The zero-rating of certain professional services in terms of the Value-Added Tax Act
- Authors: Roberts, Tanya
- Date: 2013
- Subjects: South Africa. Value-Added Tax Act, 1991 , Tax exemption -- Law and legislation -- South Africa , Value-added tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8968 , http://hdl.handle.net/10948/d1021006
- Description: The third sphere of government (Local Government) has been persistently clouded by unfavourable Annual Financial Statement (AFS) audit reports. This results in local government losing credibility and its stakeholders losing confidence in the institutions or municipalities. In-depth analysis of the root cause of this dilemma is an opportunity for the municipality to reorganise its house and redeem its dignity and credibility to its stakeholders through addressing the identified challenges. The importance of the study can be attributed to the need to investigate the root causes of unfavourable audit opinion and recommend possible remedies that can assist municipalities to improve their audit report outcomes which in turn will improve the confidence of its stakeholders. The primary objective of the study was to investigate variables that impact on the audit report outcomes on annual financial statements of the municipalities that are within Alfred Nzo District (AND) Jurisdiction, including Alfred Nzo District Municipality (ANDM). This was achieved through investigating the root causes of the audit report outcomes with specific focus on the relationship that exists between the management role and audit outcomes of the Alfred Nzo District Municipalities. This was measured by the municipality’s leadership, governance, internal controls and human capital management. Convenient sampling was used wherein 150 questionnaires (30 per municipality) were sent out to the selected employees in all the municipalities in the Alfred Nzo District. Out of the questionnaires that were sent out, 103 responses were received. These were analysed to draw findings, conclusion and recommendations. The empirical results of the study revealed that there is strong evidence that leadership, governance and human capital management have a positive influence on the municipality’s AFS audit report outcomes. It also revealed that there is overwhelming evidence that internal controls have a positive influence on the municipality’s AFS audit report outcomes. The study recommends how leadership, governance, internal controls and human capital management must be improved. It also provides future research recommendations to improve this study.
- Full Text:
- Date Issued: 2013
- Authors: Roberts, Tanya
- Date: 2013
- Subjects: South Africa. Value-Added Tax Act, 1991 , Tax exemption -- Law and legislation -- South Africa , Value-added tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8968 , http://hdl.handle.net/10948/d1021006
- Description: The third sphere of government (Local Government) has been persistently clouded by unfavourable Annual Financial Statement (AFS) audit reports. This results in local government losing credibility and its stakeholders losing confidence in the institutions or municipalities. In-depth analysis of the root cause of this dilemma is an opportunity for the municipality to reorganise its house and redeem its dignity and credibility to its stakeholders through addressing the identified challenges. The importance of the study can be attributed to the need to investigate the root causes of unfavourable audit opinion and recommend possible remedies that can assist municipalities to improve their audit report outcomes which in turn will improve the confidence of its stakeholders. The primary objective of the study was to investigate variables that impact on the audit report outcomes on annual financial statements of the municipalities that are within Alfred Nzo District (AND) Jurisdiction, including Alfred Nzo District Municipality (ANDM). This was achieved through investigating the root causes of the audit report outcomes with specific focus on the relationship that exists between the management role and audit outcomes of the Alfred Nzo District Municipalities. This was measured by the municipality’s leadership, governance, internal controls and human capital management. Convenient sampling was used wherein 150 questionnaires (30 per municipality) were sent out to the selected employees in all the municipalities in the Alfred Nzo District. Out of the questionnaires that were sent out, 103 responses were received. These were analysed to draw findings, conclusion and recommendations. The empirical results of the study revealed that there is strong evidence that leadership, governance and human capital management have a positive influence on the municipality’s AFS audit report outcomes. It also revealed that there is overwhelming evidence that internal controls have a positive influence on the municipality’s AFS audit report outcomes. The study recommends how leadership, governance, internal controls and human capital management must be improved. It also provides future research recommendations to improve this study.
- Full Text:
- Date Issued: 2013
Think Piece : conceptions of quality and ‘Learning as Connection’: teaching for relevance
- Authors: Lotz-Sisitka, Heila
- Date: 2013
- Subjects: Teachers -- Quality -- South Africa , Quality assurance -- South Africa , Effective teaching , Relevance , SADC Regional Environmental Education Programme
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59635 , vital:27633 , https://www.ajol.info/index.php/sajee/article/view/122256
- Description: This think piece captures some of the thinking that emerged in and through the Southern African Development Community (SADC) Regional Environmental Education Programme research programme. This research programme emerged over a five-year period (2008–2012) and involved ten southern African teacher education institutions from eight countries (see ‘Acknowledgements’). The research programme sought to understand what contributions environment and sustainability education could make to debates on educational quality and relevance. Issues of educational quality are high on the national agendas of governments in southern Africa, as it is now well known that providing access to schooling is not a sufficient condition for achieving educational quality. Educational quality is intimately linked to the processes of teaching and learning, but the concept of educational quality is not unproblematic in and of itself. It is, as Noel Gough (2005) noted many years ago, an ‘order word’ that shapes the way people think and practise. Our enquiries during this research programme involved a number of case studies (that were reported on in the Southern African Journal of Environmental Education (SAJEE) in 2008, and are again reported on in this edition of the SAJEE), but the programme also involved theoretical engagement with the concept of educational quality and relevance. This think piece helps to make some of this thinking and theoretical deliberation visible. The author of this think piece was also the leader of the regional research programme and was tasked with synthesising the theoretical deliberations that emerged from the research design which were found to be useful for guiding interpretations and deliberation on more detailed case studies undertaken at country level.
- Full Text:
- Date Issued: 2013
- Authors: Lotz-Sisitka, Heila
- Date: 2013
- Subjects: Teachers -- Quality -- South Africa , Quality assurance -- South Africa , Effective teaching , Relevance , SADC Regional Environmental Education Programme
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59635 , vital:27633 , https://www.ajol.info/index.php/sajee/article/view/122256
- Description: This think piece captures some of the thinking that emerged in and through the Southern African Development Community (SADC) Regional Environmental Education Programme research programme. This research programme emerged over a five-year period (2008–2012) and involved ten southern African teacher education institutions from eight countries (see ‘Acknowledgements’). The research programme sought to understand what contributions environment and sustainability education could make to debates on educational quality and relevance. Issues of educational quality are high on the national agendas of governments in southern Africa, as it is now well known that providing access to schooling is not a sufficient condition for achieving educational quality. Educational quality is intimately linked to the processes of teaching and learning, but the concept of educational quality is not unproblematic in and of itself. It is, as Noel Gough (2005) noted many years ago, an ‘order word’ that shapes the way people think and practise. Our enquiries during this research programme involved a number of case studies (that were reported on in the Southern African Journal of Environmental Education (SAJEE) in 2008, and are again reported on in this edition of the SAJEE), but the programme also involved theoretical engagement with the concept of educational quality and relevance. This think piece helps to make some of this thinking and theoretical deliberation visible. The author of this think piece was also the leader of the regional research programme and was tasked with synthesising the theoretical deliberations that emerged from the research design which were found to be useful for guiding interpretations and deliberation on more detailed case studies undertaken at country level.
- Full Text:
- Date Issued: 2013
Think Piece, Naked Science-Avoiding Methodolatry in an Environmental Education Context
- Authors: Price, Leigh
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387264 , vital:68220 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122255"
- Description: Research methodology is significantly political and in this think piece I try to better understand the effect of this politicisation in the production of science. The main focus of the think piece is to identify the dominant methodological discourses and analyse them using techniques borrowed from post-structuralism. From this analysis, I suggest that methodological discourses are reproduced and normalised in much the same way as discourses of, for example, sexuality, and I give examples of this from my experience as a PhD student of environmental education. I also suggest that some transgressive methodologies, such as those associated with postmodernism or participatory research, despite purporting to empower, at times also disempower. Furthermore, all of the methodologies that I analyse are, in one way or another, ‘loaded’; they cloak their agendas. From this analysis, I move towards suggesting an alternative critical realist methodology for environmental education which is naked; its agendas are clearly stated, not least because this epistemology does not lend itself to deception. An important part of this critical realist conception of methodology is the idea of ‘meta-reflexivity’ in which truth is not vulgarly pragmatic or fideistic.
- Full Text:
- Date Issued: 2013
- Authors: Price, Leigh
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/387264 , vital:68220 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122255"
- Description: Research methodology is significantly political and in this think piece I try to better understand the effect of this politicisation in the production of science. The main focus of the think piece is to identify the dominant methodological discourses and analyse them using techniques borrowed from post-structuralism. From this analysis, I suggest that methodological discourses are reproduced and normalised in much the same way as discourses of, for example, sexuality, and I give examples of this from my experience as a PhD student of environmental education. I also suggest that some transgressive methodologies, such as those associated with postmodernism or participatory research, despite purporting to empower, at times also disempower. Furthermore, all of the methodologies that I analyse are, in one way or another, ‘loaded’; they cloak their agendas. From this analysis, I move towards suggesting an alternative critical realist methodology for environmental education which is naked; its agendas are clearly stated, not least because this epistemology does not lend itself to deception. An important part of this critical realist conception of methodology is the idea of ‘meta-reflexivity’ in which truth is not vulgarly pragmatic or fideistic.
- Full Text:
- Date Issued: 2013
Third order nonlinear optical properties of phthalocyanines in the presence nanomaterials and in polymer thin films
- Britton, Jonathan, Durmus, Mahmut, Khene, Samson M, Chauke, Vongani, Nyokong, Tebello
- Authors: Britton, Jonathan , Durmus, Mahmut , Khene, Samson M , Chauke, Vongani , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/241772 , vital:50968 , xlink:href="https://doi.org/10.1142/S108842461350003X"
- Description: Third order nonlinear optical properties were determined for phthalocyanine complexes 1–10 containing In, Ga and Zn central metals and tetra- or octa-substituted with benzyloxyphenoxy, phenoxy, tert-butylphenoxy and amino groups at peripheral or non-peripheral positions. The phthalocyanines were embedded in poly (methyl methacrylate) polymer in the presence of CdTe quantum dots. All complexes 1–10 were studied in the presence of CdTe quantum dots and embedded in poly (methyl methacrylate) to form thin films. Complex 3 tetrasubstituted with tert-butylphenoxy groups at non-peripheral positions was also studied in the presence of CdS, CdSe quantum dots, fullerenes, single walled carbon nanotubes. Third order nonlinear optical parameters generally increase for Pcs in the presence of CdTe quantum dots.
