Antiproliferative activity of novel rhenium complexes and medicinal plant extracts
- Oosthuizen, Kenneth Thomas, Venables, Luanne
- Authors: Oosthuizen, Kenneth Thomas , Venables, Luanne
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Medicinal plants -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52028 , vital:43441
- Description: Cancer is a complex, multifactorial disease that affects millions of individuals every year. The adverse side effects and escalating costs of current therapies coupled with the increased incidence of resistance to these therapies make it imperative that we explore novel treatments for the disease. This study investigated two avenues for novel drug design namely, novel synthetic compounds and medicinal plant extracts. The benzimidazole ring system has shown potential as a scaffold for designing novel anticancer agents. Conjugation of the metal rhenium to novel variants of this ring system open up the possibility of designing novel drugs that serve both a diagnostic and a therapeutic function. This study investigated the in vitro anticancer potential of ten such complexes against selected breast and cervical cancer cell lines. The selectivity of the complexes for cancer cells over normal cells was also investigated while the mechanism of action of effective complexes was determined by exploring cell cycle arrest, biochemical markers of apoptosis and mitochondrial membrane disruption. All ten complexes were screened against MCF7 breast and HeLa cervical cancer cell lines with four showing antiproliferative activity against both cancer cell lines and one showing cell line specific toxicity against MCF7 breast cancer cells. When looking at the SAR of the compounds it was noted that activity was higher in compounds which contain two potentially bidentate benzothiazole ligands, while compounds with potentially tridentate ligands show good activity, but only if the benzothiazole moiety is not involved in coordination. The complexes showed greater antiproliferative activity against the MCF7 breast cancer cells with IC50 values ranging from 3.2 to 7.0 µM versus a range of 7.6 to 24.4 µM being obtained on the HeLa cervical cancer cells. Antiproliferative complexes were tested against confluent and log phase Vero cells at their respective IC50 values to determine their effect on “normal” cells. Confluent Vero cells showed less cell death than those in log phase indicating that the complexes show preference for proliferating cells. The mechanism of action of the complexes was studied on both cancer cell lines via cell cycle analysis and apoptosis assays investigating phosphatidylserine translocation, caspase -3 and -8 activation and mitochondrial membrane potential with most complexes inducing cell cycle arrest followed by cell death via both the extrinsic and intrinsic pathways of apoptosis. Since 1940, 49% of all the available anticancer drugs approved for cancer treatment were natural products or directly derived from natural products. Plants are an excellent source of secondary metabolites, many of which are unique chemical compounds that cannot be synthesized in a laboratory. Ethnobotanical surveys conducted in conjunction with Traditional Health Practitioners of the Mkuranga and Same districts in Tanzania identified 25 plants that are used for the treatment of cancer. Four of these plants (A. mossambicensis, C. adenocaule, C. pseudopulchelusis and R. natalensis) with ethnobotanically reported anticancer usage showed cytotoxic activity against brine shrimp and were selected for further in vitro anticancer studies. All four plants were found to have antiproliferative activity against HeLa cervical cancer cells with IC50 values ranging from 3.4 to 50.8 µg/mL. This study was also tasked with investigating the mechanism of action of C. pseudopulchelus on HeLa cervical cancer cells by exploring cell cycle arrest, biochemical markers of apoptosis and mitochondrial membrane x disruption. C. pseudopulchelus caused early M phase arrest followed by slippage and subsequent cell death via the extrinsic pathway of apoptosis. In conclusion, this study showed that both novel complexes as well as medicinal plant extracts represent an interesting avenue for the development of novel anticancer drugs that are cheaper and produce less side effects than current therapies. , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Oosthuizen, Kenneth Thomas , Venables, Luanne
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Medicinal plants -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52028 , vital:43441
- Description: Cancer is a complex, multifactorial disease that affects millions of individuals every year. The adverse side effects and escalating costs of current therapies coupled with the increased incidence of resistance to these therapies make it imperative that we explore novel treatments for the disease. This study investigated two avenues for novel drug design namely, novel synthetic compounds and medicinal plant extracts. The benzimidazole ring system has shown potential as a scaffold for designing novel anticancer agents. Conjugation of the metal rhenium to novel variants of this ring system open up the possibility of designing novel drugs that serve both a diagnostic and a therapeutic function. This study investigated the in vitro anticancer potential of ten such complexes against selected breast and cervical cancer cell lines. The selectivity of the complexes for cancer cells over normal cells was also investigated while the mechanism of action of effective complexes was determined by exploring cell cycle arrest, biochemical markers of apoptosis and mitochondrial membrane disruption. All ten complexes were screened against MCF7 breast and HeLa cervical cancer cell lines with four showing antiproliferative activity against both cancer cell lines and one showing cell line specific toxicity against MCF7 breast cancer cells. When looking at the SAR of the compounds it was noted that activity was higher in compounds which contain two potentially bidentate benzothiazole ligands, while compounds with potentially tridentate ligands show good activity, but only if the benzothiazole moiety is not involved in coordination. The complexes showed greater antiproliferative activity against the MCF7 breast cancer cells with IC50 values ranging from 3.2 to 7.0 µM versus a range of 7.6 to 24.4 µM being obtained on the HeLa cervical cancer cells. Antiproliferative complexes were tested against confluent and log phase Vero cells at their respective IC50 values to determine their effect on “normal” cells. Confluent Vero cells showed less cell death than those in log phase indicating that the complexes show preference for proliferating cells. The mechanism of action of the complexes was studied on both cancer cell lines via cell cycle analysis and apoptosis assays investigating phosphatidylserine translocation, caspase -3 and -8 activation and mitochondrial membrane potential with most complexes inducing cell cycle arrest followed by cell death via both the extrinsic and intrinsic pathways of apoptosis. Since 1940, 49% of all the available anticancer drugs approved for cancer treatment were natural products or directly derived from natural products. Plants are an excellent source of secondary metabolites, many of which are unique chemical compounds that cannot be synthesized in a laboratory. Ethnobotanical surveys conducted in conjunction with Traditional Health Practitioners of the Mkuranga and Same districts in Tanzania identified 25 plants that are used for the treatment of cancer. Four of these plants (A. mossambicensis, C. adenocaule, C. pseudopulchelusis and R. natalensis) with ethnobotanically reported anticancer usage showed cytotoxic activity against brine shrimp and were selected for further in vitro anticancer studies. All four plants were found to have antiproliferative activity against HeLa cervical cancer cells with IC50 values ranging from 3.4 to 50.8 µg/mL. This study was also tasked with investigating the mechanism of action of C. pseudopulchelus on HeLa cervical cancer cells by exploring cell cycle arrest, biochemical markers of apoptosis and mitochondrial membrane x disruption. C. pseudopulchelus caused early M phase arrest followed by slippage and subsequent cell death via the extrinsic pathway of apoptosis. In conclusion, this study showed that both novel complexes as well as medicinal plant extracts represent an interesting avenue for the development of novel anticancer drugs that are cheaper and produce less side effects than current therapies. , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2021
- Full Text: false
- Date Issued: 2021-04
Representations of trauma by three women writers from the global south
- Authors: Pabel, Annemarie Luise
- Date: 2020-04
- Subjects: Women authors (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctor's theses , text
- Identifier: http://hdl.handle.net/10948/55128 , vital:49131
- Description: This study examines modalities of psychological trauma in selected works by three women writers from the global South: the Scottish-Sierra Leonean writer Aminatta Forna, the ChileanAmerican author Isabel Allende and Anuradha Roy from India. It aims to examine textual manifestations of complex and prolonged experiences of trauma and the ways in which literary forms facilitate such representations. Specifically, I am interested in multi-layered and interrelated forms of trauma which exceed the conventional, event-based conceptualization of trauma as an “overwhelming experience of sudden or catastrophic events” (Caruth 1996:11). 1 Such experiences include war, exile, extensive childhood sexual abuse, maternal bereavement and familial disintegration. I have selected three texts from each author’s body of literary work: Forna’s memoir The Devil that Danced on the Water: a Daughter’s Quest (2003) and her novels The Memory of Love (2010) and Happiness (2010), Allende’s memoirs Paula (1994), My Invented Country (2004) and Portrait in Sepia (2000) and Roy’s novels An Atlas of Impossible Longing (2008), Sleeping on Jupiter (2015) and All the Lives We Never Lived (2018). The study’s focus on women writers from different contexts in the global South is motivated by an imbalance in critical attention and validation extreme forms of suffering receive globally. , Thesis (PhD) -- Faculty of Humanities, School of Language, Media and Communication, 2020
- Full Text:
- Date Issued: 2020-04
- Authors: Pabel, Annemarie Luise
- Date: 2020-04
- Subjects: Women authors (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Doctor's theses , text
- Identifier: http://hdl.handle.net/10948/55128 , vital:49131
- Description: This study examines modalities of psychological trauma in selected works by three women writers from the global South: the Scottish-Sierra Leonean writer Aminatta Forna, the ChileanAmerican author Isabel Allende and Anuradha Roy from India. It aims to examine textual manifestations of complex and prolonged experiences of trauma and the ways in which literary forms facilitate such representations. Specifically, I am interested in multi-layered and interrelated forms of trauma which exceed the conventional, event-based conceptualization of trauma as an “overwhelming experience of sudden or catastrophic events” (Caruth 1996:11). 1 Such experiences include war, exile, extensive childhood sexual abuse, maternal bereavement and familial disintegration. I have selected three texts from each author’s body of literary work: Forna’s memoir The Devil that Danced on the Water: a Daughter’s Quest (2003) and her novels The Memory of Love (2010) and Happiness (2010), Allende’s memoirs Paula (1994), My Invented Country (2004) and Portrait in Sepia (2000) and Roy’s novels An Atlas of Impossible Longing (2008), Sleeping on Jupiter (2015) and All the Lives We Never Lived (2018). The study’s focus on women writers from different contexts in the global South is motivated by an imbalance in critical attention and validation extreme forms of suffering receive globally. , Thesis (PhD) -- Faculty of Humanities, School of Language, Media and Communication, 2020
- Full Text:
- Date Issued: 2020-04
An assessment of the key factors that may impact the future demand for red meat in South Africa
- Authors: Pearce, Nathan
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53019 , vital:44887
