Development of aquaculture practitioner’s business skills to enhance income sustainability
- Authors: Koyo, Sichumile
- Date: 2017
- Subjects: Aquaculture industry -- South Africa -- Eastern Cape -- Management , Success in business -- South Africa -- Eastern Cape Sustainable development -- South Africa -- Eastern Cape Economic development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/18025 , vital:28561
- Description: The Eastern Cape Province is endowed with numerous aquatic resources with aquaculture potential. Farmers in suitable areas across the province are turning to fish farming as a way of producing high quality food, either for their families or for the market, and as a way of earning extra income. This research study therefore sought to examine the business management skills of the current aquaculture practitioners in the province as to enhance them. Literature reviewed showed that various business management skills that an aquaculture practitioner is required to have in order to enhance income sustainability. The business management that seemed to be of importance in enhancing income generation were identified, and those included, marketing management skills, financial management skills, operations management skills, and supporting skills which include, computer skills, technical skills , negotiation and time management skills. The study employed descriptive survey design and stratified sampling design was used in order to select a sample size of 55 respondents. The study adopted online survey questionnaires as instruments of data collection. Quantitative research approach then took place from chapter three in the empirical data collection, analysis and interpretation. Data collection tool was the constructed using the developed theoretical framework to determine the perception about the level of business management skills of aquaculture practitioners. Data was then collected using an online survey because it was seen as convenient and time saving to the researcher. The collected data was the recorded, organised and cleaned. The necessary statistical calculations which include; Pearson r counts, mean, mode, median, standard deviations, percentiles, chi-square, Spearman rank and percentages were performed. These statistical analyses were used to describe and interpreted the data. The findings indicate that the most aquaculture practitioners are the middle aged people from the age group 45 to 50 years. The results also show that the present aquaculture practitioners marketing management skills are still not considered in the aquaculture business because in the aquaculture industry there is currently less advertising as the demand for the products surpasses the production. The marketing management skills elements that appeared to be low negative include, considering the needs of the market, identifying target market, working out marketing strategy and finding ways to do better that the competition. The findings also indicate that the respondents also seem not to be confident about applying their personal life skill like time management and negotiation skills. The majority the respondents have on average had received education training in Honours/B.Tech Degree qualification. More of the respondents had on average worked more than 11 years. The abalone industry aquaculture sub-sector seems to be the most dominating sub sector.
- Full Text:
- Date Issued: 2017
- Authors: Koyo, Sichumile
- Date: 2017
- Subjects: Aquaculture industry -- South Africa -- Eastern Cape -- Management , Success in business -- South Africa -- Eastern Cape Sustainable development -- South Africa -- Eastern Cape Economic development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/18025 , vital:28561
- Description: The Eastern Cape Province is endowed with numerous aquatic resources with aquaculture potential. Farmers in suitable areas across the province are turning to fish farming as a way of producing high quality food, either for their families or for the market, and as a way of earning extra income. This research study therefore sought to examine the business management skills of the current aquaculture practitioners in the province as to enhance them. Literature reviewed showed that various business management skills that an aquaculture practitioner is required to have in order to enhance income sustainability. The business management that seemed to be of importance in enhancing income generation were identified, and those included, marketing management skills, financial management skills, operations management skills, and supporting skills which include, computer skills, technical skills , negotiation and time management skills. The study employed descriptive survey design and stratified sampling design was used in order to select a sample size of 55 respondents. The study adopted online survey questionnaires as instruments of data collection. Quantitative research approach then took place from chapter three in the empirical data collection, analysis and interpretation. Data collection tool was the constructed using the developed theoretical framework to determine the perception about the level of business management skills of aquaculture practitioners. Data was then collected using an online survey because it was seen as convenient and time saving to the researcher. The collected data was the recorded, organised and cleaned. The necessary statistical calculations which include; Pearson r counts, mean, mode, median, standard deviations, percentiles, chi-square, Spearman rank and percentages were performed. These statistical analyses were used to describe and interpreted the data. The findings indicate that the most aquaculture practitioners are the middle aged people from the age group 45 to 50 years. The results also show that the present aquaculture practitioners marketing management skills are still not considered in the aquaculture business because in the aquaculture industry there is currently less advertising as the demand for the products surpasses the production. The marketing management skills elements that appeared to be low negative include, considering the needs of the market, identifying target market, working out marketing strategy and finding ways to do better that the competition. The findings also indicate that the respondents also seem not to be confident about applying their personal life skill like time management and negotiation skills. The majority the respondents have on average had received education training in Honours/B.Tech Degree qualification. More of the respondents had on average worked more than 11 years. The abalone industry aquaculture sub-sector seems to be the most dominating sub sector.
- Full Text:
- Date Issued: 2017
Developmental dynamics in land reform projects : comparative studies of two different land reform projects, farm-worker equity schemes and beneficiary-owned and run citrus projects
- Authors: Tiwana, Sebenzile Wilbert
- Date: 2017
- Subjects: Land reform -- South Africa -- Eastern Cape Sustainable development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5047 , vital:29025
- Description: In this study, a comparison was made between two different land reform models in the Sarah Baartman District of the Eastern Cape to, firstly; evaluate and identify factors that influence long-term sustainability and prosperity of farms owned and run by beneficiaries, and farms jointly owned by beneficiaries and former farmer / mentor in a share equity scheme, referred to as Farmworkers Equity Share Schemes (FWES), and secondly; to identify forms of government support in each of the two models. Mixed methods were used to collect data for the study. It involved the administration of structured interviews to beneficiaries, and semi-structured interviews with the mentor and government officials. The study found that the equity share scheme improved the livelihood of the beneficiaries in terms of getting annual dividends and acquiring new properties, empowered beneficiaries in decision-making in terms of having a say in financial expenditure on farm operations and the structuring of dividend pay-outs, and the project showed great potential of long-term sustainability and prosperity. Conversely, the beneficiary-owned and run project did not improve the lives of beneficiaries, was prone to infighting and fraught with organisational and management problems with no prospects of long-term sustainability and economic viability.
- Full Text:
- Date Issued: 2017
- Authors: Tiwana, Sebenzile Wilbert
- Date: 2017
- Subjects: Land reform -- South Africa -- Eastern Cape Sustainable development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5047 , vital:29025
- Description: In this study, a comparison was made between two different land reform models in the Sarah Baartman District of the Eastern Cape to, firstly; evaluate and identify factors that influence long-term sustainability and prosperity of farms owned and run by beneficiaries, and farms jointly owned by beneficiaries and former farmer / mentor in a share equity scheme, referred to as Farmworkers Equity Share Schemes (FWES), and secondly; to identify forms of government support in each of the two models. Mixed methods were used to collect data for the study. It involved the administration of structured interviews to beneficiaries, and semi-structured interviews with the mentor and government officials. The study found that the equity share scheme improved the livelihood of the beneficiaries in terms of getting annual dividends and acquiring new properties, empowered beneficiaries in decision-making in terms of having a say in financial expenditure on farm operations and the structuring of dividend pay-outs, and the project showed great potential of long-term sustainability and prosperity. Conversely, the beneficiary-owned and run project did not improve the lives of beneficiaries, was prone to infighting and fraught with organisational and management problems with no prospects of long-term sustainability and economic viability.
- Full Text:
- Date Issued: 2017
Devulcanization of model compounds by a variety of diphenyldisulfides
- Authors: Boyce, Annemè
- Date: 2017
- Subjects: Rubber -- Recycling Rubber, Reclaimed , Rubber -- Standards -- South Africa Rubber -- Research Chromatographic analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/14730 , vital:27834
- Description: Improvements to the properties of recycled rubber, by developing a more selective breakdown process, is an important issue and a global challenge. Devulcanization is the most promising way to achieve this. It is a process which aims to totally or partially cleave monosulfidic (C-S-C), disulfidic (C-S-S-C) and polysulfidic (C-Sx-C) crosslinks of vulcanized rubber. In this study, the devulcanization of sulfur-vulcanized natural rubber with a variety of diphenyldisulfides has been studied using 2,3-dimethyl-2-butene and squalene as model compounds, vulcanized by sulfur and 2-bisbenzothiazole-2,2’-disulfide. 2-aminodiphenyldisulfide; 4-amino-diphenyldisulfide; bis(2-benzamido-)diphenyldisulfide and 2,2’-bithiosalicylic acid were used as aromatic disulfides devulcanization agents. Thermal analysis was used to investigate interactions between various combinations of curatives in the vulcanization systems in the absence of model compounds. Thermogravimetric analysis was used to detect mass changes during vulcanization and whether the samples decompose/evaporate so as not to contaminate differential scanning calorimetry instrumentation. Differential scanning calorimetry was used to investigate reactions occurring between curatives. Comparison of reversing and non-reversing signals in modulated experiments are suggestive of reactions between devulcanization agents and sulfur, and accelerators Vulcanization of the model compounds were performed in 10m evacuated sealed glass ampoules placed in an oil bath at 160 °C and agitated for the duration of vulcanization. After 60 min the ampoules were removed and quenched. These were then devulcanized by exposure to a devulcanization agent in a sealed ampoule at 180 for 60 min. Crosslinked 2,3-dimethyl-2-butene species were isolated and analysed by reversed phase high performance liquid chromatography. Particular attention was paid to changes in the number of sulfur atoms in the crosslinks. Results indicate that of the devulcanization agents tested 4-amino-diphenyldisulfide was the most effective. No detrimental effect on devulcanization efficiency was caused by the substitution of a basic amino group with an acidic carboxylic acid group Gel permeation chromatography was performed on devulcanized squalene crosslinks using a tetrahydrofuran eluent. GPC investigations with squalene were less effective than HPLC experiments with 2,3-dimethyl-2-butene at evaluating the relative efficiency of individual devulcanization agents. Results were, however, consistent with 4-amino-diphenyldisulfide again being the most efficient devulcanization agent.
