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Knowledge management as a tool to enhance innovative thinking in an organisation

  • Authors: Kenqa, Bandile
  • Date: 2014
  • Subjects: Knowledge management Organizational learning
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10948/11026 , vital:26878
  • Description: The twenty-first century is an era where corporate and small businesses alike have to give way to what has been termed the ‘knowledge era’. Knowledge management is regarded as the most important factor in the mainstream of the business fraternity in ensuring sustainability within organisations. Because knowledge management is an integral part of managerial activity in a number of organisations, the broader economic environment and social life today, it is imperative that organisations must be knowledge-driven. Equally important are the associated knowledge management implementation strategies. Based on the literature study and the survey of the branch managerial teams in FNB branches in the Nelson Mandela Metropolitan in Port Elizabeth, it was concluded that FNB partly applied specified concepts to embrace an innovation culture in the organisation. The concepts specified included innovative competency, leadership initiative, customer engagement, staff engagement and personal desire, at both individual and FNB level. In order to attain the objective of the empirical study, survey results were evaluated in order to establish whether the above mentioned concepts were applied. A sample of fifty five (55) managerial members from fifteen (15) branches were surveyed. The responses obtained from the respondents were analysed and compared with the matters raised in the literature review. Leadership initiative appeared to be the most important critical factor in driving knowledge management culture in the organisation. However, it was established that personal desire, both at individual and FNB level, were misaligned to knowledge management. This implied that the organisation was not yielding full benefits from their employees in ensuring that management optimise on the employees’ skills, qualifications and expertise. Conclusions, research gaps and recommendations were formulated for the FNB’s promotion of innovative competency, leadership initiative, customer engagement, staff engagement and personal desire, both at individual and FNB levels. The empirical results were satisfactory and informative. Leadership initiative appeared to be the most critical factor in driving knowledge management culture in the organisation.
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  • Date Issued: 2014

Land redistribution and state decentralisation in South Africa

  • Authors: Jaricha, Desmond Tichaona
  • Date: 2014
  • Subjects: Land reform -- South Africa , Land tenure -- South Africa , Agriculture -- Economic aspects -- South Africa , Decentralization in government -- South Africa , Local government -- South Africa , South Africa -- Politics and government
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:3374 , http://hdl.handle.net/10962/d1013120
  • Description: South Africa is a new democracy that has had to deal with many historical remnants of apartheid. One of the main remnants has been land dispossession and massive inequalities along racial lines of access to land for agricultural purposes. In countering this, the post-apartheid state has pursued land redistribution programmes since the end of apartheid in 1994, as part of a broader land reform project. Simultaneously, post-apartheid South Africa has been marked by significant state restructuring notably a process of state de-centralisation including the positioning of municipalities as development agents. Amongst other goals, this is designed to democratise the state given the authoritarian and exclusive character of the apartheid state, and thereby to democratise development initiatives and programmes. Land redistribution and state decentralisation in South Africa are different political processes with their own specific dynamics. They have though become interlinked and intertwined but not necessarily in a coherent and integrated manner. Within broader global developments pertaining to state decentralisation and land redistribution, the thesis examines the complex relations between these two processes in South Africa. In particular, I analyse critically the decentralised character of the land redistribution programme in South Africa. In order to concretise and illustrate key themes and points, I discuss a particular land redistribution project called Masizakhe located in Makana Municipality in the Eastern Cape Province.
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  • Date Issued: 2014

Leadership effectiveness in local government : the case of Amathole District Municipality

  • Authors: Tshefu, Nolitha
  • Date: 2014
  • Subjects: Leadership -- South Africa -- Eastern Cape , Municipal government -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:8924 , http://hdl.handle.net/10948/d1021142
  • Description: Local government is a complex sphere of government that was established on the principles of deepening democracy and advancing developmental local government. This is premised on the fact that local government is highly legislated; furthermore it is the sphere that is the closest to the people. Local government has endured a lot of criticism ranging from lack of leadership, inexperienced and unqualified managers, lack of service delivery and the poor quality of the services provided. The critical question being asked in this research study is whether the current calibre of leadership is achieving the principles of local government. Councillors, by virtue of their establishment, were meant to be the voice of communities. Councillors have a supervisory role to play in the council, but the skills, capacities and experience of councillors are often lacking. The media reports daily on problems and crises called “challenges” facing municipalities. Government has acknowledged that there are challenges in local government. This raises the issue of cadre deployment, whether it assists government in achieving its developmental objectives. Cadre deployment is a strategy of the ruling party which was meant to bring the previously disadvantaged groups to a position of power. This was meant to try to balance the imbalances of the past. This research study argues that the high volume of dissatisfaction by communities may be aggravated by the non-effectiveness of the political bearers in the municipal councils. This study identifies a number of contributing factors to the challenge at hand, such as the deployment of people to council structures; requirement in terms of academic qualification; and lack of leadership. Furthermore, this study investigates what could be the problem with the cadre deployment strategy of the ruling party; asking whether the problem is with the strategy itself or with its implementation. This research study therefore seeks to evaluate the impact the political leaders have on local government, focusing on service delivery. The study will first outline the state of local government in South Africa; compare the design of SA local government to international and African countries as well as looking at the key variables that result in the lack of service delivery. The issue of woman empowerment will also be discussed, evaluating the role that the country up to local government has played in ensuring that the 50/50 representation is achieved. The conclusion from this research is that a framework for the selection of council candidates should be developed. The framework will outline the basic skills and qualification requirements. The recommendations include improvements in the processes of interacting with communities; enforcing the code of conduct; developing ways that the municipality can educate communities on government operations; improved community participation and increased accountability. The impact of the lack of leadership in councillors undermines the democratic principles of developmental local government.
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  • Date Issued: 2014

