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Knowledge retention practices among healthcare workers at Cecilia Makiwane Hospital, Eastern Cape Province of South Africa

  • Authors: Jonga, Nqabakazi
  • Date: 2019
  • Subjects: Knowledge management Organizational learning
  • Language: English
  • Type: Thesis , Masters , M LIS
  • Identifier: http://hdl.handle.net/10353/11461 , vital:39074
  • Description: Knowledge has transformed to become an economic resource in a knowledge-based society, which determines the proficiency, progress and efficiency of any performed task. However, efficiency can be compromised when the health sector fails to retain the wealth of knowledge from experienced, senior and subject experts who have, or are about to leave or retire from the institution. Knowledge management provides for knowledge acquisition, sharing, transfer and further motivates the creation of influential atmospheres for knowledge sharing in the Public health sector. Healthcare is a knowledge driven process and thus knowledge management and the tools to manage knowledge in the healthcare sector are receiving attention. This study investigated knowledge retention practices in the Public health sector, Eastern Cape Province of South Africa. The study was informed by the Socialisation, Externalization, Combination, Internalization SECI model of knowledge creation and conversion by Nonaka & Takeuchi (1995) and the Knowledge based theory of the firm by Grant (1996). Both theories interpret knowledge sharing and preservation as vital for institutional growth and effective service delivery. The theories advised on the establishment of platforms designated for acquisition of new knowledge, knowledge sharing and retention to assist in future decision making to obtain a competitive edge. The study employed a mixed method approach that is largely quantitative in nature. Self-administered questionnaires were adopted for quantitative data collection and three interviews were conducted with middle management to supplement the quantitative data. The reliability and validity of the research instruments was achieved through adapting, and modifying questions from previously used research instruments from the works of Dewah, (2012); Teffo, (2014) and Tatani, (2015). New questions were further developed and evaluated through expert analysis. The study took place at Cecilia Makiwane Hospital in Mdantsane, Eastern Cape. The population of the study comprised of qualified healthcare workers in the health sector mainly “nurses”. The sample size was 198 and three interviews were conducted with the middle management to obtain qualitative data. xix The findings of the study revealed that the concept of knowledge retention was not dominant in public hospitals such as Cecilia Makiwane; however, certain practices are adopted to stimulate knowledge sharing thus contributing to knowledge retention. Several factors such as budget, ICT use, time allocation, fear of losing the competitive value through knowledge sharing and absence of supporting structures or services have been identified as root causes for reduced knowledge sharing practices among healthcare workers. The study, therefore, recommends the appointment of knowledge officers who would oversee the effective implementation of knowledge management policies and adopt strategies that will assist with knowledge retention. Further recommendations are, effective integration of knowledge management practices into the system, development of an internet based system for effective communication and institutional repositories for knowledge preservation. The study concludes that the development of training programs would assist healthcare workers to be familiar with any new or old invented mechanism.
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  • Date Issued: 2019

Teaching NCS (CAPS) FET mathematics: a comparison between an offline techno-blended Model and a traditional approach

  • Authors: Munemo, Noname
  • Date: 2019
  • Subjects: Mathematics -- Study and teaching (Secondary) , Mathematics -- Study and teaching (Higher) -- South Africa Blended learning Educational innovations
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: http://hdl.handle.net/10948/41614 , vital:36545
  • Description: This research is a comparative research study that compares the way learning has taken place when selected mathematics topics were taught to two groups of Grade 11 Mathematics learners. An offline Techno-Blended Teaching and Learning Model was used for one group, while the other group was taught without the integration of technology. The cognitive and affective impact of the use of technology when an offline Techno-Blended T&L Model was followed, was compared to a corresponding impact of an approach where no technology was integrated during the teaching of the topics. The research study involved teachers and selected learners in the Mathematics classes from four different high schools selected from two urban districts in the Eastern Cape Province in South Africa. The curriculum topics that the research focused on were Euclidean Geometry and Trigonometry.
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  • Date Issued: 2019

Conscientious objection and South African medical practitioners' constructions of termination of pregnancy and emergency contraception

  • Authors: Chiwandire, Desire
  • Date: 2015
  • Subjects: Abortion -- South Africa , Abortion -- Moral and ethical aspects -- South Africa , Emergency contraceptives -- South Africa , Contraception -- Moral and ethical aspects -- South Africa , Medical personnel -- Attitudes -- South Africa , Patients -- Legal status, laws, etc. -- South Africa , Reproductive rights -- South Africa , Women's rights -- South Africa , Liberty of conscience
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:2888 , http://hdl.handle.net/10962/d1017863
  • Description: Aim: The 1996 Choice on Termination of Pregnancy Act decriminalized abortion in South Africa and the South African Medicines Control Council in 2000 approved the dispensing of emergency contraceptive methods by pharmacists to women without a doctor's prescription. This legislation has been hailed as among the most progressive in the world with respect to women's reproductive justice. However the realisation of these rights in practice has not always met expectations in part due to medical practitioners' ethical objections to termination of pregnancy and the provision of related services. The aim of this study was to interpret the varying ways in which medical practitioners frame termination of pregnancy and emergency contraceptive services, their own professional identities and that of their patients/clients. Methods: Sample of 58 doctors and 59 pharmacists drawn from all nine provinces of South Africa. Data collected using an anonymous confidential internet-based self-administered questionnaire. Participants were randomly recruited from online listings of South African doctors and pharmacists practicing in both private and public sectors. Data were analysed using theoretically derived qualitative content analysis. Results: Participants drew on eight frames to justify their willingness or unwillingness to provide termination-of-pregnancy related services: the foetal life frame, the women's rights frame, the balancing frame, the social justice frame, the do no harm frame, the legal and professional obligation frame, the consequences frame and the moral absolutist frame. Conclusion: Health professionals' willingness or unwillingness to provide termination of pregnancy related services is highly dependent on how they frame or understand termination of pregnancy, and how they understand their own professional identities and those of their patients/clients.
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  • Date Issued: 2015

