The WTO agreement on technical barriers to trade : a critical appraisal of its implementation within the Southern African Development Community
- Authors: Chimeri, Vongai
- Date: 2017
- Subjects: Tariff -- Law and legislation Non-tariff trade barriers -- Law and legislation Foreign trade regulation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: http://hdl.handle.net/10353/2855 , vital:28108
- Description: The World Trade Organisation Agreement on Technical Barriers to Trade (TBT Agreement) was crafted with the aim of ensuring that technical regulations, standards and conformity assessment procedure do not constitute unnecessary obstacles to international trade. Southern African Development Community (SADC) countries have since ratified this Agreement and took a step further to incorporate its principles into the Technical Barriers to Trade Annex to the SADC Protocol on Trade. Despite this effort, SADC countries are still grappling with implementing the TBT Agreement in their domestic frameworks. Consequently, technical barriers to trade have become impediments to both regional and international trade. It is in this context that this study aims to examine the implementation of the TBT Agreement within the SADC. The study answers the question what are the challenges facing SADC Member states to fully implement the TBT Agreement? The study demonstrates that SADC Member face challenges which include of lack adequate resources, technical expertise and enforcement mechanisms to effectively implement the TBT Agreement. In the finality, the study recommends SADC Member states to deepen regional integration in order to collaborate on matters relating to technical barriers to trade within the region. Member states should also share information and learn from the experiences of other countries on how to effectively implement the TBT Agreement. Further, government officials should be educated on trade-friendly regulations that do not compromise on the principles of the TBT Agreement. To this end, regulatory impact assessments should be established in order to assess the trade effects of both new and old regulations. Effective enforcement mechanisms should also be introduced in order to coerce Member states to comply with their regional obligations. By effecting these recommendations, SADC states have the opportunity to eradicate technical barriers to trade thereby increasing both regional and international trade.
- Full Text:
- Date Issued: 2017
- Authors: Chimeri, Vongai
- Date: 2017
- Subjects: Tariff -- Law and legislation Non-tariff trade barriers -- Law and legislation Foreign trade regulation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: http://hdl.handle.net/10353/2855 , vital:28108
- Description: The World Trade Organisation Agreement on Technical Barriers to Trade (TBT Agreement) was crafted with the aim of ensuring that technical regulations, standards and conformity assessment procedure do not constitute unnecessary obstacles to international trade. Southern African Development Community (SADC) countries have since ratified this Agreement and took a step further to incorporate its principles into the Technical Barriers to Trade Annex to the SADC Protocol on Trade. Despite this effort, SADC countries are still grappling with implementing the TBT Agreement in their domestic frameworks. Consequently, technical barriers to trade have become impediments to both regional and international trade. It is in this context that this study aims to examine the implementation of the TBT Agreement within the SADC. The study answers the question what are the challenges facing SADC Member states to fully implement the TBT Agreement? The study demonstrates that SADC Member face challenges which include of lack adequate resources, technical expertise and enforcement mechanisms to effectively implement the TBT Agreement. In the finality, the study recommends SADC Member states to deepen regional integration in order to collaborate on matters relating to technical barriers to trade within the region. Member states should also share information and learn from the experiences of other countries on how to effectively implement the TBT Agreement. Further, government officials should be educated on trade-friendly regulations that do not compromise on the principles of the TBT Agreement. To this end, regulatory impact assessments should be established in order to assess the trade effects of both new and old regulations. Effective enforcement mechanisms should also be introduced in order to coerce Member states to comply with their regional obligations. By effecting these recommendations, SADC states have the opportunity to eradicate technical barriers to trade thereby increasing both regional and international trade.
- Full Text:
- Date Issued: 2017
An investigation into the nature of grade 4 learners’ evolving mathematics learning dispositions: a case study of 3 learners participating in an after school mathematics club
- Authors: Hewana, Diliza Ronald
- Date: 2014
- Subjects: Mathematics -- Study and teaching (Elementary) -- Case studies , Mathematics -- Study and teaching (Elementary) -- Psychological aspects , After-school programs -- South Africa -- Grahamstown , Students -- Attitudes -- Case studies , Education, Elementary -- South Africa -- Grahamstown
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1983 , http://hdl.handle.net/10962/d1013140
- Description: Through a qualitative case study approach this research investigated the nature of three Grade 4 learners’ mathematical learning dispositions. It further explored how these dispositions evolve within the context of their participation in a weekly after school mathematics club over time. Of particular significance the research drew on the dispositional frameworks of Kilpatrick, Swafford and Findell’s (2001) and Carr & Claxton (2002) and pointed to ways in which these framework can be usefully brought together to provide a richer picture of learning dispositions. Kilpatrick, Swafford and Findell’s (2001) framework of mathematical proficiency involves five interrelated strands of which productive disposition is the fifth strand and largely underresearched (Graven, 2012). This strand is defined as ‘the tendency to see sense in mathematics, to perceive it as both useful and worthwhile, to believe that steady effort in learning mathematics pays off, and to see oneself as an effective learner and doer of mathematics’ (Kilpatrick, Swafford and Findell, 2001, p. 131). Carr & Claxton (2002) similarly argue for the importance of learning dispositions and point to the importance of resilience, playfulness and resourcefulness as three key indicators. The research outlines findings of the three case study learners in terms of data obtained from a questionnaire and interview about students’ learning dispositions. The interview asked learners various questions including for example, complete the sentence ‘Maths is…’, describe an effective learner of mathematics and say what you do if you don’t know an answer. The instrument was first administered orally and learners were asked to write their answers (in May 2012) and a year later it was administered as an interview by the club facilitator (in May 2013). While there is the limitation of comparison due to the different ways in which learners responded in 2012 (written) and 2013 (oral) the shifting nature of responses in certain respects provides some indication of shifts towards increasingly productive dispositions. Additionally the research analysed detailed transcripts of video recordings of several club sessions over a five-month period. Findings suggest ways of extending dispositional frameworks and that learners have restricted dispositions particularly in terms of sense making and resourcefulness across time. The findings also suggest shifts in dispositions over time especially in terms of seeing steady effort as paying off.
- Full Text:
- Date Issued: 2014
- Authors: Hewana, Diliza Ronald
- Date: 2014
- Subjects: Mathematics -- Study and teaching (Elementary) -- Case studies , Mathematics -- Study and teaching (Elementary) -- Psychological aspects , After-school programs -- South Africa -- Grahamstown , Students -- Attitudes -- Case studies , Education, Elementary -- South Africa -- Grahamstown
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1983 , http://hdl.handle.net/10962/d1013140
- Description: Through a qualitative case study approach this research investigated the nature of three Grade 4 learners’ mathematical learning dispositions. It further explored how these dispositions evolve within the context of their participation in a weekly after school mathematics club over time. Of particular significance the research drew on the dispositional frameworks of Kilpatrick, Swafford and Findell’s (2001) and Carr & Claxton (2002) and pointed to ways in which these framework can be usefully brought together to provide a richer picture of learning dispositions. Kilpatrick, Swafford and Findell’s (2001) framework of mathematical proficiency involves five interrelated strands of which productive disposition is the fifth strand and largely underresearched (Graven, 2012). This strand is defined as ‘the tendency to see sense in mathematics, to perceive it as both useful and worthwhile, to believe that steady effort in learning mathematics pays off, and to see oneself as an effective learner and doer of mathematics’ (Kilpatrick, Swafford and Findell, 2001, p. 131). Carr & Claxton (2002) similarly argue for the importance of learning dispositions and point to the importance of resilience, playfulness and resourcefulness as three key indicators. The research outlines findings of the three case study learners in terms of data obtained from a questionnaire and interview about students’ learning dispositions. The interview asked learners various questions including for example, complete the sentence ‘Maths is…’, describe an effective learner of mathematics and say what you do if you don’t know an answer. The instrument was first administered orally and learners were asked to write their answers (in May 2012) and a year later it was administered as an interview by the club facilitator (in May 2013). While there is the limitation of comparison due to the different ways in which learners responded in 2012 (written) and 2013 (oral) the shifting nature of responses in certain respects provides some indication of shifts towards increasingly productive dispositions. Additionally the research analysed detailed transcripts of video recordings of several club sessions over a five-month period. Findings suggest ways of extending dispositional frameworks and that learners have restricted dispositions particularly in terms of sense making and resourcefulness across time. The findings also suggest shifts in dispositions over time especially in terms of seeing steady effort as paying off.
- Full Text:
- Date Issued: 2014
Environmental education in primary schools in Bophuthatswana : a case study in curriculum implementation
- Authors: Shongwe, Doctor Petrus
- Date: 1992
- Subjects: Environmental education -- South Africa -- Bophuthatswana , Primary school teaching -- Research -- South Africa -- Bophuthatswana
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1514 , http://hdl.handle.net/10962/d1003396
- Description: This study examines the extent to which teachers in Senior Primary Schools who have obtained a professional qualification in Environmental Education, implement Environmental Education in their schools. It also explores factors which influence the implementation of Environmental Education at the Senior Primary School. Teachers who had qualified from Tlhabane and Hebron Colleges of Education were interviewed as were the principals of their schools and some of the lecturers who had taught them Environmental Education. The implementation of Environmental Education was addressed by means of comparing the teacher's responses with Primary Environmental Education Teacher Competencies as suggested by Glasgow and Robinson (1986) and Lahiry et al (1988). The information was deduced from the teachers responses from semi-structured interviews and were qualitatively analysed.
- Full Text:
- Date Issued: 1992
- Authors: Shongwe, Doctor Petrus
- Date: 1992
- Subjects: Environmental education -- South Africa -- Bophuthatswana , Primary school teaching -- Research -- South Africa -- Bophuthatswana
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1514 , http://hdl.handle.net/10962/d1003396
- Description: This study examines the extent to which teachers in Senior Primary Schools who have obtained a professional qualification in Environmental Education, implement Environmental Education in their schools. It also explores factors which influence the implementation of Environmental Education at the Senior Primary School. Teachers who had qualified from Tlhabane and Hebron Colleges of Education were interviewed as were the principals of their schools and some of the lecturers who had taught them Environmental Education. The implementation of Environmental Education was addressed by means of comparing the teacher's responses with Primary Environmental Education Teacher Competencies as suggested by Glasgow and Robinson (1986) and Lahiry et al (1988). The information was deduced from the teachers responses from semi-structured interviews and were qualitatively analysed.