Learner perceptions on feedback received on performance tasks in mathematics in selected schools from the East London district in the Eastern Cape

  • Authors: Ngudle, N G
  • Date: 2014
  • Subjects: Mathematics -- Study and teaching -- South Africa , Effective teaching , Teacher effectiveness
  • Language: English
  • Type: Thesis , Masters , M Ed
  • Identifier: vital:16213 , http://hdl.handle.net/10353/d1016499 , Mathematics -- Study and teaching -- South Africa , Effective teaching , Teacher effectiveness
  • Description: Feedback has an important role to play in the performance of learners. This study looks to identify the challenges that the learners are faced with when the teachers provide them with feedback and the ways they would like like it to be used in order to see feedback assisting them in their learning and improve their performance. Feedback contributes a lot to assessment and has a close link with performance. The study used the qualitative approach to identify the challenges the learners experience when they receive the feedback from their teachers. The participants were sampled from grade 12 learners in the form of a focus group (seven to ten per school) and individual respondents. The method used semi-structured interviews and portfolio observations to collect the data from two high schools in East London (EL) district to look at the nature of the feedback provided to learners. The data was later analysed and interpreted. It has been identified that for both schools feedback conveyed certain messages to learners such motivation to do better, a need to do better and, lastly, affirmation that the learners are on the right track or they are neglected and left to figure out how to do the tasks. The study discovered that, according to Hattie and Timperley (2007)’ there are four levels of feedback. It was found that for the task level learners from school A mainly received oral feedback which was often seen as denigrating them; however, in school B learners received both the oral and written feedback. They felt that the feedback assisted them to understand the task at hand. They also saw this as a way of building up their confidence in all the tasks they come across. Secondly, in the process level, learners in school A did not report receiving feedback at this level but only oral feedback which does not show their mistakes step by step in the task, yet in school B they reported that they got feedback from their teacher individually to help them understand the task. Thirdly, for the self regulation level, in school A there was no data to confirm this. Regarding school B, learners were being assisted by the feedback they received from their teacher and this caused them to monitor their progress. The fourth and last level is the self or personal evaluation where in school A learners were not able to evaluate themselves because they did not receive written feedback, whereas in school B learners could do that freely referring to the written comments from their teacher. The research therefore concluded that in one of the schools the four levels that the study was looking at were not all addressed and thus no meaningful feedback was given. For school B the teacher gave them the feedback which has contributed a lot in their learning. The study recommends that feedback should not be used for right or wrong answers but it must also state clearly why the learner has obtained such mark or grade and what to do to correct the wrongs. Teachers should consider that learner errors also assist them to have a broader picture on what more they need to do in their subjects. It is also recommended that teachers should consider various strategies in giving feedback and the learners’ work has to be monitored timeously for the purpose of the learning process. Lastly, a good approach when feedback is provided is also important because it builds high self-esteem and develops the teacher-learner approach accordingly.
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  • Date Issued: 2014

Learning across projects in the African Development Bank

  • Authors: Mukuvari, Itai
  • Date: 2014
  • Subjects: Development banks , Economic development projects -- Africa , Banks and banking
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9226 , http://hdl.handle.net/10948/d1020974
  • Description: In this study, the focus will be on the possibility of a lack of learning during execution of projects, which could lead to poor performance in development effectiveness. This study will particularly look at the lessons learnt by individual road infrastructure projects and examine whether or not the learning points were embraced into other projects. The African Development Bank (AfDB) is an example of a multilateral donor agency that predominantly operates in Africa where there are some challenges with aid effectiveness as described earlier. The study is not an attempt to represent the use of lessons learnt and knowledge management in multilateral agencies in general; it is rather a start from which other researchers can build on in order to answer the question: What can donor agencies do to improve aid effectiveness in their project execution? The major contribution of this study is to encourage donor agencies to look at whether their organisations are learning from their different projects as they seek better development effectiveness.
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  • Date Issued: 2014

Learning pathways for improving rehabilitation practices in the mining industry : two cases of coal mining and borrow pits

