Quality of work life and job embeddedness as predictors of turnover intentions among academic staff at selected Universities in the Eastern cape province of South Africa
- Authors: Tendai , Tichangwa
- Date: 2019
- Subjects: Employee retention Organizational behavior Work -- Psychological aspects
- Language: English
- Type: Thesis , Doctoral , D.Com (Industrial Psychology)
- Identifier: http://hdl.handle.net/10353/19153 , vital:39873
- Description: Rapid higher education change in South Africa has adversely affected academics job experiences, resulting in high academic staff turnover. Despite the extant literature on the impact of higher education change, few studies have assessed how higher education change has influenced academics‟ quality of work life (QWL), job embeddedness (JE) and intention to quit (ITQ). This study investigated academic staff QWL and JE as predictors of their ITQ. A sample of 250 teaching staff (n = 250) was selected from two universities in the Eastern Cape province of South Africa using quota sampling. Data were gathered using questionnaires and analysed using descriptive (frequency distributions and measures of central tendency and variability) and inferential (Pearson correlation, significance testing and regression analysis) statistical methods. The findings confirmed the hypothesised significant negative relationships of QWL and JE with ITQ. Partial evidence suggested that QWL and JE combined explained significantly more ITQ variance than both variables did separately. JE did not moderate the QWL-ITQ association, but explained substantially greater variance in ITQ than QWL did. The sample registered high QWL and moderate JE and ITQ levels. Acceptable instrument validity and reliability were reported. The findings suggest that intrainstitutional factors somewhat mitigate the adverse effects of higher education change on academics‟ QWL, JE and ITQ and a need to enhance JE aspects, in particular, to reduce academic staff turnover intentions and behaviour. Recommendations are offered for future policy, research and practice.
- Full Text:
- Date Issued: 2019
- Authors: Tendai , Tichangwa
- Date: 2019
- Subjects: Employee retention Organizational behavior Work -- Psychological aspects
- Language: English
- Type: Thesis , Doctoral , D.Com (Industrial Psychology)
- Identifier: http://hdl.handle.net/10353/19153 , vital:39873
- Description: Rapid higher education change in South Africa has adversely affected academics job experiences, resulting in high academic staff turnover. Despite the extant literature on the impact of higher education change, few studies have assessed how higher education change has influenced academics‟ quality of work life (QWL), job embeddedness (JE) and intention to quit (ITQ). This study investigated academic staff QWL and JE as predictors of their ITQ. A sample of 250 teaching staff (n = 250) was selected from two universities in the Eastern Cape province of South Africa using quota sampling. Data were gathered using questionnaires and analysed using descriptive (frequency distributions and measures of central tendency and variability) and inferential (Pearson correlation, significance testing and regression analysis) statistical methods. The findings confirmed the hypothesised significant negative relationships of QWL and JE with ITQ. Partial evidence suggested that QWL and JE combined explained significantly more ITQ variance than both variables did separately. JE did not moderate the QWL-ITQ association, but explained substantially greater variance in ITQ than QWL did. The sample registered high QWL and moderate JE and ITQ levels. Acceptable instrument validity and reliability were reported. The findings suggest that intrainstitutional factors somewhat mitigate the adverse effects of higher education change on academics‟ QWL, JE and ITQ and a need to enhance JE aspects, in particular, to reduce academic staff turnover intentions and behaviour. Recommendations are offered for future policy, research and practice.
- Full Text:
- Date Issued: 2019
Evaluation of groundwater potential using neotectonics and geophysics in the context of post Karoo tectonic framework around Fort Beaufort and Smithfield, Eastern Cape, South Africa
- Authors: Ndlovu, Nkosilathi
- Date: 2017
- Subjects: Neotectonics -- South Africa -- Eastern Cape Groundwater -- South Africa -- Eastern Cape Geophysical surveys -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/12687 , vital:39299
- Description: Geological and geophysical methods were used to investigate the Karoo area extending from longitudes 25.50 E to 27.50 E and latitudes 300 S to 330 S in South Africa, particularly Fort Beaufort, Aliwal North, Venterstad and Smithfield. The geology of the area is dominated by the upper Beaufort Group (Adelaide Subgroup) with an extensive network of dolerite sills and dykes that intruded the sedimentary sequence. A relationship between neotectonics, post-Karoo tectonics, groundwater and lithology was investigated to locate suitable groundwater potential sites. Apart from studying the role of neotectonics and the post Karoo tectonics, this research aims at generating groundwater targets to alleviate water shortages mainly for farming and livestock, and prove that neotectonics is still active. Methodologies adopted for obtaining these results included a comprehensive literature review, thin section analysis, scanning electron microscopy, geophysical investigation (magnetic, gravity, and vertical electrical sounding), and the application of Geographical Information Systems (GIS) and remote sensing. Twenty samples were collected at various locations within the study area and were analyzed using the petrographic microscope while others were analyzed with the Scanning Electron Microscopic (SEM) combined with an Energy dispersive x-ray spectrometry. The results show that the rocks are fractured, porous and have variable mineralogy (presence of heavy minerals) within the rocks. The use of Geographical Information Systems (GIS) and remote sensing in geological surveys, especially hydrogeology, has gained momentum over the past few years. This research is no exception as ArcMap software was used to create a map of seismic epicentres of the Eastern Cape Province. From the map it can be observed that seismicity still occurs and thus leading to the notion of neotectonics being active. Lineaments were also automatically extracted using the ENVI 5.1 and Geomatica 2013 software. Lineaments are zones of weakness in the subsurface of the Earth and are very important in locating groundwater potential sites. Geophysical techniques are essential and highly accurate for groundwater studies. Gravity and magnetic techniques were applied on data which was supplied as grids. Analysis using Geosoft Oasis 8.3 revealed extensive lineaments and ring like patterns and these were inferred to be dolerite intrusions (sills and dykes). The morphology of the intrusions help in identifying possible groundwater potential zones and thus they should be investigated. Vertical electrical sounding (VES) technique using the Schlumberger array was carried out at three sites (Fort Beaufort fracture which is possibly related to Quaternary surface uplift of the Amatole-Swaziland axis, splay of the Fort Beaufort fracture and at a site which showed high groundwater potential) to explore subsurface layering. IP2win (lite), 1-D modelling software was used to model the apparent resistivity data to obtain the geoelectric parameters of the subsurface (thickness and resistivity). The VES results are consistent with fractured rocks that aid groundwater movement. The VES data for the three sites was further modelled by the RES2DINV software and this shows low resistivity values associated with loose, water saturated top sandy soil and higher resistivity values associated with sedimentary sequences and dolerite. Moreover, potential sites for citing wells are predicted to be between 79.5 and 128 m on the profile. Further neotectonic studies need to be done, especially on the quaternary sediments as they would have more neotectonic evidence. The use of geophysical techniques for groundwater search need to be intensified, with more emphasis being put to the sedimentary sequences bordered by dolerite intrusions and fractured zones.
- Full Text:
- Date Issued: 2017
- Authors: Ndlovu, Nkosilathi
- Date: 2017
- Subjects: Neotectonics -- South Africa -- Eastern Cape Groundwater -- South Africa -- Eastern Cape Geophysical surveys -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/12687 , vital:39299
- Description: Geological and geophysical methods were used to investigate the Karoo area extending from longitudes 25.50 E to 27.50 E and latitudes 300 S to 330 S in South Africa, particularly Fort Beaufort, Aliwal North, Venterstad and Smithfield. The geology of the area is dominated by the upper Beaufort Group (Adelaide Subgroup) with an extensive network of dolerite sills and dykes that intruded the sedimentary sequence. A relationship between neotectonics, post-Karoo tectonics, groundwater and lithology was investigated to locate suitable groundwater potential sites. Apart from studying the role of neotectonics and the post Karoo tectonics, this research aims at generating groundwater targets to alleviate water shortages mainly for farming and livestock, and prove that neotectonics is still active. Methodologies adopted for obtaining these results included a comprehensive literature review, thin section analysis, scanning electron microscopy, geophysical investigation (magnetic, gravity, and vertical electrical sounding), and the application of Geographical Information Systems (GIS) and remote sensing. Twenty samples were collected at various locations within the study area and were analyzed using the petrographic microscope while others were analyzed with the Scanning Electron Microscopic (SEM) combined with an Energy dispersive x-ray spectrometry. The results show that the rocks are fractured, porous and have variable mineralogy (presence of heavy minerals) within the rocks. The use of Geographical Information Systems (GIS) and remote sensing in geological surveys, especially hydrogeology, has gained momentum over the past few years. This research is no exception as ArcMap software was used to create a map of seismic epicentres of the Eastern Cape Province. From the map it can be observed that seismicity still occurs and thus leading to the notion of neotectonics being active. Lineaments were also automatically extracted using the ENVI 5.1 and Geomatica 2013 software. Lineaments are zones of weakness in the subsurface of the Earth and are very important in locating groundwater potential sites. Geophysical techniques are essential and highly accurate for groundwater studies. Gravity and magnetic techniques were applied on data which was supplied as grids. Analysis using Geosoft Oasis 8.3 revealed extensive lineaments and ring like patterns and these were inferred to be dolerite intrusions (sills and dykes). The morphology of the intrusions help in identifying possible groundwater potential zones and thus they should be investigated. Vertical electrical sounding (VES) technique using the Schlumberger array was carried out at three sites (Fort Beaufort fracture which is possibly related to Quaternary surface uplift of the Amatole-Swaziland axis, splay of the Fort Beaufort fracture and at a site which showed high groundwater potential) to explore subsurface layering. IP2win (lite), 1-D modelling software was used to model the apparent resistivity data to obtain the geoelectric parameters of the subsurface (thickness and resistivity). The VES results are consistent with fractured rocks that aid groundwater movement. The VES data for the three sites was further modelled by the RES2DINV software and this shows low resistivity values associated with loose, water saturated top sandy soil and higher resistivity values associated with sedimentary sequences and dolerite. Moreover, potential sites for citing wells are predicted to be between 79.5 and 128 m on the profile. Further neotectonic studies need to be done, especially on the quaternary sediments as they would have more neotectonic evidence. The use of geophysical techniques for groundwater search need to be intensified, with more emphasis being put to the sedimentary sequences bordered by dolerite intrusions and fractured zones.
