Analysis of the security and reliability of packet transmission in Wireless Mesh Networks (WMNs) : a case study of Malicious Packet drop attack
- Adeniji, Victor Oluwatobiloba
- Authors: Adeniji, Victor Oluwatobiloba
- Date: 2018
- Subjects: Wireless communication systems Mobile communication systems
- Language: English
- Type: Thesis , Masters , Computer Science
- Identifier: http://hdl.handle.net/10353/17450 , vital:40969
- Description: Wireless Mesh Networks (WMNs) are known for possessing good attributes such as low up-front cost, easy network maintenance, and reliable service coverage. This has largely made them to be adopted in various areas such as; school campus networks, community networking, pervasive healthcare, office and home automation, emergency rescue operations and ubiquitous wireless networks. The routing nodes are equipped with self-organized and self-configuring capabilities. The routing mechanisms of WMNs depend on the collaboration of all participating nodes for reliable network performance. However, it has been noted that most routing algorithms proposed for WMNs in the last few years are designed with the assumption that all the participating nodes will collaboratively be involved in relaying the data packets originated from a source to a multi-hop destination. Such design approach exposes WMNs to vulnerability such as malicious packet drop attack. Therefore, it is imperative to design and implement secure and reliable packet routing mechanisms to mitigate this type of attack. While there are works that have attempted to implement secure routing approach, the findings in this research unearthed that further research works are required to improve the existing secure routing in order to provide more secure and reliable packet transmission in WMNs, in the event of denial of service (DoS) attacks such black hole malicious pack drop attack. This study further presents an analysis of the impact of the black hole malicious packet drop attack with other influential factors in WMNs. In the study, NS-3 simulator was used with AODV as the routing protocol. The results show that the packet delivery ratio and throughput of WMN under attack decreases sharply as compared to WMN free from attack.
- Full Text:
- Date Issued: 2018
- Authors: Adeniji, Victor Oluwatobiloba
- Date: 2018
- Subjects: Wireless communication systems Mobile communication systems
- Language: English
- Type: Thesis , Masters , Computer Science
- Identifier: http://hdl.handle.net/10353/17450 , vital:40969
- Description: Wireless Mesh Networks (WMNs) are known for possessing good attributes such as low up-front cost, easy network maintenance, and reliable service coverage. This has largely made them to be adopted in various areas such as; school campus networks, community networking, pervasive healthcare, office and home automation, emergency rescue operations and ubiquitous wireless networks. The routing nodes are equipped with self-organized and self-configuring capabilities. The routing mechanisms of WMNs depend on the collaboration of all participating nodes for reliable network performance. However, it has been noted that most routing algorithms proposed for WMNs in the last few years are designed with the assumption that all the participating nodes will collaboratively be involved in relaying the data packets originated from a source to a multi-hop destination. Such design approach exposes WMNs to vulnerability such as malicious packet drop attack. Therefore, it is imperative to design and implement secure and reliable packet routing mechanisms to mitigate this type of attack. While there are works that have attempted to implement secure routing approach, the findings in this research unearthed that further research works are required to improve the existing secure routing in order to provide more secure and reliable packet transmission in WMNs, in the event of denial of service (DoS) attacks such black hole malicious pack drop attack. This study further presents an analysis of the impact of the black hole malicious packet drop attack with other influential factors in WMNs. In the study, NS-3 simulator was used with AODV as the routing protocol. The results show that the packet delivery ratio and throughput of WMN under attack decreases sharply as compared to WMN free from attack.
- Full Text:
- Date Issued: 2018
Analysis of VAT compliance challenges in municipalities
- Authors: Nkonzombi, Linda
- Date: 2018
- Subjects: Value-added tax -- South Africa , Income tax -- South Africa Income tax -- Law and legislation -- South Africa Taxation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/33429 , vital:32864
- Description: The study was carried out to identify challenges that municipalities have with becoming Value Added Tax (‘VAT’) compliant. This study has been prompted by the ongoing findings reported by the Auditor General (‘AG’) in its audit reports. The increasing demand on the services of tax consultants also suggests that municipalities are having challenges in independently fulfilling their tax obligations. It was found that municipalities are often challenged with the application of the following VAT sections: The VAT apportionment methodology, section 8(27) dealing with unallocated payments, VAT reconciliations and claiming of VAT on invalid documentation and where VAT credits are denied. The main causes of non-compliance were identified as complexity of the tax laws, interpretation issues, behavioural attitude, lack of technical expertise within municipalities, and the fact that VAT is a self-assessed tax. Based on the findings of the study, it is recommended that all municipalities should be required to have a designated tax team to handle the tax matters of a municipality. The municipalities’ governing body, South African Local Government Association (‘SALGA’), should consider introducing penalties to non-VAT compliant municipalities. SARS should establish ‘customer relationships’ with the municipalities.
- Full Text:
- Date Issued: 2018
- Authors: Nkonzombi, Linda
- Date: 2018
- Subjects: Value-added tax -- South Africa , Income tax -- South Africa Income tax -- Law and legislation -- South Africa Taxation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/33429 , vital:32864
- Description: The study was carried out to identify challenges that municipalities have with becoming Value Added Tax (‘VAT’) compliant. This study has been prompted by the ongoing findings reported by the Auditor General (‘AG’) in its audit reports. The increasing demand on the services of tax consultants also suggests that municipalities are having challenges in independently fulfilling their tax obligations. It was found that municipalities are often challenged with the application of the following VAT sections: The VAT apportionment methodology, section 8(27) dealing with unallocated payments, VAT reconciliations and claiming of VAT on invalid documentation and where VAT credits are denied. The main causes of non-compliance were identified as complexity of the tax laws, interpretation issues, behavioural attitude, lack of technical expertise within municipalities, and the fact that VAT is a self-assessed tax. Based on the findings of the study, it is recommended that all municipalities should be required to have a designated tax team to handle the tax matters of a municipality. The municipalities’ governing body, South African Local Government Association (‘SALGA’), should consider introducing penalties to non-VAT compliant municipalities. SARS should establish ‘customer relationships’ with the municipalities.
- Full Text:
- Date Issued: 2018
Application of a quality by design approach to optimise an existing product
- Authors: Maxwell, Taryn Lee
- Date: 2018
- Subjects: Pharmaceutical chemistry , Drugs -- Design Pharmaceutical technology
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: http://hdl.handle.net/10948/32752 , vital:32341
- Description: Quality by design is a science and risk based approach whereby quality is built into the product or process during the pharmaceutical development. although quality by design is encouraged for pharmaceutical development. it is possible to apply quality by design to optimize an existing product as part of a continual improvement strategy. the purpose of this study is to determine which factors should be considered to justify the application of quality by design to optimize an existing product.
- Full Text: false
- Date Issued: 2018
- Authors: Maxwell, Taryn Lee
- Date: 2018
- Subjects: Pharmaceutical chemistry , Drugs -- Design Pharmaceutical technology
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: http://hdl.handle.net/10948/32752 , vital:32341
- Description: Quality by design is a science and risk based approach whereby quality is built into the product or process during the pharmaceutical development. although quality by design is encouraged for pharmaceutical development. it is possible to apply quality by design to optimize an existing product as part of a continual improvement strategy. the purpose of this study is to determine which factors should be considered to justify the application of quality by design to optimize an existing product.
- Full Text: false
- Date Issued: 2018
Application of hidden Markov models and their extensions to animal movement data
- Authors: Van Niekerk, Bracken
- Date: 2018
- Subjects: Markov processes Animal locomotion Time-series analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/23835 , vital:30624
- Description: Hidden Markov Models (HMMs) have become increasingly popular in animal movement studies as they provide a flexible modelling approach and take the correlation between successive observations into account. They can segment the movement paths into latent states, which can be considered as rough proxies for the behaviours of the animals. This study comprises of two sections, both involving the application of HMMs to large terrestrial mammal movement data. Usually step lengths representing the displacement distances between successive observations, turning angles measuring the tortuosity, or a bivariate input of both variables are used as inputs in the models. It has been found in the literature that the turning angle is either included in the modelling process or it is excluded without much justification for doing so. The first part of this study investigates the nfluence of the turning angle on the model output and resultant interpretations of the HMMs when modelling the trajectories of large terrestrial mammals in southern Africa. Results revealed at different time scales, and for both predator and herbivore species in this study, that the turning angle does not influence the state allocation of the HMMs, which is the main output in terms of interpreting the behaviours of the animals. It is thought in most cases that the inclusion of the turning angle overcomplicates the models unnecessarily without contributing any additional information in terms of the behavioural interpretations or improving the overall fit of the models. This was found for the variety of movements of the species under observation in this study. The second part of this study attempts to validate the state allocation of the HMMs fitted to eland trajectories in the Greater Addo Elephant National Park in the Eastern Cape, with the use of camera trap data. This presented a unique opportunity as this type of data is mainly used for abundance or capture-recapture studies, and the HMMs are rarely validated as the true behaviours of the animals are seldom known. Results revealed that the same diel patterns were detected by the HMMs that were shown by the classified camera trap data. Direct comparisons of the observations where the dates and times matched for the telemetry and camera trap data could be done in several rare instances, which revealed many similarities. Although it was not an ideal comparison, the camera trap data provided a rough validation of the state allocation of the HMMs used in the study.
