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How do teachers characterise their teaching for conceptual understanding and procedural fluency?: a case study of two teachers

  • Authors: Junius, Daniel Franscius , Danie Junius
  • Date: 2013
  • Subjects: Mathematics -- Study and teaching (Secondary) -- Namibia Mathematics -- Study and teaching -- Case studies
  • Language: English
  • Type: text , Thesis , Masters , MEd
  • Identifier: vital:1360 , http://hdl.handle.net/10962/d1001426
  • Description: Over many years the practice or art of teaching Mathematics posed itself as, not only being different from the practice of teaching any other subject, but to have many challenges and opportunities that ask for exploration and understanding. Just after independence in 1990, Namibia has embarked upon a reform process for the entire education system. Many changes were brought about to create a uniform, equal system for all. However, many challenges still remain to be addressed. Mathematics education remains one of the key areas where Namibian teachers can contribute towards the improvement of the subject. Unsatisfactory results, under-qualified teachers, and a negative disposition towards Mathematics are some of the challenges. These challenges are not unique to Namibia. Across the globe psychologists, philosophers and educators continue to engage in debates and research projects in search of answers and solutions for the improvement of Mathematics education. Despite encountering numerous obstacles, many teachers are dedicated and achieve outstanding results with their learners. This thesis reports on a research project that focused on the Mathematics teaching practice of two teachers whose experiences can make a positive contribution to the improvement of Mathematics teaching in Namibia. Furthermore, this case study investigated and attempted to understand the Mathematics teaching practices of two proficient teachers who each claimed to have a specific and unique approach to teaching Mathematics. The one claimed to be mainly procedural in her Mathematics teaching, while the other one claimed to teach mainly in a conceptual manner. Both achieve very good results with their classes and attribute their own teaching orientations to a process of several experiences they went through as students and in their careers. The study revealed that both claims are substantiated and that each teacher was consistent in her claimed approach. Many challenges and constraints were encountered by both teachers, but in their unique and specific ways each teacher’s chosen teaching approach supported them to overcome these. It was evident from the findings that each teacher’s practice came about as an evolutionary process over an extended period of time. As many challenges and limitations are universal, it is believed that in sharing experiences, teachers can benefit from each other by improving their practice. It was clearly stated by both participants that the re-thinking of and reflecting on their own practices provided them with new insights and motivation. Peer support and sharing of practices contribute positively towards the improvement of the teachers’ classroom practices.
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  • Date Issued: 2013

An evaluation of the organizational communication of a performance management system in the city of Windhoek

