Molecular characterization of integrons and their associated gene cassettes in multidrug-resistant enterobacteriaceae isolates from environmental sources and the exploration of antibiotic combination against some resistant strains
- Fadare, Folake Temitope https://orcid.org/0000-0001-5779-9798
- Authors: Fadare, Folake Temitope https://orcid.org/0000-0001-5779-9798
- Date: 2023
- Subjects: Enterobacteriaceae , Molecular microbiology , Enterobacteria
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/27809 , vital:69942
- Description: Globally, the increasing rate of antimicrobial resistance against our currently available drugs has been a serious public concern. Due to the selective nature of antibiotics, bacteria are expected to develop resistance against them over time, but the current scourge of antimicrobial resistance is aggravated by factors other than the expected evolutionary trend. The use and overuse of antibiotics in clinical and agricultural contexts have led to the fast rise of multidrug-resistant MDR microorganisms. A scenario that necessitates an upsurge in the clinical failures observed with our current drug arsenals is expected to rise if left unchecked. One of the significant drivers implicated in the spread of antimicrobial resistance genes is the integrons. These are mobile genetic elements found on pathogenicity islands, transposons, and plasmids, easing their distribution among various bacteria. They are considered efficient gene expression systems that naturally capture, integrate gene cassettes GCs and immediately express the captured antimicrobial resistance genes on the GCs due to the inherent promoters on their structures. Integrons have been known to confer resistance against most classes of antibiotics. These include all known β-lactams, chloramphenicol, trimethoprim, erythromycin, aminoglycosides, quinolones, streptothricin, lincomycin, rifampicin, fosfomycin, and antiseptics of the quaternary ammonium compound family. They have been detected in bacterial populations under direct or indirect antibiotic pressure in clinical, agricultural, and environmental contexts. The emergence of MDR in Enterobacteriaceae is a critical public health issue that has attracted the World Health Organization WHO, which classified them as one of the critical priority pathogens urgently requiring new antibiotics. The resistance phenomenon has proven most of the current antibiotics ineffective, further compounded by the slow pace of the discovery of new antibiotics, necessitating the hunt for new, practical remedies. One of such is the exploration of synergy among existing antibiotics. Two medications combined have a higher impact, thereby allowing current antibiotics to be salvaged for use in treating MDR bacteria, even if the bacteria are resistant against one or both antibiotics separately. Hence, this research focused on the occurrence and prevalence of multidrug resistance and the characterization of integrons and their associated gene cassettes in members of Enterobacteriaceae, including Klebsiella pneumoniae, Klebsiella oxytoca, Enterobacter cloacae, Escherichia coli, and Citrobacter spp. recovered from animal droppings, rivers, and effluents of hospital and wastewater treatment plants in Eastern Cape Province, South Africa. The inhibitory effect of combining two drugs belonging to different antibiotic classes to obtain a possible potentiating effect against some multidrug-resistant Enterobacteriaceae isolates harbouring integrons were examined and studied. The isolates were identified using the conventional molecular Polymerase Chain Reaction with specific primers. The antimicrobial resistance profile and the production of Extended-spectrum and metallo β-lactamase were detected using disk diffusion technique DDT, double-disk synergy test DDST, and ethylenediaminetetraacetic acid EDTA tests, respectively. The PCR-based screening method, DNA sequencing analyses, and restriction fragment length polymorphism RFLP were used to characterize the integrons and their associated GCs. Furthermore, Enterobacterial Repetitive Intergenic Consensus ERIC PCR determined the genotypic relationships between some specific species. The various antibiotics' minimum inhibitory concentration MIC was determined using the broth microdilution, while the checkerboard method was used to determine the fractional inhibitory concentration indices FICIs. The time-kill assays TKAs were further used to confirm the synergism observed from the checkerboard assays. Most of the isolates were resistant against most antibiotics tested and were considered MDR. The least resistance was observed against imipenem, a carbapenem, one of the drugs of last resort. Also present were the ESBL and MBL producers, with a few isolates co-producing the enzymes. A high prevalence of integrons was observed in the isolates, with class 1 integrons being the most frequently detected. Some isolates co-harboured the intI1 and intI2 genes and were classified as class1 plus 2 integrons. Although Citrobacter spp. had the least number of isolates among the Enterobacteriaceae studied, it harboured the most diverse gene cassette arrays. The various gene cassette arrays were identified as follows: For Klebsiella spp. Aac 6 Ib, aadA1 dfrA1, and dfrA1 sat2; for Citrobacter spp., dfrA5 aac3 Ib, aac6 ib, aadA1dfrA1 aadA1, aadA1-dfrA1, aadA5 dfrA17, and dfrA21-aac3-Ib; for E. coli dfrA21- aac-3-Ib, dfrA5-aac-3-Ib, aadA1 dfrA1, and aadA5 dfrA17 and for E. cloacae aadA1 dfrA1, dfrA7 dfrA21 dfrA5 aac 3 Ib, and dfrA1 sat2. The GC array dfrA1 sat2 was the only array detected in class 2 integrons which are analogous to that found in Tn7, dfrA1-sat2-aadA1, with the deletion of the last GC aadA1. These detected GCs confer resistance against aminoglycosides, including streptomycin and spectinomycin, and trimethoprim, further increasing the resistance spectrum of the bacterial species harbouring them. The detection of integrons and their associated GC and the presence of these β-lactamases is also associated with coresistance against other classes of antibiotics by bacterial species harbouring them, further limiting treatment options. The checkerboard assays combining antibiotics against these drug-resistant integron harbouring Enterobacteriaceae revealed that 26.3 percent 10 over 38 of the interactions were categorized as synergistic, while 73.7 percent 28 over 38 were indifferent. None of the combinations was antagonistic. The TKAs revealed all the synergistic interactions as bactericidal. Therefore, the combinations of gentamicin with tetracycline, ciprofloxacin, and ceftazidime against Multidrug-resistant MDR Klebsiella pneumoniae; tetracycline-ceftazidime combination against MDR Escherichia coli, colistin combinations with ceftazidime and gentamicin, and tetracycline-gentamicin combinations against MDR Citrobacter freundii may be future therapeutic alternatives. , Thesis (MSci) -- Faculty of Science and Agriculture, 2023
- Full Text:
- Authors: Fadare, Folake Temitope https://orcid.org/0000-0001-5779-9798
- Date: 2023
- Subjects: Enterobacteriaceae , Molecular microbiology , Enterobacteria
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/27809 , vital:69942
- Description: Globally, the increasing rate of antimicrobial resistance against our currently available drugs has been a serious public concern. Due to the selective nature of antibiotics, bacteria are expected to develop resistance against them over time, but the current scourge of antimicrobial resistance is aggravated by factors other than the expected evolutionary trend. The use and overuse of antibiotics in clinical and agricultural contexts have led to the fast rise of multidrug-resistant MDR microorganisms. A scenario that necessitates an upsurge in the clinical failures observed with our current drug arsenals is expected to rise if left unchecked. One of the significant drivers implicated in the spread of antimicrobial resistance genes is the integrons. These are mobile genetic elements found on pathogenicity islands, transposons, and plasmids, easing their distribution among various bacteria. They are considered efficient gene expression systems that naturally capture, integrate gene cassettes GCs and immediately express the captured antimicrobial resistance genes on the GCs due to the inherent promoters on their structures. Integrons have been known to confer resistance against most classes of antibiotics. These include all known β-lactams, chloramphenicol, trimethoprim, erythromycin, aminoglycosides, quinolones, streptothricin, lincomycin, rifampicin, fosfomycin, and antiseptics of the quaternary ammonium compound family. They have been detected in bacterial populations under direct or indirect antibiotic pressure in clinical, agricultural, and environmental contexts. The emergence of MDR in Enterobacteriaceae is a critical public health issue that has attracted the World Health Organization WHO, which classified them as one of the critical priority pathogens urgently requiring new antibiotics. The resistance phenomenon has proven most of the current antibiotics ineffective, further compounded by the slow pace of the discovery of new antibiotics, necessitating the hunt for new, practical remedies. One of such is the exploration of synergy among existing antibiotics. Two medications combined have a higher impact, thereby allowing current antibiotics to be salvaged for use in treating MDR bacteria, even if the bacteria are resistant against one or both antibiotics separately. Hence, this research focused on the occurrence and prevalence of multidrug resistance and the characterization of integrons and their associated gene cassettes in members of Enterobacteriaceae, including Klebsiella pneumoniae, Klebsiella oxytoca, Enterobacter cloacae, Escherichia coli, and Citrobacter spp. recovered from animal droppings, rivers, and effluents of hospital and wastewater treatment plants in Eastern Cape Province, South Africa. The inhibitory effect of combining two drugs belonging to different antibiotic classes to obtain a possible potentiating effect against some multidrug-resistant Enterobacteriaceae isolates harbouring integrons were examined and studied. The isolates were identified using the conventional molecular Polymerase Chain Reaction with specific primers. The antimicrobial resistance profile and the production of Extended-spectrum and metallo β-lactamase were detected using disk diffusion technique DDT, double-disk synergy test DDST, and ethylenediaminetetraacetic acid EDTA tests, respectively. The PCR-based screening method, DNA sequencing analyses, and restriction fragment length polymorphism RFLP were used to characterize the integrons and their associated GCs. Furthermore, Enterobacterial Repetitive Intergenic Consensus ERIC PCR determined the genotypic relationships between some specific species. The various antibiotics' minimum inhibitory concentration MIC was determined using the broth microdilution, while the checkerboard method was used to determine the fractional inhibitory concentration indices FICIs. The time-kill assays TKAs were further used to confirm the synergism observed from the checkerboard assays. Most of the isolates were resistant against most antibiotics tested and were considered MDR. The least resistance was observed against imipenem, a carbapenem, one of the drugs of last resort. Also present were the ESBL and MBL producers, with a few isolates co-producing the enzymes. A high prevalence of integrons was observed in the isolates, with class 1 integrons being the most frequently detected. Some isolates co-harboured the intI1 and intI2 genes and were classified as class1 plus 2 integrons. Although Citrobacter spp. had the least number of isolates among the Enterobacteriaceae studied, it harboured the most diverse gene cassette arrays. The various gene cassette arrays were identified as follows: For Klebsiella spp. Aac 6 Ib, aadA1 dfrA1, and dfrA1 sat2; for Citrobacter spp., dfrA5 aac3 Ib, aac6 ib, aadA1dfrA1 aadA1, aadA1-dfrA1, aadA5 dfrA17, and dfrA21-aac3-Ib; for E. coli dfrA21- aac-3-Ib, dfrA5-aac-3-Ib, aadA1 dfrA1, and aadA5 dfrA17 and for E. cloacae aadA1 dfrA1, dfrA7 dfrA21 dfrA5 aac 3 Ib, and dfrA1 sat2. The GC array dfrA1 sat2 was the only array detected in class 2 integrons which are analogous to that found in Tn7, dfrA1-sat2-aadA1, with the deletion of the last GC aadA1. These detected GCs confer resistance against aminoglycosides, including streptomycin and spectinomycin, and trimethoprim, further increasing the resistance spectrum of the bacterial species harbouring them. The detection of integrons and their associated GC and the presence of these β-lactamases is also associated with coresistance against other classes of antibiotics by bacterial species harbouring them, further limiting treatment options. The checkerboard assays combining antibiotics against these drug-resistant integron harbouring Enterobacteriaceae revealed that 26.3 percent 10 over 38 of the interactions were categorized as synergistic, while 73.7 percent 28 over 38 were indifferent. None of the combinations was antagonistic. The TKAs revealed all the synergistic interactions as bactericidal. Therefore, the combinations of gentamicin with tetracycline, ciprofloxacin, and ceftazidime against Multidrug-resistant MDR Klebsiella pneumoniae; tetracycline-ceftazidime combination against MDR Escherichia coli, colistin combinations with ceftazidime and gentamicin, and tetracycline-gentamicin combinations against MDR Citrobacter freundii may be future therapeutic alternatives. , Thesis (MSci) -- Faculty of Science and Agriculture, 2023
- Full Text:
Prevalence and seasonal changes of gastro-intestinal parasites of ovine on three different veld types in communal farming areas of the Eastern Cape Province, South Africa
- Jansen, Mlungisi Selby https://orcid.org/0000-0002-6735-1054
- Authors: Jansen, Mlungisi Selby https://orcid.org/0000-0002-6735-1054
- Date: 2023
- Subjects: Gastrointestinal system , Parasites , Traditional farming
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/28233 , vital:73956
- Description: The current study aimed to investigate the prevalence and seasonal changes of gastro-intestinal parasites GIP of ovine grazed don three different veld types in the communal farming areas of the Eastern Cape Province. A total of 1242 sheep faecal samples were collected monthly between January 2012 and December 2015 to investigate the prevalence and season occurrence of internal parasites. From September to November 2018, a semi-structured questionnaire survey was conducted in three agro-ecological zones, humid Wartburg, semi-humid Allen waters, and arid region Cradock commonages to investigate farmers’ knowledge of the prevalence and occurrence of GIP in sheep. The prevalence of gastro-intestinal parasites was significantly higher in the humid zone roundworms 81 percent and coccidia 37 percent, followed by the semi-humid zone roundworms 75 percent and coccidia 22 percent and the arid zone was the lowest roundworms 71 percent and coccidia 14 percent. Roundworms had significantly higher counts P 0.05 mostly in hot-wet seasons of the year spring and summer and low during dry cold months of the year autumn and winter across all veld types. The humid zone had significantly higher counts P 0.05 in the seasonal occurrence of roundworms and coccidia, followed by humid zone, and very low counts were encountered in the arid zone during the study period. Seasonal occurrence of roundworm species was significant across all veld types, 64 percent of farmers were males and 36 percent were females. The study reveals that helminths and coccidia are major causative agents causing parasitic infections in livestock production, and therefore, good animal health practices management practices including proper hygiene should be followed to prevent parasitic infection in small ruminants. , Thesis (MSc) -- Faculty of Science and Agriculture, 2023
