Foot -- Movements , Joints -- ange of motion , eng
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10095 , http://hdl.handle.net/10948/d1010606 , Human mechanics , Foot -- Movements , Joints -- ange of motion
- Description: Most activities of daily living and numerous modes of physical activity incorporate some form of ambulation, of which the foot and ankle constitute the first link in the kinetic chain. A change in foot or ankle structure may therefore have subsequent effects on the superincumbent joints of the human body such as the knee, hip and lower back. Plantar pressure and impulse measurements can therefore provide greater insight into the mechanics of the foot under load-bearing conditions with regards to the areas and regions of the foot that exhibit the largest pressure values and impulse figures. Hence, it is of importance to establish normative data so as to obtain a frame of reference to identify those individuals that fall outside these norms and may exhibit a larger probability of injury. Aim and Objectives: The primary aim was to identify and compare the plantar pressure distribution patterns and impulse values of students of a South African university of different gender and race groups. To realise this aim two specific objectives were set. The first was to determine whether height, weight, body mass index (BMI), gender, race, and the level of physical activity were related to the pressure and impulse values obtained, and the second was to generate reference tables from the normative data gathered. Method: The RS Footscan system was used to measure the pressure and impulse values of the foot. The characteristics that were analysed were height, weight, body mass index and the level of physical activity of the participant and their respective association with plantar pressure and impulse values obtained. This information was then used to establish normative data. A quasi-experimental study design utilising convenience sampling was implemented as the intention was to investigate as single instance in as natural a manner as possible. Convenience sampling was used with predefined inclusion and exclusion criteria. A total of 180 participants were utilised in this study and were subdivided as follows: Gender: Males (n = 90); Females (n = 90); Race: African black (n = 60); white (n = 60) and coloured (n = 60). Each race group therefore comprised of 30 males and 30 females respectively. The anthropometric profile of participants was as follows: Age (S.D.) = 22.21 (S.D. ± 2.93) years; Height (S.D.) = 169.69 (S.D. ± 8.91) cm; Weight (S.D.) = 66.97 (S.D. ± 12.01) kg; BMI (S.D.) = 23.16 (S.D. ± 3.15) kg/m2. Participants were asked to complete a questionnaire prior to testing that would identify all exclusion criteria consisting of: the presence of foot pain or deformity, acute lower extremity trauma, lower extremity surgery, exhibited problems of performance including eye, ear or cognitive impairment, diabetes mellitus or other neurological neuropathy, or the use of walking aids. Anthropometric measurements were then taken for those participants that qualified for the study. Participants were required to perform approximately five warm-up trials to familiarise themselves with the testing equipment before testing commenced. A total of ten successful trails were subsequently recorded for each participant, with three footprints being recorded per trial on the pressure platform, thereby comprising 30 footprints (15 left foot and 15 right foot) per participant that were analysed regarding pressure and impulse values. The two-step gait initiation protocol was implemented which was proven to be a valid and reliable means of assessing gait. Participants were instructed to walk at a comfortable walking speed between 1.19 – 1.60 m/s to ensure conformity between all participants as between-trial gait velocities were proven to be significantly variable. The foot was subdivided into ten anatomical areas focusing on the great toe, lesser toes, metatarsal 1, metatarsal 2, metatarsal 3, metatarsal 4, metatarsal 5, midfoot, medial heel and lateral heel. These ten areas were then grouped into one of three regions, namely the forefoot region (great toe, lesser toes, and all five metatarsal head areas), midfoot region (midfoot area), and rearfoot/heel region (medial and lateral heel areas). Once all relevant data was gathered, corrected and analysed it was used to establish normative data tables pertaining to the various gender and race groups. Results: Of the ten individual pressure and impulse areas, the second and third metatarsal heads demonstrated the highest mean peak pressure and impulse values. Once grouped into one of the three regions, the heel region was ascribed with the largest impulse and pressure values. It was established that statistically and practically significant racial pressure differences were apparent in the left and right forefoot and midfoot regions, with black and coloured individuals yielding the highest values, whereas white participants yielded the lowest. The same was true with regards to impulse figures in that both statistical and practical significant levels were established in the forefoot and midfoot regions. Black and coloured participants exhibited larger impulse values than the white participants. The level of physical activity was found to be associated with both pressure and impulse values over the various regions of the foot. Black individuals that were largely inactive as well as moderately active coloured participants yielded the highest pressure and impulse values, which were found to be statistically and practically significant over the forefoot regions. Conversely, white participants of all physical activity levels as well as coloured participants of both low and high physical activity levels exhibited the lowest pressure values over the forefoot region, which were also found to be statistically and practically significant. The anthropometric variables of height, weight and BMI were found to relate statistically to pressure and impulse values under the various regions of the foot, but none were found to be of any practical significance (r < .30). Conclusion: It was clearly established that both gender and race specific differences existed regarding plantar pressure and impulse values of the normal foot. Plantar pressure and impulse values were also associated with the level of physical activity of the individual, thereby indicating that the level of physical activity could be a contributing factor to altered pressure and impulse values. Anthropometric variables such as height, weight and BMI could not solely account for the variances observed in pressure and impulse. Further research is required to determine whether pressure or impulse values above or below those obtained predispose an individual to injury and to contrast between various activity or sporting codes and the effect of these on plantar pressure and impulse figures. Finally, from the collected data one was able to establish reference tables for the specific gender and race groups for both plantar pressure and impulse values. This enables one to classify individuals based on the pressure and impulse values generated.
- Full Text:
- Date Issued: 2012
- Authors: Kramer, Mark
- Date: 2012
- Subjects: Human mechanics , Foot -- Movements , Joints -- ange of motion , eng
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10095 , http://hdl.handle.net/10948/d1010606 , Human mechanics , Foot -- Movements , Joints -- ange of motion
- Description: Most activities of daily living and numerous modes of physical activity incorporate some form of ambulation, of which the foot and ankle constitute the first link in the kinetic chain. A change in foot or ankle structure may therefore have subsequent effects on the superincumbent joints of the human body such as the knee, hip and lower back. Plantar pressure and impulse measurements can therefore provide greater insight into the mechanics of the foot under load-bearing conditions with regards to the areas and regions of the foot that exhibit the largest pressure values and impulse figures. Hence, it is of importance to establish normative data so as to obtain a frame of reference to identify those individuals that fall outside these norms and may exhibit a larger probability of injury. Aim and Objectives: The primary aim was to identify and compare the plantar pressure distribution patterns and impulse values of students of a South African university of different gender and race groups. To realise this aim two specific objectives were set. The first was to determine whether height, weight, body mass index (BMI), gender, race, and the level of physical activity were related to the pressure and impulse values obtained, and the second was to generate reference tables from the normative data gathered. Method: The RS Footscan system was used to measure the pressure and impulse values of the foot. The characteristics that were analysed were height, weight, body mass index and the level of physical activity of the participant and their respective association with plantar pressure and impulse values obtained. This information was then used to establish normative data. A quasi-experimental study design utilising convenience sampling was implemented as the intention was to investigate as single instance in as natural a manner as possible. Convenience sampling was used with predefined inclusion and exclusion criteria. A total of 180 participants were utilised in this study and were subdivided as follows: Gender: Males (n = 90); Females (n = 90); Race: African black (n = 60); white (n = 60) and coloured (n = 60). Each race group therefore comprised of 30 males and 30 females respectively. The anthropometric profile of participants was as follows: Age (S.D.) = 22.21 (S.D. ± 2.93) years; Height (S.D.) = 169.69 (S.D. ± 8.91) cm; Weight (S.D.) = 66.97 (S.D. ± 12.01) kg; BMI (S.D.) = 23.16 (S.D. ± 3.15) kg/m2. Participants were asked to complete a questionnaire prior to testing that would identify all exclusion criteria consisting of: the presence of foot pain or deformity, acute lower extremity trauma, lower extremity surgery, exhibited problems of performance including eye, ear or cognitive impairment, diabetes mellitus or other neurological neuropathy, or the use of walking aids. Anthropometric measurements were then taken for those participants that qualified for the study. Participants were required to perform approximately five warm-up trials to familiarise themselves with the testing equipment before testing commenced. A total of ten successful trails were subsequently recorded for each participant, with three footprints being recorded per trial on the pressure platform, thereby comprising 30 footprints (15 left foot and 15 right foot) per participant that were analysed regarding pressure and impulse values. The two-step gait initiation protocol was implemented which was proven to be a valid and reliable means of assessing gait. Participants were instructed to walk at a comfortable walking speed between 1.19 – 1.60 m/s to ensure conformity between all participants as between-trial gait velocities were proven to be significantly variable. The foot was subdivided into ten anatomical areas focusing on the great toe, lesser toes, metatarsal 1, metatarsal 2, metatarsal 3, metatarsal 4, metatarsal 5, midfoot, medial heel and lateral heel. These ten areas were then grouped into one of three regions, namely the forefoot region (great toe, lesser toes, and all five metatarsal head areas), midfoot region (midfoot area), and rearfoot/heel region (medial and lateral heel areas). Once all relevant data was gathered, corrected and analysed it was used to establish normative data tables pertaining to the various gender and race groups. Results: Of the ten individual pressure and impulse areas, the second and third metatarsal heads demonstrated the highest mean peak pressure and impulse values. Once grouped into one of the three regions, the heel region was ascribed with the largest impulse and pressure values. It was established that statistically and practically significant racial pressure differences were apparent in the left and right forefoot and midfoot regions, with black and coloured individuals yielding the highest values, whereas white participants yielded the lowest. The same was true with regards to impulse figures in that both statistical and practical significant levels were established in the forefoot and midfoot regions. Black and coloured participants exhibited larger impulse values than the white participants. The level of physical activity was found to be associated with both pressure and impulse values over the various regions of the foot. Black individuals that were largely inactive as well as moderately active coloured participants yielded the highest pressure and impulse values, which were found to be statistically and practically significant over the forefoot regions. Conversely, white participants of all physical activity levels as well as coloured participants of both low and high physical activity levels exhibited the lowest pressure values over the forefoot region, which were also found to be statistically and practically significant. The anthropometric variables of height, weight and BMI were found to relate statistically to pressure and impulse values under the various regions of the foot, but none were found to be of any practical significance (r < .30). Conclusion: It was clearly established that both gender and race specific differences existed regarding plantar pressure and impulse values of the normal foot. Plantar pressure and impulse values were also associated with the level of physical activity of the individual, thereby indicating that the level of physical activity could be a contributing factor to altered pressure and impulse values. Anthropometric variables such as height, weight and BMI could not solely account for the variances observed in pressure and impulse. Further research is required to determine whether pressure or impulse values above or below those obtained predispose an individual to injury and to contrast between various activity or sporting codes and the effect of these on plantar pressure and impulse figures. Finally, from the collected data one was able to establish reference tables for the specific gender and race groups for both plantar pressure and impulse values. This enables one to classify individuals based on the pressure and impulse values generated.
