Genetic detection of some tick-borne bacterial and protozoan pathogens in ticks collected in Raymond Mhlaba local municipality, Eastern Cape Province, South Africa
- Authors: Nqoro, Ayabulela
- Date: 2019
- Subjects: Tick-borne diseases Ticks
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/17084 , vital:40846
- Description: Ticks and tick-borne diseases are becoming a major life threatening concern to wildlife, domesticated animals and human health. Besides causing skin damage, ticks infestations have become a growing burden in food security, economic losses and transmitting multides of pathogens. Little data and knowledge is available regarding the occurrence of etiologic agents of tick-borne diseases in the Eastern Cape of South Africa, hence the study was conducted and aimed at screening for genetic material of Anaplasma, Rickettisia, Ehrlichia, Borrelia, Babesia and Theileria species in ticks collected in Raymond Mhlaba District at Eastern Cape, South Africa. Ticks were collected from domesticated animals in Raymond Mhlaba Municipality, and were morphologically identified and processed for DNA extraction. Ticks were chopped into bits and DNA was extracted from the samples with commercial DNA extraction kit. The extracted DNA samples was used to molecularly identify the tick as well as assess the presence of tickborne pathogens belonging to Rickettsia, Babesia, Borrelia, Anaplasma and Erhlichia, and Theileria spp. by PCR using specific primer pairs published in literature. Positive amplicons were sequenced in a commercial sequencing facility. The obtained chromatograms were edited with Geneious bioinformatics software and were subjected to BLASTn and phylogenetic analyses using MEGA7 version for evolutionary relationships with curated reference sequences in GenBank. Nine hundred and sixty two tick samples were collected from domestic animals. Collected tick samples belonged to three genera, which were the Amblyomma, Rhipicephalus and Haemophalis in decreasing order of their abundance. Screening of tick DNA samples by PCR did not show presence of Babesia, Borrelia, Anaplasma and Erhlichia. 13 Positive PCR products were observed for Rickettsia and Theileria spp.. The positive amplicons were purified, sequenced and analysed for speciation of Theileria and Rickettsia. The presence of Rickettsia was detected in 60/994 (6%) from the three genera of ticks. Phylogenetic analyses shows that the sequences obtained are phylogenetically related to members of Spotted fever group Rickettsiae. Genetic material of Theileria spp. was detected from 10/994 ticks with an overall infection of 1% obtained in Rhipicephalus genera. Analyses shows that the sequences obtained are phylogenetically related to T. orientalis complex. The finding from this study therefore expands the knowledge on recent emergence of Theileria and Rickettsia spp. in Raymond Mhlaba Municipality in Eastern Cape, South Africa
- Full Text:
- Date Issued: 2019
- Authors: Nqoro, Ayabulela
- Date: 2019
- Subjects: Tick-borne diseases Ticks
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/17084 , vital:40846
- Description: Ticks and tick-borne diseases are becoming a major life threatening concern to wildlife, domesticated animals and human health. Besides causing skin damage, ticks infestations have become a growing burden in food security, economic losses and transmitting multides of pathogens. Little data and knowledge is available regarding the occurrence of etiologic agents of tick-borne diseases in the Eastern Cape of South Africa, hence the study was conducted and aimed at screening for genetic material of Anaplasma, Rickettisia, Ehrlichia, Borrelia, Babesia and Theileria species in ticks collected in Raymond Mhlaba District at Eastern Cape, South Africa. Ticks were collected from domesticated animals in Raymond Mhlaba Municipality, and were morphologically identified and processed for DNA extraction. Ticks were chopped into bits and DNA was extracted from the samples with commercial DNA extraction kit. The extracted DNA samples was used to molecularly identify the tick as well as assess the presence of tickborne pathogens belonging to Rickettsia, Babesia, Borrelia, Anaplasma and Erhlichia, and Theileria spp. by PCR using specific primer pairs published in literature. Positive amplicons were sequenced in a commercial sequencing facility. The obtained chromatograms were edited with Geneious bioinformatics software and were subjected to BLASTn and phylogenetic analyses using MEGA7 version for evolutionary relationships with curated reference sequences in GenBank. Nine hundred and sixty two tick samples were collected from domestic animals. Collected tick samples belonged to three genera, which were the Amblyomma, Rhipicephalus and Haemophalis in decreasing order of their abundance. Screening of tick DNA samples by PCR did not show presence of Babesia, Borrelia, Anaplasma and Erhlichia. 13 Positive PCR products were observed for Rickettsia and Theileria spp.. The positive amplicons were purified, sequenced and analysed for speciation of Theileria and Rickettsia. The presence of Rickettsia was detected in 60/994 (6%) from the three genera of ticks. Phylogenetic analyses shows that the sequences obtained are phylogenetically related to members of Spotted fever group Rickettsiae. Genetic material of Theileria spp. was detected from 10/994 ticks with an overall infection of 1% obtained in Rhipicephalus genera. Analyses shows that the sequences obtained are phylogenetically related to T. orientalis complex. The finding from this study therefore expands the knowledge on recent emergence of Theileria and Rickettsia spp. in Raymond Mhlaba Municipality in Eastern Cape, South Africa
- Full Text:
- Date Issued: 2019
Germination potential of seeds harvested at the Worcester Veld Reserve
- Authors: Swart, Rudi
- Date: 2019
- Subjects: Ecological disturbances -- South Africa -- Karoo , Environmental degradation -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/43923 , vital:37084
- Description: The rangelands of the Succulent Karoo and Nama Karoo biomes are in various states of degradation. The injudicious stocking of overly high numbers of domestic livestock is considered to be the anthropogenic cause of this degradation. The palatable plants of these rangelands have been greatly reduced in number or extirpated from some areas. In order to return palatable plants to degraded rangelands and improve rangeland productivity, many restoration projects have been attempted that involve reseeding. The sowing of seeds into degraded rangelands, or other disturbed areas, has often provided disappointing germination results. This study will attempt to determine what some of the main aspects are that affect Karoo seed germination, both positively and negatively. The specific objectives of the study are to determine the causes of pre-sowing seed mortality, the effect of drying on seed germination, the effect of planting depth on seed germination and the effect of storage time on seed germination. The seeds of four palatable Karoo plant species harvested at the Worcester Veld Reserve were selected to be subjected to germination trails and viability testing. This study uses germination trials under controlled light and temperature conditions, as well as 2, 3, 5-triphenyl tetrazolium chloride tests to determine whether the four species of Karoo seeds harvested at the Worcester Veld Reserve for rangeland reseeding projects are viable and germinable. The practice of drying seeds after harvesting is tested to determine the effect of drying on seed germination. The germination of seed was also tested over 17 intervals of 3 weeks to determine the effect of storage time on seed germinability. Germination trials were also conducted in a nursery to determine whether there was a difference in seedling emergence between seeds planted at 10 mm depth compared to seeds planted on the surface with a partial covering of sand. The seed viability of all four species studied was found to be below 50%. Drying only significantly improved the germination of Osteospermum sinuatum seeds. The seeds of O. sinuatum and Eriocephalus africanus germinated reasonably well throughout the 17 time intervals, while the seeds of Chaetobromus involucratus and Gorteria integrifolia germinated poorly during the first six months after harvesting, after which v germination improved markedly. Seedling emergence of all four species studied was significantly higher when planted at the substrate surface, compared to seeds planted at 10 mm depth. The findings of this study show that while the viability of the seeds harvested for rangeland reseeding projects are quite low, the appropriate pre-treatment, seed age and planting depth will allow a significant increase in germination. This increase in germination should provide a greater chance of establishing palatable plants in rangeland reseeding projects.
- Full Text:
- Date Issued: 2019
- Authors: Swart, Rudi
- Date: 2019
- Subjects: Ecological disturbances -- South Africa -- Karoo , Environmental degradation -- South Africa -- Karoo
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/43923 , vital:37084
- Description: The rangelands of the Succulent Karoo and Nama Karoo biomes are in various states of degradation. The injudicious stocking of overly high numbers of domestic livestock is considered to be the anthropogenic cause of this degradation. The palatable plants of these rangelands have been greatly reduced in number or extirpated from some areas. In order to return palatable plants to degraded rangelands and improve rangeland productivity, many restoration projects have been attempted that involve reseeding. The sowing of seeds into degraded rangelands, or other disturbed areas, has often provided disappointing germination results. This study will attempt to determine what some of the main aspects are that affect Karoo seed germination, both positively and negatively. The specific objectives of the study are to determine the causes of pre-sowing seed mortality, the effect of drying on seed germination, the effect of planting depth on seed germination and the effect of storage time on seed germination. The seeds of four palatable Karoo plant species harvested at the Worcester Veld Reserve were selected to be subjected to germination trails and viability testing. This study uses germination trials under controlled light and temperature conditions, as well as 2, 3, 5-triphenyl tetrazolium chloride tests to determine whether the four species of Karoo seeds harvested at the Worcester Veld Reserve for rangeland reseeding projects are viable and germinable. The practice of drying seeds after harvesting is tested to determine the effect of drying on seed germination. The germination of seed was also tested over 17 intervals of 3 weeks to determine the effect of storage time on seed germinability. Germination trials were also conducted in a nursery to determine whether there was a difference in seedling emergence between seeds planted at 10 mm depth compared to seeds planted on the surface with a partial covering of sand. The seed viability of all four species studied was found to be below 50%. Drying only significantly improved the germination of Osteospermum sinuatum seeds. The seeds of O. sinuatum and Eriocephalus africanus germinated reasonably well throughout the 17 time intervals, while the seeds of Chaetobromus involucratus and Gorteria integrifolia germinated poorly during the first six months after harvesting, after which v germination improved markedly. Seedling emergence of all four species studied was significantly higher when planted at the substrate surface, compared to seeds planted at 10 mm depth. The findings of this study show that while the viability of the seeds harvested for rangeland reseeding projects are quite low, the appropriate pre-treatment, seed age and planting depth will allow a significant increase in germination. This increase in germination should provide a greater chance of establishing palatable plants in rangeland reseeding projects.
- Full Text:
- Date Issued: 2019
Government support and sustainable small, medium enterprises (SMEs) in the ocean economy: a case of Eastern Cape
- Authors: Zilimbola, Mlungiseleli
- Date: 2019
- Subjects: Small business -- South Africa -- Eastern Cape , Marine resources -- Economic aspects Shipping -- Economic aspects Sustainable development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44291 , vital:37149
- Description: In the past few years, South Africa has started to follow other developing countries, such as Japan and Greece, in pursuit of oceans economy. The presidency launched operation phakisa in Port Elizabeth in 2016 with the hope that it would contribute greatly to job creation and economic development in South Africa. It has been noted that oceans economy is a wide concept and covers a number of activities/sectors in the oceans. This study will focus on different economic is a wide concept and covers a number of activities, such as transport, fishing, bunkering and many other economic activities. This study seeks to investigate the strategic role of SMEs in the oceans economy. In accordance with the report drafted by the small enterprise development agency (seda) in 2016, which was commissioned by the department of trade and industry , the report show that SMMEs are struggling because of access to finance and markets, poor infrastructure, labour laws, crime, skills shortages.
