Assessment of selected supply and demand components of the tourism industry in the George/Wilderness Area
- Authors: Rutherford, David Leon
- Date: 2001
- Subjects: Tourism -- South Africa -- Western Cape
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10845 , http://hdl.handle.net/10948/42 , Tourism -- South Africa -- Western Cape
- Description: In this research paper a database of accommodation establishments was compiled, and certain supply and demand aspects of the tourism industry in the George / Wilderness area were measured with a view to determine whether planning by the private sector and local authorities could benefit therefrom. Attention was given to the peculiar nature of tourism demand and tourism supply and how selected components thereof could be measured. The research methodology followed included: a literature survey to facilitate an understanding of the nature of tourism supply and tourism demand; the construction of a database of accommodation establishments in order to identify all participants in the George / Wilderness tourism industry; a telephone survey to determine the supply of bed nights in the area; and a questionnaire survey to determine the demand by tourists for bed nights in the area. The following recommendations and conclusions were made: The database compiled during this study should be kept up to date and be expanded to include visitor profiles such as country of origin, length of stay, and primary reason for travel in order that private and public sector concerns may draw statistics / data to be used in the planning and / or marketing of the tourism industry to tourists. Greater co-operation and co-ordination between private and public sectors of the tourism industry are needed to obtain data concerning the tourism market required for planning purposes as well as a concerted marketing effort. Failing this, legislation should be introduced, compelling accommodation establishments to make available supply and demand data to the regional services council for statistical purposes. The study should be extended to cover the entire Southern Cape region in order to obtain statistics applicable to the region as a whole. This will then facilitate both local and regional planning as well as a coordinated marketing effort.
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- Date Issued: 2001
Assessing the impact of the Human Immunodeficiency Virus / Acquired Immunodeficiency Syndrome on Volkswagen of South Africa
- Authors: White, Stephen Mark
- Date: 2001
- Subjects: AIDS (Disease) -- Economic aspects -- South Africa , Automobile industry and trade -- Management , Labor productivity , Production management , Volkswagen of South Africa (Firm)
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10844 , http://hdl.handle.net/10948/40 , AIDS (Disease) -- Economic aspects -- South Africa , Automobile industry and trade -- Management , Labor productivity , Production management , Volkswagen of South Africa (Firm)
- Description: This treatise takes the form of an impact study. It is based on a three-month period of research involving literature review, interviews with VWSA officers and a survey of 111 of the 5500 workers who comprised the workforce of the VWSA plant in Uitenhage at that time. The author has attempted to portray the general views of experts in the field of HIV/AIDS corporate impact and impact management. In addition he has attempted to assay the current and forecast policies and practices in respect of the management of the epidemic by VWSA. The workers in the plant were consulted by survey and a variety of insights into the level of understanding of the epidemic, tolerance levels, expectations and so on were made. The quantification of these insights must be viewed with caution since the survey sample of 111 was relatively low for a workforce of circa 5500. Calculations in respect of representativity are included to facilitate calculated caution. It has been shown that the HIV/AIDS epidemic has a considerable current impact on the company and that this impact can be expected to grow considerably in the future. It has been suggested that an active intervention program would be well timed if implemented immediately
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- Date Issued: 2001
Assembly of full-length cDNA, and heterologous expression, of Nudaurelia B virus RNA
- Authors: Luke, Gary Joseph
- Date: 2001
- Subjects: Imbrasia cytherea , RNA , Viruses , DNA
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3913 , http://hdl.handle.net/10962/d1003972 , Imbrasia cytherea , RNA , Viruses , DNA
- Description: Nudaurelia beta virus (NβV) is a monopartite genome virus belonging to the family Tetraviridae. Its host range has been found to be limited to a single insect order, the Lepidoptera (moths and butterflies). The single-stranded positive-sense RNA genome consists of 6625 nucleotides containing two open reading frames (ORFs). The 5' proximal ORF of 5778 nucleotides encodes a protein of 215 kDa containing three functional domains characteristic of RNA-dependent RNA polymerase. The 3' proximal ORF, of 1836 nucleotides, encodes the 66 kDa capsid precursor protein and overlaps the replicase gene by more than 99% and is in the +1 reading frame relative to the replicase reading frame. The full-length cDNA construct of the NβV genome was assembled using a homologous overlapping PCR linking method. The starting material consisted of seven overlapping pieces that were constructed for sequencing. Due to the degradation of the full-length RNA obtained from virus extracted from field-collected Nudaurelia cytherea capensis larvae other alternative methods needed to be applied. Sub-cloning using restriction enzyme sites also required an alternative method being used, due to the abundance of restriction sites of the same type in the NβV genome. This led to the use of a method similar to "DNA Shuffling" where overlapping pieces were connected using a modified PCR protocol. After the construction of the NβV genome, the full-length PCR product was cloned and checked for large insertion and deletions that could have resulted from the PCR amplification. The heterologous expression of the NβV capsid protein linked to a fusion protein (Glutathione S-transferase) in E.coli, confirmed the authenticity of the prescribed capsid gene ORF. The expression showed that the virus protein was subjected to protease digestion in DH5α E.coli, suggesting that the protein was insoluble in the cell cytoplasm. The capsid gene expression in a modified E.coli strain, Epicurian Coli BL21-CodonPlus (DE3)-RIL, resulted in high levels of the correct molecular weight protein with minimal degradation. The modified strain was designed for over-expression of eukaryotic protein with lowered protease activity. The above results have opened the way for further research that would yield valuable insight into the molecular biology and replication strategy of the NβV in cell cultures.
