A formative intervention for developing Learner Representative Council (LRC) voice and leadership in a newly established school in Namibia
- Authors: Amadhila, Linda
- Date: 2018
- Subjects: School management and organization -- Namibia , Educational leadership -- Namibia , Education, Secondary -- Namibia , Student government -- Namibia , Student participation in administration -- Namibia
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61744 , vital:28054
- Description: In Namibian schools, learner voice and leadership are being promoted through the policy document entitled the Education Act 16 of2001 which provides an opportunity to establish Learner Representative Councils (LRCs) in secondary schools. However, recent studies have found that this body of learner leaders do not function all that effectively and sometimes exist for the sake of adhering to the policy. This prompted me to conduct an activity theoretical interventionist case- study within the critical paradigm, to develop LRC voice and leadership in a newly established Namibian school. Framed by Cultural Historical Activity Theory, the study was divided into two phases to answer the over-arching question: How can LRC voice and leadership be developed in a school? Phase one was largely interpretive, the contextual profiling phase, where document analysis, individual interviews, questionnaires and observations were used to generate data to answer the following research sub-questions: How is learner leadership understood in the school? What leadership development opportunities for the LRC currently exist in the school? What underlying factors constrain the development of LRC voice and leadership in the newly established school? Phase two of the study was the expansive learning phase, which consisted of three intervention workshops. The Change Laboratory method and a focus group interview were used to generate data in response to the last research sub-question: In what ways can LRC participation in a Change Laboratory process contribute to their leadership development? Data generated were inductively and deductively analysed, using the activity theoretical principles of contradictions and double stimulation. Data revealed that learner leadership was largely understood as managerial roles carried out by the LRC in the school. Unlike many schools in Namibia, this case-study school offered numerous leadership development opportunities for the LRC. The community networking events such as: School Exchange Programmes, Town Council breakfast and Junior Regional Council, were opportunities offered to the LRC to solicit information, exchange ideas and discuss matters of common interest with the LRCs of the fully established schools. However, there were a number of challenges that constrained LRC voice and leadership development, the major one being the fact that this was a newly established school. Of significance was that LRC participation in the Change Laboratory process contributed positively to the development of voice and leadership in learners. During this Change Laboratory process, the LRC developed a new artefact - the vision and mission statement of the school - this signified that the learners expansively transformed the object of their activity. Recommendations emerging out of the study included that the School Management Team see the ‘newly established’ status of the school as an opportunity for development, rather than a limitation, and therefore invite the LRC to participate in the different leadership practices as the school becomes established. A significant recommendation for school leadership research is to use the third generation of CHAT to expand the unit of analysis, in order to understand the leadership relations and power dynamics between multiple activity systems in schools as complex organisations.
- Full Text:
- Date Issued: 2018
- Authors: Amadhila, Linda
- Date: 2018
- Subjects: School management and organization -- Namibia , Educational leadership -- Namibia , Education, Secondary -- Namibia , Student government -- Namibia , Student participation in administration -- Namibia
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61744 , vital:28054
- Description: In Namibian schools, learner voice and leadership are being promoted through the policy document entitled the Education Act 16 of2001 which provides an opportunity to establish Learner Representative Councils (LRCs) in secondary schools. However, recent studies have found that this body of learner leaders do not function all that effectively and sometimes exist for the sake of adhering to the policy. This prompted me to conduct an activity theoretical interventionist case- study within the critical paradigm, to develop LRC voice and leadership in a newly established Namibian school. Framed by Cultural Historical Activity Theory, the study was divided into two phases to answer the over-arching question: How can LRC voice and leadership be developed in a school? Phase one was largely interpretive, the contextual profiling phase, where document analysis, individual interviews, questionnaires and observations were used to generate data to answer the following research sub-questions: How is learner leadership understood in the school? What leadership development opportunities for the LRC currently exist in the school? What underlying factors constrain the development of LRC voice and leadership in the newly established school? Phase two of the study was the expansive learning phase, which consisted of three intervention workshops. The Change Laboratory method and a focus group interview were used to generate data in response to the last research sub-question: In what ways can LRC participation in a Change Laboratory process contribute to their leadership development? Data generated were inductively and deductively analysed, using the activity theoretical principles of contradictions and double stimulation. Data revealed that learner leadership was largely understood as managerial roles carried out by the LRC in the school. Unlike many schools in Namibia, this case-study school offered numerous leadership development opportunities for the LRC. The community networking events such as: School Exchange Programmes, Town Council breakfast and Junior Regional Council, were opportunities offered to the LRC to solicit information, exchange ideas and discuss matters of common interest with the LRCs of the fully established schools. However, there were a number of challenges that constrained LRC voice and leadership development, the major one being the fact that this was a newly established school. Of significance was that LRC participation in the Change Laboratory process contributed positively to the development of voice and leadership in learners. During this Change Laboratory process, the LRC developed a new artefact - the vision and mission statement of the school - this signified that the learners expansively transformed the object of their activity. Recommendations emerging out of the study included that the School Management Team see the ‘newly established’ status of the school as an opportunity for development, rather than a limitation, and therefore invite the LRC to participate in the different leadership practices as the school becomes established. A significant recommendation for school leadership research is to use the third generation of CHAT to expand the unit of analysis, in order to understand the leadership relations and power dynamics between multiple activity systems in schools as complex organisations.
- Full Text:
- Date Issued: 2018
A gender based analysis of the Amalima Programme in empowering married women within households in rural Gwanda, Zimbabwe
- Authors: Sibanda, Patience
- Date: 2018
- Subjects: Non-governmental organizations Zimbabwe Matabeleland South Province , Power (Social sciences) Zimbabwe Matabeleland South Province , Women Zimbabwe Social conditions , Women's rights Zimbabwe , Patriarchy Zimbabwe Matabeleland South Province
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63682 , vital:28470
- Description: Non-Governmental Organisations (NGOs) have occupied a prominent role in the socio-economic development of rural areas of Zimbabwe since the time of the country’s independence in 1980, including a focus on improving the conditions and status of women in communal areas. These NGOs adopt a participatory methodology in their development programmes and projects, as they try to ensure that the active participation of women in rural development facilitates women’s access to resources and the realisation of their rights. These initiatives are important given the pronounced system of patriarchy which exists in communal areas. In the context of local patriarchies, NGOs also often claim that they empower women. This thesis focuses on the work of one particular NGO programme, namely the Amalima programme, with a particular focus on three wards in the communal areas in Gwanda, Zimbabwe. From a gendered perspective concerned with questions of women’s empowerment, the main objective of the thesis is to provide a critical analysis of the Amalima programme with particular reference to married women in Gwanda. Based on original fieldwork (including interviews with men, women and NGO practitioners), the thesis concludes that the outcomes of the Amalima programme in empowering married women in Gwanda are uneven and that, overall, the local system of patriarchy (including at household level) remains largely intact.
- Full Text:
- Date Issued: 2018
- Authors: Sibanda, Patience
- Date: 2018
- Subjects: Non-governmental organizations Zimbabwe Matabeleland South Province , Power (Social sciences) Zimbabwe Matabeleland South Province , Women Zimbabwe Social conditions , Women's rights Zimbabwe , Patriarchy Zimbabwe Matabeleland South Province
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63682 , vital:28470
- Description: Non-Governmental Organisations (NGOs) have occupied a prominent role in the socio-economic development of rural areas of Zimbabwe since the time of the country’s independence in 1980, including a focus on improving the conditions and status of women in communal areas. These NGOs adopt a participatory methodology in their development programmes and projects, as they try to ensure that the active participation of women in rural development facilitates women’s access to resources and the realisation of their rights. These initiatives are important given the pronounced system of patriarchy which exists in communal areas. In the context of local patriarchies, NGOs also often claim that they empower women. This thesis focuses on the work of one particular NGO programme, namely the Amalima programme, with a particular focus on three wards in the communal areas in Gwanda, Zimbabwe. From a gendered perspective concerned with questions of women’s empowerment, the main objective of the thesis is to provide a critical analysis of the Amalima programme with particular reference to married women in Gwanda. Based on original fieldwork (including interviews with men, women and NGO practitioners), the thesis concludes that the outcomes of the Amalima programme in empowering married women in Gwanda are uneven and that, overall, the local system of patriarchy (including at household level) remains largely intact.
- Full Text:
- Date Issued: 2018
An assessment of female and management perceptions of factors moderating leadership mobility at Logistic (PTY) LTD
- Authors: Rippon, Marion Magdelyn
- Date: 2018
- Subjects: Transformational leadership Leadership in women
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/17897 , vital:28480
- Description: Senior management positions at a South African-based logistics company Logistic (Pty) Ltd (pseudonym) are predominantly occupied by males which led to the primary question: why are females not better represented at senior levels within the organisation and why do promotion into these senior managerial positions appears difficult? The objective of this study was to determine factors impacting female advancement and to develop strategies based on identified influencing factors. Based on an interpretivist paradigm, the study used a phenomenological approach which was based on an appreciative enquiry research to understand experiences perceived and interpreted by individuals within the organisation. Various findings emerged in terms of the research questions of how management perceive and support female advancement, the perception of barriers experienced by females and the perception of the potential of the organisation promoting females in terms of providing an enabling environment. Findings which were not conducive to female advancement were identified as non-supporting organisational culture due to the inherent history of the organisation, tokenism by trying to rectify the phenomenon, transparent barriers experienced by females trying to ascend the corporate ladder and the lack of a pool of suitable candidates in the junior levels of the organisation which could be caused by the industry in which the organisation does business. Conclusions surrounding organisational intentions and actions were reached, which included recommendations for progressing towards the goals as agreed by the Commission for Employment Equity (CEE) and its strategic and sectoral stakeholders.