- Full Text: false
- Date Issued: 2019
- Authors: Zilimbola, Mlungiseleli
- Date: 2019
- Subjects: Small business -- South Africa -- Eastern Cape , Marine resources -- Economic aspects Shipping -- Economic aspects Sustainable development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44291 , vital:37149
- Description: In the past few years, South Africa has started to follow other developing countries, such as Japan and Greece, in pursuit of oceans economy. The presidency launched operation phakisa in Port Elizabeth in 2016 with the hope that it would contribute greatly to job creation and economic development in South Africa. It has been noted that oceans economy is a wide concept and covers a number of activities/sectors in the oceans. This study will focus on different economic is a wide concept and covers a number of activities, such as transport, fishing, bunkering and many other economic activities. This study seeks to investigate the strategic role of SMEs in the oceans economy. In accordance with the report drafted by the small enterprise development agency (seda) in 2016, which was commissioned by the department of trade and industry , the report show that SMMEs are struggling because of access to finance and markets, poor infrastructure, labour laws, crime, skills shortages.
- Full Text: false
- Date Issued: 2019
Grabcuts for image segmentation: a comparative study of clustering techniques
- Authors: Manzi, Nozuko Zuleika
- Date: 2019
- Subjects: Algorithms , Computer graphics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14494 , vital:39995
- Description: Image segmentation is the partitioning of a digital image into small segments such as pixels or sets of pixels. It is significant as it allows for the visualization of structures of interest, removing unnecessary information. In addition, image segmentation is used in many fields like, for instance healthcare for image surgery, construction, etc. as it enables structure analysis. Segmentation of images can be computationally expensive especially when a large dataset is used, thus the importance of fast and effective segmentation algorithms is realised. This method is used to locate objects and boundaries (i.e. foreground and background) in images. The aim of this study is to provide a comparison of clustering techniques that would allow the Grabcuts for image segmentation algorithm to be effective and inexpensive. The Grabcuts based method, which is an extension of the graph cut based method, has been instrumental in solving many problems in computer vision i.e. image restoration, image segmentation, object recognition, tracking and analysis. According to Ramirez,et.al [47], the Grabcuts approach is an iterative and minimal user interaction algorithm as it chooses a segmentation by iteratively revising the foreground and background pixels assignments. The method uses min-cut/ max-flow algorithm to segment digital images proposed by Boykov and Jolly [9]. The input of this approach is a digital image with a selected v region of interest (ROI). The ROI is selected using a rectangular bounding box. The pixels inside the bounding box are assigned to the foreground, while the others are assigned to the background. In this study, the Grabcuts for image segmentation algorithm designed by [48] with a Gaussian Mixture Model (GMM) based on the Kmeans and Kmedoids clustering techniques are developed and compared. In addition, the algorithms developed are allowed to run on the Central Processing Unit (CPU) under two scenarios. Scenario 1 involves allowing the Kmeans and Kmedoids clustering techniques to the Squared Euclidean distance measures to calculate the similarities and dissimilarities in pixels in an image. In scenario 2, the Kmeans and Kmedoids clustering techniques will use the City Block distance measure to calculate similarities as well as dissimilarities between pixels in a given image. The same images from the Berkeley Segmentation Dataset and Benchmark 500 were used as input to the algorithms and the number of clusters, K, was varied from 2 to 5. It was observed that the Kmeans clustering technique outperformed the Kmedoids clustering technique under the two scenarios for all the test images with K varied from 2 to 5, in terms of runtime required. In addition, the Kmeans clustering technique obtained more compact and separate clusters under scenario 1, than its counterpart. On the other hand, the Kmedoids obtained more compact and separate clusters than the Kmeans clustering technique under scenario 2. The silhouette validity index favoured the smallest number of clusters for both clustering techniques as it suggested the optimal number of clusters for the Kmeans and Kmedoids clustering techniques under the two scenarios was 2. Although the Kmeans required less computation time than vi its counterpart, the generation of foreground and background took longer for the GMM based on Kmeans than it did for the GMM based on Kmedoids clustering technique. Furthermore, the Grabcuts for image segmentation algorithm with a GMM based on the Kmedoids clustering technique was computationally less expensive than the Grabcuts for image segmentation algorithm with a GMM based on the Kmeans clustering technique. This was observed to be true under both scenario 1 and 2. The Grabcuts for image with the GMM based on the Kmeans clustering techniques obtained slightly better segmentation results when the visual quality is concerned, than its counterpart under the two scenarios considered. On the other hand, the BFscores showed that the Grabcuts for image segmentation algorithm with the GMM based on Kmedoids produces images with higher BF-scores than its counterpart when K was varied from 2 to 5 for most of the test images. In addition, most of the images obtained the majority of their best segmentation results when K=2. This was observed to be true under scenario 1 as well as scenario 2. Therefore, the Kmedoids clustering technique under scenario 2 with K=2 would be the best option for the segmentation of difficult images in BSDS500. This is due to its ability to generate GMMs and segment difficult images more efficiently (i.e. time complexity, higher BF-scores, more under segmented rather than over segmented images, inter alia.) while producing comparable visual segmentation results to those obtained by the Grabcuts for image segmentation: GMM-Kmeans.
- Full Text:
- Date Issued: 2019
- Authors: Manzi, Nozuko Zuleika
- Date: 2019
- Subjects: Algorithms , Computer graphics
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14494 , vital:39995
- Description: Image segmentation is the partitioning of a digital image into small segments such as pixels or sets of pixels. It is significant as it allows for the visualization of structures of interest, removing unnecessary information. In addition, image segmentation is used in many fields like, for instance healthcare for image surgery, construction, etc. as it enables structure analysis. Segmentation of images can be computationally expensive especially when a large dataset is used, thus the importance of fast and effective segmentation algorithms is realised. This method is used to locate objects and boundaries (i.e. foreground and background) in images. The aim of this study is to provide a comparison of clustering techniques that would allow the Grabcuts for image segmentation algorithm to be effective and inexpensive. The Grabcuts based method, which is an extension of the graph cut based method, has been instrumental in solving many problems in computer vision i.e. image restoration, image segmentation, object recognition, tracking and analysis. According to Ramirez,et.al [47], the Grabcuts approach is an iterative and minimal user interaction algorithm as it chooses a segmentation by iteratively revising the foreground and background pixels assignments. The method uses min-cut/ max-flow algorithm to segment digital images proposed by Boykov and Jolly [9]. The input of this approach is a digital image with a selected v region of interest (ROI). The ROI is selected using a rectangular bounding box. The pixels inside the bounding box are assigned to the foreground, while the others are assigned to the background. In this study, the Grabcuts for image segmentation algorithm designed by [48] with a Gaussian Mixture Model (GMM) based on the Kmeans and Kmedoids clustering techniques are developed and compared. In addition, the algorithms developed are allowed to run on the Central Processing Unit (CPU) under two scenarios. Scenario 1 involves allowing the Kmeans and Kmedoids clustering techniques to the Squared Euclidean distance measures to calculate the similarities and dissimilarities in pixels in an image. In scenario 2, the Kmeans and Kmedoids clustering techniques will use the City Block distance measure to calculate similarities as well as dissimilarities between pixels in a given image. The same images from the Berkeley Segmentation Dataset and Benchmark 500 were used as input to the algorithms and the number of clusters, K, was varied from 2 to 5. It was observed that the Kmeans clustering technique outperformed the Kmedoids clustering technique under the two scenarios for all the test images with K varied from 2 to 5, in terms of runtime required. In addition, the Kmeans clustering technique obtained more compact and separate clusters under scenario 1, than its counterpart. On the other hand, the Kmedoids obtained more compact and separate clusters than the Kmeans clustering technique under scenario 2. The silhouette validity index favoured the smallest number of clusters for both clustering techniques as it suggested the optimal number of clusters for the Kmeans and Kmedoids clustering techniques under the two scenarios was 2. Although the Kmeans required less computation time than vi its counterpart, the generation of foreground and background took longer for the GMM based on Kmeans than it did for the GMM based on Kmedoids clustering technique. Furthermore, the Grabcuts for image segmentation algorithm with a GMM based on the Kmedoids clustering technique was computationally less expensive than the Grabcuts for image segmentation algorithm with a GMM based on the Kmeans clustering technique. This was observed to be true under both scenario 1 and 2. The Grabcuts for image with the GMM based on the Kmeans clustering techniques obtained slightly better segmentation results when the visual quality is concerned, than its counterpart under the two scenarios considered. On the other hand, the BFscores showed that the Grabcuts for image segmentation algorithm with the GMM based on Kmedoids produces images with higher BF-scores than its counterpart when K was varied from 2 to 5 for most of the test images. In addition, most of the images obtained the majority of their best segmentation results when K=2. This was observed to be true under scenario 1 as well as scenario 2. Therefore, the Kmedoids clustering technique under scenario 2 with K=2 would be the best option for the segmentation of difficult images in BSDS500. This is due to its ability to generate GMMs and segment difficult images more efficiently (i.e. time complexity, higher BF-scores, more under segmented rather than over segmented images, inter alia.) while producing comparable visual segmentation results to those obtained by the Grabcuts for image segmentation: GMM-Kmeans.
- Full Text:
- Date Issued: 2019
Green ship recycling as an alternative maritime industry for South Africa
- Authors: Nkalitshana, Malwande
- Date: 2019
- Subjects: Ships -- Recycling -- Environmental aspects , Ships -- Recycling -- South Africa Ships -- Scrapping
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/41852 , vital:36603
- Description: Ship recycling is a process of partially or completely dismantling of a vessel for various reasons with an intention of recovering some or all the material of it, for re-use and reprocessing. During economic recession, ship owners sell or send their old vessels for scraping to the ship recycling facilities to get some money out of its materials. Vessels are also dismantled normally when they reach a certain age where their usefulness at sea has deteriorated. Ship recycling offers socio-economic and environmental benefits and can assist with developing the port infrastructure, shipping building and repairs. Green Ship recycling can also create employment and business opportunities. Furthermore, ships are made up of almost 90% of recyclable material and with that, recycling of ships can contribute on the preservation and sustainable use of natural resources. In terms of global participation in the ship recycling sector, Asian countries are dominating, and they account for more than 80%. The remaining 20% is accounted by other countries excluding those within the African continent, South Africa in particular. Despite the long-term benefits associated with this sector, South Africa’s participation is very minimal nor absent at all, though it has its triple challenges that could be minimized by this sector. In mitigating the health, safety and health issues that associated with this industry, South African has legal instruments which protect the safety and health conditions of workers, and furthermore it is a signatory into international organizations that regulates ship recycling industry. For it to participate in this sector, a collaborative and partnership between government institutions, academic and research institutions and private sector needs to be established. Through these collaborations and innovative research on green ship recycling, South Africa stands an increasing chance of realization of the objectives of its economic policy; National Development Plan. In addition to these collaborations, South Africa should rectify Hong Kong convention and domesticate it through formulating pieces of legislations that would regulate green ship recycling practices. Transnet as state owned company responsible for ports in South Africa, upon these collaborations and deliberations, should allocate a site for this industry within the port environment. Furthermore, through ship recycling, South Africa could attain its Objectives of growing the economy and increased job creation as envisaged in Operation Phakisa.
