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
A critical analysis of the application of total quality management principles in two schools
- Authors: Carlson, Brian Kenneth
- Date: 1996
- Subjects: Total quality management School management and organization -- Case studies School management and organization -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1472 , http://hdl.handle.net/10962/d1003353
- Description: In recent years, the principles of Total Quality Management, developed by Edwards Deming and others and used with varying degrees of success in the business world, have been used in schools as part of the process to transform education in terms of school management and classroom learning. This research grew out of my experiences when St. Andrew's Preparatory School participated in a Total Quality Management training programme which highlighted for me the problems and the benefits of such training. This research was undertaken, therefore, to find out how two other schools - one a high school in Grahamstown and the other a high school in Clarke County, U.S.A. had responded to similar training. Open ended questionnaires were used and the responses were analyzed to detect patterns of thoughts, feelings and attitudes, particularly in terms of human relationships at the school and with regard to various components of school culture. Comparisons were also made between the responses from the two schools, and the findings were compared with the claims made for TQM by the theorists and other educational practitioners who have ventured into TQM in their schools. The research findings indicate that Total Quality Management training had a positive impact on the participating schools but that there are problems associated with its adaptation for education. Given the necessary leadership commitment, however, these problems are not insurmountable. Total Quality Management may well be able to contribute towards the restructing of education which seems to be more and more urgently needed both in South Africa and in their countries.
- Full Text:
- Date Issued: 1996
- Authors: Carlson, Brian Kenneth
- Date: 1996
- Subjects: Total quality management School management and organization -- Case studies School management and organization -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1472 , http://hdl.handle.net/10962/d1003353
- Description: In recent years, the principles of Total Quality Management, developed by Edwards Deming and others and used with varying degrees of success in the business world, have been used in schools as part of the process to transform education in terms of school management and classroom learning. This research grew out of my experiences when St. Andrew's Preparatory School participated in a Total Quality Management training programme which highlighted for me the problems and the benefits of such training. This research was undertaken, therefore, to find out how two other schools - one a high school in Grahamstown and the other a high school in Clarke County, U.S.A. had responded to similar training. Open ended questionnaires were used and the responses were analyzed to detect patterns of thoughts, feelings and attitudes, particularly in terms of human relationships at the school and with regard to various components of school culture. Comparisons were also made between the responses from the two schools, and the findings were compared with the claims made for TQM by the theorists and other educational practitioners who have ventured into TQM in their schools. The research findings indicate that Total Quality Management training had a positive impact on the participating schools but that there are problems associated with its adaptation for education. Given the necessary leadership commitment, however, these problems are not insurmountable. Total Quality Management may well be able to contribute towards the restructing of education which seems to be more and more urgently needed both in South Africa and in their countries.
- Full Text:
- Date Issued: 1996
A sociological analysis of the lives and livelihoods of child support grant caregivers in Queenstown, South Africa
- Authors: Ntantiso, Ziyanda
- Date: 2017
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/7925 , vital:21325
- Description: The post-apartheid state in South Africa has initiated and implemented a large-scale social assistance programme in the form of social grants, including the child support grant. The grant system is meant to provide recipients, who comprise mainly people from poor black households, with the capacity to reduce levels of poverty in their households. The grant with the largest number of recipients is the child support grant, and it is given to the caregiver of a child eligible to receive the grant. Though the value of the monthly grant is minimal, the prevailing literature suggests that it does contribute in some way to enhancing the welfare of the recipients. This thesis focuses on child support grant recipients in the town of Queenstown in the Eastern Cape, and particularly those recipients for whom the grant is the crucial source of income. The main objective of the thesis is to understand and analyse the lives and livelihoods of child support grant recipients (all women) in Queenstown, South Africa. In this regard, the vast majority of caregivers of grant children are women and they often rely exclusively on the grant in taking care of themselves and the children. The thesis does not seek to determine any direct causal relationship between the child grant and poverty reduction, as much of the existing literature seeks to do. It focuses instead on the lives of the grant recipients, including the many challenges they face, as well as how they use the grant to pursue livelihoods in a manner which may at least inhibit the prospects of entering into deeper levels of poverty. The thesis demonstrates that, despite their deprived conditions of material existence, the female caregivers in Queenstown display significant agency in caring for their grant children.
