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Inter-level health service referral of women in labour

  • Authors: Jantjes, Louisa
  • Date: 2008
  • Subjects: Childbirth -- South Africa , Medical referrals -- South Africa , Midwives -- South Africa , Labor (Obstetrics) -- Complications
  • Language: English
  • Type: Thesis , Doctoral , DCur
  • Identifier: vital:10010 , http://hdl.handle.net/10948/986 , Childbirth -- South Africa , Medical referrals -- South Africa , Midwives -- South Africa , Labor (Obstetrics) -- Complications
  • Description: Although it is considered an everyday occurrence, childbirth is nonetheless an important and dramatic experience in the life of every woman. Childbirth, a normal physiological state in the life of a woman, can be an awe-inspiring and exciting experience, but sometimes disconcerting experiences may also occur. Women sometimes see labour as the end to a long drawn out process following pregnancy and therefore attribute great significance to all occurrences during labour. When complications occur in a usually uncomplicated process of labour, the health care provider must be able to make quick and effective management decisions and implement appropriate interventions. This may include the referral of women in labour to a level of care where complications can be dealt with more effectively, thereby ensuring the best maternal and neonatal outcomes. Patient referral is regarded as a fundamental component of the health care system therefore a well functioning system should ensure that patients are treated in the appropriate manner at the appropriate place at the lowest possible cost to the health system. The goal of this research study was to explore and describe the inter-level health service referral of women in labour by midwives, in order to design guidelines for midwives and other relevant health care providers involved in inter-level health service referral of women in labour in the South African public health care sector. The research design used for this study is a combination of qualitative and quantitative approaches. The paradigmatic perspective of this study was based on the World Health Organization’s Health for All Model. Appropriate data collection and analysis strategies were used for the different stages of the study. Data collection commenced only after permission to conduct the research had been obtained from relevant authorities and University of Port Elizabeth and the Nelson Mandela Metropolitan University structures. Informed consent was obtained from participants included in the study. In stage 1 of this research project, a profile of midwives at lower level maternity care centres was compiled and the perceptions and experiences of midwives working at lower level maternity services, who are responsible for inter-level health referrals of women in labour, were described. Stage 2 described, by means of analysis of maternity case records, aspects of the inter-level referral of women in labour including the profiles of women admitted to midwife obstetric units (MOUs) who are v referred to higher levels of care. Of significance in this study is the appropriateness of midwifery referrals and the maternity care implemented by health care providers during inter-level health service referral of women in labour. In stage 3 clinical guidelines for midwives and other relevant maternity care providers, to assist them in the inter-level health service referral of women in labour, were developed. Findings from stage 1 of this research study revealed that midwives were generally well qualified and sufficiently experienced in the management of women in labour who need referral. Disconcerting findings relating to human and material resource shortages were discovered; these included major problems with patient transportation and difficulties with communication relating to inter-level health service referral of women. These shortages adversely affected midwives’ ability to efficiently care for women during the inter-level health service referral of women in labour in the research area. Stage 2 of the study yielded results of questionable standards of care to women and infants included in the study. A further disturbing finding from the study is the poor state of record keeping. The development of the provisional guidelines in stage 3 of the study was informed by the four main themes identified from the research findings. Before embarking on guideline development, the researcher familiarized herself with theory related to the clinical guidelines. These included clarifying the concept ‘clinical guidelines’, justifying the need for developing clinical guidelines as well as giving consideration to concerns about clinical guidelines. The research findings as well as literature related to these findings informed the researcher on the development of the guidelines. Provisional guidelines were therefore developed on responsibilities of role players in inter-level health service referral of women in labour at first level of referral, namely the midwife obstetric units, transport personnel and maternity care providers at the referral hospital. Steps were taken throughout the study to adhere to ethical standards of research. The researcher will ensure that the research report is available to all health authorities involved, the participants included in the study and the health care providers who may benefit from the research findings.
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  • Date Issued: 2008

Interaction between arbuscular mycorrhizal fungi and soil microbial populations in the rhizosphere