  • Authors: Shilongo, Johannes Angula
  • Date: 2012
  • Subjects: Communication in organizations -- Namibia -- Windhoek Performance -- Management -- Namibia -- Windhoek Personnel management -- Namibia -- Windhoek Organizational change -- Namibia -- Windhoek Organizational behavior -- Namibia -- Windhoek
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:788 , http://hdl.handle.net/10962/d1003909
  • Description: This study evaluated how the communication of the new performance management system by the City of Windhoek influenced the beliefs of its employees and consequently to determine the effects of the communication process on the degree to which buy-in and readiness is created. Armenakis, Harris and Field's (1999) five element model of examining the change recipient's beliefs, namely, discrepancy, appropriateness, principal support, efficacy, and valence was used as a framework for this study. These beliefs play a major role in affecting behaviours of the change recipients (employees) toward the implementation of a new change initiative in an organisation. Discrepancy involves assessing if employees believe that a need for change does really exist in the organization. Appropriateness seeks to find out from the change recipients whether the performance management system being introduced in the organization is an appropriate reaction to the need and the vision of the organisation. Principal support describes the support from change agents and opinion leaders for the organizational change. Efficacy refers to a belief in one's capabilities to organize and execute the courses of action required to produce given attainments. Valence refers to the intrinsic and extrinsic attractiveness (from the change recipient's perspective) associated with the perceived outcome of the change. Literature on organizational change, organizational communication and change implementation were used, to gain and highlight insights regarding the role of change communication during change implementation, and to provide the conceptual framework for the research design and analysis. A single case study research method was used under a mixed research paradigm. The study used a survey questionnaire that was sent to 711 employees; a sufficient and representative 202 questionnaires were returned from all levels of the organization, yielding a response rate of 22.4%. In addition, three focus group interviews of a representative cross section of staff were conducted as also document analysis to collect data for the study. The summative average percentages of levels of agreements and disagreements of the respondents for each of the five change recipient's beliefs indicate a fairly high degree of agreement (buy-in) and considerably low degree of disagreement (resistance) among the respondents to nearly all five change recipient's beliefs. Discrepancy received the highest degree of agreement (buy-in) 84%; efficacy received 73%, appropriateness 66% and valence 59% whereas principal support scored the lowest degree of agreement of about 40% of the respondents. Despite the high degree of agreement (buy-in) for these elements, there was also a notable number of the respondents who neither agreed nor disagreed to some of the five change recipient's beliefs. In particular, principal support had 38%, valence had 28%, and appropriateness had 22% who neither agreed nor disagreed. The degree of disagreement (resistance) is relatively low in almost all five change recipient‟s beliefs except for principal support which indicated slightly higher levels of disagreement (19%). The results of the study indicate that the communication methods e.g., the road show, leaflets and brochures, discussions and training sessions used during the pre-implementation phase of the new performance management system influenced the change recipient‟s beliefs on the discrepancy for the new performance management system. The evidence is that these communication methods and actions helped to create a sense of urgency and the need to implement a new performance management system among employees. The new performance management system was also believed to be appropriate and its appropriateness was justified through the use of various communication methods which provided detailed explanations on how the new performance management system was different to the earlier performance appraisal system. Notwithstanding the belief in the appropriateness of the new performance management system, the study found that the absence of such a performance management system over a long period of time had cultivated a hidden but unifying shared set of values, beliefs and assumptions among employees that seem not to fit or be suitable to the demands of the new performance management system and the current challenges facing the organization. The employees themselves noted this discrepancy. Hence, they argued, there is a need to bring about new culture with new sets of values, beliefs and assumptions that will better suit and support the current demands facing the organisation and its members. The study found that although employees significantly believe that they have high levels of personal self-efficacy, the change message that was communicated to them did not in itself appear to help to create and further develop this employee self-efficacy. The change message mainly focussed on the need for training, and the design of job descriptions and technical aspects of the performance management system. The study revealed that the employees' belief in principal support of the new performance management system was that principal support was seen as less than sufficient or not as evident as they would have liked. Employees remarked that principal support was only conveyed during the initial stage of communication, thereafter, principal support from senior management was seen to have declined throughout the pre-implementation phase. Nonetheless, immediate supervisors and managers were believed to more supportive than senior management. The literature points to a lack of belief in principal support as an important cause of a loss momentum in change initiatives, which in turn may result in cynicism and greater resistance, especially by those who have vested interest in maintaining the status quo. Valence refers to the intrinsic and extrinsic attractiveness (from the change recipient's perspective) associated with the perceived outcome of the change. The results show that respondents have mixed beliefs about the personal benefits associated with the new performance management system. Thus, 63% of the respondents believe that it will benefit them, 75% believe that it will increase their self fulfilment, 68% believe that it will increase their feeling of accomplishment, 45% believe that their fringe benefit will remain the same after it is implemented, and 58% believe that they could earn high performance return. However, the result also shows that there are still many respondents who neither agree nor disagree to the presence of personal valance with regard to the new performance managements system. This study established that the use of various communication methods persuaded the majority of the City of Windhoek employees to view the new performance management system overall in a favourable light. However, interviewees criticised the communications process on the grounds that most of these methods were only used once and were not repeated, as they would have liked. Lessons on this item from other change studies are that when communicating new change initiatives, change agents should use different methods of communication and as many times as possible to influence the belief of employees. This report is structured as follows: Section 1 provides an abstract and introduction to the study. Section 1.2 presents a brief review of core theories and recent empirical studies relevant to the research problem. Section 1.3 provides a description of the research method followed in addressing aim and objectives of this study. Section 1.4 presents the results of the evaluation report and section 1.5 discusses the findings and make conclusive recommendations. Section 2 of this study complements subsection section 1.2 (in section 1) with a more detailed review of the literature on organizational change, organizational communication and change implementation. This more detailed review was conducted before the field work and write up of Section 1. The literature incorporated into Section 1 was distilled from this more detailed review. Similarly, Section 3 of this study complement subsection 1.3 (of section 1) with an extended description of the research design and research procedure followed in the study.
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  • Date Issued: 2012

An investigation into the journalistic identities of news workers at the state owned Lentsoe La Basotho/Lesotho Today Newspaper

  • Authors: Kotele, Mothepane
  • Date: 2010
  • Subjects: Lentsoe La Basotho/Lesotho Today Mass media -- Economic aspects -- Lesotho Mass media -- Social aspects -- Lesotho Mass media -- Employees Journalists -- Lesotho Sotho newspapers Journalistic ethics -- Lesotho
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3449 , http://hdl.handle.net/10962/d1002903
  • Description: Informed by the political economy framework and the public service role of media in democracy, the main objective of the study was to use in-depth semi-structured interviews to understand news-workers’ professional journalistic identities in relation to their status as government employees and the understanding of their public service role as outlined in the paper’s mission statement. The main interest was to understand the complexity of negotiating these role identities. Through reference to the theories of journalism professionalism, the study highlighted the extent to which news-workers in the small newsroom of Lentsoe la Basotho/Lesotho Today see themselves as public service journalists in a democratic country. The interest was borne partly out of the views of the paper’s critics who see it as not serving the public but rather promoting the activities and policies of the government of the day, thus falling short of its democratic role. The contention of the study was that as a public service newspaper, the paper should have news-workers who do impartial journalism and reflect the public’s right to know in their reporting. The findings of the study suggests that news-workers at Lentsoe la Basotho/Lesotho Today continuously have to strive to negotiate the potential conflict between being a professional and working for a government-controlled newspaper. While they sometimes lay claim to being journalists, the reality is that in their political coverage they end up adopting the role of government mouthpieces.
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  • Date Issued: 2010

Information and communication technology driven teaching and learning opportunities in support of environmental education processes: a case of the eno-environment online programme at Treverton Preparatory School, South Africa