- Full Text:
- Date Issued: 2017
The collapse of the Zimbabwe currency and its soci-economic consequences on the middle class : the case of Msasa Park Suburb in Harare
- Authors: Mambiravana, Tafadzwa
- Date: 2017
- Subjects: Devaluation of currency -- Zimbabwe Currency crises -- Zimbabwe Zimbabwe -- Economic conditions
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/8375 , vital:32401
- Description: Currency crashing is one of the recurring problems in emerging economies. The crashes are as a result of the following factors; poor government policies, fiscal imbalances, trade deficits, higher inflations, monetary policies, and liquidity shortage among others. The crashing of currencies poses socio-economic problems that are devastating to different classes of people. To this end, this study sought to investigate the social consequences of currency crash to the middle class in Zimbabwe with a particular focus on the case of Msasa Park suburb in Harare. The study sought to investigate how the middle class households adapted to the situation induced by the crash of the Zimbabwean dollar, to examine how the currency crisis in Zimbabwe affected consumption patterns of the middle class at a household level and to identify the effects of currency crashes to the middle class’ national feeling and identity. The study utilized a qualitative research method in the form of in-depth interviews and focus group discussions. The process was made possible through the use of purposive sampling and quota sampling to generate the targeted participants of the study. The findings of the study have shown that the crash of the Zimbabwean dollar resulted in massive retrenchments, dwindling work opportunities, shrinkages in salaries and wages of employees particularly the middle class. This led to the rampant growth of the informal sector whereby people ended up engaging into extra economic activities outside their professions so as to supplement their incomes. Moreover, the study has shown that some middle class households began to cut out luxurious goods and prioritize basics. As such, their consumption patterns began to change in that their daily meals were reduced. The main reason given by the participants were that groceries were no longer available in shops. Resultantly, the majority of the participants said that they had to either grow their own food or import it from neighboring countries such as Botswana, Zambia and South Africa. In addition, the study yields that crash of the Zimbabwean dollar exacerbated migration of the working class to other countries. Last but not least, the study has shown that the crashing of the Zimbabwean dollar had effects on the class identity of the middle class in that the majority of them completely lost their status since they were experiencing downward mobility.
- Full Text:
- Date Issued: 2017
- Authors: Mambiravana, Tafadzwa
- Date: 2017
- Subjects: Devaluation of currency -- Zimbabwe Currency crises -- Zimbabwe Zimbabwe -- Economic conditions
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/8375 , vital:32401
- Description: Currency crashing is one of the recurring problems in emerging economies. The crashes are as a result of the following factors; poor government policies, fiscal imbalances, trade deficits, higher inflations, monetary policies, and liquidity shortage among others. The crashing of currencies poses socio-economic problems that are devastating to different classes of people. To this end, this study sought to investigate the social consequences of currency crash to the middle class in Zimbabwe with a particular focus on the case of Msasa Park suburb in Harare. The study sought to investigate how the middle class households adapted to the situation induced by the crash of the Zimbabwean dollar, to examine how the currency crisis in Zimbabwe affected consumption patterns of the middle class at a household level and to identify the effects of currency crashes to the middle class’ national feeling and identity. The study utilized a qualitative research method in the form of in-depth interviews and focus group discussions. The process was made possible through the use of purposive sampling and quota sampling to generate the targeted participants of the study. The findings of the study have shown that the crash of the Zimbabwean dollar resulted in massive retrenchments, dwindling work opportunities, shrinkages in salaries and wages of employees particularly the middle class. This led to the rampant growth of the informal sector whereby people ended up engaging into extra economic activities outside their professions so as to supplement their incomes. Moreover, the study has shown that some middle class households began to cut out luxurious goods and prioritize basics. As such, their consumption patterns began to change in that their daily meals were reduced. The main reason given by the participants were that groceries were no longer available in shops. Resultantly, the majority of the participants said that they had to either grow their own food or import it from neighboring countries such as Botswana, Zambia and South Africa. In addition, the study yields that crash of the Zimbabwean dollar exacerbated migration of the working class to other countries. Last but not least, the study has shown that the crashing of the Zimbabwean dollar had effects on the class identity of the middle class in that the majority of them completely lost their status since they were experiencing downward mobility.
- Full Text:
- Date Issued: 2017
The use of strategy tools in the non-profit sector
- Authors: Mawila, Melba Hlulani
- Date: 2017
- Subjects: Nonprofit organizations -- South Africa -- Management Strategic planning , Social entrepreneurship
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/45453 , vital:38618
- Description: This study undertook to explore the use of strategy tools in the NPO sector and also to determine if there are any differences in the use of tools between social enterprises and traditional NPOs. This was achieved by a Qualitative research methodology, where semi-structured interviews were subsequently conducted to answer the set research questions. The findings of the study indicated that NPOs use a combination of conceptual, material and other strategy tools during their strategizing activities. The findings also suggest that strategy practitioners use strategy tools eclectically by adapting them for their specific context. Lastly, the findings revealed that there are no significant differences in the use of strategy tools between social enterprises and traditional NPOs. The level and pace of change in the business environment has been steadily increasing during the past decades. However, the collapse of the financial markets in 2008/2009 intensified the impact of this change for many organisations. Change impacts organisations in a number of ways. The impact is, amongst others, mostly felt by Non-profit organisations (NPOs). Unlike for-profit organisations, NPOs rely heavily on external funders to fulfil their mission and sustain their organisations. On the other hand, organisations now have to reduce their corporate social responsibility budgets, international funders and governments have to re-direct their funds and individual funders have to tighten their belts.
- Full Text:
- Date Issued: 2017
- Authors: Mawila, Melba Hlulani
- Date: 2017
- Subjects: Nonprofit organizations -- South Africa -- Management Strategic planning , Social entrepreneurship
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/45453 , vital:38618
- Description: This study undertook to explore the use of strategy tools in the NPO sector and also to determine if there are any differences in the use of tools between social enterprises and traditional NPOs. This was achieved by a Qualitative research methodology, where semi-structured interviews were subsequently conducted to answer the set research questions. The findings of the study indicated that NPOs use a combination of conceptual, material and other strategy tools during their strategizing activities. The findings also suggest that strategy practitioners use strategy tools eclectically by adapting them for their specific context. Lastly, the findings revealed that there are no significant differences in the use of strategy tools between social enterprises and traditional NPOs. The level and pace of change in the business environment has been steadily increasing during the past decades. However, the collapse of the financial markets in 2008/2009 intensified the impact of this change for many organisations. Change impacts organisations in a number of ways. The impact is, amongst others, mostly felt by Non-profit organisations (NPOs). Unlike for-profit organisations, NPOs rely heavily on external funders to fulfil their mission and sustain their organisations. On the other hand, organisations now have to reduce their corporate social responsibility budgets, international funders and governments have to re-direct their funds and individual funders have to tighten their belts.