- Full Text:
- Date Issued: 2017
- Authors: Ntantiso, Ziyanda
- Date: 2017
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/7925 , vital:21325
- Description: The post-apartheid state in South Africa has initiated and implemented a large-scale social assistance programme in the form of social grants, including the child support grant. The grant system is meant to provide recipients, who comprise mainly people from poor black households, with the capacity to reduce levels of poverty in their households. The grant with the largest number of recipients is the child support grant, and it is given to the caregiver of a child eligible to receive the grant. Though the value of the monthly grant is minimal, the prevailing literature suggests that it does contribute in some way to enhancing the welfare of the recipients. This thesis focuses on child support grant recipients in the town of Queenstown in the Eastern Cape, and particularly those recipients for whom the grant is the crucial source of income. The main objective of the thesis is to understand and analyse the lives and livelihoods of child support grant recipients (all women) in Queenstown, South Africa. In this regard, the vast majority of caregivers of grant children are women and they often rely exclusively on the grant in taking care of themselves and the children. The thesis does not seek to determine any direct causal relationship between the child grant and poverty reduction, as much of the existing literature seeks to do. It focuses instead on the lives of the grant recipients, including the many challenges they face, as well as how they use the grant to pursue livelihoods in a manner which may at least inhibit the prospects of entering into deeper levels of poverty. The thesis demonstrates that, despite their deprived conditions of material existence, the female caregivers in Queenstown display significant agency in caring for their grant children.
- Full Text:
- Date Issued: 2017
A structural investigation of the sulphated polysaccharide from Aeodes ulvoidea Schmitz
- Allsobrook, Anthony John Robert
- Authors: Allsobrook, Anthony John Robert
- Date: 1973
- Subjects: Red algae -- Composition Polysaccharides
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4437 , http://hdl.handle.net/10962/d1007482
- Description: Aeodes ulvoidea, a red seaweed of the Grateloupiaceae, yielded a highly sulphated polysaccharide which was shown to contain D- and L-galactose, 4-0-methy-L-galactose, 2-0-methyl - D- and L-galactose and 6-0-methyl-D-galactose, together with chromatographic traces of xylose and mannose. The sulphate was not labile to alkali, but it was largely removed with methanolic hydrogen chloride. Periodate oxidation of the polysaccharide, methylation of the de sulphated polysaccharide, and investigation of fifteen oligosaccharides from partial hydrolysis and acetolysis studies of the polysaccharide, indicate that (a) the polysaccharide is composed of a backbone of D-galactose residues which are 1,3- and 1,4-linked (b) at least some regions of alternating structure do occur (c) the 2-0-methylgalactose is linked through the 4-position (d) the 4-0-methyl-L-galactose is present as single unit side chains glycosidically linked to the galactose backbone at position 6, and (e) most of the 6-0-methyl-D-galactose is linked to the 4-position of 2-0-methyl-D-galactose.
- Full Text:
- Date Issued: 1973
- Authors: Allsobrook, Anthony John Robert
- Date: 1973
- Subjects: Red algae -- Composition Polysaccharides
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4437 , http://hdl.handle.net/10962/d1007482
- Description: Aeodes ulvoidea, a red seaweed of the Grateloupiaceae, yielded a highly sulphated polysaccharide which was shown to contain D- and L-galactose, 4-0-methy-L-galactose, 2-0-methyl - D- and L-galactose and 6-0-methyl-D-galactose, together with chromatographic traces of xylose and mannose. The sulphate was not labile to alkali, but it was largely removed with methanolic hydrogen chloride. Periodate oxidation of the polysaccharide, methylation of the de sulphated polysaccharide, and investigation of fifteen oligosaccharides from partial hydrolysis and acetolysis studies of the polysaccharide, indicate that (a) the polysaccharide is composed of a backbone of D-galactose residues which are 1,3- and 1,4-linked (b) at least some regions of alternating structure do occur (c) the 2-0-methylgalactose is linked through the 4-position (d) the 4-0-methyl-L-galactose is present as single unit side chains glycosidically linked to the galactose backbone at position 6, and (e) most of the 6-0-methyl-D-galactose is linked to the 4-position of 2-0-methyl-D-galactose.