- Description: The global human population is estimated to be in excess of nine billion by the year 2050, and the added population is expected to put further pressure on already over- extended resources such as food and water. Increased demand, positive growth and record high prices should be encouraging for the red meat industry. Despite all the positives such as the growth in the world population and the consumer’s ability to spend, the popularity of red meat around the world and in South Africa is continually declining in favour of white meat and other non-meat proteins. Although red meat will often be the most expensive component of any diet, the nutritional value that red meat offers as part of a healthy and balanced eating plan, should not be understated. This study intends to identify and assess factors that may impact on the future sustainable demand for red meat. Sixty-two adults were surveyed through an electronic questionnaire to assess their views on red meat consumption in South Africa. A set of 52 questions were deduced from the main focus and objectives. The data was analysed and conclusions derived from it. The results show that the demand for red meat is sustainable if outlets selling red meat are accessible and the preference for red meat remains, even with stiff competition from substitutes like pork, chicken and vegetables. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Pearce, Nathan
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53019 , vital:44887
- Description: The global human population is estimated to be in excess of nine billion by the year 2050, and the added population is expected to put further pressure on already over- extended resources such as food and water. Increased demand, positive growth and record high prices should be encouraging for the red meat industry. Despite all the positives such as the growth in the world population and the consumer’s ability to spend, the popularity of red meat around the world and in South Africa is continually declining in favour of white meat and other non-meat proteins. Although red meat will often be the most expensive component of any diet, the nutritional value that red meat offers as part of a healthy and balanced eating plan, should not be understated. This study intends to identify and assess factors that may impact on the future sustainable demand for red meat. Sixty-two adults were surveyed through an electronic questionnaire to assess their views on red meat consumption in South Africa. A set of 52 questions were deduced from the main focus and objectives. The data was analysed and conclusions derived from it. The results show that the demand for red meat is sustainable if outlets selling red meat are accessible and the preference for red meat remains, even with stiff competition from substitutes like pork, chicken and vegetables. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
An exploration of the memorandum of understanding between the Mberengwa rural district council and the Mberengwa community : a conflict resolution perspective
- Authors: Pedro, Jean
- Date: 2020-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55139 , vital:49148
- Description: This study is motivated by a gap in a competent framework to adequately compensate communities whose land are expropriated for public use by the Government of Zimbabwe. It seeks to explore the extent to which the Memorandum of Understanding between the Mberengwa Rural District Council and the affected people of Mberengwa resulted in a fair and adequate compensation which specifically provided for rehabilitated livelihoods. The main objective is to determine whether the compensation was adequate and satisfying for the Mberengwa community and to this end, a qualitative methodology is utilised to collect and analyse data. The findings reveal that the Memorandum of Understanding did not provide for adequate land that adequately compensated for the expropriated land. The affected community also did not benefit from a possible rehabilitation of livelihoods. By the end of the study, the Mberengwa compensation had not been concluded and the programme, which was expected to be completed in October 2015, had not closed. The researcher recommends a competent project management strategy, PRINCE2 to ensure comprehensive planning that ensures stage-based delivery of the agreed compensation products. Another recommendation involved in-depth problem-solving workshops, which involves all affected members to increase the chances of success. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
- Authors: Pedro, Jean
- Date: 2020-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55139 , vital:49148
- Description: This study is motivated by a gap in a competent framework to adequately compensate communities whose land are expropriated for public use by the Government of Zimbabwe. It seeks to explore the extent to which the Memorandum of Understanding between the Mberengwa Rural District Council and the affected people of Mberengwa resulted in a fair and adequate compensation which specifically provided for rehabilitated livelihoods. The main objective is to determine whether the compensation was adequate and satisfying for the Mberengwa community and to this end, a qualitative methodology is utilised to collect and analyse data. The findings reveal that the Memorandum of Understanding did not provide for adequate land that adequately compensated for the expropriated land. The affected community also did not benefit from a possible rehabilitation of livelihoods. By the end of the study, the Mberengwa compensation had not been concluded and the programme, which was expected to be completed in October 2015, had not closed. The researcher recommends a competent project management strategy, PRINCE2 to ensure comprehensive planning that ensures stage-based delivery of the agreed compensation products. Another recommendation involved in-depth problem-solving workshops, which involves all affected members to increase the chances of success. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
Estimating activity patterns in camera trap studies, and the overlap between domestic and indigenous ungulates
- Authors: Peral, Christopher Michael
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Ungulates -- Behavior -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52019 , vital:43437
- Description: Animal activity can reveal responses to social and ecological factors such as the presence of food, water, shelter, predators, competitors or conspecifics. Thus, an understanding of an animal’s activity patterns provides insights into how and why they are using landscapes in the manner in which they do. Camera trap surveys, typically used to record the occurrence of species of interest, are also an efficient way to collect data regarding animal activity patterns but require robust analytical methods. The analysis of camera trap data requires assumptions that may differ for camera trap surveys that estimate occurrence or activity. One such assumption is temporal independence. This refers to the removal of images within a specified time interval, as these images are assumed to be images of the same individual. This assumption stems from the use of-time-to-independence in occurrence or density-based studies, where it reduces overestimation of animal counts. In studies of animal activity, this assumption is generally used, even though animal behaviour or activity occurs continuously over time and as such should be measured over time. I analysed 112 467 images of eight cooccurring species, to test the effect across various times to independence, these being set at 1, 5, 10, 15, 30 and 60 minutes. Time-to-independence resulted in significant loss of data and biased the interpretation of the activity patterns of species and interactions amongst species, particularly for herbivorous social species. In light of these findings, activity pattern estimates based on camera trap studies should be cautious when using time-to-independence. I then explore ‘habitat use’ in space and time by domestic and indigenous ungulates using a camera trap survey. Domestic ungulates (livestock) have become common place on rangelands and may compete with native species. It was hypothesised that there will be overlap in habitat use by livestock and indigenous ungulates. My results show that indigenous ungulate species, particularly larger species such as kudu (Tragelaphus strepsiceros) and springbok (Antidorcas marsupialis), changed their spatial and temporal use as a result of the presence of domestic ungulates. Other smaller indigenous ungulates, such as steenbok (Raphicerus campestris) and duiker (Sylvicapra grimmia), were less affected by the presence of livestock. Kudu were found to use more open habitats at different times whilst springbok used more dense habitats at different times in the presence of livestock. This supports the hypothesis of competition between livestock and indigenous ungulates. This study provides novel insight into the analysis and interpretation of activity patterns based on camera trap surveys. Additionally, this study demonstrates the competitive displacement between domestic and indigenous ungulate species. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Peral, Christopher Michael
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Ungulates -- Behavior -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52019 , vital:43437
- Description: Animal activity can reveal responses to social and ecological factors such as the presence of food, water, shelter, predators, competitors or conspecifics. Thus, an understanding of an animal’s activity patterns provides insights into how and why they are using landscapes in the manner in which they do. Camera trap surveys, typically used to record the occurrence of species of interest, are also an efficient way to collect data regarding animal activity patterns but require robust analytical methods. The analysis of camera trap data requires assumptions that may differ for camera trap surveys that estimate occurrence or activity. One such assumption is temporal independence. This refers to the removal of images within a specified time interval, as these images are assumed to be images of the same individual. This assumption stems from the use of-time-to-independence in occurrence or density-based studies, where it reduces overestimation of animal counts. In studies of animal activity, this assumption is generally used, even though animal behaviour or activity occurs continuously over time and as such should be measured over time. I analysed 112 467 images of eight cooccurring species, to test the effect across various times to independence, these being set at 1, 5, 10, 15, 30 and 60 minutes. Time-to-independence resulted in significant loss of data and biased the interpretation of the activity patterns of species and interactions amongst species, particularly for herbivorous social species. In light of these findings, activity pattern estimates based on camera trap studies should be cautious when using time-to-independence. I then explore ‘habitat use’ in space and time by domestic and indigenous ungulates using a camera trap survey. Domestic ungulates (livestock) have become common place on rangelands and may compete with native species. It was hypothesised that there will be overlap in habitat use by livestock and indigenous ungulates. My results show that indigenous ungulate species, particularly larger species such as kudu (Tragelaphus strepsiceros) and springbok (Antidorcas marsupialis), changed their spatial and temporal use as a result of the presence of domestic ungulates. Other smaller indigenous ungulates, such as steenbok (Raphicerus campestris) and duiker (Sylvicapra grimmia), were less affected by the presence of livestock. Kudu were found to use more open habitats at different times whilst springbok used more dense habitats at different times in the presence of livestock. This supports the hypothesis of competition between livestock and indigenous ungulates. This study provides novel insight into the analysis and interpretation of activity patterns based on camera trap surveys. Additionally, this study demonstrates the competitive displacement between domestic and indigenous ungulate species. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2021
- Full Text: false
- Date Issued: 2021-04
Driving factors of mobile banking application in South Africa
- Authors: Peter, Unati
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52984 , vital:44885
