The potential use of e-learning to support teaching, learning and assessment in Information Systems at Walter Sisulu University
- Authors: Sabalele, Tabisa
- Date: 2008
- Subjects: Walter Sisulu University for Technology & Science Information technology -- Study and teaching (Higher) -- South Africa Educational technology -- South Africa Education, Higher -- Computer-assisted instruction Universities and colleges -- Computer networking Computer-assisted instruction -- South Africa Internet in higher education Educational tests and measurements
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1899 , http://hdl.handle.net/10962/d1006209
- Description: This research is an investigation of the potential means to make the Information Systems (IS) course more accessible to Walter Sisulu University (WSU) students. As some IS students at this institution are unable to attend classes on a regular basis, this study aims to establish if and how the WSU Accounting Department (which offers the IS course) could use e-Iearning to support the teaching, learning and assessment of IS. This qualitative study was approached from an interpretive perspective. The study has undergone one cycle of an action research approach. The methods used in the study include surveys, an expert review and focus group interviews. The data was elicited from participants using questionnaires and an interview schedule. A staff questionnaire was used to elicit information from IS staff from four contact universities in South Africa to determine their experience of using Information and Communication Technology (ICT) for e-learning in an IS course. A student questionnaire was used to determine the WSU IS students' reasons for absenteeism, their learning needs, and their current computer access and skills. Data from both of these surveys informed the development of the WSU IS pilot website. An expert review questionnaire ascertained the subject expert's opinions about the newly developed WSU IS pilot website. The website was found to be of good quality with respect to the four aspects that Harvey and Green (J 993 cited in Lomas 2002) use to define quality. Some modifications were made to the WSU IS pilot website as a result of the expert's comments. After the website was used by the IS students, two focus group interviews were conducted to determine the students' perceptions of the value of the website. The data was analyzed, interpreted and linked to the literature surveyed. The main findings indicate that the WSU IS pilot website could be part of a more globalised higher education offering than the paper-based IS course offered before. However, the staff and the student surveys revealed that ICT has opened the gap in equity at the higher education institutions, highlighting that access to a university does not mean equal access to lectures and computers. The WSU IS pilot website endeavoured to capitalise on students' physical access to computers by supporting epistemological access to the curriculum, by encouraging them to exercise control over their learning. This study has ideally enabled the Accounting Department to deliver its services to students and this in turn will hopefully help WSU retain its part-time students and improve the student pass rates.
- Full Text:
- Date Issued: 2008
- Authors: Sabalele, Tabisa
- Date: 2008
- Subjects: Walter Sisulu University for Technology & Science Information technology -- Study and teaching (Higher) -- South Africa Educational technology -- South Africa Education, Higher -- Computer-assisted instruction Universities and colleges -- Computer networking Computer-assisted instruction -- South Africa Internet in higher education Educational tests and measurements
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1899 , http://hdl.handle.net/10962/d1006209
- Description: This research is an investigation of the potential means to make the Information Systems (IS) course more accessible to Walter Sisulu University (WSU) students. As some IS students at this institution are unable to attend classes on a regular basis, this study aims to establish if and how the WSU Accounting Department (which offers the IS course) could use e-Iearning to support the teaching, learning and assessment of IS. This qualitative study was approached from an interpretive perspective. The study has undergone one cycle of an action research approach. The methods used in the study include surveys, an expert review and focus group interviews. The data was elicited from participants using questionnaires and an interview schedule. A staff questionnaire was used to elicit information from IS staff from four contact universities in South Africa to determine their experience of using Information and Communication Technology (ICT) for e-learning in an IS course. A student questionnaire was used to determine the WSU IS students' reasons for absenteeism, their learning needs, and their current computer access and skills. Data from both of these surveys informed the development of the WSU IS pilot website. An expert review questionnaire ascertained the subject expert's opinions about the newly developed WSU IS pilot website. The website was found to be of good quality with respect to the four aspects that Harvey and Green (J 993 cited in Lomas 2002) use to define quality. Some modifications were made to the WSU IS pilot website as a result of the expert's comments. After the website was used by the IS students, two focus group interviews were conducted to determine the students' perceptions of the value of the website. The data was analyzed, interpreted and linked to the literature surveyed. The main findings indicate that the WSU IS pilot website could be part of a more globalised higher education offering than the paper-based IS course offered before. However, the staff and the student surveys revealed that ICT has opened the gap in equity at the higher education institutions, highlighting that access to a university does not mean equal access to lectures and computers. The WSU IS pilot website endeavoured to capitalise on students' physical access to computers by supporting epistemological access to the curriculum, by encouraging them to exercise control over their learning. This study has ideally enabled the Accounting Department to deliver its services to students and this in turn will hopefully help WSU retain its part-time students and improve the student pass rates.
- Full Text:
- Date Issued: 2008
A study of professionalism and the professionalisation of journalists in Uganda from 1995 to 2008
- Authors: Mayiga, John Bosco
- Date: 2008
- Subjects: Journalists -- Uganda Journalism -- Political aspects -- Uganda Mass media -- Political aspects -- Uganda Journalism -- Sociological aspects -- Uganda Journalism, Commercial -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3461 , http://hdl.handle.net/10962/d1002916
- Description: This study seeks to examine how Ugandan journalists’ and politicians’ views on journalism professionalisation in Uganda relate to the broad theoretical arguments about professionalism within sociology and media studies. It also seeks to examine how such views impact on the democratic role of the media. The study finds out that there are two sets of distinct ideas on journalism professionalisation. The idea espoused by politicians is statutory professionalisation in which the state plays a major role through regulation and control, hence professionalisation is seen primarily as a control system. On the other hand, journalists perceive professionalisation as nurtured by voluntarily and socially inculcated professional values, hence as a value system. The study however, finds that both sets of understandings have their own complexities. While the statutory approach has complexities like how core elements of professionalism such as professional values can be imposed through legislation, the voluntary approach to professionalism also exhibits tensions within, especially stemming from the relationship between the professional and the news organisation regarding what constitutes professionalism. The study concludes that both sets of ideas have implications for the democratic role of the media, with both perceptions of professionalism curtailing this role. Statutory professionalisation in the Ugandan political context where the state is the dominant institution brings media institutions within its control, which leads to suppression of content of democratic value through a number of means. On the other hand, the self-regulatory perception does not protect media professionalism from the assault of commercial imperatives, especially when fused with state patronage in regard to broadcasting licences and placement of advertising.
- Full Text:
- Date Issued: 2008
- Authors: Mayiga, John Bosco
- Date: 2008
- Subjects: Journalists -- Uganda Journalism -- Political aspects -- Uganda Mass media -- Political aspects -- Uganda Journalism -- Sociological aspects -- Uganda Journalism, Commercial -- Uganda
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3461 , http://hdl.handle.net/10962/d1002916
- Description: This study seeks to examine how Ugandan journalists’ and politicians’ views on journalism professionalisation in Uganda relate to the broad theoretical arguments about professionalism within sociology and media studies. It also seeks to examine how such views impact on the democratic role of the media. The study finds out that there are two sets of distinct ideas on journalism professionalisation. The idea espoused by politicians is statutory professionalisation in which the state plays a major role through regulation and control, hence professionalisation is seen primarily as a control system. On the other hand, journalists perceive professionalisation as nurtured by voluntarily and socially inculcated professional values, hence as a value system. The study however, finds that both sets of understandings have their own complexities. While the statutory approach has complexities like how core elements of professionalism such as professional values can be imposed through legislation, the voluntary approach to professionalism also exhibits tensions within, especially stemming from the relationship between the professional and the news organisation regarding what constitutes professionalism. The study concludes that both sets of ideas have implications for the democratic role of the media, with both perceptions of professionalism curtailing this role. Statutory professionalisation in the Ugandan political context where the state is the dominant institution brings media institutions within its control, which leads to suppression of content of democratic value through a number of means. On the other hand, the self-regulatory perception does not protect media professionalism from the assault of commercial imperatives, especially when fused with state patronage in regard to broadcasting licences and placement of advertising.
- Full Text:
- Date Issued: 2008
The "other" Africans : re-examining representations of sexuality in the work of Nicholas Hlobo and Zanele Muholi
- Authors: Makhubu, Nomusa
- Date: 2008
- Subjects: Hlobo, Nicholas Muholi, Zanele Women in art Photography, Artistic Homosexuality in art Sex in art Performance art Art, African
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2410 , http://hdl.handle.net/10962/d1002206
- Description: Nicholas Hlobo, a sculptor and performance artist, and Zanele Muholi, a photographer and activist, explore different ways of representing sexuality, particularly homosexuality. It is extremely difficult to discuss African sexuality in light of the stain of colonial attitudes that have exoticised and ascribed hypersexuality to African bodies. Moreover, sexuality is often not discussed in the construction of so-called African traditions and this has contributed to rendering African-ness as an exclusive identity. Tensions within and between categories of African-ness are compounded by constituted regulations. For example, Hlobo investigates the obligation of circumcision which seems to contrast the lifestyle and contexts in which he works and resides, and Muholi represents the existence of homosexual and transgender relations, even within conservative categories. The visual imagery of these two artists investigates the boundaries set by different social constructs. These set boundaries have also affected crimes against bisexual, transgender and homosexual individuals, which are reaching an alarming rate. Hlobo questions the validity of structures that marginalise homosexual individuals through drawing attention to the ambivalence of certain statutes. Muholi seeks to publicise the injustices imposed upon homosexual individuals in order to demonstrate the weight of that crisis. Although the South African legal system condones liberated expressions of sexual identity, due to social prejudices homosexual individuals are still treated as if they are not entitled to basic human rights. As a result, hate-crimes are not reported, and when they are they are not taken seriously. Hlobo and Muholi not only bring these issues to light, but also point out the dilemma inscribed in the social and political history of (South) Africa with regards to collective and individual identities. This thesis seeks to provide an analysis of the visual language used by Hlobo and Muholi to subvert the notion that homosexuality is “un-African” and to complicate concepts of gender, sexuality and identity.
- Full Text:
- Date Issued: 2008
- Authors: Makhubu, Nomusa
- Date: 2008
- Subjects: Hlobo, Nicholas Muholi, Zanele Women in art Photography, Artistic Homosexuality in art Sex in art Performance art Art, African
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2410 , http://hdl.handle.net/10962/d1002206
- Description: Nicholas Hlobo, a sculptor and performance artist, and Zanele Muholi, a photographer and activist, explore different ways of representing sexuality, particularly homosexuality. It is extremely difficult to discuss African sexuality in light of the stain of colonial attitudes that have exoticised and ascribed hypersexuality to African bodies. Moreover, sexuality is often not discussed in the construction of so-called African traditions and this has contributed to rendering African-ness as an exclusive identity. Tensions within and between categories of African-ness are compounded by constituted regulations. For example, Hlobo investigates the obligation of circumcision which seems to contrast the lifestyle and contexts in which he works and resides, and Muholi represents the existence of homosexual and transgender relations, even within conservative categories. The visual imagery of these two artists investigates the boundaries set by different social constructs. These set boundaries have also affected crimes against bisexual, transgender and homosexual individuals, which are reaching an alarming rate. Hlobo questions the validity of structures that marginalise homosexual individuals through drawing attention to the ambivalence of certain statutes. Muholi seeks to publicise the injustices imposed upon homosexual individuals in order to demonstrate the weight of that crisis. Although the South African legal system condones liberated expressions of sexual identity, due to social prejudices homosexual individuals are still treated as if they are not entitled to basic human rights. As a result, hate-crimes are not reported, and when they are they are not taken seriously. Hlobo and Muholi not only bring these issues to light, but also point out the dilemma inscribed in the social and political history of (South) Africa with regards to collective and individual identities. This thesis seeks to provide an analysis of the visual language used by Hlobo and Muholi to subvert the notion that homosexuality is “un-African” and to complicate concepts of gender, sexuality and identity.