- Full Text:
- Date Issued: 2018
- Authors: Van Niekerk, Bracken
- Date: 2018
- Subjects: Markov processes Animal locomotion Time-series analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/23835 , vital:30624
- Description: Hidden Markov Models (HMMs) have become increasingly popular in animal movement studies as they provide a flexible modelling approach and take the correlation between successive observations into account. They can segment the movement paths into latent states, which can be considered as rough proxies for the behaviours of the animals. This study comprises of two sections, both involving the application of HMMs to large terrestrial mammal movement data. Usually step lengths representing the displacement distances between successive observations, turning angles measuring the tortuosity, or a bivariate input of both variables are used as inputs in the models. It has been found in the literature that the turning angle is either included in the modelling process or it is excluded without much justification for doing so. The first part of this study investigates the nfluence of the turning angle on the model output and resultant interpretations of the HMMs when modelling the trajectories of large terrestrial mammals in southern Africa. Results revealed at different time scales, and for both predator and herbivore species in this study, that the turning angle does not influence the state allocation of the HMMs, which is the main output in terms of interpreting the behaviours of the animals. It is thought in most cases that the inclusion of the turning angle overcomplicates the models unnecessarily without contributing any additional information in terms of the behavioural interpretations or improving the overall fit of the models. This was found for the variety of movements of the species under observation in this study. The second part of this study attempts to validate the state allocation of the HMMs fitted to eland trajectories in the Greater Addo Elephant National Park in the Eastern Cape, with the use of camera trap data. This presented a unique opportunity as this type of data is mainly used for abundance or capture-recapture studies, and the HMMs are rarely validated as the true behaviours of the animals are seldom known. Results revealed that the same diel patterns were detected by the HMMs that were shown by the classified camera trap data. Direct comparisons of the observations where the dates and times matched for the telemetry and camera trap data could be done in several rare instances, which revealed many similarities. Although it was not an ideal comparison, the camera trap data provided a rough validation of the state allocation of the HMMs used in the study.
- Full Text:
- Date Issued: 2018
Aquatic habitat shift assessment in a groundwater-fed semi-arid stream: an investigation into the response of Karoo hydroecology to system variability
- Authors: Ellis, Natalie
- Date: 2018
- Subjects: Aquatic habitats -- South Africa -- Karoo , Arid regions -- South Africa -- Karoo , Biotic communities -- South Africa -- Karoo , Stream ecology -- South Africa -- Karoo
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/61882 , vital:28072
- Description: From introduction: The subject of biological response to changes in aquatic habitat is one which has been well explored in many regions of the world. Examples include work in south east Spain by Mellado Diaz et al. (2008) and Oliva-Paterna et al. (2003), in western United States of America by Hauer and Lorang (2004), and in West Germany by Meyer et al. (2003). Similarly, a number of studies have been conducted in semi-arid regions, exploring elements such as erosion, climate, lithology and landscape formations (e.g. Boardman et al., 2013; Le Maitre et al., 2007; Meyer et al., 2003). However, apart from the study by Uys (1997), and Uys and O’Keeffe (1997), there is a noticeable lack of literature on aquatic habitat shifts in semi-arid stream systems, despite these systems being recognised for their high natural variability. This study provides a base-level approach to conducting habitat shift assessments in a semi-arid stream system and monitoring the hydroecological responses to system variability.
- Full Text:
- Date Issued: 2018
- Authors: Ellis, Natalie
- Date: 2018
- Subjects: Aquatic habitats -- South Africa -- Karoo , Arid regions -- South Africa -- Karoo , Biotic communities -- South Africa -- Karoo , Stream ecology -- South Africa -- Karoo
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/61882 , vital:28072
- Description: From introduction: The subject of biological response to changes in aquatic habitat is one which has been well explored in many regions of the world. Examples include work in south east Spain by Mellado Diaz et al. (2008) and Oliva-Paterna et al. (2003), in western United States of America by Hauer and Lorang (2004), and in West Germany by Meyer et al. (2003). Similarly, a number of studies have been conducted in semi-arid regions, exploring elements such as erosion, climate, lithology and landscape formations (e.g. Boardman et al., 2013; Le Maitre et al., 2007; Meyer et al., 2003). However, apart from the study by Uys (1997), and Uys and O’Keeffe (1997), there is a noticeable lack of literature on aquatic habitat shifts in semi-arid stream systems, despite these systems being recognised for their high natural variability. This study provides a base-level approach to conducting habitat shift assessments in a semi-arid stream system and monitoring the hydroecological responses to system variability.
- Full Text:
- Date Issued: 2018
Archie Mafeje and the question of philosophy as a liberatory discourse
- Authors: Dladla, Thabang
- Date: 2018
- Subjects: Philosophy, African Eurocentrism Liberty
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10353/12160 , vital:39192
- Description: This dissertation seeks to articulate a liberatory conception of philosophy which interprets reality on its own terms. It is an attempt to intervene in the practice of philosophy in South Africa, which has continued along colonial lines expressed through the marginality of African philosophy up to the present, to the general neglect of the unjust and divisive social reality that defines South Africa. It is our argument that such a continuity is indicative of outstanding liberation on the part of the indigenous people conquered in the unjust wars of colonisation. Our main task then is to struggle for this liberation at the epistemic level with Archie Mafeje, through an examination of his intellectual works and life as a revolutionary intellectual, as an inspiration and an instance of a liberatory practice of philosophy. We draw on the work of Archie Mafeje to elaborate and defend his account of African Philosophy, as a historically specific expression of the liberatory struggle of Africans against unjust Euro-centric colonial domination. This shall be achieved in three instances. In the first instance, Chapter 1, we trace the history of institutionalised philosophy in South Africa outlining Eurocentrism and mimesis as its defining features. In the second instance, Chapter 2, a history of contemporary African philosophy is outlined as emanative from the question concerning the existence of African philosophy, of which mainstream South African philosophy has largely been ignorant. In the final instance, Chapter 3 and 4, a liberatory practice of philosophy is presented, as a necessary response to this context, with Mafeje’s account of African philosophy defended as such an instance. The birth of the Azanian Philosophical Society is also presented as such an instance and as a challenge to the unchallenged hegemony of white philosophy in South Africa.
- Full Text:
- Date Issued: 2018
- Authors: Dladla, Thabang
- Date: 2018
- Subjects: Philosophy, African Eurocentrism Liberty
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10353/12160 , vital:39192
- Description: This dissertation seeks to articulate a liberatory conception of philosophy which interprets reality on its own terms. It is an attempt to intervene in the practice of philosophy in South Africa, which has continued along colonial lines expressed through the marginality of African philosophy up to the present, to the general neglect of the unjust and divisive social reality that defines South Africa. It is our argument that such a continuity is indicative of outstanding liberation on the part of the indigenous people conquered in the unjust wars of colonisation. Our main task then is to struggle for this liberation at the epistemic level with Archie Mafeje, through an examination of his intellectual works and life as a revolutionary intellectual, as an inspiration and an instance of a liberatory practice of philosophy. We draw on the work of Archie Mafeje to elaborate and defend his account of African Philosophy, as a historically specific expression of the liberatory struggle of Africans against unjust Euro-centric colonial domination. This shall be achieved in three instances. In the first instance, Chapter 1, we trace the history of institutionalised philosophy in South Africa outlining Eurocentrism and mimesis as its defining features. In the second instance, Chapter 2, a history of contemporary African philosophy is outlined as emanative from the question concerning the existence of African philosophy, of which mainstream South African philosophy has largely been ignorant. In the final instance, Chapter 3 and 4, a liberatory practice of philosophy is presented, as a necessary response to this context, with Mafeje’s account of African philosophy defended as such an instance. The birth of the Azanian Philosophical Society is also presented as such an instance and as a challenge to the unchallenged hegemony of white philosophy in South Africa.
- Full Text:
- Date Issued: 2018
Artisanal mining and its contribution to sustainable rural livelihoods : a case of Esigodini area, Umzingwane rural district, Matabeleland South Province of Zimbabwe
- Authors: Nkala, Khayelihle
- Date: 2018
- Subjects: Mineral industries Rural poor Sustainable development
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/15551 , vital:40458
- Description: This study examined the contribution of artisanal mining to the livelihoods of rural communities. Artisanal mining has over the past decade been taken up by rural communities as an alternative of sustaining their livelihoods due to the collapse of agriculture due to the successive droughts, economic meltdown and the general failure of the fast track land reform program. Hence this study sought to fill this knowledge gap using Esigodini as a case. The study made use of focus group discussions, interviews and documents review to gather information on how artisanal mining activities have contributed to the livelihoods of rural communities. Although artisanal mining has its negative impacts to the environment it does contribute to the livelihoods of communities, as the findings of the study reveal that the Esigodini community has benefited from improved socio-economic activities as a result of the practice.