- Description: There has been a gaping variance between the number of mobile phone users and landline users in South Africa (RSA). Results from an assessment in 2011 suggested that 29 million South Africans subscribed to mobile phones versus 5 million landline users (Balabanoff, 2014). The exponential growth of mobile applications has been precipitated by the increased growth of the mobile phone market. This growth is coupled with numerous advantages that mobile services bring to the user, such as better operability, productivity advances and entertainment (Balabanoff, 2014). Even though adoption strategies regarding mobile banking have been studied in various parts of the world, acceptance of mobile banking applications in South Africa has not been greatly researched. Hence, this study focused on exploring consumer behaviour and acceptance towards adopting mobile banking in South Africa, where mobile banking is at an elementary stage, but provides potential benefits to both users and business at large. A quantitative research style was followed by this research. An electronic quantitative questionnaire was distributed to South African civilians who are eligible to hold bank accounts in their own names. The research was then conducted on a sample size of 86 respondents. Due to limitations on time, this study utilised convenience sampling. Data gathered from the questionnaires was examined using statistical analysis to scrutinise the correlation between the variables used in the research model, this being Unified Theory of Acceptance and Use of Technology (UTAUT) model. The UTAUT is commonly used to predict and explain factors that influence the adoption of technology by users. These factors help decision-makers in formulating technology acceptance strategies. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Peter, Unati
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52984 , vital:44885
- Description: There has been a gaping variance between the number of mobile phone users and landline users in South Africa (RSA). Results from an assessment in 2011 suggested that 29 million South Africans subscribed to mobile phones versus 5 million landline users (Balabanoff, 2014). The exponential growth of mobile applications has been precipitated by the increased growth of the mobile phone market. This growth is coupled with numerous advantages that mobile services bring to the user, such as better operability, productivity advances and entertainment (Balabanoff, 2014). Even though adoption strategies regarding mobile banking have been studied in various parts of the world, acceptance of mobile banking applications in South Africa has not been greatly researched. Hence, this study focused on exploring consumer behaviour and acceptance towards adopting mobile banking in South Africa, where mobile banking is at an elementary stage, but provides potential benefits to both users and business at large. A quantitative research style was followed by this research. An electronic quantitative questionnaire was distributed to South African civilians who are eligible to hold bank accounts in their own names. The research was then conducted on a sample size of 86 respondents. Due to limitations on time, this study utilised convenience sampling. Data gathered from the questionnaires was examined using statistical analysis to scrutinise the correlation between the variables used in the research model, this being Unified Theory of Acceptance and Use of Technology (UTAUT) model. The UTAUT is commonly used to predict and explain factors that influence the adoption of technology by users. These factors help decision-makers in formulating technology acceptance strategies. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
Community development and sustainable livelihoods: the Jeffrey’s Bay wind farm bee-keeping initiative, South Africa
- Authors: Phillip, Busisiwe
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53033 , vital:44886
- Description: The Renewable Energy Independent Power Producer Procurement (REIPPP) policy requirements set by the South Africa Government have shaped the responsibility of the socio-economic trajectory to include various stakeholders in the economy, such as the private sector companies that operate in and around areas affected by poverty and unemployment. The Eastern Cape is among the provinces of South Africa that are trapped in poverty (Edwards, 2003). The Eastern Cape Socio-Economic Consultative Council (2019) reported that in the first quarter of 2019 the Eastern Cape had the highest unemployment rate (34.7%) in the country and that the youth unemployment rate was at 50.8%; a record high. The Kouga Municipality, which is where the Rooidraai community is situated in Ward 13, has a population of 98 558 people of which 38 412 are economically active and of these, 21.5% are unemployed (StatsSA, 2019). In view of this, there seems to be a problem addressing poverty in the Eastern Cape, especially in rural communities. The aim of this study was to investigate if the Jeffrey’s Bay Wind Farm (JBWF) can create initiatives aimed at sustainable community development. In doing so, the research question will be answered, which entails investigating ways that the leaders of the Jeffrey’s Bay Wind Farm project can employ to improve the beekeeping initiative’s outcomes and perhaps launch future initiatives that are aimed at developing communities. The Rooidraai community was the study’s area of research. This area was chosen because the beekeeping initiative is mainly situated in this community and also because the majority of the beneficiaries are situated in this area. The dearth of research on issues pertaining to community development and sustainable livelihoods through beekeeping was a motivating factor to conduct the study. The problem statement highlighted that private sector companies are not particularly well versed with regard to community development approaches that deal with beneficiaries of projects that are imposed upon them that result in undesired outcomes that could have been avoided had proper processes been followed. The study used the theories of community development and sustainable livelihoods to assist in the research problem statement as these theories deal with issues of human development which have proposed approaches such as bottom-up development, self-reliance and giving voice to people at grassroots level. The study employed the qualitative approach due to its non-emergent nature and also the ability to predetermine methods of data collection and analysis through which semi-structured interviews, observations and field notes were employed as data collection tools and a thematic analysis and SLF analysis approaches were used as approaches for analysing the data. The study employed purposive sampling to which eight members of the beekeeping project made the sample size. , Thesis (MA) -- Faculty of Business and Economic Sciences, School of Economics, Development and Tourism, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Phillip, Busisiwe
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53033 , vital:44886
- Description: The Renewable Energy Independent Power Producer Procurement (REIPPP) policy requirements set by the South Africa Government have shaped the responsibility of the socio-economic trajectory to include various stakeholders in the economy, such as the private sector companies that operate in and around areas affected by poverty and unemployment. The Eastern Cape is among the provinces of South Africa that are trapped in poverty (Edwards, 2003). The Eastern Cape Socio-Economic Consultative Council (2019) reported that in the first quarter of 2019 the Eastern Cape had the highest unemployment rate (34.7%) in the country and that the youth unemployment rate was at 50.8%; a record high. The Kouga Municipality, which is where the Rooidraai community is situated in Ward 13, has a population of 98 558 people of which 38 412 are economically active and of these, 21.5% are unemployed (StatsSA, 2019). In view of this, there seems to be a problem addressing poverty in the Eastern Cape, especially in rural communities. The aim of this study was to investigate if the Jeffrey’s Bay Wind Farm (JBWF) can create initiatives aimed at sustainable community development. In doing so, the research question will be answered, which entails investigating ways that the leaders of the Jeffrey’s Bay Wind Farm project can employ to improve the beekeeping initiative’s outcomes and perhaps launch future initiatives that are aimed at developing communities. The Rooidraai community was the study’s area of research. This area was chosen because the beekeeping initiative is mainly situated in this community and also because the majority of the beneficiaries are situated in this area. The dearth of research on issues pertaining to community development and sustainable livelihoods through beekeeping was a motivating factor to conduct the study. The problem statement highlighted that private sector companies are not particularly well versed with regard to community development approaches that deal with beneficiaries of projects that are imposed upon them that result in undesired outcomes that could have been avoided had proper processes been followed. The study used the theories of community development and sustainable livelihoods to assist in the research problem statement as these theories deal with issues of human development which have proposed approaches such as bottom-up development, self-reliance and giving voice to people at grassroots level. The study employed the qualitative approach due to its non-emergent nature and also the ability to predetermine methods of data collection and analysis through which semi-structured interviews, observations and field notes were employed as data collection tools and a thematic analysis and SLF analysis approaches were used as approaches for analysing the data. The study employed purposive sampling to which eight members of the beekeeping project made the sample size. , Thesis (MA) -- Faculty of Business and Economic Sciences, School of Economics, Development and Tourism, 2021
- Full Text: false
- Date Issued: 2021-04
Evolutionary robotics controllers with location perception facilitated by neural network-based simulators
- Authors: Phillips, Antin Paul
- Date: 2021-04
- Subjects: Grahamstown (South Africa) , Eastern Cape (South Africa) , Neural networks (Computer science) -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52137 , vital:43444
- Description: Humans impressively maintain a real-time approximation of their bodily form. For instance, one knows where one’s arm is, relative to the body, without needing to directly observe it. This ability, in part, allows humans to interact with the environment without direct observation. This bodily sense is referred to as ”proprioception“. The human body contains various proprioceptors, sensory neurons which provide information about the physical state of the body. This information, along with internal body representations that humans develop over time, allows one to maintain an approximation of their bodily form. Humans also possess an impressive sense of direction and navigation ability. For instance, a blindfolded human can move around a familiar environment and maintain an approximate sense of where they are within that environment. This ability is, in part, enabled by proprioception as it provides one with an approximation of the effects their actions have on their body. The field of Evolutionary Robots (ER) makes extensive use of robotic simulators to carry out simulated robotic evaluations. Research has been conducted into alternate forms of simulation and Simulator Neural Networks (SNNs) were subsequently developed. The speed and accuracy of these SNNs, relative to more typical simulation techniques, is what inspired the approach explored in this research. Robots do not necessarily possess the appropriate hardware to sense their position within an environment. Thus, it was proposed that SNNs could be incorporated into ER controllers to approximate the position of the robot. These SNNs would be executed in parallel to the robot and provide a constant approximation of the robot’s position. This would provide controllers with information that they would not otherwise have, albeit approximate information. Various experiments were carried out which examined both typical ER controllers as well as those which were augmented in the proposed fashion. The augmented controllers were found to outperform typical controllers as well as develop more advanced and efficient behaviours. Furthermore, the augmented controllers demonstrated the ability to solve tasks that regular controllers could not. A potential criticism of the approach suggested in this research is that ER controllers could hypothetically be trained in such a way that the proposed augmentation would be unnecessary. This possibility was investigated and it was found that successfully training controllers in such a manner would be unlikely. Furthermore, the effort involved in fine-tuning this training process would be greater than simply following the approach suggested in this research. Another potential drawback of the suggested approach involved the accuracy of the information that SNNs could provide to controllers. The approximated information was found to diverge over time and negatively affected controller performance. A method to address this issue was proposed and subsequently implemented. This method was demonstrated to be an effective means of reducing the divergence of the SNNs outputs and, in turn, improved controller performance. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Phillips, Antin Paul