  • Authors: Mphinyane, Andani
  • Date: 2014
  • Subjects: Coal mines and mining -- Environmental aspects -- South Africa , Environmental education -- South Africa , Sustainable development -- South Africa , Coal miners -- Education (Continuing education) -- South Africa , Borrow pits -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1989 , http://hdl.handle.net/10962/d1013271
  • Description: This research investigates cases of learning pathways for improving rehabilitation practices for key occupations in the mining industry. The study is set up as a partnership research programme between Rhodes University Environmental Learning Research Centre in South Africa, and the South African Qualification Authority, focussing on workplace learning and sustainability practices. This research programme seeks to understand the implications of the move to a knowledge society, with its emphasis on knowledge building over time, particularly in and for the environmental sector. The research was conducted as a qualitative case study that made use of semi-structured interviews, document analysis, visual photographs and observations as instruments of data gathering. Participants were sampled from two case studies, one in Limpopo province and the other one in Mpumalanga Province, who are directly involved in rehabilitation practices and related education and training programmes. The study makes use of career stories from the key occupations to provide insight into workplace learning pathways to inform education and training in the mining industry. A series of analytical statements captures some of the main findings on early education histories, career choices, learning pathway decisions and experiences related to sustainable practices and some complexities related to learning pathways. Environment and sustainability education is a cross-cutting issue in the NQF; and it pertains to the mining sector, especially to rehabilitation practices, which form the focus of this study as little is known about learning pathways associated with these sustainability practices. Insights from the study should enable the sector to enhance rehabilitation training for key occupations and at the same time encourage lifelong learning contributing towards sustainable development.
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  • Date Issued: 2014

Learning pathways of key occupations relevant to sustainable development in Makana Municipality

  • Authors: Mohanoe, Elma Nthabiseng
  • Date: 2014
  • Subjects: Makana Municipality , Sustainable development -- South Africa -- Grahamstown , Municipal government -- South Africa -- Grahamstown , Environmental education -- South Africa -- Grahamstown , Sustainable development -- Study and teaching -- South Africa -- Grahamstown , Vocational qualifications -- South Africa -- Grahamstown , Organizational learning -- South Africa -- Grahamstown , Educational equalization -- South Africa -- Grahamstown
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1990 , http://hdl.handle.net/10962/d1013322
  • Description: This study presents results to be contributed to the field of Environmental Education. It is a new arena for qualifications development and implementation in the South African Education and Training system. The study is located in the context of a joint research programme focusing on understanding issues of articulation and learning pathways development for sustainable development, established between the South African Qualifications Authority (SAQA) in partnership with Rhodes University, Environmental Learning Research Centre (ELRC). Phase 1 of the SAQA/ELRC research showed that researching workplace learning requires an understanding of learning pathways, if it is to be meaningful. It is for this reason that this research in phase 2 focuses specifically on learning pathways in the context of a local municipality in Makana. Using a case study research approach and qualitative data, this study investigated learning pathways for three occupational categories at different levels in the Makana Municipality: 1) key managerial occupations; 2) key supervisory occupations; and 3) key workers occupations relevant to sustainable development and how they are shaped and experienced. It also identified system and structural factors influencing articulation and access issues relevant to progress in learning pathways relevant to these key occupations. The study was designed using a case study research. Primarily, qualitative research techniques were employed to generate data, including observations, interviews and document analysis. The study used inductive, abductive and retroductive modes of inference to interpret and analyse data, using critical realist and systems perspectives. The findings on worker learning pathways show that there is a discrepancy between the Training Policy and the Environmental Training and Education Strategy of Makana Municipality. The issue of complexity in learning pathways and social structural factors such as inequality emerged as factors that strongly influenced learning pathways for workers. Learning pathways for workers involved in sustainable development practices hardly existed or simply did not exist. Interesting transitions associated with learning pathways such as from home, to work or no schooling in the case of the workers, showed a pattern of emergence. These showed that learning pathways are not accessible and equally available to everyone as can often erroneously be assumed. The findings on supervisor learning pathways show diverse complexities as well as related issues, when compared to the worker’s learning pathways. Issues such as overlapping of study and work emerge as influential to supervisor learning pathways. Lack of support is, however, an influencing factor, but in a different context compared to the workers, and mainly focuses on lack of bursaries, highlighting training policy issues. This aspect was found to also relate to lack of proper resources in order to enable them to learn and do their job better; an issue raised by the workers too. This challenge of lack of support in various forms posed a barrier to learning pathways. Findings related to the manager’s learning pathways show a noticeable gap between the workers, supervisors and managers. The manager’s generally have higher education qualifications related to sustainable development, and in certain cases managers have had exposure to international training related to sustainable development. Factors such as ample opportunities for learning, mentoring, association on professional bodies, and decision making powers influenced the manager’s learning pathways. It was also notable that while managers receive occupationally directed training, it is not necessarily sustainable development related. In theory, the results highlighted a need to understand systems as a whole and how their integration is important in influencing learning pathways. There were also underlying mechanisms and structures identified which needed to be unravelled and understood as these were found to influence learning pathways in this study. The study highlighted critical insights in understanding how learning pathways in a local municipality context (the case of Makana Municipality) are constructed by both systems and structural factors in the workplace, while also identifying ways in which agency of those engaged in learning for sustainable development in workplaces is enabled and /or constrained by such factors. It also showed the persistence of deep-seated inequalities of opportunity, especially for workers, to access and participate in sustainable development learning pathways.
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  • Date Issued: 2014