Metallophthalocyanine-gold nanoparticle conjugates for photodynamic antimicrobial chemotherapy

  • Authors: Mthethwa, Thandekile Phakamisiwe
  • Date: 2015
  • Subjects: Nanochemistry , Phthalocyanines , Photochemistry
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4543 , http://hdl.handle.net/10962/d1017923
  • Description: This thesis presents the synthesis of neutral and cationic metallophthalocyanines and their gold nanoparticles conjugates. The spectroscopic characterization of these compounds is presented herein. The studies presented in this work shows that the conjugation of gold nanoparticles influenced both photophysical and photochemical properties. Gold nanoparticles were found to enhance the singlet oxygen quantum yield while lowering the fluorescence quantum yields. This work also looks at the effect of anisotropic gold nanoparticles such as nanorods and bipyramids on the photophysical behaviour of the metallophthalocyanines. The effect of the size of the gold nanorods was investigated herein. The results show that photophysical and photochemical properties can be influenced by both size and shape of the nanoparticles. Physical characterization about the loading of nanoparticles was also looked into. Parameters such as the surface area, the number of surface atoms, the number of atoms as well as the number of nanoparticles loaded on the surface of the phthalocyanines were studied. The self-assembled monolayers formed by phthalocyanines on gold surfaces were studied using the X-ray photoelectron spectroscopy (XPS). The gold nanoparticles synthesized herein include both organic and water soluble, different capping agents (citrate, tetraammonium bromide (TAOBr) and cetrimethylammonium bromide (CTAB). The concentration of the gold nanoparticles was measured on the inductively coupled plasma (ICP) and their size and shape were obtained from the transmission electron microscopy (TEM) images. A cationic aluminium phthalocyanine and its conjugates were used for photoinactivation of bacteria and fungi. The results show significant reduction and higher activity in the presence of gold nanoparticles, especially nanorods. A small chapter in this work presents an attempted work on the binding of metallothionein protein with protophorphyrin (IX). The pH and concentration dependent binding studies were investigated
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  • Date Issued: 2015

A case study of a pre-service mathematics education course to grow and develop proficient teaching in mathematics in the intermediate phase

  • Authors: Lee, Amanda Jane
  • Date: 2014
  • Subjects: Mathematics -- Study and teaching -- South Africa , Mathematics teachers -- Training of -- South Africa , Mathematics -- Study and teaching (Elementary) -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:2004 , http://hdl.handle.net/10962/d1015664
  • Description: This research study investigated the ways in which a mathematics module, informed by an enactivist philosophy, enabled pre-service teachers to unpack the reality of their teaching practice in terms of proficient teaching. Given the generally poor mathematics results in South Africa it is not enough for teachers to be merely proficient in Mathematics. They also need to be in a position to explain important mathematical concepts to children in a manner that will encourage and develop an understanding of the basic mathematical concepts. It was my intention with this study to determine whether a mathematics education module, that embraced the underlying themes of enactivism as part of its teaching pedagogy, could have the potential to develop and increase the skills of pre-service teachers’ teaching for proficiency in Mathematics. The mathematics module was underpinned by five themes of enactivism namely: autonomy, embodiment, emergence, sense-making and experience and was designed to supplement the pre-service teachers’ basic skills in Mathematics in the Intermediate Phase. This mathematics module was offered to fourth year pre-service teachers completing a B.Ed. in the Foundation Phase at a private institute specialising in the training of teachers. The theoretical framework was informed by enactivism and how the themes of enactivism could be used as a vehicle to develop teaching proficiency. The study was qualitative in nature and situated within an interpretivist paradigm. The specific perspectives of interpretivism that were used were hermeneutics, phenomenology and reflexivity. The research design was a case study that contained elements of action research and encompassed three phases of data collection. The first phase focused on the pre-service teachers’ approach to teaching Mathematics and what this brought forth in terms of the reality of their teaching practice and the problems they encountered. The second phase undertook to determine what growth and development of teaching proficiency in Mathematics had emerged over the research period. The final phase was undertaken after the pre-service teachers had graduated and were employed as full time teachers in the Intermediate Phase. The analytical framework and lens through which the data was analysed was that of Kilpatrick, Swafford and Findell’s (2001) strands of mathematical proficiency. The argument that I present is that the themes of enactivism did contribute to the growth of the pre-service teachers’ teaching for mathematical proficiency. The themes of embodiment and experience were major contributions in revealing that this was a reality for the pre-service teachers from a practical perspective and was what they would be able to take away with them. However the theme of emergence stood out as the principle that generated the most awareness and growth and which, in turn, affected the participants’ autonomy.
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  • Date Issued: 2014