- Full Text:
- Date Issued: 2013
- Authors: Britton, Jonathan , Durmus, Mahmut , Khene, Samson M , Chauke, Vongani , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/241772 , vital:50968 , xlink:href="https://doi.org/10.1142/S108842461350003X"
- Description: Third order nonlinear optical properties were determined for phthalocyanine complexes 1–10 containing In, Ga and Zn central metals and tetra- or octa-substituted with benzyloxyphenoxy, phenoxy, tert-butylphenoxy and amino groups at peripheral or non-peripheral positions. The phthalocyanines were embedded in poly (methyl methacrylate) polymer in the presence of CdTe quantum dots. All complexes 1–10 were studied in the presence of CdTe quantum dots and embedded in poly (methyl methacrylate) to form thin films. Complex 3 tetrasubstituted with tert-butylphenoxy groups at non-peripheral positions was also studied in the presence of CdS, CdSe quantum dots, fullerenes, single walled carbon nanotubes. Third order nonlinear optical parameters generally increase for Pcs in the presence of CdTe quantum dots.
- Full Text:
- Date Issued: 2013
Time budgets, blood urea content, total protein and body condition scores as adaptive responses to seasonal dynamics by breeding Nguni cows and heifers reared on a sweetveld
- Authors: Mapfumo, Lizwell
- Date: 2013
- Subjects: Nguni cattle -- South Africa , Cattle -- Feed utilization efficiency -- South Africa , Beef -- Quality -- South Africa , Slaughtering and slaughter-houses -- South Africa , Cattle -- Breeding -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11826 , http://hdl.handle.net/10353/d1015738 , Nguni cattle -- South Africa , Cattle -- Feed utilization efficiency -- South Africa , Beef -- Quality -- South Africa , Slaughtering and slaughter-houses -- South Africa , Cattle -- Breeding -- South Africa
- Description: The objective of this study was to determine time budgets, blood urea content, total protein and body condition score as adaptive responses to seasonal dynamics by breeding Nguni cows and heifers reared on a sweetveld. Twenty four clinically healthy Nguni cows and heifers were selected for the study. The animals were grouped according to their parities namely: Parity 1 (n=5), Parity 2 (n=5), Parity 3-6 (old cows) (n=9) and in-calf heifers (n=5). Two separate experiments were conducted and running concurrently. In the first experiment time budgets (time spent walking, grazing, lying down, drinking water and browsing) of the cows and heifers were monitored for two consecutive days once a month, while in the second experiment blood samples were collected from the coccygeal vein once a month during weighing. Body condition scores were also determined during weighing times. Heifers maintained significantly (p0.05) of both blood urea nitrogen (BUN) (7.5±0.39 mmol/l) and TP (80.7±1.19 g/l) in November. All the animals had the least BUN levels in January (1.93±0.18 mmol/l) while the highest total protein (TP) (82.1±1.08 g/l) was recorded in February. All the animals showed distinct (p0.05) in most behavioural attributes in the cool-wet season. Heifers spent significantly (p0.05) body condition scores, amount of time spent browsing and drinking water. On the other hand, heifers (14.7±1.50%) and first parity cows (13.9±1.50%) traded-off most (p<0,05) of their time walking during the cool-dry season. Similarly heifers spent more time browsing (6.4±0.62%) forage plants (p<0.05) than all the cows during the cool-wet season. Grazing (r = 0.17) and standing (r = -0.18) were correlated (p<0.05) with all the behavioural attributes measured in this environment. It was concluded that seasonal dynamics in trade-off behaviour through time budgeting, maintenance of BUN and TP were necessary for the Nguni cows and heifers to maintain their body condition scores within a narrow range throughout the four seasons.
- Full Text:
- Date Issued: 2013
- Authors: Mapfumo, Lizwell
- Date: 2013
- Subjects: Nguni cattle -- South Africa , Cattle -- Feed utilization efficiency -- South Africa , Beef -- Quality -- South Africa , Slaughtering and slaughter-houses -- South Africa , Cattle -- Breeding -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11826 , http://hdl.handle.net/10353/d1015738 , Nguni cattle -- South Africa , Cattle -- Feed utilization efficiency -- South Africa , Beef -- Quality -- South Africa , Slaughtering and slaughter-houses -- South Africa , Cattle -- Breeding -- South Africa
- Description: The objective of this study was to determine time budgets, blood urea content, total protein and body condition score as adaptive responses to seasonal dynamics by breeding Nguni cows and heifers reared on a sweetveld. Twenty four clinically healthy Nguni cows and heifers were selected for the study. The animals were grouped according to their parities namely: Parity 1 (n=5), Parity 2 (n=5), Parity 3-6 (old cows) (n=9) and in-calf heifers (n=5). Two separate experiments were conducted and running concurrently. In the first experiment time budgets (time spent walking, grazing, lying down, drinking water and browsing) of the cows and heifers were monitored for two consecutive days once a month, while in the second experiment blood samples were collected from the coccygeal vein once a month during weighing. Body condition scores were also determined during weighing times. Heifers maintained significantly (p0.05) of both blood urea nitrogen (BUN) (7.5±0.39 mmol/l) and TP (80.7±1.19 g/l) in November. All the animals had the least BUN levels in January (1.93±0.18 mmol/l) while the highest total protein (TP) (82.1±1.08 g/l) was recorded in February. All the animals showed distinct (p0.05) in most behavioural attributes in the cool-wet season. Heifers spent significantly (p0.05) body condition scores, amount of time spent browsing and drinking water. On the other hand, heifers (14.7±1.50%) and first parity cows (13.9±1.50%) traded-off most (p<0,05) of their time walking during the cool-dry season. Similarly heifers spent more time browsing (6.4±0.62%) forage plants (p<0.05) than all the cows during the cool-wet season. Grazing (r = 0.17) and standing (r = -0.18) were correlated (p<0.05) with all the behavioural attributes measured in this environment. It was concluded that seasonal dynamics in trade-off behaviour through time budgeting, maintenance of BUN and TP were necessary for the Nguni cows and heifers to maintain their body condition scores within a narrow range throughout the four seasons.
- Full Text:
- Date Issued: 2013
Tolerance intervals for variance component models using a Bayesian simulation procedure
- Authors: Sarpong, Abeam Danso
- Date: 2013
- Subjects: Bayesian statistical decision theory , Multilevel models (Statistics)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10583 , http://hdl.handle.net/10948/d1021025
- Description: The estimation of variance components serves as an integral part of the evaluation of variation, and is of interest and required in a variety of applications (Hugo, 2012). Estimation of the among-group variance components is often desired for quantifying the variability and effectively understanding these measurements (Van Der Rijst, 2006). The methodology for determining Bayesian tolerance intervals for the one – way random effects model has originally been proposed by Wolfinger (1998) using both informative and non-informative prior distributions (Hugo, 2012). Wolfinger (1998) also provided relationships with frequentist methodologies. From a Bayesian point of view, it is important to investigate and compare the effect on coverage probabilities if negative variance components are either replaced by zero, or completely disregarded from the simulation process. This research presents a simulation-based approach for determining Bayesian tolerance intervals in variance component models when negative variance components are either replaced by zero, or completely disregarded from the simulation process. This approach handles different kinds of tolerance intervals in a straightforward fashion. It makes use of a computer-generated sample (Monte Carlo process) from the joint posterior distribution of the mean and variance parameters to construct a sample from other relevant posterior distributions. This research makes use of only non-informative Jeffreys‟ prior distributions and uses three Bayesian simulation methods. Comparative results of different tolerance intervals obtained using a method where negative variance components are either replaced by zero or completely disregarded from the simulation process, is investigated and discussed in this research.
- Full Text:
- Date Issued: 2013
- Authors: Sarpong, Abeam Danso
- Date: 2013
- Subjects: Bayesian statistical decision theory , Multilevel models (Statistics)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10583 , http://hdl.handle.net/10948/d1021025
- Description: The estimation of variance components serves as an integral part of the evaluation of variation, and is of interest and required in a variety of applications (Hugo, 2012). Estimation of the among-group variance components is often desired for quantifying the variability and effectively understanding these measurements (Van Der Rijst, 2006). The methodology for determining Bayesian tolerance intervals for the one – way random effects model has originally been proposed by Wolfinger (1998) using both informative and non-informative prior distributions (Hugo, 2012). Wolfinger (1998) also provided relationships with frequentist methodologies. From a Bayesian point of view, it is important to investigate and compare the effect on coverage probabilities if negative variance components are either replaced by zero, or completely disregarded from the simulation process. This research presents a simulation-based approach for determining Bayesian tolerance intervals in variance component models when negative variance components are either replaced by zero, or completely disregarded from the simulation process. This approach handles different kinds of tolerance intervals in a straightforward fashion. It makes use of a computer-generated sample (Monte Carlo process) from the joint posterior distribution of the mean and variance parameters to construct a sample from other relevant posterior distributions. This research makes use of only non-informative Jeffreys‟ prior distributions and uses three Bayesian simulation methods. Comparative results of different tolerance intervals obtained using a method where negative variance components are either replaced by zero or completely disregarded from the simulation process, is investigated and discussed in this research.
