Farmers' vulnerability to climate change and variability and adaptation strategies : a case study of commercial tobacco farmers in Zimbabwe
- Authors: Nyathi, Confidence G
- Date: 2018
- Subjects: Climatic changes Global environmental change
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9111 , vital:34269
- Description: The fast track land reform program (FTRLP) of 2000 in Zimbabwe resulted in a dynamic change of Zimbabwe’s agricultural landscape. It resulted in the conversion of white owned commercial farms into resettlement models A1 and A2. Model A1 was intended to decongest communal areas and was targeted at land-constrained farmers in communal areas. Model A2 on the other hand was a commercial settlement scheme comprising small, medium and large scale commercial settlement, intended to create a cadre of black commercial farmers. This model was in principle, targeted at any Zimbabwean citizen who could prove farming experience and/or resource availability and was based on the concept of full cost recovery from the beneficiary (Musemwa, 2011) This study looked at the demographic that constitutes of commercial tobacco farmers, in Zimbabwe after the FTLRP, how they are affected by climate change and variability and how they adapt to these climate extremes; in particular, their uptake of crop insurance. The study was quantitative and utilised a structured pre-coded questionnaire to interview 158 farmers that are into commercial tobacco farming in Manicaland, Mashonaland Central, Mashonaland West and Mashonaland East Provinces of Zimbabwe. The focus was on two central themes. The first was an investigation of the commercial tobacco farmers’ vulnerability to climate change and variability in Zimbabwe. The second theme analysed the factors influencing the farmers’ adoption of crop insurance and the challenges faced by both the farmers and insurance companies in its adoption. Three approaches were used to address the above objectives. Firstly to analyze the vulnerability of commercial tobacco farmers to climate change and variability, the integrated vulnerability assessment approach using vulnerability indicators from four tobacco producing provinces in Zimbabwe was used. The vulnerability indicators used included a series of different socio-economic, institutional and biophysical attributes which were further categorized into three classes, based on the Intergovernmental Panel on Climate Change’s (IPCC 2001) definition of vulnerability, which consists of adaptive capacity, sensitivity and exposure. The LV Index and LVI-IPCC Index (Ms Excel) were then used to determine the farmer’s vulnerability index. Secondly, descriptive statistics were used to determine the manner in which farmers have been adapting to climate change and variability and lastly, the study used the binary logistic regression model to determine factors that influence the adoption of crop insurance by these farmers. The results from the analysis show that the net effect of exposure, sensitivity and adaptive capacity is moderate for the provinces of Mashonaland East, Mashonaland Central, Mashonaland West and Manicaland. Through the LVI Index and LVI-IPCC index, the study found indices of 0.566 and 0.100 respectively showing that the commercial farmers in these provinces are moderately vulnerable to the effects of climate change and variability. The factors that contributed the most to this vulnerability were aspects of finance, knowledge and skills, support services, and the state of the environment. In terms of adaptation, the majority of farmers indicated that they were aware of climate change and were aware of increased climate variability and had observed an increase in temperature and rainfall variability. The different ways in which the farmers adapted included, off-farm income, enterprise diversification, irrigation, crop rotation, conservation tillage practices, establishing woodlots and using alternative fuel for curing such as coal. The binary logistic regression model showed that the factors that were significant with a positive effect on the uptake of crop insurance are; subscription to contract farming which was the major determinant, access to crop insurance information, farm tenure and area under tobacco. Factors that had a significant but negative effect, and led to a reduction in the uptake of crop insurance were level of education, perception of crop insurance premiums and enterprise diversification. The farmers were found to be highly diversified either with off-farm income, crop diversification and or enterprise diversification. The study recommended that the farmers should promote sustainable development through their production activities and adaptation strategies adopted to increase their resilience to climate change and variability. Strengthening of social networks and institutional capacities was also recommended to; increase bargaining power, for information dissemination and provision of technical support and extension services to enable the farmers to take on appropriate measues to reduce their vulnerability. In terms of crop insurance uptake, the study recommended improvement in the dialogue between the farmers and insurance companies, and periodic training and education of farmers to improve knowledge and encourage uptake.
- Full Text:
- Date Issued: 2018
- Authors: Nyathi, Confidence G
- Date: 2018
- Subjects: Climatic changes Global environmental change
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9111 , vital:34269
- Description: The fast track land reform program (FTRLP) of 2000 in Zimbabwe resulted in a dynamic change of Zimbabwe’s agricultural landscape. It resulted in the conversion of white owned commercial farms into resettlement models A1 and A2. Model A1 was intended to decongest communal areas and was targeted at land-constrained farmers in communal areas. Model A2 on the other hand was a commercial settlement scheme comprising small, medium and large scale commercial settlement, intended to create a cadre of black commercial farmers. This model was in principle, targeted at any Zimbabwean citizen who could prove farming experience and/or resource availability and was based on the concept of full cost recovery from the beneficiary (Musemwa, 2011) This study looked at the demographic that constitutes of commercial tobacco farmers, in Zimbabwe after the FTLRP, how they are affected by climate change and variability and how they adapt to these climate extremes; in particular, their uptake of crop insurance. The study was quantitative and utilised a structured pre-coded questionnaire to interview 158 farmers that are into commercial tobacco farming in Manicaland, Mashonaland Central, Mashonaland West and Mashonaland East Provinces of Zimbabwe. The focus was on two central themes. The first was an investigation of the commercial tobacco farmers’ vulnerability to climate change and variability in Zimbabwe. The second theme analysed the factors influencing the farmers’ adoption of crop insurance and the challenges faced by both the farmers and insurance companies in its adoption. Three approaches were used to address the above objectives. Firstly to analyze the vulnerability of commercial tobacco farmers to climate change and variability, the integrated vulnerability assessment approach using vulnerability indicators from four tobacco producing provinces in Zimbabwe was used. The vulnerability indicators used included a series of different socio-economic, institutional and biophysical attributes which were further categorized into three classes, based on the Intergovernmental Panel on Climate Change’s (IPCC 2001) definition of vulnerability, which consists of adaptive capacity, sensitivity and exposure. The LV Index and LVI-IPCC Index (Ms Excel) were then used to determine the farmer’s vulnerability index. Secondly, descriptive statistics were used to determine the manner in which farmers have been adapting to climate change and variability and lastly, the study used the binary logistic regression model to determine factors that influence the adoption of crop insurance by these farmers. The results from the analysis show that the net effect of exposure, sensitivity and adaptive capacity is moderate for the provinces of Mashonaland East, Mashonaland Central, Mashonaland West and Manicaland. Through the LVI Index and LVI-IPCC index, the study found indices of 0.566 and 0.100 respectively showing that the commercial farmers in these provinces are moderately vulnerable to the effects of climate change and variability. The factors that contributed the most to this vulnerability were aspects of finance, knowledge and skills, support services, and the state of the environment. In terms of adaptation, the majority of farmers indicated that they were aware of climate change and were aware of increased climate variability and had observed an increase in temperature and rainfall variability. The different ways in which the farmers adapted included, off-farm income, enterprise diversification, irrigation, crop rotation, conservation tillage practices, establishing woodlots and using alternative fuel for curing such as coal. The binary logistic regression model showed that the factors that were significant with a positive effect on the uptake of crop insurance are; subscription to contract farming which was the major determinant, access to crop insurance information, farm tenure and area under tobacco. Factors that had a significant but negative effect, and led to a reduction in the uptake of crop insurance were level of education, perception of crop insurance premiums and enterprise diversification. The farmers were found to be highly diversified either with off-farm income, crop diversification and or enterprise diversification. The study recommended that the farmers should promote sustainable development through their production activities and adaptation strategies adopted to increase their resilience to climate change and variability. Strengthening of social networks and institutional capacities was also recommended to; increase bargaining power, for information dissemination and provision of technical support and extension services to enable the farmers to take on appropriate measues to reduce their vulnerability. In terms of crop insurance uptake, the study recommended improvement in the dialogue between the farmers and insurance companies, and periodic training and education of farmers to improve knowledge and encourage uptake.