- Full Text:
- Date Issued: 2019
- Authors: Nkalitshana, Malwande
- Date: 2019
- Subjects: Ships -- Recycling -- Environmental aspects , Ships -- Recycling -- South Africa Ships -- Scrapping
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/41852 , vital:36603
- Description: Ship recycling is a process of partially or completely dismantling of a vessel for various reasons with an intention of recovering some or all the material of it, for re-use and reprocessing. During economic recession, ship owners sell or send their old vessels for scraping to the ship recycling facilities to get some money out of its materials. Vessels are also dismantled normally when they reach a certain age where their usefulness at sea has deteriorated. Ship recycling offers socio-economic and environmental benefits and can assist with developing the port infrastructure, shipping building and repairs. Green Ship recycling can also create employment and business opportunities. Furthermore, ships are made up of almost 90% of recyclable material and with that, recycling of ships can contribute on the preservation and sustainable use of natural resources. In terms of global participation in the ship recycling sector, Asian countries are dominating, and they account for more than 80%. The remaining 20% is accounted by other countries excluding those within the African continent, South Africa in particular. Despite the long-term benefits associated with this sector, South Africa’s participation is very minimal nor absent at all, though it has its triple challenges that could be minimized by this sector. In mitigating the health, safety and health issues that associated with this industry, South African has legal instruments which protect the safety and health conditions of workers, and furthermore it is a signatory into international organizations that regulates ship recycling industry. For it to participate in this sector, a collaborative and partnership between government institutions, academic and research institutions and private sector needs to be established. Through these collaborations and innovative research on green ship recycling, South Africa stands an increasing chance of realization of the objectives of its economic policy; National Development Plan. In addition to these collaborations, South Africa should rectify Hong Kong convention and domesticate it through formulating pieces of legislations that would regulate green ship recycling practices. Transnet as state owned company responsible for ports in South Africa, upon these collaborations and deliberations, should allocate a site for this industry within the port environment. Furthermore, through ship recycling, South Africa could attain its Objectives of growing the economy and increased job creation as envisaged in Operation Phakisa.
- Full Text:
- Date Issued: 2019
Ground thermal regimes in Western Dronning Maud Land, Antarctica in 2016
- Authors: Masebe, Consliah Tebogo
- Date: 2019
- Subjects: Climatic changes -- Antarctica , Frozen ground -- Research -- Antarctica , Frozen ground -- Thermal properties -- Antarctica , Queen Maud Land , Earth temperature -- Antarctica , Soil temperature -- Antarctica -- Measurement
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/95581 , vital:31173
- Description: Research shows that the climate of Antarctica is changing and, it is vital that the change is monitored to understand how it will affect global ecosystems. Since the International Polar Year (IPY) 2007-2008, research in permafrost studies has grown. However, there are still existing gaps that impede complete understanding of Antarctic cold environments and landscape processes. Permafrost has been noted as one of the major controlling factors of the terrestrial ecosystem dynamics in Antarctica. However, the understanding of Antarctic permafrost, when compared to other cryospheric components, is limited, especially its thermal and physical properties, evolution, as well as links to pedogenesis, hydrology, geomorphic dynamics, and responses to global change. This project provided an understanding and insight to over-arching research that evaluates the state and status of permafrost and the active layer in Dronning Maud Land (DML) through examining short-term variations on ground thermal regimes. The main focus is on understanding the influence of synoptic, diurnal and seasonal events on the active layer in 2016. Analysis of available data shows that ground thermal regimes are influenced by variations in air temperature, pressure, wind speed and to some extent, relative humidity. Subsequently, ground thermal regimes also depend on soil physical characteristics including sediment particle size and bulk density. Furthermore, sediment particle size and bulk density have been found to have a great influence on thermal propagation rates as well as active layer depth; the higher the bulk density, the higher the thermal propagation rate and the lower the bulk density, the lower the thermal propagation rate. Conversely, a large proportion of bigger sediment particle size in soil corresponds with a higher thermal propagation rate and a large proportion of smaller sediment particle size in soil corresponds with a lower thermal propagation rate. Also, ground thermal regimes vary according to seasons. Ground temperatures are more variable in summer, while air temperatures are more variable in winter. The variability according to different seasons shows that the active layer responds to seasonal climatic variations. Additionally, the active layer also responds to synoptic and diurnal weather events.
- Full Text:
- Date Issued: 2019
- Authors: Masebe, Consliah Tebogo
- Date: 2019
- Subjects: Climatic changes -- Antarctica , Frozen ground -- Research -- Antarctica , Frozen ground -- Thermal properties -- Antarctica , Queen Maud Land , Earth temperature -- Antarctica , Soil temperature -- Antarctica -- Measurement
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/95581 , vital:31173
- Description: Research shows that the climate of Antarctica is changing and, it is vital that the change is monitored to understand how it will affect global ecosystems. Since the International Polar Year (IPY) 2007-2008, research in permafrost studies has grown. However, there are still existing gaps that impede complete understanding of Antarctic cold environments and landscape processes. Permafrost has been noted as one of the major controlling factors of the terrestrial ecosystem dynamics in Antarctica. However, the understanding of Antarctic permafrost, when compared to other cryospheric components, is limited, especially its thermal and physical properties, evolution, as well as links to pedogenesis, hydrology, geomorphic dynamics, and responses to global change. This project provided an understanding and insight to over-arching research that evaluates the state and status of permafrost and the active layer in Dronning Maud Land (DML) through examining short-term variations on ground thermal regimes. The main focus is on understanding the influence of synoptic, diurnal and seasonal events on the active layer in 2016. Analysis of available data shows that ground thermal regimes are influenced by variations in air temperature, pressure, wind speed and to some extent, relative humidity. Subsequently, ground thermal regimes also depend on soil physical characteristics including sediment particle size and bulk density. Furthermore, sediment particle size and bulk density have been found to have a great influence on thermal propagation rates as well as active layer depth; the higher the bulk density, the higher the thermal propagation rate and the lower the bulk density, the lower the thermal propagation rate. Conversely, a large proportion of bigger sediment particle size in soil corresponds with a higher thermal propagation rate and a large proportion of smaller sediment particle size in soil corresponds with a lower thermal propagation rate. Also, ground thermal regimes vary according to seasons. Ground temperatures are more variable in summer, while air temperatures are more variable in winter. The variability according to different seasons shows that the active layer responds to seasonal climatic variations. Additionally, the active layer also responds to synoptic and diurnal weather events.
- Full Text:
- Date Issued: 2019
Growing up with a parent who has a mental illness: exploring the development of resilience
- Authors: Hannie, Robyn
- Date: 2019
- Subjects: Psychology, Applied , Developmental psychology Mentally ill -- Family relationships Parenting -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/42320 , vital:36645
- Description: Mental illnesses are one of the world’s greatest health challenges and fall amongst the top ten contributing factors to disability. However, mental health has been one of the least prioritised health issues. Mental illness has major implications on the economy of the country, health services as well as on the quality of patients’ lives, their relatives and society. According to research studies, parental pathology has been identified as an adversarial life experience. Despite the risks associated with growing up with a parent who has a mental illness, some individuals still function well. Current understanding of resilience is that it is a dynamic bidirectional process that is influenced, developed or constructed by individuals in relation to their environment. The understanding of resilience in this context is crucial to foster the development of resilience in young people in similar contexts. This study aimed to explore and describe the experiences and development of resilience in individuals raised by a parent who has a mental illness. It attempted to do so by conducting seven face-to-face individual interviews. Qualitative methods and specifically thematic analysis was utilised to explore participants’ development of resilience in the context of parental mental illness. The findings are represented by four broad themes: challenges of growing up with a parent who has a mental illness, social support, mental health literacy and coping strategies that helped to develop resilience.
- Full Text:
- Date Issued: 2019
- Authors: Hannie, Robyn
- Date: 2019
- Subjects: Psychology, Applied , Developmental psychology Mentally ill -- Family relationships Parenting -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/42320 , vital:36645
- Description: Mental illnesses are one of the world’s greatest health challenges and fall amongst the top ten contributing factors to disability. However, mental health has been one of the least prioritised health issues. Mental illness has major implications on the economy of the country, health services as well as on the quality of patients’ lives, their relatives and society. According to research studies, parental pathology has been identified as an adversarial life experience. Despite the risks associated with growing up with a parent who has a mental illness, some individuals still function well. Current understanding of resilience is that it is a dynamic bidirectional process that is influenced, developed or constructed by individuals in relation to their environment. The understanding of resilience in this context is crucial to foster the development of resilience in young people in similar contexts. This study aimed to explore and describe the experiences and development of resilience in individuals raised by a parent who has a mental illness. It attempted to do so by conducting seven face-to-face individual interviews. Qualitative methods and specifically thematic analysis was utilised to explore participants’ development of resilience in the context of parental mental illness. The findings are represented by four broad themes: challenges of growing up with a parent who has a mental illness, social support, mental health literacy and coping strategies that helped to develop resilience.
- Full Text:
- Date Issued: 2019
Happiness in the South African construction industry
- Authors: Damba, Wayne
- Date: 2019
- Subjects: Happiness , Work -- Psychological aspects Psychology, Industrial Construction industry -- Psychological aspects Construction workers -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/38068 , vital:34313
- Description: Studies on Happiness, commonly referred to as Subjective Wellbeing studies, have gained much attention in the past few years. Happiness has been measured from a national level to specific areas or industry. Happiness generally refers to the positive state of wellbeing. Happiness has a positive effect on individuals and society at large. Research has shown that happy employees are purpose driven and productive. They are self-motivated and influence other employees positively. Happiness contributes significantly to economic growth and development. This has resulted in countries and many large institutions being interested in the happiness levels of the citizens and employees. This study focuses on Happiness in the South African Construction industry. South Africa is a developing country; thus, there are many infrastructure development projects. The construction industry is an important industry in the South African economy because of its contribution to employment and infrastructure development. Improving the happiness levels of the construction workers will improve the quality of work produced in the industry as well as reduce the costs that are associated with unproductive employees. Happy employees are innovative and engaged in work. The primary data were collected from a Construction Company in Cape Town. The Questionnaire was developed from the literature on happiness studies. Questionnaires were printed from Question Pro and circulated to the employees. 165 employees successfully completed the survey. A conceptual model was developed and exploratory factor analysis was used to test the model. The results indicate that influence in the workplace, workplace relationships, satisfaction with work-life balance, purpose, optimism, work satisfaction, leisure, SA Pride and trust were some of the variables which positively influences Happiness in the construction industry. The results of this study further indicate that South African construction workers are generally happy. Construction workers generally do not trust the government and management.