Legislating business rescue in South Africa: a critical evaluation

  • Authors: Darko-Mamphey, Dorothy
  • Date: 2014
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: vital:11121 , http://hdl.handle.net/10353/d1015244
  • Description: Social, political and economic changes in post-apartheid South Africa have generated the need for a major reform of the legislative regime governing companies in order to ensure that that regime is capable of addressing the challenges faced in domestic and international circles, and to also meet the demands of globalisation. 1 These developments include the change in culture from company liquidations to commercial renewal which caused the Department of Trade and Industry (DTI) to embark on drastic reforms of South Africa’s business rescue mechanism as part of the broader company law reform project. 2 The domestic and global environments have indeed changed drastically with corporate structures showing significant evolution.
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  • Date Issued: 2014

Lesson for spatial planning: post-1994 human settlement development in Nelson Mandela Bay Municipality

  • Authors: Nagar, Manesh
  • Date: 2014
  • Subjects: Land settlement -- South Africa -- Port Elizabeth -- 21st century Human geography -- South Africa -- Port Elizabeth -- 21st century , City planning -- South Africa -- Port Elizabeth
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/47992 , vital:40461
  • Description: Spatial planning of human settlements in South African cities, particularly during the apartheid era, has been extensively investigated. Urban development in Nelson Mandela Bay (formerly known as Port Elizabeth) resembled most other South African cities and towns based on the informants of the apartheid spatial planning policies since 1948. Consequent to the colonial style urban forms, the typical South African city and town (including Nelson Mandela Bay) faces numerous challenges to eradicate the effects of the apartheid legacies of functional and structural inefficiencies during the post-apartheid period. The research aims at examining the effectiveness of the post-apartheid residential policies with emphasis on the ‘Breaking New Ground’ policy in meeting the government’s expectations of restructuring and transformation of spatial urban planning after 1994, between 2004 and 2011 in Walmer Township. More specifically, the objectives of the study were to determine the extent of eradication of informal settlements in the study area; functional integration to investigate the extent of transformation of the study area in terms of functional integration; and to analyse the financially sustainability of the area, focused on the road network. The study was theoretically and conceptually influenced by colonial and postcolonial policies that impacted on urban development and spatial planning in the former colonial city. Methodologically, both quantitative and qualitative approaches were adopted in this investigation and in a case study. The data used for the study was obtained from both primary and secondary sources. Primary data were collected by using a remote sensing technique and via face-to-face interviews, where the interviewees were selected at random from within the identified suburb areas. Secondary data were obtained from scholarly articles and books, and government agencies and departments. The Chi-square test of dependence was used and this was to determine whether there was a relationship between variables. The results indicate that there are over 3,000 informal settlement dwellings in 2011, and very little eradication of informal settlement has been achieved. Although there are signs of heightened efforts of functional integration, it still remains limited. It was revealed that the local government has missed opportunities to promote the BNG policy objectives, particularly in the application of higher density developments and to promote cost-effective road networks. Based on the outcomes of the study, there are clear signs of the post-apartheid governments’ slow pace to transform human settlements. The post-apartheid housing policies, in particular the BNG policy, have not effectively transformed human settlements as envisaged.
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  • Date Issued: 2014

Lessons learnt from teachers during the first two years of the implemetation of a new foundation phase science curriculum

  • Authors: Plaatjies, Randall
  • Date: 2014
  • Subjects: Early childhood teachers -- South Africa , Science -- Study and teaching -- South Africa , Education, Elementary -- Curricula -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: http://hdl.handle.net/10948/3052 , vital:20391
  • Description: Foundation Phase (FP) teachers’ reluctance to teach science might stem from their weak science backgrounds that has resulted in their limited science content knowledge and their congruent science misconceptions and low self-efficacy with respect to science (Boyer, 2010; Luera, Moyer, & Everett, 2005). This study was guided by the following research question: What lessons, if any, can be learnt from a representative sample of FP teachers from six rural schools in the Libode Mega District with respect to the implementation of the Natural Sciences aspect of a new curriculum? The sample comprised 18 black, female, isiXhosa speaking teachers that represented six schools in the Libode Mega District (Libode, Ntlaza and Lusikisiki). A mixed-methods approach was used to collect qualitative and descriptive quantitative data using two structured questionnaires and semi-structured interviews in the form of focus groups.
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  • Date Issued: 2014

Levels of job satisfaction experienced by employees at crime intelligence, protection and security services in King William's Town