- Full Text:
- Date Issued: 2012
Public participation in integrated development planning, New Brighton, Nelson Mandela Bay Municipality : 2006-2010
- Authors: Mbewana, Stembiso Matthews
- Date: 2012
- Subjects: Local government -- South Africa -- Port Elizabeth -- Citizen participation , Local governement -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8178 , http://hdl.handle.net/10948/1775 , Local government -- South Africa -- Port Elizabeth -- Citizen participation , Local governement -- South Africa -- Port Elizabeth
- Description: The most important difference between the new form of local government and that of the past is the creative and dynamic “developmental role” for local government to ensure maximum impact on poverty alleviation within resource constraints, and to address spatially entrenched socio‐economic inequalities. This needs to take place within the framework of integrated development planning, which is linked to the annual budgeting cycles. The IDP process is intended to provide communities with opportunities for participation in articulating, monitoring, reviewing and evaluating their needs. The aim of the research was to establish to what extent cooperation between the communities and the ward committees in the ward of New Brighton exists, with specific reference to consultation and participation in terms of IDP. A qualitative study was undertaken and literature review on public participation in terms of the IDP was conducted. Relevant secondary data was sourced and structured interviews were conducted with councillors representing New Brighton. Focus group interviews were also conducted with ward committee members from New Brighton. The research revealed that the priorities and genuine needs of the communities were often ignored by the Nelson Mandela Bay Municipality. There is no correlation between the genuine needs of the communities and those perceived to be the needs of the communities by the public officials. Challenges on public participation in IDP process were also found to be associated with the relationship between the councillors and public officials on what constitute the genuine needs of the communities.
- Full Text:
- Date Issued: 2012
- Authors: Mbewana, Stembiso Matthews
- Date: 2012
- Subjects: Local government -- South Africa -- Port Elizabeth -- Citizen participation , Local governement -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8178 , http://hdl.handle.net/10948/1775 , Local government -- South Africa -- Port Elizabeth -- Citizen participation , Local governement -- South Africa -- Port Elizabeth
- Description: The most important difference between the new form of local government and that of the past is the creative and dynamic “developmental role” for local government to ensure maximum impact on poverty alleviation within resource constraints, and to address spatially entrenched socio‐economic inequalities. This needs to take place within the framework of integrated development planning, which is linked to the annual budgeting cycles. The IDP process is intended to provide communities with opportunities for participation in articulating, monitoring, reviewing and evaluating their needs. The aim of the research was to establish to what extent cooperation between the communities and the ward committees in the ward of New Brighton exists, with specific reference to consultation and participation in terms of IDP. A qualitative study was undertaken and literature review on public participation in terms of the IDP was conducted. Relevant secondary data was sourced and structured interviews were conducted with councillors representing New Brighton. Focus group interviews were also conducted with ward committee members from New Brighton. The research revealed that the priorities and genuine needs of the communities were often ignored by the Nelson Mandela Bay Municipality. There is no correlation between the genuine needs of the communities and those perceived to be the needs of the communities by the public officials. Challenges on public participation in IDP process were also found to be associated with the relationship between the councillors and public officials on what constitute the genuine needs of the communities.
- Full Text:
- Date Issued: 2012
Winston Leonard Spencer Churchill: a psychobiographical study
- Authors: Moolman, Bilué Anton
- Date: 2012
- Subjects: Churchill, Winston -- 1874-1965 , Psychology -- Biographical methods
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9903 , http://hdl.handle.net/10948/d1009434 , Churchill, Winston -- 1874-1965 , Psychology -- Biographical methods
- Description: Psychobiography is a qualitative approach to exploring and understanding the life story of an individual through the lens of psychological theory. The application of theory is typically conducted on the finished lives of well-known or enigmatic people. This study explores and describes the psychological development across the lifespan of Winston Leonard Spencer Churchill, by applying the Individual Psychology of Alfred Adler. Winston Churchill voted the greatest Briton of the twentieth century, was an author, painter, adventure, soldier, politician and Prime Minister that led the United Kingdom during World War Two. Extensive data has been examined in this work to ensure an accurate description of Winston Churchill‘s life. Alexander‘s model of identifying salient themes was used to analyse the data within a conceptual framework derived from the theory. Churchill‘s difficult childhood motivated him to succeed, his passion for the nation of Britain and his dislike of the Nazi regime meant that Churchill was always abreast with current affairs, anticipating every possible scenario of attack. When the time came to fight the Nazi‘s Churchill was ready to die for his country. The research findings highlight Churchill‘s ability to rise above his childhood stigmas and surpass all expectations and so cementing his name into the history of a country he loved and a democratic world he hoped for. Alfred Adler‘s Individual Psychology proposes that an individual‘s potential weaknesses can be used as a means to strive and achieve greatness within their sphere of influence.
- Full Text:
- Date Issued: 2012
- Authors: Moolman, Bilué Anton
- Date: 2012
- Subjects: Churchill, Winston -- 1874-1965 , Psychology -- Biographical methods
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9903 , http://hdl.handle.net/10948/d1009434 , Churchill, Winston -- 1874-1965 , Psychology -- Biographical methods
- Description: Psychobiography is a qualitative approach to exploring and understanding the life story of an individual through the lens of psychological theory. The application of theory is typically conducted on the finished lives of well-known or enigmatic people. This study explores and describes the psychological development across the lifespan of Winston Leonard Spencer Churchill, by applying the Individual Psychology of Alfred Adler. Winston Churchill voted the greatest Briton of the twentieth century, was an author, painter, adventure, soldier, politician and Prime Minister that led the United Kingdom during World War Two. Extensive data has been examined in this work to ensure an accurate description of Winston Churchill‘s life. Alexander‘s model of identifying salient themes was used to analyse the data within a conceptual framework derived from the theory. Churchill‘s difficult childhood motivated him to succeed, his passion for the nation of Britain and his dislike of the Nazi regime meant that Churchill was always abreast with current affairs, anticipating every possible scenario of attack. When the time came to fight the Nazi‘s Churchill was ready to die for his country. The research findings highlight Churchill‘s ability to rise above his childhood stigmas and surpass all expectations and so cementing his name into the history of a country he loved and a democratic world he hoped for. Alfred Adler‘s Individual Psychology proposes that an individual‘s potential weaknesses can be used as a means to strive and achieve greatness within their sphere of influence.