- Full Text:
- Date Issued: 2018
Analysis of the impact of Smallholder Irrigation Schemes on the choice of rural livelihood strategy and household food security in Eastern Cape
- Authors: Christian, Mzuyanda
- Date: 2017
- Subjects: Irrigation -- South Africa -- Eastern Cape Farms, Small -- South Africa -- Eastern Cape Food security -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/4813 , vital:28526
- Description: Since the end of Apartheid, the South African government has invested substantially in smallholder irrigation schemes, particularly in the former homeland areas. One of the primary goals for establishment of these schemes was to solve food security problems. Sadly, these efforts have not produced the desired results, and poverty has deepened. The question that can be asked is: What is it that makes South African smallholder agricultural sector seemingly impervious to the interventions that government has made in targeting smallholder farmers since the dawn of democracy in 1994? In order to address such a question, a set of structured questionnaires was used to interview 100 smallholder irrigators and 100 non-irrigators using multistage stratified random sampling technique in the Amatole, Chris Hani and OR Tambo District municipalities. Demographic and socio-economic characteristics of smallholder irrigators and non-irrigators around Qamata, Pendu, Tyhefu, Merelles and Ntshongweni irrigation schemes were measured using descriptive statistics. Profitability between the two groups was measured using gross margin analysis (GM). The Probit model was used to determine the factors that affect smallholder farmer‘s choice of participation in irrigation schemes. The impact of irrigation participation on yields, crop sales and food security was estimated using the propensity score matching (PSM) technique. The impact of irrigation participation of smallholder farmer‘s choice of livelihood strategy was estimated using the multinomial regression model. The results showed that male respondents were dominant with a representation of 63 percent and average mean household size of 4 persons with the household head having spent at least 7 years at school. Farming was found to be the major (64 percent) occupation in the study area with an average income of R2 944.52 per cropping season. Both irrigating and non-irrigating smallholder farmers in the study area used improved, fertilizer and tractor for production. Overall, smallholder farmers spent 30.9 percent of their household income on food with irrigators‘food spending lower than those of non-irrigators. The gross margin analysis suggests that the irrigated farmers were in a better position to afford enough food in order to satisfy their household requirement. Findings from the Probit regression and Propensity Score Matching are consistent across the methods, indicating that irrigation participation has a positive influence on crop yields, income and consumption expenditure. Probit regression further showed that age, quality of land, access to credit, access to market, distance to the scheme and membership of another society/association have a positive impact on access and use of irrigation and are significant at p < 0.05 percent level. The Propensity Score Matching using Nearest Neighbour and Kernel Matching Methods of the outcome variables, total farm income and food consumption patterns, shows a positive and statistically significant result at p < 0.05 percent level. The nearest neighbour matching method shows that irrigators received higher farm income R2044.01 than non-irrigating farmers R622.12. The Average Treatment Effect on total food expenditure was negative both in the case of NNM and KM algorithms, indicating that participation in irrigation can decrease the expenditure levels on food from R933.30 to R926.70. This could be due to the fact that irrigating farmers produced enough for home consumption than non-irrigators. The multinomial regression model shows that irrigation participation influences smallholder farmers choice of livelihood strategy and these variables were statistically significant at p < 0.05 percent level. These results provide insights to address the question as to the appropriate development path for transition from homestead to irrigation. Continued support to smallholder farmers in the forms of funding, extension services and improved technologies is certainly needed to enhance food security.
- Full Text:
- Date Issued: 2017
- Authors: Christian, Mzuyanda
- Date: 2017
- Subjects: Irrigation -- South Africa -- Eastern Cape Farms, Small -- South Africa -- Eastern Cape Food security -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/4813 , vital:28526
- Description: Since the end of Apartheid, the South African government has invested substantially in smallholder irrigation schemes, particularly in the former homeland areas. One of the primary goals for establishment of these schemes was to solve food security problems. Sadly, these efforts have not produced the desired results, and poverty has deepened. The question that can be asked is: What is it that makes South African smallholder agricultural sector seemingly impervious to the interventions that government has made in targeting smallholder farmers since the dawn of democracy in 1994? In order to address such a question, a set of structured questionnaires was used to interview 100 smallholder irrigators and 100 non-irrigators using multistage stratified random sampling technique in the Amatole, Chris Hani and OR Tambo District municipalities. Demographic and socio-economic characteristics of smallholder irrigators and non-irrigators around Qamata, Pendu, Tyhefu, Merelles and Ntshongweni irrigation schemes were measured using descriptive statistics. Profitability between the two groups was measured using gross margin analysis (GM). The Probit model was used to determine the factors that affect smallholder farmer‘s choice of participation in irrigation schemes. The impact of irrigation participation on yields, crop sales and food security was estimated using the propensity score matching (PSM) technique. The impact of irrigation participation of smallholder farmer‘s choice of livelihood strategy was estimated using the multinomial regression model. The results showed that male respondents were dominant with a representation of 63 percent and average mean household size of 4 persons with the household head having spent at least 7 years at school. Farming was found to be the major (64 percent) occupation in the study area with an average income of R2 944.52 per cropping season. Both irrigating and non-irrigating smallholder farmers in the study area used improved, fertilizer and tractor for production. Overall, smallholder farmers spent 30.9 percent of their household income on food with irrigators‘food spending lower than those of non-irrigators. The gross margin analysis suggests that the irrigated farmers were in a better position to afford enough food in order to satisfy their household requirement. Findings from the Probit regression and Propensity Score Matching are consistent across the methods, indicating that irrigation participation has a positive influence on crop yields, income and consumption expenditure. Probit regression further showed that age, quality of land, access to credit, access to market, distance to the scheme and membership of another society/association have a positive impact on access and use of irrigation and are significant at p < 0.05 percent level. The Propensity Score Matching using Nearest Neighbour and Kernel Matching Methods of the outcome variables, total farm income and food consumption patterns, shows a positive and statistically significant result at p < 0.05 percent level. The nearest neighbour matching method shows that irrigators received higher farm income R2044.01 than non-irrigating farmers R622.12. The Average Treatment Effect on total food expenditure was negative both in the case of NNM and KM algorithms, indicating that participation in irrigation can decrease the expenditure levels on food from R933.30 to R926.70. This could be due to the fact that irrigating farmers produced enough for home consumption than non-irrigators. The multinomial regression model shows that irrigation participation influences smallholder farmers choice of livelihood strategy and these variables were statistically significant at p < 0.05 percent level. These results provide insights to address the question as to the appropriate development path for transition from homestead to irrigation. Continued support to smallholder farmers in the forms of funding, extension services and improved technologies is certainly needed to enhance food security.