  • Authors: Ike-Izundu, Nnenna Esther
  • Date: 2008
  • Subjects: Mycorrhizas , Mycorrhizal fungi , Vesicular-arbuscular mycorrhizas , Soil microbiology , Rhizosphere , Revegetation , Restoration ecology
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:3962 , http://hdl.handle.net/10962/d1004021 , Mycorrhizas , Mycorrhizal fungi , Vesicular-arbuscular mycorrhizas , Soil microbiology , Rhizosphere , Revegetation , Restoration ecology
  • Description: This study examined the rehabilitation potential of AM fungi with organic and inorganic fertilisers under pot and field trial conditions as well as their interaction with rhizospheric organisms and specific functional groups. In addition, the study highlighted the effects of land-use management on AM fungal populations in soil and the mycorrhizal status of some selected plants from one of the study sites. The study focussed on two sites that differ in operational activities and these included a mined area that was to be rehabilitated and a commercial farming site. A pot trial was conducted using an overburdened soil resulting from kaolin clay mining. Pots were seeded with Cynodon dactylon and treated with either Organic Tea or NPK (3:1:5) fertiliser, with or without AM fungal inoculum. The compatibility of these fertilisers with AM fungi was assessed by plant growth and percentage root colonisation. Maximum shoot height and plant biomass were observed at the 28th week with NPK (3:1:5) fertiliser supporting mycorrhizal colonisation by 80%. The result indicated the potential of AM fungi to be used in rehabilitation with minimal phosphate fertiliser. Similarly, a field trial was set-up using 17 x 17 m[superscript 2] plots in the mining site that were treated with the same organic and inorganic fertilisers as well as with AM fungal inoculum in different combinations. The interaction between AM fungi and soil microbial population was determined using culture dependent and culture independent techniques. The culture dependent technique involved the use of soil dilution and plating on general purpose and selective media. The result showed that there was no change in the total culturable bacterial number in the untreated and AM fungal treated plots, while a change in species composition was observed in the functional groups. Different functional groups identified included nitrogen fixing bacteria, pseudomonads, actinomycetes, phosphate solubilisers and the fungal counterparts. Gram-positive bacteria were observed as the predominant phenotypic type, while nitrogen fixers and actinomycetes were the predominant functional groups. Species identified from each functional group were Pseudomonas fulva, Bacillus megaterium, Streptomyces and actinomycetales bacteria. Meanwhile, fungi such as Ampelomyces, Fusarium, Penicillium, Aspergillus, Cephalosporium and Exserohilium were identified morphologically and molecularly. Furthermore, the mining site had a significantly higher bacterial number than the farming site thereby indicating the effects of land-use management on culturable bacterial numbers. The culture independent technique was carried out by cloning of the bacterial 16S rDNA and sequencing. Identified clones were Bradyrhizobium, Propionibacterium and Sporichthya. A cladogram constructed with the nucleotides sequences of identified functional species, clones and closely related nucleotide sequences from the Genbank indicated that nucleotide sequences differed in terms of the method used. The activity and establishment of the introduced AM fungal population was determined by spore enumeration, infectivity assay, percentage root colonisation and assessment of glomalin concentrations. The results indicated that the two land use types affected AM fungal populations. However, the establishment of AM fungi in the farming site was more successful than in the mining site as indicated by the higher infectivity pontential. Selected host plants, which were collected around the mine area, were observed to be mainly colonised by AM fungi and these were identified as Pentzia incana, Elytropappus rhinocerotis, Euphorbia meloformis, Selago corymbosa, Albuca canadensis and Helichrysum rosum. These plant species were able to thrive under harsh environmental conditions, thereby indicating their potential use as rehabilitation host plants. Generally, the findings of this study has provided an insight into the interaction between arbuscular mycorrhizal fungi and other soil microorganisms in two fields with differing land use management practices.
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  • Date Issued: 2008

Interaction of water-soluble thiol capped CdTe quantum dots and bovine serum albumin

  • Authors: Idowu, Mopelola , Lamprecht, Emmanuel , Nyokong, Tebello
  • Date: 2008
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/265974 , vital:53906 , xlink:href="https://doi.org/10.1016/j.jphotochem.2008.02.008"
  • Description: Luminescent water-soluble CdTe quantum dots (QDs) capped with different thiol carboxylic acids were synthesized in aqueous medium and then cross linked to bovine serum albumin (BSA) with 1-ethyl3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC). Enhancement of fluorescence emission intensity occurred for QDs in the presence of bovine serum albumin (BSA, mixed or linked) signifying inhibition of non-radiative recombination of the surface vacancies. Fluorescence studies reveal a positive deviation behaviour suggesting the occurrence of static and dynamic mechanisms of quenching together which was accounted for by the modified Stern–Volmer equation.
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  • Date Issued: 2008