- Full Text:
- Date Issued: 2008
WISC-IV performance of South African grade 7 English and Xhosa speaking children with advantaged versus disadvantaged education
- Authors: Van Tonder, Phia
- Date: 2008
- Subjects: Wechsler Intelligence Scale for Children Intelligence tests -- South Africa Educational tests and measurements -- South Africa Psychological tests -- Cross-cultural studies Educational psychology -- South Africa Language and languages -- Ability testing Educational evaluation -- South Africa Education, Elementary -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3098 , http://hdl.handle.net/10962/d1003920
- Description: Research reveals that the level as well as the quality of education plays a role in the determination of an individual's intellectual capacity. Substantial differences in quality of education for black and white individuals were experienced in South Africa due to Apartheid. Compared to the traditionally white Private and Model C schools, Township/ DET schools had limited resources, as well as a separate syllabus and examination system, a situation that has not improved substantially since democratisation in 1994. Research on black South African adults with the WAIS-III has confirmed significant influences on IQ in association with exposure to either such advantaged (Private/Model C) schooling, or disadvantaged (Township/DET) schooling. However to date there has been no published research on the use of the Wechsler intelligence tests on a black South African child population similarly stratified for quality of education. Therefore, for the purposes of this study, the latest Wechsler Intelligence Scale for Children (WISC-IV) was administered to a sample of 36 Grade 7 learners between the ages of 12-13 (mean 13.01 years), stratified for quality of education to form three comparative groups. Data analyses revealed significant differences on the WISC-IV Factor Indices and Full Scale IQ with the English speaking Private/Model C school group performing the best, followed by the Xhosa speaking Private/ Model C school group, and the Xhosa speaking Township/ DET school group performing the worst. This continuum of lowering is understood to occur abreast of a continuum of decreased exposure to relatively advantaged education. These normative indications are considered to have vital implications for the use of the WISC-IV in the South African cross-cultural situation where vastly differential educational opportunities continue to exist.
- Full Text:
- Date Issued: 2008
- Authors: Van Tonder, Phia
- Date: 2008
- Subjects: Wechsler Intelligence Scale for Children Intelligence tests -- South Africa Educational tests and measurements -- South Africa Psychological tests -- Cross-cultural studies Educational psychology -- South Africa Language and languages -- Ability testing Educational evaluation -- South Africa Education, Elementary -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3098 , http://hdl.handle.net/10962/d1003920
- Description: Research reveals that the level as well as the quality of education plays a role in the determination of an individual's intellectual capacity. Substantial differences in quality of education for black and white individuals were experienced in South Africa due to Apartheid. Compared to the traditionally white Private and Model C schools, Township/ DET schools had limited resources, as well as a separate syllabus and examination system, a situation that has not improved substantially since democratisation in 1994. Research on black South African adults with the WAIS-III has confirmed significant influences on IQ in association with exposure to either such advantaged (Private/Model C) schooling, or disadvantaged (Township/DET) schooling. However to date there has been no published research on the use of the Wechsler intelligence tests on a black South African child population similarly stratified for quality of education. Therefore, for the purposes of this study, the latest Wechsler Intelligence Scale for Children (WISC-IV) was administered to a sample of 36 Grade 7 learners between the ages of 12-13 (mean 13.01 years), stratified for quality of education to form three comparative groups. Data analyses revealed significant differences on the WISC-IV Factor Indices and Full Scale IQ with the English speaking Private/Model C school group performing the best, followed by the Xhosa speaking Private/ Model C school group, and the Xhosa speaking Township/ DET school group performing the worst. This continuum of lowering is understood to occur abreast of a continuum of decreased exposure to relatively advantaged education. These normative indications are considered to have vital implications for the use of the WISC-IV in the South African cross-cultural situation where vastly differential educational opportunities continue to exist.
- Full Text:
- Date Issued: 2008
Home range dynamics of spotted grunter, pomadasys commersonnii, in a South African intermittently open estuary
- Authors: O'Connell, Bronwyn Anne
- Date: 2008
- Subjects: Grunts (Fishes) -- South Africa -- Eastern Cape , Pomadasys -- South Africa -- Eastern Cape , Estuaries -- South Africa -- Eastern Cape , Estuarine fishes -- South Africa -- Eastern Cape , Estuarine fishes -- Habitat -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fishes -- Home range , Fishes -- Home range -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5286 , http://hdl.handle.net/10962/d1005130 , Grunts (Fishes) -- South Africa -- Eastern Cape , Pomadasys -- South Africa -- Eastern Cape , Estuaries -- South Africa -- Eastern Cape , Estuarine fishes -- South Africa -- Eastern Cape , Estuarine fishes -- Habitat -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fishes -- Home range , Fishes -- Home range -- South Africa -- Eastern Cape
- Description: The spotted grunter (Pomadasys commersonnii) is an important, estuarine-dependent, fishery species in southern Africa. Since estuaries are essential habitats in the life history of this species, the quantification of area use patterns and movements is important for fisheries management. In this study, acoustic telemetry was used to investigate movements, use of habitat and home range dynamics of spotted grunter in the small intermittently open East Kleinemonde Estuary on the Eastern Cape coast of South Africa. Nine spotted grunter (range: 326-489mm TL) were surgically equipped with uniquely coded acoustic transmitters. Positional fixes were obtained by manual tracking tagged individuals on six days and six nights during five tracking sessions from March to November 2004. In addition, five stationary data-logging receivers, moored at specific locations from the mouth to the top of the estuary provided additional long-term monitoring. Kernel home ranges (95% UD) varied in size (26 296-165 321m²) but were all located in a common high use area situated between 300-1 300m from the estuary mouth, which coincided with the highest abundance of prey items. There was no significant variation in home range size [C² (N = 9, df = 4) = 4.18; p = 0.38] between the temporally segregated tracking sessions (over nine months). The persistence of these home range estimates were confirmed by the long-term data-logging receivers. There was no significant diel variation in home range size [F(4, 64) = 0.05, p = 0.99] or core area size [F(4, 64) = 1.40, p = 0.25]. Fish length showed negative, although not significant, relationships between home range size (p = 0.225); number of home range areas (p = 0.065); core area size (p = 0.512) and home range length (p = 0.320). Use of habitat and home range dynamics of spotted grunter in the East Kleinemonde Estuary were consistent over the nine month study period, and they appeared to be influenced more by biotic than abiotic factors. However, when the mouth opened at the end of the study, most tagged fish vacated their home ranges and emigrated to sea.
- Full Text:
- Date Issued: 2008
- Authors: O'Connell, Bronwyn Anne
- Date: 2008
- Subjects: Grunts (Fishes) -- South Africa -- Eastern Cape , Pomadasys -- South Africa -- Eastern Cape , Estuaries -- South Africa -- Eastern Cape , Estuarine fishes -- South Africa -- Eastern Cape , Estuarine fishes -- Habitat -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fishes -- Home range , Fishes -- Home range -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5286 , http://hdl.handle.net/10962/d1005130 , Grunts (Fishes) -- South Africa -- Eastern Cape , Pomadasys -- South Africa -- Eastern Cape , Estuaries -- South Africa -- Eastern Cape , Estuarine fishes -- South Africa -- Eastern Cape , Estuarine fishes -- Habitat -- South Africa -- Eastern Cape , Fishery management -- South Africa -- Eastern Cape , Fishes -- Home range , Fishes -- Home range -- South Africa -- Eastern Cape
- Description: The spotted grunter (Pomadasys commersonnii) is an important, estuarine-dependent, fishery species in southern Africa. Since estuaries are essential habitats in the life history of this species, the quantification of area use patterns and movements is important for fisheries management. In this study, acoustic telemetry was used to investigate movements, use of habitat and home range dynamics of spotted grunter in the small intermittently open East Kleinemonde Estuary on the Eastern Cape coast of South Africa. Nine spotted grunter (range: 326-489mm TL) were surgically equipped with uniquely coded acoustic transmitters. Positional fixes were obtained by manual tracking tagged individuals on six days and six nights during five tracking sessions from March to November 2004. In addition, five stationary data-logging receivers, moored at specific locations from the mouth to the top of the estuary provided additional long-term monitoring. Kernel home ranges (95% UD) varied in size (26 296-165 321m²) but were all located in a common high use area situated between 300-1 300m from the estuary mouth, which coincided with the highest abundance of prey items. There was no significant variation in home range size [C² (N = 9, df = 4) = 4.18; p = 0.38] between the temporally segregated tracking sessions (over nine months). The persistence of these home range estimates were confirmed by the long-term data-logging receivers. There was no significant diel variation in home range size [F(4, 64) = 0.05, p = 0.99] or core area size [F(4, 64) = 1.40, p = 0.25]. Fish length showed negative, although not significant, relationships between home range size (p = 0.225); number of home range areas (p = 0.065); core area size (p = 0.512) and home range length (p = 0.320). Use of habitat and home range dynamics of spotted grunter in the East Kleinemonde Estuary were consistent over the nine month study period, and they appeared to be influenced more by biotic than abiotic factors. However, when the mouth opened at the end of the study, most tagged fish vacated their home ranges and emigrated to sea.
- Full Text:
- Date Issued: 2008
'The Most Amazing Show': performative interactions with postelection South African society and culture
- Authors: Scholtz, Brink
- Date: 2008
- Subjects: Performing arts , Drama -- Study and teaching , Recreational activities
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/57527 , vital:26963
- Description: This research investigates contemporary South African performance within the context of prominent social and cultural change following the political transition from an apartheid state to democracy. Specifically, it looks at the relationship between a popular comic variety show The Most Amazing Show (TMAS), and aspects of contemporary South African society and culture, particularly relating to prominent efforts to affect post-election transformation of South African society and culture through the construction of a South African 'rainbow nation'. By analysing TMAS in terms of broader historical, performative and discursive contexts, it engages a relational reading of the performance. The study argues that TMAS both challenges and participates in the manner in which rainbow nation discourse constructs South African society and culture. Firstly, it considers the performance's construction of hybrid South African identities, including white Afrikaans, white English and white masculine identities. It argues that these reconstructions undermine the tendency within rainbow nation discourse to construct cultural hybridity in terms of stereotypically distinct identities. Secondly, it considers TMAS' construction of collective experience and social integration, which subverts the often glamorised and superficial representations of social healing and integration that are constructed within rainbow nation discourse. The analysis makes prominent reference to the notion of 'liminality' in order to describe the manner in which TMAS constructs significance within the tension that it establishes between oppositional, and often contradictory, positions. Furthermore, it attempts to establish a link between this notion of liminality and notions of theatrical syncretism that are prominent in contemporary South African theatre scholarship, and emphasise processes of signification that are constantly shifting and unstable.