- Full Text:
- Date Issued: 2019
- Authors: Damba, Wayne
- Date: 2019
- Subjects: Happiness , Work -- Psychological aspects Psychology, Industrial Construction industry -- Psychological aspects Construction workers -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/38068 , vital:34313
- Description: Studies on Happiness, commonly referred to as Subjective Wellbeing studies, have gained much attention in the past few years. Happiness has been measured from a national level to specific areas or industry. Happiness generally refers to the positive state of wellbeing. Happiness has a positive effect on individuals and society at large. Research has shown that happy employees are purpose driven and productive. They are self-motivated and influence other employees positively. Happiness contributes significantly to economic growth and development. This has resulted in countries and many large institutions being interested in the happiness levels of the citizens and employees. This study focuses on Happiness in the South African Construction industry. South Africa is a developing country; thus, there are many infrastructure development projects. The construction industry is an important industry in the South African economy because of its contribution to employment and infrastructure development. Improving the happiness levels of the construction workers will improve the quality of work produced in the industry as well as reduce the costs that are associated with unproductive employees. Happy employees are innovative and engaged in work. The primary data were collected from a Construction Company in Cape Town. The Questionnaire was developed from the literature on happiness studies. Questionnaires were printed from Question Pro and circulated to the employees. 165 employees successfully completed the survey. A conceptual model was developed and exploratory factor analysis was used to test the model. The results indicate that influence in the workplace, workplace relationships, satisfaction with work-life balance, purpose, optimism, work satisfaction, leisure, SA Pride and trust were some of the variables which positively influences Happiness in the construction industry. The results of this study further indicate that South African construction workers are generally happy. Construction workers generally do not trust the government and management.
- Full Text:
- Date Issued: 2019
Hearing silenced voices: a learning-centred approach to sustainable land rehabilitation and natural resource management
- Authors: Wolff, Margaret Gascoyne
- Date: 2019
- Subjects: Watershed management -- South Africa -- Citizen participation , Water-supply -- Management -- Citizen participation , Environmental education -- South Africa
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/94958 , vital:31101
- Description: South Africa is a semi-arid country with dysfunctional water management. The National Water Act encourages integrated water resource management and public participation in contributing to strategies for managing water within delineated areas. Various challenges hamper progress of integrated water resource management and meaningful participation by residents in catchments across the country. One of the challenges is the lack of knowledge about their role in water resource management. By viewing catchments as complex social-ecological systems, this case study investigates how to establish a learning-centred approach to catchment management forum (CMF) formation. The study addressed three sub-questions: What activity systems need to be prioritised for community participation in CMF formation? What existing learning can be identified within the activity systems? What are the sources for expansive social learning in and between the activity systems? The study draws on social learning theory, and on cultural historical activity theory as it offers a methodological approach to identifying a learning-centred approach to learning in a catchment context. Drawing on this theoretical framework, for research question 1, I identified five activity systems that are present in the study area, are partly representative of the people who live in the area, and are linked to land and water governance either through their positions as government employees within the sector, or the NLEIP in ways that influence communities’ lives and livelihoods. To address question 2, I ran learning-centred workshops and interviewed people who lived in the study area. Careful, respectful listening and participants’ use of home language created the safe space in which residents revealed that they know which water resources are important to protect and where breakdowns in communication happen. For question 3, I analysed the data from the workshops and interviews using a cultural historical activity theory framework to identify discursive manifestations of contradictions within and between activity systems which illuminate the potential for expansive social learning. This study recommends developing an understanding of the complex social-ecological context and prioritising co-learning and community participation in a learning-centred approach to catchment management forum formation. For this, there is need to develop in-depth insight into activity systems associated with water governance in local contexts. In this study I identified five of these activity systems, but the study points to a further range of activity systems that need to be considered for a learning-centred approach to be fully established. The study also found that communities are learning via engaging in the rehabilitation work, through engagements in workshops and within the municipal structures. Additionally, the study identified a number of contradictions that can provide sources of learning for taking an expansive learning approach further in CMF formation. Such an approach may provide the space to build bridges of trust between diverse knowledge systems, and has the potential to encourage sustainable co-operation in natural resource management.
- Full Text:
- Date Issued: 2019
- Authors: Wolff, Margaret Gascoyne
- Date: 2019
- Subjects: Watershed management -- South Africa -- Citizen participation , Water-supply -- Management -- Citizen participation , Environmental education -- South Africa
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/94958 , vital:31101
- Description: South Africa is a semi-arid country with dysfunctional water management. The National Water Act encourages integrated water resource management and public participation in contributing to strategies for managing water within delineated areas. Various challenges hamper progress of integrated water resource management and meaningful participation by residents in catchments across the country. One of the challenges is the lack of knowledge about their role in water resource management. By viewing catchments as complex social-ecological systems, this case study investigates how to establish a learning-centred approach to catchment management forum (CMF) formation. The study addressed three sub-questions: What activity systems need to be prioritised for community participation in CMF formation? What existing learning can be identified within the activity systems? What are the sources for expansive social learning in and between the activity systems? The study draws on social learning theory, and on cultural historical activity theory as it offers a methodological approach to identifying a learning-centred approach to learning in a catchment context. Drawing on this theoretical framework, for research question 1, I identified five activity systems that are present in the study area, are partly representative of the people who live in the area, and are linked to land and water governance either through their positions as government employees within the sector, or the NLEIP in ways that influence communities’ lives and livelihoods. To address question 2, I ran learning-centred workshops and interviewed people who lived in the study area. Careful, respectful listening and participants’ use of home language created the safe space in which residents revealed that they know which water resources are important to protect and where breakdowns in communication happen. For question 3, I analysed the data from the workshops and interviews using a cultural historical activity theory framework to identify discursive manifestations of contradictions within and between activity systems which illuminate the potential for expansive social learning. This study recommends developing an understanding of the complex social-ecological context and prioritising co-learning and community participation in a learning-centred approach to catchment management forum formation. For this, there is need to develop in-depth insight into activity systems associated with water governance in local contexts. In this study I identified five of these activity systems, but the study points to a further range of activity systems that need to be considered for a learning-centred approach to be fully established. The study also found that communities are learning via engaging in the rehabilitation work, through engagements in workshops and within the municipal structures. Additionally, the study identified a number of contradictions that can provide sources of learning for taking an expansive learning approach further in CMF formation. Such an approach may provide the space to build bridges of trust between diverse knowledge systems, and has the potential to encourage sustainable co-operation in natural resource management.
- Full Text:
- Date Issued: 2019
How do urban dwellers identify with features within urban green spaces in the Eastern Cape?
- Authors: Manyani, Amanda
- Date: 2019
- Subjects: Land use, Urban -- South Africa , Greenbelts -- South Africa , City planning -- South Africa
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/95596 , vital:31174
- Description: Public urban green spaces contain natural and artificial features which play crucial roles in supporting urban social-ecological systems, a fact now recognized globally. The various natural and artificial features contained in public urban green spaces are said to be key contributors to the quality of life and well-being of urban dwellers. Nevertheless, this has been largely ignored in urban design in South Africa, especially in the poorer township and Reconstruction Development Program (RDP) areas. At the individual household and community levels within the poorer communities, the provision of green spaces and trees, as well as recreation facilities, is well below world standards, and much less than what is available in the more affluent areas of South African towns. Additionally, most research on the links between nature and human well-being in urban contexts comes from developed world contexts which adopt a westernized view of the relationship. Yet, in many societies of the Global South, including South Africa, worldviews and experiences of nature in green spaces and use of other recreational features takes on different meanings to those of the Global North. To show these differences, a combination of methods was used in this study, different types of green spaces were assessed and evaluated by structured observations so as to record the features present within the spaces. A survey of 360 households was conducted by targeting green space users and households within 100 metres from a green space. Results indicated that, across all the green space types, formal green spaces had a low cover of shrubs, trees and herbs whilst having high lawn cover. Furthermore, vegetation had poor rating across all the green spaces since the vegetation was either overgrown herbs, dense thickets of shrubs and mostly alien trees that were either diseased or forked. Similar to the disparity in the composition and structure of vegetation within the green spaces, there was a wide variability in the composition of recreational features and amenities across the green spaces. The formal green spaces had the most amenities like play equipment, shelter and seating. Informal green spaces and commonages had little or no recreational features available. The attributes of these spaces therefore influenced the reasons for visiting as more than 90 % of the respondents simply used the spaces for transit. With regards to attitudes and preferences towards particular features, they were emerging sense of strong negative feelings towards natural features. Most respondents emphasized the need for green spaces that are well laid out with maintained lawns, recreational facilities and open vegetation. Thus, the current design and available features within the studied urban green spaces do not meet local needs and aspirations and thus do not contribute to better well-being and quality of life as much as they could. Specifically, the various health benefits linked with being in contact with nature in the public green spaces were not evident in this study. The South African specific context in green space use, perception and people’s preferences is thus crucial for urban planning and sustainability.
- Full Text:
- Date Issued: 2019
- Authors: Manyani, Amanda
- Date: 2019
- Subjects: Land use, Urban -- South Africa , Greenbelts -- South Africa , City planning -- South Africa
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/95596 , vital:31174
- Description: Public urban green spaces contain natural and artificial features which play crucial roles in supporting urban social-ecological systems, a fact now recognized globally. The various natural and artificial features contained in public urban green spaces are said to be key contributors to the quality of life and well-being of urban dwellers. Nevertheless, this has been largely ignored in urban design in South Africa, especially in the poorer township and Reconstruction Development Program (RDP) areas. At the individual household and community levels within the poorer communities, the provision of green spaces and trees, as well as recreation facilities, is well below world standards, and much less than what is available in the more affluent areas of South African towns. Additionally, most research on the links between nature and human well-being in urban contexts comes from developed world contexts which adopt a westernized view of the relationship. Yet, in many societies of the Global South, including South Africa, worldviews and experiences of nature in green spaces and use of other recreational features takes on different meanings to those of the Global North. To show these differences, a combination of methods was used in this study, different types of green spaces were assessed and evaluated by structured observations so as to record the features present within the spaces. A survey of 360 households was conducted by targeting green space users and households within 100 metres from a green space. Results indicated that, across all the green space types, formal green spaces had a low cover of shrubs, trees and herbs whilst having high lawn cover. Furthermore, vegetation had poor rating across all the green spaces since the vegetation was either overgrown herbs, dense thickets of shrubs and mostly alien trees that were either diseased or forked. Similar to the disparity in the composition and structure of vegetation within the green spaces, there was a wide variability in the composition of recreational features and amenities across the green spaces. The formal green spaces had the most amenities like play equipment, shelter and seating. Informal green spaces and commonages had little or no recreational features available. The attributes of these spaces therefore influenced the reasons for visiting as more than 90 % of the respondents simply used the spaces for transit. With regards to attitudes and preferences towards particular features, they were emerging sense of strong negative feelings towards natural features. Most respondents emphasized the need for green spaces that are well laid out with maintained lawns, recreational facilities and open vegetation. Thus, the current design and available features within the studied urban green spaces do not meet local needs and aspirations and thus do not contribute to better well-being and quality of life as much as they could. Specifically, the various health benefits linked with being in contact with nature in the public green spaces were not evident in this study. The South African specific context in green space use, perception and people’s preferences is thus crucial for urban planning and sustainability.