- Full Text:
- Date Issued: 2017
Genetically modified (GM) maize cultivation by smallholders in the Eastern Cape Province of South Africa: Effects on target and non-target organisms and adoption challenges
- Authors: Kotey, Daniel Ashie
- Date: 2017
- Subjects: Farms, Small -- South Africa -- Eastern Cape Genetically modified foods -- South Africa -- Eastern Cape Corn -- Biotechnology -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5161 , vital:29092
- Description: The use of genetically modified (GM) maize technology is subject to compliance with stewardship requirements and the adoption of specific management practices that promote the long-term effectiveness and environmental sustainability of the technology. For smallholders to comply with these requirements and adopt the desired management practices to ultimately benefit from the technology, they require information that creates awareness of the value of these requirements. To determine what information farmers receive about GM maize and how this information is disseminated to farmers, face to face interviews were conducted with 81 extension personnel and 210 smallhoder GM maize farmers in the Eastern Cape Province of South Africa. The effect of Bt maize introduction and management practices in smallholder maize agroecosystems in the Eastern Cape on Bt maize target [Busseola fusca (Fuller) (Lepidoptera: Noctuidae)] and non-target insect pests [Agrotis segetum (Denis & Schiffermüller) (Lepidoptera: Noctuidae), Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)] and a snail species, [Cornu aspersum (Müller) (Gastropoda: Helicidae)] was determined through laboratory, field and cage experiments. The effect of smallhoder farmers‟ GM maize cultivation practices on the profitability of GM maize technology was also determined through on-farm trials in different localities of the Eastern Cape identified as hot-spots for stem borer and weed infestation. Results of surveys indicated that extension personnel had a low level of awareness of GM maize technology stewardship requirements. GM maize technology was also largely disseminated to smallholder farmers through non-participatory approaches and print media sourced from GM seed companies. Although farmers had a high level of contact with extension services, they lacked access to information about GM maize technology. Smallholder farmers‟ level of awareness about GM maize and compliance with the requirement for the planting of non-Bt maize refuge areas adjacent to Bt maize was also very low. While Bt maize event (MON810) commonly cultivated by smallholder farmers in the Eastern Cape Province had a variable effect on A. segetum under laboratory conditions, it had no effect on the incidence of plants damaged by A. segetum and C. aspersum under field conditions. The incidence of H. armigera damage on Bt maize plants was however significantly affected by Bt maize. Populations of B. fusca collected from smallholder maize fields in the province were observed to be still highly susceptible to Bt maize. Results of on-farm evaluation of the profitability of GM maize revealed that stem borer pressure, growing conditions, input supplies and market access affect the productivity and profitability of GM maize cultivation. Challenges within the extension and advisory services of the Eastern Cape which can militate against smallholder farmers‟ ability to benefit from GM maize technology and sustain the long-term efficacy of the technology were identified during this study. Given these challenges and the fact that the cultivation of GM maize may not be profitable under typical smallholder maize cultivation conditions and management practices, dissemination approaches that provide farmers the opportunity to evaluate GM maize technology alongside alternate technologies under their conditions, may prove beneficial.
- Full Text:
- Date Issued: 2017
- Authors: Kotey, Daniel Ashie
- Date: 2017
- Subjects: Farms, Small -- South Africa -- Eastern Cape Genetically modified foods -- South Africa -- Eastern Cape Corn -- Biotechnology -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5161 , vital:29092
- Description: The use of genetically modified (GM) maize technology is subject to compliance with stewardship requirements and the adoption of specific management practices that promote the long-term effectiveness and environmental sustainability of the technology. For smallholders to comply with these requirements and adopt the desired management practices to ultimately benefit from the technology, they require information that creates awareness of the value of these requirements. To determine what information farmers receive about GM maize and how this information is disseminated to farmers, face to face interviews were conducted with 81 extension personnel and 210 smallhoder GM maize farmers in the Eastern Cape Province of South Africa. The effect of Bt maize introduction and management practices in smallholder maize agroecosystems in the Eastern Cape on Bt maize target [Busseola fusca (Fuller) (Lepidoptera: Noctuidae)] and non-target insect pests [Agrotis segetum (Denis & Schiffermüller) (Lepidoptera: Noctuidae), Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)] and a snail species, [Cornu aspersum (Müller) (Gastropoda: Helicidae)] was determined through laboratory, field and cage experiments. The effect of smallhoder farmers‟ GM maize cultivation practices on the profitability of GM maize technology was also determined through on-farm trials in different localities of the Eastern Cape identified as hot-spots for stem borer and weed infestation. Results of surveys indicated that extension personnel had a low level of awareness of GM maize technology stewardship requirements. GM maize technology was also largely disseminated to smallholder farmers through non-participatory approaches and print media sourced from GM seed companies. Although farmers had a high level of contact with extension services, they lacked access to information about GM maize technology. Smallholder farmers‟ level of awareness about GM maize and compliance with the requirement for the planting of non-Bt maize refuge areas adjacent to Bt maize was also very low. While Bt maize event (MON810) commonly cultivated by smallholder farmers in the Eastern Cape Province had a variable effect on A. segetum under laboratory conditions, it had no effect on the incidence of plants damaged by A. segetum and C. aspersum under field conditions. The incidence of H. armigera damage on Bt maize plants was however significantly affected by Bt maize. Populations of B. fusca collected from smallholder maize fields in the province were observed to be still highly susceptible to Bt maize. Results of on-farm evaluation of the profitability of GM maize revealed that stem borer pressure, growing conditions, input supplies and market access affect the productivity and profitability of GM maize cultivation. Challenges within the extension and advisory services of the Eastern Cape which can militate against smallholder farmers‟ ability to benefit from GM maize technology and sustain the long-term efficacy of the technology were identified during this study. Given these challenges and the fact that the cultivation of GM maize may not be profitable under typical smallholder maize cultivation conditions and management practices, dissemination approaches that provide farmers the opportunity to evaluate GM maize technology alongside alternate technologies under their conditions, may prove beneficial.