- Full Text:
- Date Issued: 2008
- Authors: Scholtz, Brink
- Date: 2008
- Subjects: Performing arts , Drama -- Study and teaching , Recreational activities
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/57527 , vital:26963
- Description: This research investigates contemporary South African performance within the context of prominent social and cultural change following the political transition from an apartheid state to democracy. Specifically, it looks at the relationship between a popular comic variety show The Most Amazing Show (TMAS), and aspects of contemporary South African society and culture, particularly relating to prominent efforts to affect post-election transformation of South African society and culture through the construction of a South African 'rainbow nation'. By analysing TMAS in terms of broader historical, performative and discursive contexts, it engages a relational reading of the performance. The study argues that TMAS both challenges and participates in the manner in which rainbow nation discourse constructs South African society and culture. Firstly, it considers the performance's construction of hybrid South African identities, including white Afrikaans, white English and white masculine identities. It argues that these reconstructions undermine the tendency within rainbow nation discourse to construct cultural hybridity in terms of stereotypically distinct identities. Secondly, it considers TMAS' construction of collective experience and social integration, which subverts the often glamorised and superficial representations of social healing and integration that are constructed within rainbow nation discourse. The analysis makes prominent reference to the notion of 'liminality' in order to describe the manner in which TMAS constructs significance within the tension that it establishes between oppositional, and often contradictory, positions. Furthermore, it attempts to establish a link between this notion of liminality and notions of theatrical syncretism that are prominent in contemporary South African theatre scholarship, and emphasise processes of signification that are constantly shifting and unstable.
- Full Text:
- Date Issued: 2008
The role of experience in the development of bar managers' social competencies
- Authors: Dhaya, Jateen
- Date: 2008
- Subjects: Hospitality Industry -- Management , Bars (Drinking establishments) -- Management , Social skills , Executive ability , Interpersonal communication , Experience
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1177 , http://hdl.handle.net/10962/d1002794 , Hospitality Industry -- Management , Bars (Drinking establishments) -- Management , Social skills , Executive ability , Interpersonal communication , Experience
- Description: This research study analysed the role that experience played in the development of bar managers’ social competencies. Given the social nature of the bar environment, social competencies were perceived to be essential managerial competencies that enable bar managers to manage employees and consumers to ensure that employee and consumer satisfaction is maintained. The literature reviewed discussed the importance of managerial competencies and the composition of social competencies. Experience was conceptualized to develop an understanding of the informal learning method through which competency development occurs. Data was captured through face-to-face interviews, which were based on the Critical Incident Technique (CIT). The data was analysed using the open coding procedures of grounded theory. This research study proposed a process to explain how experience contributed to the development of social competencies. The proposed process, which is called the Social Competency Cache Development Process (SCCD Process), ultimately indicated that experience contributed to bar managers’ social competencies through a reflection process, the residues of experience, and through the familiarity of situations and results. This research study found that experience contributed to the development of bar managers’ social competencies within a process that established an awareness of unfamiliar social competencies or reinforced the effects of familiar effective social competencies. Experience was also found to promote the transition between novel situations and familiar situations, which in turn enabled bar managers to effectively assess social situations and select effective responses to social situations. Consequently, experience improved the probability of bar managers implementing effective social competencies to ensure employee and consumer satisfaction. In essence, experience shaped bar managers’ accumulation of social competencies by promoting the addition of new social competencies or the reinforcement of existing social competencies.
- Full Text:
- Date Issued: 2008
- Authors: Dhaya, Jateen
- Date: 2008
- Subjects: Hospitality Industry -- Management , Bars (Drinking establishments) -- Management , Social skills , Executive ability , Interpersonal communication , Experience
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1177 , http://hdl.handle.net/10962/d1002794 , Hospitality Industry -- Management , Bars (Drinking establishments) -- Management , Social skills , Executive ability , Interpersonal communication , Experience
- Description: This research study analysed the role that experience played in the development of bar managers’ social competencies. Given the social nature of the bar environment, social competencies were perceived to be essential managerial competencies that enable bar managers to manage employees and consumers to ensure that employee and consumer satisfaction is maintained. The literature reviewed discussed the importance of managerial competencies and the composition of social competencies. Experience was conceptualized to develop an understanding of the informal learning method through which competency development occurs. Data was captured through face-to-face interviews, which were based on the Critical Incident Technique (CIT). The data was analysed using the open coding procedures of grounded theory. This research study proposed a process to explain how experience contributed to the development of social competencies. The proposed process, which is called the Social Competency Cache Development Process (SCCD Process), ultimately indicated that experience contributed to bar managers’ social competencies through a reflection process, the residues of experience, and through the familiarity of situations and results. This research study found that experience contributed to the development of bar managers’ social competencies within a process that established an awareness of unfamiliar social competencies or reinforced the effects of familiar effective social competencies. Experience was also found to promote the transition between novel situations and familiar situations, which in turn enabled bar managers to effectively assess social situations and select effective responses to social situations. Consequently, experience improved the probability of bar managers implementing effective social competencies to ensure employee and consumer satisfaction. In essence, experience shaped bar managers’ accumulation of social competencies by promoting the addition of new social competencies or the reinforcement of existing social competencies.
- Full Text:
- Date Issued: 2008
Conceptualisations of 'the community' and 'community knowledge' among community radio volunteers in Katutura, Namibia
- Authors: Ellis, Hugh
- Date: 2008
- Subjects: Katutura Community Radio Community radio -- Namibia Radio broadcasting -- Namibia Radio stations -- Namibia Radio journalism -- Namibia Volunteers -- Namibia Radio in community development -- Namibia Mass media -- Social aspects -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3428 , http://hdl.handle.net/10962/d1002882
- Description: Community radio typically relies on volunteers to produce and present stations’ programming. Volunteers are generally drawn from stations’ target communities and are seen as “representatives” of those communities. It is with such volunteers and their role as representatives of stations’ target communities that this study is concerned. It poses the question: “what are the central concepts that typically inform volunteers’ knowledge of their target community, and how do these concepts impact on their perception of how they have gained this knowledge, and how they justify their role as representatives of this community?” The dissertation teases out the implications of these conceptualisations for a volunteer team’s ability to contribute to the establishment of a media environment that operates as a Habermasian ‘critical public sphere’. It argues that this can only be achieved if volunteers have detailed and in-depth knowledge of their target community. In order to acquire this knowledge, volunteers should make use of systematic ways of learning about the community, rather than relying solely on knowledge obtained by living there. In a case study of Katutura Community Radio (KCR), one of the bestknown community radio stations in Namibia, the study identifies key differences in the way in which different groups of volunteers conceptualise “the community”. The study focuses, in particular, on such difference as it applies to those who are volunteers in their personal capacity and those who represent non-governmental and community-based organisations at the station. It is argued that two strategies would lead to significant improvement in such a station’s ability to serve as a public sphere. Firstly, the station would benefit from an approach in which different sections of the volunteer team share knowledge of the target community with each other. Secondly, volunteers should undertake further systematic research into their target community. It is also argued that in order to facilitate such processes, radio stations such as KCR should recognise the inevitability of differences between different versions of “community knowledge”.
- Full Text:
- Date Issued: 2008
- Authors: Ellis, Hugh
- Date: 2008
- Subjects: Katutura Community Radio Community radio -- Namibia Radio broadcasting -- Namibia Radio stations -- Namibia Radio journalism -- Namibia Volunteers -- Namibia Radio in community development -- Namibia Mass media -- Social aspects -- Namibia
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3428 , http://hdl.handle.net/10962/d1002882
- Description: Community radio typically relies on volunteers to produce and present stations’ programming. Volunteers are generally drawn from stations’ target communities and are seen as “representatives” of those communities. It is with such volunteers and their role as representatives of stations’ target communities that this study is concerned. It poses the question: “what are the central concepts that typically inform volunteers’ knowledge of their target community, and how do these concepts impact on their perception of how they have gained this knowledge, and how they justify their role as representatives of this community?” The dissertation teases out the implications of these conceptualisations for a volunteer team’s ability to contribute to the establishment of a media environment that operates as a Habermasian ‘critical public sphere’. It argues that this can only be achieved if volunteers have detailed and in-depth knowledge of their target community. In order to acquire this knowledge, volunteers should make use of systematic ways of learning about the community, rather than relying solely on knowledge obtained by living there. In a case study of Katutura Community Radio (KCR), one of the bestknown community radio stations in Namibia, the study identifies key differences in the way in which different groups of volunteers conceptualise “the community”. The study focuses, in particular, on such difference as it applies to those who are volunteers in their personal capacity and those who represent non-governmental and community-based organisations at the station. It is argued that two strategies would lead to significant improvement in such a station’s ability to serve as a public sphere. Firstly, the station would benefit from an approach in which different sections of the volunteer team share knowledge of the target community with each other. Secondly, volunteers should undertake further systematic research into their target community. It is also argued that in order to facilitate such processes, radio stations such as KCR should recognise the inevitability of differences between different versions of “community knowledge”.
- Full Text:
- Date Issued: 2008
Thermal, spectroscopic and x-ray diffraction studies of copper(II) 1,2,4,5-Benzenetetracarboxylates and copper(II) oxalate a study of metal-organic frameworks
- Authors: Lamprecht, Emmanuel
- Date: 2008
- Subjects: Organometallic compounds Copper Oxalates -- Thermal properties Organic compounds -- Synthesis Spectrum analysis X-rays -- Diffraction
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4389 , http://hdl.handle.net/10962/d1005054
- Description: Novel and known metal organic frameworks with copper(II), sodium and 1,2,4,5-benzenetetracarboxylate were prepared by ambient precipitation, solvothermal and gel-synthesis methods, and characterized by single-crystal X-ray diffraction, X-ray powder diffraction, infrared spectroscopy, differential scanning calorimetry, and thermogravimetry with FTIR evolved-gas analysis. Some of these complexes were investigated for guest inclusion properties with water (the original guest species), methanol, ethanol and pyridine. The gel-synthesis products were the most interesting. The novel threedimensional metal-organic framework complex Cu₂ Na(OH)L·7H₂O (where L=1,2,4,5-benzenetetracarboxylate) -formed by gel-synthesis- is a covalent three-dimensional metal organic framework polymer with open channels containing both guest water molecules and water molecules coordinated to sodium. The structure collapsed on dehydration, but was essentially restored to the original structure on rehydration in moist air. On exposure of the dehydrated material to methanol and ethanol vapour, significant uptake of these solvents was observed, and the resolvated structures closely resembled that of the parent material. On heating in dry nitrogen, small amounts of methanol and ethanol remained until about 280 °C, when loss of the remaining guest triggered decomposition of the framework. The related complex, Cu₂¼(OH)½ L·7½H₂O (or possibly Cu₂⅓ (OH)⅔L·8H₂O) -formed by gel-synthesis- had a different physical appearance to Cu₂Na(OH)L·7H₂O above, but had nearly identical X-ray diffraction pattern, mid-infrared spectrum and thermal behaviour. The novel complex Cu₄Na₄L₃·14H₂O -formed by gel-synthesis- is a covalent three-dimensional metal-organic framework with small channels containing both guest water molecules and water coordinated to sodium and copper. Upon dehydration the structure collapsed, but on rehydration in moist air the original structure was partly restored. The dehydrated material did not absorb methanol. Known two-dimensional polymeric complexes [Cu₂L·6H₂O]·4H₂O and [Cu₂L·4H₂O]·2H₂O were also obtained by gel-synthesis, and were characterized and investigated for guest inclusion properties. The structures of these complexes collapsed on dehydration, and were only partly restored on rehydration in saturated water vapour. The dehydrated materials did not absorb methanol. The two-dimensional polymeric mixed-ligand complex Cu₂(pyridine)₄·6H₂O -formed very slowly by gel-synthesis- was characterized by TG-FTIR, and was shown to undergo a complicated decomposition involving the loss of water and pyridine, carbon dioxide and carbon monoxide in various stages. Solvothermal synthesis did not yield materials suitable for single-crystal X-ray diffraction studies or inclusion studies, producing only an anhydrous or hemihydrate complex with the formula Cu₂L·0.65H2O. Ambient precipitation syntheses did not yield materials suitable for singlecrystal diffraction studies, forming products approximately equivalent to the complexes [Cu₂L·6H₂O]·4H₂O and Cu₂¼(OH)½L·7 ½H₂O above. During the course of the above study it was discovered that, on changing the DSC purge from nitrogen to argon, the normally exothermic carboxylate decompositions appeared to become endothermic. The effects of the supposedly inert atmospheres of argon and nitrogen on the decomposition-mechanism of copper(II) oxalate -a well-studied copper carboxylate- were therefore studied by DSC, TG, TG-FTIR and XRPD. DSC experiments were performed in nitrogen and argon at different flow-rates, in various mixtures of nitrogen and argon, and at various heating rates. Regardless of the proportions of nitrogen and argon, the DSC residues consisted mainly of copper metal, a small amount of copper(I) oxide (cuprite) and, in some circumstances, traces of copper(II) oxide (tenorite). Also, regardless of whether TG-FTIR experiments were performed under argon or nitrogen, the gaseous decomposition products consisted mainly of carbon dioxide, with traces of carbon monoxide being detected over part of the decomposition period. Various explanations for the thermal behaviour are discussed, and it is possible that small amounts of O2 or monatomic oxygen were given off during the decomposition under argon. The design and implementation of a low-cost prototype X-ray proportional counter detector system, consisting of a hybrid analog-digital computer built using commonly available electronic components, is presented. This system was designed to replace ageing discrete-transistor designs still in use in earlier X-ray diffractometers. The prototype performs the functions of pulse-shaping, pulseheight discrimination, counting and scaling, and provides both digital and scaled analog outputs.