- Full Text:
- Date Issued: 2018
- Authors: Nkala, Khayelihle
- Date: 2018
- Subjects: Mineral industries Rural poor Sustainable development
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/15551 , vital:40458
- Description: This study examined the contribution of artisanal mining to the livelihoods of rural communities. Artisanal mining has over the past decade been taken up by rural communities as an alternative of sustaining their livelihoods due to the collapse of agriculture due to the successive droughts, economic meltdown and the general failure of the fast track land reform program. Hence this study sought to fill this knowledge gap using Esigodini as a case. The study made use of focus group discussions, interviews and documents review to gather information on how artisanal mining activities have contributed to the livelihoods of rural communities. Although artisanal mining has its negative impacts to the environment it does contribute to the livelihoods of communities, as the findings of the study reveal that the Esigodini community has benefited from improved socio-economic activities as a result of the practice.
- Full Text:
- Date Issued: 2018
Assessing factors influencing professional nurses' attrition in South Africa : a case study of private hospitals in Johannesburg
- Authors: Mbobo, Angelina Pretty
- Date: 2018
- Subjects: Intensive care nursing
- Language: English
- Type: Thesis , Masters , Public Health Leadership
- Identifier: http://hdl.handle.net/10353/11181 , vital:37200
- Description: South Africa faces an immense shortage of healthcare professionals, especially trained and experienced critical care nurses. This thesis assesses factors influencing professional nurses ‘attrition in two selected private hospitals. This results in an HR risk; loss of skills, task shifting and the use of less skilled nurses, and not limited to the high workloads in intensive care units together with the job dissatisfaction consequently. To confirm this, a case study making use of a qualitative approach, follows the definition of a social constructivism framework. The study assessed 40 trained and experienced critical care nurses in focus groups of 5, with which a stratified purposive sampling technique was used and the focus group interviews were 90 minutes Seven structured interviews were undertaken, (using a narrative summary) with hospital operational managers working directly with the critical care nurses. Audio-recorded data were analysed by thematic content analysis using Creswell’s steps content analysis method. Multiple reasons, as given by nurses, to discontinue their services in private hospitals emerged. These were: Heavy workloads, shortage of trained staff, medico-legal risks; lack of supervision, support and teamwork, physical and emotional exhaustion, fatigue, stress and burnout, differential salary scales, non-competitive retirement packages role ambiguity, inadequate equipment, unresolved conflict with colleagues or management, personal financial crisis, lack of recognition and Lack of career development or promotion. These factors make use of themes, which include issues related to line management, administration, subjective and uncertainty of roles. Operational managers confirmed such reasons for the discontinuation of services offered by critical care nurses in private hospitals. Management views to the attrition of critical care nurses were that: (a) The staffing crisis was a serious matter of concern, (b) the use of less skilled staff resulted in negative effects on patient care and (c) the low number of critical care nursing staff negatively affected organisational goals.
- Full Text:
- Date Issued: 2018
- Authors: Mbobo, Angelina Pretty
- Date: 2018
- Subjects: Intensive care nursing
- Language: English
- Type: Thesis , Masters , Public Health Leadership
- Identifier: http://hdl.handle.net/10353/11181 , vital:37200
- Description: South Africa faces an immense shortage of healthcare professionals, especially trained and experienced critical care nurses. This thesis assesses factors influencing professional nurses ‘attrition in two selected private hospitals. This results in an HR risk; loss of skills, task shifting and the use of less skilled nurses, and not limited to the high workloads in intensive care units together with the job dissatisfaction consequently. To confirm this, a case study making use of a qualitative approach, follows the definition of a social constructivism framework. The study assessed 40 trained and experienced critical care nurses in focus groups of 5, with which a stratified purposive sampling technique was used and the focus group interviews were 90 minutes Seven structured interviews were undertaken, (using a narrative summary) with hospital operational managers working directly with the critical care nurses. Audio-recorded data were analysed by thematic content analysis using Creswell’s steps content analysis method. Multiple reasons, as given by nurses, to discontinue their services in private hospitals emerged. These were: Heavy workloads, shortage of trained staff, medico-legal risks; lack of supervision, support and teamwork, physical and emotional exhaustion, fatigue, stress and burnout, differential salary scales, non-competitive retirement packages role ambiguity, inadequate equipment, unresolved conflict with colleagues or management, personal financial crisis, lack of recognition and Lack of career development or promotion. These factors make use of themes, which include issues related to line management, administration, subjective and uncertainty of roles. Operational managers confirmed such reasons for the discontinuation of services offered by critical care nurses in private hospitals. Management views to the attrition of critical care nurses were that: (a) The staffing crisis was a serious matter of concern, (b) the use of less skilled staff resulted in negative effects on patient care and (c) the low number of critical care nursing staff negatively affected organisational goals.
- Full Text:
- Date Issued: 2018
Assessing grade 9 learners' attitude towards their academic performance in mathematics in Pinetown education district, KwaZulu-Natal
- Authors: Olorunfemi, Sunday Olayinka
- Date: 2018
- Subjects: Mathematics -- Study and teaching (Secondary) -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/8518 , vital:32859
- Description: The world education system is faced with many challenges. Learners’ performance in mathematics in particular is one of the main areas of concern. Over decades, Mathematics has become an indispensable tool in the march towards technological breakthrough. The use of Mathematics reveals how people deal with their various private, social, and civil lives. The indispensable implications of Mathematics in the society made it to become a compulsory subject in the primary and secondary education in most countries of the world. Nevertheless, despite its wide application of Mathematics in the society, there are still many learners particularly in secondary schools who struggle to achieve the best knowledge of Mathematics. As applicable to most countries of the world, the performance of learner in South Africa is not encouraging. For example, the performance of Grade 9 learners, Pinetown Education District in particular, is not improving. Attitude is one major factor identified among learners that gravely affects learner’s performance in Mathematics. The study adopted qualitative approach which is rooted in interpretive paradigm to frame and focus the study. Interpretive paradigm is consistent with the assumption that experience of the world is subjective and best understood in terms of individuals’ subjective meanings rather than the researcher’s objective definitions. The sample included 15 participants (which include three Mathematics educators and twelve Grade nine learners) selected purposefully across three secondary schools, with attitudes and performance as inclusion criteria. Data were obtained through classroom observations and semi-structured interviews conducted with the selected Mathematics educators and learners of the selected schools to obtain their views on the impact of the attitudes of Grade nine learners on their performances in the subject. The study found that the learners perceived difficulty in Mathematics because of the information that was passed to them through their parents or guardians, seniors and peers who have negative attitudes towards Mathematics; their previous performances at early grades; the nature of Mathematics itself; and that learners were not well prepared from primary schools. It was also indicated that many learners have negative attitude towards Mathematics whose behaviours in the classroom affected others who would have loved to enjoy Mathematics. The study also revealed that all stakeholders (the educators, school managements, policy makers and parents) have part to play in motivating the learners to engage more in Mathematics. Also the study found that qualified educators who will develop good and friendly classroom environment, employing a highly interactive teaching method and as well giving adequate homework and assignments to the learners are needed to teach Mathematics in secondary schools. The study revealed that learning resources are not made available to the learners. There study therefore potentially provides that, educators can help mould the learners with negative preset mind about Mathematics through their classroom behaviours. The study further provides that learning materials such as textbooks and other geometry tools be made available for the learners use at home. The study also, provides that consideration be given to Mathematics class in the morning hours. The study concluded by giving general recommendations for improving learners’ participation and attitudes towards learning Mathematics.
- Full Text:
- Date Issued: 2018
- Authors: Olorunfemi, Sunday Olayinka
- Date: 2018
- Subjects: Mathematics -- Study and teaching (Secondary) -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/8518 , vital:32859
- Description: The world education system is faced with many challenges. Learners’ performance in mathematics in particular is one of the main areas of concern. Over decades, Mathematics has become an indispensable tool in the march towards technological breakthrough. The use of Mathematics reveals how people deal with their various private, social, and civil lives. The indispensable implications of Mathematics in the society made it to become a compulsory subject in the primary and secondary education in most countries of the world. Nevertheless, despite its wide application of Mathematics in the society, there are still many learners particularly in secondary schools who struggle to achieve the best knowledge of Mathematics. As applicable to most countries of the world, the performance of learner in South Africa is not encouraging. For example, the performance of Grade 9 learners, Pinetown Education District in particular, is not improving. Attitude is one major factor identified among learners that gravely affects learner’s performance in Mathematics. The study adopted qualitative approach which is rooted in interpretive paradigm to frame and focus the study. Interpretive paradigm is consistent with the assumption that experience of the world is subjective and best understood in terms of individuals’ subjective meanings rather than the researcher’s objective definitions. The sample included 15 participants (which include three Mathematics educators and twelve Grade nine learners) selected purposefully across three secondary schools, with attitudes and performance as inclusion criteria. Data were obtained through classroom observations and semi-structured interviews conducted with the selected Mathematics educators and learners of the selected schools to obtain their views on the impact of the attitudes of Grade nine learners on their performances in the subject. The study found that the learners perceived difficulty in Mathematics because of the information that was passed to them through their parents or guardians, seniors and peers who have negative attitudes towards Mathematics; their previous performances at early grades; the nature of Mathematics itself; and that learners were not well prepared from primary schools. It was also indicated that many learners have negative attitude towards Mathematics whose behaviours in the classroom affected others who would have loved to enjoy Mathematics. The study also revealed that all stakeholders (the educators, school managements, policy makers and parents) have part to play in motivating the learners to engage more in Mathematics. Also the study found that qualified educators who will develop good and friendly classroom environment, employing a highly interactive teaching method and as well giving adequate homework and assignments to the learners are needed to teach Mathematics in secondary schools. The study revealed that learning resources are not made available to the learners. There study therefore potentially provides that, educators can help mould the learners with negative preset mind about Mathematics through their classroom behaviours. The study further provides that learning materials such as textbooks and other geometry tools be made available for the learners use at home. The study also, provides that consideration be given to Mathematics class in the morning hours. The study concluded by giving general recommendations for improving learners’ participation and attitudes towards learning Mathematics.