A psychoanalytic hermeneutic investigation of destructive narcissism

  • Authors: De Wit, Estelle
  • Date: 2013-06-04 , 2004
  • Subjects: Narcissism Narcissism -- Treatment Psychoanalysis Death instinct Ego (Psychology) Self psychology
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:3180 , http://hdl.handle.net/10962/d1008055
  • Description: The purpose of this research was to investigate the clinical phenomenon of destructive narcissism. Contemporary Kleinian and neo-Kleinian theoretical perspectives provided the interpretative perspective on the complexities of inaccessible personalities and subtle forms of internal destructiveness. Four research questions were formulated to interrogate the individual and collective experiences of three male patients whose internal worlds seem to be governed by rigid intrapychic structures organized around the dictatorship of a constellation of seemingly impenetrable defensive strategies. These questions were as follows: 1. What emotional states, actions and experiences of self and others characterize the clinical phenomenon designed as destructive narcissism and distinguish it from other forms of character pathology? 2. What early developmental experiences and relationships may have pre-disposed individuals to the development of this type of character pathology? 3. How are the psychodynamic processes of destructive narcissism structured and configured in the psychotherapeutic process and progress? 4. What are the transference/countertransference psychotherapeutic manifestations of the psychodynamics of destructive narcissism? The illustrative-didactic case study method was utilized to discuss pertinent aspects of each patient. This included their early developmental histories, inter- and intrapersonal relationships, their current mental state, defensive strategies and their stated reasons for commencing psychotherapy. In addition, the structure of the psychotherapeutic process with these patients was reviewed in depth. Various psychic and personality features, as unveiled through this process were discussed, as well as the implications of these for the therapeutic endeavor. The features chosen for discussion were: Firstly, the constellation of the internal object world, the capacity for symbolic thought and defensive organizations. Secondly, therapeutic ambivalence, which made psychotherapy untenable, was explored in conjunction with transference/countertransference issues. Thirdly, the shadow sides of psychotherapeutic change with these patients were considered and the issues of therapeutic failure and other treatment possibilities were examined. It was concluded that there need be an important shift with regard to the psychotherapeutic goals for those patients whose condition may be chronic, and for whom it appears that psychotherapy is of little benefit. In essence, the intent of psychotherapy with these patients is to reach the healthy sane patient of the patient within the pathological organization. Attempts to unravel the perverse gratification and protection derived from the domination of the narcissistic structure may not be enough, and the patient's collusion with the internal destructive gang should also be exposed. If this can be achieved, the patient may come to accept the existence of a part of himself as truly destructive. This, in turn, cannot be disowned, therefore the patient has to live with it. Thus, in destructive narcissism, the challenge for the therapist is the extremely difficult task of disentangling the patient's pain from the idealization of internal destructiveness. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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  • Date Issued: 2004

Modulation of Plasmodium falciparum chaperones PfHsp70-1 and PfHsp70-x by small molecules

  • Authors: Cockburn, Ingrid Louise
  • Date: 2013
  • Subjects: Plasmodium falciparum Heat shock proteins Molecular chaperones Homeostasis Protein folding Malaria Antimalarials Escherichia coli
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:3887 , http://hdl.handle.net/10962/d1001747
  • Description: The heat shock proteins of ~ 70 kDa (Hsp70s) are a conserved group of molecular chaperones important in maintaining the protein homeostasis in cells, carrying out functions including refolding of misfolded or unfolded proteins. Hsp70s function in conjunction with a number of other proteins including Hsp40 cochaperones. Central to the regulation Hsp70 activity is the Hsp70 ATPase cycle, involving ATP hydrolysis by Hsp70, and stimulation of this ATP hydrolysis by Hsp40. PfHsp70-1, the major cytosolic Hsp70 in the malaria parasite, Plasmodium falciparum, and PfHsp70-x, a novel malarial Hsp70 recently found to be exported to the host cell cytosol during the erythrocytic stages of the P. falciparum lifecycle, are both thought to play important roles in the malaria parasite’s survival and virulence, and thus represent novel antimalarial targets. Modulation of the function of these proteins by small molecules could thus lead to the development of antimalarials with novel targets and mechanisms. In the present study, malarial Hsp70s (PfHsp70-1 and PfHsp70-x), human Hsp70 (HSPA1A), malarial Hsp40 (PfHsp40) and human Hsp40 (Hsj1a) were recombinantly produced in Escherichia coli. In a characterisation of the chaperone activity of recombinant PfHsp70-x, the protein was found to have a basal ATPase activity (15.7 nmol ATP/min/mg protein) comparable to that previously described for PfHsp70-1, and an aggregation suppression activity significantly higher than that of PfHsp70-1. In vitro assays were used to screen five compounds of interest (lapachol, bromo-β-lapachona and malonganenones A, B and C) belonging to two compound classes (1,4 naphthoquinones and prenylated alkaloids) for modulatory effects on PfHsp70-1, PfHsp70-x and HsHsp70. A wide range of effects by compounds on the chaperone activities of Hsp70s was observed, including differential effects by compounds on different Hsp70s despite high conservation (≥ 70 % sequence identity) between the Hsp70s. The five compounds were shown to interact with all three Hsp70s in in vitro binding studies. Differential modulation by compounds was observed between the Hsj1a-stimulated ATPase activities of different Hsp70s, suggestive of not only a high degree of specificity of compounds to chaperone systems, but also distinct interactions between different Hsp70s and Hjs1a. The effects of compounds on the survival of P. falciparum parasites as well as mammalian cells was assessed. Bromo-β-lapachona was found to have broad effects across all systems, modulating the chaperone activities of all three Hsp70s, and showing significant toxicity toward both P. falciparum parasites and mammalian cells in culture. Malonganenone A was found to modulate only the malarial Hsp70s, not human Hsp70, showing significant toxicity toward malarial parasites (IC₅₀ ~ 0.8 μM), and comparatively low toxicity toward mammalian cells, representing therefore a novel starting point for a new class of antimalarials potentially targeting a new antimalarial drug target, Hsp70.
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  • Date Issued: 2013

Why do learners and teachers experience problems with the concept of zero?

