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The role of Hsp90 in the Wnt pathway of MCF7 breast cancer cells

  • Authors: Cooper, Leanne Claire
  • Date: 2011
  • Subjects: Cancer -- Treatment , Heat shock proteins , Cancer cells , Molecular chaperones
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:3985 , http://hdl.handle.net/10962/d1004044 , Cancer -- Treatment , Heat shock proteins , Cancer cells , Molecular chaperones
  • Description: Breast cancer is one of the most common forms of cancer in not only South African women, but women all over the world. The molecular chaperone heat shock protein 90 (HSP90) is upregulated in cancer and is almost exclusively associated with proteins involved in intracellular signal transduction, thus it plays an important role in signalling pathways within the cell. In cancer, there is an aberrant activation of the Wnt signaling pathway, which results in stabilized β-catenin being able to translocate to the nucleus where it can trigger the transcription of oncogenes found to be involved in the self-renewal of cells. The level of β-catenin is usually kept in check by a destruction complex comprising glycogen synthase kinase 3-beta (GSK-3β), axin1, adenomatous polyposis coli (APC) which phosphorylate β-catenin, resulting in its ubiquitination and degradation. HSP90 has been found to be associated with GSK-3β, but whether this association is only transient is debatable. Very little is known about the association of HSP90 with other members of the Wnt pathway in breast cancer. In this study, we have attempted to further identify the direct associations between HSP90 and GSK-3β, β-catenin, p-β-catenin and axin1. Immunofluorescence and confocal microscopy co-localization studies suggested a potential association between HSP90 and these proteins. Treatment with HSP90 inhibitors, 17-AAG and novobiocin resulted in a shift of axin1 to what appeared to be the plasma membrane. The associations of HSP90 with GSK-3β, β-catenin, p-β-catenin and axin1 were confirmed biochemically by co-immunoprecipitation and inhibition using 17-AAG, geldanamycin and novobiocin. We showed, for the first time that HSP90 is associated in a possible complex with β-catenin, p-β-catenin and axin1 therefore is potentially involved in the modulation of p-β-catenin in the Wnt pathway through the stabilization of the destruction complex.
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  • Date Issued: 2011

The role of memory, museums and memorials in reconciling the past : the Apartheid Museum and Red Location Museum as case studies

  • Authors: Sippel, Elizabeth
  • Date: 2011
  • Subjects: Apartheid Museum (Johannesburg, South Africa) Red Location Museum (Port Elizabeth, South Africa) Atrocities -- Museums Apartheid and art Apartheid -- History Historical museums Collective memory Memorialization History -- Psychological aspects Memory (Philosophy) Museum exhibits -- Historiography Museums -- Historiography
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2440 , http://hdl.handle.net/10962/d1005773
  • Description: When South Africa became a democracy, many of its cultural institutions were tainted by the stigma of having been tools for the production and propagation of apartheid ideology. This thesis examines two key facets of post-apartheid museums and memorials. Firstly, how they have repositioned themselves as institutions of cultural and social standing. Secondly, their role as tools of nation building, social change, and creators of national collective memory within the new democratic South Africa. Through an analysis of cultural memory theory pertaining to museology, this study elaborates on the methods employed by museums to incorporate memory into their narratives and in turn, transfer collective memory to their viewers. This thesis provides a comparative study of the architectural, memorial and museological strategies of two post-apartheid museums; the Red Location Museum and the Apartbeid Museum. It examines the contributions of both museums to the introduction of new museological strategies for the successful creation and transmission of South African collective memory. Through this analysis, both the invaluable contributions and the drawbacks of post-apartheid museums as tools for the promotion of new democratic ideologies and philosophies are considered. This thesis does not resolve the arguments and questions which have surfaced regarding cultural institutions as tools for the promotion of reconciliation and the construction of national collective memory within South Africa. As the current climate of memorialisation is one of change and paradox, it is presently impossible to fully quantify post-apartheid museums' roles within South Africa's move toward reconciliation and social change. However, the examination of both the Red Location Museum and the Apartheid Museum reveals the extraordinary change that South African cultural institutions have undergone in addition to their potential to become institutions which facilitate active reconciliation as well as social and cultural growth.
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  • Date Issued: 2011

The role of teacher cognition in the integration of technology into English teaching: a case study

  • Authors: Baron, Elizabeth Mary
  • Date: 2011
  • Subjects: English teachers -- Effect of technological innovations on English teachers -- Psychology English teachers -- Attitudes Language and languages -- Study and teaching -- Computer-assisted instruction Educational technology Computer-assisted instruction
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1753 , http://hdl.handle.net/10962/d1003637
  • Description: Technology, in one or more of its various forms, is now a part of everyday life for most South African citizens. Many schools are equipped with various forms of technology, at great cost to sponsors, schools, parents or the government. However, this technology is not always exploited and full use is not made of it. As access is not the issue, other factors needed to be considered: in this case, teachers’ beliefs, attitudes and knowledge. This thesis explores the cognitive factors which affect the acceptance and use of technology. Teacher cognition and the factors which influence teacher cognition were examined. Following Borg, teacher cognition is defined as “the unobservable cognitive dimension of teaching – what teachers know, believe and think” (Borg, 2003, p. 81). Teacher cognition determines whether or not a teacher will use technology, if the external barrier of access is removed. In order to study the various aspect of teacher cognition, a case study was performed, which studied 6 teachers at 4 schools. All the schools in this study had some level of access to technology. Following Borg, initial experiences with the educational system (i.e. the teacher’s experience as a learner), teacher training, the context the teacher worked in (as well as social factors and private use) and classroom experience were all examined in order to discover the factors which most affect technology acceptance in teaching. The findings show that having easy access to well-maintained and functioning technology cannot be underestimated. In the study, support from other teachers, particularly those in leadership roles, led to an increase in technology use. This support needed to be explicit; general support did not seem to be effective. These findings suggest that technology integration needs to happen at a ‘whole school’ level.
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  • Date Issued: 2011