- Full Text:
- Date Issued: 2012
Evaluation of noise levels of micro-wind turbines using a randomised experiment
- Authors: Clohessy, Chantelle May
- Date: 2012
- Subjects: Wind turbines -- Noise , Wind turbines -- valuation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10508 , http://hdl.handle.net/10948/d1015974
- Description: One of the biggest environmental concerns of a wind turbine is the wind turbine noise (Prospathopoulos and Voutsinas, 2007). This study assesses the noise impacts of wind turbines on the environment by comparing the micro-wind turbine noise to traditional accepted surrounding sounds. The collection of the sound level data was done by using a randomised experiment. The sound level data was then fitted to a General Linear Model to determine the relationship between the sound levels generated at a given site to the time of day, wind speed, wind direction and distance from the sound source. An additional study was conducted to determine the relationship between wind speed and the sound levels of wind turbines. The distribution of frequency components of wind turbine sound was also determined.
- Full Text:
- Date Issued: 2012
- Authors: Clohessy, Chantelle May
- Date: 2012
- Subjects: Wind turbines -- Noise , Wind turbines -- valuation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10508 , http://hdl.handle.net/10948/d1015974
- Description: One of the biggest environmental concerns of a wind turbine is the wind turbine noise (Prospathopoulos and Voutsinas, 2007). This study assesses the noise impacts of wind turbines on the environment by comparing the micro-wind turbine noise to traditional accepted surrounding sounds. The collection of the sound level data was done by using a randomised experiment. The sound level data was then fitted to a General Linear Model to determine the relationship between the sound levels generated at a given site to the time of day, wind speed, wind direction and distance from the sound source. An additional study was conducted to determine the relationship between wind speed and the sound levels of wind turbines. The distribution of frequency components of wind turbine sound was also determined.
- Full Text:
- Date Issued: 2012
Development of molecularly imprinted polymer based solid phase extraction sorbents for the selective cleanup of food and pharmaceutical residue samples
- Authors: Batlokwa, Bareki Shima
- Date: 2012
- Subjects: Sorbents -- Research Nanofibers -- Research Aflatoxins -- Research Electrospinning -- Research Extraction (Chemistry) -- Research
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4309 , http://hdl.handle.net/10962/d1004967
- Description: This thesis presents the development of chlorophyll, cholic acid, aflatoxin B1 molecularly imprinted polymer (MIP) particles and cholic acid MIP nanofibers for application as selective solid phase extraction (SPE) sorbents. The particles were prepared by bulk polymerization and the nanofibers by a novel approach combining molecular imprinting and electrospinning technology. The AFB1 MIP particles were compared with an aflatoxin specific immunoextraction sorbent in cleaning-up and pre-concentrating aflatoxins from nut extracts. They both recorded high extraction efficiencies (EEs) of > 97 % in selectively extracting the aflatoxins (AFB1, AFB2, AFG1 and AFG2). High reproducibility marked by the low %RSDs of < 1% and low LODs of ≤ 0.02 ng/g were calculated in all cases. The LODs were within the monitoring requirements of the European Commission. The results were validated with a peanut butter certified reference material. The chlorophyll MIP on the other hand selectively removed chlorophyll that would otherwise interfere during pesticide residue analysis (PRA) from > 0.6 to <0.09 Au in green plants extracts. The extracted chlorophyll was removed to far below the level of ≥ 0.399 Au that is usually associated with interference during PRA. Furthermore, the MIP demonstrated better selectivity by removing only chlorophyll (> 99%) in the presence of planar pesticides than the currently employed graphitized carbon black (GCB) that removed both the chlorophyll (> 88%) and planar pesticides (> 89%). For the interfering cholic acid during drug residue analysis, cholic acid MIP electrospun nanofibers demonstrated to be more sensitive and possessing higher loading capacity than the MIP particles. 100% cholic acid was removed by the nanofibers from standard solutions relative to 80% by the particles. This showed that the nanofibers have better performance than the micro particles and as such have potential to replace the particle based SPE sorbents that are currently in use. All the templates were optimally removed from the prepared MIPs by employing a novel pressurized hot water extraction template removal method that was used for the first time in this thesis. The method employed only water, an environmentally friendly solvent to remove templates to ≥ 99.6% with template residual bleeding of ≤ 0.02%.
- Full Text:
- Date Issued: 2012
- Authors: Batlokwa, Bareki Shima
- Date: 2012
- Subjects: Sorbents -- Research Nanofibers -- Research Aflatoxins -- Research Electrospinning -- Research Extraction (Chemistry) -- Research
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4309 , http://hdl.handle.net/10962/d1004967
- Description: This thesis presents the development of chlorophyll, cholic acid, aflatoxin B1 molecularly imprinted polymer (MIP) particles and cholic acid MIP nanofibers for application as selective solid phase extraction (SPE) sorbents. The particles were prepared by bulk polymerization and the nanofibers by a novel approach combining molecular imprinting and electrospinning technology. The AFB1 MIP particles were compared with an aflatoxin specific immunoextraction sorbent in cleaning-up and pre-concentrating aflatoxins from nut extracts. They both recorded high extraction efficiencies (EEs) of > 97 % in selectively extracting the aflatoxins (AFB1, AFB2, AFG1 and AFG2). High reproducibility marked by the low %RSDs of < 1% and low LODs of ≤ 0.02 ng/g were calculated in all cases. The LODs were within the monitoring requirements of the European Commission. The results were validated with a peanut butter certified reference material. The chlorophyll MIP on the other hand selectively removed chlorophyll that would otherwise interfere during pesticide residue analysis (PRA) from > 0.6 to <0.09 Au in green plants extracts. The extracted chlorophyll was removed to far below the level of ≥ 0.399 Au that is usually associated with interference during PRA. Furthermore, the MIP demonstrated better selectivity by removing only chlorophyll (> 99%) in the presence of planar pesticides than the currently employed graphitized carbon black (GCB) that removed both the chlorophyll (> 88%) and planar pesticides (> 89%). For the interfering cholic acid during drug residue analysis, cholic acid MIP electrospun nanofibers demonstrated to be more sensitive and possessing higher loading capacity than the MIP particles. 100% cholic acid was removed by the nanofibers from standard solutions relative to 80% by the particles. This showed that the nanofibers have better performance than the micro particles and as such have potential to replace the particle based SPE sorbents that are currently in use. All the templates were optimally removed from the prepared MIPs by employing a novel pressurized hot water extraction template removal method that was used for the first time in this thesis. The method employed only water, an environmentally friendly solvent to remove templates to ≥ 99.6% with template residual bleeding of ≤ 0.02%.
- Full Text:
- Date Issued: 2012
Assessing entrepreneurship education programmes in secondary schools
- Authors: Qoto, Nomonde Monica
- Date: 2012
- Subjects: Entrepreneurship -- Study and teaching (Secondary) -- South Africa , Small business -- Management -- Study and teaching , Curriculum planning -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8826 , http://hdl.handle.net/10948/d1019726
- Description: The emergence of an entrepreneurial spirit is the most significant economic development in the twenty-first century. Entrepreneurship education was introduced in Grades 10-12 as part of the optional subject Business Studies. There are problems across the country encountered by educators in imparting entrepreneurship skills and knowledge to learners. The integration of entrepreneurial programmes into the education system in secondary schools is a prerequisite to develop the necessary skills to start and run a business successfully. It is the responsibility of the government to ensure that entrepreneurship education is included in the curriculum as a separate subject so as to develop the entrepreneurship skills at secondary school level. The formal employment sector is no longer able to provide jobs for the increasing number of unemployed people. Fewer jobs are available for the economically active population of the South African economy especially the school leavers. The primary objective of this study is to assess the current entrepreneurship education programmes offered at secondary schools in Grade 10-12 levels in Motherwell. The purpose is to learn from global trends and to improve the current entrepreneurship education programmes. A literature review was done to establish global trends and also South African trends concerning entrepreneurship education programmes. A mixed research approach and cluster sampling was used to select the twelve Motherwell senior secondary schools in the Motherwell township of Port Elizabeth. The findings of the study were that strategic skills, operational skills, competitions, labour entrepreneurial skills, management skills, creativity and innovation were taught to a limited extent by educators. The practical exposure of learners was deficient because of the limited involvement of local businesses and organisations. Learners were also not encouraged to operate simulated businesses. The study recommends that the Outcome Based Education, National Curriculum Statement and Curriculum Policy Statement which have been introduced by the Department of Education be followed but adjustments must be made to the iii teaching methods to follow the interactive approach required by entrepreneurship. Policy makers should incorporate comprehensive entrepreneurship education programmes from primary school to secondary school to vocational and university and adult education centres. Finally, entrepreneurship education should be offered as an optional separate subject to all learners and involvement of local businesses and organisations should be encouraged.