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- Date Issued: 2001
Aspects of the new repurchase system of monetary control in South Africa
- Authors: Springfield, Samantha Claire
- Date: 2001
- Subjects: Monetary policy -- South Africa Credit control -- South Africa
- Language: English
- Type: Thesis , Masters , MEcon
- Identifier: vital:940 , http://hdl.handle.net/10962/d1002673
- Description: The main objective of monetary policy is to protect the value of the currency, and in so doing, achieve the objectives of maximum economic growth, development, and the creation of employment opportunities. As from 1985, under the advice of the De Kock Commission, the South African Reserve Bank (SARB), implemented the classical cash reserve system of monetary control. Under this system, the SARB was willing to refinance the money market shortage fully, automatically, and on certain predetermined terms, conditions and costs. However, since the new political dispensation in 1994, South Africa’s financial markets have become more globalized, liberalised, and integrated. Thus, the classical cash reserve system had lost its usefulness, and was no longer effective. As from March 1998, the SARB implemented the new repurchase system of monetary control. In implementing the repurchase system of monetary control, South Africa was adopting a more eclectic approach. This system is aimed at making monetary policy more effective and more flexible in a financial environment filled with complexities. This study finds that the repurchase system has thus far been successful in meeting its objectives. Interest rates are more flexible and sensitive to developments in the domestic and external environment, the signalling mechanism of the SARB has proved to be successful, accommodation and interest rates are closely related and the interbank market has become more developed. Therefore, the repurchase system appears to be more efficient than the previous system of monetary control in South Africa.
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- Date Issued: 2001
Aspects of the cosmic Christ in the spirituality of Dom Bede Griffiths
- Authors: Forster, Dion Angus
- Date: 2001
- Subjects: Griffiths, Bede, 1906-1993 , Catholic Church -- India -- Clergy -- Biography
- Language: English
- Type: Thesis , Masters , MTh
- Identifier: vital:1305 , http://hdl.handle.net/10962/d1018212
- Description: Alan Griffiths was born at Walton-on Thames, England in 1906. He was educated at Christ's Hospital and later at Oxford (under the tutelage of C.S. Lewis). At Oxford he read English literature and philosophy. After considerable inner turmoil he was converted to Christianity in 1931 and entered the Roman Catholic Church in 1933. As a novice Benedictine he was given the name Bede, and was finally ordained as a priest 1940. In 1955 Fr Bede went to India to start a Benedictine community with Dom Benedict Alapatt. He later moved to Kurisumala Ashram in Kerala, and finally, in 1968, to Shantivanam Ashram in Tamil Nadu. He died at Shantivanarn in 1993. Fr Bede was, and still is, regarded by many as a spiritual pioneer. This high regard stems from an appreciation of his spirituality which was rooted in a mystical experience of God. This thesis investigates aspects of Fr Bede's cosmic christology as they arise from his spirituality. The aim of this research is to show that Fr Bede’s cosmic christology that stems from an expression of a real mystical experience of Christ, as the source, sustainer and goal of the whole cosmos, offers both value and insight to Christian spiritual practice and the formulation of doctrine. What makes Fr Bede's spirituality so valuable is the manner in which he integrated East and West in his spirituality and person, coupled with his ability to draw upon that integration in reflecting and articulating his experience - which ultimately shaped his cosmic christology. In order to share his knowledge and experience of the cosmic Christ, Fr Bede draws upon linguistic and philosophical concepts from the East (and Hinduism in particular) as well as the language and theory arising from discoveries in the areas of quantum physics, microbiology and transpersonal psychology in the West. It is the primacy of spiritual experience, coupled with Fr Bede's ability to integrate the religions, cultures and world-views of the East and West within himself, which makes his cosmic christology so compelling.
