Efficacy, acceptability and feasibility of mhealth technology in promoting adherence to anti-diabetic therapy and glycaemic control among diabetic patients in Eastern Cape, South Africa”
- Authors: Owolabi, Eyitayo Omolara
- Date: 2019
- Subjects: Diabetes
- Language: English
- Type: Thesis , Doctoral , PhD (Nursing)
- Identifier: http://hdl.handle.net/10353/16792 , vital:40774
- Description: Background: Diabetes mellitus is a disease of a significant public health concern and a leading cause of death and disability worldwide. In Africa, South Africa ranks second among countries with the highest burden of diabetes, and with a poor level of glycaemic control. mHealth technology is an innovative and cost-effective measure of promoting health and the use of text messaging for fostering health is evolving. In South Africa, there is hardly any study involving the use of mobile health technology, including text messaging for promoting health among diabetic patients. Purpose: The aim of this study was to determine the efficacy, feasibility and acceptability of mHealth in promoting adherence and glycaemic control among diabetic patients in resource-poor settings of the Eastern Cape Province of South Africa. Also, the study assessed the impact of text messaging on knowledge, selfmanagement behaviour, self-efficacy and health-related quality of life. Methodology: The study adopted a multi-centre, two-arm, parallel, randomised controlled trial design. Participants were randomly assigned to the intervention (n=108) and control arm (n=108). Participants’ socio-demographic information was obtained using the widely validated WHO STEPwise questionnaire, and a selfdeveloped questionnaire, including previously validated measurement scales were used to obtain information on adherence, self-management behaviour, self-efficacy and health-related quality of life. Participants in the intervention arm received daily text messages related to diabetes management and care for six months. Data were collected at baseline and six months post-intervention. Blood glucose, blood pressure and anthropometric measurements followed standard procedure. Mixed-model analysis was used to assess the impact of the SMS on random blood glucose while xi | P a g e linear and bivariate logistic regression were used to assess for effect on other clinical outcomes. Results: The mean age of the participants was 60.64 (SD± 11.58) years. The majority of the study participants had secondary level of education (95.3%) and earned 1500 to 14200 Rand per month (67.7%). For both the intervention and the control group, majority never used tobacco (98.10% vs 94.40%) or alcohol (88.00% vs 87.00%). Both arms of the study showed improvement in the primary outcome (blood glucose level), with no significant difference, the mean adjusted difference in blood glucose from baseline to six months post-intervention was 0.26 (-0.81 to 1.32), p=0.634. Also, the intervention did not have a significant effect on the secondary outcomes (knowledge, medication adherence, dietary adherence, adherence to physical activity, healthrelated quality of life, self-management behaviour and diabetes distress). Similarly, the intervention did not have any significant effect on secondary clinical outcomes such as weight (p=0.654), body mass index (p=0.439), systolic (p=0.610) and diastolic blood pressure (p=0.535). An overwhelming majority of the participants (90.74%) were pleased with the intervention and felt it was helpful. Of those who took part in the intervention, 91% completed the follow-up study after six months. Conclusion: The use of SMS is a highly acceptable and feasible adjunct to standard clinical care in the promotion of health among diabetic patients in this study setting. Although there was a little improvement, the efficacy of a unidirectional text messaging in promoting health outcomes in this study setting is still doubt
- Full Text:
- Authors: Owolabi, Eyitayo Omolara
- Date: 2019
- Subjects: Diabetes
- Language: English
- Type: Thesis , Doctoral , PhD (Nursing)
- Identifier: http://hdl.handle.net/10353/16792 , vital:40774
- Description: Background: Diabetes mellitus is a disease of a significant public health concern and a leading cause of death and disability worldwide. In Africa, South Africa ranks second among countries with the highest burden of diabetes, and with a poor level of glycaemic control. mHealth technology is an innovative and cost-effective measure of promoting health and the use of text messaging for fostering health is evolving. In South Africa, there is hardly any study involving the use of mobile health technology, including text messaging for promoting health among diabetic patients. Purpose: The aim of this study was to determine the efficacy, feasibility and acceptability of mHealth in promoting adherence and glycaemic control among diabetic patients in resource-poor settings of the Eastern Cape Province of South Africa. Also, the study assessed the impact of text messaging on knowledge, selfmanagement behaviour, self-efficacy and health-related quality of life. Methodology: The study adopted a multi-centre, two-arm, parallel, randomised controlled trial design. Participants were randomly assigned to the intervention (n=108) and control arm (n=108). Participants’ socio-demographic information was obtained using the widely validated WHO STEPwise questionnaire, and a selfdeveloped questionnaire, including previously validated measurement scales were used to obtain information on adherence, self-management behaviour, self-efficacy and health-related quality of life. Participants in the intervention arm received daily text messages related to diabetes management and care for six months. Data were collected at baseline and six months post-intervention. Blood glucose, blood pressure and anthropometric measurements followed standard procedure. Mixed-model analysis was used to assess the impact of the SMS on random blood glucose while xi | P a g e linear and bivariate logistic regression were used to assess for effect on other clinical outcomes. Results: The mean age of the participants was 60.64 (SD± 11.58) years. The majority of the study participants had secondary level of education (95.3%) and earned 1500 to 14200 Rand per month (67.7%). For both the intervention and the control group, majority never used tobacco (98.10% vs 94.40%) or alcohol (88.00% vs 87.00%). Both arms of the study showed improvement in the primary outcome (blood glucose level), with no significant difference, the mean adjusted difference in blood glucose from baseline to six months post-intervention was 0.26 (-0.81 to 1.32), p=0.634. Also, the intervention did not have a significant effect on the secondary outcomes (knowledge, medication adherence, dietary adherence, adherence to physical activity, healthrelated quality of life, self-management behaviour and diabetes distress). Similarly, the intervention did not have any significant effect on secondary clinical outcomes such as weight (p=0.654), body mass index (p=0.439), systolic (p=0.610) and diastolic blood pressure (p=0.535). An overwhelming majority of the participants (90.74%) were pleased with the intervention and felt it was helpful. Of those who took part in the intervention, 91% completed the follow-up study after six months. Conclusion: The use of SMS is a highly acceptable and feasible adjunct to standard clinical care in the promotion of health among diabetic patients in this study setting. Although there was a little improvement, the efficacy of a unidirectional text messaging in promoting health outcomes in this study setting is still doubt
- Full Text:
Elections as Drivers of Political Instability in Africa: A Case Study of Lesotho
- Authors: Moorosi, Mantsoaki
- Date: 2019
- Subjects: Elections Political parties -- Lesotho
- Language: English
- Type: Thesis , Masters , MSoc (Political Science)
- Identifier: http://hdl.handle.net/10353/16462 , vital:40722
- Description: The study sets out to investigate elections as drivers to political instability in Africa, using Lesotho as a case study from 2012 to 2017. It employs primary and secondary sources of data. The period is of interest for two reasons. Firstly, the continuing instability post three successive free and fair elections, and secondly, the advent of Coalition Governments. The structure adheres to two theoretical frameworks namely, a) Huntington’s two turn-over test and, b) Karl’s Fallacy of Electoralism. In order to investigate how elections could or could not be drivers to political instability, the researcher looked at the different forms of political instability in Lesotho. These include attempted coup d’état, assassinations and violation of territorial sovereignty. The later form being peculiar to the period under study as the other forms had occurred at some stage through the political history of this country. It further asserts uncertainty of hung Parliament and politicised institutions as attributes to the recurrence of political instability. It concludes that Lesotho is a deviant case from the two turn over test. The scope of the study supports the fallacy of electoralism. Several recommendations have been presented. These include that Government of Lesotho should amend the Constitution on the functions and powers of the King, Politicians should implement the promises they made to the electorates during campaigns, and regulate or abolish floor crossing in Parliament amongst others.
- Full Text:
- Authors: Moorosi, Mantsoaki
- Date: 2019
- Subjects: Elections Political parties -- Lesotho
- Language: English
- Type: Thesis , Masters , MSoc (Political Science)
- Identifier: http://hdl.handle.net/10353/16462 , vital:40722
- Description: The study sets out to investigate elections as drivers to political instability in Africa, using Lesotho as a case study from 2012 to 2017. It employs primary and secondary sources of data. The period is of interest for two reasons. Firstly, the continuing instability post three successive free and fair elections, and secondly, the advent of Coalition Governments. The structure adheres to two theoretical frameworks namely, a) Huntington’s two turn-over test and, b) Karl’s Fallacy of Electoralism. In order to investigate how elections could or could not be drivers to political instability, the researcher looked at the different forms of political instability in Lesotho. These include attempted coup d’état, assassinations and violation of territorial sovereignty. The later form being peculiar to the period under study as the other forms had occurred at some stage through the political history of this country. It further asserts uncertainty of hung Parliament and politicised institutions as attributes to the recurrence of political instability. It concludes that Lesotho is a deviant case from the two turn over test. The scope of the study supports the fallacy of electoralism. Several recommendations have been presented. These include that Government of Lesotho should amend the Constitution on the functions and powers of the King, Politicians should implement the promises they made to the electorates during campaigns, and regulate or abolish floor crossing in Parliament amongst others.
- Full Text:
Electrical, photo-thermal and mechanical degradation analysis of degraded single junction amorphous silicon solar modules
- Osayemwenre, Gilbert Omorodion
- Authors: Osayemwenre, Gilbert Omorodion
- Date: 2019
- Subjects: Solar cells Amorphous semiconductors Silicon
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15211 , vital:40204
- Description: In this present era of sustainable energy development, photovoltaic modules which are based on amorphous silicon cells have immeasurable prospects of contributing meaningfully to the energy demand of the world at large. The global consciousness of environmental safety issues has birthed the rapid demand for the photovoltaic system. However, the production increase is mainly in bulk-type crystalline (c-Si) solar cells. Thus, to meet the high demand of the market, single junction amorphous silicon (a-Si:H) solar cells production must be encouraged through active research in that regard. This could also help to improve its efficiency and reliability. There has recently been a sharp decrease in the production cost of the bulk Si solar cell, but the a-Si:H solar cell still remains the most economically viable in comparison to the other PV technologies. Companies such as Sharp are currently developing large-scale a-Si:H solar modules that can produce an efficiency of 10.5% after the long-term degradation process. To date, a-Si:H is believed to be one of the most promising thin-film PV technologies (Saito et al., 1993; Hamakawa et al., 1994). The cost of a solar PV manufacturing fell by 6% in 2014 (Santa, 2014), this is in accordance with the 2008 cost production forecast; thus, the cost record stands at 0.20 per watt, as reported by the NPD Solar publisher. Amorphous silicon (a-Si) solar modules generate more kilowatt-hour (kWh) of electricity per kilowatt (kW) than crystalline silicon or other technologies of the same capacity of installation. Furthermore, a-Si:H modules have more functional hours per day. Single junction amorphous silicon (a-Si:H) modules can function beyond the peak sun hours, and they also have a better performance on a cloudy day. vii In other words, a 1kW PV system of a-Si:H is expected to generate more electricity per year in comparison to 1kW PV from other technologies, hence there is a low energy payback time. In this study, commercially available single junction amorphous silicon modules were bought from a local market and they were immediately deployed outdoors. The initial reading of the modules, which served as baseline reading, showed an average of 25% decrease in the modules performance, therefore, there is a need for a long term monitoring process to obtain the best and worst performing modules. Measuring the performance parameters of these PV modules under real sun light (IV) provides a better degradation assessment. This conventional assessment cannot provide an in-depth insight responsible for the variation and degradation of the performance parameters. More obscured parameters like recombination current and ideality factor were obtained from the dark IV measurements. However, this is still superficial in a way. The intrinsic parameters were obtained from scanning probe microscopy (SPM) and CV measurements. The study focuses on the degradation analysis of a-Si:H due to an increase in defect density. A rise in the defect concentration is a huge problem because it causes long-term solar cell degradation, which increases the recombination current and decreases the conversion efficiency. Furthermore, it decreases the photo-generating current and reduces the effective efficiency of the solar device. In other words, the electrical output decreases. This research investigates the reduction in a-Si:H modules’ maximum power, and correlates these with a hot spot formation. A PVPM IV tracer was used for the outdoor characterisation of the module’s temperature profile, while the IR camera was used to analyse the hot spot centre. A four probe IV/CV from NMU was used for the indoor assessment of smaller samples cleaved from both the affected and non-affected regions to characterise the electrical variations across the module viii samples. To be precise, in this study, a naturally degraded single junction amorphous silicon module was delaminated and its mechanical properties were analysed and correlated with the contact potential from a Kelvin probe force microscopy (KPFM).