- Full Text:
- Date Issued: 2017
- Authors: Boyce, Annemè
- Date: 2017
- Subjects: Rubber -- Recycling Rubber, Reclaimed , Rubber -- Standards -- South Africa Rubber -- Research Chromatographic analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/14730 , vital:27834
- Description: Improvements to the properties of recycled rubber, by developing a more selective breakdown process, is an important issue and a global challenge. Devulcanization is the most promising way to achieve this. It is a process which aims to totally or partially cleave monosulfidic (C-S-C), disulfidic (C-S-S-C) and polysulfidic (C-Sx-C) crosslinks of vulcanized rubber. In this study, the devulcanization of sulfur-vulcanized natural rubber with a variety of diphenyldisulfides has been studied using 2,3-dimethyl-2-butene and squalene as model compounds, vulcanized by sulfur and 2-bisbenzothiazole-2,2’-disulfide. 2-aminodiphenyldisulfide; 4-amino-diphenyldisulfide; bis(2-benzamido-)diphenyldisulfide and 2,2’-bithiosalicylic acid were used as aromatic disulfides devulcanization agents. Thermal analysis was used to investigate interactions between various combinations of curatives in the vulcanization systems in the absence of model compounds. Thermogravimetric analysis was used to detect mass changes during vulcanization and whether the samples decompose/evaporate so as not to contaminate differential scanning calorimetry instrumentation. Differential scanning calorimetry was used to investigate reactions occurring between curatives. Comparison of reversing and non-reversing signals in modulated experiments are suggestive of reactions between devulcanization agents and sulfur, and accelerators Vulcanization of the model compounds were performed in 10m evacuated sealed glass ampoules placed in an oil bath at 160 °C and agitated for the duration of vulcanization. After 60 min the ampoules were removed and quenched. These were then devulcanized by exposure to a devulcanization agent in a sealed ampoule at 180 for 60 min. Crosslinked 2,3-dimethyl-2-butene species were isolated and analysed by reversed phase high performance liquid chromatography. Particular attention was paid to changes in the number of sulfur atoms in the crosslinks. Results indicate that of the devulcanization agents tested 4-amino-diphenyldisulfide was the most effective. No detrimental effect on devulcanization efficiency was caused by the substitution of a basic amino group with an acidic carboxylic acid group Gel permeation chromatography was performed on devulcanized squalene crosslinks using a tetrahydrofuran eluent. GPC investigations with squalene were less effective than HPLC experiments with 2,3-dimethyl-2-butene at evaluating the relative efficiency of individual devulcanization agents. Results were, however, consistent with 4-amino-diphenyldisulfide again being the most efficient devulcanization agent.
- Full Text:
- Date Issued: 2017
Diamond turning of contact lens polymers
- Authors: Liman, Muhammad Mukhtar
- Date: 2017
- Subjects: Diamond turning Contact lenses , Electrostatic lenses Lenses -- Design and construction Neural networks (Computer science)
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/19223 , vital:28789
- Description: Contact lens production requires high accuracy and good surface integrity. Surface roughness is generally used to measure the index quality of a turning process. It has been an important response because it has direct influence toward the part performance and the production cost. Hence, choosing optimal cutting parameters will not only improve the quality measure but also the productivity. In this study, an ONSI-56 (Onsifocon A) contact lens buttons were used to investigate the triboelectric phenomena and the effects of turning parameters on surface finish of the lens materials. ONSI-56 specimens are machined by Precitech Nanoform Ultra-grind 250 precision machine and the roughness values of the diamond turned surfaces are measured by Taylor Hopson PGI Profilometer. Electrostatics values were measured using electrostatic voltmeter. An artificial neural network (ANN) and response surface (RS) model were developed to predict surface roughness and electrostatic discharge (ESD) on the turned ONSI-56. In the development of predictive models, turning parameters of cutting speed, feed rate and depth of cut were considered as model variables. The required data for predictive models were obtained by conducting a series of turning test and measuring the surface roughness and ESD data. Good agreement is observed between the predictive models results and the experimental measurements. The ANN and RSM models for ONSI-56 are compared with each other using mean absolute percentage error (MAPE) for accuracy and computational cost.
- Full Text:
- Date Issued: 2017
- Authors: Liman, Muhammad Mukhtar
- Date: 2017
- Subjects: Diamond turning Contact lenses , Electrostatic lenses Lenses -- Design and construction Neural networks (Computer science)
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/19223 , vital:28789
- Description: Contact lens production requires high accuracy and good surface integrity. Surface roughness is generally used to measure the index quality of a turning process. It has been an important response because it has direct influence toward the part performance and the production cost. Hence, choosing optimal cutting parameters will not only improve the quality measure but also the productivity. In this study, an ONSI-56 (Onsifocon A) contact lens buttons were used to investigate the triboelectric phenomena and the effects of turning parameters on surface finish of the lens materials. ONSI-56 specimens are machined by Precitech Nanoform Ultra-grind 250 precision machine and the roughness values of the diamond turned surfaces are measured by Taylor Hopson PGI Profilometer. Electrostatics values were measured using electrostatic voltmeter. An artificial neural network (ANN) and response surface (RS) model were developed to predict surface roughness and electrostatic discharge (ESD) on the turned ONSI-56. In the development of predictive models, turning parameters of cutting speed, feed rate and depth of cut were considered as model variables. The required data for predictive models were obtained by conducting a series of turning test and measuring the surface roughness and ESD data. Good agreement is observed between the predictive models results and the experimental measurements. The ANN and RSM models for ONSI-56 are compared with each other using mean absolute percentage error (MAPE) for accuracy and computational cost.
- Full Text:
- Date Issued: 2017
Die kriteria vir ’n tweerigtingaanleerderwoordeboek met Afrikaans en Frans as taalpaar
- Stone, Hanel, Vrancken, Maria
- Authors: Stone, Hanel , Vrancken, Maria
- Date: 2017
- Subjects: Afrikaans language -- Lexicography , Afrikaans language -- Lexicology , Lexicography
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/13789 , vital:27308
- Description: Die gevarieerde landskap van leksikografie stel aanleerders uit verskillende sosiale agtergronde in staat om ’n vreemde taal vanuit hul eie moedertaal aan te leer. Gevolglik is een van die maniere waarop taalverwerwing bevorder kan word, veral deur die ontwikkeling van aanleerderwoordeboeke, meer spesifiek vreemdetaalwoordeboeke wat volwassenes bemagtig om die vreemde taal aan te leer om beide resepsie en produksie van die taal te bemeester. Die ontwerp en samestelling van ’n woordeboek is ’n komplekse saak, want onder andere moet die verskille tussen kultuurgroepe, die vlak van die aanleerder se vermoë om ’n taal aan te leer, die aanleerder se kennis van die betrokke taal en die beskikbaarheid van leermateriaal en bronne in ag geneem word. Hierby moet ook vertaalekwivalente in beide tale vir resepsie en produksie verskaf word. Die doelwit van hierdie studie is om ’n raamwerk daar te stel vir die kriteria van ’n tweerigtingaanleerderwoordeboek met Afrikaans en Frans as taalpaar. Die hipotese is dat dit moontlik is om ’n doeltreffende raamwerk vir die kriteria vir ‘n tweerigting-aanleerderwoordeboek met Afrikaans en Frans as taalpaar te ontwikkel. Die motivering vir hierdie studie is deels gegrond op die gebrek aan aanleerderwoordeboeke met Afrikaans en Frans as taalpaar. Die Afrikaanssprekende moet tans Frans deur middel van Engels aanleer vanweë die gebrek aan leermateriaal. Die navorser se persoonlike ervaring met die aanleer van Frans as vreemde taal het die ondersoek verder geïnspireer. Kriteria vir ’n tweerigtingaanleerderwoordeboek met Afrikaans en Frans as taalpaar is vasgestel aan die hand van ’n literatuuroorsig. Die geïdentifiseerde kriteria is in detail bespreek en aan die hand van praktiese voorbeelde eksemplaries toegelig.
- Full Text:
- Date Issued: 2017
- Authors: Stone, Hanel , Vrancken, Maria
- Date: 2017
- Subjects: Afrikaans language -- Lexicography , Afrikaans language -- Lexicology , Lexicography
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/13789 , vital:27308
- Description: Die gevarieerde landskap van leksikografie stel aanleerders uit verskillende sosiale agtergronde in staat om ’n vreemde taal vanuit hul eie moedertaal aan te leer. Gevolglik is een van die maniere waarop taalverwerwing bevorder kan word, veral deur die ontwikkeling van aanleerderwoordeboeke, meer spesifiek vreemdetaalwoordeboeke wat volwassenes bemagtig om die vreemde taal aan te leer om beide resepsie en produksie van die taal te bemeester. Die ontwerp en samestelling van ’n woordeboek is ’n komplekse saak, want onder andere moet die verskille tussen kultuurgroepe, die vlak van die aanleerder se vermoë om ’n taal aan te leer, die aanleerder se kennis van die betrokke taal en die beskikbaarheid van leermateriaal en bronne in ag geneem word. Hierby moet ook vertaalekwivalente in beide tale vir resepsie en produksie verskaf word. Die doelwit van hierdie studie is om ’n raamwerk daar te stel vir die kriteria van ’n tweerigtingaanleerderwoordeboek met Afrikaans en Frans as taalpaar. Die hipotese is dat dit moontlik is om ’n doeltreffende raamwerk vir die kriteria vir ‘n tweerigting-aanleerderwoordeboek met Afrikaans en Frans as taalpaar te ontwikkel. Die motivering vir hierdie studie is deels gegrond op die gebrek aan aanleerderwoordeboeke met Afrikaans en Frans as taalpaar. Die Afrikaanssprekende moet tans Frans deur middel van Engels aanleer vanweë die gebrek aan leermateriaal. Die navorser se persoonlike ervaring met die aanleer van Frans as vreemde taal het die ondersoek verder geïnspireer. Kriteria vir ’n tweerigtingaanleerderwoordeboek met Afrikaans en Frans as taalpaar is vasgestel aan die hand van ’n literatuuroorsig. Die geïdentifiseerde kriteria is in detail bespreek en aan die hand van praktiese voorbeelde eksemplaries toegelig.