- Full Text:
- Date Issued: 1973
Adaptation of the mathematics recovery programme to facilitate progression in the early arithmetic strategies of Grade 2 learners in Zambia
- Authors: Young, Catherine
- Date: 2017
- Subjects: Mathematics -- Study and teaching (Elementary) -- Zambia Arithmetic -- Study and teaching (Elementary) -- Zambia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/4977 , vital:20749
- Description: Research indicates that many children finish primary school in Southern Africa still reliant on inefficient counting strategies. This study extends the research of the South African Numeracy Chair project to early mathematics intervention with Grade 2 learners. It investigated the possible adaptation of the Mathematics Recovery programme to facilitate learner progression in early arithmetic strategies. This study aimed to investigate the possibility of adapting the Mathematics Recovery programme for use in a whole class setting, and to research the effectiveness of such an adapted programme. This study also aimed to investigate the extent of the phenomenon of unit counting and other early arithmetic strategies used in the early years in Zambia. This study was conducted from an emergent perspective. A review of the literature indicated that children who become stuck using unit counting face later mathematical difficulties, and that teacher over-emphasis on unit counting in the early years of schooling may be a contributing factor. This study used a qualitative design research methodology that consisted of a preparation phase, teaching experiment and retrospective analysis. The context of this teaching experiment was a seven week after-school intervention with a class of Grade 2 learners aged seven to eight in a rural Zambian primary school. Data collection and analysis focused on video recordings of a sample of 6 learners. The experimental teaching content focused on the Early Arithmetic Strategies aspect of the Mathematics Recovery programme. Although limited by time and research focus, this study found that all learners made some progress in early arithmetic strategies, and indicates that the Mathematics Recovery programme has potential for adaptation for early intervention in whole class teaching to address the mathematical education challenges in Zambia and beyond. This study also found that unit counting predominated in the sample learners, but that strategies were not yet entrenched, indicating this was a suitable age for early intervention. This study makes methodological contributions to a growing body of research into the adaptation of the Mathematics Recovery in Southern African contexts and suggests avenues for possible further research.
- Full Text:
- Date Issued: 2017
- Authors: Young, Catherine
- Date: 2017
- Subjects: Mathematics -- Study and teaching (Elementary) -- Zambia Arithmetic -- Study and teaching (Elementary) -- Zambia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/4977 , vital:20749
- Description: Research indicates that many children finish primary school in Southern Africa still reliant on inefficient counting strategies. This study extends the research of the South African Numeracy Chair project to early mathematics intervention with Grade 2 learners. It investigated the possible adaptation of the Mathematics Recovery programme to facilitate learner progression in early arithmetic strategies. This study aimed to investigate the possibility of adapting the Mathematics Recovery programme for use in a whole class setting, and to research the effectiveness of such an adapted programme. This study also aimed to investigate the extent of the phenomenon of unit counting and other early arithmetic strategies used in the early years in Zambia. This study was conducted from an emergent perspective. A review of the literature indicated that children who become stuck using unit counting face later mathematical difficulties, and that teacher over-emphasis on unit counting in the early years of schooling may be a contributing factor. This study used a qualitative design research methodology that consisted of a preparation phase, teaching experiment and retrospective analysis. The context of this teaching experiment was a seven week after-school intervention with a class of Grade 2 learners aged seven to eight in a rural Zambian primary school. Data collection and analysis focused on video recordings of a sample of 6 learners. The experimental teaching content focused on the Early Arithmetic Strategies aspect of the Mathematics Recovery programme. Although limited by time and research focus, this study found that all learners made some progress in early arithmetic strategies, and indicates that the Mathematics Recovery programme has potential for adaptation for early intervention in whole class teaching to address the mathematical education challenges in Zambia and beyond. This study also found that unit counting predominated in the sample learners, but that strategies were not yet entrenched, indicating this was a suitable age for early intervention. This study makes methodological contributions to a growing body of research into the adaptation of the Mathematics Recovery in Southern African contexts and suggests avenues for possible further research.