- Full Text:
- Date Issued: 1992
A comparative analysis of the phonological acquisition of consonants in the speech of pre-school age isiXhosa and English-speaking children in selected schools in the East London area
- Authors: Myoli, Ndileka
- Date: 2014
- Language: English
- Type: Thesis , Masters , MA (African Languages)
- Identifier: vital:11151 , http://hdl.handle.net/10353/d1015437
- Description: The problems of reading and incomprehension found in South African schools are often linked to children‟s differences of phonological acquisition rates and the articulation of consonants. This is according to the report of the Impact Study of the System Method for Reading Success study (SMRS) of 2009. This problem has always been associated with the racial inequalities that have previously ruled the South African education system. An understanding of the existence of the differences in children‟s articulation of consonants between the English-speaking and the isiXhosa-speaking children may lead to further understanding of the causes of such differences and the application of strategies that are aimed at remedying that situation. While many studies have been conducted in the area of language acquisition, this study found it necessary to contribute further to this debate. This study investigated the different rates of consonant articulation between pre-school-going Englishspeaking and isiXhosa-speaking children of 2-6 years of age. The main aim was to establish which of these two cohorts have early phonological acquisition of consonants and, therefore, master their articulation and why. 26 children from the two pre-schools within the East London directorate weren sampled, 13 consisting of females and males from each of the two pre-primary schools. This study used informal interviews and case study as the means of data collection as well as a case study as its investigation strategy. Children‟s speech utterances were recorded in order to analyse and compare with respect to order of acquisition, types of errors as well as the ages at which consonants were acquired. This study ensured a high degree of validity as well as giving due consideration to ethical matters in order to ensure the reliability of the results. The problems of reading and incomprehension found in South African schools are often linked to children‟s differences of phonological acquisition rates and the articulation of consonants. This is according to the report of the Impact Study of the System Method for Reading Success study (SMRS) of 2009. This problem has always been associated with the racial inequalities that have previously ruled the South African education system. An understanding of the existence of the differences in children‟s articulation of consonants between the English-speaking and the isiXhosa-speaking children may lead to further understanding of the causes of such differences and the application of strategies that are aimed at remedying that situation. While many studies have been conducted in the area of language acquisition, this study found it necessary to contribute further to this debate. This study investigated the different rates of consonant articulation between pre-school-going Englishspeaking and isiXhosa-speaking children of 2-6 years of age. The main aim was to establish which of these two cohorts have early phonological acquisition of consonants and, therefore, master their articulation and why. 26 children from the two pre-schools within the East London directorate weren sampled, 13 consisting of females and males from each of the two pre-primary schools. This study used informal interviews and case study as the means of data collection as well as a case study as its investigation strategy. Children‟s speech utterances were recorded in order to analyse and compare with respect to order of acquisition, types of errors as well as the ages at which consonants were acquired. This study ensured a high degree of validity as well as giving due consideration to ethical matters in order to ensure the reliability of the results. The study found that isiXhosa speaking children have earlier consonant acquisition than English-speaking children do. While that is the case, the study also found that English-speaking children‟s rates of phonological acquisition accelerated from the age of 4 years to the age of 6 years much more than the isiXhosa-speaking children of the same age could do. The implications of these results to education stakeholders, particularly the teachers and other related professionals who deal with children with articulation disorders on a daily basis, will create an understanding as well as an awareness of the existence of such problems. Policies formulated will have to take the existence of articulation disorders into consideration. The distribution of resources relevant to the needs of children will include and cater for children with such disorders. Further research is recommended to investigate more around this area of study to a point where solutions for the existing differences of articulation of consonants for one group of children over another are realised.The study found that isiXhosa speaking children have earlier consonant acquisition than English-speaking children do. While that is the case, the study also found that English-speaking children‟s rates of phonological acquisition accelerated from the age of 4 years to the age of 6 years much more than the isiXhosa-speaking children of the same age could do. The implications of these results to education stakeholders, particularly the teachers and other related professionals who deal with children with articulation disorders on a daily basis, will create an understanding as well as an awareness of the existence of such problems. Policies formulated will have to take the existence of articulation disorders into consideration. The distribution of resources relevant to the needs of children will include and cater for children with such disorders. Further research is recommended to investigate more around this area of study to a point where solutions for the existing differences of articulation of consonants for one group of children over another are realised.
- Full Text:
- Date Issued: 2014
- Authors: Myoli, Ndileka
- Date: 2014
- Language: English
- Type: Thesis , Masters , MA (African Languages)
- Identifier: vital:11151 , http://hdl.handle.net/10353/d1015437
- Description: The problems of reading and incomprehension found in South African schools are often linked to children‟s differences of phonological acquisition rates and the articulation of consonants. This is according to the report of the Impact Study of the System Method for Reading Success study (SMRS) of 2009. This problem has always been associated with the racial inequalities that have previously ruled the South African education system. An understanding of the existence of the differences in children‟s articulation of consonants between the English-speaking and the isiXhosa-speaking children may lead to further understanding of the causes of such differences and the application of strategies that are aimed at remedying that situation. While many studies have been conducted in the area of language acquisition, this study found it necessary to contribute further to this debate. This study investigated the different rates of consonant articulation between pre-school-going Englishspeaking and isiXhosa-speaking children of 2-6 years of age. The main aim was to establish which of these two cohorts have early phonological acquisition of consonants and, therefore, master their articulation and why. 26 children from the two pre-schools within the East London directorate weren sampled, 13 consisting of females and males from each of the two pre-primary schools. This study used informal interviews and case study as the means of data collection as well as a case study as its investigation strategy. Children‟s speech utterances were recorded in order to analyse and compare with respect to order of acquisition, types of errors as well as the ages at which consonants were acquired. This study ensured a high degree of validity as well as giving due consideration to ethical matters in order to ensure the reliability of the results. The problems of reading and incomprehension found in South African schools are often linked to children‟s differences of phonological acquisition rates and the articulation of consonants. This is according to the report of the Impact Study of the System Method for Reading Success study (SMRS) of 2009. This problem has always been associated with the racial inequalities that have previously ruled the South African education system. An understanding of the existence of the differences in children‟s articulation of consonants between the English-speaking and the isiXhosa-speaking children may lead to further understanding of the causes of such differences and the application of strategies that are aimed at remedying that situation. While many studies have been conducted in the area of language acquisition, this study found it necessary to contribute further to this debate. This study investigated the different rates of consonant articulation between pre-school-going Englishspeaking and isiXhosa-speaking children of 2-6 years of age. The main aim was to establish which of these two cohorts have early phonological acquisition of consonants and, therefore, master their articulation and why. 26 children from the two pre-schools within the East London directorate weren sampled, 13 consisting of females and males from each of the two pre-primary schools. This study used informal interviews and case study as the means of data collection as well as a case study as its investigation strategy. Children‟s speech utterances were recorded in order to analyse and compare with respect to order of acquisition, types of errors as well as the ages at which consonants were acquired. This study ensured a high degree of validity as well as giving due consideration to ethical matters in order to ensure the reliability of the results. The study found that isiXhosa speaking children have earlier consonant acquisition than English-speaking children do. While that is the case, the study also found that English-speaking children‟s rates of phonological acquisition accelerated from the age of 4 years to the age of 6 years much more than the isiXhosa-speaking children of the same age could do. The implications of these results to education stakeholders, particularly the teachers and other related professionals who deal with children with articulation disorders on a daily basis, will create an understanding as well as an awareness of the existence of such problems. Policies formulated will have to take the existence of articulation disorders into consideration. The distribution of resources relevant to the needs of children will include and cater for children with such disorders. Further research is recommended to investigate more around this area of study to a point where solutions for the existing differences of articulation of consonants for one group of children over another are realised.The study found that isiXhosa speaking children have earlier consonant acquisition than English-speaking children do. While that is the case, the study also found that English-speaking children‟s rates of phonological acquisition accelerated from the age of 4 years to the age of 6 years much more than the isiXhosa-speaking children of the same age could do. The implications of these results to education stakeholders, particularly the teachers and other related professionals who deal with children with articulation disorders on a daily basis, will create an understanding as well as an awareness of the existence of such problems. Policies formulated will have to take the existence of articulation disorders into consideration. The distribution of resources relevant to the needs of children will include and cater for children with such disorders. Further research is recommended to investigate more around this area of study to a point where solutions for the existing differences of articulation of consonants for one group of children over another are realised.
- Full Text:
- Date Issued: 2014
An enquiry into some present-day attitudes in art education and their relationship to the current alienation of artist from society
- Authors: Rodger, John Neil
- Date: 1973
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:21146 , http://hdl.handle.net/10962/6574
- Description: From Introduction: "We can't teach these kids anything, man, they are so pure and unspoiled. Anything we show them or any discipline we impose upon them will only corrupt their purity. It's best if they just stay home and do their own thing”. "If your instructor says he knows what art is, watch out.” These two statements, the first by an instructor at a prominent New York art school, the second by one of America's respected critics, are the sort of talk one might expect to hear at any gathering of the avent-garde . To hear them said in and about the art school puts things in a different light. They are indicative -of the sort of thing that is preached and practised by a sufficient proportion of the art- educational force in the Western world to constitute a crisis unparalleled in the entire history of art education. Unopposed, such views must rapidly spell death for the institution. They must also, if they reached the proportions their authors appear to hope for, ensure a universal visual illiteracy unequalled in any other age. Of course statements like this, archly delivered by the very people who would suffer the most immediate loss at their implementation, are not at all true reflections of the whole state of art education in our time, or those people would simply not be in a position to make them. There are a great many people in the profession who would wholeheartedly reject such statements, and this faction is by no means confined to the older members.
- Full Text:
- Date Issued: 1973
- Authors: Rodger, John Neil
- Date: 1973
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:21146 , http://hdl.handle.net/10962/6574
- Description: From Introduction: "We can't teach these kids anything, man, they are so pure and unspoiled. Anything we show them or any discipline we impose upon them will only corrupt their purity. It's best if they just stay home and do their own thing”. "If your instructor says he knows what art is, watch out.” These two statements, the first by an instructor at a prominent New York art school, the second by one of America's respected critics, are the sort of talk one might expect to hear at any gathering of the avent-garde . To hear them said in and about the art school puts things in a different light. They are indicative -of the sort of thing that is preached and practised by a sufficient proportion of the art- educational force in the Western world to constitute a crisis unparalleled in the entire history of art education. Unopposed, such views must rapidly spell death for the institution. They must also, if they reached the proportions their authors appear to hope for, ensure a universal visual illiteracy unequalled in any other age. Of course statements like this, archly delivered by the very people who would suffer the most immediate loss at their implementation, are not at all true reflections of the whole state of art education in our time, or those people would simply not be in a position to make them. There are a great many people in the profession who would wholeheartedly reject such statements, and this faction is by no means confined to the older members.