- Full Text:
- Date Issued: 2013
Towards a cost-efficient & standardised monitoring protocol for subtidal reef fish in the Agulhas ecoregion of South Africa
- Bernard, Anthony Thomas Firth
- Authors: Bernard, Anthony Thomas Firth
- Date: 2013
- Subjects: Reef fishes -- South Africa Reef fishes -- Monitoring--South Africa Fish stock assessment -- South Africa Coastal zone management -- South Africa Fish communities -- South Africa Marine parks and reserves -- South Africa Marine resources conservation -- South Africa Marine biodiversity conservation -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5585 , http://hdl.handle.net/10962/d1001674
- Description: Under the growing demand for marine fish resources, and the apparent and expected impacts of global climate change, there is a need to conduct long-term monitoring (LTM) to ensure effective management of resources and conservation of biodiversity. However LTM programmes often suffer from design deficiencies and fail to achieve their objectives. These deficiencies stem from the fact that insufficient consideration is afforded to the design phase, with programmes selecting methods that are not suitable to address the objectives, or are not cost-efficient, compromising the sustainability of the LTM. To facilitate the establishment of LTM programmes along the southern coast of South Africa, background research needed to be conducted to identify which methods were most appropriate for LTM of reef fish. This study presents a detailed field-based assessment of the suitability and cost-efficiency of monitoring methods for long-term monitoring of reef fish in the Agulhas Ecoregion of South Africa. The approach adopted to identify the method, or suite of methods most suited for LTM, involved (i) the selection of methods considered suitable for LTM, (ii) the individual assessment and optimisation of method performance, and (iii) the comparative assessment of the fish community sampled by the different methods. The most suited method(s) were then identified as those that provide the most comprehensive assessment of the fish community and had the highest cost-efficiency. The research was conducted between January 2008 and 2011 in the Tsitsikamma and Table Mountain National Park (TNP and TMNP, respectively) marine protected areas (MPAs) within the Agulhas Ecoregion. The methods selected included fish traps (FT), controlled angling (CA), underwater visual census (UVC), remote underwater video (RUV), baited RUV (BRUV) and remotely operated vehicles (ROV). The individual assessment and optimisation was conducted with the FT, UVC, RUV and BRUV methods. The assessment of the FT method aimed to identify the optimal soak time, and whether or not the size of the funnel entrance to the trap affected the catch. The results identified that larger funnel entrances caught more fish and soak times of 80 minutes produced the highest catches per unit effort. However the data were highly variable and the method detected few of the species typical of the region. Fish traps were also associated with high levels of mortality of fish post-release. The assessment of UVC strip transect method involved directly comparing the precision of data collected by researchers and volunteers using a novel double-observer technique (paired-transects). The results showed considerable error in both the volunteers and researchers data, however the researchers produced significantly higher precision data, compared to the volunteers. The distinction between researchers and volunteers was not evident in the data for the dominant species of fish. For all observers, the abundance of a species in the sample had a significant influence on its detectability, with locally scarce or rare species poorly detected. UVC was able to sample the majority of species typical of reefs in the region, however it appeared plagued by observer and detectability biases. The assessments of RUV and BRUV were conducted simultaneously which enabled the assessment of the effect of bait on the observed fish community. In addition the optimal deployment time for both methods to maximise species richness and abundance was determined. The results showed that BRUV, and to a lesser degree RUV, were able to effectively survey the reef fish community for the region with a 50 minute and 35 minute deployment time, respectively. Baited remote underwater video was especially good at detecting the invertebrate and generalist carnivores, and cartilaginous species. On the other hand, RUV was more effective at surveying the microinvertebrate carnivores. Remote underwater video was characterised by higher data variability, compared to BRUV, and was ultimately considered a less cost-efficient monitoring method. Comparative methods assessments were conducted during two field experiments with the FT, UVC and BRUV methods in the TMNP MPA, and the FT, CA, UVC, RUV, BRUV and ROV methods compared in the TNP MPA. The objectives of the comparison were to investigate differences in the fish communities observed with the different methods, and to determine the power of the data to detect an annual 10% growth in the fish populations over a period of five years. The results from the method comparison were in turn used to conduct the cost-benefit analysis to determine the efficiency of the different methods at achieving monitoring objectives requiring population data from multiple trophic and functional groups with the community, and from species of fisheries importance. The results indicated that FT, CA and ROV were ineffective at monitoring the reef fish community, although CA appeared to provide valuable data for the dominant fisheries species. Both CA and FT required minimal initial investment however, the variability in the data translated into high annual monitoring costs, as the required sampling effort was great. The ROV required the highest initial investment and was identified as the least cost-efficient method. Underwater visual census was able to adequately survey the bony fish within the community, however it did not detect the cartilaginous species. Underwater visual census required a large initial investment and was not cost-efficient, as a many samples were required to account for the variability in the data. Remote underwater video provided a comprehensive assessment of the reef fish community, however it too was associated with high levels of variability in the data, compared to BRUV, reducing its cost-efficiency. BRUV provided the most comprehensive assessment of the reef fish community and was associated with the highest cost-efficiency to address the community and fisheries species monitoring objectives. During the course of this research stereo-BRUV has gained considerable support as an effective reef fish monitoring method. Although not tested during this research, stereo-BRUV is preferred to BRUV as it provides accurate data on the size of fish. However, the initial investment of stereo-BRUV is over three times that required for the BRUV. Although it is recommended that a baited video technique be used for LTM in the Agulhas Ecoregion, the choice between BRUV and stereo-BRUV will depend on the specific objectives of the programme and the available budget at the implementing agency.
- Full Text:
- Date Issued: 2013
- Authors: Bernard, Anthony Thomas Firth
- Date: 2013
- Subjects: Reef fishes -- South Africa Reef fishes -- Monitoring--South Africa Fish stock assessment -- South Africa Coastal zone management -- South Africa Fish communities -- South Africa Marine parks and reserves -- South Africa Marine resources conservation -- South Africa Marine biodiversity conservation -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5585 , http://hdl.handle.net/10962/d1001674
- Description: Under the growing demand for marine fish resources, and the apparent and expected impacts of global climate change, there is a need to conduct long-term monitoring (LTM) to ensure effective management of resources and conservation of biodiversity. However LTM programmes often suffer from design deficiencies and fail to achieve their objectives. These deficiencies stem from the fact that insufficient consideration is afforded to the design phase, with programmes selecting methods that are not suitable to address the objectives, or are not cost-efficient, compromising the sustainability of the LTM. To facilitate the establishment of LTM programmes along the southern coast of South Africa, background research needed to be conducted to identify which methods were most appropriate for LTM of reef fish. This study presents a detailed field-based assessment of the suitability and cost-efficiency of monitoring methods for long-term monitoring of reef fish in the Agulhas Ecoregion of South Africa. The approach adopted to identify the method, or suite of methods most suited for LTM, involved (i) the selection of methods considered suitable for LTM, (ii) the individual assessment and optimisation of method performance, and (iii) the comparative assessment of the fish community sampled by the different methods. The most suited method(s) were then identified as those that provide the most comprehensive assessment of the fish community and had the highest cost-efficiency. The research was conducted between January 2008 and 2011 in the Tsitsikamma and Table Mountain National Park (TNP and TMNP, respectively) marine protected areas (MPAs) within the Agulhas Ecoregion. The methods selected included fish traps (FT), controlled angling (CA), underwater visual census (UVC), remote underwater video (RUV), baited RUV (BRUV) and remotely operated vehicles (ROV). The individual assessment and optimisation was conducted with the FT, UVC, RUV and BRUV methods. The assessment of the FT method aimed to identify the optimal soak time, and whether or not the size of the funnel entrance to the trap affected the catch. The results identified that larger funnel entrances caught more fish and soak times of 80 minutes produced the highest catches per unit effort. However the data were highly variable and the method detected few of the species typical of the region. Fish traps were also associated with high levels of mortality of fish post-release. The assessment of UVC strip transect method involved directly comparing the precision of data collected by researchers and volunteers using a novel double-observer technique (paired-transects). The results showed considerable error in both the volunteers and researchers data, however the researchers produced significantly higher precision data, compared to the volunteers. The distinction between researchers and volunteers was not evident in the data for the dominant species of fish. For all observers, the abundance of a species in the sample had a significant influence on its detectability, with locally scarce or rare species poorly detected. UVC was able to sample the majority of species typical of reefs in the region, however it appeared plagued by observer and detectability biases. The assessments of RUV and BRUV were conducted simultaneously which enabled the assessment of the effect of bait on the observed fish community. In addition the optimal deployment time for both methods to maximise species richness and abundance was determined. The results showed that BRUV, and to a lesser degree RUV, were able to effectively survey the reef fish community for the region with a 50 minute and 35 minute deployment time, respectively. Baited remote underwater video was especially good at detecting the invertebrate and generalist carnivores, and cartilaginous species. On the other hand, RUV was more effective at surveying the microinvertebrate carnivores. Remote underwater video was characterised by higher data variability, compared to BRUV, and was ultimately considered a less cost-efficient monitoring method. Comparative methods assessments were conducted during two field experiments with the FT, UVC and BRUV methods in the TMNP MPA, and the FT, CA, UVC, RUV, BRUV and ROV methods compared in the TNP MPA. The objectives of the comparison were to investigate differences in the fish communities observed with the different methods, and to determine the power of the data to detect an annual 10% growth in the fish populations over a period of five years. The results from the method comparison were in turn used to conduct the cost-benefit analysis to determine the efficiency of the different methods at achieving monitoring objectives requiring population data from multiple trophic and functional groups with the community, and from species of fisheries importance. The results indicated that FT, CA and ROV were ineffective at monitoring the reef fish community, although CA appeared to provide valuable data for the dominant fisheries species. Both CA and FT required minimal initial investment however, the variability in the data translated into high annual monitoring costs, as the required sampling effort was great. The ROV required the highest initial investment and was identified as the least cost-efficient method. Underwater visual census was able to adequately survey the bony fish within the community, however it did not detect the cartilaginous species. Underwater visual census required a large initial investment and was not cost-efficient, as a many samples were required to account for the variability in the data. Remote underwater video provided a comprehensive assessment of the reef fish community, however it too was associated with high levels of variability in the data, compared to BRUV, reducing its cost-efficiency. BRUV provided the most comprehensive assessment of the reef fish community and was associated with the highest cost-efficiency to address the community and fisheries species monitoring objectives. During the course of this research stereo-BRUV has gained considerable support as an effective reef fish monitoring method. Although not tested during this research, stereo-BRUV is preferred to BRUV as it provides accurate data on the size of fish. However, the initial investment of stereo-BRUV is over three times that required for the BRUV. Although it is recommended that a baited video technique be used for LTM in the Agulhas Ecoregion, the choice between BRUV and stereo-BRUV will depend on the specific objectives of the programme and the available budget at the implementing agency.
- Full Text:
- Date Issued: 2013
Towards a GPU accelerated virtual machine for massively parallel packet classification and filtering
- Nottingham, Alastair, Irwin, Barry V W
- Authors: Nottingham, Alastair , Irwin, Barry V W
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430295 , vital:72681 , https://doi.org/10.1145/2513456.2513504
- Description: This paper considers the application of GPU co-processors to accelerate the analysis of packet data, particularly within extremely large packet traces spanning months or years of traffic. Discussion focuses on the construction, performance and limitations of the experimental GPF (GPU Packet Filter), which employs a prototype massively-parallel protocol-independent multi-match algorithm to rapidly compare packets against multiple arbitrary filters. The paper concludes with a consideration of mechanisms to expand the flexibility and power of the GPF algorithm to construct a fully programmable GPU packet classification virtual machine, which can perform massively parallel classification, data-mining and data-transformation to explore and analyse packet traces. This virtual machine is a component of a larger framework of capture analysis tools which together provide capture indexing, manipulation, filtering and visualisation functions.
- Full Text:
- Date Issued: 2013
Towards a GPU accelerated virtual machine for massively parallel packet classification and filtering
- Authors: Nottingham, Alastair , Irwin, Barry V W
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430295 , vital:72681 , https://doi.org/10.1145/2513456.2513504
- Description: This paper considers the application of GPU co-processors to accelerate the analysis of packet data, particularly within extremely large packet traces spanning months or years of traffic. Discussion focuses on the construction, performance and limitations of the experimental GPF (GPU Packet Filter), which employs a prototype massively-parallel protocol-independent multi-match algorithm to rapidly compare packets against multiple arbitrary filters. The paper concludes with a consideration of mechanisms to expand the flexibility and power of the GPF algorithm to construct a fully programmable GPU packet classification virtual machine, which can perform massively parallel classification, data-mining and data-transformation to explore and analyse packet traces. This virtual machine is a component of a larger framework of capture analysis tools which together provide capture indexing, manipulation, filtering and visualisation functions.
