Factors that impact the use of digital learning in higher education
- Authors: Mtshabe Mxolisi
- Date: 2022-12
- Subjects: Education, Higher , Blended learning , Communication of technical information
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59576 , vital:62174
- Description: Higher Education Institutions (HEIs) have significantly changed the way they execute their pedagogical processes. This is so, mainly because of the innovations and developments in the ICT sector. HEIs have always succeeded in the implementation of ICT tools for the facilitation of the process of teaching and learning; however, they have faced many challenges related to the utilisation of these tools. Digital learning is among the ICT tools considered by the majority of HEIs to be relevant at this age of digitisation. ICT has introduced a variety of tools, not only for teaching and learning environments, but also for socialisation. These tools include social media tools that are used to achieve different activities in response to the demands of society. In making a comparison between social media and pedagogical tools, there is a huge gap in the level of usage of the two. Social media is much more being used than digital learning and this brings major concerns because users seem to be more interested in social media tools to perform academic activities, than in digital learning. This study has explored the factors that could play a role in digital learning and social media usage in HEIs. The study employed quantitative research methods and a survey was developed and distributed to former university students. The purpose of the study was to formulate a checklist that will inform the factors that impact the use of digital learning in HEIs. At the conclusion of the study, the checklist was formulated and recommendations were made. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Mtshabe Mxolisi
- Date: 2022-12
- Subjects: Education, Higher , Blended learning , Communication of technical information
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59576 , vital:62174
- Description: Higher Education Institutions (HEIs) have significantly changed the way they execute their pedagogical processes. This is so, mainly because of the innovations and developments in the ICT sector. HEIs have always succeeded in the implementation of ICT tools for the facilitation of the process of teaching and learning; however, they have faced many challenges related to the utilisation of these tools. Digital learning is among the ICT tools considered by the majority of HEIs to be relevant at this age of digitisation. ICT has introduced a variety of tools, not only for teaching and learning environments, but also for socialisation. These tools include social media tools that are used to achieve different activities in response to the demands of society. In making a comparison between social media and pedagogical tools, there is a huge gap in the level of usage of the two. Social media is much more being used than digital learning and this brings major concerns because users seem to be more interested in social media tools to perform academic activities, than in digital learning. This study has explored the factors that could play a role in digital learning and social media usage in HEIs. The study employed quantitative research methods and a survey was developed and distributed to former university students. The purpose of the study was to formulate a checklist that will inform the factors that impact the use of digital learning in HEIs. At the conclusion of the study, the checklist was formulated and recommendations were made. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-12
Fixed point theory in metric and normed Spaces
- Authors: Naude, Luan
- Date: 2022-12
- Subjects: Metric spaces – South Africa , Banach spaces – South Africa , Mappings (Mathematics)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59898 , vital:62686
- Description: In this dissertation, we present major results in the theory of fixed points in metric and normed spaces. We start with a review of the Banach fixed point theorem and some of its applications (in systems of linear equations, differential equations, integral equations, and dynamical systems), and then discuss many of its extensions and generalizations. We look at the theorem of Edelstein ([8, Remark 3.1]) in compact metric spaces, and a generalizaton of it proved by Suzuki ([19, Theorem 3]) in 2009. We then give a detailed account of the work of Meyers: In [11], Meyers proved generalizations of the Banach fixed point theorem to uniform local contractions, and, in [10], a converse to the Banach fixed point theorem. Finally, we look at some of Browder’s work in fixed point theory. In [6], he showed the existence of fixed points for nonexpansive mappings on bounded, closed, and convex sets in uniformly convex Banach spaces, and, in [5], he proved similar results in Hilbert spaces using a connection between nonexpansive mappings and monotone operators. Keywords: Fixed point, Functional analysis, Metric spaces, Banach spaces, Hilbert spaces, contractions, Banach fixed point theorem, nonexpansive mappings. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Naude, Luan
- Date: 2022-12
- Subjects: Metric spaces – South Africa , Banach spaces – South Africa , Mappings (Mathematics)
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59898 , vital:62686
- Description: In this dissertation, we present major results in the theory of fixed points in metric and normed spaces. We start with a review of the Banach fixed point theorem and some of its applications (in systems of linear equations, differential equations, integral equations, and dynamical systems), and then discuss many of its extensions and generalizations. We look at the theorem of Edelstein ([8, Remark 3.1]) in compact metric spaces, and a generalizaton of it proved by Suzuki ([19, Theorem 3]) in 2009. We then give a detailed account of the work of Meyers: In [11], Meyers proved generalizations of the Banach fixed point theorem to uniform local contractions, and, in [10], a converse to the Banach fixed point theorem. Finally, we look at some of Browder’s work in fixed point theory. In [6], he showed the existence of fixed points for nonexpansive mappings on bounded, closed, and convex sets in uniformly convex Banach spaces, and, in [5], he proved similar results in Hilbert spaces using a connection between nonexpansive mappings and monotone operators. Keywords: Fixed point, Functional analysis, Metric spaces, Banach spaces, Hilbert spaces, contractions, Banach fixed point theorem, nonexpansive mappings. , Thesis (MSc) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2022
- Full Text:
- Date Issued: 2022-12
Grain size analysis, coastal hydrodynamics and erosion protection: a case study from Knysna and Plettenberg Bay, South Africa
- Authors: Pezisa, Ayabulela Raymond
- Date: 2022-12
- Subjects: Grain -- Analysis , Hydrodynamics , Shore protection
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27698 , vital:69394
- Description: The modern beach sands and Cretaceous Knysna Formation distributed along the coast of Plettenberg Bay and Knysna coast in the Western Cape Province of South Africa, have been examined and studied in the field outcrops and laborataries via grain-size analysis, XRD, SEM, EDX and microcope petrography analyses. This study looked into the coastal hydrodynamics and environment protection. The project aims to investigate the sediment distribution, grain-size variation, sedimentary structures, coast erosion and mitigation in the Plettenberg and Knysna coast to address environmental issues in the south coast of South Africa. The research will provide new insight onto coastal sedimentation, hydrodynamic condition, coastline erosion and the safety of the coastal environment and human property. The study will promote government attention on the sea level change, which caused flooding and environmental disaster along the south coastal area of South Africa. The rock sequence in the inland side of the study areas belongs to Cretaceous Knysna Formation, which comprises seven upward fining sequences. The stratigraphic sequence is underlain by the Table Mountain quartzite of the Cape Supergroup, and is overlain by Tertiary sediments and modern coastal dune sands. The Knysna Formation at the research area consists of massive conglomerate, sandstone and minor mudstone of mainly fluvial dominated sediments. The grain size analysis reveals that the modern fluvial channels at Plettenberg Bay and Knysna areas are of dominant coarse sands with minor silt and mud, which defines the sediments were deposited by moderate to high energy currents. Whilst the beach zones in Plettenberg Bay are predominated by fine to medium-grained marine sands. Grain-size analyses of beach sands show well-sorted, fine to coarse skewed in grain size distribution, indicating a relative lower to medium uniform energy condition during transportation and deposition. The bivariate plots of grain-size distribution demonstrate of the shallow agitated marine environment with the influence of tide and aeolian processes. Hydrodynamic condition in the beach area was more persistant and less variation compared to the river environment. The mineralogy and petrology studies revealed that in Plettenberg Bay and Knysna sediments are predominantly consisted of minerals quartz, feldspar, calcite, muscovite, aragonite, clay minerals, and salts (halite). Skeletal carbonate minerals (shell and coral fragments) are more than chemical precipitated carbonate minerals. The microtextures detected on the surface of the fluvial and marine sand grais involve V-shaped pits, upturn pits, dissolution pits and secondary mineral precipitation that were created by chemical and mechanical processes formed via sea-water dissolution, corrosion, and transport crashing. Whereas the boring holes and burrows created by activity of microorganisms boing into the surface of the grains. These microtextures of the river and beach sands exhibit a shallow marine and fluvial environments with medium to high energy conditions and active organic activities. Several sedimentary structures were detected in the coastal environments, including various types of ripple marks and dunes, burst bubble-hole, swash line, rill marks, rhomboid marks, burrows, boring and bioturbation, planar lamination and gravel pavement. In addition, sedimentary structures were also identified in the Cretaceous Knysna Formation such as air/water escape hole, convolute bedding, lenticular bedding, tabular cross-bedding and load cast. The sedimetnary structures closely linked with hydrodynamic conditions and therefore can be used as indicators for depositional environments. Flooding and erosion had become a coastal disaster that results in sediment redistribution throughout the coastal system and therefore caused landscape reform like coastal cliffs and sharpened dunes in erosive areas. Particularly, coastal hazards become more and more serious in recent years due to climate and sea leavel changes. Thus, to recognise coastal erosion and disaster and make a management strategy is of significant importance to compete against coastline retreat and to protect infrastructure and human safety in the coast area. The author had proposed a number of mitigation methods for environmental protection and for combating coastal erosion, including breakwaters, groins, jetties, vertical walls, rock armour, vegetation, boundary hardening, and revetment etc, which are the effective ways for protection of coast retreat, property damage and human safety. , Thesis (MSci) -- Faculty of Science and Agriculture, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Pezisa, Ayabulela Raymond
- Date: 2022-12
- Subjects: Grain -- Analysis , Hydrodynamics , Shore protection
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27698 , vital:69394
- Description: The modern beach sands and Cretaceous Knysna Formation distributed along the coast of Plettenberg Bay and Knysna coast in the Western Cape Province of South Africa, have been examined and studied in the field outcrops and laborataries via grain-size analysis, XRD, SEM, EDX and microcope petrography analyses. This study looked into the coastal hydrodynamics and environment protection. The project aims to investigate the sediment distribution, grain-size variation, sedimentary structures, coast erosion and mitigation in the Plettenberg and Knysna coast to address environmental issues in the south coast of South Africa. The research will provide new insight onto coastal sedimentation, hydrodynamic condition, coastline erosion and the safety of the coastal environment and human property. The study will promote government attention on the sea level change, which caused flooding and environmental disaster along the south coastal area of South Africa. The rock sequence in the inland side of the study areas belongs to Cretaceous Knysna Formation, which comprises seven upward fining sequences. The stratigraphic sequence is underlain by the Table Mountain quartzite of the Cape Supergroup, and is overlain by Tertiary sediments and modern coastal dune sands. The Knysna Formation at the research area consists of massive conglomerate, sandstone and minor mudstone of mainly fluvial dominated sediments. The grain size analysis reveals that the modern fluvial channels at Plettenberg Bay and Knysna areas are of dominant coarse sands with minor silt and mud, which defines the sediments were deposited by moderate to high energy currents. Whilst the beach zones in Plettenberg Bay are predominated by fine to medium-grained marine sands. Grain-size analyses of beach sands show well-sorted, fine to coarse skewed in grain size distribution, indicating a relative lower to medium uniform energy condition during transportation and deposition. The bivariate plots of grain-size distribution demonstrate of the shallow agitated marine environment with the influence of tide and aeolian processes. Hydrodynamic condition in the beach area was more persistant and less variation compared to the river environment. The mineralogy and petrology studies revealed that in Plettenberg Bay and Knysna sediments are predominantly consisted of minerals quartz, feldspar, calcite, muscovite, aragonite, clay minerals, and salts (halite). Skeletal carbonate minerals (shell and coral fragments) are more than chemical precipitated carbonate minerals. The microtextures detected on the surface of the fluvial and marine sand grais involve V-shaped pits, upturn pits, dissolution pits and secondary mineral precipitation that were created by chemical and mechanical processes formed via sea-water dissolution, corrosion, and transport crashing. Whereas the boring holes and burrows created by activity of microorganisms boing into the surface of the grains. These microtextures of the river and beach sands exhibit a shallow marine and fluvial environments with medium to high energy conditions and active organic activities. Several sedimentary structures were detected in the coastal environments, including various types of ripple marks and dunes, burst bubble-hole, swash line, rill marks, rhomboid marks, burrows, boring and bioturbation, planar lamination and gravel pavement. In addition, sedimentary structures were also identified in the Cretaceous Knysna Formation such as air/water escape hole, convolute bedding, lenticular bedding, tabular cross-bedding and load cast. The sedimetnary structures closely linked with hydrodynamic conditions and therefore can be used as indicators for depositional environments. Flooding and erosion had become a coastal disaster that results in sediment redistribution throughout the coastal system and therefore caused landscape reform like coastal cliffs and sharpened dunes in erosive areas. Particularly, coastal hazards become more and more serious in recent years due to climate and sea leavel changes. Thus, to recognise coastal erosion and disaster and make a management strategy is of significant importance to compete against coastline retreat and to protect infrastructure and human safety in the coast area. The author had proposed a number of mitigation methods for environmental protection and for combating coastal erosion, including breakwaters, groins, jetties, vertical walls, rock armour, vegetation, boundary hardening, and revetment etc, which are the effective ways for protection of coast retreat, property damage and human safety. , Thesis (MSci) -- Faculty of Science and Agriculture, 2022