- Full Text:
- Date Issued: 2017
The perceptions of teachers teaching mathematical literacy at Further Education and Training level : a case study conducted in the East London District
- Pillai, Sivarama Panicker Mohanan
- Authors: Pillai, Sivarama Panicker Mohanan
- Date: 2016
- Subjects: Mathematics--Study and teaching--South Africa--Eastern Cape Education, Higher--South Africa--Eastern Cape--Administration
- Language: English
- Type: Thesis , Masters , Education
- Identifier: http://hdl.handle.net/10353/15980 , vital:40571
- Description: Mathematical Literacy is a compulsory subject at the Further Education and Training (FET) level in South Africa. All learners who do not select Mathematics are required to study Mathematical Literacy as their numeracy subject in Grade 10, the first year of studying at the FET level. This requirement coincided with the educational reforms which were introduced in South Africa after democracy was attained in1994. Mathematical Literacy was introduced in Grade 10 in 2008, in Grade 11 in 2009 and in Grade 12 in 2010. Matriculants in 2012 comprised the cohort who wrote the Mathematical Literacy examination for the first time in South African history. Although 4 years have passed since the introduction of Mathematical Literacy in Grade 12, many teachers are still not sufficiently competent enough to teach the subject. This fact has been demonstrated quite conclusively in the matriculation results of the past 4 years. The failure to teach the subject satisfactorily is the result of poor knowledge of the content of the courses, insufficient teaching materials and incorrect teaching methods. This study has focused on uncovering the perceptions of teachers of the teaching of Mathematical Literacy and on how best to support and assist teachers in order to improve their knowledge of the content of their courses, to improve the methods of teaching the subject and to provide sufficient resources to support both teaching and learning. The study is also aimed to draw the attention of the Department of Education (DoE) to the need to provide better training in order to develop the competency of teachers in the subject and to overcome the lack of resources through developing innovative ways of teaching it. A qualitative approach was adopted in order to conduct the research, as it aims to provide an explicit rendering of the structure, order and broad patterns pertaining to the teaching of the subject from a group of participants. Qualitative research is best suited to studies of this sort, as it provides the means to conduct an in-depth investigation of the thoughts, beliefs, attitudes and responses of teachers concerning the teaching of Mathematical Literacy at the FET level. The research was conducted in 6 FET schools in the East London Education District. Six teachers of Mathematics and Mathematical Literacy in Grades 10, 11 and 12 were selected to comprise the research sample for the study. Semi-structured questions were used to collect the data. The research study established that educators have divergent perceptions and beliefs concerning the teaching of Mathematical Literacy at the FET level. The study was also able to identify the problems, obstacles and difficulties encountered by the teachers in their attempts to teach the subject and the trends which emerged during the conducting of the research.
- Full Text:
- Date Issued: 2016
- Authors: Pillai, Sivarama Panicker Mohanan
- Date: 2016
- Subjects: Mathematics--Study and teaching--South Africa--Eastern Cape Education, Higher--South Africa--Eastern Cape--Administration
- Language: English
- Type: Thesis , Masters , Education
- Identifier: http://hdl.handle.net/10353/15980 , vital:40571
- Description: Mathematical Literacy is a compulsory subject at the Further Education and Training (FET) level in South Africa. All learners who do not select Mathematics are required to study Mathematical Literacy as their numeracy subject in Grade 10, the first year of studying at the FET level. This requirement coincided with the educational reforms which were introduced in South Africa after democracy was attained in1994. Mathematical Literacy was introduced in Grade 10 in 2008, in Grade 11 in 2009 and in Grade 12 in 2010. Matriculants in 2012 comprised the cohort who wrote the Mathematical Literacy examination for the first time in South African history. Although 4 years have passed since the introduction of Mathematical Literacy in Grade 12, many teachers are still not sufficiently competent enough to teach the subject. This fact has been demonstrated quite conclusively in the matriculation results of the past 4 years. The failure to teach the subject satisfactorily is the result of poor knowledge of the content of the courses, insufficient teaching materials and incorrect teaching methods. This study has focused on uncovering the perceptions of teachers of the teaching of Mathematical Literacy and on how best to support and assist teachers in order to improve their knowledge of the content of their courses, to improve the methods of teaching the subject and to provide sufficient resources to support both teaching and learning. The study is also aimed to draw the attention of the Department of Education (DoE) to the need to provide better training in order to develop the competency of teachers in the subject and to overcome the lack of resources through developing innovative ways of teaching it. A qualitative approach was adopted in order to conduct the research, as it aims to provide an explicit rendering of the structure, order and broad patterns pertaining to the teaching of the subject from a group of participants. Qualitative research is best suited to studies of this sort, as it provides the means to conduct an in-depth investigation of the thoughts, beliefs, attitudes and responses of teachers concerning the teaching of Mathematical Literacy at the FET level. The research was conducted in 6 FET schools in the East London Education District. Six teachers of Mathematics and Mathematical Literacy in Grades 10, 11 and 12 were selected to comprise the research sample for the study. Semi-structured questions were used to collect the data. The research study established that educators have divergent perceptions and beliefs concerning the teaching of Mathematical Literacy at the FET level. The study was also able to identify the problems, obstacles and difficulties encountered by the teachers in their attempts to teach the subject and the trends which emerged during the conducting of the research.
- Full Text:
- Date Issued: 2016
The design of quantum dots and their conjugates as luminescent probes for analyte sensing
- Authors: Adegoke, Oluwasesan
- Date: 2014
- Subjects: Quantum dots Anolytes Luminescent probes Luminescence spectroscopy Phthalocyanines Nanoparticles
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4457 , http://hdl.handle.net/10962/d1010866
- Description: The design and applications of quantum dots (QDs) as fluorescent probes for analyte sensing is presented. Cadmium based thiol-capped QDs were employed as probe for the detection of analytes. Comparative studies between core CdTe and core-shell CdTe@ZnS QDs showed that the overall sensitivity and selectivity of the sensor was dependent on the nature of the capping agent and the QDs employed, hence making CdTe@ZnS QDs a more superior sensor than the core. To explore the luminescent sensing of QDs based on the fluorescence “turn ON” mode, L-glutathione-capped CdTe QDs was conjugated to 4-amino-2,2,6,6-tetramethylpiperidine-N-oxide (4AT) to form a QDs-4AT conjugate system. The QDs-4AT nanoprobe was highly selective and sensitive to the detection of bromide ion with a very low limit of detection. Subsequently, metallo-phthalocyanines (MPcs) were employed as host molecules on the surface of QDs based on the covalent linking of the QDs to the MPc. Elucidation of the reaction mechanism showed that the fluorescence “turn ON” effect of the QDs-MPc probe in the presence of the analyte was due to axial ligation of the analytes to the Pc ring. Studies showed that the type of substituent attached to the MPc ring influenced the overall sensitivity of the probe. Additionally, a comparative investigation using newly synthesized phthalocyanine and triaza-benzcorrole complexes was conducted when these complexes were conjugated to CdSe@ZnS QDs for analyte sensing. Results showed that the triaza-benzcorrole complex can be employed as a host-molecule sensor but displayed a lower sensitivity for analyte sensing in comparison to the phthalocyanine complex.