Interest rate risk management : a case study of GBS Mutual Bank

  • Authors: Williamson, Gareth Alan
  • Date: 2008
  • Subjects: GBS Mutual Bank , Interest rates -- Case studies , Interest rate risk -- Case studies , Risk management -- Case studies , Financial risk -- Case studies , Banks and banking -- Case studies
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:986 , http://hdl.handle.net/10962/d1002720 , GBS Mutual Bank , Interest rates -- Case studies , Interest rate risk -- Case studies , Risk management -- Case studies , Financial risk -- Case studies , Banks and banking -- Case studies
  • Description: Banks play a pivotal role in the economic growth and development of countries, primarily through the diversification of risk for both themselves and other economic agents. Interest rate risk is regarded as one of the most prominent financial risks faced by a bank. A large portion of private banks’ revenue stems from net interest income that is generated from the difference between various assets and liabilities that are held on the balance sheet. Fluctuations in the interest rate can alter a bank’s interest income and value, making interest rate risk management vital to its success. The asset and liability committee of a bank is the internal committee charged with the duty of managing the bank’s interest rate risk exposure through the use of various hedging strategies and instruments. This thesis uses a case study methodology to analyse GBS Mutual Bank interest rate risk management. Its specific business circumstances, balance sheet structure and the market conditions over a specified period are used to comment on the practicality of a variety of balance sheet positioning strategies and derivative hedging instruments. The thesis also provides recommendations for the bank’s asset and liability committee in terms of its functions and organisation. It is elucidated that the most practical balance sheet hedging strategies are a volume strategy and immunisation, while the most practical derivative hedging instruments are interest rate futures and interest rate collars. It is found that the bank has a well functioning asset and liability committee whose only encumbrance to its functionality is the inadequacy of the informational technology used to measure, control and manage its interest rate risk position. This thesis concludes by summarising the practicality of the various interest rate risk hedging alternatives available to the GBS Mutual Bank. Implementing a particular strategy or instrument depends, of course, on its asset and liability committee’s decision.
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  • Date Issued: 2008

International law before municipal courts: the role of International Court of Justice decisions in domestic court proceedings with specific reference to United States case examples

  • Authors: Mangezi, Mutsa
  • Date: 2008
  • Subjects: International Court of Justice -- Cases Vienna Convention on Consular Relations (1963) International and municipal law -- United States -- Cases International law -- United States -- Cases Jurisdiction (International law) -- Cases
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: vital:3711 , http://hdl.handle.net/10962/d1007325
  • Description: In the case of LaGrand (Germany v United States), the International Court of Justice held that the United States (US) had violated its international obligation to Germany under the Vienna Convention on Consular Relations when it executed two German nationals without first informing them of their consular rights. The case came before the court after the United States had disregarded a preliminary ruling passed by the IC], which directed the US not to execute the German nationals pending the outcome of the ICJ case. The decision raised the issue of the effect of ICJ decisions in domestic proceedings and the effectiveness of ICJ enforcement mechanisms. This thesis considers the possibility of a role for national courts as active enforcers of ICJ decisions. It is argued that whilst evidence shows that there is no legal obligation on courts to enforce ICJ decisions, there is certainly room in international law to facilitate this development. In support of this argument, the thesis demonstrates how basic presuppositions about international law have shifted over the last few decades. This shift has been both the impetus and the result of globalisation. The case of LaGrand alongside similar cases is used to show how national courts may play an increased role in the enforcement of ICJ decisions.
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  • Date Issued: 2008

Intimacy in romantic relationships during young adulthood: the role of the mother-daughter relationship

  • Authors: Addinall, Elizabeth Liezl
  • Date: 2008
  • Subjects: Intimacy (Psychology) , Parent and child , Mothers and daughters
  • Language: English
  • Type: Thesis , Masters , M Soc Sc (C Psy)
  • Identifier: vital:11850 , http://hdl.handle.net/10353/160 , Intimacy (Psychology) , Parent and child , Mothers and daughters
  • Description: This study addressed the role of the mother-daughter relationship on the daughter‟s development of the capacity for intimacy with a romantic partner. The objective of this study was to examine whether separateness in mother-daughter interactions was related to romantic intimacy (sexual and non-sexual intimacy) in romantic relationships. The following instruments were used: 1) Socio-demographic questionnaire; 2) Competence in Mother-Daughter Relationship Questionnaire (ICQ-M) and 3) Personal Assessment of Intimacy Questionnaire (PAIR). 179 adolescent female university students participated in this study most of who were between the ages of 20 and 24. The results indicated that a positive relationship existed between separateness and sexual intimacy (r=.688, p<.01) as well as separateness and non-sexual intimacy (r=.598, p<.01). A positive relationship between connectedness and non-sexual intimacy (r=.468, p<.01) was also observed, however no correlation was observed between connectedness and sexual intimacy. These findings indicate that separateness in mother-daughter interactions has a definite effect on the different dimensions of romantic intimacy. Therefore, late adolescent women who possess the ability to assert themselves and express differences between themselves and their mothers are not as apprehensive as their peers when it comes to romantic intimacy with a partner.
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  • Date Issued: 2008

Introduction: Stimela: railway poems of South Africa

  • Authors: Wright, Laurence
  • Date: 2008
  • Language: English
  • Type: text , article
  • Identifier: vital:7058 , http://hdl.handle.net/10962/d1007420
  • Description: preprint , A collection of railway poems is an unusual undertaking. More than an exercise in nostalgia, this anthology captures a large slice of modern South African life, viewed from different perspectives. Many of South Africa’s best poets have written railway poems. This is unsurprising, for railways hold special meaning for a variety of people – people in all walks of life – who find them not only fascinating but emotionally sympatico. The place of railways in the South African economy is changing rapidly, and it will be interesting to see in the coming years whether the less personal, more streamlined business model that is taking shape will attract the same naïve fascination engendered by South African railways over the past two centuries.
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  • Date Issued: 2008