- Full Text:
- Date Issued: 2008
- Authors: Lamprecht, Emmanuel
- Date: 2008
- Subjects: Organometallic compounds Copper Oxalates -- Thermal properties Organic compounds -- Synthesis Spectrum analysis X-rays -- Diffraction
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4389 , http://hdl.handle.net/10962/d1005054
- Description: Novel and known metal organic frameworks with copper(II), sodium and 1,2,4,5-benzenetetracarboxylate were prepared by ambient precipitation, solvothermal and gel-synthesis methods, and characterized by single-crystal X-ray diffraction, X-ray powder diffraction, infrared spectroscopy, differential scanning calorimetry, and thermogravimetry with FTIR evolved-gas analysis. Some of these complexes were investigated for guest inclusion properties with water (the original guest species), methanol, ethanol and pyridine. The gel-synthesis products were the most interesting. The novel threedimensional metal-organic framework complex Cu₂ Na(OH)L·7H₂O (where L=1,2,4,5-benzenetetracarboxylate) -formed by gel-synthesis- is a covalent three-dimensional metal organic framework polymer with open channels containing both guest water molecules and water molecules coordinated to sodium. The structure collapsed on dehydration, but was essentially restored to the original structure on rehydration in moist air. On exposure of the dehydrated material to methanol and ethanol vapour, significant uptake of these solvents was observed, and the resolvated structures closely resembled that of the parent material. On heating in dry nitrogen, small amounts of methanol and ethanol remained until about 280 °C, when loss of the remaining guest triggered decomposition of the framework. The related complex, Cu₂¼(OH)½ L·7½H₂O (or possibly Cu₂⅓ (OH)⅔L·8H₂O) -formed by gel-synthesis- had a different physical appearance to Cu₂Na(OH)L·7H₂O above, but had nearly identical X-ray diffraction pattern, mid-infrared spectrum and thermal behaviour. The novel complex Cu₄Na₄L₃·14H₂O -formed by gel-synthesis- is a covalent three-dimensional metal-organic framework with small channels containing both guest water molecules and water coordinated to sodium and copper. Upon dehydration the structure collapsed, but on rehydration in moist air the original structure was partly restored. The dehydrated material did not absorb methanol. Known two-dimensional polymeric complexes [Cu₂L·6H₂O]·4H₂O and [Cu₂L·4H₂O]·2H₂O were also obtained by gel-synthesis, and were characterized and investigated for guest inclusion properties. The structures of these complexes collapsed on dehydration, and were only partly restored on rehydration in saturated water vapour. The dehydrated materials did not absorb methanol. The two-dimensional polymeric mixed-ligand complex Cu₂(pyridine)₄·6H₂O -formed very slowly by gel-synthesis- was characterized by TG-FTIR, and was shown to undergo a complicated decomposition involving the loss of water and pyridine, carbon dioxide and carbon monoxide in various stages. Solvothermal synthesis did not yield materials suitable for single-crystal X-ray diffraction studies or inclusion studies, producing only an anhydrous or hemihydrate complex with the formula Cu₂L·0.65H2O. Ambient precipitation syntheses did not yield materials suitable for singlecrystal diffraction studies, forming products approximately equivalent to the complexes [Cu₂L·6H₂O]·4H₂O and Cu₂¼(OH)½L·7 ½H₂O above. During the course of the above study it was discovered that, on changing the DSC purge from nitrogen to argon, the normally exothermic carboxylate decompositions appeared to become endothermic. The effects of the supposedly inert atmospheres of argon and nitrogen on the decomposition-mechanism of copper(II) oxalate -a well-studied copper carboxylate- were therefore studied by DSC, TG, TG-FTIR and XRPD. DSC experiments were performed in nitrogen and argon at different flow-rates, in various mixtures of nitrogen and argon, and at various heating rates. Regardless of the proportions of nitrogen and argon, the DSC residues consisted mainly of copper metal, a small amount of copper(I) oxide (cuprite) and, in some circumstances, traces of copper(II) oxide (tenorite). Also, regardless of whether TG-FTIR experiments were performed under argon or nitrogen, the gaseous decomposition products consisted mainly of carbon dioxide, with traces of carbon monoxide being detected over part of the decomposition period. Various explanations for the thermal behaviour are discussed, and it is possible that small amounts of O2 or monatomic oxygen were given off during the decomposition under argon. The design and implementation of a low-cost prototype X-ray proportional counter detector system, consisting of a hybrid analog-digital computer built using commonly available electronic components, is presented. This system was designed to replace ageing discrete-transistor designs still in use in earlier X-ray diffractometers. The prototype performs the functions of pulse-shaping, pulseheight discrimination, counting and scaling, and provides both digital and scaled analog outputs.
- Full Text:
- Date Issued: 2008
The effect of restricted environments on selected postural, physiological and perceptual responses
- Authors: Wolfe, Amy
- Date: 2008
- Subjects: Human engineering , Posture , Human mechanics , Work environment , Human beings -- Effect of environment on , Musculoskeletal system -- Wounds and injuries , Industrial safety , Work -- Physiological aspects , Stress (Physiology)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5115 , http://hdl.handle.net/10962/d1005193 , Human engineering , Posture , Human mechanics , Work environment , Human beings -- Effect of environment on , Musculoskeletal system -- Wounds and injuries , Industrial safety , Work -- Physiological aspects , Stress (Physiology)
- Description: Manual lifting tasks are the predominant means of transporting materials in industry with many of these tasks being performed in confined spaces. Research has tended to focus on the biomechanical implications of working in small spaces with a decided lack of information about the physiological and perceptual responses in these environments. This holistic study therefore investigated the manner in which the human operator responded to conditions where the ceiling height was lowered and reach demands increased. Thirty-two young physically active male subjects (age: 21.55yr; stature: 1810mm) were recruited to complete a 2-way repeated measures experiment during which four lifting protocols where different combinations of ceiling height (‘normal’ or reduced to 1460mm in height) and reach demands (400mm or 800mm) were tested. A crude postural analysis was conducted while physiological responses were detailed and continuously monitored. Perceptual responses were also assessed. The tasks with a ‘normal’ ceiling height (mean compression forces: 2615N; mean shearing forces: 388N) and the greatest reach distance (mean compression forces: 3655N; mean shearing forces: 386N) placed individuals under the highest strain. Mean heart rate (HR) responses were significantly lower (p < 0.05) in the URN condition when compared to the RF condition. Furthermore, HR responses were statistically significantly affected by the height of the ceiling and the reach depth. Statistically significant differences (p< 0.05) in mean tidal volume (VT) occurred in the least (URN) and most (RF) restrictive conditions. Statistically significant differences (p < 0.05) in mean VE were evident between URN and URF, between URN and RF and between RN and RF. Ceiling height and reach demands had a statistically significant effect on all respiratory responses. There was a statistically significant difference in mean oxygen consumption (VO2) between the URN and all other conditions, and between the most restricted task (RF) and all other conditions. Both the effect of ceiling height and reach demands had a statistically statistically significant impact on VO2. Respiratory quotient (RQ) was significantly higher when loads were moved over 800mm compared to 400mm yet ceiling height did not have a statistically significant effect on RQ. Mean energy expenditure was significantly higher in the RF condition compared to the two least restrictive conditions (URN and RN). Statistically significant differences in EE were also evident between URN and RN, and between URN and URF. EE was significantly affected by reductions in ceiling height and increases in reach demands. Perceptually, the RF task (mean ‘Central’ RPE of 11) was perceived to place significantly greater cardiorespiratory demands on the operator compared to the URN (CRPE: 10) and RN (CRPE: 10) conditions. Statistically significant differences in perceived musculoskeletal strain only occurred between URN and RF. The effect of reach was perceived to have a statistically significant effect on both cardiovascular and musculoskeletal demands whereas ceiling height only had a statistically significant effect on musculoskeletal demands. The greatest discomfort was experienced in the lower back with the most intense discomfort occurring in the RN condition.