- Full Text:
- Date Issued: 2018
Assessing growth response patterns of microalgae to varying environmental conditions using sediments from ephemeral wetlands
- Authors: Mazwane, Sixolile
- Date: 2018
- Subjects: Microalgae -- South Africa , Wetland conservation -- South Africa Landscape ecology -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/22398 , vital:29966
- Description: Ephemeral wetlands serve as habitats for different fauna and flora. Microalgae make up a bulk of primary production in newly inundated wetlands and have a big influence on the aquatic community structure. As ephemeral wetlands have cyclical drying and wetting phases, algal species found in these habitats have evolved adaptations (i.e. dormancy and cysts) to survive during dry periods and become productive upon inundation. Algae have been used as ecological indicators in many aquatic ecosystems including wetlands, particularly associated with water quality and with varying inundation states. Whilst temperature and water level have been shown to affect microalgal biomass independently, this study aims to assess the effects of these two factors simultaneously on microalgal biomass, species diversity and community changes. The aim of the study was to investigate microalgal dynamics using two ephemeral wetlands in the Nelson Mandela Bay Municipality. The growth response patterns of microalgal communities to varying temperatures and inundation levels through experiments using dry temporary wetland sediments was also assessed. Dry sediments were collected from two depression wetlands with different sediment characteristics (1592 and Elephant Wallow (EW)). The study consisted of replicated treatments with three different surface area: volume ratios (SA:V) (Low surface area: volume (LSAV), Medium (MSAV) and High (HSAV)), inundated with distilled water. The microcosms were placed inside a Conviron environmental growth chamber and illuminated at between 106 to 138 μmol.m-2s-1, with a 12:12 light-dark cycle at constant temperatures of 12 °C (mean winter) and 22 °C (mean summer). Physicochemical data were recorded, and biological samples were collected every 4 days over a 28-day inundation period. In the field, Electrical conductivity (EC) and pH showed a gradual increase over the inundation period. The systems were well oxygenated (6-10 mg L-1). Overall, phytoplankton biomass in the field was ~10 μg L-1 whereas benthic biomass (MPB) was significantly higher 10 – 300 mg L-1. Within the experiments, the phytoplankton biomass showed a pattern while MPB biomass increased gradually for both experiments. There were no significant (p>0.05) differences between the 1592 and EW phytoplankton biomass. However, the MPB biomass showed significant (p<0.05) differences between the two sediments (EW high, 1592 low) and the experiments, respectively. In the winter experiment, the 1592 sediment had high phytoplankton biomass compared to EW, the reverse was observed for the MPB biomass. In summer experiment, similar results were observed in terms of phytoplankton biomass. For the MPBs, 1592 had greater biomass for all treatments compared to EW. The phytoplankton community for both field samples and experiments was dominated by chlorophytes (>50 %), followed by cyanophytes and euglenophytes (with cryptophytes in summer experiment) for both field and experiments. The MPB community was dominated by bacillariophytes (55 %) and chlorophytes (25 %) in the 1592 sediments and this was also the case with EW sediments bacillariophytes (70 %), although cyanophytes (15 %) made up the remainder of the MPB community. The 1592 sediments supported higher diatom abundances under the HSAV compared to the same treatment from the EW wetland suggesting that possibly grain size or texture might be responsible. In contrast, sediments from EW under LSAV conditions showed higher diatom cell numbers possibly indicating that increased water depth has the propensity to support greater diatom assemblages compared with the same water level for sediments from 1592. The results indicate that microalgae community is influenced by sediment type more than it is by water level. From this study it was also established that microalgae were able to reemerge from their dormancy state upon inundation and that tank experiments were successful in simulating natural ephemeral wetland conditions. The findings from this study will add to the available baseline data on microalgal dynamics in the ephemeral wetlands in South Africa, especially in semi-arid areas. This information can be valuable in enhancing our understanding regarding the role of microalgae in ephemeral wetlands in order to conserve them.
- Full Text:
- Date Issued: 2018
- Authors: Mazwane, Sixolile
- Date: 2018
- Subjects: Microalgae -- South Africa , Wetland conservation -- South Africa Landscape ecology -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/22398 , vital:29966
- Description: Ephemeral wetlands serve as habitats for different fauna and flora. Microalgae make up a bulk of primary production in newly inundated wetlands and have a big influence on the aquatic community structure. As ephemeral wetlands have cyclical drying and wetting phases, algal species found in these habitats have evolved adaptations (i.e. dormancy and cysts) to survive during dry periods and become productive upon inundation. Algae have been used as ecological indicators in many aquatic ecosystems including wetlands, particularly associated with water quality and with varying inundation states. Whilst temperature and water level have been shown to affect microalgal biomass independently, this study aims to assess the effects of these two factors simultaneously on microalgal biomass, species diversity and community changes. The aim of the study was to investigate microalgal dynamics using two ephemeral wetlands in the Nelson Mandela Bay Municipality. The growth response patterns of microalgal communities to varying temperatures and inundation levels through experiments using dry temporary wetland sediments was also assessed. Dry sediments were collected from two depression wetlands with different sediment characteristics (1592 and Elephant Wallow (EW)). The study consisted of replicated treatments with three different surface area: volume ratios (SA:V) (Low surface area: volume (LSAV), Medium (MSAV) and High (HSAV)), inundated with distilled water. The microcosms were placed inside a Conviron environmental growth chamber and illuminated at between 106 to 138 μmol.m-2s-1, with a 12:12 light-dark cycle at constant temperatures of 12 °C (mean winter) and 22 °C (mean summer). Physicochemical data were recorded, and biological samples were collected every 4 days over a 28-day inundation period. In the field, Electrical conductivity (EC) and pH showed a gradual increase over the inundation period. The systems were well oxygenated (6-10 mg L-1). Overall, phytoplankton biomass in the field was ~10 μg L-1 whereas benthic biomass (MPB) was significantly higher 10 – 300 mg L-1. Within the experiments, the phytoplankton biomass showed a pattern while MPB biomass increased gradually for both experiments. There were no significant (p>0.05) differences between the 1592 and EW phytoplankton biomass. However, the MPB biomass showed significant (p<0.05) differences between the two sediments (EW high, 1592 low) and the experiments, respectively. In the winter experiment, the 1592 sediment had high phytoplankton biomass compared to EW, the reverse was observed for the MPB biomass. In summer experiment, similar results were observed in terms of phytoplankton biomass. For the MPBs, 1592 had greater biomass for all treatments compared to EW. The phytoplankton community for both field samples and experiments was dominated by chlorophytes (>50 %), followed by cyanophytes and euglenophytes (with cryptophytes in summer experiment) for both field and experiments. The MPB community was dominated by bacillariophytes (55 %) and chlorophytes (25 %) in the 1592 sediments and this was also the case with EW sediments bacillariophytes (70 %), although cyanophytes (15 %) made up the remainder of the MPB community. The 1592 sediments supported higher diatom abundances under the HSAV compared to the same treatment from the EW wetland suggesting that possibly grain size or texture might be responsible. In contrast, sediments from EW under LSAV conditions showed higher diatom cell numbers possibly indicating that increased water depth has the propensity to support greater diatom assemblages compared with the same water level for sediments from 1592. The results indicate that microalgae community is influenced by sediment type more than it is by water level. From this study it was also established that microalgae were able to reemerge from their dormancy state upon inundation and that tank experiments were successful in simulating natural ephemeral wetland conditions. The findings from this study will add to the available baseline data on microalgal dynamics in the ephemeral wetlands in South Africa, especially in semi-arid areas. This information can be valuable in enhancing our understanding regarding the role of microalgae in ephemeral wetlands in order to conserve them.