- Full Text:
- Date Issued: 2018
- Authors: Rippon, Marion Magdelyn
- Date: 2018
- Subjects: Transformational leadership Leadership in women
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/17897 , vital:28480
- Description: Senior management positions at a South African-based logistics company Logistic (Pty) Ltd (pseudonym) are predominantly occupied by males which led to the primary question: why are females not better represented at senior levels within the organisation and why do promotion into these senior managerial positions appears difficult? The objective of this study was to determine factors impacting female advancement and to develop strategies based on identified influencing factors. Based on an interpretivist paradigm, the study used a phenomenological approach which was based on an appreciative enquiry research to understand experiences perceived and interpreted by individuals within the organisation. Various findings emerged in terms of the research questions of how management perceive and support female advancement, the perception of barriers experienced by females and the perception of the potential of the organisation promoting females in terms of providing an enabling environment. Findings which were not conducive to female advancement were identified as non-supporting organisational culture due to the inherent history of the organisation, tokenism by trying to rectify the phenomenon, transparent barriers experienced by females trying to ascend the corporate ladder and the lack of a pool of suitable candidates in the junior levels of the organisation which could be caused by the industry in which the organisation does business. Conclusions surrounding organisational intentions and actions were reached, which included recommendations for progressing towards the goals as agreed by the Commission for Employment Equity (CEE) and its strategic and sectoral stakeholders.
- Full Text:
- Date Issued: 2018
A model for smart factories in the automotive sector
- Authors: Leo, Jo-Anne Ronell
- Date: 2018
- Subjects: Internet of things , Manufacturing processes -- Automation Labor supply -- Effect of technological innovations on Cloud computing
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/22531 , vital:29997
- Description: The manufacturing industry is on the brink of transformation, with smart factories and digitalisation at the forefront. New challenges such as globalisation, cost pressure and consumer demands are imminent in the current environment. In order to overcome these challenges, the Fourth Industrial Revolution, also known as Industry 4.0 has emerged. Industry 4.0 promotes the computerisation of manufacturing facilities and emphasises an end-to-end digitalisation of physical resources and integration of processes through the entire value chain. The smart factory, a component of Industry 4.0, is a self-organised, modular, highly flexible and reconfigurable factory that enables production of customised products at low cost, therefore maximising profitability. Manufacturing processes are driven by technologies such as cyber-physical systems, big data, collaborative robots and the Internet of Things. This allows autonomous communication throughout the value chain between machine-to-machine and human-to-machine. Organisations consider automation and technology as strategic business tools which are used to increase short and long term profits and realise operating objectives. In contrast, the implementation of automation and technology in the workplace raises labour concerns, fear of layoffs and redundancies among the workforce. This unease, in turn, influences the employees’ attitude towards technology which could lead either to its acceptance or refusal thereof. The purpose of this research is to enhance the understanding of smart factories in the automotive industry by conducting a systematic analysis of the factors which influence the attitude of those involved towards a smart factory implementation. This study focuses on the perceptions among employees and management. The research is an quantitative study consisting of a literature review of the key concepts related to Industry 4.0, smart factories and technology-acceptance theories. The empirical study consisted of surveys completed by management and employees of one of the automotive Original Equipment Manufacturers (OEM), in South Africa. The questionnaire used in this research consists of questions regarding demographic data and questions regarding the perception of change and factors influencing the attitudes towards the acceptance of technology within the OEM. To summarise the data into a more condensed form which could simplify the identification of patterns in the data, descriptive statistics were used. Inferential statistics were used to validate if the conclusions made from the sample data could be inferred to a larger population. Various factors influence the perception about ease of use and usefulness, which then in turn influences the attitude and the intention to use technology. These factors have been examined by numerous authors in the technology acceptance literature. Recommended factors based on the statistical analysis of the questionnaire results were identified. A model identified the following factors as having an influence on the Attitude towards the Positive Impact of Smart Factories within the OEM: Skills and Training, Individual Characteristics, Trust, Organisational Culture, Resources and Costs and Job Security. The importance of each factor was identified to understand its function in how to improve the implementation of smart factories. This research suggested improvements for the automotive OEM based on the statistical analysis of the survey results. Inconclusive results were indicated on three variables and these should be improved, namely, Organisational Culture, Job Security and Security and International / National Standards. Two sub-groups were defined by different job levels and different perceptions were found concerning the factors that were measured. People at different job levels in the OEM perceived medium to large significant differences in all the factors comprising the proposed model of the Attitude towards a Smart Factory. The smart factory model developed in this study specified the factors which influence the Attitude towards a Smart Factory within the automotive sector and the effect these factors have on technology acceptance.
- Full Text:
- Date Issued: 2018
- Authors: Leo, Jo-Anne Ronell
- Date: 2018
- Subjects: Internet of things , Manufacturing processes -- Automation Labor supply -- Effect of technological innovations on Cloud computing
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/22531 , vital:29997
- Description: The manufacturing industry is on the brink of transformation, with smart factories and digitalisation at the forefront. New challenges such as globalisation, cost pressure and consumer demands are imminent in the current environment. In order to overcome these challenges, the Fourth Industrial Revolution, also known as Industry 4.0 has emerged. Industry 4.0 promotes the computerisation of manufacturing facilities and emphasises an end-to-end digitalisation of physical resources and integration of processes through the entire value chain. The smart factory, a component of Industry 4.0, is a self-organised, modular, highly flexible and reconfigurable factory that enables production of customised products at low cost, therefore maximising profitability. Manufacturing processes are driven by technologies such as cyber-physical systems, big data, collaborative robots and the Internet of Things. This allows autonomous communication throughout the value chain between machine-to-machine and human-to-machine. Organisations consider automation and technology as strategic business tools which are used to increase short and long term profits and realise operating objectives. In contrast, the implementation of automation and technology in the workplace raises labour concerns, fear of layoffs and redundancies among the workforce. This unease, in turn, influences the employees’ attitude towards technology which could lead either to its acceptance or refusal thereof. The purpose of this research is to enhance the understanding of smart factories in the automotive industry by conducting a systematic analysis of the factors which influence the attitude of those involved towards a smart factory implementation. This study focuses on the perceptions among employees and management. The research is an quantitative study consisting of a literature review of the key concepts related to Industry 4.0, smart factories and technology-acceptance theories. The empirical study consisted of surveys completed by management and employees of one of the automotive Original Equipment Manufacturers (OEM), in South Africa. The questionnaire used in this research consists of questions regarding demographic data and questions regarding the perception of change and factors influencing the attitudes towards the acceptance of technology within the OEM. To summarise the data into a more condensed form which could simplify the identification of patterns in the data, descriptive statistics were used. Inferential statistics were used to validate if the conclusions made from the sample data could be inferred to a larger population. Various factors influence the perception about ease of use and usefulness, which then in turn influences the attitude and the intention to use technology. These factors have been examined by numerous authors in the technology acceptance literature. Recommended factors based on the statistical analysis of the questionnaire results were identified. A model identified the following factors as having an influence on the Attitude towards the Positive Impact of Smart Factories within the OEM: Skills and Training, Individual Characteristics, Trust, Organisational Culture, Resources and Costs and Job Security. The importance of each factor was identified to understand its function in how to improve the implementation of smart factories. This research suggested improvements for the automotive OEM based on the statistical analysis of the survey results. Inconclusive results were indicated on three variables and these should be improved, namely, Organisational Culture, Job Security and Security and International / National Standards. Two sub-groups were defined by different job levels and different perceptions were found concerning the factors that were measured. People at different job levels in the OEM perceived medium to large significant differences in all the factors comprising the proposed model of the Attitude towards a Smart Factory. The smart factory model developed in this study specified the factors which influence the Attitude towards a Smart Factory within the automotive sector and the effect these factors have on technology acceptance.
- Full Text:
- Date Issued: 2018
Population connectivity of an overexploited coastal fish, Argyrosomus coronus (Sciaenidae), in an ocean-warming hotspot
- Henriques, R, Potts, Warren M, Santos, Carmen V D, Sauer, Warwick H H, Shaw, Paul W
- Authors: Henriques, R , Potts, Warren M , Santos, Carmen V D , Sauer, Warwick H H , Shaw, Paul W
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125720 , vital:35811 , https://doi.10.2989/1814232X.2018.1434090
- Description: Anthropogenic activities are recognised as causing significant impacts to marine systems at multiple levels, ranging from habitat disturbance (Pauly et al. 2005) to overfishing (Sala and Knowlton 2006) and loss of genetic diversity (Pinsky and Palumbi 2014). Exploitation and harvesting in particular are known to strongly influence fish populations and their associated ecosystems (Pauly et al. 2005), and in combination with ongoing climate change can have compound effects on the viability and long-term survival of marine fishes (Last et al. 2011). Species can react to the impacts of climate change either by shifting their distributional range or by adapting to changing conditions through individual ecological plasticity and/or local population adaptation (Briggs 2011; Last et al. 2011). However, since ecological plasticity and local adaptation have strong genetic components, overharvesting has the potential to impact the long-term adaptive ability of marine fishes by decreasing the extant genetic diversity (Allendorf et al. 2014). Therefore, understanding the impact of exploitation on genetic diversity and population substructuring is critical for predicting the likely consequences of continued exploitation and climate change.