- Full Text:
- Date Issued: 2017
Error analysis in a learner corpus : a study of errors amongst Grade 12 Oshiwambo speaking learners of English in northern Namibia
- Nghikembua, Annelie Ndapanda
- Authors: Nghikembua, Annelie Ndapanda
- Date: 2015
- Subjects: Corpora (Linguistics) , Language and languages -- Study and teaching -- Error analysis , English language -- Study and teaching (Secondary) -- Namibia -- Oshana , Second language acquisition , Contrastive linguistics
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2386 , http://hdl.handle.net/10962/d1018911
- Description: High failure rates in English as a second language at secondary school level have become a concern in the Namibian education sector. From 2005 until 2013, the overall performance of the grade 12 learners in English as a second language on Ordinary level in the Oshana region was unsatisfactory. In fact, only a minority (18.52 percent) of the grade 12 learners obtained a grading in the range of A to D in comparison to the majority (81.48 percent) of learners who obtained a grading of E to U. The poor performance was attributed to: poor sentence structure, syllabification and spelling (Directorate of National Examination and Assessment, 2007-2010). The causes of these low performance rates however, were not scientifically explored in this region. Therefore this study embarked on an investigation in order to identify the reasons behind the low performance rates of the grade 12 Oshiwambo speaking learners of English and to determine whether the impressionistic results from the Directorate’s report correlate with the present study’s findings. In order to understand the dynamic linguistic system of the learners, a contrastive analysis of Oshiwambo and English was done in order to investigate the potential origins of some of the errors. An error analysis approach was also used to identify, classify and interpret the non-standard forms produced by the learners in their written work. Based on the results obtained from this study, a more comprehensible assessment rubric was devised to help identify learners’ written errors. A group of 100 learners from five different schools in the Oshana region was asked to write an essay of 150 to 200 words in English. The essays were analysed using Corder’s (1967) conceptual framework which outlines the steps that a researcher uses when undertaking an error analysis study. The errors were categorised according to Keshavarz’s (2006) linguistic error taxonomy. Based on this taxonomy, the results revealed that learners largely made errors in the following categories: phonology/orthography, morpho-syntax, lexico-semantics, discourse and techniquepunctuation. The study concluded that these errors were most likely due to: first language interference, overgeneralisation, ignorance of rule restriction and carelessness. Other proposed probable causes were context of learning and lack of knowledge of English grammar. The study makes a significant contribution, in that the findings can be used as a guide for the Namibian Ministry of Education in improving the status quo at schools and informing the line Ministry on various methods of dealing with language difficulties faced by learners. The findings can also empower teachers to help learners with difficulties in English language learning, thereby enabling learners to improve their English language proficiency. The study has proposed methods of intervention in order to facilitate the teaching of English as a second language in the Oshana region. In addition, the study has devised an easily applied assessment rubric that will assist in identifying non-standard forms of language used by learners. The reason for designing a new rubric is because the rubric which is currently being used is believed to be subjective, inconsistent and lacks transparency. , Name in Graduation Programme as: Nghikembua, Anneli Ndapanda
- Full Text:
- Date Issued: 2015
- Authors: Nghikembua, Annelie Ndapanda
- Date: 2015
- Subjects: Corpora (Linguistics) , Language and languages -- Study and teaching -- Error analysis , English language -- Study and teaching (Secondary) -- Namibia -- Oshana , Second language acquisition , Contrastive linguistics
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2386 , http://hdl.handle.net/10962/d1018911
- Description: High failure rates in English as a second language at secondary school level have become a concern in the Namibian education sector. From 2005 until 2013, the overall performance of the grade 12 learners in English as a second language on Ordinary level in the Oshana region was unsatisfactory. In fact, only a minority (18.52 percent) of the grade 12 learners obtained a grading in the range of A to D in comparison to the majority (81.48 percent) of learners who obtained a grading of E to U. The poor performance was attributed to: poor sentence structure, syllabification and spelling (Directorate of National Examination and Assessment, 2007-2010). The causes of these low performance rates however, were not scientifically explored in this region. Therefore this study embarked on an investigation in order to identify the reasons behind the low performance rates of the grade 12 Oshiwambo speaking learners of English and to determine whether the impressionistic results from the Directorate’s report correlate with the present study’s findings. In order to understand the dynamic linguistic system of the learners, a contrastive analysis of Oshiwambo and English was done in order to investigate the potential origins of some of the errors. An error analysis approach was also used to identify, classify and interpret the non-standard forms produced by the learners in their written work. Based on the results obtained from this study, a more comprehensible assessment rubric was devised to help identify learners’ written errors. A group of 100 learners from five different schools in the Oshana region was asked to write an essay of 150 to 200 words in English. The essays were analysed using Corder’s (1967) conceptual framework which outlines the steps that a researcher uses when undertaking an error analysis study. The errors were categorised according to Keshavarz’s (2006) linguistic error taxonomy. Based on this taxonomy, the results revealed that learners largely made errors in the following categories: phonology/orthography, morpho-syntax, lexico-semantics, discourse and techniquepunctuation. The study concluded that these errors were most likely due to: first language interference, overgeneralisation, ignorance of rule restriction and carelessness. Other proposed probable causes were context of learning and lack of knowledge of English grammar. The study makes a significant contribution, in that the findings can be used as a guide for the Namibian Ministry of Education in improving the status quo at schools and informing the line Ministry on various methods of dealing with language difficulties faced by learners. The findings can also empower teachers to help learners with difficulties in English language learning, thereby enabling learners to improve their English language proficiency. The study has proposed methods of intervention in order to facilitate the teaching of English as a second language in the Oshana region. In addition, the study has devised an easily applied assessment rubric that will assist in identifying non-standard forms of language used by learners. The reason for designing a new rubric is because the rubric which is currently being used is believed to be subjective, inconsistent and lacks transparency. , Name in Graduation Programme as: Nghikembua, Anneli Ndapanda
- Full Text:
- Date Issued: 2015
Electrospun fibre based colorimetric probes for biological molecules
- Authors: Mudabuka, Boitumelo
- Date: 2014
- Subjects: Nanofibers , Vitamin C , Dopamine
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4535 , http://hdl.handle.net/10962/d1016354
- Description: The thesis reports the use of electrospun nanofibres as a platform for the development of colorimetric probes. Three colorimetric probes in the form of electrospun nanofibre test strips were developed for the selective detection of ascorbic acid and dopamine because they are crucial biomolecules for physiological processes in human metabolism and usually coexist in biological samples. The simultaneous detection of the biomolecules is very important as their abnormal concentration levels would lead to diseases such as Parkinson's and schizophrenia. Different methods of incorporating detector agents into the nanofibre were exploited for the detection of the biomolecules. The methods included physical incorporation of nanoparticles, covalent bonding of ligand/dyes through surface modification of the fibres. The first colorimetric test strip for ascorbic acid was based on copper-gold alloy nanoparticles prepared in-situ and hosted in nylon6. The test strip showed selectivity in detecting ascorbic acid in the pH range 2 – 7. The suitability of fibres in hosting copper-gold alloy nanoparticles for the colorimetric detection of ascorbic acid was investigated using nylon6, poly(vinyl benzyl chloride)-styrene and cellulose acetate based test strips. All the test strips exhibited leaching and the nylon6 based test strip was found to be thermally stable up to 60 ˚C. The colorimetric performance of the test strips was maintained and neither was colour decay exhibited after 10 months of storage in a shelf. The test strip achieved an eye-ball limit of detection of 1.76 x10-2 mg L-1 and its suitability was demonstrated by the determination of ascorbic acid in fruit juices, urine, serum, and vitamin C tablets. The second colorimetric test strip for ascorbic acid and dopamine employed prussian blue synthesised in-situ in nylon6. Ascorbic acid turned the deep blue test strip to light blue at pH 3, and a faded navy blue colour at a pH range of 6 - 7 while dopamine changed the strip to purple at the same pH range. The versatility of the test strip was demonstrated by detecting ascorbic acid in commercial fruit juices as well as by detecting ascorbic acid as well as dopamine in fortified urine. The eye-ball detection limit of the Prussian blue test strip for ascorbic acid and dopamine was 17.6 mg L-1 and 18.9 mg L-1, respectively. The third method involved a covalent approach, where poly(vinylbenzyl chloride) nanofibers were post functionalised with 2-(2′-pyridyl)-imidazole and iron(III) for the selective detection of ascorbic acid and dopamine. The eye-ball detection limit for ascorbic acid and dopamine was 17.6 mg L-1 and 18.9 mg L-1, respectively. The test strip was selective for dopamine, but the detection of ascorbic acid suffered from interference by glutathione. The application of the test strips was nevertheless demonstrated by the detection of ascorbic acid in fruit juices and dopamine in fortified urine. The developed test strips employing the three approaches were applied without sample pre-treatment and use of supporting equipment.