- Full Text:
- Date Issued: 2018
Assessing process safety action in selected South African oil companies
- Mashiloane, Mosebetsi Stanley
- Authors: Mashiloane, Mosebetsi Stanley
- Date: 2018
- Subjects: Industrial safety -- South Africa -- Management , Manufacturing processes -- South Africa -- Safety measures Petroleum industry and trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/22596 , vital:30017
- Description: The study was triggered by the number of process safety incidents that are taking place in South African oil companies. The impact of these process safety incidents has resulted in multiple fatalities, revenue loss, fires and explosions in the past. The problem is so immense that the process safety actions, coming from the process safety studies to prevent and mitigate these incidents have been ignored, not attended to, not implemented or not understood by the oil industries for the past 15-20 years. Hence the process safety incidents are still happening and the oil industry has not learnt from previous incidents.
- Full Text:
- Date Issued: 2018
- Authors: Mashiloane, Mosebetsi Stanley
- Date: 2018
- Subjects: Industrial safety -- South Africa -- Management , Manufacturing processes -- South Africa -- Safety measures Petroleum industry and trade -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/22596 , vital:30017
- Description: The study was triggered by the number of process safety incidents that are taking place in South African oil companies. The impact of these process safety incidents has resulted in multiple fatalities, revenue loss, fires and explosions in the past. The problem is so immense that the process safety actions, coming from the process safety studies to prevent and mitigate these incidents have been ignored, not attended to, not implemented or not understood by the oil industries for the past 15-20 years. Hence the process safety incidents are still happening and the oil industry has not learnt from previous incidents.
- Full Text:
- Date Issued: 2018
Assessing teaching strategies of grade four English second language teachers in Amathole District, Eastern Cape Province, South Africa
- Authors: Adegoriolu, Emmanuel Tobi
- Date: 2018
- Subjects: Education--South Africa English language--Study and teaching--Foreign speakers Second language acquisition
- Language: English
- Type: Thesis , Masters , Applied Linguistics
- Identifier: http://hdl.handle.net/10353/15474 , vital:40411
- Description: The intention of this study was to assess the teaching strategies of Grade 4 English second language teachers in the Amathole district of the Eastern Cape. The objectives of the study were firstly, to identify the teaching strategies currently employed by Grade 4 teachers in the teaching of English as a second language in selected schools in Amathole district of the Eastern Cape in South Africa. Secondly, the study sought to establish how the existing teaching strategies impacted on the performance of the learners of English as a second language in the selected schools in Amathloe district of the Eastern Cape, and to establish the teachers‟ perceptions on the most effective teaching strategies in the selected schools. The study used translanguaging and communicative language teaching as the theoretical lens and guide in data collection and analysis. The study employed the use of mixed methods of both quantitative and qualitative research design. Data was collected through the use of eight comprehensive classroom observations and eight teacher questionnaires in four different primary schools. The conclusion of the study as established in the outcome of data showed that there was no recommended teaching strategy by the Department of Education for English second language teachers teaching Grade 4. The study observed that the language teachers made use of various teaching strategies in the instruction of Grade 4 learners. In addition, it was concluded that the placement of the English language subject on the timetable affected the performance of young learners during the summer period. Moreover, the absence of teacher-learner cordial relationship compromised learning outcomes and performance of Grade 4 learners in the skills of English second language. The study recommends that teachers of English as a second language be trained on communicative language teaching in order to achieve positive outcomes in the classroom.
- Full Text:
- Date Issued: 2018
- Authors: Adegoriolu, Emmanuel Tobi
- Date: 2018
- Subjects: Education--South Africa English language--Study and teaching--Foreign speakers Second language acquisition
- Language: English
- Type: Thesis , Masters , Applied Linguistics
- Identifier: http://hdl.handle.net/10353/15474 , vital:40411
- Description: The intention of this study was to assess the teaching strategies of Grade 4 English second language teachers in the Amathole district of the Eastern Cape. The objectives of the study were firstly, to identify the teaching strategies currently employed by Grade 4 teachers in the teaching of English as a second language in selected schools in Amathole district of the Eastern Cape in South Africa. Secondly, the study sought to establish how the existing teaching strategies impacted on the performance of the learners of English as a second language in the selected schools in Amathloe district of the Eastern Cape, and to establish the teachers‟ perceptions on the most effective teaching strategies in the selected schools. The study used translanguaging and communicative language teaching as the theoretical lens and guide in data collection and analysis. The study employed the use of mixed methods of both quantitative and qualitative research design. Data was collected through the use of eight comprehensive classroom observations and eight teacher questionnaires in four different primary schools. The conclusion of the study as established in the outcome of data showed that there was no recommended teaching strategy by the Department of Education for English second language teachers teaching Grade 4. The study observed that the language teachers made use of various teaching strategies in the instruction of Grade 4 learners. In addition, it was concluded that the placement of the English language subject on the timetable affected the performance of young learners during the summer period. Moreover, the absence of teacher-learner cordial relationship compromised learning outcomes and performance of Grade 4 learners in the skills of English second language. The study recommends that teachers of English as a second language be trained on communicative language teaching in order to achieve positive outcomes in the classroom.
- Full Text:
- Date Issued: 2018
Assessing the impact of the Employment Equity Act on the employee satisfaction in the manufacturing sector
- Authors: Gina, Mondli
- Date: 2018
- Subjects: Job satisfaction -- South Africa , Employee motivation -- South Africa Labor laws and legislation -- South Africa South Africa -- Employment Equity Act, 1998 , Manufacturing industries -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/30150 , vital:30845
- Description: It has been observed that the workplace environment affects the performance and job satisfaction of employees. Employees are more than the most important asset for an organisation, they play an essential role in current operational performance and future competitive advantage. Employees spend a major part of their life in the organisation within which they work. Managing the diversity of human capital in an organisations is key towards organisational sustainability in the manufacturing sector. The main objective of this study was to determine the degree of employees’ job satisfaction towards the implementation of Employment Equity Act in the manufacturing sector. One of the most important and broad-based challenges currently facing organisations in various sectors is adapting to people who are different. The term used for describing this challenge is workforce diversity. Workforce diversity means that organisations are becoming a more heterogeneous mix of people in terms gender, age, race, ethnicity, and sexual orientation. The main aim of the Employment Equity Act is the creation of a diverse workforce within South African organisations. If the organisation wants to remain competitive in the environment that its operating, it requires an effective management of diversity. The South African manufacturing sector is facing a major challenge regarding the attainment of workforce diversity in terms of implementing Employment Equity Act legislation, hence this study was an exploratory field study with the aim of understanding what impact the implementation of Employment Equity has on the employee job satisfaction in manufacturing sector. The study further investigated whether variables such as, workplace diversity, organisation culture, change management, leadership style and employee engagement do affect employee job satisfaction. A detailed questionnaire was distributed to a convenience sample of employees who are working in the manufacturing organisations. The data collected from this study was analysed by the statistician consultant provided by the Nelson Mandela University. In this iv study, the collected data was analysed using the latest Statistical Package for the Social Sciences (SPSS) which reflects the data as graphical representations. The results of the study revealed that over 60% of organisations in the manufacturing sector, and represented in the study are creating a ‘great place to work’ and their employees are satisfied with their jobs. Although, overall results of the study illustrate that employees in the manufacturing sector are satisfied with their organisations and which results in job satisfaction, an interesting finding was discovered in the study and which might have implications for manufacturing organisations in the way change management processes are carried out. The study findings revealed that the level of involvement as perceived by respondents was limited to adequate information and not necessarily total participation in the decision process. The study recommends that change management processes should include the participation of all employees in the organisation. Conclusions and recommendations were drawn from the literature and the findings of the study.
- Full Text:
- Date Issued: 2018
- Authors: Gina, Mondli
- Date: 2018
- Subjects: Job satisfaction -- South Africa , Employee motivation -- South Africa Labor laws and legislation -- South Africa South Africa -- Employment Equity Act, 1998 , Manufacturing industries -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/30150 , vital:30845
- Description: It has been observed that the workplace environment affects the performance and job satisfaction of employees. Employees are more than the most important asset for an organisation, they play an essential role in current operational performance and future competitive advantage. Employees spend a major part of their life in the organisation within which they work. Managing the diversity of human capital in an organisations is key towards organisational sustainability in the manufacturing sector. The main objective of this study was to determine the degree of employees’ job satisfaction towards the implementation of Employment Equity Act in the manufacturing sector. One of the most important and broad-based challenges currently facing organisations in various sectors is adapting to people who are different. The term used for describing this challenge is workforce diversity. Workforce diversity means that organisations are becoming a more heterogeneous mix of people in terms gender, age, race, ethnicity, and sexual orientation. The main aim of the Employment Equity Act is the creation of a diverse workforce within South African organisations. If the organisation wants to remain competitive in the environment that its operating, it requires an effective management of diversity. The South African manufacturing sector is facing a major challenge regarding the attainment of workforce diversity in terms of implementing Employment Equity Act legislation, hence this study was an exploratory field study with the aim of understanding what impact the implementation of Employment Equity has on the employee job satisfaction in manufacturing sector. The study further investigated whether variables such as, workplace diversity, organisation culture, change management, leadership style and employee engagement do affect employee job satisfaction. A detailed questionnaire was distributed to a convenience sample of employees who are working in the manufacturing organisations. The data collected from this study was analysed by the statistician consultant provided by the Nelson Mandela University. In this iv study, the collected data was analysed using the latest Statistical Package for the Social Sciences (SPSS) which reflects the data as graphical representations. The results of the study revealed that over 60% of organisations in the manufacturing sector, and represented in the study are creating a ‘great place to work’ and their employees are satisfied with their jobs. Although, overall results of the study illustrate that employees in the manufacturing sector are satisfied with their organisations and which results in job satisfaction, an interesting finding was discovered in the study and which might have implications for manufacturing organisations in the way change management processes are carried out. The study findings revealed that the level of involvement as perceived by respondents was limited to adequate information and not necessarily total participation in the decision process. The study recommends that change management processes should include the participation of all employees in the organisation. Conclusions and recommendations were drawn from the literature and the findings of the study.