- Full Text:
- Date Issued: 2017
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
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
An investigation into the extent and nature of the understanding first year college of education students have of aspects of arithematic and elementary number theory
- Authors: Oliphant, Vincent George
- Date: 1996
- Subjects: Mathematics teachers -- Training of Mathematics -- Study and teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1606 , http://hdl.handle.net/10962/d1003488
- Description: First Year College of Education students who have done and/or passed mathematics at matric level, often lack adequate understanding of basic mathematical concepts and principles. This is due to the fact that formal tests and examinations often fail to assess understanding at anything but a basic level. It is against this background that this study uses alternative and more direct means of assessing the level and nature of the understanding such students have of aspects of basic arithmetic and number theory. More specifically, the goals of the study are: 1. To determine the students' levels of understanding of the following number concepts: Rational numbers; Irrational numbers Real numbers and Imaginary numbers. 2. To determine whether the students understand the rules governing operations with negative numbers and with zero as principles rather than conventions. 3. To determine whether the students understand the rule governing the order of operations as a matter of convention rather than as a matter of principle. A survey of the literature concerning the nature of understanding as well as the nature of assessment is given. The students' understanding in the above areas was assessed by means of a written test followid by interviews. A sample of 50 students participated in the study while a sub-sample of 6 were interviewed. Some of the significant findings of the study were : 1. The students largely failed to draw clear distinctions between Real and Rational numbers as well as between Irrational and Imaginary numbers. 2. Very few of the students could explain the rationale behind the rules governing the. operations with negative numbers and zero. 3. Only half of the students had any knowledge of the rule governing the order of operations. Only one student demonstrated an understanding of the rule as a convention.
- Full Text:
- Date Issued: 1996
- Authors: Oliphant, Vincent George
- Date: 1996
- Subjects: Mathematics teachers -- Training of Mathematics -- Study and teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1606 , http://hdl.handle.net/10962/d1003488
- Description: First Year College of Education students who have done and/or passed mathematics at matric level, often lack adequate understanding of basic mathematical concepts and principles. This is due to the fact that formal tests and examinations often fail to assess understanding at anything but a basic level. It is against this background that this study uses alternative and more direct means of assessing the level and nature of the understanding such students have of aspects of basic arithmetic and number theory. More specifically, the goals of the study are: 1. To determine the students' levels of understanding of the following number concepts: Rational numbers; Irrational numbers Real numbers and Imaginary numbers. 2. To determine whether the students understand the rules governing operations with negative numbers and with zero as principles rather than conventions. 3. To determine whether the students understand the rule governing the order of operations as a matter of convention rather than as a matter of principle. A survey of the literature concerning the nature of understanding as well as the nature of assessment is given. The students' understanding in the above areas was assessed by means of a written test followid by interviews. A sample of 50 students participated in the study while a sub-sample of 6 were interviewed. Some of the significant findings of the study were : 1. The students largely failed to draw clear distinctions between Real and Rational numbers as well as between Irrational and Imaginary numbers. 2. Very few of the students could explain the rationale behind the rules governing the. operations with negative numbers and zero. 3. Only half of the students had any knowledge of the rule governing the order of operations. Only one student demonstrated an understanding of the rule as a convention.
- Full Text:
- Date Issued: 1996
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
An investigation into the popularity of Zimbabwe's first health communication soap opera, Studio 263 : a qualitative reception study of Bulawayo students aged between 15 and 20 years
- Authors: Bhebhe-Mpofu, Adilaid
- Date: 2007 , 2014-08-18
- Subjects: Studio 263 (Television program) , Television soap operas -- Zimbabwe , Television viewers -- Zimbabwe , Mass media and children -- Zimbabwe , Television and children -- Zimbabwe , AIDS (Disease) -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3531 , http://hdl.handle.net/10962/d1013310
- Description: Within the context of debates concerning the reception and interpretation of media texts by television audiences, this qualitative reception study explores how a sample of Bulawayo students negotiate meanings from Zimbabwe's first health communication soap opera, Studio 263. The study thus examines the reasons behind the popularity of this programme with this target audience. The findings of the study reveal that meaning making is a complex process that is dependent on a variety of factors which include, among others, the socio-cultural context of media consumption, gender, economic disposition and age. It particularly maintains that gender and lived realities influence the interpretation and negotiation of meanings in this particular study. , Adobe Acrobat Pro 11.0.0 Paper Capture Plug-in