- Full Text:
- Date Issued: 2014
- Authors: Adegoke, Oluwasesan
- Date: 2014
- Subjects: Quantum dots Anolytes Luminescent probes Luminescence spectroscopy Phthalocyanines Nanoparticles
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4457 , http://hdl.handle.net/10962/d1010866
- Description: The design and applications of quantum dots (QDs) as fluorescent probes for analyte sensing is presented. Cadmium based thiol-capped QDs were employed as probe for the detection of analytes. Comparative studies between core CdTe and core-shell CdTe@ZnS QDs showed that the overall sensitivity and selectivity of the sensor was dependent on the nature of the capping agent and the QDs employed, hence making CdTe@ZnS QDs a more superior sensor than the core. To explore the luminescent sensing of QDs based on the fluorescence “turn ON” mode, L-glutathione-capped CdTe QDs was conjugated to 4-amino-2,2,6,6-tetramethylpiperidine-N-oxide (4AT) to form a QDs-4AT conjugate system. The QDs-4AT nanoprobe was highly selective and sensitive to the detection of bromide ion with a very low limit of detection. Subsequently, metallo-phthalocyanines (MPcs) were employed as host molecules on the surface of QDs based on the covalent linking of the QDs to the MPc. Elucidation of the reaction mechanism showed that the fluorescence “turn ON” effect of the QDs-MPc probe in the presence of the analyte was due to axial ligation of the analytes to the Pc ring. Studies showed that the type of substituent attached to the MPc ring influenced the overall sensitivity of the probe. Additionally, a comparative investigation using newly synthesized phthalocyanine and triaza-benzcorrole complexes was conducted when these complexes were conjugated to CdSe@ZnS QDs for analyte sensing. Results showed that the triaza-benzcorrole complex can be employed as a host-molecule sensor but displayed a lower sensitivity for analyte sensing in comparison to the phthalocyanine complex.
- Full Text:
- Date Issued: 2014
An illustrated information leaflet for low-literate HIV/AIDS patients on antiretroviral therapy : design, development and evaluation
- Authors: Ramela, Thato
- Date: 2009
- Subjects: Antiretroviral agents -- South Africa HIV-positive persons -- Care -- South Africa AIDS (Disease) -- Study and teaching -- South Africa HIV infections -- Treatment -- South Africa AIDS (Disease) -- Treatment -- South Africa AIDS (Disease) -- Africa, Sub-Saharan -- Statistics Communication in medicine -- South Africa Communication in public health -- South Africa
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: vital:3834 , http://hdl.handle.net/10962/d1007563
- Description: South Africa's HIV prevalence rate is estimated to be 5.7 million and at the end of2007 a total of 45845 HIV/AIDS adult patients were taking antiretroviral therapy (ART). The global incidence of HIV/AIDS has been slowly decreasing over the years but is still widespread. This disease is still more prevalent in sub-Saharan Africa than in other parts of the world, with more than 60% people living with HIV/AIDS. Highly active antiretroviral therapy (HAART), the treatment of choice, slows the progression of the human immunovirus but demands a high adherence rate in excess of 95%. Patients who are poorly informed about antiretrovirals (ARVs) and misunderstand medicine-taking instructions or experience unexpected side effects may interrupt therapy, predisposing them to the development of resistance. Such patients need information but, given the poor literacy skills prevalent in South Africa, written information is often not fully comprehended and is often written at too high a reading level. The objectives of this research project were to design, modify and evaluate HIV / AIDS patient education materials for low-literate isiXhosa speaking adults residing in Grahamstown and to examine their impact on the understanding of various aspects of the disease and its treatment. Pictograms illustrating common side effects of ARVs (e.g. stavudine, efavirenz, lamivudine), as well as various sources 'for purchasing nonprescription medicines, storage and medicine-taking instructions were designed and evaluated both qualitatively, using group discussions, and quantitatively through individual interviews where interpretation of the pictograms was assessed. These pictograms were incorporated in a patient information leaflet (PIL) which had been specifically designed for people with limited reading skills and was a simple document containing the minimum of essential text. A previously developed PIL was modified in collaboration with the target population and two versions were produced, one incorporating pictograms illustrating side effects, the other with none. Pictograms were used in both to illustrate other medicine-taking instructions. The PILs were tested objectively to assess the readability, format, content, and general design. They were translated into isiXhosa prior to being qualitatively and quantitatively evaluated in a low-literate isiXhosa speaking population. Understanding of the PILs was assessed by asking a series of questions about the PIL content. Participant opinion of the readability and appearance of the PIL was recorded. The relationship between PIL understanding and selected demographic variables was investigated. Findings from this study illustrated that well designed pictograms assist in the location of information in written leaflets and they may enhance understanding of the information. It was further demonstrated that education influences total understanding of PIL content thus emphasizing the need for tailor-written information in accordance with the education level of the target population. A desire to receive PILs incorporating pictograms was expressed by the majority of participants. Collaboration with the intended target population is essential to design culturally acceptable, easily interpreted pictograms and to produce user-friendly, easy-to-read, comprehensible patient education materials. The rigorous, iterative design, modification and testing process described in this study is one that should be adopted in producing all health-related education materials.