- Full Text:
- Date Issued: 2017
Dietary diversity amongst adults who buy at shopping malls in the Nelson Mandela Bay area
- Authors: De Bruin, Eunice Mari
- Date: 2017
- Subjects: Nutrition -- South Africa -- Port Elizabeth , Older people -- Nutrition Diet Food security -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/15027 , vital:28114
- Description: Background: Assessing the level of dietary diversity and contributing factors that influence the level of dietary diversity amongst adults can highlight gaps in nutrition interventions, policies and programmes, which aim at combating the double burden of malnutrition. Aim: The aim of this study was to determine which factors and relationships affect the level of dietary diversity of adults in the Nelson Mandela Bay area. Design: An exploratory comparative, cross-sectional, quantitative study design with a qualitative component that was utilised. Both interviewer- and participantadministered questionnaire sections were applied. Data were analysed using IBM SPSS Statistics, Statistica Version 12, Microsoft Office Excel 2007, Spearman rho correlation co-efficient and Pearson’s chi-square test (p-value <0.05). Participants and setting: A convenience-stratified sample (n=480) was used, consisting of adults who reside and shop at shopping centres in the Nelson Mandela area, after obtaining informed consent. Results: The findings indicated that adults in the Nelson Mandela Bay area who shopped at shopping malls had a medium level of dietary diversity. The dietary patterns found were not in line with the South African Food Based Dietary Guidelines. The most consumed food items were ‘cereals' (95%), 'sweetening agents and sweets' (89%) and ‘spices, condiments and beverages’ (87%). Fruit (45,2%) and vegetables (64,8%) were generally poorly consumed. Significance was shown as having an effect on the level of dietary diversity for factors such as ethnicity, level of education, amount of money spent on food purchase per month, distance travelled to purchase food, and nutrition knowledge. Conclusion: The study suggests that adults living in the Nelson Mandela Bay area have a medium level of dietary diversity, with practices that are not in line with the recommended South African Food Based Dietary Guidelines. Strategies, including nutrition education promotion and the implementation of current policies, programmes and interventions, should be implemented and/or strengthened to encourage behaviour change.
- Full Text:
- Date Issued: 2017
- Authors: De Bruin, Eunice Mari
- Date: 2017
- Subjects: Nutrition -- South Africa -- Port Elizabeth , Older people -- Nutrition Diet Food security -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/15027 , vital:28114
- Description: Background: Assessing the level of dietary diversity and contributing factors that influence the level of dietary diversity amongst adults can highlight gaps in nutrition interventions, policies and programmes, which aim at combating the double burden of malnutrition. Aim: The aim of this study was to determine which factors and relationships affect the level of dietary diversity of adults in the Nelson Mandela Bay area. Design: An exploratory comparative, cross-sectional, quantitative study design with a qualitative component that was utilised. Both interviewer- and participantadministered questionnaire sections were applied. Data were analysed using IBM SPSS Statistics, Statistica Version 12, Microsoft Office Excel 2007, Spearman rho correlation co-efficient and Pearson’s chi-square test (p-value <0.05). Participants and setting: A convenience-stratified sample (n=480) was used, consisting of adults who reside and shop at shopping centres in the Nelson Mandela area, after obtaining informed consent. Results: The findings indicated that adults in the Nelson Mandela Bay area who shopped at shopping malls had a medium level of dietary diversity. The dietary patterns found were not in line with the South African Food Based Dietary Guidelines. The most consumed food items were ‘cereals' (95%), 'sweetening agents and sweets' (89%) and ‘spices, condiments and beverages’ (87%). Fruit (45,2%) and vegetables (64,8%) were generally poorly consumed. Significance was shown as having an effect on the level of dietary diversity for factors such as ethnicity, level of education, amount of money spent on food purchase per month, distance travelled to purchase food, and nutrition knowledge. Conclusion: The study suggests that adults living in the Nelson Mandela Bay area have a medium level of dietary diversity, with practices that are not in line with the recommended South African Food Based Dietary Guidelines. Strategies, including nutrition education promotion and the implementation of current policies, programmes and interventions, should be implemented and/or strengthened to encourage behaviour change.
- Full Text:
- Date Issued: 2017
Differential regulation of wheat (Triticum aestivum) callose synthases during Russian wheat aphid (diuraphis noxia)infestation
- Authors: Ngwenya, Nompilo
- Date: 2017
- Subjects: Russian wheat aphid Wheat -- Diseases and pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/8100 , vital:31522
- Description: Plant production serves as the primary food source for all living beings and is continuously being affected by many biotic and abiotic factors. Wheat, one of the most consumed cereal crops in the world and the second most cultivated crop after maize in South Africa, is continuously being affected by Russian wheat aphid (RWA) since 1978. To counteract the effect of this aphid, the first resistant wheat cultivar was developed in 1984 in South Africa containing the Dn1 resistance gene. However, the mechanism of action of the resistance is still not fully understood to date. The feeding of the RWA on the wheat induces callose deposition especially in susceptible wheat cultivars, linking the β-1.3-polysaccharide (callose) to the resistance mechanism. Callose is synthesized by callose synthases, also known as glucan synthase-like genes (GSL). Not much is known about the mechanism of action of callose synthases or how they are regulated in response to the RWA. Bioinformatics tools, such as those available at NCBI, were used to identify the wheat callose synthases genes. The proteins encoded by the identified wheat callose synthases genes, were then analyzed for conserved domain motifs using the MEME suite and InterproScan, sequence similarities using ClustaL Omega and transmembrane domains using HMMTOP and ProtCamp. These were then compared with those of the already characterized Arabidopsis callose synthase proteins in an attempt to identify the wheat callose synthase(s) that responds to aphid feeding. Further bioinformatics studies were carried out to identify the presence of biotic stress associated cis-acting regulatory elements found in the 1.5 kbp upstream region of the start codon of the Arabidopsis callose synthase genes. Eight partial wheat callose synthase sequences were identified and two of these (TaGSL2 and TaGSL22) showed high similarities to the AtGSL5, which is up-regulated in response to aphid feeding in Arabidopsis. Six of the wheat callose synthase genes were mediated to code for the functional callose synthases proteins: TaGSL3, 8, 12, 19, 22 and 23, and analyzed for conserved protein motifs. Based on the sequence similarities and conserved protein domains, TaGSL2 and TaGSL22 were found to be the most similar to AtGSL5 and most likely to respond to RWA infestation. Cis-acting regulatory element analyses confirmed the possibility of TaGSL22 being responsible for callose deposition in wheat as biotic stress associated cis-acting regulatory elements, Box W1, TC- rich element and W- box were all found in the 1.5 kbp upstream of the TaGSL22 coding region. Callose was quantified in both susceptible and resistant wheat cultivars using the aniline blue fluorescence method. When infested with RWA-SA1, the susceptible wheat cultivar (Tugela) deposited significantly higher amounts of callose, compared to the resistant wheat cultivar (Tugela DN), which deposited little, to no callose with respect to the control samples. Transcription analysis, of the TaGSL2 and TaGSL22 in RWA-SA2 infested Tugela and Tugela DN wheat cultivars, was performed using real time polymerase chain reaction (qPCR). Both TaGSL2 and TaGSL22 genes were up-regulated in Tugela and Tugela DN wheat cultivars in response to RWA-SA2 infestation, with TaGSL22 being more expressed than TaGSL2 in both cultivars, indicating that RWA-SA2 is able to overcome the resistance of Tugela DN and cause callose deposition. However, significantly higher expression of both genes was still observed in the susceptible, Tugela wheat cultivar. This study therefore confirms that callose deposition is associated with RWA-SA1 feeding, only in the susceptible wheat cultivar, Tugela and not the resistant cultivar, Tugela DN. However, during RWA-SA2 feeding, two of the eight identified callose synthases in wheat, are up-regulated in response to RWA-SA2 feeding, in both the resistant and susceptible wheat cultivars with higher levels observed in the susceptible wheat cultivar when compared to the resistant wheat cultivar. TaGSL2 and TaGSL22 are therefore implicated in the callose deposition observed in the susceptible and resistant wheat cultivars, after RWA-SA2 infestation. Further studies are required to confirm the differential regulation of the two wheat callose synthases proteins during RWA infestation and their possible role in the resistance mechanism of the resistant wheat cultivar, Tugela DN.
- Full Text:
- Date Issued: 2017
- Authors: Ngwenya, Nompilo
- Date: 2017
- Subjects: Russian wheat aphid Wheat -- Diseases and pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/8100 , vital:31522
- Description: Plant production serves as the primary food source for all living beings and is continuously being affected by many biotic and abiotic factors. Wheat, one of the most consumed cereal crops in the world and the second most cultivated crop after maize in South Africa, is continuously being affected by Russian wheat aphid (RWA) since 1978. To counteract the effect of this aphid, the first resistant wheat cultivar was developed in 1984 in South Africa containing the Dn1 resistance gene. However, the mechanism of action of the resistance is still not fully understood to date. The feeding of the RWA on the wheat induces callose deposition especially in susceptible wheat cultivars, linking the β-1.3-polysaccharide (callose) to the resistance mechanism. Callose is synthesized by callose synthases, also known as glucan synthase-like genes (GSL). Not much is known about the mechanism of action of callose synthases or how they are regulated in response to the RWA. Bioinformatics tools, such as those available at NCBI, were used to identify the wheat callose synthases genes. The proteins encoded by the identified wheat callose synthases genes, were then analyzed for conserved domain motifs using the MEME suite and InterproScan, sequence similarities using ClustaL Omega and transmembrane domains using HMMTOP and ProtCamp. These were then compared with those of the already characterized Arabidopsis callose synthase proteins in an attempt to identify the wheat callose synthase(s) that responds to aphid feeding. Further bioinformatics studies were carried out to identify the presence of biotic stress associated cis-acting regulatory elements found in the 1.5 kbp upstream region of the start codon of the Arabidopsis callose synthase genes. Eight partial wheat callose synthase sequences were identified and two of these (TaGSL2 and TaGSL22) showed high similarities to the AtGSL5, which is up-regulated in response to aphid feeding in Arabidopsis. Six of the wheat callose synthase genes were mediated to code for the functional callose synthases proteins: TaGSL3, 8, 12, 19, 22 and 23, and analyzed for conserved protein motifs. Based on the sequence similarities and conserved protein domains, TaGSL2 and TaGSL22 were found to be the most similar to AtGSL5 and most likely to respond to RWA infestation. Cis-acting regulatory element analyses confirmed the possibility of TaGSL22 being responsible for callose deposition in wheat as biotic stress associated cis-acting regulatory elements, Box W1, TC- rich element and W- box were all found in the 1.5 kbp upstream of the TaGSL22 coding region. Callose was quantified in both susceptible and resistant wheat cultivars using the aniline blue fluorescence method. When infested with RWA-SA1, the susceptible wheat cultivar (Tugela) deposited significantly higher amounts of callose, compared to the resistant wheat cultivar (Tugela DN), which deposited little, to no callose with respect to the control samples. Transcription analysis, of the TaGSL2 and TaGSL22 in RWA-SA2 infested Tugela and Tugela DN wheat cultivars, was performed using real time polymerase chain reaction (qPCR). Both TaGSL2 and TaGSL22 genes were up-regulated in Tugela and Tugela DN wheat cultivars in response to RWA-SA2 infestation, with TaGSL22 being more expressed than TaGSL2 in both cultivars, indicating that RWA-SA2 is able to overcome the resistance of Tugela DN and cause callose deposition. However, significantly higher expression of both genes was still observed in the susceptible, Tugela wheat cultivar. This study therefore confirms that callose deposition is associated with RWA-SA1 feeding, only in the susceptible wheat cultivar, Tugela and not the resistant cultivar, Tugela DN. However, during RWA-SA2 feeding, two of the eight identified callose synthases in wheat, are up-regulated in response to RWA-SA2 feeding, in both the resistant and susceptible wheat cultivars with higher levels observed in the susceptible wheat cultivar when compared to the resistant wheat cultivar. TaGSL2 and TaGSL22 are therefore implicated in the callose deposition observed in the susceptible and resistant wheat cultivars, after RWA-SA2 infestation. Further studies are required to confirm the differential regulation of the two wheat callose synthases proteins during RWA infestation and their possible role in the resistance mechanism of the resistant wheat cultivar, Tugela DN.