The role of the principal as school leader in maintaining academic standards in the schooling of at-risk learners: a case study at a school in the northern areas of Port Elizabeth

  • Authors: Draai, Karen Ann
  • Date: 2011
  • Subjects: School management and organization -- South Africa -- Port Elizabeth School principals -- South Africa -- Port Elizabeth Educational leadership -- South Africa -- Port Elizabeth School discipline -- South Africa -- Port Elizabeth Children with social disabilities -- South Africa -- Port Elizabeth Academic achievement -- South Africa -- Port Elizabeth
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1955 , http://hdl.handle.net/10962/d1008278
  • Description: Many disadvantaged schools in South Africa are characterised by poor performance, which is often linked to the legacy of the apartheid regime. Yet, some disadvantaged schools are surviving and even producing excellent results. Many successful businessmen, politicians and academics can attest to the success of these schools, being a product of such schools. Leadership, which has received a lot of attention in recent years, are often the cause of schools failing to produce the expected results. Previous studies have shown that leadership is the key to academic excellence and that to lead disadvantaged schools to success requires strong leaders with moral purpose, who possess qualities of transformational leaders, but also leaders who can focus on instructional leadership practices. This study focuses on the role of leadership in maintaining academic standards at a school in the northern areas of Port Elizabeth. The school has a proud tradition of good academic performances and has even been labelled as a 'model C school in the northern areas'. It has been found that teachers are committed and hardworking and the principal is perceived as having expecting high expectations for the children of the area. He believes as an educator one should never give up on the children. The study found that the principal is a strong leader who shows characteristics of a transformational leader and has the drive of an instructional leader to lead the school and to maintain academic standards. He is a well-respected leader who leads with moral purpose and who has the desire to uplift the community. The study has the potential to provide guidance and encouragement to school principals, and to inform the Department of Education's leadership training programmes.
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  • Date Issued: 2011

The role of the state and the environment in indigenous livestock farming: a case study of Debe Marela, Middledrift area, Eastern Cape

  • Authors: Hashe, Luvuyo E
  • Date: 2011
  • Subjects: Farmers -- South Africa -- Eastern Cape , Livestock -- South Africa -- Eastern Cape , Traditional farming -- South Africa -- Eastern Cape , Agriculture and state -- South Africa -- Eastern Cape , Agriculture and politics -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MPhil (Environmental Studies)
  • Identifier: vital:11877 , http://hdl.handle.net/10353/372 , Farmers -- South Africa -- Eastern Cape , Livestock -- South Africa -- Eastern Cape , Traditional farming -- South Africa -- Eastern Cape , Agriculture and state -- South Africa -- Eastern Cape , Agriculture and politics -- South Africa -- Eastern Cape
  • Description: The study focused on the role of the State and the environment in indigenous livestock farming in Debe Marela in Middledrift. Although communal farmers in the area used ethnoveterinary medicines to treat and prevent animal diseases, they also widely used conventional medicines, as these often provided a remedy to animal diseases. The livestock farmers believed in indigenous knowledge which empowered them in using herbs to a certain extent, but the latter was preferred. The Department of Agriculture has featured as a support institution and although livestock farmers in the area have participated in and benefitted from state programmes, they believe that they needed more interventions such as visits from veterinary surgeons, Extension Officers and Animal Health Technicians. The study therefore attempts to address the gaps highlighted in the work of other researchers.
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  • Date Issued: 2011

The role of the state in rural development: appropriate strategies for the rural development program in Mbhashe municipality in Eastern Cape

  • Authors: Futshane, Patrick Sivuyile
  • Date: 2011
  • Subjects: Rural development -- South Africa -- Eastern Cape , Rural development -- Government policy -- South Africa -- Eastern Cape , Community development -- South Africa
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9073 , http://hdl.handle.net/10948/d1008409 , Rural development -- South Africa -- Eastern Cape , Rural development -- Government policy -- South Africa -- Eastern Cape , Community development -- South Africa
  • Description: Poverty and inequality in South Africa are a result of the impact of apartheid policy, which inter alia stripped people of their assets, especially land, distorted economic markets and social institutions through racial discrimination, and resulted in violence and destabilization. This has shaped the nature of poverty in South Africa. In view of the above, the South African government has introduced a programme known as the Comprehensive Rural Development Strategy in order to redress the imbalances of the former apartheid regime. In this strategy it is envisaged that vibrant, equitable and sustainable rural communities and food security for all will be achieved. In this study, I investigated the implementation of rural development programmes in the Mbhashe local municipality of the Eastern Cape Province in order to determine appropriate intervention strategies. This study focused on Ward18 of Mbhashe local municipality on a village known as Nkwalini Bafazi. This is a village that has been earmarked by the government to be a pilot site for the Rural Development Programme. This project is at the initial stage of social facilitation. In other words this research project is designed to investigate the process of Rural Development and how it can be implemented in the Mbhashe Local municipality in order to alleviate poverty and underdevelopment. For the purpose of the study, a mixed research approach was chosen. This means that the study used both the qualitative and quantitative approaches for in-depth understanding and verification. Questionnaires and structured interview questions were used to collect the data. Participatory Rural Appraisal (PRA) was also used for the purpose of observing and involving the community in the exercise. Data was collected from residents by conducting surveys, making use of questionnaires. Structured interviews were conducted with government officials (Department of Rural Development and Agrarian Reform) in order to understand the situation better.
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  • Date Issued: 2011