- Full Text:
- Date Issued: 2022-12
Growth performance of three F1 Hybrid tomato (Solanum lycopersicum L.) Cultivars grown in Peat moss and Sawdust
- Authors: Mondile, Landile
- Date: 2022-12
- Subjects: Agricultural development projects -- South Africa -- Eastern Cape , Tomatoes – Irrigation – Management
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59853 , vital:62450
- Description: The tomato is one of the most important and commonly grown vegetable crops cultivated by subsistence as well as commercial farmers in South Africa. Even though hydroponic tomato production has gained popularity, tomato production in South Africa is mostly practised open field. This is because most South African households in rural communities depend on agriculture for their livelihoods. Tomatoes are one of the “cash crops” − meaning cash in hand for many farmers. As a staple food for many rural communities and households, tomatoes are prepared as relish daily. Including tomatoes in the human diet provides the benefit of various important nutrients, such as Vitamin C, amongst others. The main aim of this study was to evaluate the growth performance − by assessing the number of leaves, stem diameter, plant height and number of flowers per plant − in three Solanum lycopersicum L. cultivars, namely: F1 hybrids Star9006, TF4009 and TF4011, grown in peat moss and sawdust respectively. In addition, the research aimed at investigating how peat moss and sawdust, as growing media, influenced the growth performance of the tomato cultivars under study. The study was conducted at the Döhne Agricultural Development Institute near Stutterheim in the Eastern Cape. The experiment was laid out in a split randomized complete block design (RCBD) in which the growing media, namely: sawdust and peat moss, were assigned as main plots and the tomato cultivars to sub-plots, with three replicates. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Mondile, Landile
- Date: 2022-12
- Subjects: Agricultural development projects -- South Africa -- Eastern Cape , Tomatoes – Irrigation – Management
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59853 , vital:62450
- Description: The tomato is one of the most important and commonly grown vegetable crops cultivated by subsistence as well as commercial farmers in South Africa. Even though hydroponic tomato production has gained popularity, tomato production in South Africa is mostly practised open field. This is because most South African households in rural communities depend on agriculture for their livelihoods. Tomatoes are one of the “cash crops” − meaning cash in hand for many farmers. As a staple food for many rural communities and households, tomatoes are prepared as relish daily. Including tomatoes in the human diet provides the benefit of various important nutrients, such as Vitamin C, amongst others. The main aim of this study was to evaluate the growth performance − by assessing the number of leaves, stem diameter, plant height and number of flowers per plant − in three Solanum lycopersicum L. cultivars, namely: F1 hybrids Star9006, TF4009 and TF4011, grown in peat moss and sawdust respectively. In addition, the research aimed at investigating how peat moss and sawdust, as growing media, influenced the growth performance of the tomato cultivars under study. The study was conducted at the Döhne Agricultural Development Institute near Stutterheim in the Eastern Cape. The experiment was laid out in a split randomized complete block design (RCBD) in which the growing media, namely: sawdust and peat moss, were assigned as main plots and the tomato cultivars to sub-plots, with three replicates. , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-12
Habitat use by Juvenile coastal fish in subtidal vegetated habitats of Algoa Bay;s shallow water seascape
- Authors: Mkhize,Thembani
- Date: 2022-12
- Subjects: Sailing ships -- South Africa -- Algoa Bay --History , Marine fishes -- Algoa Bay -- South Africa , Fish improvement habitat
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59788 , vital:62429
- Description: Structurally complex habitats such as seagrass, mangroves, and seaweed are important as nurseries in estuaries and nearshore marine environments. While numerous studies have focussed on structurally complex vegetated habitats in estuaries, few studies have focussed on vegetated nursery habitats (particularly seaweed) in coastal areas and their importance. The main aim of this project is to examine the nature of shallow water vegetated habitat (Zostera capensis seagrass and Plocamium corallorhiza macroalga) usage by juvenile fish in the Algoa Bay shallow water seascape (Swartkops Estuary and Flat Rocks nearshore subtidal reef). This aim was achieved by quantifying and comparing complexity of these two habitat-forming species, and the fish assemblages (relative abundance, richness, size structure and behaviour) across the two habitats. To measure and compare complexity of Z. capensis and P. corallorhiza, canopy height, density and leaf/blade width were sampled. In addition to these structural complexity indices, Fractal D (dimensionless complexity indices) was also quantified using Image software. Zostera capensis (1553.3 Indiv/m2 ) had a slightly higher mean density compared to P. corallorhiza (1303.7 Indiv/m2 ) but the difference was not significant. When sites (within each habitat) were compared, density did not show any significant differences between sites. Canopy height of Z. capensis (56.9 cm) was significantly higher compared to P. corallorhiza (16.6 cm), with no significant differences between sites. On the other hand, P. corallorhiza (0.9 cm) blades were significantly wider than Z. capensis (0.2 cm) leaves. Fractal D values followed the same trend as leaf/blade width with, with P. corallorhiza (1.8) having significantly higher Fractal D values than Z. capensis (1.5). The last two indices also had a positive relationship as Fractal D increased with increasing leaf/blade width. These results show that overall P. corallorhiza is more structurally complex than Z. capensis. Calibrated mini stereo underwater remote video systems (mini stereo-RUVs) were optimised in these two studied habitats to ensure they were suitable to measure and identify juvenile fishes. A pilot optimization study found that a minimum of five deployments and a minimum of 45 minutes filming duration is required to study fish assemblages in these two habitats. For comparison of fish assemblages and assessment of habitat use by fish, mini stereo-RUVs were deployed in both habitats (three sites per habitat) and were left to record for 60 minutes for a v total of five sampling occasions in seagrass and seven sampling occasions in macroalga between 7 September 2020 and 9 April 2021. Collected videos were analysed, with relative abundance (MaxN), richness and fish length extracted. Fish behaviour was also analysed and compared between habitats. Mean fish MaxN was slightly higher in Z. capensis (3.4) than in P. corallorhiza (2.9), although this result was not significant. Species diversity was significantly higher in P. corallorhiza as shown by both richness (Z. capensis = 11 and P. corallorhiza = 18) and the Shannon diversity index (Z. capensis = 1.3 and P. corallorhiza = 1.7). Both habitats were dominated by species from the family Sparidae, with six estuary-associated marine species common between the two habitats. Both Z. capensis and P. corallorhiza were dominated by juvenile fish, with more than 70 % of measured fish being juveniles. Fish length was not significantly different in the two habitats. Juvenile fish assemblages were significantly distinct between the two habitats (ANOSIM). In terms of habitat use, fish behaviour analysis showed that fish use both habitats as nurseries. There was no significant difference in fish behaviour in the two habitats and fish behaviours associated with higher levels of habitat use (slow meandering and feeding) were the most common behaviours in both habitats. Although not significant, feeding behaviour (also associated with a high degree of habitat use) was observed more in macroalga than in the seagrass habitat. Although none of the studied complexity indices could be related to abundance, both leaf/blade width and Fractal Dimension showed a positive relationship with the number of species recorded, while canopy height showed a strong negative relationship with the number of species. Overall, this study shows that Plocamium corallorhiza red macroalga in the shallow marine environment may be as important in shallow marine environments as Zostera capensis seagrass in estuaries as nursery habitats for marine fi , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Mkhize,Thembani
- Date: 2022-12
- Subjects: Sailing ships -- South Africa -- Algoa Bay --History , Marine fishes -- Algoa Bay -- South Africa , Fish improvement habitat
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59788 , vital:62429
- Description: Structurally complex habitats such as seagrass, mangroves, and seaweed are important as nurseries in estuaries and nearshore marine environments. While numerous studies have focussed on structurally complex vegetated habitats in estuaries, few studies have focussed on vegetated nursery habitats (particularly seaweed) in coastal areas and their importance. The main aim of this project is to examine the nature of shallow water vegetated habitat (Zostera capensis seagrass and Plocamium corallorhiza macroalga) usage by juvenile fish in the Algoa Bay shallow water seascape (Swartkops Estuary and Flat Rocks nearshore subtidal reef). This aim was achieved by quantifying and comparing complexity of these two habitat-forming species, and the fish assemblages (relative abundance, richness, size structure and behaviour) across the two habitats. To measure and compare complexity of Z. capensis and P. corallorhiza, canopy height, density and leaf/blade width were sampled. In addition to these structural complexity indices, Fractal D (dimensionless complexity indices) was also quantified using Image software. Zostera capensis (1553.3 Indiv/m2 ) had a slightly higher mean density compared to P. corallorhiza (1303.7 Indiv/m2 ) but the difference was not significant. When sites (within each habitat) were compared, density did not show any significant differences between sites. Canopy height of Z. capensis (56.9 cm) was significantly higher compared to P. corallorhiza (16.6 cm), with no significant differences between sites. On the other hand, P. corallorhiza (0.9 cm) blades were significantly wider than Z. capensis (0.2 cm) leaves. Fractal D values followed the same trend as leaf/blade width with, with P. corallorhiza (1.8) having significantly higher Fractal D values than Z. capensis (1.5). The last two indices also had a positive relationship as Fractal D increased with increasing leaf/blade width. These results show that overall P. corallorhiza is more structurally complex than Z. capensis. Calibrated mini stereo underwater remote video systems (mini stereo-RUVs) were optimised in these two studied habitats to ensure they were suitable to measure and identify juvenile fishes. A pilot optimization study found that a minimum of five deployments and a minimum of 45 minutes filming duration is required to study fish assemblages in these two habitats. For comparison of fish assemblages and assessment of habitat use by fish, mini stereo-RUVs were deployed in both habitats (three sites per habitat) and were left to record for 60 minutes for a v total of five sampling occasions in seagrass and seven sampling occasions in macroalga between 7 September 2020 and 9 April 2021. Collected videos were analysed, with relative abundance (MaxN), richness and fish length extracted. Fish behaviour was also analysed and compared between habitats. Mean fish MaxN was slightly higher in Z. capensis (3.4) than in P. corallorhiza (2.9), although this result was not significant. Species diversity was significantly higher in P. corallorhiza as shown by both richness (Z. capensis = 11 and P. corallorhiza = 18) and the Shannon diversity index (Z. capensis = 1.3 and P. corallorhiza = 1.7). Both habitats were dominated by species from the family Sparidae, with six estuary-associated marine species common between the two habitats. Both Z. capensis and P. corallorhiza were dominated by juvenile fish, with more than 70 % of measured fish being juveniles. Fish length was not significantly different in the two habitats. Juvenile fish assemblages were significantly distinct between the two habitats (ANOSIM). In terms of habitat use, fish behaviour analysis showed that fish use both habitats as nurseries. There was no significant difference in fish behaviour in the two habitats and fish behaviours associated with higher levels of habitat use (slow meandering and feeding) were the most common behaviours in both habitats. Although not significant, feeding behaviour (also associated with a high degree of habitat use) was observed more in macroalga than in the seagrass habitat. Although none of the studied complexity indices could be related to abundance, both leaf/blade width and Fractal Dimension showed a positive relationship with the number of species recorded, while canopy height showed a strong negative relationship with the number of species. Overall, this study shows that Plocamium corallorhiza red macroalga in the shallow marine environment may be as important in shallow marine environments as Zostera capensis seagrass in estuaries as nursery habitats for marine fi , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-12