  • Authors: Sotana, Lizo
  • Date: 2014
  • Subjects: Job satisfaction -- South Africa -- Eastern Cape , Employee motivation -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MPA
  • Identifier: vital:8492 , http://hdl.handle.net/10948/d1021031
  • Description: This study evaluated the levels of job satisfaction experienced by warrant officers and constables at crime intelligence, protection and security services in King William’s Town. Job satisfaction is a personal appraisal of the job and the psychological experience at work. It is a measure of the general attitudes to work of a specific individual rather than of a collection of attitudes of an employee to a number of aspects related to his / her job. These include the work itself, workplace interactions and relationships, rewards and incentive schemes, and personal characteristics. The main purpose of this research paper was to identify certain factors impacting on job satisfaction. The literature study was completed on the factors that influence job satisfaction. The factors were work itself, promotion, pay, work group and working conditions. The literature study revealed which methods were used in selecting factors impacting on job satisfaction. The employees at Crime intelligence, protection and security services (CIPS), specifically the warrant officers and constables were asked questions in an empirical study and were asked to complete questionnaires. After the previous steps were completed, the findings of the study and the empirical study were made. The recommendations were also made to improve levels of job satisfaction experienced by warrant officers and constables at Constables at CIPS. The recommendations made were to assist the management assist the management as to what needs to be done to motivate members to achieve their objectives.
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  • Date Issued: 2014

Lignocellulosic waste degradation using enzyme synergy with commercially available enzymes and Clostridium cellulovorans XylanaseA and MannanaseA

  • Authors: Morrison, David Graham
  • Date: 2014
  • Subjects: Lignocellulose -- Biodegradation , Enzymes -- Biotechnology , Agricultural wastes as fuel , Polysaccharides -- Biotechnology , Sugar -- Inversion , Clostridium , Xylanases , Monomers
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4119 , http://hdl.handle.net/10962/d1013292
  • Description: The launch of national and international initiatives to reduce pollution, reliance on fossil fuels and increase the beneficiation of agricultural wastes has prompted research into sugar monomer production from lignocellulosic wastes. These sugars can subsequently be used in the production of biofuels and environmentally degradable plastics. This study investigated the use of synergistic combinations of commercial and pure enzymes to lower enzyme costs and loadings, while increasing enzyme activity in the hydrolysis of agricultural waste. Pineapple pomace was selected due to its current underutilisation and the substantial quantities of it produced annually, as a by-product of pineapple canning. One of the primary costs in beneficiating agricultural wastes, such as pineapple pomace, is the high cost of enzyme solutions used to generate reducing sugars. This can be lowered through the use of synergistic combinations of enzymes. Studies related to the inclusion of hemicellulose degrading enzymes with commercial enzyme solutions have been limited and investigation of these solutions in select combinations, together with pineapple pomace substrate, allows for novel research. The use of synergistic combinations of purified cellulosomal enzymes has previously been shown to be effective at releasing reducing sugars from agricultural wastes. For the present study, MannanaseA and XylanaseA from Clostridium cellulovorans were heterologously expressed in Escherichia coli BL21 (DE3) cells and purified with immobilised metal affinity chromatography. These enzymes, in addition to two commercially available enzyme solutions (Celluclast 1.5L® and Pectinex® 3XL), were assayed on defined polysaccharides that are present in pineapple pomace to determine their substrate specificities. The degree(s) of synergy and specific activities of selected combinations of these enzymes were tested under both simultaneous and sequential conditions. It was observed that several synergistic combinations of enzyme solutions in select ratios, such as C20P60X20 (20% cellulose, 60% pectinase and 20% xylanse), C20P40X40 (20% cellulose, 40% pectinase and 40% xylanase) and C20P80 (20% cellulose, 80% pectinase) with pineapple pomace could both decrease the protein loading, while raising the level of activity compared to individual enzyme solutions. The highest quantity of reducing sugars to protein weight used on pineapple pomace was recorded at 3, 9 and 18 hours with combinations of Pectinex® 3XL and Celluclast 1.5L®, but for 27 h it was combinations of both these commercial solutions with XynA. The contribution of XynA was significant as C20P60X20 displayed the second highest reducing sugar production of 1.521 mg/mL, at 36 h from 12.875 μg/mL of protein, which was the second lowest protein loading. It was also shown that certain enzyme combinations, such as Pectinex® 3XL, Celluclast 1.5L® and XynA, did not generate synergy when combined in solution at the initial stages of hydrolysis, and instead generated a form of competition called anti-synergy. This was due to Pectinex® 3XL which had anti-synergy relationships in select combinations with the other enzyme solutions assayed. It was also observed that the degree of synergy and specific activity for a combination changed over time. Some solutions displayed the highest levels of synergy at the commencement of hydrolysis, namely Celluclast 1.5L®, ManA and XynA. Other combinations exhibited the highest levels of synergy at the end of the assay period, such as Pectinex® 3XL and Celluclast 1.5L®. Whether greater synergy was generated at the start or end of hydrolysis was a function of the stability of the enzymes in solution and whether enzyme activity increased substrate accessibility or generated competition between enzymes in solution. Sequential synergy studies demonstrated an anti-synergy relationship between Pectinex® 3XL and XynA or ManA, as well as Pectinex® 3 XL and Celluclast 1.5L®. It was found that under sequential synergy conditions with Pectinex® 3 XL, XynA and ManA, that anti-synergy could be negated and high degrees of synergy attained when the enzymes were added in specific loading orders and not inhibited by the presence of other active enzymes. The importance of loading order was demonstrated under sequential synergy conditions when XynA was added before ManA followed by Pectinex® 3 XL, which increased the activity and synergy of the solution by 50%. This equates to a 60% increase in reducing sugar release from the same concentrations of enzymes and emphasises the importance of removing anti-synergy relationships from combinations of enzymes. It can be concluded that a C20P60X20 combination (based on activity) can both synergistically increase the reducing sugar production and lower the protein loading required for pineapple pomace hydrolysis. This study also highlights the importance of reducing anti-synergy in customised enzyme cocktails and how sequential synergy can demonstrate the order in which a lignocellulosic waste is degraded.
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  • Date Issued: 2014