  • Authors: Jooste, Zonia
  • Date: 2012
  • Subjects: Numbers, Divisibility of -- Study and teaching (Primary) -- South Africa Numbers, Divisibility of -- Study and teaching (Secondary) -- South Africa Mathematics teachers -- Training of -- South Africa -- Eastern Cape Mathematics teachers -- Training of -- South Africa -- Western Cape Education, Primary -- Curricula -- South Africa Education, Secondary -- Curricula -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1906 , http://hdl.handle.net/10962/d1006764
  • Description: The controversy around the inclusion of zero in the number system has been widely documented. Influential mathematicians in various ancient cultures did not accept zero as a number. The idea of the empty set was too abstract and they could not conceptualise division by zero. Surprisingly, understanding of the concept is still a matter of concern today. In spite of expansive reports on and recommendations for developing conceptualisation of the concept, learners and teachers still experience problems similar to those that ancient mathematicians struggled with. The study was initiated by an observation of Grade 7 learners' inability to solve the problems 4 × 0 and 0 ÷ 7 effectively or at all. I investigated why Grade 3 to 6 learners and mathematics teachers on a BEd (in-service) course and an accredited ACE course experience problems with the concept of zero. I was especially interested in the understanding of multiplication and division by zero. I investigated teachers' knowledge of zero's characteristics as a number, the history of zero and how they teach the concept, in order to support my assumptions. The data production process was performed over a period of two years. It involved a multi-case opportunity sample approach embedded in the empirical field that formed the backdrop of my involvement as mathematics education specialist in schools in the Western and Eastern Cape. The interpretative orientation of the study allowed me to conduct inquiries that served to confirm or challenge my assumptions and enabled me to construct generalisations that depict learners' and teachers' knowledge construction. The qualitative data analysis informed the presentation and discussion of the findings. The single most important message conveyed to readers of this study is that the value of zero as a number, its importance in the number system, its properties and its behaviour in calculations, should not be underrated. Teaching of this abstract concept requires competent teachers who are able to mediate understanding in the most effective and innovative manner. Professional development programmes should orchestrate this competence and curriculum developers and textbook authors should acknowledge the significance of learning and teaching the concept of zero.
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  • Date Issued: 2012

An investigation of social computing

  • Authors: Schlenkrich, Lara
  • Date: 2009
  • Subjects: Online social networks , Online social networks -- Law and legislation , Interpersonal communication , Internet in education , Education -- Communication system , Education -- Data processing
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1149 , http://hdl.handle.net/10962/d1006194 , Online social networks , Online social networks -- Law and legislation , Interpersonal communication , Internet in education , Education -- Communication system , Education -- Data processing
  • Description: Social network sites have recently become extremely popular online destinations as they offer users easy ways to build and maintain their relationships with each other. Consequently, students, lecturers, teachers, parents and businesses are using these tools to communicate with each other in a fast and cost-effective manner. However, literature suggests that the full potential of social network sites has not yet been revealed since users are still battling to overcome the various negative characteristics surrounding these sites. A framework for appropriate use of these sites is needed so that users are able to overcome these negative aspects, allowing them to be more effective and use the sites successfully. The goal of this research is to construct a framework for perceived successful use of social computing tools in educational institutions. This framework will include critical success factors that need to be adopted by users in order to develop the positive aspects of social computing, while at the same time overcoming the disadvantages experienced by users. Factors for successful use were derived from the literature and consolidated into a theoretical framework in order to understand the factors that drive successful use of social network sites. Measures used to test successful use of social network sites were also derived from these sources and were included in the same theoretical framework; these measures allow users to evaluate the extent of perceived successful use of social network sites. This framework was tested empirically by means of a pilot study and online survey, and revised according to the results of the survey. The factors were identified using Cronbach alpha coefficients (in the pilot study) and exploratory factor analysis to confirm the reliability of the scales developed. Pearson product-moment correlation coefficient analysis, t-tests and Pearson Chi-Square tests were used to measure the relationships amongst the variables in the framework proposed in this research. The factors influencing perceived successful use of social network sites were identified by the empirical study as: • Privacy and Security Settings need to be enabled. These are split into: - Settings: content that users allow others to see - Viewers: people who are allowed onto a user's profile • It is necessary for users to practise Legal and Acceptable Activities when using social network sites • Suspect Information needs to be checked before sharing it with others • Personal and Professional Time needs to be separated to ensure that work is completed before social activities occur • Users need to practise Professional and Ethical Behaviour • Users need to have a Positive Attitude when using social network sites • Usability of sites affects their success. This includes: - technical capacity (broadband) - ease of use - functionality (range of features and functions) • Current and Controversial Issues need to be discussed on social network sites. The extent to which social network sites are being used successfully can be evaluated by the presence of the following measures: • Range of Content must be available to users. This includes: - Content displayed on profiles - Viewers able to visit profiles • Visitors Behaviour is monitored and no unwanted visitors are present users' profiles • Social Contracts found on sites are followed by users • Critical Thinking Skills and Accurate Information are displayed by users • Work is completed before social activities occur on sites • A Variety of Users is present on sites • Collaboration between people as well as variety of opinions exist on sites • Social Capital (well-being) is present after users have been on sites • Learning and Advising Skills are enhanced on sites. The framework developed provides users with a useful instrument to overcome the negative characteristics associated with social network sites. If used successfully, social network sites can offer lecturers and students a unique method to develop their relationship, creating a positive learning experience.
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  • Date Issued: 2009

Learning, governance and livelihoods : toward adaptive co-management under resource poor conditions in South Africa