- Full Text:
- Date Issued: 1973
Investigating the impact of brand reputation on brand architecture strategies : a study on a South African automotive company
- Authors: Waddington, Andrew John
- Date: 2012
- Subjects: Branding (Marketing) -- Case studies Automobile industry and trade -- South Africa -- Case studies Toyota Jidōsha Kōgyō Kabushiki Kaisha -- Case studies Automobiles -- Marketing -- Case studies Product management -- Case studies Branding (Marketing) -- Management -- Case studies Corporate image -- Management -- Case studies Brand name products -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1179 , http://hdl.handle.net/10962/d1002796
- Description: The brand architecture of an organisation has become increasingly important to global management and marketing professionals, as it deals with structures and designs of brands which are constantly influenced by a changing environment. The market realities and changes brands face continuously impact the reputation of the brand, which is critical to sustain competitive advantage. The primary purpose of the study was to investigate the impact brand reputation has on brand architecture strategies, and an automotive company was chosen as the focus of the research. This research aims to help managers, marketers and brand owners make informative decisions regarding the brand architecture of a company. A quantitative content analysis methodology was used along with a webpage keyword counting application (WebWords). The application was used based on the principles outlined by Corporate Brand and Reputation Analysis (COBRA), which uses a four step progressive filtering process in filtering traditional and consumer generated media. The results from WebWords were then aligned to the brand architecture strategies from the brand relationship spectrum (BRS) to gain insight as to which of the strategies from the BRS were most vulnerable to reputational damage. The study found that the branded house and sub-brand strategies were most vulnerable to reputational damage based on the number reputational hits received. The connection between the master brand and the sub-brands could cause both brands to be affected should any reputational issues arise.
- Full Text:
- Date Issued: 2012
- Authors: Waddington, Andrew John
- Date: 2012
- Subjects: Branding (Marketing) -- Case studies Automobile industry and trade -- South Africa -- Case studies Toyota Jidōsha Kōgyō Kabushiki Kaisha -- Case studies Automobiles -- Marketing -- Case studies Product management -- Case studies Branding (Marketing) -- Management -- Case studies Corporate image -- Management -- Case studies Brand name products -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1179 , http://hdl.handle.net/10962/d1002796
- Description: The brand architecture of an organisation has become increasingly important to global management and marketing professionals, as it deals with structures and designs of brands which are constantly influenced by a changing environment. The market realities and changes brands face continuously impact the reputation of the brand, which is critical to sustain competitive advantage. The primary purpose of the study was to investigate the impact brand reputation has on brand architecture strategies, and an automotive company was chosen as the focus of the research. This research aims to help managers, marketers and brand owners make informative decisions regarding the brand architecture of a company. A quantitative content analysis methodology was used along with a webpage keyword counting application (WebWords). The application was used based on the principles outlined by Corporate Brand and Reputation Analysis (COBRA), which uses a four step progressive filtering process in filtering traditional and consumer generated media. The results from WebWords were then aligned to the brand architecture strategies from the brand relationship spectrum (BRS) to gain insight as to which of the strategies from the BRS were most vulnerable to reputational damage. The study found that the branded house and sub-brand strategies were most vulnerable to reputational damage based on the number reputational hits received. The connection between the master brand and the sub-brands could cause both brands to be affected should any reputational issues arise.
- Full Text:
- Date Issued: 2012
Challenges facing school management teams in the general education and training band schools untitles
- Authors: Mapisa, Bafundi Zealous
- Date: 2011
- Subjects: School management -- Education and training
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18423 , http://hdl.handle.net/11260/d1006923
- Description: During the apartheid era, that is, before 1994, principals tended to regard schools as their properties. Principals were expected to manage schools on their own without consulting the rest of the staff. From 1994 with the advent of a new political era, South Africa ended up having one National Education System. That system came up with many changes. In the new education system, the management of the school was taken from being the principal‟s duty only, to the responsibility of a management team which is referred to as the school management team (SMT). Because of the democratic nature of the SMT, it is required that educators work co-operatively as a team. The researcher has observed that this has been a challenge in some schools where principals resisted change. On the other hand, principals of schools are facing challenges due to a lack of cooperation amongst their subordinates. The establishment of SMTs does not nullify the authority of the school principal but the challenge that lies therein is that each member of the SMT must play his or her role properly. The purpose of this study was to explore the challenges facing SMT members in the GET band schools of Circuit 2 in Centane. A qualitative investigation was undertaken with the purpose in mind to develop a better understanding of the challenges facing SMTs in Circuit 2. This study was undertaken among 5 schools in Circuit 2 in Centane which falls under Butterworth District. The researcher used convenience sampling in selecting the SMTs of schools that would participate in this research study. Due to the fact that the researcher is a principal in one of the schools in Circuit 2 he could obtain easy access to SMTs of other schools in the Circuit. The following stakeholders were identified and participated in the selected schools: principal, deputy principal and Head of Department. Qualitative data were collected through semi- structured interviews. The study was framed within the interpretive approach, and sought to unpack the perceptions of SMT members with regard to team-management . An interpretive paradigm made it possible for the researcher to gain an in-depth understanding of SMT members‟ perceptions of team-management within their contexts. The outcomes pointed to several challenges ranging from the SMT terms of reference, cooperation, sources of support and stress as a result of the work overload involved. Based on the findings, SMTs have brought the phenomenon of cooperation to the fore, and cooperation may be perceived to have many advantages. However, in order for the SMTs to play a meaningful role in curriculum management and governance issues, there is a need for them to be conversant with issues and kept abreast of developments in education as a system. It is therefore recommended that members of the SMT be exposed to continuing professional training and development in the aforementioned governance areas.
- Full Text:
- Date Issued: 2011
- Authors: Mapisa, Bafundi Zealous
- Date: 2011
- Subjects: School management -- Education and training
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18423 , http://hdl.handle.net/11260/d1006923
- Description: During the apartheid era, that is, before 1994, principals tended to regard schools as their properties. Principals were expected to manage schools on their own without consulting the rest of the staff. From 1994 with the advent of a new political era, South Africa ended up having one National Education System. That system came up with many changes. In the new education system, the management of the school was taken from being the principal‟s duty only, to the responsibility of a management team which is referred to as the school management team (SMT). Because of the democratic nature of the SMT, it is required that educators work co-operatively as a team. The researcher has observed that this has been a challenge in some schools where principals resisted change. On the other hand, principals of schools are facing challenges due to a lack of cooperation amongst their subordinates. The establishment of SMTs does not nullify the authority of the school principal but the challenge that lies therein is that each member of the SMT must play his or her role properly. The purpose of this study was to explore the challenges facing SMT members in the GET band schools of Circuit 2 in Centane. A qualitative investigation was undertaken with the purpose in mind to develop a better understanding of the challenges facing SMTs in Circuit 2. This study was undertaken among 5 schools in Circuit 2 in Centane which falls under Butterworth District. The researcher used convenience sampling in selecting the SMTs of schools that would participate in this research study. Due to the fact that the researcher is a principal in one of the schools in Circuit 2 he could obtain easy access to SMTs of other schools in the Circuit. The following stakeholders were identified and participated in the selected schools: principal, deputy principal and Head of Department. Qualitative data were collected through semi- structured interviews. The study was framed within the interpretive approach, and sought to unpack the perceptions of SMT members with regard to team-management . An interpretive paradigm made it possible for the researcher to gain an in-depth understanding of SMT members‟ perceptions of team-management within their contexts. The outcomes pointed to several challenges ranging from the SMT terms of reference, cooperation, sources of support and stress as a result of the work overload involved. Based on the findings, SMTs have brought the phenomenon of cooperation to the fore, and cooperation may be perceived to have many advantages. However, in order for the SMTs to play a meaningful role in curriculum management and governance issues, there is a need for them to be conversant with issues and kept abreast of developments in education as a system. It is therefore recommended that members of the SMT be exposed to continuing professional training and development in the aforementioned governance areas.
- Full Text:
- Date Issued: 2011
Reflective accounts of childhood inter-species experiences in a Southern-African context: a phenomenological-hermeneutic exploration
- Authors: Rump, Samantha
- Date: 2008
- Subjects: Child psychology -- South Africa Child development -- South Africa Human-animal relationships -- South Africa Children and animals -- South Africa Animal psychology -- South Africa Hermeneutics Phenomenology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3045 , http://hdl.handle.net/10962/d1002554
- Description: The aims of this research were to describe in rich phenomenological detail the recollected childhood experiences described by three South African adults of growing up with animals in the context of a traditionally African cultural perspective in South Africa; as well as to document the emotional, physical and social effects of inter-species relationships as described by these participants, in order to explore and situate these experiences in relation to broad international perspectives on the contribution of animals to human development. The question of how these described experiences correlate with broad international perspectives on the contribution of animals to human development comprised the hermeneutic of the study. Here it was found that the experiences of these South African individuals were generally in keeping with the trends found in the literature. Participants attributed to their childhood relationships with animals a variety of benefits. These benefits occur on a range of levels, from the physical to the cognitive, and the psychosocial. The emotional attachment of the participants to animals with whom they had interacted in childhood correlated with the nature of interspecies relationships as anticipated by the literature. Cultural differences in the conceptualisation of inter-species relationships, between western and traditionally African ideologies, appeared to influence the moral and ethical positions assumed by the participants, while the subjective nature of the described attachment between participants and animals remains qualitatively similar across cultures, when explored in relation to international research. The similarities between the experiences of the participants and international research findings lend credence to Wilson’s hypothesis that all human beings are potentially able to connect in deep and profound ways with their natural environment, and that this connection contributes to the development of social and cognitive skills, as well as constituting emotional support and stability. The research concludes with an examination of its own limitations and suggestions are made for further research.
- Full Text:
- Date Issued: 2008
- Authors: Rump, Samantha
- Date: 2008
- Subjects: Child psychology -- South Africa Child development -- South Africa Human-animal relationships -- South Africa Children and animals -- South Africa Animal psychology -- South Africa Hermeneutics Phenomenology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3045 , http://hdl.handle.net/10962/d1002554
- Description: The aims of this research were to describe in rich phenomenological detail the recollected childhood experiences described by three South African adults of growing up with animals in the context of a traditionally African cultural perspective in South Africa; as well as to document the emotional, physical and social effects of inter-species relationships as described by these participants, in order to explore and situate these experiences in relation to broad international perspectives on the contribution of animals to human development. The question of how these described experiences correlate with broad international perspectives on the contribution of animals to human development comprised the hermeneutic of the study. Here it was found that the experiences of these South African individuals were generally in keeping with the trends found in the literature. Participants attributed to their childhood relationships with animals a variety of benefits. These benefits occur on a range of levels, from the physical to the cognitive, and the psychosocial. The emotional attachment of the participants to animals with whom they had interacted in childhood correlated with the nature of interspecies relationships as anticipated by the literature. Cultural differences in the conceptualisation of inter-species relationships, between western and traditionally African ideologies, appeared to influence the moral and ethical positions assumed by the participants, while the subjective nature of the described attachment between participants and animals remains qualitatively similar across cultures, when explored in relation to international research. The similarities between the experiences of the participants and international research findings lend credence to Wilson’s hypothesis that all human beings are potentially able to connect in deep and profound ways with their natural environment, and that this connection contributes to the development of social and cognitive skills, as well as constituting emotional support and stability. The research concludes with an examination of its own limitations and suggestions are made for further research.