- Full Text:
- Authors: Osayemwenre, Gilbert Omorodion
- Date: 2019
- Subjects: Solar cells Amorphous semiconductors Silicon
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15211 , vital:40204
- Description: In this present era of sustainable energy development, photovoltaic modules which are based on amorphous silicon cells have immeasurable prospects of contributing meaningfully to the energy demand of the world at large. The global consciousness of environmental safety issues has birthed the rapid demand for the photovoltaic system. However, the production increase is mainly in bulk-type crystalline (c-Si) solar cells. Thus, to meet the high demand of the market, single junction amorphous silicon (a-Si:H) solar cells production must be encouraged through active research in that regard. This could also help to improve its efficiency and reliability. There has recently been a sharp decrease in the production cost of the bulk Si solar cell, but the a-Si:H solar cell still remains the most economically viable in comparison to the other PV technologies. Companies such as Sharp are currently developing large-scale a-Si:H solar modules that can produce an efficiency of 10.5% after the long-term degradation process. To date, a-Si:H is believed to be one of the most promising thin-film PV technologies (Saito et al., 1993; Hamakawa et al., 1994). The cost of a solar PV manufacturing fell by 6% in 2014 (Santa, 2014), this is in accordance with the 2008 cost production forecast; thus, the cost record stands at 0.20 per watt, as reported by the NPD Solar publisher. Amorphous silicon (a-Si) solar modules generate more kilowatt-hour (kWh) of electricity per kilowatt (kW) than crystalline silicon or other technologies of the same capacity of installation. Furthermore, a-Si:H modules have more functional hours per day. Single junction amorphous silicon (a-Si:H) modules can function beyond the peak sun hours, and they also have a better performance on a cloudy day. vii In other words, a 1kW PV system of a-Si:H is expected to generate more electricity per year in comparison to 1kW PV from other technologies, hence there is a low energy payback time. In this study, commercially available single junction amorphous silicon modules were bought from a local market and they were immediately deployed outdoors. The initial reading of the modules, which served as baseline reading, showed an average of 25% decrease in the modules performance, therefore, there is a need for a long term monitoring process to obtain the best and worst performing modules. Measuring the performance parameters of these PV modules under real sun light (IV) provides a better degradation assessment. This conventional assessment cannot provide an in-depth insight responsible for the variation and degradation of the performance parameters. More obscured parameters like recombination current and ideality factor were obtained from the dark IV measurements. However, this is still superficial in a way. The intrinsic parameters were obtained from scanning probe microscopy (SPM) and CV measurements. The study focuses on the degradation analysis of a-Si:H due to an increase in defect density. A rise in the defect concentration is a huge problem because it causes long-term solar cell degradation, which increases the recombination current and decreases the conversion efficiency. Furthermore, it decreases the photo-generating current and reduces the effective efficiency of the solar device. In other words, the electrical output decreases. This research investigates the reduction in a-Si:H modules’ maximum power, and correlates these with a hot spot formation. A PVPM IV tracer was used for the outdoor characterisation of the module’s temperature profile, while the IR camera was used to analyse the hot spot centre. A four probe IV/CV from NMU was used for the indoor assessment of smaller samples cleaved from both the affected and non-affected regions to characterise the electrical variations across the module viii samples. To be precise, in this study, a naturally degraded single junction amorphous silicon module was delaminated and its mechanical properties were analysed and correlated with the contact potential from a Kelvin probe force microscopy (KPFM).
- Full Text:
Evaluating Livestock Development Programmes through the Production Risk Interface: Case of the Kaonafatso ya Dikgomo (KyD) Scheme in South Africa
- Authors: Ngarava, Saul
- Date: 2019
- Subjects: Livestock projects
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/15730 , vital:40513
- Description: Livestock is significant in the livelihoods of the rural poor, providing a plethora of benefits. Livestock Development Programmes (LDPs) can transform smallholder farmers’ production for increased production and poverty reduction. The Kaonafatso ya Dikgomo (KyD) Scheme is a LDP implemented in South Africa with the aim of assisting smallholder farmers to attain economic and sustainable beef production. The literature shows that most evaluations of LDPs have been quantitative based on measurable and quantifiable metrics. Furthermore, various socio-economic and institutional factors have a bearing on the decision to participate in LDPs and eventually adopting the practices. Impact assessments of LDPs have been devoid of risk consideration as well as ascertaining how risk introduced by participating in LDPs has impacted productivity. The overall objective of the study was therefore to evaluate LDPs, focussing on benefits, participation and risk. The specific objectives of the study entailed developing a conceptual tool for measuring the qualitative and secondary benefits. Secondly, it was to determine factors influencing participation decisions in the KyD Scheme. Thirdly, the study sought to measure and compare calving rate and off-take rate risk between KyD Scheme participants and non-participants. Lastly, the study highlighted the variability (risk) introduced by participating in a LDP and its impact on production. The study utilised a cross-sectional survey of KyD Scheme participants and nonparticipants in KwaZulu-Natal, Limpopo and Eastern Cape Provinces of South Africa. Non-probability convenience sampling method was utilised in selecting a sample of 164 KyD Scheme participants and 81 non-participants. A semi-structured questionnaire was the data collection tool utilised. A conceptual “Livelihood Effect Benefit Index”; Probit, Tobit and Ordered Probit models; Just and Pope Production function; Propensity Score Matching; and Monte Carlo Simulations were utilised to analyse data. Statistical Package for Social Scientists version 24, STATA 13 and @Risk Decision Tool were the analytical packages utilised in analysing the data. The study found that the Scheme provided low qualitative benefits, mainly through social capital. Furthermore, socio-economic and institutional factors have significant impact on the decision to participate in the Scheme, extent of participation and decision to continue practicing Scheme experiences. In comparing the two groups of Scheme and Scheme non-participants, calving and off-take risk for KyD Scheme participants was lower than that of Scheme non-participants. In comparing individuals with similar characteristics between the two groups, Scheme participants reduced calving risk whilst increasing the off-take risk. Page | vi The study concluded that the Scheme exhibited low qualitative benefits. Furthermore, the decisions to participate and the extent of participation in the KyD Scheme were influenced by various socio-economic and institutional factors, which were however more favourable to resource endowed smallholder farmers. In addition, the Scheme had significant impact on production risk. The risk reducing determinants appeared to also favour more resource endowed smallholder farmers who had more farming experience. The study’s recommendations were subdivided into short term, medium term and long term. The short term recommendations included targeting farmers within a distance of between 30km and 90km from a formal market, promoting dipping services-based training and extension, and providing information and training concerning calving i.e. animal health, husbandry and breed selection for herd maximization. Participation in the Scheme and the extent of participation can be improved through enhancing awareness of the Scheme at various points where stock feed are available to farmers. Furthermore, enhanced cooperation with extension workers provides a conduit in improving awareness of the Scheme and enhancing participation. The medium term recommendations pertained to initiatives such as promoting other livelihood options to enhance benefits of the programme, and promoting social capital enhancing initiatives such as mentoring and providing social capital objectives that can be integrated into the overall livestock sector strategy. The long-term recommendations include initiatives such as subsidizing increase in herd size to between 50 and 120 cattle, maintaining a monthly frequency of farmer-extension contact of between 2 and 5 times per month, as well as incorporating calving and off-take risk in policy formulation, implementation and evaluation
- Full Text:
- Authors: Ngarava, Saul
- Date: 2019
- Subjects: Livestock projects
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/15730 , vital:40513
- Description: Livestock is significant in the livelihoods of the rural poor, providing a plethora of benefits. Livestock Development Programmes (LDPs) can transform smallholder farmers’ production for increased production and poverty reduction. The Kaonafatso ya Dikgomo (KyD) Scheme is a LDP implemented in South Africa with the aim of assisting smallholder farmers to attain economic and sustainable beef production. The literature shows that most evaluations of LDPs have been quantitative based on measurable and quantifiable metrics. Furthermore, various socio-economic and institutional factors have a bearing on the decision to participate in LDPs and eventually adopting the practices. Impact assessments of LDPs have been devoid of risk consideration as well as ascertaining how risk introduced by participating in LDPs has impacted productivity. The overall objective of the study was therefore to evaluate LDPs, focussing on benefits, participation and risk. The specific objectives of the study entailed developing a conceptual tool for measuring the qualitative and secondary benefits. Secondly, it was to determine factors influencing participation decisions in the KyD Scheme. Thirdly, the study sought to measure and compare calving rate and off-take rate risk between KyD Scheme participants and non-participants. Lastly, the study highlighted the variability (risk) introduced by participating in a LDP and its impact on production. The study utilised a cross-sectional survey of KyD Scheme participants and nonparticipants in KwaZulu-Natal, Limpopo and Eastern Cape Provinces of South Africa. Non-probability convenience sampling method was utilised in selecting a sample of 164 KyD Scheme participants and 81 non-participants. A semi-structured questionnaire was the data collection tool utilised. A conceptual “Livelihood Effect Benefit Index”; Probit, Tobit and Ordered Probit models; Just and Pope Production function; Propensity Score Matching; and Monte Carlo Simulations were utilised to analyse data. Statistical Package for Social Scientists version 24, STATA 13 and @Risk Decision Tool were the analytical packages utilised in analysing the data. The study found that the Scheme provided low qualitative benefits, mainly through social capital. Furthermore, socio-economic and institutional factors have significant impact on the decision to participate in the Scheme, extent of participation and decision to continue practicing Scheme experiences. In comparing the two groups of Scheme and Scheme non-participants, calving and off-take risk for KyD Scheme participants was lower than that of Scheme non-participants. In comparing individuals with similar characteristics between the two groups, Scheme participants reduced calving risk whilst increasing the off-take risk. Page | vi The study concluded that the Scheme exhibited low qualitative benefits. Furthermore, the decisions to participate and the extent of participation in the KyD Scheme were influenced by various socio-economic and institutional factors, which were however more favourable to resource endowed smallholder farmers. In addition, the Scheme had significant impact on production risk. The risk reducing determinants appeared to also favour more resource endowed smallholder farmers who had more farming experience. The study’s recommendations were subdivided into short term, medium term and long term. The short term recommendations included targeting farmers within a distance of between 30km and 90km from a formal market, promoting dipping services-based training and extension, and providing information and training concerning calving i.e. animal health, husbandry and breed selection for herd maximization. Participation in the Scheme and the extent of participation can be improved through enhancing awareness of the Scheme at various points where stock feed are available to farmers. Furthermore, enhanced cooperation with extension workers provides a conduit in improving awareness of the Scheme and enhancing participation. The medium term recommendations pertained to initiatives such as promoting other livelihood options to enhance benefits of the programme, and promoting social capital enhancing initiatives such as mentoring and providing social capital objectives that can be integrated into the overall livestock sector strategy. The long-term recommendations include initiatives such as subsidizing increase in herd size to between 50 and 120 cattle, maintaining a monthly frequency of farmer-extension contact of between 2 and 5 times per month, as well as incorporating calving and off-take risk in policy formulation, implementation and evaluation
- Full Text:
Evaluation of Crime Prevention through Environmental Design Principles at the University of Fort Hare, Alice Campus
- Authors: Mditshwa, Abongile Sisanda
- Date: 2019
- Subjects: Crime prevention
- Language: English
- Type: Thesis , Masters , MSoc.Sci (Criminology)
- Identifier: http://hdl.handle.net/10353/17695 , vital:41137
- Description: The University of Fort Hare Alice campus experiences high crime rates. To address this problem, and add to the literature, this study applied the Crime Prevention through Environmental design (CPTED) model to measure the effectiveness of the crime prevention strategies at the University of Fort Hare (Alice campus). The aim of this study was to evaluate the sufficiency of surveillance and visibility, target hardening, maintenance and management at the University of Fort Hare, which contribute to the reduction of criminal activities around campus. The study further sought to evaluate the perceptions of students regarding their safety on campus by way of soliciting their experiences and observations. This study used the quantitative method, and questionnaires were distributed to the students in the Alice campus to collect data. The study found that whilst a marginal majority of students felt safe, a large proportion of students felt unsafe on campus. The study also found that students were dissatisfied with the service and found the security officers to be incompetent and un-trained. The study evaluated the sufficiency of crime prevention measures implemented within the university. One crucial aspect that emerged from the study is that CPTED principles were not sufficiently implemented to their fullest and the perception of the majority of students was that security personnel were not functioning in the way that they should, and measures such as adequate lighting were lacking. As a result, students felt unsafe on campus, especially during the night .The study concluded that there are clear increased feelings of vulnerability among students at the University of Fort Hare. The measures that are currently in place are not sufficient; therefore there is need for implementation of CPTED principles. It was recommended that the University increases number of CCTV surveillance cameras on campus, Social gathering places be surrounded by security guards for patrols, lighting recommendations that are modern and in proper design, keep up with repairs, make necessary replacements, paint, trim, current campus buildings e updated to meet recent CPTED practises etc.