- Full Text:
- Date Issued: 2008
- Authors: Wolfe, Amy
- Date: 2008
- Subjects: Human engineering , Posture , Human mechanics , Work environment , Human beings -- Effect of environment on , Musculoskeletal system -- Wounds and injuries , Industrial safety , Work -- Physiological aspects , Stress (Physiology)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5115 , http://hdl.handle.net/10962/d1005193 , Human engineering , Posture , Human mechanics , Work environment , Human beings -- Effect of environment on , Musculoskeletal system -- Wounds and injuries , Industrial safety , Work -- Physiological aspects , Stress (Physiology)
- Description: Manual lifting tasks are the predominant means of transporting materials in industry with many of these tasks being performed in confined spaces. Research has tended to focus on the biomechanical implications of working in small spaces with a decided lack of information about the physiological and perceptual responses in these environments. This holistic study therefore investigated the manner in which the human operator responded to conditions where the ceiling height was lowered and reach demands increased. Thirty-two young physically active male subjects (age: 21.55yr; stature: 1810mm) were recruited to complete a 2-way repeated measures experiment during which four lifting protocols where different combinations of ceiling height (‘normal’ or reduced to 1460mm in height) and reach demands (400mm or 800mm) were tested. A crude postural analysis was conducted while physiological responses were detailed and continuously monitored. Perceptual responses were also assessed. The tasks with a ‘normal’ ceiling height (mean compression forces: 2615N; mean shearing forces: 388N) and the greatest reach distance (mean compression forces: 3655N; mean shearing forces: 386N) placed individuals under the highest strain. Mean heart rate (HR) responses were significantly lower (p < 0.05) in the URN condition when compared to the RF condition. Furthermore, HR responses were statistically significantly affected by the height of the ceiling and the reach depth. Statistically significant differences (p< 0.05) in mean tidal volume (VT) occurred in the least (URN) and most (RF) restrictive conditions. Statistically significant differences (p < 0.05) in mean VE were evident between URN and URF, between URN and RF and between RN and RF. Ceiling height and reach demands had a statistically significant effect on all respiratory responses. There was a statistically significant difference in mean oxygen consumption (VO2) between the URN and all other conditions, and between the most restricted task (RF) and all other conditions. Both the effect of ceiling height and reach demands had a statistically statistically significant impact on VO2. Respiratory quotient (RQ) was significantly higher when loads were moved over 800mm compared to 400mm yet ceiling height did not have a statistically significant effect on RQ. Mean energy expenditure was significantly higher in the RF condition compared to the two least restrictive conditions (URN and RN). Statistically significant differences in EE were also evident between URN and RN, and between URN and URF. EE was significantly affected by reductions in ceiling height and increases in reach demands. Perceptually, the RF task (mean ‘Central’ RPE of 11) was perceived to place significantly greater cardiorespiratory demands on the operator compared to the URN (CRPE: 10) and RN (CRPE: 10) conditions. Statistically significant differences in perceived musculoskeletal strain only occurred between URN and RF. The effect of reach was perceived to have a statistically significant effect on both cardiovascular and musculoskeletal demands whereas ceiling height only had a statistically significant effect on musculoskeletal demands. The greatest discomfort was experienced in the lower back with the most intense discomfort occurring in the RN condition.
- Full Text:
- Date Issued: 2008
Investigating the role of portfolios in developing reflective practice : a case study
- Authors: Mbango, Karolina Naango
- Date: 2008
- Subjects: Portfolios in education -- Namibia -- Case studies Student teachers -- Namibia -- Case studies Teachers -- Training of -- Namibia -- Case studies Teacher educators -- Namibia -- Case studies Reflective teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1595 , http://hdl.handle.net/10962/d1003477
- Description: The purpose of this study was to investigate the purpose and role portfolios are playing in developing reflective practice in student teachers and to assess the degree to which this role is being achieved in practice. This study was a interpretive small scale case study. The target groups were 3 student teachers in their final year of study, 3 teacher educators and the vice-rector of the college. Data were obtained through interviews and document analysis. The findings indicated that the students had no meaningful orientation to both the role of portfolio development and reflective skills. The sources of this were the lack of common understanding among teacher educators, lack of support for both teacher educators and student teachers and lack of time, lack of guidelines for construction and clear assessment rubric. The results of this study indicated that the teacher educators were in need of vigorous professional development and considerable implementation strategies are needed to develop the desired reflective skills.
- Full Text:
- Date Issued: 2008
- Authors: Mbango, Karolina Naango
- Date: 2008
- Subjects: Portfolios in education -- Namibia -- Case studies Student teachers -- Namibia -- Case studies Teachers -- Training of -- Namibia -- Case studies Teacher educators -- Namibia -- Case studies Reflective teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1595 , http://hdl.handle.net/10962/d1003477
- Description: The purpose of this study was to investigate the purpose and role portfolios are playing in developing reflective practice in student teachers and to assess the degree to which this role is being achieved in practice. This study was a interpretive small scale case study. The target groups were 3 student teachers in their final year of study, 3 teacher educators and the vice-rector of the college. Data were obtained through interviews and document analysis. The findings indicated that the students had no meaningful orientation to both the role of portfolio development and reflective skills. The sources of this were the lack of common understanding among teacher educators, lack of support for both teacher educators and student teachers and lack of time, lack of guidelines for construction and clear assessment rubric. The results of this study indicated that the teacher educators were in need of vigorous professional development and considerable implementation strategies are needed to develop the desired reflective skills.
- Full Text:
- Date Issued: 2008
Towards understanding the mechanism of dimerisation of Saccharomyces cerevisiae eukaryotic translation initiation factor 5A
- Authors: Gentz, Petra Monika
- Date: 2008
- Subjects: Cytology Molecular biology Biochemistry Proteins -- Analysis Proteomics Polypeptides Amino acids -- Synthesis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3992 , http://hdl.handle.net/10962/d1004052
- Description: Eukaryotic translation initiation factor 5A (eIF5A) is the only known protein to contain hypusine, formed by post-translational modification of a highly conserved lysine residue. Hypusination is essential for eIF5A function, being required for binding of a specific subset of mRNAs necessary for progression of eukaryotic cells through the G1-S checkpoint. Little structural information is available for eIF5A other than that derived from archaeal homologues. The aim of this study was to conduct structure-function studies on Saccharomyces cerevisiae (yeast) eIF5A, encoded by TIF51A. Homology models of eIF5A were generated from the Methanococcus jannaschii archaeal homologue (aIF5A) and two Leishmania eIF5As. The models, along with secondary structure predictions identified an a-helix on the C-terminal domain, unique to eukaryote eIF5A. The Neurospora crassa structural analogue, HEX-1, which dimerises in three configurations, was used to generate similar dimeric model configurations of eIF5A. A biochemical and functional analysis was used to validate the homology models of eIF5A.Since the crystal structures of aIF5A and eIF5A were solved from unhypusinated protein produced in Escherichia coli, 6 x His-tagged eIF5A (His-eIF5A) was used for biochemical analysis. This analysis revealed that eIF5A existed as a dimer in solution, dependent on the presence of the highly conserved Cys 39 residue. A yeast TIF51A/TIF51B null yeast strain, with a chromosomal copy of TIF51A under control of PGAL1, was used to confirm that HiseIF5A and selected eIF5A mutants were functional in vivo. Biochemical analysis showed that hypusinated His-eIF5A also exists as a dimer, but neither the dimerisation, nor the function of eIF5A are dependent on the presence of Cys 39. Rather they depend on the presence of hypusine (Hpu) 51 and the presence of RNA leading to the conclusion that RNA and hypusine are required for dimerisation and hence function, of native eIF5A in vivo. In contrast, a Lys 51 to Arg 51 substitution or RNase treatment of His-eIF5A produced in E. coli did not destabilize the dimeric form, suggesting different folding/dimerisation mechanisms in E. coli and yeast cells. The information obtained from the initial homology models, together with the results of the biochemical analysis was used to propose a mechanism for dimerisation of yeast eIF5A involving both hypusine and RNA.
- Full Text:
- Date Issued: 2008
- Authors: Gentz, Petra Monika
- Date: 2008
- Subjects: Cytology Molecular biology Biochemistry Proteins -- Analysis Proteomics Polypeptides Amino acids -- Synthesis
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3992 , http://hdl.handle.net/10962/d1004052
- Description: Eukaryotic translation initiation factor 5A (eIF5A) is the only known protein to contain hypusine, formed by post-translational modification of a highly conserved lysine residue. Hypusination is essential for eIF5A function, being required for binding of a specific subset of mRNAs necessary for progression of eukaryotic cells through the G1-S checkpoint. Little structural information is available for eIF5A other than that derived from archaeal homologues. The aim of this study was to conduct structure-function studies on Saccharomyces cerevisiae (yeast) eIF5A, encoded by TIF51A. Homology models of eIF5A were generated from the Methanococcus jannaschii archaeal homologue (aIF5A) and two Leishmania eIF5As. The models, along with secondary structure predictions identified an a-helix on the C-terminal domain, unique to eukaryote eIF5A. The Neurospora crassa structural analogue, HEX-1, which dimerises in three configurations, was used to generate similar dimeric model configurations of eIF5A. A biochemical and functional analysis was used to validate the homology models of eIF5A.Since the crystal structures of aIF5A and eIF5A were solved from unhypusinated protein produced in Escherichia coli, 6 x His-tagged eIF5A (His-eIF5A) was used for biochemical analysis. This analysis revealed that eIF5A existed as a dimer in solution, dependent on the presence of the highly conserved Cys 39 residue. A yeast TIF51A/TIF51B null yeast strain, with a chromosomal copy of TIF51A under control of PGAL1, was used to confirm that HiseIF5A and selected eIF5A mutants were functional in vivo. Biochemical analysis showed that hypusinated His-eIF5A also exists as a dimer, but neither the dimerisation, nor the function of eIF5A are dependent on the presence of Cys 39. Rather they depend on the presence of hypusine (Hpu) 51 and the presence of RNA leading to the conclusion that RNA and hypusine are required for dimerisation and hence function, of native eIF5A in vivo. In contrast, a Lys 51 to Arg 51 substitution or RNase treatment of His-eIF5A produced in E. coli did not destabilize the dimeric form, suggesting different folding/dimerisation mechanisms in E. coli and yeast cells. The information obtained from the initial homology models, together with the results of the biochemical analysis was used to propose a mechanism for dimerisation of yeast eIF5A involving both hypusine and RNA.
- Full Text:
- Date Issued: 2008
Effects of temperature on the development, behaviour and geography of blowflies in a forensic context
- Authors: Richards, Cameron Spencer
- Date: 2008
- Subjects: Blowflies Blowflies -- South Africa Diptera -- South Africa Insects -- Development Insects -- Behavior Forensic entomology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5683 , http://hdl.handle.net/10962/d1005369
- Description: The development of immature insects is commonly employed in forensic investigations to estimate time of death, or postmortem interval (PMI), of a corpse on which they are feeding. The bulk of this thesis focuses on factors influencing the accuracy of developmental data, and exploring how and why developmental data differ between studies involving the same species, and between different species. Because carrion feeding insects are ectotherms, temperature may be expected to significantly influence their behaviour, development and distribution, and the remainder of the thesis therefore focuses on the thermal biology and geographical distribution of seven forensically important blowflies. The species include Chrysomya albiceps, C. putoria, C. chloropyga, C. megacephala, C. marginalis, C. inclinata and Calliphora croceipalpis. A robust experimental design for estimating developmental models is outlined and tested. It is recommended that forensic entomologists should involve at least six constant temperatures, starting at about 7°C above the relevant developmental zero (D0) and going to about 10°C above the upper critical temperature, and a temporal sampling interval with a relative precision of about 10%. Using this design, focused experiments consistently provided the most reliable developmental data, while data pooled from different studies yielded inconsistent results. Similarly, developmental data from closely related species differed significantly, and surprisingly so did developmental data from different populations of the same species. Possible explanations for the latter lay in the different methods of data collection but only temporal sampling resolution had a direct influence on the accuracy of developmental data. Consequently, disparities in such data were primarily ascribed to genetic differences and phenotypic plasticity. Comparisons between numerous thermal thresholds of larvae, pupae and adults support this conclusion and suggest a phylogenetic component to the thermal biology of blowflies. Further comparisons were made between these temperature thresholds and the distributions of blowfly species present on two rhinoceros carcasses. These comparisons suggest that blowfly larvae with high upper lethal temperature thresholds dominate in interspecific competition in favorable thermal environments by raising maggot mass temperature above the thresholds of other carrion-feeding blowflies, through maggot-generated heat. Bioclimatic modeling using maximum entropy analysis provided a successful means of predicting whether a species is likely to occur in an area, and whether it would therefore be expected in a local carcass community. It also showed that temperature was less important than moisture in shaping the geographical distribution of African carrion blowflies. Based on these results, several recommendations are made for the practice of forensic entomology.