- Full Text:
- Date Issued: 2008
Geology, regional diamond exploration and diamond provenance of the proterozoic diamondiferous Umkondo conglomerates, Umkondo group, eastern Zimbabwe
- Authors: Zhou, Takawira
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/3598 , vital:20528
- Description: The Umkondo Sedimentary Basin in eastern Zimbabwe has been studied by various individuals and organizations since 1901. Their interest had been in finding limestone and beryl and base metal deposits, especially copper, iron and uranium, but these occurrences had proved to be of no economic value (Watson, 1969). The recent discovery of placer diamonds within the Proterozoic basal conglomerates of the Umkondo Sedimentary Basin has now attracted worldwide interest in the basin’s diamond economic potential, in understanding of the geology, and the diamond provenance of the Umkondo conglomerates. The Umkondo Sedimentary Basin basal conglomerate placer deposit might narrowly be defined as a mega-placer because of its sheer large size and high grades, especially on the 70,000 hectare western margin diamond dispersion halo where alluvial diamonds are being mined. Bluck, et al., (2005, pp 213) defines a diamond mega-placer as: . . . a number of linked deposits that are a result of one or a continuous process of transportation and deposition and holds or have held at least >= 50 million carats at >= 95% gem quality, for example, the Orange-Vaal dispersal, off the Kaapvaal craton in South Africa. On craton placers are residual, and transient placers are eroded and deposited into the exit drainage, while terminal placers, the final depositories of diamonds with the highest chances of being mega-placers are deposited into terminal basins like oceans and foreland basins. Though data is limited at the moment, the Umkondo conglomerates caratage is likely to run into hundreds of millions of carats, with a diamond gem content of between twenty and twenty-five percent, as is indicated from recent diamond production data. The greater part of the Umkondo diamonds are likely to be lodged beneath the deep gravels of the Middle and Lower Save River basin, because small remnant tilted mountain blocks and inselbergs forming the caps of hills are what remains of the host conglomerate on the western margin of the Umkondo Basin. Areas to be examined in this document will be the geology; the mode of formation of the Umkondo basin and its sedimentary system; the regional kimberlite exploration around the basin; and diamond production in the Marange diamond field, in order to come up with indications of the provenance of the diamonds within the Umkondo conglomerates. The kimberlite clusters in and around the Umkondo sedimentary basin have all proved to be barren or only nominally diamondiferous and that the kimberlites are between 200Ma and 500Ma and thus much younger than the greater than 1.1Ga Umkondo diamondiferous conglomerates. Studies so far undertaken have not managed to point to the origin, or provenance, of the Umkondo or Marange diamonds, which were discovered on the western edge of the Umkondo Basin and in the east of the basin below the Chimanimani Mountains along the Haroni River. This paper is an attempt to clear up some of the misconceptions surrounding the Marange diamond deposit and to raise interest in the urgent rquirement to study and understand the Umkondo Basin and the origin of its diamonds. The only meaningful studies on diamond occurrence and diamond exploration of the basin were undertaken from 1996 to 2006 by Kimberlitic Searches Zimbabwe (Pvt) Ltd, the then Zimbabwe kimberlite exploration arm of De Beers, Zimbabwe, in their quest to find kimberlites, which were thought to be related to the Umkondo alluvial diamond deposit. As will be shown in the following chapters, many of the discovered kimberlites range from very low grade to non-diamondiferous, and are much younger than the Umkondo conglomerates, whose diamonds are in turn a great deal older. Thus the basic question concerning the origin or provenance of the Umkondo placer diamonds still remains unresolved. Because of the sheer size of the basin, modern, wide-area-coverage, geophysical exploration methods become appropriate to effectively generate diamond potential targets for further examination. This document will attempt to collate various data available to paint a true picture of the state of exploration within the Umkondo Basin.
- Full Text:
- Date Issued: 2016
- Authors: Zhou, Takawira
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/3598 , vital:20528
- Description: The Umkondo Sedimentary Basin in eastern Zimbabwe has been studied by various individuals and organizations since 1901. Their interest had been in finding limestone and beryl and base metal deposits, especially copper, iron and uranium, but these occurrences had proved to be of no economic value (Watson, 1969). The recent discovery of placer diamonds within the Proterozoic basal conglomerates of the Umkondo Sedimentary Basin has now attracted worldwide interest in the basin’s diamond economic potential, in understanding of the geology, and the diamond provenance of the Umkondo conglomerates. The Umkondo Sedimentary Basin basal conglomerate placer deposit might narrowly be defined as a mega-placer because of its sheer large size and high grades, especially on the 70,000 hectare western margin diamond dispersion halo where alluvial diamonds are being mined. Bluck, et al., (2005, pp 213) defines a diamond mega-placer as: . . . a number of linked deposits that are a result of one or a continuous process of transportation and deposition and holds or have held at least >= 50 million carats at >= 95% gem quality, for example, the Orange-Vaal dispersal, off the Kaapvaal craton in South Africa. On craton placers are residual, and transient placers are eroded and deposited into the exit drainage, while terminal placers, the final depositories of diamonds with the highest chances of being mega-placers are deposited into terminal basins like oceans and foreland basins. Though data is limited at the moment, the Umkondo conglomerates caratage is likely to run into hundreds of millions of carats, with a diamond gem content of between twenty and twenty-five percent, as is indicated from recent diamond production data. The greater part of the Umkondo diamonds are likely to be lodged beneath the deep gravels of the Middle and Lower Save River basin, because small remnant tilted mountain blocks and inselbergs forming the caps of hills are what remains of the host conglomerate on the western margin of the Umkondo Basin. Areas to be examined in this document will be the geology; the mode of formation of the Umkondo basin and its sedimentary system; the regional kimberlite exploration around the basin; and diamond production in the Marange diamond field, in order to come up with indications of the provenance of the diamonds within the Umkondo conglomerates. The kimberlite clusters in and around the Umkondo sedimentary basin have all proved to be barren or only nominally diamondiferous and that the kimberlites are between 200Ma and 500Ma and thus much younger than the greater than 1.1Ga Umkondo diamondiferous conglomerates. Studies so far undertaken have not managed to point to the origin, or provenance, of the Umkondo or Marange diamonds, which were discovered on the western edge of the Umkondo Basin and in the east of the basin below the Chimanimani Mountains along the Haroni River. This paper is an attempt to clear up some of the misconceptions surrounding the Marange diamond deposit and to raise interest in the urgent rquirement to study and understand the Umkondo Basin and the origin of its diamonds. The only meaningful studies on diamond occurrence and diamond exploration of the basin were undertaken from 1996 to 2006 by Kimberlitic Searches Zimbabwe (Pvt) Ltd, the then Zimbabwe kimberlite exploration arm of De Beers, Zimbabwe, in their quest to find kimberlites, which were thought to be related to the Umkondo alluvial diamond deposit. As will be shown in the following chapters, many of the discovered kimberlites range from very low grade to non-diamondiferous, and are much younger than the Umkondo conglomerates, whose diamonds are in turn a great deal older. Thus the basic question concerning the origin or provenance of the Umkondo placer diamonds still remains unresolved. Because of the sheer size of the basin, modern, wide-area-coverage, geophysical exploration methods become appropriate to effectively generate diamond potential targets for further examination. This document will attempt to collate various data available to paint a true picture of the state of exploration within the Umkondo Basin.
- Full Text:
- Date Issued: 2016
Perceptions of environmental education among senior Ciskeian educationists, and the implications for educational change in the Ciskei region
- Authors: Mkala-Pholo, Pumla Patricia
- Date: 1994
- Subjects: Environmental education -- South Africa -- Ciskei Environmental education -- Curricula -- South Africa -- Ciskei Educators -- South Africa -- Ciskei -- Attitudes Educational planning -- South Africa -- Ciskei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1692 , http://hdl.handle.net/10962/d1003575
- Description: This study was conducted to investigate perceptions of Environmental Education among senior Ciskeian educationists, and to explore the possibility of implementing Environmental Education in school and college curricula in the Ciskei region. Data was collected from interviews with a sample of senior Ciskeian educationists, then analysed and assessed. Corroborating information was obtained from attendance at several regional workshops organised by the Environmental Education Policy Initiative. The data indicated a sound general awareness of environmental problems in Ciskei and a belief in Environmental Education as a means toward their solution. Although the interviewees' understanding of Environmental Education was imperfect, there was broad support for its aims and principles. Since the study was motivated by concern about the implementation of Environmental Education in Ciskei, the results obtained were encouraging.
- Full Text:
- Date Issued: 1994
- Authors: Mkala-Pholo, Pumla Patricia
- Date: 1994
- Subjects: Environmental education -- South Africa -- Ciskei Environmental education -- Curricula -- South Africa -- Ciskei Educators -- South Africa -- Ciskei -- Attitudes Educational planning -- South Africa -- Ciskei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1692 , http://hdl.handle.net/10962/d1003575
- Description: This study was conducted to investigate perceptions of Environmental Education among senior Ciskeian educationists, and to explore the possibility of implementing Environmental Education in school and college curricula in the Ciskei region. Data was collected from interviews with a sample of senior Ciskeian educationists, then analysed and assessed. Corroborating information was obtained from attendance at several regional workshops organised by the Environmental Education Policy Initiative. The data indicated a sound general awareness of environmental problems in Ciskei and a belief in Environmental Education as a means toward their solution. Although the interviewees' understanding of Environmental Education was imperfect, there was broad support for its aims and principles. Since the study was motivated by concern about the implementation of Environmental Education in Ciskei, the results obtained were encouraging.