The short-term effect on shareholder wealth of banking mergers and acquisitions during periods of real economic expansion and contraction

  • Authors: Kerr, Gordon Roy
  • Date: 2011
  • Subjects: Bank mergers , Consolidation and merger of corporations , Business cycles , Corporations -- Investor relations , Stockholder wealth , Rate of return
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1108 , http://hdl.handle.net/10962/d1013442
  • Description: Controversy currently exists over whether abnormal returns (ARs) are earned by shareholders of bidder and target banks through a Merger and Acquisition (M&A). The state of the economy in which the firms operate is often mentioned as a reason for firms engaging in M&As, however, the extent to which economies influence the ARs of shareholders is unknown. Following MacKinlay (1997), the aim of this study is to determine the average ARs earned or lost by shareholders of several banks around the world during an M&A. The results obtained may indicate that shareholders of bidding firms consider an M&A to be a wealth-destroying event irrespective of the state of the economy. It would seem that target firms’ shareholders consider M&As to be wealth-creating events when they occur during a period of real economic expansion. However, during periods of real economic contraction, target firms’ shareholders consider M&As to be wealth-destroying events. Thus, the state of an economy during an M&A can affect average ARs considerably.
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  • Date Issued: 2011

The simulation of vehicle engine cooling in a climatic chamber

  • Authors: Badenhorst, Kenneth Merwin
  • Date: 2011
  • Subjects: Automobiles -- Motors -- Cooling systems , Automobiles -- Air conditioning
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:9615 , http://hdl.handle.net/10948/1454 , Automobiles -- Motors -- Cooling systems , Automobiles -- Air conditioning
  • Description: The simulation of vehicle engine cooling validation in a Climatic chamber will benefit all vehicle manufacturers that are responsible for the design or the localization of parts used in a vehicle's engine cooling system. The ability to test the vehicle in-house allows testing at any time of the year; it provides repeatable and comparative data, and accelerates component level approval, which in itself reduces program timing and cost. For this dissertation road level testing was conducted in Upington using a TD1200 Superflow towing dynamometer, while the in-house testing was performed on a ROTOTEST chassis dynamometer in a Climatic chamber. All tests were conducted according to GENERAL MOTORS SOUTH AFRICA global testing standards. Statistical analyses of the test data were used to determine the relationship between parameters measured and results obtained. The major contributors to the simulation process was identified and implemented to improve measurement quality and test results. The result was an accurate simulation between road and chamber testing, hence the possibility of moving away from road testing and conduct simulated chamber testing. The presented dissertation is useful for the understanding of basic vehicle cooling testing and the methodology of simulated testing in an environmentally controlled chamber.
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  • Date Issued: 2011

The spatial evolution of the chemotaxis proteins of the Bacillus subtilis group

  • Authors: Yssel, Anna Elizabeth Johanna
  • Date: 2011
  • Subjects: Chemotaxis , Bacillus subtilis , Bacillus (Bacteria) , Homology (Biology) , Plants -- Microbiology
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4027 , http://hdl.handle.net/10962/d1004087 , Chemotaxis , Bacillus subtilis , Bacillus (Bacteria) , Homology (Biology) , Plants -- Microbiology
  • Description: The aim of this work was to study spatial evolution of the chemotaxis proteins of a group of plant-associated soil-dwelling bacteria vernacularly referred to as the B. subtilis group. This was achieved by creating homology models for the chemotaxis proteins if a suitable template was available, and by analysing the selective forces (positive, purifying or neutral) acting upon the chemotaxis proteins. Chemotaxis is the phenomenon in which bacteria direct their movement towards more favourable conditions, and is critical for processes such as obtaining nutrients, escaping toxic compounds, host colonization and bio-film formation. Members of the B. subtilis group exhibit different preferences for certain host plants, and it is therefore feasible that their chemotactic machinery are fine-tuned to respond optimally to the conditions of the various niches that the strains inhabit. Homology models were inferred for the plant growth promoting B. amyloliquefaciens FZB42 proteins CheB, CheC, CheD, CheR, CheW and CheY. The interactions between: CheC-CheD, the P1 and P2 domains of CheA with CheY and CheB, and the P4 and P5 domains of CheA with CheW were also modelled. The hydrophobic interactions contributing to intra- and inter-protein contacts were analysed. The models of the interactions between CheB and the various domains of CheA are of particular interest, because to date no structures have been solved that show an interaction between a histidine kinase (such as CheA) and a multidomain response regulator (such as CheB). Furthermore, evidence that phospho-CheB may inhibit the formation of phospho-CheY by competitively binding to the P2 domain of CheA is also presented. Proteins were analysed to determine if individual amino acid sites are under positive, neutral or purifying selection. The Methyl Accepting Chemotaxis Proteins (MCPs), CheA and CheV were also analyzed, but due to a lack of suitable templates, no homology models were constructed. Site-specific positive and purifying selection were estimated by comparing the ratios of non-synonymous to synonymous substitutions at each site in the sequences for the chemotaxis proteins as well as for the receptors McpA, McpB, and McpC. Homology models were coloured according to intensity of selective forces. It was found that the chemotaxis proteins of member of the B. subtilis group are under strong evolutionary constraints, hence it is unlikely that positive selection in these proteins are responsible for the differences in habitat preference that these organism exhibit.
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  • Date Issued: 2011