- Date: 2021-04
- Subjects: Grahamstown (South Africa) , Eastern Cape (South Africa) , Neural networks (Computer science) -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52137 , vital:43444
- Description: Humans impressively maintain a real-time approximation of their bodily form. For instance, one knows where one’s arm is, relative to the body, without needing to directly observe it. This ability, in part, allows humans to interact with the environment without direct observation. This bodily sense is referred to as ”proprioception“. The human body contains various proprioceptors, sensory neurons which provide information about the physical state of the body. This information, along with internal body representations that humans develop over time, allows one to maintain an approximation of their bodily form. Humans also possess an impressive sense of direction and navigation ability. For instance, a blindfolded human can move around a familiar environment and maintain an approximate sense of where they are within that environment. This ability is, in part, enabled by proprioception as it provides one with an approximation of the effects their actions have on their body. The field of Evolutionary Robots (ER) makes extensive use of robotic simulators to carry out simulated robotic evaluations. Research has been conducted into alternate forms of simulation and Simulator Neural Networks (SNNs) were subsequently developed. The speed and accuracy of these SNNs, relative to more typical simulation techniques, is what inspired the approach explored in this research. Robots do not necessarily possess the appropriate hardware to sense their position within an environment. Thus, it was proposed that SNNs could be incorporated into ER controllers to approximate the position of the robot. These SNNs would be executed in parallel to the robot and provide a constant approximation of the robot’s position. This would provide controllers with information that they would not otherwise have, albeit approximate information. Various experiments were carried out which examined both typical ER controllers as well as those which were augmented in the proposed fashion. The augmented controllers were found to outperform typical controllers as well as develop more advanced and efficient behaviours. Furthermore, the augmented controllers demonstrated the ability to solve tasks that regular controllers could not. A potential criticism of the approach suggested in this research is that ER controllers could hypothetically be trained in such a way that the proposed augmentation would be unnecessary. This possibility was investigated and it was found that successfully training controllers in such a manner would be unlikely. Furthermore, the effort involved in fine-tuning this training process would be greater than simply following the approach suggested in this research. Another potential drawback of the suggested approach involved the accuracy of the information that SNNs could provide to controllers. The approximated information was found to diverge over time and negatively affected controller performance. A method to address this issue was proposed and subsequently implemented. This method was demonstrated to be an effective means of reducing the divergence of the SNNs outputs and, in turn, improved controller performance. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
- Full Text: false
- Date Issued: 2021-04
Presidential accountability for cabinet appointments in South Africa
- Authors: Phorego, Molefhi Solomon
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Executive power--South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/51212 , vital:43228
- Description: The President’s power to appoint cabinet members in South Africa constitutes an essential part of the country’s constitutional framework. It is a discretionary power exercised by the President in his capacity as Head of State bestowed on him by the Constitution, which underpins cabinet appointments.The underlying debates in relation to the President’s power to make cabinet appointments lie between justiciability and non-justiciability. In this respect, there are two schools of thought regarding the question whether the exercise of such a power may be the subject of a judicial inquiry, and if so, to what extent. This thesis provides insight into the nature and origin of the President’s power to appoint cabinet members. It also delves deeply into issues raised by the doctrine of separation of powers surrounding the exercise of this power. The core focus of the thesis is on the extent to which the President can be held accountable for making cabinet appointments. The main argument advanced is that because South Africa is a country founded on the principles of constitutional supremacy and the rule of law, every exercise of public power should be subject to the Constitution, including the President’s power to appoint cabinet members. The determination of whether public power is in line with the dictates of the Constitution calls for an independent judiciary, with the power to rule on any aspect of societal disputes. In pursuit of the above, the thesis analyses the constitutional provisions and case law relevant to the President’s powers as Head of State. The research highlights, amongst others, the President’s duty to give reasons for cabinet appointments. On this point it is submitted that the President does have the constitutional obligation to give reasons for cabinet appointments. Comparisons with other jurisdictions on cabinet appointment processes and oversight mechanisms regarding the exercise of that power form the backdrop against which recommendations are made in the thesis. Proposals are advanced for increased legislative oversight in cabinet appointments. Such oversight should focus on inter alia, the President’s duty to furnish reasons for cabinet appointments. The thesis also proposes a constitutional framework in terms of which Parliament plays a role in the selection of appointees to cabinet. The rationale behind this recommendation is the minimising of instances in which the judiciary is accused of overreaching on the powers of the political organs of government. The courts should, however, still retain the power to pronounce whether both the President and Parliament have fulfilled their relevant constitutional obligations in relation to the process of cabinet appointments. , Thesis (PhD) -- Faculty of Law, Public Law, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Phorego, Molefhi Solomon
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Executive power--South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/51212 , vital:43228
- Description: The President’s power to appoint cabinet members in South Africa constitutes an essential part of the country’s constitutional framework. It is a discretionary power exercised by the President in his capacity as Head of State bestowed on him by the Constitution, which underpins cabinet appointments.The underlying debates in relation to the President’s power to make cabinet appointments lie between justiciability and non-justiciability. In this respect, there are two schools of thought regarding the question whether the exercise of such a power may be the subject of a judicial inquiry, and if so, to what extent. This thesis provides insight into the nature and origin of the President’s power to appoint cabinet members. It also delves deeply into issues raised by the doctrine of separation of powers surrounding the exercise of this power. The core focus of the thesis is on the extent to which the President can be held accountable for making cabinet appointments. The main argument advanced is that because South Africa is a country founded on the principles of constitutional supremacy and the rule of law, every exercise of public power should be subject to the Constitution, including the President’s power to appoint cabinet members. The determination of whether public power is in line with the dictates of the Constitution calls for an independent judiciary, with the power to rule on any aspect of societal disputes. In pursuit of the above, the thesis analyses the constitutional provisions and case law relevant to the President’s powers as Head of State. The research highlights, amongst others, the President’s duty to give reasons for cabinet appointments. On this point it is submitted that the President does have the constitutional obligation to give reasons for cabinet appointments. Comparisons with other jurisdictions on cabinet appointment processes and oversight mechanisms regarding the exercise of that power form the backdrop against which recommendations are made in the thesis. Proposals are advanced for increased legislative oversight in cabinet appointments. Such oversight should focus on inter alia, the President’s duty to furnish reasons for cabinet appointments. The thesis also proposes a constitutional framework in terms of which Parliament plays a role in the selection of appointees to cabinet. The rationale behind this recommendation is the minimising of instances in which the judiciary is accused of overreaching on the powers of the political organs of government. The courts should, however, still retain the power to pronounce whether both the President and Parliament have fulfilled their relevant constitutional obligations in relation to the process of cabinet appointments. , Thesis (PhD) -- Faculty of Law, Public Law, 2021
- Full Text:
- Date Issued: 2021-04
An exploration of the (re)production of femininity in netball spaces: the case of Nelson Mandela Bay, Eastern Cape
- Authors: Phuza, Nobubele
- Date: 2020-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55150 , vital:49163
- Description: Since its introduction in 1920, Netball has reflected and reinforced appropriate ideas of female physicality and a culturally valued femininity. It is socially accepted as an appropriate sport for women evidenced by its promotion for girls in schools, the number of teams, clubs and leagues in existence and the invisibility of men’s netball in the media and society. Existing literature from Australian and New Zealand scholars in the sociology of sport and leisure consistently makes the argument that the meaning of femininity and the expected attributes thereof, are powerfully presented in the bodily performances that occur in netball. “You learn to be a woman, female bonding, female submission and the like. All while seeming to do nothing but throw a ball around.” The aim of this dissertation is to contextualize the conversation around femininity and netball for South Africa, specifically Nelson Mandela Bay. The research focuses on how netball remains an island of femininity in the sea of masculine sport. I draw on individual interviews with twelve (12) competitive netball players and ethnographic field work to examine the meaning of femininity in netball and women’s affinity to it. Using a Bourdieusian-feminist lens, I explain netball spaces as subfields of sport, structured by the configuration of valued capital(s). The findings revealed femininity as a valued capital in netball. It was a compliant femininity, characterised by the need to be aesthetically pleasing, levels of modesty, religiosity and pseudo-fragility. As players accrued netball femininity, they internalized associated dispositions as their own, a habitus. They would transmit and redeposit the habitus through interactions in the field during training sessions and matches. To this end, the dissertation also revealed that the reproduction of femininity in netball was a function of habitus and the reciprocal relationship between bodies and space. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