  • Authors: Snow, Janet P
  • Date: 2008
  • Subjects: Treverton School (Natal, South Africa) , Environmental education -- South Africa -- Case studies , Sustainable development -- South Africa -- Case studies , Computer-assisted instruction -- South Africa -- Case studies , Education, Preschool -- Computer assisted instruction -- South Africa -- Case studies , Education, Preschool -- South Africa -- Case studies , Early childhood education -- South Africa -- Case studies , Educational technology -- South Africa -- Case studies , Ethnoscience -- Study and teaching -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1575 , http://hdl.handle.net/10962/d1003457 , Treverton School (Natal, South Africa) , Environmental education -- South Africa -- Case studies , Sustainable development -- South Africa -- Case studies , Computer-assisted instruction -- South Africa -- Case studies , Education, Preschool -- Computer assisted instruction -- South Africa -- Case studies , Education, Preschool -- South Africa -- Case studies , Early childhood education -- South Africa -- Case studies , Educational technology -- South Africa -- Case studies , Ethnoscience -- Study and teaching -- South Africa
  • Description: This research looks at a global virtual web-based programme for environmental awareness and education for sustainable development (ENO-Environment Online). It is a case study of Treverton Preparatory school in South Africa, one of several schools where the programme is implemented. One of the themes within the programme (“This is our culture”) is highlighted. A mixed method, interpretive case study methodology is used. Research methods include two focus group interviews with a selected group of learners, observations of four computer-based lessons and one practical session, document analysis of the three forms of learners’ submissions (‘blog’ site submission, presentation of material and ‘chat’ session), and two interviews conducted with the Treverton form teacher and ENO programme co-ordinator. The research views the Treverton ENO activities in relation to: academic rigour in Information and Communication Technology (ICT) use, the teacher’s role in ICT pedagogy, and active learning in ICT applications. As the theme is culturally based with a global perspective, the research also considers these activities from the perspectives of education for cultural knowledge (multicultural education) and in terms of mobilising indigenous knowledge and global education. These perspectives on the ENO activities are analysed in relation to dimensions of teaching and learning guidelines pertinent to Education for Sustainable Development in a southern African context. The research shows that the ENO theme supported a variety of learning contexts, a sense of community, modelling of behaviours and actions, debate, sharing of information and improved communication skills. Learners were exposed to cultural diversity, contradictory cultural values, cultural and global inclusivity. Knowledge of social cultural practices and indigenous knowledge was shared. Academic rigour in the ENO theme was noted with reflection being the predominant activity. Based on these key findings, recommendations to the ENO programme, schools and teachers have been made. These include: exploring possibilities for increasing focus on sustainable development actions, improving access to relevant information, encouraging critical debate and critical engagement with cultural diversity.
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  • Date Issued: 2008

Foucault, historicism and political philosophy

  • Authors: Allsobrook, Christopher John
  • Date: 2006
  • Subjects: Foucault, Michel, 1926-1984 Sartre, Jean Paul, 1905-1980 Political science -- Philosophy Power (Philosophy) Existential phenomenology Knowledge, Theory of History -- Philosophy Historicism
  • Language: English
  • Type: Thesis , Masters , MPhil
  • Identifier: vital:2726 , http://hdl.handle.net/10962/d1003073
  • Description: This thesis defends an ontological and epistemological account of Michel Foucault's post-structuralist philosophy, to argue that political philosophy needs to take into account the historical and political contingency of subjectivity and discourse. I show that by addressing the historical and political contingency of knowledge, Foucault's work overcomes the flaw of foundational epistemology in political philosophy, which treats true discourse as universal and disinterested. In doing so I hope to have to refuted the mainly positivistic and humanist schools of thought that lay claim to universal and foundationalist notions, by demonstrating the extent to which their misgivings about Foucault's work are informed by and founded upon an unjustified a-historicism. The thesis is composed of three chapters, the first of which deals with an ontology of the subject, the second, with an ontology of social relations, and the last with epistemology. In each chapter I use dialectical analysis to reveal how interests necessarily mediate subjectivity, social relations, and knowledge. The first two chapters defend Foucault's conception of power, by way of an analysis of the relations between Foucault's work and Sartre's existential phenomenology. I show how both Foucault and Sartre successfully address the problem of historicism for political philosophy with their respective conceptions of human freedom. The final chapter defends Foucault's conception of the relations between power and discourse, to show how it overcomes the a-historicism of universal, foundational epistemology. These three chapters demonstrate the importance of accounting for historicism in political philosophy. Claims to universal interest, because knowledge is conditioned by conflicts of interest, often mask political domination. It is important, then, to remember, in political philosophy, that knowledge is evaluative and interested, reflecting historically and politically mediated evaluations. One should be suspicious of ' natural facts' , used to justify actions or beliefs, thereby masking the choices that inform them. I have used the work of Michel Foucault to motivate this claim.
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  • Date Issued: 2006

An investigation of female leaders' perceptions of organisational culture and leadership in a Catholic High School