- Full Text:
- Date Issued: 2017
Dinoflagellate communities in Algoa Bay: abundance and dynamics
- Authors: Van Zyl, Hendrik Francois
- Date: 2017
- Subjects: Marine microbiology , Microbiology Marine biology -- Indian Ocean
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/21218 , vital:29457
- Description: The contribution of dinoflagellates to the phytoplankton of Algoa Bay is largely unknown. This study aimed to address this, but additionally considered seasonal and spatial variation in the dinoflagellate communities of Algoa Bay. Phytoplankton abundance and the inorganic nutrients ammonium, total oxidized nitrogen, soluble reactive phosphorus and silicate were analysed. Diatoms dominated the phytoplankton community in most samples, with dinoflagellates only occasionally dominating the community. No seasonality could be detected in dinoflagellate abundance. Furthermore, no significant spatial patterns could be distinguished in dinoflagellate abundance, with the only exception being that the Port Elizabeth harbour waters contained significantly fewer dinoflagellate cells than the younger Ngqura harbour. Total phytoplankton abundance was correlated with inorganic nitrogen concentrations, but this was due to diatoms – dinoflagellate abundance did not correlate significantly with any nutrient measured. Both the common, historically bloom-forming Noctiluca scintilans, as well as the recently red tide-forming Lingulodinium polyhedra were recorded during the study, the latter almost exclusively from the harbours, which can be considered repositories of these toxic and harmful algal cells. The findings suggest that dinoflagellates in Algoa Bay are a robust phytoplankton group able to survive, and often thrive, in wide range of environmental conditions.
- Full Text:
- Date Issued: 2017
- Authors: Van Zyl, Hendrik Francois
- Date: 2017
- Subjects: Marine microbiology , Microbiology Marine biology -- Indian Ocean
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/21218 , vital:29457
- Description: The contribution of dinoflagellates to the phytoplankton of Algoa Bay is largely unknown. This study aimed to address this, but additionally considered seasonal and spatial variation in the dinoflagellate communities of Algoa Bay. Phytoplankton abundance and the inorganic nutrients ammonium, total oxidized nitrogen, soluble reactive phosphorus and silicate were analysed. Diatoms dominated the phytoplankton community in most samples, with dinoflagellates only occasionally dominating the community. No seasonality could be detected in dinoflagellate abundance. Furthermore, no significant spatial patterns could be distinguished in dinoflagellate abundance, with the only exception being that the Port Elizabeth harbour waters contained significantly fewer dinoflagellate cells than the younger Ngqura harbour. Total phytoplankton abundance was correlated with inorganic nitrogen concentrations, but this was due to diatoms – dinoflagellate abundance did not correlate significantly with any nutrient measured. Both the common, historically bloom-forming Noctiluca scintilans, as well as the recently red tide-forming Lingulodinium polyhedra were recorded during the study, the latter almost exclusively from the harbours, which can be considered repositories of these toxic and harmful algal cells. The findings suggest that dinoflagellates in Algoa Bay are a robust phytoplankton group able to survive, and often thrive, in wide range of environmental conditions.
- Full Text:
- Date Issued: 2017
Direct income tax and the digital economy
- Authors: Mackenzie, Lara
- Date: 2017
- Subjects: Income tax Corporations -- Taxation , information technology -- Economic aspects Electronic commerce
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/18047 , vital:28568
- Description: Due to the nature of the digital economy, multi-national entities are able to trade in countries over the internet without a physical presence, they are setting up group structures across the world, housing intellectual property in tax havens and shifting profits between jurisdictions, lowering their group tax rates. This treatise considered the OECD/G20 BEPS Project 2015 Final Report on Action Plan 1 which discusses the nature, risks and proposed options to combat base erosion and profit sharing (BEPS). Although the OECD have made no recommendations in their report many countries have taken action to protect their tax bases. The scope of this treatise is limited to multi-national entities who avoid tax presence in a country or shift profits to off-shore entities in low/no tax jurisdictions. The aim of this treatise is to identify the risks posed by the nature of the digital economy to direct taxation and analyse proposed solutions to respond to these risks. A comparative study of the proposal and changes implemented in the UK, Australia and India was undertaken to gain an understanding of international thinking regarding the best way to combat BEPS. These proposals were then compared to the South African perspective in order to determine which of the proposals would be feasible to combat BEPS in South Africa.
- Full Text:
- Date Issued: 2017
- Authors: Mackenzie, Lara
- Date: 2017
- Subjects: Income tax Corporations -- Taxation , information technology -- Economic aspects Electronic commerce
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/18047 , vital:28568
- Description: Due to the nature of the digital economy, multi-national entities are able to trade in countries over the internet without a physical presence, they are setting up group structures across the world, housing intellectual property in tax havens and shifting profits between jurisdictions, lowering their group tax rates. This treatise considered the OECD/G20 BEPS Project 2015 Final Report on Action Plan 1 which discusses the nature, risks and proposed options to combat base erosion and profit sharing (BEPS). Although the OECD have made no recommendations in their report many countries have taken action to protect their tax bases. The scope of this treatise is limited to multi-national entities who avoid tax presence in a country or shift profits to off-shore entities in low/no tax jurisdictions. The aim of this treatise is to identify the risks posed by the nature of the digital economy to direct taxation and analyse proposed solutions to respond to these risks. A comparative study of the proposal and changes implemented in the UK, Australia and India was undertaken to gain an understanding of international thinking regarding the best way to combat BEPS. These proposals were then compared to the South African perspective in order to determine which of the proposals would be feasible to combat BEPS in South Africa.
- Full Text:
- Date Issued: 2017
Discovering the root of obesity through the symbology of food: a historical and cultural exploration
- Authors: Jacobs, Nadine
- Date: 2017
- Subjects: Obesity -- Psychological aspects , Obesity -- Research Behavior modification Psychophysiology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/17569 , vital:28379
- Description: Obesity is fast becoming a worldwide issue with detrimental health consequences. The increasing availability of effective nutritional strategies, physical exercise regimes and behaviour modification approaches to weight loss do not offer a satisfactory explanation as to why only two to five percent of people who have lost weight successfully manage to retain the weight loss over the long term. By referring to several concepts on how the symbols of food originate in the unconscious and end up becoming the unconscious impetus for conscious thought and dietary behaviours relating to food, the complexity of food pathologies, with specific reference to obesity is explored. The study presents a narrative review of the available literature on symbols in a variety of cultural-historical contexts through the theoretical lens of the psychoanalytic framework. The study contributed to the current treatment approaches to obesity, by highlighting how the unconscious content of the psyche serve to compromise conscious efforts to address the problem of obesity. Also, the need for further research into the development of a model that, by incorporating the psychoanalytic approach to obesity, will support the long-term success of weight loss intervention by addressing the underlying issues, is emphasised.
- Full Text:
- Date Issued: 2017
Discovering the root of obesity through the symbology of food: a historical and cultural exploration
- Authors: Jacobs, Nadine
- Date: 2017
- Subjects: Obesity -- Psychological aspects , Obesity -- Research Behavior modification Psychophysiology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/17569 , vital:28379
- Description: Obesity is fast becoming a worldwide issue with detrimental health consequences. The increasing availability of effective nutritional strategies, physical exercise regimes and behaviour modification approaches to weight loss do not offer a satisfactory explanation as to why only two to five percent of people who have lost weight successfully manage to retain the weight loss over the long term. By referring to several concepts on how the symbols of food originate in the unconscious and end up becoming the unconscious impetus for conscious thought and dietary behaviours relating to food, the complexity of food pathologies, with specific reference to obesity is explored. The study presents a narrative review of the available literature on symbols in a variety of cultural-historical contexts through the theoretical lens of the psychoanalytic framework. The study contributed to the current treatment approaches to obesity, by highlighting how the unconscious content of the psyche serve to compromise conscious efforts to address the problem of obesity. Also, the need for further research into the development of a model that, by incorporating the psychoanalytic approach to obesity, will support the long-term success of weight loss intervention by addressing the underlying issues, is emphasised.
- Full Text:
- Date Issued: 2017
Discrimination based on age in labour law
- Authors: Oosthuizen, Tania
- Date: 2017
- Subjects: Age and employment -- Law and legislation -- South Africa , Discrimination in employment -- Law and legislation -- South Africa , Age discrimination in employment -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: http://hdl.handle.net/10948/19484 , vital:28884
- Description: This piece aims to prove that a compulsory retirement age can no longer be justified in South Africa as a constitutional state. In times where people are gradually reaching older ages due to advances in a variety of fields, it seemed that the concept of a compulsory retirement age requires an in depth consideration. This is especially measured against the backdrop of equality and discrimination legislation within The Republic of South Africa. The development of social security law provides the larger framework in which to understand the concept and intentions around retirement. Discrimination and equality legislation demonstrates that age as a listed ground for discrimination does not necessarily simplify the jurisprudence pertaining to it, especially where alternatives have been developed for continued employment. The main point of reference in the South African justice system concerning discrimination disputes is the Harksen v Lane test, whereas the principle encapsulated in Waco v Schweitzer, relates particularly to discrimination based on age. These judgements and subsequent application will be illustrated and considered during the course of this research. The influence of fund rules and fixed-term contracts on the situation will aim to show the reality of the situation. In an effort to show that the problem of an ageing workforce and retirement is not localised to South Africa, an international overview of other constitutional countries is included for context. The comparison goes further to include non-constitutional countries to illustrate the global issue. This comparison was also included in an effort to find alternative strategies that may be utilised in South Africa for retirement and age discrimination legislations and social policies.