- Full Text:
- Date Issued: 2018
- Authors: Henriques, R , Potts, Warren M , Santos, Carmen V D , Sauer, Warwick H H , Shaw, Paul W
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125720 , vital:35811 , https://doi.10.2989/1814232X.2018.1434090
- Description: Anthropogenic activities are recognised as causing significant impacts to marine systems at multiple levels, ranging from habitat disturbance (Pauly et al. 2005) to overfishing (Sala and Knowlton 2006) and loss of genetic diversity (Pinsky and Palumbi 2014). Exploitation and harvesting in particular are known to strongly influence fish populations and their associated ecosystems (Pauly et al. 2005), and in combination with ongoing climate change can have compound effects on the viability and long-term survival of marine fishes (Last et al. 2011). Species can react to the impacts of climate change either by shifting their distributional range or by adapting to changing conditions through individual ecological plasticity and/or local population adaptation (Briggs 2011; Last et al. 2011). However, since ecological plasticity and local adaptation have strong genetic components, overharvesting has the potential to impact the long-term adaptive ability of marine fishes by decreasing the extant genetic diversity (Allendorf et al. 2014). Therefore, understanding the impact of exploitation on genetic diversity and population substructuring is critical for predicting the likely consequences of continued exploitation and climate change.
- Full Text:
- Date Issued: 2018
Exploring grade 3 teachers’ resistance to ‘take up’progressive mathematics teaching roles
- Graven, Mellony, Westaway, Lise
- Authors: Graven, Mellony , Westaway, Lise
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69700 , vital:29568 , https://DOI: 10.1007/s13394-018-0237-7
- Description: This article addresses the question: Why teachers of mathematics have yet to ‘take up’ progressive roles? Drawing on the philosophy of critical realism and its methodological equivalent, social realism, we analyse interview and observation data of four grade 3 teachers, with the view to identifying the mechanisms conditioning the expression of teachers’ identities. In so doing, we show how post-apartheid changes in systemic roles of teachers create contradictory tensions for teachers as these bring their own mathematical learning and teaching experiences into contradiction with the new post-apartheid roles they are mandated to enact. We examine how this contradiction, together with beliefs about mathematics, pedagogy and learners, is expressed in the teaching of grade 3 mathematics. We maintain that the complementarity between teachers’ beliefs and old systemic roles provides an explanation for why teachers of grade 3 mathematics have yet to ‘take-up’ progressive roles. The implications point to the need for teacher development that creates enablers that lead to changes in classroom practices that align with policy-designated, progressive roles in teaching mathematics.
- Full Text:
- Date Issued: 2018
- Authors: Graven, Mellony , Westaway, Lise
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/69700 , vital:29568 , https://DOI: 10.1007/s13394-018-0237-7
- Description: This article addresses the question: Why teachers of mathematics have yet to ‘take up’ progressive roles? Drawing on the philosophy of critical realism and its methodological equivalent, social realism, we analyse interview and observation data of four grade 3 teachers, with the view to identifying the mechanisms conditioning the expression of teachers’ identities. In so doing, we show how post-apartheid changes in systemic roles of teachers create contradictory tensions for teachers as these bring their own mathematical learning and teaching experiences into contradiction with the new post-apartheid roles they are mandated to enact. We examine how this contradiction, together with beliefs about mathematics, pedagogy and learners, is expressed in the teaching of grade 3 mathematics. We maintain that the complementarity between teachers’ beliefs and old systemic roles provides an explanation for why teachers of grade 3 mathematics have yet to ‘take-up’ progressive roles. The implications point to the need for teacher development that creates enablers that lead to changes in classroom practices that align with policy-designated, progressive roles in teaching mathematics.
- Full Text:
- Date Issued: 2018
The impact of cultural attrition on youth behaviour :the case of ulwaluko and Intonjane cultural practices in Mthatha and Mount Frere, Eastern Cape, South Africa
- Authors: Nomngcoyiya, Thanduxolo
- Date: 2018
- Subjects: Afrocentrism Female circumcision -- South Africa -- Eastern Cape Initiation rites -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5576 , vital:29346
- Description: This study explored the impact of cultural attrition on youth behaviour: A case of ulwaluko and intonjane cultural practices in Mthatha and Mount Frere areas, Eastern Cape, South Africa. The study endeavoured to achieve the following specific objectives: (i) to respectively examine youth perceptions of ulwaluko and intonjane cultural practices and their impact towards their behaviour; (ii) to establish different stakeholders’ perceptions on the link between current youth behaviours and attrition of ulwaluko and intonjane cultural practices; (iii) to explore the extent to which cultural attrition has impacted upon the cultural goal posts of both ulwaluko and intonjane practices; and (iv) to establish the effectiveness of policy environment designed to uphold cultural preservation, integrity, growth and development. The study was premised on theoretical lenses of anomie theory, socio-cultural theory, cultural imperialism theory, and cultural feminism theory. Methodologically, the study used both qualitative and quantitative paradigm and was thus guided by mixed research design which was case study and mini survey. The data was collected through in-depth one-on-one interviews, focus group discussions and key informants i n t h e qualitative aspect of the study. In addition, the quantitative data was gathered through distribution of questionnaires. The study used both non-probability and probability methods sample selection, specifically purposive sampling (for qualitative data) and cluster random sampling (for quantitative) techniques were used. Using these techniques, forty-two (42) participants were selected for qualitative interviews, and comprised of eighteen (18) young men and women of both gender divides. Moreover, nine (9) key informants were included in the qualitative data collection. Therefore, the total number of both participants and respondents was 105. Data was analysed qualitatively through thematic analysis, while descriptive statistics was used to analyse quantitative data through the use of SPSS software versions 24. The study revealed the following: a state of cultural crossroad for both intonjane and ulwaluko rites; cultural attrition is indeed a reality; culture incapable of holding their goal posts; modern era a huge driver to cultural attrition; unfriendly policies on cultures a driver to cultural attrition; human rights’ wave and advocacy aiding cultural attrition; political infiltration of cultures; human rights’ wave and advocacy aiding cultural attrition; and community forums as avenues of disseminating the benefits of cultural practices. Based on the evidence gathered in this study, the following recommendations are made: purposive use of mass media to promote indigenous cultures; community awareness in promoting and maintaining cultures; formulating cultural policies that embed stakeholders’ self-determination, and youth ownership and participation in cultural preservation. The study concludes that cultural practices such as ulwaluko and intonjane play a pivotal role in shaping young people’s behaviours and moral conducts. However, modernity forces and various omissions by stakeholders of these cultural practices have contributed to their attrition.
- Full Text:
- Date Issued: 2018
- Authors: Nomngcoyiya, Thanduxolo
- Date: 2018
- Subjects: Afrocentrism Female circumcision -- South Africa -- Eastern Cape Initiation rites -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5576 , vital:29346
- Description: This study explored the impact of cultural attrition on youth behaviour: A case of ulwaluko and intonjane cultural practices in Mthatha and Mount Frere areas, Eastern Cape, South Africa. The study endeavoured to achieve the following specific objectives: (i) to respectively examine youth perceptions of ulwaluko and intonjane cultural practices and their impact towards their behaviour; (ii) to establish different stakeholders’ perceptions on the link between current youth behaviours and attrition of ulwaluko and intonjane cultural practices; (iii) to explore the extent to which cultural attrition has impacted upon the cultural goal posts of both ulwaluko and intonjane practices; and (iv) to establish the effectiveness of policy environment designed to uphold cultural preservation, integrity, growth and development. The study was premised on theoretical lenses of anomie theory, socio-cultural theory, cultural imperialism theory, and cultural feminism theory. Methodologically, the study used both qualitative and quantitative paradigm and was thus guided by mixed research design which was case study and mini survey. The data was collected through in-depth one-on-one interviews, focus group discussions and key informants i n t h e qualitative aspect of the study. In addition, the quantitative data was gathered through distribution of questionnaires. The study used both non-probability and probability methods sample selection, specifically purposive sampling (for qualitative data) and cluster random sampling (for quantitative) techniques were used. Using these techniques, forty-two (42) participants were selected for qualitative interviews, and comprised of eighteen (18) young men and women of both gender divides. Moreover, nine (9) key informants were included in the qualitative data collection. Therefore, the total number of both participants and respondents was 105. Data was analysed qualitatively through thematic analysis, while descriptive statistics was used to analyse quantitative data through the use of SPSS software versions 24. The study revealed the following: a state of cultural crossroad for both intonjane and ulwaluko rites; cultural attrition is indeed a reality; culture incapable of holding their goal posts; modern era a huge driver to cultural attrition; unfriendly policies on cultures a driver to cultural attrition; human rights’ wave and advocacy aiding cultural attrition; political infiltration of cultures; human rights’ wave and advocacy aiding cultural attrition; and community forums as avenues of disseminating the benefits of cultural practices. Based on the evidence gathered in this study, the following recommendations are made: purposive use of mass media to promote indigenous cultures; community awareness in promoting and maintaining cultures; formulating cultural policies that embed stakeholders’ self-determination, and youth ownership and participation in cultural preservation. The study concludes that cultural practices such as ulwaluko and intonjane play a pivotal role in shaping young people’s behaviours and moral conducts. However, modernity forces and various omissions by stakeholders of these cultural practices have contributed to their attrition.
- Full Text:
- Date Issued: 2018
Characterizing early drug resistance-related events using geometric ensembles from HIV protease dynamics:
- Amamuddy, Olivier S, Bishop, Nigel T, Tastan Bishop, Özlem
- Authors: Amamuddy, Olivier S , Bishop, Nigel T , Tastan Bishop, Özlem
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148126 , vital:38712 , DOI: 10.1038/s41598-018-36041-8
- Description: The use of antiretrovirals (ARVs) has drastically improved the life quality and expectancy of HIV patients since their introduction in health care. Several millions are still afflicted worldwide by HIV and ARV resistance is a constant concern for both healthcare practitioners and patients, as while treatment options are finite, the virus constantly adapts via complex mutation patterns to select for resistant strains under the pressure of drug treatment. The HIV protease is a crucial enzyme for viral maturation and has been a game changing drug target since the first application. Due to similarities in protease inhibitor designs, drug cross-resistance is not uncommon across ARVs of the same class.