- Full Text:
- Date Issued: 2013
Towards an efficient Namibian labour dispute resolution system : compliance with international labour standards and a comparison with the South African system
- Authors: Musukubili, Felix Zingolo
- Date: 2013
- Subjects: Dispute resolution (Law) -- Namibia , Dispute resolution (Law) -- South Africa , Labor laws and legislation , Arbitration, Industrial -- Namibia , Arbitration, Industrial -- South Africa
- Language: English
- Type: Thesis , Doctoral , LLD
- Identifier: vital:10243 , http://hdl.handle.net/10948/d1018942
- Description: The thesis examines the Namibian labour dispute resolution system by undertaking a comparative analysis of South African and international labour standards. It describes the legal provisions that exist for the effective and efficient resolution of labour disputes through an alternative dispute resolution (ADR) system, which is given recognition in national labour legislation, and in a number of international labour standards and regional labour instruments. It argues for the provision of a proactive and expeditious dispute resolution system that helps to resolve labour disputes in the most effective and efficient manner, without necessarily having to resort to the courts. The study examines the provisions of relevant international labour standards on labour dispute resolution to ascertain their adequacy as part frameworks that apply to Namibia and South Africa’s obligation to provide ADR systems that respond to the needs of the labour relations community. It is argued that ratifying particular ILO conventions creates obligations to comply with their provisions, and to apply them in national legislation and in practice. It is further argued that by having ratified those international labour standards that provide for ADR, Namibia assumes specific obligations under international law, enjoining the country to provide the required ADR system of conciliation and arbitration, which is credible and trusted by disputants and the general public. A comparative approach is adopted, which relies on primary and secondary sources of data, thereby undertaking an in-depth content analysis. The focus of the comparison is on whether the South African ADR system can inform Namibia’s application of its newly adopted ADR system. South Africa has a labour dispute resolution system that has influenced Namibian labour law, prompting Namibia to borrow its ADR system from South Africa’s advanced Commission for Conciliation Mediation and Arbitration (CCMA). In this sense, it is submitted that there are fundamental similarities and differences in the two respective systems. Ideally, disputes should be resolved at conciliation level, resulting in the minority of disputes being referred to arbitration or the Labour Court. In terms of implementation, it is argued that despite the international obligation and commitment to provide and make available free and expeditious ADR services, there are gaps that exist between the legal framework regulating the ADR system and the application thereof in practice, making the attainment of effective and efficient labour dispute resolution difficult. Disputes should be resolved as quickly and informally as possible, with little or no procedural technicalities, and without allowing them to drag on indefinitely, offering immediate solutions instead. This is far from the reality of the situation. In contrast, the study found that although the Labour Act, 2007 and the South African Labour Relations Act (LRA) have brought statutory dispute resolution within the reach of the ordinary worker, these Acts may have compounded the problems relating to dispute resolution in the respective countries. The statutes in question have created sophisticated systems of dispute resolution in which most role players are seen as failing to operate as a result of the complex and technical processes of dealing with disputes. For this reason, the author proposes several remedial interventions that look to the future and the continued provision of fast, effective and user-friendly ADR services. Solving these problems and making effective and efficient labour dispute resolution a reality calls for renewed commitment from government and social partners and investment in appropriate human and financial resources. This requires a strong political will as well as concerted efforts from all role players in the labour relations community in the two respective countries.
- Full Text:
- Date Issued: 2013
- Authors: Musukubili, Felix Zingolo
- Date: 2013
- Subjects: Dispute resolution (Law) -- Namibia , Dispute resolution (Law) -- South Africa , Labor laws and legislation , Arbitration, Industrial -- Namibia , Arbitration, Industrial -- South Africa
- Language: English
- Type: Thesis , Doctoral , LLD
- Identifier: vital:10243 , http://hdl.handle.net/10948/d1018942
- Description: The thesis examines the Namibian labour dispute resolution system by undertaking a comparative analysis of South African and international labour standards. It describes the legal provisions that exist for the effective and efficient resolution of labour disputes through an alternative dispute resolution (ADR) system, which is given recognition in national labour legislation, and in a number of international labour standards and regional labour instruments. It argues for the provision of a proactive and expeditious dispute resolution system that helps to resolve labour disputes in the most effective and efficient manner, without necessarily having to resort to the courts. The study examines the provisions of relevant international labour standards on labour dispute resolution to ascertain their adequacy as part frameworks that apply to Namibia and South Africa’s obligation to provide ADR systems that respond to the needs of the labour relations community. It is argued that ratifying particular ILO conventions creates obligations to comply with their provisions, and to apply them in national legislation and in practice. It is further argued that by having ratified those international labour standards that provide for ADR, Namibia assumes specific obligations under international law, enjoining the country to provide the required ADR system of conciliation and arbitration, which is credible and trusted by disputants and the general public. A comparative approach is adopted, which relies on primary and secondary sources of data, thereby undertaking an in-depth content analysis. The focus of the comparison is on whether the South African ADR system can inform Namibia’s application of its newly adopted ADR system. South Africa has a labour dispute resolution system that has influenced Namibian labour law, prompting Namibia to borrow its ADR system from South Africa’s advanced Commission for Conciliation Mediation and Arbitration (CCMA). In this sense, it is submitted that there are fundamental similarities and differences in the two respective systems. Ideally, disputes should be resolved at conciliation level, resulting in the minority of disputes being referred to arbitration or the Labour Court. In terms of implementation, it is argued that despite the international obligation and commitment to provide and make available free and expeditious ADR services, there are gaps that exist between the legal framework regulating the ADR system and the application thereof in practice, making the attainment of effective and efficient labour dispute resolution difficult. Disputes should be resolved as quickly and informally as possible, with little or no procedural technicalities, and without allowing them to drag on indefinitely, offering immediate solutions instead. This is far from the reality of the situation. In contrast, the study found that although the Labour Act, 2007 and the South African Labour Relations Act (LRA) have brought statutory dispute resolution within the reach of the ordinary worker, these Acts may have compounded the problems relating to dispute resolution in the respective countries. The statutes in question have created sophisticated systems of dispute resolution in which most role players are seen as failing to operate as a result of the complex and technical processes of dealing with disputes. For this reason, the author proposes several remedial interventions that look to the future and the continued provision of fast, effective and user-friendly ADR services. Solving these problems and making effective and efficient labour dispute resolution a reality calls for renewed commitment from government and social partners and investment in appropriate human and financial resources. This requires a strong political will as well as concerted efforts from all role players in the labour relations community in the two respective countries.
- Full Text:
- Date Issued: 2013
Towards an exceptional undergraduate personal learning experience: the Personal Librarian Programme, a pilot project at Rhodes University Library
- Authors: Gontshi, V
- Date: 2013
- Language: English
- Type: Conference paper
- Identifier: vital:6978 , http://hdl.handle.net/10962/d1007916
- Description: This paper is a record of a unique intervention for enhancing the Undergraduate learning experience at Rhodes University. It will focus on the establishment of the project, the experiences encountered and lessons learned thus far. In April 2013, a vibrant team of 13 librarians embarked on a Personal Librarian Pilot Project at the Rhodes University Library. The Personal Librarian Programme is primarily directed at undergraduate students at Rhodes University. In an attempt to bridge the information literacy skills gap that exists between Senior School and University in South Africa, the idea behind this programme is that each incoming first year student is assigned a Personal Librarian who will remain that individual’s contact in the library throughout his/her academic career at Rhodes University. The project came about as a result of research exploring the perceptions of both students and lecturers in the Commerce Faculty at Rhodes University with regard to Information Literacy practices and needs (Gontshi, 2011). The study revealed and recorded a shortcoming in the Information Literacy ability of students between Senior School Level and University Level. It became clear that new University students were not aware of the important link between their academic studies and the Library which in turn suggested the need to make Rhodes University librarians and the role that they play in the academic world more obvious to these new students (Gontshi, 2011). The Personal Librarian Programme was devised to fill this need. The Librarians involved in this programme include staff from all sections of the Library: circulation, faculty liaison and bibliographic/technical services. The training needs of staff who did not work directly with students were identified and the relevant training provided. The staff from Circulation and Bibliographic/Technical services sections identified a need to advance their knowledge on the use of library from a users’ perspective. The training focused on the following: “Brainstorming a research topic with a student”; “Identifying relevant databases to conduct a research topic” and “Conducting a search on relevant databases for the research topic” – this included ‘different ways of devising an effective search technique’. The training ensured a good foundation for these librarians to develop their confidence to work with users. The project, modeled on a similar programme at the Yale University Library in America, was also a direct result of Rhodes University Library’s involvement in the Carnegie Research Libraries Consortium (2009 – 2011) and a ten-week internship in the United States, seven weeks of which were spent at Yale University.
- Full Text:
- Date Issued: 2013
- Authors: Gontshi, V
- Date: 2013
- Language: English
- Type: Conference paper
- Identifier: vital:6978 , http://hdl.handle.net/10962/d1007916
- Description: This paper is a record of a unique intervention for enhancing the Undergraduate learning experience at Rhodes University. It will focus on the establishment of the project, the experiences encountered and lessons learned thus far. In April 2013, a vibrant team of 13 librarians embarked on a Personal Librarian Pilot Project at the Rhodes University Library. The Personal Librarian Programme is primarily directed at undergraduate students at Rhodes University. In an attempt to bridge the information literacy skills gap that exists between Senior School and University in South Africa, the idea behind this programme is that each incoming first year student is assigned a Personal Librarian who will remain that individual’s contact in the library throughout his/her academic career at Rhodes University. The project came about as a result of research exploring the perceptions of both students and lecturers in the Commerce Faculty at Rhodes University with regard to Information Literacy practices and needs (Gontshi, 2011). The study revealed and recorded a shortcoming in the Information Literacy ability of students between Senior School Level and University Level. It became clear that new University students were not aware of the important link between their academic studies and the Library which in turn suggested the need to make Rhodes University librarians and the role that they play in the academic world more obvious to these new students (Gontshi, 2011). The Personal Librarian Programme was devised to fill this need. The Librarians involved in this programme include staff from all sections of the Library: circulation, faculty liaison and bibliographic/technical services. The training needs of staff who did not work directly with students were identified and the relevant training provided. The staff from Circulation and Bibliographic/Technical services sections identified a need to advance their knowledge on the use of library from a users’ perspective. The training focused on the following: “Brainstorming a research topic with a student”; “Identifying relevant databases to conduct a research topic” and “Conducting a search on relevant databases for the research topic” – this included ‘different ways of devising an effective search technique’. The training ensured a good foundation for these librarians to develop their confidence to work with users. The project, modeled on a similar programme at the Yale University Library in America, was also a direct result of Rhodes University Library’s involvement in the Carnegie Research Libraries Consortium (2009 – 2011) and a ten-week internship in the United States, seven weeks of which were spent at Yale University.