Hooked on Gqom: an ethnographic study of a contemporary urban youth musical identity in South Africa
- Katushabe,Bathandwa Mathias Ngasiirwe
- Authors: Katushabe,Bathandwa Mathias Ngasiirwe
- Date: 2022-12
- Subjects: Electric dance Music -- South Africa -- Durban , Kwaito Music -- Social Ascpects -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59326 , vital:62045
- Description: Gqom music has grown from being a relatively obscure sub-genre of South African Kwaito into a globally recognised sonic identity and social movement. Gqom, as a distinct music style, has featured heavily in mass media since 2015, spawning social phenomena such as viral dance challenges on various social media platforms, and constituting a launch pad for the careers of musicians such as DJ Lag and the Distruction Boyz. Gqom also featured in the international motion picture Black Panther in 2018, and in the 2019 Lion King: The Gift album by American pop icon Beyoncé. Although the origins of Gqom, its characteristics, impact, and ascension to noteworthiness have received attention in the form of newspaper articles, online blogs, YouTube documentaries, etc, and small treatises or academic articles, little literature has been generated about the music and its theoretical construction as sonic and social phenomena. I argue that by using the theoretical scaffolds of ‘identity politics’, specifically ‘identities in music’, one is better able to understand Gqom as reflective of a broader social urban youth identity characterised by partying and political disillusionment. In other words, I make the case for an intergroup identification that prioritises in-group musical identities associated with Gqom and its phenomenology of practices which I have excavated using an ethnographic qualitative method. , Thesis (MMus) -- Faculty of Humanities, School of Visual and performing Arts, 2022
- Full Text:
- Date Issued: 2022-12
Hooked on Gqom: an ethnographic study of a contemporary urban youth musical identity in South Africa
- Authors: Katushabe,Bathandwa Mathias Ngasiirwe
- Date: 2022-12
- Subjects: Electric dance Music -- South Africa -- Durban , Kwaito Music -- Social Ascpects -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59326 , vital:62045
- Description: Gqom music has grown from being a relatively obscure sub-genre of South African Kwaito into a globally recognised sonic identity and social movement. Gqom, as a distinct music style, has featured heavily in mass media since 2015, spawning social phenomena such as viral dance challenges on various social media platforms, and constituting a launch pad for the careers of musicians such as DJ Lag and the Distruction Boyz. Gqom also featured in the international motion picture Black Panther in 2018, and in the 2019 Lion King: The Gift album by American pop icon Beyoncé. Although the origins of Gqom, its characteristics, impact, and ascension to noteworthiness have received attention in the form of newspaper articles, online blogs, YouTube documentaries, etc, and small treatises or academic articles, little literature has been generated about the music and its theoretical construction as sonic and social phenomena. I argue that by using the theoretical scaffolds of ‘identity politics’, specifically ‘identities in music’, one is better able to understand Gqom as reflective of a broader social urban youth identity characterised by partying and political disillusionment. In other words, I make the case for an intergroup identification that prioritises in-group musical identities associated with Gqom and its phenomenology of practices which I have excavated using an ethnographic qualitative method. , Thesis (MMus) -- Faculty of Humanities, School of Visual and performing Arts, 2022
- Full Text:
- Date Issued: 2022-12
Implementation framework for microgrids as an energy solution to uplift rural communities in the Eastern Cape
- Authors: Sibulelokuhle Xulaba
- Date: 2022-12
- Subjects: Renewable energy sources -- Eastern Cape , Microgrids (Smart power grids) -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60071 , vital:62916
- Description: People in remote areas of most developing countries still face economic and environmental challenges despite our more accessible world of technology. Access to reliable and sustainable electricity is the most challenging developmental issue faced by rural communities in South Africa, as grid expansion has dwindled due to business challenges experiences by the state power producer, Eskom. Unless businesses and homeowners in unconnected areas use generators, which are costly to run and environmentally unfriendly, most will continue to remain without electricity for the foreseeable future. The purpose of this study therefore is to provide a model for the successful implementation of renewable energy microgrids to overcome poverty and promote economic development in rural areas of the Eastern Cape. The data for the study was collected from three district municipalities in the rural areas of the Eastern Cape. The province is divided into homeland and farms, with the farms that were sampled for the study situated on State-owned land. The sample group comprised small businesses operating in these rural areas. The study used a mixed-method research design, the methodology being found to be the most suitable for the study. The study uses a questionnaire-variant convergent design that consisted of a mixture of open-ended and close-ended questions. The sample group was situated in areas with limited electricity or internet access, therefore face-toface structured interviews were conducted. Meta-inference was used for data interpretation, and a combination of quantitative and qualitative data analysis methods was used to analyse the data. For the open-ended questions, thematic analysis was used, whilst descriptive statistics were used for the closed-ended questions. The study found that most businesses operating in rural areas do not have access to electricity. Those businesses which do not have electricity must make use of diesel-powered generators to continue to trade, which makes their businesses unprofitable. They spend a large proportion of their earnings purchasing fuel to achieve the desire thermal comfort for their stock, or to pump water via boreholes or piped dam structures. The study showed that implementing a renewable energy microgrids provides a viable option, supporting the literature reviewed. This will promote economic development in these areas of the Eastern Cape. Developing and enhancing the standard of living can assist in reducing the number of people migrating to urban areas whilst providing an opportunity to increase farm yields, grow rural business and change the lives of the poor for the better. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Sibulelokuhle Xulaba
- Date: 2022-12
- Subjects: Renewable energy sources -- Eastern Cape , Microgrids (Smart power grids) -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60071 , vital:62916
- Description: People in remote areas of most developing countries still face economic and environmental challenges despite our more accessible world of technology. Access to reliable and sustainable electricity is the most challenging developmental issue faced by rural communities in South Africa, as grid expansion has dwindled due to business challenges experiences by the state power producer, Eskom. Unless businesses and homeowners in unconnected areas use generators, which are costly to run and environmentally unfriendly, most will continue to remain without electricity for the foreseeable future. The purpose of this study therefore is to provide a model for the successful implementation of renewable energy microgrids to overcome poverty and promote economic development in rural areas of the Eastern Cape. The data for the study was collected from three district municipalities in the rural areas of the Eastern Cape. The province is divided into homeland and farms, with the farms that were sampled for the study situated on State-owned land. The sample group comprised small businesses operating in these rural areas. The study used a mixed-method research design, the methodology being found to be the most suitable for the study. The study uses a questionnaire-variant convergent design that consisted of a mixture of open-ended and close-ended questions. The sample group was situated in areas with limited electricity or internet access, therefore face-toface structured interviews were conducted. Meta-inference was used for data interpretation, and a combination of quantitative and qualitative data analysis methods was used to analyse the data. For the open-ended questions, thematic analysis was used, whilst descriptive statistics were used for the closed-ended questions. The study found that most businesses operating in rural areas do not have access to electricity. Those businesses which do not have electricity must make use of diesel-powered generators to continue to trade, which makes their businesses unprofitable. They spend a large proportion of their earnings purchasing fuel to achieve the desire thermal comfort for their stock, or to pump water via boreholes or piped dam structures. The study showed that implementing a renewable energy microgrids provides a viable option, supporting the literature reviewed. This will promote economic development in these areas of the Eastern Cape. Developing and enhancing the standard of living can assist in reducing the number of people migrating to urban areas whilst providing an opportunity to increase farm yields, grow rural business and change the lives of the poor for the better. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-12
Improving governance and service delivery in Nelson Mandela Metropolitan Municipality: a quest for a clean audit opinion
- Ntsundwana, Kanyisa Zime Dadewabobonke
- Authors: Ntsundwana, Kanyisa Zime Dadewabobonke
- Date: 2022-12
- Subjects: Service delivery -- Nelson Mandela Metropolitan Municipality -- Port Elizabeth , Municipal finance--Auditing--Law and legislation
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59644 , vital:62297
- Description: The purpose of the study was to investigate how Nelson Mandela Bay Metropolitan Municipality (NMBMM) can improve its governance and service delivery to obtain a clean audit outcome. In addition, the study explored the role of auditing in the functioning and performance of municipalities. NMBMM public officials and political office-bearers are expected in terms of Chapter 7 of the Constitution of South Africa Act 108 of 1996 to promote the general welfare of the community by meeting its needs, expectations and demands. The qualitative (non-empirical) research methodology followed in the study was based on a desktop approach. The annual documents reviewed to answer the research objectives were the Consolidated General Reports on the Local Government Audit Outcome and the Reports of the Auditor-General to the Eastern Cape Provincial Legislature and the council on the NMBMM and its municipal entity for the financial period 2015/2016 to 2019/2020. The problem was that the NMBMM did not obtain a clean audit opinion during this period. The study findings indicated that the main contributing factors that prevented the NMBMM from improving governance, service delivery and obtaining a clean audit outcome were as follows: poor management of accounting practices (financial management); inadequate financial statements and performance reports; a lack of adherence to predetermined objectives and legislation; and unauthorised, fruitless, wasteful and irregular expenditure. To attain a clean audit outcome, NMBMM municipal officials and political officebearers need to perform their mandated duties diligently and overcome the challenges that have barred them from obtaining an unqualified audit opinion. Such an endeavour would be consistent with the Operation Clean Audit (OPCA) campaign, which was introduced by the former Minister of Cooperative Governance and Traditional Affairs, Sicelo Shiceka, in 2009. In other words, the NMBMM must improve its governance and service delivery because a municipality without good governance lacks accountability, which has a direct negative impact on the delivery of services to its communities. Hence, it is recommended inter alia that the NMBMM seeks advice from iii the Auditor-General on strategies to improve its audit outcomes, maintains infrastructure, addresses criminal activities and improves its internal controls. , Thesis (MSc) -- Faculty of Humanities, School of Governmental and Social sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Ntsundwana, Kanyisa Zime Dadewabobonke
- Date: 2022-12
- Subjects: Service delivery -- Nelson Mandela Metropolitan Municipality -- Port Elizabeth , Municipal finance--Auditing--Law and legislation
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59644 , vital:62297