  • Authors: Jean-Louis, Lily-Claire Virginie
  • Date: 2005
  • Subjects: Catholic schools -- South Africa -- Administration School management and organization -- South Africa Educational leadership -- South Africa Corporate culture -- South Africa Women school administrators -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1625 , http://hdl.handle.net/10962/d1003507
  • Description: For the past thirty years, leadership theories have focused on the importance of the individual within the school organisation. The shared assumptions and beliefs of the individuals working in the same organisation shape the school’s organisational culture, and organisational culture is a salient factor which should be considered when understanding educational leadership. The focus of my study is to explore the relationship between organisational culture and leadership. In the same context, new approaches to the study of leadership have explored the issue of gender in leadership. Female leadership studies - the second focus of this study - seek not only to restore the place of the individual but also argue a place for women in educational leadership. Based in the interpretive paradigm, this is a case study of a Catholic all-girl secondary school called the Loreto Convent School of Pretoria. Historically, the Loreto schools have aimed at promoting and empowering girls’ education and female leadership. It was therefore an appropriate site in which to explore organisational culture and its relationship with leadership, particularly female leadership. I purposefully chose three of the school’s female leaders - the school’s principal, the High school Head of Department and the High school head girl - focusing on their perceptions and experiences of their leadership and the school’s culture. My research findings show that an understanding of the relationship between organisational culture and leadership cannot be complete without acknowledging the importance of the leader as an individual, with his/her personal background and values, taking into account gender as well as the multiple roles that the individual has in society. Furthermore, the ‘humane’ characteristic of educational leadership leads to an understanding that the leader is often confronted with conflicting situations where he/she is caught between personal/organisational values and the need to achieve the task. Finally, my findings show that contemporary leaders are now called upon to work and participate in the promotion of social justice in order to fight against society’s socio-economic inequality and improve the quality of education and life.
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  • Date Issued: 2005

The Grameen Bank model of microcredit and its relevance for South Africa

  • Authors: Akpan, Iniobong Wilson
  • Date: 2005
  • Subjects: Grameen Bank , Microfinance -- South Africa , Microfinance -- Bangladesh , Credit -- Management , Risk management , Poor -- Finance, Personal , South Africa -- Economic conditions , Bangladesh -- Economic conditions
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:980 , http://hdl.handle.net/10962/d1002714 , Grameen Bank , Microfinance -- South Africa , Microfinance -- Bangladesh , Credit -- Management , Risk management , Poor -- Finance, Personal , South Africa -- Economic conditions , Bangladesh -- Economic conditions
  • Description: Among the reasons for financial exclusion is the fact that the poor, being largely illiterate and unemployed, are traditionally perceived as ‘bad credit risks’. This is the dominant perception of the poor in the formal credit markets – a perception that also exists in the microcredit sector. In other words, while information asymmetry is a recognized problem in lender-borrower relationships, lenders consider the problem particularly severe when they contemplate doing business with the poor. A contrasting paradigm, such as the one adopted by Grameen Bank of Bangladesh, views the poor as possessing economic potentials that have not been tapped – that is, as ‘good credit risks’. Grameen Bank’s microcredit features appear to have successfully mitigated the problems of information asymmetry and, to a large extent, made it possible for the poor to access microenterprise credit. Using the Grameen Bank model as a benchmark, this study examined the lending features of private sector microlenders in South Africa and those of KhulaStart (credit) scheme. The aim was to identify how the lending features affect microenterprise credit access. Primary data were obtained through interviews, while relevant secondary data were also used in the study. A key finding of the study was that while the Khulastart scheme was, like Grameencredit, targeted at the poor, the method of its delivery appeared diluted or unduly influenced by the conventional (private sector) paradigm that pre-classifies people as ‘good’ or ‘bad’ credit risks. As a result, the scheme was not robust enough to support microenterprise credit access. This has consequences for job-creation and poverty reduction. Based on the findings, the study maintains that a realistic broadening of microenterprise credit access will not occur unless there is a fundamental paradigm shift in microcredit practices, and unless measures designed to mitigate information asymmetries are sensitive to the historical, economic and sociocultural realities of the South African poor.
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  • Date Issued: 2005

The relationship between leadership and internal customer satisfaction within a motor manufacturing company in Gauteng

  • Authors: Samuel, Glen
  • Date: 2005
  • Subjects: Automobile industry and trade -- Employees -- South Africa -- Gauteng Automobile industry and trade -- Customer services -- South Africa -- Gauteng Job satisfaction Customer services -- Management Industrial relations -- South Africa -- Gauteng Employee morale Personnel management
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:758 , http://hdl.handle.net/10962/d1003879
  • Description: This research investigates the relationship between leadership and internal customer satisfaction, also called employee satisfaction in this document. The research is conducted within an automotive manufacturer situated in the province of Gauteng, South Africa. The Service Profit Chain forms the foundation on which this research is based as it suggests that the various factors within the service delivery system of an organisation ultimately affect the success of an organisation. From the Service Profit Chain, it is established that a factor that affects employee satisfaction is the leadership within the organisation. The Full Range Leadership Development Theory provides the backbone for analysing the leadership style of each manager by using the Multifactor Leadership Questionnaire. The company’s employee satisfaction model provides the theoretical construct against which the employee satisfaction of the managers’ subordinates is measured using the company’s employee satisfaction questionnaire. Information was gathered from the managers who rated their leadership styles as they perceived it; and from their respective subordinates who rated the managers’ leadership style as they perceived it and also their satisfaction as employees as they perceived it. Data obtained from each instrument, for the respective managers, was then statistically analysed. The reliability of the data could not be proved for some of the factors of the 2 research instruments. However, this research found a statistically significant relationship between transformational leadership and some factors of employee satisfaction, albeit a weak relationship. The null hypothesis was rejected and the alternate hypothesis accepted. A statistically significant relationship exists between leadership style and employee satisfaction levels within an automotive manufacturing organisation.
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  • Date Issued: 2005

Research portfolio

A critical investigation of managing the standards development process for the life insurance industry in Namibia