- Full Text:
- Authors: Jansen, Mlungisi Selby https://orcid.org/0000-0002-6735-1054
- Date: 2023
- Subjects: Gastrointestinal system , Parasites , Traditional farming
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/28233 , vital:73956
- Description: The current study aimed to investigate the prevalence and seasonal changes of gastro-intestinal parasites GIP of ovine grazed don three different veld types in the communal farming areas of the Eastern Cape Province. A total of 1242 sheep faecal samples were collected monthly between January 2012 and December 2015 to investigate the prevalence and season occurrence of internal parasites. From September to November 2018, a semi-structured questionnaire survey was conducted in three agro-ecological zones, humid Wartburg, semi-humid Allen waters, and arid region Cradock commonages to investigate farmers’ knowledge of the prevalence and occurrence of GIP in sheep. The prevalence of gastro-intestinal parasites was significantly higher in the humid zone roundworms 81 percent and coccidia 37 percent, followed by the semi-humid zone roundworms 75 percent and coccidia 22 percent and the arid zone was the lowest roundworms 71 percent and coccidia 14 percent. Roundworms had significantly higher counts P 0.05 mostly in hot-wet seasons of the year spring and summer and low during dry cold months of the year autumn and winter across all veld types. The humid zone had significantly higher counts P 0.05 in the seasonal occurrence of roundworms and coccidia, followed by humid zone, and very low counts were encountered in the arid zone during the study period. Seasonal occurrence of roundworm species was significant across all veld types, 64 percent of farmers were males and 36 percent were females. The study reveals that helminths and coccidia are major causative agents causing parasitic infections in livestock production, and therefore, good animal health practices management practices including proper hygiene should be followed to prevent parasitic infection in small ruminants. , Thesis (MSc) -- Faculty of Science and Agriculture, 2023
- Full Text:
The dynamics in implementing Inclusive Education in South Africa: Case studies of four Primary Schools in KwaZulu-Natal
- Authors: Nzuza, Zakhele Dennis
- Date: 2023
- Subjects: Inclusive education
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/26219 , vital:64974
- Description: The study explored the implemention of inclusive education in primary schools in the uMgungundlovu area, in the province of KwaZulu-Natal, South Africa. Locally and globally, the notion of inclusive education has presented various difficulties relating to the understanding stakeholders have of inclusive education and also in terms of embracing it and implementing it in schools. Stakeholders in South Africa have experienced similar challenges regarding a clear and common understanding of inclusive education and ensuring effective implementation. Despite various reforms adopted by the South African government, learners experiencing barriers to learning have persistently suffered inadequate access to quality education and equal learning opportunities. The reviewed literature has highlighted numerous challenges that have constrained effective implementation of inclusive education in South African schools. The reviewed literature also indicated that some teachers had negative attitudes towards inclusive education, and that such attitudes were linked to the lack of clear understanding of what inclusive education was about. At the core of this study is the fact that very little is known in South Africa about the implementation of inclusive education. Therefore, this study sought to unravel how chools implement inclusive education and, in that process, contribute to a deeper understanding of this phenomenon. The study utilised the Theory of Planned Behaviour as a theoretical framework and inclusive pedagogy as a conceptual framework to explore the implementation of inclusive education in four study schools. A qualitative approach underpinned by an interpretive research paradigm was adopted. Purposive sampling techniques were used to select twenty educators, four learners experiencing barriers to learning and four parents of learners experiencing barriers to learning to participate in this study. Four techniques were used to produce qualitative data, namely, semi-structured interviews, observations, documents’ review, and focus group discussions. Semi-structured interviews with educators and learners experiencing barriers to learning were utilised to generate data in the four selected primary schools. In addition to semi structured interviews, learners were also observed during lessons. Relevant documents kept in the schools were also reviewed to augment data generated through interviews. Focus group discussions were held with four parents of the learners experiencing barriers to learning. Data were analysed employing qualitative content analysis to come up with themes. The findings revealed that there was no common understanding amongst the teachers about what constituted inclusive education. Most educators understood inclusive education as referring to accommodating all learners in the classroom to reach their potential. These educators would help all learners, including those with barriers to learning thus contributing to the implementation of inclusive education in their schools. However, the findings also revealed that some educators understood inclusive education as referring to a situation where all learners received quality education, but those with barriers to learning being accommodated in special schools or special classrooms separate from their counterparts. The findings indicated that there was a lack of knowledge about inclusive education and such a lack contributed to misunderstandings about the essence of inclusive education. In addition, teachers lacked skills in dealing with learners experiencing barriers to learning, resulting in inefficient and ineffective implementation of inclusive education. It was evident from the findings that the curriculum was inflexible and the teachers lacked capacity to customise the content to the needs of all the learners, especially those experiencing learning barriers. Therefore, for teachers to implement inclusive education, it was necessary that content had to be flexible to meet the educational needs of all learners. The findings further revealed that using various teaching methods, such as visual objects and demonstrations was helpful in adapting the rigid curriculum and making it user friendly for learners experiencing barriers to learning. In addition, the research findings revealed that group work and peer learning assisted educators to implement inclusive education. Research findings also revealed that implementing inclusive education was hindered by various systematic factors, such as lack of parental support, overcrowding in classrooms, and socioeconomic challenges. I concluded that there is a remarkable knowledge deficit that can be addressed by training, including pre-service and ongoing professional development activities for teachers. I can also conclude that based on the findings educators require training on inclusive education, beginning with teachers currently in the system. The training can then be included in the curriculum of pre-service educators so that they can obtain a clear understanding of inclusive education and thus develop positive attitudes towards inclusive education. Similarly, school management teams require training on their own so that they can be able to provide adequate and effective support to the teachers in the classrooms. Another recommendation is that educators should be capacitated and developed in inclusive education to enhance their confidence in delivering the curriculum and to handle learners experiencing barriers to learning. Similarly, it is recommended that there be a collaboration between schools, homes, and other stakeholders to assist learners experiencing barriers to learning on their education journey, thus effectively implementing inclusive education in schools. Finally, a model for the improvement of inclusive education is proposed. , Thesis (PhD) -- Faculty of Education, 2023
- Full Text:
- Authors: Nzuza, Zakhele Dennis
- Date: 2023
- Subjects: Inclusive education
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/26219 , vital:64974
- Description: The study explored the implemention of inclusive education in primary schools in the uMgungundlovu area, in the province of KwaZulu-Natal, South Africa. Locally and globally, the notion of inclusive education has presented various difficulties relating to the understanding stakeholders have of inclusive education and also in terms of embracing it and implementing it in schools. Stakeholders in South Africa have experienced similar challenges regarding a clear and common understanding of inclusive education and ensuring effective implementation. Despite various reforms adopted by the South African government, learners experiencing barriers to learning have persistently suffered inadequate access to quality education and equal learning opportunities. The reviewed literature has highlighted numerous challenges that have constrained effective implementation of inclusive education in South African schools. The reviewed literature also indicated that some teachers had negative attitudes towards inclusive education, and that such attitudes were linked to the lack of clear understanding of what inclusive education was about. At the core of this study is the fact that very little is known in South Africa about the implementation of inclusive education. Therefore, this study sought to unravel how chools implement inclusive education and, in that process, contribute to a deeper understanding of this phenomenon. The study utilised the Theory of Planned Behaviour as a theoretical framework and inclusive pedagogy as a conceptual framework to explore the implementation of inclusive education in four study schools. A qualitative approach underpinned by an interpretive research paradigm was adopted. Purposive sampling techniques were used to select twenty educators, four learners experiencing barriers to learning and four parents of learners experiencing barriers to learning to participate in this study. Four techniques were used to produce qualitative data, namely, semi-structured interviews, observations, documents’ review, and focus group discussions. Semi-structured interviews with educators and learners experiencing barriers to learning were utilised to generate data in the four selected primary schools. In addition to semi structured interviews, learners were also observed during lessons. Relevant documents kept in the schools were also reviewed to augment data generated through interviews. Focus group discussions were held with four parents of the learners experiencing barriers to learning. Data were analysed employing qualitative content analysis to come up with themes. The findings revealed that there was no common understanding amongst the teachers about what constituted inclusive education. Most educators understood inclusive education as referring to accommodating all learners in the classroom to reach their potential. These educators would help all learners, including those with barriers to learning thus contributing to the implementation of inclusive education in their schools. However, the findings also revealed that some educators understood inclusive education as referring to a situation where all learners received quality education, but those with barriers to learning being accommodated in special schools or special classrooms separate from their counterparts. The findings indicated that there was a lack of knowledge about inclusive education and such a lack contributed to misunderstandings about the essence of inclusive education. In addition, teachers lacked skills in dealing with learners experiencing barriers to learning, resulting in inefficient and ineffective implementation of inclusive education. It was evident from the findings that the curriculum was inflexible and the teachers lacked capacity to customise the content to the needs of all the learners, especially those experiencing learning barriers. Therefore, for teachers to implement inclusive education, it was necessary that content had to be flexible to meet the educational needs of all learners. The findings further revealed that using various teaching methods, such as visual objects and demonstrations was helpful in adapting the rigid curriculum and making it user friendly for learners experiencing barriers to learning. In addition, the research findings revealed that group work and peer learning assisted educators to implement inclusive education. Research findings also revealed that implementing inclusive education was hindered by various systematic factors, such as lack of parental support, overcrowding in classrooms, and socioeconomic challenges. I concluded that there is a remarkable knowledge deficit that can be addressed by training, including pre-service and ongoing professional development activities for teachers. I can also conclude that based on the findings educators require training on inclusive education, beginning with teachers currently in the system. The training can then be included in the curriculum of pre-service educators so that they can obtain a clear understanding of inclusive education and thus develop positive attitudes towards inclusive education. Similarly, school management teams require training on their own so that they can be able to provide adequate and effective support to the teachers in the classrooms. Another recommendation is that educators should be capacitated and developed in inclusive education to enhance their confidence in delivering the curriculum and to handle learners experiencing barriers to learning. Similarly, it is recommended that there be a collaboration between schools, homes, and other stakeholders to assist learners experiencing barriers to learning on their education journey, thus effectively implementing inclusive education in schools. Finally, a model for the improvement of inclusive education is proposed. , Thesis (PhD) -- Faculty of Education, 2023
- Full Text:
The impact of fiscal and monetary policies on manufacturing sector performance in South Africa
- Authors: Hunter, Desireѐ
- Date: 2023
- Subjects: Manufacturing industries -- South Africa , Fiscal policy -- South Africa , Monetary policy -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/28549 , vital:74417
- Description: Regulatory authorities have to date utilised a strategic blend of fiscal and monetary policies in dealing with the unique set of macroeconomic conditions facing South Africa. Government policy intervention has significant implications for economic growth and output within the manufacturing environment. Heterogeneity has also been discerned in relation to the responsiveness of various industries within the manufacturing sector towards both fiscal and monetary policy variable variations. However, given weakened growth prospects, policy alignment issues have been observed. The purpose of this study was firstly, to examine the impact of fiscal and monetary variables on manufacturing sector output in South Africa and secondly, to analyse the manufacturing industry significance of the various monetary transmission mechanism channels. The study made use of quarterly and monthly data to achieve these stated objectives, dated between 1998 and 2020. To achieve the first objective, the study employed the Autoregressive Distributed Lag (ARDL) model given the order of integration of the variables. The empirical results revealed significant, positive relations between tax revenue, deficit financing, nominal effective exchange rate (NEER) and money supply (M3) for total manufacturing (LTOTAL). Contrastingly, there were negative links between LTOTAL, government spending and the lending rate. At a disaggregated industry level, there were positive relations with tax revenue in food and wood industries, although tax revenue was significantly negative for metals. Likewise, to LTOTAL, linkages with spending were significantly negative for wood and metal industries but positive for chemicals. Negative spending signage could be a result of crowding-out. For deficit financing, positive associations within chemicals did not conform to expectations. Similarly, to LTOTAL, wood and metal industries conformed to expectations of negative relations with the lending rate. In respect of the NEER in food and wood production, significant, positive links were established. Contrastingly, a negative linkage existed for chemical activities at the 5% level. Concerning M3 and akin to LTOTAL, the relation with metal industries was positive. However, negative findings for food and chemicals contradicted expectations, suggesting money supply was not efficiently utilised in managing monetary variables in the long-term. The second objective of the study focused on analysing manufacturing industry significance of the various monetary transmission mechanism channels. The Vector Error Correction Model (VECM) were employed to analyse the relationship between the variables. Impulse response and variance decomposition were also constructed to further trace which channel is more significant in influencing manufacturing output. The empirical results revealed that the interest rate channel occupied a relatively significant role in both LTOTAL and several selected manufacturing industries. Shocks accounted for 9.71%, 11.96% and 14.28% of the variance in LTOTAL, metal and chemical industries. The asset price channel also appeared relatively significant, with shocks to the FTSE/JSE all-share index explaining 18.21% and 21.13% of the variation in food and wood production, signifying the most relevant channel for these particular industries and representing the second most important channel for LTOTAL and the other remaining industries. The exchange rate channel also presented as being a more relevant channel for food and wood, but occupied little role in LTOTAL, whilst the credit channel was relatively ineffectual for both LTOTAL and all industries examined. The results obtained imply that government should exercise caution and demonstrate fiscal restraint and that the South African Reserve Bank (SARB) need to take greater consideration of output fluctuations in monetary policy setting. Research has dictated that an expansionary fiscal policy is generally required as a means to achieving increased growth. However, findings obtained at both the aggregate and disaggregated manufacturing level in South Africa largely varied. This implies significant heterogeneity within the South African manufacturing sector in respect of fiscal policy responses. Expansionary fiscal stimulus packages need to be better targeted towards industries that will most benefit. Similarly, monetary policy responses at the aggregate and disaggregated manufacturing level in South Africa were heterogeneous and furthermore, differed when examining combined policy impacts. There was also a heterogeneous response with respect to relevance of the channels, via which monetary policy operated, with the interest rate channel dominating. SARB do take into consideration output fluctuations in policy setting but this is not currently emphasised or legislated. , Thesis (DCom) -- Faculty of Management and Commerce, 2023
- Full Text:
- Authors: Hunter, Desireѐ
- Date: 2023
- Subjects: Manufacturing industries -- South Africa , Fiscal policy -- South Africa , Monetary policy -- South Africa
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/28549 , vital:74417
- Description: Regulatory authorities have to date utilised a strategic blend of fiscal and monetary policies in dealing with the unique set of macroeconomic conditions facing South Africa. Government policy intervention has significant implications for economic growth and output within the manufacturing environment. Heterogeneity has also been discerned in relation to the responsiveness of various industries within the manufacturing sector towards both fiscal and monetary policy variable variations. However, given weakened growth prospects, policy alignment issues have been observed. The purpose of this study was firstly, to examine the impact of fiscal and monetary variables on manufacturing sector output in South Africa and secondly, to analyse the manufacturing industry significance of the various monetary transmission mechanism channels. The study made use of quarterly and monthly data to achieve these stated objectives, dated between 1998 and 2020. To achieve the first objective, the study employed the Autoregressive Distributed Lag (ARDL) model given the order of integration of the variables. The empirical results revealed significant, positive relations between tax revenue, deficit financing, nominal effective exchange rate (NEER) and money supply (M3) for total manufacturing (LTOTAL). Contrastingly, there were negative links between LTOTAL, government spending and the lending rate. At a disaggregated industry level, there were positive relations with tax revenue in food and wood industries, although tax revenue was significantly negative for metals. Likewise, to LTOTAL, linkages with spending were significantly negative for wood and metal industries but positive for chemicals. Negative spending signage could be a result of crowding-out. For deficit financing, positive associations within chemicals did not conform to expectations. Similarly, to LTOTAL, wood and metal industries conformed to expectations of negative relations with the lending rate. In respect of the NEER in food and wood production, significant, positive links were established. Contrastingly, a negative linkage existed for chemical activities at the 5% level. Concerning M3 and akin to LTOTAL, the relation with metal industries was positive. However, negative findings for food and chemicals contradicted expectations, suggesting money supply was not efficiently utilised in managing monetary variables in the long-term. The second objective of the study focused on analysing manufacturing industry significance of the various monetary transmission mechanism channels. The Vector Error Correction Model (VECM) were employed to analyse the relationship between the variables. Impulse response and variance decomposition were also constructed to further trace which channel is more significant in influencing manufacturing output. The empirical results revealed that the interest rate channel occupied a relatively significant role in both LTOTAL and several selected manufacturing industries. Shocks accounted for 9.71%, 11.96% and 14.28% of the variance in LTOTAL, metal and chemical industries. The asset price channel also appeared relatively significant, with shocks to the FTSE/JSE all-share index explaining 18.21% and 21.13% of the variation in food and wood production, signifying the most relevant channel for these particular industries and representing the second most important channel for LTOTAL and the other remaining industries. The exchange rate channel also presented as being a more relevant channel for food and wood, but occupied little role in LTOTAL, whilst the credit channel was relatively ineffectual for both LTOTAL and all industries examined. The results obtained imply that government should exercise caution and demonstrate fiscal restraint and that the South African Reserve Bank (SARB) need to take greater consideration of output fluctuations in monetary policy setting. Research has dictated that an expansionary fiscal policy is generally required as a means to achieving increased growth. However, findings obtained at both the aggregate and disaggregated manufacturing level in South Africa largely varied. This implies significant heterogeneity within the South African manufacturing sector in respect of fiscal policy responses. Expansionary fiscal stimulus packages need to be better targeted towards industries that will most benefit. Similarly, monetary policy responses at the aggregate and disaggregated manufacturing level in South Africa were heterogeneous and furthermore, differed when examining combined policy impacts. There was also a heterogeneous response with respect to relevance of the channels, via which monetary policy operated, with the interest rate channel dominating. SARB do take into consideration output fluctuations in policy setting but this is not currently emphasised or legislated. , Thesis (DCom) -- Faculty of Management and Commerce, 2023
- Full Text:
The mediation of knowledge-based dynamic capabilities on the relationship between small business human resource management practices and performance
- Authors: Goon, D M
- Date: 2023
- Subjects: Small business -- Personnel management , Organizational effectiveness -- Measurement , Performance -- Measurement
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29440 , vital:77967
- Description: Small businesses play an important role in the growth and success of local economies worldwide. Regrettably, the persistent issue of small business failure stems from external and internal challenges. One of the most important internal challenges is the lack of knowledge required to configure a small business to sustain performance in a dynamic environment. The business's dynamic capabilities and human resource management are vital aspects. This study investigated the mediating role of knowledge-based dynamic capabilities in the relationship between human resource management practices in small businesses, using the AMO framework, and small business performance. The research employed a quantitative approach, utilising convenience and snowball sampling techniques. It yielded valid responses from 231 small businesses in the Eastern Cape region. Statistical analysis was conducted using SPSS version 27 and AMOS version 22. The relationships were tested using the Person correlation coefficient, while simple regression models were used to test the influence of the variables within the study hypotheses. To examine the mediating effect, the Hayes Process Macro was utilised. The analysis unveiled positive and significant relationships between human resource management practices and knowledge-based dynamic capabilities with performance in small businesses. Knowledge-based dynamic capabilities and all its subcomponents also mediated the relationship between all dimensions of small business human resource management practices and performance. The implication of these findings highlights the urgent attention small businesses should give towards human resource management practices and building knowledge-based dynamic capabilities. These findings also alert policymakers and small business managers to what aspects of human resource management practices and knowledge-based dynamic capabilities should be prioritised for optimal performance in small businesses. , Thesis (MBM) -- Faculty of Management and Commerce, 2023
- Full Text:
- Authors: Goon, D M
- Date: 2023
- Subjects: Small business -- Personnel management , Organizational effectiveness -- Measurement , Performance -- Measurement
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29440 , vital:77967
- Description: Small businesses play an important role in the growth and success of local economies worldwide. Regrettably, the persistent issue of small business failure stems from external and internal challenges. One of the most important internal challenges is the lack of knowledge required to configure a small business to sustain performance in a dynamic environment. The business's dynamic capabilities and human resource management are vital aspects. This study investigated the mediating role of knowledge-based dynamic capabilities in the relationship between human resource management practices in small businesses, using the AMO framework, and small business performance. The research employed a quantitative approach, utilising convenience and snowball sampling techniques. It yielded valid responses from 231 small businesses in the Eastern Cape region. Statistical analysis was conducted using SPSS version 27 and AMOS version 22. The relationships were tested using the Person correlation coefficient, while simple regression models were used to test the influence of the variables within the study hypotheses. To examine the mediating effect, the Hayes Process Macro was utilised. The analysis unveiled positive and significant relationships between human resource management practices and knowledge-based dynamic capabilities with performance in small businesses. Knowledge-based dynamic capabilities and all its subcomponents also mediated the relationship between all dimensions of small business human resource management practices and performance. The implication of these findings highlights the urgent attention small businesses should give towards human resource management practices and building knowledge-based dynamic capabilities. These findings also alert policymakers and small business managers to what aspects of human resource management practices and knowledge-based dynamic capabilities should be prioritised for optimal performance in small businesses. , Thesis (MBM) -- Faculty of Management and Commerce, 2023
- Full Text:
The nature of competition in the banking sector and its effect on financial inclusion in South Africa