- Full Text:
- Date Issued: 2019
Identification of possible natural compounds as potential inhibitors against Plasmodium M1 alanyl aminopeptidase
- Soliman, Omar Samir Abdel Ghaffar
- Authors: Soliman, Omar Samir Abdel Ghaffar
- Date: 2019
- Subjects: Plasmodium , Malaria -- Chemotherapy , Plasmodium -- Inhibitors , Drug resistance in microorganisms , Aminopeptidases
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/72284 , vital:30026
- Description: Malaria is a major tropical health problem with a 29% mortality rate among people of all ages; it also affects 35% of the children. Despite the decrease in mortality rate in recent years, malaria still results in around 2000 deaths per day. Malaria is caused by Plasmodium parasites and is transmitted to humans via the bites from infected female Anopheles mosquitoes during blood meals. There are five different Plasmodium species that can cause human malaria, which include Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae, Plasmodium ovale and Plasmodium knowlesi. Among these five species, the most pathogenic ones are Plasmodium falciparum and Plasmodium vivax. Malaria is usually hard to diagnose because the symptoms are not exclusive to malaria and very similar to flu, e.g., fever, muscle pain, and chills, which lead to the misdiagnosis of malaria cases. Malaria is lethal if not treated because it can cause severe complications in the respiratory tract, liver, metabolic acidosis, and hypoglycemia. The malaria parasite life cycle includes two types of hosts, i.e., a human host and female Anopheles mosquito host. Malaria continuously develops resistance to the available drugs, which is one of the major challenges in disease control. This situation confirms the need to develop new drugs that target virulence factors of malaria. The malarial parasite has three main life cycle stages, which include the host liver stage, host blood stage and vector stage. In the blood stage, parasites degrade hemoglobin to amino acids, which is important as these parasites cannot produce their own amino acids. Different proteases are involved in this hemoglobin degradation process. M1 alanyl aminopeptidase is one of these proteases involved at the end of hemoglobin degradation. This study focused on M1 alanyl aminopeptidase as a potential drug target. M1 alanyl aminopeptidase consists of four domains: N-terminal domain, catalytic domain, middle domain and C-terminal domain. The catalytic domain remains conserved among different Plasmodium species. Inhibition of this enzyme might prevent Plasmodium growth as it can’t produce its own amino acids. In this study, sequence analysis was carried out in both human and Plasmodium M1 alanyl aminopeptidase to identify conserved and divergent regions between them. 3D protein models of the M1 alanyl aminopeptidase from Plasmodium species were built and validated. Then the generated models were used for virtual screening against 623 compounds retrieved from the South African Natural Compounds Database (SANCDB, https://sancdb.rubi.ru.ac.za/). Virtual screening was done using blind and targeted docking methods. Docking was used to identify compounds with selective high binding affinity to the active site of the parasite protein. In this study, one SANCDB compound was selected for each protein: SANC00531 was selected against P. falciparum M1 alanyl aminopeptidase, SANC00469 against P. knowlesi, SANC00660 against P. vivax, SANC00144 against P. ovale and SANC00109 against P. malariae. It was found that Plamsodium M1 alanyl aminopeptidase can be used as a potential drug target as it showed selective binding against different inhibitor compounds. This result will be investigated in future work though molecular dynamic analysis to investigate the stability of protein-ligand complexes.
- Full Text:
- Date Issued: 2019
- Authors: Soliman, Omar Samir Abdel Ghaffar
- Date: 2019
- Subjects: Plasmodium , Malaria -- Chemotherapy , Plasmodium -- Inhibitors , Drug resistance in microorganisms , Aminopeptidases
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/72284 , vital:30026
- Description: Malaria is a major tropical health problem with a 29% mortality rate among people of all ages; it also affects 35% of the children. Despite the decrease in mortality rate in recent years, malaria still results in around 2000 deaths per day. Malaria is caused by Plasmodium parasites and is transmitted to humans via the bites from infected female Anopheles mosquitoes during blood meals. There are five different Plasmodium species that can cause human malaria, which include Plasmodium falciparum, Plasmodium vivax, Plasmodium malariae, Plasmodium ovale and Plasmodium knowlesi. Among these five species, the most pathogenic ones are Plasmodium falciparum and Plasmodium vivax. Malaria is usually hard to diagnose because the symptoms are not exclusive to malaria and very similar to flu, e.g., fever, muscle pain, and chills, which lead to the misdiagnosis of malaria cases. Malaria is lethal if not treated because it can cause severe complications in the respiratory tract, liver, metabolic acidosis, and hypoglycemia. The malaria parasite life cycle includes two types of hosts, i.e., a human host and female Anopheles mosquito host. Malaria continuously develops resistance to the available drugs, which is one of the major challenges in disease control. This situation confirms the need to develop new drugs that target virulence factors of malaria. The malarial parasite has three main life cycle stages, which include the host liver stage, host blood stage and vector stage. In the blood stage, parasites degrade hemoglobin to amino acids, which is important as these parasites cannot produce their own amino acids. Different proteases are involved in this hemoglobin degradation process. M1 alanyl aminopeptidase is one of these proteases involved at the end of hemoglobin degradation. This study focused on M1 alanyl aminopeptidase as a potential drug target. M1 alanyl aminopeptidase consists of four domains: N-terminal domain, catalytic domain, middle domain and C-terminal domain. The catalytic domain remains conserved among different Plasmodium species. Inhibition of this enzyme might prevent Plasmodium growth as it can’t produce its own amino acids. In this study, sequence analysis was carried out in both human and Plasmodium M1 alanyl aminopeptidase to identify conserved and divergent regions between them. 3D protein models of the M1 alanyl aminopeptidase from Plasmodium species were built and validated. Then the generated models were used for virtual screening against 623 compounds retrieved from the South African Natural Compounds Database (SANCDB, https://sancdb.rubi.ru.ac.za/). Virtual screening was done using blind and targeted docking methods. Docking was used to identify compounds with selective high binding affinity to the active site of the parasite protein. In this study, one SANCDB compound was selected for each protein: SANC00531 was selected against P. falciparum M1 alanyl aminopeptidase, SANC00469 against P. knowlesi, SANC00660 against P. vivax, SANC00144 against P. ovale and SANC00109 against P. malariae. It was found that Plamsodium M1 alanyl aminopeptidase can be used as a potential drug target as it showed selective binding against different inhibitor compounds. This result will be investigated in future work though molecular dynamic analysis to investigate the stability of protein-ligand complexes.
- Full Text:
- Date Issued: 2019
Identify strategies that tourism entrepreneurs can utilise to tap into the growing Eastern Cape tourism industry through exploration of craft beer tourism in Eastern Cape South Africa
- Authors: Matiti, Dibakazi
- Date: 2019
- Subjects: Tourism industry -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44545 , vital:38135
- Description: The Eastern Cape is regarded as one of the poorest provinces in South Africa. This has resulted in the province experiencing high unemployment rates. Small Micro and Medium Enterprises (SMMEs) have an important role to play in the creation of employment to alleviate the population’s dependence on government and to grow the economy of the Province of the Eastern Cape. Recent years have seen the growth of new registrations of micro manufactures. These businesses are independently owned and are appearing in all areas of the Eastern Cape. The Eastern Cape has also experienced growth in the tourism industry. Given the growth in these industries, gave rise to the objective of the study which was to formulate strategies that can be used by tourism entrepreneurs to tap into the growing Eastern Cape tourism industry through exploration of craft beer tourism in the Eastern Cape. To achieve the objective a review of the literature found that little has been done in the field of craft beer research. A further review of the literature showed that the Western Cape had a successful wine route and a craft beer route. Both were studied to determine the framework used in establishing the routes in order to liken it to what can be similarly applied to the Eastern Cape. A comparison was drawn between the craft-beer tourism in other parts of South Africa and the establishment and sustainability techniques employed in the South African wine tourism industry. The study followed an exploratory approach and data collection was carried out by taking the whole population of micro manufacturers. The insights of micro manufacturers were deemed crucial in the process of formulating the necessary strategies for the industry. Although there is growth in the number of craft-brewers registered with the Eastern Cape Liquor Board, the number is still very small and necessitated the use of the qualitative method in data collection. The feedback from the interviews was used to outline the strategy that can be used to ensure that craft brewers can enter the tourism industry and remain sustainable. Recommendations from the study show that the craft beer route and tourism can merge and create a profitable market for the Eastern Cape.
- Full Text:
- Date Issued: 2019
- Authors: Matiti, Dibakazi
- Date: 2019
- Subjects: Tourism industry -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/44545 , vital:38135
- Description: The Eastern Cape is regarded as one of the poorest provinces in South Africa. This has resulted in the province experiencing high unemployment rates. Small Micro and Medium Enterprises (SMMEs) have an important role to play in the creation of employment to alleviate the population’s dependence on government and to grow the economy of the Province of the Eastern Cape. Recent years have seen the growth of new registrations of micro manufactures. These businesses are independently owned and are appearing in all areas of the Eastern Cape. The Eastern Cape has also experienced growth in the tourism industry. Given the growth in these industries, gave rise to the objective of the study which was to formulate strategies that can be used by tourism entrepreneurs to tap into the growing Eastern Cape tourism industry through exploration of craft beer tourism in the Eastern Cape. To achieve the objective a review of the literature found that little has been done in the field of craft beer research. A further review of the literature showed that the Western Cape had a successful wine route and a craft beer route. Both were studied to determine the framework used in establishing the routes in order to liken it to what can be similarly applied to the Eastern Cape. A comparison was drawn between the craft-beer tourism in other parts of South Africa and the establishment and sustainability techniques employed in the South African wine tourism industry. The study followed an exploratory approach and data collection was carried out by taking the whole population of micro manufacturers. The insights of micro manufacturers were deemed crucial in the process of formulating the necessary strategies for the industry. Although there is growth in the number of craft-brewers registered with the Eastern Cape Liquor Board, the number is still very small and necessitated the use of the qualitative method in data collection. The feedback from the interviews was used to outline the strategy that can be used to ensure that craft brewers can enter the tourism industry and remain sustainable. Recommendations from the study show that the craft beer route and tourism can merge and create a profitable market for the Eastern Cape.