- Full Text:
- Date Issued: 2012
- Authors: Qoto, Nomonde Monica
- Date: 2012
- Subjects: Entrepreneurship -- Study and teaching (Secondary) -- South Africa , Small business -- Management -- Study and teaching , Curriculum planning -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8826 , http://hdl.handle.net/10948/d1019726
- Description: The emergence of an entrepreneurial spirit is the most significant economic development in the twenty-first century. Entrepreneurship education was introduced in Grades 10-12 as part of the optional subject Business Studies. There are problems across the country encountered by educators in imparting entrepreneurship skills and knowledge to learners. The integration of entrepreneurial programmes into the education system in secondary schools is a prerequisite to develop the necessary skills to start and run a business successfully. It is the responsibility of the government to ensure that entrepreneurship education is included in the curriculum as a separate subject so as to develop the entrepreneurship skills at secondary school level. The formal employment sector is no longer able to provide jobs for the increasing number of unemployed people. Fewer jobs are available for the economically active population of the South African economy especially the school leavers. The primary objective of this study is to assess the current entrepreneurship education programmes offered at secondary schools in Grade 10-12 levels in Motherwell. The purpose is to learn from global trends and to improve the current entrepreneurship education programmes. A literature review was done to establish global trends and also South African trends concerning entrepreneurship education programmes. A mixed research approach and cluster sampling was used to select the twelve Motherwell senior secondary schools in the Motherwell township of Port Elizabeth. The findings of the study were that strategic skills, operational skills, competitions, labour entrepreneurial skills, management skills, creativity and innovation were taught to a limited extent by educators. The practical exposure of learners was deficient because of the limited involvement of local businesses and organisations. Learners were also not encouraged to operate simulated businesses. The study recommends that the Outcome Based Education, National Curriculum Statement and Curriculum Policy Statement which have been introduced by the Department of Education be followed but adjustments must be made to the iii teaching methods to follow the interactive approach required by entrepreneurship. Policy makers should incorporate comprehensive entrepreneurship education programmes from primary school to secondary school to vocational and university and adult education centres. Finally, entrepreneurship education should be offered as an optional separate subject to all learners and involvement of local businesses and organisations should be encouraged.
- Full Text:
- Date Issued: 2012
The impact of missionary activities and the establishment of Victoria East, 1824-1860
- Maxengana, Nomalungisa Sylvia
- Authors: Maxengana, Nomalungisa Sylvia
- Date: 2012
- Subjects: Missionaries -- South Africa -- Eastern Cape -- History , Christianity and culture -- South Africa -- Eastern Cape , Christianity and other religions -- African -- Eastern Cape -- History , Xhosa (African people) -- Religious life , Eastern Cape -- Politics and Government -- Alice (South Africa)
- Language: English
- Type: Thesis , Masters , MA (History)
- Identifier: vital:11539 , http://hdl.handle.net/10353/d1006292 , Missionaries -- South Africa -- Eastern Cape -- History , Christianity and culture -- South Africa -- Eastern Cape , Christianity and other religions -- African -- Eastern Cape -- History , Xhosa (African people) -- Religious life , Eastern Cape -- Politics and Government -- Alice (South Africa)
- Description: This thesis covers a period of drastic change in that part of Xhosaland later known as Victoria East. Chapters one and two deal with the clash between the Glasgow missionaries at Lovedale and the amaXhosa who were expected to simply discard their way of life in favour of the new dispensation. Chapter three explains the arrival in the Eastern Cape of the amaMfengu, formerly called abaMbo, and their role in the divisive policies of the colonial government. Chapter four recounts the brief interlude (1836-1846) during which the colonial government tried but ultimately rejected a more equitable model of cross-border relations known as the Treaty System. The final chapter deals with the introduction of direct rule over the newly-created district of Victoria East, and with the policies of Henry Calderwood, its first magistrate, which were artfully constructed to perpetuate ‘Divide and Rule’ so as to maintain a comfortable life for the white settlers in the border area.
- Full Text:
- Date Issued: 2012
- Authors: Maxengana, Nomalungisa Sylvia
- Date: 2012
- Subjects: Missionaries -- South Africa -- Eastern Cape -- History , Christianity and culture -- South Africa -- Eastern Cape , Christianity and other religions -- African -- Eastern Cape -- History , Xhosa (African people) -- Religious life , Eastern Cape -- Politics and Government -- Alice (South Africa)
- Language: English
- Type: Thesis , Masters , MA (History)
- Identifier: vital:11539 , http://hdl.handle.net/10353/d1006292 , Missionaries -- South Africa -- Eastern Cape -- History , Christianity and culture -- South Africa -- Eastern Cape , Christianity and other religions -- African -- Eastern Cape -- History , Xhosa (African people) -- Religious life , Eastern Cape -- Politics and Government -- Alice (South Africa)
- Description: This thesis covers a period of drastic change in that part of Xhosaland later known as Victoria East. Chapters one and two deal with the clash between the Glasgow missionaries at Lovedale and the amaXhosa who were expected to simply discard their way of life in favour of the new dispensation. Chapter three explains the arrival in the Eastern Cape of the amaMfengu, formerly called abaMbo, and their role in the divisive policies of the colonial government. Chapter four recounts the brief interlude (1836-1846) during which the colonial government tried but ultimately rejected a more equitable model of cross-border relations known as the Treaty System. The final chapter deals with the introduction of direct rule over the newly-created district of Victoria East, and with the policies of Henry Calderwood, its first magistrate, which were artfully constructed to perpetuate ‘Divide and Rule’ so as to maintain a comfortable life for the white settlers in the border area.
- Full Text:
- Date Issued: 2012
Understanding student performance in a large class
- Snowball, Jeanette D, Boughey, Chrissie
- Authors: Snowball, Jeanette D , Boughey, Chrissie
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/71333 , vital:29834 , https://www.tandfonline.com/doi/abs/10.1080/14703297.2012.677658
- Description: Across the world, university teachers are increasingly being required to engage with diversity in the classes they teach. Using the data from a large Economics 1 class at a South African university, this attempts to understand the effects of diversity on chances of success and how assessment can impact on this. By demonstrating how theory can be used to understand results, the paper aims to encourage university teachers to adopt proactive strategies in managing diversity, rather than simply explaining it using student characteristics.
- Full Text: false
- Date Issued: 2012
- Authors: Snowball, Jeanette D , Boughey, Chrissie
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/71333 , vital:29834 , https://www.tandfonline.com/doi/abs/10.1080/14703297.2012.677658
- Description: Across the world, university teachers are increasingly being required to engage with diversity in the classes they teach. Using the data from a large Economics 1 class at a South African university, this attempts to understand the effects of diversity on chances of success and how assessment can impact on this. By demonstrating how theory can be used to understand results, the paper aims to encourage university teachers to adopt proactive strategies in managing diversity, rather than simply explaining it using student characteristics.
- Full Text: false
- Date Issued: 2012
A South African perspective on the tax implications of virtual asset accumulation and transactions stemming from persistent virtual worlds
- Authors: Haupt, Alexander
- Date: 2012
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:884 , http://hdl.handle.net/10962/d1001638
- Description: Massively multiplayer online role-playing games are growing in popularity with millions of people participating in these persistent online environments on a daily basis. Accompanying the ever-increasing subscription numbers is an increase in real money trade transactions stemming from these game worlds. The research question to be addressed in this thesis is whether transactions stemming from virtual worlds have real-world taxation consequences. The goal of this research is to determine the taxability of virtual assets obtained in structured as well as unstructured virtual environments and to attempt to establish the differences between capital and revenue receipts in these virtual realms, taking into account the nature of a receipt. The general deduction formula is applied to establish the deductibility of expenditure incurred whilst participating in these virtual environments. Sundry matters such as Value-Added Tax, donations tax, the withholding tax on gambling gains and tax avoidance will also be addressed. The methodology adopted for the research could best be described as interpretative, aimed at analysing and interpreting the relationship between real world taxes and persistent virtual worlds and the transactions that stem from participation therein. The research is based purely on documentary evidence. After applying relevant tax legislation to virtual economies it became evident that merely because virtual assets only exist in virtual reality does not necessarily preclude them real world tax consequences. It was concluded, however, that it is not practical for the South African Revenue Service to monitor all virtual world transactions or for participant taxpayers to calculate the real world value of each and every asset acquired in-world. As a result, it was concluded that real world tax consequences should only be applied in situations where participants actually convert their virtual assets into real world currency.