- Full Text:
- Date Issued: 2018
- Authors: Amamuddy, Olivier S , Bishop, Nigel T , Tastan Bishop, Özlem
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/148126 , vital:38712 , DOI: 10.1038/s41598-018-36041-8
- Description: The use of antiretrovirals (ARVs) has drastically improved the life quality and expectancy of HIV patients since their introduction in health care. Several millions are still afflicted worldwide by HIV and ARV resistance is a constant concern for both healthcare practitioners and patients, as while treatment options are finite, the virus constantly adapts via complex mutation patterns to select for resistant strains under the pressure of drug treatment. The HIV protease is a crucial enzyme for viral maturation and has been a game changing drug target since the first application. Due to similarities in protease inhibitor designs, drug cross-resistance is not uncommon across ARVs of the same class.
- Full Text:
- Date Issued: 2018
Photo-induced resonance energy transfer and nonlinear optical response in ball-type phthalocyanine conjugated to semiconductor and graphene quantum dots
- Nwaji, Njemuwa, Achadu, Ojodomo John, Nyokong, Tebello
- Authors: Nwaji, Njemuwa , Achadu, Ojodomo John , Nyokong, Tebello
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/187959 , vital:44713 , xlink:href="https://doi.org/10.1039/C7NJ05196D"
- Description: The synthesis of ball-type zinc and gallium phthalocyanines (complexes 2 and 3) and their covalent linkage to glutathione (GSH) and amine functionalized quantum dots QDs) are reported in this work. Furthermore, their photophysical, photo-induced resonance energy transfer and optical limiting responses were investigated. We observed a decrease in the fluorescence quantum yields with a corresponding increase in the triplet quantum yields of the nanoconjugates in comparison to the phthalocyanine complexes alone. The reverse saturable absorption was found to be dependent on the excited state absorption, and the observed limiting threshold ranged from 0.32 to 1.43 J cm−2. Enhanced triplet parameters and nonlinear optical performance were found when the complexes were covalently linked to semiconductor quantum dots compared to carbon based graphene quantum dots.
- Full Text:
- Date Issued: 2018
- Authors: Nwaji, Njemuwa , Achadu, Ojodomo John , Nyokong, Tebello
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/187959 , vital:44713 , xlink:href="https://doi.org/10.1039/C7NJ05196D"
- Description: The synthesis of ball-type zinc and gallium phthalocyanines (complexes 2 and 3) and their covalent linkage to glutathione (GSH) and amine functionalized quantum dots QDs) are reported in this work. Furthermore, their photophysical, photo-induced resonance energy transfer and optical limiting responses were investigated. We observed a decrease in the fluorescence quantum yields with a corresponding increase in the triplet quantum yields of the nanoconjugates in comparison to the phthalocyanine complexes alone. The reverse saturable absorption was found to be dependent on the excited state absorption, and the observed limiting threshold ranged from 0.32 to 1.43 J cm−2. Enhanced triplet parameters and nonlinear optical performance were found when the complexes were covalently linked to semiconductor quantum dots compared to carbon based graphene quantum dots.
- Full Text:
- Date Issued: 2018
The relationship between employability and labour market participation
- Uwuoruya, Nosayaba Frederick
- Authors: Uwuoruya, Nosayaba Frederick
- Date: 2018
- Subjects: Job hunting , Labor market -- Africa College graduates -- Employment -- Africa Career development
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/36101 , vital:33892
- Description: Unemployment is an urgent socio- economic issue facing not just Sub-Saharan Africa but also the global world at large (Yu, 2013). Globally, the International Labour Organisation (ILO) estimates that 201 million people were unemployed in 2014. Almost 74 million of those unemployed were young people (aged 15-24) in 2014. The ILO report further states that the number of people seeking employment was over 30 million more than in 2008, because several people lost their jobs due to the world economic recession. One of the results recorded from the ILO’s World Employment and Social Outlook 2016, show that youth unemployment is still three times that of the adult unemployment rate at 13.1% (ILO, 2016). Unemployed youths are estimated to be 73.3 million, a 3.3% decline from the global crisis in 2008 (ILO,2016:6). Crisp and Powell, (2016) indicate youth are vulnerable due to the economic fragility of the labour market and uneven recovery over the past years.
- Full Text:
- Date Issued: 2018
- Authors: Uwuoruya, Nosayaba Frederick
- Date: 2018
- Subjects: Job hunting , Labor market -- Africa College graduates -- Employment -- Africa Career development
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/36101 , vital:33892
- Description: Unemployment is an urgent socio- economic issue facing not just Sub-Saharan Africa but also the global world at large (Yu, 2013). Globally, the International Labour Organisation (ILO) estimates that 201 million people were unemployed in 2014. Almost 74 million of those unemployed were young people (aged 15-24) in 2014. The ILO report further states that the number of people seeking employment was over 30 million more than in 2008, because several people lost their jobs due to the world economic recession. One of the results recorded from the ILO’s World Employment and Social Outlook 2016, show that youth unemployment is still three times that of the adult unemployment rate at 13.1% (ILO, 2016). Unemployed youths are estimated to be 73.3 million, a 3.3% decline from the global crisis in 2008 (ILO,2016:6). Crisp and Powell, (2016) indicate youth are vulnerable due to the economic fragility of the labour market and uneven recovery over the past years.
- Full Text:
- Date Issued: 2018
Media portrayal of gender based violence: a perception study in Uitenhage, Eastern Cape South Africa.
- Oladimeji Olawumi Kate https://orcid.org/0000-0002-6577-0140
- Authors: Oladimeji Olawumi Kate https://orcid.org/0000-0002-6577-0140
- Date: 2018
- Subjects: Abused women http://id.loc.gov/authorities/subjects/sh86001790 , Mass media--Eastern Cape--South Africa , Mass media criticism--Eastern Cape--South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/19476 , vital:43131
- Description: Gender based violence (GBV) has become a global menace. The prevalence of this violence against women and children in South Africa reveals that the country is plagued by this horror called GBV. According to the South African police crime statistics, with regards to sexual offences, the SAPS reported 64 419 (2012), 66 197 (2014), 62 226 (2013) and 53 617 (2015) cases. A government survey conducted revealed that men were the main perpetrators of this violence. For example, 76 percent of men in Gauteng, 48 percent in Limpopo and 41 percent in KwaZulu-Natal admitted to perpetrating GBV. These alarming statistics calls for the attention of the media. The media is known to be a powerful tool of influence, however in the process, the media has been criticised to portray violence in ways which can have varying effect on the behaviour of those exposed to it. This study was therefore conducted to investigate the perception of the residents of Uitenhage on the media‘s portrayal of gender based violence against women and children. The mixed method of research was used to obtain data from the participants and respondents which were residents of Uitenhage, in the Eastern Cape, South Africa. Non-probability sampling in the form of purposive sampling was used to select the focus group participants while probability sampling in the form of simple random probability sampling was used to select the respondents with whom the questionnaires were administered to. Quantitative data analysis for questionnaires was done using descriptive statistics and findings were presented in form of tables and pie charts while qualitative data analysis for the focus group discussions was done using thematic analysis. A final sample of 257 valid responses were analysed, representing 80 percent response rate, three focus group discussions were also analysed. The study revealed that all the participants and respondents are exposed to more than one medium of mass communication, however participants and respondents opined that the media has both positive and negative effect on different individuals. The study also demonstrated that there is an association between people‘s exposure to the media and their violent behaviour which is attributed to the messages conveyed by the media. The study recommends amongst others that the media should take a more proactive approach to the issue of VAW. , Thesis (PhD) (Communication) -- University of Fort Hare, 2018
- Full Text:
- Date Issued: 2018
- Authors: Oladimeji Olawumi Kate https://orcid.org/0000-0002-6577-0140
- Date: 2018
- Subjects: Abused women http://id.loc.gov/authorities/subjects/sh86001790 , Mass media--Eastern Cape--South Africa , Mass media criticism--Eastern Cape--South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/19476 , vital:43131
- Description: Gender based violence (GBV) has become a global menace. The prevalence of this violence against women and children in South Africa reveals that the country is plagued by this horror called GBV. According to the South African police crime statistics, with regards to sexual offences, the SAPS reported 64 419 (2012), 66 197 (2014), 62 226 (2013) and 53 617 (2015) cases. A government survey conducted revealed that men were the main perpetrators of this violence. For example, 76 percent of men in Gauteng, 48 percent in Limpopo and 41 percent in KwaZulu-Natal admitted to perpetrating GBV. These alarming statistics calls for the attention of the media. The media is known to be a powerful tool of influence, however in the process, the media has been criticised to portray violence in ways which can have varying effect on the behaviour of those exposed to it. This study was therefore conducted to investigate the perception of the residents of Uitenhage on the media‘s portrayal of gender based violence against women and children. The mixed method of research was used to obtain data from the participants and respondents which were residents of Uitenhage, in the Eastern Cape, South Africa. Non-probability sampling in the form of purposive sampling was used to select the focus group participants while probability sampling in the form of simple random probability sampling was used to select the respondents with whom the questionnaires were administered to. Quantitative data analysis for questionnaires was done using descriptive statistics and findings were presented in form of tables and pie charts while qualitative data analysis for the focus group discussions was done using thematic analysis. A final sample of 257 valid responses were analysed, representing 80 percent response rate, three focus group discussions were also analysed. The study revealed that all the participants and respondents are exposed to more than one medium of mass communication, however participants and respondents opined that the media has both positive and negative effect on different individuals. The study also demonstrated that there is an association between people‘s exposure to the media and their violent behaviour which is attributed to the messages conveyed by the media. The study recommends amongst others that the media should take a more proactive approach to the issue of VAW. , Thesis (PhD) (Communication) -- University of Fort Hare, 2018
- Full Text:
- Date Issued: 2018
Implementation of the school nutrition programme in selected high schools in KwaZulu-Natal Province : implications on learners' nutrition education
- Authors: Mafugu, Tafirenyika
- Date: 2018
- Subjects: School children -- Nutrition -- KwaZulu-Natal School children -- Food -- South Africa -- KwaZulu-Natal Child welfare -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9637 , vital:34812
- Description: The study sought to: examine training, monitoring and support provided to NSNP stakeholders; establish what informs the procurement and preparation of the food; determine its nutritional value; identify challenges encountered in the implementation of the school nutritrition programme; and evaluate the implications of the NSNP on learners’ nutritional education in Pinetown district in South Africa. Underpinned by the pragmatic research paradigm, the study followed a mixed methods research approach which utilised a convergent parallel research design. A random sample of 108 learners and purposive samples of 32 different stakeholders participated in the study. Descriptive and inferential statistics were used to analyse quantitative data, while qualitative data were categorised into themes which were presented in tables and text. The two forms of data were merged at the interpretation phase through triangulation of results. The study found that some of the key stakeholders of NSNP were not adequately supported and trained, and that monitoring was only done regularly by the teacher coordinators. District field officers lacked adequate expertise to train stakeholders. Food was prepared following a menu which was not updated in some schools, and food handlers in two schools could not understand quantities on the menu. The suppliers used the menu for procurement of food. The observed mean intakes per child per day for energy, protein, total fat, cholesterol, dietary fibre, vitamin K and sodium were significantly lower than the expected mean nutrient intakes, while the intakes of all other nutrients were not significantly different statistically, from the expected nutrient intakes. The intakes of all nutrients were below the minimum of 30 percent of RDA which was recommended by the Department of Basic Education. Fruits were rarely supplied. Nutritional education was not adequately taught across the curriculum and most respondents were not aware of basic nutritional principles. Training stakeholders and early payment of the suppliers could significantly improve learners’ benefit from the programme. The study’s proposed framework of implementation of the school nutrition programme recommends ways to improve the implementation process, including the incorporation of nutrition education into the Life Orientation curriculum to enhance good food choices that curb prevalent nutrient disorders among South Africans.