- Ngonyama, Nomasomi https://orcid.org/0000-0002-7536-9297
- Authors: Ngonyama, Nomasomi https://orcid.org/0000-0002-7536-9297
- Date: 2023
- Subjects: Banks and banking -- South Africa , Competition -- South Africa , Financial services industry
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/28661 , vital:74492
- Description: Competition and access to financial services are lauded as key ingredients in the fight against poverty. While competition enhances markets, fosters innovation, productivity and growth, financial inclusion allows the poor to save, access credit and insurance thereby allowing them to meaningfully contribute to economic growth and also smooth their consumption. Moreover, competition reduces the cost of finance, thereby further expanding the availability of financial services. This suggests an important relationship between competition in the banking sector and financial inclusion. Research in this area is still in its infancy and little consensus exists on both whether the relationship is a robust one or not. There is no unanimity on the direction of causality or whether competition in the financial sector is good or bad for markets. This study examines the nexus between banking competition and financial inclusion in Upper-middle income countries. It employed a panel data set over the period 2011-2017 and Generalized Methods of Moments technique was employed to answer this enquiry. The findings of this study suggest that market power is not bad for financial inclusion in upper-middle income countries. Moreover, the study found that bank competition does not matter in banking the unbanked population in Upper-middle income countries. The implication of the findings of this study is that the focus of the policy makers should not be on policies that reduces concentration and market power in the banking sector, but be on measures that encourages contestability. The threat of entry is sufficient to make banks behave in a competitive manner. , Thesis (PhD) -- Faculty of Management and Commerce, 2023
- Full Text:
- Authors: Ngonyama, Nomasomi https://orcid.org/0000-0002-7536-9297
- Date: 2023
- Subjects: Banks and banking -- South Africa , Competition -- South Africa , Financial services industry
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/28661 , vital:74492
- Description: Competition and access to financial services are lauded as key ingredients in the fight against poverty. While competition enhances markets, fosters innovation, productivity and growth, financial inclusion allows the poor to save, access credit and insurance thereby allowing them to meaningfully contribute to economic growth and also smooth their consumption. Moreover, competition reduces the cost of finance, thereby further expanding the availability of financial services. This suggests an important relationship between competition in the banking sector and financial inclusion. Research in this area is still in its infancy and little consensus exists on both whether the relationship is a robust one or not. There is no unanimity on the direction of causality or whether competition in the financial sector is good or bad for markets. This study examines the nexus between banking competition and financial inclusion in Upper-middle income countries. It employed a panel data set over the period 2011-2017 and Generalized Methods of Moments technique was employed to answer this enquiry. The findings of this study suggest that market power is not bad for financial inclusion in upper-middle income countries. Moreover, the study found that bank competition does not matter in banking the unbanked population in Upper-middle income countries. The implication of the findings of this study is that the focus of the policy makers should not be on policies that reduces concentration and market power in the banking sector, but be on measures that encourages contestability. The threat of entry is sufficient to make banks behave in a competitive manner. , Thesis (PhD) -- Faculty of Management and Commerce, 2023
- Full Text:
The perceptions of teachers about the effectiveness and efficiency of e-learning in rural schools in the Eastern Cape during COVID-19
- September, Khanyile https://orcid.org/0000-0002-0354-3188
- Authors: September, Khanyile https://orcid.org/0000-0002-0354-3188
- Date: 2023
- Subjects: Distance education -- South Africa , Rural schools -- Effect of technological innovations on
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29540 , vital:77976
- Description: The digital gap has been hitting rural schools across the world. This has also been witnessed in South Africa. This digital gap is a result of inequality amongst households. Hence, learners and teachers from rural schools cannot access technologies as urban learners and teachers do. This situation has caused a lack of connectivity, lack of information about ICT, lack of resources, and lack of skilled teachers in rural schools. Globally, almost all countries have shifted to do things online. However, some countries struggled to shift successfully such as India. The introduction of elearning in South African government schools was done with the aim of improving results performance and to develop skills in learners and allow a flexible learning environment. In some urban and semi-urban areas, teachers are able to use new technologies to teach; however, rural teachers are bound to use traditional teaching only. The problem actually surfaced when the new pandemic known as COVID-19 started in Wuhan, China, in 2019 and spread across the world. This also affected the South African education systems, where teachers and learners were ordered to stay away from school premises and institutions, as way of preventing the virus from spreading. Rural teachers could not perform any academic activities, like urban schools did, to reach out to their learners as they wished because of the challenges stated above. Using e-learning during the 2020 pandemic was an unending nightmare for these rural teachers as they faced more challenges than those that had existed prior to COVID-19. The identified challenges discussed in this paper are those that were experienced by Alfred Nzo district teachers. This paper also refers to how e-learning was used by these teachers. Challenges identified in the literature were addressed through guidance of the UTUAT model which was adopted for the study. Each problem was categorised in line with UTUAT model four construct. The two branches of philosophies were brought in which are ontology and epistemology. Ontology asks question about the reality or existence of something and epistemology asks question about proving he existence of something. This study adopted the qualitative approach and followed that approach in terms of research paradigm, data sampling, data collection and analysis and techniques. Interviews were conducted with 15 teachers (teachers, head of department, school principal and subject advisor) from high and primary school levels, after the consent forms had been issued to obtain permission to proceed with interviews. Notes and audio recordings were made use of during interview sessions for data analysis purposes, with NVivo being used to analyse the data. Form the issues identified, these are the themes that were created which are:poor understanding of the concept “e-learning” by rural educators, high levels of resistance from educators, pedagogy of educators, insufficient support of the concept “e-learning”, poor implementation of e-learning. Lastly, after the data had been collected and analysed, this study developed five new success factors that should be implemented by the Department of Basic Education (DBE) to address issues identified as themes after thorough analysis of the literature and interviews. , Thesis (MIS) -- Faculty of Management and Commerce, 2023
- Full Text:
- Authors: September, Khanyile https://orcid.org/0000-0002-0354-3188
- Date: 2023
- Subjects: Distance education -- South Africa , Rural schools -- Effect of technological innovations on
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29540 , vital:77976
- Description: The digital gap has been hitting rural schools across the world. This has also been witnessed in South Africa. This digital gap is a result of inequality amongst households. Hence, learners and teachers from rural schools cannot access technologies as urban learners and teachers do. This situation has caused a lack of connectivity, lack of information about ICT, lack of resources, and lack of skilled teachers in rural schools. Globally, almost all countries have shifted to do things online. However, some countries struggled to shift successfully such as India. The introduction of elearning in South African government schools was done with the aim of improving results performance and to develop skills in learners and allow a flexible learning environment. In some urban and semi-urban areas, teachers are able to use new technologies to teach; however, rural teachers are bound to use traditional teaching only. The problem actually surfaced when the new pandemic known as COVID-19 started in Wuhan, China, in 2019 and spread across the world. This also affected the South African education systems, where teachers and learners were ordered to stay away from school premises and institutions, as way of preventing the virus from spreading. Rural teachers could not perform any academic activities, like urban schools did, to reach out to their learners as they wished because of the challenges stated above. Using e-learning during the 2020 pandemic was an unending nightmare for these rural teachers as they faced more challenges than those that had existed prior to COVID-19. The identified challenges discussed in this paper are those that were experienced by Alfred Nzo district teachers. This paper also refers to how e-learning was used by these teachers. Challenges identified in the literature were addressed through guidance of the UTUAT model which was adopted for the study. Each problem was categorised in line with UTUAT model four construct. The two branches of philosophies were brought in which are ontology and epistemology. Ontology asks question about the reality or existence of something and epistemology asks question about proving he existence of something. This study adopted the qualitative approach and followed that approach in terms of research paradigm, data sampling, data collection and analysis and techniques. Interviews were conducted with 15 teachers (teachers, head of department, school principal and subject advisor) from high and primary school levels, after the consent forms had been issued to obtain permission to proceed with interviews. Notes and audio recordings were made use of during interview sessions for data analysis purposes, with NVivo being used to analyse the data. Form the issues identified, these are the themes that were created which are:poor understanding of the concept “e-learning” by rural educators, high levels of resistance from educators, pedagogy of educators, insufficient support of the concept “e-learning”, poor implementation of e-learning. Lastly, after the data had been collected and analysed, this study developed five new success factors that should be implemented by the Department of Basic Education (DBE) to address issues identified as themes after thorough analysis of the literature and interviews. , Thesis (MIS) -- Faculty of Management and Commerce, 2023
- Full Text:
The role of risky cyber-security behaviours on effective utilisation of high-performance computing systems in historically disadvantaged institutions
- Authors: Skritshi, Caron
- Date: 2023
- Subjects: Computer security -- South Africa , High performance computing -- Evaluation -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29555 , vital:77983
- Description: This research study explores the impact of risky cybersecurity behaviours on effectively utilising High-Performance Computing Systems within Historically Disadvantaged Institutions in South Africa. The investigation utilises the Theory of Planned Behaviour and the Security Behaviour Intentions Scale to examine the attitudes, intentions, and actual usage patterns of High-Performance Computing Systems among students and staff members. Following the positivism paradigm, this study formulated hypotheses aimed at achieving the objectives. The research sample comprised of 306 users of High-Performance Computing systems selected through the convenience sampling. Employing a quantitative approach, the study used a crosssectional survey research design to collect and analyse data to achieve the study's objectives. The study's findings revealed a significant negative relationship between risky cybersecurity behaviours and attitudes toward High-Performance Computing Systems, highlighting the adverse impact of such behaviours on users' perceptions and acceptance of these systems. However, an insignificant relationship was found between attitudes toward High-Performance Computing Systems and the intention to use them. This suggests that attitudes alone may not substantially influence user behaviour in this context, contradicting the initially proposed relationship. Furthermore, the investigation identified an insignificant correlation between the intention to use High-Performance Computing Systems and the actual utilization of these systems, indicating a gap between intention and behaviour. This implies that the study's hypothesized relationship between these latent variables was not supported. Lastly, a noteworthy correlation emerged between social influence and the effective use of High- Performance Computing Systems, supporting the relationship between these variables. In summary, this research significantly enhances comprehension of the challenges and repercussions associated with cybersecurity behaviour in adopting and utilising High- Performance Computing Systems across five South African Historically Disadvantaged Institutions. It underscores the importance of addressing risky behaviours, enhancing user education, and implementing secure systems. These actions are essential for fostering the effective utilisation of High-Performance Computing Systems and unlocking their potential benefits for economic growth and educational advancements in South Africa. , Thesis (MIS) -- Faculty of Management and Commerce, 2023
- Full Text:
- Authors: Skritshi, Caron
- Date: 2023
- Subjects: Computer security -- South Africa , High performance computing -- Evaluation -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/29555 , vital:77983