- Full Text:
- Date Issued: 2012
- Authors: Haupt, Alexander
- Date: 2012
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:884 , http://hdl.handle.net/10962/d1001638
- Description: Massively multiplayer online role-playing games are growing in popularity with millions of people participating in these persistent online environments on a daily basis. Accompanying the ever-increasing subscription numbers is an increase in real money trade transactions stemming from these game worlds. The research question to be addressed in this thesis is whether transactions stemming from virtual worlds have real-world taxation consequences. The goal of this research is to determine the taxability of virtual assets obtained in structured as well as unstructured virtual environments and to attempt to establish the differences between capital and revenue receipts in these virtual realms, taking into account the nature of a receipt. The general deduction formula is applied to establish the deductibility of expenditure incurred whilst participating in these virtual environments. Sundry matters such as Value-Added Tax, donations tax, the withholding tax on gambling gains and tax avoidance will also be addressed. The methodology adopted for the research could best be described as interpretative, aimed at analysing and interpreting the relationship between real world taxes and persistent virtual worlds and the transactions that stem from participation therein. The research is based purely on documentary evidence. After applying relevant tax legislation to virtual economies it became evident that merely because virtual assets only exist in virtual reality does not necessarily preclude them real world tax consequences. It was concluded, however, that it is not practical for the South African Revenue Service to monitor all virtual world transactions or for participant taxpayers to calculate the real world value of each and every asset acquired in-world. As a result, it was concluded that real world tax consequences should only be applied in situations where participants actually convert their virtual assets into real world currency.
- Full Text:
- Date Issued: 2012
The direct use value of municipal commonage goods and services to urban households in the Eastern Cape, South Africa
- Davenport, Nicholas A, Shackleton, Charlie M, Gambiza, James
- Authors: Davenport, Nicholas A , Shackleton, Charlie M , Gambiza, James
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/181071 , vital:43696 , xlink:href="https://doi.org/10.1016/j.landusepol.2011.09.008"
- Description: To redress past racial discrepancies in ownership and tenure, the ANC government of South Africa initiated programmes to make land accessible to the previously disadvantaged. A key component of the national land reform programme was the provision of commonage lands to urban municipalities for use by the urban poor. However, there has been no assessment of the contribution that urban commonage makes to previously disadvantaged households. This study assessed the economic benefits of the commonage programme to local households, through an in-depth survey of 90 households across three small towns in the Eastern Cape of South Africa. We examined the marketed and non-marketed consumptive direct-use values of land-based livelihoods on commonage, calculated via the ‘own reported values’ approach. The results indicate that a proportion of South Africa's urban population rely to some degree on municipal commonage for part of their livelihoods. Commonage contributions to total livelihood incomes ranged between 14 and 20%. If the contributions from commonage were excluded, the incomes of over 10% of households in each study town would drop below the poverty line. Overall, the value of harvests from commonage was worth over R1 000 (US$ 142) per hectare per year and over R4.7 million (US$ 0.68 million) per commonage per year. However, the extent and nature of use and reliance was not uniform among households, so that we developed a typology of commonage users, with four types being identified. However, rapidly growing urban populations and high levels of poverty potentially threaten the sustainability of commonage resource use. Yet the national land reform programme focuses largely on the transfer of land to municipalities and not on sustainable management. Municipalities, in turn, invest relatively little in commonage management, and the little they do is focussed on livestock production. Non-timber forest products are not considered at all, even though this study shows that they are a vital resource for the urban poor, notably for energy and construction materials.
- Full Text:
- Date Issued: 2012
- Authors: Davenport, Nicholas A , Shackleton, Charlie M , Gambiza, James
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/181071 , vital:43696 , xlink:href="https://doi.org/10.1016/j.landusepol.2011.09.008"
- Description: To redress past racial discrepancies in ownership and tenure, the ANC government of South Africa initiated programmes to make land accessible to the previously disadvantaged. A key component of the national land reform programme was the provision of commonage lands to urban municipalities for use by the urban poor. However, there has been no assessment of the contribution that urban commonage makes to previously disadvantaged households. This study assessed the economic benefits of the commonage programme to local households, through an in-depth survey of 90 households across three small towns in the Eastern Cape of South Africa. We examined the marketed and non-marketed consumptive direct-use values of land-based livelihoods on commonage, calculated via the ‘own reported values’ approach. The results indicate that a proportion of South Africa's urban population rely to some degree on municipal commonage for part of their livelihoods. Commonage contributions to total livelihood incomes ranged between 14 and 20%. If the contributions from commonage were excluded, the incomes of over 10% of households in each study town would drop below the poverty line. Overall, the value of harvests from commonage was worth over R1 000 (US$ 142) per hectare per year and over R4.7 million (US$ 0.68 million) per commonage per year. However, the extent and nature of use and reliance was not uniform among households, so that we developed a typology of commonage users, with four types being identified. However, rapidly growing urban populations and high levels of poverty potentially threaten the sustainability of commonage resource use. Yet the national land reform programme focuses largely on the transfer of land to municipalities and not on sustainable management. Municipalities, in turn, invest relatively little in commonage management, and the little they do is focussed on livestock production. Non-timber forest products are not considered at all, even though this study shows that they are a vital resource for the urban poor, notably for energy and construction materials.
- Full Text:
- Date Issued: 2012
To what extent can microfinance sustain the livelihoods of the women of Mdantsane (Ward N.U. 9)
- Authors: Cuntu, Somila
- Date: 2012
- Subjects: Microfinance -- South Africa -- Eastern Cape , Women in economic development --South Africa -- Eastern Cape , Women -- South Africa -- Eastern Cape -- Social conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9110 , http://hdl.handle.net/10948/d1014636
- Description: I have observed that in Mdantsane there is a clear gap between men and women, as people are tradition-bound, and men are often the breadwinners in their households, which leave some women sidelined and only left with household chores. Therefore this research aims to investigate these inequalities, and if microfinance can contribute positively towards the development of these women, so that they can develop and sustain their lifestyles. Chapter two of this research, containing available literature on this particular study which is sustainable livelihoods and microfinance for poor women, and covers both local as well as international studies. Here microfinance and sustainable livelihoods will be conceptualised accordingly so as to shed light on the subject. The third chapter covers the methodology used in the current study which clearly outlines the methodological framework, the research instruments, participants as well as the research design and procedure. The fourth chapter provides the findings and of the the current study, this will outline the main themes that surface and are prevalent among the participants. Chapter five will consist of the discussion of the results. Lastly chapter six will provide the conclusion as well as well as recommendations relevant to the results of this study.
- Full Text:
- Date Issued: 2012
- Authors: Cuntu, Somila
- Date: 2012
- Subjects: Microfinance -- South Africa -- Eastern Cape , Women in economic development --South Africa -- Eastern Cape , Women -- South Africa -- Eastern Cape -- Social conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9110 , http://hdl.handle.net/10948/d1014636
- Description: I have observed that in Mdantsane there is a clear gap between men and women, as people are tradition-bound, and men are often the breadwinners in their households, which leave some women sidelined and only left with household chores. Therefore this research aims to investigate these inequalities, and if microfinance can contribute positively towards the development of these women, so that they can develop and sustain their lifestyles. Chapter two of this research, containing available literature on this particular study which is sustainable livelihoods and microfinance for poor women, and covers both local as well as international studies. Here microfinance and sustainable livelihoods will be conceptualised accordingly so as to shed light on the subject. The third chapter covers the methodology used in the current study which clearly outlines the methodological framework, the research instruments, participants as well as the research design and procedure. The fourth chapter provides the findings and of the the current study, this will outline the main themes that surface and are prevalent among the participants. Chapter five will consist of the discussion of the results. Lastly chapter six will provide the conclusion as well as well as recommendations relevant to the results of this study.