Linking satellite and point micrometeorological data to estimate : distributed evapotranspiration modelling based on MODIS LAI, Penman-Monteith and functional convergence theory

  • Authors: Weideman, Craig Ivan
  • Date: 2014
  • Subjects: Plants -- Water requirements -- South Africa , Evaporation (Meteorology) -- Measurement , Satellite meteorology , Micrometeorology , Evapotranspiration , MODIS (Spectroradiometer)
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4779 , http://hdl.handle.net/10962/d1012078 , Plants -- Water requirements -- South Africa , Evaporation (Meteorology) -- Measurement , Satellite meteorology , Micrometeorology , Evapotranspiration , MODIS (Spectroradiometer)
  • Description: Recent advances in satellite sensor technology and micrometeorological instrumentation for water flux measurement, coupled with the expansion of automatic weather station networks that provide routine measurements of near-surface climate variables, present new opportunities for combining satellite and ground-based instrumentation to obtain distributed estimates of vegetation water use over wide areas in South Africa. In this study, a novel approach is tested, which uses satellite leaf area index (LAI) data retrieved by the Moderate Resolution Imaging Spectroradiometer (MODIS) to inform the FAO-56 Penman-Monteith equation for calculating reference evaporation (ET₀) of vegetation phenological activity. The model (ETMODIS) was validated at four sites in three different ecosystems across the country, including semi-arid savanna near Skukuza, mixed community grassland at Bellevue, near Pietermaritzburg, and Groenkop, a mixed evergreen indigenous forest near George, to determine potential for application over wider areas of the South African land surface towards meeting water resource management objectives. At Skukuza, evaluated against 170 days of flux data measured at a permanent eddy covariance (EC) flux tower in 2007, the model (ETMODIS) predicted 194.8 mm evapotranspiration relative to 148.9 mm measured fluxes, an overestimate of 31.7 %, (r² = 0.67). At an adjacent site, evaluated against flux data measured on two discrete periods of seven and eight days in February and May of 2005 using a large aperture scintillometer (SLS), ETMODIS predicted 27.4 mm and 6.7 mm evapotranspiration respectively, relative to measured fluxes of 32.5 and 8.2 mm, underestimates of 15.7 % and 18.3 % in each case (r² = 0.67 and 0.34, respectively). At Bellevue, evaluated against 235 days of evapotranspiration data measured using a surface layer scintillometer (SLS) in 2003, ETMODIS predicted 266.9 mm evapotranspiration relative to 460.2 mm measured fluxes, an underestimate of 42 % (r² = 0.67). At Groenkop, evaluated against data measured using a SLS over three discrete periods of four, seven and seven days in February, June and September/October respectively, ETMODIS predicted 9.7 mm, 10.3 mm and 17.0 mm evapotranspiration, relative to measured fluxes of 10.9 mm, 14.6 mm and 23. 9 mm, underestimates of 22.4 %, 11.2 % and 24.1 % in each case (r² = 0.98, 0.43 and 0.80, respectively). Total measured evapotranspiration exceeded total modelled evapotranspiration in all cases, with the exception of the flux tower site at Skukuza, where evapotranspiration was overestimated by ETMODIS by 31.7 % relative to measured (EC) values for the 170 days in 2007 where corresponding modelled and measured data were available. The most significant differences in measured versus predicted data were recorded at the Skukuza flux tower site in 2007 (31.7 % overestimate), and the Bellevue SLS flux site in 2003 (42 % underestimate); coefficients of determination, a measure of the extent to which modelled data are able to explain observed data at validation periods, with just two exceptions, were within a range of 0.67 – 0.98. Several sources of error and uncertainty were identified, relating predominantly to uncertainties in measured flux data used to evaluate ETMODIS, uncertainties in MODIS LAI submitted to ETMODIS, and uncertainties in ETMODIS itself, including model assumptions, and specific uncertainties relating to various inputs; further application of the model is required to test these uncertainties however, and establish confidence limits in performance. Nevertheless, the results of this study suggest that the technique is generally able to produce estimates of vegetation water use to within reasonably close approximations of measurements acquired using micrometeorological instruments, with r² values within the range of other peer-reviewed satellite remote sensing-based approaches.
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  • Date Issued: 2014