- Description: This research study explores the impact of risky cybersecurity behaviours on effectively utilising High-Performance Computing Systems within Historically Disadvantaged Institutions in South Africa. The investigation utilises the Theory of Planned Behaviour and the Security Behaviour Intentions Scale to examine the attitudes, intentions, and actual usage patterns of High-Performance Computing Systems among students and staff members. Following the positivism paradigm, this study formulated hypotheses aimed at achieving the objectives. The research sample comprised of 306 users of High-Performance Computing systems selected through the convenience sampling. Employing a quantitative approach, the study used a crosssectional survey research design to collect and analyse data to achieve the study's objectives. The study's findings revealed a significant negative relationship between risky cybersecurity behaviours and attitudes toward High-Performance Computing Systems, highlighting the adverse impact of such behaviours on users' perceptions and acceptance of these systems. However, an insignificant relationship was found between attitudes toward High-Performance Computing Systems and the intention to use them. This suggests that attitudes alone may not substantially influence user behaviour in this context, contradicting the initially proposed relationship. Furthermore, the investigation identified an insignificant correlation between the intention to use High-Performance Computing Systems and the actual utilization of these systems, indicating a gap between intention and behaviour. This implies that the study's hypothesized relationship between these latent variables was not supported. Lastly, a noteworthy correlation emerged between social influence and the effective use of High- Performance Computing Systems, supporting the relationship between these variables. In summary, this research significantly enhances comprehension of the challenges and repercussions associated with cybersecurity behaviour in adopting and utilising High- Performance Computing Systems across five South African Historically Disadvantaged Institutions. It underscores the importance of addressing risky behaviours, enhancing user education, and implementing secure systems. These actions are essential for fostering the effective utilisation of High-Performance Computing Systems and unlocking their potential benefits for economic growth and educational advancements in South Africa. , Thesis (MIS) -- Faculty of Management and Commerce, 2023
- Full Text:
The Training of pre-service science teachers in the integration of Information and Communication Technology integration in Science teaching: A case of two colleges of education in The Volta Region of Ghana
- Authors: Ofori, Mac-Jones
- Date: 2023
- Subjects: Teachers -- Training of , Science -- Study and teaching , Information technology -- Study and teaching
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/27898 , vital:70467
- Description: The study was carried out to investigate the training of pre-service Science teachers in the integration of Information and Communication Technology (ICT) in Science teaching at two colleges of education in the Volta region of Ghana. The study aimed to recommend a framework that can be used to enhance the training in ICT integration competencies of pre-service Science teachers at colleges of education in the country. The study was underpinned by two theoretical frameworks: Rogan and Grayson’s curriculum implementation framework and Guzman and Nussbaum’s ICT integration framework and was located within the interpretive paradigm. The qualitative research approach was adopted to generate data on the types of ICT integration competences that pre-service Science teachers are trained in, the pedagogical strategies used, the support provided, and the challenges faced during the training. The study adopted the explanatory case study design. Convenience and purposive sampling were used to select the study sites and participants respectively, which consisted of two teacher education colleges, two heads of Science department, ten lecturers, and 20 pre-service Science teachers. The study’s data collection methods were semi-structured face-to-face interviews with the lecturers, focus group discussions with the pre-service Science teachers, non-participatory lesson observation, and document analysis. The data was analysed using thematic approach. The study established that pre-service Science teachers at the two colleges received training in mastering the usage of ICT tools, relating ICT to teaching; using ICT for assessment and providing feedback, creating an appropriate environment for ICT integration, and developing positive attitudes toward ICT usage. The study revealed the pedagogical strategies used for training the pre-service Science teachers in ICT integration competencies to include a standalone ICT course, demonstration, group work, self-learning and how assessment is carried out. The study also established that there was support from both within and without the college environment in training pre-service Science teachers, although this was inadequate. The major challenges found by the study to be hindering effective pre-service teacher training in ICT integration competencies were lack of technical know-how among lecturers, poor pre-service Science teachers’ backgrounds in ICT, inadequate ICT resources and infrastructure, prolonged organisational and management bureaucracy, and insufficient funding of ICT. The recommendations made included the need for upgrading infrastructure in the colleges while also upgrading lecturers’ competencies in handling ICT in the colleges. An alternative training framework for preparing pre-service Science teachers in ICT integration competencies was also proposed. , Thesis (MEd) -- Faculty of Education, 2023
- Full Text:
- Authors: Ofori, Mac-Jones
- Date: 2023
- Subjects: Teachers -- Training of , Science -- Study and teaching , Information technology -- Study and teaching
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/27898 , vital:70467
- Description: The study was carried out to investigate the training of pre-service Science teachers in the integration of Information and Communication Technology (ICT) in Science teaching at two colleges of education in the Volta region of Ghana. The study aimed to recommend a framework that can be used to enhance the training in ICT integration competencies of pre-service Science teachers at colleges of education in the country. The study was underpinned by two theoretical frameworks: Rogan and Grayson’s curriculum implementation framework and Guzman and Nussbaum’s ICT integration framework and was located within the interpretive paradigm. The qualitative research approach was adopted to generate data on the types of ICT integration competences that pre-service Science teachers are trained in, the pedagogical strategies used, the support provided, and the challenges faced during the training. The study adopted the explanatory case study design. Convenience and purposive sampling were used to select the study sites and participants respectively, which consisted of two teacher education colleges, two heads of Science department, ten lecturers, and 20 pre-service Science teachers. The study’s data collection methods were semi-structured face-to-face interviews with the lecturers, focus group discussions with the pre-service Science teachers, non-participatory lesson observation, and document analysis. The data was analysed using thematic approach. The study established that pre-service Science teachers at the two colleges received training in mastering the usage of ICT tools, relating ICT to teaching; using ICT for assessment and providing feedback, creating an appropriate environment for ICT integration, and developing positive attitudes toward ICT usage. The study revealed the pedagogical strategies used for training the pre-service Science teachers in ICT integration competencies to include a standalone ICT course, demonstration, group work, self-learning and how assessment is carried out. The study also established that there was support from both within and without the college environment in training pre-service Science teachers, although this was inadequate. The major challenges found by the study to be hindering effective pre-service teacher training in ICT integration competencies were lack of technical know-how among lecturers, poor pre-service Science teachers’ backgrounds in ICT, inadequate ICT resources and infrastructure, prolonged organisational and management bureaucracy, and insufficient funding of ICT. The recommendations made included the need for upgrading infrastructure in the colleges while also upgrading lecturers’ competencies in handling ICT in the colleges. An alternative training framework for preparing pre-service Science teachers in ICT integration competencies was also proposed. , Thesis (MEd) -- Faculty of Education, 2023
- Full Text:
Umguyo practice and violent crimes in the Amathole District Municipality: a criminological perspective
- Mdlungu, Tandiwe https://orcid.org/0000-0001-7751-3873
- Authors: Mdlungu, Tandiwe https://orcid.org/0000-0001-7751-3873
- Date: 2023
- Subjects: violent crime -- Social aspects , Xhosa (African people) -- Rites and ceremonies , Initiation rites -- Religious aspects
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/29706 , vital:78873
- Description: This study aimed to investigate the factors contributing to the prevalence of violent crimes during the Umguyo practice. This is a traditional ceremony held the night before a Xhosa male adolescent’s Traditional Male Circumcision (TMC) or Ulwaluko. Despite it being a sacred and joyful occasion for the community, parents and initiates, violent crimes such as murder and assault have increased during the Umguyo practice season. They are mostly committed by young adolescent males from different villages as individuals or in large groups. Furthermore, little or no convictions are made for these crimes. The study adopted the Neutralization Theory, Rational and Differential Association Theory to explain the phenomenon of violence during the Umguyo practice. In-depth interviews were conducted with the custodians of knowledge on Umguyo practice, as key informants, in various villages in the Amathole District Municipality in South Africa. The study found that male adolescents use the Umguyo practice as a cover to commit violent crimes and that the following factors played a role: territorial disputes, the lack of significance of the practice to the young boys, excessive alcohol use in the name of culture, and the economic status of the hosting families. The study also revealed that other crimes, such as burglary and livestock theft, increased during the Umguyo practice season. The study recommends that community leaders, such as chiefs, should enforce stricter curfews on the night of the Umguyo practice, strengthen relations between law enforcement and community members to build trust, and encourage more witnesses of crime to come forward. The study also suggests that awareness campaigns should be held in the build-up to the initiation season. This could be beneficial for the criminal justice system, custodians of the Umguyo practice, and future generations. , Thesis (PhD) -- Faculty of Social Sciences and Humanities, 2023
- Full Text:
- Authors: Mdlungu, Tandiwe https://orcid.org/0000-0001-7751-3873
- Date: 2023
- Subjects: violent crime -- Social aspects , Xhosa (African people) -- Rites and ceremonies , Initiation rites -- Religious aspects
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/29706 , vital:78873
- Description: This study aimed to investigate the factors contributing to the prevalence of violent crimes during the Umguyo practice. This is a traditional ceremony held the night before a Xhosa male adolescent’s Traditional Male Circumcision (TMC) or Ulwaluko. Despite it being a sacred and joyful occasion for the community, parents and initiates, violent crimes such as murder and assault have increased during the Umguyo practice season. They are mostly committed by young adolescent males from different villages as individuals or in large groups. Furthermore, little or no convictions are made for these crimes. The study adopted the Neutralization Theory, Rational and Differential Association Theory to explain the phenomenon of violence during the Umguyo practice. In-depth interviews were conducted with the custodians of knowledge on Umguyo practice, as key informants, in various villages in the Amathole District Municipality in South Africa. The study found that male adolescents use the Umguyo practice as a cover to commit violent crimes and that the following factors played a role: territorial disputes, the lack of significance of the practice to the young boys, excessive alcohol use in the name of culture, and the economic status of the hosting families. The study also revealed that other crimes, such as burglary and livestock theft, increased during the Umguyo practice season. The study recommends that community leaders, such as chiefs, should enforce stricter curfews on the night of the Umguyo practice, strengthen relations between law enforcement and community members to build trust, and encourage more witnesses of crime to come forward. The study also suggests that awareness campaigns should be held in the build-up to the initiation season. This could be beneficial for the criminal justice system, custodians of the Umguyo practice, and future generations. , Thesis (PhD) -- Faculty of Social Sciences and Humanities, 2023
- Full Text:
An assessment of youth empowerment programmes and job creation opportunities: a case of Mhlontlo Local Municipality
- Authors: Mabono, Tumeka Patricia
- Date: 2023-01
- Subjects: Youth -- Employment -- South Africa , Job creation -- Youth -- South Africa , Youth -- Services for -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26874 , vital:66038
- Description: Youth unemployment is a major policy concern in South Africa. This study aimed to assess youth programmes and job creation opportunities in Mhlontlo Local Municipality. This study intended to: 1. Examine the context, purpose, objectives, assumptions and claims of the national youth empowerment policy on job creation, 2. To assess the implementation of the youth empowerment programs in Mhlontlo Local Municipality for improved job creation, and lastly 3. To provide suitable recommendations on improving youth empowerment programmes and job creation in Mhlontlo Local Municipality. This study adopted a qualitative research design, that included and adapted the use of semi structured interviews and focus groups discussions in the context of COVID 19 regulations. The key findings from the analysis of data included the following – • The Mhlontlo Local Municipality has not developed its own local youth development and empowerment policy. • The design limitations in the theory of change of the National Youth Policy negatively affected the implementation of youth programmes in Mhlontlo Municipality • Mhlontlo Local Municipality’s implementation of youth programme failed to achieve its outcomes of creating a sustainable employment for youth. • There was distinct difference between the espoused views of municipal managers and actual experience of implementation of youth programmes the Mhlontlo Local Municipality that impacted negatively on the implementation of the youth development programme. • Their leadership buy-in and championship for youth development in Mhlontlo Local Municipality from selected managers in the municipality and but not from the political office. • There was lack of transparency and communication mechanisms by Mhlontlo Local Municipality the for-youth participation and engagement with of all stakeholders in decision making. , Thesis (MPA) -- Faculty of Management and Commerce, 2023