- Full Text:
- Date Issued: 2019
Identifying methane emissions with isotopic and hydrochemical clues to their origin across selected areas of the Karoo Basin, South Africa
- Authors: Campbell, Richard Duncombe
- Date: 2019
- Subjects: Methane -- Environmental aspects -- South Africa , Atmospheric methane -- Environmental aspects -- South Africa , Groundwater -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/42218 , vital:36636
- Description: Currently, only sparse data exists on the methane emissions from the Main Karoo Basin, South Africa, where the potential discovery of vast quantities of unconventional natural gas from the black shales of the Whitehill Formation has sparked great interest in the prospect of hydraulic fracturing. In this study, a new infield methane quantification instrument (Picarro G2201-i) is used to identify freely emitted methane and more importantly collect stable carbon isotope ratios (δ13C-(CH4)g) that is used in obtaining information regarding the genetic origin and thermal maturity of the methane. Hydrochemical information (TOC, δ13C-TOC, 3H, δ18O, δ2H, and anions) were also scrutinised to assist in the determination of the origin of methane across the Karoo Basin. Twenty-one sites were investigated across four provinces in the Main Karoo Basin. Six of these sites are thermal springs, three are shallow boreholes (<100 m in depth), and twelve were Soekor (The Southern Oil Exploration Corporation)/deep boreholes (>1500 m). Of these 21 sites, 17 were suitable for either methane analysis or groundwater sampling, with four of the Soekor boreholes unsuitable. The presence of methane in groundwater and being freely emitted seems to be a common occurrence above the Main Karoo basin and of the 17 sites investigated, 14 had freely emitted methane emission. All but one of these sites had δ13C-(CH4)g signatures greater than -50 ‰, indicating a thermogenic origin. Combining the results obtained from the Picarro instrument with those compiled by Talma & Esterhuyse (2015), a higher resolution distribution map was created. The δ13C-CH4 signatures show patterning with a decreasing trend from the southern Karoo Basin to the north, which corresponds to the general decrease in thermal maturity of the Ecca shales (Whitehill Formation) northward across the Karoo Basin. The δ13C-(CH4)d results from a case study conducted by Eymold et al. (2018) differ significantly with the data collected in this study that included several of the same sampling locations. This is explained by a two phase partitioning (gas + water) that leads to the thermogenic endmember of methane being released in its free state (analysed by Picarro G2201-i) and microbial methane that is formed in situ remains dissolved in the water (analysed by Eymold et al. 2018). Soekor and deep sites; SA 1/66, KA 1/66, and KWV-1 that have direct pathways for methane migration from the Whitehill are deemed the best proxies to resolve the thermogenic endmember of methane, with δ13C-(CH4)g signatures of -26.32‰, 31.66‰, and -34.57‰, respectively. The hydrochemistry results suggests that that free methane emissions do not necessarily have to be associated with saline Cl- waters, as multiple sites have CH4 emissions with low salinities (Cl < 50 mg/L) and that methane in its free state can migrate to the surface due to buoyancy. The results also indicate that dolerite intrusions act as conduits for upward migration of groundwater from depth, but that the deep groundwater signatures proposed by Murray et al., (2015) are related to their different migration pathways and water-rock interactions rather than being representative of the deep formation waters. Using an initial assessment δ13C-CH4, TOC concentration [TOC] and the tritium (3H) values, where water samples that have 3H ≤ 1 TU, detectable TOC and δ13C-CH4 signatures > -50‰ could indicate hydraulic connectivity between the shallow aquifer and an organic/CH4 rich sedimentary layer, which may or may not be from the Whitehill Formation. However, this method for determining aquifer connectivity requires further investigations in the Karoo Basin context. The results obtained in this study add to the limited isotopic data of methane across the Karoo Basin and demonstrates the effectiveness of an infield identification of methane emissions using the Picarro G2201-i.
- Full Text:
- Date Issued: 2019
- Authors: Campbell, Richard Duncombe
- Date: 2019
- Subjects: Methane -- Environmental aspects -- South Africa , Atmospheric methane -- Environmental aspects -- South Africa , Groundwater -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/42218 , vital:36636
- Description: Currently, only sparse data exists on the methane emissions from the Main Karoo Basin, South Africa, where the potential discovery of vast quantities of unconventional natural gas from the black shales of the Whitehill Formation has sparked great interest in the prospect of hydraulic fracturing. In this study, a new infield methane quantification instrument (Picarro G2201-i) is used to identify freely emitted methane and more importantly collect stable carbon isotope ratios (δ13C-(CH4)g) that is used in obtaining information regarding the genetic origin and thermal maturity of the methane. Hydrochemical information (TOC, δ13C-TOC, 3H, δ18O, δ2H, and anions) were also scrutinised to assist in the determination of the origin of methane across the Karoo Basin. Twenty-one sites were investigated across four provinces in the Main Karoo Basin. Six of these sites are thermal springs, three are shallow boreholes (<100 m in depth), and twelve were Soekor (The Southern Oil Exploration Corporation)/deep boreholes (>1500 m). Of these 21 sites, 17 were suitable for either methane analysis or groundwater sampling, with four of the Soekor boreholes unsuitable. The presence of methane in groundwater and being freely emitted seems to be a common occurrence above the Main Karoo basin and of the 17 sites investigated, 14 had freely emitted methane emission. All but one of these sites had δ13C-(CH4)g signatures greater than -50 ‰, indicating a thermogenic origin. Combining the results obtained from the Picarro instrument with those compiled by Talma & Esterhuyse (2015), a higher resolution distribution map was created. The δ13C-CH4 signatures show patterning with a decreasing trend from the southern Karoo Basin to the north, which corresponds to the general decrease in thermal maturity of the Ecca shales (Whitehill Formation) northward across the Karoo Basin. The δ13C-(CH4)d results from a case study conducted by Eymold et al. (2018) differ significantly with the data collected in this study that included several of the same sampling locations. This is explained by a two phase partitioning (gas + water) that leads to the thermogenic endmember of methane being released in its free state (analysed by Picarro G2201-i) and microbial methane that is formed in situ remains dissolved in the water (analysed by Eymold et al. 2018). Soekor and deep sites; SA 1/66, KA 1/66, and KWV-1 that have direct pathways for methane migration from the Whitehill are deemed the best proxies to resolve the thermogenic endmember of methane, with δ13C-(CH4)g signatures of -26.32‰, 31.66‰, and -34.57‰, respectively. The hydrochemistry results suggests that that free methane emissions do not necessarily have to be associated with saline Cl- waters, as multiple sites have CH4 emissions with low salinities (Cl < 50 mg/L) and that methane in its free state can migrate to the surface due to buoyancy. The results also indicate that dolerite intrusions act as conduits for upward migration of groundwater from depth, but that the deep groundwater signatures proposed by Murray et al., (2015) are related to their different migration pathways and water-rock interactions rather than being representative of the deep formation waters. Using an initial assessment δ13C-CH4, TOC concentration [TOC] and the tritium (3H) values, where water samples that have 3H ≤ 1 TU, detectable TOC and δ13C-CH4 signatures > -50‰ could indicate hydraulic connectivity between the shallow aquifer and an organic/CH4 rich sedimentary layer, which may or may not be from the Whitehill Formation. However, this method for determining aquifer connectivity requires further investigations in the Karoo Basin context. The results obtained in this study add to the limited isotopic data of methane across the Karoo Basin and demonstrates the effectiveness of an infield identification of methane emissions using the Picarro G2201-i.
- Full Text:
- Date Issued: 2019
If you strike a woman: an analysis of how women are represented in political cartoons of South Africa’s Women’s Day, 2009-2017
- Authors: Levin, Bianca
- Date: 2019
- Subjects: Caricatures and cartoons -- South Africa , Women in mass media -- South Africa , Political cartoons -- South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/92661 , vital:30731
- Description: On 7 August 2017, two days prior to South Africa’s National Women’s Day, video footage of a representative of the State, Mduduzi Manana, beating up a woman went viral. This marred the Women’s Day celebrations of that year, as it became clear to the public that the he was not going to be punished. As important political commentators, cartoonists used Manana’s actions as an opportunity to depict the violence women face, even in a month dedicated to women. In these cartoons, Manana became the face of a patriarchal system, one which has deeply affected the quality of life for women who, to date, cannot claim their Constitutional rights. This thesis is interested in the mini-narratives of such cartoons, ones which offer a view on the status of South African women. Through this qualitative study, a textual analysis in the spirit of Critical Discourse Analysis of seven selected cartoons leads to a discussion of what their representations of women means for gender justice. What this research shows is that the representations that cartoons offer of the position of women in South Africa are complex. These cartoons articulate that South Africa has a long way to go to reach equality and gender justice. In order for gender justice to be realised, the representation of women needs to evolve into one which recognises women’s plight but does not relegate them to the state of victimhood.
- Full Text:
- Date Issued: 2019
- Authors: Levin, Bianca
- Date: 2019
- Subjects: Caricatures and cartoons -- South Africa , Women in mass media -- South Africa , Political cartoons -- South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/92661 , vital:30731
- Description: On 7 August 2017, two days prior to South Africa’s National Women’s Day, video footage of a representative of the State, Mduduzi Manana, beating up a woman went viral. This marred the Women’s Day celebrations of that year, as it became clear to the public that the he was not going to be punished. As important political commentators, cartoonists used Manana’s actions as an opportunity to depict the violence women face, even in a month dedicated to women. In these cartoons, Manana became the face of a patriarchal system, one which has deeply affected the quality of life for women who, to date, cannot claim their Constitutional rights. This thesis is interested in the mini-narratives of such cartoons, ones which offer a view on the status of South African women. Through this qualitative study, a textual analysis in the spirit of Critical Discourse Analysis of seven selected cartoons leads to a discussion of what their representations of women means for gender justice. What this research shows is that the representations that cartoons offer of the position of women in South Africa are complex. These cartoons articulate that South Africa has a long way to go to reach equality and gender justice. In order for gender justice to be realised, the representation of women needs to evolve into one which recognises women’s plight but does not relegate them to the state of victimhood.
- Full Text:
- Date Issued: 2019
Implementation and management of code of conduct in addressing service delivery, in the Eastern Cape department of basic education
- Authors: Mhambi, Mbulelo
- Date: 2019
- Subjects: Professional ethics Code of life
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10353/16940 , vital:40787
- Description: The study seeks to assess and examine the management and implementation of the code of conduct by the Eastern Cape Department of Basic Education in addressing service delivery in the Province. The reason for the Researcher to undertake the study is influenced among others by poor of service delivery, maladministration and corruption reported in this department through media, newspapers, Auditor General (AG) Reports and Portfolio Committee on Basic Education Eastern Cape Legislature which act as the oversight mechanism for this department. Literature review was conducted as a secondary source of information and primary information was conducted through sample of 30 respondents which were selected by the Researcher. The respondents were from the most key units of the department of Education Eastern Cape, which are stated in chapter one of the study. The study followed qualitative research approach which included semi-structured questionnaire, observation and document analysis. The findings of the study indicate lack of management and implementation of the code of conduct by the department. They clearly shows, lack of awareness and understanding of the code itself by the general staff members, lack of discipline, poor employee attitude, and unwillingness to improve service delivery and corruption in the department systems. The findings of the study expose lack of understanding of the code of conduct by the civil servants in the Department of Education, Eastern Cape. This can be attributed to lack of induction, orientation and training, in order to understand the importance of the code of conduct. Document analysis revealed that, there was lack of adherence and observation of the department’s established policies, rules, regulations, procedures and flouting of supply chain management processes and corruption in the system which is tantamount to violation of the DPSA code of conduct. These factors all contributed to this department’s failure in achieving clean audit outcomes from the AG during the last term. Department of Basic Education, Eastern Cape Province, received qualified and adverse audit reports between 2009 and 2014 financial years. The study recommends trainings of the department of education officials in the DPSA code of conduct. More vigorous on going ethical training is very crucial in the attempt to promote ethical behaviour, to root out corruption, under performance and vi maladministration activities experienced in this department so as to fast track service delivery to the people of the Province, in the following terms of Government administration going forward.