- Full Text:
- Date Issued: 1994
Template-assisted sol-gel synthesis of carbon doped titanium dioxide nanotubes and their characterization
- Authors: Takata, Nwabisa
- Date: 2017
- Subjects: Nanotechnology Titanium dioxide Nanostructures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/13194 , vital:39473
- Description: This study reveals the effects of doping on the morphological, structural and optical properties of titanium dioxide (TiO2) nanotubes (TNTs), synthesized by sol-gel template-assisted sol-gel technique. The nanotubes (TNTs) were prepared in anodic alumina membranes (AAM) with a pore diameter range of 110-210 nm by using titanium tetra butoxide as a sol-gel precursor and oxalic acid dihydrate as a dopant source. The synthesized nanotubes were evaluated using scanning electron microscope (SEM), energy dispersive spectroscopy (EDX), fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), confocal Raman spectroscopy (CRS) and photoluminescence spectroscopy (PL). SEM analysis has revealed the presence of closely-packed TNTs, with a modal external tube diameters of 150, 170, 210,190 and 210 nm for the un-doped TNTs, 9 mM carbon doped-TNTs (C-TNTs), 27 mM C-TNTs, 45 mM C-TNTs and 75 mM C-TNTs respectively. The diameters are consistent with the AAM diameter range. EDX spectra revealed the presence of Ti peaks at 0.45 and 4.9 keV corresponding to Kα1 and Kβ1 emission lines respectively. Oxygen exhibits a signal at 0.5 keV corresponding to Kα1 emission line. The occurrence of these peaks in the EDX spectra endorses the existence of Ti and O atoms in the prepared titanium dioxide nanotubes. FTIR spectroscopy has revealed the presence of vibration modes at 580-660 cm-1 indicating the presence of Ti-O bonds and additional vibration modes at 2324 cm-1 resulting from C-O stretching in the C-TNTs. The XRD analysis has revealed the presence of a mixed anatase-brookite phase with diffraction peaks at 2θ angles of 25.49⁰, 38.11⁰, 40.60º, 48.14⁰, 54.58⁰, 63.00⁰, 70.11⁰ and 75.66⁰. Additionally, XRD analysis has revealed elongation of lattice parameter “c” from 9.143 to 9.830 Å with carbon concentration increase. Lattice expansion indicates the possibility of carbon substituting oxygen sites. Raman large area scan has revealed the presence of rutile, brookite and anatase for the undoped samples. On doping the rutile phase of TiO2 has shown to be suppressed by the presence of carbon atoms such that the doped samples consist of brookite and anatase phases only. The Eg1 mode of anatase of the undoped TNTs at 153. 78 cm-1 was red shifted by Δ9.78 cm-1 relative to the bulk anatase TiO2. This was attributed to decrease in particle size, presence of brookite and phonon confinement. Upon doping, the 9 mM C-TNTs, 27 mM TNTs and 75 mM TNTs have shown a red shift of Δ0. 09 cm-1, Δ1. 39 cm-1 and 1.81 cm-1 respectively, suggesting the incorporation of carbon in the TiO2 matrix. CRS depth profiling in the XZ direction has also validated the presence of a mixed anatase-brookite phase at Raman active modes 153.19 cm-1, 208.87 cm-1, 404.55 cm-1, 523.26 cm-1 and 648.55 cm-1. Photoluminescence spectra of carbon doped TiO2 showed two emission peaks at 398 nm attributed to annihilation of excitons while the broad peak at 400-460 nm was attributed to the presence of oxygen vacancies. The peak intensity of the 45 mM C-TNTs has shown a lower PL intensity suggesting that efficiency of charge separation was higher and recombination rate was lower than other carbon containing samples.
- Full Text:
- Date Issued: 2017
- Authors: Takata, Nwabisa
- Date: 2017
- Subjects: Nanotechnology Titanium dioxide Nanostructures
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/13194 , vital:39473
- Description: This study reveals the effects of doping on the morphological, structural and optical properties of titanium dioxide (TiO2) nanotubes (TNTs), synthesized by sol-gel template-assisted sol-gel technique. The nanotubes (TNTs) were prepared in anodic alumina membranes (AAM) with a pore diameter range of 110-210 nm by using titanium tetra butoxide as a sol-gel precursor and oxalic acid dihydrate as a dopant source. The synthesized nanotubes were evaluated using scanning electron microscope (SEM), energy dispersive spectroscopy (EDX), fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), confocal Raman spectroscopy (CRS) and photoluminescence spectroscopy (PL). SEM analysis has revealed the presence of closely-packed TNTs, with a modal external tube diameters of 150, 170, 210,190 and 210 nm for the un-doped TNTs, 9 mM carbon doped-TNTs (C-TNTs), 27 mM C-TNTs, 45 mM C-TNTs and 75 mM C-TNTs respectively. The diameters are consistent with the AAM diameter range. EDX spectra revealed the presence of Ti peaks at 0.45 and 4.9 keV corresponding to Kα1 and Kβ1 emission lines respectively. Oxygen exhibits a signal at 0.5 keV corresponding to Kα1 emission line. The occurrence of these peaks in the EDX spectra endorses the existence of Ti and O atoms in the prepared titanium dioxide nanotubes. FTIR spectroscopy has revealed the presence of vibration modes at 580-660 cm-1 indicating the presence of Ti-O bonds and additional vibration modes at 2324 cm-1 resulting from C-O stretching in the C-TNTs. The XRD analysis has revealed the presence of a mixed anatase-brookite phase with diffraction peaks at 2θ angles of 25.49⁰, 38.11⁰, 40.60º, 48.14⁰, 54.58⁰, 63.00⁰, 70.11⁰ and 75.66⁰. Additionally, XRD analysis has revealed elongation of lattice parameter “c” from 9.143 to 9.830 Å with carbon concentration increase. Lattice expansion indicates the possibility of carbon substituting oxygen sites. Raman large area scan has revealed the presence of rutile, brookite and anatase for the undoped samples. On doping the rutile phase of TiO2 has shown to be suppressed by the presence of carbon atoms such that the doped samples consist of brookite and anatase phases only. The Eg1 mode of anatase of the undoped TNTs at 153. 78 cm-1 was red shifted by Δ9.78 cm-1 relative to the bulk anatase TiO2. This was attributed to decrease in particle size, presence of brookite and phonon confinement. Upon doping, the 9 mM C-TNTs, 27 mM TNTs and 75 mM TNTs have shown a red shift of Δ0. 09 cm-1, Δ1. 39 cm-1 and 1.81 cm-1 respectively, suggesting the incorporation of carbon in the TiO2 matrix. CRS depth profiling in the XZ direction has also validated the presence of a mixed anatase-brookite phase at Raman active modes 153.19 cm-1, 208.87 cm-1, 404.55 cm-1, 523.26 cm-1 and 648.55 cm-1. Photoluminescence spectra of carbon doped TiO2 showed two emission peaks at 398 nm attributed to annihilation of excitons while the broad peak at 400-460 nm was attributed to the presence of oxygen vacancies. The peak intensity of the 45 mM C-TNTs has shown a lower PL intensity suggesting that efficiency of charge separation was higher and recombination rate was lower than other carbon containing samples.
- Full Text:
- Date Issued: 2017
Fabrication of a photocatalytic PAN supported C-TiO2-CFA nanocomposite for use in water treatment
- Authors: Mpelane, Amkelwa
- Date: 2020
- Subjects: Photocatalysis
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: http://hdl.handle.net/10353/18744 , vital:42729
- Description: The goal of this study was to fabricate a visible light responsive composite of C-TiO2-CFA. The prepared nanocomposite (C-TiO2-CFA) was immobilized on poly(acrylonitrile) membrane to address the drawback of recovering the nanosized photocatalyst from water after photodegradation experiments. The C-TiO2-CFA nanocomposites were fabricated using a modified sol-gel method, while the C-TiO2-CFA/PAN membranes were prepared via the phase inversion technique. The nanocomposites were fully characterized using FTIR, XRD, SEM-EDX, TEM, DRS, and BET surface area analysis. The prepared C-TiO2-CFA/PAN membranes were evaluated in the photodegradation of methyl orange and the golden yellow dyes, as well as the photoreduction of lead and cadmium heavy metals in synthetic wastewater. UV-Visible spectroscopy was used to follow the changes in the concentration of organic dyes, while inductively coupled plasma optical emission spectroscopy was used to follow changes in the concentration of the heavy metals. FTIR analysis confirmed the presence of functional groups expected on the prepared C-TiO2- CFA/PAN membranes and EDX analysis accounted for the elements expected. The prepared membranes all exhibited an asymmetric structure as depicted by cross-sectional view study via SEM analysis. TEM and SEM analyses revealed that the prepared C-TiO2-CFA nanocomposite was roughly spherical in shape with an estimate particle size of 10.94 nm according to TEM and 11.62 nm according to XRD using Scherrer equation. The incorporation of carbon into the lattice structure of titanium dioxide resulted in a reduction in bandgap from 3.19 eV to 2.78 eV through introduction of mid-band states, allowing visible light utilization. The best nanocomposite was obtained by doping TiO2 with 4% carbon and having a C-TiO2 to CFA ratio of 4:1 respectively. The C-TiO2-CFA nanocomposite exhibits a crystalline structure with a mixture of rutile and anatase phases. The parameters investigated in the evaluation of photocatalytic performance of C-TiO2- CFA/PAN were effect of photocatalyst load on PAN membrane, initial dye concentration, pH and light source in the activation of photocatalyst. For both dyes (methyl arrange and golden yellow), it was observed that photodegradation efficiencies increased with an increase in catalyst load. In the photodegradation of MO and GY using the membrane with 1% C-TiO2- CFA, removal efficiencies of 73.3% and 59.99% were attained respectively, while the membrane with 2% C-TiO2-CFA achieved MO and GY photodegradation efficiencies of 99.8% and 99.2% respectively. Photodegradation efficiencies of MO and GY were observed to decrease with an increase in dye concentration. Low pH (3) was observed to favour the photodegradation of MO and GY azo dyes. Photodegradation efficiencies of 99.8% and 99.2% were attained where obtained at lower MO and GY initial concentration. The modified photocatalyst (C-TiO2-CFA/PAN) exhibited better photoactivity under sunlight irradiation compared to strict UV light irradiation. Evidently, the C-TiO2-CFA/PAN membranes can be 4 Final Submission of Thesis, Dissertation or Research Report/Project, Conference or Exam Paper utilized as a sustainable and stable photocatalyst to efficiently eliminate methyl orange and golden yellow dyes. A PAN membrane with 2 wt% C-TiO2-CFA revealed enhanced cadmium and lead removal efficiencies in comparison to PAN membranes with 1 wt% and 1.5% C-TiO2-CFA. A Cd2+ removal efficiency of 95% was obtained using 2 wt% C-TiO2-CFA/PAN nanocomposite membranes. Cadmium removal efficiencies of 92.5% and 91% were obtained using the 1.5 wt% and 1 wt% C-TiO2-CFA/PAN nanocomposite membranes. A lead removal efficiency of 97% was obtained using PAN membrane with 2 wt% C-TiO2-CFA. Pb2+ removal efficiencies of 90.9% and 94.6% were obtained using the 1.5 wt% and 1 wt% C-TiO2-CFA/PAN nanocomposite membranes. The photoreduction activity was observed to decrease with an increase in cadmium and lead initial concentrations. A cadmium and lead removal efficiencies of 95% and 97% were observed at lower Cd2+ and Pb2+ initial concentrations (20 ppm), respectively. The removal efficiencies varied marginally with changes in pH values. The fouling activity of the C-TiO2 modified PAN asymmetric membranes and pure PAN was investigated by carrying out pure water filtration tests as well as bovine serum albumin (BSA) filtration tests. A bovine serum albumin rejection of 98% was obtained utilizing the 2 wt% CTiO2-CFA/PAN membrane.