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- Date Issued: 2001
Aspects of imagery in Catherine of Siena from a Jungian perspective
- Authors: Munro, Alison Mary
- Date: 2001
- Subjects: Catherine of Siena, Saint, 1347-1380 , Christian Saints -- Italy , Jung, C G (Carl Gustav), 1875-1961
- Language: English
- Type: Thesis , Masters , MTh
- Identifier: vital:1308 , http://hdl.handle.net/10962/d1018216
- Description: This study investigates whether or nor not the imagery of Catherine of Siena can be interpreted from a Jungian perspective. It takes a lead from other studies, notably one on Teresa of Avila and Jung. Reading of medieval literature suggests that medievals applied the use of symbols and imagery in ways that are at times baffling to people of our time. Carl Jung was no stranger to imagery and symbol. In our current age with its renewed emphasis on the insights of spirituality, and to some extent its disenchantment with aspects of traditional psychology, there is room for a dialogue between the two disciplines of mysticism and psychology across a six-hundred year divide. The use of imagery, as a window to the soul, in the Christian tradition is examined. Catherine of Siena is situated within her own medieval context, one of upheaval in the church, but also an age of mysticism and spiritual/religious phenomena strange to our own time. Catherine is introduced against the background of her world and against the backdrop of the Dominican tradition. A discussion of some of her major imagery demonstrates her aim of union with God. An understanding of conscious aspects and of unconscious aspects of the self is shown as key to Jung ' s view of the psyche. Elucidation of some archetypes and a discussion of Jung's dream analysis demonstrates how Jung believed the unconscious becomes conscious, and how individuation becomes a possibility. Key Catherinian images are examined from a Jungian perspective. Catherine has relevance for the twenty first century, and we are invited to be challenged by the mysteries and truths to which her images point us.
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- Date Issued: 2001
Applications of Baylis-Idllman methodology in the synthesis of chromene derivatives
- Authors: Nocanda, Xolani Wittleton
- Date: 2001
- Subjects: Heterocyclic chemistry , Heterocyclic compounds -- Derivatives
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4556 , http://hdl.handle.net/10962/d1018257
- Description: The reaction of salicylaldehyde with various activated alkenes, viz., methyl vinyl ketone, ethyl vinyl ketone, phenyl vinyl sulfone, phenyl vinylsulfonate, acrolein and acrylonitrile, under Baylis-Hillman conditions, has been found to proceed with the chemoselective formation of chromene derivatives. The reaction conditions have been optimised and chromene derivatives have been obtained in isolated yields up to 87 %. The generality of the reaction, using 1,4-diazabicyclo[2.2.2]octane (DABCO), as the catalyst, and a heterogeneous (chloroform-water) solvent system, has been established using a range of salicylaldehyde derivatives,. including 2-hydroxynaphthaldehyde. The formation of chromene derivatives, under these conditions, has been assumed to proceed via an initial, Baylis-Hillman reaction, followed by cyclisation involving intramolecular conjugate addition, and subsequent dehydration. Evidence supporting this sequence has been obtained from the isolation ofBaylis-Hillman products from reactions involving the use of tertbutylclimethylsilyl-protected salicylaldehyde, 4-hydroxybenzaldehyde and tert-butyl acrylate as substrates. The potential of the ''Baylis-Hillman zwitterion" to participate as a donor species in Michael-type addition reactions has been explored and a series of climeric products has been isolated. The Baylis-Hillman methodology has also been successfully extended to the synthesis of sulfurcontaining heterocyclic systems, and a range of 3-substituted thiochromenes has been obtained in moderate yields, using 2,2'-dithiobenzaldehyde and various activated alkenes in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as catalyst. The electron-impact mass spectra of selected chromene and thiocbromene derivatives have been investigated permitting comparison of the fragmentation of the oxygen- and sulfur-containing analogues. In a study directed at the synthesis of potential HIV -1 protease inhibitors, chromene- and thiocbromene-containing analogues of the clinically useful drug, ritonavir, have been prepared. Thiochromene and chromene derivatives were converted to the corresponding 3 -carboxylic acids and coupled with a specially prepared, hydroxyethylene dipeptide isostere to afford ritonavir analogues containing cbromene and thiochromene termini in ca. 60% yield.
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- Date Issued: 2001
Application of Pascale's constructive 'conflict paradigm' to consider transformation efforts at a selected bank with particular attention to the ATM devision
- Authors: Coetzer, Gary
- Date: 2001
- Subjects: Organizational change , Banks and banking -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10843 , http://hdl.handle.net/10948/39 , Organizational change , Banks and banking -- South Africa
- Description: In applying Pascale’s (1990) constructive ‘conflict paradigm’ to consider transformation efforts at a selected bank, this study argues that transformation could be sustained if the organisation were to self-reflect on the paradoxes that are generated when constructive conflict is encouraged. Underlying this supposition is the notion of “disequilibrium” which supports creative tension within organisations and prompts inquiry and dialogue, leading to the new. Sustaining disequilibrium allows an organisation to develop the “requisite internal variety” in order to meet the challenges in its environment. Key to encouraging this form of organisational resilience to its environment is the nature of the organisation’s culture or context. Johnson’s (1998) “cultural web” is used to analyse the culture of the selected bank and “re-map” the culture in line with the bank’s transformation strategies. Pascale’s seven domains of contention are applied with particular emphasis on the ATM division in order to develop a profile of conflict in the organisation.