- Full Text:
- Date Issued: 2008
- Authors: Richards, Cameron Spencer
- Date: 2008
- Subjects: Blowflies Blowflies -- South Africa Diptera -- South Africa Insects -- Development Insects -- Behavior Forensic entomology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5683 , http://hdl.handle.net/10962/d1005369
- Description: The development of immature insects is commonly employed in forensic investigations to estimate time of death, or postmortem interval (PMI), of a corpse on which they are feeding. The bulk of this thesis focuses on factors influencing the accuracy of developmental data, and exploring how and why developmental data differ between studies involving the same species, and between different species. Because carrion feeding insects are ectotherms, temperature may be expected to significantly influence their behaviour, development and distribution, and the remainder of the thesis therefore focuses on the thermal biology and geographical distribution of seven forensically important blowflies. The species include Chrysomya albiceps, C. putoria, C. chloropyga, C. megacephala, C. marginalis, C. inclinata and Calliphora croceipalpis. A robust experimental design for estimating developmental models is outlined and tested. It is recommended that forensic entomologists should involve at least six constant temperatures, starting at about 7°C above the relevant developmental zero (D0) and going to about 10°C above the upper critical temperature, and a temporal sampling interval with a relative precision of about 10%. Using this design, focused experiments consistently provided the most reliable developmental data, while data pooled from different studies yielded inconsistent results. Similarly, developmental data from closely related species differed significantly, and surprisingly so did developmental data from different populations of the same species. Possible explanations for the latter lay in the different methods of data collection but only temporal sampling resolution had a direct influence on the accuracy of developmental data. Consequently, disparities in such data were primarily ascribed to genetic differences and phenotypic plasticity. Comparisons between numerous thermal thresholds of larvae, pupae and adults support this conclusion and suggest a phylogenetic component to the thermal biology of blowflies. Further comparisons were made between these temperature thresholds and the distributions of blowfly species present on two rhinoceros carcasses. These comparisons suggest that blowfly larvae with high upper lethal temperature thresholds dominate in interspecific competition in favorable thermal environments by raising maggot mass temperature above the thresholds of other carrion-feeding blowflies, through maggot-generated heat. Bioclimatic modeling using maximum entropy analysis provided a successful means of predicting whether a species is likely to occur in an area, and whether it would therefore be expected in a local carcass community. It also showed that temperature was less important than moisture in shaping the geographical distribution of African carrion blowflies. Based on these results, several recommendations are made for the practice of forensic entomology.
- Full Text:
- Date Issued: 2008
A VLBI study of OH masers in a proto-planetary nebula OH 0.9+1.3
- Authors: McAlpine, Kim
- Date: 2008
- Subjects: Very long baseline interferometry , Proto-planetary nebulae , Masers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5499 , http://hdl.handle.net/10962/d1005285 , Very long baseline interferometry , Proto-planetary nebulae , Masers
- Description: This thesis reports the calibration, imaging and analysis of one epoch of VLBA observations of the 1612 MHz OH maser emission from the protoplanetary nebula OH 0.9+1.3. These are the first polarisation VLBI observations of this source and the spatial morphology of the OH emission is resolved on this scale. Proto-planetary nebulae represent the transition phase in the evolution of stars between the asymptotic giant branch (AGB) phase and their emergence as planetary nebulae. A long-standing astronomical question is how the predominantly spherical circumstellar envelopes of AGB stars evolve into the bipolar and axisymmetric structures that are commonly observed in planetary nebula. Proto-planetary nebulae offer a unique opportunity to study this transformation process. The high-resolution VLBI maps produced in this thesis were used to investigate the morphology and kinematics of OH 0.9+1.3 with a view to gaining insight into the development of asymmetries in the circumstellar material. The OH maser emission of OH 0.9+1.3 has a double-peaked profile with one peak blue-shifted and the other red-shifted with respect to the stellar velocity. The total intensity maser maps demonstrate a considerable degree of asymmetry with the blue- and red-shifted emission located in spatially distinct regions of the envelope. The blue-shifted emission is distributed preferentially along an axis at a projected position angle of » 135± ( North through East). The morphology of this source is not consistent with the standard symmetric thin-shell model and an attempt to fit the traditional OH/IR kinematic model of a simple expanding shell to the maser components was found to be unsatisfactory. No definitive evidence of a bipolar outflow was observed either. The high degree of asymmetry observed in the source is consistent with its status as a proto-planetary nebula. The source was imaged in all four Stokes parameters and the fractional linear and circular polarisations of the maser components were derived from the Stokes parameter maps. In all except one of the components the total fractional polarisation was found to be low ( < 15%). The mean fractional linear and circular polarisation were calculated to be 5.54% and 7.11% respectively. The absence of an identifiable Zeeman pair in the Stokes V map prohibited the estimation of the magnetic field in the circumstellar envelope of this source.
- Full Text:
- Date Issued: 2008
- Authors: McAlpine, Kim
- Date: 2008
- Subjects: Very long baseline interferometry , Proto-planetary nebulae , Masers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5499 , http://hdl.handle.net/10962/d1005285 , Very long baseline interferometry , Proto-planetary nebulae , Masers
- Description: This thesis reports the calibration, imaging and analysis of one epoch of VLBA observations of the 1612 MHz OH maser emission from the protoplanetary nebula OH 0.9+1.3. These are the first polarisation VLBI observations of this source and the spatial morphology of the OH emission is resolved on this scale. Proto-planetary nebulae represent the transition phase in the evolution of stars between the asymptotic giant branch (AGB) phase and their emergence as planetary nebulae. A long-standing astronomical question is how the predominantly spherical circumstellar envelopes of AGB stars evolve into the bipolar and axisymmetric structures that are commonly observed in planetary nebula. Proto-planetary nebulae offer a unique opportunity to study this transformation process. The high-resolution VLBI maps produced in this thesis were used to investigate the morphology and kinematics of OH 0.9+1.3 with a view to gaining insight into the development of asymmetries in the circumstellar material. The OH maser emission of OH 0.9+1.3 has a double-peaked profile with one peak blue-shifted and the other red-shifted with respect to the stellar velocity. The total intensity maser maps demonstrate a considerable degree of asymmetry with the blue- and red-shifted emission located in spatially distinct regions of the envelope. The blue-shifted emission is distributed preferentially along an axis at a projected position angle of » 135± ( North through East). The morphology of this source is not consistent with the standard symmetric thin-shell model and an attempt to fit the traditional OH/IR kinematic model of a simple expanding shell to the maser components was found to be unsatisfactory. No definitive evidence of a bipolar outflow was observed either. The high degree of asymmetry observed in the source is consistent with its status as a proto-planetary nebula. The source was imaged in all four Stokes parameters and the fractional linear and circular polarisations of the maser components were derived from the Stokes parameter maps. In all except one of the components the total fractional polarisation was found to be low ( < 15%). The mean fractional linear and circular polarisation were calculated to be 5.54% and 7.11% respectively. The absence of an identifiable Zeeman pair in the Stokes V map prohibited the estimation of the magnetic field in the circumstellar envelope of this source.
- Full Text:
- Date Issued: 2008
Life in the suburbs after "Grootboom": the role of local government in realising housing rights in the Eastern Cape
- Authors: Kruuse, Helen Julia
- Date: 2008
- Subjects: Right to housing , Human rights -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Housing -- Law and legislation -- South Africa -- Eastern Cape , Housing policy -- South Africa -- Eastern Cape , Low income housing -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3678 , http://hdl.handle.net/10962/d1003193 , Right to housing , Human rights -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Housing -- Law and legislation -- South Africa -- Eastern Cape , Housing policy -- South Africa -- Eastern Cape , Low income housing -- South Africa -- Eastern Cape
- Description: When the Government of National Unity took office in 1994, it inherited a country with severe inequalities in resource distribution and land ownership. In particular, it inherited a housing crisis which was, to a large extent, caused by apartheid legislation and policies. This research focuses on the housing crisis post-1994 by considering the impact and effect of the constitutional right to have access to adequate housing, especially for those living in intolerable conditions. It does so by utilising a social-scientific approach to the law. This approach acknowledges that the housing right must exist alongside other social phenomena and as a part of everyday life in South Africa. Accordingly, the implementation of the housing right by three local municipalities in the Eastern Cape is examined. Following an initial overview of the history of housing and local government in South Africa, the study focuses on the current legislative framework for housing and theinterpretation of the housing right (and other socio-economic rights) in certain court decisions. These decisions are discussed, not only because of the impact they have had on communities living in intolerable situations, but, as importantly, because they have developed standards against which policy and planning should be measured. These standards are used in the study to evaluate housing provision in three municipalities. The evaluation (by means of interviews and assessment of planning documentation) demonstrates that the recognition of the housing right in the Constitution and by the courts does not necessarily translate into effective recognition and implementation by the state. The research shows that the failure to plan proactively, lack of co-operative governance and inadequate controls over financial and human resources thwart the realisation of the housing right by local government. It is recommended that, in order to make the housing right a reality, research into the housing right (and indeed other socio-economic rights) should scrutinise the management of financial and human resources of the state in the context of the policy, planning and implementation environment. Where research is able to show evidence of unspent budgets, insufficient planning and mismanagement of resources, courts would be able to focus on the implementation aspect of the housing right, and ensure that it may yet have a meaningful impact on the lives of millions of some of the most vulnerable people in society.
- Full Text:
- Date Issued: 2008
- Authors: Kruuse, Helen Julia
- Date: 2008
- Subjects: Right to housing , Human rights -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Housing -- Law and legislation -- South Africa -- Eastern Cape , Housing policy -- South Africa -- Eastern Cape , Low income housing -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3678 , http://hdl.handle.net/10962/d1003193 , Right to housing , Human rights -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Housing -- Law and legislation -- South Africa -- Eastern Cape , Housing policy -- South Africa -- Eastern Cape , Low income housing -- South Africa -- Eastern Cape
- Description: When the Government of National Unity took office in 1994, it inherited a country with severe inequalities in resource distribution and land ownership. In particular, it inherited a housing crisis which was, to a large extent, caused by apartheid legislation and policies. This research focuses on the housing crisis post-1994 by considering the impact and effect of the constitutional right to have access to adequate housing, especially for those living in intolerable conditions. It does so by utilising a social-scientific approach to the law. This approach acknowledges that the housing right must exist alongside other social phenomena and as a part of everyday life in South Africa. Accordingly, the implementation of the housing right by three local municipalities in the Eastern Cape is examined. Following an initial overview of the history of housing and local government in South Africa, the study focuses on the current legislative framework for housing and theinterpretation of the housing right (and other socio-economic rights) in certain court decisions. These decisions are discussed, not only because of the impact they have had on communities living in intolerable situations, but, as importantly, because they have developed standards against which policy and planning should be measured. These standards are used in the study to evaluate housing provision in three municipalities. The evaluation (by means of interviews and assessment of planning documentation) demonstrates that the recognition of the housing right in the Constitution and by the courts does not necessarily translate into effective recognition and implementation by the state. The research shows that the failure to plan proactively, lack of co-operative governance and inadequate controls over financial and human resources thwart the realisation of the housing right by local government. It is recommended that, in order to make the housing right a reality, research into the housing right (and indeed other socio-economic rights) should scrutinise the management of financial and human resources of the state in the context of the policy, planning and implementation environment. Where research is able to show evidence of unspent budgets, insufficient planning and mismanagement of resources, courts would be able to focus on the implementation aspect of the housing right, and ensure that it may yet have a meaningful impact on the lives of millions of some of the most vulnerable people in society.