- Description: The purpose of the study was to investigate how Nelson Mandela Bay Metropolitan Municipality (NMBMM) can improve its governance and service delivery to obtain a clean audit outcome. In addition, the study explored the role of auditing in the functioning and performance of municipalities. NMBMM public officials and political office-bearers are expected in terms of Chapter 7 of the Constitution of South Africa Act 108 of 1996 to promote the general welfare of the community by meeting its needs, expectations and demands. The qualitative (non-empirical) research methodology followed in the study was based on a desktop approach. The annual documents reviewed to answer the research objectives were the Consolidated General Reports on the Local Government Audit Outcome and the Reports of the Auditor-General to the Eastern Cape Provincial Legislature and the council on the NMBMM and its municipal entity for the financial period 2015/2016 to 2019/2020. The problem was that the NMBMM did not obtain a clean audit opinion during this period. The study findings indicated that the main contributing factors that prevented the NMBMM from improving governance, service delivery and obtaining a clean audit outcome were as follows: poor management of accounting practices (financial management); inadequate financial statements and performance reports; a lack of adherence to predetermined objectives and legislation; and unauthorised, fruitless, wasteful and irregular expenditure. To attain a clean audit outcome, NMBMM municipal officials and political officebearers need to perform their mandated duties diligently and overcome the challenges that have barred them from obtaining an unqualified audit opinion. Such an endeavour would be consistent with the Operation Clean Audit (OPCA) campaign, which was introduced by the former Minister of Cooperative Governance and Traditional Affairs, Sicelo Shiceka, in 2009. In other words, the NMBMM must improve its governance and service delivery because a municipality without good governance lacks accountability, which has a direct negative impact on the delivery of services to its communities. Hence, it is recommended inter alia that the NMBMM seeks advice from iii the Auditor-General on strategies to improve its audit outcomes, maintains infrastructure, addresses criminal activities and improves its internal controls. , Thesis (MSc) -- Faculty of Humanities, School of Governmental and Social sciences, 2022
- Full Text:
- Date Issued: 2022-12
In vitro evaluation of vernonia amygdalina gold nanoparticles to stimulate apoptosis in breast cancer lines
- Authors: Pali, Zenande
- Date: 2022-12
- Subjects: Breast--Cancer--Treatment--Technological innovations , Apoptosis -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59933 , vital:62696
- Description: Breast cancer is the most prevalent cancer in women and triple negative breast cancer (TNBC) is one of the most aggressive breast cancer subtypes. Current breast cancer therapies are associated with several side effects and less effective treatment. Therefore, the development of new approaches to improve cancer treatment are needed. The use of gold nanoparticles (AuNPs) for anti-cancer effects is one of the most promising research areas in the field of nanotechnology, because nanoparticles are readily functionalized and can passively accumulate at the tumor site without affecting healthy tissues. The green synthesis of AuNPs is an eco-friendly, costeffective, fast, and non-toxic method that is associated with fewer side effects.The aim of this study was to evaluate the cytotoxicity and apoptotic activity exhibted by Vernonia amygdalina gold nanoparticles (VA-AuNPs) in triple negative breast cancer cell lines. The aqueous extract of Vernonia amygdalina was used to reduce gold salts to form VA-AuNPs. The VA-AuNPs were synthesised at a temperature of 100 °C and pH 7. The synthesised green AuNPs were charactised using ultraviolet-visible spectroscopy, dynamic light scattering, and high resolution transmission electron microscopy. Spherical VA-AuNPs were succesfully synthesized with average size of 17.11 ± 2.82 nm and a zeta potential of -36.55 ± 1.15 mV. The MTT assay revealed that VA-AuNPs significantly reduced (p cell viability for both mouse (E0771) and human (MDA-MB231) TNBC cell lines in a dose-dependent manner. The PrestoBlue assay showed a consistent decrease in cell numbers over time, suggesting either a decrease in proliferation or increase in apoptosis. The apoptotic effects of VAAuNPs were assessed using the CaspGLOW Fluorescein active caspase-8 staining kit. It indicated that caspase 8 was activated when cells were treated with VA-AuNPs. E0771 and MDA-MB231 cells were compared when treated with VA-AuNP and a similar trend was established. The HRTEM image showed VA-AuNPs in an vesiclelike structure inside the cell. It can be concluded that the VA-AuNPs showed anticancer activities against TNBC cells. Caspase 8 is activated by VA-AuNPs, confirming the induction of apoptosis, but does not exclude the activation of the intrinsic apoptotic pathway or inhibition of proliferation activity. E0771 and MDA-MB231 cells showed similar cytotoxic activity and thus expected that the mechanism of action in these cell lines should also be similar. Future in vivo research, using the mouse model inoculated with E0771 TNBC cells, should be justified and comparable with human TNBC cells. , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Pali, Zenande
- Date: 2022-12
- Subjects: Breast--Cancer--Treatment--Technological innovations , Apoptosis -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59933 , vital:62696
- Description: Breast cancer is the most prevalent cancer in women and triple negative breast cancer (TNBC) is one of the most aggressive breast cancer subtypes. Current breast cancer therapies are associated with several side effects and less effective treatment. Therefore, the development of new approaches to improve cancer treatment are needed. The use of gold nanoparticles (AuNPs) for anti-cancer effects is one of the most promising research areas in the field of nanotechnology, because nanoparticles are readily functionalized and can passively accumulate at the tumor site without affecting healthy tissues. The green synthesis of AuNPs is an eco-friendly, costeffective, fast, and non-toxic method that is associated with fewer side effects.The aim of this study was to evaluate the cytotoxicity and apoptotic activity exhibted by Vernonia amygdalina gold nanoparticles (VA-AuNPs) in triple negative breast cancer cell lines. The aqueous extract of Vernonia amygdalina was used to reduce gold salts to form VA-AuNPs. The VA-AuNPs were synthesised at a temperature of 100 °C and pH 7. The synthesised green AuNPs were charactised using ultraviolet-visible spectroscopy, dynamic light scattering, and high resolution transmission electron microscopy. Spherical VA-AuNPs were succesfully synthesized with average size of 17.11 ± 2.82 nm and a zeta potential of -36.55 ± 1.15 mV. The MTT assay revealed that VA-AuNPs significantly reduced (p cell viability for both mouse (E0771) and human (MDA-MB231) TNBC cell lines in a dose-dependent manner. The PrestoBlue assay showed a consistent decrease in cell numbers over time, suggesting either a decrease in proliferation or increase in apoptosis. The apoptotic effects of VAAuNPs were assessed using the CaspGLOW Fluorescein active caspase-8 staining kit. It indicated that caspase 8 was activated when cells were treated with VA-AuNPs. E0771 and MDA-MB231 cells were compared when treated with VA-AuNP and a similar trend was established. The HRTEM image showed VA-AuNPs in an vesiclelike structure inside the cell. It can be concluded that the VA-AuNPs showed anticancer activities against TNBC cells. Caspase 8 is activated by VA-AuNPs, confirming the induction of apoptosis, but does not exclude the activation of the intrinsic apoptotic pathway or inhibition of proliferation activity. E0771 and MDA-MB231 cells showed similar cytotoxic activity and thus expected that the mechanism of action in these cell lines should also be similar. Future in vivo research, using the mouse model inoculated with E0771 TNBC cells, should be justified and comparable with human TNBC cells. , Thesis (MSc) -- Faculty of Science, School of Biomolecular and Chemical Sciences, 2022
- Full Text:
- Date Issued: 2022-12
Infant feeding practices of mothers with infants under six months of age in the Nelson Mandela Bay Community Health Centres within Sub-district C
- Authors: Moss, Caryn Ruth
- Date: 2022-12
- Subjects: Breastfeeding , Breastfeeding -- Complications
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60177 , vital:63212
- Description: Background: Infant feeding practices refers to the type of feeding methods that are used to provide nutrition to the infant. This includes breastfeeding, donor milk, formula milk, and complementary feeds. Globally, breastfeeding is the recommended infant feeding practice for infants under six months of age with the introduction of complementary feeds after six months of age (WHO, 2018a). The purpose of the study was to explore and describe the infant feeding practices of mothers with infants under six months of age in Nelson Mandela Bay. The researcher explored and described the different infant feeding practices of mothers with infants under six months of age. Method: A quantitative, descriptive study design was conducted and included 150 respondents, 18 years old and above, with infants under six months of age. Convenience sampling was used, and the respondents were from five Nelson Mandela Bay Community Health Centres (CHCs) in Sub-district C. Data were collected using a fieldworker employing a mask-to-mask approach to adhere to COVID-19 principles and a questionnaire with open-ended and closed-ended questions. Data were analysed using the statistical package for the social sciences (SPSS®) software with the use of descriptive statistical analysis. Results: The results revealed that 63% (n=94) of the respondents had breastfed their infant while 37% (n=56) had never breastfed their infant. Most of the respondents, 85% (n=128) recorded that they received advice after birth. Of the respondents, 37% (n=56), gave their infant formula milk instead of breastfeeding. In addition, 33% (n=29) of the infants were given soft foods at two months old as well as 32% (n=32.3) were given liquids at the same age. Conclusion: The study findings revealed that most mothers with infants under six months of age in the Nelson Mandela Bay CHCs Sub-district C introduced complementary feeds before their infants turned six months old. The results also revealed that respondents introduced complementary feeds because the infant was still hungry. Family members, friends, and healthcare practitioners play an important role when a mother chooses a feeding practice for her infant. Recommendations are made to mothers to provide age-appropriate feeding practices. Furthermore, viii recommendations are made to nurse educators to include training regarding up-to-date infant feeding practices to undergraduate nursing students. Lastly, it is recommended that research comparing infant feeding practices in the three Sub-districts in Nelson Mandela Bay be conducted. , Thesis (MA) -- Faculty of Health Sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Moss, Caryn Ruth
- Date: 2022-12
- Subjects: Breastfeeding , Breastfeeding -- Complications
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60177 , vital:63212
- Description: Background: Infant feeding practices refers to the type of feeding methods that are used to provide nutrition to the infant. This includes breastfeeding, donor milk, formula milk, and complementary feeds. Globally, breastfeeding is the recommended infant feeding practice for infants under six months of age with the introduction of complementary feeds after six months of age (WHO, 2018a). The purpose of the study was to explore and describe the infant feeding practices of mothers with infants under six months of age in Nelson Mandela Bay. The researcher explored and described the different infant feeding practices of mothers with infants under six months of age. Method: A quantitative, descriptive study design was conducted and included 150 respondents, 18 years old and above, with infants under six months of age. Convenience sampling was used, and the respondents were from five Nelson Mandela Bay Community Health Centres (CHCs) in Sub-district C. Data were collected using a fieldworker employing a mask-to-mask approach to adhere to COVID-19 principles and a questionnaire with open-ended and closed-ended questions. Data were analysed using the statistical package for the social sciences (SPSS®) software with the use of descriptive statistical analysis. Results: The results revealed that 63% (n=94) of the respondents had breastfed their infant while 37% (n=56) had never breastfed their infant. Most of the respondents, 85% (n=128) recorded that they received advice after birth. Of the respondents, 37% (n=56), gave their infant formula milk instead of breastfeeding. In addition, 33% (n=29) of the infants were given soft foods at two months old as well as 32% (n=32.3) were given liquids at the same age. Conclusion: The study findings revealed that most mothers with infants under six months of age in the Nelson Mandela Bay CHCs Sub-district C introduced complementary feeds before their infants turned six months old. The results also revealed that respondents introduced complementary feeds because the infant was still hungry. Family members, friends, and healthcare practitioners play an important role when a mother chooses a feeding practice for her infant. Recommendations are made to mothers to provide age-appropriate feeding practices. Furthermore, viii recommendations are made to nurse educators to include training regarding up-to-date infant feeding practices to undergraduate nursing students. Lastly, it is recommended that research comparing infant feeding practices in the three Sub-districts in Nelson Mandela Bay be conducted. , Thesis (MA) -- Faculty of Health Sciences, 2022
- Full Text:
- Date Issued: 2022-12
Infrastructure development: A framework for successful delivery of tower masts
- Authors: Wana, Sivuyise Viwe
- Date: 2022-12
- Subjects: telecommunication , Mobile network
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60060 , vital:62870
- Description: In the South African context, the demand for network connectivity as a basic human right has increased (BusinessTech, 2022). In urban areas with functioning telecommunication network coverage the demand has heightened while there is also significant growth in the demand for network connectivity in remote and rural areas such as villages, small towns, as well as peri-urban areas. The rising demand for network coverage as well as the initiative to recognise network coverage as a basic human right prompted the South African government to put a plan in place for the supply of free internet data to low-income households (BusinessTech, 2022). The main aim of the study was to investigate the need for the construction, upgrade, and installation of telecommunications tower mast infrastructure in areas of the Eastern Cape that have a great need for the services. This was achieved by analysing the various requirements and challenges that technical teams are faced with within the telecommunications sector, and in doing so, the study aimed to understand the ways in which the infrastructure gap among different socio-economic groups in the country may be closed. The findings of the study suggest that, although there is a demand for construction of new tower mast infrastructure, there is a greater need for improving the existing infrastructure. It is recommended that this may be done through initiatives aimed at protecting the existing infrastructure against vandals, ensuring rural communities are assisted in the use of funds obtained from the leasing of land, there are more stringent consequence management processes in place for individuals who mismanage resources obtained from tower mast infrastructure, and that infrastructure sharing and the upgrade of existing infrastructure is the best alternative in increasing network coverage for rural areas. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Wana, Sivuyise Viwe