- Full Text:
- Authors: Mditshwa, Abongile Sisanda
- Date: 2019
- Subjects: Crime prevention
- Language: English
- Type: Thesis , Masters , MSoc.Sci (Criminology)
- Identifier: http://hdl.handle.net/10353/17695 , vital:41137
- Description: The University of Fort Hare Alice campus experiences high crime rates. To address this problem, and add to the literature, this study applied the Crime Prevention through Environmental design (CPTED) model to measure the effectiveness of the crime prevention strategies at the University of Fort Hare (Alice campus). The aim of this study was to evaluate the sufficiency of surveillance and visibility, target hardening, maintenance and management at the University of Fort Hare, which contribute to the reduction of criminal activities around campus. The study further sought to evaluate the perceptions of students regarding their safety on campus by way of soliciting their experiences and observations. This study used the quantitative method, and questionnaires were distributed to the students in the Alice campus to collect data. The study found that whilst a marginal majority of students felt safe, a large proportion of students felt unsafe on campus. The study also found that students were dissatisfied with the service and found the security officers to be incompetent and un-trained. The study evaluated the sufficiency of crime prevention measures implemented within the university. One crucial aspect that emerged from the study is that CPTED principles were not sufficiently implemented to their fullest and the perception of the majority of students was that security personnel were not functioning in the way that they should, and measures such as adequate lighting were lacking. As a result, students felt unsafe on campus, especially during the night .The study concluded that there are clear increased feelings of vulnerability among students at the University of Fort Hare. The measures that are currently in place are not sufficient; therefore there is need for implementation of CPTED principles. It was recommended that the University increases number of CCTV surveillance cameras on campus, Social gathering places be surrounded by security guards for patrols, lighting recommendations that are modern and in proper design, keep up with repairs, make necessary replacements, paint, trim, current campus buildings e updated to meet recent CPTED practises etc.
- Full Text:
Evaluation of groundwater potential based on hybrid approach of geology, geophysics, and geoinformatics: Case study of Buffalo Catchment area, Eastern Cape, South Africa
- Authors: Owolabi,Solomon T
- Date: 2019
- Subjects: Hydrogeology Geology
- Language: English
- Type: Thesis , Doctoral , PhD (Geology)
- Identifier: http://hdl.handle.net/10353/12238 , vital:39218
- Description: This study focuses on the feasibility of exploring potential groundwater zones through assessment of catchment geo-hydrodynamic processes, using hydro-statistic principles and geographic information system-based approaches. The research work integrated analysis of hydrologic variables, geologic structures, and geomorpho-tectonic processes that provide information on spatial variability of hydrologic units in a watershed. The study is aimed at improving conceptual knowledge and presenting the technical feasibility of exploring potential groundwater zones through geo-hydrodynamic perspectives in hydrogeologically challenged environments. The study adopted a case design approach at the Buffalo hydrologic basin headwater in Eastern Cape, South Africa. The methods used in this study include: field mapping of geologic units and structures, digital processing of aeromagnetic map, cross-section profiling of borehole logs, auto-extraction of lineament, streamflow variability and recession assessment, geomorpho-tectonic analysis of surficial drainage pattern, vertical electrical sounding for imaging shallow subsurface layers, and geospatial integration of thematic maps of groundwater multi-influencing factors. The results indicate that the hydrogeological settings of Buffalo watershed comprised of good, moderate, fair, poor and very poor groundwater potential zones which cover 187 km2 , 338 km2 , 406 km2 , 185 km2 , and 121 km2 respectively. The results report that the groundwater system of Buffalo watershed is mainly hosted by the well-drained fractured dolerite and the shallow unconfined sandstone aquifer. The aquifer is bounded by two parallel impermeable valley walls in the north and south. Also, the Buffalo drainage system constitutes a variable head boundary as a groundwater discharge zone. The groundwater discharge which mostly occurs at the Tshoxa upper course, Mgqakwebe, Quencwe, Yellowwoods upper course and the Buffalo River center influence the status of the Buffalo River as a perennial river system. vi The groundwater recharge occurs through the networks of surficial lineaments and fractures concentrated on the sandstone lithosome, mostly in the northern half of the watershed. The surficial tectonic features trend in a WNW-ESE and E-W direction. The groundwater flow system is controlled by the subsurface lineaments which are oriented in west-northwest – eastsoutheast direction. Most of the groundwater recharge is driven by rain which is extreme at the north. The hydro-climatic pattern of the region influences the dendritic drainage system of Buffalo watershed. The geologic characterization and geomorpho-tectonic analysis indicate that the geologic settings are made up of upward-fining lithologic material and siliciclastic materials that were deposited as fill in paleochannels by braided and meandering fluvial systems. The variability in dissection property and the fluvial system indicates that Buffalo hydrologic and geomorphic systems are heterogeneous and complex. The possible impact of these variabilities aligns with the report of geoelectric sections which revealed the heterogeneity of the aquifer intrinsic properties and variability in groundwater yield. The electric resistivity tomography revealed the existence of a fault system and variation in the thickness of the aquifer. Hydrologic characterization indicates the vulnerability status of the rivers within the watershed. In particular, the Ngqokweni River is vulnerable to diminution while Quencwe River has the potential for a flash flood. Buffalo station is an important surface water capture zone. Delineation of groundwater potential zone should incorporate geologic, hydrologic, geophysical, geomorphotectonic, and environmental perspectives due to the inherent relationship among influencing factors. The study therefore identifies groundwater capture zones which can be further explored for groundwater development and to mitigate the stake of water shortage. The study therefore recommends the approach here to the department of water affairs for adoption to map the zones of groundwater potential at a regional scale. The study also provides resourceful information on vii groundwater recharge zones and therefore recommends that the environment and water stakeholders work together to protect the recharge zones from groundwater contamination due to land use
- Full Text:
- Authors: Owolabi,Solomon T
- Date: 2019
- Subjects: Hydrogeology Geology
- Language: English
- Type: Thesis , Doctoral , PhD (Geology)
- Identifier: http://hdl.handle.net/10353/12238 , vital:39218
- Description: This study focuses on the feasibility of exploring potential groundwater zones through assessment of catchment geo-hydrodynamic processes, using hydro-statistic principles and geographic information system-based approaches. The research work integrated analysis of hydrologic variables, geologic structures, and geomorpho-tectonic processes that provide information on spatial variability of hydrologic units in a watershed. The study is aimed at improving conceptual knowledge and presenting the technical feasibility of exploring potential groundwater zones through geo-hydrodynamic perspectives in hydrogeologically challenged environments. The study adopted a case design approach at the Buffalo hydrologic basin headwater in Eastern Cape, South Africa. The methods used in this study include: field mapping of geologic units and structures, digital processing of aeromagnetic map, cross-section profiling of borehole logs, auto-extraction of lineament, streamflow variability and recession assessment, geomorpho-tectonic analysis of surficial drainage pattern, vertical electrical sounding for imaging shallow subsurface layers, and geospatial integration of thematic maps of groundwater multi-influencing factors. The results indicate that the hydrogeological settings of Buffalo watershed comprised of good, moderate, fair, poor and very poor groundwater potential zones which cover 187 km2 , 338 km2 , 406 km2 , 185 km2 , and 121 km2 respectively. The results report that the groundwater system of Buffalo watershed is mainly hosted by the well-drained fractured dolerite and the shallow unconfined sandstone aquifer. The aquifer is bounded by two parallel impermeable valley walls in the north and south. Also, the Buffalo drainage system constitutes a variable head boundary as a groundwater discharge zone. The groundwater discharge which mostly occurs at the Tshoxa upper course, Mgqakwebe, Quencwe, Yellowwoods upper course and the Buffalo River center influence the status of the Buffalo River as a perennial river system. vi The groundwater recharge occurs through the networks of surficial lineaments and fractures concentrated on the sandstone lithosome, mostly in the northern half of the watershed. The surficial tectonic features trend in a WNW-ESE and E-W direction. The groundwater flow system is controlled by the subsurface lineaments which are oriented in west-northwest – eastsoutheast direction. Most of the groundwater recharge is driven by rain which is extreme at the north. The hydro-climatic pattern of the region influences the dendritic drainage system of Buffalo watershed. The geologic characterization and geomorpho-tectonic analysis indicate that the geologic settings are made up of upward-fining lithologic material and siliciclastic materials that were deposited as fill in paleochannels by braided and meandering fluvial systems. The variability in dissection property and the fluvial system indicates that Buffalo hydrologic and geomorphic systems are heterogeneous and complex. The possible impact of these variabilities aligns with the report of geoelectric sections which revealed the heterogeneity of the aquifer intrinsic properties and variability in groundwater yield. The electric resistivity tomography revealed the existence of a fault system and variation in the thickness of the aquifer. Hydrologic characterization indicates the vulnerability status of the rivers within the watershed. In particular, the Ngqokweni River is vulnerable to diminution while Quencwe River has the potential for a flash flood. Buffalo station is an important surface water capture zone. Delineation of groundwater potential zone should incorporate geologic, hydrologic, geophysical, geomorphotectonic, and environmental perspectives due to the inherent relationship among influencing factors. The study therefore identifies groundwater capture zones which can be further explored for groundwater development and to mitigate the stake of water shortage. The study therefore recommends the approach here to the department of water affairs for adoption to map the zones of groundwater potential at a regional scale. The study also provides resourceful information on vii groundwater recharge zones and therefore recommends that the environment and water stakeholders work together to protect the recharge zones from groundwater contamination due to land use
- Full Text:
Evaluation of pre-treatment methods on production of bioethanol from bagasse and sugarcane trash
- Authors: Dodo, Charlie Marembo
- Date: 2019
- Subjects: Lignocellulose
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15387 , vital:40403