- Full Text:
- Date Issued: 2018
Assessing the implementation and effects of the Fetsa Tlala Food Initiative Programme in achieving its vision of eradicating household level food insecurity in Lukhanji Local Municipality, Eastern Cape Province, South Africa
- Authors: Njara, L I
- Date: 2018
- Subjects: Poverty -- South Africa -- Eastern Cape Food security -- South Africa -- Eastern Cape Households -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10476 , vital:35484
- Description: Declining agrarian activities in significant parts of the country, even in the subsistence sector, has meant that access to food is increasingly a function of household cash income, hence low-income households experience inadequate access to food. Over 12 million people in South Africa are vulnerable to food insecurity. Since 2013, substantial efforts and large sums of money have been devoted to poverty reduction through government’s Fetsa Tlala Food Production Initiative. Fetsa Tlala was conceptualised as an integrated government framework that seeks to promote food and nutrition security and to address the structural causes of food insecurity, which continue to perpetuate inequality and social exclusion. The main objective of this study is to assess the implementation and effects of Fetsa Tlala. The specific objectives include: to measure the direct and indirect benefits of Fetsa Tlala; to assess the cost-effectiveness of the programme; to evaluate the model of the programme using a social systems approach; and to assess the implementation approach of Fetsa Tlala. A cross-sectional study was carried on a sample of 70 households and four Fetsa Tlala projects in the Eastern Cape. Households were selected using the simple random sampling procedure. Structured and semi-structured interviews using questionnaires were conducted. The research objectives were analysed using both qualitative and quantitative approaches. Among the quantitative approaches used was a micro simulation exercise, which was performed to help understand the cost-effectiveness of the programme. The results show that the business model of the programme is not built with sustainability in mind and the systems approach was ignored when designing the programme. Furthermore, the cost of the programme outweighs its benefits. This study recommends that the programme should take into account human development and build a needs-based approach going forward. Further recommendations are that the government should target relevant partners, and prioritise agricultural insurance, infrastructure and agro-processing.
- Full Text:
- Date Issued: 2018
- Authors: Njara, L I
- Date: 2018
- Subjects: Poverty -- South Africa -- Eastern Cape Food security -- South Africa -- Eastern Cape Households -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10476 , vital:35484
- Description: Declining agrarian activities in significant parts of the country, even in the subsistence sector, has meant that access to food is increasingly a function of household cash income, hence low-income households experience inadequate access to food. Over 12 million people in South Africa are vulnerable to food insecurity. Since 2013, substantial efforts and large sums of money have been devoted to poverty reduction through government’s Fetsa Tlala Food Production Initiative. Fetsa Tlala was conceptualised as an integrated government framework that seeks to promote food and nutrition security and to address the structural causes of food insecurity, which continue to perpetuate inequality and social exclusion. The main objective of this study is to assess the implementation and effects of Fetsa Tlala. The specific objectives include: to measure the direct and indirect benefits of Fetsa Tlala; to assess the cost-effectiveness of the programme; to evaluate the model of the programme using a social systems approach; and to assess the implementation approach of Fetsa Tlala. A cross-sectional study was carried on a sample of 70 households and four Fetsa Tlala projects in the Eastern Cape. Households were selected using the simple random sampling procedure. Structured and semi-structured interviews using questionnaires were conducted. The research objectives were analysed using both qualitative and quantitative approaches. Among the quantitative approaches used was a micro simulation exercise, which was performed to help understand the cost-effectiveness of the programme. The results show that the business model of the programme is not built with sustainability in mind and the systems approach was ignored when designing the programme. Furthermore, the cost of the programme outweighs its benefits. This study recommends that the programme should take into account human development and build a needs-based approach going forward. Further recommendations are that the government should target relevant partners, and prioritise agricultural insurance, infrastructure and agro-processing.
- Full Text:
- Date Issued: 2018
Assessing the income derived from agricultural hawking in Buffalo City Metropolitan Municipality, Eastern Cape, South Africa
- Authors: Seteni, Vuyo
- Date: 2018
- Subjects: Street vendors -- South Africa -- Eastern Cape Street vendors -- South Africa -- Eastern Cape -- Economic conditions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10167 , vital:35364
- Description: The hawking business has grown profusely in Buffalo City Metropolitan Municipality, to such an extent that street hawkers are found on every street corner of the Metro. The literature suggests that street hawking holds great potential for employment creation for the unskilled population who cannot find employment opportunities in the formal sector. In light of the proliferation of street hawking in BCMM, the study aimed at assessing the performance of agricultural hawkers in the municipality by means of looking at hawkers’ strategies, determining their sales and net income, and ascertaining their level of ‘job satisfaction’. The sample was selected from the population of hawkers in three major towns of BCMM, namely Mdantsane, East London and King William’s Town. A sum of 200 respondents were selected in the study through interval based probability sampling. The study made use of a cross tabulation of the hawkers’ income according to the three main towns. The results revealed that that agricultural hawking contributes to poverty alleviation in Buffalo City Metropolitan Municipality, as the majority of hawkers earn enough to live above the poverty line. A correlation matrix was used to ascertain the strength and direction of association between hawkers’ monthly income and selected independent variables. The study also used an ordered probit model to determine which specific variables affect hawkers’ monthly income generated from fruit and vegetable sales. The results from the model suggest that business training is significantly and positively related to increasing monthly income, as are age, years of experience, and membership of a hawkers’ association. The study recommends that Buffalo City Metropolitan Municipality build new markets and improve the infrastructure of existing markets, and also provide proper sanitation and clean water to avoid unhygienic situations in street hawkers’ markets.
- Full Text:
- Date Issued: 2018
- Authors: Seteni, Vuyo
- Date: 2018
- Subjects: Street vendors -- South Africa -- Eastern Cape Street vendors -- South Africa -- Eastern Cape -- Economic conditions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10167 , vital:35364
- Description: The hawking business has grown profusely in Buffalo City Metropolitan Municipality, to such an extent that street hawkers are found on every street corner of the Metro. The literature suggests that street hawking holds great potential for employment creation for the unskilled population who cannot find employment opportunities in the formal sector. In light of the proliferation of street hawking in BCMM, the study aimed at assessing the performance of agricultural hawkers in the municipality by means of looking at hawkers’ strategies, determining their sales and net income, and ascertaining their level of ‘job satisfaction’. The sample was selected from the population of hawkers in three major towns of BCMM, namely Mdantsane, East London and King William’s Town. A sum of 200 respondents were selected in the study through interval based probability sampling. The study made use of a cross tabulation of the hawkers’ income according to the three main towns. The results revealed that that agricultural hawking contributes to poverty alleviation in Buffalo City Metropolitan Municipality, as the majority of hawkers earn enough to live above the poverty line. A correlation matrix was used to ascertain the strength and direction of association between hawkers’ monthly income and selected independent variables. The study also used an ordered probit model to determine which specific variables affect hawkers’ monthly income generated from fruit and vegetable sales. The results from the model suggest that business training is significantly and positively related to increasing monthly income, as are age, years of experience, and membership of a hawkers’ association. The study recommends that Buffalo City Metropolitan Municipality build new markets and improve the infrastructure of existing markets, and also provide proper sanitation and clean water to avoid unhygienic situations in street hawkers’ markets.
- Full Text:
- Date Issued: 2018
Assessing the perceptions of academic staff towards an academic staff development programme in a selected university in the Eastern Cape province
- Authors: Mankayi, Mandisa
- Date: 2018
- Subjects: College teachers -- In-service training -- South Africa -- Eastern Cape Education, Higher -- South Africa -- Eastern Cape Universities and colleges -- Employees -- Training of. -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/8530 , vital:32869
- Description: Institutions of higher education offer diverse staff development programmes to all staff members as a means of improving their educational quality and standards. The current study investigated using interviews, if whether the academic staff perceived staff development as a means of skills development; what factors motivated academic staff to attend the skills development programmes offered by their organisation; and which staff development programmes are perceived to be contributing much to academic skills development in a selected university in the Eastern Cape Province in South Africa. Utilising a purposive sampling technique, the number of academic staff interviewed was 15 from five faculties. A structured interview guide was used to solicit responses from the selected participants. Questions in the interview schedule ranged from issues pertaining to their registration on the skills development programme and how their personal skills have improved due to the programme. Upon completing the interview with an audio recorder, it was then transcribed and a thematic analysis method was used. It was found that participants were not satisfied with the academic skills development programmes offered by the university. While most respondents seemed to be aware of the skills programme, many were adamant to provide conclusive evidence on the impact of the programmes. The major disjoint among the participants rested on the performance tools used by the university to promote staff, which was mainly based on research output. This view meant that teaching and learning were not recognized as a tool that can be used to improve staff skills development, and as such, the perception was that there was bias in the education system in terms of rewarding employees who participate in certain programmes. The majority of the participants stated that they do apply what they learn to their teaching approaches, although they felt they were not rewarded by the education system as a whole. The major implication coming from this study is that the duality of the education system in South Africa makes it harder to achieve an equilibrium were both academic staffs practicing teaching and learning, and researchers are seen as equals.