Liquidity linkages between the South African bond and equity markets

  • Authors: Magagula, Sifiso Charles
  • Date: 2014
  • Subjects: Financial crises , Global Financial Crisis, 2000-2008 , Financial risk management
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:9029 , http://hdl.handle.net/10948/d1020758
  • Description: Purpose - The study sought to examine the liquidity linkages between the South African bond and equity markets before the global financial crisis in 2008. Design/methodology/approach: The window of observation covered the period January 2000 to September 2008. In order to ensure robustness in the estimation, the study used foreign participation in the various markets as an additional measure of liquidity. The other liquidity measures considered in the study were volume and value traded of the various securities respectively. Time series modeling techniques were used in the estimation. An unrestricted vector autoregressive (VAR) model was estimated following which the standard innovation accounting techniques, impulse response functions and forecast error variance decompositions were applied. In the empirical analysis, the Granger-causality between the two markets was also used. Findings - While all the liquidity measures suggest the existence of linkages between the bond and equity markets, the direction of causality was found to be unidirectional from equity to the bond market using the volume and value measures. On the other hand, the foreign participation measure of liquidity suggests bi-directional causality. The study also provides evidence of long run relationship between key macroeconomic variables such as inflation, exchange rate and interest rate on one hand and liquidity in the debt and equity markets on the other. As empirical findings indicates that the linkages in liquidity between these markets positive, this consistent with studies conducted by Chordia et al (2003 & 2005) and Engsted and Tanggaard (2000) who found the relationship was a positive one. When volumes of trade and trade values, the study find evidence on uni-directional causality and strong bi-directional causality is evidence when foreign investor participation is used as a liquidity measure. In summary, there is a strong evidence liquidity linkage between the bond and equity market from the empirical results.
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  • Date Issued: 2014

Lived bodies: women’s experience of sex and gender

  • Authors: Lothian, Julie-Anne
  • Date: 2014
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/69445 , vital:29538
  • Description: This thesis will discuss the category of women, as a social group, through a phenomenological understanding of women’s subjective experiences. In arguing for the phenomenological perspective of the lived body, I show the ways in which other conceptions of women’s embodied subjectivity ultimately fail to provide comprehensive accounts of the lived experience of being a woman. I begin with an investigation into how biological determinists hypothesise women’s bodies as sexed. I then move to respond to Judith Butler’s poststructuralist feminist account of the gendered body. Finally, I argue that the embodied experience of being a woman is best explained as an ambiguous relationship between socially constructed expectations of femininity and biological materiality.
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  • Date Issued: 2014

Liver steatosis and insulin-resistance : reversal by Sutherlandia frutescens

  • Authors: Clarke, Stephen
  • Date: 2014
  • Subjects: Insulin resistance , Diabetes -- Treatment
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:10348 , http://hdl.handle.net/10948/d1020788
  • Description: Type 2 diabetes mellitus (T2DM) is rapidly emerging as one of the greatest global health issues of the 21st century. Insulin-resistance is a condition associated with T2DM and in the cell it is defined as the inadequate strength of insulin signalling from the insulin receptor downstream to the final substrates of insulin action involved in multiple metabolic, gene expression, and mitogenic aspects of cellular function. To investigate the potential mechanisms involved in the development of insulin-resistance, two in vitro liver cell models were established using palmitate or a combination of insulin and fructose as inducers. The development of insulin-resistance was determined via the capacity of the hepatocytes to maintain normal glucose metabolism functionality by measuring hepatic gluconeogenesis and glycogenolysis. It was established that the treatments induced the development of insulinresistance after 24 hours chronic exposure. Previous studies have investigated the potential of Sutherlandia frutescens extracts as therapeutic agents for insulin-resistance. The aim of this study was thus to investigate the ability of a hot aqueous extract of S. frutescens to reverse the insulin-resistant state, via measuring gluconeogenesis and glycogenolysis, the associated changes in cellular physiology (lipid accumulation, oxidative stress, and acetyl- CoA levels), and changes in mRNA expression. The results showed that S. frutescens had a significant effect on reversing the insulin-resistant state in both models of insulin-resistance. Furthermore, S. frutescens was capable of reducing lipid accumulation in the form of triacylglycerol in the high insulin/fructose model, while this was unaffected in the palmitate model. However, S. frutescens did reduce the accumulation of diacylglycerol in the palmitate model. Oxidative stress, seen to be associated with the insulin-resistant state, was successfully treated using the extract, as indicated by a reduction in reactive oxygen species. However no change was seen in the nitric oxide levels, in either model. Interestingly, although S. frutescens had no effect on the level of acetyl-CoA in the insulin/fructose model, it was found to increase this in the palmitate model. It is suggested that this may be due to increased β-oxidation and metabolic activity induced by the extract. The analysis of mRNA expression gave some insight into possible mechanisms by which insulin-resistance develops, although the results were inconclusive due to high variability in samples and the possibility of the RNA being compromised. Future studies will address this issue. The results of this study reflect different proposed clinical causes of insulin-resistance through the responses seen in the two cell models. These indicate that liver steatosis and insulin-resistance are induced by high palmitate as well as high insulin and fructose levels, and reversed by S. frutescens. Therefore the potential of S. frutescens to be used as a therapeutic agent in the treatment of insulin-resistance is indicated by this study.
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  • Date Issued: 2014