- Full Text:
- Date Issued: 2007
- Authors: Bhebhe-Mpofu, Adilaid
- Date: 2007 , 2014-08-18
- Subjects: Studio 263 (Television program) , Television soap operas -- Zimbabwe , Television viewers -- Zimbabwe , Mass media and children -- Zimbabwe , Television and children -- Zimbabwe , AIDS (Disease) -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3531 , http://hdl.handle.net/10962/d1013310
- Description: Within the context of debates concerning the reception and interpretation of media texts by television audiences, this qualitative reception study explores how a sample of Bulawayo students negotiate meanings from Zimbabwe's first health communication soap opera, Studio 263. The study thus examines the reasons behind the popularity of this programme with this target audience. The findings of the study reveal that meaning making is a complex process that is dependent on a variety of factors which include, among others, the socio-cultural context of media consumption, gender, economic disposition and age. It particularly maintains that gender and lived realities influence the interpretation and negotiation of meanings in this particular study. , Adobe Acrobat Pro 11.0.0 Paper Capture Plug-in
- 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
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
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
Evaluation of physiochemical qualities and heavy metal levels of the final effluents of some wastewater treatment facilities in the Eastern Cape Province of South Africa
- Authors: Kulati, Thanduxolo Cullinan
- Date: 2016
- Subjects: Water -- Purification Sewage -- Purification
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/1547 , vital:27417
- Description: Water is the most abundant substance in nature and vital for life activities. The major water sources for use are surface water bodies such as rivers and lakes, and underground aquifers and pore spaces down the water table (Ring, 2003). Water derived from these sources is not necessarily pure since it contains dissolved inorganic and organic substances, living organisms (viruses, bacteria, etc). For these reasons, water intended for domestic uses should be free from toxic substances and microorganisms that are of health significance (WHO, 2005). The availability and quality of water always have played an important role in determining the quality of life. Water quality is closely linked to water use and to the state of economic development (Chennakrishnan et al., 2008). Ground and surface waters can be contaminated by several sources. In urban areas, the careless disposal of industrial effluents and other wastes may contribute greatly to the poor quality of water (Mathuthu et al., 1997). In most developing countries, most areas are located on the watersheds which are the end points of effluents discharged from various industries (Oberholster and Ashton, 2008). South Africa, as a developing country, is experiencing rapid demographic changes due to urbanization, industrialization and population growth. The country has also been identified as being water-scarce, which can lead to a challenge of meeting the increasing water demand due to industrialization and urbanization. Such population growth increase may result in an increase in wastewater output, especially around urban areas.
- Full Text:
- Date Issued: 2016
- Authors: Kulati, Thanduxolo Cullinan
- Date: 2016
- Subjects: Water -- Purification Sewage -- Purification
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/1547 , vital:27417
- Description: Water is the most abundant substance in nature and vital for life activities. The major water sources for use are surface water bodies such as rivers and lakes, and underground aquifers and pore spaces down the water table (Ring, 2003). Water derived from these sources is not necessarily pure since it contains dissolved inorganic and organic substances, living organisms (viruses, bacteria, etc). For these reasons, water intended for domestic uses should be free from toxic substances and microorganisms that are of health significance (WHO, 2005). The availability and quality of water always have played an important role in determining the quality of life. Water quality is closely linked to water use and to the state of economic development (Chennakrishnan et al., 2008). Ground and surface waters can be contaminated by several sources. In urban areas, the careless disposal of industrial effluents and other wastes may contribute greatly to the poor quality of water (Mathuthu et al., 1997). In most developing countries, most areas are located on the watersheds which are the end points of effluents discharged from various industries (Oberholster and Ashton, 2008). South Africa, as a developing country, is experiencing rapid demographic changes due to urbanization, industrialization and population growth. The country has also been identified as being water-scarce, which can lead to a challenge of meeting the increasing water demand due to industrialization and urbanization. Such population growth increase may result in an increase in wastewater output, especially around urban areas.