- Full Text:
- Date Issued: 2018
- Authors: Mafugu, Tafirenyika
- Date: 2018
- Subjects: School children -- Nutrition -- KwaZulu-Natal School children -- Food -- South Africa -- KwaZulu-Natal Child welfare -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9637 , vital:34812
- Description: The study sought to: examine training, monitoring and support provided to NSNP stakeholders; establish what informs the procurement and preparation of the food; determine its nutritional value; identify challenges encountered in the implementation of the school nutritrition programme; and evaluate the implications of the NSNP on learners’ nutritional education in Pinetown district in South Africa. Underpinned by the pragmatic research paradigm, the study followed a mixed methods research approach which utilised a convergent parallel research design. A random sample of 108 learners and purposive samples of 32 different stakeholders participated in the study. Descriptive and inferential statistics were used to analyse quantitative data, while qualitative data were categorised into themes which were presented in tables and text. The two forms of data were merged at the interpretation phase through triangulation of results. The study found that some of the key stakeholders of NSNP were not adequately supported and trained, and that monitoring was only done regularly by the teacher coordinators. District field officers lacked adequate expertise to train stakeholders. Food was prepared following a menu which was not updated in some schools, and food handlers in two schools could not understand quantities on the menu. The suppliers used the menu for procurement of food. The observed mean intakes per child per day for energy, protein, total fat, cholesterol, dietary fibre, vitamin K and sodium were significantly lower than the expected mean nutrient intakes, while the intakes of all other nutrients were not significantly different statistically, from the expected nutrient intakes. The intakes of all nutrients were below the minimum of 30 percent of RDA which was recommended by the Department of Basic Education. Fruits were rarely supplied. Nutritional education was not adequately taught across the curriculum and most respondents were not aware of basic nutritional principles. Training stakeholders and early payment of the suppliers could significantly improve learners’ benefit from the programme. The study’s proposed framework of implementation of the school nutrition programme recommends ways to improve the implementation process, including the incorporation of nutrition education into the Life Orientation curriculum to enhance good food choices that curb prevalent nutrient disorders among South Africans.
- Full Text:
- Date Issued: 2018
Teachers' support of learners with attention deficit hyperactivity disorder (ADHD) in mainstream grade 10 classes : a case study
- Authors: Hendriks, Ivy Johleen
- Date: 2018
- Subjects: Attention-deficit-disordered children -- Education (Higher) Hyperactive children -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/9033 , vital:34184
- Description: Attention Deficit Hyperactivity Disorder (ADHD) affects between 5 – 7 percent of children in the United States and Europe, making it one of the most common child psychiatric diagnoses. ADHD currently affects approximately 3 – 5 percent of school-going children and adolescents in South Africa. Schools create multiple challenges for learners with ADHD who show classic symptoms of inattention, hyperactivity and impulsivity. These symptoms produce impairment across cognitive, behavioural and interpersonal domains of function. Symptoms frequently manifest in a school setting, thus teachers play a central role in reporting symptoms, advising parents to seek professional assessment and assisting children with ADHD to achieve academically and socially. In line with the Education White Paper 6 of 2001, teachers should not only support learners with ADHD, but need to help these learners to understand and accept themselves as learners. The Literature focus on teachers’ knowledge of the characteristic symptoms displayed by learners with ADHD; teachers’ role in identifying and referring learners with ADHD; challenges faced by teachers when teaching learners with ADHD as well as teaching strategies and classroom accommodations teachers employ to effectively support learners with ADHD. The research was undertaken as a qualitative case study with an interpretivist underpinning. Data was collected making use of open-ended questionnaires, semi structured interviews and an informal observation. Purposive sampling was used to identify 6 teachers from previously disadvantaged high schools, teaching either Mathematics or a Language. The findings of the study indicated that teachers in mainstream high schools do not possess adequate knowledge to identify and refer learners with ADHD. As assumed by the researcher, the teachers’ lack of knowledge leads to unsuitable teaching strategies and classroom accommodations. Their biggest challenge to effectively support learners with ADHD was a lack of support and knowledge.
- Full Text:
- Date Issued: 2018
- Authors: Hendriks, Ivy Johleen
- Date: 2018
- Subjects: Attention-deficit-disordered children -- Education (Higher) Hyperactive children -- Education (Higher)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/9033 , vital:34184
- Description: Attention Deficit Hyperactivity Disorder (ADHD) affects between 5 – 7 percent of children in the United States and Europe, making it one of the most common child psychiatric diagnoses. ADHD currently affects approximately 3 – 5 percent of school-going children and adolescents in South Africa. Schools create multiple challenges for learners with ADHD who show classic symptoms of inattention, hyperactivity and impulsivity. These symptoms produce impairment across cognitive, behavioural and interpersonal domains of function. Symptoms frequently manifest in a school setting, thus teachers play a central role in reporting symptoms, advising parents to seek professional assessment and assisting children with ADHD to achieve academically and socially. In line with the Education White Paper 6 of 2001, teachers should not only support learners with ADHD, but need to help these learners to understand and accept themselves as learners. The Literature focus on teachers’ knowledge of the characteristic symptoms displayed by learners with ADHD; teachers’ role in identifying and referring learners with ADHD; challenges faced by teachers when teaching learners with ADHD as well as teaching strategies and classroom accommodations teachers employ to effectively support learners with ADHD. The research was undertaken as a qualitative case study with an interpretivist underpinning. Data was collected making use of open-ended questionnaires, semi structured interviews and an informal observation. Purposive sampling was used to identify 6 teachers from previously disadvantaged high schools, teaching either Mathematics or a Language. The findings of the study indicated that teachers in mainstream high schools do not possess adequate knowledge to identify and refer learners with ADHD. As assumed by the researcher, the teachers’ lack of knowledge leads to unsuitable teaching strategies and classroom accommodations. Their biggest challenge to effectively support learners with ADHD was a lack of support and knowledge.
- Full Text:
- Date Issued: 2018
Analysis of the human HSP70-HSP90 organising protein (HOP) gene - characterisation of the promoter and identification of a novel isoform
- Authors: Mattison, Stacey
- Date: 2018
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62821 , vital:28296
- Description: Expected release date-April 2020
- Full Text:
- Date Issued: 2018
- Authors: Mattison, Stacey
- Date: 2018
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62821 , vital:28296
- Description: Expected release date-April 2020
- Full Text:
- Date Issued: 2018
The effectiveness of juvenile delinquents rehabilitation programmes in Zimbabwe : a case study of Harare Central Prison
- Authors: Nyakatawa, Rumbidzai
- Date: 2018
- Subjects: Juvenile delinquency Juvenile delinquents Rehabilitation
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/12436 , vital:39263
- Description: The Zimbabwe Prison and Correctional Services records show that there are around 300 children incarcerated every year. Most of these children commit crimes such as rape, murder, theft, possession of drugs due to issues like poverty, substance abuse, peer pressure and neglect. A number of these children face many forms of abuse in their homes, including physical, emotional, mental abuse as well as rape. The major aim of the study was to investigate the effectiveness of juvenile delinquents’ rehabilitation programmes at Harare Central Prison. The qualitative methodology was appropriate for this study because it gives in depth information through conducting interviews and focus groups with participants. The sampling procedure involved deliberate choice of an informant due to the qualities the informant possessed. A sample size of thirty-seven participants comprising sixteen juvenile delinquents, four social workers, five prison guards, five probation officers and seven community members, were selected for this study. Their perceptions provided baseline data that helped in gaining a deeper understanding of the juvenile rehabilitation programmes. Despite the findings, gaps remain in the current system, for instance children continue to spend prolonged periods of time in adult prisons while they await repatriation to institutions due to resource constraints, and the rehabilitation programmes have proved to be partially effective, yet at the same time the post rehabilitation programmes are not being provided to juveniles after their release from prison. Key recommendations include expanding the Pre-trial Diversion Programme to all the provinces as it has yielded results that benefit the child as well introduction of alternatives of institutionalisation.