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- Date Issued: 2001
Applicability of a health literacy test from the U.S. in a South African population
- Authors: Lecoko, Motlalepule Lebogang Elizabeth
- Date: 2001 , 2013-04-29
- Subjects: Literacy , Literacy -- South Africa , Literacy -- Ability testing , Reading -- Ability testing
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3824 , http://hdl.handle.net/10962/d1005931 , Literacy , Literacy -- South Africa , Literacy -- Ability testing , Reading -- Ability testing
- Description: This thesis investigates the suitability and applicability of a health literacy test from the U.S. in a black, Xhosa-speaking, South African population. The concept of literacy is a controversial one which has been much debated, as it is not easy to classifY people as simply either literate or illiterate. As a result there are a number of definitions of literacy that vary with purpose and culture, but the most common one is that a person is literate if he/she can read and write. Estimating literacy from years of schooling is an inexpensive method but is also unreliable, since people generally read 3 to 5 grades below their stated educational level. This method affords little insight into the ability of patients to adequately function in a health care enviromnent, an ability which is referred to as functional health literacy. A number of health literacy tests such as the REALM (Rapid Estimate of Adult Literacy in Medicine) test have been developed to assess this skill. The REALM test is a word recognition test which places people into a relevant grade range estimate according to the number of words pronounced correctly. It appears to assume understanding of the word if the person is able to read that word correctly. In this project 125 black Xhosa-speaking respondents of varying educational levels who were literate in English were interviewed with the aid of an interpreter. Comprehensive demographic data were collected. Respondents were first asked to read all 66 words aloud during which time pronunciation was checked, and thereafter they were asked to explain each word. It was found that the ability to automatically decode and read the words did not necessarily guarantee comprehension of these words. Many of the words proved to be unfamiliar to the majority of the Xhosa respondents who were able to pronounce them correctly, but could not explain them. These tended to be phonetically transparent words which were therefore more accessible to the unfamiliar reader. This research has proven to be of great value in helping identify such words which should be substituted with simpler words for use in health information materials. A number of words could neither be pronounced nor understood by the population majority and, interestingly, a small group of words could not be pronounced but were satisfactorily explained by some respondents. The results showed an extremely poor correlation between the stated educational level and the REALM grade range estimate. This emphasizes the inappropriateness of years of formal schooling as an indicator of functional health literacy. The criteria were established for deciding cases in which the REALM test could be applied (or succeeds) and when it is inapplicable (or fails). It was found to be inapplicable in 41% of cases which clearly indicates that, in its current form, it is not a valid, reliable test to use in determining health literacy in this English second language population. It can, however, be used as a basis fur the development of a more appropriate test. Recommendations for future research direction are presented and an alternative structure for a health literacy test is suggested. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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- Date Issued: 2001
Analysis of the modes of entry into the central East Africa market for a multinational enterprise
- Authors: Knight, John Lawry Cole
- Date: 2001
- Subjects: Export marketing , Competition, International , International business enterprises
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10842 , http://hdl.handle.net/10948/38 , Export marketing , Competition, International , International business enterprises
- Description: The research problem addressed in this study is to determine the potential of selling and marketing consumer goods by Multinational Enterprises (MNE) within the African markets. The mode of entry, the timing of entry, the different modes of entry, selection of the entry mode, the political and economic risks, core competencies of the company and strategic alliance was researched. To achieve this, research was executed on the above areas of importance using relevant literature in which an understanding of the international markets and their options of modes of entry were highlighted. In this way one is able to understand the importance of the international markets and the concerns of doing business in Africa in order to select the entry mode that could best suit the company and the country or countries in Africa. The literature study was then used to develop a questionnaire to test the degree to which managers in MNE in South Africa (SA) and Central East Africa (CEA) concur with regard to the decisions, risks, procedure, modes of entry and selection of modes of entry into Africa. The empirical results obtained indicate a strong concurrence with the analysis of the modes of entry into CEA market for an MNE. The analysis of the literature study, Chapter 2 and 3, gives business a good understanding of the advantages and disadvantages of the problems and opportunities associated with the entry decisions into CEA. Many other companies are entering the African markets from other parts of the world and SA has also been seen as a launching pad into Africa. The analysis will give companies the edge in seeing the problems and opportunities in African markets and the way forward when deciding to enter.