- Full Text:
- Authors: Mabono, Tumeka Patricia
- Date: 2023-01
- Subjects: Youth -- Employment -- South Africa , Job creation -- Youth -- South Africa , Youth -- Services for -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26874 , vital:66038
- Description: Youth unemployment is a major policy concern in South Africa. This study aimed to assess youth programmes and job creation opportunities in Mhlontlo Local Municipality. This study intended to: 1. Examine the context, purpose, objectives, assumptions and claims of the national youth empowerment policy on job creation, 2. To assess the implementation of the youth empowerment programs in Mhlontlo Local Municipality for improved job creation, and lastly 3. To provide suitable recommendations on improving youth empowerment programmes and job creation in Mhlontlo Local Municipality. This study adopted a qualitative research design, that included and adapted the use of semi structured interviews and focus groups discussions in the context of COVID 19 regulations. The key findings from the analysis of data included the following – • The Mhlontlo Local Municipality has not developed its own local youth development and empowerment policy. • The design limitations in the theory of change of the National Youth Policy negatively affected the implementation of youth programmes in Mhlontlo Municipality • Mhlontlo Local Municipality’s implementation of youth programme failed to achieve its outcomes of creating a sustainable employment for youth. • There was distinct difference between the espoused views of municipal managers and actual experience of implementation of youth programmes the Mhlontlo Local Municipality that impacted negatively on the implementation of the youth development programme. • Their leadership buy-in and championship for youth development in Mhlontlo Local Municipality from selected managers in the municipality and but not from the political office. • There was lack of transparency and communication mechanisms by Mhlontlo Local Municipality the for-youth participation and engagement with of all stakeholders in decision making. , Thesis (MPA) -- Faculty of Management and Commerce, 2023
- Full Text:
An investigation into the effect of dietary protein and fishmeal replacement in juvenile Yellowtail, seriola lalandi (pisces: carangidae) in a recirculating aquaculture system
- Manjingolo, Apelele https://orcid.org/0000-0003-3914-4821
- Authors: Manjingolo, Apelele https://orcid.org/0000-0003-3914-4821
- Date: 2023-01
- Subjects: Yellowtail , Integrated aquaculture , Yellowtail fisheries
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27489 , vital:67332
- Description: The yellowtail kingfish, Seriola lalandi, is a carnivorous species, which require high levels 40 Percent of protein in its diet of which a significant portion comes from fishmeal. Fishmeal is usually the main ingredient when formulating a diet for carnivorous fish because of its high protein content, good digestibility and balanced essential amino acid profile. The use of fishmeal in diet formulations has decreased because of high prices and short supply. Aquaculturists have little alternative but to reduce the amount used or replace it with alternative suitable protein sources. This study aimed to contribute to the optimization of protein requirements and fishmeal replacement in the diet of juvenile yellowtail in a Recirculating Aquaculture System RAS. This study was conducted at the marine finfish farm, Kingfish Enterprises Pty Ltd in the East London Industrial Development Zone ELIDZ in a purpose designed RAS. The first experiment investigated the effect of dietary protein level on survival, growth, food conversion ratio FCR and health of juvenile yellowtail in a RAS. Four iso-calorific diets containing different dietary protein levels 38 Percent , 44 Percent , 50 Percent and 56 Percent were formulated. Each diet was fed to three RAS tanks holding juvenile yellowtail 30 fish per tank for 49 days. Dietary protein levels did not influence survival of juvenile yellowtail. Specific growth rate SGR p equal 0.003) was greater in fish fed 56 Percent protein compared to fish fed 38 Percent protein but there were no differences between the 56 Percent , 50 Percent and 44 Percent protein diets. There were no differences in protein efficiency ratio PER between the four diets. FCR decreased with increasing protein level with fish being fed the 56 Percent protein yielding the lowest FCR 1.26 compared to fish fed 38 Percent protein 1.76 p equal 0.003, however, there was no difference between the 44 Percent , 50 Percent and 56 Percent protein levels. The hepatocytes of fish fed high dietary lipid content diet with 38 Percent and 44 Percent protein showed large lipid vacuole zones in the cytoplasm p greater 0.001. Body protein, ash, moisture, and lipid was not affected by different dietary protein levels. In terms of producing a diet with best growth at the lowest cost, a 44 Percent protein diet is considered as optimal for juvenile yellowtail in RAS. The second experiment investigated the effect of partial and full replacement of fishmeal with a mixture of alternative protein sources chicken meal, blood meal, and soybean meal in equal proportions that are more sustainable and less costly. Four experimental diets were formulated to be iso-nitrogenous 44 Percent protein and iso-calorific 19.50 Mg/Kg as follows: 1 a control diet with fishmeal as the only protein source which was the same formulation as the 44 Percent diet used in the first experiment, 2 control diet in which 33 Percent of fishmeal was replaced with the protein mixture, 3 control diet in which 67 Percent of fishmeal was replaced with the protein mixture and 4 control diet in which 100 Percent of fishmeal was replaced with the protein mixture. Different fishmeal levels in the diets did not have an effect on the survival on juvenile yellowtail. Specific growth rate SGR was greater for fish fed 67 and 100 Percent fishmeal p equal 0.017 compared to fish fed 0 Percent fishmeal. There were, however, no differences in SGR between fish fed 33, 67, and 100 Percent fishmeal. Condition factor CF was significantly affected by the interaction between dietary treatment and time with average values lower at the end of experiment compared to the start of the experiment. On day 28 p equal 0.02 and 49 p equal 0.01, CF of fish fed 67 and 100 Percent fishmeal diet differed significantly from those fed the 0 Percent fishmeal diet but 33, 67, and 100 Percent fishmeal diets did not differ from each other . Feed conversion ratio FCR was significantly affected by fishmeal replacement with fish on fishmeal-containing diets showing lower FCRs compared to those on fishmeal-free diets p equal 0.001. Fish fed diets containing 67 and 100 Percent fishmeal had low PER 0.026 compared to fish fed 0 Percent fishmeal. There were, however, no differences in PER between fish fed 33, 67, and 100 Percent fishmeal. Hepatosomatic index HSI was not affected by levels of fishmeal replacement in the diet. Body protein, ash, moisture, and lipid was not affected by partial and full replacement of fishmeal. The results indicate that full replacement of fishmeal 0 Percent diet had the worst SGR, FCR, and PER. The remaining three diets were statistically similar which suggests that a diet with 33 Percent fishmeal produces as good growth, FCR and PER as 67 and 100 Percent fishmeal diets. However, as there were also similarities in SGR and PER for the 0 and 33 Percent fishmeal diets, it is therefore recommended that future studies focus on the region between 33-67 Percent to find the optimal break point for the various growth indicators. This study has provided foundation for the formulation of yellowtail kingfish diet which is suitable for use in a RAS. , Thesis (MSci) -- Faculty of Science and Agriculture, 2023
- Full Text:
- Authors: Manjingolo, Apelele https://orcid.org/0000-0003-3914-4821
- Date: 2023-01
- Subjects: Yellowtail , Integrated aquaculture , Yellowtail fisheries
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27489 , vital:67332
- Description: The yellowtail kingfish, Seriola lalandi, is a carnivorous species, which require high levels 40 Percent of protein in its diet of which a significant portion comes from fishmeal. Fishmeal is usually the main ingredient when formulating a diet for carnivorous fish because of its high protein content, good digestibility and balanced essential amino acid profile. The use of fishmeal in diet formulations has decreased because of high prices and short supply. Aquaculturists have little alternative but to reduce the amount used or replace it with alternative suitable protein sources. This study aimed to contribute to the optimization of protein requirements and fishmeal replacement in the diet of juvenile yellowtail in a Recirculating Aquaculture System RAS. This study was conducted at the marine finfish farm, Kingfish Enterprises Pty Ltd in the East London Industrial Development Zone ELIDZ in a purpose designed RAS. The first experiment investigated the effect of dietary protein level on survival, growth, food conversion ratio FCR and health of juvenile yellowtail in a RAS. Four iso-calorific diets containing different dietary protein levels 38 Percent , 44 Percent , 50 Percent and 56 Percent were formulated. Each diet was fed to three RAS tanks holding juvenile yellowtail 30 fish per tank for 49 days. Dietary protein levels did not influence survival of juvenile yellowtail. Specific growth rate SGR p equal 0.003) was greater in fish fed 56 Percent protein compared to fish fed 38 Percent protein but there were no differences between the 56 Percent , 50 Percent and 44 Percent protein diets. There were no differences in protein efficiency ratio PER between the four diets. FCR decreased with increasing protein level with fish being fed the 56 Percent protein yielding the lowest FCR 1.26 compared to fish fed 38 Percent protein 1.76 p equal 0.003, however, there was no difference between the 44 Percent , 50 Percent and 56 Percent protein levels. The hepatocytes of fish fed high dietary lipid content diet with 38 Percent and 44 Percent protein showed large lipid vacuole zones in the cytoplasm p greater 0.001. Body protein, ash, moisture, and lipid was not affected by different dietary protein levels. In terms of producing a diet with best growth at the lowest cost, a 44 Percent protein diet is considered as optimal for juvenile yellowtail in RAS. The second experiment investigated the effect of partial and full replacement of fishmeal with a mixture of alternative protein sources chicken meal, blood meal, and soybean meal in equal proportions that are more sustainable and less costly. Four experimental diets were formulated to be iso-nitrogenous 44 Percent protein and iso-calorific 19.50 Mg/Kg as follows: 1 a control diet with fishmeal as the only protein source which was the same formulation as the 44 Percent diet used in the first experiment, 2 control diet in which 33 Percent of fishmeal was replaced with the protein mixture, 3 control diet in which 67 Percent of fishmeal was replaced with the protein mixture and 4 control diet in which 100 Percent of fishmeal was replaced with the protein mixture. Different fishmeal levels in the diets did not have an effect on the survival on juvenile yellowtail. Specific growth rate SGR was greater for fish fed 67 and 100 Percent fishmeal p equal 0.017 compared to fish fed 0 Percent fishmeal. There were, however, no differences in SGR between fish fed 33, 67, and 100 Percent fishmeal. Condition factor CF was significantly affected by the interaction between dietary treatment and time with average values lower at the end of experiment compared to the start of the experiment. On day 28 p equal 0.02 and 49 p equal 0.01, CF of fish fed 67 and 100 Percent fishmeal diet differed significantly from those fed the 0 Percent fishmeal diet but 33, 67, and 100 Percent fishmeal diets did not differ from each other . Feed conversion ratio FCR was significantly affected by fishmeal replacement with fish on fishmeal-containing diets showing lower FCRs compared to those on fishmeal-free diets p equal 0.001. Fish fed diets containing 67 and 100 Percent fishmeal had low PER 0.026 compared to fish fed 0 Percent fishmeal. There were, however, no differences in PER between fish fed 33, 67, and 100 Percent fishmeal. Hepatosomatic index HSI was not affected by levels of fishmeal replacement in the diet. Body protein, ash, moisture, and lipid was not affected by partial and full replacement of fishmeal. The results indicate that full replacement of fishmeal 0 Percent diet had the worst SGR, FCR, and PER. The remaining three diets were statistically similar which suggests that a diet with 33 Percent fishmeal produces as good growth, FCR and PER as 67 and 100 Percent fishmeal diets. However, as there were also similarities in SGR and PER for the 0 and 33 Percent fishmeal diets, it is therefore recommended that future studies focus on the region between 33-67 Percent to find the optimal break point for the various growth indicators. This study has provided foundation for the formulation of yellowtail kingfish diet which is suitable for use in a RAS. , Thesis (MSci) -- Faculty of Science and Agriculture, 2023
- Full Text:
Host teachers’ mentoring role towards supporting the development and training of pre-service teacher training: implications for teaching practice
- Authors: Majiba, Nolonwabo Happiness
- Date: 2023-01
- Subjects: Mentoring in education , Teachers -- Training of
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/29625 , vital:78416