- Full Text:
- Date Issued: 2018
- Authors: Nyakatawa, Rumbidzai
- Date: 2018
- Subjects: Juvenile delinquency Juvenile delinquents Rehabilitation
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/12436 , vital:39263
- Description: The Zimbabwe Prison and Correctional Services records show that there are around 300 children incarcerated every year. Most of these children commit crimes such as rape, murder, theft, possession of drugs due to issues like poverty, substance abuse, peer pressure and neglect. A number of these children face many forms of abuse in their homes, including physical, emotional, mental abuse as well as rape. The major aim of the study was to investigate the effectiveness of juvenile delinquents’ rehabilitation programmes at Harare Central Prison. The qualitative methodology was appropriate for this study because it gives in depth information through conducting interviews and focus groups with participants. The sampling procedure involved deliberate choice of an informant due to the qualities the informant possessed. A sample size of thirty-seven participants comprising sixteen juvenile delinquents, four social workers, five prison guards, five probation officers and seven community members, were selected for this study. Their perceptions provided baseline data that helped in gaining a deeper understanding of the juvenile rehabilitation programmes. Despite the findings, gaps remain in the current system, for instance children continue to spend prolonged periods of time in adult prisons while they await repatriation to institutions due to resource constraints, and the rehabilitation programmes have proved to be partially effective, yet at the same time the post rehabilitation programmes are not being provided to juveniles after their release from prison. Key recommendations include expanding the Pre-trial Diversion Programme to all the provinces as it has yielded results that benefit the child as well introduction of alternatives of institutionalisation.
- Full Text:
- Date Issued: 2018
A framework to address the shortage of registered nurses in South Africa in alignment with the national health insurance requirement
- Authors: Venturini, Ronwyn
- Date: 2018
- Subjects: Nursing -- South Africa , Nursing -- Manpower -- South Africa Nursing services -- South Africa -- Administration Skilled labor -- South Africa Labor supply -- South Africa Manpower planning -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/36782 , vital:34054
- Description: In South Africa, there is a dire need for good quality healthcare in the public and private sectors. To achieve the aforementioned, the shortage of medical personnel is of utmost concern and the ability to retain these qualified individuals an even greater dilemma. The Department of Health in South Africa has embarked on a National Health Insurance model they want to introduce similar to the first world countries such as the British and American systems whereby medical insurance is free for all and not a single citizen is left unattended in their time of need. The primary purpose of this study was to identify a framework that will enable the South African government to implement a successful National Health Insurance system. Key theoretical factors (remuneration and rewards, work climate, stress, job satisfaction, recognition and bedside nursing) were investigated to ascertain what the key contributors are regarding the shortage of registered nurses. The identification of pertinent factors will promote the retention of nurses, which represent the population of this study. A questionnaire was designed by the researcher to collect the data from the sample, which consisted of 99 registered nurses in both public and the private sectors in South Africa across the provinces namely Gauteng, Eastern Cape, Western Cape Kwa-Zulu Natal, Free State, Limpopo and North West. The data collection process included electronic and hard copies of the questionnaires that were administered using the self-selected sampling and snowball non-probability sampling strategies. Descriptive statistics were conducted on the empirical data collected; and inferential statistics in the form of multiple regression analysis was used to test the hypotheses formulated. The study found that recognition is the only contributor that is directly related to the shortage of registered nurses. The framework established should assist policy makers and government to understand the contributing factors exacerbating the shortage of registered nurses.
- Full Text:
- Date Issued: 2018
- Authors: Venturini, Ronwyn
- Date: 2018
- Subjects: Nursing -- South Africa , Nursing -- Manpower -- South Africa Nursing services -- South Africa -- Administration Skilled labor -- South Africa Labor supply -- South Africa Manpower planning -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/36782 , vital:34054
- Description: In South Africa, there is a dire need for good quality healthcare in the public and private sectors. To achieve the aforementioned, the shortage of medical personnel is of utmost concern and the ability to retain these qualified individuals an even greater dilemma. The Department of Health in South Africa has embarked on a National Health Insurance model they want to introduce similar to the first world countries such as the British and American systems whereby medical insurance is free for all and not a single citizen is left unattended in their time of need. The primary purpose of this study was to identify a framework that will enable the South African government to implement a successful National Health Insurance system. Key theoretical factors (remuneration and rewards, work climate, stress, job satisfaction, recognition and bedside nursing) were investigated to ascertain what the key contributors are regarding the shortage of registered nurses. The identification of pertinent factors will promote the retention of nurses, which represent the population of this study. A questionnaire was designed by the researcher to collect the data from the sample, which consisted of 99 registered nurses in both public and the private sectors in South Africa across the provinces namely Gauteng, Eastern Cape, Western Cape Kwa-Zulu Natal, Free State, Limpopo and North West. The data collection process included electronic and hard copies of the questionnaires that were administered using the self-selected sampling and snowball non-probability sampling strategies. Descriptive statistics were conducted on the empirical data collected; and inferential statistics in the form of multiple regression analysis was used to test the hypotheses formulated. The study found that recognition is the only contributor that is directly related to the shortage of registered nurses. The framework established should assist policy makers and government to understand the contributing factors exacerbating the shortage of registered nurses.
- Full Text:
- Date Issued: 2018
Yeast-baculovirus synergism: investigating mixed infections for improved management of the false codling moth, Thaumatotibia leucotreta
- Authors: Van der Merwe, Marcel
- Date: 2018
- Subjects: Cryptophlebia leucotreta , Baculoviruses , Yeast , Citrus Diseases and pests , Biological pest control agents , Pests Integrated control
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/62963 , vital:28347
- Description: Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae) or otherwise commonly known as the false codling moth is an indigenous pest of the citrus industry in southern Africa. The pest is highly significant as it impacts negatively on the export of fresh citrus fruits from South Africa to international markets. To control T. leucotreta in South Africa, an integrated pest management (IPM) programme has been implemented. One component of this programme is the baculovirus Cryptophlebia leucotreta granulovirus (CrleGV-SA) which has been formulated into the products Cryptogran™ and Cryptex®. It has previously been reported that there is a mutualistic association between Cydia pomonella (L.) (Lepidoptera: Tortricidae) also known as codling moth, and epiphytic yeasts. Cydia pomonella larval feeding galleries were colonised by yeasts and this, in turn, reduced larval mortality and enhanced larval development. It has been demonstrated in laboratory assays and field trials that combining yeast and brown cane sugar with Cydia pomonella granulovirus (CpGV) significantly increased larval mortality and lowered the proportion of injured apple fruit. This suggests that yeasts can enhance the effectiveness of an insect virus in managing pest larvae. In this study, we proposed to determine which species of yeast occur naturally in the digestive tract, frass and on the epidermis of T. leucotreta larvae and to examine whether any of these yeasts, when combined with the CrleGV-SA, have a synergistic effect in increasing mortality of T. leucotreta larvae. Firstly, Navel oranges infested with T. leucotreta larvae were collected from orchards in Sundays River Valley in Eastern Cape of South Africa. Larvae were extracted and analysed for the presence of yeast on their surface, or in their gut and frass. Four yeasts were isolated from T. leucotreta larvae and identified down to species level via PCR amplification and sequencing of internal transcribed spacer (ITS) region and D1/D2 domain of the large subunit (LSU) of rDNA region. These yeasts were isolated from the frass, epidermis and digestive tract of T. leucotreta larvae. The yeast isolates were identified as Meyerozyma caribbica, Pichia kluyveri, Pichia kudriavzevii and Hanseniaspora opuntiae. A yeast preference assay was conducted on female T. leucotreta moths to examine whether any of the isolated yeast species affected their oviposition preference. Navel oranges were inoculated with the isolated yeast species at a concentration of 6 × 108 cells.ml-1. The assay also included a Brewer’s yeast and distilled water control. Pichia kudriavzevii was shown to be the preferred yeast species for oviposition, as significantly more eggs were deposited on Navel oranges inoculated with this yeast compared to the other treatments. Lastly, a detached fruit bioassay was performed to evaluate the efficacy of mixing P. kudriavzevii with CrleGV-SA to enhance T. leucotreta larvae mortality. Pichia kudriavzevii was selected as it was demonstrated as having an effect on the oviposition preference of female T. leucotreta moths. The concentration at which P. kudriavzevii was applied remained the same as in the preference assay while CrleGV-SA was applied at lethal concentration required to kill 50 % of the population (9.31 × 107 OBs.ml-1). Although an increase in larval mortality was observed between CrleGV-SA being applied alone and the yeast/virus mixture, this result was determined not to be statistically significant. The experiments performed in this study provide a platform for further research into the application of a yeast-virus combination as a novel control option for T. leucotreta in the field. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2018