Inventing the Human: Brontosaurus Bloom and “the Shakespeare in us”

  • Authors: Wright, Laurence
  • Date: 2008
  • Language: English
  • Type: text , article
  • Identifier: vital:7045 , http://hdl.handle.net/10962/d1007387 , https://www.taylorfrancis.com/books/e/9781351963534/chapters/10.4324%2F9781315264264-15
  • Description: preprint , This essay was occasioned by the casual reading of a book called Harold Bloom’s Shakespeare (2002), a collection of responses, pro, ante and puzzled, to Bloom’s Shakespearean magnum opus. The more I browsed in the assembled essays, some of them originally reviews and conference papers, others specially commissioned responses, the more curious I became. On the whole, the contributors seemed not to understand Bloom, at least not to understand him adequately, which is a devastating handicap when the task in hand is to pass judgment. The problem seems to be that few academic commentators take Bloom seriously, accepting that he means what he says; more accurately, they find it hard to entertain with full seriousness matters Bloom intends should be taken entirely seriously. Shakespeareans, locked into their various ways of understanding the world and critical activity, generally try to find Shakespeare (or “Shakespeare”) through reading Bloom, whereas he wants us to find ourselves through reading Shakespeare: to uncover what Emerson called ‘the Shakespeare in us’ (‘Shakespeare, or The Poet’, 256). The difference is stupendous. We ought first to ask in regard to Bloom’s blockbuster the question Bloom tells us he learned from Kenneth Burke, ‘What is the author trying to do for himself or herself by writing this work?’ (Shakespeare, 412).
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  • Date Issued: 2008

Investigating aspects of corporate citizenship on private game farms: the case of Mtshelezi Game Reserve in Makana Municipality, Eastern Cape Province

  • Authors: Nyama, Cynthia
  • Date: 2008
  • Subjects: Tourism -- South Africa -- Eastern Cape , Game farms -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions , Agricultural laborers -- South Africa -- Eastern Cape -- Economic conditions , Social responsibility of business -- South Africa -- Eastern Cape , Ecotourism -- South Africa -- Eastern Cape -- Citizen participation , Rural development -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:751 , http://hdl.handle.net/10962/d1003872 , Tourism -- South Africa -- Eastern Cape , Game farms -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions , Agricultural laborers -- South Africa -- Eastern Cape -- Economic conditions , Social responsibility of business -- South Africa -- Eastern Cape , Ecotourism -- South Africa -- Eastern Cape -- Citizen participation , Rural development -- South Africa -- Eastern Cape
  • Description: Research show that post 1996 period has experienced an unprecedented increase in game based operations. The corporate citizenship or corporate social responsibility of the game reserves is of much interest to this study with a focus on the rights of previous and current occupants of farms, workers’ well-being, job creation, quality of life and poverty alleviation within the game/tourism industry. The research was conducted as a qualitative case study and the tools employed for data gathering include: a review of the relevant literature, interviews (face-to-face), the administering of a questionnaire survey and document analysis from diversity of resources which include the Department of Labour, East Cape Agricultural Research Project, and through use of multiple data sources. The approach taken in this dissertation is to examine to what extent the private game reserves in the Makana Municipality can be labelled as “corporate citizens” and this was done by means of a case study of one private game reserve. The areas that are deemed to be most important in this regard are (i) employment history (ii) educational opportunities (iii) wages (iv) housing (v) land tenure. The study established that younger, better educated people are likely to secure better paying employment on PGR. The nature and conditions of sale of the farm to the PGR can impact on the employment secured by workers in the new dispensation. Workers are tied to these jobs because of the very long hours that prevent them from doing anything else to earn money. Some of the workers had opportunities to learn new skills but the question remains; which people are these and how long will growing differentials in earnings reproduce the poorly educated worker in the next generation. The study also high lightened the need for academics and researchers to come with a common set of corporate citizenship measures such as to measure corporate social impacts.
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  • Date Issued: 2008

Investigating learning interactions influencing farmers' choices of cultivated food plants