  • Authors: Kaimu, Himeesora Irene
  • Date: 2003
  • Subjects: Life insurance -- Management -- Namibia Insurance -- Namibia
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1481 , http://hdl.handle.net/10962/d1003362
  • Description: The development of standards for education and training is regarded as a very important activity by many countries. Any country that sets standards for education and training is trying to define its training system and avoid duplication of training by providers who do not see eye to eye. National standards are public documents accessible to anyone interested in education and training. Namibia introduced standards setting as a core activity of administering the National Qualifications Framework in 1996 after the passing of the Namibia Qualifications Act by parliament. This research attempts to gain an understanding of how the process of developing standards for the Life Assurance Sector in Namibia was managed by focusing on the experiences of three persons who took part in the process of developing the said standards. The case study approach enabled me to gain considerable insight into management issues that may have influenced the process of developing these specific standards. The findings illuminate the management and leadership issues which characterised the process for the LA Industry. Several management issues emerge as key elements in the process. These include: A strong emphasis on transformational leadership through clear vision crafting; empowerment through emancipatory thinking; OD features such as problem solving and effective communication; the importance of organisational structure; the concept of a learning organisation and benchmarking as well as collegiality. This research explores the relationship between management thinking generally, and the management of the standards development process in particular.
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  • Date Issued: 2003

The effects of criminalising publication offences on the freedom of the press in Uganda, 1986-2000

  • Authors: Mbaine, Emmanuel Adolf
  • Date: 2003
  • Subjects: Freedom of the press -- Uganda , Press and politics -- Uganda , Mass media -- Political aspects -- Uganda , Political participation -- Uganda , Democracy -- Uganda
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3462 , http://hdl.handle.net/10962/d1002917 , Freedom of the press -- Uganda , Press and politics -- Uganda , Mass media -- Political aspects -- Uganda , Political participation -- Uganda , Democracy -- Uganda
  • Description: The press in Uganda has come a long way right from the colonial days when newspapers sprang up, mainly from missionary activity, through the eras of Obote 1 (1962 – 1971), Idi Amin (1971 – 1979), Obote 11 (1980 – 1985), Tito Okello (1985 – 1986) and the Museveni administration (1986 – to date). For most of this time, the press in Uganda enjoyed very little or no freedom to do its work. The year 1986 saw the ascendancy to power of the Yoweri Museveni as president after a five-year bush war with promised to restore peace, democracy, the rule of law, economic prosperity and civic rights and freedoms. Several achievements in these areas have been registered since 1986. Newspapers have sprouted and the broadcast industry liberalised to allow private ownership that has seen the proliferation of FM stations. However, the relations between the government and the press remain strained with journalists arrested and/or prosecuted mainly for offences relating to sedition, publication of false news and criminal libel. This study was intended to examine why journalists in Uganda continue to suffer arrests and incarceration when the country has been reported to be moving towards democratisation. The study was also aimed at assessing the impact of arresting journalists and arraigning them before the courts of law in the period under study and what this portends for freedom of the press and democratisation. It is recommended, among others, that journalists in Uganda need more unity of purpose to pursue meaningful media law reform that will de-criminalise publication wrongs. The civil remedies available to people who feel offended by the press are sufficient, if not excessive. The efforts already undertaken by the Eastern Africa Media Institute (EAMI) Uganda Chapter in this direction should be pursued to a logical conclusion.
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  • Date Issued: 2003

The identification of operations strategies based on business principles that will enhance the public sector's ability to retain its client departments

  • Authors: Davids, Shahied
  • Date: 2001
  • Subjects: Eastern Cape (South Africa) -- Public Works Department , Customer services
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:10941 , http://hdl.handle.net/10948/d1006192 , Eastern Cape (South Africa) -- Public Works Department , Customer services
  • Description: The research problem addressed in this study was to identify operational strategies that will enhance the ability of National Public Works Department (NPWD) of the Eastern Cape to retain its Client Departments. Privatisation has lead to performance management becoming essential to satisfy the client departments needs and requirements. In order to identify operational strategies which will enhance NPWD’s operation’s performance, questionnaires with relevant operation questions were used as well as a brain-writing session. The findings of the literature survey clearly highlight the specific areas where attention is required for improvements.
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  • Date Issued: 2001

Identity and transformation within the Playhouse Dance Company, 1993-1997

  • Authors: Ballantyne, Tammy Marguerite
  • Date: 1998
  • Subjects: Playhouse dance company , Dance -- South Africa
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2131 , http://hdl.handle.net/10962/d1002363 , Playhouse dance company , Dance -- South Africa
  • Description: This thesis examines the principles and policies underlying the need for transformation within the Playhouse Dance Company (PDC) in Durban and the actualities of implementing these visions and procedures. It is proposed that artistic structures, ideals and processes cannot remain impervious to the climate of change. Alterations in the political arena demand radical permutations within arts councils and their concept of repertoire, educational programmes and training. Transformation is linked to the problem of identity and it is suggested that the company is in the midst of a journey towards "becoming" rather than "being". Chapter One comprises an overview of changing trends in the arts globally and the impact on South Mrican art forms and processes. There is also an examination of the past, the establishment of arts councils and the colonial heritage of the dance companies within these councils. The formative years of the NAP AC Dance Company and the strategies formulated by former artistic directors have, it is suggested, hampered the transformation process. Chapter Two focuses on the PDC's endeavours to transform between the years 1993 and 1997. Lack of funding, conservative public tastes and training processes are. all' issues confronting management, choreographers, educators and performers in attempting to provide a clear direction towards transformation. The company walk a tightrope as they struggle to balance the heritage of their artistic past while giving birth to a new heritage for the future. Chapter Three discusses two areas that reveal measurable attempts at transformation. Hawkins offers re-inventions of the classics which encourages innovation, and Siwela Sonke was conceived to draw on dance forms located in Kwazulu-Natal in the search for a South Mrican dance aesthetic. Chapter Four investigates whether transformative visions are becoming a reality and suggests how the company could extend the process further. This chapter concludes with .. ideas about the nature of culture and how this informs,the exercise of transformation. This thesis proposes that transformation within the PDC is occurring even though it has its shortcomings. The main thrust of the research is to investigate, identifY and document factors that are contributing to current dance trends in Durban.
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  • Date Issued: 1998