The strategic management of intellectual capital : a case study in the banking and financial services sector in Zambia

  • Authors: Banda, Japhet Mathias
  • Date: 2011
  • Subjects: Intellectual capital -- Management , Intellectual capital -- Zambia , Banks and banking -- Zambia , Financial services industry -- Management -- Zambia
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1178 , http://hdl.handle.net/10962/d1002795 , Intellectual capital -- Management , Intellectual capital -- Zambia , Banks and banking -- Zambia , Financial services industry -- Management -- Zambia
  • Description: Fundamental changes in the global economy are changing the basis of organisational competitive advantage. The challenge in attaining a competitive advantage is characterised by factors such as increased competition, market volatility, geographically dispersed operations, customer awareness, raising workforce diversity and stringent regulatory regimes. These factors have driven, and in turn have been driven by, an increasing complexity of products, services and the processes that create value, resulting in changes in the structural and functional dimensions of the organisation. Business executives and academics recognise the shift in value creating assets from the traditional land, labour and capital to intangible assets such as knowledge and information becoming the most important resources an organisation can muster.The combination and integration of intangible assets such as human resources, structural and relational resources has been grouped under the umbrella of intellectual capital. This study comprises of a single descriptive case study analysis to ascertain how intellectual capital is managed strategically to gain a competitive advantage in an organisation in the banking and financial services sector in Zambia. Based on document review and semi-structured interviews, this thesis investigated the extent to which an organisation in the banking and financial services sector in Zambia leveraged intellectual capital to gain competitive advantage. In this study it was found that there is a low level appreciation of the intellectual capital phenomenon as a strategic management tool in the participating organisation. However, the organisation has adopted aspects of intellectual capital and has implemented them successfully accounting for the organisation‘s competitive edge in the market.
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  • Date Issued: 2011

The teaching of mathematics in multigrade classrooms at the upper primary phase in selected Namibian schools

  • Authors: Kapenda, Loide Ndakondjelwa
  • Date: 2011
  • Subjects: Mathematics -- Study and teaching -- Namibia Education, Elementary -- Namibia Combination of grades -- Namibia
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1796 , http://hdl.handle.net/10962/d1003681
  • Description: The Namibian curriculum favours knowledge with understanding and application of knowledge and skills, because facts that are learned with understanding are easier to remember. This made learners to be able to represent mathematical situations in different ways and for different purposes. It also motivates teachers to contextualise the content to make mathematics teaching and learning more interesting and enjoyable to teachers and learners. However, some mathematics teachers are challenged by being required to teach multigrade classes, due to a massive response to improved access to education.Multigrade teaching is seen as a difficult practice especially when teachers are not well prepared to teach combined grades. This case study focused on the teaching of mathematics at Upper Primary Phase. An Interpretive paradigm was used to understand the teachers’ experiences and their teaching ethods. Hence the study aimed to investigate how teachers deliver their mathematics lessons in multigrade classrooms, considering the good practices and challenges that may occur. The findings revealed that teachers mostly use their monograde pedagogical knowledge,resulting in using quasi-monograde with a common timetable approach when teaching mathematics in multigrade settings. Although learners have access to the common mathematics syllabus, the quality of teaching the subject in multigrade classrooms seems to be affected due to the lack of teacher training in multigrade teaching. Also, equity and democracy need to be considered more than it currently is in terms of resource distribution to multigrade schools. Good practice of multigrade teaching existed in building on lower grade competencies, introducing lessons with common activities, as well as the concentration on lower grades which make learners independent. However, insufficient time, lack of knowledge in multigrade and curriculum knowledge in particular seem to challenge teachers and learners. Therefore, multigrade teachers need to be part of curriculum development for them to master the syllabus. These teachers will assist in developing multigrade resources for integration, contextualisation and more enrichment activities for high achievers.
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  • Date Issued: 2011

The television teen drama as folktale

  • Authors: Jones, Denna Louise
  • Date: 2011
  • Subjects: Teen television programs , Television and teenagers
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:8382 , http://hdl.handle.net/10948/1471 , Teen television programs , Television and teenagers
  • Description: In 1927 Vladimir Propp published a book in which he defined the characteristics and morphology of fairytales. His work was a groundbreaking one that forced scholars to question the way in which stories and storytelling affect the fabric of society and its ideals. Since 1927 much has changed with regards to the way in which stories are told. Technology has changed the way in which people interact and communicate with each other. Media conglomerates such as Walt Disney, Time Warner Company and News Corporation are driven to create stories and media that will deliver consumers to their advertisers. This paper sought to examine the way in which the teen drama has redefined the fairytale, and to establish whether Propp’s work on the morphology of fairytales can still be seen as valid today. Following an in depth literature review that sought to establish the foundations of fairytales, narratives, Propp’s morphology, the development of television as well as the teen television drama, the findings of this paper were established through a detailed content analysis of the first season of three modern teen television dramas – The O.C., One Tree Hill and Gossip Girl. The research found that while some of Propp’s functions may have been adapted to take on a more modern role and a few others became defunct, the majority of the functions of the dramatis personae could be found almost unchanged within the teen television drama. Gossip Girl, in particular demonstrated that it was highly aware of its allusions to the fairytale analogy with numerous references throughout its first season to fairytales such as Snow White and the Seven Dwarves, Cinderella and Beauty and the Beast. More than any of the other shows, Gossip Girl appeared deliberate in its references to the world of fairytales, a world in which the damsel in distress is always rescued by her knight in shining armour, and where monarchy reigns supreme. While humans have continued to evolve and the modes of storytelling have changed significantly since Propp first published his paper, the teen television drama has not yet redefined the characteristics of Propp’s morphology. At most it has modernised them making them relevant to the 21st century viewer.
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  • Date Issued: 2011