- Full Text:
- Date Issued: 2013
Towards an exceptional Undergraduate Personal Learning Experience: the Personal Librarian Programme, a pilot project at Rhodes University Library
- Authors: Gontshi, V
- Date: 2013
- Language: English
- Type: Article
- Identifier: vital:6985 , http://hdl.handle.net/10962/d1007918
- Description: This paper is a record of a unique intervention for enhancing the undergraduate learning experience at Rhodes University. It focuses on the establishment of the project, the experiences encountered and lessons learned thus far. In April 2013, a team of 13 librarians embarked on a Personal Librarian Pilot Project at the Rhodes University Library. The Personal Librarian Programme is primarily directed at undergraduate students at Rhodes University. In an attempt to bridge the information literacy skills gap that exists between Senior School and University in South Africa, the idea behind this programme is that each incoming first year student is assigned a Personal Librarian who will remain that individual’s contact in the library throughout his/her academic career at Rhodes University. The project came about as a result of research exploring the perceptions of both students and lecturers in the Commerce Faculty at Rhodes University with regard to Information Literacy practices and needs (Gontshi, 2011). The study revealed and recorded a shortcoming in the Information Literacy ability of students between Senior School Level and University Level. It became clear that new University students were not aware of the important link between their academic studies and the Library which in turn suggested the need to make Rhodes University librarians and the role that they play in the academic world more obvious to these new students (Gontshi, 2011). The Personal Librarian Programme was devised to fill this need. The Librarians involved in this programme include staff from all sections of the Library: circulation, faculty liaison and bibliographic/technical services. The training needs of staff who did not work directly with students were identified and the relevant training provided. The staff from circulation and bibliographic/technical services sections identified a need to advance their knowledge in the use of the library from a users’ perspective. The training focused on the following: “Brainstorming a research topic with a student”; “Identifying relevant databases to conduct a research topic” and “Conducting a search on relevant databases for the research topic” – this included different ways of devising an effective search technique. The training ensured a good foundation for these librarians to develop their confidence to work with users. The project, modeled on a similar programme at the Yale University Library in the United States of America, was also a direct result of Rhodes University Library’s involvement in the Carnegie Research Libraries Consortium (2009 – 2011) and the author’s ten-week internship in the United States, seven weeks of which were spent at Yale University.
- Full Text:
- Date Issued: 2013
- Authors: Gontshi, V
- Date: 2013
- Language: English
- Type: Article
- Identifier: vital:6985 , http://hdl.handle.net/10962/d1007918
- Description: This paper is a record of a unique intervention for enhancing the undergraduate learning experience at Rhodes University. It focuses on the establishment of the project, the experiences encountered and lessons learned thus far. In April 2013, a team of 13 librarians embarked on a Personal Librarian Pilot Project at the Rhodes University Library. The Personal Librarian Programme is primarily directed at undergraduate students at Rhodes University. In an attempt to bridge the information literacy skills gap that exists between Senior School and University in South Africa, the idea behind this programme is that each incoming first year student is assigned a Personal Librarian who will remain that individual’s contact in the library throughout his/her academic career at Rhodes University. The project came about as a result of research exploring the perceptions of both students and lecturers in the Commerce Faculty at Rhodes University with regard to Information Literacy practices and needs (Gontshi, 2011). The study revealed and recorded a shortcoming in the Information Literacy ability of students between Senior School Level and University Level. It became clear that new University students were not aware of the important link between their academic studies and the Library which in turn suggested the need to make Rhodes University librarians and the role that they play in the academic world more obvious to these new students (Gontshi, 2011). The Personal Librarian Programme was devised to fill this need. The Librarians involved in this programme include staff from all sections of the Library: circulation, faculty liaison and bibliographic/technical services. The training needs of staff who did not work directly with students were identified and the relevant training provided. The staff from circulation and bibliographic/technical services sections identified a need to advance their knowledge in the use of the library from a users’ perspective. The training focused on the following: “Brainstorming a research topic with a student”; “Identifying relevant databases to conduct a research topic” and “Conducting a search on relevant databases for the research topic” – this included different ways of devising an effective search technique. The training ensured a good foundation for these librarians to develop their confidence to work with users. The project, modeled on a similar programme at the Yale University Library in the United States of America, was also a direct result of Rhodes University Library’s involvement in the Carnegie Research Libraries Consortium (2009 – 2011) and the author’s ten-week internship in the United States, seven weeks of which were spent at Yale University.
- Full Text:
- Date Issued: 2013
Towards an information security awareness process for engineering SMEs in emerging economies
- Authors: Gundu, Tapiwa
- Date: 2013
- Subjects: Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11138 , http://hdl.handle.net/10353/d1007179 , Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Description: With most employees in Engineering Small and Medium Enterprises (SME) now having access to their own personal workstations, the need for information security management to safeguard against loss/alteration or theft of the firms’ important information has increased. These Engineering SMEs tend to be more concerned with vulnerabilities from external threats, although industry research suggests that a substantial proportion of security incidents originate from insiders within the firm. Hence, technical preventative measures such as antivirus software and firewalls are proving to solve only part of the problem as the employees controlling them lack adequate information security knowledge. This tends to expose a firm to risk and costly mistakes made by naïve/uninformed employees. This dissertation presents an information security awareness process that seeks to cultivate positive security behaviours using a behavioural intention model based on the Theory of Reasoned Action, Protection Motivation Theory and the Behaviourism Theory. The process and model have been refined and verified using expert review and tested through action research at an Engineering SME in South Africa. The main finding was information security levels of employees within the firm were low, but the proposed information security awareness process increased their knowledge thereby positively altering their behaviour.
- Full Text:
- Date Issued: 2013
- Authors: Gundu, Tapiwa
- Date: 2013
- Subjects: Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11138 , http://hdl.handle.net/10353/d1007179 , Computer security -- South Africa , Information technology -- South Africa , Computer networks -- Security measures -- South Africa , Information resources management -- South Africa , Small business -- South Africa , Engineering firms -- South Africa , Confidential communications -- South Africa , Information Security Awareness , Information Security Behaviour , Information Security Training
- Description: With most employees in Engineering Small and Medium Enterprises (SME) now having access to their own personal workstations, the need for information security management to safeguard against loss/alteration or theft of the firms’ important information has increased. These Engineering SMEs tend to be more concerned with vulnerabilities from external threats, although industry research suggests that a substantial proportion of security incidents originate from insiders within the firm. Hence, technical preventative measures such as antivirus software and firewalls are proving to solve only part of the problem as the employees controlling them lack adequate information security knowledge. This tends to expose a firm to risk and costly mistakes made by naïve/uninformed employees. This dissertation presents an information security awareness process that seeks to cultivate positive security behaviours using a behavioural intention model based on the Theory of Reasoned Action, Protection Motivation Theory and the Behaviourism Theory. The process and model have been refined and verified using expert review and tested through action research at an Engineering SME in South Africa. The main finding was information security levels of employees within the firm were low, but the proposed information security awareness process increased their knowledge thereby positively altering their behaviour.
- Full Text:
- Date Issued: 2013
Towards identifying how knowledge management concepts may be applied to enhance the tendering process in South African public sector institutions
- Authors: Kasi, Sizukisa Bridget
- Date: 2013
- Subjects: Letting of contracts -- South Africa , Knowledge management , Public contracts -- South Africa , Transparency in government -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:1150 , http://hdl.handle.net/10962/d1007741 , Letting of contracts -- South Africa , Knowledge management , Public contracts -- South Africa , Transparency in government -- South Africa
- Description: The state of the Tendering Process in South African Government Institutions has become an area of concern in recent years with issues related to transparency, governance and rigid retrospective procedures being cited as impediments to efficiency. In tum, Knowledge Management (KM) and its ability to be applied to all types of organisations to increase efficiency has been popularised extensively. An analysis of KM literature suggested that the principles of KM may be used to increase efficiency and create competitive advantage. This study attempted to identify whether the benefits gained by other organisations through the application of Knowledge Management principles, could be applied to the Tendering Process in South African Government Institutions. The study sought to identify how Knowledge Value Chain by Wang and Ahmed (2005) may be leveraged to create an enhanced Tendering Process. The study then reviewed the Tendering Processes conducted in Australia, United States of America, Malaysia and South Africa and sought to identify the common steps in a tendering process in order to construct a standard tendering process. The Knowledge Value Chain was then applied to this process to create a standard tendering process enhanced by Knowledge Management Principles. The model was compared to the processes currently conducted in two Government institutions and two parastals. The findings indicated that the model is well suited for Government Organisations and would assist in the creation of greater transparency, however the practical implementation of the model is yet unlikely as the model suggest electronic access to information, and the process in South African Government Institutions is predominately paper-based.
- Full Text:
- Date Issued: 2013
- Authors: Kasi, Sizukisa Bridget
- Date: 2013
- Subjects: Letting of contracts -- South Africa , Knowledge management , Public contracts -- South Africa , Transparency in government -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:1150 , http://hdl.handle.net/10962/d1007741 , Letting of contracts -- South Africa , Knowledge management , Public contracts -- South Africa , Transparency in government -- South Africa
- Description: The state of the Tendering Process in South African Government Institutions has become an area of concern in recent years with issues related to transparency, governance and rigid retrospective procedures being cited as impediments to efficiency. In tum, Knowledge Management (KM) and its ability to be applied to all types of organisations to increase efficiency has been popularised extensively. An analysis of KM literature suggested that the principles of KM may be used to increase efficiency and create competitive advantage. This study attempted to identify whether the benefits gained by other organisations through the application of Knowledge Management principles, could be applied to the Tendering Process in South African Government Institutions. The study sought to identify how Knowledge Value Chain by Wang and Ahmed (2005) may be leveraged to create an enhanced Tendering Process. The study then reviewed the Tendering Processes conducted in Australia, United States of America, Malaysia and South Africa and sought to identify the common steps in a tendering process in order to construct a standard tendering process. The Knowledge Value Chain was then applied to this process to create a standard tendering process enhanced by Knowledge Management Principles. The model was compared to the processes currently conducted in two Government institutions and two parastals. The findings indicated that the model is well suited for Government Organisations and would assist in the creation of greater transparency, however the practical implementation of the model is yet unlikely as the model suggest electronic access to information, and the process in South African Government Institutions is predominately paper-based.