- Full Text:
- Date Issued: 2020
- Authors: Mpelane, Amkelwa
- Date: 2020
- Subjects: Photocatalysis
- Language: English
- Type: Thesis , Masters , MSc (Chemistry)
- Identifier: http://hdl.handle.net/10353/18744 , vital:42729
- Description: The goal of this study was to fabricate a visible light responsive composite of C-TiO2-CFA. The prepared nanocomposite (C-TiO2-CFA) was immobilized on poly(acrylonitrile) membrane to address the drawback of recovering the nanosized photocatalyst from water after photodegradation experiments. The C-TiO2-CFA nanocomposites were fabricated using a modified sol-gel method, while the C-TiO2-CFA/PAN membranes were prepared via the phase inversion technique. The nanocomposites were fully characterized using FTIR, XRD, SEM-EDX, TEM, DRS, and BET surface area analysis. The prepared C-TiO2-CFA/PAN membranes were evaluated in the photodegradation of methyl orange and the golden yellow dyes, as well as the photoreduction of lead and cadmium heavy metals in synthetic wastewater. UV-Visible spectroscopy was used to follow the changes in the concentration of organic dyes, while inductively coupled plasma optical emission spectroscopy was used to follow changes in the concentration of the heavy metals. FTIR analysis confirmed the presence of functional groups expected on the prepared C-TiO2- CFA/PAN membranes and EDX analysis accounted for the elements expected. The prepared membranes all exhibited an asymmetric structure as depicted by cross-sectional view study via SEM analysis. TEM and SEM analyses revealed that the prepared C-TiO2-CFA nanocomposite was roughly spherical in shape with an estimate particle size of 10.94 nm according to TEM and 11.62 nm according to XRD using Scherrer equation. The incorporation of carbon into the lattice structure of titanium dioxide resulted in a reduction in bandgap from 3.19 eV to 2.78 eV through introduction of mid-band states, allowing visible light utilization. The best nanocomposite was obtained by doping TiO2 with 4% carbon and having a C-TiO2 to CFA ratio of 4:1 respectively. The C-TiO2-CFA nanocomposite exhibits a crystalline structure with a mixture of rutile and anatase phases. The parameters investigated in the evaluation of photocatalytic performance of C-TiO2- CFA/PAN were effect of photocatalyst load on PAN membrane, initial dye concentration, pH and light source in the activation of photocatalyst. For both dyes (methyl arrange and golden yellow), it was observed that photodegradation efficiencies increased with an increase in catalyst load. In the photodegradation of MO and GY using the membrane with 1% C-TiO2- CFA, removal efficiencies of 73.3% and 59.99% were attained respectively, while the membrane with 2% C-TiO2-CFA achieved MO and GY photodegradation efficiencies of 99.8% and 99.2% respectively. Photodegradation efficiencies of MO and GY were observed to decrease with an increase in dye concentration. Low pH (3) was observed to favour the photodegradation of MO and GY azo dyes. Photodegradation efficiencies of 99.8% and 99.2% were attained where obtained at lower MO and GY initial concentration. The modified photocatalyst (C-TiO2-CFA/PAN) exhibited better photoactivity under sunlight irradiation compared to strict UV light irradiation. Evidently, the C-TiO2-CFA/PAN membranes can be 4 Final Submission of Thesis, Dissertation or Research Report/Project, Conference or Exam Paper utilized as a sustainable and stable photocatalyst to efficiently eliminate methyl orange and golden yellow dyes. A PAN membrane with 2 wt% C-TiO2-CFA revealed enhanced cadmium and lead removal efficiencies in comparison to PAN membranes with 1 wt% and 1.5% C-TiO2-CFA. A Cd2+ removal efficiency of 95% was obtained using 2 wt% C-TiO2-CFA/PAN nanocomposite membranes. Cadmium removal efficiencies of 92.5% and 91% were obtained using the 1.5 wt% and 1 wt% C-TiO2-CFA/PAN nanocomposite membranes. A lead removal efficiency of 97% was obtained using PAN membrane with 2 wt% C-TiO2-CFA. Pb2+ removal efficiencies of 90.9% and 94.6% were obtained using the 1.5 wt% and 1 wt% C-TiO2-CFA/PAN nanocomposite membranes. The photoreduction activity was observed to decrease with an increase in cadmium and lead initial concentrations. A cadmium and lead removal efficiencies of 95% and 97% were observed at lower Cd2+ and Pb2+ initial concentrations (20 ppm), respectively. The removal efficiencies varied marginally with changes in pH values. The fouling activity of the C-TiO2 modified PAN asymmetric membranes and pure PAN was investigated by carrying out pure water filtration tests as well as bovine serum albumin (BSA) filtration tests. A bovine serum albumin rejection of 98% was obtained utilizing the 2 wt% CTiO2-CFA/PAN membrane.
- Full Text:
- Date Issued: 2020
The potential of hydrellia egeriae rodrigues (diptera: ephydridae) as a biocontrol agent for egeria densa planch. (hydrocharitaceae) in South Africa
- Authors: Smith, Rosali
- Date: 2017
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/53733 , vital:26314
- Description: The integrity of South Africa’s valuable freshwater ecosystems has been threatened by aquatic invasive plants since the 1900s. Floating aquatic weeds, such as Eichhornia crassipes (C. Mart) Solms (Pondederiaceae), Pistia stratiotes L. (Araceae), Salvinia molesta D.S. Mitchell (Salviniaceae), Azolla filiculoides Lam. (Azollaceae), and the emergent weed, Myriophyllum aquaticum Verdc. (Haloragaceae) benefited from open, nutrient-rich water bodies. Due to the limitations of mechanical and chemical control in aquatic environments, classical biological control has been a huge asset in managing these weeds; consequently bringing them under complete or substantial control. However, submerged aquatic weeds are widely distributed through the aquarium trade in South Africa; facilitating their invasion into new habitats. The removal of surface mats following the successful management of floating weeds has enhanced the growth and competitive ability of submerged aquatic weeds, such as Hydrilla verticillata (L.f.) Royle (Hydrocharitaceae), Myriophyllum spicatum L. (Haloragaceae) and Egeria densa Planch. (Hydrocharitaceae) in South Africa. Of these species, E. densa has become the most widely distributed, invading numerous systems across South Africa. Compared to other exotic submerged aquatic plants, E. densa is the only species capable of inhabiting freshwater systems in every province and therefore, it is vital to manage existing populations and prevent its further distribution and invasion. Hydrellia spp. (Diptera: Ephydridae) biological control agents have been used extensively in the management of submerged aquatic weeds elsewhere, particularly those in the Hydrocharitaceae (Balciunas and Burrows 1996; Wheeler and Center 2001. Hydrellia egeriae Rodrigues (Diptera: Ephydridae) has been identified as a promising candidate for E. densa and was imported into quarantine at Rhodes University, Grahamstown in 2014. The aims of this study were to conduct a pre-release assessment of the potential of H. egeriae as a biological control agent for E. densa in South Africa. The first objective of this study was to establish the life history of the agent under controlled conditions on E. densa found in South Africa, as well as its population growth parameters to predict its invasion success in the field. Secondly, laboratory host-specificity testing was conducted to validate the host range of the agent, in view of published native range host-specificity testing, and to establish potential risks to non-target species, should it be released. Finally, a biological control agent should also effectively reduce the fitness of its host plant, and therefore, impact studies were conducted. Laboratory impact studies have been limited in the past, in that they only investigate agent damage for short ecological periods, thus underestimating the damage capacity of the agent under investigation. Therefore, the damage capacity of H. egeriae was investigated over three consecutive generations in multi-generational impact trials. In a controlled environment of 22 ± 2°C, H. egeriae exhibited the ability to rapidly increase in population size within a short period of time, which will enhance agent establishment and build-up in the field. Host-specificity trials indicated that H. egeriae has a host range restricted to the Hydrocharitaceae, with exploratory feeding and development on Lagarosiphon major Ridley, L. muscoides Harvey and Vallisneria spiralis L. However, only L. major supported agent development during paired larval choice tests, and continuation trials showed that the test species was not physiologically capable of supporting viable agent populations. Risk analysis illustrated that the feeding and reproductive risks that H. egeriae pose to non-target species are very low and therefore, H. egeriae should be safe for release in South Africa. Additionally, significant damage to vital plant structures (shoot growth and side shoot length) was only recorded under high (five larvae) agent abundances. Encouragingly, the number of leaves mined at the end of the experiment was similar for both intermediate (three) and high (five) larval abundances, suggesting that cumulative leaf-mining under intermediate larval abundances has the potential to reduce the fitness of E. densa, given sufficient time. Results from pre-release assessments provide a robust understanding of the specialization of the potential biological control agent to its host plant. Nevertheless, the absolute success of a biological control programme depends on the many factors after prerelease assessments that determine agent establishment, persistence and target weed suppression, e.g. mass-rearing, release protocols and a/biotic factors within the recipient community. Considering these factors, the best mass-rearing and release protocols are proposed here and future research priorities are identified. Finally, the long term success for managing E. densa in South Africa will require a holistic approach to address the underlying factors, such as eutrophication and human-mediated distribution that drive submerged aquatic plant invasions.
- Full Text:
- Date Issued: 2017
- Authors: Smith, Rosali
- Date: 2017
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/53733 , vital:26314
- Description: The integrity of South Africa’s valuable freshwater ecosystems has been threatened by aquatic invasive plants since the 1900s. Floating aquatic weeds, such as Eichhornia crassipes (C. Mart) Solms (Pondederiaceae), Pistia stratiotes L. (Araceae), Salvinia molesta D.S. Mitchell (Salviniaceae), Azolla filiculoides Lam. (Azollaceae), and the emergent weed, Myriophyllum aquaticum Verdc. (Haloragaceae) benefited from open, nutrient-rich water bodies. Due to the limitations of mechanical and chemical control in aquatic environments, classical biological control has been a huge asset in managing these weeds; consequently bringing them under complete or substantial control. However, submerged aquatic weeds are widely distributed through the aquarium trade in South Africa; facilitating their invasion into new habitats. The removal of surface mats following the successful management of floating weeds has enhanced the growth and competitive ability of submerged aquatic weeds, such as Hydrilla verticillata (L.f.) Royle (Hydrocharitaceae), Myriophyllum spicatum L. (Haloragaceae) and Egeria densa Planch. (Hydrocharitaceae) in South Africa. Of these species, E. densa has become the most widely distributed, invading numerous systems across South Africa. Compared to other exotic submerged aquatic plants, E. densa is the only species capable of inhabiting freshwater systems in every province and therefore, it is vital to manage existing populations and prevent its further distribution and invasion. Hydrellia spp. (Diptera: Ephydridae) biological control agents have been used extensively in the management of submerged aquatic weeds elsewhere, particularly those in the Hydrocharitaceae (Balciunas and Burrows 1996; Wheeler and Center 2001. Hydrellia egeriae Rodrigues (Diptera: Ephydridae) has been identified as a promising candidate for E. densa and was imported into quarantine at Rhodes University, Grahamstown in 2014. The aims of this study were to conduct a pre-release assessment of the potential of H. egeriae as a biological control agent for E. densa in South Africa. The first objective of this study was to establish the life history of the agent under controlled conditions on E. densa found in South Africa, as well as its population growth parameters to predict its invasion success in the field. Secondly, laboratory host-specificity testing was conducted to validate the host range of the agent, in view of published native range host-specificity testing, and to establish potential risks to non-target species, should it be released. Finally, a biological control agent should also effectively reduce the fitness of its host plant, and therefore, impact studies were conducted. Laboratory impact studies have been limited in the past, in that they only investigate agent damage for short ecological periods, thus underestimating the damage capacity of the agent under investigation. Therefore, the damage capacity of H. egeriae was investigated over three consecutive generations in multi-generational impact trials. In a controlled environment of 22 ± 2°C, H. egeriae exhibited the ability to rapidly increase in population size within a short period of time, which will enhance agent establishment and build-up in the field. Host-specificity trials indicated that H. egeriae has a host range restricted to the Hydrocharitaceae, with exploratory feeding and development on Lagarosiphon major Ridley, L. muscoides Harvey and Vallisneria spiralis L. However, only L. major supported agent development during paired larval choice tests, and continuation trials showed that the test species was not physiologically capable of supporting viable agent populations. Risk analysis illustrated that the feeding and reproductive risks that H. egeriae pose to non-target species are very low and therefore, H. egeriae should be safe for release in South Africa. Additionally, significant damage to vital plant structures (shoot growth and side shoot length) was only recorded under high (five larvae) agent abundances. Encouragingly, the number of leaves mined at the end of the experiment was similar for both intermediate (three) and high (five) larval abundances, suggesting that cumulative leaf-mining under intermediate larval abundances has the potential to reduce the fitness of E. densa, given sufficient time. Results from pre-release assessments provide a robust understanding of the specialization of the potential biological control agent to its host plant. Nevertheless, the absolute success of a biological control programme depends on the many factors after prerelease assessments that determine agent establishment, persistence and target weed suppression, e.g. mass-rearing, release protocols and a/biotic factors within the recipient community. Considering these factors, the best mass-rearing and release protocols are proposed here and future research priorities are identified. Finally, the long term success for managing E. densa in South Africa will require a holistic approach to address the underlying factors, such as eutrophication and human-mediated distribution that drive submerged aquatic plant invasions.