- Full Text:
- Date Issued: 2009
- Authors: Ramela, Thato
- Date: 2009
- Subjects: Antiretroviral agents -- South Africa HIV-positive persons -- Care -- South Africa AIDS (Disease) -- Study and teaching -- South Africa HIV infections -- Treatment -- South Africa AIDS (Disease) -- Treatment -- South Africa AIDS (Disease) -- Africa, Sub-Saharan -- Statistics Communication in medicine -- South Africa Communication in public health -- South Africa
- Language: English
- Type: Thesis , Masters , MPharm
- Identifier: vital:3834 , http://hdl.handle.net/10962/d1007563
- Description: South Africa's HIV prevalence rate is estimated to be 5.7 million and at the end of2007 a total of 45845 HIV/AIDS adult patients were taking antiretroviral therapy (ART). The global incidence of HIV/AIDS has been slowly decreasing over the years but is still widespread. This disease is still more prevalent in sub-Saharan Africa than in other parts of the world, with more than 60% people living with HIV/AIDS. Highly active antiretroviral therapy (HAART), the treatment of choice, slows the progression of the human immunovirus but demands a high adherence rate in excess of 95%. Patients who are poorly informed about antiretrovirals (ARVs) and misunderstand medicine-taking instructions or experience unexpected side effects may interrupt therapy, predisposing them to the development of resistance. Such patients need information but, given the poor literacy skills prevalent in South Africa, written information is often not fully comprehended and is often written at too high a reading level. The objectives of this research project were to design, modify and evaluate HIV / AIDS patient education materials for low-literate isiXhosa speaking adults residing in Grahamstown and to examine their impact on the understanding of various aspects of the disease and its treatment. Pictograms illustrating common side effects of ARVs (e.g. stavudine, efavirenz, lamivudine), as well as various sources 'for purchasing nonprescription medicines, storage and medicine-taking instructions were designed and evaluated both qualitatively, using group discussions, and quantitatively through individual interviews where interpretation of the pictograms was assessed. These pictograms were incorporated in a patient information leaflet (PIL) which had been specifically designed for people with limited reading skills and was a simple document containing the minimum of essential text. A previously developed PIL was modified in collaboration with the target population and two versions were produced, one incorporating pictograms illustrating side effects, the other with none. Pictograms were used in both to illustrate other medicine-taking instructions. The PILs were tested objectively to assess the readability, format, content, and general design. They were translated into isiXhosa prior to being qualitatively and quantitatively evaluated in a low-literate isiXhosa speaking population. Understanding of the PILs was assessed by asking a series of questions about the PIL content. Participant opinion of the readability and appearance of the PIL was recorded. The relationship between PIL understanding and selected demographic variables was investigated. Findings from this study illustrated that well designed pictograms assist in the location of information in written leaflets and they may enhance understanding of the information. It was further demonstrated that education influences total understanding of PIL content thus emphasizing the need for tailor-written information in accordance with the education level of the target population. A desire to receive PILs incorporating pictograms was expressed by the majority of participants. Collaboration with the intended target population is essential to design culturally acceptable, easily interpreted pictograms and to produce user-friendly, easy-to-read, comprehensible patient education materials. The rigorous, iterative design, modification and testing process described in this study is one that should be adopted in producing all health-related education materials.
- Full Text:
- Date Issued: 2009
Factors affecting the invasion of Pteronia incana (Blue bush) onto hillslopes in Ngqushwa (formerly Peddie) District, Eastern Cape
- Authors: Kakembo, Vincent
- Date: 2004
- Subjects: Shrubs -- South Africa -- Eastern Cape Slopes (Physical geography) -- South Africa -- Eastern Cape Biological invasions -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4833 , http://hdl.handle.net/10962/d1005508
- Description: The factors that influence the invasion of hillslopes by the shrub Pteronia incana in the communal rangelands of Ngqushwa (formerly Peddie) district were investigated. Mgwalana, one of the catchments in the district where encroachment by the species is widespread, was chosen. The study combined field observations with image analysis based on high resolution infrared imagery. The catchment was flown and high resolution infrared images (1mx1m) were taken using a Kodak DCS420 digital, colour-infrared camera. The images were analysed using Idrisi32 and Kilimanjaro GIS versions. The ability of different vegetation indices to separate P. incana from the other cover types was investigated. Field observations of the degree of P. incana invasion in relation to, inter alia, soil surface conditions, slope angle and visible forms of erosion were made. A Digital Elevation Model (DEM) of 20m spatial resolution was used to derive terrain parameters. The presence and absence of P. incana in relation to slope gradient and aspect were determined. The combined influence of the two terrain parameters and land use on the invasion was also investigated. The Topographic Wetness Index (WI), a component of the TOPMODEL was derived from the DEM and its relationship with the spatial distribution of P. incana was explored. Soil moisture dependencies for P. incana and grass species as well as surrogates for runoff under the shrub and adjacent bare areas were determined in the field. A high level of classification accuracy confirmed the reliability of digital camera imagery for spatial analyses. Distinct spectral separability for the surface vegetation cover types was achieved by means of the Perpendicular Vegetation Index (PVI) as opposed to the ratio based vegetation indices (NDVI, SAVI and MSAVI). The absence/presence of P. incana was noted to be strongly influenced by slope angle and aspect. The probability for P. incana occurrence increased with slope steepness and southerly slope orientation. Abandoned and grazing lands were identified as the main invasion hotspots. Blanket invasion of the former signified the high susceptibility of abandoned land to P. incana invasion. The combined influence of land use, slope gradient and aspect was also noted to have promoted the invasion. This is borne out by the concentration of the invasion on abandoned steep slopes with a southerly orientation. Local topographic variations were identified as having a strong bearing on P. incana spatial distribution. The topographically driven WI confirmed this relationship, such that P. incana was associated with the low WI values of convexities. Differences in the moisture dependencies between P. incana and grass species were demonstrated by the greater rooting depth of the former. During field surveys, soil surface crusting was noted as inherent to P. incana patchiness. The coupling between local topography and soil surface crusting underpins soil moisture variability at hillslope and patch scales respectively. This in turn determines the competition between P. incana and grass species and the eventual replacement of the latter by the former. A close spatial correlation between fully established P. incana and severe forms of soil erosion was observed. Loss of patchiness and expansion of inter-patch bare areas promote runoff connectivity erosion. As most of the runoff becomes run out, hillslopes tend towards dysfunctional systems. Greater soil moisture storage after rainstorms under P. incana tussocks than the adjacent bare areas signifies the shrub’s water harvesting capabilities. The tussocks could thus serve as a starting-pointbuilding- block for the rehabilitation of dysfunctional hillslope systems.
- Full Text:
- Date Issued: 2004
- Authors: Kakembo, Vincent
- Date: 2004
- Subjects: Shrubs -- South Africa -- Eastern Cape Slopes (Physical geography) -- South Africa -- Eastern Cape Biological invasions -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4833 , http://hdl.handle.net/10962/d1005508
- Description: The factors that influence the invasion of hillslopes by the shrub Pteronia incana in the communal rangelands of Ngqushwa (formerly Peddie) district were investigated. Mgwalana, one of the catchments in the district where encroachment by the species is widespread, was chosen. The study combined field observations with image analysis based on high resolution infrared imagery. The catchment was flown and high resolution infrared images (1mx1m) were taken using a Kodak DCS420 digital, colour-infrared camera. The images were analysed using Idrisi32 and Kilimanjaro GIS versions. The ability of different vegetation indices to separate P. incana from the other cover types was investigated. Field observations of the degree of P. incana invasion in relation to, inter alia, soil surface conditions, slope angle and visible forms of erosion were made. A Digital Elevation Model (DEM) of 20m spatial resolution was used to derive terrain parameters. The presence and absence of P. incana in relation to slope gradient and aspect were determined. The combined influence of the two terrain parameters and land use on the invasion was also investigated. The Topographic Wetness Index (WI), a component of the TOPMODEL was derived from the DEM and its relationship with the spatial distribution of P. incana was explored. Soil moisture dependencies for P. incana and grass species as well as surrogates for runoff under the shrub and adjacent bare areas were determined in the field. A high level of classification accuracy confirmed the reliability of digital camera imagery for spatial analyses. Distinct spectral separability for the surface vegetation cover types was achieved by means of the Perpendicular Vegetation Index (PVI) as opposed to the ratio based vegetation indices (NDVI, SAVI and MSAVI). The absence/presence of P. incana was noted to be strongly influenced by slope angle and aspect. The probability for P. incana occurrence increased with slope steepness and southerly slope orientation. Abandoned and grazing lands were identified as the main invasion hotspots. Blanket invasion of the former signified the high susceptibility of abandoned land to P. incana invasion. The combined influence of land use, slope gradient and aspect was also noted to have promoted the invasion. This is borne out by the concentration of the invasion on abandoned steep slopes with a southerly orientation. Local topographic variations were identified as having a strong bearing on P. incana spatial distribution. The topographically driven WI confirmed this relationship, such that P. incana was associated with the low WI values of convexities. Differences in the moisture dependencies between P. incana and grass species were demonstrated by the greater rooting depth of the former. During field surveys, soil surface crusting was noted as inherent to P. incana patchiness. The coupling between local topography and soil surface crusting underpins soil moisture variability at hillslope and patch scales respectively. This in turn determines the competition between P. incana and grass species and the eventual replacement of the latter by the former. A close spatial correlation between fully established P. incana and severe forms of soil erosion was observed. Loss of patchiness and expansion of inter-patch bare areas promote runoff connectivity erosion. As most of the runoff becomes run out, hillslopes tend towards dysfunctional systems. Greater soil moisture storage after rainstorms under P. incana tussocks than the adjacent bare areas signifies the shrub’s water harvesting capabilities. The tussocks could thus serve as a starting-pointbuilding- block for the rehabilitation of dysfunctional hillslope systems.