- Authors: Phuza, Nobubele
- Date: 2020-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55150 , vital:49163
- Description: Since its introduction in 1920, Netball has reflected and reinforced appropriate ideas of female physicality and a culturally valued femininity. It is socially accepted as an appropriate sport for women evidenced by its promotion for girls in schools, the number of teams, clubs and leagues in existence and the invisibility of men’s netball in the media and society. Existing literature from Australian and New Zealand scholars in the sociology of sport and leisure consistently makes the argument that the meaning of femininity and the expected attributes thereof, are powerfully presented in the bodily performances that occur in netball. “You learn to be a woman, female bonding, female submission and the like. All while seeming to do nothing but throw a ball around.” The aim of this dissertation is to contextualize the conversation around femininity and netball for South Africa, specifically Nelson Mandela Bay. The research focuses on how netball remains an island of femininity in the sea of masculine sport. I draw on individual interviews with twelve (12) competitive netball players and ethnographic field work to examine the meaning of femininity in netball and women’s affinity to it. Using a Bourdieusian-feminist lens, I explain netball spaces as subfields of sport, structured by the configuration of valued capital(s). The findings revealed femininity as a valued capital in netball. It was a compliant femininity, characterised by the need to be aesthetically pleasing, levels of modesty, religiosity and pseudo-fragility. As players accrued netball femininity, they internalized associated dispositions as their own, a habitus. They would transmit and redeposit the habitus through interactions in the field during training sessions and matches. To this end, the dissertation also revealed that the reproduction of femininity in netball was a function of habitus and the reciprocal relationship between bodies and space. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
Customer experience: a comparative analysis between the banking and grocery retail sectors
- Authors: Pillay, Deneesha
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53007 , vital:44891
- Description: The notion of customer experience has gained prominence in the field of marketing over the last three decades. It has become a strategic imperative for firms in order to ensure sustained business growth. A positive customer experience not only has the ability to promote customer loyalty but can also assist firms in encouraging brand advocacy. While customer experience has been explored in several contexts, regions and industries, customer experience in South Africa’s banking and grocery retail sectors has not yet been adequately explored. Therefore, this study attempts to provide a comparative analysis of these two sectors and in turn present a model for improving customer experience as a marketing tool. The execution of this study requires a literature review to investigate the field of customer experience. This literature review assisted in developing a conceptual model for customer experience in the attempt of improving customer experience quality. Furthermore, this Treatise pursues a positivistic research approach using quantitative methods of analysis. Factor analysis was conducted using data gathered from an online questionnaire disseminated via e-mail. The sample of this study was selected at random using convenience and snowball sampling. A sample size of n = 858 is used in this study. Descriptive and inferential statistical analysis were conducted on the data. The primary contribution of this study was the presentation and statistical assessment of an exploratory factor analysis of factors influencing customer experience in South Africa’s grocery retail and banking sectors. This study found that the independent factors of Brand Experience, Service Experience and Post-purchase Experience were all found to have a positive effect on the overall customer experience. In the grocery-retail sector, Post-purchase Experience was found to have a strong positive correlation with customer experience. Brand Experience and Service Experience were strongly correlated with each other as independent factors, but did not demonstrate any practical or statistical significance in relation to the dependent factor, Customer Experience. However, in the banking sector, all of these factors demonstrate positive correlations with Customer Experience that are statistically and practically significant. The model presented in this study identifies the determinants of Customer Experience within both sectors. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Pillay, Deneesha
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53007 , vital:44891
- Description: The notion of customer experience has gained prominence in the field of marketing over the last three decades. It has become a strategic imperative for firms in order to ensure sustained business growth. A positive customer experience not only has the ability to promote customer loyalty but can also assist firms in encouraging brand advocacy. While customer experience has been explored in several contexts, regions and industries, customer experience in South Africa’s banking and grocery retail sectors has not yet been adequately explored. Therefore, this study attempts to provide a comparative analysis of these two sectors and in turn present a model for improving customer experience as a marketing tool. The execution of this study requires a literature review to investigate the field of customer experience. This literature review assisted in developing a conceptual model for customer experience in the attempt of improving customer experience quality. Furthermore, this Treatise pursues a positivistic research approach using quantitative methods of analysis. Factor analysis was conducted using data gathered from an online questionnaire disseminated via e-mail. The sample of this study was selected at random using convenience and snowball sampling. A sample size of n = 858 is used in this study. Descriptive and inferential statistical analysis were conducted on the data. The primary contribution of this study was the presentation and statistical assessment of an exploratory factor analysis of factors influencing customer experience in South Africa’s grocery retail and banking sectors. This study found that the independent factors of Brand Experience, Service Experience and Post-purchase Experience were all found to have a positive effect on the overall customer experience. In the grocery-retail sector, Post-purchase Experience was found to have a strong positive correlation with customer experience. Brand Experience and Service Experience were strongly correlated with each other as independent factors, but did not demonstrate any practical or statistical significance in relation to the dependent factor, Customer Experience. However, in the banking sector, all of these factors demonstrate positive correlations with Customer Experience that are statistically and practically significant. The model presented in this study identifies the determinants of Customer Experience within both sectors. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
Benthic habitat mapping using marine geophysics and machine learning on the continental shelf of South Africa
- Authors: Pillay, Talicia
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Marine geophysics
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52061 , vital:43452
- Description: A method to map seafloor substrates using machine learning, based primarily on hydroacoustic data including multibeam bathymetry, backscatter, and side-scan sonar, has been developed. The aim was to produce a customdesigned benthic habitat classification method that digitally integrates marine geophysics and biological science data, with relevance to all elements of the local substrate, and this was the first time it was attempted in a South African context. The algorithm developed is able to produce bio-physical benthic habitat maps and this can be extended along the continental shelf of South Africa as new data setsare collected and the algorithm is supplemented. At the outset, this work has focused on broad categories of rock and detailed categories of sediment. Four study sites with varying substrate were selected to holistically build the algorithm that followed a tiered approach of machine learning: Table Bay, Clifton, Koeberg Harbour and Cape St Francis. Table Bay was used to develop a new method of physical seafloor classification, by comparing and contrasting a number of statistical algorithms and software programs. Clifton was used to test the developed clustering algorithm, and Koeberg which is 35 km to the north was used to validate the algorithm because sediment samples, along with drop camera footage, were integrated to better define the results. The resultant verified algorithm was tested at Cape St Francis, where Remotely Operated Vehicle (ROV) footage was acquired in addition to hydroacoustic data. In the first phase of the process towards developing an algorithm, a customised tool was created within ArcGIS using python scripting language to classify seafloor bathymetry, which can be applied to any area of seafloor whatsoever. The tool was based on pioneering work done by the National Oceanic and Atmospheric Administration (NOAA) on a benthic terrain modelling toolbox and adapted to include side-scan sonar data. In the second phase of work, multibeam bathymetry, backscatter and side-scan sonar data that were processed using Qimera, Fledermaus Geocoder Toolbox, and Navlog processing software, were classified using different machine learning techniques including Decision Trees, Random Forests, and k-means clustering computer algorithms. The results from these algorithms were compared to manually-digitised polygons which were created to classify the seafloor substrate distribution by identification of different textures. Integrating all results facilitated a quantitative comparison that illuminated advantages and disadvantages of each machine learning technique and ultimately the k-means clustering techniques were found to be the simplest to implement and understand and worked most efficiently based on their seafloor segmentation capabilities in Table Bay, against all three hydroacoustic data sets (multibeam bathymetry, backscatter and side-scan sonar). In the third phase of work, ground-truthed seafloor characterisation maps were produced for the two study areas of Clifton and Koeberg Harbour. This applied multibeam bathymetry and backscatter data that were collected and processed with machine learning clustering techniques. , Thesis (MSc) -- Faculty of Science, Ocean Sciences, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Pillay, Talicia
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Marine geophysics
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52061 , vital:43452