- Full Text:
- Date Issued: 2013
Towards the development of a mycoinsecticide to control white grubs (Coleoptera: Scarabaeidae) in South African sugarcane
- Authors: Goble, Tarryn Anne
- Date: 2013
- Subjects: Insecticides -- Environmental aspects Insecticides -- Toxicology Beetles -- South Africa -- KwaZulu-Natal Beetles -- Control -- South Africa -- KwaZulu-Natal Coleophoridae -- South Africa -- KwaZulu-Natal Scarabaeidae -- South Africa -- KwaZulu-Natal Sugarcane -- Diseases and pests -- South Africa -- KwaZulu-Natal Sugarcane -- Diseases and pests -- Control -- South Africa -- KwaZulu-Natal , Insecticides
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5586 , http://hdl.handle.net/10962/d1001748
- Description: In the KwaZulu-Natal (KZN) Midlands North region of South Africa, the importance and increased prevalence of endemic scarabaeids, particularly Hypopholis sommeri Burmeister and Schizonycha affinis Boheman (Coleoptera: Melolonthinae), as soil pests of sugarcane, and a need for their control was established. The development of a mycoinsecticide offers an environmentally friendly alternative to chemical insecticides. The identification of a diversity of white grub species, in two Scarabaeidae subfamilies, representing seven genera were collected in sugarcane as a pest complex. Hypopholis sommeri and S. affinis were the most prevalent species. The increased seasonal abundances, diversity and highly aggregated nature of these scarabaeid species in summer months, suggested that targeting and control strategies for these pests should be considered in this season. Increased rainfall, relative humidity and soil temperatures were linked to the increased occurrence of scarab adults and neonate grubs. Beauveria brongniartii (Saccardo) Petch epizootics were recorded at two sites in the KZN Midlands North on H. sommeri. Seventeen different fluorescently-labelled microsatellite PCR primers were used to target 78 isolates of Beauveria sp. DNA. Microsatellite data resolved two distinct clusters of Beauveria isolates which represented the Beauveria bassiana senso stricto (Balsamo) Vuillemin and B. brongniartii species groups. These groupings were supported by two gene regions, the nuclear ribosomal Internal Transcribed Spacer (ITS) and the nuclear B locus (Bloc) gene of which 23 exemplar Beauveria isolates were represented and sequenced. When microsatellite data were analysed, 26 haplotypes among 58 isolates of B. brongniartii were distinguished. Relatively low levels of genetic diversity were detected in B. brongniartii and isolates were shown to be closely related. There was no genetic differentiation between the two sites, Harden Heights and Canema in the KZN Midlands North. High gene flow from swarming H. sommeri beetles is the proposed mechanism for this lack of genetic differentiation between populations. Microsatellite analyses also showed that B. brongniartii conidia were being cycled from arboreal to subterranean habitats in the environment by H. sommeri beetles. This was the first record of this species of fungus causing epizootics on the larvae and adults of H. sommeri in South Africa. The virulence of 21 isolates of Beauveria brongniartii and two isolates of B. bassiana were evaluated against the adults and larvae of S. affinis and the adults of H. sommeri and Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae). Despite being closely-related, B. brongniartii isolates varied significantly in their virulence towards different hosts and highlighted the host specific nature of B. brongniartii towards S. affinis when compared to B. bassiana. Adults of S. affinis were significantly more susceptible to B. brongniartii isolates than the second (L2) or third instar (L3) grubs. The median lethal time (LT₅₀) of the most virulent B. brongniartii isolate (C13) against S. affinis adults was 7.8 days and probit analysis estimated a median lethal concentration (LC₅₀) of 4.4×10⁷ conidia/ml⁻¹. When L2 grubs were treated with a concentration of 1.0×10⁸ conidia/ml⁻¹, B. brongniartii isolates HHWG1, HHB39A and C17 caused mortality in L2 grubs within 18.4-19.8 days (LT₅₀). Beauveria brongniartii isolate HHWG1 was tested against the L3 grubs of S. affinis at four different concentrations. At the lowest concentration (1×10⁶ conidia/ml⁻¹), the LT₅₀ was 25.8 days, and at the highest concentration (1×10⁹ conidia/ml⁻¹) the LT₅₀ dropped to 15.1 days. The persistence of B. bassiana isolate 4222 formulated on rice and wheat bran and buried at eight field sites in the KZN Midlands North was evaluated by plating out a suspension of treated soil onto a selective medium. All eight field sites showed a significant decline in B. bassiana CFUs per gram of soil over time, with few conidia still present in the samples after a year. Greater declines in CFUs were observed at some sites but there were no significant differences observed in the persistence of conidia formulated on rice or wheat bran as carriers. Overall, poor persistence of B. bassiana isolate 4222 was attributed to suboptimum temperatures, rainfall, which rapidly degraded the nutritive carriers, attenuated fungal genotype and the action of antagonistic soil microbes. Growers’ perceptions of white grubs as pests and the feasibility of a mycoinsecticide market were evaluated by means of a semi-structured questionnaire. The study showed that the reduced feasibility of application, general lack of potential demand for a product, high cost factors and most importantly, the lack of pest perception, were factors which would negatively affect the adoption of a granular mycoinsecticide. Growers however exhibited a positive attitude towards mycoinsecticides, and showed all the relevant attributes for successful technology adoption. It is recommended that because B. brongniartii epizootics were recorded on target pests which indicated good host specificity, dispersal ability and persistence of the fungus in the intended environment of application; that a mycoinsecticide based on this fungal species be developed. What will likely increase adoption and success of a mycoinsecticide is collaboration between various industries partners to increases market potential in other crops such as Acacia mearnsii De Wild (Fabales: Fabaceae).
- Full Text:
- Date Issued: 2013
- Authors: Goble, Tarryn Anne
- Date: 2013
- Subjects: Insecticides -- Environmental aspects Insecticides -- Toxicology Beetles -- South Africa -- KwaZulu-Natal Beetles -- Control -- South Africa -- KwaZulu-Natal Coleophoridae -- South Africa -- KwaZulu-Natal Scarabaeidae -- South Africa -- KwaZulu-Natal Sugarcane -- Diseases and pests -- South Africa -- KwaZulu-Natal Sugarcane -- Diseases and pests -- Control -- South Africa -- KwaZulu-Natal , Insecticides
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5586 , http://hdl.handle.net/10962/d1001748
- Description: In the KwaZulu-Natal (KZN) Midlands North region of South Africa, the importance and increased prevalence of endemic scarabaeids, particularly Hypopholis sommeri Burmeister and Schizonycha affinis Boheman (Coleoptera: Melolonthinae), as soil pests of sugarcane, and a need for their control was established. The development of a mycoinsecticide offers an environmentally friendly alternative to chemical insecticides. The identification of a diversity of white grub species, in two Scarabaeidae subfamilies, representing seven genera were collected in sugarcane as a pest complex. Hypopholis sommeri and S. affinis were the most prevalent species. The increased seasonal abundances, diversity and highly aggregated nature of these scarabaeid species in summer months, suggested that targeting and control strategies for these pests should be considered in this season. Increased rainfall, relative humidity and soil temperatures were linked to the increased occurrence of scarab adults and neonate grubs. Beauveria brongniartii (Saccardo) Petch epizootics were recorded at two sites in the KZN Midlands North on H. sommeri. Seventeen different fluorescently-labelled microsatellite PCR primers were used to target 78 isolates of Beauveria sp. DNA. Microsatellite data resolved two distinct clusters of Beauveria isolates which represented the Beauveria bassiana senso stricto (Balsamo) Vuillemin and B. brongniartii species groups. These groupings were supported by two gene regions, the nuclear ribosomal Internal Transcribed Spacer (ITS) and the nuclear B locus (Bloc) gene of which 23 exemplar Beauveria isolates were represented and sequenced. When microsatellite data were analysed, 26 haplotypes among 58 isolates of B. brongniartii were distinguished. Relatively low levels of genetic diversity were detected in B. brongniartii and isolates were shown to be closely related. There was no genetic differentiation between the two sites, Harden Heights and Canema in the KZN Midlands North. High gene flow from swarming H. sommeri beetles is the proposed mechanism for this lack of genetic differentiation between populations. Microsatellite analyses also showed that B. brongniartii conidia were being cycled from arboreal to subterranean habitats in the environment by H. sommeri beetles. This was the first record of this species of fungus causing epizootics on the larvae and adults of H. sommeri in South Africa. The virulence of 21 isolates of Beauveria brongniartii and two isolates of B. bassiana were evaluated against the adults and larvae of S. affinis and the adults of H. sommeri and Tenebrio molitor Linnaeus (Coleoptera: Tenebrionidae). Despite being closely-related, B. brongniartii isolates varied significantly in their virulence towards different hosts and highlighted the host specific nature of B. brongniartii towards S. affinis when compared to B. bassiana. Adults of S. affinis were significantly more susceptible to B. brongniartii isolates than the second (L2) or third instar (L3) grubs. The median lethal time (LT₅₀) of the most virulent B. brongniartii isolate (C13) against S. affinis adults was 7.8 days and probit analysis estimated a median lethal concentration (LC₅₀) of 4.4×10⁷ conidia/ml⁻¹. When L2 grubs were treated with a concentration of 1.0×10⁸ conidia/ml⁻¹, B. brongniartii isolates HHWG1, HHB39A and C17 caused mortality in L2 grubs within 18.4-19.8 days (LT₅₀). Beauveria brongniartii isolate HHWG1 was tested against the L3 grubs of S. affinis at four different concentrations. At the lowest concentration (1×10⁶ conidia/ml⁻¹), the LT₅₀ was 25.8 days, and at the highest concentration (1×10⁹ conidia/ml⁻¹) the LT₅₀ dropped to 15.1 days. The persistence of B. bassiana isolate 4222 formulated on rice and wheat bran and buried at eight field sites in the KZN Midlands North was evaluated by plating out a suspension of treated soil onto a selective medium. All eight field sites showed a significant decline in B. bassiana CFUs per gram of soil over time, with few conidia still present in the samples after a year. Greater declines in CFUs were observed at some sites but there were no significant differences observed in the persistence of conidia formulated on rice or wheat bran as carriers. Overall, poor persistence of B. bassiana isolate 4222 was attributed to suboptimum temperatures, rainfall, which rapidly degraded the nutritive carriers, attenuated fungal genotype and the action of antagonistic soil microbes. Growers’ perceptions of white grubs as pests and the feasibility of a mycoinsecticide market were evaluated by means of a semi-structured questionnaire. The study showed that the reduced feasibility of application, general lack of potential demand for a product, high cost factors and most importantly, the lack of pest perception, were factors which would negatively affect the adoption of a granular mycoinsecticide. Growers however exhibited a positive attitude towards mycoinsecticides, and showed all the relevant attributes for successful technology adoption. It is recommended that because B. brongniartii epizootics were recorded on target pests which indicated good host specificity, dispersal ability and persistence of the fungus in the intended environment of application; that a mycoinsecticide based on this fungal species be developed. What will likely increase adoption and success of a mycoinsecticide is collaboration between various industries partners to increases market potential in other crops such as Acacia mearnsii De Wild (Fabales: Fabaceae).