- Full Text:
- Date Issued: 2014
- Authors: Mudabuka, Boitumelo
- Date: 2014
- Subjects: Nanofibers , Vitamin C , Dopamine
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4535 , http://hdl.handle.net/10962/d1016354
- Description: The thesis reports the use of electrospun nanofibres as a platform for the development of colorimetric probes. Three colorimetric probes in the form of electrospun nanofibre test strips were developed for the selective detection of ascorbic acid and dopamine because they are crucial biomolecules for physiological processes in human metabolism and usually coexist in biological samples. The simultaneous detection of the biomolecules is very important as their abnormal concentration levels would lead to diseases such as Parkinson's and schizophrenia. Different methods of incorporating detector agents into the nanofibre were exploited for the detection of the biomolecules. The methods included physical incorporation of nanoparticles, covalent bonding of ligand/dyes through surface modification of the fibres. The first colorimetric test strip for ascorbic acid was based on copper-gold alloy nanoparticles prepared in-situ and hosted in nylon6. The test strip showed selectivity in detecting ascorbic acid in the pH range 2 – 7. The suitability of fibres in hosting copper-gold alloy nanoparticles for the colorimetric detection of ascorbic acid was investigated using nylon6, poly(vinyl benzyl chloride)-styrene and cellulose acetate based test strips. All the test strips exhibited leaching and the nylon6 based test strip was found to be thermally stable up to 60 ˚C. The colorimetric performance of the test strips was maintained and neither was colour decay exhibited after 10 months of storage in a shelf. The test strip achieved an eye-ball limit of detection of 1.76 x10-2 mg L-1 and its suitability was demonstrated by the determination of ascorbic acid in fruit juices, urine, serum, and vitamin C tablets. The second colorimetric test strip for ascorbic acid and dopamine employed prussian blue synthesised in-situ in nylon6. Ascorbic acid turned the deep blue test strip to light blue at pH 3, and a faded navy blue colour at a pH range of 6 - 7 while dopamine changed the strip to purple at the same pH range. The versatility of the test strip was demonstrated by detecting ascorbic acid in commercial fruit juices as well as by detecting ascorbic acid as well as dopamine in fortified urine. The eye-ball detection limit of the Prussian blue test strip for ascorbic acid and dopamine was 17.6 mg L-1 and 18.9 mg L-1, respectively. The third method involved a covalent approach, where poly(vinylbenzyl chloride) nanofibers were post functionalised with 2-(2′-pyridyl)-imidazole and iron(III) for the selective detection of ascorbic acid and dopamine. The eye-ball detection limit for ascorbic acid and dopamine was 17.6 mg L-1 and 18.9 mg L-1, respectively. The test strip was selective for dopamine, but the detection of ascorbic acid suffered from interference by glutathione. The application of the test strips was nevertheless demonstrated by the detection of ascorbic acid in fruit juices and dopamine in fortified urine. The developed test strips employing the three approaches were applied without sample pre-treatment and use of supporting equipment.
- Full Text:
- Date Issued: 2014
A critical analysis of online Sesotho ICT terminology
- Authors: Nteso, Thato Natasha
- Date: 2013
- Subjects: Information technology -- Study and teaching -- South Africa Sotho language -- Terms and phrases Sotho language -- Orthography and spelling
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3556 , http://hdl.handle.net/10962/d1001654
- Description: Information and Communication Technology (ICT) has taken over every aspect of our daily lives, from commerce to leisure and even culture. Today, mobile phones, desktop computers, hand-held devices, emails and the use of the internet have become a central part of our culture and society. ICT has made us a global society, where people can interact and communicate efficiently. In order for South Africa to be competitive in the global economy, it will need to develop a workforce with appropriate Information Technology skills. Of necessity, these skills will extend to using a computers and developing appropriate software and technical support skills (DOE, 2008). This thesis represents a critical analytical study in that it explores the online Sesotho Information and Communication Technology (ICT). It aims at analysing terminology development in this area. The study aims to determine how Sesotho and ICT correlate and how the linguistic aspect plays a role in online ICT terminology. The focus is not on creating new terms but to analyze the already existing ICT terms available, with regards to linguistic rules and principles and to critique if they are of quality. Furthermore, the thesis explores whether there are other strategies that can be used in the development of this terminology. It also seeks to determine if the terms are easily accessible to students and if they are used at all. Terms will be sourced from the Department of Arts and Culture ICT term list, and the focus will be on extracting only terms that have to do with computer literacy. Other online sources that list Sesotho equivalents will also be considered. The study also assesses the quality of the terms created by the Department of Arts and Culture (DAC) together with the Department of Communications (DOC) for a multilingual ICT terminology list. Furthermore, the thesis explores whether the Sesotho equivalents adhere to the linguistic rules and principles of the language. The other question asked is whether the terms are used by the intended users and if they are easily accessible to the speakers of the language. This entire aspect of the thesis speaks to the notion of the intellectualization of African languages and in this case Sesotho in particular. Not only does the thesis engage with computer literacy terminology, it also presents a detailed literature review of studies and work that has been done in this field. The thesis engagement is also done by linking the backdrop of the history of Sesotho and the Basotho peoples.
- Full Text:
- Date Issued: 2013
- Authors: Nteso, Thato Natasha
- Date: 2013
- Subjects: Information technology -- Study and teaching -- South Africa Sotho language -- Terms and phrases Sotho language -- Orthography and spelling
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3556 , http://hdl.handle.net/10962/d1001654
- Description: Information and Communication Technology (ICT) has taken over every aspect of our daily lives, from commerce to leisure and even culture. Today, mobile phones, desktop computers, hand-held devices, emails and the use of the internet have become a central part of our culture and society. ICT has made us a global society, where people can interact and communicate efficiently. In order for South Africa to be competitive in the global economy, it will need to develop a workforce with appropriate Information Technology skills. Of necessity, these skills will extend to using a computers and developing appropriate software and technical support skills (DOE, 2008). This thesis represents a critical analytical study in that it explores the online Sesotho Information and Communication Technology (ICT). It aims at analysing terminology development in this area. The study aims to determine how Sesotho and ICT correlate and how the linguistic aspect plays a role in online ICT terminology. The focus is not on creating new terms but to analyze the already existing ICT terms available, with regards to linguistic rules and principles and to critique if they are of quality. Furthermore, the thesis explores whether there are other strategies that can be used in the development of this terminology. It also seeks to determine if the terms are easily accessible to students and if they are used at all. Terms will be sourced from the Department of Arts and Culture ICT term list, and the focus will be on extracting only terms that have to do with computer literacy. Other online sources that list Sesotho equivalents will also be considered. The study also assesses the quality of the terms created by the Department of Arts and Culture (DAC) together with the Department of Communications (DOC) for a multilingual ICT terminology list. Furthermore, the thesis explores whether the Sesotho equivalents adhere to the linguistic rules and principles of the language. The other question asked is whether the terms are used by the intended users and if they are easily accessible to the speakers of the language. This entire aspect of the thesis speaks to the notion of the intellectualization of African languages and in this case Sesotho in particular. Not only does the thesis engage with computer literacy terminology, it also presents a detailed literature review of studies and work that has been done in this field. The thesis engagement is also done by linking the backdrop of the history of Sesotho and the Basotho peoples.
- Full Text:
- Date Issued: 2013
Communication at the health care coalface: lessons from selected clinics in Port Elizabeth
- Authors: Mbengo, Nomatshawe
- Date: 2012
- Subjects: Communication in medicine -- Research -- South Africa Community health services -- South Africa -- Eastern Cape Social medicine -- Research -- South Africa Medical care -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3591 , http://hdl.handle.net/10962/d1002166
- Description: This thesis analyses the state of health care in South Africa with particular reference to a clinic and the Provincial Hospital in Port Elizabeth, Eastern Cape. The complexities of health care provision in a diverse sociolinguistic environment where certain languages are emphasized over others, forms the cornerstone of the research. The research focuses on health care in a complex multi-cultural environment. The goal of the research is to present a coherent and robust translation framework for the development of suitable materials to enhance communication across language and cultural barriers in the health care sector. A model (based on research completed in the USA) is presented as a possible alternative in the final chapter of the thesis.
- Full Text:
- Date Issued: 2012
- Authors: Mbengo, Nomatshawe
- Date: 2012
- Subjects: Communication in medicine -- Research -- South Africa Community health services -- South Africa -- Eastern Cape Social medicine -- Research -- South Africa Medical care -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3591 , http://hdl.handle.net/10962/d1002166
- Description: This thesis analyses the state of health care in South Africa with particular reference to a clinic and the Provincial Hospital in Port Elizabeth, Eastern Cape. The complexities of health care provision in a diverse sociolinguistic environment where certain languages are emphasized over others, forms the cornerstone of the research. The research focuses on health care in a complex multi-cultural environment. The goal of the research is to present a coherent and robust translation framework for the development of suitable materials to enhance communication across language and cultural barriers in the health care sector. A model (based on research completed in the USA) is presented as a possible alternative in the final chapter of the thesis.