- Full Text:
- Date Issued: 2018
- Authors: Mankayi, Mandisa
- Date: 2018
- Subjects: College teachers -- In-service training -- South Africa -- Eastern Cape Education, Higher -- South Africa -- Eastern Cape Universities and colleges -- Employees -- Training of. -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/8530 , vital:32869
- Description: Institutions of higher education offer diverse staff development programmes to all staff members as a means of improving their educational quality and standards. The current study investigated using interviews, if whether the academic staff perceived staff development as a means of skills development; what factors motivated academic staff to attend the skills development programmes offered by their organisation; and which staff development programmes are perceived to be contributing much to academic skills development in a selected university in the Eastern Cape Province in South Africa. Utilising a purposive sampling technique, the number of academic staff interviewed was 15 from five faculties. A structured interview guide was used to solicit responses from the selected participants. Questions in the interview schedule ranged from issues pertaining to their registration on the skills development programme and how their personal skills have improved due to the programme. Upon completing the interview with an audio recorder, it was then transcribed and a thematic analysis method was used. It was found that participants were not satisfied with the academic skills development programmes offered by the university. While most respondents seemed to be aware of the skills programme, many were adamant to provide conclusive evidence on the impact of the programmes. The major disjoint among the participants rested on the performance tools used by the university to promote staff, which was mainly based on research output. This view meant that teaching and learning were not recognized as a tool that can be used to improve staff skills development, and as such, the perception was that there was bias in the education system in terms of rewarding employees who participate in certain programmes. The majority of the participants stated that they do apply what they learn to their teaching approaches, although they felt they were not rewarded by the education system as a whole. The major implication coming from this study is that the duality of the education system in South Africa makes it harder to achieve an equilibrium were both academic staffs practicing teaching and learning, and researchers are seen as equals.
- Full Text:
- Date Issued: 2018
Assessment of indigenous forest degradation and deforestation along the wild coast, near Port St John’s, Eastern Cape Province, South Africa
- Katende, Lukyamuzi Lucky Fulgentius
- Authors: Katende, Lukyamuzi Lucky Fulgentius
- Date: 2018
- Subjects: Deforestation -- South Africa -- Eastern Cape , Forest degradation -- South Africa -- Eastern Cape Forest management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/30649 , vital:31006
- Description: Indigenous forests along the Wild Coast of the Eastern Cape Province have experienced both degradation and deforestation over the past decades. In early 2000, steps were taken to rehabilitate some of the degraded areas. Nevertheless, there is no monitoring mechanism in place, so little is known about the extent of degradation and impact of the rehabilitation efforts. The present study assesses the extent to which deforestation and degradation of the indigenous forests have occurred, and evaluates rehabilitation efforts in the study area around Port Saint John’s. Forest degradation was defined as the decrease in forest cover density while deforestation was defined as an increase in the trend of light forests and/ or a decrease in dense forests. The details for this study were obtained from multi – temporal remotely sensed data for a period between 1982 and 2013 (31 years). Multi-temporal Landsat satellite imagery for 1982, 1986, 1989, 2002, 2009 and 2013 was acquired and analysed. On the basis of prior knowledge of the area, the supervised classification approach was used. The Maximum likelihood supervised classification technique was used to extract information from satellite data. The classified images were filtered using a majority filtering procedure to reduce noise. Google Earth (Astrium) ancillary images were used to refine the classification based on expert rules. The derived changes in the degraded and rehabilitated areas were further validated through field visits. The overall image classification accuracy generated from Landsat image data ranged from 80% to 90%. It was noted that the area of dense forest almost doubled between 1986 and 1989, coinciding with a 59% decrease in the light forest. Subsequently, dense forests increased by 14,820 ha while light forests decreased by 16,690 ha between 1989 and 2002. The subsequent reduction in light forest coverage is explained by the establishment of the Participatory Forest Management (PFMA) approach by Department of Water Affairs and Forestry (DWAF) which reversed the degradation trend. However, specific degradation hotspots were identified, particularly where new settlements have been established. The emergence of the non-vegetated area increased gradually from 7% in 1986 to 23.4% in 2013. Notably, dense forest was observed to have experienced higher rates of forest degradation and deforestation than the light forest. The highest number patches were 4 recorded between 2002 and 1998, followed by between 2010 and 2013 and lastly 1986. Based on spatial connectedness of patches, the year 1986 had the highest landscape connectedness of forest vegetation (CONAT = 35.3) followed by 2002 and 1996 while the year 2010 and 2013 had the lowest landscape contiguity. Over the study period, the distribution of patches clearly shows that forest degradation and deforestation rates were lower in the years 1986, 1998 and tremendously increased in the later period of between 2010 and 2013. However, as a result of rehabilitation efforts, dense forest was seen to steadily gain more land than light forest. Finer details of degradation trends could not be easily picked from the images used in the study, given their spatial resolution limitations. That notwithstanding, the trends identified are good for overview decisions. The study has also established that de-agraianisation, forest restoration and rehabilitation greatly contributed to increased forest cover. Therefore, with more use of GIS by forest managers, and imagery of the high resolution being readily available, forests will in future be easily monitored using remote sensing.
- Full Text:
- Date Issued: 2018
- Authors: Katende, Lukyamuzi Lucky Fulgentius
- Date: 2018
- Subjects: Deforestation -- South Africa -- Eastern Cape , Forest degradation -- South Africa -- Eastern Cape Forest management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/30649 , vital:31006
- Description: Indigenous forests along the Wild Coast of the Eastern Cape Province have experienced both degradation and deforestation over the past decades. In early 2000, steps were taken to rehabilitate some of the degraded areas. Nevertheless, there is no monitoring mechanism in place, so little is known about the extent of degradation and impact of the rehabilitation efforts. The present study assesses the extent to which deforestation and degradation of the indigenous forests have occurred, and evaluates rehabilitation efforts in the study area around Port Saint John’s. Forest degradation was defined as the decrease in forest cover density while deforestation was defined as an increase in the trend of light forests and/ or a decrease in dense forests. The details for this study were obtained from multi – temporal remotely sensed data for a period between 1982 and 2013 (31 years). Multi-temporal Landsat satellite imagery for 1982, 1986, 1989, 2002, 2009 and 2013 was acquired and analysed. On the basis of prior knowledge of the area, the supervised classification approach was used. The Maximum likelihood supervised classification technique was used to extract information from satellite data. The classified images were filtered using a majority filtering procedure to reduce noise. Google Earth (Astrium) ancillary images were used to refine the classification based on expert rules. The derived changes in the degraded and rehabilitated areas were further validated through field visits. The overall image classification accuracy generated from Landsat image data ranged from 80% to 90%. It was noted that the area of dense forest almost doubled between 1986 and 1989, coinciding with a 59% decrease in the light forest. Subsequently, dense forests increased by 14,820 ha while light forests decreased by 16,690 ha between 1989 and 2002. The subsequent reduction in light forest coverage is explained by the establishment of the Participatory Forest Management (PFMA) approach by Department of Water Affairs and Forestry (DWAF) which reversed the degradation trend. However, specific degradation hotspots were identified, particularly where new settlements have been established. The emergence of the non-vegetated area increased gradually from 7% in 1986 to 23.4% in 2013. Notably, dense forest was observed to have experienced higher rates of forest degradation and deforestation than the light forest. The highest number patches were 4 recorded between 2002 and 1998, followed by between 2010 and 2013 and lastly 1986. Based on spatial connectedness of patches, the year 1986 had the highest landscape connectedness of forest vegetation (CONAT = 35.3) followed by 2002 and 1996 while the year 2010 and 2013 had the lowest landscape contiguity. Over the study period, the distribution of patches clearly shows that forest degradation and deforestation rates were lower in the years 1986, 1998 and tremendously increased in the later period of between 2010 and 2013. However, as a result of rehabilitation efforts, dense forest was seen to steadily gain more land than light forest. Finer details of degradation trends could not be easily picked from the images used in the study, given their spatial resolution limitations. That notwithstanding, the trends identified are good for overview decisions. The study has also established that de-agraianisation, forest restoration and rehabilitation greatly contributed to increased forest cover. Therefore, with more use of GIS by forest managers, and imagery of the high resolution being readily available, forests will in future be easily monitored using remote sensing.