- Description: A variety of methods have been researched on for bioethanol preparation from different feedstocks. Amongst the available feedstock, one such feedstock is the sugarcane plant. In most of the research on bioethanol preparation with sugarcane the sugary juice has been widely used, with the bagasse and trash having been discarded as waste. The “waste” bagasse and trash are usually removed and thrown away or burnt during harvesting or in sugar mills to supplement energy requirements. This research on lignocellulosic bagasse and trash was done so as not to discard them but to rather find ways in which to use this biomass constructively. Alternatives to burning that can potentially add value to this biomass need to be researched on by evaluating their hydrolysis content. The different lignocellulose pretreatment methods of concentrated and dilute acid pretreatment, with subsequent enzyme hydrolysis as well as alkali and oxidative alkali pretreatment with enzyme hydrolysis were experimented on the bagasse and trash for hydrolysis efficiency and effectiveness. There are two types of acid hydrolysis which were investigated on which are concentrated and dilute sulphuric acid pretreatments. Use of concentrated sulphuric acid yielded the highest amounts of reducing sugars but also resulted in the highest amounts of downstream process inhibitors formation. This resulted in the need for neutralisation steps which in turn increase the overall costs of using this method to obtain reducing sugars. It has however the advantage of occurring at a faster rate, within minutes or hours, than using biological enzymes which took days, up to 72 hours to obtain the highest reducing sugar amounts. Dilute sulphuric acid pretreatment offered the advantage of using fewer chemicals which are therefore less severe on equipment and result in fewer fermentation inhibitors being formed. Dilute sulphuric acid hydrolysis also takes a relatively shorter period than biological methods of pretreatment. A challenge of fermentation inhibitors formed during acid hydrolysis was countered by using the methods of overliming (calcium hydroxide) and comparing it to neutralization with sodium hydroxide. Alkali pretreatment with sodium hydroxide was researched on by applying different pretreatment concentrations during experiments on the lignocellulosic biomass. There was an increase in the available quantities of cellulose with a significant reduction in lignin with pretreatment. Alkali pretreatment proved effective in exposing the cellulose which made v more cellulose surface area available to cellulase enzymes for enzyme hydrolysis. The highest yield of reducing sugars was obtained from hydrolysates pretreated with 0.25 M sodium hydroxide for 60 min and a period of 72 h of enzyme hydrolysis. In general the longer the pretreatment time the more reducing sugars were produced from the enzyme hydrolysis. Alkali peroxide pretreatment also resulted in significant reductions in lignin quantities of lignocellulose material. In this method sodium hydroxide in combination with hydrogen peroxide were used in pretreating the biomass. Hydrolysates with even fewer fermentation inhibitors were produced as a result. The highest percentage concentration of cellulose of 63% (g/g) was achieved after pretreatment of bagasse with 5% alkali hydrogen peroxide and trash with 0,25M sodium hydroxide pretreatment. Pretreatment of biomass using alkali with subsequent enzymatic hydrolysis gave the highest yields of fermentable sugars of 38% (g/g) using 7% (v/v) alkali peroxide pre-treated trash than 36% (g/g) for 5% (v/v) with the least inhibitors. Reducing sugar yields of 25% (g/g) and 22% (g/g) were obtained after pretreatment with concentrated and dilute acid respectively. Neutralization of the acid hydrolysates was necessary to reduce inhibitors formed with neutralisation by sodium hydroxide resulting in low dilutions and loss of fermentable sugars as unlike in the case of overliming. Subsequent steps of fermenting the reducing sugars resulting from pretreatment into bioethanol were based on using the yeast Saccharomyces cerevisae. Pretreatment hydrolysates from alkali peroxide experiments produced higher bioethanol yields of 13.7 (g/l) after enzyme hydrolysates versus 6.9 (g/l) bioethanol from dilute acid hydrolyzates. A comparison of the effects of time showed there was more bioethanol yield of 13.7 (g/l) after 72 h of fermentation with the yeast versus 7.0 (g/l) bioethanol after pretreatment for 24 h. The only drawback is the longer fermentation period which thus reduces the process and so reduces the value of the increase in yield
- Full Text:
- Authors: Dodo, Charlie Marembo
- Date: 2019
- Subjects: Lignocellulose
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15387 , vital:40403
- Description: A variety of methods have been researched on for bioethanol preparation from different feedstocks. Amongst the available feedstock, one such feedstock is the sugarcane plant. In most of the research on bioethanol preparation with sugarcane the sugary juice has been widely used, with the bagasse and trash having been discarded as waste. The “waste” bagasse and trash are usually removed and thrown away or burnt during harvesting or in sugar mills to supplement energy requirements. This research on lignocellulosic bagasse and trash was done so as not to discard them but to rather find ways in which to use this biomass constructively. Alternatives to burning that can potentially add value to this biomass need to be researched on by evaluating their hydrolysis content. The different lignocellulose pretreatment methods of concentrated and dilute acid pretreatment, with subsequent enzyme hydrolysis as well as alkali and oxidative alkali pretreatment with enzyme hydrolysis were experimented on the bagasse and trash for hydrolysis efficiency and effectiveness. There are two types of acid hydrolysis which were investigated on which are concentrated and dilute sulphuric acid pretreatments. Use of concentrated sulphuric acid yielded the highest amounts of reducing sugars but also resulted in the highest amounts of downstream process inhibitors formation. This resulted in the need for neutralisation steps which in turn increase the overall costs of using this method to obtain reducing sugars. It has however the advantage of occurring at a faster rate, within minutes or hours, than using biological enzymes which took days, up to 72 hours to obtain the highest reducing sugar amounts. Dilute sulphuric acid pretreatment offered the advantage of using fewer chemicals which are therefore less severe on equipment and result in fewer fermentation inhibitors being formed. Dilute sulphuric acid hydrolysis also takes a relatively shorter period than biological methods of pretreatment. A challenge of fermentation inhibitors formed during acid hydrolysis was countered by using the methods of overliming (calcium hydroxide) and comparing it to neutralization with sodium hydroxide. Alkali pretreatment with sodium hydroxide was researched on by applying different pretreatment concentrations during experiments on the lignocellulosic biomass. There was an increase in the available quantities of cellulose with a significant reduction in lignin with pretreatment. Alkali pretreatment proved effective in exposing the cellulose which made v more cellulose surface area available to cellulase enzymes for enzyme hydrolysis. The highest yield of reducing sugars was obtained from hydrolysates pretreated with 0.25 M sodium hydroxide for 60 min and a period of 72 h of enzyme hydrolysis. In general the longer the pretreatment time the more reducing sugars were produced from the enzyme hydrolysis. Alkali peroxide pretreatment also resulted in significant reductions in lignin quantities of lignocellulose material. In this method sodium hydroxide in combination with hydrogen peroxide were used in pretreating the biomass. Hydrolysates with even fewer fermentation inhibitors were produced as a result. The highest percentage concentration of cellulose of 63% (g/g) was achieved after pretreatment of bagasse with 5% alkali hydrogen peroxide and trash with 0,25M sodium hydroxide pretreatment. Pretreatment of biomass using alkali with subsequent enzymatic hydrolysis gave the highest yields of fermentable sugars of 38% (g/g) using 7% (v/v) alkali peroxide pre-treated trash than 36% (g/g) for 5% (v/v) with the least inhibitors. Reducing sugar yields of 25% (g/g) and 22% (g/g) were obtained after pretreatment with concentrated and dilute acid respectively. Neutralization of the acid hydrolysates was necessary to reduce inhibitors formed with neutralisation by sodium hydroxide resulting in low dilutions and loss of fermentable sugars as unlike in the case of overliming. Subsequent steps of fermenting the reducing sugars resulting from pretreatment into bioethanol were based on using the yeast Saccharomyces cerevisae. Pretreatment hydrolysates from alkali peroxide experiments produced higher bioethanol yields of 13.7 (g/l) after enzyme hydrolysates versus 6.9 (g/l) bioethanol from dilute acid hydrolyzates. A comparison of the effects of time showed there was more bioethanol yield of 13.7 (g/l) after 72 h of fermentation with the yeast versus 7.0 (g/l) bioethanol after pretreatment for 24 h. The only drawback is the longer fermentation period which thus reduces the process and so reduces the value of the increase in yield
- Full Text:
Evaluation of some Eastern beach bacteria for high activity laccase production
- Authors: Ntlatywa, Nonkolisi
- Date: 2019
- Subjects: Laccase
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/${Handle} , vital:40025
- Description: Laccases are multi-copper oxidases endowed with huge applicability and versatility. They are found in nature, fungi, insects, archaea and bacteria; however, there is a dearth of information regarding bacterial laccases. Thus, the search for novel bacterial laccases becomes crucial. Therefore, the broad aim of the study was the assessment of some bacteria on marine water isolated from Eastern beach for the production of high activity laccases. In this study, marine water samples obtained from the Eastern beach in East London were investigated for bacterial laccase-producing isolates. The samples were analysed using different microbiological media and varied substrates via qualitative methods. The isolates were tested for laccase activity using ABTS (2, 2’- azinobis 3-ethyl-benzothiazoline-6-sulphonate), as a substrate. The present study also dealt with the optimization of culture conditions for laccase production and characterization of laccase. A total of forty-eight (48) bacterial isolates were obtained, which were identified based on their morphological and cultural characteristics. Many of the isolates (42) were categorized as Gram positive and a few (6) as Gram negative upon subjecting to microscopic examination. Result showed that on average, laccase activity ranged from 5.33 – 6.5 U/L as demonstrated by three bacterial isolates (Bacillus sp. NFN1, Bacillus sp. NLN and Escherichia coli LO). Laccase production was highly enhanced by the supplementation with vanillic acid by Bacillus sp. strain NLN with yield of 15.83 ± 0.7 U/L, Bacillus sp. strain NFN1, 12.72 ± 0.21 U/L. However, Escherichia coli LO demonstrated enhanced laccase production with guaiacol (12.84 ± 1.12 U/L) followed by ferrulic acid (12.8 ± 0.36 U/L). While optimization results revealed that the laccase yield was enhanced under the following conditions: 72 h of incubation, pH 5, 0.5mg/L lactose as a carbon source, 1. 5 mg/L yeast extract as a nitrogen source as well as in the presence of corn stover and mandarin peels as lignocellulosic substrates depending on the bacteria.The time course and stability of laccase against temperature, pH, metal ions and organic solvents were investigated using previously described methods. In the findings obtained for the time course, the laccase activity ranged from 22.2- 23.98 U/L. In general, the optimum parameters for the optimum laccase activities depended on the bacterial isolates and the time of incubation and included 80 °C and 70 °C, pH 3 and 9 while, the thermal stability was over 100%. Overall, NaCl, ZnSO4, NiCl and 20% acetone demonstrated positive effect on the residual activity of the laccases of all the bacterial isolates (Bacillus sp. NFN1, Bacillus v sp. NLN and Escherichia coli LO). In conclusion the findings of the study, suggest that marine water of the Eastern beach is a rich source for laccase producing bacteria with potential of high activity.