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- Date Issued: 2001
Analysis of supply chain improvement strategies by first tier automatic suppliers in the Nelson Mandela metropole
- Authors: Tinderholm, Pieter Johannes
- Date: 2001
- Subjects: Business logistics , Production management
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10841 , http://hdl.handle.net/10948/37 , Business logistics , Production management
- Description: First tier automotive suppliers in the Nelson Mandela Metropole are under continued pressures created by the process of globalisation. To stay globally competitive suppliers, have to rethink their supply chain strategies. It is important that suppliers understand the environment that it operates within, this environment present first tier automotive suppliers with numerous problems and challenges. An analysis of this problems and challenges are needed and supply chain strategies need to be developed to overcome these problems and challenges. Before these strategies can be developed a full understanding of the supply chain is necessary. This dissertation aims to assess the problems and challenges facing first tier automotive suppliers, give a full understanding of the supply chain and present strategies to overcome these problems and challenges. The supply chain has become less structured and closer partnerships are needed between trading partners. The connectivity, transparency and visibility of the supply chain have improved through developments in the communication technology field. Strategies need to utilise these technologies to create a competitive edge. Effective supply chain strategies need to enable first tier automotive suppliers to deliver materials: At the right time; In the right quantities; At the right quality.
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- Date Issued: 2001
An investigation of the municipal credit control policy, with special reference to the Nelson Mandela Metropolitan Municipality
- Authors: Tsatsire, Israel
- Date: 2001
- Subjects: Municipal finance -- Accounting
- Language: English
- Type: Thesis , Masters , MTech (Tourism management)
- Identifier: vital:10769 , http://hdl.handle.net/10948/67 , Municipal finance -- Accounting
- Description: In this mini-dissertation, an investigation of the municipal credit control policy, with specific reference to the Nelson Mandela Metropolitan Municipality was undertaken. The dissertation comprises six chapters. The study is based on the assumption that the existing credit control policy currently (2001) used by the Nelson Mandela Metropolitan Municipality to collect service arrears has failed and that this failure is the reason why the Municipality is struggling to survive financially. This is affecting the rendering of services. The validity of this assumption was investigated. The primary objectives of the research included, inter alia, to provide a brief theoretical background on the transformation of local government in South Africa. This was followed by an investigation of the role of South African local government and the impact of non-payment for municipal services, with specific reference to the Nelson Mandela Metropolitan Municipality. The empirical survey, the research methodology and the interpretation of the research findings are described. This is followed by an explanation of the survey questionnaire used for the accumulation of data needed for the analysis. The research findings of the empirical survey were statistically analysed and reported.
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- Date Issued: 2001
An investigation of factors which influence integrating indigenous knowledge of medicinal plants into the learning programme for Grade 9 General Science
- Authors: Kimbugwe, Francis Kambugu
- Date: 2001
- Subjects: Ethnoscience Ethnoscience -- South Africa -- Eastern Cape Medicinal plants -- South Africa -- Eastern Cape Curriculum planning -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1624 , http://hdl.handle.net/10962/d1003506
- Description: This study explores knowledge of some medicinal plants amongst the sub-urban community of and around a township in the Eastern Cape province. This qualitative interpretivist case study presents the prior knowledge of medicinal plants possessed by Grade 9 learners, which is used as a springboard toward interviewing traditional healers, herbal practitioners and lecturers at a university in the departments of Botany and Pharmacy. The data obtained from the informants reveals the factors that can influence integration of indigenous knowledge of medicinal plants in the learning programme for grade 9 General Science. These factors include: prior knowledge and enthusiasm of Grade 9 learners and teachers, support of the community which include parents, traditional healers, herbal practitioners and professionals who could introduce indigenous knowledge of medicinal plants into formal education, availability of resource materials and complexity of identifying pharmacologically tested plants from other indigenous medicinal plants. The analysis and discussion of the findings, have led me to conclude that the enthusiasm of learners who have a rich background of indigenous knowledge on medicinal plants is likely to be hampered by the unenthusiastic teachers as well as the reluctance of herbal practitioners in their communities to part with this knowledge. Hence I recommend that teachers be motivated through workshops and in-service training, conducted by goverr\ment paid herbal practitioners using the prior knowledge of learners as a stepping-stone.