The unattainable "betterlife" : the discourses of the homogenised South African black emerging middle-class lifestyle in Drum magazine

  • Authors: Hardy-Berrington, Michelle
  • Date: 2011
  • Subjects: Lifestyles -- South Africa , Blacks in mass media , Journalism -- South Africa , Drum (Magazine)
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:8448 , http://hdl.handle.net/10948/1426 , Lifestyles -- South Africa , Blacks in mass media , Journalism -- South Africa , Drum (Magazine)
  • Description: Drum and YOU are two general interest magazines which share the same publisher, language (English), format, and are compiled by many of the same journalists and editors. The greatest distinction between the two publications is that Drum is aimed at a specifically black readership while YOU caters for a general, cosmopolitan South African readership. With various commonalities in the production of Drum and YOU, what do the differing commodities, discourses and cultural repertoires presented in Drum in comparison to YOU communicate about the conceived black audience/s by the magazines'producers? In contrast to the dominant body of research on Drum magazine, which has been dedicated to pre-1994 editions, the investigation undertaken in this research focuses on post-apartheid editions of Drum under the commercial ownership of Media24. This also provides a unique opportunity to compare and contrast Drum and YOU which has not been extensively explored in the past. A theoretical study on some of the credible, plausible discourses circulating in Drum drew from Laden's (1997; 2003) research on black South African middle-class magazines and Steyn's (2001) studies on narratives of whiteness including colonial and apartheid policy discourses. Other theory considered to identify types of discourses included those on self-stylisation, excorporation and the historic, cultural influence of Drum in black South African identity formation. Critical discourse analysis is employed to discern the distinction and boundaries between the conceived black middle-class readerships of Drum and YOU. A multifarious content is present in Drum magazine for the diverse post-apartheid black middle-class of South Africa. Discourses of the African traditional and conservative feature side-by-side with contemporary, liberal and Western discourses; while the cultural repertoires of the bourgeois middle-class are presented beside the more modest commodities of the lower-income working class. This communicates an increasingly integrated South African consumer culture and a willing bourgeois solidarity amongst middle-class groups, creating a larger consumer class for advertisers and marketers in South Africa. In comparison to YOU, the discourses of the conservative-African-traditional provide a distinctive feature of Drum. However, this discourse is limited to realms which do not threaten the prevailing magazine culture of consumerism and the dominant global culture of Western science and reason. The other great distinction from YOU is Drum’s prominent educating and didactic function, offering an aspirant lifestyle by marketing a range of Western technologies and commodities. This is in addition to suggesting options for desirable social conduct and socially-responsible behavior.
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  • Date Issued: 2011

The unstable earth landscape and language in Patrick White's Voss, Michael Ondaatje's The English Patient and David Malouf's An Imaginary Life

  • Authors: Lee, Deva
  • Date: 2011
  • Subjects: White, Patrick, 1912-1990. Voss Ondaatje, Michael, 1943- The English patient Malouf, David, 1934- An imaginary life Language and languages in literature English fiction -- 20th century -- History and criticism
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2238 , http://hdl.handle.net/10962/d1002281
  • Description: This thesis argues that Patrick White’s Voss, Michael Ondaatje’s The English Patient and David Malouf’s An Imaginary Life depict landscape in a manner that reveals the inadequacies of imperial epistemological discourses and the rationalist model of subjectivity which enables them. The study demonstrates that these novels all emphasise the instabilities inherent in imperial epistemology. White, Ondaatje and Malouf chart their protagonists’ inability to comprehend and document the landscapes they encounter, and the ways in which this failure calls into question their subjectivity and the epistemologies that underpin it. One of the principal contentions of the study, then, is that the novels under consideration deploy a postmodern aesthetic of the sublime to undermine colonial discourses. The first chapter of the thesis outlines the postcolonial and poststructural theory that informs the readings in the later chapters. Chapter Two analyses White’s representation of subjectivity, imperial discourse and the Outback in Voss. The third chapter examines Ondaatje’s depiction of the Sahara Desert in The English Patient, and focuses on his concern with the ways in which language and cartographic discourse influence the subject’s perception of the natural world. Chapter Four investigates the representation of landscape, language and subjectivity in Malouf’s An Imaginary Life. Finally, then, this study argues that literature’s unique ability to acknowledge alterity enables it to serve as an effective tool for critiquing colonial discourses.
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  • Date Issued: 2011

The use of a Roving Creel Survey to monitor exploited coastal fish species in the Goukamma Marine Ptrotected Area, South Africa