- Full Text:
- Date Issued: 2012
Angel networks as a business start-up financing option in South Africa
- Authors: Sibanda, Zenzo
- Date: 2011
- Subjects: Angels (Investors) -- South Africa Small business -- Finance -- South Africa New business enterprises -- Finance -- South Africa Venture capital -- South Africa Microfinance -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1164 , http://hdl.handle.net/10962/d1002780
- Description: The following study is about business angels financing small business start-ups. It explores the aspect of starting up an entrepreneurial venture in which the entrepreneur seeks to secure start-up finance from lenders, raising the various issues that are known to characterise this engagement between the entrepreneur and the lender. Using the phenomenological paradigm, the study seeks to determine the awareness of small scale financing by entrepreneurs in South Africa, to determine the most commonly used source of start-up business funding in South Africa, to assess the extent to which business angel financing could be used to finance businesses in South Africa and to determine the factors impacting the use of business angel financing in South Africa. From these objectives, the study will also seek to determine the extent to which business angel networks could facilitate the financing of business start-ups. Small businesses invariably come up in different policy spheres as the main avenues to social and economic construction across national and regional lines. The importance of a successful business start up to a growing economy should not be underestimated. In line with this is the particular factor of gaining access to start up capital, which continues to emerge as a leading contributor to the success or failure of business start ups. Studies continue to verify that the most common challenge faced by most emerging entrepreneurs is start-up capital, either in the lack of this capital, the unfavourable conditions surrounding its availability, the lack of assets to serve as collateral for its use or the ambiguous flow of crucial information between lenders and providers of finance in the funding relationship (Abor and Biekpe, 2006: 69;Hernandez-Trillo, Pagan and Paxton, 2005: 435, ISPESE, 2005: 7, CDE, 2004: 5; Musengi 2003: 11). Roger Sorheim (2005: 179) refers to business angels as private individuals who offer risk capital to unlisted companies that are struggling to obtain start up capital to finance their business ideas. Business angels are further defined as high net-worth bearers of substantial private capital who predominantly invest in the early stage of high risk high potential return business ventures with a positive further growth potential. Business angel finance is typically a ‘once-off’ early stage form of small firm financing compared to the more frequent later stage venture capitalist funding. Studies show that business angels represent an underutilised wealth creation mechanism when it comes to small firm start-ups as most business angels contribute expertise in addition to finance to the start-ups they get involved in. This brings valuable business insight to the commercialisation of a good business idea. The business angel network exposes a range of potentially viable business prospects to willing investors by facilitating the flow of information about entrepreneurs and their businesses, thereby eliminating ambiguity, information asymmetry and transaction costs (Aernoudt and Erikson, 2002: 178; Van Osnabrugge and Robinson, 2000:374; Macht, 2006:1; Ehlrich, De Noble, Moore and Weaver, 1994:70; Sorheim, 2005:179). To achieve a holistic approach to a phenomenon which appears to be relatively new in South African business circles, the study will follow a qualitative approach in which two categories of populations will be used, one of small business operators and the other of business angels in South Africa. In the study, 20 small business operators and five business angels in Grahamstown will be approached using the convenience and snowballing sampling methods respectively. Face-to-face semi-structured interviews will be used as a data collection method and content analysis will be used as a data analysis tool (Collis and Hussey, 2003:156, Driver, Wood, Segal and Herrington, 2001:32, National Small Business Act ). There has been very limited research on business angels in the South African context, therefore the study would significantly contribute in entrepreneurship, government and small business development circles as it brings about attention to what the researcher predicts is an underutilised business start-up financing option.
- Full Text:
- Date Issued: 2011
- Authors: Sibanda, Zenzo
- Date: 2011
- Subjects: Angels (Investors) -- South Africa Small business -- Finance -- South Africa New business enterprises -- Finance -- South Africa Venture capital -- South Africa Microfinance -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1164 , http://hdl.handle.net/10962/d1002780
- Description: The following study is about business angels financing small business start-ups. It explores the aspect of starting up an entrepreneurial venture in which the entrepreneur seeks to secure start-up finance from lenders, raising the various issues that are known to characterise this engagement between the entrepreneur and the lender. Using the phenomenological paradigm, the study seeks to determine the awareness of small scale financing by entrepreneurs in South Africa, to determine the most commonly used source of start-up business funding in South Africa, to assess the extent to which business angel financing could be used to finance businesses in South Africa and to determine the factors impacting the use of business angel financing in South Africa. From these objectives, the study will also seek to determine the extent to which business angel networks could facilitate the financing of business start-ups. Small businesses invariably come up in different policy spheres as the main avenues to social and economic construction across national and regional lines. The importance of a successful business start up to a growing economy should not be underestimated. In line with this is the particular factor of gaining access to start up capital, which continues to emerge as a leading contributor to the success or failure of business start ups. Studies continue to verify that the most common challenge faced by most emerging entrepreneurs is start-up capital, either in the lack of this capital, the unfavourable conditions surrounding its availability, the lack of assets to serve as collateral for its use or the ambiguous flow of crucial information between lenders and providers of finance in the funding relationship (Abor and Biekpe, 2006: 69;Hernandez-Trillo, Pagan and Paxton, 2005: 435, ISPESE, 2005: 7, CDE, 2004: 5; Musengi 2003: 11). Roger Sorheim (2005: 179) refers to business angels as private individuals who offer risk capital to unlisted companies that are struggling to obtain start up capital to finance their business ideas. Business angels are further defined as high net-worth bearers of substantial private capital who predominantly invest in the early stage of high risk high potential return business ventures with a positive further growth potential. Business angel finance is typically a ‘once-off’ early stage form of small firm financing compared to the more frequent later stage venture capitalist funding. Studies show that business angels represent an underutilised wealth creation mechanism when it comes to small firm start-ups as most business angels contribute expertise in addition to finance to the start-ups they get involved in. This brings valuable business insight to the commercialisation of a good business idea. The business angel network exposes a range of potentially viable business prospects to willing investors by facilitating the flow of information about entrepreneurs and their businesses, thereby eliminating ambiguity, information asymmetry and transaction costs (Aernoudt and Erikson, 2002: 178; Van Osnabrugge and Robinson, 2000:374; Macht, 2006:1; Ehlrich, De Noble, Moore and Weaver, 1994:70; Sorheim, 2005:179). To achieve a holistic approach to a phenomenon which appears to be relatively new in South African business circles, the study will follow a qualitative approach in which two categories of populations will be used, one of small business operators and the other of business angels in South Africa. In the study, 20 small business operators and five business angels in Grahamstown will be approached using the convenience and snowballing sampling methods respectively. Face-to-face semi-structured interviews will be used as a data collection method and content analysis will be used as a data analysis tool (Collis and Hussey, 2003:156, Driver, Wood, Segal and Herrington, 2001:32, National Small Business Act ). There has been very limited research on business angels in the South African context, therefore the study would significantly contribute in entrepreneurship, government and small business development circles as it brings about attention to what the researcher predicts is an underutilised business start-up financing option.
- Full Text:
- Date Issued: 2011
Wattle we do? alien eradication and the 'ecology of fear' on the fringes of a world heritage site, South Africa
- Authors: Merron, James Lawrence
- Date: 2010
- Subjects: Wattles (Plants) -- South Africa -- Eastern Cape Invasive plants -- South Africa -- Eastern Cape South Africa -- Social conditions -- 1994- South Africa -- Politics and government -- 1994- Environmental degradation -- South Africa -- Eastern Cape World Heritage areas -- South Africa -- Eastern Cape Environmentalism -- South Africa -- Eastern Cape -- Social aspects Environmentalism -- South Africa -- Eastern Cape -- Political aspects Social ecology -- South Africa -- Eastern Cape Human ecology -- South Africa -- Eastern Cape Applied anthropology -- South Africa -- Eastern Cape Sustainable development -- South Africa -- Eastern Cape -- Social aspects Nature -- Effect of human beings on -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2092 , http://hdl.handle.net/10962/d1002655
- Description: In their article ―Naturing the Nation: Aliens, the Apocalypse and the Post Colonial State (2001) Jean and John Comaroff look at ―the contemporary predicament of South Africa through the prism of environmental catastrophe. Through it they reveal the context in which alien plants have become an urgent affair of the state. Following their lead, I show how alien plants (particularly Australian wattle) continue to provide grounds for new social and political aspirations in South Africa, though in a different setting. With reference to a group of private landowners on the fringe of a World Heritage Site -- the Baviaanskloof Mega-Reserve, Eastern Cape, South Africa -- I show how an increasingly apocalyptic and xenophobic environmental agenda has influenced local activists seeking to address social and ecological issues in tandem with alien-eradication. These local activists adhere to a particular brand of environmentalism which Milton (1993) argues can be considered a social, cultural and religious phenomenon. The subjects of my main empirical investigation offer practical ways of achieving a transformational end through a new ritual activity in relation to a spread and exchange of environmental ideas and practices on a world-wide scale. On the ground this group practices ecosocietal restoration through which they aspire to mend the bond between people and the land in a spiritual and moral sense, bolstering intrinsic incentives for environmental stewardship and achieving ―cultural reconciliation in an attempt to reimagine what South Africa could be.