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- Date Issued: 2001
An investigation into the use of electrode mass measurement to optimise an electrostatic precipitator unit
- Authors: Pershad, Sathish Kumar
- Date: 2001
- Subjects: Electrostatic precipitation
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10815 , http://hdl.handle.net/10948/66 , Electrostatic precipitation
- Description: Electrostatic precipitators (ESP’s) can be simply described as particle collection devices and service a wide variety of industries. This particle collection can either be classed as a cleansing or product recovery (or both) process. They can be found in fossil fueled power generation plant (municipal incinerators, iron and steel industries (sinter plants, coke ovens), non ferrous industries, rock products (cement, lime), chemical and petrochemical (detarrers, de-oilers) They have been around for approximately 70 years and their fundamental principle of operation has not changed much during this time. What has changed is the demand on their operating efficiency. Environmental pressure as well as the loss of product has forced ESP’s to perform even better than before. This performance enhancement is two-fold : an increase in collection efficiency and a reduction in maintenance and wear costs. This project researches the use of mass measurement techniques to optimise the operation of ESP’s from both the above mentioned perspectives.
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- Date Issued: 2001
An investigation into the role of leadership in strategic planning
- Authors: Van Wyk, Luhan George
- Date: 2001
- Subjects: Leadership , Strategic planning
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10888 , http://hdl.handle.net/10948/65 , Leadership , Strategic planning
- Description: Strategic planning will reach its full potential once leadership operates effectively within the South African organisation. In this research, theoretical views of strategic planning and the role leadership should perform within South African organisations in the year 2000 are investigated. Firstly, the author conducted a theoretical study into the strategic management model, and the most important factors influencing it. Secondly, the author investigated the leadership theories in relation to strategic planning. Thirdly, an empirical study was conducted to determine to which extent South African managers are successful leaders, and the resulted impact on strategic planning. Lastly, the author evaluated the empirical study, and made recommendations based on the literature and empirical study conducted.
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- Date Issued: 2001
An investigation into the possible neuroprotective role of melatonin in copper-loading
- Authors: Parmar, Paresh H
- Date: 2001
- Subjects: Melatonin , Copper , Nervous system -- Degeneration -- Treatment
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3783 , http://hdl.handle.net/10962/d1003261
- Description: Copper is an extremely toxic metal in biological systems and thus, its availability to the system, must be effectively and efficiently controlled. Copper is vital for life, as it is essential for critical enzymes in biological systems. It is free copper in the biological systems that is toxic, as free copper induces free radical generation, which disrupts lipid membranes, interacts with DNA causing mutations, and eventually leads to cell death. Wilson’s disease is a inherited copper disease, which results in hepatolenticular disease. Copper is unable to be excreted, and thus accumulates, eventually spilling over into the bloodstream from the liver, and “poisons” the patient. The Wilson’s disease patient leads a short life, due to neurological and hepatological problems. There is no cure for Wilson’s disease, only chelation therapy using potent chelators such as penicillamine and EDTA. Zinc, in high doses, can be used to compete with copper absorption. This has proved to be the only successful therapy at present. This study investigates the possible use of melatonin as a copper binder/chelator. Melatonin has been shown to interact with copper in vitro. By binding/chelating to copper, melatonin may inhibit copper-induced free radical generation, and thus prevent copper from interacting with DNA to cause mutations and act as a cytotoxin. In vivo studies on copper (2mg/kg) administered for 2-weeks and 6-weeks were carried out on Wistar rats. The potential of melatonin (12mg/kg) to prevent copper-induced cellular damage was investigated. The results indicate that melatonin does not protect the lipid membranes from copper-induced lipid peroxidation. In vitro investigations using 1mM, 5mM and 10mM copper and 5mM melatonin, show that melatonin prevents copper-induced lipid peroxidation at a copper concentration of 1mM (p<0.001). The 5mM and 10mM copper induces less lipid peroxidation, compared to the 1mM copper. It has been reported that metal ions, antioxidants and chelating agents can influence peroxide decomposition during the assay. Melatonin (5mM) administration does not significantly prevent copper-induced lipid peroxidation at 5mM and 10mM copper. It is possible that due to melatonin’s relatively low concentration, it is unable to inhibit lipid peroxidation induced by the copper. The chemical nature of the interaction between melatonin and copper was also investigated, using NMR, IR and electrochemistry techniques. The NMR and IR techniques show that melatonin coordinates with Cu²⁺ and not Cu¹⁺, at the carbonyl group of melatonin. The electrochemistry experiments using cyclic voltammetry and adsorptive stripping voltammetry, show that melatonin forms a strong bond with Cu¹⁺. Cu²⁺ prefers binding to oxygen, and that is clearly seen in the NMR and IR. Cu¹⁺ prefers binding to nitrogen and then oxygen, and this is seen in the electrochemistry, as Cu¹⁺ is forced to bind through one of the nitrogens on the melatonin. Previously, it has been shown that melatonin binds/chelates with Cu²⁺. Histochemical investigations show that copper administration for 2-weeks and 6-weeks, causes extensive mitochondrial damage in liver and kidney’s proximal convoluted tubule epithelium cells. Melatonin (12mg/kg) co-administration with copper for 2-weeks and 6-weeks did not significantly protect the mitochondria from copper-induced damage. Copper-specific stains (rhodanine, silver sulphide and rubeanic acid) were