  • Authors: Van Zyl, Carika Sylvia
  • Date: 2011
  • Subjects: Fishing surveys , Fishery management -- South Africa , Fish populations -- South Africa
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:10748 , http://hdl.handle.net/10948/1348 , Fishing surveys , Fishery management -- South Africa , Fish populations -- South Africa
  • Description: A fishery-dependant monitoring method of the recreational shore-based fishery was undertaken in the Goukamma Marine Protected Area (MPA) on the south coast of South Africa for a period of 17 months. The method used was a roving creel survey (RCS), with dates, times and starting locations chosen by stratified random sampling. The MPA was divided into two sections, Buffalo Bay and Groenvlei, and all anglers encountered were interviewed. Catch and effort data were collected and catch per unit effort (CPUE) was calculated from this. The spatial distribution of anglers was also mapped. A generalized linear model (GLM) was fitted to the effort data to determine the effects of month and day type on the variability of effort in each section. Fitted values showed that effort was significantly higher on weekends than on week days, in both sections. A total average of 3662 anglers fishing 21 428 hours annually is estimated within the reserve with a mean trip length of 5.85 hours. Angler numbers were higher per unit coastline length in Buffalo Bay than Groenvlei, but fishing effort (angler hours) was higher in Groenvlei. Density distributions showed that anglers were clumped in easily accessible areas and that they favored rocky areas and mixed shores over sandy shores. Catch documented between October 2008 and December 2009 included a total of 361 fish, of 27 species from 12 families. Sparidae had the highest contribution (12 species). A Shannon-Weiner diversity index showed that diversity was higher in Buffalo Bay (0.81) than Groenvlei (0.57). Catch composition of retained fish (336 individuals) showed that the six numerically most important species were blacktail (Diplodus sargus capensis) (66 percent of catch), followed by galjoen (Dichistius capensis) at 11 percent, Cape stumpnose (Rhabdosargus holubi), belman (Umbrina robinsonii) and strepie at 3 percent, and elf (Pomatomus saltatrix) at 2 percent. Catch composition of an earlier study in Goukamma (Pradervand and Hiseman 2006) was compared with the present study, as well as data from the De Hoop MPA, which is closed to fishing. A multi-dimensional scaling plot of catch composition showed tight clustering of the De Hoop samples, and high variability among the Goukamma samples. A bray-curtis similarity index and dendrogram of similarity between study sites and study periods showed that there was an 83 percent similarity among De Hoop samples and a 75 percent similarity among Goukamma samples (ignoring the two outliers). The two sites are different with respect to species composition, but this is expected because they are different areas. Differences between time periods in Goukamma (i.e. the previous study versus the present study) were not significant. The most significant result from the catch composition analyses is the high variability among the Goukamma samples. This can be explained by the variable fishing methods used by anglers in Goukamma, compared with the standardized fishing methods used by researchers in De Hoop, and the fact that fish are more abundant and populations are more stable in De Hoop – giving higher sample sizes which reduce the variability in the statistics. Species-specific CPUE was calculated for the six numerically most important species. In both sections, CPUE was highest for blacktail, with an average of 0.133 fish per hour for Groenvlei, and 0.060 fish per hour for Buffalo Bay, over the 12 months. The second highest CPUE values per section were 0.030 for galjoen in Groenvlei and 0.039 for strepie in Buffalo Bay. Remaining CPUE values ranged from 0.014 (belman in Groenvlei) to the lowest value of 0.001 (strepie in Groenvlei). Total estimated CPUE for these six species in the MPA using the estimated effort and catch results amounted to 0.018 fish per hour. An annual estimated 3897 fish were landed in the reserve during 2009. Most fish (n=2481, 64 percent) were caught in the Groenvlei section. Numbers of blacktail were the highest of all species, within both sections (2353 fish). Strepie was the next most common (561 fish), but was caught almost entirely within the Buffalo Bay section (97 percent of individuals), followed by galjoen (548 fish) caught mostly within the Groenvlei section (92 percent of individuals). Size comparisons of the six species between the Goukamma and De Hoop MPAs showed that ranges in size are similar, but there are substantial differences in mean sizes between the two MPAs. Sample sizes of all species from the Goukamma MPA were too small to draw conclusions about stock status, except for blacktail. The Goukamma MPA is a popular fishing destination and angler effort is high. It can be considered a node of exploitation for surf zone fish, for which it provides no protection. Even though the MPA allows shore angling, sustainable fishing practices should be incorporated in management plans if the MPA is expected to protect and conserve its stocks. Of noteworthy concern is the occurrence of illegal night fishing (the public may not enter the reserve between sunrise and sunset) which leads to underestimates of catch and effort (night surveys were not conducted because of safety concerns). It is recommended that more communication should take place between the angling community and the reserve management. Sign boards giving information on species which are under pressure, and why they are under pressure, with a short explanation on their life cycles, is advised. The roving creel survey method was suitable for the study area and delivered statistically rigorous results. I thus recommend that it is continued in the future by management. I make some recommendations for reducing costs of future surveys, as well as for altering the survey design if funds are very limited.
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  • Date Issued: 2011

The use of Afrikaans-English-Xhosa code switching and code mixing as a teaching strategy in the teaching of Afrikaans additional language in the secondary schools of the Transkei Region of the Eastern Cape Province (RSA)