- Full Text:
- Date Issued: 2017
- Authors: Oosthuizen, Tania
- Date: 2017
- Subjects: Age and employment -- Law and legislation -- South Africa , Discrimination in employment -- Law and legislation -- South Africa , Age discrimination in employment -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: http://hdl.handle.net/10948/19484 , vital:28884
- Description: This piece aims to prove that a compulsory retirement age can no longer be justified in South Africa as a constitutional state. In times where people are gradually reaching older ages due to advances in a variety of fields, it seemed that the concept of a compulsory retirement age requires an in depth consideration. This is especially measured against the backdrop of equality and discrimination legislation within The Republic of South Africa. The development of social security law provides the larger framework in which to understand the concept and intentions around retirement. Discrimination and equality legislation demonstrates that age as a listed ground for discrimination does not necessarily simplify the jurisprudence pertaining to it, especially where alternatives have been developed for continued employment. The main point of reference in the South African justice system concerning discrimination disputes is the Harksen v Lane test, whereas the principle encapsulated in Waco v Schweitzer, relates particularly to discrimination based on age. These judgements and subsequent application will be illustrated and considered during the course of this research. The influence of fund rules and fixed-term contracts on the situation will aim to show the reality of the situation. In an effort to show that the problem of an ageing workforce and retirement is not localised to South Africa, an international overview of other constitutional countries is included for context. The comparison goes further to include non-constitutional countries to illustrate the global issue. This comparison was also included in an effort to find alternative strategies that may be utilised in South Africa for retirement and age discrimination legislations and social policies.
- Full Text:
- Date Issued: 2017
Dismissal for operational requirements in the context of collective bargaining
- Authors: Mfaxa, Mncedisi
- Date: 2017
- Subjects: Collective bargaining -- South Africa , Collective bargaining -- Dismissal of Industrial relations -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: http://hdl.handle.net/10948/13923 , vital:27358
- Description: The highly competitive environment in which companies functions prompts the need to review their operations which may include reconsideration of the manning levels, and or changing terms and conditions of employment in order to be able to survive and prosper economically. The difficulty arises when the employers have to respond to the challenges. By law the employers are legally prohibited from unilaterally effecting the changes to the terms and conditions of employment. Furthermore, changing terms and conditions of employment is dealt with through collective bargaining and as such, the dismissal is outlawed as a legitimate instrument to coerce the employees to concede to the proposals. So the employers have to obtain an agreement or consent with the affected employees. In terms of the 1956 LRA the employer could justifiably terminate the contract of employment within the context of collective bargaining. For the employer to avoid offending the lock out provisions in terms of the 1956 LRA, the lock-out dismissal had to be effected in order to achieve a specific purpose, and it had to be conditional. Unlike its predecessor, the 1995 Labour Relations Act introduced section 187(1)(c) which renders the so-called lock-out dismissal by an employer, within the context of collective bargaining, automatically unfair. Section 187(1)(c) categorises a dismissal as automatically unfair, if the reason is a refusal by employees to accept a demand in respect of any matter of mutual interest between them and their employer. The employers are however permitted in terms of the 1995 LRA, to dismiss the employees based on operational grounds, as long as the requisite process has been adhered to. The employers need to restructure their operations in order to ensure that terms and conditions of employment are responsive to operational needs. Where the employees’ terms and conditions of employment are not in line with the company operational requirements, the need to terminate the employment contracts of the employees may arise. The employers are within their right to terminate the service of the employees who refuse to accept changes to their conditions of service based on the employers’ operational requirements. The court in Schoeman v Samsung Electronics confirmed that employer’s right to run its business in a successful manner, which includes affecting changes to the existing terms and conditions of employment to be aligned with the market demand. The dismissal is outlawed as a mechanism to coerce the employees to acceptance the employer’s demand relating to matters of mutual interest. At the same time, the employers are within their rights terminate the service of the employees who refuse to accept changes to their conditions of service based on the employers operational requirements. There is a clear tension between sections 187(1) (c), 188(1) (ii) and 189 of LRA. When the employers seek to review the terms and conditions of employment, the tension between these sections becomes more common, as it involves the matters of mutual interest which are dealt with through the collective bargaining arena and the dispute of right through arbitration. In Fry’s Metals v Numsa the court rejected the notion that there is tension between section 187(1) (c) and section 188(1) (a) (ii) of the LRA. Instead the court was of the view that, there is a historical context to section 187(1) (c) which is the now repealed 1956 Labour Relations Act. The 1956 LRA included in its definition of a lock-out the termination by the employer. Secondly, the court interpreted section 187(1)(C) to only give protection to employees who are dismissed in order to compel them to accept a demand on a matter of mutual interest, and only where the dismissal was of a temporary nature. The court interpretation in Fry’s metals implied that, section 187(1)(c) will only come to the defence of employees if they are dismissed for the purpose compelling them to accept a demand on a matter of mutual interest, and if the dismissal was of a temporary nature. Where a permanent dismissal is effected because employees would not accept its demands, section 187(1) (c) could not come to the employees’ protection. Considering that the lock out provided for in terms of the 1995 LRA is not a preferred option by most of the employers, they will rather resort to use the loophole created by the narrow interpretation of section 187(1)(c) to circumvent having to secure consensus from the affected employees and rather dismissed them based on operational requirements. This study seeks to deal with the questions relating to the relationship between collective bargaining related dismissals in particular the automatically unfair dismissal in terms of section 187(1) (c) and business restructuring related dismissal. As such the relationship between sections 187(1) (c) and dismissals based on operational requirements will be central to this study.
- Full Text:
- Date Issued: 2017
- Authors: Mfaxa, Mncedisi
- Date: 2017
- Subjects: Collective bargaining -- South Africa , Collective bargaining -- Dismissal of Industrial relations -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: http://hdl.handle.net/10948/13923 , vital:27358
- Description: The highly competitive environment in which companies functions prompts the need to review their operations which may include reconsideration of the manning levels, and or changing terms and conditions of employment in order to be able to survive and prosper economically. The difficulty arises when the employers have to respond to the challenges. By law the employers are legally prohibited from unilaterally effecting the changes to the terms and conditions of employment. Furthermore, changing terms and conditions of employment is dealt with through collective bargaining and as such, the dismissal is outlawed as a legitimate instrument to coerce the employees to concede to the proposals. So the employers have to obtain an agreement or consent with the affected employees. In terms of the 1956 LRA the employer could justifiably terminate the contract of employment within the context of collective bargaining. For the employer to avoid offending the lock out provisions in terms of the 1956 LRA, the lock-out dismissal had to be effected in order to achieve a specific purpose, and it had to be conditional. Unlike its predecessor, the 1995 Labour Relations Act introduced section 187(1)(c) which renders the so-called lock-out dismissal by an employer, within the context of collective bargaining, automatically unfair. Section 187(1)(c) categorises a dismissal as automatically unfair, if the reason is a refusal by employees to accept a demand in respect of any matter of mutual interest between them and their employer. The employers are however permitted in terms of the 1995 LRA, to dismiss the employees based on operational grounds, as long as the requisite process has been adhered to. The employers need to restructure their operations in order to ensure that terms and conditions of employment are responsive to operational needs. Where the employees’ terms and conditions of employment are not in line with the company operational requirements, the need to terminate the employment contracts of the employees may arise. The employers are within their right to terminate the service of the employees who refuse to accept changes to their conditions of service based on the employers’ operational requirements. The court in Schoeman v Samsung Electronics confirmed that employer’s right to run its business in a successful manner, which includes affecting changes to the existing terms and conditions of employment to be aligned with the market demand. The dismissal is outlawed as a mechanism to coerce the employees to acceptance the employer’s demand relating to matters of mutual interest. At the same time, the employers are within their rights terminate the service of the employees who refuse to accept changes to their conditions of service based on the employers operational requirements. There is a clear tension between sections 187(1) (c), 188(1) (ii) and 189 of LRA. When the employers seek to review the terms and conditions of employment, the tension between these sections becomes more common, as it involves the matters of mutual interest which are dealt with through the collective bargaining arena and the dispute of right through arbitration. In Fry’s Metals v Numsa the court rejected the notion that there is tension between section 187(1) (c) and section 188(1) (a) (ii) of the LRA. Instead the court was of the view that, there is a historical context to section 187(1) (c) which is the now repealed 1956 Labour Relations Act. The 1956 LRA included in its definition of a lock-out the termination by the employer. Secondly, the court interpreted section 187(1)(C) to only give protection to employees who are dismissed in order to compel them to accept a demand on a matter of mutual interest, and only where the dismissal was of a temporary nature. The court interpretation in Fry’s metals implied that, section 187(1)(c) will only come to the defence of employees if they are dismissed for the purpose compelling them to accept a demand on a matter of mutual interest, and if the dismissal was of a temporary nature. Where a permanent dismissal is effected because employees would not accept its demands, section 187(1) (c) could not come to the employees’ protection. Considering that the lock out provided for in terms of the 1995 LRA is not a preferred option by most of the employers, they will rather resort to use the loophole created by the narrow interpretation of section 187(1)(c) to circumvent having to secure consensus from the affected employees and rather dismissed them based on operational requirements. This study seeks to deal with the questions relating to the relationship between collective bargaining related dismissals in particular the automatically unfair dismissal in terms of section 187(1) (c) and business restructuring related dismissal. As such the relationship between sections 187(1) (c) and dismissals based on operational requirements will be central to this study.