used to stain liver, brain and kidney tissue samples. Rhodanine and silver sulphide were equally sensitive in staining copper in the 2-week samples, but not at all in the 6-week samples. This could not be explained. Rubeanic acid was ineffective in all samples tested. Thus, it appears that specific copper stains cannot be used in making a definitive diagnosis in cases of copper overload, and that specific copper stains do not always correlate with a high concentration of copper present in tissues. Pineal organ culture was used to determine the effect of copper administration on pineal indole synthesis. Exogenous (³H) tryptophan was administered to the pineal organ cultures, and the level of (³H) pineal indoles synthesised, were measured. Pineals from 2-week and 6-week copper/melatonin treated animals exhibited paradoxical 5- methoxytryptophol (ML) levels, as compared to the 2-week and 6-week copper treated animals. The 2-week copper/melatonin administered animals, showed a decrease in the ML level (p<0.01), and the copper/melatonin administered for 6-weeks, showed an increase in the ML levels (p<0.01). This indicates that melatonin interacts with the HIOMT enzyme. Pineals from 6-week copper/melatonin treated animals, as compared to the 6-week copper treated animals, showed an increase in N-acetylserotonin levels. This indicates that melatonin prevents the inhibition of the NAT enzyme. The final experiment was to determine in vitro, the effect of Cu²⁺ and Cu¹⁺ administration, on mitochondrial electron transport chain. Rat liver homogenate was incubated with and solutions of Cu²⁺ (10mM) and Cu¹⁺ (10mM) and melatonin (10mM). Cu²⁺ administration caused an inhibition of the electron transport at t=0 and t=60, whereas Cu¹⁺ administration at t=0 caused an inhibition of electron transport, but at t=60, Cu¹⁺ administration stimulated electron transport. Melatonin administered with Cu²⁺, resulted in an inhibition of the electron transport chain at t=0 and t=60. The findings of this study indicate that melatonin might have a potentially beneficial effect in copper overloading, by binding/chelating copper.
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- Date Issued: 2001
An investigation into the effectiveness of technology change management in a selected manufacturing organisation in the Nelson Mandela Metropole
- Authors: Oosthuizen, Johan
- Date: 2001
- Subjects: Bridgestone/Firestone (Firm) , Industrial relations -- Technological innovations , Organizational change -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10916 , http://hdl.handle.net/10948/64 , Bridgestone/Firestone (Firm) , Industrial relations -- Technological innovations , Organizational change -- Management
- Description: This research investigated technology change management at Bridgestone/Firestone in the Port Elizabeth metropole. From a manufacturing organisation’s point of view it is clear that technology change is a constant force that determines competitiveness. The thesis outlines the specific requirements needed for utilising the concept of technology change management at Bridgestone/Firestone. The literature survey was aimed at placing the concept of technology change management and the correct organisational structure and organisational focus points in perspective to ensure successful technology change and its implementation at Bridgestone/Firestone. The purpose of the empirical study was to test managements perseptions of technology change management at Bridgestone/Firestone and to contribute useful information to the organisation. From the findings improvements and recommendations were suggested as guidelines for any tyre manufacturer to follow to improve technology change management. The empirical study results show that there is room for improvement. The responses to statements outlined areas that need improvement and those that do not according to the views of Bridgestone/Firestone’s management.
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- Date Issued: 2001
An inventory of medicinal plants traded on the western boundary of the Kruger National Park, South Africa
- Authors: Botha, Jenny , Witkowski, Ed T F , Shackleton, Charlie M
- Date: 2001
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/181662 , vital:43756 , xlink:href="https://doi.org/10.4102/koedoe.v44i2.172"
- Description: The World Health Organisation estimates that traditional medicine still plays a vital role in the lives of 70-80 of the populations of developing countries. Approximately 20 000 tons of medicinal plants are estimated to be traded in South Africa annually, resulting in considerable pressure on the wild populations from which these plants are harvested. In 1997, a study was initiated to assess the extent of trade in medicinal plants on the western boundary of the Kruger National Park, and to determine local perceptions of the availability and values of these plants. This paper presents an inventory of the species traded, including vendors' and traders' perceptions of current availability of species and consumer demand, as well as price/kg. In Mpumalanga, 176 species were identified (71 of the vernacular names encountered in the market place), representing 69 families. In Northern Province, 70 different species were identified (84 of the vernacular names recorded in the markets), representing 40 families. Perceptions of availability of a species varied considerably, often within the same markets. Perceptions of demand tended to be more consistent, although these also sometimes varied. Although monitoring markets is an efficient means of assessing the conservation status of medicinal plants, it is important to select appropriate parameters. Markets often differ from one another, and an understanding of local conditions is crucial. For example, in the medicinal markets on the western boundary of the Kruger National Park, price/kg and market perceptions of availability of species were highly variable and would thus not provide a consistent monitoring parameter. Perceptions of demand provide an indication of current and potential pressure on a species, particularly when combined with the monitoring of species traded, and the introduction of substitutes in the market place. The size of plant parts traded could also provide useful monitoring data. It is important to identify the plants utilised locally first hand where possible, due to the variation of vernacular names from one area to another.