- Full Text:
- Date Issued: 2018
- Authors: Van der Merwe, Marcel
- Date: 2018
- Subjects: Cryptophlebia leucotreta , Baculoviruses , Yeast , Citrus Diseases and pests , Biological pest control agents , Pests Integrated control
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/62963 , vital:28347
- Description: Thaumatotibia leucotreta (Meyrick) (Lepidoptera: Tortricidae) or otherwise commonly known as the false codling moth is an indigenous pest of the citrus industry in southern Africa. The pest is highly significant as it impacts negatively on the export of fresh citrus fruits from South Africa to international markets. To control T. leucotreta in South Africa, an integrated pest management (IPM) programme has been implemented. One component of this programme is the baculovirus Cryptophlebia leucotreta granulovirus (CrleGV-SA) which has been formulated into the products Cryptogran™ and Cryptex®. It has previously been reported that there is a mutualistic association between Cydia pomonella (L.) (Lepidoptera: Tortricidae) also known as codling moth, and epiphytic yeasts. Cydia pomonella larval feeding galleries were colonised by yeasts and this, in turn, reduced larval mortality and enhanced larval development. It has been demonstrated in laboratory assays and field trials that combining yeast and brown cane sugar with Cydia pomonella granulovirus (CpGV) significantly increased larval mortality and lowered the proportion of injured apple fruit. This suggests that yeasts can enhance the effectiveness of an insect virus in managing pest larvae. In this study, we proposed to determine which species of yeast occur naturally in the digestive tract, frass and on the epidermis of T. leucotreta larvae and to examine whether any of these yeasts, when combined with the CrleGV-SA, have a synergistic effect in increasing mortality of T. leucotreta larvae. Firstly, Navel oranges infested with T. leucotreta larvae were collected from orchards in Sundays River Valley in Eastern Cape of South Africa. Larvae were extracted and analysed for the presence of yeast on their surface, or in their gut and frass. Four yeasts were isolated from T. leucotreta larvae and identified down to species level via PCR amplification and sequencing of internal transcribed spacer (ITS) region and D1/D2 domain of the large subunit (LSU) of rDNA region. These yeasts were isolated from the frass, epidermis and digestive tract of T. leucotreta larvae. The yeast isolates were identified as Meyerozyma caribbica, Pichia kluyveri, Pichia kudriavzevii and Hanseniaspora opuntiae. A yeast preference assay was conducted on female T. leucotreta moths to examine whether any of the isolated yeast species affected their oviposition preference. Navel oranges were inoculated with the isolated yeast species at a concentration of 6 × 108 cells.ml-1. The assay also included a Brewer’s yeast and distilled water control. Pichia kudriavzevii was shown to be the preferred yeast species for oviposition, as significantly more eggs were deposited on Navel oranges inoculated with this yeast compared to the other treatments. Lastly, a detached fruit bioassay was performed to evaluate the efficacy of mixing P. kudriavzevii with CrleGV-SA to enhance T. leucotreta larvae mortality. Pichia kudriavzevii was selected as it was demonstrated as having an effect on the oviposition preference of female T. leucotreta moths. The concentration at which P. kudriavzevii was applied remained the same as in the preference assay while CrleGV-SA was applied at lethal concentration required to kill 50 % of the population (9.31 × 107 OBs.ml-1). Although an increase in larval mortality was observed between CrleGV-SA being applied alone and the yeast/virus mixture, this result was determined not to be statistically significant. The experiments performed in this study provide a platform for further research into the application of a yeast-virus combination as a novel control option for T. leucotreta in the field. , Thesis (MSc) -- Faculty of Science, Biochemistry and Microbiology, 2018
- Full Text:
- Date Issued: 2018
The implementation of a push-pull programme for the control of Eldana saccharina (Lepidoptera: Pyralidae) in sugarcane in the coastal regions of Kwazulu-Natal, South Africa
- Authors: Mulcahy, Megan Marie
- Date: 2018
- Subjects: Pyralidae -- South Africa -- KwaZulu-Natal , Pests -- Integrated control , Sugarcane -- Diseases and pests -- South Africa -- KwaZulu-Natal , Stem borers -- Effect of habitat modification on -- South Africa -- KwaZulu-Natal , Insect-plant relationships -- South Africa -- KwaZulu-Natal
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63290 , vital:28390
- Description: Eldana saccharina, an indigenous lepidopteran stemborer, is considered the most damaging pest of sugarcane in South Africa. Researchers have advocated the use of an area-wide integrated pest management (AW-IPM) programme as a means of improving the control of this pest. A push-pull strategy was developed as a component of this AW-IPM approach. The push-pull strategy in sugarcane is a habitat management method of pest control that uses plants that are both repellent (Melinis Minutiflora) and attractive (Cyperus dives, Cyperus papyrus and Bt-maize) to E. saccharina. Previous research into push-pull has shown that this strategy is an effective tool for the control of E. saccharina. Push-pull has been implemented successfully in the Midlands North sugarcane growing region of KwaZulu-Natal (KZN), South Africa. Despite the proven efficacy of push-pull, very little push-pull research has been conducted in the coastal sugarcane growing regions of KZN, and adoption of this technology has been poor in these regions. Therefore, the aim of this research was to facilitate the implementation of push-pull for the management of E. saccharina in sugarcane in the coastal regions of KZN. This was done by focussing on on-farm field trials and farmer participatory research. On-farm push-pull field trials were conducted on five model farms in the North and South Coast sugarcane growing regions of KZN. High levels of E. saccharina were recorded during this study. The push-pull treatment sites showed a significant reduction of E. saccharina damage on four of the five farms used in the study. Mean percentage of stalks damaged decreased by up to 50 % in the presence of the repellent grass species, M. minutiflora. The number of E. saccharina found per 100 stalks also decreased significantly at these farms. The farm which did not show a significant reduction in E. saccharina populations or damage had low numbers of this pest in the sugarcane throughout the experiment. This demonstrates that push-pull is more effective in areas that have high levels of E. saccharina. Stem borer surveys in wetlands on sugarcane farms revealed that high numbers of E. saccharina were found within the pull plants, C. papyrus and C. dives, in comparison to the push-pull sites. This verifies that the pull plants do work efficiently to attract E. saccharina away from sugarcane. Additionally, eight parasitoids emerged from E. saccharina larvae collected in wetland sedges. The beneficial roles that push-pull plants play in attracting and maintaining natural enemies in the agroecosystem are discussed, and these findings further demonstrate the important ecosystem, and pest management services that wetlands provide on sugarcane farms. The success of the push-pull trials in this study show that this technology can be an effective tool for controlling E. saccharina in the coastal sugarcane growing regions. The timing of the planting of push-pull plants was shown to play a role in the efficacy of this technology. The study also confirmed that push-pull should be used as a component of AW-IPM in conjunction with good crop management practices. Surveys were undertaken to determine large-scale sugarcane growers' (LSGs) knowledge and perceptions of E. saccharina and other pests. Research regarding the farmers' perceptions of push- pull was also conducted to better understand the drivers and barriers to adoption of push-pull, and other new technologies. The surveys found that large-scale farmers in the coastal regions suffer from high infestations of E. saccharina. As such there is scope for the introduction of new pest management practices such as push-pull in this area. Farmers also demonstrated a good basic knowledge of E. saccharina and IPM. However, LSGs had a poor understanding of push-pull and how it works, as well as the plants that make up the push-pull system that is being implemented against E. saccharina in South Africa. A dearth in practical knowledge regarding the implementation of push-pull was seen as a major barrier to the adoption of this strategy, as was financial instability, farmer attitudes and poor institutional support. Farmers recommended collaboration amongst stakeholders, improved education, proof of the efficacy of push-pull and incentives as tools to improve the implementation of this strategy in the coastal sugarcane growing regions of KZN. Farmers preferred direct contact with extension personnel and experiential learning opportunities when acquiring information about push- pull and other new pest management practices. If opportunities for push-pull education are increased through direct contact with extension personnel, and through on-farm demonstrations, and if inputs are provided in the form of push-pull plants, it is likely that push-pull will succeed amongst coastal LSGs, especially since farmers had an overall positive attitude towards the technology. Surveys amongst small-scale sugarcane growers (SSGs) showed that sugarcane is important in the lives of these farmers. The SSGs perceive pests to be a major constraint to their farming systems, and they identified E. saccharina as a major pest of sugarcane. The farmers also demonstrated good knowledge of sugarcane pests and vegetable pests. However, SSGs lacked knowledge regarding pest management practices and beneficial insects. Extension and advisory services should to continue concentrating on pest management practices to educate SSGs on the variety and application of pest control strategies. SSGs were found to employ complex, diverse and integrated agricultural systems that are well-suited to the implementation of IPM technologies such as push-pull. Since insect pests act were found to be a major constraint to SSG sugarcane production, push-pull was deemed a feasible pest management strategy for coastal farmers and its implementation by SSGs should be further explored. SSGs in this study were also concerned about vegetable pests, therefore if push-pull can be adapted to help protect additional crops, adoption of this technology by small-scale growers will improve.