- Date: 2022-12
- Subjects: telecommunication , Mobile network
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60060 , vital:62870
- Description: In the South African context, the demand for network connectivity as a basic human right has increased (BusinessTech, 2022). In urban areas with functioning telecommunication network coverage the demand has heightened while there is also significant growth in the demand for network connectivity in remote and rural areas such as villages, small towns, as well as peri-urban areas. The rising demand for network coverage as well as the initiative to recognise network coverage as a basic human right prompted the South African government to put a plan in place for the supply of free internet data to low-income households (BusinessTech, 2022). The main aim of the study was to investigate the need for the construction, upgrade, and installation of telecommunications tower mast infrastructure in areas of the Eastern Cape that have a great need for the services. This was achieved by analysing the various requirements and challenges that technical teams are faced with within the telecommunications sector, and in doing so, the study aimed to understand the ways in which the infrastructure gap among different socio-economic groups in the country may be closed. The findings of the study suggest that, although there is a demand for construction of new tower mast infrastructure, there is a greater need for improving the existing infrastructure. It is recommended that this may be done through initiatives aimed at protecting the existing infrastructure against vandals, ensuring rural communities are assisted in the use of funds obtained from the leasing of land, there are more stringent consequence management processes in place for individuals who mismanage resources obtained from tower mast infrastructure, and that infrastructure sharing and the upgrade of existing infrastructure is the best alternative in increasing network coverage for rural areas. , Thesis (MA) -- Faculty of Engineering, the Built Environment, and Technology, 2022
- Full Text:
- Date Issued: 2022-12
Inventory management decisions for effective inventory management in the South African automotive component manufacturing industry: pre-and since COVID-19
- Authors: Delport, Jason
- Date: 2022-12
- Subjects: Inventory management , Automobile industry and trade
- Language: English
- Type: Master's theses , Theses
- Identifier: http://hdl.handle.net/10948/59511 , vital:62145
- Description: Globalisation has enabled the automotive industry to source various automotive products worldwide. It assisted in increasing the economic growth of countries as it allowed the flow of goods and capital between countries and created many employment opportunities locally. Emerging markets, especially Africa, forms a pivotal part of the global automotive industry. The South African automotive industry as the largest manufacturing and third largest economic sector in South Africa, has been acknowledged by government as a prime source of economic growth. The South African manufacturing businesses, in particular the automotive component manufactures (ACMs) are reliant on inventory for automotive manufacturing. In 2019, the world was hit by the Coronavirus virus outbreak known as COVID-19, which became a global health pandemic that significantly affected the global economy. The pandemic and lockdown measures implemented, seriously affected the automotive industry, in particular inventory management as it led to raw materials inventory shortages due to delivery delays. Therefore, the primary objective of this study was to investigate the inventory management decisions influencing effective inventory management in the South African automotive component manufacturing (SAACM) industry prior to Covid-19 and whether and how it changed since the Covid-19 pandemic. The comprehensive literature review identified four inventory management decisions as independent variables (inventory forecasting, inventory storage, inventory control and inventory staff capabilities management) and effective inventory management as the dependent variable in the proposed hypothesised model. The model was tested to establish the influence of the identified four inventory management decisions on effective inventory management in ACMs prior to Covid-19 and then again since Covid-19. A quantitative research approach was followed to collect data required for the hypothesis testing. Nonprobability sampling in particular judgemental sampling was utilised for this study by selecting respondents employed by ACMs in South Africa as logistics managers, supply chain managers, production supervisors, master production schedulers, cycle count operators and warehouse staff. A selfadministered internet-based questionnaire was used to obtain the data from the target sample comprising 200 respondents, of which 162 were usable for further statistical analysis. Data was analysed first for prior to and then for since Covid-19 using Statistica Version 14 computer software. Exploratory factor analysis (EFA) was used to extract the variables and validate the measuring instrument. The Cronbach's alpha values for reliability were confirmed for each of the variables identified in the two sets of EFAs. All four independent variables (inventory v management decisions) and the dependent variable (effective inventory management) for prior to as well as since Covid-19 were found to be valid and reliable and retained for further analyses. The results of the Pearson product moment correlation coefficients reported mostly weak and moderate associations between variables for both prior to and since Covid-19. The results of the multiple regression analysis (MRA) for prior to Covid-19 found four statistically significant relationships between the four independent variables - inventory forecasting management, inventory storage management, inventory control management and inventory staff capabilities management and the dependent variable effective inventory management. The results of the MRA for since Covid-19 found two statistically significant relationships between two independent variables inventory forecasting management and inventory resource management and the dependent variable effective inventory management. The tested hypothesised model provides a framework for further testing in future ACM inventory management studies in other countries. Business managers and inventory management staff of global ACMs can use it as a guide for effective inventory management; on which specific inventory management decisions to always pay attention to and, which inventory management decisions to pay attention to when a long-lasting pandemic occurs such as Covid-19. It is recommended that regardless of the Covid-19 pandemic, inventory managers in ACMs in South Africa should consider inventory forecasting management methods such as demand forecasting, determining the economic order quantity (EOQ) for all inventory item orders and materials requirement planning (MRP). They should also use an inventory information sharing system and inventory replenishment procedure to ensure inventory is managed effectively. During a prolonged pandemic such as Covid-19, inventory managers in ACMs in South Africa should pay particular attention to inventory resource management specifically regarding re-order inventory levels and classifying all inventory items according to the importance of using ABC analysis. They should further offer employees inventory training to remain abreast of new inventory developments in the industry and for career advancement. , Thesis (MCom) -- Faculty of Business and Economics Science, School of Applied Accounting, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Delport, Jason
- Date: 2022-12
- Subjects: Inventory management , Automobile industry and trade
- Language: English
- Type: Master's theses , Theses
- Identifier: http://hdl.handle.net/10948/59511 , vital:62145
- Description: Globalisation has enabled the automotive industry to source various automotive products worldwide. It assisted in increasing the economic growth of countries as it allowed the flow of goods and capital between countries and created many employment opportunities locally. Emerging markets, especially Africa, forms a pivotal part of the global automotive industry. The South African automotive industry as the largest manufacturing and third largest economic sector in South Africa, has been acknowledged by government as a prime source of economic growth. The South African manufacturing businesses, in particular the automotive component manufactures (ACMs) are reliant on inventory for automotive manufacturing. In 2019, the world was hit by the Coronavirus virus outbreak known as COVID-19, which became a global health pandemic that significantly affected the global economy. The pandemic and lockdown measures implemented, seriously affected the automotive industry, in particular inventory management as it led to raw materials inventory shortages due to delivery delays. Therefore, the primary objective of this study was to investigate the inventory management decisions influencing effective inventory management in the South African automotive component manufacturing (SAACM) industry prior to Covid-19 and whether and how it changed since the Covid-19 pandemic. The comprehensive literature review identified four inventory management decisions as independent variables (inventory forecasting, inventory storage, inventory control and inventory staff capabilities management) and effective inventory management as the dependent variable in the proposed hypothesised model. The model was tested to establish the influence of the identified four inventory management decisions on effective inventory management in ACMs prior to Covid-19 and then again since Covid-19. A quantitative research approach was followed to collect data required for the hypothesis testing. Nonprobability sampling in particular judgemental sampling was utilised for this study by selecting respondents employed by ACMs in South Africa as logistics managers, supply chain managers, production supervisors, master production schedulers, cycle count operators and warehouse staff. A selfadministered internet-based questionnaire was used to obtain the data from the target sample comprising 200 respondents, of which 162 were usable for further statistical analysis. Data was analysed first for prior to and then for since Covid-19 using Statistica Version 14 computer software. Exploratory factor analysis (EFA) was used to extract the variables and validate the measuring instrument. The Cronbach's alpha values for reliability were confirmed for each of the variables identified in the two sets of EFAs. All four independent variables (inventory v management decisions) and the dependent variable (effective inventory management) for prior to as well as since Covid-19 were found to be valid and reliable and retained for further analyses. The results of the Pearson product moment correlation coefficients reported mostly weak and moderate associations between variables for both prior to and since Covid-19. The results of the multiple regression analysis (MRA) for prior to Covid-19 found four statistically significant relationships between the four independent variables - inventory forecasting management, inventory storage management, inventory control management and inventory staff capabilities management and the dependent variable effective inventory management. The results of the MRA for since Covid-19 found two statistically significant relationships between two independent variables inventory forecasting management and inventory resource management and the dependent variable effective inventory management. The tested hypothesised model provides a framework for further testing in future ACM inventory management studies in other countries. Business managers and inventory management staff of global ACMs can use it as a guide for effective inventory management; on which specific inventory management decisions to always pay attention to and, which inventory management decisions to pay attention to when a long-lasting pandemic occurs such as Covid-19. It is recommended that regardless of the Covid-19 pandemic, inventory managers in ACMs in South Africa should consider inventory forecasting management methods such as demand forecasting, determining the economic order quantity (EOQ) for all inventory item orders and materials requirement planning (MRP). They should also use an inventory information sharing system and inventory replenishment procedure to ensure inventory is managed effectively. During a prolonged pandemic such as Covid-19, inventory managers in ACMs in South Africa should pay particular attention to inventory resource management specifically regarding re-order inventory levels and classifying all inventory items according to the importance of using ABC analysis. They should further offer employees inventory training to remain abreast of new inventory developments in the industry and for career advancement. , Thesis (MCom) -- Faculty of Business and Economics Science, School of Applied Accounting, 2022
- Full Text:
- Date Issued: 2022-12
Investigating various product derivatives for a sustainable aquaculture feed supply chain in South Africa
- Authors: Adam, Yusuf
- Date: 2022-12
- Subjects: Derivatives product , sustainable aquaculture , Supply Chain management -- South Africa
- Language: English
- Type: Doctoral's theses , Thesis
- Identifier: http://hdl.handle.net/10948/59531 , vital:62150
- Description: Contemporary aquaculture produces more seafood for growing global nutrition requirements than capture fisheries stocks, but aquaculture practices do have adverse environmental impacts. This research investigated more sustainable marine ecosystem management practices through alternative aquaculture feed ingredients and production systems that mimic natural marine food chains. The aim was to find an alternative feed model to make the industry more sustainable. Content analysis was used to let secondary research complement the empirical research to investigate the perceptions about various product derivatives for a more sustainable aquaculture feed supply chain. The survey entailed distributing 228 questionnaires and only 55 diverse stakeholders responded. By reviewing their perceptions of natural marine organisms and manufactured agricultural ingredients, the call for sustainably produced aquaculture feed could inform future sustainable supply chain management and marine ecosystem stewardship. , Thesis (DBA) -- Faculty of Business and Economic Sciences, School of Applied Accounting, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Adam, Yusuf