  • Authors: Cundill, Georgina
  • Date: 2009
  • Subjects: Natural resources -- Co-management -- South Africa Rural poor -- South Africa Rural development -- South Africa Households -- Economic aspects -- South Africa Sustainable development -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4747 , http://hdl.handle.net/10962/d1006961
  • Description: Through collaborative monitoring and case study comparison, this thesis explores conceptual and methodological approaches to monitoring transitions toward adaptive co-management. In so doing, a number of knowledge gaps are addressed. Firstly, conceptual and methodological frameworks are developed for monitoring transitions toward adaptive co-management. Secondly, a conceptual and practical approach to monitoring the processes of collaboration and learning is developed and tested. Thirdly, a conceptual and practical approach to monitoring the governance outcomes of adaptive co-management is developed and tested. Fourthly, a conceptual and practical approach to monitoring the livelihood outcomes of adaptive co-management is developed and tested. Based on the outcomes from these four components of the study, this thesis explores the ways in which transitions toward adaptive co-management might be initiated under the resource poor conditions that characterise South Africa's communal areas. The four case studies explored in the study are described as 'resource poor' in terms of institutional capacity, ecosystem productivity and social vulnerability. From a resilience perspective these case studies can be described as being in the re-organisation phase of the adaptive cycle following multiple disturbances over time, largely due to South Africa's historical 'separate development' policies. Scholars have suggested that it is in this re-organisation phase that innovation and novelty might occur. The lens of social learning is applied to analyse collaborative processes within these contexts. Results indicate that the institutional innovation necessary for transitions toward adaptive co-management relies on careful facilitation by an 'honest broker'. Equally important is finding a balance between maintaining key individuals and knowledge holders within decision making networks, and preventing rigidity and vulnerability within communities of practice. The results point to an over simplification in the rhetoric that currently surrounds the learning outcomes of multi level networks. The governance outcomes of the initiatives are explored through the lenses of adaptive governance, social capital, adaptive capacity and self-organisation. Results indicate that under resource poor conditions creating the conditions that facilitate self-organisation is the major challenge facing transformations toward adaptive governance. Long term access to reliable information and capacity and financial support for adaptive management are key constraining variables. The livelihood outcomes of the initiatives are analysed through the lens of resilience and diversification. Results suggest that flexibility, rather than livelihood diversity, is the key livelihood strategy employed by households in situations were options are limited. Interventions that enhance opportunities for households to specialise in situ by actively dealing with structural constraints, such as access to markets and credit, is vital to encouraging innovation during transitions toward adaptive co-management. Based on the results from monitoring, this study identifies key focus areas that require a great deal more attention if transitions toward adaptive co-management are to be initiated under resource poor conditions.
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  • Date Issued: 2009

Composition and phenology of insect pests of Capsicum (Solanaceae) cultivated in the Makana District, Eastern Cape Province, South Africa

  • Authors: Hepburn, Colleen
  • Date: 2008
  • Subjects: Insects -- South Africa -- Eastern Cape -- Composition Insects -- South Africa -- Eastern Cape -- Phenology Agricultural pests -- South Africa -- Eastern Cape Peppers -- Diseases and pests -- South Africa -- Eastern Cape Solanaceae -- Diseases and pests -- South Africa -- Eastern Cape Insect pests -- South Africa -- Eastern Cape Insect pests -- Biological control -- South Africa -- Eastern Cape Insect pests -- Control -- Methods -- South Africa -- Eastern Cape Insects -- Host plants -- South Africa -- Eastern Cape Insect-plant relationships -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5656 , http://hdl.handle.net/10962/d1005339
  • Description: Capsicum baccatum var. pendulum was first grown in the Makana District in 2005. Extremely little was known about best practices for cultivation or the insects and diseases associated with the crop in this area. The study was conducted during the second year of production, November 2005 and November 2006, in an attempt to identify the composition and phenology of insects occurring on C. baccatum. In the more rural parts of the Eastern Cape, and more particularly in Grahamstown, there are very few industries. With the advent of this new agricultural venture, a processing factory has been opened in Grahamstown creating more than 600 seasonal jobs in the factory and 1000 seasonal jobs on farms for local people. This business enterprise has not only brought about the creation of jobs, but also training and skills development and empowerment, generating much-needed income in this area. An extensive literature review yielded limited information on insect pests associated with Capsicum. Data from a pilot sampling trial undertaken were statistically analyzed to establish the number of plants to be scouted per site and the most effective scouting techniques to use. Based on the data available and insects collected during the pilot sampling trial, a surveillance programme was designed. Five different types of monitoring traps were placed in each of the eight study sites. Collection of trap catches and scouting of fifteen individual plants per site was undertaken on a weekly basis over the 52-week study period. The most commonly occurring potential insect pests were African Bollworm Helicoverpa armigera (Hübner), False Codling Moth Thaumatotibia leucotreta (= Cryptophlebia leucotreta) (Meyrick), Mediterranean Fruit Fly Ceratitis capitata (Wiedemann) and several species of thrips. Population densities of these pests and their phenology on Capsicum were determined. Statistical analyses established the efficacy of the monitoring traps for each pest, tested for differences among and between study sites, calculated an estimate of the number of pods damaged and a measure of plant damage.The results show that the majority of damage caused to the Capsicum baccatum cropping system was due to Mediterranean Fruit Fly populations. It was established that, although African Bollworm and False Codling Moth were present during the study period, their numbers were negligible and only nominal damage was caused by these pests. Damage caused by thrips species was apparent but not quantifiable. Intervention strategies using an Integrated Pest Management approach, are discussed.
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  • Date Issued: 2008