- Full Text:
- Date Issued: 2013
Track-one diplomacy and post-conflict reconstruction : Kenya's mediation of Somali conflict and strategic intervention avenues
- Mwanika, Philip Arthur Njuguna
- Authors: Mwanika, Philip Arthur Njuguna
- Date: 2013
- Subjects: Mediation -- Somalia , Mediation -- Kenya , Diplomacy
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8338 , http://hdl.handle.net/10948/d1020628
- Description: This study focuses on the Kenyan mediation of the Somali conflict and strategic intervention engagement between 2002 and 2012. The core aim of the study was to establish and evaluate the role and effects of track-one diplomacy on conflict management and post-conflict reconstruction as pertains to the Somali conflict and on the basis of the Kenyan experience. A qualitative approach was followed in this study. It employed a descriptive, explanatory and analytical case-study method. The data were collected through interviews and documentary analysis. The twenty-two participants in the study were drawn from the Kenyan Foreign Ministry, the Inter-Governmental Authority on Development (IGAD), the Regional Centre on Small Arms and Light Weapons (RECSA), the International Peace Support Training Centre (IPSTC), the East African Standby Force Co-ordination Mechanism (EASFCOM), the African Union Mission in Somalia (AMISOM), the United Nations Political Office for Somalia (UNPOS), the African Peace Forum Organization (APFO), and selected respondents representing the Somali people. The documents comprised policy treatises, protocols, treaties, and communiqués highlighting the actions of the Kenyan government and other track-one actors in the Somali peace endeavour. Other scholarly research on official diplomacy, soft-power and conflict management by small States – in particular African case studies – were also utilised. The study revealed that Kenya’s diplomatic and stabilisation efforts had their own dynamics and challenges. This is especially so with regard to the preferred policy option of exercising diplomacy that utilises soft-power resources. This diplomacy had to contend with the challenges of dealing with sensitive aspects of the process. These sensitive aspects involved a recognition of and complicated engagement with the Somali conflict-constituencies, and a complex mapping of various actors and their respective interests. Contrary to the expected outcomes, interests and issues 17 proliferated, and the original peace-making agenda was consistently slowed down and complicated. The study also revealed that Kenya ought to have exercised a non-directive role in dealing with the different Somali conflict players. This role provides that such an “interested mediator” ought to exercise some considerable influence over the mediation environment. It also emerged from the study that as pertains to the current peace-making developments in Somalia that began in 2005 onwards to 2012, it is important that different intermediary co-operative roles be recognized and utilised. Towards this end, the study recommends that Kenya’s diplomacy should adopt a strategy of co-operation with those regional regimes that it helped to establish. A case in reference is the diplomatic opportunity of utilising regional arms control and disarmament diplomacy. This is Kenya’s intermediary co-operative role with RECSA, which is mandated to support arms control and disarmament implementation efforts in the East African region. The study also recommends that strategic foreign policy and regional actions by Kenya should be taken up given its new lease of engagement, noting that it was officially integrated into AMISOM in 2012. The study posited that in the ongoing engagement environment there would be a ‘revisiting’ of the experiences and complexities of the first phase of engagement (2002-2004). It is, therefore, recommended that Kenya should seize this opportunity and continue with its ‘facilitative and enabling role’ in its peace diplomacy, while utilising the lessons learnt in past engagements.
- Full Text:
- Date Issued: 2013
- Authors: Mwanika, Philip Arthur Njuguna
- Date: 2013
- Subjects: Mediation -- Somalia , Mediation -- Kenya , Diplomacy
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8338 , http://hdl.handle.net/10948/d1020628
- Description: This study focuses on the Kenyan mediation of the Somali conflict and strategic intervention engagement between 2002 and 2012. The core aim of the study was to establish and evaluate the role and effects of track-one diplomacy on conflict management and post-conflict reconstruction as pertains to the Somali conflict and on the basis of the Kenyan experience. A qualitative approach was followed in this study. It employed a descriptive, explanatory and analytical case-study method. The data were collected through interviews and documentary analysis. The twenty-two participants in the study were drawn from the Kenyan Foreign Ministry, the Inter-Governmental Authority on Development (IGAD), the Regional Centre on Small Arms and Light Weapons (RECSA), the International Peace Support Training Centre (IPSTC), the East African Standby Force Co-ordination Mechanism (EASFCOM), the African Union Mission in Somalia (AMISOM), the United Nations Political Office for Somalia (UNPOS), the African Peace Forum Organization (APFO), and selected respondents representing the Somali people. The documents comprised policy treatises, protocols, treaties, and communiqués highlighting the actions of the Kenyan government and other track-one actors in the Somali peace endeavour. Other scholarly research on official diplomacy, soft-power and conflict management by small States – in particular African case studies – were also utilised. The study revealed that Kenya’s diplomatic and stabilisation efforts had their own dynamics and challenges. This is especially so with regard to the preferred policy option of exercising diplomacy that utilises soft-power resources. This diplomacy had to contend with the challenges of dealing with sensitive aspects of the process. These sensitive aspects involved a recognition of and complicated engagement with the Somali conflict-constituencies, and a complex mapping of various actors and their respective interests. Contrary to the expected outcomes, interests and issues 17 proliferated, and the original peace-making agenda was consistently slowed down and complicated. The study also revealed that Kenya ought to have exercised a non-directive role in dealing with the different Somali conflict players. This role provides that such an “interested mediator” ought to exercise some considerable influence over the mediation environment. It also emerged from the study that as pertains to the current peace-making developments in Somalia that began in 2005 onwards to 2012, it is important that different intermediary co-operative roles be recognized and utilised. Towards this end, the study recommends that Kenya’s diplomacy should adopt a strategy of co-operation with those regional regimes that it helped to establish. A case in reference is the diplomatic opportunity of utilising regional arms control and disarmament diplomacy. This is Kenya’s intermediary co-operative role with RECSA, which is mandated to support arms control and disarmament implementation efforts in the East African region. The study also recommends that strategic foreign policy and regional actions by Kenya should be taken up given its new lease of engagement, noting that it was officially integrated into AMISOM in 2012. The study posited that in the ongoing engagement environment there would be a ‘revisiting’ of the experiences and complexities of the first phase of engagement (2002-2004). It is, therefore, recommended that Kenya should seize this opportunity and continue with its ‘facilitative and enabling role’ in its peace diplomacy, while utilising the lessons learnt in past engagements.
- Full Text:
- Date Issued: 2013
Trade liberalisation and poverty alleviation in South Africa
- Authors: Gundu, Tafadzwa Amanda
- Date: 2013
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11480 , http://hdl.handle.net/10353/d1015283
- Description: The study attempts to address, from amongst the key issues in the current debate on economic development: the effect of trade liberalization on poverty. The relationship between trade liberalization and poverty levels is investigated in both the long run and the short run for South Africa. To measure trade liberalization, trade openness is used as the standard index. Foreign Direct Investment (FDI) measures financial openness while taxation is a measure of public intervention in the country. Consumption per capita is a proxy for poverty and Real Gross Domestic Product (RGDP) controlled for economic growth. Applying the Johansen Co-integration Techniques and Error Correction Method, empirical results suggest that trade liberalization has a cumulative effect on poverty reduction in the long-run. Lower poverty level is associated with low taxation and high foreign direct investment, particularly in the short run, in South Africa. Therefore, it is recommended that the government needs to design and pursue active development strategies to benefit from openness. There is also a need to enhance the tax revenues of the state through better collection of revenues, and administrative reforms rather than expenditure cut backs, which can reduce the effectiveness of the public sector. The government needs to strengthen allocation of funds to social sectors so as to bring the issue of poverty reduction to the central stage of economic policy making.
- Full Text:
- Date Issued: 2013
- Authors: Gundu, Tafadzwa Amanda
- Date: 2013
- Language: English
- Type: Thesis , Masters , M Com
- Identifier: vital:11480 , http://hdl.handle.net/10353/d1015283
- Description: The study attempts to address, from amongst the key issues in the current debate on economic development: the effect of trade liberalization on poverty. The relationship between trade liberalization and poverty levels is investigated in both the long run and the short run for South Africa. To measure trade liberalization, trade openness is used as the standard index. Foreign Direct Investment (FDI) measures financial openness while taxation is a measure of public intervention in the country. Consumption per capita is a proxy for poverty and Real Gross Domestic Product (RGDP) controlled for economic growth. Applying the Johansen Co-integration Techniques and Error Correction Method, empirical results suggest that trade liberalization has a cumulative effect on poverty reduction in the long-run. Lower poverty level is associated with low taxation and high foreign direct investment, particularly in the short run, in South Africa. Therefore, it is recommended that the government needs to design and pursue active development strategies to benefit from openness. There is also a need to enhance the tax revenues of the state through better collection of revenues, and administrative reforms rather than expenditure cut backs, which can reduce the effectiveness of the public sector. The government needs to strengthen allocation of funds to social sectors so as to bring the issue of poverty reduction to the central stage of economic policy making.
- Full Text:
- Date Issued: 2013
Trade union responses to the casualisation of labour in the Eastern Cape
- Authors: Loni, Kholosa Siphe
- Date: 2013 , 2013-04-23
- Subjects: Labor unions -- Research -- South Africa -- Eastern Cape Casual labor -- Research -- South Africa -- Eastern Cape Precarious employment -- Research -- South Africa -- Eastern Cape Temporary employees -- Legal status, laws, etc. -- Research -- South Africa Industrial relations -- South Africa -- Eastern Cape Labor and globalization
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3286 , http://hdl.handle.net/10962/d1003056
- Description: This thesis focuses on trade union responses to casualisation of labour in the Eastern Cape. In the context of increased globalization, some employers have attempted to achieve high production outputs while saving on operational costs. The ‘flexible firm’ model is used as but one theory to explain increased flexibility in the workplace. In an effort to achieve increasingly flexible firms that may swiftly respond to subsequent challenges such as increased international competition, employers have been seen incorporating more non-standard workers in the form of casual, temporary, part-time, and seasonal workers. This has been a matter of concern for the unions for numerous reasons: some nonstandard workers are subjected to sub-standard working conditions, irregular working hours and little or no benefits; casual work is arranged in such a way that it is virtually impossible for these workers to join a union – a predicament which bears a high possibility of a decline in the typically standard worker–based membership of trade unions; and non-standard workers are often faced with the representation gap predicament which entails that they are not adequately protected by labour legislation. The thesis explores the responses of trade unions to these challenges, and the proposals that they have made in this regard, by focusing on the sectoral dynamics of non-standard labour in the province. It further discusses the regulation of non-standard labour, as poor representation of some non-standard workers bears consequences for the regulation of the practice of non-standard work. The research adopted qualitative research techniques in the form of semi-structured interviews, and used purposive and snowball sampling in accessing relevant data for analysis purposes.