A strategy for promoting the use of computers across the curriculum at primary school level: a case study

  • Authors: Heukelman, Delene
  • Date: 1994
  • Subjects: Education, Elementary -- Computer programs Computers and children Education, Elementary -- Data processing Computer-assisted instruction
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1774 , http://hdl.handle.net/10962/d1003659
  • Description: A growing number of primary schools are acquiring computers, mainly through parent funding. The study concerns the promotion of computer use across the curriculum in primary schools. Teachers need to be trained in the use of computers as a teaching aid in different subjects. A study comparing two periods of training was undertaken. Two model C primary schools, administered by the Department of Education and Culture, with similar profiles of educational computer use, were selected for the purpose. A training course consisting of five sections, where the use of the word processor, spreadsheet and database, both as personal tools and as teaching aids were introduced, was offered. Care was taken to select topics from current syllabi and to demonstrate how these topics could be presented and enhanced by using the computer. The training was presented at school A over a period of 8 months and at school B over a period of 5 weeks. The supporting material and contents of the course were the same for both groups. A comparison between the effectiveness of the two training regimes was made. The researcher's initial perceptions of the teachers' initial low level of computer literacy were confirmed by a questionnaire, responded to by each participant. It would seem that the shorter raining period was more effective in raising the level of computer literacy and that if the training period was longer, the contact time should be increased to maintain support. Neither training period resulted in a significant increase in computer use, either as a personal tool or as a teaching aid. The failure to do so may be ascribed to a number of influences, one of which is the teaching style of individual teachers. Changing the teaching style of an experienced teacher takes time and more effort than was available for either training period.
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  • Date Issued: 1994

Effects of an enriched physical activity programme on selected anthropometric, physiological and performance characteristics of an underprivilieged ethnic group

  • Authors: Van Rooyen, Frederick
  • Date: 1994
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:21115 , http://hdl.handle.net/10962/6455
  • Description: Fifty pre-pubescent Xhosa-speaking children from two primary schools within the township of Rini, Grahamstown, were selected in this study to determine the effects, if any, of an enriched physical activity programme. Subjects were divided into experimental and control groups with only the experimental group physically participating in the enrichment programme. Selected anthropometric, physiological and motor performance tests were administered on both groups, before and after the programme, to monitor the effect of the enrichment programme on growth, cardiovascular efficiency and physical performance. Somatotype ratings showed no change after the training programme. However body composition showed greater gains in fat mass in the control group and marked drops in fat mass and increases in lean body mass in the experimental group. Longer running distances, higher predicted VO2 max mean values and improved recovery heart rate (HR) as well as larger gains in relative power, absolute power and velocity were experienced by individuals who participated in the training programme. The performance of the experimental group in the two motor performance tests out-weighed by far the performance of the control group as a result of the additional programme. The enrichment programme not only produced a positive effect on body composition but also improved aerobic and anaerobic efficiency. Improvements in both motor performance tests favoured the experimental group.
  • Full Text:
  • Date Issued: 1994

A possible mechanism for enzymic depilation of skins

  • Authors: Brady, Dean
  • Date: 1989
  • Subjects: Chemistry, Technical , Tanning
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:3877 , http://hdl.handle.net/10962/d1001611
  • Description: Streptomyces fradiae is a bacterium which has been previously found to produce extracellular enzymes which are capable of wool degradation and skin depilation. Streptomyces fradiae 3739 and other strains of Streptomyces were found in this study to be able to degrade a keratin source (wool) to a considerable degree. However according to the evidence of SEM micrographs presented here the highly keratinised spindle cells of the paracortex are fairly resistant to protease attack, and it is the cementation material which binds these cells together which is initially degraded by the proteases. A large degree of correlation was found with the strains of Streptomyces studied, between the ability of the individual strains to degrade wool and the ability of their extracellular proteases to reduce the depilation load of sheepskins. With further analysis S. fradiae 3739 was found to produce at least one amylase and four or more proteases. The proteases as a group had maximal proteolytic activity in the 8.0-9.0 pH unit range, and were considerably thermostabilised by the inclusion of calcium ions into the reaction solution. The protease group was found to cause depilation of merino sheepskins. For comparative purposes a protease produced by a strain of Proteus vulgaris isolated from a staling hide with hair slip (natural depilation) was studied. The protease activity was maximal in the alkaline region between 8.0-9.0 pH units. Tbe protease appeared to be a single enzyme with a molecular mass of approximately 44 000 daltons. The protease was maximally active at 40°C, although it was only thermostable to 30°C. The enzyme was ineffectual as a depilant except when the skin was pre-treated with a strong alkali, preferably including sodium sulphite in the protease preparation. One of the most important differences between the extracellular proteases of S. fradiae and P. vulgaris was that the former were greater in variety and caused a greater decrease in the depilation load of sheepskins than the latter. Further research with mixtures of commercial proteases provided evidence that a synergistic depilatory effect occurs when proteases of complementary bond specificities are used in conjunction in enzymic depilatory preparations. Some form of strong alkali treatment of skins was found to be necessary to produce leather of the prerequisite quality when the skin was depilated by proteases, otherwise the skin was found to be depleted and stiff. Calcium hydroxide alone was found to be inadequate for this task, probably owing to the fact that it is less alkaline than the lime-sulphide mixture. The calcium hydroxide (lime) must therefore be used in conjunction with sodium hydroxide (which makes the solution as alkaline as that of the lime-sulphide solution) to produce leather comparable to that produced by the lime sulphide treatment. A combination of the information provided by the present research and that gleaned from the relevent literature allows for the construction of a model to represent the possible mechanism of enzymic depilation of skins, in which depilation is caused by the disruption of the basement membrane at the dermal-epidermal junction by the degradation of its constituent molecular components by general proteases, resulting in the removal of the epidermis and its associated wool or hair
  • Full Text:
  • Date Issued: 1989