- Full Text:
- Date Issued: 2010
- Authors: Merron, James Lawrence
- Date: 2010
- Subjects: Wattles (Plants) -- South Africa -- Eastern Cape Invasive plants -- South Africa -- Eastern Cape South Africa -- Social conditions -- 1994- South Africa -- Politics and government -- 1994- Environmental degradation -- South Africa -- Eastern Cape World Heritage areas -- South Africa -- Eastern Cape Environmentalism -- South Africa -- Eastern Cape -- Social aspects Environmentalism -- South Africa -- Eastern Cape -- Political aspects Social ecology -- South Africa -- Eastern Cape Human ecology -- South Africa -- Eastern Cape Applied anthropology -- South Africa -- Eastern Cape Sustainable development -- South Africa -- Eastern Cape -- Social aspects Nature -- Effect of human beings on -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2092 , http://hdl.handle.net/10962/d1002655
- Description: In their article ―Naturing the Nation: Aliens, the Apocalypse and the Post Colonial State (2001) Jean and John Comaroff look at ―the contemporary predicament of South Africa through the prism of environmental catastrophe. Through it they reveal the context in which alien plants have become an urgent affair of the state. Following their lead, I show how alien plants (particularly Australian wattle) continue to provide grounds for new social and political aspirations in South Africa, though in a different setting. With reference to a group of private landowners on the fringe of a World Heritage Site -- the Baviaanskloof Mega-Reserve, Eastern Cape, South Africa -- I show how an increasingly apocalyptic and xenophobic environmental agenda has influenced local activists seeking to address social and ecological issues in tandem with alien-eradication. These local activists adhere to a particular brand of environmentalism which Milton (1993) argues can be considered a social, cultural and religious phenomenon. The subjects of my main empirical investigation offer practical ways of achieving a transformational end through a new ritual activity in relation to a spread and exchange of environmental ideas and practices on a world-wide scale. On the ground this group practices ecosocietal restoration through which they aspire to mend the bond between people and the land in a spiritual and moral sense, bolstering intrinsic incentives for environmental stewardship and achieving ―cultural reconciliation in an attempt to reimagine what South Africa could be.
- Full Text:
- Date Issued: 2010
An evaluation of formal mentoring programmes within two South African organisations
- Authors: Shelton, Delyse Elizabeth
- Date: 2006
- Subjects: Mentoring -- South Africa , Organizational effectiveness -- Evaluation , Organizational effectiveness -- South Africa , Corporate culture -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1186 , http://hdl.handle.net/10962/d1002803 , Mentoring -- South Africa , Organizational effectiveness -- Evaluation , Organizational effectiveness -- South Africa , Corporate culture -- South Africa
- Description: The benefits of informal mentoring are numerous and organisations have recognised these benefits in terms of organisational development. There has been an attempt to harvest these benefits through the introduction of formal mentoring programmes as a tool to fast track and then ultimately retain internal capability. This research on formal mentoring programmes occurred within a qualitative paradigm and data was obtained through document analysis and interviews from five mentoring pairs in one organisation and four mentoring pairs in another. The data was then presented and analysed in terms of the models proposed in the literature. The aim of this research was to evaluate formal mentoring programmes within South African organisations based on a framework provided by the literature. It was found that the literature proposed no formal evaluation model and thus, one was developed based on models of programme evaluation and formal mentoring implementation models. On the evaluation of the two formal mentoring programmes, it was found that there are some issues raised in the literature that are pertinent to both organisations but that there were also issues that were only relevant to one of the programmes. According to the research the differences in perceived success of the mentoring programme lay in the goals of the programme relating to the broader goals and culture of the organisation. It is recommended that future research investigate the impact of organisational culture on the effectiveness of formal mentoring programmes. The research also identified a need for supportive resources although this study did not assess the appropriateness and sufficiency of the resources. Organisations also need to implement effective evaluative practices in order to implement effective changes to the programme.
- Full Text:
- Date Issued: 2006
- Authors: Shelton, Delyse Elizabeth
- Date: 2006
- Subjects: Mentoring -- South Africa , Organizational effectiveness -- Evaluation , Organizational effectiveness -- South Africa , Corporate culture -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1186 , http://hdl.handle.net/10962/d1002803 , Mentoring -- South Africa , Organizational effectiveness -- Evaluation , Organizational effectiveness -- South Africa , Corporate culture -- South Africa
- Description: The benefits of informal mentoring are numerous and organisations have recognised these benefits in terms of organisational development. There has been an attempt to harvest these benefits through the introduction of formal mentoring programmes as a tool to fast track and then ultimately retain internal capability. This research on formal mentoring programmes occurred within a qualitative paradigm and data was obtained through document analysis and interviews from five mentoring pairs in one organisation and four mentoring pairs in another. The data was then presented and analysed in terms of the models proposed in the literature. The aim of this research was to evaluate formal mentoring programmes within South African organisations based on a framework provided by the literature. It was found that the literature proposed no formal evaluation model and thus, one was developed based on models of programme evaluation and formal mentoring implementation models. On the evaluation of the two formal mentoring programmes, it was found that there are some issues raised in the literature that are pertinent to both organisations but that there were also issues that were only relevant to one of the programmes. According to the research the differences in perceived success of the mentoring programme lay in the goals of the programme relating to the broader goals and culture of the organisation. It is recommended that future research investigate the impact of organisational culture on the effectiveness of formal mentoring programmes. The research also identified a need for supportive resources although this study did not assess the appropriateness and sufficiency of the resources. Organisations also need to implement effective evaluative practices in order to implement effective changes to the programme.
- Full Text:
- Date Issued: 2006
Theatre voice as metaphor : the advocacy of a praxis based on the centrality of voice to performance
- Authors: Mills, Elizabeth
- Date: 2000
- Subjects: Voice , Voice culture , Acting
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2141 , http://hdl.handle.net/10962/d1002373 , Voice , Voice culture , Acting
- Description: This study proposes a view of theatre voice as central to performance. It proposes a shift in paradigm through the foregrounding of the function of theatre voice as one of the creative strands of the theatre matrix. The function of theatre voice becomes a theatrical function. Theatre is created in the voice and, therefore, any act of theatre should include conscious questions about the meanings that are, or can be evoked through the voice in theatre. A second thrust to this study is that theatre voice practice should be included in, and theatre voice practitioners should actively engage in, broader debates about theatre. Introduction: The idea that the voice in performance is the enactment of conscious theatrical choices is set up through the notion of the theatrical use of the voice. The introduction outlines the kinds of performance contexts in which a theatrical use of the voice takes shape. This includes an assessment of the degree to which the specific South African context of the writer is useful to questions about a theatrical use of the voice. The concepts which are central to such a view of theatre voice are expanded. These are: the theatrical agency of the actor, theatre voice, the theatrical use of the voice and praxis. Selected examples from local and other productions are offered to illustrate a range of interpretive possibilities open to the voice when considered, in the first instance, as performance. Chapter one: The actor’s relationship with voice is explored through the notion of actor agency. Historically, actors were theatrically empowered by a closer involvement with playwriting, staging, apprenticeship forms of actor training and theatre management. It is argued that the emergence of the director as a new theatrical agent has diminished this actor agency. On the other hand, the introduction of a realist acting methodology has given the actor autonomy of craft, empowering the actor in unprecedented ways. The theatrical agency of actors, directors and theatre voice practitioners is explored as influencing the status and the perception of theatre voice within theatre. The proposal of the centrality of voice to performance is dependent on the agency of actors, directors and theatre voice practitioners. Chapter two: It is argued that an Aristotelian Poetics of Voice has, under the influence of realism, developed into a “Poetics of the Self”. The paradigmatic shift proposed through a view of the voice as central to theatre, is explored through a post realist, intertextuality of voice. This includes a re-consideration of the contemporary theatre voice notion of the “natural” voice. Chapter three: Cicely Berry’s work, with particular reference to The Actor and his Text (1987), is analysed in terms of realism and the theatrical use of the voice. A second focus in the analysis of Berry’s work supports the argument that voice practitioners theorise positions for theatre voice even though their texts are practical and technically orientated. Berry’s work is singled out here because the contemporary practice of the Central School tradition is the generic tradition of South African English theatre voice practice. Chapter four: Strategies and constructs are proposed in support of the centrality of voice to the theatre. Ways of realising a theatrical use of the voice are also suggested. This is based on a shift in the way in which practitioners think about theatre voice. In the first instance, it is suggested that practitioners move beyond positions of polarity and actively embrace that which is contradictory in theatre and theatre voice practice. Secondly, a traditional hermeneutic understanding of the interpretation of voice is challenged. Thirdly, the use of metaphor which is pertinent to actors, directors and voice practitioners is explored as a means to vocal action. Concrete examples of the creative use of the voice, are provided through the sonic texts of Performance Writing. By way of conclusion, some ideas are offered about the issue of empowering the actor in a theatrical use of the voice. This study is intended to contribute to a theoretical and practical debate which will promote the argument for the centrality of voice to performance.