- Full Text:
- Date Issued: 2019
- Authors: Mhambi, Mbulelo
- Date: 2019
- Subjects: Professional ethics Code of life
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10353/16940 , vital:40787
- Description: The study seeks to assess and examine the management and implementation of the code of conduct by the Eastern Cape Department of Basic Education in addressing service delivery in the Province. The reason for the Researcher to undertake the study is influenced among others by poor of service delivery, maladministration and corruption reported in this department through media, newspapers, Auditor General (AG) Reports and Portfolio Committee on Basic Education Eastern Cape Legislature which act as the oversight mechanism for this department. Literature review was conducted as a secondary source of information and primary information was conducted through sample of 30 respondents which were selected by the Researcher. The respondents were from the most key units of the department of Education Eastern Cape, which are stated in chapter one of the study. The study followed qualitative research approach which included semi-structured questionnaire, observation and document analysis. The findings of the study indicate lack of management and implementation of the code of conduct by the department. They clearly shows, lack of awareness and understanding of the code itself by the general staff members, lack of discipline, poor employee attitude, and unwillingness to improve service delivery and corruption in the department systems. The findings of the study expose lack of understanding of the code of conduct by the civil servants in the Department of Education, Eastern Cape. This can be attributed to lack of induction, orientation and training, in order to understand the importance of the code of conduct. Document analysis revealed that, there was lack of adherence and observation of the department’s established policies, rules, regulations, procedures and flouting of supply chain management processes and corruption in the system which is tantamount to violation of the DPSA code of conduct. These factors all contributed to this department’s failure in achieving clean audit outcomes from the AG during the last term. Department of Basic Education, Eastern Cape Province, received qualified and adverse audit reports between 2009 and 2014 financial years. The study recommends trainings of the department of education officials in the DPSA code of conduct. More vigorous on going ethical training is very crucial in the attempt to promote ethical behaviour, to root out corruption, under performance and vi maladministration activities experienced in this department so as to fast track service delivery to the people of the Province, in the following terms of Government administration going forward.
- Full Text:
- Date Issued: 2019
Improvements and optimization for a functional low-cost prosthetic hand
- Authors: Setty, Kiran
- Date: 2019
- Subjects: Biomechanics , Artificial limbs -- Design , Prosthesis -- Design
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/43655 , vital:36955
- Description: The following study investigates the work of the Touch Hand 4, which involves the development of a lowcost myoelectric prosthetic terminal hand device for transradial amputees. The Touch Hand 4 is an iteration of the Touch Hand project which attempts to make a functional, low-cost prosthetic hand which is capable of being accessible to more people relative to conventional myoelectric prosthetic hands as well as being used as a robotic UAV gripper. This research is motivated due to the lack of affordable myoelectric prosthetic hands in the global market. It is believed, with the current technology, it is capable of developing a prosthetic hand which can meet these needs. Research was performed through reviewing other prosthetic hands to understand the requirements for a prosthetic hand as well as understanding the market of prosthetic hands. Prosthetists were interviewed to obtain a perspective from medial professionals regarding the requirements for a prosthetic hand. Hand kinesiology was performed to understand the biomechanics of the human hand, which was emulated in the design of the Touch Hand 4. The mechanical design begun with developing and testing a concept design, which was used to design the general shape of the Touch Hand 4. SLS was chosen to print the prosthetic hand with. After performing a kinematics and static force simulation, the mechanical system was designed accordingly. Further research on EMG sensors was then performed to understand the requirements of using EMG signals to control a prosthetic hand. The electronics and control system were then designed according to the requirements of the prosthetic hand. Tests were performed, however, tests performed with an amputee using the device was affected to improper placement of the EMG sensors, leading to poor results. Tests performed without an amputee, however, showed that the prosthetic hand is capable of gripping various objects of different shapes and sizes. An investigation was also performed on the contributions the Touch Hand 4 could make as a UAV gripper, which showed that the Touch Hand 4 is more adaptable and versatile than any other UAV gripper available on the market.
- Full Text:
- Date Issued: 2019
- Authors: Setty, Kiran
- Date: 2019
- Subjects: Biomechanics , Artificial limbs -- Design , Prosthesis -- Design
- Language: English
- Type: Thesis , Masters , MEng
- Identifier: http://hdl.handle.net/10948/43655 , vital:36955
- Description: The following study investigates the work of the Touch Hand 4, which involves the development of a lowcost myoelectric prosthetic terminal hand device for transradial amputees. The Touch Hand 4 is an iteration of the Touch Hand project which attempts to make a functional, low-cost prosthetic hand which is capable of being accessible to more people relative to conventional myoelectric prosthetic hands as well as being used as a robotic UAV gripper. This research is motivated due to the lack of affordable myoelectric prosthetic hands in the global market. It is believed, with the current technology, it is capable of developing a prosthetic hand which can meet these needs. Research was performed through reviewing other prosthetic hands to understand the requirements for a prosthetic hand as well as understanding the market of prosthetic hands. Prosthetists were interviewed to obtain a perspective from medial professionals regarding the requirements for a prosthetic hand. Hand kinesiology was performed to understand the biomechanics of the human hand, which was emulated in the design of the Touch Hand 4. The mechanical design begun with developing and testing a concept design, which was used to design the general shape of the Touch Hand 4. SLS was chosen to print the prosthetic hand with. After performing a kinematics and static force simulation, the mechanical system was designed accordingly. Further research on EMG sensors was then performed to understand the requirements of using EMG signals to control a prosthetic hand. The electronics and control system were then designed according to the requirements of the prosthetic hand. Tests were performed, however, tests performed with an amputee using the device was affected to improper placement of the EMG sensors, leading to poor results. Tests performed without an amputee, however, showed that the prosthetic hand is capable of gripping various objects of different shapes and sizes. An investigation was also performed on the contributions the Touch Hand 4 could make as a UAV gripper, which showed that the Touch Hand 4 is more adaptable and versatile than any other UAV gripper available on the market.
- Full Text:
- Date Issued: 2019
Improving organisational effectiveness through employee engagement: a proposed framework
- Authors: Mabasa, Jerry Mandla
- Date: 2019
- Subjects: Organisational effectiveness -- South Africa -- Nelson Mandela Bay Municipality , Employee motivation Organizational behavior Work environment -- Employees
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/40657 , vital:36207
- Description: South African-based automotive industry firms have been largely characterised by fierce competition at the global level. In order to compete effectively, business leaders have to align business strategies and adopt the best practice approach to gain a competitive advantage among rivals. The majority of this practice requires a high level of employee buy-in to ensure effective, sustainable and successful implementation. Hence, employees become a key stakeholder for improving the organisational competitive advantage and the business leader must continuously find sustainable methods for engaging their employees in order to raise the effectiveness of the organisation. In view of these notions, this study was grounded in the social exchange theory. Against this background, the main objective of this study was to evaluate the levels of several Employee Engagement drivers, namely Positive Mood, Personal Vision, Compensation, Team and Co-worker Relationships, Organisational Support and Leadership and to investigate their influence on the levels of Employee Engagement and Organisational Effectiveness to businesses in the automotive industry in Nelson Mandela Bay, Eastern Cape. To evaluate the conceptual framework suggested by this study based on the literature review, an empirical assessment was performed amongst the employees of Nelson Mandela Bay‟s automotive sector manufacturers through the application of an electronically distributed questionnaire. The selection of the sample was performed using convenience sampling. A total of 135 usable questionnaires were returned with which to undertake the statistical analysis. The findings showed that the demographic variables investigated in this study had no influence on the way in which employees‟ perceived engagement in the workplace. In order to assess the validity of the dependent variables successfully, namely employee engagement and organisational effectiveness, inferential statistics were performed. Inferential statistics commenced by investigating the reliability of the empirical data. It was concluded that all variables returned Cronbach‟s alpha coefficients greater than 0.7, except for the Team and Co-Worker Relationships independent variable. Hence, sufficient evidence of reliability and validity for the items measuring the dependent and the independent variables was provided. The items intended to measure Team and Co-Worker Relationships did not load as expected and the variable was subsequently eliminated from further analysis, resulting in the revised conceptual framework. Correlation analysis revealed that none of the variables were strongly correlated. The subsequent multiple regression analyses revealed that only the Organisational Support variable investigated in this study had a significant positive influence on both the Employee Engagement and Organisational Effectiveness variables. On the other hand, Leadership only had a significant positive influence on Organisational Effectiveness, while positive emotions (measured by the Positive Mood and Personal Vision variables) had a significant positive influence on Employee Engagement. In addition, the results of this study showed that the Employee Engagement variable mediates the relationship between the Positive Mood, Personal Vision and Organisational Support and Organisational Effectiveness variables. However, it does not mediate the relationship between the Leadership and Organisational Effectiveness variables. Given the findings of this study, a number of recommendations are put forward to enhance the levels of Positive Mood, Personal Vision, Organisational Support and Leadership qualities among employees, and to ultimately enhance the levels of Employee engagement and Organisational Effectiveness.