  • Authors: Songxaba, S L
  • Date: 2011
  • Subjects: Code switching and code mixing -- Teaching -- Afrikaans-English-Xhosa , Education (Secondary) -- Afrikaans language
  • Language: English
  • Type: Thesis , Masters , M Ed
  • Identifier: vital:18414 , http://hdl.handle.net/11260/d1006565
  • Description: This study seeks to report on the investigation into the need to use code switching as one of the language teaching strategies in the teaching and learning of Afrikaans as Additional Language in the FET band, in predominantly Xhosa-speaking environments in the Eastern Cape. The study was conducted in twelve secondary schools of the Transkei where Afrikaans is taught as an additional language. The sample of the study comprised the educators, the learners and the school managers of the twelve researched schools. The research was a case study of the selected schools. The participants were studied in their own environment and the data was collected by means of both the interviews and structured questionnaires. South Africa is a multilingual and multicultural country. This state of affairs calls for a serious re-evaluation of the existing teaching methodologies. Children acquire language skills in and outside the classroom in two different ways in multilingual societies. While children acquire proficiency in languages outside the classroom in a natural way, in the classroom they are constrained by rigid purist rules that compel them to learn languages in artificial ways. This manner of language acquisition in the predominantly Xhosa-speaking environments of the Eastern Cape, often goes hand in hand with code switching from source language to target language and vice versa. These children can be described as compound informal bilinguals (polyglots) as far as the indigenous languages are concerned since they acquire the indigenous languages from early childhood in natural settings. In the context of formal acquisition of European languages and Afrikaans in schools, they can be categorised as coordinate bilinguals. The linguistic disparities between classroom and natural acquisition practices were revealed in this investigation. In the classroom, code switching has two contradictory sides. On one hand code switching provides the teacher with ease of expression, confidence and satisfaction that the learners understand the lesson. Notwithstanding the dynamic attributes of code switching in the classroom, the learners are faced with the dilemma of having to avoid code switching as much as possible in the examinations since there is no room for code switching in the examinations. This investigation showed that despite the fact that non-mother tongue teaching is supposed to take place through the medium of the target language, both the teachers and the learners admitted that they code switch during Afrikaans classes and they perceive code switching as the best way to facilitate understanding. The findings of this study revealed that code switching was a natural and inevitable strategy in teaching an additional language. However, it also surfaced that some teachers resorted to using code switching because of their own lack of proficiency in the target language. Informed by the above findings, the study recommended that code switching be considered as one of the strategies to be used in the teaching and learning of Afrikaans as additional language. It was also recommended that learners be credited if they used code switching in the examinations since all respondents admitted that code switching was every-day practice in the classroom. This, however is to be done with extreme caution and with the sole purpose of assisting the learners achieve full mastery of the target language at the end of their learning career. Since this kind of exercise needs highly-skilled personnel, it was recommended that practising teachers be retrained and resource materials be expanded to all schools that offer Afrikaans as additional language. Although the arguments presented in this investigation do not reject the reality of the impeding effect code switching might have on the learning of an additional language, the study maintains that for purposes of mutual understanding, code switching is an enabling factor that impacts positively on the teaching-learning situation.
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  • Date Issued: 2011

The use of e-mail among students and lecturers at Nelson Mandela Metropolitan University: a guide reasearch report

  • Authors: Ntsiko, Blondie Bonisa Blossom
  • Date: 2011
  • Subjects: Telecommunication in education , Educational technology , Electronic mail systems in education
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9119 , http://hdl.handle.net/10948/d1015970
  • Description: This research seeks to determine the impact of the use of e-mail between lecturers and students at the NMMU. New students at universities, and especially first year undergraduates, can sometimes have difficulties in addressing their concerns, questions and ideas about their courses and are faced with the difficulty of adapting to a new lifestyle and the university environment. Interactivity and feedback are key contributors to providing an effective learning environment for such students. Lecturers provide the main source for university students to discover what is expected of them to identify the key learning goals related to a course, from a lecturer (Braxton, Milem & Sullivan, 2000:569). The increase in student numbers in Higher Education over the last decade has been dramatic, placing greater pressures on academic staff in terms of contacting students. As computer technology becomes both more prevalent and more intrusive, its use and misuse are increasingly falling under the critical scrutiny of academic researchers. If traditional educational methods are supported, such support must be flexible enough to accommodate technology, but as a means, not an end. The research of e-mail impact between students and lecturers is still very new and is open for additional study (Braxton, et al. 2000:590).
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  • Date Issued: 2011

The use of environmental impact assessments (EIAs) in promoting sustainable development

  • Authors: Ngesi, Hlekani Ntombizakithi
  • Date: 2011
  • Subjects: Environmental impact analysis -- South Africa -- Port Elizabeth , Sustainable development -- Environmental aspects -- South Africa , Environmental management -- Planning , Environmental impact analysis -- Law and legislation -- South Africa -- Port Elizabeth
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9045 , http://hdl.handle.net/10948/1614 , Environmental impact analysis -- South Africa -- Port Elizabeth , Sustainable development -- Environmental aspects -- South Africa , Environmental management -- Planning , Environmental impact analysis -- Law and legislation -- South Africa -- Port Elizabeth
  • Description: The overall aim of the case study was to investigate the effectiveness of EIAs in NMB and to determine whether EIA legislation and implementation can lead to the promotion of sustainable development practices. The research made use of the qualitative research methodology and followed the inductive approach by critically evaluating the EIA process in the NMBM using the case study approach. This was supported by a survey which was administered to willing participants chosen at random whose extensive experience is relevant to this research topic. Interviews involved direct personal contact with participants who were asked to respond to questions relating to the research study. The research sample consisted of eight participants. The local authority was represented by two participants, the Environmental Assessment Practitioners were represented by five participants and the Non-Governmental Organization was represented by 1 participant. The first objective of the study was to evaluate the role of government during the EIA process. The results showed that EAPs in NMB municipality are relatively satisfied with how the municipality is handling the EIA process with regards to commenting on both internal and external applications. There was however a view that most municipalities lack sufficient capacity to be able to comment on EIA applications as required by legislation and that human resource issues were one of the contributing factors where skills are concerned. The second objective of the study was to examine and evaluate the role of civil society and NGOs during the EIA process. The results showed that NGOs are quite vocal and very much involved in driving the sustainable development agenda and that in South Africa NGOs are usually the ones that are responsible for getting the message across in the form of environmental education and awareness through the translation of environmental knowledge into practical on the ground conservation. 4 The third objective of the study was to analyze the responsibilities of Environmental Assessment Practitioners (EAPs) in the EIA process. The EAPs had a very good knowledge of the EIA process and what was required of them in terms of the process. The fourth objective was to evaluate compliance to the Environmental Management Plan (EMP) by the applicant once Environmental Authorisation (EA) has been granted by the responsible authority. The results showed that all the participants were in agreement in terms of the need for EMPs but their lack of enforcement was highlighted as a very serious problem which is in need of urgent attention sooner rather than later. It was also highlighted that EMPs were generally not adhered to due to their lack of legal status and that many developers viewed EMPs as guideline documents rather than something that has legally enforceable provisions. The study concluded that EIAs are not effective in meeting the requirements of NEMA and promoting sustainable development agenda. The IEM planning process which has largely been focused on EIAs as a tool to support decision-making by specialists and hence promote sustainable development has its weaknesses and has not been successful in driving the sustainable development agenda in Nelson Mandela Bay
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  • Date Issued: 2011

