The development of best practice guidelines that will assist small businesses planning
- Authors: Kemp, John Morne
- Date: 2009
- Subjects: Small business-- Finance , New business enterprises -- Finance , New business enterprises -- Planning , Business planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8799 , http://hdl.handle.net/10948/d1016153
- Description: The research problem addressed in this study was to provide a planning guideline for Small, Medium and Micro Enterprises (SMME’s) to assist them to plan more effectively and be sustainable in their businesses. A guideline for planning is needed, as planning is one of the most difficult activities a business owner needs to undertake. Yet it is essential to do because, before taking action, you must know where you are going and how to get there. Well-developed plans can assist the business owner to interest banks and/or investors to invest in the business, guide the owner in operating the business, give direction to and motivate employees, and provide an environment to attract customers and prospective employees. To become an effective business owner, one must look ahead. Planning, which is the process of setting objectives and devising actions to achieve those objectives are imperative to be sustainable in business. The findings of the literature survey clearly highlights the reasons why a business owner needs to plan and provide a guideline how to plan. It was found in the empirical study that Standard Bank rate the SMME market as a very valuable part of their business. The SMME market has a benefit to various departments within the bank, not only the SMME business market. The empirical study also found that not every entrepreneur that holds a business plan is successful. Many reasons for this exist. One aspect that was identified, is that the wrong idea was implemented. The empirical study revealed that in all respondents agreed that planning forms an integral part of the entrepreneurs business. The empirical study found that a business plan will assist the entrepreneur to be sustainable in their business, only if a thorough feasibility study was conducted. The respondents agreed that the feasibility study, will either support or contradict the assumptions made in the business plan, this will assist the entrepreneur to decide to either continue or end the business activity. It was found that the entrepreneur, with especially a financial expert should be involved when a business planning is undertaken. Other experts in the various business arenas should also be requested to assist with the setting up of the business plan.
- Full Text:
- Date Issued: 2009
- Authors: Kemp, John Morne
- Date: 2009
- Subjects: Small business-- Finance , New business enterprises -- Finance , New business enterprises -- Planning , Business planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8799 , http://hdl.handle.net/10948/d1016153
- Description: The research problem addressed in this study was to provide a planning guideline for Small, Medium and Micro Enterprises (SMME’s) to assist them to plan more effectively and be sustainable in their businesses. A guideline for planning is needed, as planning is one of the most difficult activities a business owner needs to undertake. Yet it is essential to do because, before taking action, you must know where you are going and how to get there. Well-developed plans can assist the business owner to interest banks and/or investors to invest in the business, guide the owner in operating the business, give direction to and motivate employees, and provide an environment to attract customers and prospective employees. To become an effective business owner, one must look ahead. Planning, which is the process of setting objectives and devising actions to achieve those objectives are imperative to be sustainable in business. The findings of the literature survey clearly highlights the reasons why a business owner needs to plan and provide a guideline how to plan. It was found in the empirical study that Standard Bank rate the SMME market as a very valuable part of their business. The SMME market has a benefit to various departments within the bank, not only the SMME business market. The empirical study also found that not every entrepreneur that holds a business plan is successful. Many reasons for this exist. One aspect that was identified, is that the wrong idea was implemented. The empirical study revealed that in all respondents agreed that planning forms an integral part of the entrepreneurs business. The empirical study found that a business plan will assist the entrepreneur to be sustainable in their business, only if a thorough feasibility study was conducted. The respondents agreed that the feasibility study, will either support or contradict the assumptions made in the business plan, this will assist the entrepreneur to decide to either continue or end the business activity. It was found that the entrepreneur, with especially a financial expert should be involved when a business planning is undertaken. Other experts in the various business arenas should also be requested to assist with the setting up of the business plan.
- Full Text:
- Date Issued: 2009
The development of sustainability criteria to facilitate the selection of sanitation technologies within the Buffalo City Municipality (Eastern Cape Province, South Africa)
- Authors: Hoossein, Shafick
- Date: 2009
- Subjects: Sanitation -- South Africa -- Buffalo City Sustainable development -- South Africa -- Buffalo City Water -- Purification -- South Africa -- Buffalo City Sewage disposal -- South Africa -- Buffalo City Water quality -- South Africa -- Buffalo City Environmental health -- South Africa -- Buffalo City Environmental management -- South Africa -- Buffalo City
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:32275 , http://hdl.handle.net/10962/d1004595
- Description: Two and a half billion people mostly in sub-Saharan Africa and southern Asia remain without improved sanitation facilities despite the Millennium Development Goal 7's target to halve this number by 2015. While it might be tempting for developing countries such as South Africa to implement the cheapest and most rapidly constructed sanitation services simply to meet the desired target, this could have significant negative implications on human health and the environment over the long-term. As a result, there is a need to ensure that the most appropriate sustainable sanitation technologies are selected during the planning stage. The purpose of this research was therefore to document the development and pilot application of a flexible context-specific decision-support tool for sustainable sanitation technology selection within Buffalo City Municipality (BCM) in the Eastern Cape Province of South Africa. The first step in the development process was to ascertain the current status of sanitation within the municipality, with a specific focus on the main challenges related to the provision, maintenance and performance of these technologies. Thereafter, a participatory approach was employed involving BCM stakeholders to develop a series of sustainability criteria and indicators that took into consideration economic, social, environmental and technical concerns as well as legal requirements. The development process resulted in a list of 38 BCM sustainable sanitation selection criteria that were applied in a pilot study involving rural, urban and peri-urban communities within BCM. Certain criteria related to topographical features and the availability of piped water and land were considered useful for 'coarse screening' while others were applied during 'fine screening'. In order to enhance the context specificity of criteria, each was weighted, through consultation with key BCM stakeholders. This research confirmed that the sanitation situation in BCM was poor and preliminary evidence indicated that sanitation systems were negatively impacting on the quality of water resources within BCM justifying the need for a sustainable sanitation decision support tool. Based on the pilot application of the BCM Sustainability Selection Criteria List, the urine diversion technology was considered the most sustainable technology option in each study site. There were however, certain social criteria that received relatively low sustainability scores and these would need to be addressed prior to the approval of this technology for implementation. The approach adopted in this thesis was considered highly context-specific yet flexible and appropriate for adoption not only by BCM but other municipalities on a range of spatial scales.
- Full Text:
- Date Issued: 2009
- Authors: Hoossein, Shafick
- Date: 2009
- Subjects: Sanitation -- South Africa -- Buffalo City Sustainable development -- South Africa -- Buffalo City Water -- Purification -- South Africa -- Buffalo City Sewage disposal -- South Africa -- Buffalo City Water quality -- South Africa -- Buffalo City Environmental health -- South Africa -- Buffalo City Environmental management -- South Africa -- Buffalo City
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:32275 , http://hdl.handle.net/10962/d1004595
- Description: Two and a half billion people mostly in sub-Saharan Africa and southern Asia remain without improved sanitation facilities despite the Millennium Development Goal 7's target to halve this number by 2015. While it might be tempting for developing countries such as South Africa to implement the cheapest and most rapidly constructed sanitation services simply to meet the desired target, this could have significant negative implications on human health and the environment over the long-term. As a result, there is a need to ensure that the most appropriate sustainable sanitation technologies are selected during the planning stage. The purpose of this research was therefore to document the development and pilot application of a flexible context-specific decision-support tool for sustainable sanitation technology selection within Buffalo City Municipality (BCM) in the Eastern Cape Province of South Africa. The first step in the development process was to ascertain the current status of sanitation within the municipality, with a specific focus on the main challenges related to the provision, maintenance and performance of these technologies. Thereafter, a participatory approach was employed involving BCM stakeholders to develop a series of sustainability criteria and indicators that took into consideration economic, social, environmental and technical concerns as well as legal requirements. The development process resulted in a list of 38 BCM sustainable sanitation selection criteria that were applied in a pilot study involving rural, urban and peri-urban communities within BCM. Certain criteria related to topographical features and the availability of piped water and land were considered useful for 'coarse screening' while others were applied during 'fine screening'. In order to enhance the context specificity of criteria, each was weighted, through consultation with key BCM stakeholders. This research confirmed that the sanitation situation in BCM was poor and preliminary evidence indicated that sanitation systems were negatively impacting on the quality of water resources within BCM justifying the need for a sustainable sanitation decision support tool. Based on the pilot application of the BCM Sustainability Selection Criteria List, the urine diversion technology was considered the most sustainable technology option in each study site. There were however, certain social criteria that received relatively low sustainability scores and these would need to be addressed prior to the approval of this technology for implementation. The approach adopted in this thesis was considered highly context-specific yet flexible and appropriate for adoption not only by BCM but other municipalities on a range of spatial scales.
- Full Text:
- Date Issued: 2009
The development of the stock market and its effect on economic growth: the case of SADC
- Authors: Elliott, Kevin Andrew
- Date: 2009
- Subjects: Stocks -- Africa, Southern , Stock exchanges -- Africa, Southern , Economic development -- Africa, Southern , Stocks -- Economic aspects -- Africa, Southern
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:967 , http://hdl.handle.net/10962/d1002701 , Stocks -- Africa, Southern , Stock exchanges -- Africa, Southern , Economic development -- Africa, Southern , Stocks -- Economic aspects -- Africa, Southern
- Description: Using a pooled panel data set from nine developing countries within the SADC region from 1992 to 2004, this paper empirically examines; firstly, the relationship between stock market development and long-term economic growth, and secondly, the macroeconomic determinants of stock market development, particularly market capitalisation as a percentage of GDP. The results suggest that there is a strong link between stock market development and economic growth, particularly through the liquidity provided by the market. The evidence obtained lends support to the view that a well-developed and functioning stock market can boost economic growth by enhancing faster capital accumulation and allowing for better resource allocation, particularly in developing countries. In terms of the macroeconomic determinants of stock market development, the results support those of Garcia and Liu (1999), in that we found the indicators of financial intermediary development, the value of shares traded as a percentage of GDP and the macroeconomic instability variable to be important determinants of stock market development.
- Full Text:
- Date Issued: 2009
- Authors: Elliott, Kevin Andrew
- Date: 2009
- Subjects: Stocks -- Africa, Southern , Stock exchanges -- Africa, Southern , Economic development -- Africa, Southern , Stocks -- Economic aspects -- Africa, Southern
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:967 , http://hdl.handle.net/10962/d1002701 , Stocks -- Africa, Southern , Stock exchanges -- Africa, Southern , Economic development -- Africa, Southern , Stocks -- Economic aspects -- Africa, Southern
- Description: Using a pooled panel data set from nine developing countries within the SADC region from 1992 to 2004, this paper empirically examines; firstly, the relationship between stock market development and long-term economic growth, and secondly, the macroeconomic determinants of stock market development, particularly market capitalisation as a percentage of GDP. The results suggest that there is a strong link between stock market development and economic growth, particularly through the liquidity provided by the market. The evidence obtained lends support to the view that a well-developed and functioning stock market can boost economic growth by enhancing faster capital accumulation and allowing for better resource allocation, particularly in developing countries. In terms of the macroeconomic determinants of stock market development, the results support those of Garcia and Liu (1999), in that we found the indicators of financial intermediary development, the value of shares traded as a percentage of GDP and the macroeconomic instability variable to be important determinants of stock market development.