- Description: A method to map seafloor substrates using machine learning, based primarily on hydroacoustic data including multibeam bathymetry, backscatter, and side-scan sonar, has been developed. The aim was to produce a customdesigned benthic habitat classification method that digitally integrates marine geophysics and biological science data, with relevance to all elements of the local substrate, and this was the first time it was attempted in a South African context. The algorithm developed is able to produce bio-physical benthic habitat maps and this can be extended along the continental shelf of South Africa as new data setsare collected and the algorithm is supplemented. At the outset, this work has focused on broad categories of rock and detailed categories of sediment. Four study sites with varying substrate were selected to holistically build the algorithm that followed a tiered approach of machine learning: Table Bay, Clifton, Koeberg Harbour and Cape St Francis. Table Bay was used to develop a new method of physical seafloor classification, by comparing and contrasting a number of statistical algorithms and software programs. Clifton was used to test the developed clustering algorithm, and Koeberg which is 35 km to the north was used to validate the algorithm because sediment samples, along with drop camera footage, were integrated to better define the results. The resultant verified algorithm was tested at Cape St Francis, where Remotely Operated Vehicle (ROV) footage was acquired in addition to hydroacoustic data. In the first phase of the process towards developing an algorithm, a customised tool was created within ArcGIS using python scripting language to classify seafloor bathymetry, which can be applied to any area of seafloor whatsoever. The tool was based on pioneering work done by the National Oceanic and Atmospheric Administration (NOAA) on a benthic terrain modelling toolbox and adapted to include side-scan sonar data. In the second phase of work, multibeam bathymetry, backscatter and side-scan sonar data that were processed using Qimera, Fledermaus Geocoder Toolbox, and Navlog processing software, were classified using different machine learning techniques including Decision Trees, Random Forests, and k-means clustering computer algorithms. The results from these algorithms were compared to manually-digitised polygons which were created to classify the seafloor substrate distribution by identification of different textures. Integrating all results facilitated a quantitative comparison that illuminated advantages and disadvantages of each machine learning technique and ultimately the k-means clustering techniques were found to be the simplest to implement and understand and worked most efficiently based on their seafloor segmentation capabilities in Table Bay, against all three hydroacoustic data sets (multibeam bathymetry, backscatter and side-scan sonar). In the third phase of work, ground-truthed seafloor characterisation maps were produced for the two study areas of Clifton and Koeberg Harbour. This applied multibeam bathymetry and backscatter data that were collected and processed with machine learning clustering techniques. , Thesis (MSc) -- Faculty of Science, Ocean Sciences, 2021
- Full Text: false
- Date Issued: 2021-04
Evaluating the influence of electoral violence on democratic consolidaton in Sub-Saharan Africa: the case of the democratic republic of congo from 2006-2018
- Authors: Poggi, Giovanni
- Date: 2020-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55073 , vital:49035
- Description: The democratic legitimacy of African executives has been called into question substantially over the last decade. Using the Democratic Republic of Congo (DRC) as a case study, this evaluative research seeks to analyse how African executives and political elites continue to play a crucial role in inducing civil unrest and electoral violence. For African democracy to develop, there must be enforced resolutions to eradicate issues facing both procedural and substantive democracy on the continent. This research examined electoral violence and unconstitutional acts that aggravate electoral system abuse and diminish the consolidation of democracy in sub-Saharan African states, in particular the DRC. A specific focus on the leadership of Joseph Kabila in the DRC forms the case study component of this research. In 2016, elections were postponed in the DRC and the DRC’s constitutional court interpreted Article 70 and Article 73 of the constitution in a manner that allowed President Kabila to remain in office until a newly elected president was installed. The court’s ruling and interpretation of Article 70 and Article 73 was an attempt to avoid a power vacuum. The study evaluated the components that trigger the escalation of electoral violence in Sub-Saharan African states. The study reports on different contributory factors, including but not limited to, the impact of predatory and rent-seeking leadership towards electoral manipulation; and the effect of patron-client relations on democratic institutions. Even though elections are not the only indicator of democracy stability in a state, this study demonstrated how electoral violence threatens the consolidation of democracy in sub-Saharan African states, in particular the DRC. In examining electoral violence, a desktop analysis method, which was used in the study, involved the collection of data from existing resources in order to provide a more critical lens to understanding electoral violence in the DRC. The theoretical analysis used in the study is the Höglund (2009) framework on electoral institutions which outlined how political violence remains a pervasive feature in Sub-Saharan countries by linking the framework to patron-clientelism. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-12
- Authors: Poggi, Giovanni
- Date: 2020-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55073 , vital:49035
- Description: The democratic legitimacy of African executives has been called into question substantially over the last decade. Using the Democratic Republic of Congo (DRC) as a case study, this evaluative research seeks to analyse how African executives and political elites continue to play a crucial role in inducing civil unrest and electoral violence. For African democracy to develop, there must be enforced resolutions to eradicate issues facing both procedural and substantive democracy on the continent. This research examined electoral violence and unconstitutional acts that aggravate electoral system abuse and diminish the consolidation of democracy in sub-Saharan African states, in particular the DRC. A specific focus on the leadership of Joseph Kabila in the DRC forms the case study component of this research. In 2016, elections were postponed in the DRC and the DRC’s constitutional court interpreted Article 70 and Article 73 of the constitution in a manner that allowed President Kabila to remain in office until a newly elected president was installed. The court’s ruling and interpretation of Article 70 and Article 73 was an attempt to avoid a power vacuum. The study evaluated the components that trigger the escalation of electoral violence in Sub-Saharan African states. The study reports on different contributory factors, including but not limited to, the impact of predatory and rent-seeking leadership towards electoral manipulation; and the effect of patron-client relations on democratic institutions. Even though elections are not the only indicator of democracy stability in a state, this study demonstrated how electoral violence threatens the consolidation of democracy in sub-Saharan African states, in particular the DRC. In examining electoral violence, a desktop analysis method, which was used in the study, involved the collection of data from existing resources in order to provide a more critical lens to understanding electoral violence in the DRC. The theoretical analysis used in the study is the Höglund (2009) framework on electoral institutions which outlined how political violence remains a pervasive feature in Sub-Saharan countries by linking the framework to patron-clientelism. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-12
Happiness in manufacturing
- Authors: Prinsloo, Christopher John
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52992 , vital:44893
- Description: The study of happiness, originally with a basis in psychology and sociology, became more scientific when methods were found to measure the complex concept. Humanity believe that happiness is meaningful, important, and worth achieving because, it is one of the most significant dimensions of human experience and emotions. The rewards of being happy for individuals and society are many including health, positivity, and productivity. The debate rages on whether subjective wellbeing increases as gross domestic product increases in countries and cities. Research has affirmed that happy employees are more productive, thereby improving financial sustainable, financial results for organisations and society. The opposite perspective is that unhappy employees negatively affect the performance, moral of fellow employees leading to negative results for organisations and poor social conditions. The Steel Wire and Rope manufacturing plant serves many organisations worldwide, where large industries exist including mining, offshore, agriculture and general-purpose applications. The manufacturing industry in which the study is based is strategic to South African local manufacture with critical applications in mine winding, by hoisting materials and men to the surface from the deepest mines in the world. Achievements include the longest and heaviest rope in the world. Happiness in this industry has not yet been explored, making this study new in this particular industry. The Steel Wire and Rope factory are a manufacturing facility and manufacturing companies can benefit from improving employee happiness levels. This makes this study of a steel wire and rope manufacturing facility important, as it would provide insight into similar manufacturing industries. The purpose of the study is to understand the happiness levels of employees in the steel, wire and rope manufacturing facility. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Prinsloo, Christopher John
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52992 , vital:44893
- Description: The study of happiness, originally with a basis in psychology and sociology, became more scientific when methods were found to measure the complex concept. Humanity believe that happiness is meaningful, important, and worth achieving because, it is one of the most significant dimensions of human experience and emotions. The rewards of being happy for individuals and society are many including health, positivity, and productivity. The debate rages on whether subjective wellbeing increases as gross domestic product increases in countries and cities. Research has affirmed that happy employees are more productive, thereby improving financial sustainable, financial results for organisations and society. The opposite perspective is that unhappy employees negatively affect the performance, moral of fellow employees leading to negative results for organisations and poor social conditions. The Steel Wire and Rope manufacturing plant serves many organisations worldwide, where large industries exist including mining, offshore, agriculture and general-purpose applications. The manufacturing industry in which the study is based is strategic to South African local manufacture with critical applications in mine winding, by hoisting materials and men to the surface from the deepest mines in the world. Achievements include the longest and heaviest rope in the world. Happiness in this industry has not yet been explored, making this study new in this particular industry. The Steel Wire and Rope factory are a manufacturing facility and manufacturing companies can benefit from improving employee happiness levels. This makes this study of a steel wire and rope manufacturing facility important, as it would provide insight into similar manufacturing industries. The purpose of the study is to understand the happiness levels of employees in the steel, wire and rope manufacturing facility. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
A study on staff provisioning using the Peter Morkel Model with reference to a selected school in the Amathole East District
- Authors: Qaba, Loyiso Siyabulela
- Date: 2020-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55161 , vital:49171
- Description: The Post-Provisioning Model (PPM) is a Resource Allocation Model (RAM) used by the Department of Education to optimize the distribution of available educator resources to public schools. The Department of Education adopted the PPM to distribute the total available posts to all public schools in an “equitable, transparent and resource-efficient manner. The PPM is a formula-driven model that primarily allocates educators, as human capital, to public schools based on learner enrolment numbers. In addition to allocating teaching staff, the PPM allocates the School Management Team (SMT) to each school. The outcome of the PPM formula is called the Post-Provisioning Norm (PPN). The implementation of the PPM has presented various challenges in the management of public schools. The primary aims of this study were to investigate any possible weaknesses of the PPM and to critically evaluate and explore school managers’ views of the PPM in the management of public schools. For the purposes of this study a probability sampling procedure was used. The participants were chosen from the principals within the Department of Education in Amathole East District. The literature review undertaken and the field research findings in the fourth chapter revealed that there is a gap between the ideals of the PPM and its implementation. It was found that there was a poor understanding of the technical aspects of the PPM formula among senior managers of public schools. There is evidence of equitable quantitative distribution of posts through the PPM. However, it was discovered that the PPM does not take into account the distribution of qualified educators. Hence, some of the allocated posts in public schools were often filled by under-qualified or non-qualified staff. The appointment of qualified educators was skewed. Further findings of this study revealed, amongst others, the inability of the PPM to provide for and promote the needs of a diverse curriculum in rural areas, and the inability to factor in and balance the variable that some public schools raise more money in school fees, which enables the advantaged schools to employ additional educators. The primary recommendations of this study are that principals be trained, on an annual basis, on the workings of the PPM and that the South African Schools Act No.84 of 1996 should be amended to grant authority to the Head of Department of the province to appoint and deploy qualified educators to public schools. , Thesis (MPA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