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- Date Issued: 2001
An inquiry into the incorporation of a multicultural approach in contemporary textbooks in South Africa
- Authors: Sharma, Anjali
- Date: 2001
- Subjects: Multicultural education -- South Africa Multicultural education -- Curricula Textbooks -- South Africa -- Evaluation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1579 , http://hdl.handle.net/10962/d1003461
- Description: During the past few decades a substantial body of research has emerged in western as well as the developing nations studying the racial bias in children's texts. However, it is only recently in South Africa, with the ascendance of the ANC government, that interest has been focused on eliminating apartheid values and on promoting multicultural tenets in the school curriculum. It is undeniable that the concept of multiculturalism has been severely stigmatised in the South African educational context. Anxieties have been expressed about embracing the discourse of multicultural education within the educational system based on fears that, like the previous educational system, it too will perpetuate group differences. Nevertheless, in recent years, a clear consensus view has emerged that the implementation of multicultural education is imperative if the goal of a rainbow South Africa is to be realised. Against this background, the present study attempts to study the incorporation of a multicultural approach into contemporary textbooks. To realise this aim I selected a sample of four textbooks, one from each of the major disciplines (science, English, geography and history), and SUbjected the texts and pictures from each to content analysis. The findings of this study suggest that a multicultural approach shall at least for the foreseeable future remain a central feature of learning materials produced for the new South African curricula. The findings indicate that multicultural aspects predominate in the texts as compared to other ideologies. This applies to both text content and illustrations. Contrary to the researcher's initial expectation, however, the texts also reveal a strong tendency towards Eurocentric and patriarchal approaches. This research does not conform to traditional, 'scientific' criteria of validity and reliability; it seeks only to investigate textbook material in more depth and thereby contribute to a more comprehensive understanding of the extent to which the texts subscribe to a multicultural approach. Such understanding may help both educationalists and authors in their evaluation of existing textbook material, and in the production of new texts which reflect the reality of South Africa as a multicultural society.
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- Date Issued: 2001
An exploratory study of the experiences of black teenage mothers
- Authors: Mpetshwa, Nomonde
- Date: 2001 , 2012-06-20
- Subjects: Teenage pregnancy , Teenage pregnancy -- South Africa -- Eastern Cape , Black teenage mothers -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:704 , http://hdl.handle.net/10962/d1006470 , Teenage pregnancy , Teenage pregnancy -- South Africa -- Eastern Cape , Black teenage mothers -- South Africa -- Eastern Cape
- Description: An exploratory descriptive design was used to explore the experiences of a sample of black teenage mothers of Libode, Ngqeleni and Port St Johns. A St Barnabas Hospital birth record register was used to select seven Xhosa speaking black teenage mothers, with children under a year old who have kept their children and are staying with their extended families. Qualitative interview was used to collect data from the abovementioned respondents. The data one want to use may not feasibly be available in any other form, so that asking people for their accounts, talking and listening to them, may be the only way to get at what you are interested in (Mason 1998:39). Qualitative interview was therefore used to collect data from the abovementioned respondents. Qualitative interview according to Mason (1998:38) involve one to one interaction as in this study, or a larger group, and it carries more advantages in data collection compared to other research tools. Some interesting information, which drew the researcher's attention, was gathered. Information such as the reaction by family members, community and its structures, and peers including teenage fathers, made the research more challenging. The anger showed by brothers of one of respondents raised the researcher's curiosity. Another interesting piece of information that was gathered was the negative reaction by the church. The researcher had no idea that the church can negatively involve itself in community affairs, but one of the respondents reported to have been encouraged by one of the church members to go on with her studies despite her pregnancy. The same applied to some schools, where pregnant teenagers were not allowed to continue schooling, while in other schools the same situation was allowed. The major findings were that, respondents have forfeited some of their favorite hobbies such as extra mural school activities, teenage activities and their lives have been negatively affected by their teenage motherhood in areas such as education, family relations, peer relations including their boyfriends and community. Again lack of support by people close to these young mothers including different professionals has also been identified. It has also transpired during this study that, teenagers can indeed be good mothers, but socioeconomic stress and lack of social support often prevent them from giving their babies a reasonable start in life. Amongst the recommendations made undertaking a bigger study has been suggested
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- Date Issued: 2001