- Full Text:
- Date Issued: 2009
The development, implementation and evaluation of a locus of control-based training programme for HIV and AIDS risk reduction among university students
- Authors: Gwandure, Calvin
- Date: 2009
- Subjects: AIDS (Disease) -- Prevention , HIV infections , Universities and colleges -- Health promotion services , Risk communication -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9838 , http://hdl.handle.net/10948/1242 , AIDS (Disease) -- Prevention , HIV infections , Universities and colleges -- Health promotion services , Risk communication -- South Africa
- Description: There is an escalation of HIV and AIDS among the youth in South Africa and other developing countries. Research on HIV and AIDS risk factors has tended to focus more on poverty, gender, race, illiteracy, and violence than personality factors that could influence an individual` s health-protective behaviour. Previous studies have also shown that wealth, education, race, and gender may not make an individual more or less vulnerable to HIV infection. This study argued that locus of control could influence an individual` s health-protective behaviour and that external locus of control could be a risk factor in HIV and AIDS risk reduction. The aim of this study was to investigate the efficacy of a locus of control-based training programme in reducing HIV and AIDS risk among university students. The locus of control-based variables that formed the training programme for HIV and AIDS risk reduction among university students were: social systems control, self-control, fatalism, achievement-oriented behaviour, deferment of gratification, personal values and expectancies, and social alienation. These locus of control-based variables were regarded as contexts in which individuals could exhibit health risk behaviours. A sample of 257 first-year university students participated in the study. There were (N = 170) female participants and (N = 87) male participants drawn from the University of the Witwatersrand. The study was a pretest-posttest repeated measures design. Data were analysed using t tests, correlations, multiple regression, structural equation modelling, and repeated measures tests. The results of this study showed significant differences in health risks between participants with an external locus of control and participants with an internal locus of control. There was a significant relationship between locus of control-based variables and HIV and AIDS risk. The locus of control-based training programme significantly modified personality and significantly reduced locus of control-based health risks and HIV and AIDS risk. Directions for future research on locus of control, health risks, and HIV and AIDS risk could focus on the development and implementation of various locus of control-based training programmes in South Africa. Locus of control should be targeted as a health risk factor in HIV and AIDS risk reduction training programmes.
- Full Text:
- Date Issued: 2009
- Authors: Gwandure, Calvin
- Date: 2009
- Subjects: AIDS (Disease) -- Prevention , HIV infections , Universities and colleges -- Health promotion services , Risk communication -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9838 , http://hdl.handle.net/10948/1242 , AIDS (Disease) -- Prevention , HIV infections , Universities and colleges -- Health promotion services , Risk communication -- South Africa
- Description: There is an escalation of HIV and AIDS among the youth in South Africa and other developing countries. Research on HIV and AIDS risk factors has tended to focus more on poverty, gender, race, illiteracy, and violence than personality factors that could influence an individual` s health-protective behaviour. Previous studies have also shown that wealth, education, race, and gender may not make an individual more or less vulnerable to HIV infection. This study argued that locus of control could influence an individual` s health-protective behaviour and that external locus of control could be a risk factor in HIV and AIDS risk reduction. The aim of this study was to investigate the efficacy of a locus of control-based training programme in reducing HIV and AIDS risk among university students. The locus of control-based variables that formed the training programme for HIV and AIDS risk reduction among university students were: social systems control, self-control, fatalism, achievement-oriented behaviour, deferment of gratification, personal values and expectancies, and social alienation. These locus of control-based variables were regarded as contexts in which individuals could exhibit health risk behaviours. A sample of 257 first-year university students participated in the study. There were (N = 170) female participants and (N = 87) male participants drawn from the University of the Witwatersrand. The study was a pretest-posttest repeated measures design. Data were analysed using t tests, correlations, multiple regression, structural equation modelling, and repeated measures tests. The results of this study showed significant differences in health risks between participants with an external locus of control and participants with an internal locus of control. There was a significant relationship between locus of control-based variables and HIV and AIDS risk. The locus of control-based training programme significantly modified personality and significantly reduced locus of control-based health risks and HIV and AIDS risk. Directions for future research on locus of control, health risks, and HIV and AIDS risk could focus on the development and implementation of various locus of control-based training programmes in South Africa. Locus of control should be targeted as a health risk factor in HIV and AIDS risk reduction training programmes.
- Full Text:
- Date Issued: 2009
The economic contribution of trout fly-fishing to the economy of the rhodes region
- Authors: Gatogang, Ballbo Patric
- Date: 2009
- Subjects: Trout fishing -- South Africa , Rainbow trout fisheries , Fishery management -- Economic aspects , Fishery management -- South Africa , Fly-fishing -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8991 , http://hdl.handle.net/10948/919 , Trout fishing -- South Africa , Rainbow trout fisheries , Fishery management -- Economic aspects , Fishery management -- South Africa , Fly-fishing -- South Africa
- Description: Approximately 24 alien fish species, equivalent to 9 percent of all South African freshwater fish species, were introduced and established into South African waters during the 19th and 20th Centuries (Skelton, 2001). Of the 24 species introduced, the Rainbow trout and the Brown trout have over time become South Africa's most widely spread and used freshwater fish species (Bainbridge, Alletson, Davies, Lax and Mills, 2005). The National Environmental Management: Biodiversity Act, no.10 of 2004 has, however, cast considerable doubt on the future of trout as a food source and a recreational fishing resource in South Africa. More specifically, Section 64 of the Act has the following aims: “(a) to prevent the unauthorized introduction and spread of alien species and invasive species to ecosystems and habitats where they do not naturally occur; (b) to manage and control alien species and invasive species to prevent or minimize harm to the environment and to biodiversity in particular; and (c) to eradicate alien species and invasive species from ecosystems and habitats where they may harm such ecosystems or habitats.” The uncertainty surrounding the future of trout in South Africa is mainly underpinned by aim (c) of Section 64 of the Act. Regarding the eradication of trout and in keeping with aim (c) of Section 64 of the Act, three remarks can be made. First, there exists a paucity of published studies which offer validated proof of the impacts which may be ascribed entirely to the introduction of alien trout in South Africa, since no pre-stocking assessments were conducted (Bainbridge et al., 2005). Second, the elimination of trout is feasible in a few limited closed ecosystems, such as small dams, but is highly impractical and untenable from an environmental and cost perspective where open and established river systems are concerned (Bainbridge et al., x 2005). More specifically, there are no efficient or adequate eradication measures which may be used in wide-ranging open ecosystems, which selectively target alien fish species. Moreover, most, if not all, measures have the potential to cause considerable adverse impacts on indigenous aquafaunal species. Finally, the elimination of trout could undermine the tourism appeal of many upper catchment areas in South Africa. The trout fishing industry is well established and is a source of local and foreign income, as well as a job creator in the South African economy (Bainbridge et al., 2005; Hlatswako, 2000; Rogerson, 2002). In particular, the industry provides a two-tier service: first, in food production at the subsistence as well as commercial levels, and second, as an angling resource. Recreational angling, including fly-fishing for trout, is one of the fastest growing tourism attractions in South Africa. Furthermore, the trout fishing industry is sustained and underpinned by a considerable infrastructure consisting of tackle manufacturers and retailers, tourist operators, professional guides, hotels, lodges and B&Bs. The economic case for the trout fishing industry in South Africa has, however, not been convincingly made. The economic benefit provided by trout and trout fly-fishing is priced directly in the market place by expenditures made by fly-fishers, and indirectly in property values, which provide access to fly-fishing opportunities. The benefit of trout and trout fly-fishing can also be valued through non-market valuation techniques. Non-market valuation is used to calculate values for items that are not traded in markets, such as environmental services. There are several non-market valuation methods available to the researcher, namely those based on revealed preference and those based on stated preference. The former includes the hedonic pricing method and the travel cost method, while the latter includes the contingent valuation method and the choice modelling method. Of the available non-market valuation techniques, the travel cost method is the most suitable method for determining the value of trout and the trout fishing industry because travel cost is often the main expenditure incurred. xi The aim of this study is threefold: first, to value the economic contribution of trout and trout fly-fishing to the Rhodes region, North Eastern Cape; second, to determine the willingness-to-pay for a project that entails the rehabilitation and maintenance of trout streams and rivers in and around Rhodes village so as to increase their trout carrying capacity by 10 percent; third, to determine the willingness-to-pay for a project aimed at eradicating trout from streams and rivers in and around Rhodes village so as to prevent trout from harming the indigenous yellowfish habitat. The first aim was achieved by applying the travel cost method, whereas the second and third aims were achieved by applying the contingent valuation method. The study aimed to provide policy makers with information regarding the value of trout fishing in the Rhodes region, so as to create an awareness of the economic trade-offs associated with alien fish eradication. Through the application of the travel cost method, the consumer surplus per trout fly-fishermen was estimated to be R19 677.69, while the total consumer surplus was estimated to be R13 774 384.40. The median willingness-to-pay for a project to rehabilitate trout habitat was estimated to be R248.95, while the total willingness-to-pay amounted to R199 462.20. The median willingness-to-pay for a project to eradicate alien trout from the Rhodes region rivers and streams was estimated to be R41.18, while the total willingness-to-pay amounted to R28 829.36. This study concludes that trout and trout fly-fishing make a valuable economic contribution to the Rhodes region. The extent of the economic benefit provided by trout and trout fly-fishing services in the Rhodes region should be carefully considered in any stream management project.