- Full Text:
- Date Issued: 2017
Exploring the contributions of youth development programme as a poverty eradication strategy: The case study of the National Youth Development Agency in Ezibeleni Township; Queenstown
- Authors: Vazi, Thembelani
- Date: 2017
- Subjects: Youth development -- South Africa -- Eastern Cape Youth -- Political activity -- South Africa -- Eastern Cape Poverty -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Social Work
- Identifier: http://hdl.handle.net/10353/6502 , vital:30137
- Description: Youth development programmes in South Africa stirs a lot of debates on whether youth development programmes reach all the young people of South Africa even the rural youth. The youth involved in these programmes argue that even though these youth development programmes were created for all the young people of South Africa, some of them do not get the opportunity to be part of such programmes and they are not getting the proper skills that they need in order to create employment opportunities for themselves. Therefore, this study is aimed at exploring the contributions of the youth development programme as a poverty eradication strategy. The data in the study was collected qualitatively through interviews in which the youth, Social Workers, the ward Councillors and NYDA officials were interviewed. The total sample size in the study was 26 participants. The study established that the lack of youth skills is one of the causes of youth unemployment and poverty. Generally, the quality of these youth development programmes are not up to standard for assisting young people, most importantly these youth programmes lack resources. The study revealed that, even though the youth programmes are available, they do not cater for all the young people of Ezibeleni Township and they do not alleviate poverty for all the youth of Ezibeleni Township. Furthermore, those that are part of these youth programmes further complain about the lack of skills within the staff employed in these youth development programmes.
- Full Text:
- Date Issued: 2017
- Authors: Vazi, Thembelani
- Date: 2017
- Subjects: Youth development -- South Africa -- Eastern Cape Youth -- Political activity -- South Africa -- Eastern Cape Poverty -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Social Work
- Identifier: http://hdl.handle.net/10353/6502 , vital:30137
- Description: Youth development programmes in South Africa stirs a lot of debates on whether youth development programmes reach all the young people of South Africa even the rural youth. The youth involved in these programmes argue that even though these youth development programmes were created for all the young people of South Africa, some of them do not get the opportunity to be part of such programmes and they are not getting the proper skills that they need in order to create employment opportunities for themselves. Therefore, this study is aimed at exploring the contributions of the youth development programme as a poverty eradication strategy. The data in the study was collected qualitatively through interviews in which the youth, Social Workers, the ward Councillors and NYDA officials were interviewed. The total sample size in the study was 26 participants. The study established that the lack of youth skills is one of the causes of youth unemployment and poverty. Generally, the quality of these youth development programmes are not up to standard for assisting young people, most importantly these youth programmes lack resources. The study revealed that, even though the youth programmes are available, they do not cater for all the young people of Ezibeleni Township and they do not alleviate poverty for all the youth of Ezibeleni Township. Furthermore, those that are part of these youth programmes further complain about the lack of skills within the staff employed in these youth development programmes.
- Full Text:
- Date Issued: 2017
Working in the city: the design of a vehicle technology research centre for Volkswagen SA in the Nelson Mandela Metropole
- Authors: Danev, Anton V
- Date: 2007
- Subjects: Volkswagen of South Africa (Firm) , Research institutes -- South Africa -- Port Elizabeth -- Designs and plans , Motor vehicle industry -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , M.Arcitecture
- Identifier: http://hdl.handle.net/10948/52834 , vital:44235
- Description: Volkswagen AG is the second largest vehicle manufacturer worldwide with a factory plant located in the Nelson Mandela Metropole. Major part of their [technological] research has in the last 10 years shifted towards a sustainability outlook along a environmentally friendly end-user products approach. A great market is emerging where environmentally sensitive vehicles and equipment are at the forefront of technological development. Volkswagen currently has a limited number of Vehicle Technology Research facilities worldwide and is looking to establish firm positions locally, in line with its company ethics of sustainability and energy consciousness. Part of this initiative is to locate into the CBD of Port Elizabeth aiming to revitalise derelict [inner-city] urban space and promote environmentally sensitive development. Consequently this thesis seeks to explore the possibility of introducing a ( technology) research facility and office space, as part of a mixed-use development, into Port Elizabeth’s inner city and investigate the architectural challenges thereof.
- Full Text:
- Date Issued: 2007
- Authors: Danev, Anton V
- Date: 2007
- Subjects: Volkswagen of South Africa (Firm) , Research institutes -- South Africa -- Port Elizabeth -- Designs and plans , Motor vehicle industry -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , M.Arcitecture
- Identifier: http://hdl.handle.net/10948/52834 , vital:44235
- Description: Volkswagen AG is the second largest vehicle manufacturer worldwide with a factory plant located in the Nelson Mandela Metropole. Major part of their [technological] research has in the last 10 years shifted towards a sustainability outlook along a environmentally friendly end-user products approach. A great market is emerging where environmentally sensitive vehicles and equipment are at the forefront of technological development. Volkswagen currently has a limited number of Vehicle Technology Research facilities worldwide and is looking to establish firm positions locally, in line with its company ethics of sustainability and energy consciousness. Part of this initiative is to locate into the CBD of Port Elizabeth aiming to revitalise derelict [inner-city] urban space and promote environmentally sensitive development. Consequently this thesis seeks to explore the possibility of introducing a ( technology) research facility and office space, as part of a mixed-use development, into Port Elizabeth’s inner city and investigate the architectural challenges thereof.
- Full Text:
- Date Issued: 2007
Appraisal of community-based childcare practices in rural Malawi: the case of Malili traditional authority area, Lilongwe District
- Authors: Alufandika, Dina
- Date: 2012
- Subjects: Tribal government -- Malawi , Child welfare -- Malawi , Child development -- Malawi , Child care services -- Malawi , Community development -- Malawi , Rural development -- Malawi , Malawi -- Social policy , Lilongwe (Malawi)
- Language: English
- Type: Thesis , Masters , M Soc Sc (Rural Development)
- Identifier: vital:11945 , http://hdl.handle.net/10353/d1005968 , Tribal government -- Malawi , Child welfare -- Malawi , Child development -- Malawi , Child care services -- Malawi , Community development -- Malawi , Rural development -- Malawi , Malawi -- Social policy , Lilongwe (Malawi)
- Description: The government of Malawi established the community based childcare (CBCC) programme with the aim of addressing early childhood problems and achieve national development in the long run. The CBCC programme, as one of the approaches to early childhood development (ECD), is guided by the national early childhood development policy. It promotes some practices that somehow deviate from the traditional childcare ways that communities have always known. Experience has shown that programmes that have elements of conflict with commonly held beliefs are bound to meet with resistance in society. The study employed a mini survey, focus group discussion, observation and document review to understand how the CBCC childcare practices in Malili intersect with commonly held beliefs about childcare as well as how they reflect on the national ECD policy. The study also focused on understanding the perceptions of community members on the CBCC programme. The study revealed that while some aspects of CBCC delivery conform to commonly held beliefs about childcare in the area under study, others diverge from such beliefs. Such convergence and divergence appear to be in line with the propositions of transformalist globalisation theory- one of the perspectives adopted for the study. The study also found that care practices at CBCC are not a true reflection of the national ECD policy as community members’ perceptions, poor community participation, poverty and lack of caregiver training in ECD contribute towards poor quality of care in CBCC, contrary to what is defined in the national ECD policy. The study also found that while both CBCC caregivers and sampled community members perceived the quality of care at the centers as poor, caregivers had a more positive perception towards the CBCC than community members. The study indicated that CBCC are centres of desperation for low economic status communities. Findings from the research have revealed that cultural values and commonly held beliefs, and exposure to new knowledge through globalisation play a role in determining childcare practices as well as perceptions towards them. In this sense the study has indicated that meanings that communities attach to development interventions influence their actions and perceptions towards it.
- Full Text:
- Date Issued: 2012
- Authors: Alufandika, Dina
- Date: 2012
- Subjects: Tribal government -- Malawi , Child welfare -- Malawi , Child development -- Malawi , Child care services -- Malawi , Community development -- Malawi , Rural development -- Malawi , Malawi -- Social policy , Lilongwe (Malawi)
- Language: English
- Type: Thesis , Masters , M Soc Sc (Rural Development)
- Identifier: vital:11945 , http://hdl.handle.net/10353/d1005968 , Tribal government -- Malawi , Child welfare -- Malawi , Child development -- Malawi , Child care services -- Malawi , Community development -- Malawi , Rural development -- Malawi , Malawi -- Social policy , Lilongwe (Malawi)
- Description: The government of Malawi established the community based childcare (CBCC) programme with the aim of addressing early childhood problems and achieve national development in the long run. The CBCC programme, as one of the approaches to early childhood development (ECD), is guided by the national early childhood development policy. It promotes some practices that somehow deviate from the traditional childcare ways that communities have always known. Experience has shown that programmes that have elements of conflict with commonly held beliefs are bound to meet with resistance in society. The study employed a mini survey, focus group discussion, observation and document review to understand how the CBCC childcare practices in Malili intersect with commonly held beliefs about childcare as well as how they reflect on the national ECD policy. The study also focused on understanding the perceptions of community members on the CBCC programme. The study revealed that while some aspects of CBCC delivery conform to commonly held beliefs about childcare in the area under study, others diverge from such beliefs. Such convergence and divergence appear to be in line with the propositions of transformalist globalisation theory- one of the perspectives adopted for the study. The study also found that care practices at CBCC are not a true reflection of the national ECD policy as community members’ perceptions, poor community participation, poverty and lack of caregiver training in ECD contribute towards poor quality of care in CBCC, contrary to what is defined in the national ECD policy. The study also found that while both CBCC caregivers and sampled community members perceived the quality of care at the centers as poor, caregivers had a more positive perception towards the CBCC than community members. The study indicated that CBCC are centres of desperation for low economic status communities. Findings from the research have revealed that cultural values and commonly held beliefs, and exposure to new knowledge through globalisation play a role in determining childcare practices as well as perceptions towards them. In this sense the study has indicated that meanings that communities attach to development interventions influence their actions and perceptions towards it.