- Full Text:
- Authors: Ntlatywa, Nonkolisi
- Date: 2019
- Subjects: Laccase
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/${Handle} , vital:40025
- Description: Laccases are multi-copper oxidases endowed with huge applicability and versatility. They are found in nature, fungi, insects, archaea and bacteria; however, there is a dearth of information regarding bacterial laccases. Thus, the search for novel bacterial laccases becomes crucial. Therefore, the broad aim of the study was the assessment of some bacteria on marine water isolated from Eastern beach for the production of high activity laccases. In this study, marine water samples obtained from the Eastern beach in East London were investigated for bacterial laccase-producing isolates. The samples were analysed using different microbiological media and varied substrates via qualitative methods. The isolates were tested for laccase activity using ABTS (2, 2’- azinobis 3-ethyl-benzothiazoline-6-sulphonate), as a substrate. The present study also dealt with the optimization of culture conditions for laccase production and characterization of laccase. A total of forty-eight (48) bacterial isolates were obtained, which were identified based on their morphological and cultural characteristics. Many of the isolates (42) were categorized as Gram positive and a few (6) as Gram negative upon subjecting to microscopic examination. Result showed that on average, laccase activity ranged from 5.33 – 6.5 U/L as demonstrated by three bacterial isolates (Bacillus sp. NFN1, Bacillus sp. NLN and Escherichia coli LO). Laccase production was highly enhanced by the supplementation with vanillic acid by Bacillus sp. strain NLN with yield of 15.83 ± 0.7 U/L, Bacillus sp. strain NFN1, 12.72 ± 0.21 U/L. However, Escherichia coli LO demonstrated enhanced laccase production with guaiacol (12.84 ± 1.12 U/L) followed by ferrulic acid (12.8 ± 0.36 U/L). While optimization results revealed that the laccase yield was enhanced under the following conditions: 72 h of incubation, pH 5, 0.5mg/L lactose as a carbon source, 1. 5 mg/L yeast extract as a nitrogen source as well as in the presence of corn stover and mandarin peels as lignocellulosic substrates depending on the bacteria.The time course and stability of laccase against temperature, pH, metal ions and organic solvents were investigated using previously described methods. In the findings obtained for the time course, the laccase activity ranged from 22.2- 23.98 U/L. In general, the optimum parameters for the optimum laccase activities depended on the bacterial isolates and the time of incubation and included 80 °C and 70 °C, pH 3 and 9 while, the thermal stability was over 100%. Overall, NaCl, ZnSO4, NiCl and 20% acetone demonstrated positive effect on the residual activity of the laccases of all the bacterial isolates (Bacillus sp. NFN1, Bacillus v sp. NLN and Escherichia coli LO). In conclusion the findings of the study, suggest that marine water of the Eastern beach is a rich source for laccase producing bacteria with potential of high activity.
- Full Text:
Examining educators’ strategies for promoting science learning and science literacy among grade 9 learners in a South African Rural Education District
- Authors: Mtsi, Nomxolisi
- Date: 2019
- Subjects: Science -- Study and teaching (Elementary) Children's literature in science education
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/16150 , vital:40673
- Description: Science learning and Science Literacy (SL) play a crucial role in preparing learners to participate in the country’s economy with the relevant knowledge, higher order thinking and analytical reasoning to solve day-to-day problems. The purpose of this research was to examine educators’ strategies for promoting science learning and SL among grade 9 learners in a rural education district in South Africa’s Eastern Cape Province. Learning of science and promotion of SL complement each other and therefore science educators’ strategies are pertinent. The study used pragmatic paradigm and the mixed method approach and was informed by cognitive and social constructivism as theoretical frameworks. For data collection, the study used convenience sampling based on the proximity and comparative ease of the researcher to reach the rural schools to select 30 out of 67 schools spread over six out of the eight circuits in the selected education district. On the other hand, purposive sampling was used for the selection of learners by their educators based on academic performance, top, average and below average achievers. Since each school had only one grade 9 science educator, 30 grade 9 science educators from the selected 30 schools formed the sample for quantitative data. Out of these 30, 10 educators who volunteered first for interviews and gave permission for being observed in their classrooms were selected for qualitative data collection. Three learners in each of the 10 schools from which the educators for qualitative data collection were selected, constituted the learners’ sample (30 learners). While data were collected through questionnaires, interviews and observations from educators, data from learners were collected through focus group (FG) interviews. The questionnaire was structured in order to gather educators’ biographical data as well as information on educators’ strategies to promote science learning and SL. The interview schedule was similar to the questionnaire but biographical data were excluded. Observations focused on educators’ strategies for science learning, SL and assessments. The data from the questionnaire were descriptively analysed and the qualitative and transcribed observation data were thematically analysed. Final conclusions were drawn based on the triangulated data. Major findings showed that the strategies which the educators employed in the descending order of use were: Investigation at 97percent; Discussion, Presentation and Project, each at 93percent; Problem solving at 90percent; Demonstration and Question-Answer, each at 87percent; Case study and Brainstorming, each at 77percent; Role-play at 63percent; Lecture at 57percent; Modelling at 47percent, Inquiry at 27percent and Simulation at 23percent. Findings also revealed the strengths and weaknesses of the strategies used by educators. Some of the strengths were: promotion of interactive learning; stimulation of research skills; enhancement of critical thinking and development of confidence through participation. Some of the weaknesses were: learners’ tendency to rely on others; lack of resources hindering learning and promotion of plagiarism. The study recommends that all stakeholders must work together to achieve good quality education. District and Provincial officers ought to track and monitor the science curriculum implementation. Subject specialists, educator subject committees and cluster leaders must also be active in strategic planning for enhancing SL in schools by putting forward their inputs and adopting consensus-based ones. A framework for driving science content with pedagogical content knowledge and practicals-driven strategy for enhancing science content knowledge is proposed.
- Full Text:
- Authors: Mtsi, Nomxolisi
- Date: 2019
- Subjects: Science -- Study and teaching (Elementary) Children's literature in science education
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/16150 , vital:40673
- Description: Science learning and Science Literacy (SL) play a crucial role in preparing learners to participate in the country’s economy with the relevant knowledge, higher order thinking and analytical reasoning to solve day-to-day problems. The purpose of this research was to examine educators’ strategies for promoting science learning and SL among grade 9 learners in a rural education district in South Africa’s Eastern Cape Province. Learning of science and promotion of SL complement each other and therefore science educators’ strategies are pertinent. The study used pragmatic paradigm and the mixed method approach and was informed by cognitive and social constructivism as theoretical frameworks. For data collection, the study used convenience sampling based on the proximity and comparative ease of the researcher to reach the rural schools to select 30 out of 67 schools spread over six out of the eight circuits in the selected education district. On the other hand, purposive sampling was used for the selection of learners by their educators based on academic performance, top, average and below average achievers. Since each school had only one grade 9 science educator, 30 grade 9 science educators from the selected 30 schools formed the sample for quantitative data. Out of these 30, 10 educators who volunteered first for interviews and gave permission for being observed in their classrooms were selected for qualitative data collection. Three learners in each of the 10 schools from which the educators for qualitative data collection were selected, constituted the learners’ sample (30 learners). While data were collected through questionnaires, interviews and observations from educators, data from learners were collected through focus group (FG) interviews. The questionnaire was structured in order to gather educators’ biographical data as well as information on educators’ strategies to promote science learning and SL. The interview schedule was similar to the questionnaire but biographical data were excluded. Observations focused on educators’ strategies for science learning, SL and assessments. The data from the questionnaire were descriptively analysed and the qualitative and transcribed observation data were thematically analysed. Final conclusions were drawn based on the triangulated data. Major findings showed that the strategies which the educators employed in the descending order of use were: Investigation at 97percent; Discussion, Presentation and Project, each at 93percent; Problem solving at 90percent; Demonstration and Question-Answer, each at 87percent; Case study and Brainstorming, each at 77percent; Role-play at 63percent; Lecture at 57percent; Modelling at 47percent, Inquiry at 27percent and Simulation at 23percent. Findings also revealed the strengths and weaknesses of the strategies used by educators. Some of the strengths were: promotion of interactive learning; stimulation of research skills; enhancement of critical thinking and development of confidence through participation. Some of the weaknesses were: learners’ tendency to rely on others; lack of resources hindering learning and promotion of plagiarism. The study recommends that all stakeholders must work together to achieve good quality education. District and Provincial officers ought to track and monitor the science curriculum implementation. Subject specialists, educator subject committees and cluster leaders must also be active in strategic planning for enhancing SL in schools by putting forward their inputs and adopting consensus-based ones. A framework for driving science content with pedagogical content knowledge and practicals-driven strategy for enhancing science content knowledge is proposed.
- Full Text:
Examining the cognitive learning effect on grade 10 students’ performance in physical science in selected schools in Umgungudlovu Education District
- Authors: Olorunda, David Oluyemi
- Date: 2019
- Subjects: Cognitive learning Learning, Psychology of
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/16577 , vital:40733
- Description: The study employed a quantitative as well as a qualitative approach. Four public schools in the uMgungundlovu District participated in this study. The identities of all respondents were protected. The sample included 154 participants, four Physical science educators and four Heads of department selected purposefully across four secondary schools. The study found that themajority of the learners reported that they have interest and positive attitude for Physical science but most of learners indicated they understanding when English is used as a medium of instruction in teaching Physical science but someprefer other languages to be used for their understanding. It was obvious that most parents lacked knowledge about Physical Sciences and could not assist their children. It was also indicated that their teachers are approachable especially for personal explanation giving them attention whenever they ask for assistance, creating an atmosphere that makes it easy for the learner to learn. The study reveals that learners had a high rate of their teachers motivating them enough to like physical science, by using different method for them to understand the subject and majority follow their teacher’s method but only few learners use their own method.The educators and the heads of departments confirmed that they do give the learners different method. Many learners understands what they are taught using diagrams and illustrations in order to make them understand in all subject study showed that the head of departments indicatedthat they do check the way the teachers teach for effectiveness on the part of the teachers in ,line with the curriculum assessment policy statement from the department of education .The educators said they receive their educational in- service training and done yearly at the department of education workshop and moderations. Findings from this research reveals that learners learns one way or the other through all the strategies of learning but most learners affirms that they learn more rehearsal where they have to repeat things more and that the physical sciences teacher should have more time and explain thoroughly particular term, using diagrams and illustrations in order to make them understand in all subject. The study concluded by giving general recommendations for improving learners’ participation and attitudes towards learning physical Science. Recommendations for improvement in the areas identified were III provided and topics for future research on the curriculum of Grade 10 Physical Sciences were suggested in order to improve on physical science.
- Full Text:
- Authors: Olorunda, David Oluyemi
- Date: 2019
- Subjects: Cognitive learning Learning, Psychology of
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/16577 , vital:40733
- Description: The study employed a quantitative as well as a qualitative approach. Four public schools in the uMgungundlovu District participated in this study. The identities of all respondents were protected. The sample included 154 participants, four Physical science educators and four Heads of department selected purposefully across four secondary schools. The study found that themajority of the learners reported that they have interest and positive attitude for Physical science but most of learners indicated they understanding when English is used as a medium of instruction in teaching Physical science but someprefer other languages to be used for their understanding. It was obvious that most parents lacked knowledge about Physical Sciences and could not assist their children. It was also indicated that their teachers are approachable especially for personal explanation giving them attention whenever they ask for assistance, creating an atmosphere that makes it easy for the learner to learn. The study reveals that learners had a high rate of their teachers motivating them enough to like physical science, by using different method for them to understand the subject and majority follow their teacher’s method but only few learners use their own method.The educators and the heads of departments confirmed that they do give the learners different method. Many learners understands what they are taught using diagrams and illustrations in order to make them understand in all subject study showed that the head of departments indicatedthat they do check the way the teachers teach for effectiveness on the part of the teachers in ,line with the curriculum assessment policy statement from the department of education .The educators said they receive their educational in- service training and done yearly at the department of education workshop and moderations. Findings from this research reveals that learners learns one way or the other through all the strategies of learning but most learners affirms that they learn more rehearsal where they have to repeat things more and that the physical sciences teacher should have more time and explain thoroughly particular term, using diagrams and illustrations in order to make them understand in all subject. The study concluded by giving general recommendations for improving learners’ participation and attitudes towards learning physical Science. Recommendations for improvement in the areas identified were III provided and topics for future research on the curriculum of Grade 10 Physical Sciences were suggested in order to improve on physical science.