- Full Text:
- Date Issued: 2004
An investigation into the nature and extent of erosion and sedimentation in the Maqalika Dam catchment, Maseru
- Authors: Ntsaba, 'Mankone 'Mabataung
- Date: 1990
- Subjects: Erosion -- Lesotho Sedimentation and deposition -- Lesotho Land use -- Lesotho -- History River sediments -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4799 , http://hdl.handle.net/10962/d1001899
- Description: The study investigates the nature and extent of erosion and deposition in the Maqalika catchment, Maseru. Components of the study include (i) the re-construction of erosion and land use history in the catchment from 1961 to 1985, (li) determination of dominant factors or combinations of factors responsible for the observed erosion distribution at each date, (iii) the identification and evaluation of erosion and deposition features, and their spatial and temporal variations, and (iv) identification of socia-economic problems associated with observed erosion and deposition. Methods employed for the re-construction of erosion and land use history include the use of sequential aerial photography of 1961, 1979 and 1985, orthophoto maps and review of literature from past studies. It has been possible to map erosion and land use for the three time periods pinpointing areas of major change. Results are presented in map form showing the spatial distribution of each erosion class and each land use category. It was however not possible to derive any meaningful relationship between erosion distribution and land use, on the aforementioned maps. The only observation made from the comparison of the maps is that erosion degree and distribution sometimes changes with land use, while land use sometimes changes in response to erosion. Major land use changes are the conversion of agricultural land to urban land use, and grazing land. Due to the mnlti-dimensional nature of soil erosion, hand 'actor analysis was employed to determine which factors or combinations of factors were dominant at each date. Despite the extensive research on the various factors affecting erosion such as those used for the USLE and SLEMSA there is a growing uncertainty as to which factors are more important to erosion. Soil erodibility has been found to be a component of the major controlling factor combinations in all three periods under study. At each date erodibility combined with a number of other factors determined the observed erosion distribution. As suggested by Mosley (1980), Cambell (1985) and Coleman and Scatena (1986) sediment from a catchment is derived principally from spatially limited portions of the catchment. Likewise eroded sediment becomes deposited in spatially limited areas with special characteristics which encourage deposition. Aerial photographic survey aided by ground survey and oblique photographs were employed to identify sediment sources and sinks within the catchment. Some sediment sources are fIxed such as gully floors and sides, while some change location from time to time such as construction sites. An evaluation of portions of the catchment for their ability to supply and deliver sediment has shown that the most eroded areas are not the most active sediment sources. Sediment yield is limited by either supply or transport. Sediment yield was estimated using reservoir survey data which indicate that there is a high rate of soil loss from the catchment. One flaw of this method as a measure of soil loss is that it treats the measured sediment yield as if it were contributed uniformly from the basin. This method however affords the researcher to estimate minimum erosion rates, taking into account that large amounts of sediment are stored at various places within the catchment. The possible socio-economic consequences of erosion and deposition have been identified. These include loss of cropland, destruction of roads and building sites which require methods of reclamation, sedimentation of small reservoirs and ponds, and the formation of gully bottom fills which are potential sediment sources. Conservation measures presently applied in the catchment are assessed and found to be irrelavant to the present erosion problem. Data from the reservoir survey revealed that the estimated rate of soil loss is more important to on-site erosion damage than to off-site damage in the form of the sedimentation of Maqalika reservoir. Appropriate conservation measures such as those suggested by Amimoto (1981) would be relevant to the study area, however the main constraint in their implementation would be lack of legislation and the absence of a sound land use policy. It is therefore concluded that the present land use situation which does not take into consideration the physical constraints of the catchment is partly responsible for accelarated erosion in the catchment.