- Full Text:
- Date Issued: 2017
Distribution of culturable vibrio species in freshwater resources of Cacadu, or Tambo and Chris Hani district municipalities
- Authors: Gaqavu, Sisipho
- Date: 2017
- Subjects: Vibrio--South Africa--Eastern Cape Vibrio infections--South Africa--Eastern Cape Foodborne diseases--South Africa--Eastern Cape
- Language: English
- Type: Thesis , Masters , Microbiology
- Identifier: http://hdl.handle.net/10353/11571 , vital:39085
- Description: Freshwater resources are essential to the survival of all living organisms and are used for numerous purposes such as domestic, industrial, agricultural and recreational activities. Nevertheless they are vulnerable to contamination including by pathogenic organisms. Among the pathogens distributed in water resources, diarrhoea causing pathogens such as Vibrio species are the most frequently encountered, hence, the aim of this study was to evaluate the incidence of pathogenic Vibrio species in freshwater resources in Cacadu, OR Tambo and Chris Hani District Municipalities. Water samples were collected from four rivers located in Cacadu, OR Tambo and Chris Hani District Municipalities in the Eastern Cape Province, South Africa. A total of 6 physicochemical parameterswere measured and includes: temperature, total dissolved solids (TDS), dissolved oxygen, turbidity, pH and electrical conductivity. Samples were collected between March and May 2016and concentrated using the standard membrane filtration technique and plated on TCBS agar. Yellow and green colonies on TCBS agar were enumerated as presumptive Vibrio species and expressed as CFU/100ml for each river. The identification of the presumptive Vibrio species and their antibiogram characteristics were done using both culture based and molecular techniques. The physicochemical qualities ranged as follows: pH (7.0-7.03), temperature (16 - 23 ºC), turbidity (15.6 – 43 NTU), electrical conductivity (61.1 – 835μS/cm), dissolved oxygen (7.34 – 8.73 mg/L), total dissolved solids (39.3 – 533.33 mg/L). Statistical analysis showed that pH, temperature, turbidity, dissolved oxygen were significantly different (P < 0.05), whereas the total dissolved solids were not significantly different (P ˃ 0.05) with respect to sampling sites. Vibrio densities ranged between 3.08 ×101-6.96 ×101 with Bloukrans River characterized by high counts compared to other rivers. Two hundred and three (203) positive Vibrio genus isolates were screened for speciation. Of these, the prevalent species found was V. cholerae (29percent) followed by V. vulnificus (4percent), V. fluvialis (4percent) and the least was V. parahaemolyticus (3percent). The remaining unidentified 60percent were alleged to belong to other Vibrio species not covered within the scope of this study. The antibiotic susceptibility profiles of confirmed Vibrio genus isolates recovered from the four rivers revealed that 83percent of Vibrio isolates in this study exhibited resistance againstthree or more antimicrobial agents. The presence of the following Vibrio pathogens V. fluvialis, V. cholerae, V. vulnificus and V. parahaemolyticus in water resources suggests that these water resources are significant reservoirs of Vibrio pathogens. Thus, there is a need for regular contamination monitoring programme of the selected water resources and other areas that might be of interest. In general, the results obtained from this study suggest that the river waters are not suitable for drinking, domestic or recreational use.
- Full Text:
- Date Issued: 2017
- Authors: Gaqavu, Sisipho
- Date: 2017
- Subjects: Vibrio--South Africa--Eastern Cape Vibrio infections--South Africa--Eastern Cape Foodborne diseases--South Africa--Eastern Cape
- Language: English
- Type: Thesis , Masters , Microbiology
- Identifier: http://hdl.handle.net/10353/11571 , vital:39085
- Description: Freshwater resources are essential to the survival of all living organisms and are used for numerous purposes such as domestic, industrial, agricultural and recreational activities. Nevertheless they are vulnerable to contamination including by pathogenic organisms. Among the pathogens distributed in water resources, diarrhoea causing pathogens such as Vibrio species are the most frequently encountered, hence, the aim of this study was to evaluate the incidence of pathogenic Vibrio species in freshwater resources in Cacadu, OR Tambo and Chris Hani District Municipalities. Water samples were collected from four rivers located in Cacadu, OR Tambo and Chris Hani District Municipalities in the Eastern Cape Province, South Africa. A total of 6 physicochemical parameterswere measured and includes: temperature, total dissolved solids (TDS), dissolved oxygen, turbidity, pH and electrical conductivity. Samples were collected between March and May 2016and concentrated using the standard membrane filtration technique and plated on TCBS agar. Yellow and green colonies on TCBS agar were enumerated as presumptive Vibrio species and expressed as CFU/100ml for each river. The identification of the presumptive Vibrio species and their antibiogram characteristics were done using both culture based and molecular techniques. The physicochemical qualities ranged as follows: pH (7.0-7.03), temperature (16 - 23 ºC), turbidity (15.6 – 43 NTU), electrical conductivity (61.1 – 835μS/cm), dissolved oxygen (7.34 – 8.73 mg/L), total dissolved solids (39.3 – 533.33 mg/L). Statistical analysis showed that pH, temperature, turbidity, dissolved oxygen were significantly different (P < 0.05), whereas the total dissolved solids were not significantly different (P ˃ 0.05) with respect to sampling sites. Vibrio densities ranged between 3.08 ×101-6.96 ×101 with Bloukrans River characterized by high counts compared to other rivers. Two hundred and three (203) positive Vibrio genus isolates were screened for speciation. Of these, the prevalent species found was V. cholerae (29percent) followed by V. vulnificus (4percent), V. fluvialis (4percent) and the least was V. parahaemolyticus (3percent). The remaining unidentified 60percent were alleged to belong to other Vibrio species not covered within the scope of this study. The antibiotic susceptibility profiles of confirmed Vibrio genus isolates recovered from the four rivers revealed that 83percent of Vibrio isolates in this study exhibited resistance againstthree or more antimicrobial agents. The presence of the following Vibrio pathogens V. fluvialis, V. cholerae, V. vulnificus and V. parahaemolyticus in water resources suggests that these water resources are significant reservoirs of Vibrio pathogens. Thus, there is a need for regular contamination monitoring programme of the selected water resources and other areas that might be of interest. In general, the results obtained from this study suggest that the river waters are not suitable for drinking, domestic or recreational use.
- Full Text:
- Date Issued: 2017
Diurnal and nocturnal activity patterns and habitat use of Algoa Bay’s rocky reef fish community
- Authors: Juby, Roxanne
- Date: 2017
- Subjects: Reef fishes -- Effect of light on , Reef fishes -- South Africa , Underwater videography in wildlife monitoring -- South Africa -- Tsitsikamma
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/44827 , vital:25445
- Description: Distinct day-night changes in ambient light are recognised as an important driver of animal activity patterns, with predictable changes to the structure and composition of animal communities between day and night. While day-night variation in the structure of animal communities has been well researched for terrestrial organisms and shallow marine fish communities around the world, there has been limited research of this type conducted on South Africa’s rocky reef fish communities. Consequently, we have a poor understanding of how nocturnal reef fish communities are structured and the day-night activity patterns of species inhabiting both shallow (10-30m) and deep-aphotic (55-100m) reefs. This research was conducted at two warm-temperate South African rocky reefs situated in Algoa Bay. The importance of natural ambient light in shaping the distribution of reef fish communities at shallow and deep-aphotic reef sites was demonstrated using baited remote underwater stereo-video systems (stereo-BRUVs). Distinct day and night fish communities were sampled at shallow and deep-aphotic reef sites. These differences were driven by significant changes in species richness (p < 0.001), species abundance (p < 0.001) and community composition (p < 0.001). These shifts appeared to be driven by day-night activity patterns that were the result of increased detectability of certain species at either day or night. The majority of species belonging to the family Sparidae showed evidence of strict diurnal activity, with their activity being further restricted to shallow reefs. These species showed evidence that they may enter micro-habitats within the reef at night. Similar activity patterns were shown for other top predatory teleost species and low level consumers, with substantial reductions in abundances, or no recordings at night throughout this study. Shallow reefs at day harboured the most diverse fish community. It is therefore hypothesised that this habitat was associated with conditions that offered improved access to resources for many visual species. In addition, the diverse community inhabiting shallow reefs at day is associated with a high risk of negative interspecies interactions, such as competition and predation. It is hypothesised that the biotic conditions associated with shallow reefs at day drove three movement patterns identified in this study; Pagellus bellottii natalensis showed evidence of movement onto shallow reefs at night from adjacent sandy flats, while Pterogymnus laniarius and Squalus sp. 1 showed evidence of movement onto shallow reefs at night from the deep- aphotic reefs that remain dark throughout the diel cycle. It is further hypothesised that other species which showed evidence for nocturnal activity, i.e. Galeichthys ater, Eptatretus hexatrema and Haploblepharus edwardsii, may enter sheltered micro-habitats within the reef during day light hours. These findings have highlighted the complex patterns that have evolved within marine fish to allow multiple species to coexist and exploit productive reef ecosystems by partitioning resource use and activity patterns at day or night, between depth zones and habitat types.
- Full Text:
- Date Issued: 2017
- Authors: Juby, Roxanne
- Date: 2017
- Subjects: Reef fishes -- Effect of light on , Reef fishes -- South Africa , Underwater videography in wildlife monitoring -- South Africa -- Tsitsikamma
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/44827 , vital:25445
- Description: Distinct day-night changes in ambient light are recognised as an important driver of animal activity patterns, with predictable changes to the structure and composition of animal communities between day and night. While day-night variation in the structure of animal communities has been well researched for terrestrial organisms and shallow marine fish communities around the world, there has been limited research of this type conducted on South Africa’s rocky reef fish communities. Consequently, we have a poor understanding of how nocturnal reef fish communities are structured and the day-night activity patterns of species inhabiting both shallow (10-30m) and deep-aphotic (55-100m) reefs. This research was conducted at two warm-temperate South African rocky reefs situated in Algoa Bay. The importance of natural ambient light in shaping the distribution of reef fish communities at shallow and deep-aphotic reef sites was demonstrated using baited remote underwater stereo-video systems (stereo-BRUVs). Distinct day and night fish communities were sampled at shallow and deep-aphotic reef sites. These differences were driven by significant changes in species richness (p < 0.001), species abundance (p < 0.001) and community composition (p < 0.001). These shifts appeared to be driven by day-night activity patterns that were the result of increased detectability of certain species at either day or night. The majority of species belonging to the family Sparidae showed evidence of strict diurnal activity, with their activity being further restricted to shallow reefs. These species showed evidence that they may enter micro-habitats within the reef at night. Similar activity patterns were shown for other top predatory teleost species and low level consumers, with substantial reductions in abundances, or no recordings at night throughout this study. Shallow reefs at day harboured the most diverse fish community. It is therefore hypothesised that this habitat was associated with conditions that offered improved access to resources for many visual species. In addition, the diverse community inhabiting shallow reefs at day is associated with a high risk of negative interspecies interactions, such as competition and predation. It is hypothesised that the biotic conditions associated with shallow reefs at day drove three movement patterns identified in this study; Pagellus bellottii natalensis showed evidence of movement onto shallow reefs at night from adjacent sandy flats, while Pterogymnus laniarius and Squalus sp. 1 showed evidence of movement onto shallow reefs at night from the deep- aphotic reefs that remain dark throughout the diel cycle. It is further hypothesised that other species which showed evidence for nocturnal activity, i.e. Galeichthys ater, Eptatretus hexatrema and Haploblepharus edwardsii, may enter sheltered micro-habitats within the reef during day light hours. These findings have highlighted the complex patterns that have evolved within marine fish to allow multiple species to coexist and exploit productive reef ecosystems by partitioning resource use and activity patterns at day or night, between depth zones and habitat types.