- Full Text:
- Date Issued: 2009
- Authors: Gatogang, Ballbo Patric
- Date: 2009
- Subjects: Trout fishing -- South Africa , Rainbow trout fisheries , Fishery management -- Economic aspects , Fishery management -- South Africa , Fly-fishing -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:8991 , http://hdl.handle.net/10948/919 , Trout fishing -- South Africa , Rainbow trout fisheries , Fishery management -- Economic aspects , Fishery management -- South Africa , Fly-fishing -- South Africa
- Description: Approximately 24 alien fish species, equivalent to 9 percent of all South African freshwater fish species, were introduced and established into South African waters during the 19th and 20th Centuries (Skelton, 2001). Of the 24 species introduced, the Rainbow trout and the Brown trout have over time become South Africa's most widely spread and used freshwater fish species (Bainbridge, Alletson, Davies, Lax and Mills, 2005). The National Environmental Management: Biodiversity Act, no.10 of 2004 has, however, cast considerable doubt on the future of trout as a food source and a recreational fishing resource in South Africa. More specifically, Section 64 of the Act has the following aims: “(a) to prevent the unauthorized introduction and spread of alien species and invasive species to ecosystems and habitats where they do not naturally occur; (b) to manage and control alien species and invasive species to prevent or minimize harm to the environment and to biodiversity in particular; and (c) to eradicate alien species and invasive species from ecosystems and habitats where they may harm such ecosystems or habitats.” The uncertainty surrounding the future of trout in South Africa is mainly underpinned by aim (c) of Section 64 of the Act. Regarding the eradication of trout and in keeping with aim (c) of Section 64 of the Act, three remarks can be made. First, there exists a paucity of published studies which offer validated proof of the impacts which may be ascribed entirely to the introduction of alien trout in South Africa, since no pre-stocking assessments were conducted (Bainbridge et al., 2005). Second, the elimination of trout is feasible in a few limited closed ecosystems, such as small dams, but is highly impractical and untenable from an environmental and cost perspective where open and established river systems are concerned (Bainbridge et al., x 2005). More specifically, there are no efficient or adequate eradication measures which may be used in wide-ranging open ecosystems, which selectively target alien fish species. Moreover, most, if not all, measures have the potential to cause considerable adverse impacts on indigenous aquafaunal species. Finally, the elimination of trout could undermine the tourism appeal of many upper catchment areas in South Africa. The trout fishing industry is well established and is a source of local and foreign income, as well as a job creator in the South African economy (Bainbridge et al., 2005; Hlatswako, 2000; Rogerson, 2002). In particular, the industry provides a two-tier service: first, in food production at the subsistence as well as commercial levels, and second, as an angling resource. Recreational angling, including fly-fishing for trout, is one of the fastest growing tourism attractions in South Africa. Furthermore, the trout fishing industry is sustained and underpinned by a considerable infrastructure consisting of tackle manufacturers and retailers, tourist operators, professional guides, hotels, lodges and B&Bs. The economic case for the trout fishing industry in South Africa has, however, not been convincingly made. The economic benefit provided by trout and trout fly-fishing is priced directly in the market place by expenditures made by fly-fishers, and indirectly in property values, which provide access to fly-fishing opportunities. The benefit of trout and trout fly-fishing can also be valued through non-market valuation techniques. Non-market valuation is used to calculate values for items that are not traded in markets, such as environmental services. There are several non-market valuation methods available to the researcher, namely those based on revealed preference and those based on stated preference. The former includes the hedonic pricing method and the travel cost method, while the latter includes the contingent valuation method and the choice modelling method. Of the available non-market valuation techniques, the travel cost method is the most suitable method for determining the value of trout and the trout fishing industry because travel cost is often the main expenditure incurred. xi The aim of this study is threefold: first, to value the economic contribution of trout and trout fly-fishing to the Rhodes region, North Eastern Cape; second, to determine the willingness-to-pay for a project that entails the rehabilitation and maintenance of trout streams and rivers in and around Rhodes village so as to increase their trout carrying capacity by 10 percent; third, to determine the willingness-to-pay for a project aimed at eradicating trout from streams and rivers in and around Rhodes village so as to prevent trout from harming the indigenous yellowfish habitat. The first aim was achieved by applying the travel cost method, whereas the second and third aims were achieved by applying the contingent valuation method. The study aimed to provide policy makers with information regarding the value of trout fishing in the Rhodes region, so as to create an awareness of the economic trade-offs associated with alien fish eradication. Through the application of the travel cost method, the consumer surplus per trout fly-fishermen was estimated to be R19 677.69, while the total consumer surplus was estimated to be R13 774 384.40. The median willingness-to-pay for a project to rehabilitate trout habitat was estimated to be R248.95, while the total willingness-to-pay amounted to R199 462.20. The median willingness-to-pay for a project to eradicate alien trout from the Rhodes region rivers and streams was estimated to be R41.18, while the total willingness-to-pay amounted to R28 829.36. This study concludes that trout and trout fly-fishing make a valuable economic contribution to the Rhodes region. The extent of the economic benefit provided by trout and trout fly-fishing services in the Rhodes region should be carefully considered in any stream management project.
- Full Text:
- Date Issued: 2009
The economic potential of small towns in the Eastern Cape Midlands
- Authors: Reynolds, Kian Andrew
- Date: 2009 , 2013-07-15
- Subjects: Small cities -- South Africa -- Eastern Cape Economic geography -- South Africa -- Eastern Cape Economic development -- South Africa -- Eastern Cape Rural development -- South Africa -- Eastern Cape Local government -- South Africa -- Eastern Cape Agriculture -- Economic aspects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1057 , http://hdl.handle.net/10962/d1007492
- Description: Small town economic decline has been experienced in many countries across the globe and can be explained through Geographical Economics, particularly the New Economic Geography, which suggests that agglomeration occurs as a natural outcome of high transportation and transactional costs. Yet despite the economic rationale behind their decline it is not an economic inevitability and there is evidence of towns in the United States, New Zealand and Canada that have reversed their economic fortunes. [n South Africa approximately 5 million people live in the 500 small towns and many more live in their rural hinterlands where povelty levels are extremely high within a national context. Within this context the thesis examines the current economic status and potential growth prospects of small towns in the Eastern Cape Midlands in South Africa in order to identify critical growth dri vers within small town economies. Five small towns were selected for the study via means of a purposive sample and were subjected to two regional modelling techniques, namely Shift-Share Analysis and Economic Base Theory to determine their current economic trends and past growth patterns, while a Social Accounting Matrix was utilised to identify important sectoral linkages, potential avenues for growth and evident leakages within small town economies. The sampled towns experienced negative economic growth trends between 1996 and 200 I, the primary loss in employment being accounted for by regional economic changes as opposed to national or industrial trends. The decline was more severely felt in primary/industrial sectors of the economy; evidence was found that manufacturing activities declined in all of the centres, despite the industry growing nationally. The Social Accounting Matrix highlighted strong links between the agricultural and services sectors within the national economy. Thus, considering that agriculture was identified as the primary economic driver within the region and the services sector the largest employer in all of the towns it is evident that the economic potential of the towns is to a certain extent linked to the success of agriculture in their hinterlands. Seven growth drivers, namely size, local economic development, existing markets, existing industries, infrastructure, municipal leadership and local entrepreneurs and were linked via means of a scoring framework to the sampled towns' economic potential. Whilst the results of actually determining a towns economic potential are not definitive the study does provide useful insights about the impact and potential role played by these drivers. Linked to this scoring framework and to Cook's (1971) hierarchy of places in the Eastern Cape Midlands four categories of towns were identified in the commercial falming areas and recommendations were made about appropriate developmental interventions at a municipal level, such as the need to retain local entrepreneurs and to invest in social amenities. Considering the evident need for development in rural areas the study provides critical insights into how to prioritise development strategies within small rural towns in commercial farming areas. In addition it would enable municipalities to critically reflect on their municipal Local Economic Development strategies and the relevance within the context of small towns. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2009
- Authors: Reynolds, Kian Andrew
- Date: 2009 , 2013-07-15
- Subjects: Small cities -- South Africa -- Eastern Cape Economic geography -- South Africa -- Eastern Cape Economic development -- South Africa -- Eastern Cape Rural development -- South Africa -- Eastern Cape Local government -- South Africa -- Eastern Cape Agriculture -- Economic aspects -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1057 , http://hdl.handle.net/10962/d1007492
- Description: Small town economic decline has been experienced in many countries across the globe and can be explained through Geographical Economics, particularly the New Economic Geography, which suggests that agglomeration occurs as a natural outcome of high transportation and transactional costs. Yet despite the economic rationale behind their decline it is not an economic inevitability and there is evidence of towns in the United States, New Zealand and Canada that have reversed their economic fortunes. [n South Africa approximately 5 million people live in the 500 small towns and many more live in their rural hinterlands where povelty levels are extremely high within a national context. Within this context the thesis examines the current economic status and potential growth prospects of small towns in the Eastern Cape Midlands in South Africa in order to identify critical growth dri vers within small town economies. Five small towns were selected for the study via means of a purposive sample and were subjected to two regional modelling techniques, namely Shift-Share Analysis and Economic Base Theory to determine their current economic trends and past growth patterns, while a Social Accounting Matrix was utilised to identify important sectoral linkages, potential avenues for growth and evident leakages within small town economies. The sampled towns experienced negative economic growth trends between 1996 and 200 I, the primary loss in employment being accounted for by regional economic changes as opposed to national or industrial trends. The decline was more severely felt in primary/industrial sectors of the economy; evidence was found that manufacturing activities declined in all of the centres, despite the industry growing nationally. The Social Accounting Matrix highlighted strong links between the agricultural and services sectors within the national economy. Thus, considering that agriculture was identified as the primary economic driver within the region and the services sector the largest employer in all of the towns it is evident that the economic potential of the towns is to a certain extent linked to the success of agriculture in their hinterlands. Seven growth drivers, namely size, local economic development, existing markets, existing industries, infrastructure, municipal leadership and local entrepreneurs and were linked via means of a scoring framework to the sampled towns' economic potential. Whilst the results of actually determining a towns economic potential are not definitive the study does provide useful insights about the impact and potential role played by these drivers. Linked to this scoring framework and to Cook's (1971) hierarchy of places in the Eastern Cape Midlands four categories of towns were identified in the commercial falming areas and recommendations were made about appropriate developmental interventions at a municipal level, such as the need to retain local entrepreneurs and to invest in social amenities. Considering the evident need for development in rural areas the study provides critical insights into how to prioritise development strategies within small rural towns in commercial farming areas. In addition it would enable municipalities to critically reflect on their municipal Local Economic Development strategies and the relevance within the context of small towns. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2009
The ecophysiology of Gelidium Pristoides (Turner) Kuetzing : towards commercial cultivation
- Authors: Steyn, Paul-Pierre
- Date: 2009
- Subjects: Marine algae -- South Africa , Marine algae -- Ecophysiology , Red algae -- South Africa , Gelidium -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10617 , http://hdl.handle.net/10948/1117 , Marine algae -- South Africa , Marine algae -- Ecophysiology , Red algae -- South Africa , Gelidium -- South Africa
- Description: The ecophysiology of the red alga Gelidium pristoides (Turner) Kuetzing was investigated in an effort to establish a technique for commercial cultivation. The seaweed is of commercial importance in South Africa where it is harvested from the intertidal zone rocky shores along the coast. It is dried and exported abroad for the extraction of agar. Yields and quality could be improved by cultivation in commercial systems. However, attempts at growing the seaweed in experimental systems have all ended in failure. This study aimed to describe the conditions in which the seaweed grows naturally; and investigate its physiological response to selected physical conditions in the laboratory in order to determine suitable conditions for mariculture. Ecological studies showed that G. pristoides grew above the spring low tide water level. The upper limit of the seaweed’s vertical distribution range, as well as its abundance, was largely dependent on wave exposure. The zone normally inhabited by G. pristoides was dominated by coralline turf in sheltered areas, while the abundance of G. pristoides increased towards more exposed rocky shore sites. The seaweed occurred among species such as Pattelid limpets and barnacles, but was usually the dominant macroalga in this zone, with coralline turf and encrusting algae being the only others. Physical conditions in the part of the intertidal zone inhabited by G. pristoides were highly variable. During low tide temperatures could vary by as much as 10°C within the three hours between tidal inundation of the seaweed population, while salinity varied by up to 9 ppt, and light intensity by as much as 800 μmol m-2 s-1. During these exposure periods the seaweed suffered up to 20% moisture loss. Laboratory experiments on the seaweed’s response to these conditions indicated that it was well adapted to such fluctuations. It had a broad salinity (20 and 40 ppt), and temperature tolerance range (18 to 24°C), with an o ptimum of temperature of 21°C for photosynthesis, while there was no difference in the photosynthetic rate of the alga within the 20 to 40 ppt salinity range. The alga had a low saturating irradiance (ca. 45 – 80 μmol m-2 s-1) equipping it well for photosynthesis in turbulent environments, with high light attenuation, but poorly to unattenuated light conditions. Exposure resulted in an initial increase in photosynthetic rate followed by a gradual decrease thereafter. pH drift experiments showed that low seawater pH, and associated increased carbon dioxide availability, resulted in an increase in photosynthetic rate. This response suggests that the seaweed has a high affinity for carbon dioxide, while the reduction in photosynthetic rate in response to bicarbonate use inhibition indicates that it also has the capacity for bicarbonate use. The high affinity of Gelidium pristoides for carbon dioxide as an inorganic carbon source appears to be the primary reason for the low abundance of the alga on sheltered rocky shore areas, and also explains the failure of the alga to grow in tank or open-water mariculture systems. Exposed rocky shores have experience heavy wave action, and the resultant aeration and mixing of nearshore waters increases the availability of carbon dioxide, which is considered a limiting resource. The absence of such mixing and aeration at sheltered site makes this less suitable habitat for G. pristoides. Periodic exposure also makes high levels of atmospheric carbon dioxide available from which the seaweed benefits. The traditional mariculture systems in which attempts have been made to cultivate the seaweed failed to satisfy either of the above conditions.