  • Authors: Pesanayi, Victor Tichaona
  • Date: 2008
  • Subjects: Sustainable development -- Africa Poverty -- Africa Environmental education -- Zimbabwe Food supply -- Environmental aspects -- Zimbabwe Farmers -- Education -- Zimbabwe Agriculture -- Study and teaching -- Zimbabwe Plants, cultivated -- Zimbabwe
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1587 , http://hdl.handle.net/10962/d1003469
  • Description: The most critical hurdle on the path to sustainable development in Africa and the rest of the so-called Third World is poverty, commonly manifested as food security. A number of factors threaten food security in Zimbabwe, and these include climate change, an unstable socio-political environment and economic depression. The major debates and initiatives on sustainable development often fail to focus on the eradication of poverty in southern Africa. As a result, the trade liberalisation programmes signed by African countries in economic partnership agreements leave smallholder farmers vulnerable to the influx of hybrid seed and genetically modified organisms (GMOs), which threaten local agro-biodiversity. This case study has shown that farmers select seed to plant for food as a result of various learning interactions they engage in, which include inter-generational knowledge transfer, farmer to farmer extension and external training by extension organisations and NGOs. A communities of practice (COPs) (Wenger, 2007) framework was used to gain an understanding of the learning interactions among farmers and their stakeholders in Nyanga and Marange COPs of small grain farmers in Manicaland Province, Zimbabwe, who have been working with Environment Africa (A regional NGO). A critical realist causal analysis was conducted to unravel the various causal factors influencing choice. A number of underlying structures and causal mechanisms were found to influence learning interactions and choices in these communities of practice, and they include ambivalence, which influences the changing domain and practice. Climate change, drought and risk were found to affect farmer practice, while power relations affect the community, its practice, domain, sponsorship and the learning interactions in the COPs. The political economy was also found to have a profound effect on the domain and practice. A space was found for the influence of capacity and knowledge sharing in participatory frameworks of the communities, implying that extension quality can be enhanced to promote locally adapted and diverse seed varieties for food security improvement. The study shows that a deeper understanding of the mechanisms influencing the context of teaching and learning provides a more refined insight into the learning interactions and choices of farmers. This, coupled with the social processes descriptors provided by Wildemeersch (2007) has given me a more detailed understanding of the nature of learning interactions influencing farmer choices.
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  • Date Issued: 2008

Investigating teamwork competencies in the value chain of a selected wool brokerage logistics department

  • Authors: Craig, Kenneth Bruce
  • Date: 2008
  • Subjects: Teams in the workplace -- South Africa , Teams in the workplace -- Management
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:8712 , http://hdl.handle.net/10948/936 , Teams in the workplace -- South Africa , Teams in the workplace -- Management
  • Description: department of BKB Ltd. The research aimed at addressing the team balance, the environment and culture in which the team operates and teamwork competencies of the value chain. Thus, creating a high performance value chain team will add to the success of the team, and hence the company as a whole. Research to establish the degree of teamwork within the value chain was undertaken. A survey which included a structured self-administered questionnaire was used to elicit information from all eight value chain team members (four section heads and their four supervisors), who represented the entire cross-section of the value chain team. The research revealed the following important points pertaining to the value chain team: • The team’s balance needs to be addressed; and • The culture and environment in which the team operates needs to be reviewed. Points of interest pertaining to teamwork competencies include the following: • The degree of teamwork is average; • The level of individual competencies is high; • The extent that team members are team players is average; • That team communication is below average; • A high perception of hidden agendas exists; • Dysfunctional team conflict exists; • A high level of empowerment and autonomy exists; • Team leadership - team linker is absent; • Co-operation and collaboration is below average; • Team attitude is high; • Team motivation is high; • Team strategies exist, but need more attention; • Team set goals are set; • Free-wheelers exist in the team; • Job satisfaction is above average; • Team recognition is high; and • Team synergy is average. Teamwork needs to be analyzed holistically, to ensure that the complex dynamics of teamwork is acknowledged and understood. A greater knowledge and understanding of the characteristics and measurement criteria of teamwork will equip team enthusiasts in building high performance teams, to the benefit of all role players. High performance team based organisations will add to the current and future success of the business. As the term “synergy” implies, the result is greater than the sum of the individual effects and capabilities. This emphasises why team-based organisations are fast becoming the modern trend of doing business.
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  • Date Issued: 2008

Investigating the learners perceptions on the factors that influence learners to use and abuse drugs: a case study of one secondary school in the Eastern Cape Province

  • Authors: Pama, Mzingisi Nimrod
  • Date: 2008
  • Language: English
  • Type: Thesis , Masters , M Ed
  • Identifier: vital:16160 , http://hdl.handle.net/10353/186
  • Description: The research interest in this study was on learners’ perceptions on the factors that influence learners to use and abuse drugs. This study discussed learner understanding of drug use and abuse, what learners consider as reasons why learners use and abuse drugs and what could be done to discourage this phenomenon. The investigation was carried in the central region of the Eastern Cape in Fort Beaufort District. This district covers the rural areas of Nkonkobe municipality. I made use of qualitative methodology to obtain data from a sample of 56 learners and 12 teachers including the principal of the school. This study is located in one high school in the Fort Beaufort District. Methods used included learner surveys, learners’ focus group discussions, teachers’ focus discussions, learners individual interviews as well as document analysis. A major finding in this study indicates that learners understood what drugs as well as heir effects on those who use and abused them. The learners also unpacked factors that contribute to this phenomenon, which include peer pressure, socialization, stress and others. Teachers and learners also suggested ways in which drug use can be discouraged. Teacher also acknowledged that there was a drug problem amongst learners in their school and that something should urgently be done to discourage this phenomenon.
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  • Date Issued: 2008