- Full Text:
- Date Issued: 2018
Assessment of pharmaceutical equivalence of topical cream products containing hydrocortisone acetate using in vitro release testing (IVRT)
- Mudyahoto, Nyengeterai Amanda
- Authors: Mudyahoto, Nyengeterai Amanda
- Date: 2018
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63384 , vital:28404
- Description: Expected release date-April 2020
- Full Text:
- Date Issued: 2018
- Authors: Mudyahoto, Nyengeterai Amanda
- Date: 2018
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63384 , vital:28404
- Description: Expected release date-April 2020
- Full Text:
- Date Issued: 2018
Assessment of pheromone specificity in Thaumatotibia leucotreta (Meyrick) populations with focus on pest monitoring and the regional rollout of the sterile insect technique in citrus
- Authors: Joubert, Francois D
- Date: 2018
- Subjects: Cryptophlebia leucotreta , Pheromone traps , Citrus -- Diseases and pests -- South Africa , Cryptophlebia leucotreta -- Contol , Cryptophlebia leucotreta -- Biological control
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/60665 , vital:27812
- Description: False codling moth (FCM), Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae) is considered the most important indigenous pest of citrus in southern Africa. It is recognized by several markets as a phytosanitary organism and the efficient control of this pest is now more important than ever. The pheromone communication between the male and female moths has been exploited in order to control FCM through the sterile insect technique (SIT). The sterilized males used for all SIT programmes across South Africa come from a colony that originates from wild material collected from the Citrusdal area of the Western Cape Province. The aim of this study was to determine if any differences in attractiveness of females to males exist between different geographical populations of FCM and if so what impact this would have on the male’s ability to locate females from other populations via the volatile sex pheromone released by the female. Laboratory trials with Y-tube olfactometers and flight tunnels tested the attraction of male moths to virgin females, but did not yield any consistent results. Field experiments were conducted with sterile male Citrusdal moths released and recaptured in yellow delta traps in two separate trials. For one trial, the traps were baited with live virgin females from five different geographical populations including Addo, Nelspruit, Marble Hall, Citrusdal and the Old colony, which is a mixture of several populations. For the other trial traps were baited with various synthetic pheromone blends including three regional blends which included South Africa, Ivory Coast and Malawi and three commercial blends including Pherolure, Isomate and Checkmate. For the virgin female trial the Citrusdal males showed a significant preference for females from their own population. There was also a significant difference in the recaptures from the different synthetic pheromones. The South African blend was the most attractive of all the regional and commercial blends. A cross-mating trial was also conducted under laboratory conditions in petri dishes with five different FCM populations including Citrusdal, Addo, Marble Hall, Nelspruit and Old (mixed origin). Females produced more eggs when mated with males from the same population for the Addo, Marble Hall, Nelspruit and Old (mixed origin) populations. The only case in which this was statistically significant was for the Marble Hall population. All the crosses produced viable eggs and the origin of the male or female did not influence egg hatch. The results from this study may lead to improvements in both the control and monitoring of FCM populations. The control methods include mating disruption, attract-and-kill and SIT. Tailoring these methods for a specific growing area with a pheromone blend originating from the area or releasing sterile moths from a colony that originates from the area may optimize the available monitoring and control options.
- Full Text:
- Date Issued: 2018
- Authors: Joubert, Francois D
- Date: 2018
- Subjects: Cryptophlebia leucotreta , Pheromone traps , Citrus -- Diseases and pests -- South Africa , Cryptophlebia leucotreta -- Contol , Cryptophlebia leucotreta -- Biological control
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/60665 , vital:27812
- Description: False codling moth (FCM), Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae) is considered the most important indigenous pest of citrus in southern Africa. It is recognized by several markets as a phytosanitary organism and the efficient control of this pest is now more important than ever. The pheromone communication between the male and female moths has been exploited in order to control FCM through the sterile insect technique (SIT). The sterilized males used for all SIT programmes across South Africa come from a colony that originates from wild material collected from the Citrusdal area of the Western Cape Province. The aim of this study was to determine if any differences in attractiveness of females to males exist between different geographical populations of FCM and if so what impact this would have on the male’s ability to locate females from other populations via the volatile sex pheromone released by the female. Laboratory trials with Y-tube olfactometers and flight tunnels tested the attraction of male moths to virgin females, but did not yield any consistent results. Field experiments were conducted with sterile male Citrusdal moths released and recaptured in yellow delta traps in two separate trials. For one trial, the traps were baited with live virgin females from five different geographical populations including Addo, Nelspruit, Marble Hall, Citrusdal and the Old colony, which is a mixture of several populations. For the other trial traps were baited with various synthetic pheromone blends including three regional blends which included South Africa, Ivory Coast and Malawi and three commercial blends including Pherolure, Isomate and Checkmate. For the virgin female trial the Citrusdal males showed a significant preference for females from their own population. There was also a significant difference in the recaptures from the different synthetic pheromones. The South African blend was the most attractive of all the regional and commercial blends. A cross-mating trial was also conducted under laboratory conditions in petri dishes with five different FCM populations including Citrusdal, Addo, Marble Hall, Nelspruit and Old (mixed origin). Females produced more eggs when mated with males from the same population for the Addo, Marble Hall, Nelspruit and Old (mixed origin) populations. The only case in which this was statistically significant was for the Marble Hall population. All the crosses produced viable eggs and the origin of the male or female did not influence egg hatch. The results from this study may lead to improvements in both the control and monitoring of FCM populations. The control methods include mating disruption, attract-and-kill and SIT. Tailoring these methods for a specific growing area with a pheromone blend originating from the area or releasing sterile moths from a colony that originates from the area may optimize the available monitoring and control options.
- Full Text:
- Date Issued: 2018
Assessment of the Eastern Cape Provincial Public Service Commission in promoting public service ethics
- Authors: Butana, Vulikhaya
- Date: 2018
- Subjects: Public administration -- Moral and ethical aspects Civil service ethics Public administration
- Language: English
- Type: Thesis , Masters , Public Administration
- Identifier: http://hdl.handle.net/10353/10295 , vital:35391
- Description: After the fall of the apartheid government with discriminatory laws and the rise and dawn of democracy in South Africa (SA), the government had to restructure the Public Service (PS). The creation and development of PS legislations and policies to regulate the PS took place. The PSC in 1999 was developed to monitor and steer the operation of the PS. The main objective of this study is to assess the Public Service Commission (PSC) in promoting the professional and ethical environment in the Public Service (PS). The PSC is an independent and impartial body or institution which is mandated by the Republic of South African Constitution of 1996 (Act No.108 of 1996), Public Service Commission Act and the Public Service Act. Chapter ten of the Constitution gives PSC a mandate to ensure that the egalitarian values and principles governing public administration are maintained by government departments, organizations, parastatals and administrations providing the PS, where in this study focus on the promotion of ethics. The methodology used in this study is qualitative research methodology. The study used desktop research where by a data was collected using books, journal articles, academic papers, online information and media reports. The findings of this study highlighted that non-compliance to rules and regulations, lack of policy implementation, limited financial and human resources are still the major problems facing the South African Public Service (SAPS). However, the study recommends that, the PSC must work closely with government departments, promotion of ethics workshops and conferences. In a nutshell, the PSC could improve by developing and regularly reviewing policies, procedures, practices and institutions influencing ethical conduct in the public service.
- Full Text:
- Date Issued: 2018
- Authors: Butana, Vulikhaya
- Date: 2018
- Subjects: Public administration -- Moral and ethical aspects Civil service ethics Public administration
- Language: English
- Type: Thesis , Masters , Public Administration
- Identifier: http://hdl.handle.net/10353/10295 , vital:35391
- Description: After the fall of the apartheid government with discriminatory laws and the rise and dawn of democracy in South Africa (SA), the government had to restructure the Public Service (PS). The creation and development of PS legislations and policies to regulate the PS took place. The PSC in 1999 was developed to monitor and steer the operation of the PS. The main objective of this study is to assess the Public Service Commission (PSC) in promoting the professional and ethical environment in the Public Service (PS). The PSC is an independent and impartial body or institution which is mandated by the Republic of South African Constitution of 1996 (Act No.108 of 1996), Public Service Commission Act and the Public Service Act. Chapter ten of the Constitution gives PSC a mandate to ensure that the egalitarian values and principles governing public administration are maintained by government departments, organizations, parastatals and administrations providing the PS, where in this study focus on the promotion of ethics. The methodology used in this study is qualitative research methodology. The study used desktop research where by a data was collected using books, journal articles, academic papers, online information and media reports. The findings of this study highlighted that non-compliance to rules and regulations, lack of policy implementation, limited financial and human resources are still the major problems facing the South African Public Service (SAPS). However, the study recommends that, the PSC must work closely with government departments, promotion of ethics workshops and conferences. In a nutshell, the PSC could improve by developing and regularly reviewing policies, procedures, practices and institutions influencing ethical conduct in the public service.
- Full Text:
- Date Issued: 2018