Severe convective storm risk in the Eastern Cape Province of South Africa

  • Authors: Pyle, Desmond Mark
  • Date: 2007
  • Subjects: Storms -- South Africa -- Eastern Cape Natural disasters -- South Africa -- Eastern Cape Disasters -- South Africa -- Eastern Cape Disaster relief -- South Africa -- Eastern Cape -- Management Meteorology -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4853 , http://hdl.handle.net/10962/d1005529
  • Description: This study investigates the temporal, spatial and impact characteristics of severe convective storm hazard and risk in the Eastern Cape Province of South Africa. Using historical data on severe convective storms dating from 1897, patterns of the hazard threat and risk to various geographic populations were investigated. A conceptual framework that emphasises the combined role hazard and vulnerability play in defining risk was used for the study. A methodology for ranking the severity of the storms in the historical dataset, based on recorded damage/impact, was specifically developed for the study. It is intended that this methodology will have a potentially wider application and may be adapted to a range of hazard impact and risk studies in South Africa and internationally. The study was undertaken within the context of the South African Disaster Management Act of 2002. Findings of the study show that severe convective storms can occur throughout the province, but there are clearly demarcated areas of higher frequency and concentration. The impact of storms is particularly severe on impoverished and vulnerable rural populations in the eastern parts of the province, where there is an urgent need for building capacity in disaster risk management. A major outcome of the study is the production of a severe convective storm hazard/risk map of the Eastern Cape, which it is hoped will be of benefit to a number of stakeholders in the province, particularly disaster management, but also the South African Weather Service, agricultural organisations, development/planning authorities, educational authorities and risk insurers. It is hoped that this map and the study in general will assist in guiding the operational responses of the various authorities, especially in terms of those interventions aimed at disaster risk reduction in the Eastern Cape.
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  • Date Issued: 2007

A holistic approach to consumption analysis in the popular music market

  • Authors: Scheckter, Jonathan
  • Date: 2006
  • Subjects: Consumption (Economics) -- Moral and ethical aspects , Music trade -- South Africa , Popular music -- Economic aspects -- South Africa
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:981 , http://hdl.handle.net/10962/d1002715 , Consumption (Economics) -- Moral and ethical aspects , Music trade -- South Africa , Popular music -- Economic aspects -- South Africa
  • Description: This thesis seeks to gain a holistic understanding of consumption issues in the popular music market, such that it needs to account for the influence of 1) technological factors, 2) institutional factors, 3) cultural factors, and 4) an ontological aspect; as these are identified to be the most prominent aspects in the literature on the market. While there is a bourgeoning literature on the market, there has been little formal attempt to link such issues in a comprehensive fashion. The methodology applied provides a critique of the literature on specific consumption theories which have apparent pertinence to the music market. Each of the sociological, psychological, and economic theories (neoclassical and radical) is found to be too generalized to provide such an understanding, in that many issues concerning the music market would need to be eschewed if these theories were to be applied in an orthodox fashion. Moreover, the theories tend to point towards each other for the possibility of a credible, holistic consumption analysis. The most useful and all-encompassing consumption theory reviewed is the systems of provision approach advanced by Fine and Leopold (1993), in that the approach aims to be sensitive to the difference between commodities in terms of the economic and social processes and structures by which they become commodities, and thus it can allow one to consider adequately the four requirements identified above for a holistic understanding of the market. This approach is then applied to the western music market with the aim of 1) testing the approach identified, and 2) making a specific comment of the market. The market is found to be characterized historically by three distinct periods, each with distinct systems of provision (i.e. each with the four factors identified above relating to each other in a certain manner). It is proposed that preference formations in the final period identified have been institutionalized to a large extent, and there is a low probability of change occurring. The systems of provision approach is argued to be beneficial in highlighting which aspects of the existing consumption theories are relevant to the market at a point in time, and to what extent. Thus the richness of the approach stems from its ability to gain a holistic understanding, and to identify theoretical discussion topics, such as those concerning political economy. The approach is then applied to the South African music market, using the same historical methodology, in conjunction with current empirical evidence from the market. Doing this allows one to test the generality of the systems of provision approach, and to attempt to make a comment on the South African market. The techniques for obtaining empirical evidence are argued to be sound, but resource constraints prevented the research from reflecting a holistic view of the market. Nonetheless, a rich perspective is provided from interviews with prominent agents in the market, and thus the chapter is argued to provide the beginning of an understanding of preference formations in the South African music market, in which little research has been conducted (Stella, 2005).
  • Full Text:
  • Date Issued: 2006