- Full Text:
- Date Issued: 2008
The variability and predictability of the IRI shape parameters over Grahamstown, South Africa
- Authors: Chimidza, Oyapo
- Date: 2008
- Subjects: Ionosphere -- Mathematical models -- South Africa , Atmosphere, Upper -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5496 , http://hdl.handle.net/10962/d1005282 , Ionosphere -- Mathematical models -- South Africa , Atmosphere, Upper -- South Africa
- Description: The International Reference Ionosphere (IRI) shape parameters B0, B1, and D1 provide a representation of the shape of the F2 layer, the thickness of the F2 layer and the shape of the F1 layer of the ionosphere respectively. The aim of this study was to examine the variability of these parameters using Grahamstown, South Africa (33.3±S, 26.5±E) ionosonde data and determine their predictability by the IRI-2001 model. A further aim of this study was to investigate developing an alternative model for predicting these parameters. These parameters can be determined from electron density profiles that are inverted from ionograms recorded with an ionosonde. Data representing the B0, B1 and D1 parameters, with half hourly or hourly intervals, were scaled and deduced from the digital pulse sounder (DPS) ionosonde for the period April 1996 to December 2006. An analysis of the diurnal, seasonal, and solar variations of the behaviour of these parameters was undertaken for the years 2000, 2004 and 2005 using monthly medians. Comparisons between the observational results and that of the IRI model (IRI 2001 version) indicate that the IRI-2001 model does not accurately represent the diurnal and seasonal variation of the parameters. A preliminary model was thus developed using the technique of Neural Networks (NNs). All available data from the Grahamstown ionosonde from 1996 to 2006 were used in the training of the NNs and the prediction of the variation of the shape parameters. Inputs to the model were the day number, the hour of day, the solar activity and the magnetic index. Comparisons between the preliminary NN model and the IRI-2001 model indicated that the preliminary model was more accurate at the prediction of the parameters than the IRI-2001 model. This analysis showed the need to improve the existing IRI model or develop a new model for the South African region. This thesis describes the results from this feasibility study which show the variability and predictability of the IRI shape parameters.
- Full Text:
- Date Issued: 2008
- Authors: Chimidza, Oyapo
- Date: 2008
- Subjects: Ionosphere -- Mathematical models -- South Africa , Atmosphere, Upper -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5496 , http://hdl.handle.net/10962/d1005282 , Ionosphere -- Mathematical models -- South Africa , Atmosphere, Upper -- South Africa
- Description: The International Reference Ionosphere (IRI) shape parameters B0, B1, and D1 provide a representation of the shape of the F2 layer, the thickness of the F2 layer and the shape of the F1 layer of the ionosphere respectively. The aim of this study was to examine the variability of these parameters using Grahamstown, South Africa (33.3±S, 26.5±E) ionosonde data and determine their predictability by the IRI-2001 model. A further aim of this study was to investigate developing an alternative model for predicting these parameters. These parameters can be determined from electron density profiles that are inverted from ionograms recorded with an ionosonde. Data representing the B0, B1 and D1 parameters, with half hourly or hourly intervals, were scaled and deduced from the digital pulse sounder (DPS) ionosonde for the period April 1996 to December 2006. An analysis of the diurnal, seasonal, and solar variations of the behaviour of these parameters was undertaken for the years 2000, 2004 and 2005 using monthly medians. Comparisons between the observational results and that of the IRI model (IRI 2001 version) indicate that the IRI-2001 model does not accurately represent the diurnal and seasonal variation of the parameters. A preliminary model was thus developed using the technique of Neural Networks (NNs). All available data from the Grahamstown ionosonde from 1996 to 2006 were used in the training of the NNs and the prediction of the variation of the shape parameters. Inputs to the model were the day number, the hour of day, the solar activity and the magnetic index. Comparisons between the preliminary NN model and the IRI-2001 model indicated that the preliminary model was more accurate at the prediction of the parameters than the IRI-2001 model. This analysis showed the need to improve the existing IRI model or develop a new model for the South African region. This thesis describes the results from this feasibility study which show the variability and predictability of the IRI shape parameters.
- Full Text:
- Date Issued: 2008
The male novelist and the 'woman question' George Meredith's presentation of his Heroines in The Egoist (1879) and Diana of the Crossways (1885)
- Authors: Bell, Alan Nigel
- Date: 2008
- Subjects: Meredith, George, 1828-1909 -- Criticism and interpretation Meredith, George, 1828-1909. Egoist Meredith, George, 1828-1909. Diana of the Crossways English fiction -- 19th century -- History and criticism English fiction -- Male authors -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2203 , http://hdl.handle.net/10962/d1002245
- Description: Focusing on four early works, then three from his middle period and three from the 1890s, this dissertation explores Meredith’s role as a novelist in the unfolding of a social and literary paradox, namely, that with the death of George Eliot in 1880, the dominant writers of fiction were male, and this remained the case until the advent of Virginia Woolf, while at the same time the woman’s movement for emancipation in all spheres of life—domestic, commercial, professional and political—was gathering in strength and conviction. None of the late nineteenth-century male novelists—James, Hardy, Moore and Gissing, as well as Meredith—was ideologically committed to the feminist cause; in fact the very term ‘feminist’ did not begin to become current in England until the mid-1890s. But they were all interested in one aspect or another of the ‘Woman Question’, even if James was ambivalent about female emancipation, and Gissing, on the whole, was somewhat hostile. Of all these novelists, it was Meredith whose work, especially in its last two decades, most copiously reveals a profound sympathy for women and their struggles to realize their desires and ambitions, both inside and outside the home, in a patriarchal world. The dissertation therefore concentrates on his presentation of his heroines in their relationships with the men who, in one way or another, dominate them, and with whom they must negotiate, within the social and sexual conventions of the time, a modus vivendi—a procedure that will entail, especially in the later work, some transgression of those conventions. Chapter 1 sketches more than two centuries of development in female consciousness of severe social disadvantage, from literary observations in the mid-seventeenth century to the intensifying of political representations in the writings of Mary Wollstonecraft, and the rise of the woman’s movement in the course of the Victorian century. The chapter includes an account of the impact on Meredith of John Stuart Mill’s The Subjection of Women (1869), and an examination of some of his female friendships by way of illuminating the experiential component of his insights into the ‘Woman Question’ as reflected in his fiction and letters. His unhappy first marriage is reserved for consideration in Chapter 2, as background to the discussion of The Ordeal of Richard Feverel (1859). This early novel, Meredith’s first in the realist mode, is widely accepted as being of high quality, and is given extended treatment, together with briefer accounts of three other early works, The Shaving of Shagpat (1855), Evan Harrington (1861), and Rhoda Fleming (1865), and one from Meredith’s middle period, Beauchamp’s Career (1876). Two more novels of this period, The Egoist (1879) and Diana of the Crossways (1885), are generally considered to be among his best works, and their heroines are given chapters to themselves (3 and 4). Chapter 5 provides further contextualization for the changing socio-political circumstances of the 1880s and 1890s, with particular reference to that heightening of feminist consciousness represented by the short-lived ‘New Woman’ phenomenon, to which Diana of the Crossways had been considered by some to be a contribution. Brief discussion of some other ‘New Woman’ novels of the 80s and 90s follows, giving literary context to the heroines of Meredith’s three late candidates in the genre, One of Our Conquerors (1891), Lord Ormont and His Aminta (1894), and The Amazing Marriage (1895). The dissertation concludes with a glance at Meredith’s influence on a few early twentieth-century novelists.
- Full Text:
- Date Issued: 2008
- Authors: Bell, Alan Nigel
- Date: 2008
- Subjects: Meredith, George, 1828-1909 -- Criticism and interpretation Meredith, George, 1828-1909. Egoist Meredith, George, 1828-1909. Diana of the Crossways English fiction -- 19th century -- History and criticism English fiction -- Male authors -- History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2203 , http://hdl.handle.net/10962/d1002245
- Description: Focusing on four early works, then three from his middle period and three from the 1890s, this dissertation explores Meredith’s role as a novelist in the unfolding of a social and literary paradox, namely, that with the death of George Eliot in 1880, the dominant writers of fiction were male, and this remained the case until the advent of Virginia Woolf, while at the same time the woman’s movement for emancipation in all spheres of life—domestic, commercial, professional and political—was gathering in strength and conviction. None of the late nineteenth-century male novelists—James, Hardy, Moore and Gissing, as well as Meredith—was ideologically committed to the feminist cause; in fact the very term ‘feminist’ did not begin to become current in England until the mid-1890s. But they were all interested in one aspect or another of the ‘Woman Question’, even if James was ambivalent about female emancipation, and Gissing, on the whole, was somewhat hostile. Of all these novelists, it was Meredith whose work, especially in its last two decades, most copiously reveals a profound sympathy for women and their struggles to realize their desires and ambitions, both inside and outside the home, in a patriarchal world. The dissertation therefore concentrates on his presentation of his heroines in their relationships with the men who, in one way or another, dominate them, and with whom they must negotiate, within the social and sexual conventions of the time, a modus vivendi—a procedure that will entail, especially in the later work, some transgression of those conventions. Chapter 1 sketches more than two centuries of development in female consciousness of severe social disadvantage, from literary observations in the mid-seventeenth century to the intensifying of political representations in the writings of Mary Wollstonecraft, and the rise of the woman’s movement in the course of the Victorian century. The chapter includes an account of the impact on Meredith of John Stuart Mill’s The Subjection of Women (1869), and an examination of some of his female friendships by way of illuminating the experiential component of his insights into the ‘Woman Question’ as reflected in his fiction and letters. His unhappy first marriage is reserved for consideration in Chapter 2, as background to the discussion of The Ordeal of Richard Feverel (1859). This early novel, Meredith’s first in the realist mode, is widely accepted as being of high quality, and is given extended treatment, together with briefer accounts of three other early works, The Shaving of Shagpat (1855), Evan Harrington (1861), and Rhoda Fleming (1865), and one from Meredith’s middle period, Beauchamp’s Career (1876). Two more novels of this period, The Egoist (1879) and Diana of the Crossways (1885), are generally considered to be among his best works, and their heroines are given chapters to themselves (3 and 4). Chapter 5 provides further contextualization for the changing socio-political circumstances of the 1880s and 1890s, with particular reference to that heightening of feminist consciousness represented by the short-lived ‘New Woman’ phenomenon, to which Diana of the Crossways had been considered by some to be a contribution. Brief discussion of some other ‘New Woman’ novels of the 80s and 90s follows, giving literary context to the heroines of Meredith’s three late candidates in the genre, One of Our Conquerors (1891), Lord Ormont and His Aminta (1894), and The Amazing Marriage (1895). The dissertation concludes with a glance at Meredith’s influence on a few early twentieth-century novelists.