- Full Text:
- Date Issued: 2012
An ion-imprinted polymer for the selective extraction of mercury(II) ions in aqueous media
- Batlokwa, Bareki Shima, Chimuka, Luke, Tshentu, Zenixole, Cukrowska, Ewa, Torto, Nelson
- Authors: Batlokwa, Bareki Shima , Chimuka, Luke , Tshentu, Zenixole , Cukrowska, Ewa , Torto, Nelson
- Date: 2012
- Language: English
- Type: Article
- Identifier: vital:6566 , http://hdl.handle.net/10962/d1004125
- Description: A double-imprinted polymer exhibiting high sensitivity for mercury(II) in aqueous solution is presented. Polymer particles imprinted with mercury(II) were synthesised by copolymerising the functional and cross-linking monomers, N’–[3– (Trimethoxysilyl)–propyl]diethylenetriamine (TPET) and tetraethylorthosilicate (TEOS). A double-imprinting procedure employing hexadecyltrimethylammonium bromide (CTAB), as a second template to improve the efficiency of the polymer, was adopted. The imprinted polymer was characterised by FTIR, scanning electron microscopy (SEM) and the average size determined by screen analysis using standard test sieves. Relative selective coefficients (k`) of the imprinted polymer evaluated from selective binding studies between Hg2+ and Cu2+ or Hg2+ and Cd2+ were 10 588 and 3 147, respectively. These values indicated highly-favoured Hg2+ extractions over the 2 competing ions. The results of spiked and real water samples showed high extraction efficiencies of Hg2+ ions, (over 84%) as evaluated from the detected unextracted Hg2+ ions by ICP-OES. The method exhibited a dynamic response concentration range for Hg2+ between 0.01 and 20 μg/mℓ, with a detection limit (LOD, 3σ) of 0.000036 μg/mℓ (36 ng/ℓ) that meets the monitoring requirements for the USA EPA of 2 000 ng/ℓ for Hg2+ in drinking water. Generally, the data (n=10) had percentage relative standard deviations (%RSD) of less than 4%. Satisfactory results were also obtained when the prepared sorbent was applied for the pre-concentration of Hg2+ from an aqueous certified reference material. These findings indicate that the double-imprinted polymer has potential to be used as an efficient extraction material for the selective pre–concentration of mercury(II) ions in aqueous environments.
- Full Text:
- Date Issued: 2012
- Authors: Batlokwa, Bareki Shima , Chimuka, Luke , Tshentu, Zenixole , Cukrowska, Ewa , Torto, Nelson
- Date: 2012
- Language: English
- Type: Article
- Identifier: vital:6566 , http://hdl.handle.net/10962/d1004125
- Description: A double-imprinted polymer exhibiting high sensitivity for mercury(II) in aqueous solution is presented. Polymer particles imprinted with mercury(II) were synthesised by copolymerising the functional and cross-linking monomers, N’–[3– (Trimethoxysilyl)–propyl]diethylenetriamine (TPET) and tetraethylorthosilicate (TEOS). A double-imprinting procedure employing hexadecyltrimethylammonium bromide (CTAB), as a second template to improve the efficiency of the polymer, was adopted. The imprinted polymer was characterised by FTIR, scanning electron microscopy (SEM) and the average size determined by screen analysis using standard test sieves. Relative selective coefficients (k`) of the imprinted polymer evaluated from selective binding studies between Hg2+ and Cu2+ or Hg2+ and Cd2+ were 10 588 and 3 147, respectively. These values indicated highly-favoured Hg2+ extractions over the 2 competing ions. The results of spiked and real water samples showed high extraction efficiencies of Hg2+ ions, (over 84%) as evaluated from the detected unextracted Hg2+ ions by ICP-OES. The method exhibited a dynamic response concentration range for Hg2+ between 0.01 and 20 μg/mℓ, with a detection limit (LOD, 3σ) of 0.000036 μg/mℓ (36 ng/ℓ) that meets the monitoring requirements for the USA EPA of 2 000 ng/ℓ for Hg2+ in drinking water. Generally, the data (n=10) had percentage relative standard deviations (%RSD) of less than 4%. Satisfactory results were also obtained when the prepared sorbent was applied for the pre-concentration of Hg2+ from an aqueous certified reference material. These findings indicate that the double-imprinted polymer has potential to be used as an efficient extraction material for the selective pre–concentration of mercury(II) ions in aqueous environments.
- Full Text:
- Date Issued: 2012
Comparing child justice legislation in South Africa and South Sudan
- Authors: Teny, Jamual Peter Malual
- Date: 2012
- Subjects: Children -- Legal status, laws, etc , Criminal law -- South Africa , Criminal law -- Sudan
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10187 , http://hdl.handle.net/10948/d1020941
- Description: The legal framework and legislation governing the rights of the children have become of great concern in modern societies, particularly, in the area of criminal justice and human rights. The Convention on the Rights of the Child and African Charter on the Rights and Welfare of the Child are basic international and regional conventions regulating the rights of the children and include how to deal with children in conflict with the law. States parties to these conventions are required to take appropriate measures, which includes enactment of legislation to give effect to these rights. Legislative instruments must address the following issues: The principle of the best interest of the child; the age of criminal responsibility; restorative justice; diversion; and the trials of children in conflict with the law. The above-mentioned instrument require and emphasise the use of an alternative approach in respect of the children who are in conflict with law. In this research a comparative approach is used to compare the South African and South Sudanese child justice legislative instruments. The legislative instruments pertaining to child justice in both countries are set out and compared. It is concluded that the South African legislative instruments are more aligned to the Convention on the Rights of the Child and African Charter on the Rights and Welfare of the Child. Recommendations and proposals are made to enact to adopt in South Sudan new legislative measures and provisions aim to afford more protection to children in conflict with the law and to strike a better balance between rights of a child and victim of crimes.
- Full Text:
- Date Issued: 2012
- Authors: Teny, Jamual Peter Malual
- Date: 2012
- Subjects: Children -- Legal status, laws, etc , Criminal law -- South Africa , Criminal law -- Sudan
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10187 , http://hdl.handle.net/10948/d1020941
- Description: The legal framework and legislation governing the rights of the children have become of great concern in modern societies, particularly, in the area of criminal justice and human rights. The Convention on the Rights of the Child and African Charter on the Rights and Welfare of the Child are basic international and regional conventions regulating the rights of the children and include how to deal with children in conflict with the law. States parties to these conventions are required to take appropriate measures, which includes enactment of legislation to give effect to these rights. Legislative instruments must address the following issues: The principle of the best interest of the child; the age of criminal responsibility; restorative justice; diversion; and the trials of children in conflict with the law. The above-mentioned instrument require and emphasise the use of an alternative approach in respect of the children who are in conflict with law. In this research a comparative approach is used to compare the South African and South Sudanese child justice legislative instruments. The legislative instruments pertaining to child justice in both countries are set out and compared. It is concluded that the South African legislative instruments are more aligned to the Convention on the Rights of the Child and African Charter on the Rights and Welfare of the Child. Recommendations and proposals are made to enact to adopt in South Sudan new legislative measures and provisions aim to afford more protection to children in conflict with the law and to strike a better balance between rights of a child and victim of crimes.
- Full Text:
- Date Issued: 2012
An analysis of the Southern African Development Community (SADC) preventive diplomacy in the kingdom of Lesotho: a case study
- Authors: Bukae, Nkosi Makhonya
- Date: 2012
- Subjects: Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8196 , http://hdl.handle.net/10948/d1008296 , Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Description: The focus of this study is the Southern African Development Community (SADC) preventive diplomacy interventions in Lesotho in 1994, 1998 and 2007. The core aim of the study was to evaluate the efficacy of the SADC security mechanism (the Organ on Politics, Defence and Security (OPDS) in conflict prevention, management and resolution on the basis of the Lesotho experience. Data for this qualitative case study was collected through interviews and document analysis. The twenty four participants for the study were drawn from the SADC OPDS unit, Lesotho political parties, Civil Society Organisations (CSOs), Academics from the University of Botswana (UB) and the National University of Lesotho (NUL), retired Botswana Defence officers who participated in the Lesotho missions and office of the post-2007election dispute dialogue facilitator in Lesotho. Documents on the SADC Treaties, Protocols, Communiqués and interventions in other set ups were used to highlight its operational policies, mandate, structures, successes and challenges. Lesotho was chosen as a case study because SADC employed both non-coercive (SADC Troika and Eminent Person mediation, 1994 and 2007 respectively) and coercive measures (the 1998 military intervention). The findings of the study revealed that SADC as a regional body had its own successes and challenges. Different perceptions on the SADC interventions in Lesotho emerged mainly between the participants from the ruling party and the opposition parties. While the former commended SADC for successfully mitigating the calamitous effects of 1994, 1998 and 2007 post-electoral violence, the opposition parties viewed the regional organisations as engaged in illegal interference in the domestic affairs of the country to defend the incumbent governing party. It also emerged from the study that the SADC security mechanism has numerous structural and operational flaws. There were several unanswered questions revolving around the legality and mandate of some of the missions. For instance, no concrete evidence emerged as to whether the 1998 military intervention was authorised by the SADC. The study also revealed that SADC has learnt valuable lessons from the Lesotho missions. Some of the reforms which the SADC has introduced in the OPDS such as the establishment of the SADC Stand by Force, Early Warning structures, the Mediation Unit, and a panel of expert mediators emanated mainly from the Lesotho experiences. The study recommends that SADC needs to harmonise the efforts of its OPDS structures such as the Mediation Unit; the Troika; the Inter-State Defence and Security Committee (ISDSC); the Inter-State Politics and Diplomacy Committee (ISPDC) and the Summit of Heads of States and Governments for rapid, coherent and well coordinated interventions in future regional preventive missions. It is also recommended that SADC should focus on identifying and mitigating underlying causal factors such as underdevelopment; poverty; deprivation of freedoms, marginalisation and other forms of social stratifications and oppression in its preventive diplomacy missions if durable peace is to be achieved in Lesotho and any other future cases.