- Authors: Qaba, Loyiso Siyabulela
- Date: 2020-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/55161 , vital:49171
- Description: The Post-Provisioning Model (PPM) is a Resource Allocation Model (RAM) used by the Department of Education to optimize the distribution of available educator resources to public schools. The Department of Education adopted the PPM to distribute the total available posts to all public schools in an “equitable, transparent and resource-efficient manner. The PPM is a formula-driven model that primarily allocates educators, as human capital, to public schools based on learner enrolment numbers. In addition to allocating teaching staff, the PPM allocates the School Management Team (SMT) to each school. The outcome of the PPM formula is called the Post-Provisioning Norm (PPN). The implementation of the PPM has presented various challenges in the management of public schools. The primary aims of this study were to investigate any possible weaknesses of the PPM and to critically evaluate and explore school managers’ views of the PPM in the management of public schools. For the purposes of this study a probability sampling procedure was used. The participants were chosen from the principals within the Department of Education in Amathole East District. The literature review undertaken and the field research findings in the fourth chapter revealed that there is a gap between the ideals of the PPM and its implementation. It was found that there was a poor understanding of the technical aspects of the PPM formula among senior managers of public schools. There is evidence of equitable quantitative distribution of posts through the PPM. However, it was discovered that the PPM does not take into account the distribution of qualified educators. Hence, some of the allocated posts in public schools were often filled by under-qualified or non-qualified staff. The appointment of qualified educators was skewed. Further findings of this study revealed, amongst others, the inability of the PPM to provide for and promote the needs of a diverse curriculum in rural areas, and the inability to factor in and balance the variable that some public schools raise more money in school fees, which enables the advantaged schools to employ additional educators. The primary recommendations of this study are that principals be trained, on an annual basis, on the workings of the PPM and that the South African Schools Act No.84 of 1996 should be amended to grant authority to the Head of Department of the province to appoint and deploy qualified educators to public schools. , Thesis (MPA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2020
- Full Text:
- Date Issued: 2020-04
Strategies to sustain SMEs post the hard lockdown period: a multiple case study in Gauteng
- Rabohale, Mokabolane Innocent
- Authors: Rabohale, Mokabolane Innocent
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53015 , vital:44889
- Description: The outbreak of the Covid 19 pandemic and the lockdown restrictions imposed by the government in March 2020 exacerbated uncertain conditions of the weak South African business environment. This meant that SME owners and managers in different sectors had to implement strategies to manoeuvre the further weakened and unprecedented business environment. To investigate this, the research question asked was: what sustainable strategies will SME owners and managers craft and implement to use post the lockdown period? The study analysed strategies before, during, and post the hard lockdown period to provide insight into how SMEs adopted to the uncertain business environment. This study interviewed twenty (20) SMEs in different sectors in Gauteng to explore strategies that SME owners and managers used to sustain their businesses prior to, during, and post the level 5 and level 4 lockdown. The study revealed strategies employed by SME owners across five sectors. Furthermore, the study indicated that during the hard lockdown, owners used a “wait and see” strategy in different degrees. Post the level 5 and 4 lockdown, different sectors were innovating, cost cutting, and digitisation according to their level of comfortability and diversification. The study reveals that strategic planning was missing prior, during, and post the level 4 and 5 lockdowns, despite SME owners’ educational background. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Rabohale, Mokabolane Innocent
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/53015 , vital:44889
- Description: The outbreak of the Covid 19 pandemic and the lockdown restrictions imposed by the government in March 2020 exacerbated uncertain conditions of the weak South African business environment. This meant that SME owners and managers in different sectors had to implement strategies to manoeuvre the further weakened and unprecedented business environment. To investigate this, the research question asked was: what sustainable strategies will SME owners and managers craft and implement to use post the lockdown period? The study analysed strategies before, during, and post the hard lockdown period to provide insight into how SMEs adopted to the uncertain business environment. This study interviewed twenty (20) SMEs in different sectors in Gauteng to explore strategies that SME owners and managers used to sustain their businesses prior to, during, and post the level 5 and level 4 lockdown. The study revealed strategies employed by SME owners across five sectors. Furthermore, the study indicated that during the hard lockdown, owners used a “wait and see” strategy in different degrees. Post the level 5 and 4 lockdown, different sectors were innovating, cost cutting, and digitisation according to their level of comfortability and diversification. The study reveals that strategic planning was missing prior, during, and post the level 4 and 5 lockdowns, despite SME owners’ educational background. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
Studies on seed germination and response to fertilization of Amaranthus accessions collected in the Eastern Cape Province, South Africa
- Ramangoele, Mpaballeng Alinah
- Authors: Ramangoele, Mpaballeng Alinah
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54112 , vital:46307
- Description: Studies were conducted at Döhne Agricultural Development Institute (D.A.D.I.), geographically located between latitude 32°31'34.077"S and longitude 27°27'37.473"E in Stutterheim, Eastern Cape Province from summer 2018 until autumn 2019.The objectives were to determine seed germination and seedling vigour of four local Amaranthus accessions and to evaluate the effect of organic and inorganic fertilization on the growth, yield and nutrient composition. In the germination studies, herein referred to as Experiment 1,laboratory assessments were laid out in a Complete Randomized Design (CRD) replicated four times to test seed germination, seedling emergence and seedling vigour of four Amaranthus accessions namely: A. Hypochondriacus, A. Retroflexus 1, A. Hybridus and A. Retroflexus 2. Data collection included germination percentage, radicle length, co-efficient of velocity of germination and seedling vigour. A.Retroflexus2 gave the highest germination percentage in summer (85%) and autumn (87.75%).Seed weight resulted in the highest germination percentage and was observed to have shown a high positive correlation of {R2=0.91} in summer and{R2=0.92} in autumn respectively. The highest seedling vigour (p<0.001) in summer was attained from A. Hypochondriacus and A. Retroflexus2.In the greenhouse in summer, the highest emergence percentage was observed from A. Hypochondriacus(93.00%), whilst in autumn it was A.Retroflexus2 (88.38%).A. Retroflexus1 was the least performer in both seasons. In summer, A. Hypochondriacus and A. Retroflexus2 resulted in very high seedling vigour. In autumn A. Hypochondriacus, A. Retroflexus2 and A. Hybridus resulted in high seedling vigour and A. Retroflexus1 in moderate seedling vigour. The relationship observed between seed weight and seedling vigour showed a negative (inverse)correlation in summer {R2=0.58} and autumn {R2=0.62}.In Experiment 2, seedlings of A. Hypochondriacus and A. Retroflexus 2were transplanted in 5litrebasal perforated plastic pots which were filled with soil. The experimental layout was a CRD replicated four times. The treatments were: control (no amendment), goat manure, cattle manure and NPK fertilizer. Growth performance data were collected for plant height, the number of leaves and stem girth. In summer, when goat manure was applied both accessions resulted in the tallest plants (78.80cm) yet A. Retroflexus 2 and vA. Hypochondriacus gave the greatest stem girthand highest number of leaves respectively. In autumn, the tallest plants and highest number of leaves were observed from A. Retroflexus 2fertilized with NPK and the greatest stem girth was observed from A. Hypochondriacus fertilized with goat manure. The interaction of fertilization and accessions resulted in A. Retroflexus 2 fertilized with goat manure generating the greatest fresh shoot biomass (137.27g plant-1) and the least from the control. Both accessions fertilized with goat manure attained the greatest dry leaf biomass. Insummer, A.Retroflexus2 outperformed A. Hypochondriacus in calcium content despite the treatments. Unfertilized A. Retroflexus2 produced leaves with high potassium. Both unfertilized accessions showed the highest magnesium content. All A. Retroflexus2 treatments outperformed A. Hypochondriacus treatments on iron content except the control. The summer season was the best in terms of growth and yield of the tested accessions. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Ramangoele, Mpaballeng Alinah
- Date: 2021-12
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54112 , vital:46307