Chemical studies of selected chromone derivatives

  • Authors: Nchinda, Aloysius Tchangwe
  • Date: 2002
  • Subjects: Heterocyclic compounds
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4434 , http://hdl.handle.net/10962/d1007442
  • Description: This investigation has been geared towards several aspects of chromone chemistry. Selected 2-(N,N-dimethylarnino)chromones have been synthesized via 2-hydroxyacetophenone boron difluoride complex intermediates, and potentiometric analysis of these compounds in ethanolwater has been used to determine the influence of substituents on their basicity. The pKa values have been found to lie within a narrow range (1.92 - 2.52), and the observed substituent effects have been rationalized with the aid of semi-empirical and ab initio molecular orbital calculations. An efficient route has been developed for the synthesis of the naturally-occurring chromone, "granulosin" [7,8-(methylenedioxy)-2-propylchromone], and several C-2 side chain analogues in good yields, by condensing 2'-hydroxy-3',4'-(methylenedioxy)acetophenone with a range of ethyl carboxylate esters. These compounds show significant cytotoxic activity against the brine shrimp, Artemia salina, and two of them, the 2-ethyl and 2-benzyl derivatives also show 100% activity as pesticides on Beet army worms (BAW). Another naturally-occurring chromone derivative, 5-hydroxy-2-isopropyl-7-methoxychromone, and four C-2 side chain analogues have been prepared in moderate yields. These compounds also show significant cytotoxic activity against the brine shrimp, Artemia salina, and it is apparent that the presence of the hydroxyl group at C-5 is critical for such activity. The electronimpact mass spectra of both series of chromone derivatives have been investigated, permitting the elucidation of characteristic fragmentation patterns. In work directed towards the synthesis of potential HIV -1 protease inhibitors, five novel chromone-containing analogues of the clinically useful drug, ritonavir, have been synthesized. The design strategy has involved the coupling of substituted chromone-2- carboxylic acids with a specially prepared, hydroxyethylene dipeptide isostere to afford ritonavir analogues containing chromone termini. An interactive docking procedure has been used to explore the docking of ritonavir and the novel chromone-containing analogues into ' the active site of the enzyme, and has indicated the capacity of the ritonavir analogues to form hydrogen-bonds with the HJV-l enzyme receptor. Various substituted cbromone-3-carbaldehydes, which have been synthesized from the corresponding o-hyclroxyacetophenones using Vilsmeier-Haack methodology, have been examined as substrates for Morita-Baylis-Hillman reactions, using 3-hyclroxyquinuclidine as the catalyst and arcylonitrile and methyl acrylate as the activated alkenes. Optimization of the reaction conditions has permitted efficient conversion of the cbromone-3-carbaldehydes to the Morita-Baylis-Hillman products and, in some cases, dimeric products, within 24 h. Heating of the Morita-Baylis-Hillman products, arising from reactions with methyl acrylate, at 80 ºC for 3 h in the presence of DABCO as catalyst, has been shown to effect transformation to the corresponding dimers in good yield.
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  • Date Issued: 2002

Evaluation of environmental education courses in Bophuthatswana colleges of education

  • Authors: Leketi, Makgau Peter
  • Date: 1993
  • Subjects: Environmental education -- South Africa -- Bophuthatswana Environmental education -- Study and teaching -- South Africa -- Bophuthatswana Environmental education -- Curricula -- South Africa -- Bophuthatswana
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1525 , http://hdl.handle.net/10962/d1003407
  • Description: This study evaluates Environmental Education courses in Bophuthatswana Colleges of Education. The semi-structured interviews with final year students, lecturers, rectors of colleges offering the courses, external examiners and the course co-ordinator at the Institute of Education at the University of Bophuthatswana (Unibo) are made. Written documents relating to Environmental Education courses, such as students' examination answer books, moderators' reports and minutes of meetings, are also used to evaluate the courses. Specifically, the aim of this study is to identify the strengths and the weaknesses of Environmental Education courses in Bophuthatswana Colleges of Education and this would present a contribution in the research field and also be useful in the further refinement of the courses. Strengths and weaknesses identified in this research are related to knowledge of Environmental Education and environmental issues, the syllabuses of the Environmental Education courses, the operation of the courses, the examining of the courses and the ethos and support of the colleges and the local university's Institute of Education. New insights are gained inter alia into the operation of Environmental Education courses in the Teacher Education programme in Bophuthatswana. An important contribution of the study is the application of the phenomenological paradigm, since it allows understanding of subjective experience as far as the operation of Environmental Education is concerned.
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  • Date Issued: 1993

Binary and ternary pyrotechnic systems containing manganese, molybdenum, barium peroxide and strontium peroxide

  • Authors: Drennan, Robin Lennox
  • Date: 1991
  • Subjects: Thermochemistry -- Research Thermal analysis -- Research Chemistry, Analytic -- Research Manganese Molybdenum
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4411 , http://hdl.handle.net/10962/d1006765
  • Description: Barium peroxide was selected as oxidant in a fundamental physico-chemical study of binary pyrotechnic systems on account of its apparently simple decomposition stoichiometry. With this selection, the choice of fuel was governed by the requirements of a self-sustaining reaction at combustion temperatures below the melting point of the platinum/rhodium thermocouples (∼1760°C) used for recording temperature-time profiles during burning, and at burning rates not exceeding the response of the sensors used to monitor combustion. Both manganese and molybdenum metal powders satisfied the above requirements. Strontium peroxide was also available as an oxidant and so the combustion of binary metal/oxidant systems using both fuels and both BaO₂ and SrO₂ oxidants was investigated. The Mn/BaO₂, MoBaO₂ and Mn/SrO₂ systems burnt over a wide range of compositions, but the range of ignitable compositions for the Mo/SrO₂ system was very limited. The linear burning rates, for all these systems, ranged from 2 to 12 mm s⁻¹ and burning rates were increased by the use of smaller particle-sizes of fuel and greater loading pressures. Inert additives generally decreased the burning rate. Temperature-time profiles were recorded for all the compositions which sustained combustion. Kinetic parameters were estimated from the shapes of these profiles using procedures developed by Hill et al and Boddington and Laye. Activation energies derived from the profiles were low (3 to 40 kJ mol⁻¹) and support suggestions that reactions at high temperatures are controlled by diffusion processes. Thermal analysis was used to identify the processes occurring in the four systems. The main exothermic events were observed to correspond approximately with the onset of oxidant decomposition. A pre-ignition reaction was tentatively identified in the Mn/BaO₂ system. Oxidation of the metal fuels was generally incomplete, probably because of the formation of protective layers of product. Activation energies, derived from thermal analysis results, were in the range of from 70 to 720 kJ mol⁻¹. Ternary systems containing either mixed fuels or mixed oxidants were also examined. No interactions hetween the fuels or between the oxidants were observed. Other techniques used included bomb calorimetry, measurement of thermal conductivity, X-ray powder diffraction, infrared spectroscopy and scanning electron microscopy.
  • Full Text:
  • Date Issued: 1991