The use of fish species in a marine conservation plan for KwaZulu-Natal

  • Authors: Haupt, Philip
  • Date: 2011
  • Subjects: Fishery conservation -- South Africa -- KwaZulu Natal , Marine resources conservation
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:10681 , http://hdl.handle.net/10948/1528 , Fishery conservation -- South Africa -- KwaZulu Natal , Marine resources conservation
  • Description: This study formed part of a larger provincial marine systematic conservation plan for KwaZulu-Natal (KZN), South Africa, called SeaPLAN. Owing to budget and time constraints, not all ± 1640 fish species that occur in the region were considered. A method to prioritise species was therefore developed to identify those species which were most at most risk of being excluded by a conservation plan based primarily on habitat representation (i.e. SeaPLAN). The method was based on three underlying principles: (i) species with limited conservation options; (ii) threatened species; and (iii) inherently vulnerable species. From these three principles, seven criteria were defined (e.g. endemic or rare species). Sixtyseven species met the qualifying conditions for these criteria and were consequently included in this study (FishPLAN). In order to map the distributions of these 67 fish species, the spatial and temporal accuracy of existing marine fish data for KZN was investigated. Only 17 percent of the data evaluated met the spatial resolution requirements of 1 km2, while temporal resolution was high: >99 percent of the data were collected at daily resolution. A resulting recommendation is that future data collection employ handheld data recording devices (with GPS capability), in order to increase the spatial accuracy of data, minimise human error and improve the efficiency of data flow. Species life cycle envelopes (SLICES) were developed to capture spatial differences in areas occupied during three life-cycle phases (reproductive, juvenile and feeding). Two distribution modelling techniques were used: Maxent, which uses quantitative data, and CHARMS (cartographic habitat association range models), which uses qualitative range data. A combination of statistical and biological criteria was used to determine the most informative and appropriate model for each species. Species distribution models (SDMs) were constructed for three temporal partitions of the data: annual, summer and winter. Patterns of species richness developed from the seasonal models showed seasonal differences in patterns that conformed to known seasonal distributions of fish assemblages: richness was higher in southern KZN during winter, while it was higher in northern KZN during summer. The resulting SDMs were used to develop a conservation plan for fish: conservation targets were set using the minimum recommended baseline of 20 percent of a species’ range, to which biological retention targets (additional proportion of the range) were added, in an attempt to ensure species persistence. The conservation targets were then adjusted using catch per unit effort (CPUE) data to match seasonal abundance of a given species. Within the existing network of marine protected areas (MPAs), none of the species’ targets are met by MPA sanctuary zones (zone As) alone, and all species require greater areas of protection. Three areas, namely offshore of the Tugela River mouth, the reefs offshore of Durban, and Aliwal Shoal, were consistently identified as being important in addition to existing MPAs for conservation of the fish species investigated. The greater efficiency of a seasonal MPA network to protect seasonally varying distributions of biodiversity, suggests that this may be a useful tool to consider in conservation management. The outcome of a conservation plan from this study (FishPLAN) was finally compared with the broader, more inclusive conservation plan, SeaPLAN. This comparison demonstrated how conservation plans based on a single group of species run the risk of identifying areas that are appropriate only for the relevant species, and might fail to conserve biodiversity as a whole.
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  • Date Issued: 2011

The use of lean tools to increase productivity and improve efficiency in Port Elizabeth Enforcement Audit

  • Authors: Bantom, Phumeza Patience
  • Date: 2011
  • Subjects: Lean manufacturing , Quality control -- Auditing , Waste minimization , Auditing, Internal
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:8645 , http://hdl.handle.net/10948/d1008159 , Lean manufacturing , Quality control -- Auditing , Waste minimization , Auditing, Internal
  • Description: Lean philosophy is based on the continuous quest to improve the organisation‟s processes by creating a culture and operating principles which eliminate all non value adding activities within organisation„s processes. Manufacturing firms consider the adoption of the Lean tools as basic requirements for achieving World Class operational excellence or Best Practice. For some time, lean has been used by the manufacturing organizations. Most organizations understand that lean will help them survive global competition and stay in business. The objective of this study is to investigate how lean manufacturing tools can be used to improve efficiency and enhance the embedding of a continuous improvement culture in the South African Revenue Service Enforcement Audit Port Elizabeth. The activities that took place in Enforcement Audit Port Elizabeth from September 2010 until 31 October 2011 were observed. During the study, an introductory presentation by the researcher was made to Regional Enforcement Management and staff in general, the presentation was to introduce the study highlighting different Lean tools. Thereafter the Port Elizabeth audit staff members were engaged formally, using surveys to assess their underlying mindset and behaviour as well as informally, using unstructured interviews to solicit more information on activities taking place and the reasoning behind certain actions. The results of the survey and observations are analysed and interpreted.
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  • Date Issued: 2011
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