- Full Text:
- Date Issued: 2018
- Authors: Mulcahy, Megan Marie
- Date: 2018
- Subjects: Pyralidae -- South Africa -- KwaZulu-Natal , Pests -- Integrated control , Sugarcane -- Diseases and pests -- South Africa -- KwaZulu-Natal , Stem borers -- Effect of habitat modification on -- South Africa -- KwaZulu-Natal , Insect-plant relationships -- South Africa -- KwaZulu-Natal
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63290 , vital:28390
- Description: Eldana saccharina, an indigenous lepidopteran stemborer, is considered the most damaging pest of sugarcane in South Africa. Researchers have advocated the use of an area-wide integrated pest management (AW-IPM) programme as a means of improving the control of this pest. A push-pull strategy was developed as a component of this AW-IPM approach. The push-pull strategy in sugarcane is a habitat management method of pest control that uses plants that are both repellent (Melinis Minutiflora) and attractive (Cyperus dives, Cyperus papyrus and Bt-maize) to E. saccharina. Previous research into push-pull has shown that this strategy is an effective tool for the control of E. saccharina. Push-pull has been implemented successfully in the Midlands North sugarcane growing region of KwaZulu-Natal (KZN), South Africa. Despite the proven efficacy of push-pull, very little push-pull research has been conducted in the coastal sugarcane growing regions of KZN, and adoption of this technology has been poor in these regions. Therefore, the aim of this research was to facilitate the implementation of push-pull for the management of E. saccharina in sugarcane in the coastal regions of KZN. This was done by focussing on on-farm field trials and farmer participatory research. On-farm push-pull field trials were conducted on five model farms in the North and South Coast sugarcane growing regions of KZN. High levels of E. saccharina were recorded during this study. The push-pull treatment sites showed a significant reduction of E. saccharina damage on four of the five farms used in the study. Mean percentage of stalks damaged decreased by up to 50 % in the presence of the repellent grass species, M. minutiflora. The number of E. saccharina found per 100 stalks also decreased significantly at these farms. The farm which did not show a significant reduction in E. saccharina populations or damage had low numbers of this pest in the sugarcane throughout the experiment. This demonstrates that push-pull is more effective in areas that have high levels of E. saccharina. Stem borer surveys in wetlands on sugarcane farms revealed that high numbers of E. saccharina were found within the pull plants, C. papyrus and C. dives, in comparison to the push-pull sites. This verifies that the pull plants do work efficiently to attract E. saccharina away from sugarcane. Additionally, eight parasitoids emerged from E. saccharina larvae collected in wetland sedges. The beneficial roles that push-pull plants play in attracting and maintaining natural enemies in the agroecosystem are discussed, and these findings further demonstrate the important ecosystem, and pest management services that wetlands provide on sugarcane farms. The success of the push-pull trials in this study show that this technology can be an effective tool for controlling E. saccharina in the coastal sugarcane growing regions. The timing of the planting of push-pull plants was shown to play a role in the efficacy of this technology. The study also confirmed that push-pull should be used as a component of AW-IPM in conjunction with good crop management practices. Surveys were undertaken to determine large-scale sugarcane growers' (LSGs) knowledge and perceptions of E. saccharina and other pests. Research regarding the farmers' perceptions of push- pull was also conducted to better understand the drivers and barriers to adoption of push-pull, and other new technologies. The surveys found that large-scale farmers in the coastal regions suffer from high infestations of E. saccharina. As such there is scope for the introduction of new pest management practices such as push-pull in this area. Farmers also demonstrated a good basic knowledge of E. saccharina and IPM. However, LSGs had a poor understanding of push-pull and how it works, as well as the plants that make up the push-pull system that is being implemented against E. saccharina in South Africa. A dearth in practical knowledge regarding the implementation of push-pull was seen as a major barrier to the adoption of this strategy, as was financial instability, farmer attitudes and poor institutional support. Farmers recommended collaboration amongst stakeholders, improved education, proof of the efficacy of push-pull and incentives as tools to improve the implementation of this strategy in the coastal sugarcane growing regions of KZN. Farmers preferred direct contact with extension personnel and experiential learning opportunities when acquiring information about push- pull and other new pest management practices. If opportunities for push-pull education are increased through direct contact with extension personnel, and through on-farm demonstrations, and if inputs are provided in the form of push-pull plants, it is likely that push-pull will succeed amongst coastal LSGs, especially since farmers had an overall positive attitude towards the technology. Surveys amongst small-scale sugarcane growers (SSGs) showed that sugarcane is important in the lives of these farmers. The SSGs perceive pests to be a major constraint to their farming systems, and they identified E. saccharina as a major pest of sugarcane. The farmers also demonstrated good knowledge of sugarcane pests and vegetable pests. However, SSGs lacked knowledge regarding pest management practices and beneficial insects. Extension and advisory services should to continue concentrating on pest management practices to educate SSGs on the variety and application of pest control strategies. SSGs were found to employ complex, diverse and integrated agricultural systems that are well-suited to the implementation of IPM technologies such as push-pull. Since insect pests act were found to be a major constraint to SSG sugarcane production, push-pull was deemed a feasible pest management strategy for coastal farmers and its implementation by SSGs should be further explored. SSGs in this study were also concerned about vegetable pests, therefore if push-pull can be adapted to help protect additional crops, adoption of this technology by small-scale growers will improve.
- Full Text:
- Date Issued: 2018
Orí (Head) as an xxpression of Yorùbá aesthetic philosophy:
- Ajíbóyè, Olusegun, Fọlárànmí, Stephen, Umoru-Ọkẹ, Nanashaitu
- Authors: Ajíbóyè, Olusegun , Fọlárànmí, Stephen , Umoru-Ọkẹ, Nanashaitu
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146145 , vital:38499 , DOI https://doi.org/10.2478/mjss-2018-0115
- Description: Aesthetics was never a subject or a separate philosophy in the traditional philosophies of black Africa. This is however not a justification to conclude that it is nonexistent. Indeed, aesthetics is a day to day affair among Africans. There are criteria for aesthetic judgment among African societies which vary from one society to the other. The Yorùbá of Southwestern Nigeria are not different. This study sets out to examine how the Yorùbá make their aesthetic judgments and demonstrate their aesthetic philosophy in decorating their orí, which means head among the Yorùbá. The head receives special aesthetic attention because of its spiritual and biological importance. It is an expression of the practicalities of Yorùbá aesthetic values. Literature and field work has been of paramount aid to this study. The study uses photographs, works of art and visual illustrations to show the various ways the head is adorned and cared for among the Yoruba. It relied on Yoruba art and language as a tool of investigating the concept of ori and aesthetics. Yorùbá aesthetic values are practically demonstrable and deeply located in the Yorùbá societal, moral and ethical idealisms. It concludes that the spiritual importance of orí or its aesthetics has a connection which has been demonstratively established by the Yorùbá as epressed in the images and illustrations used in this paper.
- Full Text:
- Date Issued: 2018
- Authors: Ajíbóyè, Olusegun , Fọlárànmí, Stephen , Umoru-Ọkẹ, Nanashaitu
- Date: 2018
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/146145 , vital:38499 , DOI https://doi.org/10.2478/mjss-2018-0115
- Description: Aesthetics was never a subject or a separate philosophy in the traditional philosophies of black Africa. This is however not a justification to conclude that it is nonexistent. Indeed, aesthetics is a day to day affair among Africans. There are criteria for aesthetic judgment among African societies which vary from one society to the other. The Yorùbá of Southwestern Nigeria are not different. This study sets out to examine how the Yorùbá make their aesthetic judgments and demonstrate their aesthetic philosophy in decorating their orí, which means head among the Yorùbá. The head receives special aesthetic attention because of its spiritual and biological importance. It is an expression of the practicalities of Yorùbá aesthetic values. Literature and field work has been of paramount aid to this study. The study uses photographs, works of art and visual illustrations to show the various ways the head is adorned and cared for among the Yoruba. It relied on Yoruba art and language as a tool of investigating the concept of ori and aesthetics. Yorùbá aesthetic values are practically demonstrable and deeply located in the Yorùbá societal, moral and ethical idealisms. It concludes that the spiritual importance of orí or its aesthetics has a connection which has been demonstratively established by the Yorùbá as epressed in the images and illustrations used in this paper.
- Full Text:
- Date Issued: 2018
Enhanced nonlinear optical response of benzothiazole substituted ball-type phthalocyanines in the presence of metallic nanoparticles
- Nwaji, Njemuwa, Mack, John, Nyokong, Tebello
- Authors: Nwaji, Njemuwa , Mack, John , Nyokong, Tebello
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/188149 , vital:44727 , xlink:href="https://doi.org/10.1016/j.optmat.2018.05.052"
- Description: The synthesis of zinc-zinc, gallium-gallium and indium-indium ball-type phthalocyanines (complexes 4, 5 and 6) and the surface assembly of the complexes onto metallic gold and silver nanoparticles are reported in this work. Furthermore, their photophysical and nonlinear optical dynamics were investigated. Decreases in the fluorescence quantum yields with a corresponding increase in the triplet quantum yields of the nanoconjugates in comparison to complexes 4, 5 and 6 alone were observed. The mechanism of strong reverse saturable absorption observed was found to be predominantly dependent on excited state absorption. The optical limiting thresholds range from 0.09 to 0.19 J/cm2. Enhanced triplet parameters and nonlinear optical responses were found when the complexes were conjugated to metallic nanoparticles.
- Full Text:
- Date Issued: 2018
- Authors: Nwaji, Njemuwa , Mack, John , Nyokong, Tebello
- Date: 2018
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/188149 , vital:44727 , xlink:href="https://doi.org/10.1016/j.optmat.2018.05.052"
- Description: The synthesis of zinc-zinc, gallium-gallium and indium-indium ball-type phthalocyanines (complexes 4, 5 and 6) and the surface assembly of the complexes onto metallic gold and silver nanoparticles are reported in this work. Furthermore, their photophysical and nonlinear optical dynamics were investigated. Decreases in the fluorescence quantum yields with a corresponding increase in the triplet quantum yields of the nanoconjugates in comparison to complexes 4, 5 and 6 alone were observed. The mechanism of strong reverse saturable absorption observed was found to be predominantly dependent on excited state absorption. The optical limiting thresholds range from 0.09 to 0.19 J/cm2. Enhanced triplet parameters and nonlinear optical responses were found when the complexes were conjugated to metallic nanoparticles.
- Full Text:
- Date Issued: 2018