- Full Text:
- Date Issued: 2012
- Authors: Bukae, Nkosi Makhonya
- Date: 2012
- Subjects: Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8196 , http://hdl.handle.net/10948/d1008296 , Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Description: The focus of this study is the Southern African Development Community (SADC) preventive diplomacy interventions in Lesotho in 1994, 1998 and 2007. The core aim of the study was to evaluate the efficacy of the SADC security mechanism (the Organ on Politics, Defence and Security (OPDS) in conflict prevention, management and resolution on the basis of the Lesotho experience. Data for this qualitative case study was collected through interviews and document analysis. The twenty four participants for the study were drawn from the SADC OPDS unit, Lesotho political parties, Civil Society Organisations (CSOs), Academics from the University of Botswana (UB) and the National University of Lesotho (NUL), retired Botswana Defence officers who participated in the Lesotho missions and office of the post-2007election dispute dialogue facilitator in Lesotho. Documents on the SADC Treaties, Protocols, Communiqués and interventions in other set ups were used to highlight its operational policies, mandate, structures, successes and challenges. Lesotho was chosen as a case study because SADC employed both non-coercive (SADC Troika and Eminent Person mediation, 1994 and 2007 respectively) and coercive measures (the 1998 military intervention). The findings of the study revealed that SADC as a regional body had its own successes and challenges. Different perceptions on the SADC interventions in Lesotho emerged mainly between the participants from the ruling party and the opposition parties. While the former commended SADC for successfully mitigating the calamitous effects of 1994, 1998 and 2007 post-electoral violence, the opposition parties viewed the regional organisations as engaged in illegal interference in the domestic affairs of the country to defend the incumbent governing party. It also emerged from the study that the SADC security mechanism has numerous structural and operational flaws. There were several unanswered questions revolving around the legality and mandate of some of the missions. For instance, no concrete evidence emerged as to whether the 1998 military intervention was authorised by the SADC. The study also revealed that SADC has learnt valuable lessons from the Lesotho missions. Some of the reforms which the SADC has introduced in the OPDS such as the establishment of the SADC Stand by Force, Early Warning structures, the Mediation Unit, and a panel of expert mediators emanated mainly from the Lesotho experiences. The study recommends that SADC needs to harmonise the efforts of its OPDS structures such as the Mediation Unit; the Troika; the Inter-State Defence and Security Committee (ISDSC); the Inter-State Politics and Diplomacy Committee (ISPDC) and the Summit of Heads of States and Governments for rapid, coherent and well coordinated interventions in future regional preventive missions. It is also recommended that SADC should focus on identifying and mitigating underlying causal factors such as underdevelopment; poverty; deprivation of freedoms, marginalisation and other forms of social stratifications and oppression in its preventive diplomacy missions if durable peace is to be achieved in Lesotho and any other future cases.
- Full Text:
- Date Issued: 2012
Investigating the feminist significance of Lars von Trier's representation of women in his Golden Heart Trilogy (1996/1998/2000) and Antichrist (2009)
- Authors: Evans, Melissa Albie
- Date: 2012
- Subjects: Motion picture producers and directors , Feminism , Anti-feminism , Second-wave feminism , Trier, Lars von, 1956-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8409 , http://hdl.handle.net/10948/d1011634 , Motion picture producers and directors , Feminism , Anti-feminism , Second-wave feminism , Trier, Lars von, 1956-
- Description: Despite critics‟ negative appraisal of Lars Von Trier's Antichrist (2009) for its ostensible misogyny, a deep thematic resonance exists between its representation of women as historical victims of patriarchal discourse, and the positive representations of women as Christ-like figures found in his Golden Heart Trilogy (1996/1998/2000). Arguably, it is important to recognize this, because these films together comprise an exercise in cinematic resistance to the narratives of the „backlash‟ against women's rights, thematized by Susan Faludi in her Backlash: The Undeclared War Against American Women; resistance which is undermined when these films are considered disparate or incongruous.
- Full Text:
- Date Issued: 2012
- Authors: Evans, Melissa Albie
- Date: 2012
- Subjects: Motion picture producers and directors , Feminism , Anti-feminism , Second-wave feminism , Trier, Lars von, 1956-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8409 , http://hdl.handle.net/10948/d1011634 , Motion picture producers and directors , Feminism , Anti-feminism , Second-wave feminism , Trier, Lars von, 1956-
- Description: Despite critics‟ negative appraisal of Lars Von Trier's Antichrist (2009) for its ostensible misogyny, a deep thematic resonance exists between its representation of women as historical victims of patriarchal discourse, and the positive representations of women as Christ-like figures found in his Golden Heart Trilogy (1996/1998/2000). Arguably, it is important to recognize this, because these films together comprise an exercise in cinematic resistance to the narratives of the „backlash‟ against women's rights, thematized by Susan Faludi in her Backlash: The Undeclared War Against American Women; resistance which is undermined when these films are considered disparate or incongruous.
- Full Text:
- Date Issued: 2012
Teacher's and principal's perceptions of the integrated quality management system (IQMS) in three Butterworth District schools
- Authors: Ntshewula, Nombulelo
- Date: 2012
- Subjects: Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16197 , http://hdl.handle.net/10353/d1007301 , Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Description: The researcher’s interest in this study is in teachers’ perceptions and principals of the Integrated Quality Management System (IQMS). This study examines teachers’ understandings of this quality management and performance appraisal system, how teachers perceive the instrument used to manage and monitor their performance and the performance of their schools, and what lessons may be learnt regarding the implementation process of the IQMS. The investigation was carried out in three Butterworth District schools in the Eastern Cape. The researcher made use of qualitative methodology to obtain data from a sample of 3 principals, 9 teachers and 1 district official. Data were collected from these respondents by means of in-depth, semi-structured interviews and through document analysis. The study found that some of the teachers and principals felt that they did not understand the IQMS, and they complained that the system is fraught with many obstacles that need to be addressed in order to promote the effectiveness of teaching and learning. The participants also spoke of multiple factors that contribute negatively to this phenomenon, which include the fact that the teachers’ workload is increased by the IQMS, time constraints, inadequate training, vague and unfamiliar language, the financial incentive that is attached to the instrument, and the many structures in the implementation process. In addition, the system seems to encourage a bureaucratic style of management. Teachers and principals also suggested ways in which the IQMS could be structured by the Department of Education for greater efficiency in education.
- Full Text:
- Date Issued: 2012
- Authors: Ntshewula, Nombulelo
- Date: 2012
- Subjects: Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16197 , http://hdl.handle.net/10353/d1007301 , Total quality management , Quality assurance -- South Africa -- Eastern Cape , Teachers -- Training -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , School principals -- South Africa -- Eastern Cape , Educational evaluation -- South Africa -- Eastern Cape
- Description: The researcher’s interest in this study is in teachers’ perceptions and principals of the Integrated Quality Management System (IQMS). This study examines teachers’ understandings of this quality management and performance appraisal system, how teachers perceive the instrument used to manage and monitor their performance and the performance of their schools, and what lessons may be learnt regarding the implementation process of the IQMS. The investigation was carried out in three Butterworth District schools in the Eastern Cape. The researcher made use of qualitative methodology to obtain data from a sample of 3 principals, 9 teachers and 1 district official. Data were collected from these respondents by means of in-depth, semi-structured interviews and through document analysis. The study found that some of the teachers and principals felt that they did not understand the IQMS, and they complained that the system is fraught with many obstacles that need to be addressed in order to promote the effectiveness of teaching and learning. The participants also spoke of multiple factors that contribute negatively to this phenomenon, which include the fact that the teachers’ workload is increased by the IQMS, time constraints, inadequate training, vague and unfamiliar language, the financial incentive that is attached to the instrument, and the many structures in the implementation process. In addition, the system seems to encourage a bureaucratic style of management. Teachers and principals also suggested ways in which the IQMS could be structured by the Department of Education for greater efficiency in education.