- Full Text:
- Date Issued: 2009
- Authors: Steyn, Paul-Pierre
- Date: 2009
- Subjects: Marine algae -- South Africa , Marine algae -- Ecophysiology , Red algae -- South Africa , Gelidium -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10617 , http://hdl.handle.net/10948/1117 , Marine algae -- South Africa , Marine algae -- Ecophysiology , Red algae -- South Africa , Gelidium -- South Africa
- Description: The ecophysiology of the red alga Gelidium pristoides (Turner) Kuetzing was investigated in an effort to establish a technique for commercial cultivation. The seaweed is of commercial importance in South Africa where it is harvested from the intertidal zone rocky shores along the coast. It is dried and exported abroad for the extraction of agar. Yields and quality could be improved by cultivation in commercial systems. However, attempts at growing the seaweed in experimental systems have all ended in failure. This study aimed to describe the conditions in which the seaweed grows naturally; and investigate its physiological response to selected physical conditions in the laboratory in order to determine suitable conditions for mariculture. Ecological studies showed that G. pristoides grew above the spring low tide water level. The upper limit of the seaweed’s vertical distribution range, as well as its abundance, was largely dependent on wave exposure. The zone normally inhabited by G. pristoides was dominated by coralline turf in sheltered areas, while the abundance of G. pristoides increased towards more exposed rocky shore sites. The seaweed occurred among species such as Pattelid limpets and barnacles, but was usually the dominant macroalga in this zone, with coralline turf and encrusting algae being the only others. Physical conditions in the part of the intertidal zone inhabited by G. pristoides were highly variable. During low tide temperatures could vary by as much as 10°C within the three hours between tidal inundation of the seaweed population, while salinity varied by up to 9 ppt, and light intensity by as much as 800 μmol m-2 s-1. During these exposure periods the seaweed suffered up to 20% moisture loss. Laboratory experiments on the seaweed’s response to these conditions indicated that it was well adapted to such fluctuations. It had a broad salinity (20 and 40 ppt), and temperature tolerance range (18 to 24°C), with an o ptimum of temperature of 21°C for photosynthesis, while there was no difference in the photosynthetic rate of the alga within the 20 to 40 ppt salinity range. The alga had a low saturating irradiance (ca. 45 – 80 μmol m-2 s-1) equipping it well for photosynthesis in turbulent environments, with high light attenuation, but poorly to unattenuated light conditions. Exposure resulted in an initial increase in photosynthetic rate followed by a gradual decrease thereafter. pH drift experiments showed that low seawater pH, and associated increased carbon dioxide availability, resulted in an increase in photosynthetic rate. This response suggests that the seaweed has a high affinity for carbon dioxide, while the reduction in photosynthetic rate in response to bicarbonate use inhibition indicates that it also has the capacity for bicarbonate use. The high affinity of Gelidium pristoides for carbon dioxide as an inorganic carbon source appears to be the primary reason for the low abundance of the alga on sheltered rocky shore areas, and also explains the failure of the alga to grow in tank or open-water mariculture systems. Exposed rocky shores have experience heavy wave action, and the resultant aeration and mixing of nearshore waters increases the availability of carbon dioxide, which is considered a limiting resource. The absence of such mixing and aeration at sheltered site makes this less suitable habitat for G. pristoides. Periodic exposure also makes high levels of atmospheric carbon dioxide available from which the seaweed benefits. The traditional mariculture systems in which attempts have been made to cultivate the seaweed failed to satisfy either of the above conditions.
- Full Text:
- Date Issued: 2009
The effect of a scientific literacy strategy on grade 6 and 7 learner's general literacy skills
- Authors: Mayaba, Nokhanyo Nomakhwezi
- Date: 2009
- Subjects: Science -- Language , Science -- Study and teaching (Secondary) -- South Africa , Communication in science
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9519 , http://hdl.handle.net/10948/1012 , Science -- Language , Science -- Study and teaching (Secondary) -- South Africa , Communication in science
- Description: In this study I investigated the effect of a science literacy strategy on the development of grade six and seven second-language learners’ general literacy skills in both their home language (isiXhosa) and language of instruction (English). The scientific literacy strategy used focuses on reading to learn science, writing to learn science, classroom discussion and argumentation. A mixed method design was used. Quantitative data were collected from baseline and post-testing of language skills of learners. Qualitative measures were generated through interviews of learners and teachers and classroom observations. The sample comprised of seven grades six and seven (multigrade classrooms) classes in seven primary schools situated in the rural areas near Hogsback in the Eastern Cape (five experimental schools and two control schools). Mean differences between the experimental and control groups for the reading, listening, writing and speaking aspects of the literacy tests were computed and the data generated were treated statistically using Analysis of Variance. The qualitative data were used to gain deeper insights into the quantitative results. The data suggest that the science literacy strategy statistically significantly improved the learners reading skills in English, their listening skills in both English and isiXhosa, and their writing skills in isiXhosa over a six-month period. Possible explanations for these results are that the reading material was in English only, extensive use of code-switching from English to Xhosa was made by the teachers while teaching, and that learner classroom discussion and writing in isiXhosa was encouraged.
- Full Text:
- Date Issued: 2009
- Authors: Mayaba, Nokhanyo Nomakhwezi
- Date: 2009
- Subjects: Science -- Language , Science -- Study and teaching (Secondary) -- South Africa , Communication in science
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9519 , http://hdl.handle.net/10948/1012 , Science -- Language , Science -- Study and teaching (Secondary) -- South Africa , Communication in science
- Description: In this study I investigated the effect of a science literacy strategy on the development of grade six and seven second-language learners’ general literacy skills in both their home language (isiXhosa) and language of instruction (English). The scientific literacy strategy used focuses on reading to learn science, writing to learn science, classroom discussion and argumentation. A mixed method design was used. Quantitative data were collected from baseline and post-testing of language skills of learners. Qualitative measures were generated through interviews of learners and teachers and classroom observations. The sample comprised of seven grades six and seven (multigrade classrooms) classes in seven primary schools situated in the rural areas near Hogsback in the Eastern Cape (five experimental schools and two control schools). Mean differences between the experimental and control groups for the reading, listening, writing and speaking aspects of the literacy tests were computed and the data generated were treated statistically using Analysis of Variance. The qualitative data were used to gain deeper insights into the quantitative results. The data suggest that the science literacy strategy statistically significantly improved the learners reading skills in English, their listening skills in both English and isiXhosa, and their writing skills in isiXhosa over a six-month period. Possible explanations for these results are that the reading material was in English only, extensive use of code-switching from English to Xhosa was made by the teachers while teaching, and that learner classroom discussion and writing in isiXhosa was encouraged.
- Full Text:
- Date Issued: 2009
The effect of literacy on access to and utilization of agricultural information for household food security at Chirau communal lands in Zimbabwe
- Authors: Gundu, Moira
- Date: 2009
- Subjects: Community information services -- Zimbabwe , Agriculture -- Information services , Women farmers -- Zimbabwe , Literacy -- Zimbabwe , Commons -- Zimbabwe , Food supply -- Zimbabwe , Communication in agriculture -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Bibl
- Identifier: vital:11570 , http://hdl.handle.net/10353/251 , Community information services -- Zimbabwe , Agriculture -- Information services , Women farmers -- Zimbabwe , Literacy -- Zimbabwe , Commons -- Zimbabwe , Food supply -- Zimbabwe , Communication in agriculture -- Zimbabwe
- Description: The research sought to examine the effect of literacy on access to, and utilization of agricultural information for household food security at Chirau Communal lands in Zimbabwe. The study was influenced by the diffusion of innovations approach based on interviews, observation and document study. Selected female farmers from Chirau communal lands were respondents to the self administered interviews and focus group discussions. Representatives from, Agriculture Extension and the Ministry of Agriculture were key informants. Systematic Random sampling was used to select 100 female respondents from the age of 18 to above 80 from wards 1 to 10 of Chirau Rural District in Zimbabwe. Data was analyzed into themes and coded for statistical analysis using the SPSS. The country is faced with food insecurity and the main findings of this study support the view that women play an active role in food production but their potential is limited by inadequate levels of literacy that affect the way they access and utilize resources for sustainable agriculture and household food security among other factors. This may be generalized to the situation of female farmers in Zimbabwe. Improved literacy competencies among the female farmers in Zimbabwe lends itself as one of the interventions that may assist in improving access to information and its effective utilization.. This calls decision-makers to boost literacy for women, develop available agricultural information resources and harness effort towards making them accessible. While interventions may be multi-sectored, the role of government is stressed in this report.
- Full Text:
- Date Issued: 2009
- Authors: Gundu, Moira
- Date: 2009
- Subjects: Community information services -- Zimbabwe , Agriculture -- Information services , Women farmers -- Zimbabwe , Literacy -- Zimbabwe , Commons -- Zimbabwe , Food supply -- Zimbabwe , Communication in agriculture -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Bibl
- Identifier: vital:11570 , http://hdl.handle.net/10353/251 , Community information services -- Zimbabwe , Agriculture -- Information services , Women farmers -- Zimbabwe , Literacy -- Zimbabwe , Commons -- Zimbabwe , Food supply -- Zimbabwe , Communication in agriculture -- Zimbabwe
- Description: The research sought to examine the effect of literacy on access to, and utilization of agricultural information for household food security at Chirau Communal lands in Zimbabwe. The study was influenced by the diffusion of innovations approach based on interviews, observation and document study. Selected female farmers from Chirau communal lands were respondents to the self administered interviews and focus group discussions. Representatives from, Agriculture Extension and the Ministry of Agriculture were key informants. Systematic Random sampling was used to select 100 female respondents from the age of 18 to above 80 from wards 1 to 10 of Chirau Rural District in Zimbabwe. Data was analyzed into themes and coded for statistical analysis using the SPSS. The country is faced with food insecurity and the main findings of this study support the view that women play an active role in food production but their potential is limited by inadequate levels of literacy that affect the way they access and utilize resources for sustainable agriculture and household food security among other factors. This may be generalized to the situation of female farmers in Zimbabwe. Improved literacy competencies among the female farmers in Zimbabwe lends itself as one of the interventions that may assist in improving access to information and its effective utilization.. This calls decision-makers to boost literacy for women, develop available agricultural information resources and harness effort towards making them accessible. While interventions may be multi-sectored, the role of government is stressed in this report.