- Full Text:
- Date Issued: 2008
An appraisal of basic infrastructural service delivery and community participation at the local level a case study of three municipalities in the Eastern Cape
- Authors: Mamba, Bonginkosi
- Date: 2008
- Subjects: Municipal services -- South Africa -- Eastern Cape Case studies , Housing policy -- South Africa -- Eastern Cape Case studies , Housing -- South Africa -- Eastern Cape Case studies , Local government -- South Africa -- Eastern Cape Case studies
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:958 , http://hdl.handle.net/10962/d1002692 , Municipal services -- South Africa -- Eastern Cape Case studies , Housing policy -- South Africa -- Eastern Cape Case studies , Housing -- South Africa -- Eastern Cape Case studies , Local government -- South Africa -- Eastern Cape Case studies
- Description: Housing provision plays a vital role in meeting basic needs. Dwellings provide the security required for basic functioning and are thus essential for both human development and the alleviation of poverty. This study examines the levels and quality of basic infrastructural service delivery (electricity, water and sanitation) at local government level, focusing on housing. The local government areas studied include Grahamstown Fort Beaufort and Duncan Village. This was done for the purposes of analyzing the effectiveness of the existing housing policy with regard to the adequacy of scale, its developmental logic, implementation and coordination. Justification for basic infrastructural service delivery is based on the Basic Needs Approach [BNA] which forms the cornerstone of the World Bank’s delivery framework. The paper makes use of two methods: firstly, secondary sources are used to provide an impression of the broad policy framework focusing around basic service delivery with housing as the centrepiece. Specific attention is thus given to Integrated Development Plans (IDPs) as this is the level of policy-making responsible for the delivery of these services to communities. Secondly, previously un-analysed data drawn from a household social exclusion survey (2005-2006) conducted in three Eastern Cape municipalities (Buffalo City, Makana and Nkonkobe – representing respectively urban, small town, and rural areas) are evaluated. The data are analysed two ways – graphically and through a regression analysis – to test four hypotheses regarding basic service delivery. Graphical analysis demonstrates that services differ according to housing type and location. It was found that brick houses seem more likely to have better basic services than either shacks or mud dwellings. The results also show that there are inequalities in the provision of certain basic services such as water and sanitation between Duncan Village and Grahamstown. Overall, the results of this study show that government is still faced with major challenges in addressing housing backlogs.
- Full Text:
- Date Issued: 2008
- Authors: Mamba, Bonginkosi
- Date: 2008
- Subjects: Municipal services -- South Africa -- Eastern Cape Case studies , Housing policy -- South Africa -- Eastern Cape Case studies , Housing -- South Africa -- Eastern Cape Case studies , Local government -- South Africa -- Eastern Cape Case studies
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:958 , http://hdl.handle.net/10962/d1002692 , Municipal services -- South Africa -- Eastern Cape Case studies , Housing policy -- South Africa -- Eastern Cape Case studies , Housing -- South Africa -- Eastern Cape Case studies , Local government -- South Africa -- Eastern Cape Case studies
- Description: Housing provision plays a vital role in meeting basic needs. Dwellings provide the security required for basic functioning and are thus essential for both human development and the alleviation of poverty. This study examines the levels and quality of basic infrastructural service delivery (electricity, water and sanitation) at local government level, focusing on housing. The local government areas studied include Grahamstown Fort Beaufort and Duncan Village. This was done for the purposes of analyzing the effectiveness of the existing housing policy with regard to the adequacy of scale, its developmental logic, implementation and coordination. Justification for basic infrastructural service delivery is based on the Basic Needs Approach [BNA] which forms the cornerstone of the World Bank’s delivery framework. The paper makes use of two methods: firstly, secondary sources are used to provide an impression of the broad policy framework focusing around basic service delivery with housing as the centrepiece. Specific attention is thus given to Integrated Development Plans (IDPs) as this is the level of policy-making responsible for the delivery of these services to communities. Secondly, previously un-analysed data drawn from a household social exclusion survey (2005-2006) conducted in three Eastern Cape municipalities (Buffalo City, Makana and Nkonkobe – representing respectively urban, small town, and rural areas) are evaluated. The data are analysed two ways – graphically and through a regression analysis – to test four hypotheses regarding basic service delivery. Graphical analysis demonstrates that services differ according to housing type and location. It was found that brick houses seem more likely to have better basic services than either shacks or mud dwellings. The results also show that there are inequalities in the provision of certain basic services such as water and sanitation between Duncan Village and Grahamstown. Overall, the results of this study show that government is still faced with major challenges in addressing housing backlogs.
- Full Text:
- Date Issued: 2008
Temperature dependence of the HartRAO pointing model
- Authors: Copley, Charles Judd
- Date: 2008
- Subjects: Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5491 , http://hdl.handle.net/10962/d1005277 , Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Description: This thesis investigates control aspects of the Hartebeeshoek Radio Astronomy Observatory (HartRAO) antenna. The installation of a new 22 GHz receiver has required the pointing accuracy to be improved to less than 4 mdeg. The effect of thermal conditions on the the HartRAO antenna pointing offset is investigated using a variety of modelling techniques including simple geometric modelling, neural networks and Principal Component Analysis (PCA). Convincing results were obtained for the Declination pointing offset, where applying certain model predictions to observations resulted in an improvement in Declination pointing offset from 5.5 mdeg to 3.2 mdeg (≈50%). The Right Ascension pointing model was considerably less convincing with an improvement of approximately from 5.5 mdeg to 4.5 mdeg (≈20%) in the Right Ascension pointing offset. The Declination pointing offset can be modelled sufficiently well to reduce the pointing offset to less than 4 mdeg, however further investigation of the underlying causes is required for the Right Ascension pointing offset.
- Full Text:
- Date Issued: 2008
- Authors: Copley, Charles Judd
- Date: 2008
- Subjects: Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5491 , http://hdl.handle.net/10962/d1005277 , Astronomical instruments , Observatories -- South Africa , Telescopes , Astronomical observatories , Astronomy -- Data processing , Antennas (Electronics)
- Description: This thesis investigates control aspects of the Hartebeeshoek Radio Astronomy Observatory (HartRAO) antenna. The installation of a new 22 GHz receiver has required the pointing accuracy to be improved to less than 4 mdeg. The effect of thermal conditions on the the HartRAO antenna pointing offset is investigated using a variety of modelling techniques including simple geometric modelling, neural networks and Principal Component Analysis (PCA). Convincing results were obtained for the Declination pointing offset, where applying certain model predictions to observations resulted in an improvement in Declination pointing offset from 5.5 mdeg to 3.2 mdeg (≈50%). The Right Ascension pointing model was considerably less convincing with an improvement of approximately from 5.5 mdeg to 4.5 mdeg (≈20%) in the Right Ascension pointing offset. The Declination pointing offset can be modelled sufficiently well to reduce the pointing offset to less than 4 mdeg, however further investigation of the underlying causes is required for the Right Ascension pointing offset.
- Full Text:
- Date Issued: 2008
Trends and determinants of inward foreign direct investment to South Africa
- Authors: Rusike, Tatonga Gardner
- Date: 2008
- Subjects: International business enterprises -- South Africa , Investments, Foreign -- South Africa , Economic development -- South Africa , Macroeconomics -- South Africa , Foreign exchange rates -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:995 , http://hdl.handle.net/10962/d1002730 , International business enterprises -- South Africa , Investments, Foreign -- South Africa , Economic development -- South Africa , Macroeconomics -- South Africa , Foreign exchange rates -- South Africa
- Description: Foreign direct investment (FDI) is seen as a way to provide the needed capital inflow to stimulate growth in a domestic economy. FDI can also result in increased employment levels, managerial skills and increase in technology. In efforts to attract FDI, host countries have undertaken various policy incentives to attract foreign investors. This study analyses the trends and determinants of inward FDI to South Africa for the period 1975-2005. The study starts by reviewing FDI literature on its determinants and provides the macroeconomic background and FDI related policies undertaken in South Africa. The trend and sectoral analysis provides the actual nature of FDI flows to South Africa. An empirical model linking theoretical and empirical determinants of FDI is estimated using the Johansen cointegration and VECM framework. The study also augments the cointegration framework with impulse response and variance decomposition analyses to complement the long and short run determinants of FDI. Dummy variables are used in each of the estimated FDI models to take into account the possibility of structural breaks. Results show that relative to the size of the economy and to other developing countries, South Africa still receives low levels of inward FDI. Only are few years are exceptional i.e. 1997, 2001 and 2005. From the sectoral distribution, the financial sector is now the major recipient of FDI followed by the mining and manufacturing sectors. The emergence of the financial sector could suggest that FDI motives could have shifted from the natural resource seeking and market seeking to efficiency seeking FDI. The United Kingdom emerges as the major source of FDI to South Africa followed by United States of America and Germany. Empirical analysis indicated that openness, exchange rate and financial development are important long run determinants of FDI. Increased openness and financial development attract FDI while an increase (depreciation) in the exchange rate deters FDI to South Africa. Market size emerges as a short run determinant of FDI although it is declining in importance. Most of the impulse response analysis confirmed the VECM findings. Variance decomposition analysis showed that FDI itself, imports and exchange rate explain a significant amount of the forecast error variance. The influence of market size variable is small and declining over time.
- Full Text:
- Date Issued: 2008
- Authors: Rusike, Tatonga Gardner
- Date: 2008
- Subjects: International business enterprises -- South Africa , Investments, Foreign -- South Africa , Economic development -- South Africa , Macroeconomics -- South Africa , Foreign exchange rates -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:995 , http://hdl.handle.net/10962/d1002730 , International business enterprises -- South Africa , Investments, Foreign -- South Africa , Economic development -- South Africa , Macroeconomics -- South Africa , Foreign exchange rates -- South Africa
- Description: Foreign direct investment (FDI) is seen as a way to provide the needed capital inflow to stimulate growth in a domestic economy. FDI can also result in increased employment levels, managerial skills and increase in technology. In efforts to attract FDI, host countries have undertaken various policy incentives to attract foreign investors. This study analyses the trends and determinants of inward FDI to South Africa for the period 1975-2005. The study starts by reviewing FDI literature on its determinants and provides the macroeconomic background and FDI related policies undertaken in South Africa. The trend and sectoral analysis provides the actual nature of FDI flows to South Africa. An empirical model linking theoretical and empirical determinants of FDI is estimated using the Johansen cointegration and VECM framework. The study also augments the cointegration framework with impulse response and variance decomposition analyses to complement the long and short run determinants of FDI. Dummy variables are used in each of the estimated FDI models to take into account the possibility of structural breaks. Results show that relative to the size of the economy and to other developing countries, South Africa still receives low levels of inward FDI. Only are few years are exceptional i.e. 1997, 2001 and 2005. From the sectoral distribution, the financial sector is now the major recipient of FDI followed by the mining and manufacturing sectors. The emergence of the financial sector could suggest that FDI motives could have shifted from the natural resource seeking and market seeking to efficiency seeking FDI. The United Kingdom emerges as the major source of FDI to South Africa followed by United States of America and Germany. Empirical analysis indicated that openness, exchange rate and financial development are important long run determinants of FDI. Increased openness and financial development attract FDI while an increase (depreciation) in the exchange rate deters FDI to South Africa. Market size emerges as a short run determinant of FDI although it is declining in importance. Most of the impulse response analysis confirmed the VECM findings. Variance decomposition analysis showed that FDI itself, imports and exchange rate explain a significant amount of the forecast error variance. The influence of market size variable is small and declining over time.
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- Date Issued: 2008