- Full Text:
Examining the position of black South African accents in English in Drama Departments within institutions in the Western Cape Province: a case study
- Authors: Seekoe, Leanetse Thato
- Date: 2019
- Subjects: English language
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10353/16397 , vital:40716
- Description: This dissertation examines the treatment and perceptions of black South African accents in English in the drama departments of specific institutions of higher learning in the Western Cape Province. The researcher is concerned with the handling of African native cultural identities in the curriculum policy of Drama Departments in higher education institutions in the Western Cape Province. Although the focus of the research is on the institutions that are based in the Western Cape Province, the subjects that are being discussed are representatives of black people in South Africa as a whole. To portray the issue of accents appropriately, the examination does often refer to language as a relatable concept. In the literature of this dissertation, there is ample support for the claim that language differences and disagreements in South Africa are due to the historical and socio-political stance of the European native. After examining the topic of power and social control, the study points out that the native is rarely in control of the interests of the European descendent. Thus, the relationship between the two is immediately assumed before it has even been established. For the purpose of this discussion, ambiguity is appreciated when intimacy between cultures evolves for the greater good. However, it is disregarded when individual voices are diluted into neutral or standard representations of a language. And so the act of reducing black South African accents in English to mirror that of the Euro-American culture robs the natives of their individuality and imprisons them into cultural assimilation. Ultimately, this study intends to identify different groups of black South Africans who speak English with accents. For clarity has divided into two separate groups namely privileged and unprivileged. Accents that are appreciated by white South African English speakers are considered to be privileged, while accents that carry the undertones of any mother-tongue language are recognised in this research study as unprivileged. The study wishes to present this phenomenon as a social issue that will negatively affect the growth of indigenous participation in performance spaces in the Western Cape which the study assumes as the context for the research. The implication of the study is to potentially eliminate issues of inferiority to those black South African accents that have been regarded as less valuable to dramatic performances in the Western Cape, to the extent that platforms of dramatic performances will broaden in order for black South African accents to be prioritised with relevant usage
- Full Text:
- Authors: Seekoe, Leanetse Thato
- Date: 2019
- Subjects: English language
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10353/16397 , vital:40716
- Description: This dissertation examines the treatment and perceptions of black South African accents in English in the drama departments of specific institutions of higher learning in the Western Cape Province. The researcher is concerned with the handling of African native cultural identities in the curriculum policy of Drama Departments in higher education institutions in the Western Cape Province. Although the focus of the research is on the institutions that are based in the Western Cape Province, the subjects that are being discussed are representatives of black people in South Africa as a whole. To portray the issue of accents appropriately, the examination does often refer to language as a relatable concept. In the literature of this dissertation, there is ample support for the claim that language differences and disagreements in South Africa are due to the historical and socio-political stance of the European native. After examining the topic of power and social control, the study points out that the native is rarely in control of the interests of the European descendent. Thus, the relationship between the two is immediately assumed before it has even been established. For the purpose of this discussion, ambiguity is appreciated when intimacy between cultures evolves for the greater good. However, it is disregarded when individual voices are diluted into neutral or standard representations of a language. And so the act of reducing black South African accents in English to mirror that of the Euro-American culture robs the natives of their individuality and imprisons them into cultural assimilation. Ultimately, this study intends to identify different groups of black South Africans who speak English with accents. For clarity has divided into two separate groups namely privileged and unprivileged. Accents that are appreciated by white South African English speakers are considered to be privileged, while accents that carry the undertones of any mother-tongue language are recognised in this research study as unprivileged. The study wishes to present this phenomenon as a social issue that will negatively affect the growth of indigenous participation in performance spaces in the Western Cape which the study assumes as the context for the research. The implication of the study is to potentially eliminate issues of inferiority to those black South African accents that have been regarded as less valuable to dramatic performances in the Western Cape, to the extent that platforms of dramatic performances will broaden in order for black South African accents to be prioritised with relevant usage
- Full Text:
Examining the teaching of natural sciences concepts to English second language speakers in selected primary schools in the East London Education District
- Authors: Kumanda, Nomaroma
- Date: 2019
- Subjects: Science -- Study and teaching
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/15925 , vital:40564
- Description: The study sought to examine the teaching of Natural Sciences (NS) concepts to English second language speakers in selected primary schools. Grade 7 was chosen for the investigation as it precedes the last class at primary school. The researcher investigated the teaching and learning of Natural sciences concepts. A mixed method design was used. The research questions focused on the teaching of NS, learner-centred strategies used, challenges encountered, strategies employed by teachers when teaching NS, and the implications for science education.The purpose was to examine the teaching of Natural Sciences concepts to English second language speakers in selected primary schools in the East London Education District. Data were collected from grade 7 teachers and learners in selected township schools in East London, by means of semi-structured interviews, questionnaires and focus groups. Semi-structured questionnaires were administered to teachers and learners, individual interviews were conducted with NS head of department, focus group and interviews were held with grade 7 NS learners. Quantitative and qualitative data were independently analysed and merged at the interpretation stage for triangulation of results. The questions were grouped according to their themes. The researcher’s findings revealed that teachers linked the teaching of NS concepts by showing the teaching skills. Teachers used code-switching for learners to understand the scientific concepts for positive attitude to improve the learner performance. Teachers experienced problems using English as a Language of Learning and Teaching (LoLT) while teaching NS concepts, teachers’ understanding of NS influenced their ability to implement of transformational curriculum, but learners did not benefit much when learning science in English Language and those policies were designed by the Department of Education without teacher involvement. The study concluded by noting that It emerged that teachers and learners experienced difficulties in teaching and learning of the NS concepts.
- Full Text:
- Authors: Kumanda, Nomaroma
- Date: 2019
- Subjects: Science -- Study and teaching
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/15925 , vital:40564
- Description: The study sought to examine the teaching of Natural Sciences (NS) concepts to English second language speakers in selected primary schools. Grade 7 was chosen for the investigation as it precedes the last class at primary school. The researcher investigated the teaching and learning of Natural sciences concepts. A mixed method design was used. The research questions focused on the teaching of NS, learner-centred strategies used, challenges encountered, strategies employed by teachers when teaching NS, and the implications for science education.The purpose was to examine the teaching of Natural Sciences concepts to English second language speakers in selected primary schools in the East London Education District. Data were collected from grade 7 teachers and learners in selected township schools in East London, by means of semi-structured interviews, questionnaires and focus groups. Semi-structured questionnaires were administered to teachers and learners, individual interviews were conducted with NS head of department, focus group and interviews were held with grade 7 NS learners. Quantitative and qualitative data were independently analysed and merged at the interpretation stage for triangulation of results. The questions were grouped according to their themes. The researcher’s findings revealed that teachers linked the teaching of NS concepts by showing the teaching skills. Teachers used code-switching for learners to understand the scientific concepts for positive attitude to improve the learner performance. Teachers experienced problems using English as a Language of Learning and Teaching (LoLT) while teaching NS concepts, teachers’ understanding of NS influenced their ability to implement of transformational curriculum, but learners did not benefit much when learning science in English Language and those policies were designed by the Department of Education without teacher involvement. The study concluded by noting that It emerged that teachers and learners experienced difficulties in teaching and learning of the NS concepts.
- Full Text:
experiences of female sex workers in Buffalo City Metropolitan Municipality, Eastern Cape
- Authors: Gcina, Boniswa Letticia
- Date: 2019
- Subjects: Prostitutes
- Language: English
- Type: Thesis , Masters , MPH
- Identifier: http://hdl.handle.net/10353/16730 , vital:40768
- Description: The phenomenon of female sex workers in South Africa is yet to be understood from both the cultural and legal perspectives. This gap leads to various challenges experienced by female sex workers in the country. The purpose of this study was to explore the experiences of female sex workers in Buffalo City Metropolitan, Eastern Cape Province. A descriptive phenomenological design was used to gain in-depth understanding and knowledge on the experiences of female sex workers’ in reality and social context. The study targeted female sex workers aged between 18-49 years for interviews. Purposive sampling technique was used to recruit female sex workers and four focus groups of five members in each group were interviewed to collect data. Due to the sensitivity of the research topic, ethical approvals were sought and granted by University of Fort Hare Research Ethics Committee and the Eastern Cape Department of Health. Further, informed consent was obtained from study participants before data collection begun. Data analysis was done by using Tesch’ method steps. The findings indicated that in Buffalo City Metropolitan the female sex workers were experiencing human rights violation, stigma and discrimination, they were at risk of contracting HIV due to the nature of their work, and they were at risk of being in conflict with the law due to the nature of sex work in South Africa. The study recommends on the decriminalization of sex work in order to decrease rate of violence, rape and exploitation of female sex workers; the closure of all Illegal brothels as they promote drugs and substance abuse among this vulnerable group; and provision of counselling sessions for female sex workers by the Department of Social Welfare. The study concludes that peer educators training and embarking on campaigns in the community, media and social networks to promote ‘Anti-violence against sex workers’ is necessary. Therefore, the female sex workers need to be protected by police from any form of abuse and violence by the community, clients and pimps. This can address the psychological stress displayed by female sex workers in the studydomain
- Full Text:
- Authors: Gcina, Boniswa Letticia
- Date: 2019
- Subjects: Prostitutes
- Language: English
- Type: Thesis , Masters , MPH
- Identifier: http://hdl.handle.net/10353/16730 , vital:40768
- Description: The phenomenon of female sex workers in South Africa is yet to be understood from both the cultural and legal perspectives. This gap leads to various challenges experienced by female sex workers in the country. The purpose of this study was to explore the experiences of female sex workers in Buffalo City Metropolitan, Eastern Cape Province. A descriptive phenomenological design was used to gain in-depth understanding and knowledge on the experiences of female sex workers’ in reality and social context. The study targeted female sex workers aged between 18-49 years for interviews. Purposive sampling technique was used to recruit female sex workers and four focus groups of five members in each group were interviewed to collect data. Due to the sensitivity of the research topic, ethical approvals were sought and granted by University of Fort Hare Research Ethics Committee and the Eastern Cape Department of Health. Further, informed consent was obtained from study participants before data collection begun. Data analysis was done by using Tesch’ method steps. The findings indicated that in Buffalo City Metropolitan the female sex workers were experiencing human rights violation, stigma and discrimination, they were at risk of contracting HIV due to the nature of their work, and they were at risk of being in conflict with the law due to the nature of sex work in South Africa. The study recommends on the decriminalization of sex work in order to decrease rate of violence, rape and exploitation of female sex workers; the closure of all Illegal brothels as they promote drugs and substance abuse among this vulnerable group; and provision of counselling sessions for female sex workers by the Department of Social Welfare. The study concludes that peer educators training and embarking on campaigns in the community, media and social networks to promote ‘Anti-violence against sex workers’ is necessary. Therefore, the female sex workers need to be protected by police from any form of abuse and violence by the community, clients and pimps. This can address the psychological stress displayed by female sex workers in the studydomain
- Full Text:
Exploring barriers to the legal adoption of orphaned and vulnerable children amongst the amaXhosa in Queenstown
- Authors: Xabe, Koleka Beauty
- Date: 2019
- Subjects: Adoption , Orphans , Children -- Legal status, laws, etc.
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/17597 , vital:41102
- Description: This study aimed at gaining insights into the barriers that prevent the legal adoption of vulnerable children amongst the amaXhosa in East London and Queenstown. To this end, it examined the knowledge and understanding of amaXhosa people regarding adoption as a permanent placement option for children. The method of investigation was qualitative in nature, as this approach provides a deep description of the phenomenon under study; in this case, the barriers to the legal adoption of vulnerable children amongst the amaXhosa in Queenstown area. Individual interviews were conducted with twelve participants – ten females and two males. Interviewees were foster parents and temporary safe care home employees employed by the Department of Social Development in Queenstown. The study adopted the ‘Circle of Courage’ and the ecological theoretical frameworks. Individual interviews were tape recoded and the transcripts were subject to interpretive analysis according to the guidelines provided by Terre Blanche, Durrheim and Painter (2006). Interviews tended to focus largely on the matter of black children being raised by white parents, people in the same sex domestic relationship, investigated interviewee’s beliefs about adoption within different cultures and its impact on the adoptee. The study also investigated the availability and accessibility of adoption awareness campaigns in their community. The responses of the participants were based on their own experiences, attitudes and external social worker’s report which attained along the process of caring for the (orphan and vulnerable children) OVC’s. The qualitative analysis of the research displays there are various reasons that leads to the decision for not to consider adoption as a placement option for orphan and vulnerable children among the AmaXhosa families. The findings showed that; reasons were both financial constraints, lack of time, race and culture. Despite their decisions and lack of resources, some of the parents appeared to be interested in the option only if they can be provided with support by government. It is evident that the permanent placement (adoption) is the only placement option that can X provide a child with legal rights to a family and award a parent with legal responsibility to a child.