- Full Text:
- Date Issued: 1990
- Authors: Ntsaba, 'Mankone 'Mabataung
- Date: 1990
- Subjects: Erosion -- Lesotho Sedimentation and deposition -- Lesotho Land use -- Lesotho -- History River sediments -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4799 , http://hdl.handle.net/10962/d1001899
- Description: The study investigates the nature and extent of erosion and deposition in the Maqalika catchment, Maseru. Components of the study include (i) the re-construction of erosion and land use history in the catchment from 1961 to 1985, (li) determination of dominant factors or combinations of factors responsible for the observed erosion distribution at each date, (iii) the identification and evaluation of erosion and deposition features, and their spatial and temporal variations, and (iv) identification of socia-economic problems associated with observed erosion and deposition. Methods employed for the re-construction of erosion and land use history include the use of sequential aerial photography of 1961, 1979 and 1985, orthophoto maps and review of literature from past studies. It has been possible to map erosion and land use for the three time periods pinpointing areas of major change. Results are presented in map form showing the spatial distribution of each erosion class and each land use category. It was however not possible to derive any meaningful relationship between erosion distribution and land use, on the aforementioned maps. The only observation made from the comparison of the maps is that erosion degree and distribution sometimes changes with land use, while land use sometimes changes in response to erosion. Major land use changes are the conversion of agricultural land to urban land use, and grazing land. Due to the mnlti-dimensional nature of soil erosion, hand 'actor analysis was employed to determine which factors or combinations of factors were dominant at each date. Despite the extensive research on the various factors affecting erosion such as those used for the USLE and SLEMSA there is a growing uncertainty as to which factors are more important to erosion. Soil erodibility has been found to be a component of the major controlling factor combinations in all three periods under study. At each date erodibility combined with a number of other factors determined the observed erosion distribution. As suggested by Mosley (1980), Cambell (1985) and Coleman and Scatena (1986) sediment from a catchment is derived principally from spatially limited portions of the catchment. Likewise eroded sediment becomes deposited in spatially limited areas with special characteristics which encourage deposition. Aerial photographic survey aided by ground survey and oblique photographs were employed to identify sediment sources and sinks within the catchment. Some sediment sources are fIxed such as gully floors and sides, while some change location from time to time such as construction sites. An evaluation of portions of the catchment for their ability to supply and deliver sediment has shown that the most eroded areas are not the most active sediment sources. Sediment yield is limited by either supply or transport. Sediment yield was estimated using reservoir survey data which indicate that there is a high rate of soil loss from the catchment. One flaw of this method as a measure of soil loss is that it treats the measured sediment yield as if it were contributed uniformly from the basin. This method however affords the researcher to estimate minimum erosion rates, taking into account that large amounts of sediment are stored at various places within the catchment. The possible socio-economic consequences of erosion and deposition have been identified. These include loss of cropland, destruction of roads and building sites which require methods of reclamation, sedimentation of small reservoirs and ponds, and the formation of gully bottom fills which are potential sediment sources. Conservation measures presently applied in the catchment are assessed and found to be irrelavant to the present erosion problem. Data from the reservoir survey revealed that the estimated rate of soil loss is more important to on-site erosion damage than to off-site damage in the form of the sedimentation of Maqalika reservoir. Appropriate conservation measures such as those suggested by Amimoto (1981) would be relevant to the study area, however the main constraint in their implementation would be lack of legislation and the absence of a sound land use policy. It is therefore concluded that the present land use situation which does not take into consideration the physical constraints of the catchment is partly responsible for accelarated erosion in the catchment.
- Full Text:
- Date Issued: 1990
A commentary on Nepos' Life of Alcibiades
- Authors: Jackson, John Leonard
- Date: 1982
- Subjects: Classical biography -- Criticism and interpretation , Nepos, Cornelius -- Life Of Alcibiades -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3621 , http://hdl.handle.net/10962/d1007223
- Description: From Introduction: Much of the commentary is historical and biographical in its emphasis. In making detailed reference to other accounts , I have tried to fill important gaps in Nepos' brief and (in places) abrupt account, to compare the picture of Alcibiades in his account with that of other accounts and to trace sources which he may have used important passages have been quoted in full so that verbal similarities can be seen. A striking feature of Nepos' work is his tendency to describe many non-Roman situations in Roman terms. This reflects not only his vagueness about details (a common fault in his writing), but also perhaps a desire to make his Lives more relevant to his reading public and thus more readable. From antiquity to the present day biography and history have tended to be distinguished from each other, and biography has had the greater popular appeal. Readability is perhaps the most abiding quality of Nepos' Lives and Alcibiades may be the most readable of them all. On the whole Nepos portrays him consistently, although of course he also emphasises the inconsistency which was such an important part of his nature. He has told the story simply, yet dramatically; many of the complicated details about Alcibiades are omitted, yet particular incidents are highlighted, notably the return to Athens and the assassination. Above all, from Nepos' Life there emerges the impression that Alcibiades was unique and worth writing about.
- Full Text:
- Date Issued: 1982
- Authors: Jackson, John Leonard
- Date: 1982
- Subjects: Classical biography -- Criticism and interpretation , Nepos, Cornelius -- Life Of Alcibiades -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3621 , http://hdl.handle.net/10962/d1007223
- Description: From Introduction: Much of the commentary is historical and biographical in its emphasis. In making detailed reference to other accounts , I have tried to fill important gaps in Nepos' brief and (in places) abrupt account, to compare the picture of Alcibiades in his account with that of other accounts and to trace sources which he may have used important passages have been quoted in full so that verbal similarities can be seen. A striking feature of Nepos' work is his tendency to describe many non-Roman situations in Roman terms. This reflects not only his vagueness about details (a common fault in his writing), but also perhaps a desire to make his Lives more relevant to his reading public and thus more readable. From antiquity to the present day biography and history have tended to be distinguished from each other, and biography has had the greater popular appeal. Readability is perhaps the most abiding quality of Nepos' Lives and Alcibiades may be the most readable of them all. On the whole Nepos portrays him consistently, although of course he also emphasises the inconsistency which was such an important part of his nature. He has told the story simply, yet dramatically; many of the complicated details about Alcibiades are omitted, yet particular incidents are highlighted, notably the return to Athens and the assassination. Above all, from Nepos' Life there emerges the impression that Alcibiades was unique and worth writing about.
- Full Text:
- Date Issued: 1982
Le theme de l'absence dans le theatre d'Arthur Adamov
- Authors: Jones, Rosalind
- Date: 1978
- Subjects: Adamov, Arthur -- Criticism and interpretation , French drama -- History and criticism , Absurd (Philosophy) in literature
- Language: French
- Type: Thesis , Masters , MA
- Identifier: vital:3637 , http://hdl.handle.net/10962/d1013401
- Description: [From Introduction]. L'oeuvre dramatique d'Arthur Adamov (1908-1970) s'lténd sur une trentaine d'années et révèle une grande variété d'influences et d'intérêts. Depuis son point de départ "absurde" des années quarante en passant par une période oú s'imposent des préoccupations d'ordre social et politique pour aboutir á une fusion des sujets métaphysiques et des sujets engagés dans un théâtre qui est de nouveau non-réaliste et onirique, nous pouvons tracer des influences aussi diverses que celle provenant de Flaubert et des premiers surréalistes, de Strindberg et de Kafka, de Dostoîevsky et des expressionnistes russes et allemands, de Buchner, d'Antonin Artaud, de Brecht et de Karl Marx.
- Full Text:
- Date Issued: 1978
- Authors: Jones, Rosalind
- Date: 1978
- Subjects: Adamov, Arthur -- Criticism and interpretation , French drama -- History and criticism , Absurd (Philosophy) in literature
- Language: French
- Type: Thesis , Masters , MA
- Identifier: vital:3637 , http://hdl.handle.net/10962/d1013401
- Description: [From Introduction]. L'oeuvre dramatique d'Arthur Adamov (1908-1970) s'lténd sur une trentaine d'années et révèle une grande variété d'influences et d'intérêts. Depuis son point de départ "absurde" des années quarante en passant par une période oú s'imposent des préoccupations d'ordre social et politique pour aboutir á une fusion des sujets métaphysiques et des sujets engagés dans un théâtre qui est de nouveau non-réaliste et onirique, nous pouvons tracer des influences aussi diverses que celle provenant de Flaubert et des premiers surréalistes, de Strindberg et de Kafka, de Dostoîevsky et des expressionnistes russes et allemands, de Buchner, d'Antonin Artaud, de Brecht et de Karl Marx.
- Full Text:
- Date Issued: 1978
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