- Full Text:
- Date Issued: 2000
Theatre voice as metaphor : the advocacy of a praxis based on the centrality of voice to performance
- Authors: Mills, Elizabeth
- Date: 2000
- Subjects: Voice , Voice culture , Acting
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2141 , http://hdl.handle.net/10962/d1002373 , Voice , Voice culture , Acting
- Description: This study proposes a view of theatre voice as central to performance. It proposes a shift in paradigm through the foregrounding of the function of theatre voice as one of the creative strands of the theatre matrix. The function of theatre voice becomes a theatrical function. Theatre is created in the voice and, therefore, any act of theatre should include conscious questions about the meanings that are, or can be evoked through the voice in theatre. A second thrust to this study is that theatre voice practice should be included in, and theatre voice practitioners should actively engage in, broader debates about theatre. Introduction: The idea that the voice in performance is the enactment of conscious theatrical choices is set up through the notion of the theatrical use of the voice. The introduction outlines the kinds of performance contexts in which a theatrical use of the voice takes shape. This includes an assessment of the degree to which the specific South African context of the writer is useful to questions about a theatrical use of the voice. The concepts which are central to such a view of theatre voice are expanded. These are: the theatrical agency of the actor, theatre voice, the theatrical use of the voice and praxis. Selected examples from local and other productions are offered to illustrate a range of interpretive possibilities open to the voice when considered, in the first instance, as performance. Chapter one: The actor’s relationship with voice is explored through the notion of actor agency. Historically, actors were theatrically empowered by a closer involvement with playwriting, staging, apprenticeship forms of actor training and theatre management. It is argued that the emergence of the director as a new theatrical agent has diminished this actor agency. On the other hand, the introduction of a realist acting methodology has given the actor autonomy of craft, empowering the actor in unprecedented ways. The theatrical agency of actors, directors and theatre voice practitioners is explored as influencing the status and the perception of theatre voice within theatre. The proposal of the centrality of voice to performance is dependent on the agency of actors, directors and theatre voice practitioners. Chapter two: It is argued that an Aristotelian Poetics of Voice has, under the influence of realism, developed into a “Poetics of the Self”. The paradigmatic shift proposed through a view of the voice as central to theatre, is explored through a post realist, intertextuality of voice. This includes a re-consideration of the contemporary theatre voice notion of the “natural” voice. Chapter three: Cicely Berry’s work, with particular reference to The Actor and his Text (1987), is analysed in terms of realism and the theatrical use of the voice. A second focus in the analysis of Berry’s work supports the argument that voice practitioners theorise positions for theatre voice even though their texts are practical and technically orientated. Berry’s work is singled out here because the contemporary practice of the Central School tradition is the generic tradition of South African English theatre voice practice. Chapter four: Strategies and constructs are proposed in support of the centrality of voice to the theatre. Ways of realising a theatrical use of the voice are also suggested. This is based on a shift in the way in which practitioners think about theatre voice. In the first instance, it is suggested that practitioners move beyond positions of polarity and actively embrace that which is contradictory in theatre and theatre voice practice. Secondly, a traditional hermeneutic understanding of the interpretation of voice is challenged. Thirdly, the use of metaphor which is pertinent to actors, directors and voice practitioners is explored as a means to vocal action. Concrete examples of the creative use of the voice, are provided through the sonic texts of Performance Writing. By way of conclusion, some ideas are offered about the issue of empowering the actor in a theatrical use of the voice. This study is intended to contribute to a theoretical and practical debate which will promote the argument for the centrality of voice to performance.
- Full Text:
- Date Issued: 2000
Computer modelling of pyrotechnic combustion
- Authors: Taylor, Steven John
- Date: 1996
- Subjects: Combustion -- Computer simulation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4426 , http://hdl.handle.net/10962/d1006913
- Description: One of the most important industrial uses of pyrotechnic compositions is as delay fuses in electric detonators. Many factors influence the rate of burning of such fuses. These include (a) the primary choice of chemical components, followed by (b) the physical properties of these components, particularly the particle-size and distribution of the fuel, (c) the composition of the system chosen and (d) the presence of additives and/or impurities. A full experimental study of the influences of even a few of these factors, while attempting to hold other potential variables constant, would be extremely time consuming and hence attention has been focused on the possibilities of modelling pyrotechnic combustion. Various approaches to the modelling of pyrotechnic combustion are discussed. These include:- (i) one-dimensional finite-difference models; (ii) two-dimensional finite-element models; (iii) particle-packing considerations; (iv) Monte Carlo models. Predicted behaviour is compared with extensive experimental information for the widely-used antimony/potassium permanganate pyrotechnic system, and the tungsten /potassium dichromate pyrotechnic system. The one-dimensional finite-difference model was investigated to give a simple means of investigating the effects of some parameters on the combustion of a pyrotechnic. The two-dimensional finite-difference model used similar inputs, but at the expense of considerably more computer power, gave more extensive information such as the shape of the burning front and the temperature gradients throughout the column and within the casing material. Both these models gave improved results when allowance was made for autocatalytic kinetics in place of the usual assumption of an "order-of-reaction", n ≤ 1. The particle-packing model investigated the qualitative relationship between the maximum burning rate of a pyrotechnic system and the maximum number of contact points (per 1.00 g composition) calculated for that system. Qualitative agreement was found for those systems which are presumed to burn mainly via solid-solid reactions. The Monte Carlo model investigated the effect of the random packing of fuel and oxidant particles on the variability of the burning rate of a pyrotechnic composition.
- Full Text:
- Date Issued: 1996
- Authors: Taylor, Steven John
- Date: 1996
- Subjects: Combustion -- Computer simulation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4426 , http://hdl.handle.net/10962/d1006913
- Description: One of the most important industrial uses of pyrotechnic compositions is as delay fuses in electric detonators. Many factors influence the rate of burning of such fuses. These include (a) the primary choice of chemical components, followed by (b) the physical properties of these components, particularly the particle-size and distribution of the fuel, (c) the composition of the system chosen and (d) the presence of additives and/or impurities. A full experimental study of the influences of even a few of these factors, while attempting to hold other potential variables constant, would be extremely time consuming and hence attention has been focused on the possibilities of modelling pyrotechnic combustion. Various approaches to the modelling of pyrotechnic combustion are discussed. These include:- (i) one-dimensional finite-difference models; (ii) two-dimensional finite-element models; (iii) particle-packing considerations; (iv) Monte Carlo models. Predicted behaviour is compared with extensive experimental information for the widely-used antimony/potassium permanganate pyrotechnic system, and the tungsten /potassium dichromate pyrotechnic system. The one-dimensional finite-difference model was investigated to give a simple means of investigating the effects of some parameters on the combustion of a pyrotechnic. The two-dimensional finite-difference model used similar inputs, but at the expense of considerably more computer power, gave more extensive information such as the shape of the burning front and the temperature gradients throughout the column and within the casing material. Both these models gave improved results when allowance was made for autocatalytic kinetics in place of the usual assumption of an "order-of-reaction", n ≤ 1. The particle-packing model investigated the qualitative relationship between the maximum burning rate of a pyrotechnic system and the maximum number of contact points (per 1.00 g composition) calculated for that system. Qualitative agreement was found for those systems which are presumed to burn mainly via solid-solid reactions. The Monte Carlo model investigated the effect of the random packing of fuel and oxidant particles on the variability of the burning rate of a pyrotechnic composition.