- Full Text:
- Date Issued: 2016
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
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
Farmers' perceptions of insect pests in the Eastern Cape maize-based cropping systems and the effects of crop residue management on insect pest populations
- Authors: Kadango, Tendayi Lovemore
- Date: 2018
- Subjects: Cropping systems Crop residue management Corn -- Diseases and pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/6202 , vital:29507
- Description: Maize (Zea mays L.) is one of the most important crops in South Africa that is cultivated for food, feed and as a cash crop. Maize in the Eastern Cape is typically grown for consumption and the Province is one of the least producers owing to small landholdings, poor production conditions and pests. This study investigated: (i) the different maize cropping systems smallholder farmers practice in the Eastern Cape (EC), (ii) the major maize insect pests within the identified cropping systems, (iii) the perceptions of Eastern Cape smallholder maize farmers on the effects of insect pests, and (iv) the effects of crop residues on insect pests’ population dynamics. Four major cropping systems namely: maize sole cropping without rotations by government sponsored farmers (GCP) (94 percent), maize intercropping without rotations by independent farmers (IF) (79 percent), maize sole cropping without rotations by IF (67 percent) and maize intercropping without rotations by GCP (61 percent) were identified. The choice of a cropping system by the smallholder farmers was significantly influenced by source of sponsorship, the difference in their district localities, tenure system, availability of inputs and farming equipment, percentage of farmland farmers allocate to maize, maize varieties, farming experience, fallow operations and access to irrigation facilities. The major constraints faced by the farmers in maize production are the attack by insect pests, weeds competition, drought, the lack of fencing around the fields and destruction by mammals. The major insect pests identified were stalk borers (Busseola fusca, Chilo partellus), cutworms (Agrotis spp.), aphids (Rhopalosiphum maidis), bollworms (Helicoverpa armigera) and weevils (Sitophylus spp.). The most popular control measures employed were the use of GM maize and pesticides. Results from the field trial showed that field crickets were the major ground dwelling insect pests observed followed by bollworms and cutworms. However, there were no significant influence of residue retention on the insects’ diversity indices, richness, and evenness. Above ground insects sampling revealed the domination by four major insects namely, cutworms, maize stalk borer, bollworms, and spotted stalk borer. Residue management significantly influenced the infestation by spotted stalk borer only on maize plots. However, the general trend was that there was less infestation by the insects in plots where residues were retained than the ones with residue removed. Results from the study indicate that government sponsorship is significantly influencing the maize cropping systems of the smallholder farmers of the Eastern Cape.
- Full Text:
- Date Issued: 2018
- Authors: Kadango, Tendayi Lovemore
- Date: 2018
- Subjects: Cropping systems Crop residue management Corn -- Diseases and pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/6202 , vital:29507
- Description: Maize (Zea mays L.) is one of the most important crops in South Africa that is cultivated for food, feed and as a cash crop. Maize in the Eastern Cape is typically grown for consumption and the Province is one of the least producers owing to small landholdings, poor production conditions and pests. This study investigated: (i) the different maize cropping systems smallholder farmers practice in the Eastern Cape (EC), (ii) the major maize insect pests within the identified cropping systems, (iii) the perceptions of Eastern Cape smallholder maize farmers on the effects of insect pests, and (iv) the effects of crop residues on insect pests’ population dynamics. Four major cropping systems namely: maize sole cropping without rotations by government sponsored farmers (GCP) (94 percent), maize intercropping without rotations by independent farmers (IF) (79 percent), maize sole cropping without rotations by IF (67 percent) and maize intercropping without rotations by GCP (61 percent) were identified. The choice of a cropping system by the smallholder farmers was significantly influenced by source of sponsorship, the difference in their district localities, tenure system, availability of inputs and farming equipment, percentage of farmland farmers allocate to maize, maize varieties, farming experience, fallow operations and access to irrigation facilities. The major constraints faced by the farmers in maize production are the attack by insect pests, weeds competition, drought, the lack of fencing around the fields and destruction by mammals. The major insect pests identified were stalk borers (Busseola fusca, Chilo partellus), cutworms (Agrotis spp.), aphids (Rhopalosiphum maidis), bollworms (Helicoverpa armigera) and weevils (Sitophylus spp.). The most popular control measures employed were the use of GM maize and pesticides. Results from the field trial showed that field crickets were the major ground dwelling insect pests observed followed by bollworms and cutworms. However, there were no significant influence of residue retention on the insects’ diversity indices, richness, and evenness. Above ground insects sampling revealed the domination by four major insects namely, cutworms, maize stalk borer, bollworms, and spotted stalk borer. Residue management significantly influenced the infestation by spotted stalk borer only on maize plots. However, the general trend was that there was less infestation by the insects in plots where residues were retained than the ones with residue removed. Results from the study indicate that government sponsorship is significantly influencing the maize cropping systems of the smallholder farmers of the Eastern Cape.
- Full Text:
- Date Issued: 2018
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
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
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