The future of the past in South African schools : curriculum development, school leaving examinations and syllabus design and assessment in history : a comparative study

  • Authors: Gunn, Alan Howard
  • Date: 1990
  • Subjects: Education -- South Africa , Education -- South Africa -- History , Education -- South Africa -- Forecasting
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1375 , http://hdl.handle.net/10962/d1001441
  • Description: This is a two-part study dealing with the curriculum, school leaving examinations and History as a school subject in England and South Africa. Part One is a developmental study. Developments in the curriculum of both countries since the Second World War are traced. In England this period is characterised by a shift from a somewhat laissez faire approach of the authorities at Whitehall to the curriculum of individual schools to the prescription that seems inherent in the National Curriculum. The outstanding development in South Africa during this period has been the introduction of a system of differentiated education. In contrast to minor developments in the South African school leaving examination system, England has witnessed the consolidation of the two-tier GCE and CSE system into a single examination at 16+, the GCSE. In discussing developments in History as a school subject, one is struck by the growth of the "new history" in England (this is described in some detail) against the relative lack of development (at "official" syllabus level) in South Africa where the subject remains rooted in the "traditional", chronological, content-based approach. Part Two of this study compares the current situation in England and South Africa at both the macro (ie. curriculum and school leaving examination systems) and micro (ie. History as a subject in the curriculum) levels. At the macro level the curriculum and school leaving examination systems in both England and South Africa are contrasted and one notes an increasing trend towards centralization in both countries. At the micro level use is made of "official" syllabuses and examination papers to contrast the "new history" approach in England with the "traditional" approach in South Africa. In the conclusion two broad possibilities for curriculum reform in South Africa are considered: Broad reform across the curriculum on the one hand and reforms in History on the other
  • Full Text:
  • Date Issued: 1990

Traditional and modern law of procedure and evidence in the chief's courts of the Ciskei

  • Authors: Mqeke, Bangilizwe Richman
  • Date: 1986
  • Subjects: Customary law -- South Africa , Customary law -- South Africa -- Ciskei , Evidence (Law) -- South Africa , Procedure (Law) -- South Africa
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: vital:3687 , http://hdl.handle.net/10962/d1003202 , Customary law -- South Africa , Customary law -- South Africa -- Ciskei , Evidence (Law) -- South Africa , Procedure (Law) -- South Africa
  • Description: In this thesis it is intended to show, among other things, the evolution of the Ciskeian traditional African Court practice and procedure from the time of the advent of white rule up to the present day. In chapter two we show the manner in which the various Cape Governors tried to suppress the traditional court system and law by superimposing western type law and norms (repugnancy clause) on the unwilling African population. The case law discussed in chapter 3 clearly shows the problems that arose and which to a large extent, still arise in the application of the Chiefs' Civil Courts Rules. Non-compliance with these rules reveals the need both for the training of the personnel of these courts and reform of the rules governing the Chief's courts. The areas that need urgent attention have been identified and the necessary recommendations have been made.
  • Full Text:
  • Date Issued: 1986

'Rhodesians' in South Africa : a study of immigrants from Zimbabwe

  • Authors: Simon, Alan
  • Date: 1984
  • Subjects: Zimbabweans South Africa -- Foreign population Zimbabwe -- Emigration and immigration South Africa -- Emigration and immigration
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:3345 , http://hdl.handle.net/10962/d1005630
  • Description: Although most whites have remained in Zimbabwe after independence and not all who have emigrated came to South Africa, large numbers established themselves as an immigrant community in this country. The aim of this study is to "sociologically capture" this community's views about their past experiences in Rhodesia/Zimbabwe and their present experiences in South Africa. This is done by employing a generative methodological procedure whereby members of the target population themselves generated issues considered to be of importance to their previous and new situational contexts. As it was not possible to obtain a random sample of all Zimbabwean immigrants in South Africa, questionnaire data were collected from four separate categories of respondents. In addition, depth interviews were conducted and thus responses have been analysed both qualitatively and quantitatively. The findings demonstrate that for the most part, few "Zimbabweans" - whites who are reasonably accepting of the new socio-political order in independent Zimbabwe - have come to South Africa. Rather, most of the immigrants, whose views were canvassed in this research investigation, seem to be bitter "Rhodesians" who have been unable to accept change and integration and the consequent loss of white privilege in the new Zimbabwe. These recent immigrants have not found all things to their satisfaction in South Africa moreover, despite the similar socio-political structures in former Rhodesia and contemporary South Africa.
  • Full Text:
  • Date Issued: 1984

A teacher's perception of his professional role : a developmental study

  • Authors: Morwood, G E
  • Date: 1982
  • Subjects: Teachers -- Job satisfaction
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1341 , http://hdl.handle.net/10962/d1001407
  • Description: This then was the object of this study, to determine 1) whether there is a pattern of attitude change common to teachers; II) whether early experience brings about different patterns of change among teachers; lll) whether specific life crises and events bring about these changes; lV) whether changes in attitudes occur at different stages in the teacher's career (Introduction, p. 12)
  • Full Text:
  • Date Issued: 1982
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