Cleavage of the precursor coat protein of black beetle virus strain w17 in rabbit reticulocyte lysate

  • Authors: Blackhurst, Diane Mary
  • Date: 1988
  • Subjects: Beetles , Insects -- Viruses
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:3880 , http://hdl.handle.net/10962/d1001614
  • Description: Black beetle virus (BBV) is a bipartite single-stranded RNA virus belonging to the family Nodaviridae. Its host range has been found to be limited to insects. RNA 1, the larger of the two RNA molecules, with a MW of 1,15 x 10⁶ and the smaller RNA 2 with a MW of 0,46 x 10⁶, are both packaged in the same virus particle. The two RNA molecules are translated separately, with RNA 1 coding for protein A of MW 105 x 10³ and RNA 2 coding for protein α of MW 47 x 10³. Protein α is the major capsid protein precursor, which during in vivo maturation is cleaved to form the coat protein β of MW 43 x 10³, and protein γ of MW 5 x 10³. Cell-free translation of BBV (strain W17) mRNA was carried out in rabbit reticulocyte lysates. Protein α was detectable between 0 and 30 minutes after RNA addition. A protein 'β', which was found to co-electrophorese on polyacrylamide gels with authentic β and which was immunoprecipitated by anti-BBV antiserum, was detectable after 30 minutes. Results of this work show that the formation of 'β' could be prevented by the addition of RNase to the lysate, indicating that intact RNA is necessary for α to β cleavage. Arresting protein synthesis by the addition of cycloheximide to the lysate mix did not inhibit the cleavage. The formation of β could also be prevented by cooling the lysate mix to 1°C. Cleavage of α to β still occurred when RNA 2, without the presence of RNA 1, was translated. Therefore the cleavage is not dependent on a translation product of RNA 1. Sedimentation of lysate on sucrose density gradients showed that α to β cleavage was not accompanied by assembly of BBV RNA and protein lnto a viral substructure as has been shown to occur with some viruses, for example certain picornaviruses. Serial dilution of lysate containing α showed that the level of β decreased with increasing dilution, indicating that the cleavage is not mediated by autocatalysis, but by some other unknown factor. Although much work has been carried out on black beetle virus, no work has been published to date concerning α to β cleavage as an indication of assembly in rabbit reticulocyte lysates. Results of these cell-free translation experiments thus indicate that BBV coat protein precursor α, in association with its messenger RNA 2, undergoes a maturation cleavage in the lysate to produce BBV coat protein β. In addition, this cleavage seems to occur without assembly into any intermediate viral structure
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  • Date Issued: 1988

The study of hydroxyoximes and hydroxamic acids supported on macroporous resins and their use in the rapid seperation of metals

  • Authors: Hemmes, Marlene
  • Date: 1979
  • Subjects: Chromatographic analysis , Separation (Technology) , Metal ions , Solvent extraction , Extraction (Chemistry) , Oximes , Metals -- Analysis
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4453 , http://hdl.handle.net/10962/d1009512
  • Description: Introduction: The macroporous Amberlite XAD resins were coated with LIX-64N and examined for the rate of uptake of copper . XAD-7 was by far the best support and gave a satisfactory rate of uptake up to loadings of 60% (w/w). The specific surface area of XAD-7 was measured by the adsorption of methylene blue from aqueous solution. The area of the wetted resin was five times less than that of the dry resin. LIX-65N was purified and the anti isomer characterised using spectroscopic techniques . The rate of uptake of copper was not improved by use of purified LIX-65N or by addition of LIX-63. XAD-7 coated with LIX-65N was used in columns. Elution curves for copper showed negligible tailing, and rapid separations of copper from iron (111), nickel, cobalt and magnesium by selective absorption were achieved. Copper was concentrated from very dilute solution at a flow rate of 50 ml min -1 ,and a 99% recovery was obtained. The method was applied to the rapid determination of copper in brass and bronze. A series of long-chain hydroxamic acids were synthesised and tested for suitability as stationary phase on XAD-7. Oleohydroxamic acid and naphthenohydroxamic acid were the most promising. The r ate of uptake of copper was reduced by the use of nonylphenol or amyl alcohol as a diluent. The capacities for copper of the hydroxamic acids were less when supported on XAD-7 than when used as liquid ionexchangers. The distribution coefficients of cobalt, nickel, zinc, lead, vanadium, uranium, iron (111) and copper were measured as a function of pH. XAD-7 coated with oleohydroxamic acid was used in columns for the rapid separation of iron (111) from copper and of copper from nickel, cobalt, lead and zinc. Copper was concentrated from very dilute solution at a flow rate of 45 ml min -1 and a 100,8% recovery was obtained. Copper was successfully separated from nickel by selective elution. The elution curves obtained show negligible tailing. The resin loaded with oleohydroxamic acid lost capacity due to chemical instability. Naphthenohydroxamic acid supported on XAD-7 was not suitable for use in columns, because it was physically unstable.
  • Full Text:
  • Date Issued: 1979