- Full Text:
- Date Issued: 2009
The effect of load and technique on biomechanical and perceptual responses during dynamic pushing and pulling
- Authors: Desai, Sheena Dhiksha
- Date: 2009
- Subjects: Work -- Physiological aspects , Biomechanics , Human engineering , Lifting and carrying
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5109 , http://hdl.handle.net/10962/d1005187 , Work -- Physiological aspects , Biomechanics , Human engineering , Lifting and carrying
- Description: Changes in the industrial job profile, from lifting and lowering to repetitive dynamic pushing and pulling have been facilitated through the use of manual vehicles, aimed at minimising the workload. Yet, the demands of pushing and pulling have not been well documented. Using measures of the horizontal component of the hand forces, spinal kinematics, muscle activity at various sites on the upper body and body discomfort ratings, this study aimed at quantifying the biomechanical and perceptual demands of various dynamic push/pull techniques. 36 healthy male participants performed two-handed forward pushing, two-handed backward pulling and one-handed forward pulling, employing an industrial pallet jack supporting two loads of 250kg or 500kg. While no single technique was definitively identified as preferable regarding hand forces, pushing at 500kg elicited higher initial and sustained forces (p<0.05) than one- and two-handed pulling respectively. Increments in load mass from 250kg to 500kg resulted in significant differences in the initial, sustained and ending forces. With regard to spinal kinematics in the sagittal plane, two-handed pulling elicited the highest trunk flexion, and may therefore expose individuals to prolonged forward bending. Generally this technique was found to evoke the highest sagittal responses. Spinal kinematic measures in the lateral and transverse planes suggested that one-handed pulling was accompanied by the highest measures, and hence the greatest risk of developing lower back disorders related to this plane. Although various combinations of muscles were active during each technique, one-handed pulling and pushing, most often induced the highest muscle activation levels and two-handed pulling, the lowest. While erector spinae evidenced no significant differences between techniques at each load or between loads for the same technique, activation levels were high under all conditions. Perceptual ratings of body discomfort revealed that not only is the upper body susceptible to injuries during pushing and pulling, but also that the lower extremities may have a considerable role to play in these tasks, with the calves being a particular area of concern. Findings concluded that symmetrical pushing and pulling tasks are preferable.
- Full Text:
- Date Issued: 2009
- Authors: Desai, Sheena Dhiksha
- Date: 2009
- Subjects: Work -- Physiological aspects , Biomechanics , Human engineering , Lifting and carrying
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5109 , http://hdl.handle.net/10962/d1005187 , Work -- Physiological aspects , Biomechanics , Human engineering , Lifting and carrying
- Description: Changes in the industrial job profile, from lifting and lowering to repetitive dynamic pushing and pulling have been facilitated through the use of manual vehicles, aimed at minimising the workload. Yet, the demands of pushing and pulling have not been well documented. Using measures of the horizontal component of the hand forces, spinal kinematics, muscle activity at various sites on the upper body and body discomfort ratings, this study aimed at quantifying the biomechanical and perceptual demands of various dynamic push/pull techniques. 36 healthy male participants performed two-handed forward pushing, two-handed backward pulling and one-handed forward pulling, employing an industrial pallet jack supporting two loads of 250kg or 500kg. While no single technique was definitively identified as preferable regarding hand forces, pushing at 500kg elicited higher initial and sustained forces (p<0.05) than one- and two-handed pulling respectively. Increments in load mass from 250kg to 500kg resulted in significant differences in the initial, sustained and ending forces. With regard to spinal kinematics in the sagittal plane, two-handed pulling elicited the highest trunk flexion, and may therefore expose individuals to prolonged forward bending. Generally this technique was found to evoke the highest sagittal responses. Spinal kinematic measures in the lateral and transverse planes suggested that one-handed pulling was accompanied by the highest measures, and hence the greatest risk of developing lower back disorders related to this plane. Although various combinations of muscles were active during each technique, one-handed pulling and pushing, most often induced the highest muscle activation levels and two-handed pulling, the lowest. While erector spinae evidenced no significant differences between techniques at each load or between loads for the same technique, activation levels were high under all conditions. Perceptual ratings of body discomfort revealed that not only is the upper body susceptible to injuries during pushing and pulling, but also that the lower extremities may have a considerable role to play in these tasks, with the calves being a particular area of concern. Findings concluded that symmetrical pushing and pulling tasks are preferable.
- Full Text:
- Date Issued: 2009
The effect of load and technique on biomechanical and psychophysical responses to level dynamic pushing and pulling
- Authors: Bennett, Anthea Iona
- Date: 2009
- Subjects: Work -- Physiological aspects , Human engineering -- Case studies , Lifting and carrying -- Case studies , Biomechanics -- Case studies , Musculoskeletal system -- Wounds and injuries
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5110 , http://hdl.handle.net/10962/d1005188 , Work -- Physiological aspects , Human engineering -- Case studies , Lifting and carrying -- Case studies , Biomechanics -- Case studies , Musculoskeletal system -- Wounds and injuries
- Description: Pushing and pulling research has yet to fully elucidate the demands placed on manual workers despite established epidemiological links to musculoskeletal disorders. The current study therefore aimed to quantify biomechanical and perceptual responses of male operators to dynamic pushing and pulling tasks. Three common push/pull techniques (pushing, one handed and two handed pulling) were performed at loads of 250kg and 500kg using an industrial pallet jack in a laboratory environment. Thirty six healthy male subjects (age: 21 ±2 years, stature: 1791 ±43 mm and body mass: 77 ±10 kg) were required to perform six loaded experimental and two unloaded control conditions. Hand force exertion, muscle activity and gait pattern responses were collected during 10m push/pull trials on a coefficient controlled walkway; body discomfort was assessed on completion of the condition. Horizontal hand force responses were significantly (p<0.05) affected by load, with a linear relationship existing between the two. This relationship is determined by specific environmental and trolley factors and is context specific, depending on factors such as trolley maintenance and type of flooring. Hand force exertion responses were tenuously affected by technique at higher loads in the initial and sustained phases, with pushing inducing the greatest hand forces. Comparison of the motion phases revealed significant differences between all three phases, with the initial phase evidencing the greatest hand forces. Muscle activity responses demonstrated that unloaded backward walking evoked significantly higher muscle activation than did unloaded forward walking whilst increased muscular activity during load movement compared to unloaded walking was observed. However increasing load from 250kg to 500kg did not significantly impact the majority of muscle activity responses. When considering technique effects on muscle activity, of the significant differences found, all indicated that pushing imposed the least demand on the musculoskeletal system. Gait pattern responses were not significantly affected by load/technique combinations and were similar to those elicited during normal, unloaded walking. Perceptually, increased load led to increased perception of discomfort while pushing resulted in the least discomfort at both loads. From these psychophysical responses, the calves, shoulders and biceps were identified as areas of potential musculoskeletal injury, particularly during one and two handed pulling. Pushing elicited the highest hand forces and the lowest muscle activity responses in the majority of the conditions whilst psychophysical responses identified this technique as most satisfactory. Current results advocate the use of pushing when moving a load using a wheeled device. Suitability of one and two handed pulling remains contradictory, however results suggest that one handed pulling be employed at lower loads and two handed pulling at higher loads.
- Full Text:
- Date Issued: 2009
- Authors: Bennett, Anthea Iona
- Date: 2009
- Subjects: Work -- Physiological aspects , Human engineering -- Case studies , Lifting and carrying -- Case studies , Biomechanics -- Case studies , Musculoskeletal system -- Wounds and injuries
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5110 , http://hdl.handle.net/10962/d1005188 , Work -- Physiological aspects , Human engineering -- Case studies , Lifting and carrying -- Case studies , Biomechanics -- Case studies , Musculoskeletal system -- Wounds and injuries
- Description: Pushing and pulling research has yet to fully elucidate the demands placed on manual workers despite established epidemiological links to musculoskeletal disorders. The current study therefore aimed to quantify biomechanical and perceptual responses of male operators to dynamic pushing and pulling tasks. Three common push/pull techniques (pushing, one handed and two handed pulling) were performed at loads of 250kg and 500kg using an industrial pallet jack in a laboratory environment. Thirty six healthy male subjects (age: 21 ±2 years, stature: 1791 ±43 mm and body mass: 77 ±10 kg) were required to perform six loaded experimental and two unloaded control conditions. Hand force exertion, muscle activity and gait pattern responses were collected during 10m push/pull trials on a coefficient controlled walkway; body discomfort was assessed on completion of the condition. Horizontal hand force responses were significantly (p<0.05) affected by load, with a linear relationship existing between the two. This relationship is determined by specific environmental and trolley factors and is context specific, depending on factors such as trolley maintenance and type of flooring. Hand force exertion responses were tenuously affected by technique at higher loads in the initial and sustained phases, with pushing inducing the greatest hand forces. Comparison of the motion phases revealed significant differences between all three phases, with the initial phase evidencing the greatest hand forces. Muscle activity responses demonstrated that unloaded backward walking evoked significantly higher muscle activation than did unloaded forward walking whilst increased muscular activity during load movement compared to unloaded walking was observed. However increasing load from 250kg to 500kg did not significantly impact the majority of muscle activity responses. When considering technique effects on muscle activity, of the significant differences found, all indicated that pushing imposed the least demand on the musculoskeletal system. Gait pattern responses were not significantly affected by load/technique combinations and were similar to those elicited during normal, unloaded walking. Perceptually, increased load led to increased perception of discomfort while pushing resulted in the least discomfort at both loads. From these psychophysical responses, the calves, shoulders and biceps were identified as areas of potential musculoskeletal injury, particularly during one and two handed pulling. Pushing elicited the highest hand forces and the lowest muscle activity responses in the majority of the conditions whilst psychophysical responses identified this technique as most satisfactory. Current results advocate the use of pushing when moving a load using a wheeled device. Suitability of one and two handed pulling remains contradictory, however results suggest that one handed pulling be employed at lower loads and two handed pulling at higher loads.
- Full Text:
- Date Issued: 2009
The effect of progressive resistance training on the blood lipid profile in post-menopausal women
- Authors: Viljoen, Janet Erica
- Date: 2009
- Subjects: Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5113 , http://hdl.handle.net/10962/d1005191 , Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Description: The main purpose of this study was to assess the effect of progressive resistance training on the blood lipid profile in post-menopausal women. Thirty-four female subjects aged 50 to 75 years were selected from the population of Grahamstown, South Africa. All participants were previously sedentary and possessed at least one lipid profile abnormality but were otherwise healthy. Pre-tests included a sub-maximal stress Electrocardiogram, measures of stature, mass, central and limb girths as well as an oral glucose tolerance test (OGTT) and a total blood lipid profile. Participants took part in a 24-week progressive resistance training programme, consisting of three supervised sessions per week, each lasting 45 minutes and were not permitted to lose more than 10% of initial body mass during the 24-week study. All pre-test measures, excluding the stress ECG and the OGTT, were repeated every four weeks for the duration of the study. Results were that body mass, body mass index and waist-to-hip ratio did not change. Girth measures at mid-humerus, chest, waist, hip, mid-quadricep and mid-gastrocnemius all decreased significantly (p=0.05). LDL-cholesterol increased significantly over the course of 24 weeks (3.61mmol.L-1 to 4.07mmol.L-1) as did total cholesterol (5.81mmol.L-1 to 6.24mmol.L-1). Triglyceride concentration remained unchanged and HDL-cholesterol decreased significantly between the pre-test measure (1.55mmol.L-1) and the measure after six months (1.42mmol.L-1). It can be concluded that the blood lipid profile in a sample of post-menopausal women was not positively affected by a progressive resistance training programme over a 24 week period. , Maiden name: Kelly, Janet Erica
- Full Text:
- Date Issued: 2009
- Authors: Viljoen, Janet Erica
- Date: 2009
- Subjects: Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5113 , http://hdl.handle.net/10962/d1005191 , Weight training for women -- Physiological aspects , Weight training -- Physiological aspects , Exercise for women -- Physiological aspects , Physical fitness for women -- Physiological aspects , Energy metabolism , Middle aged women -- Health and hygiene
- Description: The main purpose of this study was to assess the effect of progressive resistance training on the blood lipid profile in post-menopausal women. Thirty-four female subjects aged 50 to 75 years were selected from the population of Grahamstown, South Africa. All participants were previously sedentary and possessed at least one lipid profile abnormality but were otherwise healthy. Pre-tests included a sub-maximal stress Electrocardiogram, measures of stature, mass, central and limb girths as well as an oral glucose tolerance test (OGTT) and a total blood lipid profile. Participants took part in a 24-week progressive resistance training programme, consisting of three supervised sessions per week, each lasting 45 minutes and were not permitted to lose more than 10% of initial body mass during the 24-week study. All pre-test measures, excluding the stress ECG and the OGTT, were repeated every four weeks for the duration of the study. Results were that body mass, body mass index and waist-to-hip ratio did not change. Girth measures at mid-humerus, chest, waist, hip, mid-quadricep and mid-gastrocnemius all decreased significantly (p=0.05). LDL-cholesterol increased significantly over the course of 24 weeks (3.61mmol.L-1 to 4.07mmol.L-1) as did total cholesterol (5.81mmol.L-1 to 6.24mmol.L-1). Triglyceride concentration remained unchanged and HDL-cholesterol decreased significantly between the pre-test measure (1.55mmol.L-1) and the measure after six months (1.42mmol.L-1). It can be concluded that the blood lipid profile in a sample of post-menopausal women was not positively affected by a progressive resistance training programme over a 24 week period. , Maiden name: Kelly, Janet Erica
- Full Text:
- Date Issued: 2009
The effect of temperature and turbidity on spawning chokka squid, loligo reynaudii, in Eastern Cape waters
- Authors: Downey, Nicola Jean
- Date: 2009
- Subjects: Squids -- Effect of temperature on -- South Africa , Squids -- Effect of turbidity on -- South Africa , Squids -- Spawning -- South Africa , Loliginidae -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10719 , http://hdl.handle.net/10948/945 , http://hdl.handle.net/10948/d1012895 , Squids -- Effect of temperature on -- South Africa , Squids -- Effect of turbidity on -- South Africa , Squids -- Spawning -- South Africa , Loliginidae -- South Africa
- Description: Several studies suggest the environment influences chokka squid catches which are mostly based on the successful formation of inshore spawning aggregations. None of the evidence, however, is direct observation. Acoustic telemetry offers a means to determine the response of spawners to changes in the environment and insight into the behaviour of spawning squid. A hexagonal array of VR2 receivers deployed 500 m apart was deemed to be ideal to monitor the movement patterns of squid on the spawning sites. In isothermic conditions, an area up to 1.28 km2 could be monitored as there was an approximate 50 m overlap in individual VR2 receiver range. In thermocline conditions however, “acoustic dead zones” as wide as 350 m may have existed between VR2 receivers, limiting the performance of this configuration. Similarly benthic turbidity events would also decrease detection range and limit performance. A hexagonal array of VR2 receivers was moored in Kromme Bay on and around active spawning aggregations during the squid fishery closed seasons of November 2003, 2004, 2005 and 2006. Squid were caught on jigs and tagged with V9 acoustic pressure telemetry transmitters. A total of 45 animals were tagged. Presence-absence analysis identified three general behaviours: (1) arrival at dawn and departure after dusk, (2) a continuous and uninterrupted presence for a number of days and (3) presence interrupted by frequent but short periods of absence. Overall, the data suggests frequent migrations between spawning aggregations and offshore feeding grounds. The pressure sensor data showed both males and females stayed persistently near the seabed during the day, but at night, this pattern was broken with common activity higher up in the water column. The squid did not remain exclusively in the water column and regularly made excursions to the seabed. CTD and temperature data indicated the intrusion of a cold bottom layer due to upwelling at the monitored spawning sites on a number of occasions. The formation of spawning aggregations appears to be triggered by upwelling events and spawning behaviour, once initiated, disrupted by upwelling events with a rapid onset, possibly due to an inability to adapt physiologically over such a short time period.
- Full Text:
- Date Issued: 2009
- Authors: Downey, Nicola Jean
- Date: 2009
- Subjects: Squids -- Effect of temperature on -- South Africa , Squids -- Effect of turbidity on -- South Africa , Squids -- Spawning -- South Africa , Loliginidae -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10719 , http://hdl.handle.net/10948/945 , http://hdl.handle.net/10948/d1012895 , Squids -- Effect of temperature on -- South Africa , Squids -- Effect of turbidity on -- South Africa , Squids -- Spawning -- South Africa , Loliginidae -- South Africa
- Description: Several studies suggest the environment influences chokka squid catches which are mostly based on the successful formation of inshore spawning aggregations. None of the evidence, however, is direct observation. Acoustic telemetry offers a means to determine the response of spawners to changes in the environment and insight into the behaviour of spawning squid. A hexagonal array of VR2 receivers deployed 500 m apart was deemed to be ideal to monitor the movement patterns of squid on the spawning sites. In isothermic conditions, an area up to 1.28 km2 could be monitored as there was an approximate 50 m overlap in individual VR2 receiver range. In thermocline conditions however, “acoustic dead zones” as wide as 350 m may have existed between VR2 receivers, limiting the performance of this configuration. Similarly benthic turbidity events would also decrease detection range and limit performance. A hexagonal array of VR2 receivers was moored in Kromme Bay on and around active spawning aggregations during the squid fishery closed seasons of November 2003, 2004, 2005 and 2006. Squid were caught on jigs and tagged with V9 acoustic pressure telemetry transmitters. A total of 45 animals were tagged. Presence-absence analysis identified three general behaviours: (1) arrival at dawn and departure after dusk, (2) a continuous and uninterrupted presence for a number of days and (3) presence interrupted by frequent but short periods of absence. Overall, the data suggests frequent migrations between spawning aggregations and offshore feeding grounds. The pressure sensor data showed both males and females stayed persistently near the seabed during the day, but at night, this pattern was broken with common activity higher up in the water column. The squid did not remain exclusively in the water column and regularly made excursions to the seabed. CTD and temperature data indicated the intrusion of a cold bottom layer due to upwelling at the monitored spawning sites on a number of occasions. The formation of spawning aggregations appears to be triggered by upwelling events and spawning behaviour, once initiated, disrupted by upwelling events with a rapid onset, possibly due to an inability to adapt physiologically over such a short time period.
- Full Text:
- Date Issued: 2009
The effect of tulbaghia violacea plant extract on the growth of aspergillus species
- Authors: Belewa, Xoliswa Vuyokazi
- Date: 2009
- Subjects: Plant products , Plant extracts , Traditional medicine
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10315 , http://hdl.handle.net/10948/d1008186 , Plant products , Plant extracts , Traditional medicine
- Description: Traditional medicine has become an important part of healthcare worldwide. It is estimated that about 25 percent of prescribed medicines contain plant products or active compounds derived from plants. In South Africa, traditional medicine forms part of the culture and tradition of most communities. Garlic compounds have been shown to have a variety of antimicrobial properties. Amongst these are antifungal, antibacterial, antiviral and anti protozoal activities. Allicin and its breakdown products have been shown to be the main active compounds which possess these properties. Tulbaghia violacea has been used for the treatment of a variety of illnesses including asthma, fever, oesophageal cancer, constipation and hypertension. This study investigated the antifungal nature of T.violacea on the morphology, spore germination and lipid synthesis of Aspergillus flavus and Aspergillus parasiticus. The results of this study showed that the plant extract inhibited A. flavus growth at a minimal inhibitory concentration of 15mg/ml and was fungicidal at 20mg/ml and above. A. parasiticus was not inhibited at 25mg/ml indicating resistance to the inhibitory component of the plant extract. A measure of metabolic activity using the XTT assay showed reduced metabolic activity in the presence of increasing concentrations of the plant extract. Higher extract concentrations resulted in higher percentage inhibition of fungal growth for both fungal species with up to 98 percent inhibition being observed for the highest extract concentrations for both fungi. Germination was also delayed in the presence of 15mg/ml plant extract concentration by up to 60hr for A. flavus and 48hr for A. parasititcus. The TEM results showed increased thickening of the cell wall with higher extract concentrations. The thickening was greater for A. flavus than for A. parasiticus. Cell wall thickening may be the reason for the delay in germination in both species. Lipid production was reduced in the presence of plant extracts when compared to the control. The plant extracts inhibited triglyceride production at 15mg/ml for both A. flavus and A. parasiticus. The results therefore indicate that T. violacea extracts are antifungal and probably affect germination through interactions with the cell wall. It is possible that the extract affects lipid production in Aspergillus species.
- Full Text:
- Date Issued: 2009
- Authors: Belewa, Xoliswa Vuyokazi
- Date: 2009
- Subjects: Plant products , Plant extracts , Traditional medicine
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10315 , http://hdl.handle.net/10948/d1008186 , Plant products , Plant extracts , Traditional medicine
- Description: Traditional medicine has become an important part of healthcare worldwide. It is estimated that about 25 percent of prescribed medicines contain plant products or active compounds derived from plants. In South Africa, traditional medicine forms part of the culture and tradition of most communities. Garlic compounds have been shown to have a variety of antimicrobial properties. Amongst these are antifungal, antibacterial, antiviral and anti protozoal activities. Allicin and its breakdown products have been shown to be the main active compounds which possess these properties. Tulbaghia violacea has been used for the treatment of a variety of illnesses including asthma, fever, oesophageal cancer, constipation and hypertension. This study investigated the antifungal nature of T.violacea on the morphology, spore germination and lipid synthesis of Aspergillus flavus and Aspergillus parasiticus. The results of this study showed that the plant extract inhibited A. flavus growth at a minimal inhibitory concentration of 15mg/ml and was fungicidal at 20mg/ml and above. A. parasiticus was not inhibited at 25mg/ml indicating resistance to the inhibitory component of the plant extract. A measure of metabolic activity using the XTT assay showed reduced metabolic activity in the presence of increasing concentrations of the plant extract. Higher extract concentrations resulted in higher percentage inhibition of fungal growth for both fungal species with up to 98 percent inhibition being observed for the highest extract concentrations for both fungi. Germination was also delayed in the presence of 15mg/ml plant extract concentration by up to 60hr for A. flavus and 48hr for A. parasititcus. The TEM results showed increased thickening of the cell wall with higher extract concentrations. The thickening was greater for A. flavus than for A. parasiticus. Cell wall thickening may be the reason for the delay in germination in both species. Lipid production was reduced in the presence of plant extracts when compared to the control. The plant extracts inhibited triglyceride production at 15mg/ml for both A. flavus and A. parasiticus. The results therefore indicate that T. violacea extracts are antifungal and probably affect germination through interactions with the cell wall. It is possible that the extract affects lipid production in Aspergillus species.
- Full Text:
- Date Issued: 2009
The effectiveness of succession planning in SARS enforcement Port Elizabeth
- Authors: Erasmus, Lynne
- Date: 2009
- Subjects: Executive succession , Manpower planning , Strategic planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8669 , http://hdl.handle.net/10948/1208 , Executive succession , Manpower planning , Strategic planning
- Description: This research study addressed the importance of succession planning for the organisations’ survival, which depends on the continuous supply of competent, experienced and well trained managers. It addresses the problem of determining the strategies that can be used by SARS Enforcement Port Elizabeth to manage succession planning effectively. To achieve this objective a comprehensive literature study was performed to determine the views on various succession planning models. The literature review serves as a model in the development of a guideline for SARS Enforcement Port Elizabeth management to manage succession planning. An interview was conducted with the Human Resource Manager and Middle management from the various departments who were requested to complete a questionnaire in order to determine the current practices of succession planning. The questionnaire was developed in accordance with the findings from the research. A pilot study was conducted to evaluate the relevance of the study to the problem questions and to evaluate whether the questionnaire will be easily understood. The answers of the respondents were analysed and compared to the findings of the literature study. The information obtained from the literature study and from the respondents resulted in various recommendations and conclusions.
- Full Text:
- Date Issued: 2009
- Authors: Erasmus, Lynne
- Date: 2009
- Subjects: Executive succession , Manpower planning , Strategic planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8669 , http://hdl.handle.net/10948/1208 , Executive succession , Manpower planning , Strategic planning
- Description: This research study addressed the importance of succession planning for the organisations’ survival, which depends on the continuous supply of competent, experienced and well trained managers. It addresses the problem of determining the strategies that can be used by SARS Enforcement Port Elizabeth to manage succession planning effectively. To achieve this objective a comprehensive literature study was performed to determine the views on various succession planning models. The literature review serves as a model in the development of a guideline for SARS Enforcement Port Elizabeth management to manage succession planning. An interview was conducted with the Human Resource Manager and Middle management from the various departments who were requested to complete a questionnaire in order to determine the current practices of succession planning. The questionnaire was developed in accordance with the findings from the research. A pilot study was conducted to evaluate the relevance of the study to the problem questions and to evaluate whether the questionnaire will be easily understood. The answers of the respondents were analysed and compared to the findings of the literature study. The information obtained from the literature study and from the respondents resulted in various recommendations and conclusions.
- Full Text:
- Date Issued: 2009
The effectiveness of traditional leaders in the development of the rural Eastern Cape
- Authors: Kewana, Nonzaliseko Gladys
- Date: 2009
- Subjects: Local government -- South Africa -- Eastern Cape , Tribal government -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape , Political leadership -- South Africa
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11411 , http://hdl.handle.net/10353/296 , Local government -- South Africa -- Eastern Cape , Tribal government -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape , Political leadership -- South Africa
- Description: Traditional leadership is a contested field in social and political environments. The new, democratic government has created an environment that accommodates the existence of traditional leadership by introducing policies that guide their functioning. The White Paper on Traditional Leadership of 2003 spells out the roles and responsibilities of traditional leaders. This document when used with the Municipal Structures Act 117 of 2003 may minimise the existing tensions between the traditional leaders and the democratically elected councillors. The White Paper on Traditional Leadership of 2003 has been designed accordingly with the Bill of Rights. Equality and prevention of unfair discrimination, has been entrenched in the Bill of Rights of the Republic of South Africa. Traditional leaders, therefore, do have a space in the governance of South Africa. They are expected to participate in development programmes and in promoting service delivery. This study used the method of a case study. It is a qualitative study. Questionnaires and interviews are tools used to collect data. Various observations and findings were made with proposed recommendations. Most important to note is that, the traditional leaders are aware of the White Paper on Traditional Leadership but do not know what to do about it. This reveals that there is a gap between practice and policy. is the recommendation of the study that, the officials from Local Government and Traditional Affairs and those from the municipalities workshop and mentor the traditional leaders as well as the democratically elected councillors. Such a practice could minimise if not eliminate the tensions that result in poor service delivery.
- Full Text:
- Date Issued: 2009
- Authors: Kewana, Nonzaliseko Gladys
- Date: 2009
- Subjects: Local government -- South Africa -- Eastern Cape , Tribal government -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape , Political leadership -- South Africa
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11411 , http://hdl.handle.net/10353/296 , Local government -- South Africa -- Eastern Cape , Tribal government -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape , Political leadership -- South Africa
- Description: Traditional leadership is a contested field in social and political environments. The new, democratic government has created an environment that accommodates the existence of traditional leadership by introducing policies that guide their functioning. The White Paper on Traditional Leadership of 2003 spells out the roles and responsibilities of traditional leaders. This document when used with the Municipal Structures Act 117 of 2003 may minimise the existing tensions between the traditional leaders and the democratically elected councillors. The White Paper on Traditional Leadership of 2003 has been designed accordingly with the Bill of Rights. Equality and prevention of unfair discrimination, has been entrenched in the Bill of Rights of the Republic of South Africa. Traditional leaders, therefore, do have a space in the governance of South Africa. They are expected to participate in development programmes and in promoting service delivery. This study used the method of a case study. It is a qualitative study. Questionnaires and interviews are tools used to collect data. Various observations and findings were made with proposed recommendations. Most important to note is that, the traditional leaders are aware of the White Paper on Traditional Leadership but do not know what to do about it. This reveals that there is a gap between practice and policy. is the recommendation of the study that, the officials from Local Government and Traditional Affairs and those from the municipalities workshop and mentor the traditional leaders as well as the democratically elected councillors. Such a practice could minimise if not eliminate the tensions that result in poor service delivery.
- Full Text:
- Date Issued: 2009
The effects of a Kenyan antidiabetic plant on insulin homeostasis
- Authors: Suleiman, Khairunisa Yahya
- Date: 2009
- Subjects: Medicinal plants -- Kenya , Insulin resistance
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10326 , http://hdl.handle.net/10948/1055 , Medicinal plants -- Kenya , Insulin resistance
- Description: The metabolic disorder diabetes; is a global epidemic affecting people in developed countries and increasingly in developing countries. In two decades time, 350 million people will be diabetic at the current rate of prevalence. In a preliminary study, insulin resistant rats were treated with Prunus Africana (plant A) for 28 days. Plasma samples obtained from P. africana treated rats had increased insulin levels compared to normal and untreated insulin resistant rats (Karachi, 2009). The treatment of insulin resistant rats with P. africana also showed increased glucose uptake in rat adipose tissue (Karachi, 2009), suggesting that P. africana had anti-diabetic properties. The aim of the study was to investigate the mechanism of the anti-diabetic properties of P africana extract. Increased insulin secretion was confirmed by the increased Cpeptide concentration in plasma samples of rats treated with P. africana. In order to explain the high insulin levels, several hypothesis’ were investigated: (1) P. africana may increase insulin secretion in β cells, hence the effect of P. africana on insulin secretion by INS-1 cells was investigated; (2) P. africana may increase insulin secretion by prolonging the half-life of glucagon like peptide-1 (GLP-1) by decreasing dipeptidyl peptidase IV (DPP IV) activity; the effect of P. africana on DPP IV activity was determined spectrophotometrically, (3) P. africana may increase the half-life of insulin in the plasma by decreasing the activity of insulin degrading enzyme (IDE); the effect of P. africana on IDE in rat muscle and spleen samples was investigated. To explain the increased glucose uptake in adipose tissue observed in the previous study two parameters were investigated: (1) increased GLUT4 expression in P. africana treated rats; the effect of P. africana treatment on the expression of glucose transporter 4 (GLUT4) was determined using real-time polymerase chain reaction (RT-PCR), (2) P. africana may increase glucose utilization; the effect of P. africana on glucose utilization was determined in 3T3-L1 cells. The plant extract did not significantly increase insulin secretion by INS-1 cells in the absence of glucose. P. africana decreased DPP IV activity in rat plasma when compared to the untreated insulin resistant rats and this could be a mechanism by which insulin secretion is increased during plant treatment. P. africana decreased IDE activity (however not significantly) when compared to the untreated insulin resistant The effects of a Kenyan antidiabetic plant on insulin homeostasis KY Suleiman VII rats. P. africana appeared to have no effect on GLUT4 expression. The plant appeared to increase glucose utilization in 3T3-L1 cells in the absence of insulin suggesting that P. africana may have insulin like activity. In summary, this study indicates that P. africana is indirectly involved in inhibiting DDPIV. This in turn can increase the half life of GLP-1, which in turn can enhance the secretion of insulin. P. africana increases glucose utilization although there was no evidence that the GLUT 4 transporter has a higher expression in the plant treated rats. Further studies should be conducted to investigate the expression of GLUT1 under the same conditons.
- Full Text:
- Date Issued: 2009
- Authors: Suleiman, Khairunisa Yahya
- Date: 2009
- Subjects: Medicinal plants -- Kenya , Insulin resistance
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10326 , http://hdl.handle.net/10948/1055 , Medicinal plants -- Kenya , Insulin resistance
- Description: The metabolic disorder diabetes; is a global epidemic affecting people in developed countries and increasingly in developing countries. In two decades time, 350 million people will be diabetic at the current rate of prevalence. In a preliminary study, insulin resistant rats were treated with Prunus Africana (plant A) for 28 days. Plasma samples obtained from P. africana treated rats had increased insulin levels compared to normal and untreated insulin resistant rats (Karachi, 2009). The treatment of insulin resistant rats with P. africana also showed increased glucose uptake in rat adipose tissue (Karachi, 2009), suggesting that P. africana had anti-diabetic properties. The aim of the study was to investigate the mechanism of the anti-diabetic properties of P africana extract. Increased insulin secretion was confirmed by the increased Cpeptide concentration in plasma samples of rats treated with P. africana. In order to explain the high insulin levels, several hypothesis’ were investigated: (1) P. africana may increase insulin secretion in β cells, hence the effect of P. africana on insulin secretion by INS-1 cells was investigated; (2) P. africana may increase insulin secretion by prolonging the half-life of glucagon like peptide-1 (GLP-1) by decreasing dipeptidyl peptidase IV (DPP IV) activity; the effect of P. africana on DPP IV activity was determined spectrophotometrically, (3) P. africana may increase the half-life of insulin in the plasma by decreasing the activity of insulin degrading enzyme (IDE); the effect of P. africana on IDE in rat muscle and spleen samples was investigated. To explain the increased glucose uptake in adipose tissue observed in the previous study two parameters were investigated: (1) increased GLUT4 expression in P. africana treated rats; the effect of P. africana treatment on the expression of glucose transporter 4 (GLUT4) was determined using real-time polymerase chain reaction (RT-PCR), (2) P. africana may increase glucose utilization; the effect of P. africana on glucose utilization was determined in 3T3-L1 cells. The plant extract did not significantly increase insulin secretion by INS-1 cells in the absence of glucose. P. africana decreased DPP IV activity in rat plasma when compared to the untreated insulin resistant rats and this could be a mechanism by which insulin secretion is increased during plant treatment. P. africana decreased IDE activity (however not significantly) when compared to the untreated insulin resistant The effects of a Kenyan antidiabetic plant on insulin homeostasis KY Suleiman VII rats. P. africana appeared to have no effect on GLUT4 expression. The plant appeared to increase glucose utilization in 3T3-L1 cells in the absence of insulin suggesting that P. africana may have insulin like activity. In summary, this study indicates that P. africana is indirectly involved in inhibiting DDPIV. This in turn can increase the half life of GLP-1, which in turn can enhance the secretion of insulin. P. africana increases glucose utilization although there was no evidence that the GLUT 4 transporter has a higher expression in the plant treated rats. Further studies should be conducted to investigate the expression of GLUT1 under the same conditons.