Local economic development in former homeland areas since 1994

  • Authors: Dasheka, Xolile Elson
  • Date: 2014
  • Subjects: Economic development -- South Africa -- Mangaung , Social status -- South Africa -- Mangaung , Homelands (South Africa)
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10948/3275 , vital:20419
  • Description: This study seeks to focus on the extent to which the newly formed Mangaung Metropolitan Municipality (MMM) in the Free State Province of South Africa has been able to close the socio-economic gap between the former homelands’ socio economic status and the current MMM such that the local development in former homeland areas post 1994 is scruitinised with the MMM serving as a unit of study for the scrutiny. A brief history of the three towns that form the Mangaung Metro Police such as Bloemfontein, Botshabelo and Thaba Nchu, the population statistics and economic sectors contributing to its economic environment will be provided. The study will also look into the historical background of Local Economic Development and practices in South Africa.
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  • Date Issued: 2014

Local economic development projects in the Amathole District Municipality

  • Authors: Boqwana, Nyameka Patience
  • Date: 2014
  • Subjects: Economic development projects -- South Africa -- Amathole District Municipality -- Evaluation , Community development -- South Africa -- Amathole District Municipality
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:9181 , http://hdl.handle.net/10948/d1020165
  • Description: The global economy has been reeling from the continued effects of the economic crisis since 2007. A range of approaches to economic recovery have been followed, ranging from financial bailout during the 2007/08 financial crisis, to austerity measures in the most recent 2011/12 sovereign debt crisis, but each with limited success. South Africa has similarly experienced significant shockwaves from the meltdown. The South African economy officially entered into recession in the second quarter of 2009. The economy was quick to emerge from economic recession by the first quarter of 2010, but has been on a bumpy path of recovery since. Moreover, economic recovery has been thwarted by the ensuing sovereign debt crisis in the Euro. South Africa is characterised by inequitable growth and development, a high incidence of poverty, a relatively underdeveloped economic base, low levels of skills development and low levels of access to basic services and infrastructure. LED has had a difficult birth in South Africa with regards to accomplishing its objectives of job creation and poverty alleviation. In an attempt to address these problems, the Amathole District Municipality has implemented a number of local economic development projects within the area aimed at improving the wellbeing of communities through the creation of job opportunities and sustainable livelihoods. The study is intended to assist the municipality to identify and address challenges that affect the successful implementation of LED projects. The following research aims to identify and assess the impacts that these projects have had on beneficiaries and the district as a whole. Furthermore the research aims to identify project successes as well as highlight shortcomings in order to enhance the economic impact of these projects in the future.
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  • Date Issued: 2014

Local government food security strategies: the Qamata Irrigation Scheme

  • Authors: Libala, Phumlani
  • Date: 2014
  • Subjects: Food security -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape , Agricultural development projects -- South Africa -- Eastern Cape , Irrigation projects -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10948/2919 , vital:20363
  • Description: Many households in South Africa are exposed to extreme food insecurity that threatens their livelihoods. Authorities in the local sphere of government have employed food security strategies to curb the trail of food insecurity that prevails in many rural households. However, high levels of food insecurity in many households in across the country, especially those living in rural areas like Qamata Village, are noteworthy. Contributing factors to this problem are attributed to local government’s inability to successfully stimulate agricultural production in the face of climate change. The research aimed at assessing the impact of Qamata Irrigation Scheme intervention programmes or strategies in Qamata Village. It was discovered that livelihoods of many households in Qamata Village rely heavily on agricultural production to access food. Limited government support, poor planning and failure to invest on climate change adaptation strategies were identified as serious impediments in the implementation of food security strategies. Due to the enormity of the problem and extensive nature of local government, this study focussed on the Qamata Irrigation Scheme, in the Qamata Village within Chris Hani District Municipality. For the purposes of this study, qualitative research methods were used to gather an in-depth understanding and verification of the problem. Research tools used were mainly semi structured interviews and focus group discussions. Interviews were conducted with farmers in the Qamata Irrigation Scheme and focus group discussion were held with dry land farming households in the Qamata Village and representatives from the CHDM. Findings of the study revealed that the decline in agricultural production due to climate changes has not only fuelled food insecurity for dry land farming households but put these households in an economically disadvantaged position. This was a major concern for this research especially with agricultural production being identified as a livelihood strategy for many households in the Qamata Village.
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  • Date Issued: 2014
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