- Description: Studies were conducted at Döhne Agricultural Development Institute (D.A.D.I.), geographically located between latitude 32°31'34.077"S and longitude 27°27'37.473"E in Stutterheim, Eastern Cape Province from summer 2018 until autumn 2019.The objectives were to determine seed germination and seedling vigour of four local Amaranthus accessions and to evaluate the effect of organic and inorganic fertilization on the growth, yield and nutrient composition. In the germination studies, herein referred to as Experiment 1,laboratory assessments were laid out in a Complete Randomized Design (CRD) replicated four times to test seed germination, seedling emergence and seedling vigour of four Amaranthus accessions namely: A. Hypochondriacus, A. Retroflexus 1, A. Hybridus and A. Retroflexus 2. Data collection included germination percentage, radicle length, co-efficient of velocity of germination and seedling vigour. A.Retroflexus2 gave the highest germination percentage in summer (85%) and autumn (87.75%).Seed weight resulted in the highest germination percentage and was observed to have shown a high positive correlation of {R2=0.91} in summer and{R2=0.92} in autumn respectively. The highest seedling vigour (p<0.001) in summer was attained from A. Hypochondriacus and A. Retroflexus2.In the greenhouse in summer, the highest emergence percentage was observed from A. Hypochondriacus(93.00%), whilst in autumn it was A.Retroflexus2 (88.38%).A. Retroflexus1 was the least performer in both seasons. In summer, A. Hypochondriacus and A. Retroflexus2 resulted in very high seedling vigour. In autumn A. Hypochondriacus, A. Retroflexus2 and A. Hybridus resulted in high seedling vigour and A. Retroflexus1 in moderate seedling vigour. The relationship observed between seed weight and seedling vigour showed a negative (inverse)correlation in summer {R2=0.58} and autumn {R2=0.62}.In Experiment 2, seedlings of A. Hypochondriacus and A. Retroflexus 2were transplanted in 5litrebasal perforated plastic pots which were filled with soil. The experimental layout was a CRD replicated four times. The treatments were: control (no amendment), goat manure, cattle manure and NPK fertilizer. Growth performance data were collected for plant height, the number of leaves and stem girth. In summer, when goat manure was applied both accessions resulted in the tallest plants (78.80cm) yet A. Retroflexus 2 and vA. Hypochondriacus gave the greatest stem girthand highest number of leaves respectively. In autumn, the tallest plants and highest number of leaves were observed from A. Retroflexus 2fertilized with NPK and the greatest stem girth was observed from A. Hypochondriacus fertilized with goat manure. The interaction of fertilization and accessions resulted in A. Retroflexus 2 fertilized with goat manure generating the greatest fresh shoot biomass (137.27g plant-1) and the least from the control. Both accessions fertilized with goat manure attained the greatest dry leaf biomass. Insummer, A.Retroflexus2 outperformed A. Hypochondriacus in calcium content despite the treatments. Unfertilized A. Retroflexus2 produced leaves with high potassium. Both unfertilized accessions showed the highest magnesium content. All A. Retroflexus2 treatments outperformed A. Hypochondriacus treatments on iron content except the control. The summer season was the best in terms of growth and yield of the tested accessions. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text:
- Date Issued: 2021-12
Assessing community engagement programmes to mitigate uncontrolled, deliberately ignited fires in forestry plantation-communal land interface, Kwazulu-Natal, South Africa
- Authors: Ramantswana, Nontethelelo
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Forest fires -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52008 , vital:43439
- Description: Forestry plantations in South Africa are surrounded by poor local communities that normally depend on the forestry resources for subsistence. This interface area is faced with human induced uncontrolled fires. There is a lack of understanding regarding the reasons for deliberate ignition of uncontrolled fires. There is also lack of information on the success of community engagement programs (CEPs) as fire protection intervention and / or their implementation barriers. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Ramantswana, Nontethelelo
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Forest fires -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52008 , vital:43439
- Description: Forestry plantations in South Africa are surrounded by poor local communities that normally depend on the forestry resources for subsistence. This interface area is faced with human induced uncontrolled fires. There is a lack of understanding regarding the reasons for deliberate ignition of uncontrolled fires. There is also lack of information on the success of community engagement programs (CEPs) as fire protection intervention and / or their implementation barriers. , Thesis (MSc) -- Faculty of Science, School of Natural Resource Management, 2021
- Full Text: false
- Date Issued: 2021-04
The relationship between the performance management development system and compensation: the case of the City of Cape Town Municipality
- Authors: Ramaru, Murendeni Praise
- Date: 2021-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54836 , vital:47926
- Description: This research was directed towards the current state of the relationship between the Performance Management Development System and compensation in the City of Cape Town Municipality. The research approach adopted in this study was a qualitative method. Desktop analysis and case study design were used as secondary data collection tools. Since the democratization of South Africa in 1994, the focus has been directed towards the maximising of economic growth and development. The road to development has been challenging since the inception of democracy. Organisations are operating in a dynamic and highly competitive environment which requires adjustments and development of strategies to remain relevant. Compensation is one of the ways different organisations have adopted as a strategy for attracting and retaining suitable employees as well as maintaining performance management. The essence of a well-functioning performance management development system has played a critical role in providing an effective system in the public service. The main objective of compensation is to ensure an organisation has the right resources necessary to motivate employees’ performance needed to achieve the organisational strategy. The study found that a compensation strategy leads to increased employees’ performance. The findings indicated that there is a positive connection between the compensation strategy and the performance of the employees. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-04
- Authors: Ramaru, Murendeni Praise
- Date: 2021-04
- Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/54836 , vital:47926
- Description: This research was directed towards the current state of the relationship between the Performance Management Development System and compensation in the City of Cape Town Municipality. The research approach adopted in this study was a qualitative method. Desktop analysis and case study design were used as secondary data collection tools. Since the democratization of South Africa in 1994, the focus has been directed towards the maximising of economic growth and development. The road to development has been challenging since the inception of democracy. Organisations are operating in a dynamic and highly competitive environment which requires adjustments and development of strategies to remain relevant. Compensation is one of the ways different organisations have adopted as a strategy for attracting and retaining suitable employees as well as maintaining performance management. The essence of a well-functioning performance management development system has played a critical role in providing an effective system in the public service. The main objective of compensation is to ensure an organisation has the right resources necessary to motivate employees’ performance needed to achieve the organisational strategy. The study found that a compensation strategy leads to increased employees’ performance. The findings indicated that there is a positive connection between the compensation strategy and the performance of the employees. , Thesis (MA) -- Faculty of Humanities, School of Governmental and Social Sciences, 2021
- Full Text:
- Date Issued: 2021-04
Enablers and dis-enablers to the success of the East London industrial development zone
- Authors: Ramncwana, Ayanda
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52967 , vital:44890
- Description: Special Economic Zones (SEZs) have been a global phenomenon since the 1960s and have been integral to the transformation of emerging and ailing economies. In 2002 the South African government identified SEZs as instruments for advancing its economy into a higher industrialisation path based the assessment of potential socio-economic gains. Past research findings, however, suggest that South African SEZs, when compared to international SEZ performances, are lagging behind both in terms of delivering a compelling SEZ value proposition and achieving the desired socio-economic gains. Limited research has been conducted on the factors which enable and dis-enable the success of SEZs in South Africa. This study evaluates the factors that enable and dis-enable the effectiveness of South African SEZs in achieving their socio-economic development objectives. Applying a qualitative case study methodology, research was conducted on the East London Industrial Development Zone(ELIDZ), one of the first SEZs to be designated in South Africa in 2002. The study finds that a weak SEZ regulatory framework characterised by slow delivery of important SEZ industrial support has dis-enabled South African SEZs. A complex business environment has also dis-enabled the competitiveness of South African SEZs. The study reveals that while it is easier to conduct business inside the SEZs, South African SEZs are not given adequate policy latitude to be an experimental ground to drive reform that will improve the ease of doing business in South Africa. A challenging labour market marred by low productivity, high production costs and inadequately skilled labour continue to challenge the success of SEZs in South Africa. Poor regional infrastructure and delays in the roll out of fiscal incentives, are also some of the factors that have dis-enabled the success of the East London IDZ. World-class infrastructure inside the ELIDZ, inherent locational competitive advantages and the existence of locational-specific non-fiscal incentives have, however, been the key enablers that have improved the competitiveness of the ELIDZ. Despite some of the notable dis-enablers to the competitiveness of South African SEZs, the ELIDZ has done well in achieving short-term static outcomes such as employment, exports, investment attraction and FDI despite some of the factors that had dis-enabled the zone. The zone has also achieved certain dynamic outcomes such as skills upgrading, industrial upgrading, technology transfer and diversification of the economic output, albeit these still being at low levels. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04
- Authors: Ramncwana, Ayanda
- Date: 2021-04
- Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/52967 , vital:44890
- Description: Special Economic Zones (SEZs) have been a global phenomenon since the 1960s and have been integral to the transformation of emerging and ailing economies. In 2002 the South African government identified SEZs as instruments for advancing its economy into a higher industrialisation path based the assessment of potential socio-economic gains. Past research findings, however, suggest that South African SEZs, when compared to international SEZ performances, are lagging behind both in terms of delivering a compelling SEZ value proposition and achieving the desired socio-economic gains. Limited research has been conducted on the factors which enable and dis-enable the success of SEZs in South Africa. This study evaluates the factors that enable and dis-enable the effectiveness of South African SEZs in achieving their socio-economic development objectives. Applying a qualitative case study methodology, research was conducted on the East London Industrial Development Zone(ELIDZ), one of the first SEZs to be designated in South Africa in 2002. The study finds that a weak SEZ regulatory framework characterised by slow delivery of important SEZ industrial support has dis-enabled South African SEZs. A complex business environment has also dis-enabled the competitiveness of South African SEZs. The study reveals that while it is easier to conduct business inside the SEZs, South African SEZs are not given adequate policy latitude to be an experimental ground to drive reform that will improve the ease of doing business in South Africa. A challenging labour market marred by low productivity, high production costs and inadequately skilled labour continue to challenge the success of SEZs in South Africa. Poor regional infrastructure and delays in the roll out of fiscal incentives, are also some of the factors that have dis-enabled the success of the East London IDZ. World-class infrastructure inside the ELIDZ, inherent locational competitive advantages and the existence of locational-specific non-fiscal incentives have, however, been the key enablers that have improved the competitiveness of the ELIDZ. Despite some of the notable dis-enablers to the competitiveness of South African SEZs, the ELIDZ has done well in achieving short-term static outcomes such as employment, exports, investment attraction and FDI despite some of the factors that had dis-enabled the zone. The zone has also achieved certain dynamic outcomes such as skills upgrading, industrial upgrading, technology transfer and diversification of the economic output, albeit these still being at low levels. , Thesis (MBA) -- Faculty of Business and Economic Sciences, NMU Business School, 2021
- Full Text: false
- Date Issued: 2021-04