- Full Text:
- Date Issued: 2017
Donor funds and economic dependence: an investigation of community-driven development in the Eastern Cape, Chris Hani District Municipality
- Authors: Roto, Khanyile
- Date: 2017
- Subjects: Economic assistance -- South Africa -- Eastern Cape Non-governmental organizations -- South Africa -- Eastern Cape , Flow of funds -- South Africa -- Eastern Cape South Africa -- Economic conditions -- 21st century South Africa -- Politics and government -- 21st century
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/19982 , vital:29017
- Description: This research focused mainly on the progress of non-governmental organisations (NGOs) and community-driven development projects (CDDs) in assisting the Chris Hani District Municipality (CHDM) community. The research identified the main types of CDDs that are found in the CHDM as agricultural, caregivers, manufacturing, tourism, performing arts, and education services. Thirty-eight NGOs participated in this project with two participants representing each NGO. These NGOs were looked at from a thematic perspective. Three main themes emerged, namely; a) the quality of life in CHDM or specifically in the areas of operation of the NGOs, b) operations of the NGOs where the name and main objectives CDDs were identified, and c) challenges, funding and impact of the CDDs. This research set out to ask the following questions: What is the nature and origin of projects operational in Chris Hani District? What is the impact and sustainability of donor-aided projects on CDD in the Chris Hani District? Can NGO projects be sustained without donor aid? Are there any alternative forms of funding apart from donor funds? To answer these questions, a number of qualitative methods and techniques were used to collect and analyse data. These included focus group discussions with project beneficiaries, observations of projects, activities and individual project participants, and key informant interviews with different categories of respondents depending on their roles and level of involvement in the implementation of projects as well as their experience in the implementation of donor-aided programmes. These discussions were guided by different interview schedules with respective respondents. Random and snowball sampling methods were used to choose the respondents as well as groups that participated in the study. The research also focused on assessing the survivability of donor-aided NGO projects if the donor funds were discontinued for any reason. It sought to determine the continuity and feasibility of developmental projects and their impact on the socio- economic welfare of the rural poor in the Chris Hani District without donations. This research found evidence indicating that, by and large, NGOs in the Chris Hani District play a crucial role in CDD. Be that as it may, this research established that on average, 98 per cent of NGOs had been economically and socially affected by the donor-funded projects. It was established that, on average, the donor dependency ratio was 74 per cent. It was also seen that most donor-funded projects could only survive for 12 days if the funding was withdrawn. However, this hypothetical withdrawal of funds does not cause much concern because of the security found in the funding types of the NGOs in the Chris Hani District. In practical terms, these community-driven projects are likely to continue for decades ceteris paribus.
- Full Text:
- Date Issued: 2017
- Authors: Roto, Khanyile
- Date: 2017
- Subjects: Economic assistance -- South Africa -- Eastern Cape Non-governmental organizations -- South Africa -- Eastern Cape , Flow of funds -- South Africa -- Eastern Cape South Africa -- Economic conditions -- 21st century South Africa -- Politics and government -- 21st century
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: http://hdl.handle.net/10948/19982 , vital:29017
- Description: This research focused mainly on the progress of non-governmental organisations (NGOs) and community-driven development projects (CDDs) in assisting the Chris Hani District Municipality (CHDM) community. The research identified the main types of CDDs that are found in the CHDM as agricultural, caregivers, manufacturing, tourism, performing arts, and education services. Thirty-eight NGOs participated in this project with two participants representing each NGO. These NGOs were looked at from a thematic perspective. Three main themes emerged, namely; a) the quality of life in CHDM or specifically in the areas of operation of the NGOs, b) operations of the NGOs where the name and main objectives CDDs were identified, and c) challenges, funding and impact of the CDDs. This research set out to ask the following questions: What is the nature and origin of projects operational in Chris Hani District? What is the impact and sustainability of donor-aided projects on CDD in the Chris Hani District? Can NGO projects be sustained without donor aid? Are there any alternative forms of funding apart from donor funds? To answer these questions, a number of qualitative methods and techniques were used to collect and analyse data. These included focus group discussions with project beneficiaries, observations of projects, activities and individual project participants, and key informant interviews with different categories of respondents depending on their roles and level of involvement in the implementation of projects as well as their experience in the implementation of donor-aided programmes. These discussions were guided by different interview schedules with respective respondents. Random and snowball sampling methods were used to choose the respondents as well as groups that participated in the study. The research also focused on assessing the survivability of donor-aided NGO projects if the donor funds were discontinued for any reason. It sought to determine the continuity and feasibility of developmental projects and their impact on the socio- economic welfare of the rural poor in the Chris Hani District without donations. This research found evidence indicating that, by and large, NGOs in the Chris Hani District play a crucial role in CDD. Be that as it may, this research established that on average, 98 per cent of NGOs had been economically and socially affected by the donor-funded projects. It was established that, on average, the donor dependency ratio was 74 per cent. It was also seen that most donor-funded projects could only survive for 12 days if the funding was withdrawn. However, this hypothetical withdrawal of funds does not cause much concern because of the security found in the funding types of the NGOs in the Chris Hani District. In practical terms, these community-driven projects are likely to continue for decades ceteris paribus.
- Full Text:
- Date Issued: 2017
Drivers of employee engagement in a lean manufacturing environment during a period of change
- Authors: Rwodzi, Bright
- Date: 2017
- Subjects: Organizational change -- Management Employee motivation , Organizational behavior Work environment -- Employees Lean manufacturing -- Employees
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20559 , vital:29321
- Description: Purpose - The purpose of the study was to determine the drivers of employee engagement in a lean manufacturing environment during a period of change. It also highlighted the importance of employee engagement with regards to the improvement of organisational performance especially in a lean manufacturing environment during the change. Design/methodology/approach – The most frequently mentioned drivers of employee engagement in relation to change and a lean environment were identified through a literature study. The potential drivers that emerged were vision, leadership, communication, immediate supervisory behaviour, team collaboration and training/career development. An empirical study was then carried out to study the impact of these factors on affective commitment, volunteerism and sportsmanship, the latter two are components of organisational citizenship behaviour. A survey with a questionnaire was conducted amongst 86 employees in a lean manufacturing organisation, which was undergoing change. The data analyses included descriptive statistics, correlations and multiple regression analysis. Findings – It was observed that all the six identified drivers of employee engagement namely: Vision, Leadership, Communication, Immediate Supervisor Behaviour, Team Collaboration and Training and Career Development explained 61.2 per cent of the variance in the employee engagement. However, the variables that had the biggest impact on employee engagement were the articulation of the organisational change Vision, Team Collaboration and Immediate Supervisor Behaviour. Practical implications – The results of the study emphasise that special focus and effort must be placed on factors affecting Vision, Team Collaboration and Immediate Supervisor Behaviour as they have shown significantly higher influence on employee engagement in a lean manufacturing environment during a period of change.
- Full Text:
- Date Issued: 2017
- Authors: Rwodzi, Bright
- Date: 2017
- Subjects: Organizational change -- Management Employee motivation , Organizational behavior Work environment -- Employees Lean manufacturing -- Employees
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/20559 , vital:29321
- Description: Purpose - The purpose of the study was to determine the drivers of employee engagement in a lean manufacturing environment during a period of change. It also highlighted the importance of employee engagement with regards to the improvement of organisational performance especially in a lean manufacturing environment during the change. Design/methodology/approach – The most frequently mentioned drivers of employee engagement in relation to change and a lean environment were identified through a literature study. The potential drivers that emerged were vision, leadership, communication, immediate supervisory behaviour, team collaboration and training/career development. An empirical study was then carried out to study the impact of these factors on affective commitment, volunteerism and sportsmanship, the latter two are components of organisational citizenship behaviour. A survey with a questionnaire was conducted amongst 86 employees in a lean manufacturing organisation, which was undergoing change. The data analyses included descriptive statistics, correlations and multiple regression analysis. Findings – It was observed that all the six identified drivers of employee engagement namely: Vision, Leadership, Communication, Immediate Supervisor Behaviour, Team Collaboration and Training and Career Development explained 61.2 per cent of the variance in the employee engagement. However, the variables that had the biggest impact on employee engagement were the articulation of the organisational change Vision, Team Collaboration and Immediate Supervisor Behaviour. Practical implications – The results of the study emphasise that special focus and effort must be placed on factors affecting Vision, Team Collaboration and Immediate Supervisor Behaviour as they have shown significantly higher influence on employee engagement in a lean manufacturing environment during a period of change.
- Full Text:
- Date Issued: 2017
Drivers of sustainability disclosure in Liberty Holdings
- Authors: Chembeya, Edina Matamba
- Date: 2017
- Subjects: Liberty Holdings Limited (Firm) , Insurance companies -- South Africa -- Management , Risk management -- South Africa -- Case studies , Stakeholder management -- South Africa -- Case studies , Corporate culture -- South Africa -- Case studies , Product management -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/5579 , vital:20943
- Description: This research assesses the drivers of sustainability disclosure in Liberty Holdings. The relevance of reporting on sustainability is growing for both listed and non-listed companies in South Africa. However, many companies many companies still coming to terms with reporting process, although others are doing exceptionally well. Liberty Holdings is one of the insurance organisations that has continuously improved their sustainability reporting and disclosure of their sustainability issues, in a sector that previously perceived such concerns as low on their agenda, due to the perception that they had a low impact on the sector. The research findings reveal that the process of sustainability disclosure in Liberty Holdings is driven by several elements that are strategically linked and are aligned to the core strategy of the organisation. The findings also indicate that in order to understand and implement viable sustainability processes, the processes must be embedded in a well-informed sustainability strategy that is aligned with this core strategy.