- Description: The focus of the study was on host teachers’ mentoring role towards supporting the development and training of pre-service teachers. Spending time in the workplace and providing pre-service teachers with an authentic context within which they can demonstrate the integration of theory and practice, is a crucial component of the teacher training programme. Teachers who are hosting pre-service teachers in schools during teaching practice sessions fulfil the roles of mentors towards supporting the development and training of pre-service teachers. Despite the different meanings and/views attached to mentoring, the most important role of host teachers as mentors is to guide pre-service teachers in their professional learning development. The study is guided by Vygotsky’s Constructivist theory to highlight the important role of host teachers (mentors) as “knowledgeable others”. The study employed a qualitative approach within the interpretivist paradigm. Purposive sampling was used to sample four urban primary schools in the Buffalo City Education District of the Eastern Cape Province. Eight teachers who had past experience hosting pre-service teachers and third- and fourth-year education students were selected as participants. Semi-structured interviews and document reviews were used to collect data. Thematic analysis was used to analyze tape-recorded data. Despite the importance of this crucial component of teacher training, the findings of the study revealed various gaps in the mentoring process, which are as follows: (i) host teachers are experiencing difficulties with the mentoring of pre-service teachers due to lack of formal and/or informal training; (ii) lack of commitment amongst pre-service teachers who seemed to perceive teaching practice as a matter of compliance to merely get an assessment score to pass the qualification; (iii) host teachers regard pre-service teachers as relief teachers who end up taking full workloads in the absence of host teachers. Based on the findings, the study came up inter alia with the following recommendations: (i) Mutually agreed policies between lecturers and host teachers (mentors) outlining to the roles, objectives and responsibilities of host teachers and the authority to fulfil their roles and responsibilities effectively. (ii) Host teachers (mentors) to undergo proper and goal- oriented induction and orientation workshops to make them more conscious of the complexities of teacher training; pre-service teachers’ needs and their own needs. The study also came up with the following recommendations for further research: (i) the study was concluded on a small scale comprising one district in four schools, future studies may contribute by conducting a similar investigation on a larger scope and even taking a comparative dimension between districts and among schools. (ii) future studies may narrow the focus of the study to a single aspect like time constraints in the implementation of school experience. , Thesis (PhD) -- Faculty of Education, 2023
- Full Text:
- Authors: Majiba, Nolonwabo Happiness
- Date: 2023-01
- Subjects: Mentoring in education , Teachers -- Training of
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/29625 , vital:78416
- Description: The focus of the study was on host teachers’ mentoring role towards supporting the development and training of pre-service teachers. Spending time in the workplace and providing pre-service teachers with an authentic context within which they can demonstrate the integration of theory and practice, is a crucial component of the teacher training programme. Teachers who are hosting pre-service teachers in schools during teaching practice sessions fulfil the roles of mentors towards supporting the development and training of pre-service teachers. Despite the different meanings and/views attached to mentoring, the most important role of host teachers as mentors is to guide pre-service teachers in their professional learning development. The study is guided by Vygotsky’s Constructivist theory to highlight the important role of host teachers (mentors) as “knowledgeable others”. The study employed a qualitative approach within the interpretivist paradigm. Purposive sampling was used to sample four urban primary schools in the Buffalo City Education District of the Eastern Cape Province. Eight teachers who had past experience hosting pre-service teachers and third- and fourth-year education students were selected as participants. Semi-structured interviews and document reviews were used to collect data. Thematic analysis was used to analyze tape-recorded data. Despite the importance of this crucial component of teacher training, the findings of the study revealed various gaps in the mentoring process, which are as follows: (i) host teachers are experiencing difficulties with the mentoring of pre-service teachers due to lack of formal and/or informal training; (ii) lack of commitment amongst pre-service teachers who seemed to perceive teaching practice as a matter of compliance to merely get an assessment score to pass the qualification; (iii) host teachers regard pre-service teachers as relief teachers who end up taking full workloads in the absence of host teachers. Based on the findings, the study came up inter alia with the following recommendations: (i) Mutually agreed policies between lecturers and host teachers (mentors) outlining to the roles, objectives and responsibilities of host teachers and the authority to fulfil their roles and responsibilities effectively. (ii) Host teachers (mentors) to undergo proper and goal- oriented induction and orientation workshops to make them more conscious of the complexities of teacher training; pre-service teachers’ needs and their own needs. The study also came up with the following recommendations for further research: (i) the study was concluded on a small scale comprising one district in four schools, future studies may contribute by conducting a similar investigation on a larger scope and even taking a comparative dimension between districts and among schools. (ii) future studies may narrow the focus of the study to a single aspect like time constraints in the implementation of school experience. , Thesis (PhD) -- Faculty of Education, 2023
- Full Text:
The effect of the anaesthetics 1 Clove oil and MS-222 on the sedation, recovery, survival, population growth and fecundity of the calanoid copepod, Pseudodiaptomus hessei Copepoda Calanoida under culture conditions.
- Authors: Bulube, Masivuye Nomazizi
- Date: 2023-01
- Subjects: Water quality , Marine biodiversity , Aquatic animals -- Food
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27524 , vital:67430
- Description: Compared to current live food organisms used in aquaculture, the calanoid copepod, Pseudodiaptomus hessei is smaller and has a superior nutritional value. However, due to their fast and erratic movements, manipulating and counting this species for aquaculture research purposes is difficult. For easier manipulation it is therefore necessary to sedate the copepods. The study aimed to determine the effect of two anaesthetics on sedation, recovery, survival, population growth and fecundity of the calanoid copepod, Pseudodiaptomus hessei, under culture conditions. Male and female P. hessei were exposed to the anaesthetics clove oil and Tricaine Methane sulfonate (MS-222). Twelve replicates of five copepods each were exposedto clove oil at 100, 150 and 200 μL/L, and to MS-222 at 300, 600, 900, 1200 and 1500 mg/Lwith the number of fully sedated copepods being recorded. clove oil sedation only occurredafter 5:23±1:25 minutes in the 100 μL/L treatment while copepods exposed to 150 and200μL/L were anaesthetized within 2:48±0:46 and 0:40±0:07 minutes respectively. Sedation did not occur in MS-222 at concentrations of 300 and 600 mg/L while at 900 mg/L all copepodswere sedated within 4:19±0:41 minutes. Only copepods exposed to 1200 and 1500 mg/L were all fully sedated within 2:26±1:46 and 1:23±0:37 minutes respectively. Clove oil recovery onlyoccurred at 4:40±1:32 minutes in the 100 μL/L treatment while copepods exposed to 150 and200 μL/L recovered at 8:30±1:46 and 12:12±0:59 minutes, respectively. In this study, all MS- 222 treatments showed full recovery at 1:07±0:41 to 1:11±0:41 minutes with 100% survivalrate. The growth development FPN (Final Population Number) for Clove oil, MS-222 and control were not different from the control indicating that exposure to the anaesthetic had no effect on their long-term survival (21 days). The mean clutch size of 34±5 eggs per sac was high compared to other studies on the species. Based on these findings the 150 μL/L Clove oiland 1200 mg/L MS-222 concentrations were the lowest doses of each anaesthetic to induce full sedation within 3 minutes followed by rapid recovery 87 within three minutes without it affecting its short (24 hours) and long-term survival, population growth and fecundity. Basedon sedation and recovery rates, effect on survival, fecundity and growth as well as cost and ease use, the 1200 mg/L MS-222 concentration is the recommended to safely anaesthetize P. hessei. , Thesis (MSci) -- Faculty of Science and Agriculture, 2023
- Full Text:
- Authors: Bulube, Masivuye Nomazizi
- Date: 2023-01
- Subjects: Water quality , Marine biodiversity , Aquatic animals -- Food
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27524 , vital:67430
- Description: Compared to current live food organisms used in aquaculture, the calanoid copepod, Pseudodiaptomus hessei is smaller and has a superior nutritional value. However, due to their fast and erratic movements, manipulating and counting this species for aquaculture research purposes is difficult. For easier manipulation it is therefore necessary to sedate the copepods. The study aimed to determine the effect of two anaesthetics on sedation, recovery, survival, population growth and fecundity of the calanoid copepod, Pseudodiaptomus hessei, under culture conditions. Male and female P. hessei were exposed to the anaesthetics clove oil and Tricaine Methane sulfonate (MS-222). Twelve replicates of five copepods each were exposedto clove oil at 100, 150 and 200 μL/L, and to MS-222 at 300, 600, 900, 1200 and 1500 mg/Lwith the number of fully sedated copepods being recorded. clove oil sedation only occurredafter 5:23±1:25 minutes in the 100 μL/L treatment while copepods exposed to 150 and200μL/L were anaesthetized within 2:48±0:46 and 0:40±0:07 minutes respectively. Sedation did not occur in MS-222 at concentrations of 300 and 600 mg/L while at 900 mg/L all copepodswere sedated within 4:19±0:41 minutes. Only copepods exposed to 1200 and 1500 mg/L were all fully sedated within 2:26±1:46 and 1:23±0:37 minutes respectively. Clove oil recovery onlyoccurred at 4:40±1:32 minutes in the 100 μL/L treatment while copepods exposed to 150 and200 μL/L recovered at 8:30±1:46 and 12:12±0:59 minutes, respectively. In this study, all MS- 222 treatments showed full recovery at 1:07±0:41 to 1:11±0:41 minutes with 100% survivalrate. The growth development FPN (Final Population Number) for Clove oil, MS-222 and control were not different from the control indicating that exposure to the anaesthetic had no effect on their long-term survival (21 days). The mean clutch size of 34±5 eggs per sac was high compared to other studies on the species. Based on these findings the 150 μL/L Clove oiland 1200 mg/L MS-222 concentrations were the lowest doses of each anaesthetic to induce full sedation within 3 minutes followed by rapid recovery 87 within three minutes without it affecting its short (24 hours) and long-term survival, population growth and fecundity. Basedon sedation and recovery rates, effect on survival, fecundity and growth as well as cost and ease use, the 1200 mg/L MS-222 concentration is the recommended to safely anaesthetize P. hessei. , Thesis (MSci) -- Faculty of Science and Agriculture, 2023
- Full Text:
The impact of domestic investment on economic growth in South Africa: a Sectoral Approach (1993 to 2020)
- Hobongwana, Khungile Goodwell https://orcid.org/0000-0003-0223-7370
- Authors: Hobongwana, Khungile Goodwell https://orcid.org/0000-0003-0223-7370
- Date: 2023-01
- Subjects: Economic development -- South Africa , Investments -- South Africa , Gross domestic product
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26753 , vital:65982
- Description: This study examined the impact of domestic investment on economic growth in South Africa: a sectoral approach from 1993 to 2020. The overall results as discussed by panel data ARDL revealed that domestic investment has an impact on at least one sectoral economic growth in South Africa in the long run. The panel data ARDL test reveals that domestic investment, employment, imports and exports have a significant correlation to influence GDP in the long run in at least one of the sectors. A pairwise Dumitrescu Hurlin panel causality tests determine that domestic investment (DI) does not homogeneously cause gross domestic product (GDP). This is because in South Africa the sectoral or structural change development relies much on foreign direct investment (FDI) rather than domestic investment, hence the negative homogeneous results. Therefore, we need to attract DI as the result shows, because a positive relationship can be expected between domestic investment and economic growth in line with the Keynesian theory where investment is expected to promote economic growth. The new-endogenous growth theory of investment that can be applied in detecting the effect of aggregate and disaggregate domestic investment on sectoral economic growth and aggregate economic growth. , Thesis (MCom) -- Faculty of Management and Commerce, 2023
- Full Text:
- Authors: Hobongwana, Khungile Goodwell https://orcid.org/0000-0003-0223-7370
- Date: 2023-01
- Subjects: Economic development -- South Africa , Investments -- South Africa , Gross domestic product
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26753 , vital:65982
- Description: This study examined the impact of domestic investment on economic growth in South Africa: a sectoral approach from 1993 to 2020. The overall results as discussed by panel data ARDL revealed that domestic investment has an impact on at least one sectoral economic growth in South Africa in the long run. The panel data ARDL test reveals that domestic investment, employment, imports and exports have a significant correlation to influence GDP in the long run in at least one of the sectors. A pairwise Dumitrescu Hurlin panel causality tests determine that domestic investment (DI) does not homogeneously cause gross domestic product (GDP). This is because in South Africa the sectoral or structural change development relies much on foreign direct investment (FDI) rather than domestic investment, hence the negative homogeneous results. Therefore, we need to attract DI as the result shows, because a positive relationship can be expected between domestic investment and economic growth in line with the Keynesian theory where investment is expected to promote economic growth. The new-endogenous growth theory of investment that can be applied in detecting the effect of aggregate and disaggregate domestic investment on sectoral economic growth and aggregate economic growth. , Thesis (MCom) -- Faculty of Management and Commerce, 2023
- Full Text:
An assessment of the role of the Speaker in the management of the National Assembly: the case of a democratic South Africa
- Authors: Lunyawo, Sipho
- Date: 2022-12
- Subjects: Legislative bodies -- South Africa -- Presiding officers , Mediation -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26742 , vital:65976