- Full Text:
- Authors: Xabe, Koleka Beauty
- Date: 2019
- Subjects: Adoption , Orphans , Children -- Legal status, laws, etc.
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/17597 , vital:41102
- Description: This study aimed at gaining insights into the barriers that prevent the legal adoption of vulnerable children amongst the amaXhosa in East London and Queenstown. To this end, it examined the knowledge and understanding of amaXhosa people regarding adoption as a permanent placement option for children. The method of investigation was qualitative in nature, as this approach provides a deep description of the phenomenon under study; in this case, the barriers to the legal adoption of vulnerable children amongst the amaXhosa in Queenstown area. Individual interviews were conducted with twelve participants – ten females and two males. Interviewees were foster parents and temporary safe care home employees employed by the Department of Social Development in Queenstown. The study adopted the ‘Circle of Courage’ and the ecological theoretical frameworks. Individual interviews were tape recoded and the transcripts were subject to interpretive analysis according to the guidelines provided by Terre Blanche, Durrheim and Painter (2006). Interviews tended to focus largely on the matter of black children being raised by white parents, people in the same sex domestic relationship, investigated interviewee’s beliefs about adoption within different cultures and its impact on the adoptee. The study also investigated the availability and accessibility of adoption awareness campaigns in their community. The responses of the participants were based on their own experiences, attitudes and external social worker’s report which attained along the process of caring for the (orphan and vulnerable children) OVC’s. The qualitative analysis of the research displays there are various reasons that leads to the decision for not to consider adoption as a placement option for orphan and vulnerable children among the AmaXhosa families. The findings showed that; reasons were both financial constraints, lack of time, race and culture. Despite their decisions and lack of resources, some of the parents appeared to be interested in the option only if they can be provided with support by government. It is evident that the permanent placement (adoption) is the only placement option that can X provide a child with legal rights to a family and award a parent with legal responsibility to a child.
- Full Text:
Exploring how millennials prepare their content for social media: a narrative study of online users
- Authors: Coleman, Robyn-Ann
- Date: 2019
- Subjects: Generation Y
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/17542 , vital:41089
- Description: Millennials, (born between 1982 to 1996) referred to as ‘techno savvy’, are the largest and most highly educated generational cohort in this time. Introduced to technology early on in their lives has lead to a prolific use of social media. As possible future leaders, millennials also have the highest employment turnaround. The increased turnaround is because millennials are always on the lookout for better opportunities and purpose to meet their need for accelerated growth together with their need to belong. Social media platforms have the propensity to provide instantaneous and gratifying rewards, through various ways including self disclosure online. As millennials are seeking purpose and reward, communicating on a social media platform is way more rewarding than attempting to communicate. With the arena of face to face communication shifting to online communication this is becoming more amplified. This research study explored how millennials prepared to portray their content on Facebook and Instagram. A biographical narrative approach effectively acquired 15 individual millennials in-depth co-constructed narratives on how they prepare their online social media, and analysed through contexualising the co-constructed into a re-storied narrative with Connelly & Clandinin’s (2009) narrative analysis approach. Goffman’s dramaturgical approach, a conceptual framework based on micro social interaction was used to obtain insight into millennials online portrayal. The findings revealed that all of the participants utilised one or more of the following dramaturgical metaphors to portray themselves; a) they utilised props and /or filters to set the environment and filter their image online, b) they managed their impressions by being intentional in the selection of their images, and c) by intentionally selecting images or messages that portray roles their audience would affirm them for. The findings of this study highlights and provides insight in millennials’ preoccupation, distraction and portrayal online, which feeds into their need to be seen in a positive light and be affirmed. These findings provide social workers with new insight and perspective into millennials unspoken rich indepth narratives when millennials portray themselves online
- Full Text:
- Authors: Coleman, Robyn-Ann
- Date: 2019
- Subjects: Generation Y
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/17542 , vital:41089
- Description: Millennials, (born between 1982 to 1996) referred to as ‘techno savvy’, are the largest and most highly educated generational cohort in this time. Introduced to technology early on in their lives has lead to a prolific use of social media. As possible future leaders, millennials also have the highest employment turnaround. The increased turnaround is because millennials are always on the lookout for better opportunities and purpose to meet their need for accelerated growth together with their need to belong. Social media platforms have the propensity to provide instantaneous and gratifying rewards, through various ways including self disclosure online. As millennials are seeking purpose and reward, communicating on a social media platform is way more rewarding than attempting to communicate. With the arena of face to face communication shifting to online communication this is becoming more amplified. This research study explored how millennials prepared to portray their content on Facebook and Instagram. A biographical narrative approach effectively acquired 15 individual millennials in-depth co-constructed narratives on how they prepare their online social media, and analysed through contexualising the co-constructed into a re-storied narrative with Connelly & Clandinin’s (2009) narrative analysis approach. Goffman’s dramaturgical approach, a conceptual framework based on micro social interaction was used to obtain insight into millennials online portrayal. The findings revealed that all of the participants utilised one or more of the following dramaturgical metaphors to portray themselves; a) they utilised props and /or filters to set the environment and filter their image online, b) they managed their impressions by being intentional in the selection of their images, and c) by intentionally selecting images or messages that portray roles their audience would affirm them for. The findings of this study highlights and provides insight in millennials’ preoccupation, distraction and portrayal online, which feeds into their need to be seen in a positive light and be affirmed. These findings provide social workers with new insight and perspective into millennials unspoken rich indepth narratives when millennials portray themselves online
- Full Text:
Exploring the interplay of sociolinguistic factors in the teaching of esl at secondary school level in Zimbabwe
- Authors: Jhamba , Duren
- Date: 2019
- Subjects: Sociolinguistics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15770 , vital:40522
- Description: The researcher noted that earlier second language teaching models tended to treat language as an artefact to be scrutinised and adhered to with grammatical precision. This tended to reduce all language learning to the mere acquisition of grammatical skills. However, since all language behaviour is embedded in sociocultural and contextual frameworks, all teaching should provide cross-cultural awareness of that complexity as well as of the internal variation within language. Therefore, the research explored the interplay of sociolinguistic factors in the teaching of English in Zimbabwe. The Mixed Methods design; a combination of the descriptive survey and the case study was adopted. The questionnaire, interview, observation and document analysis methods were used to collect both qualitative and quantitative data to assess the role of sociolinguistic factors in second language teaching pedagogy. A combination of convenient sampling and stratified random sampling was used to come up with a sample representative of the school categories and the gender of teachers in the 38 secondary schools in Gweru District. The data for the research was collected from a random sample of 50 teachers. The data analysis supported the need for a reconceptualisation of ESL teaching in Zimbabwe. Notably, language teaching tended to be exam-centric, unimaginative and not well linked to the needs of the learners in the communicative environment outside the school. This confirmed the initial observation that the secondary school graduates generally lacked sociolinguistic competence skills. The teachers were, however generally not motivated to include culture and sociolinguistics in their teaching. The research therefore recommended a revisit of the 7 | Page allowance for the interplay of sociolinguistic factors at all the planning stages of the ESL curriculum; the status, corpus and acquisition stages.
- Full Text:
- Authors: Jhamba , Duren
- Date: 2019
- Subjects: Sociolinguistics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15770 , vital:40522
- Description: The researcher noted that earlier second language teaching models tended to treat language as an artefact to be scrutinised and adhered to with grammatical precision. This tended to reduce all language learning to the mere acquisition of grammatical skills. However, since all language behaviour is embedded in sociocultural and contextual frameworks, all teaching should provide cross-cultural awareness of that complexity as well as of the internal variation within language. Therefore, the research explored the interplay of sociolinguistic factors in the teaching of English in Zimbabwe. The Mixed Methods design; a combination of the descriptive survey and the case study was adopted. The questionnaire, interview, observation and document analysis methods were used to collect both qualitative and quantitative data to assess the role of sociolinguistic factors in second language teaching pedagogy. A combination of convenient sampling and stratified random sampling was used to come up with a sample representative of the school categories and the gender of teachers in the 38 secondary schools in Gweru District. The data for the research was collected from a random sample of 50 teachers. The data analysis supported the need for a reconceptualisation of ESL teaching in Zimbabwe. Notably, language teaching tended to be exam-centric, unimaginative and not well linked to the needs of the learners in the communicative environment outside the school. This confirmed the initial observation that the secondary school graduates generally lacked sociolinguistic competence skills. The teachers were, however generally not motivated to include culture and sociolinguistics in their teaching. The research therefore recommended a revisit of the 7 | Page allowance for the interplay of sociolinguistic factors at all the planning stages of the ESL curriculum; the status, corpus and acquisition stages.