- Full Text:
- Date Issued: 2013
- Authors: Loni, Kholosa Siphe
- Date: 2013 , 2013-04-23
- Subjects: Labor unions -- Research -- South Africa -- Eastern Cape Casual labor -- Research -- South Africa -- Eastern Cape Precarious employment -- Research -- South Africa -- Eastern Cape Temporary employees -- Legal status, laws, etc. -- Research -- South Africa Industrial relations -- South Africa -- Eastern Cape Labor and globalization
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3286 , http://hdl.handle.net/10962/d1003056
- Description: This thesis focuses on trade union responses to casualisation of labour in the Eastern Cape. In the context of increased globalization, some employers have attempted to achieve high production outputs while saving on operational costs. The ‘flexible firm’ model is used as but one theory to explain increased flexibility in the workplace. In an effort to achieve increasingly flexible firms that may swiftly respond to subsequent challenges such as increased international competition, employers have been seen incorporating more non-standard workers in the form of casual, temporary, part-time, and seasonal workers. This has been a matter of concern for the unions for numerous reasons: some nonstandard workers are subjected to sub-standard working conditions, irregular working hours and little or no benefits; casual work is arranged in such a way that it is virtually impossible for these workers to join a union – a predicament which bears a high possibility of a decline in the typically standard worker–based membership of trade unions; and non-standard workers are often faced with the representation gap predicament which entails that they are not adequately protected by labour legislation. The thesis explores the responses of trade unions to these challenges, and the proposals that they have made in this regard, by focusing on the sectoral dynamics of non-standard labour in the province. It further discusses the regulation of non-standard labour, as poor representation of some non-standard workers bears consequences for the regulation of the practice of non-standard work. The research adopted qualitative research techniques in the form of semi-structured interviews, and used purposive and snowball sampling in accessing relevant data for analysis purposes.
- Full Text:
- Date Issued: 2013
Traditions and new niches: An overview of environmental education curriculum and learning research
- Lotz-Sisitka, Heila, Fien, John, Ketlhoilwe, Mphemelang
- Authors: Lotz-Sisitka, Heila , Fien, John , Ketlhoilwe, Mphemelang
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437323 , vital:73370 , ISBN 9780203813331 , https://www.taylorfrancis.com/chapters/edit/10.4324/9780203813331-26/traditions-new-niches-heila-lotz-sisitka-john-fien-mphemelang-ketlhoilwe
- Description: In this chapter we consider the traditions of environmental ed-ucation curriculum and learning research, their relationship to wider education research traditions, and point to new niches for curriculum and learning research, as opened up (in part) 1 through the contributions in this section of the IRHEE. The chapter points to the fact that environmental education re-search seems to primarily be seeking to fulfill a “cultural inno-vation role” in the wider education research landscape, carving out niches and spaces that speak to educational innova-tion/transformation and change. This may in part be due to its “youthfulness” within the more established and traditional edu-cation research landscape and trajectory, but also to its trans-formative intent. Environmental education researchers such as Stevenson (2007) continue to lament the “marginal” or “perma-nently peripheral” status of environmental education and envi-ronmental education research, noting that it is almost impossi-ble to situate effectively within modernist educational para-digms oriented mostly toward reproduction of existing cultures and practices, traditions which continue to characterize formal education institutional settings.
- Full Text:
- Date Issued: 2013
- Authors: Lotz-Sisitka, Heila , Fien, John , Ketlhoilwe, Mphemelang
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , book chapter
- Identifier: http://hdl.handle.net/10962/437323 , vital:73370 , ISBN 9780203813331 , https://www.taylorfrancis.com/chapters/edit/10.4324/9780203813331-26/traditions-new-niches-heila-lotz-sisitka-john-fien-mphemelang-ketlhoilwe
- Description: In this chapter we consider the traditions of environmental ed-ucation curriculum and learning research, their relationship to wider education research traditions, and point to new niches for curriculum and learning research, as opened up (in part) 1 through the contributions in this section of the IRHEE. The chapter points to the fact that environmental education re-search seems to primarily be seeking to fulfill a “cultural inno-vation role” in the wider education research landscape, carving out niches and spaces that speak to educational innova-tion/transformation and change. This may in part be due to its “youthfulness” within the more established and traditional edu-cation research landscape and trajectory, but also to its trans-formative intent. Environmental education researchers such as Stevenson (2007) continue to lament the “marginal” or “perma-nently peripheral” status of environmental education and envi-ronmental education research, noting that it is almost impossi-ble to situate effectively within modernist educational para-digms oriented mostly toward reproduction of existing cultures and practices, traditions which continue to characterize formal education institutional settings.
- Full Text:
- Date Issued: 2013
Transcribing the Venda tshikona reedpipe dance
- Tracey, Andrew, Gumboreshumba, Laina
- Authors: Tracey, Andrew , Gumboreshumba, Laina
- Date: 2013
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59744 , vital:27644 , http://dx.doi.org/10.21504/amj.v9i3.1909
- Description: Starting with the end result, the above transcription is the conclusion I came to after sitting with Laina Gumboreshumba for many hours, watching the videos she made during her recent doctoral research on the tshikona reedpipe dance of the Venda of Limpopo Province in the extreme north of South Africa. The transcription shown in Figure 2 is a skeleton version of the full pipe sound that contains all the information needed to grasp the structure of the sound and teach it or play it. There are always seven different pipes. A full tshikona group has far more than the seven pipes (nanga) shown, because all seven pipe numbers are doubled in every octave present in a group, so there may be up to four or more Pipe 1s, Pipe 2s, etc, of different sizes. All the Pipe 1s play the same pattern together, all the Pipe 2s etc. There are usually four octaves in all, with an incomplete octave of a few higher pitched pipes at the top (phalana). A popular size for a group according to group leaders (malogwane) is twenty eight pipes, which may include some pitch duplicates. A festive performance can number well over one hundred players. The music is heptatonic as you can see from the transcription, and hear for yourself from CD track 1 accompanying this issue of African Music. A chart showing the tuning is included as Figure 1 1 at the end of this article. This article does not address the pipe names; they are simply numbered Pipes 1 to 7, in the order of entry in Mr Netshivhale’s groups. The pipes are end-blown, closed tubes made of a special bamboo, or increasingly today of electrical or other tubing.
- Full Text:
- Date Issued: 2013
- Authors: Tracey, Andrew , Gumboreshumba, Laina
- Date: 2013
- Language: English
- Type: article , text
- Identifier: http://hdl.handle.net/10962/59744 , vital:27644 , http://dx.doi.org/10.21504/amj.v9i3.1909
- Description: Starting with the end result, the above transcription is the conclusion I came to after sitting with Laina Gumboreshumba for many hours, watching the videos she made during her recent doctoral research on the tshikona reedpipe dance of the Venda of Limpopo Province in the extreme north of South Africa. The transcription shown in Figure 2 is a skeleton version of the full pipe sound that contains all the information needed to grasp the structure of the sound and teach it or play it. There are always seven different pipes. A full tshikona group has far more than the seven pipes (nanga) shown, because all seven pipe numbers are doubled in every octave present in a group, so there may be up to four or more Pipe 1s, Pipe 2s, etc, of different sizes. All the Pipe 1s play the same pattern together, all the Pipe 2s etc. There are usually four octaves in all, with an incomplete octave of a few higher pitched pipes at the top (phalana). A popular size for a group according to group leaders (malogwane) is twenty eight pipes, which may include some pitch duplicates. A festive performance can number well over one hundred players. The music is heptatonic as you can see from the transcription, and hear for yourself from CD track 1 accompanying this issue of African Music. A chart showing the tuning is included as Figure 1 1 at the end of this article. This article does not address the pipe names; they are simply numbered Pipes 1 to 7, in the order of entry in Mr Netshivhale’s groups. The pipes are end-blown, closed tubes made of a special bamboo, or increasingly today of electrical or other tubing.
- Full Text:
- Date Issued: 2013
Transient analysis of erroneous tripping at grassridge static VAr compensator
- Authors: Taberer, Marcel Wayne
- Date: 2013
- Subjects: Transients (Electricity) , Electric transformers
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9603 , http://hdl.handle.net/10948/d1020918
- Description: The research work conducted and presented forward in this document is the evaluation of real time values obtained using three recording devices at two independent locations and implementing them as recorder devices in Eskom’s power system. The research work conducted was presented at an IEEE International Conference (ICIT2013) and Appendix A shows the accepted paper presented. A derived model within a simulation software package known as DIgSILENT PowerFactory is created and Electromagnetic Transient (EMT) studies are performed and then compared to the real time values obtained using the OMICRON CMC 356’s. Transformers are normally energised via a circuit breaker which is controlled by an auxiliary closing contact. By applying system voltage at a random instant in time on the transformer windings may result in a large transient magnetizing inrush current which causes high orders of 2nd harmonic currents to flow under no load conditions. A philosophy known to mitigate these currents is to energise the transformer by controlling each individual phase 120 degrees apart with the first pole closing at the peak on the voltage waveform. Transients produced due to 500MVA transformers been introduced into the power system at a certain space in time can cause nuisance tripping’s at the particular location where the respective transformer is energised. OMICRON EnerLyzer is the software tool used for the Comtrade recordings at both locations. Four independent case studies are generated within EnerLyzer software and the relevant Comtrade files are extracted for the four independent case studies relative to Transformer1 and Transformer2 switching’s. TOP software, which is a mathematical tool used to analyse Comtrade files, is then used to analyse and investigate the four case studies. Results from DIgSILENT PowerFactory are then generated according to the derived model. The results extracted depict three scenarios, indicating a power system that is weak, strong and specifically a power system that correlates to the actual tripping of a Static VAr Compensator (SVC). The results are all formulated and then evaluated in order to produce a conclusion and bring forward recommendations to Eskom in order to effectively ensure the Dedisa/Grassridge power system is reliable once again.
- Full Text:
- Date Issued: 2013
- Authors: Taberer, Marcel Wayne
- Date: 2013
- Subjects: Transients (Electricity) , Electric transformers
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9603 , http://hdl.handle.net/10948/d1020918
- Description: The research work conducted and presented forward in this document is the evaluation of real time values obtained using three recording devices at two independent locations and implementing them as recorder devices in Eskom’s power system. The research work conducted was presented at an IEEE International Conference (ICIT2013) and Appendix A shows the accepted paper presented. A derived model within a simulation software package known as DIgSILENT PowerFactory is created and Electromagnetic Transient (EMT) studies are performed and then compared to the real time values obtained using the OMICRON CMC 356’s. Transformers are normally energised via a circuit breaker which is controlled by an auxiliary closing contact. By applying system voltage at a random instant in time on the transformer windings may result in a large transient magnetizing inrush current which causes high orders of 2nd harmonic currents to flow under no load conditions. A philosophy known to mitigate these currents is to energise the transformer by controlling each individual phase 120 degrees apart with the first pole closing at the peak on the voltage waveform. Transients produced due to 500MVA transformers been introduced into the power system at a certain space in time can cause nuisance tripping’s at the particular location where the respective transformer is energised. OMICRON EnerLyzer is the software tool used for the Comtrade recordings at both locations. Four independent case studies are generated within EnerLyzer software and the relevant Comtrade files are extracted for the four independent case studies relative to Transformer1 and Transformer2 switching’s. TOP software, which is a mathematical tool used to analyse Comtrade files, is then used to analyse and investigate the four case studies. Results from DIgSILENT PowerFactory are then generated according to the derived model. The results extracted depict three scenarios, indicating a power system that is weak, strong and specifically a power system that correlates to the actual tripping of a Static VAr Compensator (SVC). The results are all formulated and then evaluated in order to produce a conclusion and bring forward recommendations to Eskom in order to effectively ensure the Dedisa/Grassridge power system is reliable once again.
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- Date Issued: 2013