- Date: 2022-12
- Subjects: Derivatives product , sustainable aquaculture , Supply Chain management -- South Africa
- Language: English
- Type: Doctoral's theses , Thesis
- Identifier: http://hdl.handle.net/10948/59531 , vital:62150
- Description: Contemporary aquaculture produces more seafood for growing global nutrition requirements than capture fisheries stocks, but aquaculture practices do have adverse environmental impacts. This research investigated more sustainable marine ecosystem management practices through alternative aquaculture feed ingredients and production systems that mimic natural marine food chains. The aim was to find an alternative feed model to make the industry more sustainable. Content analysis was used to let secondary research complement the empirical research to investigate the perceptions about various product derivatives for a more sustainable aquaculture feed supply chain. The survey entailed distributing 228 questionnaires and only 55 diverse stakeholders responded. By reviewing their perceptions of natural marine organisms and manufactured agricultural ingredients, the call for sustainably produced aquaculture feed could inform future sustainable supply chain management and marine ecosystem stewardship. , Thesis (DBA) -- Faculty of Business and Economic Sciences, School of Applied Accounting, 2022
- Full Text:
- Date Issued: 2022-12
Investigation of thermal and electrical characteristics of crystalline silicon photovoltaic modules under varying operational conditions
- Authors: Vumbugwa, Monphias
- Date: 2022-12
- Subjects: Photovoltaic power generation -- South Africa , Silicon crystals -- South Africa , Solar cells
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60014 , vital:62733
- Description: Solar energy has become an attractive and environmentally mindful method in electrical power generation as it contributes significantly to meeting the high demand for the power needed for socio and economic developments. The rise in deployment of Photovoltaic (PV) facilities with large capacity creates the need for accurate and reliable PV inspection techniques for optimum performance, the longevity of PV modules and quick return on PV investment. The performance of PV modules in the field is often monitored through several inspection methods that require a rapid throughput such as Thermal Infrared (TIR) imaging and current-voltage (I-V) measurements. Unmanned Aerial Vehicle (UAV) based TIR imaging is widely applied in large PV plants since it is cost-effective and is usually conducted in-situ while the plant is operating at irradiance levels above 600 W.m-2 . One of the outcomes of the interpretations of TIR images is an attempt to quantify the energy loss in PV plants associated with the abnormal thermal signatures identified on TIR images. No standard procedure has yet outlined the quantification of energy loss related to TIR images of underperforming modules since the interpretation of TIR images remains a challenge. PV modules operate under dynamic operating conditions which can influence the results and interpretation of thermal and electrical characterisation measurements. Dynamic operation conditions refer to any disorders in the operation of the modules and cells which cause a change in the current and voltage characteristics of the PV source. These dynamic operation conditions include; changesin load conditions, irradiance, soiling and shading levels. The tests were done under steady state conditions. Although measurements are generally done while the operating conditions are as steady as possible, some changes in conditions have a profound effect on thermal and electrical measurements. In this study, these effects and some of the changes in conditions that cause them were studied. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Vumbugwa, Monphias
- Date: 2022-12
- Subjects: Photovoltaic power generation -- South Africa , Silicon crystals -- South Africa , Solar cells
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60014 , vital:62733
- Description: Solar energy has become an attractive and environmentally mindful method in electrical power generation as it contributes significantly to meeting the high demand for the power needed for socio and economic developments. The rise in deployment of Photovoltaic (PV) facilities with large capacity creates the need for accurate and reliable PV inspection techniques for optimum performance, the longevity of PV modules and quick return on PV investment. The performance of PV modules in the field is often monitored through several inspection methods that require a rapid throughput such as Thermal Infrared (TIR) imaging and current-voltage (I-V) measurements. Unmanned Aerial Vehicle (UAV) based TIR imaging is widely applied in large PV plants since it is cost-effective and is usually conducted in-situ while the plant is operating at irradiance levels above 600 W.m-2 . One of the outcomes of the interpretations of TIR images is an attempt to quantify the energy loss in PV plants associated with the abnormal thermal signatures identified on TIR images. No standard procedure has yet outlined the quantification of energy loss related to TIR images of underperforming modules since the interpretation of TIR images remains a challenge. PV modules operate under dynamic operating conditions which can influence the results and interpretation of thermal and electrical characterisation measurements. Dynamic operation conditions refer to any disorders in the operation of the modules and cells which cause a change in the current and voltage characteristics of the PV source. These dynamic operation conditions include; changesin load conditions, irradiance, soiling and shading levels. The tests were done under steady state conditions. Although measurements are generally done while the operating conditions are as steady as possible, some changes in conditions have a profound effect on thermal and electrical measurements. In this study, these effects and some of the changes in conditions that cause them were studied. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2022
- Full Text:
- Date Issued: 2022-12
Knee Joint Competence Post Anterior Cruciate Ligament Reconstruction in Amateur South Western Districts Rugby Players
- Potgieter, Quinten Christiaan
- Authors: Potgieter, Quinten Christiaan
- Date: 2022-12
- Subjects: Neuromuscular depolarizing agents , Knee--Wounds and injuries -- South Western Districts , Rugby Players
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60266 , vital:64289
- Description: Background: Globally, literature has shown that rugby players struggle to return to the same level of performance post anterior cruciate ligament (ACL) reconstruction. This phenomenon is further exacerbated amongst South African Rugby players, compounded by the ranking of the national team amongst the top ten rugby teams worldwide. Paired with the psychosocial aspect of return to play, the physical and physiological competence of the knee joint is of pivotal importance. Purpose: To compare relative dynamic stability scores paired with electromyography (EMG) scores between the injured and uninjured legs, thereby enabling an explorative, descriptive report on dynamic proprioceptive abilities post ACL reconstruction (ACLR). The study findings therefore aim to inform rehabilitative practice in a rugby player who underwent ACLR. Study Design: A quantitative, explorative and descriptive design was used, with a purposive sampling strategy. Methods: Biographical and anthropometrical data was measured upon inception. Muscular activation was measured using electromyography (EMG) placements on quadriceps muscles which included the vastus medialis obliques (VMO), and vastus lateralis (VL). Dynamic proprioception was measured using the star excursion balance test (SEBT) and normalised to leg length. A neuromuscular fatigue protocol was used to measure the impact of neuromuscular fatigue on dynamic stability, and muscle activation between the injured and uninjured lower limbs. Results: A sample of 15 participants from the South Western Districts (SWD) rugby team, fitting the inclusion criteria, were included in the study. The average age was 27±2.7 years. The results indicated that fatigue did not significantly affect the SEBT scores between the injured and uninjured lower limbs. However, the VMO muscle activation showed a statistically significant difference in muscle firing in a pre-fatigue state. This difference was evident in two of the eight directions namely anteromedial direction (p = 0.041), and in the lateral direction (p = 0.047). Furthermore, these result differences were favoured in the uninjured limb. No significant differences between the injured and uninjured lower limbs were found in respect to VMO and VL muscle activation, in a fatigued state. vi Conclusion: Practically translated, the study results showed that the injured lower limb, showed no significant differences in dynamic stability during both the non-fatigued and the fatigued SEBT. Therefore, the finding of this study is a steppingstone towards informing return to play criteria for adequate dynamic knee stability and proprioception. It should be noted that further research is necessary to refine return to play criteria and thereby decrease the risk for re-injury. Keywords: anterior cruciate ligament; dynamic stability; neuro-muscular fatigue; reconstruction; re-injury; return-to-sport; rugby. , Thesis (MA) -- Faculty of Health Sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Potgieter, Quinten Christiaan
- Date: 2022-12
- Subjects: Neuromuscular depolarizing agents , Knee--Wounds and injuries -- South Western Districts , Rugby Players
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60266 , vital:64289
- Description: Background: Globally, literature has shown that rugby players struggle to return to the same level of performance post anterior cruciate ligament (ACL) reconstruction. This phenomenon is further exacerbated amongst South African Rugby players, compounded by the ranking of the national team amongst the top ten rugby teams worldwide. Paired with the psychosocial aspect of return to play, the physical and physiological competence of the knee joint is of pivotal importance. Purpose: To compare relative dynamic stability scores paired with electromyography (EMG) scores between the injured and uninjured legs, thereby enabling an explorative, descriptive report on dynamic proprioceptive abilities post ACL reconstruction (ACLR). The study findings therefore aim to inform rehabilitative practice in a rugby player who underwent ACLR. Study Design: A quantitative, explorative and descriptive design was used, with a purposive sampling strategy. Methods: Biographical and anthropometrical data was measured upon inception. Muscular activation was measured using electromyography (EMG) placements on quadriceps muscles which included the vastus medialis obliques (VMO), and vastus lateralis (VL). Dynamic proprioception was measured using the star excursion balance test (SEBT) and normalised to leg length. A neuromuscular fatigue protocol was used to measure the impact of neuromuscular fatigue on dynamic stability, and muscle activation between the injured and uninjured lower limbs. Results: A sample of 15 participants from the South Western Districts (SWD) rugby team, fitting the inclusion criteria, were included in the study. The average age was 27±2.7 years. The results indicated that fatigue did not significantly affect the SEBT scores between the injured and uninjured lower limbs. However, the VMO muscle activation showed a statistically significant difference in muscle firing in a pre-fatigue state. This difference was evident in two of the eight directions namely anteromedial direction (p = 0.041), and in the lateral direction (p = 0.047). Furthermore, these result differences were favoured in the uninjured limb. No significant differences between the injured and uninjured lower limbs were found in respect to VMO and VL muscle activation, in a fatigued state. vi Conclusion: Practically translated, the study results showed that the injured lower limb, showed no significant differences in dynamic stability during both the non-fatigued and the fatigued SEBT. Therefore, the finding of this study is a steppingstone towards informing return to play criteria for adequate dynamic knee stability and proprioception. It should be noted that further research is necessary to refine return to play criteria and thereby decrease the risk for re-injury. Keywords: anterior cruciate ligament; dynamic stability; neuro-muscular fatigue; reconstruction; re-injury; return-to-sport; rugby. , Thesis (MA) -- Faculty of Health Sciences, 2022
- Full Text:
- Date Issued: 2022-12
Knowledge, attitude and perceptions of pre-hospital emergency care providers concerning pre-hospital clinical practice guidelines in the Mangaung Metropolitan area, Free State, South Africa
- Ramoshaba, Mapule Petronella
- Authors: Ramoshaba, Mapule Petronella
- Date: 2022-12
- Subjects: Emergency medical services
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27220 , vital:66471