- Description: This study interrogates the role of the Speaker in the management of the National Assembly in post-apartheid South Africa. The major focus is on the tenure of the fifth Speaker which was marked with widespread parliament disruptions largely orchestrated by opposition parties. The research employed a qualitative secondary data methodology in which data was collected from secondary sources such as government documents and newspapers. Content analysis and critical discourse analysis were used to analyze data. The Study found that the Speaker plays a fundamental role in the management of the National Assembly. Nevertheless, the study also established that there are numerous challenges faced by the Speaker in the management of the National Assembly. The challenges include mediating the chaos and conflicts among members. The study also established the nature and causes of chaos in the House as well as the efforts put in place by the Speaker to encourage fair debate among MPs. The study concludes that the role of the Speaker in monitoring and regulating the House is crucial in ensuring that there is order in the House at any given time. This is also because the Speaker plays a fundamental role as the Peacekeeper of the House and this emanates from the Speaker’s role in the management of the House. Based on the findings and conclusions of the Study, three recommendations were put forward and these are; embracing a system where the Speaker is independent, introducing hefty penalties against deliberate misconduct, and the use of previous unfavorable incidents to amend the rules of the House. , Thesis (MPA) -- Faculty of Management and Commerce, 2022
- Full Text:
- Authors: Lunyawo, Sipho
- Date: 2022-12
- Subjects: Legislative bodies -- South Africa -- Presiding officers , Mediation -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26742 , vital:65976
- Description: This study interrogates the role of the Speaker in the management of the National Assembly in post-apartheid South Africa. The major focus is on the tenure of the fifth Speaker which was marked with widespread parliament disruptions largely orchestrated by opposition parties. The research employed a qualitative secondary data methodology in which data was collected from secondary sources such as government documents and newspapers. Content analysis and critical discourse analysis were used to analyze data. The Study found that the Speaker plays a fundamental role in the management of the National Assembly. Nevertheless, the study also established that there are numerous challenges faced by the Speaker in the management of the National Assembly. The challenges include mediating the chaos and conflicts among members. The study also established the nature and causes of chaos in the House as well as the efforts put in place by the Speaker to encourage fair debate among MPs. The study concludes that the role of the Speaker in monitoring and regulating the House is crucial in ensuring that there is order in the House at any given time. This is also because the Speaker plays a fundamental role as the Peacekeeper of the House and this emanates from the Speaker’s role in the management of the House. Based on the findings and conclusions of the Study, three recommendations were put forward and these are; embracing a system where the Speaker is independent, introducing hefty penalties against deliberate misconduct, and the use of previous unfavorable incidents to amend the rules of the House. , Thesis (MPA) -- Faculty of Management and Commerce, 2022
- Full Text:
Challenges faced by healthcare professionals in reporting near miss incidents in a hospital, at the Amathole District, Eastern Cape Province, South Africa
- Authors: Ntlanganiso, Lindiwe
- Date: 2022-12
- Subjects: Industrial accidents , Accident investigation
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27094 , vital:66276
- Description: Background Recording and investigation of NMIs can provide valuable information on monitoring and enhancing patient safety in the healthcare facilities. This in turn, can reduce the likelihood of medico-legal claims. Regardless of attempts to establish efficient incident reporting systems across the entire healthcare industry, underreporting of errors persists worldwide. Therefore, not only do near miss incidents serve as early warning signs of impending potential failure in the healthcare system, but they also provide a chance for patient safety improvement. With that in mind, this study was undertaken to investigate challenges faced by health care professionals in reporting near miss incidents at a hospital in the Amathole District, in the Eastern Cape province of South Africa. Aim The aim of the study was to develop recommendations for healthcare management and healthcare professionals on how to better manage NMIs, and by identifying the challenges faced by health care professionals and the impact they have on the quality of care at one state-funded district hospital. Setting The study was conducted with healthcare professionals at a district hospital in the Amathole District, Eastern Cape Province, South Africa. Methods This study used a mixed method study design. Purposive and convenience sampling were used for participants’ selection for the study. Quantitative data was collected using the WHO Near-Miss Approach while individual and focus group interviews with healthcare professionals were carried out for collecting qualitative data. The maternity and neonatal intensive care units were identified as the two high-risk areas from which most medical negligence claims are lodged. The number of complications that occurred in each month of the year 2019 was determined by using components of the WHO near miss approach. The researcher adopted this approach to serve as a baseline assessment. Data was analysed using both Nvivo Version 10 and SPSS Version 20. Findings The challenges that healthcare professionals face in reporting near miss incidents at the study site included lack of knowledge about the reporting tool and system, inability to identify a near miss incident and healthcare professional attitudes and practices. The document review revealed that the NMIs are existent but not reported on the prescribed reporting system, a total of 210 actual incidents had occurred in the maternity and neonatal units of the hospital, which accounts for 62% of the 357 deliveries in the year 2019. Conclusion Based on the study result and findings, the healthcare system should shift towards a proactive rather than a reactive approach to medical and clinical errors. Continuously reducing the incidence of all patient safety incidents requires improved prevention strategies and effective strategies for recovery from possible medico-legal claims. The study further suggests that additional focus should be placed on NMI reporting and investigation so that operative improvement plans can be developed, implemented, monitored and evaluated. In essence, these improvement plans should be designed to progress patient care, reduce avoidable PSIs and reduce medico-legal claims. , Thesis (MCur) -- Faculty of Health Sciences, 2022
- Full Text:
- Authors: Ntlanganiso, Lindiwe
- Date: 2022-12
- Subjects: Industrial accidents , Accident investigation
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27094 , vital:66276
- Description: Background Recording and investigation of NMIs can provide valuable information on monitoring and enhancing patient safety in the healthcare facilities. This in turn, can reduce the likelihood of medico-legal claims. Regardless of attempts to establish efficient incident reporting systems across the entire healthcare industry, underreporting of errors persists worldwide. Therefore, not only do near miss incidents serve as early warning signs of impending potential failure in the healthcare system, but they also provide a chance for patient safety improvement. With that in mind, this study was undertaken to investigate challenges faced by health care professionals in reporting near miss incidents at a hospital in the Amathole District, in the Eastern Cape province of South Africa. Aim The aim of the study was to develop recommendations for healthcare management and healthcare professionals on how to better manage NMIs, and by identifying the challenges faced by health care professionals and the impact they have on the quality of care at one state-funded district hospital. Setting The study was conducted with healthcare professionals at a district hospital in the Amathole District, Eastern Cape Province, South Africa. Methods This study used a mixed method study design. Purposive and convenience sampling were used for participants’ selection for the study. Quantitative data was collected using the WHO Near-Miss Approach while individual and focus group interviews with healthcare professionals were carried out for collecting qualitative data. The maternity and neonatal intensive care units were identified as the two high-risk areas from which most medical negligence claims are lodged. The number of complications that occurred in each month of the year 2019 was determined by using components of the WHO near miss approach. The researcher adopted this approach to serve as a baseline assessment. Data was analysed using both Nvivo Version 10 and SPSS Version 20. Findings The challenges that healthcare professionals face in reporting near miss incidents at the study site included lack of knowledge about the reporting tool and system, inability to identify a near miss incident and healthcare professional attitudes and practices. The document review revealed that the NMIs are existent but not reported on the prescribed reporting system, a total of 210 actual incidents had occurred in the maternity and neonatal units of the hospital, which accounts for 62% of the 357 deliveries in the year 2019. Conclusion Based on the study result and findings, the healthcare system should shift towards a proactive rather than a reactive approach to medical and clinical errors. Continuously reducing the incidence of all patient safety incidents requires improved prevention strategies and effective strategies for recovery from possible medico-legal claims. The study further suggests that additional focus should be placed on NMI reporting and investigation so that operative improvement plans can be developed, implemented, monitored and evaluated. In essence, these improvement plans should be designed to progress patient care, reduce avoidable PSIs and reduce medico-legal claims. , Thesis (MCur) -- Faculty of Health Sciences, 2022
- Full Text:
Effectiveness of monetary policy transmission mechanism: the case of selected SADC countries
- Tengwa, Anakho https://orcid.org/0000-0002-0700-8668
- Authors: Tengwa, Anakho https://orcid.org/0000-0002-0700-8668
- Date: 2022-12
- Subjects: Monetary policy -- Africa, Southern , Transmission mechanism (Monetary policy) -- Africa, Southern , Economic development -- Africa, Southern
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26863 , vital:66037
- Description: Monetary policy plays a significant role in countries economic development. The variability in inflation in the SADC region provides room to question the Effectiveness of the transmission of monetary policy as these countries experience inflation in different ways. The study analyses the effectiveness of monetary policy transmission mechanism on the selected 5 SADC countries, South Africa, Botswana, Mauritius, Tanzania, and Zambia. The selection of the countries was mainly based on data availability. To answer the study hypothesis, the study used secondary data from different data sources, employing the Vector Autoregression Regression. The different channels analysed include the exchange rate, interest rates as well as credit channel to measure monetary policy tools. The main variables are, Gross Domestic Product (GDP), Consumer Price Index (CPI)cpi and money supply. Panel unit root was tested to test the stationarity of the variables and the appropriate lag length was determined. Panel VAR model was estimated where the focus was mainly on variance decomposition and impulse response. Then lastly the stability of the model was tested using diagnostic test. The results revealed that interest rates channel and exchange rate channel have a more significant effect in explaining the transmission of macroeconomic shock to the rest of the economy through gpd and cpi. While the credit channel mostly transmits to the rest of the economy through money supply and cpi, its effects from GDP are rather insignificant. It is also noted that interest rates serve as the dominant channel in transmitting monetary policy shocks to the rest of the economy. When central banks decrease prime lending rates for commercial banks, this is passed to consumers making it less expensive to borrow. In the long run, attracts foreign investors which harms the domestic currency. The author has noted that future research could focus on how asset price channel affects the economy. , Thesis (MCom) -- Faculty of Management and Commerce, 2022
- Full Text:
- Authors: Tengwa, Anakho https://orcid.org/0000-0002-0700-8668
- Date: 2022-12
- Subjects: Monetary policy -- Africa, Southern , Transmission mechanism (Monetary policy) -- Africa, Southern , Economic development -- Africa, Southern
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/26863 , vital:66037
- Description: Monetary policy plays a significant role in countries economic development. The variability in inflation in the SADC region provides room to question the Effectiveness of the transmission of monetary policy as these countries experience inflation in different ways. The study analyses the effectiveness of monetary policy transmission mechanism on the selected 5 SADC countries, South Africa, Botswana, Mauritius, Tanzania, and Zambia. The selection of the countries was mainly based on data availability. To answer the study hypothesis, the study used secondary data from different data sources, employing the Vector Autoregression Regression. The different channels analysed include the exchange rate, interest rates as well as credit channel to measure monetary policy tools. The main variables are, Gross Domestic Product (GDP), Consumer Price Index (CPI)cpi and money supply. Panel unit root was tested to test the stationarity of the variables and the appropriate lag length was determined. Panel VAR model was estimated where the focus was mainly on variance decomposition and impulse response. Then lastly the stability of the model was tested using diagnostic test. The results revealed that interest rates channel and exchange rate channel have a more significant effect in explaining the transmission of macroeconomic shock to the rest of the economy through gpd and cpi. While the credit channel mostly transmits to the rest of the economy through money supply and cpi, its effects from GDP are rather insignificant. It is also noted that interest rates serve as the dominant channel in transmitting monetary policy shocks to the rest of the economy. When central banks decrease prime lending rates for commercial banks, this is passed to consumers making it less expensive to borrow. In the long run, attracts foreign investors which harms the domestic currency. The author has noted that future research could focus on how asset price channel affects the economy. , Thesis (MCom) -- Faculty of Management and Commerce, 2022
- Full Text:
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:
- 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:
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:
- 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: