Adapting to climate change to achieve household food security: a case study of small-scale farmers at Dzindi smallholder irrigation scheme in the Limpopo Province of South Africa
- Chigavazira, Blessing Munyaradzi
- Authors: Chigavazira, Blessing Munyaradzi
- Date: 2012
- Subjects: Climatic changes -- South Africa -- Limpopo , Food security -- South Africa -- Limpopo , Farms, Small -- South Africa -- Limpopo , Sustainable agriculture -- South Africa -- Limpopo , Irrigation farming -- South Africa -- Eastern Cape , Irrigation projects -- South Africa -- Limpopo
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11434 , http://hdl.handle.net/10353/d1007186 , Climatic changes -- South Africa -- Limpopo , Food security -- South Africa -- Limpopo , Farms, Small -- South Africa -- Limpopo , Sustainable agriculture -- South Africa -- Limpopo , Irrigation farming -- South Africa -- Eastern Cape , Irrigation projects -- South Africa -- Limpopo
- Description: This dissertation explored adaptation mechanisms and adaptation options employed by rural small-scale farmers at Dzindi Irrigation Scheme to achieve food security in the midst of climate change as well as reflecting on the role of the state in building capacity of rural small-scale farmers to adapt to climate change. The study employed qualitative research techniques and data was obtained through semi-structured interviews with 40 small-scale farmers at Dzindi smallholder irrigation scheme.Irrigation control, high yielding crop varieties (HYVs), drought resistant crop varieties, drip irrigation are among a host of adaptation strategies successfully employed by farmers at Dzindi. These strategies have been effective in giving the farmers a lifeline in terms of household food supply and income.However, lack of funding, modern infrastructure and equipment has hampered adaptation efforts at the scheme. This has been compounded by lack of support from the Government. Government seemingly has not done enough to capacitate and assist famers to adapt to climate change.
- Full Text:
- Date Issued: 2012
- Authors: Chigavazira, Blessing Munyaradzi
- Date: 2012
- Subjects: Climatic changes -- South Africa -- Limpopo , Food security -- South Africa -- Limpopo , Farms, Small -- South Africa -- Limpopo , Sustainable agriculture -- South Africa -- Limpopo , Irrigation farming -- South Africa -- Eastern Cape , Irrigation projects -- South Africa -- Limpopo
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11434 , http://hdl.handle.net/10353/d1007186 , Climatic changes -- South Africa -- Limpopo , Food security -- South Africa -- Limpopo , Farms, Small -- South Africa -- Limpopo , Sustainable agriculture -- South Africa -- Limpopo , Irrigation farming -- South Africa -- Eastern Cape , Irrigation projects -- South Africa -- Limpopo
- Description: This dissertation explored adaptation mechanisms and adaptation options employed by rural small-scale farmers at Dzindi Irrigation Scheme to achieve food security in the midst of climate change as well as reflecting on the role of the state in building capacity of rural small-scale farmers to adapt to climate change. The study employed qualitative research techniques and data was obtained through semi-structured interviews with 40 small-scale farmers at Dzindi smallholder irrigation scheme.Irrigation control, high yielding crop varieties (HYVs), drought resistant crop varieties, drip irrigation are among a host of adaptation strategies successfully employed by farmers at Dzindi. These strategies have been effective in giving the farmers a lifeline in terms of household food supply and income.However, lack of funding, modern infrastructure and equipment has hampered adaptation efforts at the scheme. This has been compounded by lack of support from the Government. Government seemingly has not done enough to capacitate and assist famers to adapt to climate change.
- Full Text:
- Date Issued: 2012
Stakeholder management for urban development projects in South Africa
- Authors: Mgemane, Lesley Musa
- Date: 2012
- Subjects: Economic development projects -- South Africa , Project management , City planning -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Doctoral , DBA
- Identifier: vital:9014 , http://hdl.handle.net/10948/d1018588
- Description: The study arose from a research issue that is both practical and theoretical. The apparent challenges of a stakeholder management nature in the execution of urban development projects in South Africa led to the conception of the study. However, the most compelling need for the study was the theoretical gap – in the urban development theory, in the projects theory, and particularly in the stakeholder management theory – on the management of stakeholders in the South African urban development projects. As a result, the value of the study is both managerial and scholarly. The urban development concept is understood to be referring to the development of urban areas for the purpose of improving the quality of life in the cities, and the development of the infrastructure to enable economic growth. Urban development projects, as vehicles for accomplishing urban development, are important for a newly industrialised economy (NIE) like South Africa. Also, as a result of the political past – in the form of a systematic preferential development based on racial segregation by the previous government, and the two decades of subjection of South Africa to economic and cultural isolation by the international community – South Africa has a huge backlog with regard to the two general purposes of urban development: social progress and economic progress. Consequently, urban development projects in South Africa are very critical and important, particularly for geopolitical and socio-economic reasons. Judging by the extensive negative media coverage, many of the South African urban development projects demonstrate poor stakeholder management. The list of urban development projects that have experienced stakeholder related challenges in South Africa is endless: the Johannesburg BRT project, the Gauteng Freeway Improvement project, the Transnet multi-product pipeline-construction project, the Chapman’s Peak toll-road project, the Kusile and Medupi power stations construction projects, are some examples. The project management profession and body of knowledge view stakeholder management in a serious light, actually a failure in adequately implementing stakeholder management in a project is tantamount to a failure of the project itself. There is also a consensus among numerous researchers that there is a general lack of knowledge for project managers on how to manage stakeholders, particularly external stakeholders. Stakeholder management is a poorly understood and, usually a very badly implemented project management discipline. Managing projects in Africa, and by inference in South Africa, can be particularly complex – given the involvement of multiple stakeholders and their historical, geopolitical, economic relationships, and cultural differences. The study set out to develop a framework to improve the management of stakeholders in urban development projects – by investigating the critical success factors that have an influence on stakeholder management success in urban development projects in South Africa. This study is important primarily because there seems to be no previous research conducted on this important project management discipline, stakeholder management of urban development projects; and there seems to be a neglect of stakeholder management duties by urban development projects agencies, and by inference, projects practitioners in South Africa. A theoretical space was created for this study in the fraternal literature of previous studies on critical success factors and/or stakeholder management in construction projects – as there seem to be none undertaken in the urban development environment, particularly in the South African context.
- Full Text:
- Date Issued: 2012
- Authors: Mgemane, Lesley Musa
- Date: 2012
- Subjects: Economic development projects -- South Africa , Project management , City planning -- South Africa , South Africa -- Economic conditions
- Language: English
- Type: Thesis , Doctoral , DBA
- Identifier: vital:9014 , http://hdl.handle.net/10948/d1018588
- Description: The study arose from a research issue that is both practical and theoretical. The apparent challenges of a stakeholder management nature in the execution of urban development projects in South Africa led to the conception of the study. However, the most compelling need for the study was the theoretical gap – in the urban development theory, in the projects theory, and particularly in the stakeholder management theory – on the management of stakeholders in the South African urban development projects. As a result, the value of the study is both managerial and scholarly. The urban development concept is understood to be referring to the development of urban areas for the purpose of improving the quality of life in the cities, and the development of the infrastructure to enable economic growth. Urban development projects, as vehicles for accomplishing urban development, are important for a newly industrialised economy (NIE) like South Africa. Also, as a result of the political past – in the form of a systematic preferential development based on racial segregation by the previous government, and the two decades of subjection of South Africa to economic and cultural isolation by the international community – South Africa has a huge backlog with regard to the two general purposes of urban development: social progress and economic progress. Consequently, urban development projects in South Africa are very critical and important, particularly for geopolitical and socio-economic reasons. Judging by the extensive negative media coverage, many of the South African urban development projects demonstrate poor stakeholder management. The list of urban development projects that have experienced stakeholder related challenges in South Africa is endless: the Johannesburg BRT project, the Gauteng Freeway Improvement project, the Transnet multi-product pipeline-construction project, the Chapman’s Peak toll-road project, the Kusile and Medupi power stations construction projects, are some examples. The project management profession and body of knowledge view stakeholder management in a serious light, actually a failure in adequately implementing stakeholder management in a project is tantamount to a failure of the project itself. There is also a consensus among numerous researchers that there is a general lack of knowledge for project managers on how to manage stakeholders, particularly external stakeholders. Stakeholder management is a poorly understood and, usually a very badly implemented project management discipline. Managing projects in Africa, and by inference in South Africa, can be particularly complex – given the involvement of multiple stakeholders and their historical, geopolitical, economic relationships, and cultural differences. The study set out to develop a framework to improve the management of stakeholders in urban development projects – by investigating the critical success factors that have an influence on stakeholder management success in urban development projects in South Africa. This study is important primarily because there seems to be no previous research conducted on this important project management discipline, stakeholder management of urban development projects; and there seems to be a neglect of stakeholder management duties by urban development projects agencies, and by inference, projects practitioners in South Africa. A theoretical space was created for this study in the fraternal literature of previous studies on critical success factors and/or stakeholder management in construction projects – as there seem to be none undertaken in the urban development environment, particularly in the South African context.
- Full Text:
- Date Issued: 2012
Electrochemistry and photophysicochemical studies of titanium, tantalum and vanadium phthalocyanines in the presence of nanomaterials
- Authors: Chauke, Vongani Portia
- Date: 2012
- Subjects: Phthalocyanines -- Synthesis Electrochemistry Titanium Tantalum Vanadium
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4313 , http://hdl.handle.net/10962/d1004971
- Description: The syntheses of tetra- and octa-substituted phthalocyanine complexes of titanium (IV) oxide vanadium (IV) oxide and tantalum (V) hydroxide and their electrochemical characterisation are presented in this work. The structures and purity of these complexes were confirmed by NMR, infrared and mass spectroscopies and elemental analysis. They show good solubility in most common solvents especially non-viscous solvents such as dichloromethane and chloroform. The cyclic voltammograms (CV) showed reversible to quasi reversible behavior for all the reduction couples and the oxidation peaks were irreversible. Spectroelectrochemistry of the complexes confirmed metal and ring redox processes for TaPc and TiPc derivatives and ring based processes only for VPc complexes. The synthesis of gold nanoparticles and their conjugation with the new phthalocyanines was carried out. Similarly, single walled carbon nanotubes were conjugated to selected tantalum complexes and the characterization of all the nanomaterials and their conjugates using different techniques that include TEM, XRD and AFM is also presented in this work. The photophysical and photochemical properties and photocatalytic oxidation of cyclohexene properties of the newly synthesised in the presence of gold nanoparticles were investigated. The compounds were stable, well within the stability range for phthalocyanines. The singlet oxygen quantum yield values increased drastically in the presence of gold nanoparticles. The photocatalytic products obtained from the reaction were cyclohexene oxide, 2-cyclohexen-1-ol, 2-cyclohexene-1-one and 1,4-cyclohexanediol. The percentage conversion values, yields and selectivity values improved significantly in the presence of AuNPs. Singlet oxygen was determined to be the main agent involved in the photocatalytic oxidation of cyclohexene. The electrocatalytic oxidation of bisphenol A and p-nitrophenol was carried out using nickel tetraamino phthalocyanine and all the newly synthesised metallophthalocyanine in the presence of gold nanoparticles and single walled carbon nanotubes. The charge transfer behaviour of AuNPs was enhanced in the presence of TaPc, TiPc and VPc complexes. The presence of single walled carbon nanotubes further improved electron transfer and minimised electrode passivation.
- Full Text:
- Date Issued: 2012
- Authors: Chauke, Vongani Portia
- Date: 2012
- Subjects: Phthalocyanines -- Synthesis Electrochemistry Titanium Tantalum Vanadium
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4313 , http://hdl.handle.net/10962/d1004971
- Description: The syntheses of tetra- and octa-substituted phthalocyanine complexes of titanium (IV) oxide vanadium (IV) oxide and tantalum (V) hydroxide and their electrochemical characterisation are presented in this work. The structures and purity of these complexes were confirmed by NMR, infrared and mass spectroscopies and elemental analysis. They show good solubility in most common solvents especially non-viscous solvents such as dichloromethane and chloroform. The cyclic voltammograms (CV) showed reversible to quasi reversible behavior for all the reduction couples and the oxidation peaks were irreversible. Spectroelectrochemistry of the complexes confirmed metal and ring redox processes for TaPc and TiPc derivatives and ring based processes only for VPc complexes. The synthesis of gold nanoparticles and their conjugation with the new phthalocyanines was carried out. Similarly, single walled carbon nanotubes were conjugated to selected tantalum complexes and the characterization of all the nanomaterials and their conjugates using different techniques that include TEM, XRD and AFM is also presented in this work. The photophysical and photochemical properties and photocatalytic oxidation of cyclohexene properties of the newly synthesised in the presence of gold nanoparticles were investigated. The compounds were stable, well within the stability range for phthalocyanines. The singlet oxygen quantum yield values increased drastically in the presence of gold nanoparticles. The photocatalytic products obtained from the reaction were cyclohexene oxide, 2-cyclohexen-1-ol, 2-cyclohexene-1-one and 1,4-cyclohexanediol. The percentage conversion values, yields and selectivity values improved significantly in the presence of AuNPs. Singlet oxygen was determined to be the main agent involved in the photocatalytic oxidation of cyclohexene. The electrocatalytic oxidation of bisphenol A and p-nitrophenol was carried out using nickel tetraamino phthalocyanine and all the newly synthesised metallophthalocyanine in the presence of gold nanoparticles and single walled carbon nanotubes. The charge transfer behaviour of AuNPs was enhanced in the presence of TaPc, TiPc and VPc complexes. The presence of single walled carbon nanotubes further improved electron transfer and minimised electrode passivation.
- Full Text:
- Date Issued: 2012
Impact of animal traction power on agricultural productivity: case of lowlands of Mohale's Hoek district of Lesotho
- Rampokanyo, Lepolesa Michael
- Authors: Rampokanyo, Lepolesa Michael
- Date: 2012
- Subjects: Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11178 , http://hdl.handle.net/10353/483 , Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Description: Most farming at subsistence level is located in rural areas where the majority of smallholder farmers have low productivity which results in high rate of food insecurity. The areas are characterised by animal traction and poor farming practises, and monoculture is mostly preferred. In light of this, this study analyzed the impact of animal power on agricultural productivity. Smallholder farmers in the lowlands of Mohale’s Hoek district of Lesotho were investigated by means of a case study methodology. The aim of the study was to inform agricultural policy about the level and key determinants of inefficiency in the smallholder farming system so as to contribute to policy designed to raise productivity of smallholder farmers. The sampling frame comprised farmers and extension workers in the lowlands of Mohale’s Hoek district. From this frame, 118 farmers and 4 extension workers were randomly selected from four villages, namely‘Mapotsane, Potsane, Tsoloane and Siloe. The four groups of farmers include; the farmers owning and using cattle for ploughing, farmers owning tractor and cattle and using them for ploughing, farmers owning tractor only and using it for ploughing, and farmers who owned neither cattle nor tractor and normally hire these when ploughing operations are to be done on the farm. The interviews of these farmers and extension workers were conducted by means of semi-structured questionnaire which consisted of both open and close ended questions. The study used the stochastic frontier production model for the production efficiencies and linear regression model for the impact of animal traction on agricultural productivity. Both procedures provided insights into the relative contributions of animal power and traditional systems to poverty alleviation and food security in the project areas. Descriptive statistics were employed for farming systems and challenges facing small scale farmers. Gross Margins analysis was conducted for the animal power and tractor power yield levels for maize crop to compare the two types of power. Some diagnostic tests to detect serial correlation and heteroskedasticity and t-tests were also performed. The significant variables include the area of sorghum ploughed, members of the household that assist with family labour, education, quantity of fertilizer applied, time taken by the farmers in farming, members who are formally employed, household size, area of land ploughed, old age, costs of tractor and animal, marital status, income, area of maize ploughed, area of sorghum ploughed, quantity of fertilizers applied, costs of seeds and fertilizers applied, maize and sorghum yield and amount sold and consumed. The study revealed that monoculture is mainly practised and many smallholder farmers used traditional technologies that fail to replace nutrients in the soil. Nonetheless family labour was not a problem. During the farming season, tractors were used as the main source of power for ploughing. Most farmers hired these for maize production as it is a staple food crop even where animal power is available. It was noted that the tractors were few and in most cases old and malfunctioning. The cost of using animals in farming obviouslyplayed a role in the production of both maize v and sorghum in the lowland areas of Mohale’s Hoek district. Smallholder farmers who owned both tractors and animals produced more but they were mainly affected by high costs of maintaining the aging tractors, generally purchased on the used-equipment market. The increased challenges resulted in lower productivity of the smallholder farmers, including: unhealthy animals, drought, marketing problems, late ploughing, poor soils, lack of extension services, low yields, low income, lack of information, lack of appropriate implements, lack of support services, nutrition inadequacy, inappropriate farming systems. The study recommended the adoption and promotion of low-cost mechanization in the lowlands of Mohale’s Hoek district so as to increase the production of the smallholder farmers. Increased productivity will in turn improve household food security.
- Full Text:
- Date Issued: 2012
- Authors: Rampokanyo, Lepolesa Michael
- Date: 2012
- Subjects: Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11178 , http://hdl.handle.net/10353/483 , Animal traction -- Lesotho , Agricultural productivity -- Lesotho , Draft animals -- Lesotho , Food security -- Lesotho , Farm produce -- Lesotho
- Description: Most farming at subsistence level is located in rural areas where the majority of smallholder farmers have low productivity which results in high rate of food insecurity. The areas are characterised by animal traction and poor farming practises, and monoculture is mostly preferred. In light of this, this study analyzed the impact of animal power on agricultural productivity. Smallholder farmers in the lowlands of Mohale’s Hoek district of Lesotho were investigated by means of a case study methodology. The aim of the study was to inform agricultural policy about the level and key determinants of inefficiency in the smallholder farming system so as to contribute to policy designed to raise productivity of smallholder farmers. The sampling frame comprised farmers and extension workers in the lowlands of Mohale’s Hoek district. From this frame, 118 farmers and 4 extension workers were randomly selected from four villages, namely‘Mapotsane, Potsane, Tsoloane and Siloe. The four groups of farmers include; the farmers owning and using cattle for ploughing, farmers owning tractor and cattle and using them for ploughing, farmers owning tractor only and using it for ploughing, and farmers who owned neither cattle nor tractor and normally hire these when ploughing operations are to be done on the farm. The interviews of these farmers and extension workers were conducted by means of semi-structured questionnaire which consisted of both open and close ended questions. The study used the stochastic frontier production model for the production efficiencies and linear regression model for the impact of animal traction on agricultural productivity. Both procedures provided insights into the relative contributions of animal power and traditional systems to poverty alleviation and food security in the project areas. Descriptive statistics were employed for farming systems and challenges facing small scale farmers. Gross Margins analysis was conducted for the animal power and tractor power yield levels for maize crop to compare the two types of power. Some diagnostic tests to detect serial correlation and heteroskedasticity and t-tests were also performed. The significant variables include the area of sorghum ploughed, members of the household that assist with family labour, education, quantity of fertilizer applied, time taken by the farmers in farming, members who are formally employed, household size, area of land ploughed, old age, costs of tractor and animal, marital status, income, area of maize ploughed, area of sorghum ploughed, quantity of fertilizers applied, costs of seeds and fertilizers applied, maize and sorghum yield and amount sold and consumed. The study revealed that monoculture is mainly practised and many smallholder farmers used traditional technologies that fail to replace nutrients in the soil. Nonetheless family labour was not a problem. During the farming season, tractors were used as the main source of power for ploughing. Most farmers hired these for maize production as it is a staple food crop even where animal power is available. It was noted that the tractors were few and in most cases old and malfunctioning. The cost of using animals in farming obviouslyplayed a role in the production of both maize v and sorghum in the lowland areas of Mohale’s Hoek district. Smallholder farmers who owned both tractors and animals produced more but they were mainly affected by high costs of maintaining the aging tractors, generally purchased on the used-equipment market. The increased challenges resulted in lower productivity of the smallholder farmers, including: unhealthy animals, drought, marketing problems, late ploughing, poor soils, lack of extension services, low yields, low income, lack of information, lack of appropriate implements, lack of support services, nutrition inadequacy, inappropriate farming systems. The study recommended the adoption and promotion of low-cost mechanization in the lowlands of Mohale’s Hoek district so as to increase the production of the smallholder farmers. Increased productivity will in turn improve household food security.
- Full Text:
- Date Issued: 2012
The prevalence of overweight and obesity of six to nine year old black African children in a rural town of Mpumalanga
- Authors: Bezuidenhout, Hanlie Pearl
- Date: 2012
- Subjects: Obesity in children -- South Africa -- Mpumalanga , Overweight children -- South Africa -- Mpumalanga , Obesity in children -- Prevention
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10090 , http://hdl.handle.net/10948/1602 , Obesity in children -- South Africa -- Mpumalanga , Overweight children -- South Africa -- Mpumalanga , Obesity in children -- Prevention
- Description: The aim of the study was to determine the Body Mass Index with regards to overweight and obesity of Black African children between the ages of six and nine years who were enrolled in three rural public schools within Mpumalanga Province, South Africa. The researcher used a quantitative descriptive research design. Each child’s weight and height was measured and their BMI and BMI percentile for gender and age calculated. According to the BMI percentile calculations for gender and age for the sample which consisted of 902 children, three percent were defined as being underweight, 79 percent as being normal weight, 11 percent as being overweight, and seven percent as being obese. In the sample there were also 21.3 percent children who were at risk of becoming overweight (3.5 percent) and obese (17.8 percent). Without intervention these at risk learners may in their adolescent and adult years be adversely affected by the physiological and psychosocial consequences related to their condition. Suggestion is made to utilise a Forum through which various stakeholders can pool their expertise and resources to develop a programme of intervention with the aim to prevent escalation of overweight and obesity, as well as reversing the current prevalence as identified within the research population.
- Full Text:
- Date Issued: 2012
- Authors: Bezuidenhout, Hanlie Pearl
- Date: 2012
- Subjects: Obesity in children -- South Africa -- Mpumalanga , Overweight children -- South Africa -- Mpumalanga , Obesity in children -- Prevention
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10090 , http://hdl.handle.net/10948/1602 , Obesity in children -- South Africa -- Mpumalanga , Overweight children -- South Africa -- Mpumalanga , Obesity in children -- Prevention
- Description: The aim of the study was to determine the Body Mass Index with regards to overweight and obesity of Black African children between the ages of six and nine years who were enrolled in three rural public schools within Mpumalanga Province, South Africa. The researcher used a quantitative descriptive research design. Each child’s weight and height was measured and their BMI and BMI percentile for gender and age calculated. According to the BMI percentile calculations for gender and age for the sample which consisted of 902 children, three percent were defined as being underweight, 79 percent as being normal weight, 11 percent as being overweight, and seven percent as being obese. In the sample there were also 21.3 percent children who were at risk of becoming overweight (3.5 percent) and obese (17.8 percent). Without intervention these at risk learners may in their adolescent and adult years be adversely affected by the physiological and psychosocial consequences related to their condition. Suggestion is made to utilise a Forum through which various stakeholders can pool their expertise and resources to develop a programme of intervention with the aim to prevent escalation of overweight and obesity, as well as reversing the current prevalence as identified within the research population.
- Full Text:
- Date Issued: 2012
Synthesis and physicochemical behavior of new low symmetry Ge, Ti and Sn phthalocyanines
- Masilela, Nkosiphile, Nyokong, Tebello
- Authors: Masilela, Nkosiphile , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/242421 , vital:51040 , xlink:href="https://doi.org/10.1016/j.synthmet.2012.07.028"
- Description: The synthesis and photophysicochemical properties of new low symmetrically Ge, Sn and Ti phthalocyanines substituted with one carboxy containing group are reported. Broading and splitting in the absorption spectra were observed for some of the complexes in particular for both the titanium Pcs due to loss of symmetry. Higher fluorescence quantum yields and lifetimes were obtained for the Pcs substituted with three benzyloxy (5–7) compared to their corresponding counterparts substituted with six 2-diethylaminoethylthiol groups (9–11). The germanium Pc complexes gave the highest triplet and singlet oxygen quantum yields compared to all the other complexes studied in DMF. All the complexes showed reasonable ability to generate singlet oxygen with quantum yields ranging from 0.54 to 0.69.
- Full Text:
- Date Issued: 2012
- Authors: Masilela, Nkosiphile , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/242421 , vital:51040 , xlink:href="https://doi.org/10.1016/j.synthmet.2012.07.028"
- Description: The synthesis and photophysicochemical properties of new low symmetrically Ge, Sn and Ti phthalocyanines substituted with one carboxy containing group are reported. Broading and splitting in the absorption spectra were observed for some of the complexes in particular for both the titanium Pcs due to loss of symmetry. Higher fluorescence quantum yields and lifetimes were obtained for the Pcs substituted with three benzyloxy (5–7) compared to their corresponding counterparts substituted with six 2-diethylaminoethylthiol groups (9–11). The germanium Pc complexes gave the highest triplet and singlet oxygen quantum yields compared to all the other complexes studied in DMF. All the complexes showed reasonable ability to generate singlet oxygen with quantum yields ranging from 0.54 to 0.69.
- Full Text:
- Date Issued: 2012
The impact of violent conflict on rural development : a case study of Mawku Municipal area, Ghana
- Authors: Malik-Kusi, Georgina Leila
- Date: 2012
- Subjects: Rural development -- Ghana -- Case studies
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9111 , http://hdl.handle.net/10948/d1015016
- Description: Development has suffered a great deal due to the frequent changes that occur in life and these changes inevitably cause conflict. A typical example is the research setting, the Bawku Municipal area in Ghana. This area has suffered severe forms of conflict which in one way or the other have affected the development of the district and the people as a whole. The effect of conflict has not only affected the rural development but also social, human, intellectual, economic and technological developments in general. While the aim of all countries is to develop, some may have reached a stage where they qualify as developed; others are still in the process of reaching their goal; yet others are still struggling to barely survive thus the names ‗developed countries, developing countries and under developed countries‘. Most developing countries are faced with the problem of rural underdevelopment and Ghana is no exception. Most rural areas have been neglected in the development project of the country. Resources are channelled to the urban areas and other places where the government reaps profits; however the Bawku municipal area has not only suffered underdevelopment from government negligence but also from conflict. The district of Bawku has been in tribal war stretching for the past ten years. This has stalled most developmental works from both government and external bodies. The area is one of the poorest places in Ghana; the problem is not only with rural development but social, economic and human development as well.
- Full Text:
- Date Issued: 2012
- Authors: Malik-Kusi, Georgina Leila
- Date: 2012
- Subjects: Rural development -- Ghana -- Case studies
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9111 , http://hdl.handle.net/10948/d1015016
- Description: Development has suffered a great deal due to the frequent changes that occur in life and these changes inevitably cause conflict. A typical example is the research setting, the Bawku Municipal area in Ghana. This area has suffered severe forms of conflict which in one way or the other have affected the development of the district and the people as a whole. The effect of conflict has not only affected the rural development but also social, human, intellectual, economic and technological developments in general. While the aim of all countries is to develop, some may have reached a stage where they qualify as developed; others are still in the process of reaching their goal; yet others are still struggling to barely survive thus the names ‗developed countries, developing countries and under developed countries‘. Most developing countries are faced with the problem of rural underdevelopment and Ghana is no exception. Most rural areas have been neglected in the development project of the country. Resources are channelled to the urban areas and other places where the government reaps profits; however the Bawku municipal area has not only suffered underdevelopment from government negligence but also from conflict. The district of Bawku has been in tribal war stretching for the past ten years. This has stalled most developmental works from both government and external bodies. The area is one of the poorest places in Ghana; the problem is not only with rural development but social, economic and human development as well.
- Full Text:
- Date Issued: 2012
The impact of crime on the South African economic growth
- Authors: Mtati, Nokuzola Julia
- Date: 2012
- Subjects: Crime -- Economic aspects -- South Africa , Crime -- Sociological aspects , Economic development -- South Africa , Criminal behavior
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9131 , http://hdl.handle.net/10948/d1018644
- Description: Crime in South Africa has been escalating over the past few years. Crime affects all societies in South Africa. It occurs amongst the rich and the poor, in the suburbs as well as in the townships. Serious and violent crimes are reported in most of the national newspapers almost on daily basis. There is no single satisfactory answer as to the causes of crimes and its impact on the economy of South Africa. The aim of this research report is to assess the impact of crime in the South African economy. In order to formulate a conceptual and theoretical framework of the study, growth theories, namely neoclassical growth theory, Harrod-Domar growth model classical growth theory and endogenous growth theory were presented. Although all these growth theories relate to this study as crime cuts-across all sectors of the economy the endogenous growth theory was chosen as a theoretical framework on which to base this study. Endogenous growth theory deals with domestic absorption. Crime interferes with this absorption as it constitutes a cost to the economy. Firms lose profits whilst the opportunity cost of running prisons using a tax payers’ money continues to grow. This study is based on a quantitative research technique, using a vector error correction model (VECM) on a quarterly time series data over a period 2003 to 2011. The variables used to explain variations in economic growth over this period are crime, real interest rates, real exchange rates, unemployment and poverty. The findings of this study suggest that crime exerts a negative impact on economic growth in a long run in South Africa. However, this relationship is not statistically significant both in a short run and a long run. . However, no evidence of short run adjustments between crime and economic growth were found. There is a long run negative relationship between real interest rates and economic growth. This relationship is also statistically significant in a long run but not in a short run. However, the relationship between real interest rates and economic growth is positive in a short run. This can be explained by the fact that high interest rates attract foreign investments causing a rise in economic growth but in a long run high interest rates dampen domestic investments thereby aggravating the unemployment problem. Rising unemployment is likely to lead to increase levels of crime in South Africa. The results also show that unemployment has a negative relationship with economic growth both in the short run and a long run. However this relationship is not statistically significant in a short run but in a long run. Poverty has a negative relationship with economic growth in a short run but a positive relationship in a long run. However, in both instances the relationship between poverty and economic growth is not statistically significant. Real exchange rate has a positive relationship with economic growth in a long run but a negative relationship in a short run. This relationship is statistically significant in a long run but not in a short run. This means that the benefits of a weak currency in South Africa are realised in a long run. The implications of this study with regard to the variable of interest namely crime, is that crime constitutes a cost to the economy of South Africa. The econometric modelling used in this study suggests a negative relationship between crime and economic growth. This means that the problem of crime in South Africa goes beyond just simple counts on a number of offenses. Based on the findings of this study it is recommended that crime prevention is better than cure. Crime prevention should use a wide range of ideas and abilities found throughout the society. Community planning, neighbourhood action, juvenile advocacy, security planning, education and training are some of the ways in which crime actions can be mitigated in South Africa.
- Full Text:
- Date Issued: 2012
- Authors: Mtati, Nokuzola Julia
- Date: 2012
- Subjects: Crime -- Economic aspects -- South Africa , Crime -- Sociological aspects , Economic development -- South Africa , Criminal behavior
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9131 , http://hdl.handle.net/10948/d1018644
- Description: Crime in South Africa has been escalating over the past few years. Crime affects all societies in South Africa. It occurs amongst the rich and the poor, in the suburbs as well as in the townships. Serious and violent crimes are reported in most of the national newspapers almost on daily basis. There is no single satisfactory answer as to the causes of crimes and its impact on the economy of South Africa. The aim of this research report is to assess the impact of crime in the South African economy. In order to formulate a conceptual and theoretical framework of the study, growth theories, namely neoclassical growth theory, Harrod-Domar growth model classical growth theory and endogenous growth theory were presented. Although all these growth theories relate to this study as crime cuts-across all sectors of the economy the endogenous growth theory was chosen as a theoretical framework on which to base this study. Endogenous growth theory deals with domestic absorption. Crime interferes with this absorption as it constitutes a cost to the economy. Firms lose profits whilst the opportunity cost of running prisons using a tax payers’ money continues to grow. This study is based on a quantitative research technique, using a vector error correction model (VECM) on a quarterly time series data over a period 2003 to 2011. The variables used to explain variations in economic growth over this period are crime, real interest rates, real exchange rates, unemployment and poverty. The findings of this study suggest that crime exerts a negative impact on economic growth in a long run in South Africa. However, this relationship is not statistically significant both in a short run and a long run. . However, no evidence of short run adjustments between crime and economic growth were found. There is a long run negative relationship between real interest rates and economic growth. This relationship is also statistically significant in a long run but not in a short run. However, the relationship between real interest rates and economic growth is positive in a short run. This can be explained by the fact that high interest rates attract foreign investments causing a rise in economic growth but in a long run high interest rates dampen domestic investments thereby aggravating the unemployment problem. Rising unemployment is likely to lead to increase levels of crime in South Africa. The results also show that unemployment has a negative relationship with economic growth both in the short run and a long run. However this relationship is not statistically significant in a short run but in a long run. Poverty has a negative relationship with economic growth in a short run but a positive relationship in a long run. However, in both instances the relationship between poverty and economic growth is not statistically significant. Real exchange rate has a positive relationship with economic growth in a long run but a negative relationship in a short run. This relationship is statistically significant in a long run but not in a short run. This means that the benefits of a weak currency in South Africa are realised in a long run. The implications of this study with regard to the variable of interest namely crime, is that crime constitutes a cost to the economy of South Africa. The econometric modelling used in this study suggests a negative relationship between crime and economic growth. This means that the problem of crime in South Africa goes beyond just simple counts on a number of offenses. Based on the findings of this study it is recommended that crime prevention is better than cure. Crime prevention should use a wide range of ideas and abilities found throughout the society. Community planning, neighbourhood action, juvenile advocacy, security planning, education and training are some of the ways in which crime actions can be mitigated in South Africa.
- Full Text:
- Date Issued: 2012
The extent of accessibility of public buildings to persons with disabilities in Kenya
- Authors: Maigua, Mwaura Isaac
- Date: 2012
- Subjects: Buildings -- Barrier-free design -- Kenya , People with disabilities -- Kenya , Barrier-free design -- Kenya
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9124 , http://hdl.handle.net/10948/d1017098
- Description: Many countries in the world have in recent years developed measures to increase accessibility to the built environment for persons with disabilities. Of particular concern are facilities such as roads, railways and public premises. The United Nations Convention on the Rights of Persons With Disabilities (CRPD) confers accessibility as a right and gives responsibility to state parties to ensure to persons with disabilities (PWDs) a barrier free environment. The Constitution of Kenya (2010) states that PWDs have a right to facilities including educational that integrate their needs. The Person With Disabilities Act (2003) provides for mechanisms through which such enforcements can be enacted. The body responsible for implementing the Act has developed minimum accessibility guidelines to inform this endeavor as part of Kenya‟s dream of becoming a middle income economy by the year 2030. This research report/treatise details the findings of a pilot baseline survey study conducted in Nairobi, Kisumu and Mombasa Cities.
- Full Text:
- Date Issued: 2012
- Authors: Maigua, Mwaura Isaac
- Date: 2012
- Subjects: Buildings -- Barrier-free design -- Kenya , People with disabilities -- Kenya , Barrier-free design -- Kenya
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9124 , http://hdl.handle.net/10948/d1017098
- Description: Many countries in the world have in recent years developed measures to increase accessibility to the built environment for persons with disabilities. Of particular concern are facilities such as roads, railways and public premises. The United Nations Convention on the Rights of Persons With Disabilities (CRPD) confers accessibility as a right and gives responsibility to state parties to ensure to persons with disabilities (PWDs) a barrier free environment. The Constitution of Kenya (2010) states that PWDs have a right to facilities including educational that integrate their needs. The Person With Disabilities Act (2003) provides for mechanisms through which such enforcements can be enacted. The body responsible for implementing the Act has developed minimum accessibility guidelines to inform this endeavor as part of Kenya‟s dream of becoming a middle income economy by the year 2030. This research report/treatise details the findings of a pilot baseline survey study conducted in Nairobi, Kisumu and Mombasa Cities.
- Full Text:
- Date Issued: 2012
An investigation into information security practices implemented by Research and Educational Network of Uganda (RENU) member institution
- Authors: Kisakye, Alex
- Date: 2012 , 2012-11-06
- Subjects: Research and Educational Network of Uganda , Computer security -- Education (Higher) -- Uganda , Computer networks -- Security measures -- Education (Higher) -- Uganda , Management -- Computer network resources -- Education (Higher) -- Uganda , Computer hackers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4586 , http://hdl.handle.net/10962/d1004748 , Research and Educational Network of Uganda , Computer security -- Education (Higher) -- Uganda , Computer networks -- Security measures -- Education (Higher) -- Uganda , Management -- Computer network resources -- Education (Higher) -- Uganda , Computer hackers
- Description: Educational institutions are known to be at the heart of complex computing systems in any region in which they exist, especially in Africa. The existence of high end computing power, often connected to the Internet and to research network grids, makes educational institutions soft targets for attackers. Attackers of such networks are normally either looking to exploit the large computing resources available for use in secondary attacks or to steal Intellectual Property (IP) from the research networks to which the institutions belong. Universities also store a lot of information about their current students and staff population as well as alumni ranging from personal to financial information. Unauthorized access to such information violates statutory requirement of the law and could grossly tarnish the institutions name not to mention cost the institution a lot of money during post-incident activities. The purpose of this study was to investigate the information security practices that have been put in place by Research and Education Network of Uganda (RENU) member institutions to safeguard institutional data and systems from both internal and external security threats. The study was conducted on six member institutions in three phases, between the months of May and July 2011 in Uganda. Phase One involved the use of a customised quantitative questionnaire tool. The tool - originally developed by information security governance task-force of EDUCAUSE - was customised for use in Uganda. Phase Two involved the use of a qualitative interview guide in a sessions between the investigator and respondents. Results show that institutions rely heavily on Information and Communication Technology (ICT) systems and services and that all institutions had already acquired more than three information systems and had acquired and implemented some of the cutting edge equipment and systems in their data centres. Further results show that institutions have established ICT departments although staff have not been trained in information security. All institutions interviewed have ICT policies although only a few have carried out policy sensitization and awareness campaigns for their staff and students. , TeX
- Full Text:
- Date Issued: 2012
- Authors: Kisakye, Alex
- Date: 2012 , 2012-11-06
- Subjects: Research and Educational Network of Uganda , Computer security -- Education (Higher) -- Uganda , Computer networks -- Security measures -- Education (Higher) -- Uganda , Management -- Computer network resources -- Education (Higher) -- Uganda , Computer hackers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4586 , http://hdl.handle.net/10962/d1004748 , Research and Educational Network of Uganda , Computer security -- Education (Higher) -- Uganda , Computer networks -- Security measures -- Education (Higher) -- Uganda , Management -- Computer network resources -- Education (Higher) -- Uganda , Computer hackers
- Description: Educational institutions are known to be at the heart of complex computing systems in any region in which they exist, especially in Africa. The existence of high end computing power, often connected to the Internet and to research network grids, makes educational institutions soft targets for attackers. Attackers of such networks are normally either looking to exploit the large computing resources available for use in secondary attacks or to steal Intellectual Property (IP) from the research networks to which the institutions belong. Universities also store a lot of information about their current students and staff population as well as alumni ranging from personal to financial information. Unauthorized access to such information violates statutory requirement of the law and could grossly tarnish the institutions name not to mention cost the institution a lot of money during post-incident activities. The purpose of this study was to investigate the information security practices that have been put in place by Research and Education Network of Uganda (RENU) member institutions to safeguard institutional data and systems from both internal and external security threats. The study was conducted on six member institutions in three phases, between the months of May and July 2011 in Uganda. Phase One involved the use of a customised quantitative questionnaire tool. The tool - originally developed by information security governance task-force of EDUCAUSE - was customised for use in Uganda. Phase Two involved the use of a qualitative interview guide in a sessions between the investigator and respondents. Results show that institutions rely heavily on Information and Communication Technology (ICT) systems and services and that all institutions had already acquired more than three information systems and had acquired and implemented some of the cutting edge equipment and systems in their data centres. Further results show that institutions have established ICT departments although staff have not been trained in information security. All institutions interviewed have ICT policies although only a few have carried out policy sensitization and awareness campaigns for their staff and students. , TeX
- Full Text:
- Date Issued: 2012
The narrative of vulnerability and deprivation in protection regimes for the internally displaced persons (IDPs) in Africa: an appraisal of the Kampala Convention
- Authors: Juma, Laurence
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/128448 , vital:36110 , https://heinonline.org/HOL/Page?handle=hein.journals/laacydev16amp;div=14amp;g_sent=1amp;casa_token=amp;collection=journals
- Description: Prior to the 1990s, the phenomenon of internal displacement did not attract much attention from the international community. Most states, suspicious of the external interests in what they considered to be a purely internal matter were not keen to expose difficulties or suffering of their displaced citizens. And insistence on protection of the internally displaced by international organisations was seen as an affront to sovereignty.
- Full Text: false
- Date Issued: 2012
- Authors: Juma, Laurence
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/128448 , vital:36110 , https://heinonline.org/HOL/Page?handle=hein.journals/laacydev16amp;div=14amp;g_sent=1amp;casa_token=amp;collection=journals
- Description: Prior to the 1990s, the phenomenon of internal displacement did not attract much attention from the international community. Most states, suspicious of the external interests in what they considered to be a purely internal matter were not keen to expose difficulties or suffering of their displaced citizens. And insistence on protection of the internally displaced by international organisations was seen as an affront to sovereignty.
- Full Text: false
- Date Issued: 2012
Contribution towards the development of a management plan for the baitboat and sport fishery for tuna in South Africa
- Authors: Newcombe, Hylton Cecil
- Date: 2012
- Subjects: Tuna -- South Africa , Tuna fishing -- South Africa , Fishery management -- South Africa , Fishery management -- Economic aspects -- South Africa , Tuna fisheries -- Catch effort -- South Africa , Tuna fisheries -- Economic aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5249 , http://hdl.handle.net/10962/d1005092 , Tuna -- South Africa , Tuna fishing -- South Africa , Fishery management -- South Africa , Fishery management -- Economic aspects -- South Africa , Tuna fisheries -- Catch effort -- South Africa , Tuna fisheries -- Economic aspects -- South Africa
- Description: Tuna are of significant global economic importance and a prime food source. Increased levels of fishing have resulted in many stocks being under threat and a number of species are considered to be overfished. The South African tuna industry has had limited management attention from the South African fisheries management agency. A recent development has been an increase in the number of tuna caught by small vessels that target the fresh tuna market in South Africa and overseas. This has highlighted the importance of developing a holistic management plan for the sector and creating an awareness, among vessel owners, of the importance of compliance with initiatives such as the Marine Stewardship Council (MSC). The South African tuna fishery comprises three sectors: baitboat, sport and longline, all of which are currently in need of acquiring more biological and fisheries data. This project was initiated to collate existing information and to collect additional information where possible. This encompassed a qualitative and quantitative assessment of the size and shape of the tuna fishing industry, which included estimates of total catch, effort, catch-per-unit-of-effort (CPUE) and stock structure (obtained through comparative estimates of age and growth), as well as socio-economic and economic information. A technique involving an examination of specific vertebrae was used to obtain age-growth information for T. albacares. These data were used to estimate von Bertalanffy (VBGF) growth parameters: F 2 1. , k 0.1 , and t₀ -0. 1 year. No significant differences in growth parameters were found in yellowfin tuna (Thunnus albacares) from different localities around the South African coast, i.e. from the south eastern Atlantic and the south western Indian Ocean. In addition, growth did not differ between South Africa and other regions (Draganic and Pelzcarski 1984, Fonteneau 1980, Gascuel et al. 1992, LeGuen and Sakagawa 1973, Lehodey and Leroy 1999, Lessa and Duarte-Neto 2004, Shuford et al. 2007, Stequert et al. 1996, Wild 1986, Yang et al. 1969). Further substantiation of the above-mentioned observations was found by recording differences in the sizes of fish caught in the inshore (baitboat and sport fishery vessels) and offshore (large pelagic longline vessels) sectors of South African tuna fisheries. A significant difference between the regions — in terms of the size of fish caught inshore — was noted, with mostly-juvenile fish being caught in KwaZulu-Natal (5.4 ± 3.5kg), sub-adult fish in the Eastern Cape (26.2 ± 13.4kg), and adult fish in the Western Cape (42.3 ± 14.4kg). Since mostly-adult fish were caught offshore by longliners, with no significant differences between regions, it is however possible th at adult fish predominantly inhabit the offshore region. Yellowfin tuna caught by the large pelagic longline fishery in the three managerial zones (A, B and C) were predominantly adult fish of similar size, namely Zone A: 38.9 ± 6.9kg; Zone B: 28.7 ± 4.6kg, and Zone C: 36.0 ± 5.1kg. The recreational ski boat sport fishery has remained stable, in terms of participation, consisting mostly of white middle aged males in the top 25% of household income distribution, having either permanent occupational status or being retired. Fishers within this sector are willing to incur great expense to partake in the fishery and they provide an important economic contribution to coastal towns, particularly in the Eastern Cape. The total catch (of 83t) of yellowfin tuna by the competitive sport fishery within the Western and Eastern Cape regions was considerably lower than that of commercial tuna baitboat catches, which amounted to 186t, and the large pelagic longline sector that caught t in 200. It is however likely that the competitive sport fishery's total yellowfin tuna catch (of 83t in 2009) of the Eastern and Western Cape competitive sport fishery was considerably less than the total yellowfin tuna catches of the whole South African deep-sea sport fishery. Longfin tuna are the primary target species of South Africa‘s baitboat fisheries, comprising an average of 86% of the total catch and generating ZAR49 million in employment income in 2002. South Africa was responsible for 20% of the total longfin tuna annual yield in 2004 in the southern Atlantic Ocean, behind Taiwan with 59%. However, yellowfin tuna only contributes a small percentage towards total catches (8.4 ± 8.2% between 1995 and 2009), generating ZAR1.3 million in employment income in 2002. Of the four vessel categories comprising the tuna baitboat fishery, ski boats had the highest yellowfin tuna CPUE in 2009 (117 ± 62 kg.vessel⁻¹.day⁻¹) and the lowest effort. The ski boats sector is the most opportunistic fishery as they are only active when either longfin or yellowfin tuna are in high abundance. At such times catches are guaranteed, so can be expected to offset expenses. In 2009 the CPUE for yellowfin tuna for 15–19m vessels and freezer deckboats was 12 ± 20kg.vessel⁻¹.day⁻¹ and 3 ± 6kg.vessel⁻¹.day⁻¹, respectively. These vessels specifically target longfin tuna when they are in abundance. Since the start of the tuna baitboat fishery in 1995, there has been a substantial increase in the number of new entrants. In 2002 this sector had a fleet size of 82 vessels with a capital value of ZAR163 million and a total employment income of ZAR58 million, employing 2 173 fishers, of which 87% were black African. The commercial tuna baitboat fleet has subsequently grown to 200 vessels and 3600 crew, with 110 active vessels fishing for a combined fleet average of 46 days per year. There are a high number of owner-operated vessels. Since 2007 the fishery's profit to cost ratio has been low due to the low abundance of tuna stocks off the coast of South Africa, which has resulted in poor catch returns, placing economic pressure on the fishery. The baitboat industry is a low-profit-margin fishery with a total net catch value worth ZAR90 million in 2009 (Feike 2010). The abundance of yellowfin tuna influences profit margins, with very high profits being made when abundance and catches are high. The large pelagic longline fishery has a total allowable effort of 43 vessels of which only 30 vessels fished during 2009, when a reported 766t of yellowfin tuna were caught, representing a total tonnage far in excess of that obtained by the combined effort of the baitboat and sport fishery. It is, however, assumed that considerable underreporting of catches takes place within this fishery, which means that the estimated total net catch value of ZAR100 million could, in fact, be much higher. Such underreporting of catches is of great concern for this fishery, as is the high bycatch of Chondricthians spp. that significantly outweighs imposed regulatory limits (DEAT 2007). The present study demonstrates the current lack of comprehensive catch and effort data for the sport, baitboat and longline fisheries as well as the serious limitations and flaws associated with current databases. Results from the present study have drawn attention to a number of high-priority research needs, as outlined below. (1) A major lack of comprehensive catch and effort data for the sport fishery, which can be rectified by focussing on obtaining more competition data, as well as high-quality catch and effort and socio-economic information, as opposed to relying on information from non-club anglers (Gartside et al. 1999, Williams 2003, Cass-Calay 2008). Acquisition of such data is relatively inexpensive: the location of organized clubs and their frequent competition meetings provide widespread coverage along the Southern African coastline. Such data acquisition efforts have the potential to provide reliable information on spatial catch trends. (2) Validation of vessel catch return data is required for commercial fisheries and on some recent data that has emerged from studies of catch rates and trends for target species, particularly in the longline fishery. In this context it should be noted that the most recent peer-reviewed publications on this exploratory fishery were published more than a decade ago (Kroese 1999, Penny and Griffiths 1999). Additional studies need to be undertaken and journal articles published on the current stock status of South African catches of yellowfin and bigeye tuna and swordfish.
- Full Text:
- Date Issued: 2012
- Authors: Newcombe, Hylton Cecil
- Date: 2012
- Subjects: Tuna -- South Africa , Tuna fishing -- South Africa , Fishery management -- South Africa , Fishery management -- Economic aspects -- South Africa , Tuna fisheries -- Catch effort -- South Africa , Tuna fisheries -- Economic aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5249 , http://hdl.handle.net/10962/d1005092 , Tuna -- South Africa , Tuna fishing -- South Africa , Fishery management -- South Africa , Fishery management -- Economic aspects -- South Africa , Tuna fisheries -- Catch effort -- South Africa , Tuna fisheries -- Economic aspects -- South Africa
- Description: Tuna are of significant global economic importance and a prime food source. Increased levels of fishing have resulted in many stocks being under threat and a number of species are considered to be overfished. The South African tuna industry has had limited management attention from the South African fisheries management agency. A recent development has been an increase in the number of tuna caught by small vessels that target the fresh tuna market in South Africa and overseas. This has highlighted the importance of developing a holistic management plan for the sector and creating an awareness, among vessel owners, of the importance of compliance with initiatives such as the Marine Stewardship Council (MSC). The South African tuna fishery comprises three sectors: baitboat, sport and longline, all of which are currently in need of acquiring more biological and fisheries data. This project was initiated to collate existing information and to collect additional information where possible. This encompassed a qualitative and quantitative assessment of the size and shape of the tuna fishing industry, which included estimates of total catch, effort, catch-per-unit-of-effort (CPUE) and stock structure (obtained through comparative estimates of age and growth), as well as socio-economic and economic information. A technique involving an examination of specific vertebrae was used to obtain age-growth information for T. albacares. These data were used to estimate von Bertalanffy (VBGF) growth parameters: F 2 1. , k 0.1 , and t₀ -0. 1 year. No significant differences in growth parameters were found in yellowfin tuna (Thunnus albacares) from different localities around the South African coast, i.e. from the south eastern Atlantic and the south western Indian Ocean. In addition, growth did not differ between South Africa and other regions (Draganic and Pelzcarski 1984, Fonteneau 1980, Gascuel et al. 1992, LeGuen and Sakagawa 1973, Lehodey and Leroy 1999, Lessa and Duarte-Neto 2004, Shuford et al. 2007, Stequert et al. 1996, Wild 1986, Yang et al. 1969). Further substantiation of the above-mentioned observations was found by recording differences in the sizes of fish caught in the inshore (baitboat and sport fishery vessels) and offshore (large pelagic longline vessels) sectors of South African tuna fisheries. A significant difference between the regions — in terms of the size of fish caught inshore — was noted, with mostly-juvenile fish being caught in KwaZulu-Natal (5.4 ± 3.5kg), sub-adult fish in the Eastern Cape (26.2 ± 13.4kg), and adult fish in the Western Cape (42.3 ± 14.4kg). Since mostly-adult fish were caught offshore by longliners, with no significant differences between regions, it is however possible th at adult fish predominantly inhabit the offshore region. Yellowfin tuna caught by the large pelagic longline fishery in the three managerial zones (A, B and C) were predominantly adult fish of similar size, namely Zone A: 38.9 ± 6.9kg; Zone B: 28.7 ± 4.6kg, and Zone C: 36.0 ± 5.1kg. The recreational ski boat sport fishery has remained stable, in terms of participation, consisting mostly of white middle aged males in the top 25% of household income distribution, having either permanent occupational status or being retired. Fishers within this sector are willing to incur great expense to partake in the fishery and they provide an important economic contribution to coastal towns, particularly in the Eastern Cape. The total catch (of 83t) of yellowfin tuna by the competitive sport fishery within the Western and Eastern Cape regions was considerably lower than that of commercial tuna baitboat catches, which amounted to 186t, and the large pelagic longline sector that caught t in 200. It is however likely that the competitive sport fishery's total yellowfin tuna catch (of 83t in 2009) of the Eastern and Western Cape competitive sport fishery was considerably less than the total yellowfin tuna catches of the whole South African deep-sea sport fishery. Longfin tuna are the primary target species of South Africa‘s baitboat fisheries, comprising an average of 86% of the total catch and generating ZAR49 million in employment income in 2002. South Africa was responsible for 20% of the total longfin tuna annual yield in 2004 in the southern Atlantic Ocean, behind Taiwan with 59%. However, yellowfin tuna only contributes a small percentage towards total catches (8.4 ± 8.2% between 1995 and 2009), generating ZAR1.3 million in employment income in 2002. Of the four vessel categories comprising the tuna baitboat fishery, ski boats had the highest yellowfin tuna CPUE in 2009 (117 ± 62 kg.vessel⁻¹.day⁻¹) and the lowest effort. The ski boats sector is the most opportunistic fishery as they are only active when either longfin or yellowfin tuna are in high abundance. At such times catches are guaranteed, so can be expected to offset expenses. In 2009 the CPUE for yellowfin tuna for 15–19m vessels and freezer deckboats was 12 ± 20kg.vessel⁻¹.day⁻¹ and 3 ± 6kg.vessel⁻¹.day⁻¹, respectively. These vessels specifically target longfin tuna when they are in abundance. Since the start of the tuna baitboat fishery in 1995, there has been a substantial increase in the number of new entrants. In 2002 this sector had a fleet size of 82 vessels with a capital value of ZAR163 million and a total employment income of ZAR58 million, employing 2 173 fishers, of which 87% were black African. The commercial tuna baitboat fleet has subsequently grown to 200 vessels and 3600 crew, with 110 active vessels fishing for a combined fleet average of 46 days per year. There are a high number of owner-operated vessels. Since 2007 the fishery's profit to cost ratio has been low due to the low abundance of tuna stocks off the coast of South Africa, which has resulted in poor catch returns, placing economic pressure on the fishery. The baitboat industry is a low-profit-margin fishery with a total net catch value worth ZAR90 million in 2009 (Feike 2010). The abundance of yellowfin tuna influences profit margins, with very high profits being made when abundance and catches are high. The large pelagic longline fishery has a total allowable effort of 43 vessels of which only 30 vessels fished during 2009, when a reported 766t of yellowfin tuna were caught, representing a total tonnage far in excess of that obtained by the combined effort of the baitboat and sport fishery. It is, however, assumed that considerable underreporting of catches takes place within this fishery, which means that the estimated total net catch value of ZAR100 million could, in fact, be much higher. Such underreporting of catches is of great concern for this fishery, as is the high bycatch of Chondricthians spp. that significantly outweighs imposed regulatory limits (DEAT 2007). The present study demonstrates the current lack of comprehensive catch and effort data for the sport, baitboat and longline fisheries as well as the serious limitations and flaws associated with current databases. Results from the present study have drawn attention to a number of high-priority research needs, as outlined below. (1) A major lack of comprehensive catch and effort data for the sport fishery, which can be rectified by focussing on obtaining more competition data, as well as high-quality catch and effort and socio-economic information, as opposed to relying on information from non-club anglers (Gartside et al. 1999, Williams 2003, Cass-Calay 2008). Acquisition of such data is relatively inexpensive: the location of organized clubs and their frequent competition meetings provide widespread coverage along the Southern African coastline. Such data acquisition efforts have the potential to provide reliable information on spatial catch trends. (2) Validation of vessel catch return data is required for commercial fisheries and on some recent data that has emerged from studies of catch rates and trends for target species, particularly in the longline fishery. In this context it should be noted that the most recent peer-reviewed publications on this exploratory fishery were published more than a decade ago (Kroese 1999, Penny and Griffiths 1999). Additional studies need to be undertaken and journal articles published on the current stock status of South African catches of yellowfin and bigeye tuna and swordfish.
- Full Text:
- Date Issued: 2012
The participation of teachers in the management and decision-making of three schools in the Kavango region of Namibia: a case study
- Authors: Muronga, Michael Muduva
- Date: 2012
- Subjects: Educational leadership -- Namibia -- Kavango School management and organization -- Namibia -- Kavango Teachers -- Namibia -- Kavango Teacher participation in administration -- Namibia -- Kavango Teachers -- Training of -- Namibia -- Kavango
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1688 , http://hdl.handle.net/10962/d1003571
- Description: The purpose of the research was to investigate stakeholders’ perceptions and experiences of teachers’ participation in school management and decision-making. Teachers’ involvement is a contested issue in schools. The goal was to find out to what extent and in what way teachers participate in school issues, as well as gain insight and understanding on the effects of participation of teachers in schools and how principals enhance democratic practice for quality education. The research was a case study conducted within the interpretive qualitative paradigm. I used document analysis, semi-structured interviews and observation to collect data for validity purposes and to counter subjectivity. The findings revealed at least a significant progress in terms of the Education Act, no 16 of 2001 requirement, of teachers’ participation in management and decision-making in schools, which has been an issue in the past. The study revealed that decisions are taken after consultation through consensus. The study revealed that the participation approach promotes ownership and commitment of staff to higher performance and common goals. The findings emerged that participative management has advantages for achieving higher performance through collaboration, consultation, and broader participation. The foremost findings include school principals’ roles in enhancing a collegial management approach by delegating, sharing leadership and responsibilities, and establishing organisation structures and committees involving teachers. Meetings serve as a platform for communication and sharing of information with stakeholders. However, there were also signs of tensions amid school management teams (SMTs) and teachers on participation in school matters in all aspects. Furthermore, its time-consuming nature, authoritarianism and accountability emerged as major challenges affecting the implementation of the participative approach. In addition to that, the study revealed that lack of knowledge and skills, unwillingness to involve others and to participate affects the implementation of the theory. As a result, the study recommends to the policies makers and the Ministry of Education to organize training for all stakeholders on participative management to empower them. Moreover, the study recommends to regional managers, inspectors, and advisory teachers (AT) to provide information to institutions responsible for teacher training to accommodate the theory into their curriculum. School principals should undergo training programmes or in-service training for participative leadership purposes to enhance their leadership capacity and to carry out their responsibilities effectively.
- Full Text:
- Date Issued: 2012
- Authors: Muronga, Michael Muduva
- Date: 2012
- Subjects: Educational leadership -- Namibia -- Kavango School management and organization -- Namibia -- Kavango Teachers -- Namibia -- Kavango Teacher participation in administration -- Namibia -- Kavango Teachers -- Training of -- Namibia -- Kavango
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1688 , http://hdl.handle.net/10962/d1003571
- Description: The purpose of the research was to investigate stakeholders’ perceptions and experiences of teachers’ participation in school management and decision-making. Teachers’ involvement is a contested issue in schools. The goal was to find out to what extent and in what way teachers participate in school issues, as well as gain insight and understanding on the effects of participation of teachers in schools and how principals enhance democratic practice for quality education. The research was a case study conducted within the interpretive qualitative paradigm. I used document analysis, semi-structured interviews and observation to collect data for validity purposes and to counter subjectivity. The findings revealed at least a significant progress in terms of the Education Act, no 16 of 2001 requirement, of teachers’ participation in management and decision-making in schools, which has been an issue in the past. The study revealed that decisions are taken after consultation through consensus. The study revealed that the participation approach promotes ownership and commitment of staff to higher performance and common goals. The findings emerged that participative management has advantages for achieving higher performance through collaboration, consultation, and broader participation. The foremost findings include school principals’ roles in enhancing a collegial management approach by delegating, sharing leadership and responsibilities, and establishing organisation structures and committees involving teachers. Meetings serve as a platform for communication and sharing of information with stakeholders. However, there were also signs of tensions amid school management teams (SMTs) and teachers on participation in school matters in all aspects. Furthermore, its time-consuming nature, authoritarianism and accountability emerged as major challenges affecting the implementation of the participative approach. In addition to that, the study revealed that lack of knowledge and skills, unwillingness to involve others and to participate affects the implementation of the theory. As a result, the study recommends to the policies makers and the Ministry of Education to organize training for all stakeholders on participative management to empower them. Moreover, the study recommends to regional managers, inspectors, and advisory teachers (AT) to provide information to institutions responsible for teacher training to accommodate the theory into their curriculum. School principals should undergo training programmes or in-service training for participative leadership purposes to enhance their leadership capacity and to carry out their responsibilities effectively.
- Full Text:
- Date Issued: 2012
Ethics and values of informal businesses in the Nelson Mandela Bay area
- Authors: Gaxamba, Thandekile
- Date: 2012
- Subjects: Business ethics -- South Africa -- Nelson Mandela Bay Municipality , Informal sector (Economics) -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8890 , http://hdl.handle.net/10948/d1020824
- Description: The Nelson Mandela Bay area will be used to investigate the ethical and moral considerations faced by the informal sector. It is generally believed that informal sector businesses are characterised by high levels of unethical behaviour. The informal economy in many developing and under developed countries is large in terms of contribution to GDP and number of participants. The informal economy is largely composed of very small businesses that are not registered. They are not operating from suitable premises but run from homes, street pavements and other informal arrangements. In developing countries, self-employment has a greater share of informal employment than wage employment. It represents 70 percent of informal employment in Sub-Saharan Africa (if South Africa is excluded, the share is 81 percent), 62 percent in North Africa, 60 percent in Latin America and 59 percent in Asia. Consequently, informal wage employment in the developing world constitutes 40 percent of the informal employment outside of agriculture (Becker, 2004). The informal economy is as high as 56 percent of GDP in countries such as Georgia, Zimbabwe and Bolivia, where as it represents about 8 to 12 percent of economic activity in advanced or developed economies (Becker, 2004). In South Africa, informal businesses provide a viable alternative for many who are unable to find jobs in the formal sector of the economy.
- Full Text:
- Date Issued: 2012
- Authors: Gaxamba, Thandekile
- Date: 2012
- Subjects: Business ethics -- South Africa -- Nelson Mandela Bay Municipality , Informal sector (Economics) -- South Africa -- Nelson Mandela Bay Municipality
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8890 , http://hdl.handle.net/10948/d1020824
- Description: The Nelson Mandela Bay area will be used to investigate the ethical and moral considerations faced by the informal sector. It is generally believed that informal sector businesses are characterised by high levels of unethical behaviour. The informal economy in many developing and under developed countries is large in terms of contribution to GDP and number of participants. The informal economy is largely composed of very small businesses that are not registered. They are not operating from suitable premises but run from homes, street pavements and other informal arrangements. In developing countries, self-employment has a greater share of informal employment than wage employment. It represents 70 percent of informal employment in Sub-Saharan Africa (if South Africa is excluded, the share is 81 percent), 62 percent in North Africa, 60 percent in Latin America and 59 percent in Asia. Consequently, informal wage employment in the developing world constitutes 40 percent of the informal employment outside of agriculture (Becker, 2004). The informal economy is as high as 56 percent of GDP in countries such as Georgia, Zimbabwe and Bolivia, where as it represents about 8 to 12 percent of economic activity in advanced or developed economies (Becker, 2004). In South Africa, informal businesses provide a viable alternative for many who are unable to find jobs in the formal sector of the economy.
- Full Text:
- Date Issued: 2012
An investigation of local economic development and income security in the Eastern Cape : the case of Amathole District Municipality
- Authors: Satyi, Nosisi Kaya
- Date: 2012
- Subjects: Economic assistance -- South Africa -- East London , Economic development -- South Africa -- East London , Economic security -- South Africa -- East London , Sustainable development -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9175 , http://hdl.handle.net/10948/d1020130
- Description: The aim of this study was to investigate the impact of the Local Economic Development Projects (LED) in relation to Income Security. It can be argued that LED is one intervention, which can be used to create jobs and eradicate poverty at a given locality. LED has been regarded as an approach towards economic development and growth whereby local people are encouraged to work in collaboration in order to achieve sustainable economic growth, bringing economic benefits and improved quality of life for all community members in in a specific municipal area.
- Full Text:
- Date Issued: 2012
- Authors: Satyi, Nosisi Kaya
- Date: 2012
- Subjects: Economic assistance -- South Africa -- East London , Economic development -- South Africa -- East London , Economic security -- South Africa -- East London , Sustainable development -- South Africa -- East London
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9175 , http://hdl.handle.net/10948/d1020130
- Description: The aim of this study was to investigate the impact of the Local Economic Development Projects (LED) in relation to Income Security. It can be argued that LED is one intervention, which can be used to create jobs and eradicate poverty at a given locality. LED has been regarded as an approach towards economic development and growth whereby local people are encouraged to work in collaboration in order to achieve sustainable economic growth, bringing economic benefits and improved quality of life for all community members in in a specific municipal area.
- Full Text:
- Date Issued: 2012
What girls could and should become: an analysis of how the print media portray career opportunities for young women
- Authors: Matomela, Nwabisa Dineo
- Date: 2012
- Subjects: Stereotypes (Social psychology) -- South Africa -- Nelson Mandela Bay Municipacility , Young women -- Press coverage , Young women -- Vocational guidance
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8419 , http://hdl.handle.net/10948/d1014076
- Description: This treatise investigates the representation of career opportunities for young girls as portrayed in three English-medium newspapers published in the Nelson Mandela Bay in 2010.While there have been numerous researches on the representation of women in the media, studies on career opportunities for young girls have yet to be conducted. Previous studies have established that girls were socialized to occupy nurturing roles in society: through parents, schools and social institutions like churches were chief socialization instruments. The use of language and rhetoric in the media often reiterates this socialization. Due to the power of the media to influence perceptions, this research reflects on the messages obtained by readers of the publications. The research is important because it aims to identify the trends of representation of career and life opportunities for girls in: The Herald, the Weekend Post and La Femme newspapers. A pilot study of articles on women and young girls was completed; this was followed by a main study. A content analysis of articles only on women and girls was conducted; whilst articles on young boys and men were excluded from this research, as its main focus was on women. The theoretical frameworks applied were the theories of journalism and feminism to determine the nature of representation. While the media organisations operate solely as a business, whose interest is to make profit, they have the fundamental responsibility of promoting values, particularly in South Africa. Under the leadership of the ANC-led government, plans have been executed to promote a 50/50 representation in government. Also, the participation of women in the private sector has improved through the requirements of the policy of Black Economic Empowerment, which aims to redress the wrongs of the past. This project has established that although the world has embraced feminism and the equality of women and men, much still needs to be done to reinforce these ideals, especially in the socialization of children.
- Full Text:
- Date Issued: 2012
- Authors: Matomela, Nwabisa Dineo
- Date: 2012
- Subjects: Stereotypes (Social psychology) -- South Africa -- Nelson Mandela Bay Municipacility , Young women -- Press coverage , Young women -- Vocational guidance
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8419 , http://hdl.handle.net/10948/d1014076
- Description: This treatise investigates the representation of career opportunities for young girls as portrayed in three English-medium newspapers published in the Nelson Mandela Bay in 2010.While there have been numerous researches on the representation of women in the media, studies on career opportunities for young girls have yet to be conducted. Previous studies have established that girls were socialized to occupy nurturing roles in society: through parents, schools and social institutions like churches were chief socialization instruments. The use of language and rhetoric in the media often reiterates this socialization. Due to the power of the media to influence perceptions, this research reflects on the messages obtained by readers of the publications. The research is important because it aims to identify the trends of representation of career and life opportunities for girls in: The Herald, the Weekend Post and La Femme newspapers. A pilot study of articles on women and young girls was completed; this was followed by a main study. A content analysis of articles only on women and girls was conducted; whilst articles on young boys and men were excluded from this research, as its main focus was on women. The theoretical frameworks applied were the theories of journalism and feminism to determine the nature of representation. While the media organisations operate solely as a business, whose interest is to make profit, they have the fundamental responsibility of promoting values, particularly in South Africa. Under the leadership of the ANC-led government, plans have been executed to promote a 50/50 representation in government. Also, the participation of women in the private sector has improved through the requirements of the policy of Black Economic Empowerment, which aims to redress the wrongs of the past. This project has established that although the world has embraced feminism and the equality of women and men, much still needs to be done to reinforce these ideals, especially in the socialization of children.
- Full Text:
- Date Issued: 2012
An assessment of service delivery challenges: Intsika Yethu Municipality
- Authors: Shasha, Zamuxolo
- Date: 2012
- Subjects: Government productivity -- South Africa -- Eastern Cape -- Evaluation , Municipal services -- South Africa -- Eastern Cape , Water-supply
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8272 , http://hdl.handle.net/10948/d1015965
- Description: This study assesses service delivery challenges in Intsika Yethu Municipality with reference to water and electricity. This report presents the findings of a study conducted to identify the service delivery challenges related to the provision of basic services such as water and electricity, together with the recommendations on how these challenges can be resolved. This study was prompted by the huge number of backlogs experienced regarding water and electricity as well as complaints of non-service delivery and little understanding of the programme and plans within Intsika Yethu Municipality. The results of this study show that the communities do not fully participate in their development planning processes and they do not understand the purpose and existence of IDP document. The researcher hopes that this study will sensitise the community to participate in the affairs of their development that will change the quality of their lives. Intsika Yethu Municipality should improve their strategies and consultation structures in the implementation of water and electricity projects as well as the IDP processes.
- Full Text:
- Date Issued: 2012
- Authors: Shasha, Zamuxolo
- Date: 2012
- Subjects: Government productivity -- South Africa -- Eastern Cape -- Evaluation , Municipal services -- South Africa -- Eastern Cape , Water-supply
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:8272 , http://hdl.handle.net/10948/d1015965
- Description: This study assesses service delivery challenges in Intsika Yethu Municipality with reference to water and electricity. This report presents the findings of a study conducted to identify the service delivery challenges related to the provision of basic services such as water and electricity, together with the recommendations on how these challenges can be resolved. This study was prompted by the huge number of backlogs experienced regarding water and electricity as well as complaints of non-service delivery and little understanding of the programme and plans within Intsika Yethu Municipality. The results of this study show that the communities do not fully participate in their development planning processes and they do not understand the purpose and existence of IDP document. The researcher hopes that this study will sensitise the community to participate in the affairs of their development that will change the quality of their lives. Intsika Yethu Municipality should improve their strategies and consultation structures in the implementation of water and electricity projects as well as the IDP processes.
- Full Text:
- Date Issued: 2012
The effectiveness of internal newsletters: case study of Transnet Freight Rail's platform
- Matshoba, Thembekile Phillinah
- Authors: Matshoba, Thembekile Phillinah
- Date: 2012
- Subjects: Newsletters , Business communication
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8420 , http://hdl.handle.net/10948/d1015672
- Description: The research is based on a case study of an internal newsletter, Platform. The objective was to obtain more information about Transnet Freight Rail employees‘ thoughts on its effectiveness and the effectiveness of internal newsletters by using Platform as an example. The treatise explored the perceptions of employees and Transnet in terms of the effectiveness of the internal newsletter as a communication tool as well as their attitudes towards the newsletter as an information disseminating medium. A mixed methods approach was used for analysis in this study. The first methodological paradigm took an interpretivist approach, focusing primarily on analysing the content of the newsletter. The second methodological design was based on the positivistic theory approach and utilised a survey by questionnaire. One hundred and twenty (120) questionnaires were issued to Transnet Freight Rail employees representing the three regions: Central Region, Eastern Region & Western Region and the Head Office of which 120 (100 percent) were received back by the deadline. Of these respondents 56 (46,66 percent) said that they find Platform very relevant as an internal newsletter. A further finding was that 68,33 percent of the respondents said Platform should stay as it is. About 58,33 percent of the respondents took 30 minutes to an hour to read the newsletter with ratings of 72,5 percent interested in communication from management, 65 percent in financial performance, 60 percent in news about people and 59,16 percent in departmental information. The main types of information required are about updates on business performance and safety news. The content of six editions of the newsletter was analysed. The newsletter editions used were from the latest one published counting backwards. The content of the newsletter varies in each edition and depends on the theme. There are similar themes that come up with every edition such as safety. The style of writing used is simple to ensure maximum understanding.
- Full Text:
- Date Issued: 2012
- Authors: Matshoba, Thembekile Phillinah
- Date: 2012
- Subjects: Newsletters , Business communication
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:8420 , http://hdl.handle.net/10948/d1015672
- Description: The research is based on a case study of an internal newsletter, Platform. The objective was to obtain more information about Transnet Freight Rail employees‘ thoughts on its effectiveness and the effectiveness of internal newsletters by using Platform as an example. The treatise explored the perceptions of employees and Transnet in terms of the effectiveness of the internal newsletter as a communication tool as well as their attitudes towards the newsletter as an information disseminating medium. A mixed methods approach was used for analysis in this study. The first methodological paradigm took an interpretivist approach, focusing primarily on analysing the content of the newsletter. The second methodological design was based on the positivistic theory approach and utilised a survey by questionnaire. One hundred and twenty (120) questionnaires were issued to Transnet Freight Rail employees representing the three regions: Central Region, Eastern Region & Western Region and the Head Office of which 120 (100 percent) were received back by the deadline. Of these respondents 56 (46,66 percent) said that they find Platform very relevant as an internal newsletter. A further finding was that 68,33 percent of the respondents said Platform should stay as it is. About 58,33 percent of the respondents took 30 minutes to an hour to read the newsletter with ratings of 72,5 percent interested in communication from management, 65 percent in financial performance, 60 percent in news about people and 59,16 percent in departmental information. The main types of information required are about updates on business performance and safety news. The content of six editions of the newsletter was analysed. The newsletter editions used were from the latest one published counting backwards. The content of the newsletter varies in each edition and depends on the theme. There are similar themes that come up with every edition such as safety. The style of writing used is simple to ensure maximum understanding.
- Full Text:
- Date Issued: 2012
Effect of stage of lactation on milk yield, somatic cell counts, mineral and fatty acid profiles in pasture-based Friesian, Jersey and Friesian × Jersey cows
- Nantapo, Carlos Wyson Tawanda
- Authors: Nantapo, Carlos Wyson Tawanda
- Date: 2012
- Subjects: Trace elements in animal nutrition , Genotype-environment interaction , Milk yield -- Testing , Lactation , Holstein-Friesian cattle , Jersey cattle
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11819 , http://hdl.handle.net/10353/d1006810 , Trace elements in animal nutrition , Genotype-environment interaction , Milk yield -- Testing , Lactation , Holstein-Friesian cattle , Jersey cattle
- Description: The effect of stage of lactation on milk yield, somatic cell counts, mineral and fatty acid profiles in pasture-based Friesian, Jersey and Friesian × Jersey cows was investigated. Twenty Friesian, twenty Jersey and twenty Friesian × Jersey cows were randomly selected from a dairy herd. A total of 202 milk samples were collected and analysed in three stages of lactation. Genotypic differences were observed in milk yield and fat content. Friesian cows produced the highest yield and lowest fat content whereas the opposite was true for Jersey cows (P<0.01). No significant differences were observed in SCC in the different genotypes, but SCC levels were higher in mid and late lactation (P<0.001). There was no effect (P<0.005) of genotype and stage of lactation interaction on Ca, P, Mg, Na, Mn and Bo concentration. Jersey cows had the least concentration of Fe and Cu in all stages of lactation. Strong positive correlations were observed among Ca and P, Mg and Zn. Aluminium had a strong positive relationship with Bo, Fe, Mn and Zn (P<0.001). Generally, SCC had a weak positive relationship with macro elements but a significant negative relationship with microelements. Yield levels were negatively correlated with Mg, Na, Al, Mn and SCC. Pasture ALA, SFA, n-3, n-6/n-3 and PUFA/MUFA concentration did not differ across the study period. Linoleic acid was highest in the second phase which coincides with mid lactation in cows (P<0.001). Highest moisture content coincided with the least fat free dry matter content in early lactation (P<0.001). Significantly high fat content was observed in late lactation than in early lactation. Highest butyric, caproic, linoleic, n-6 and PUFA were observed for Friesian cows. All other fatty acids ratios were not significantly different among different genotypes. Highest CLA, ALA, LA, SFA, PUFA, n-6, and n-3 and atherogenicity index were observed in early lactation whereas desaturase activity indices were highest in late lactation. Strong positive correlations were observed among milk vaccenic, ALA, LA and CLA concentrations. Inverse relationships were observed between SFA and long chain fatty acids. It can be concluded, it may be of advantage to consume milk from early stage of lactation poses a lower risk to coronary diseases and are much safer to consume.
- Full Text:
- Date Issued: 2012
- Authors: Nantapo, Carlos Wyson Tawanda
- Date: 2012
- Subjects: Trace elements in animal nutrition , Genotype-environment interaction , Milk yield -- Testing , Lactation , Holstein-Friesian cattle , Jersey cattle
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11819 , http://hdl.handle.net/10353/d1006810 , Trace elements in animal nutrition , Genotype-environment interaction , Milk yield -- Testing , Lactation , Holstein-Friesian cattle , Jersey cattle
- Description: The effect of stage of lactation on milk yield, somatic cell counts, mineral and fatty acid profiles in pasture-based Friesian, Jersey and Friesian × Jersey cows was investigated. Twenty Friesian, twenty Jersey and twenty Friesian × Jersey cows were randomly selected from a dairy herd. A total of 202 milk samples were collected and analysed in three stages of lactation. Genotypic differences were observed in milk yield and fat content. Friesian cows produced the highest yield and lowest fat content whereas the opposite was true for Jersey cows (P<0.01). No significant differences were observed in SCC in the different genotypes, but SCC levels were higher in mid and late lactation (P<0.001). There was no effect (P<0.005) of genotype and stage of lactation interaction on Ca, P, Mg, Na, Mn and Bo concentration. Jersey cows had the least concentration of Fe and Cu in all stages of lactation. Strong positive correlations were observed among Ca and P, Mg and Zn. Aluminium had a strong positive relationship with Bo, Fe, Mn and Zn (P<0.001). Generally, SCC had a weak positive relationship with macro elements but a significant negative relationship with microelements. Yield levels were negatively correlated with Mg, Na, Al, Mn and SCC. Pasture ALA, SFA, n-3, n-6/n-3 and PUFA/MUFA concentration did not differ across the study period. Linoleic acid was highest in the second phase which coincides with mid lactation in cows (P<0.001). Highest moisture content coincided with the least fat free dry matter content in early lactation (P<0.001). Significantly high fat content was observed in late lactation than in early lactation. Highest butyric, caproic, linoleic, n-6 and PUFA were observed for Friesian cows. All other fatty acids ratios were not significantly different among different genotypes. Highest CLA, ALA, LA, SFA, PUFA, n-6, and n-3 and atherogenicity index were observed in early lactation whereas desaturase activity indices were highest in late lactation. Strong positive correlations were observed among milk vaccenic, ALA, LA and CLA concentrations. Inverse relationships were observed between SFA and long chain fatty acids. It can be concluded, it may be of advantage to consume milk from early stage of lactation poses a lower risk to coronary diseases and are much safer to consume.
- Full Text:
- Date Issued: 2012
Web-based visualisation techniques for reporting zoonotic outbreaks
- Authors: Ncube, Sinini Paul
- Date: 2012
- Subjects: Zoonoses -- Reporting , Communicable diseases -- Reporting , Communication in medicine , Medical telematics , Internet , Information visualization
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4664 , http://hdl.handle.net/10962/d1006672 , Zoonoses -- Reporting , Communicable diseases -- Reporting , Communication in medicine , Medical telematics , Internet , Information visualization
- Description: Zoonotic diseases are diseases that are transmitted from animals or vectors to humans and vice versa. The public together with veterinarian authorities should readily access disease information as it is vital in rapidly controlling resultant zoonotic outbreak threats through improved awareness. Currently, the reporting of disease information in South Africa is predominantly limited to traditional methods of Information Communication Technologies (ICTs) like faxes, monthly newspaper reports, radios, phones and televisions. Although these are effective ways of communication, their disadvantage is that the information that most of them offer can only be accessed at specific times during a crisis. New technologies like the internet have become the most efficient way of distributing information in near-real-time. Many developed countries have used web-based reporting platforms to deliver timely information through temporal and geographic visualisation techniques. There has been an attempt in the use of web-based reporting in South Africa but most of these sites are characterised by heavy text which makes them time consuming to use or maintain. As a result most sites have not been updated or have ceased to exist because of the work load involved. The success of web reporting mechanisms in developed countries offers evidence that web-based reporting systems when appropriately visualised can improve the easy understanding of information and efficiency in the analysis of that data. In this thesis, a web-based reporting prototype was proposed after gathering information from different sources: literature related to disease reporting and the visualisation of infectious diseases; the exploration of the currently deployed web systems; and the investigation of user requirements from relevant parties. The proposed prototype system was then developed using Adobe Flash tools, Java and MySQL languages. A focus group then reviewed the developed system to ascertain that the relevant requirements had been incorporated and to obtain additional ideas about the system. This led to the proposal of a new prototype system that can be used by the authorities concerned as a plan to develop a fully functional disease reporting system for South Africa.
- Full Text:
- Date Issued: 2012
- Authors: Ncube, Sinini Paul
- Date: 2012
- Subjects: Zoonoses -- Reporting , Communicable diseases -- Reporting , Communication in medicine , Medical telematics , Internet , Information visualization
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4664 , http://hdl.handle.net/10962/d1006672 , Zoonoses -- Reporting , Communicable diseases -- Reporting , Communication in medicine , Medical telematics , Internet , Information visualization
- Description: Zoonotic diseases are diseases that are transmitted from animals or vectors to humans and vice versa. The public together with veterinarian authorities should readily access disease information as it is vital in rapidly controlling resultant zoonotic outbreak threats through improved awareness. Currently, the reporting of disease information in South Africa is predominantly limited to traditional methods of Information Communication Technologies (ICTs) like faxes, monthly newspaper reports, radios, phones and televisions. Although these are effective ways of communication, their disadvantage is that the information that most of them offer can only be accessed at specific times during a crisis. New technologies like the internet have become the most efficient way of distributing information in near-real-time. Many developed countries have used web-based reporting platforms to deliver timely information through temporal and geographic visualisation techniques. There has been an attempt in the use of web-based reporting in South Africa but most of these sites are characterised by heavy text which makes them time consuming to use or maintain. As a result most sites have not been updated or have ceased to exist because of the work load involved. The success of web reporting mechanisms in developed countries offers evidence that web-based reporting systems when appropriately visualised can improve the easy understanding of information and efficiency in the analysis of that data. In this thesis, a web-based reporting prototype was proposed after gathering information from different sources: literature related to disease reporting and the visualisation of infectious diseases; the exploration of the currently deployed web systems; and the investigation of user requirements from relevant parties. The proposed prototype system was then developed using Adobe Flash tools, Java and MySQL languages. A focus group then reviewed the developed system to ascertain that the relevant requirements had been incorporated and to obtain additional ideas about the system. This led to the proposal of a new prototype system that can be used by the authorities concerned as a plan to develop a fully functional disease reporting system for South Africa.
- Full Text:
- Date Issued: 2012