- Full Text:
- Date Issued: 2017
- Authors: Chembeya, Edina Matamba
- Date: 2017
- Subjects: Liberty Holdings Limited (Firm) , Insurance companies -- South Africa -- Management , Risk management -- South Africa -- Case studies , Stakeholder management -- South Africa -- Case studies , Corporate culture -- South Africa -- Case studies , Product management -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/5579 , vital:20943
- Description: This research assesses the drivers of sustainability disclosure in Liberty Holdings. The relevance of reporting on sustainability is growing for both listed and non-listed companies in South Africa. However, many companies many companies still coming to terms with reporting process, although others are doing exceptionally well. Liberty Holdings is one of the insurance organisations that has continuously improved their sustainability reporting and disclosure of their sustainability issues, in a sector that previously perceived such concerns as low on their agenda, due to the perception that they had a low impact on the sector. The research findings reveal that the process of sustainability disclosure in Liberty Holdings is driven by several elements that are strategically linked and are aligned to the core strategy of the organisation. The findings also indicate that in order to understand and implement viable sustainability processes, the processes must be embedded in a well-informed sustainability strategy that is aligned with this core strategy.
- Full Text:
- Date Issued: 2017
Early stage ichthyofauna from shallow water habitats of the Angola-Benguela frontal zone
- Authors: Farthing, Matthew William
- Date: 2017
- Subjects: Fishes -- Larvae -- South Africa -- Atlantic coast , Fishes -- Larvae -- Angola -- Atlantic coast , Striped mullet -- Angola -- Atlantic coast
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/50442 , vital:25988
- Description: Early stage fishes (larvae and early juveniles) were collected from an array of shallow water (±1.5m) habitats on the warm-temperate southern Angolan coastline between June 2014 and June 2015. This study, the first assessment of the early stages of coastal fishes in Angola, provides important new understanding of non-estuarine shallow water nursery habitat use by coastal fishes from the region. In total, 51 species from 18 teleost families were observed. The exposed surf zone was dominated by postflexion larvae, while the moderately exposed beach and sheltered bay were dominated by early juveniles. Both fish density and diversity peaked in the wet season (Feb – Apr 2015) for all habitats, attributed to the influx of summer spawning species. Diplodus sargus dominated catches from the exposed surf zone, and the timing of observations supports the growing consensus that sparid spawning is dictated by temperature, not season. The similitude of the observed species to those observed in warm temperate South Africa highlights the historical connection of the warm-temperate study area with warm-temperate South Africa, prior to the formation of the Benguela Current as a vicariant barrier. The classification of the study assemblage into established estuarine utilization categories showed that the surf zone hosted more exclusively marine species than comparable surf zones in South Africa, attributed to the absence of estuaries in southern Angola. However, the observation of the marine estuarine dependent Mugil cephalus in this study area devoid of estuaries suggests that estuarine dependency may be regionally specific for some taxa. It appears that the warm, sheltered, nutrient rich waters of Tombua Bay provide typically estuarine associated taxa with a suitable alternative, non-estuarine nursery habitat. This study provides evidence that the importance of estuaries as critical nursery habitats has been overemphasized for some warm-temperate coastal fishes. However, the absence of other marine estuarine dependent species from the study area suggests that some warm-temperate taxa do intrinsically rely on estuarine function for survival.
- Full Text:
- Date Issued: 2017
- Authors: Farthing, Matthew William
- Date: 2017
- Subjects: Fishes -- Larvae -- South Africa -- Atlantic coast , Fishes -- Larvae -- Angola -- Atlantic coast , Striped mullet -- Angola -- Atlantic coast
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/50442 , vital:25988
- Description: Early stage fishes (larvae and early juveniles) were collected from an array of shallow water (±1.5m) habitats on the warm-temperate southern Angolan coastline between June 2014 and June 2015. This study, the first assessment of the early stages of coastal fishes in Angola, provides important new understanding of non-estuarine shallow water nursery habitat use by coastal fishes from the region. In total, 51 species from 18 teleost families were observed. The exposed surf zone was dominated by postflexion larvae, while the moderately exposed beach and sheltered bay were dominated by early juveniles. Both fish density and diversity peaked in the wet season (Feb – Apr 2015) for all habitats, attributed to the influx of summer spawning species. Diplodus sargus dominated catches from the exposed surf zone, and the timing of observations supports the growing consensus that sparid spawning is dictated by temperature, not season. The similitude of the observed species to those observed in warm temperate South Africa highlights the historical connection of the warm-temperate study area with warm-temperate South Africa, prior to the formation of the Benguela Current as a vicariant barrier. The classification of the study assemblage into established estuarine utilization categories showed that the surf zone hosted more exclusively marine species than comparable surf zones in South Africa, attributed to the absence of estuaries in southern Angola. However, the observation of the marine estuarine dependent Mugil cephalus in this study area devoid of estuaries suggests that estuarine dependency may be regionally specific for some taxa. It appears that the warm, sheltered, nutrient rich waters of Tombua Bay provide typically estuarine associated taxa with a suitable alternative, non-estuarine nursery habitat. This study provides evidence that the importance of estuaries as critical nursery habitats has been overemphasized for some warm-temperate coastal fishes. However, the absence of other marine estuarine dependent species from the study area suggests that some warm-temperate taxa do intrinsically rely on estuarine function for survival.
- Full Text:
- Date Issued: 2017
Earth stewardship in prepress:a model for Nelson Mandela Metropolitan University graphic design lectures
- Authors: Lottering,John Barry
- Date: 2017
- Subjects: Curriculum planning--South Africa-- Port Elizabeth Graphic arts--Study and teaching--South africa-- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/44471 , vital:37842
- Description: A lack of prepress understanding is responsible for a great deal of wasted resources in the graphic design and printing industries in Nelson Mandela Bay. As the term “prepress” extends to such a vast range of design activities, it is quite difficult to ascertain where prepress begins or ends. Asking the question “What is prepress?” is like asking “How long is a piece of string?” Defining the scope of prepress can present a formidable challenge for any graphic design lecturer hoping to equip students with the necessary prepress understanding and skills required by the graphic design industry. Also, even if the academic has a sound knowledge of prepress theory and practice, how does one guarantee that all of the required knowledge is covered during the course of the student’s graphic design education, and that it is done so in a manner that meets the needs of the graphic design industry? Added to this, educators have a responsibility to consider the environmental consequences of sending graduating designers, without industry required prepress knowledge, into the design industry, an industry that has grown accustomed to training junior designers in prepress practice through trial and error. Such trial and error equates to mistakes and wasted resources, as a result this learning curve comes at the expense of the environment. The intention of this research is to provide an accessible resource for graphic design lecturers, by way of a list of prepress best practice topics, required for inclusion in the graphic design syllabus at NMMU, such that earth stewardship and sustainable design-for-print are an implicit component. This list of topics is a product of research which drew on local industry experts in Nelson Mandela Bay.
- Full Text:
- Date Issued: 2017
- Authors: Lottering,John Barry
- Date: 2017
- Subjects: Curriculum planning--South Africa-- Port Elizabeth Graphic arts--Study and teaching--South africa-- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/44471 , vital:37842
- Description: A lack of prepress understanding is responsible for a great deal of wasted resources in the graphic design and printing industries in Nelson Mandela Bay. As the term “prepress” extends to such a vast range of design activities, it is quite difficult to ascertain where prepress begins or ends. Asking the question “What is prepress?” is like asking “How long is a piece of string?” Defining the scope of prepress can present a formidable challenge for any graphic design lecturer hoping to equip students with the necessary prepress understanding and skills required by the graphic design industry. Also, even if the academic has a sound knowledge of prepress theory and practice, how does one guarantee that all of the required knowledge is covered during the course of the student’s graphic design education, and that it is done so in a manner that meets the needs of the graphic design industry? Added to this, educators have a responsibility to consider the environmental consequences of sending graduating designers, without industry required prepress knowledge, into the design industry, an industry that has grown accustomed to training junior designers in prepress practice through trial and error. Such trial and error equates to mistakes and wasted resources, as a result this learning curve comes at the expense of the environment. The intention of this research is to provide an accessible resource for graphic design lecturers, by way of a list of prepress best practice topics, required for inclusion in the graphic design syllabus at NMMU, such that earth stewardship and sustainable design-for-print are an implicit component. This list of topics is a product of research which drew on local industry experts in Nelson Mandela Bay.
- Full Text:
- Date Issued: 2017
Eco-tourism and sustainable rural livelihoods in Hogsback, Eastern Cape, South Africa
- Authors: Pikirai, Kelvin Tinashe
- Date: 2017
- Subjects: Ecotourism -- Economic aspects -- South Africa -- Eastern Cape Community development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5510 , vital:29298
- Description: This study investigates the livelihoods impacts of eco-tourism in Hogsback, the extent to which local community members are effectively participating in eco-tourism activities as well as the negative implications of ecotourism in Hogsback. A qualitative research methodology was employed in order to have a deeper understanding of the issues under study. Simple random sampling and purposive sampling techniques were used to select respondents. In-depth semi structured interviews were used to collect data from 40 respondents and 6 key informants. The study established that eco-tourism activities help mainly individuals rather than the whole community at large and those who benefit; it improves their lives as well as benefiting the economy of the country. This study also found out that the government plays a role to promote development of ecotourism in the community, this is through infrastructure development and providing services for tourism. Lastly the study found out that there are conflicts over ownership of eco-tourism activities, limited funds in promotion of eco-tourism activities and that there is no eco-tourism development strategy. The study recommends that the government of South Africa should design and implement a comprehensive eco-tourism development strategy that puts people at the core.
- Full Text:
- Date Issued: 2017
- Authors: Pikirai, Kelvin Tinashe
- Date: 2017
- Subjects: Ecotourism -- Economic aspects -- South Africa -- Eastern Cape Community development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5510 , vital:29298
- Description: This study investigates the livelihoods impacts of eco-tourism in Hogsback, the extent to which local community members are effectively participating in eco-tourism activities as well as the negative implications of ecotourism in Hogsback. A qualitative research methodology was employed in order to have a deeper understanding of the issues under study. Simple random sampling and purposive sampling techniques were used to select respondents. In-depth semi structured interviews were used to collect data from 40 respondents and 6 key informants. The study established that eco-tourism activities help mainly individuals rather than the whole community at large and those who benefit; it improves their lives as well as benefiting the economy of the country. This study also found out that the government plays a role to promote development of ecotourism in the community, this is through infrastructure development and providing services for tourism. Lastly the study found out that there are conflicts over ownership of eco-tourism activities, limited funds in promotion of eco-tourism activities and that there is no eco-tourism development strategy. The study recommends that the government of South Africa should design and implement a comprehensive eco-tourism development strategy that puts people at the core.
- Full Text:
- Date Issued: 2017