- Full Text:
- Date Issued: 1996
A cross cultural investigation of gender: gender stereotypes of English and Xhosa undergraduate students
- Authors: Robinson, Kathryn Ann
- Date: 1990
- Subjects: Sex role -- South Africa -- Cross-cultural studies , Stereotypes (Social psychology) -- South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2901 , http://hdl.handle.net/10962/d1002065
- Description: This study begins with the assertion that gender-role stereotypes exist in society, and that these influence the way the members of society perceive themselves and others. These stereotypes consist of sex-typed personality traits, attitudes, interests and behaviours, and they vary to a greater or lesser extent according to the culture that they originate in. Just as ordinary members of society are influenced by these stereotypes, so too are researchers, although this is not something that is often readily admitted. A great deal of research has been undertaken on gender-roles in past years, but researchers have tended to re-use existing conceptualisations of gender without examining whether they are in fact salient for the culture or generation under study. This study begins with the premise that (in South Africa as much as anywhere) before truly accurate assessment of the distributions of gender roles in a culture can be initiated, the culturally specific content of its gender-roles must be discovered. This firstly involves the description of the culture's gender-role stereotypes. Such explication would hopefully also help researchers to avoid making biased interpretations as a result of the stereotypes. Secondly, the relationship between stereotypes and self-perceptions must be established to see if scales based on the former are valid for use on the latter. This study's aim was to begin to investigate these two areas in English and Xhosa students. 94 white English speaking, and 48 black Xhosa speaking undergraduate students responded to an open ended, and a Likert-type questionnaire on various traits, attitudes and behaviours, by rating each for the "typical" male and female as well as themselves. Descriptions of stereotypes and self-ratings were obtained from performing within culture t-tests, comparing ratings of typical males and females, and male and female self ratings. Data from the open ended questionnaires was used to fill out these descriptions, which were then compared across sexes and across cultures. Gender stereotyping proved to be salient in both cultures, and gender stereotypes of the two cultures shared some similarities but also had menaingful differences. In both cultures, stereotypes and self-descriptions paralleled one another in some areas, but also differed significantly. It was concluded that the same gender-role scale would not be equally valid for use in the two cuItures, and that scales based on stereotypes would not be altogether valid for assessing self-perceptions. Various issues and implications arising from the results are discussed critically, including the proposal for a redefinition of the terms "stereotype" and "culture" to suit South African society.
- Full Text:
- Date Issued: 1990
- Authors: Robinson, Kathryn Ann
- Date: 1990
- Subjects: Sex role -- South Africa -- Cross-cultural studies , Stereotypes (Social psychology) -- South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2901 , http://hdl.handle.net/10962/d1002065
- Description: This study begins with the assertion that gender-role stereotypes exist in society, and that these influence the way the members of society perceive themselves and others. These stereotypes consist of sex-typed personality traits, attitudes, interests and behaviours, and they vary to a greater or lesser extent according to the culture that they originate in. Just as ordinary members of society are influenced by these stereotypes, so too are researchers, although this is not something that is often readily admitted. A great deal of research has been undertaken on gender-roles in past years, but researchers have tended to re-use existing conceptualisations of gender without examining whether they are in fact salient for the culture or generation under study. This study begins with the premise that (in South Africa as much as anywhere) before truly accurate assessment of the distributions of gender roles in a culture can be initiated, the culturally specific content of its gender-roles must be discovered. This firstly involves the description of the culture's gender-role stereotypes. Such explication would hopefully also help researchers to avoid making biased interpretations as a result of the stereotypes. Secondly, the relationship between stereotypes and self-perceptions must be established to see if scales based on the former are valid for use on the latter. This study's aim was to begin to investigate these two areas in English and Xhosa students. 94 white English speaking, and 48 black Xhosa speaking undergraduate students responded to an open ended, and a Likert-type questionnaire on various traits, attitudes and behaviours, by rating each for the "typical" male and female as well as themselves. Descriptions of stereotypes and self-ratings were obtained from performing within culture t-tests, comparing ratings of typical males and females, and male and female self ratings. Data from the open ended questionnaires was used to fill out these descriptions, which were then compared across sexes and across cultures. Gender stereotyping proved to be salient in both cultures, and gender stereotypes of the two cultures shared some similarities but also had menaingful differences. In both cultures, stereotypes and self-descriptions paralleled one another in some areas, but also differed significantly. It was concluded that the same gender-role scale would not be equally valid for use in the two cuItures, and that scales based on stereotypes would not be altogether valid for assessing self-perceptions. Various issues and implications arising from the results are discussed critically, including the proposal for a redefinition of the terms "stereotype" and "culture" to suit South African society.
- Full Text:
- Date Issued: 1990
An investigation into the possible causes of the difference between the boys' and girls' drop-out rate in mathematics at the end of the junior secondary phase of education
- Authors: Oberholster, E J
- Date: 1986
- Subjects: Mathematical ability , Gender , Mathematics teaching , Drop-out rate , Junior secondary
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: vital:1351 , http://hdl.handle.net/10962/d1001417
- Description: In the past two decades much research in the field of Mathematics in Education has dealt with boy- girl differences. In the 1960's sex differences in mathematical achievement played an important role in research. The results of more recent and better controlled studies seem to indicate that overall boy-girl differences in mathematical achievement are probably negligible at the Primary stage and exist at the Secondary stage principally in areas involving spatial visualization and problem solving.
- Full Text:
- Date Issued: 1986
- Authors: Oberholster, E J
- Date: 1986
- Subjects: Mathematical ability , Gender , Mathematics teaching , Drop-out rate , Junior secondary
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: vital:1351 , http://hdl.handle.net/10962/d1001417
- Description: In the past two decades much research in the field of Mathematics in Education has dealt with boy- girl differences. In the 1960's sex differences in mathematical achievement played an important role in research. The results of more recent and better controlled studies seem to indicate that overall boy-girl differences in mathematical achievement are probably negligible at the Primary stage and exist at the Secondary stage principally in areas involving spatial visualization and problem solving.
- Full Text:
- Date Issued: 1986
The religious system of the Ndlambe of East London district
- Authors: Bigalke, Erich Heinrich
- Date: 1970
- Subjects: Xhosa (African people) -- Religion
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2113 , http://hdl.handle.net/10962/d1007648
- Description: From conclusion: This study has had a twofold objective, to present ethnographic data on a people who belong to the Xhosa tribal cluster and more specifically, to throw light on aspects of the ancestor cult among the Xhosa. In particular an attempt has been made to explore the nature of the interrelation between the social structure and the ancestor cult. Attention has been focussed on the lineage as an institution, on the rituals devoted to the ancestors and on the means of explaining misfortune. Though the Ndlambe, in common with other groups of indigenous people in the Eastern Cape, have been experiencing developments brought about by social change during the better part of two centuries, the recent implementation of the Betterment Scheme has resulted in drastic demographic changes. The former settlement pattern of scattered homesteads has given way before village formation. Beyond the fact that it has resulted in the closer proximity of homesteads, with the opportunities for cooperation and conflict that this situation implies, nothing is known of the direct organizational influence of this development. More…
- Full Text:
- Date Issued: 1970
- Authors: Bigalke, Erich Heinrich
- Date: 1970
- Subjects: Xhosa (African people) -- Religion
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2113 , http://hdl.handle.net/10962/d1007648
- Description: From conclusion: This study has had a twofold objective, to present ethnographic data on a people who belong to the Xhosa tribal cluster and more specifically, to throw light on aspects of the ancestor cult among the Xhosa. In particular an attempt has been made to explore the nature of the interrelation between the social structure and the ancestor cult. Attention has been focussed on the lineage as an institution, on the rituals devoted to the ancestors and on the means of explaining misfortune. Though the Ndlambe, in common with other groups of indigenous people in the Eastern Cape, have been experiencing developments brought about by social change during the better part of two centuries, the recent implementation of the Betterment Scheme has resulted in drastic demographic changes. The former settlement pattern of scattered homesteads has given way before village formation. Beyond the fact that it has resulted in the closer proximity of homesteads, with the opportunities for cooperation and conflict that this situation implies, nothing is known of the direct organizational influence of this development. More…
- Full Text:
- Date Issued: 1970
An investigation into the components of motivation so far as these determine employee stability and work satisfaction amongst Europeans and Africans engaged in the same occupational grading in the copper mining industry of Zambia
- Authors: Coetzee, J A G
- Date: 1968
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3383 , http://hdl.handle.net/10962/d1013334
- Description: From introduction: The aim of this study is to analyse the motivational system, so far as this regulates and orients the stability and work satisfactions of Europeans and Africans, in a supervisory occupational category engaged in industrial-mining in the Copper Mining Company of Rhokana, Zambia , during a period of six years, ending in 1963 .
- Full Text:
- Date Issued: 1968
- Authors: Coetzee, J A G
- Date: 1968
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3383 , http://hdl.handle.net/10962/d1013334
- Description: From introduction: The aim of this study is to analyse the motivational system, so far as this regulates and orients the stability and work satisfactions of Europeans and Africans, in a supervisory occupational category engaged in industrial-mining in the Copper Mining Company of Rhokana, Zambia , during a period of six years, ending in 1963 .
- Full Text:
- Date Issued: 1968
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