Investigating the potential for the application of lean manufacturing in the can coating plant at Duco Coatings

  • Authors: Erasmus, Deidre Felicia
  • Date: 2008
  • Subjects: Manufacturing processes -- South Africa , Waste minimization -- South Africa , Production management -- South Africa
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:8579 , http://hdl.handle.net/10948/949 , Manufacturing processes -- South Africa , Waste minimization -- South Africa , Production management -- South Africa
  • Description: Companies are constantly expected to be more competitive while working in an environment in which time and cost are limited, thereby preventing such companies from taking the time required to be responsive. It is, therefore, important that companies understand that conventional knowledge and methods will not serve unless there is a concerted focus on improvement of organisational performance toward fulfilling increased expectations, not just maintaining that which is comfortable. A more sustainable approach may be the introduction of lean manufacturing techniques. The lean manufacturing process is one that continuously strives to eliminate waste, thereby increasing the percentage of time that may be devoted to value-adding activities. Lean manufacturing principles were applied in the Can Coating Plant of Duco Speciality Coatings. This study was intended to identify waste in the current production process in the Can Coating Plant and then to use lean tools and principles to eliminate such waste. Implementation of these lean tools proved to result in a leaner and more value-adding process. The new process rendered a positive result on Duco Coating’s costs, quality and product performance. Recommendations on further improvements were also offered.
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  • Date Issued: 2008

Investigating the role of portfolios in developing reflective practice : a case study

  • Authors: Mbango, Karolina Naango
  • Date: 2008
  • Subjects: Portfolios in education -- Namibia -- Case studies Student teachers -- Namibia -- Case studies Teachers -- Training of -- Namibia -- Case studies Teacher educators -- Namibia -- Case studies Reflective teaching
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1595 , http://hdl.handle.net/10962/d1003477
  • Description: The purpose of this study was to investigate the purpose and role portfolios are playing in developing reflective practice in student teachers and to assess the degree to which this role is being achieved in practice. This study was a interpretive small scale case study. The target groups were 3 student teachers in their final year of study, 3 teacher educators and the vice-rector of the college. Data were obtained through interviews and document analysis. The findings indicated that the students had no meaningful orientation to both the role of portfolio development and reflective skills. The sources of this were the lack of common understanding among teacher educators, lack of support for both teacher educators and student teachers and lack of time, lack of guidelines for construction and clear assessment rubric. The results of this study indicated that the teacher educators were in need of vigorous professional development and considerable implementation strategies are needed to develop the desired reflective skills.
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  • Date Issued: 2008

Investigation of polarization mode dispersion measurement perfomance in optical fibre with a focus on the fixed analyzer technique

  • Authors: Gamatham, Romeo Reginald Gunther
  • Date: 2008
  • Subjects: Fiber optics , Polarization (Light)
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:10524 , http://hdl.handle.net/10948/957 , Fiber optics , Polarization (Light)
  • Description: The work presented in this dissertation is a comparative study of polarization mode dispersion (PMD) measurement performance where the fixed analyzer (FA) technique was built and tested for the first time in South Africa. Techniques involved in the study are: the Jones matrix eigenanalysis (JME), generalised interferometric technique (GINTY) and the FA technique, with a particular focus on the FA technique. The FA PMD measurement technique determines the average differential group delay (DGD) from the transmitted intensity spectrum through a polarizer and has three analysis methods (extrema counting, mean level crossing and Fourier analysis) which were all evaluated. PMD measurements were performed in the laboratory on several different fibre types and in the field on buried deployed Telkom fibre links (28.8 km). The techniques showed good agreement in the measured PMD value, both in the laboratory and field measurements. In particular very good agreement was found between the JME average DGD and the extrema counting analysis PMD value. The GINTY and FA Fourier analysis method also gave very similar PMD values. It was found that the fibre birefringence and the mode coupling manifest in different ways on the intensity spectrum. By using the FA ratio method, the length regimes of the different fibre types were determined. Three characteristics of the FA technique were investigated, namely: wavelength window variation, sampling and input SOP scrambling. It was found that the wavelength window and the PMD are inversely proportional. Correct sampling plays a significant role in determining the correct measured PMD value. Lastly an average PMD value over the PMD values for different input SOPs serves as a better representation of the true PMD value. An additional study showed that the FA technique and a developed Poincaré sphere analysis method agree very well regarding the PMD value.
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  • Date Issued: 2008