The development of a morphometric model for the estimation of mean annual sediment yield in ungauged catchments of South African river systems

  • Authors: Roberts, Peter J T
  • Date: 1975
  • Subjects: Sedimentation and deposition -- South Africa -- Mathematical models
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4876 , http://hdl.handle.net/10962/d1013062
  • Description: Hydrologists are regularly faced with the unenviable task of having to predict the magnitude and frequency of phenomena such as floods and droughts; and rates of erosion. If long records are available for analysis the hydrologist is able to base his predictions on the premise that the pattern of variation that has been observed in the past will persist in the future. The confidence that can be placed in any estimate consequently depends to a large extent on the length of time over which the phenomena have been measured at the problem site. Unfortunately the availability of adequate records tends to be the exception rather than the rule and in areas where there is inadequate data, it is necessary to resort to the hazardous procedure of transferring information from the gauged to the ungauged catchments. The transfer of information is accomplished by using empirical methods based on regionalised parameters, but the uncertainties involved together with the economic implications that could arise from a poor estimate, prompt the hydrologist to use as many methods as possible. The need for empirical methods of estimating mean annual sediment yield in ungauged catchments was first appreciated by the author when he was involved in the estimation of design floods and sediment accumulation at sites for proposed reservoirs. Empirical methods of estimating sediment yield are frequently used in an engineering context, but little attention has been given to the catchment surface from which the sediment supply is derived. It is perhaps in this often neglected field of research that the physical geographer can make a contribution. The principal aim of the thesis, more fully discussed in Chapter I, was the development of a morphometric model which could be used to estimate mean annual sediment yield in ungauged catchments in South Africa. The data used in the development of the model were drawn from the catchments, described in Appendix A, that cover a wide range of climate and topography. A description of the approaches adopted by other researchers for the development of empirical models of estimating sediment yield which forms the background to the model has been included as Appendix B. The model was first developed in an elementary form as the focus of a research project which was documented in the form of three reports of research in progress (Roberts, 1973 a, b and c). Analysis of the pattern of variation of suspended sediment yield provided a better understanding of factors affecting sediment yield and supported the selection of the prediction variable (Horton's P ratio) which was used in the model. The concepts of network topology were utilised to gain insight into the environmental factors controlling both the P ratio and sediment yield. Reasons for the high correlation between the P ratio and sediment yield are suggested but it is felt that further research should be focused on this aspect. In order not to break the continuity and development of the steps taken in the derivation of the model details of the calculations are collected in Appendices C, D and E. While many of the figures and tables presented in the thesis appeared in technical notes prepared entirely by the author for the Department of Water Affairs, the views expressed in the thesis do not in any way, either explicitly or by implication, represent any official view or policy of the Department of Water Affairs.
  • Full Text:
  • Date Issued: 1975

Martin Luther's attack on monasticism

  • Authors: Enslin, Donovan Bryan
  • Date: 1974
  • Subjects: Luther, Martin, 1483-1546 -- Influence Luther, Martin, 1483-1546 -- Criticism and interpretation Monastic and religious life -- History Monasticism and religious order Monasteries
  • Language: English
  • Type: Thesis , Bachelor , BDiv
  • Identifier: vital:1251 , http://hdl.handle.net/10962/d1011766
  • Description: No comprehensive study of Luther's attitude towards monasticism is available in English. Most of the English works on Luther devote only a few pages or part of a chapter to this aspect of his life. Two reasons account for the cursory treatment. First, concern with the great themes of Luther's theology has led (Protestants at least) to concentrate on the theological aspects of his critique monasticism as a denial of the free grace of God, and as involving a mistaken view of perfection. Pelikan has commented: "Valid though this concentration on the theological aspects of Luther's polemic against monasticism is, it may obscure the bearing of that polemic upon the structures of the church." Moreover, a concern for theology 'pure and simple': (if such is possible) has led to a tendency to arrive at Luther's view of monasticism by a process of deduction from his great theme of justification by grace through faith alone, so that many of the niceties of his position, and especially the gentleness of his approach, have been obscured. Second, the cursory treatment is possible because there is a real sense in which the arguments Luther adduced in his major work on monasticism - though comprehensive and systematic - were by no means original. Yet, The Judgement of Martin Luther on Monastic Vows was the most decisive critique of monasticism ever presented. Summary, p. 2-3.
  • Full Text:
  • Date Issued: 1974
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