- Full Text:
- Date Issued: 2009
The evaluation of Eudragit microcapsules manufactured by solvent evaporation using USP Apparatus 1
- Khamanga, Sandile M, Parfitt, Natalie R, Nyamuzhiwa, Tsitsi, Haidula, Hendrina, Walker, Roderick B
- Authors: Khamanga, Sandile M , Parfitt, Natalie R , Nyamuzhiwa, Tsitsi , Haidula, Hendrina , Walker, Roderick B
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:6389 , http://hdl.handle.net/10962/d1006310
- Description: The objectives of this study were to prepare microcapsules containing verapamil and propranolol and to evaluate the kinetics and mechanism of drug release from the microcapsules using USP Apparatus 1. The effects of polymer concentration and polymer type on the cumulative amount of drug released were evaluated. The microcapsules were manufactured using Eudragit RS and RL polymers by solvent evaporation with the ultimate aim of prolonging drug release. Twenty-four formulations were prepared using different drug/polymer ratios. The effects of polymer type and polymer/drug ratios on the size, flow properties, surface morphology, and the release characteristics of the microcapsules were examined. The effects of drug inclusion methods on drug loading, encapsulation efficiency, and release properties of the complex microcapsules were also investigated. The formulations containing drug/polymer ratio 1:4 (w/w) were the most appropriate with respect to encapsulation efficiency (70%), flow properties (HR = 1.2), drug loading (15–20%), and drug release characteristics, in all cases. The release kinetics from the different formulations followed mainly a diffusion-controlled mechanism.
- Full Text:
- Date Issued: 2009
- Authors: Khamanga, Sandile M , Parfitt, Natalie R , Nyamuzhiwa, Tsitsi , Haidula, Hendrina , Walker, Roderick B
- Date: 2009
- Language: English
- Type: text , Article
- Identifier: vital:6389 , http://hdl.handle.net/10962/d1006310
- Description: The objectives of this study were to prepare microcapsules containing verapamil and propranolol and to evaluate the kinetics and mechanism of drug release from the microcapsules using USP Apparatus 1. The effects of polymer concentration and polymer type on the cumulative amount of drug released were evaluated. The microcapsules were manufactured using Eudragit RS and RL polymers by solvent evaporation with the ultimate aim of prolonging drug release. Twenty-four formulations were prepared using different drug/polymer ratios. The effects of polymer type and polymer/drug ratios on the size, flow properties, surface morphology, and the release characteristics of the microcapsules were examined. The effects of drug inclusion methods on drug loading, encapsulation efficiency, and release properties of the complex microcapsules were also investigated. The formulations containing drug/polymer ratio 1:4 (w/w) were the most appropriate with respect to encapsulation efficiency (70%), flow properties (HR = 1.2), drug loading (15–20%), and drug release characteristics, in all cases. The release kinetics from the different formulations followed mainly a diffusion-controlled mechanism.
- Full Text:
- Date Issued: 2009
The evolving image of the German Democratic republic as reflected in the works of Jurek Becker and Christa Wolf
- Authors: Williams, Alison Elizabeth
- Date: 2009
- Subjects: Becker, Jurek, 1937-1997 Wolf, Christa German fiction -- Germany (East) -- 20th Century Germany (East) -- History -- 20th Century Germany (East) In literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3584 , http://hdl.handle.net/10962/d1002159
- Description: The primary objective of this thesis is to demonstrate the direct relationship between history and literature, with particular reference to literature published in the German Democratic Republic. It explores the period of history from 1945 to 1990 describing the collapse of National Socialist Germany after World War Two; the formation of the Federal Republic of Germany in the West and the German Democratic Republic in the East in 1949; the historical, political and cultural evolution of East Germany until the fall of the Berlin Wall in November 1989, and finally the absorption of the German Democratic Republic into the Federal Republic of Germany in 1990.
- Full Text:
- Date Issued: 2009
- Authors: Williams, Alison Elizabeth
- Date: 2009
- Subjects: Becker, Jurek, 1937-1997 Wolf, Christa German fiction -- Germany (East) -- 20th Century Germany (East) -- History -- 20th Century Germany (East) In literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3584 , http://hdl.handle.net/10962/d1002159
- Description: The primary objective of this thesis is to demonstrate the direct relationship between history and literature, with particular reference to literature published in the German Democratic Republic. It explores the period of history from 1945 to 1990 describing the collapse of National Socialist Germany after World War Two; the formation of the Federal Republic of Germany in the West and the German Democratic Republic in the East in 1949; the historical, political and cultural evolution of East Germany until the fall of the Berlin Wall in November 1989, and finally the absorption of the German Democratic Republic into the Federal Republic of Germany in 1990.
- Full Text:
- Date Issued: 2009
The experience and aftermath of chronic bullying on individuals' socio-emotional development
- Authors: Darney, Christine Kyle
- Date: 2009
- Subjects: Bullying -- South Africa -- Psychological aspects , Bullying in schools -- South Africa -- Prevention
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9885 , http://hdl.handle.net/10948/1214 , Bullying -- South Africa -- Psychological aspects , Bullying in schools -- South Africa -- Prevention
- Description: Bullying behaviour is fast becoming a common feature in schools around the world. It is a practice that provokes concern, as it infringes upon the child’s right to human dignity, privacy, freedom and security. The physical, emotional and educational consequences of bullying behaviour can never be underestimated (Oyaziwo, 2008). Limited research has been conducted in South Africa regarding the prevalence and possible long-term effects of chronic bullying at school. This study intended to explore and describe the prevalence of bullying behaviour among a sample of grade 8 learners and the prevalence of previous chronic bullying at school among a sample of young adults in the Nelson Mandela Metropole. In addition, the study aimed to explore and describe the relationship between chronic bullying at school and self-esteem and attachment styles. Finally, the contextual factors which may influence the outcomes of chronic bullying for victims were explored and described. The study was exploratory descriptive in nature and employed a mixed method research design. Participants were selected by means of non-probability sampling. The sample consisted of 225 grade 8 learners at a secondary school in the Nelson Mandela Metropole and 101 young adult participants who had completed their school education in the Nelson Mandela Metropole within the past sixteen years. Data on the demographics of the sample was gathered through the administration of a biographical questionnaire. Furthermore, the Olweus (1996) Bully/Victim Questionnaire was utilized in order to obtain information about the prevalence of bullying behaviours among the participants. James Battle’s (1981) Culture-Free Self-Esteem Inventories were used to measure the construct of self-esteem, and Bartholomew and Horowitz’ (1991) Relationship Questionnaire was employed in order to identify the participants’ current attachment styles. Individual semi-structured interviews were later conducted among a sub-set of young adult participants, who had experienced chronic bullying at school, in order to identify the contextual factors which may have influenced the xiii outcomes of their experiences of victimization. Descriptive and inferential statistics, including correlations and multivariate analysis of variance (ANOVA), were utilized in order to analyze the quantitative data. Key findings revealed that eighty-five percent of the grade 8 participants had been involved in bullying behaviours at school this year and ninety-one percent of the young adult participants had been involved in bullying behaviours during some stage of their school careers. No significant relationship was found to exist between bullying and self-esteem in the grade 8 sample. Self-esteem scores did however vary significantly among the victims, bully-victims and bystanders in the young adult sample. Correlational coefficients confirmed that there was a significant relationship between previous chronic bullying at school and the total self-esteem scores of participants in the young adult sample. Findings also showed that there was no significant relationship between bullying and attachment in either of the samples in this study. Finally, qualitative results revealed that a number of contextual factors influenced the outcomes of chronic bullying at school for the sub-set of young adult victims. These factors included: The nature, frequency and duration of the bullying behaviour, the victims’ social support at the time as well as the victims’ personal characteristics.
- Full Text:
- Date Issued: 2009
- Authors: Darney, Christine Kyle
- Date: 2009
- Subjects: Bullying -- South Africa -- Psychological aspects , Bullying in schools -- South Africa -- Prevention
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9885 , http://hdl.handle.net/10948/1214 , Bullying -- South Africa -- Psychological aspects , Bullying in schools -- South Africa -- Prevention
- Description: Bullying behaviour is fast becoming a common feature in schools around the world. It is a practice that provokes concern, as it infringes upon the child’s right to human dignity, privacy, freedom and security. The physical, emotional and educational consequences of bullying behaviour can never be underestimated (Oyaziwo, 2008). Limited research has been conducted in South Africa regarding the prevalence and possible long-term effects of chronic bullying at school. This study intended to explore and describe the prevalence of bullying behaviour among a sample of grade 8 learners and the prevalence of previous chronic bullying at school among a sample of young adults in the Nelson Mandela Metropole. In addition, the study aimed to explore and describe the relationship between chronic bullying at school and self-esteem and attachment styles. Finally, the contextual factors which may influence the outcomes of chronic bullying for victims were explored and described. The study was exploratory descriptive in nature and employed a mixed method research design. Participants were selected by means of non-probability sampling. The sample consisted of 225 grade 8 learners at a secondary school in the Nelson Mandela Metropole and 101 young adult participants who had completed their school education in the Nelson Mandela Metropole within the past sixteen years. Data on the demographics of the sample was gathered through the administration of a biographical questionnaire. Furthermore, the Olweus (1996) Bully/Victim Questionnaire was utilized in order to obtain information about the prevalence of bullying behaviours among the participants. James Battle’s (1981) Culture-Free Self-Esteem Inventories were used to measure the construct of self-esteem, and Bartholomew and Horowitz’ (1991) Relationship Questionnaire was employed in order to identify the participants’ current attachment styles. Individual semi-structured interviews were later conducted among a sub-set of young adult participants, who had experienced chronic bullying at school, in order to identify the contextual factors which may have influenced the xiii outcomes of their experiences of victimization. Descriptive and inferential statistics, including correlations and multivariate analysis of variance (ANOVA), were utilized in order to analyze the quantitative data. Key findings revealed that eighty-five percent of the grade 8 participants had been involved in bullying behaviours at school this year and ninety-one percent of the young adult participants had been involved in bullying behaviours during some stage of their school careers. No significant relationship was found to exist between bullying and self-esteem in the grade 8 sample. Self-esteem scores did however vary significantly among the victims, bully-victims and bystanders in the young adult sample. Correlational coefficients confirmed that there was a significant relationship between previous chronic bullying at school and the total self-esteem scores of participants in the young adult sample. Findings also showed that there was no significant relationship between bullying and attachment in either of the samples in this study. Finally, qualitative results revealed that a number of contextual factors influenced the outcomes of chronic bullying at school for the sub-set of young adult victims. These factors included: The nature, frequency and duration of the bullying behaviour, the victims’ social support at the time as well as the victims’ personal characteristics.
- Full Text:
- Date Issued: 2009