- Description: Background and Introduction. Pre-hospital emergency care provided in a timeous and efficient manner is a pivotal component in improved patient prognosis, after a life altering situation has occurred. This management of patients is rendered prior to arrival at a medical facility. This service is provided by pre-hospital emergency care providers who apply life saving techniques and knowledge within their scopes of practice and then transporting patients to appropriate medical facilities for definitive care. Pre-hospital emergency care providers of all levels of care, namely: Basic life support, Intermediate life support and Advanced life support render emergency care services to patients with a main goal of seeing patients return back to normal life living. For this to be achieved, the providers must be empowered with the best knowledge, appropriate skills and adequate equipment at their disposal. Clinical practice guidelines are recommendations that are based on evidence in order to support beneficial clinical practices. These were introduced in the pre-hospital setting in South Africa in 2018 to review the scopes of practice of all levels of care, and make appropriate changes and additions for the betterment of the patient and the upskilling of pre-hospital emergency care providers. Since the providers are the end users of these guidelines, and are expected to apply them on patients, they are the best candidates to provide clarity on their perceptions, experiences and challenges which leads to the research questions being: What are the perceptions of the Pre-hospital Emergency Care Providers on the Pre-hospital Clinical Practice in the Guidelines? And What are the challenges experienced by the Pre-hospital Emergency Care Providers with regards to the implementation of the Pre-hospital Clinical Practice Guidelines in the application of Pre-hospital emergency medicine? The aim of the study was to explore the perceptions of the Pre-hospital Emergency Care Providers using the implemented Pre-hospital Clinical Practice Guidelines. Methods The study adopted a qualitative research approach with a purposive sampling method used to select the participants. This type of non-probability technique was suitable in the study as it is based on the researcher’s judgement of the participants being knowledgeable on the questions asked. An interview guide was utilised to collect data through semi-structured one on one interviews during which participants perceptions on the Clinical practice guidelines were shared. The data analysis process brought forth themes and sub themes that were aligned to the research findings which yielded the results. Results/findings The results encompassed the participants’ perceptions about pre-hospital clinical Practice Guidelines, as well as their knowledge, attitude, challenges, suggestions and recommendations. These results unearthed some of the reasons for the pre-hospital emergency care providers perceptions towards the guidelines. The majority of PECPS have a positive attitude towards the pre-hospital clinical practice guidelines, but have challenges with the availability of equipment and drugs which is caused by the lack of due diligence in complying with the implementation of the guidelines. Conclusion The recommendations and suggestions from the participants and researcher come with divisive strategies to the implementation of the guidelines and activities to be applied for the smooth implementation of the pre-hospital clinical practice guidelines. The basis for these recommendations and suggestions were the results as per the research findings. , Thesis (MPH) -- Faculty of Health Sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Ramoshaba, Mapule Petronella
- Date: 2022-12
- Subjects: Emergency medical services
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27220 , vital:66471
- Description: Background and Introduction. Pre-hospital emergency care provided in a timeous and efficient manner is a pivotal component in improved patient prognosis, after a life altering situation has occurred. This management of patients is rendered prior to arrival at a medical facility. This service is provided by pre-hospital emergency care providers who apply life saving techniques and knowledge within their scopes of practice and then transporting patients to appropriate medical facilities for definitive care. Pre-hospital emergency care providers of all levels of care, namely: Basic life support, Intermediate life support and Advanced life support render emergency care services to patients with a main goal of seeing patients return back to normal life living. For this to be achieved, the providers must be empowered with the best knowledge, appropriate skills and adequate equipment at their disposal. Clinical practice guidelines are recommendations that are based on evidence in order to support beneficial clinical practices. These were introduced in the pre-hospital setting in South Africa in 2018 to review the scopes of practice of all levels of care, and make appropriate changes and additions for the betterment of the patient and the upskilling of pre-hospital emergency care providers. Since the providers are the end users of these guidelines, and are expected to apply them on patients, they are the best candidates to provide clarity on their perceptions, experiences and challenges which leads to the research questions being: What are the perceptions of the Pre-hospital Emergency Care Providers on the Pre-hospital Clinical Practice in the Guidelines? And What are the challenges experienced by the Pre-hospital Emergency Care Providers with regards to the implementation of the Pre-hospital Clinical Practice Guidelines in the application of Pre-hospital emergency medicine? The aim of the study was to explore the perceptions of the Pre-hospital Emergency Care Providers using the implemented Pre-hospital Clinical Practice Guidelines. Methods The study adopted a qualitative research approach with a purposive sampling method used to select the participants. This type of non-probability technique was suitable in the study as it is based on the researcher’s judgement of the participants being knowledgeable on the questions asked. An interview guide was utilised to collect data through semi-structured one on one interviews during which participants perceptions on the Clinical practice guidelines were shared. The data analysis process brought forth themes and sub themes that were aligned to the research findings which yielded the results. Results/findings The results encompassed the participants’ perceptions about pre-hospital clinical Practice Guidelines, as well as their knowledge, attitude, challenges, suggestions and recommendations. These results unearthed some of the reasons for the pre-hospital emergency care providers perceptions towards the guidelines. The majority of PECPS have a positive attitude towards the pre-hospital clinical practice guidelines, but have challenges with the availability of equipment and drugs which is caused by the lack of due diligence in complying with the implementation of the guidelines. Conclusion The recommendations and suggestions from the participants and researcher come with divisive strategies to the implementation of the guidelines and activities to be applied for the smooth implementation of the pre-hospital clinical practice guidelines. The basis for these recommendations and suggestions were the results as per the research findings. , Thesis (MPH) -- Faculty of Health Sciences, 2022
- Full Text:
- Date Issued: 2022-12
Leader preparedness to manage employee wellness at Continental Tyres
- Authors: O’Reilly, Clynn
- Date: 2022-12
- Subjects: Employee management , Health promotion, Continental Tyres
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/59809 , vital:62436
- Description: Many businesses are becoming more aware of the importance of employee well-being and health. There has been increasing public interest in merging wellness activities with an employer's obligations. This shift toward healthy workplaces and empowered individuals reflects a correlation between organisational well-being and pleasant psychological states. As a result, several programmes such as Employee Assistance Programmes (EAP) and Employee Wellness Programmes were established to address workplace wellness issues. Employee Wellness Programmes are intervention programmes targeted at improving the well-being of employees. The epidemic has underlined what was already obvious prior to the virus's emergence: that firms no longer require hero leaders. Today's most effective leadership at all levels is not about technical knowledge or knowing all the answers. It is about being human, displaying vulnerability, connecting with others, while being able to unlock their potential, in addition to communicating a clear direction. This study was conducted to determine the preparedness of leaders to manage employee wellness at lower, middle and upper management levels at Continental Tyres South Africa (SA). For this study, primary data was collected by means of semistructured interviews. Qualitative data was collected by conducting interviews with employees from lower, middle and upper management. Face-to-face interviews, using open ended questions, were used to assess managers’ preparedness to address staff wellbeing. Employee wellbeing is a vital component for any organisation's performance in all facets of business operations, according to the findings. Fundamental training is required to ensure leaders are prepared to deal with employee wellness issues. The absence of this training is a major contributor to inadequate policies, procedures, and cultures that should promote employee wellness in an organisation. The lack of training that would contribute to leader preparedness in managing employee wellness has been apparent in this study. Another emerging conclusion that was highlighted in this study is the lack of prioritisation of wellness initiatives and awareness of resources available to employees. This conclusion is a key factor in understanding why there is such a iii deficiency in fundamental training for leaders within the organisation. The lack of prioritisation could have a direct impact on the lack of training offered to leaders in the organisation. , Thesis (MBA) -- Faculty of Business and Economic Science, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: O’Reilly, Clynn
- Date: 2022-12
- Subjects: Employee management , Health promotion, Continental Tyres
- Language: English
- Type: Master's theses , Thesis
- Identifier: http://hdl.handle.net/10948/59809 , vital:62436
- Description: Many businesses are becoming more aware of the importance of employee well-being and health. There has been increasing public interest in merging wellness activities with an employer's obligations. This shift toward healthy workplaces and empowered individuals reflects a correlation between organisational well-being and pleasant psychological states. As a result, several programmes such as Employee Assistance Programmes (EAP) and Employee Wellness Programmes were established to address workplace wellness issues. Employee Wellness Programmes are intervention programmes targeted at improving the well-being of employees. The epidemic has underlined what was already obvious prior to the virus's emergence: that firms no longer require hero leaders. Today's most effective leadership at all levels is not about technical knowledge or knowing all the answers. It is about being human, displaying vulnerability, connecting with others, while being able to unlock their potential, in addition to communicating a clear direction. This study was conducted to determine the preparedness of leaders to manage employee wellness at lower, middle and upper management levels at Continental Tyres South Africa (SA). For this study, primary data was collected by means of semistructured interviews. Qualitative data was collected by conducting interviews with employees from lower, middle and upper management. Face-to-face interviews, using open ended questions, were used to assess managers’ preparedness to address staff wellbeing. Employee wellbeing is a vital component for any organisation's performance in all facets of business operations, according to the findings. Fundamental training is required to ensure leaders are prepared to deal with employee wellness issues. The absence of this training is a major contributor to inadequate policies, procedures, and cultures that should promote employee wellness in an organisation. The lack of training that would contribute to leader preparedness in managing employee wellness has been apparent in this study. Another emerging conclusion that was highlighted in this study is the lack of prioritisation of wellness initiatives and awareness of resources available to employees. This conclusion is a key factor in understanding why there is such a iii deficiency in fundamental training for leaders within the organisation. The lack of prioritisation could have a direct impact on the lack of training offered to leaders in the organisation. , Thesis (MBA) -- Faculty of Business and Economic Science, 2022
- Full Text:
- Date Issued: 2022-12
Low energy storage off-grid photovoltaic systems
- Authors: Ribisi, Edwin Tebogo
- Date: 2022-12
- Subjects: Solar panels , Photovoltaic power systems
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60489 , vital:65634
- Description: Electricity is one of humanity's most important resources for enhancing the quality of life. With over 770 million people worldwide still without access to electricity, this is a big global challenge that requires a variety of solutions if we humans are to achieve the 2030 sustainable development objectives, such as zero poverty and universal access to electricity. A major number of the 770 million people who lack access to electricity reside in regions with abundant sun irradiation. Electrification is a practical key to unlocking socio-economic development in impoverished regions. PV systems with batteries have a disadvantage of requiring high capital costs, with batteries being the most expensive component in such a system. Accumulation of maintenance and replacement costs of batteries are high throughout the lifespan of a PV system with batteries due to limited lifespan of batteries, typical 1-3 years. A batteryless PV system for daytime commercial purposes is proposed in the dissertation. An experimental set up of the proposed batteryless PV system was constructed and tested in a laboratory. A load controller for the batteryless PV system was implemented, loads were given priority levels and schedule times to be operated during the day. A DC dump load regulates DC bus voltage and also acts as a water heater. Furthermore, a simulation model was developed on MATLAB Simulink. The simulation model consisted of two case study scenarios, 3 solar panel system and 7 solar panel system of an internet café business. Better system performance was noticed when loads were given priority levels with no schedule times. This dissertation establishes the foundation for a completely batteryless solar system designed to cultivate daytime economic activities in impoverished communities to increase revenue opportunities. , Thesis (MA) -- Faculty of Engineering, the Built Environment and Technology, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Ribisi, Edwin Tebogo
- Date: 2022-12
- Subjects: Solar panels , Photovoltaic power systems
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60489 , vital:65634