Isokinetic force profile of the cervical spine in a healthy adult urban South African population

  • Authors: Olivier, Pierre Emile
  • Date: 2008
  • Subjects: Cervical vertebrae , Neck -- Muscles , Muscle strength -- Testing
  • Language: English
  • Type: Thesis , Doctoral , DPhil
  • Identifier: vital:10102 , http://hdl.handle.net/10948/982 , Cervical vertebrae , Neck -- Muscles , Muscle strength -- Testing
  • Description: The aim of this study was to establish reference data for the cervical spine’s dynamic force characteristics in a healthy adult urban South African population aged 19 to 69 years. The reference data was classified according to gender discriminate age categories. In total ten gender discriminate age categories, five male and five female, were created; 19 to 29, 30 to 39, 40 to 49, 50 to 59 and 60 to 69-year-olds. The force characteristics measured, analysed and used to generate reference data in stanine format were: absolute peak torque (P-), relative peak torque (P-/BW), peak power (Pow-), relative peak power (Pow-/BW), peak work (W-), relative peak work (W-/BW), torque acceleration energy (TAE-), maximal voluntary cervical muscle contraction range of motion (MVCR-), controlled full range of joint motion (CFR-), joint angle at peak torque (Jang@P-) and peak torque ratios for cervical flexion (-F), extension (-E), lateral flexion to the dominant (-LD) and non-dominant (-LN) sides. In addition biographic and anthropometric data was also collected. Data, grouped in the ten gender discriminate age categories were compared and statistically and practically significant differences were highlighted between the gender discriminate age categories. Inferential statistics used included ANOVA and Cohen’s d. A significance level of α = .05 was used in all inferential statistical analyses. Correlations between various anthropometric and isokinetic strength variables were also explored.
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  • Date Issued: 2008

Isolation and characterization of antiplasmodial metabolites from South African marine alga

  • Authors: Afolayan, Anthonia Folake
  • Date: 2008
  • Subjects: Malaria -- Africa Antimalarials -- Therapeutic use Malaria -- Prevention Malaria -- Drug therapy Marine algae -- Therapeutic use Natural products -- Therapeutic use Plasmodium
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:3739 , http://hdl.handle.net/10962/d1003063
  • Description: Malaria is one of the three most deadly diseases in Africa. Although there are available treatments, their efficacy has been greatly reduced over the past two decades due to the development of resistance to currently available drugs. This has necessitated the search for new and effective antimalarial agents. This project approached the search for new antimalarial compounds in two ways: (i) by screening natural products isolated from marine algae against the Plasmodium parasite and (ii) by modification of selected isolated active compounds to target 1-deoxY-đ-xylulose 5-phosphate reductoisomerase (DXR), an enzyme found in the nonmevalonate isoprenoid biosynthetic pathway of Plasmodium Jalciparum. It was envisaged that such a compound would exhibit dual action on the Plasmodium parasite. Extracts obtained from 22 marine algae were prefractionated by solvent partitioning and were screened for anti plasmodial activity against the chloroquine sensitive (CQS) P. Jalciparum D 10 strain. Overall, 50% of the algae screened produced at least one crude fraction with activity against P. Jalciparum. Extracts of the algae Sargassum heterophyllum, Plocamium cornutum, Amphiroa ephedrea and Pterosiphonia cloiophylla gave the most promising results. Fractionation of S. heterophyllum afforded three tetraprenyltoluquinols (3.1, 3.2 and 3.5) and an all-trans-fucoxanthin (3.6). Three new compounds (4.5, 4.6 and 4.7) and two known halogenated monoterpenes (4.1 and 4.4) were isolated from P. cornutum. Each of the isolated compounds from both S. heterophyllum and P. cornutum showed antiplasmodial activity with IC₅₀ values ranging from 2.0 - 15.3 μM for S. heterophyllum and 13 - 230 μM for P. cornutum. Attempts to synthetically modify halogenated monoterpene 4.4 by dihydroxylation and phosphorylation in order to inhibit the DXR enzyme was unsuccessful. However, the hemiterpene analogue (5.42) of the halogenated monoterpenes was successfully phosphorylated and dihydroxylated to give compound 5.45 which showed promising activity against DXR. The result obtained indicated that the proposed phosphorylation and dihydroxylation of the halogenated monoterpene 4.4 would result in the synthesis of a potent DXR inhibitor and therefore a potential antimalarial agent with dual mode of action on the Plasmodium parasite.
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  • Date Issued: 2008

Isolation, purification and characterization of a 'factor' from Fusarium oxysporum responsible for platinum nanoparticle formation