- Full Text:
- Date Issued: 2019
- Authors: Mabasa, Jerry Mandla
- Date: 2019
- Subjects: Organisational effectiveness -- South Africa -- Nelson Mandela Bay Municipality , Employee motivation Organizational behavior Work environment -- Employees
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/40657 , vital:36207
- Description: South African-based automotive industry firms have been largely characterised by fierce competition at the global level. In order to compete effectively, business leaders have to align business strategies and adopt the best practice approach to gain a competitive advantage among rivals. The majority of this practice requires a high level of employee buy-in to ensure effective, sustainable and successful implementation. Hence, employees become a key stakeholder for improving the organisational competitive advantage and the business leader must continuously find sustainable methods for engaging their employees in order to raise the effectiveness of the organisation. In view of these notions, this study was grounded in the social exchange theory. Against this background, the main objective of this study was to evaluate the levels of several Employee Engagement drivers, namely Positive Mood, Personal Vision, Compensation, Team and Co-worker Relationships, Organisational Support and Leadership and to investigate their influence on the levels of Employee Engagement and Organisational Effectiveness to businesses in the automotive industry in Nelson Mandela Bay, Eastern Cape. To evaluate the conceptual framework suggested by this study based on the literature review, an empirical assessment was performed amongst the employees of Nelson Mandela Bay‟s automotive sector manufacturers through the application of an electronically distributed questionnaire. The selection of the sample was performed using convenience sampling. A total of 135 usable questionnaires were returned with which to undertake the statistical analysis. The findings showed that the demographic variables investigated in this study had no influence on the way in which employees‟ perceived engagement in the workplace. In order to assess the validity of the dependent variables successfully, namely employee engagement and organisational effectiveness, inferential statistics were performed. Inferential statistics commenced by investigating the reliability of the empirical data. It was concluded that all variables returned Cronbach‟s alpha coefficients greater than 0.7, except for the Team and Co-Worker Relationships independent variable. Hence, sufficient evidence of reliability and validity for the items measuring the dependent and the independent variables was provided. The items intended to measure Team and Co-Worker Relationships did not load as expected and the variable was subsequently eliminated from further analysis, resulting in the revised conceptual framework. Correlation analysis revealed that none of the variables were strongly correlated. The subsequent multiple regression analyses revealed that only the Organisational Support variable investigated in this study had a significant positive influence on both the Employee Engagement and Organisational Effectiveness variables. On the other hand, Leadership only had a significant positive influence on Organisational Effectiveness, while positive emotions (measured by the Positive Mood and Personal Vision variables) had a significant positive influence on Employee Engagement. In addition, the results of this study showed that the Employee Engagement variable mediates the relationship between the Positive Mood, Personal Vision and Organisational Support and Organisational Effectiveness variables. However, it does not mediate the relationship between the Leadership and Organisational Effectiveness variables. Given the findings of this study, a number of recommendations are put forward to enhance the levels of Positive Mood, Personal Vision, Organisational Support and Leadership qualities among employees, and to ultimately enhance the levels of Employee engagement and Organisational Effectiveness.
- Full Text:
- Date Issued: 2019
Improving public participation through ward based planning in Port St Johns Local Municipality
- Authors: Koninga, Siyabonga
- Date: 2019
- Subjects: Political participation -- South Africa -- Eastern Cape , Social participation -- South Africa -- Eastern Cape Local government -- South Africa -- Eastern Cape Public Administration -- South Africa
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/45194 , vital:38262
- Description: This research study deals with ways in which to improve public participation through ward based planning in Port St Johns local municipality. Public participation in South Africa is important, as it is the backbone of the democratic state that was introduced by the 1994 democratic elections. Public participation is essentially a process that engages communities from the planning phase to the implementation and evaluation phases of a particular activity or project. Public participation has become a key aspect of South African planning and is a recurring theme in several legislative and theoretical documents. Public participation is a principle that is accepted throughout all spheres of government. It is important because it is the only method whereby government can gain a sense of the needs and aspirations of the various communities. With specific reference to municipalities, public participation is enhanced through the establishment of ward based planning. The Port St Johns ward based planning process has not only been an opportunity for households and communities to contribute to the integrated development plan (IDP), it has also provided them with access to information. This is the first step towards re-skilling our people to participate in the knowledge economy. The ward based planning process provides a link between municipal level planning and delivery and activities at ward level. Port St Johns’ ward based planning process is the vehicle for entrenching participation in the IDP in order to maximise co-ordination and synergy between priorities and municipal programs. The main objective and aim of the study was to advance recommendations that may be adopted as solutions to Port St Johns’ municipal management for improving a strategy for the public to participate in municipal activities. In conclusion, this study found that community based planning does influence the municipality’s integrated development plan but its effectiveness lies in proper planning and giving it the attention it deserves as one of the tools to be used to improve public participation in the affairs of the Port St Johns Municipality.
- Full Text:
- Date Issued: 2019
- Authors: Koninga, Siyabonga
- Date: 2019
- Subjects: Political participation -- South Africa -- Eastern Cape , Social participation -- South Africa -- Eastern Cape Local government -- South Africa -- Eastern Cape Public Administration -- South Africa
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/45194 , vital:38262
- Description: This research study deals with ways in which to improve public participation through ward based planning in Port St Johns local municipality. Public participation in South Africa is important, as it is the backbone of the democratic state that was introduced by the 1994 democratic elections. Public participation is essentially a process that engages communities from the planning phase to the implementation and evaluation phases of a particular activity or project. Public participation has become a key aspect of South African planning and is a recurring theme in several legislative and theoretical documents. Public participation is a principle that is accepted throughout all spheres of government. It is important because it is the only method whereby government can gain a sense of the needs and aspirations of the various communities. With specific reference to municipalities, public participation is enhanced through the establishment of ward based planning. The Port St Johns ward based planning process has not only been an opportunity for households and communities to contribute to the integrated development plan (IDP), it has also provided them with access to information. This is the first step towards re-skilling our people to participate in the knowledge economy. The ward based planning process provides a link between municipal level planning and delivery and activities at ward level. Port St Johns’ ward based planning process is the vehicle for entrenching participation in the IDP in order to maximise co-ordination and synergy between priorities and municipal programs. The main objective and aim of the study was to advance recommendations that may be adopted as solutions to Port St Johns’ municipal management for improving a strategy for the public to participate in municipal activities. In conclusion, this study found that community based planning does influence the municipality’s integrated development plan but its effectiveness lies in proper planning and giving it the attention it deserves as one of the tools to be used to improve public participation in the affairs of the Port St Johns Municipality.
- Full Text:
- Date Issued: 2019
Improving public participation through ward based planning in Port St Johns Local Municipality
- Authors: Koninga, Siyabonga
- Date: 2019
- Subjects: Public participation
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/44720 , vital:38158
- Description: This research study deals with ways in which to improve public participation through ward based planning in Port St Johns local municipality. Public participation in South Africa is important, as it is the backbone of the democratic state that was introduced by the 1994 democratic elections. Public participation is essentially a process that engages communities from the planning phase to the implementation and evaluation phases of a particular activity or project. Public participation has become a key aspect of South African planning and is a recurring theme in several legislative and theoretical documents. Public participation is a principle that is accepted throughout all spheres of government. It is important because it is the only method whereby government can gain a sense of the needs and aspirations of the various communities. With specific reference to municipalities, public participation is enhanced through the establishment of ward based planning. The Port St Johns ward based planning process has not only been an opportunity for households and communities to contribute to the integrated development plan (IDP), it has also provided them with access to information. This is the first step towards re-skilling our people to participate in the knowledge economy. The ward based planning process provides a link between municipal level planning and delivery and activities at ward level. Port St Johns’ ward based planning process is the vehicle for entrenching participation in the IDP in order to maximise co-ordination and synergy between priorities and municipal programs. The main objective and aim of the study was to advance recommendations that may be adopted as solutions to Port St Johns’ municipal management for improving a strategy for the public to participate in municipal activities. In conclusion, this study found that community based planning does influence the municipality’s integrated development plan but its effectiveness lies in proper planning and giving it the attention it deserves as one of the tools to be used to improve public participation in the affairs of the Port St Johns Municipality.
- Full Text:
- Date Issued: 2019
- Authors: Koninga, Siyabonga
- Date: 2019
- Subjects: Public participation
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: http://hdl.handle.net/10948/44720 , vital:38158
- Description: This research study deals with ways in which to improve public participation through ward based planning in Port St Johns local municipality. Public participation in South Africa is important, as it is the backbone of the democratic state that was introduced by the 1994 democratic elections. Public participation is essentially a process that engages communities from the planning phase to the implementation and evaluation phases of a particular activity or project. Public participation has become a key aspect of South African planning and is a recurring theme in several legislative and theoretical documents. Public participation is a principle that is accepted throughout all spheres of government. It is important because it is the only method whereby government can gain a sense of the needs and aspirations of the various communities. With specific reference to municipalities, public participation is enhanced through the establishment of ward based planning. The Port St Johns ward based planning process has not only been an opportunity for households and communities to contribute to the integrated development plan (IDP), it has also provided them with access to information. This is the first step towards re-skilling our people to participate in the knowledge economy. The ward based planning process provides a link between municipal level planning and delivery and activities at ward level. Port St Johns’ ward based planning process is the vehicle for entrenching participation in the IDP in order to maximise co-ordination and synergy between priorities and municipal programs. The main objective and aim of the study was to advance recommendations that may be adopted as solutions to Port St Johns’ municipal management for improving a strategy for the public to participate in municipal activities. In conclusion, this study found that community based planning does influence the municipality’s integrated development plan but its effectiveness lies in proper planning and giving it the attention it deserves as one of the tools to be used to improve public participation in the affairs of the Port St Johns Municipality.
- Full Text:
- Date Issued: 2019
Improving the business success of SMMEs in the South African construction industry: the case of SMMEs in the city of Port Elizabeth
- Authors: Swapi, Sibongiseni
- Date: 2019
- Subjects: Success in business -- South Africa -- Port Elizabeth , Small business -- South Africa -- Port Elizabeth Construction industry -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/43934 , vital:37085
- Description: This research has aimed at designing a framework for effective management of different Small Medium and Micro Enterprises (SMMEs) in the construction industry of South Africa. The research is derived from the SMMEs in Port Elizabeth. The research adopted a descriptive design and qualitative research methodology in order to achieve the research objectives. The research population of this research covered fifty (50) professional employees of SMMEs in the construction industry of Port Elizabeth, South Africa. It has been revealed in this research that there is a significant lack of management skills and training in the industry. Many construction SMMEs are also unable to access sufficient financial resources and government support for their operations. In this regard, the most important requirement has been found to be education and training for the employees working in the South African SMMEs in the construction industry. Along with this, government support and intervention is also required so that the SMMEs in the construction industry are able to access sufficient financial resources for building proper infrastructure. This research has also proposed an effective management framework that may include contract management, asset management as well as risk management of the South African SMMEs in the construction industry.
- Full Text:
- Date Issued: 2019
- Authors: Swapi, Sibongiseni
- Date: 2019
- Subjects: Success in business -- South Africa -- Port Elizabeth , Small business -- South Africa -- Port Elizabeth Construction industry -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/43934 , vital:37085
- Description: This research has aimed at designing a framework for effective management of different Small Medium and Micro Enterprises (SMMEs) in the construction industry of South Africa. The research is derived from the SMMEs in Port Elizabeth. The research adopted a descriptive design and qualitative research methodology in order to achieve the research objectives. The research population of this research covered fifty (50) professional employees of SMMEs in the construction industry of Port Elizabeth, South Africa. It has been revealed in this research that there is a significant lack of management skills and training in the industry. Many construction SMMEs are also unable to access sufficient financial resources and government support for their operations. In this regard, the most important requirement has been found to be education and training for the employees working in the South African SMMEs in the construction industry. Along with this, government support and intervention is also required so that the SMMEs in the construction industry are able to access sufficient financial resources for building proper infrastructure. This research has also proposed an effective management framework that may include contract management, asset management as well as risk management of the South African SMMEs in the construction industry.
- Full Text:
- Date Issued: 2019