- Full Text:
- Date Issued: 2012
Enumeration of insect viruses using microscopic and molecular analyses: South African isolate of cryotophlebia leucotreta granulovirus as a case study
- Authors: Dhladhla, Busisiwe I R
- Date: 2012
- Subjects: Baculoviruses , Insects -- Viruses , Molecular genetics , Microbial genomics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10318 , http://hdl.handle.net/10948/d1008395 , Baculoviruses , Insects -- Viruses , Molecular genetics , Microbial genomics
- Description: Baculoviruses have been used as biocontrol agents to control insect pests in agriculture since the 1970s. Out of the fifteen virus families known to infect insects, baculoviruses offer the greatest potential as insect biopesticides, due to their high host specificity which makes them extremely safe to humans, other vertebrates, plants and non-target microorganisms. They comprise of two genera: nucleopolyhedroviruses (NPVs) and granuloviruses (GVs). The South African isolate of Cryptophlebia leucotreta granulovirus (CrleGV-SA) which is infectious for the false codling moth (FCM), Thaumatotibia leucotreta, (Meyrick) (Lepidoptera: Tortricidae), has been successfully developed into two commercial biopesticides; Cryptogran® and Cryptex®, for the control of FCM in citrus crops. The current method of enumeration used for CrleGV-SA virus particles in routine experiments during the production of the GV as biopesticides, is dark field microscopy. However, due to the small size of GVs (300-500 nm in length), the technique is not easy to perform on these viruses, and no systemic comparison has been made of potential alternative methods. Therefore, the main objective of this study was to develop a quantitative enumeration method for CrleGV-SA occlusion bodies (OBs) which is accurate, reliable, and feasible, and compare the developed methods of enumeration to the current method. Purified and semi-purified CrleGV-SA viral stocks were prepared for enumeration studies using spectrophotometry, dark field microscopy, scanning electron microscopy (SEM) and real time qPCR. Spectrophotometry was found to be an unreliable method for enumeration of GVs in the production, standardisation, and quality control of biopesticides. Dark field microscopy and SEM were found to be accurate, and statistically comparable (p = 0.064) enumeration techniques. qPCR is currently being optimised for the enumeration of GVs. This technique was demonstrated to generate accurate standard curves for absolute quantification of virus particles for pure and semi-pure virus preparations. qPCR offers the greatest potential as an accurate enumeration method because it is not affected by contamination with non-biological contaminating debris, nor by other biological material due to the specificity of PCR primers. Further work is required to fully develop qPCR as an enumeration method for GVs. However, dark field microscopy has been successfully validated as an enumeration method. SEM, which has a high resolution compared to light microscopy, has an added advantage over dark field microscopy, which is to distinguish virus particles in semi-pure viral stock preparations during counting. Therefore, SEM currently provides the most unambiguous and feasible enumeration method for GVs in both purified and semi-purified virus samples.
- Full Text:
- Date Issued: 2012
- Authors: Dhladhla, Busisiwe I R
- Date: 2012
- Subjects: Baculoviruses , Insects -- Viruses , Molecular genetics , Microbial genomics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10318 , http://hdl.handle.net/10948/d1008395 , Baculoviruses , Insects -- Viruses , Molecular genetics , Microbial genomics
- Description: Baculoviruses have been used as biocontrol agents to control insect pests in agriculture since the 1970s. Out of the fifteen virus families known to infect insects, baculoviruses offer the greatest potential as insect biopesticides, due to their high host specificity which makes them extremely safe to humans, other vertebrates, plants and non-target microorganisms. They comprise of two genera: nucleopolyhedroviruses (NPVs) and granuloviruses (GVs). The South African isolate of Cryptophlebia leucotreta granulovirus (CrleGV-SA) which is infectious for the false codling moth (FCM), Thaumatotibia leucotreta, (Meyrick) (Lepidoptera: Tortricidae), has been successfully developed into two commercial biopesticides; Cryptogran® and Cryptex®, for the control of FCM in citrus crops. The current method of enumeration used for CrleGV-SA virus particles in routine experiments during the production of the GV as biopesticides, is dark field microscopy. However, due to the small size of GVs (300-500 nm in length), the technique is not easy to perform on these viruses, and no systemic comparison has been made of potential alternative methods. Therefore, the main objective of this study was to develop a quantitative enumeration method for CrleGV-SA occlusion bodies (OBs) which is accurate, reliable, and feasible, and compare the developed methods of enumeration to the current method. Purified and semi-purified CrleGV-SA viral stocks were prepared for enumeration studies using spectrophotometry, dark field microscopy, scanning electron microscopy (SEM) and real time qPCR. Spectrophotometry was found to be an unreliable method for enumeration of GVs in the production, standardisation, and quality control of biopesticides. Dark field microscopy and SEM were found to be accurate, and statistically comparable (p = 0.064) enumeration techniques. qPCR is currently being optimised for the enumeration of GVs. This technique was demonstrated to generate accurate standard curves for absolute quantification of virus particles for pure and semi-pure virus preparations. qPCR offers the greatest potential as an accurate enumeration method because it is not affected by contamination with non-biological contaminating debris, nor by other biological material due to the specificity of PCR primers. Further work is required to fully develop qPCR as an enumeration method for GVs. However, dark field microscopy has been successfully validated as an enumeration method. SEM, which has a high resolution compared to light microscopy, has an added advantage over dark field microscopy, which is to distinguish virus particles in semi-pure viral stock preparations during counting. Therefore, SEM currently provides the most unambiguous and feasible enumeration method for GVs in both purified and semi-purified virus samples.
- Full Text:
- Date Issued: 2012
Rebellious uniform
- Authors: Farmer, Mark Ross
- Date: 2012
- Subjects: High school students -- South Africa -- Eastern Cape -- Discipline Teenagers -- South Africa -- Eastern Cape -- Conduct of life Teenagers -- Education (Secondary) -- South Africa School discipline
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2401 , http://hdl.handle.net/10962/d1002197
- Description: In this thesis, I focus on adolescent teens at Kingswood College High School, where I am currently employed as a student assistant in Grahamstown. I form part of a networked hierarchy at Kingswood College whereby I am expected to perform duties which require me to uphold discipline, forge respect and act as a mentor to students. Within this complex role I am mindful of the power dynamics within the school and my focus is on how the students at Kingswood College in some instances challenge them. Regulations in regard to uniforms and in regard to the arrangement of each learner’s belongings insist on the sublimation/sacrificing of an individual identity in favour of an institutional one. Thus tiny departures from those norms, slight transgressions, might be understood as small rebellions which the boarder stages against disciplinary structures and the conformity demanded of him or her. I am particularly interested in these transgressions. In this thesis I attempt to unravel the complexities associated with such idiosyncrasies and how they play out amongst adolescent teens.
- Full Text:
- Date Issued: 2012
- Authors: Farmer, Mark Ross
- Date: 2012
- Subjects: High school students -- South Africa -- Eastern Cape -- Discipline Teenagers -- South Africa -- Eastern Cape -- Conduct of life Teenagers -- Education (Secondary) -- South Africa School discipline
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2401 , http://hdl.handle.net/10962/d1002197
- Description: In this thesis, I focus on adolescent teens at Kingswood College High School, where I am currently employed as a student assistant in Grahamstown. I form part of a networked hierarchy at Kingswood College whereby I am expected to perform duties which require me to uphold discipline, forge respect and act as a mentor to students. Within this complex role I am mindful of the power dynamics within the school and my focus is on how the students at Kingswood College in some instances challenge them. Regulations in regard to uniforms and in regard to the arrangement of each learner’s belongings insist on the sublimation/sacrificing of an individual identity in favour of an institutional one. Thus tiny departures from those norms, slight transgressions, might be understood as small rebellions which the boarder stages against disciplinary structures and the conformity demanded of him or her. I am particularly interested in these transgressions. In this thesis I attempt to unravel the complexities associated with such idiosyncrasies and how they play out amongst adolescent teens.
- Full Text:
- Date Issued: 2012