- Description: Electricity is one of humanity's most important resources for enhancing the quality of life. With over 770 million people worldwide still without access to electricity, this is a big global challenge that requires a variety of solutions if we humans are to achieve the 2030 sustainable development objectives, such as zero poverty and universal access to electricity. A major number of the 770 million people who lack access to electricity reside in regions with abundant sun irradiation. Electrification is a practical key to unlocking socio-economic development in impoverished regions. PV systems with batteries have a disadvantage of requiring high capital costs, with batteries being the most expensive component in such a system. Accumulation of maintenance and replacement costs of batteries are high throughout the lifespan of a PV system with batteries due to limited lifespan of batteries, typical 1-3 years. A batteryless PV system for daytime commercial purposes is proposed in the dissertation. An experimental set up of the proposed batteryless PV system was constructed and tested in a laboratory. A load controller for the batteryless PV system was implemented, loads were given priority levels and schedule times to be operated during the day. A DC dump load regulates DC bus voltage and also acts as a water heater. Furthermore, a simulation model was developed on MATLAB Simulink. The simulation model consisted of two case study scenarios, 3 solar panel system and 7 solar panel system of an internet café business. Better system performance was noticed when loads were given priority levels with no schedule times. This dissertation establishes the foundation for a completely batteryless solar system designed to cultivate daytime economic activities in impoverished communities to increase revenue opportunities. , Thesis (MA) -- Faculty of Engineering, the Built Environment and Technology, 2022
- Full Text:
- Date Issued: 2022-12
Main thesis title
- Authors: Tsamago, Hodi, Elias
- Date: 2022-12
- Subjects: Technology integration , SOLEs pedagogy , Metacognitive
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60549 , vital:65833
- Description: The study was carried out to investigate the effect of the use of technology in self-organised learning environments (SOLEs) (in Physical Sciences classrooms) on learners’ metacognitive skills. The study contributes by identifying a technology-enhanced pedagogy that can effectively equip learners with metacognitive skills, which many studies have reported as having an effect on Physical Sciences learners’ conceptual understanding. The study followed an experimental (control group quasi-experimental) methods design, in which both qualitative and quantitative data were collected and analysed. A multistep stratified sampling method (which caters for both quantitative and qualitative facets) was employed to choose four schools (two rural and two urban) to participate in the study. These schools were randomly chosen from the population of all schools offering Physical Sciences in Grade 11 in the Capricorn District of Limpopo Province, South Africa were assigned to urban experimental group and rural experimental group (UEG and REG) and urban control group and rural control group (UCG and RCG) using geographical demographics. The participants were selected using both simple random sampling (for quantitative methods) and purposive sampling (for qualitative methods). The experimental groups were taught by the researcher using self-organised learning environments (SOLEs) pedagogy, while control groups were taught (also by the researcher of the study) using a traditional chalk-and-talk approach. A Physical Sciences concepts pre-/post-test and the Metacognitive Self-Assessment Scale (MSAS) questionnaire were used to glean the quantitative data, while focus group interviews (FGIs) were used to obtain the qualitative data. The analysis of the quantitative data employed both descriptive (mean, standard deviation and graphs) and inferential (both parametric t-test and non-parametric Kruskal-Wallis and Wilcoxon signed-rank tests) statistics computed using the SPSS package version 22, while qualitative data were analysed thematically using coding techniques (applied on a sentence-by-sentence basis) after the transcription of the recorded FGIs. The study found that SOLEs pedagogy improves learners’ metacognitive skills, leading to better Physical Sciences conceptual understanding. In addition, the results indicate that all v aspects of metacognitive skills improved in experimental groups; however, certain aspects exhibited outstanding improvement such as “Respect shown to myself”; “Respect shown to others”; “Respect shown for empathy towards others” and “Respect shown towards problem solving”. Furthermore, the results of the FGIs revealed that a plausible explanation for the ability of SOLEs pedagogy to enhance metacognitive skills lies in its effortlessness to enable learners to link their classroom experiences to real-life experiences; simulate practical work; adapt to collaborative learning; use multiple channels for receiving information; and reducing learners’ reliance on the teacher. Hence, this study recommends the implementation of SOLEs pedagogy in the Physical Sciences classroom to improve learners’ metacognitive skills and conceptual understanding. However, the study had limitations, some of which included the sample size (which has an effect on the degree of generalisability of the research findings) and the period during which SOLEs pedagogy was implemented which might not have been long enough to exhaust its effect on metacognitive skills. Accordingly, further studies employing a longitudinal study design with a sample size bigger than 350 participants would be useful in understanding the effects of SOLEs pedagogy on metacognitive skills and improving the generalisability of research findings , Thesis (PhD) -- Faculty of education, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Tsamago, Hodi, Elias
- Date: 2022-12
- Subjects: Technology integration , SOLEs pedagogy , Metacognitive
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10948/60549 , vital:65833
- Description: The study was carried out to investigate the effect of the use of technology in self-organised learning environments (SOLEs) (in Physical Sciences classrooms) on learners’ metacognitive skills. The study contributes by identifying a technology-enhanced pedagogy that can effectively equip learners with metacognitive skills, which many studies have reported as having an effect on Physical Sciences learners’ conceptual understanding. The study followed an experimental (control group quasi-experimental) methods design, in which both qualitative and quantitative data were collected and analysed. A multistep stratified sampling method (which caters for both quantitative and qualitative facets) was employed to choose four schools (two rural and two urban) to participate in the study. These schools were randomly chosen from the population of all schools offering Physical Sciences in Grade 11 in the Capricorn District of Limpopo Province, South Africa were assigned to urban experimental group and rural experimental group (UEG and REG) and urban control group and rural control group (UCG and RCG) using geographical demographics. The participants were selected using both simple random sampling (for quantitative methods) and purposive sampling (for qualitative methods). The experimental groups were taught by the researcher using self-organised learning environments (SOLEs) pedagogy, while control groups were taught (also by the researcher of the study) using a traditional chalk-and-talk approach. A Physical Sciences concepts pre-/post-test and the Metacognitive Self-Assessment Scale (MSAS) questionnaire were used to glean the quantitative data, while focus group interviews (FGIs) were used to obtain the qualitative data. The analysis of the quantitative data employed both descriptive (mean, standard deviation and graphs) and inferential (both parametric t-test and non-parametric Kruskal-Wallis and Wilcoxon signed-rank tests) statistics computed using the SPSS package version 22, while qualitative data were analysed thematically using coding techniques (applied on a sentence-by-sentence basis) after the transcription of the recorded FGIs. The study found that SOLEs pedagogy improves learners’ metacognitive skills, leading to better Physical Sciences conceptual understanding. In addition, the results indicate that all v aspects of metacognitive skills improved in experimental groups; however, certain aspects exhibited outstanding improvement such as “Respect shown to myself”; “Respect shown to others”; “Respect shown for empathy towards others” and “Respect shown towards problem solving”. Furthermore, the results of the FGIs revealed that a plausible explanation for the ability of SOLEs pedagogy to enhance metacognitive skills lies in its effortlessness to enable learners to link their classroom experiences to real-life experiences; simulate practical work; adapt to collaborative learning; use multiple channels for receiving information; and reducing learners’ reliance on the teacher. Hence, this study recommends the implementation of SOLEs pedagogy in the Physical Sciences classroom to improve learners’ metacognitive skills and conceptual understanding. However, the study had limitations, some of which included the sample size (which has an effect on the degree of generalisability of the research findings) and the period during which SOLEs pedagogy was implemented which might not have been long enough to exhaust its effect on metacognitive skills. Accordingly, further studies employing a longitudinal study design with a sample size bigger than 350 participants would be useful in understanding the effects of SOLEs pedagogy on metacognitive skills and improving the generalisability of research findings , Thesis (PhD) -- Faculty of education, 2022
- Full Text:
- Date Issued: 2022-12
Mesozooplankton and particle dynamics in Algoa Bay, South Africa
- Engelbrecht, Melindi Frances
- Authors: Engelbrecht, Melindi Frances
- Date: 2022-12
- Subjects: Marine zooplankton – Algoa bay -- South Africa , Estuarine ecology , Zooplankton –Ecology --South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59544 , vital:62157
- Description: Coastal ecosystems provide society with important ecosystem services: climate regulation, biogeochemical nutrient and waste cycling, food security, shoreline protection, tourism, and recreational support. Increased anthropogenic pressure on coastal ecosystems and changing environmental variables ultimately affect the provision of ecosystem services. Mesozooplankton are key trophic species and biological indicators of change within the marine environment and provide sound predictions of ecosystem responses to a changing climate due to their short life cycles and physiology linked to temperature. Algoa Bay has been the subject of extensive research and monitoring and encompasses a marine protected area (Addo Elephant National Park MPA). The Underwater Vision Profiler 5 (UVP5) was utilised with conventional sampling techniques of the PELTER monitoring program (i.e., Bongo nets) to investigate mesozooplankton (200 – 2000 µm) and particle (> 100 µm) dynamics within the dynamic coastal ecosystem of Algoa Bay, located within warmtemperate South Africa, in spring 2020 and summer 2021. This study revealed seasonal shifts in mesozooplankton taxa succession from spring herbivorous/omnivorous, dominated by copepods, to summer omnivorous/carnivorous mesozooplankton, dominated by copepods, Noctiluca sp., Cladocera, doliolids, salps and siphonophores. The mesozooplankton integrated abundance (mean ± standard error) increased from spring to summer, with 101 ± 26 (min. – max.: 18 – 200) x 103 ind m¯ 2 and 422 ± 80 (min. – max.: 37 – 1056) x 103 ind m¯ 2 , respectively. In summer, mesozooplankton composition was affected by the passage of a Natal Pulse, identified from satellite-derived sea level anomaly data. This study also provided the first vertical profiles of copepod distributions and suspended particles in Algoa Bay, with a peak of small particle (< 1 mm ESD) biomass close to the bottom and often, but not systematically, higher copepod abundances above the thermocline. The results presented herein are expected to contribute to the understanding of the coastal pelagic ecosystem in Algoa Bay in response to environmental perturbations , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Engelbrecht, Melindi Frances
- Date: 2022-12
- Subjects: Marine zooplankton – Algoa bay -- South Africa , Estuarine ecology , Zooplankton –Ecology --South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/59544 , vital:62157
- Description: Coastal ecosystems provide society with important ecosystem services: climate regulation, biogeochemical nutrient and waste cycling, food security, shoreline protection, tourism, and recreational support. Increased anthropogenic pressure on coastal ecosystems and changing environmental variables ultimately affect the provision of ecosystem services. Mesozooplankton are key trophic species and biological indicators of change within the marine environment and provide sound predictions of ecosystem responses to a changing climate due to their short life cycles and physiology linked to temperature. Algoa Bay has been the subject of extensive research and monitoring and encompasses a marine protected area (Addo Elephant National Park MPA). The Underwater Vision Profiler 5 (UVP5) was utilised with conventional sampling techniques of the PELTER monitoring program (i.e., Bongo nets) to investigate mesozooplankton (200 – 2000 µm) and particle (> 100 µm) dynamics within the dynamic coastal ecosystem of Algoa Bay, located within warmtemperate South Africa, in spring 2020 and summer 2021. This study revealed seasonal shifts in mesozooplankton taxa succession from spring herbivorous/omnivorous, dominated by copepods, to summer omnivorous/carnivorous mesozooplankton, dominated by copepods, Noctiluca sp., Cladocera, doliolids, salps and siphonophores. The mesozooplankton integrated abundance (mean ± standard error) increased from spring to summer, with 101 ± 26 (min. – max.: 18 – 200) x 103 ind m¯ 2 and 422 ± 80 (min. – max.: 37 – 1056) x 103 ind m¯ 2 , respectively. In summer, mesozooplankton composition was affected by the passage of a Natal Pulse, identified from satellite-derived sea level anomaly data. This study also provided the first vertical profiles of copepod distributions and suspended particles in Algoa Bay, with a peak of small particle (< 1 mm ESD) biomass close to the bottom and often, but not systematically, higher copepod abundances above the thermocline. The results presented herein are expected to contribute to the understanding of the coastal pelagic ecosystem in Algoa Bay in response to environmental perturbations , Thesis (MSc) -- Faculty of Science, School of Environmental Sciences, 2022
- Full Text:
- Date Issued: 2022-12