  • Authors: Govender, Yageshni
  • Date: 2008
  • Subjects: Nanoparticles , Platinum , Fusarium oxysporum , Fungi , Hydragenase
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:3923 , http://hdl.handle.net/10962/d1003982 , Nanoparticles , Platinum , Fusarium oxysporum , Fungi , Hydragenase
  • Description: Nanoparticles are microscopic particles in the nanometre range of between 1-100 nm. A wide variety of metal nanoparticles have been found to be produced by prokaryotic and eukaryotic organisms including several fungal species, when exposed to solutions containing metal salts. Previous studies have suggested that this bioreduction of metal particles may occur via an active reductase/hydrogenase enzyme process where H2 is the electron donor and positively charged platinum species act as the electron acceptors becoming reduced to a neutral metal nanoparticle. In view of this on going research, the current study investigated the “factors” in the fungus Fusarium oxysporum which were responsible for platinum nanoparticle formation. The fungus F.oxysporum was used in this study as it has been previously shown to produce a variety of nanoparticles including gold and silver. During exposure of the biomass to H2PtCl6 the initial response to the platinum salts was metal internalisation and subsequent reduction of H2PtCI6 to produce platinum nanoparticles. The observed localization and distribution of platinum precipitates provided some evidence for a hydrogenase mediated bioreduction of platinum salts to produce nanoparticles. Factors secreted by the fungus into the extracellular fluids, were shown to be responsible for platinum nanoparticle formation. From the identification, purification and characterisation studies it was concluded that a hydrogenase and other “factors” were responsible for platinum nanoparticle formation in F.oxysporum. Purification of the hydrogenase by freeze-drying and Sephacryl S200 size exclusion- ion exchange chromatography revealed the enzyme to be a dimer with a 29.4 and 44.5 kDa when analysed by a 10 % SDS-PAGE. Characterisation of the enzyme revealed optimal activity at a pH of 7.5 and temperature of 38 °C while it exhibited a poor thermal stability with a half life of 36 minutes. The kinetic parameters Vmax and Km were 3.16 U ml-1 and 3.64 mM respectively. The purified hydrogenase was used in subsequent experiments for the reduction of platinum salts, H2PtCl6 and PtCl2. the results indicated an over 90 % reduction of the platinum salts and TEM micrographs indicated the production of platinum nanoparticles under the various experimental conditions.
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  • Date Issued: 2008

Jantjie v The Minister of Labour Unreported Eastern Cape Division Case No 2193/2006

  • Authors: Glover, Graham B , Beard, M
  • Date: 2008
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/186891 , vital:44545 , xlink:href="///C:/Users/User/Downloads/41DeJure648%20(1).pdf"
  • Description: James Joyce once wrote that "mistakes ... are the portals of discovery" (Ulysses (1964) Ch 9). This aptly describes the legal significance of the judgment in Jantjie v Minister of Labour (unreported decision of the High Court, Eastern Cape Division, case no 3193/2006, decided on 2007-06- 14). In this case, Leach J had to deal with a matter of civil procedure that does not seem to have been dealt with in any reported judgment - the effect of an attorney of record mistakenly failing to sign a notice of motion where an application is brought before the High Court.
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  • Date Issued: 2008

Job stress, burnout and coping strategies of South African police officers

  • Authors: Myendeki, Akhona Nangamso
  • Date: 2008
  • Subjects: Burn out (Psychology) , Stress management , Police -- South Africa , Police -- Job stress , Stress (Psychology) , Job stress
  • Language: English
  • Type: Thesis , Masters , M Soc Sc (C Psy)
  • Identifier: vital:11859 , http://hdl.handle.net/10353/136 , Burn out (Psychology) , Stress management , Police -- South Africa , Police -- Job stress , Stress (Psychology) , Job stress
  • Description: The aim of this study was to determine whether coping strategies of police officers help moderate the outcome of burnout resulting from job stress. The nature of the job demands of police officers is such that they may experience high levels of stress. A convenience sample (N = 89: n Males = 58; n Female = 29) of police officers in police stations in the Eastern Cape was surveyed. The Maslach Burnout Inventory – General Survey, Police Stress Inventory and COPE questionnaire were administered. Results for all the participants indicate that when the occupational stressor Lack of Resources occurs police officers implement Avoidance Coping (COPE) as a strategy, which leads to the experience of Exhaustion. Results also indicate that police officers use Active Coping, Cognitive Coping and Turning to Religion as means of moderating the stress-burnout relationship. Results also show that the coping strategy Avoidance Coping, used by male officers lead to Cynicism. When female police officers experience Job Demands and a Lack of Resources they make use of Seeking Emotional Support as a coping strategy. Male police officers were shown to make use of Active Coping as a strategy to regulate the stress-burnout relationship while female police officers implemented Active Coping and Turning to Religion to act as a buffer between job stress and burnout.
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  • Date Issued: 2008
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