- Full Text:
- Date Issued: 2012
The educationally-related challenges faced by teenage mothers on returning to school: a Namibian case study
- Authors: Shaningwa, Lilia Mariro
- Date: 2007
- Subjects: Teenage mothers -- Namibia -- Case studies Teenagers -- Education -- Namibia -- Case studies Education, Secondary -- Namibia -- Case studies Teenage pregnancy -- Namibia -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1506 , http://hdl.handle.net/10962/d1003388
- Description: The study aimed to investigate the educationally-related challenges faced by teenage mothers in coming back to school in two senior schools in the Kavango Education Region. This small-scale study focused on the challenges that influence or affect the academic progress and development of these learners. The study looked at how teenage pregnancy is perceived as a social problem in many countries as well as in Namibia and examined its impact on the educational aspirations of the young mothers. Namibia has a policy in place to cater for the continued education of learners returning to school after the birth of their babies. This policy was analysed and its implementation in the selected schools formed part of the study, The findings revealed that the educational challenges faced by these young women range from social exclusion to the need to manage the dual responsibilities of motherhood and study. The way in which the learners who participated in this study are viewed by their peers and their teachers was found to be influenced by the cultural connotations ascribed to women as soon as they become mothers, a factor that adds to the challenges these learners face when returning to schools. Cultural connotations which perceived a mother as an adult in the society was attached to the change of the behaviours and attitudes of school young mothers. The findings also showed that while these learners tended to be withdrawn in class and were generally unable to participate in extra-mural activities, they none the less were able to compete with their peers in terms of their academic performance. The study revealed that there is no shared understanding of the policy among the participants and that it is not effectively implemented in the schools, nor is it uniformly applied.
- Full Text:
- Date Issued: 2007
- Authors: Shaningwa, Lilia Mariro
- Date: 2007
- Subjects: Teenage mothers -- Namibia -- Case studies Teenagers -- Education -- Namibia -- Case studies Education, Secondary -- Namibia -- Case studies Teenage pregnancy -- Namibia -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1506 , http://hdl.handle.net/10962/d1003388
- Description: The study aimed to investigate the educationally-related challenges faced by teenage mothers in coming back to school in two senior schools in the Kavango Education Region. This small-scale study focused on the challenges that influence or affect the academic progress and development of these learners. The study looked at how teenage pregnancy is perceived as a social problem in many countries as well as in Namibia and examined its impact on the educational aspirations of the young mothers. Namibia has a policy in place to cater for the continued education of learners returning to school after the birth of their babies. This policy was analysed and its implementation in the selected schools formed part of the study, The findings revealed that the educational challenges faced by these young women range from social exclusion to the need to manage the dual responsibilities of motherhood and study. The way in which the learners who participated in this study are viewed by their peers and their teachers was found to be influenced by the cultural connotations ascribed to women as soon as they become mothers, a factor that adds to the challenges these learners face when returning to schools. Cultural connotations which perceived a mother as an adult in the society was attached to the change of the behaviours and attitudes of school young mothers. The findings also showed that while these learners tended to be withdrawn in class and were generally unable to participate in extra-mural activities, they none the less were able to compete with their peers in terms of their academic performance. The study revealed that there is no shared understanding of the policy among the participants and that it is not effectively implemented in the schools, nor is it uniformly applied.
- Full Text:
- Date Issued: 2007
An analysis of malware evasion techniques against modern AV engines
- Authors: Haffejee, Jameel
- Date: 2015
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:20979 , http://hdl.handle.net/10962/5821
- Description: This research empirically tested the response of antivirus applications to binaries that use virus-like evasion techniques. In order to achieve this, a number of binaries are processed using a number of evasion methods and are then deployed against several antivirus engines. The research also documents the process of setting up an environment for testing antivirus engines, including building the evasion techniques used in the tests. The results of the empirical tests illustrate that an attacker can evade multiple antivirus engines without much effort using well-known evasion techniques. Furthermore, some antivirus engines may respond to the occurrence of an evasion technique instead of the presence of any malicious code. In practical terms, this shows that while antivirus applications are useful for protecting against known threats, their effectiveness against unknown or modified threats is limited.
- Full Text:
- Date Issued: 2015
- Authors: Haffejee, Jameel
- Date: 2015
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:20979 , http://hdl.handle.net/10962/5821
- Description: This research empirically tested the response of antivirus applications to binaries that use virus-like evasion techniques. In order to achieve this, a number of binaries are processed using a number of evasion methods and are then deployed against several antivirus engines. The research also documents the process of setting up an environment for testing antivirus engines, including building the evasion techniques used in the tests. The results of the empirical tests illustrate that an attacker can evade multiple antivirus engines without much effort using well-known evasion techniques. Furthermore, some antivirus engines may respond to the occurrence of an evasion technique instead of the presence of any malicious code. In practical terms, this shows that while antivirus applications are useful for protecting against known threats, their effectiveness against unknown or modified threats is limited.
- Full Text:
- Date Issued: 2015
The effects of changing western worldviews on morals and ethics in economics: a protestant perspective
- Authors: Appalraju, Nerusha
- Date: 2017
- Subjects: Economics -- Moral and ethical aspects , Neoclassical school of economics , Capitalism -- Religious aspects -- Protestant churches , Feminist economics , Economics -- Religious aspects , Environmental economics -- Moral and ethical aspects , Smith, Adam, 1723-1790 , Weber, Max, 1864-1920
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10962/32480 , vital:24050
- Description: The World Economics Association held an online conference in 2012 where they published many papers on ethics in economics. The topic of ethics in economics became more serious and popular following the 2008 financial crisis. However the case for a professional code of ethics in economics is difficult to introduce and implement due to the multidisciplinary approach of the discipline. Therefore authors such as Dow (2012), De Martino (2012), Freeman (2012) and Earl (2012) urged economists to start thinking about ethics in economics from a pluralistic view. This thesis studied the effects of changing Western worldviews on morals and ethics in economics from a Protestant perspective. Numerous authoritative sources were considered and used to create a discussion and analysis of how diverse Western worldviews impact on the type of economics which is prescribed and practiced. It was found that different Western worldviews create various standards of understanding and evaluation, which result in varying opinions on what constitutes as morally or ethically acceptable within the discipline of economics.
- Full Text:
- Date Issued: 2017
- Authors: Appalraju, Nerusha
- Date: 2017
- Subjects: Economics -- Moral and ethical aspects , Neoclassical school of economics , Capitalism -- Religious aspects -- Protestant churches , Feminist economics , Economics -- Religious aspects , Environmental economics -- Moral and ethical aspects , Smith, Adam, 1723-1790 , Weber, Max, 1864-1920
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10962/32480 , vital:24050
- Description: The World Economics Association held an online conference in 2012 where they published many papers on ethics in economics. The topic of ethics in economics became more serious and popular following the 2008 financial crisis. However the case for a professional code of ethics in economics is difficult to introduce and implement due to the multidisciplinary approach of the discipline. Therefore authors such as Dow (2012), De Martino (2012), Freeman (2012) and Earl (2012) urged economists to start thinking about ethics in economics from a pluralistic view. This thesis studied the effects of changing Western worldviews on morals and ethics in economics from a Protestant perspective. Numerous authoritative sources were considered and used to create a discussion and analysis of how diverse Western worldviews impact on the type of economics which is prescribed and practiced. It was found that different Western worldviews create various standards of understanding and evaluation, which result in varying opinions on what constitutes as morally or ethically acceptable within the discipline of economics.
- Full Text:
- Date Issued: 2017
Grouping complex systems for classification and parallel simulation
- Authors: Ikram, Ismail Mohamed
- Date: 1997
- Subjects: Digital computer simulation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4662 , http://hdl.handle.net/10962/d1006665
- Description: This thesis is concerned with grouping complex systems by means of concurrent model, in order to aid in (i) formulation of classifications and (ii) induction of parallel simulation programs. It observes, and seeks f~ furmalize _ and then exploit, the strong structural resemblance between complex systems and occam programs. The thesis hypothesizes that groups of complex systems may be discriminated according to shared structural and behavioural characteristics. Such an analysis of the complex systems domain may be performed in the abstract with the aid of a model for capturing interesting features of complex systems. The resulting groups would form a classification of complex systems. An additional hypothesis is that, insofar as the model is able to capture sufficient . programmatic information, these groups may be used to define, automatically, algorithmic skeletons for the concurrent simulation of complex systems. In order to test these hypotheses, a specification model and an accompanying formal notation are developed. The model expresses properties of complex systems in a mixture of object-oriented and process-oriented styles .. The model is then used as the basis for performing both classification and automatic induction of parallel simulation programs. The thesis takes the view that specification models should not be overly complex, especially if the specifications are meant to be executable. Therefore the requirement for explicit consideration of concurrency on the part of specifiers is minimized. The thesis formulates specifications of classes of cellular automata and neural networks according to the proposed model. Procedures for verificati6If - and induction of parallel simulation programs are also included.
- Full Text:
- Date Issued: 1997
- Authors: Ikram, Ismail Mohamed
- Date: 1997
- Subjects: Digital computer simulation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4662 , http://hdl.handle.net/10962/d1006665
- Description: This thesis is concerned with grouping complex systems by means of concurrent model, in order to aid in (i) formulation of classifications and (ii) induction of parallel simulation programs. It observes, and seeks f~ furmalize _ and then exploit, the strong structural resemblance between complex systems and occam programs. The thesis hypothesizes that groups of complex systems may be discriminated according to shared structural and behavioural characteristics. Such an analysis of the complex systems domain may be performed in the abstract with the aid of a model for capturing interesting features of complex systems. The resulting groups would form a classification of complex systems. An additional hypothesis is that, insofar as the model is able to capture sufficient . programmatic information, these groups may be used to define, automatically, algorithmic skeletons for the concurrent simulation of complex systems. In order to test these hypotheses, a specification model and an accompanying formal notation are developed. The model expresses properties of complex systems in a mixture of object-oriented and process-oriented styles .. The model is then used as the basis for performing both classification and automatic induction of parallel simulation programs. The thesis takes the view that specification models should not be overly complex, especially if the specifications are meant to be executable. Therefore the requirement for explicit consideration of concurrency on the part of specifiers is minimized. The thesis formulates specifications of classes of cellular automata and neural networks according to the proposed model. Procedures for verificati6If - and induction of parallel simulation programs are also included.
- Full Text:
- Date Issued: 1997