- Full Text:
Exploring the underpinning factors that contribute to the involvement of children in criminal behaviour: A case of King William’s Town”
- Authors: Mbomvana, Anelisa
- Date: 2019
- Subjects: juvenile delinquency Parent and child
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/16220 , vital:40700
- Description: Crime, in its daily occurrence, makes everyone a victim; whether of primary, secondary or of tertiary victimization, which has connotations of either direct or indirect victimization. It affects everyone and every sector. The involvement and the perpetration of crime by children, owing to a number of social dynamics, has serious implications and repercussions on children and how they later on conduct themselves. The aim of the study was to explore the factors that underpin criminal behaviour in children. The qualitative research method was adopted in the study and it informed the data collection and analysis processes of the study. Interviews and a focus group discussions were, therefore used to gain insight into the experiences of the participants. Through the use of purposive sampling, thirty five (35) participants comprising key and focus participants who were children in conflict with the law, their parents, the community members, social workers, probation officers and youth care workers from a certain Child and Youth Care Rehabilitation centre in King William’s Town were selected. The findings revealed that it was a variety of multi-factorial components that influenced criminal behaviour in children, and amongst those were individual, family, community and school factors. However, it was found that the impact of these detrimental factors identified was not comparable to the impact of the parent in the life of a child. The propensity and the extent to which these factors can affect a child was found as less probable where strong relationships were maintained between the parents and their children. This further implies that nurture was found to be very pivotal, as the role of the parents and of family support were found to be the most significant in children. Single parenting, father absence, undisclosed paternal identities, parental ignorance, poor parenting, and divorce were issues that emerged and were indicated in the study to be potentially harmful in the lives of children. A strong correlation was found between ignorant parenting and ill behavior in children as it was also found that parental conduct was very important as it defined the family’s wellbeing. A corresponding relationship was also established between dropping out of school and crime due to the fact that an overwhelming number of child offenders who participated in the study had dropped out of school. It was v further concluded that in spite of the social work profession’s adoption of the developmental approach, the propensity and timing the interventions took place was compared to those of the residual approach wherein the welfare system intervened as a measure of last resort. The study recommends that emphasis needs to be stressed on family based programmes in order to protect and secure the spontaneous growth of children
- Full Text:
- Authors: Mbomvana, Anelisa
- Date: 2019
- Subjects: juvenile delinquency Parent and child
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/16220 , vital:40700
- Description: Crime, in its daily occurrence, makes everyone a victim; whether of primary, secondary or of tertiary victimization, which has connotations of either direct or indirect victimization. It affects everyone and every sector. The involvement and the perpetration of crime by children, owing to a number of social dynamics, has serious implications and repercussions on children and how they later on conduct themselves. The aim of the study was to explore the factors that underpin criminal behaviour in children. The qualitative research method was adopted in the study and it informed the data collection and analysis processes of the study. Interviews and a focus group discussions were, therefore used to gain insight into the experiences of the participants. Through the use of purposive sampling, thirty five (35) participants comprising key and focus participants who were children in conflict with the law, their parents, the community members, social workers, probation officers and youth care workers from a certain Child and Youth Care Rehabilitation centre in King William’s Town were selected. The findings revealed that it was a variety of multi-factorial components that influenced criminal behaviour in children, and amongst those were individual, family, community and school factors. However, it was found that the impact of these detrimental factors identified was not comparable to the impact of the parent in the life of a child. The propensity and the extent to which these factors can affect a child was found as less probable where strong relationships were maintained between the parents and their children. This further implies that nurture was found to be very pivotal, as the role of the parents and of family support were found to be the most significant in children. Single parenting, father absence, undisclosed paternal identities, parental ignorance, poor parenting, and divorce were issues that emerged and were indicated in the study to be potentially harmful in the lives of children. A strong correlation was found between ignorant parenting and ill behavior in children as it was also found that parental conduct was very important as it defined the family’s wellbeing. A corresponding relationship was also established between dropping out of school and crime due to the fact that an overwhelming number of child offenders who participated in the study had dropped out of school. It was v further concluded that in spite of the social work profession’s adoption of the developmental approach, the propensity and timing the interventions took place was compared to those of the residual approach wherein the welfare system intervened as a measure of last resort. The study recommends that emphasis needs to be stressed on family based programmes in order to protect and secure the spontaneous growth of children
- Full Text:
Extraction, isolation and characterization of oleanolic acid and its analogues from Syzygium aromaticum (cloves) and evaluation of their biological activities
- Authors: khwaza, Vuyolwethu
- Date: 2019
- Subjects: Antibacterial agents
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/19076 , vital:39882
- Description: Pathogenic microorganisms have serious impact on people's lives. Every year, millions of people around the world die of bacterial infections. Resistance to common antibacterial drugs has proven to be a challenging problem in control of bacterial infections. In an attempt to develop an effective and affordable treatment for bacterial infections, oleanolic acid isolated from syzygium aromaticum conjugates incorporating other pharmaceutical scaffolds such as chloroquine derivatives, curcumin, and ergocalciferol etc have been developed. Based on the previous successes of testing combination of antimicrobial drugs and pharmaceutical drugs which appeared to be the promising strategy to overcome treatment failure; a series of hybrid compounds containing oleanolic acid and other pharmaceutical scaffolds were synthesized. 4- Aminoquinoline derivatives were first hybridized with selected organic compounds to form a class of hybrid compounds containing either amide bond or ester bond as a linker between the precursor molecules. Analogues/hybrid compounds can overcome the disadvantages of combination therapy such as drug-drug interaction. The structural effects of this type of conjugation of oleanolic acid and other pharmaceutical scaffolds were characterised by FTIR, Mass Spec and NMR spectroscopy. These compounds were studied along with the monosubstituted oleanolic acid analogues and the organic components in order to compare the effects of the substitution on their biological response.‖ All the synthesized analogues were tested against 11 bacterial strains on both Gram-positive and Gram-negative bacteria. The synthesized compounds showed selectivity and higher activity against Enterococcus faecalis (EF), Klebsiella oxytoca (KO), Escherischia coli (EC), Staphylococcus aureous (SA), Proteus vulgaris (PV) and Bacillus subtilis (BS) with MIC values; ranging between of 1.25 mg/mL to 0.072 mg/mL
- Full Text:
- Authors: khwaza, Vuyolwethu
- Date: 2019
- Subjects: Antibacterial agents
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/19076 , vital:39882
- Description: Pathogenic microorganisms have serious impact on people's lives. Every year, millions of people around the world die of bacterial infections. Resistance to common antibacterial drugs has proven to be a challenging problem in control of bacterial infections. In an attempt to develop an effective and affordable treatment for bacterial infections, oleanolic acid isolated from syzygium aromaticum conjugates incorporating other pharmaceutical scaffolds such as chloroquine derivatives, curcumin, and ergocalciferol etc have been developed. Based on the previous successes of testing combination of antimicrobial drugs and pharmaceutical drugs which appeared to be the promising strategy to overcome treatment failure; a series of hybrid compounds containing oleanolic acid and other pharmaceutical scaffolds were synthesized. 4- Aminoquinoline derivatives were first hybridized with selected organic compounds to form a class of hybrid compounds containing either amide bond or ester bond as a linker between the precursor molecules. Analogues/hybrid compounds can overcome the disadvantages of combination therapy such as drug-drug interaction. The structural effects of this type of conjugation of oleanolic acid and other pharmaceutical scaffolds were characterised by FTIR, Mass Spec and NMR spectroscopy. These compounds were studied along with the monosubstituted oleanolic acid analogues and the organic components in order to compare the effects of the substitution on their biological response.‖ All the synthesized analogues were tested against 11 bacterial strains on both Gram-positive and Gram-negative bacteria. The synthesized compounds showed selectivity and higher activity against Enterococcus faecalis (EF), Klebsiella oxytoca (KO), Escherischia coli (EC), Staphylococcus aureous (SA), Proteus vulgaris (PV) and Bacillus subtilis (BS) with MIC values; ranging between of 1.25 mg/mL to 0.072 mg/mL
- Full Text:
Factors affecting female condom use in Buffalo City Metropolitan, Eastern Cape, South Africa
- Authors: Bunu, Nosipho
- Date: 2019
- Subjects: Condom use -- South Africa Sexually transmitted diseases
- Language: English
- Type: Thesis , Masters , M Cur
- Identifier: http://hdl.handle.net/10353/12959 , vital:39411
- Description: Introduction: The female condom was introduced so many years after the male condom was introduced as an additional intervention to prevent sexually transmitted diseases and HIV/AIDS. The purpose of the study was to explore and describe the factors affecting female condom use in Buffalo City Metropolitan, Eastern Cape. Method: Quantitative descriptive and contextual research designs were used to enable the researcher to gain knowledge and insights on female condom use. The population of the study was sexually active women between ages of 15-49 years, living in Reeston community of Buffalo City Municipality in the Eastern Cape Province. Convenient sampling was used to recruit the respondents with 599-sample size and data was collected using questionnaires. Ethical considerations were considered throughout the study. Data was analysed using Statistical Package for the Social Sciences (SPSS version 22) and summarised using tables, graphs and descriptive statistics. Results: The findings of the study were minimal use of female condom because of poor marketing strategies towards female condoms despite the government intervention. The attitude of sexually active women towards female condom was positive, but minimal knowledge, inaccessibility and unavailability of female condoms hinder its use. Conclusion and Recommendation: The study recommended health education through campaigns and counselling about female condom use and their benefits to all age groups of women who are sexually active. The government and stakeholders should promote the condom uptake, accessibility and availability in every public place. Department of Health, Education should have empowered the community at large on how to promote female condom use and improve the distribution of both male/ female condoms to schools and public place.
- Full Text:
- Authors: Bunu, Nosipho
- Date: 2019
- Subjects: Condom use -- South Africa Sexually transmitted diseases
- Language: English
- Type: Thesis , Masters , M Cur
- Identifier: http://hdl.handle.net/10353/12959 , vital:39411
- Description: Introduction: The female condom was introduced so many years after the male condom was introduced as an additional intervention to prevent sexually transmitted diseases and HIV/AIDS. The purpose of the study was to explore and describe the factors affecting female condom use in Buffalo City Metropolitan, Eastern Cape. Method: Quantitative descriptive and contextual research designs were used to enable the researcher to gain knowledge and insights on female condom use. The population of the study was sexually active women between ages of 15-49 years, living in Reeston community of Buffalo City Municipality in the Eastern Cape Province. Convenient sampling was used to recruit the respondents with 599-sample size and data was collected using questionnaires. Ethical considerations were considered throughout the study. Data was analysed using Statistical Package for the Social Sciences (SPSS version 22) and summarised using tables, graphs and descriptive statistics. Results: The findings of the study were minimal use of female condom because of poor marketing strategies towards female condoms despite the government intervention. The attitude of sexually active women towards female condom was positive, but minimal knowledge, inaccessibility and unavailability of female condoms hinder its use. Conclusion and Recommendation: The study recommended health education through campaigns and counselling about female condom use and their benefits to all age groups of women who are sexually active. The government and stakeholders should promote the condom uptake, accessibility and availability in every public place. Department of Health, Education should have empowered the community at large on how to promote female condom use and improve the distribution of both male/ female condoms to schools and public place.
- Full Text:
Factors affecting grade 6 learners’ performance in Mathematics in the East London Education District
- Authors: Kwateng, Jesse
- Date: 2019
- Subjects: Mathematics -- Study and teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/15935 , vital:40565
- Description: Mathematics is one of the most important subjects rooted in many fields of study but has also been one of the greatest challenges for learners in every country, most especially in the Republic of South Africa. There have been attempts to curb the challenges that have bedeviled the success of mathematics education by governments, the Department of Education and many other stakeholders who have not enjoyed positive results in mathematics in the district of East London. Therefore, this study examines factors affecting grade 6 learners’ performance in mathematics in selected schools within the East London education district. There were three hundred and forty-five (345) grade 6 learners and 12 teachers drawn through a parallel mixed methods sampling. Stratified random sampling was used to select participants for the quantitative strand while purposive sampling was used for selecting 60 learners and 12 teachers for the qualitative strand. The researcher used the mixed method research approach. The instruments used in collecting data were structured questionnaire and semi-structured interviews to elicit information from grade 6 learners and teachers. Information gathered from the learners and teachers included: biographical information, factors affecting teaching and learning of mathematics and suggestions. The quantitative data were analyzed by using descriptive statistics of percentage from the responses of learners. The quantitative analysis was done by using excel 2010 to formulate data into percentages and qualitatively, voice recordings from the respondents semi-structured interviews were reduced through thematic analysis. The findings of the study revealed that some of the qualified mathematics educators preferred to work in another profession. Quality of teaching and learning were less effective due to overcrowded classrooms, inadequate teaching and learning resources, poor monitoring of educators, some of the learners were not adequately motivated and many others. For performance in mathematics to improve in the primary schools in East London Education District, the study made some recommendations from the findings to the stakeholders in education such as the Department of Education, principals, the government, educators and learners. These recommendations might virtually assist in finding lasting solutions to grade 6 learners with mathematics challenges.
- Full Text:
Factors affecting grade 6 learners’ performance in Mathematics in the East London Education District
- Authors: Kwateng, Jesse
- Date: 2019
- Subjects: Mathematics -- Study and teaching
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10353/15935 , vital:40565
- Description: Mathematics is one of the most important subjects rooted in many fields of study but has also been one of the greatest challenges for learners in every country, most especially in the Republic of South Africa. There have been attempts to curb the challenges that have bedeviled the success of mathematics education by governments, the Department of Education and many other stakeholders who have not enjoyed positive results in mathematics in the district of East London. Therefore, this study examines factors affecting grade 6 learners’ performance in mathematics in selected schools within the East London education district. There were three hundred and forty-five (345) grade 6 learners and 12 teachers drawn through a parallel mixed methods sampling. Stratified random sampling was used to select participants for the quantitative strand while purposive sampling was used for selecting 60 learners and 12 teachers for the qualitative strand. The researcher used the mixed method research approach. The instruments used in collecting data were structured questionnaire and semi-structured interviews to elicit information from grade 6 learners and teachers. Information gathered from the learners and teachers included: biographical information, factors affecting teaching and learning of mathematics and suggestions. The quantitative data were analyzed by using descriptive statistics of percentage from the responses of learners. The quantitative analysis was done by using excel 2010 to formulate data into percentages and qualitatively, voice recordings from the respondents semi-structured interviews were reduced through thematic analysis. The findings of the study revealed that some of the qualified mathematics educators preferred to work in another profession. Quality of teaching and learning were less effective due to overcrowded classrooms, inadequate teaching and learning resources, poor monitoring of educators, some of the learners were not adequately motivated and many others. For performance in mathematics to improve in the primary schools in East London Education District, the study made some recommendations from the findings to the stakeholders in education such as the Department of Education, principals, the government, educators and learners. These recommendations might virtually assist in finding lasting solutions to grade 6 learners with mathematics challenges.
- Full Text: