Beneficial effects of medicinal plants in fish diseases
- Stratev, Deyan, Zhelyazkov, Georgi, Noundou, Xavier Siwe, Krause, Rui W M
- Authors: Stratev, Deyan , Zhelyazkov, Georgi , Noundou, Xavier Siwe , Krause, Rui W M
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123487 , vital:35447 , https://doi.org/10.1007/s10499-017-0219-x
- Description: Fish are constantly in contact with pathogens inhabiting water. High population density as well as poor hydrodynamic conditions and feeding lead to an increased sensitivity towards infections. In order to prevent major economic losses due to diseases, various medications are used for treatment and prevention of infections. The use of antimicrobial drugs in aquacultures could lead to emergence of resistance in pathogenic microorganisms. Alternatives are being sought over the last few years to replace antibiotics, and medicinal plants are one of available options for this purpose. These plants are rich in secondary metabolites and phytochemical compounds, which have an effect against viral, bacterial, and parasitic diseases in fish. Their main advantage is their natural origin and most of these plants do not represent threat for human health, the fish, and the environment. The goal of this review is to present information on the treatment of viral, bacterial, and parasitic diseases in fish through medicinal plants, with focus on the mechanisms of action of the identified secondary metabolites, fractions, or plant extracts.
- Full Text:
- Date Issued: 2008
- Authors: Stratev, Deyan , Zhelyazkov, Georgi , Noundou, Xavier Siwe , Krause, Rui W M
- Date: 2008
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123487 , vital:35447 , https://doi.org/10.1007/s10499-017-0219-x
- Description: Fish are constantly in contact with pathogens inhabiting water. High population density as well as poor hydrodynamic conditions and feeding lead to an increased sensitivity towards infections. In order to prevent major economic losses due to diseases, various medications are used for treatment and prevention of infections. The use of antimicrobial drugs in aquacultures could lead to emergence of resistance in pathogenic microorganisms. Alternatives are being sought over the last few years to replace antibiotics, and medicinal plants are one of available options for this purpose. These plants are rich in secondary metabolites and phytochemical compounds, which have an effect against viral, bacterial, and parasitic diseases in fish. Their main advantage is their natural origin and most of these plants do not represent threat for human health, the fish, and the environment. The goal of this review is to present information on the treatment of viral, bacterial, and parasitic diseases in fish through medicinal plants, with focus on the mechanisms of action of the identified secondary metabolites, fractions, or plant extracts.
- Full Text:
- Date Issued: 2008
The African reception of global media:
- Strelitz, Larry N, Boshoff, Priscilla A
- Authors: Strelitz, Larry N , Boshoff, Priscilla A
- Date: 2008
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/143527 , vital:38254 , ISBN 9781473971752 , https://books.google.co.za/books?id=pfRcCwAAQBAJanddq=The+African+Reception+of+Global+Mediaandlr=andsource=gbs_navlinks_s
- Description: This chapter engages debates concerning the impact of global media on local youth audiences in Africa. Recognizing the profound rootedness of media consumption in everyday life, the chapter specifically examines the way selected South African youth audiences, differentially embedded in their particular economic and ideological formations, use local and global media texts as part of their ongoing attempts to make sense of their lives.
- Full Text:
- Date Issued: 2008
- Authors: Strelitz, Larry N , Boshoff, Priscilla A
- Date: 2008
- Language: English
- Type: text , book
- Identifier: http://hdl.handle.net/10962/143527 , vital:38254 , ISBN 9781473971752 , https://books.google.co.za/books?id=pfRcCwAAQBAJanddq=The+African+Reception+of+Global+Mediaandlr=andsource=gbs_navlinks_s
- Description: This chapter engages debates concerning the impact of global media on local youth audiences in Africa. Recognizing the profound rootedness of media consumption in everyday life, the chapter specifically examines the way selected South African youth audiences, differentially embedded in their particular economic and ideological formations, use local and global media texts as part of their ongoing attempts to make sense of their lives.
- Full Text:
- Date Issued: 2008
Media consumption and everyday life
- Authors: Strelitz, Larry N
- Date: 2008
- Language: English
- Type: text , Conference paper
- Identifier: vital:6324 , http://hdl.handle.net/10962/d1008550
- Description: I see this inaugural lecture as an opportunity to trace my journey into the field of media studies, showing how significant youthful experiences with the media set me off on my particular research trajectory. In this address I will use the umbrella term ‘mass media’ to cover both the traditional news media as well as forms of popular culture such as soap operas, popular music and so on. Sometimes we use the terms ‘popular culture’ and ‘mass media’ interchangeably as they both constitute the cultural life of ordinary people.
- Full Text:
- Date Issued: 2008
- Authors: Strelitz, Larry N
- Date: 2008
- Language: English
- Type: text , Conference paper
- Identifier: vital:6324 , http://hdl.handle.net/10962/d1008550
- Description: I see this inaugural lecture as an opportunity to trace my journey into the field of media studies, showing how significant youthful experiences with the media set me off on my particular research trajectory. In this address I will use the umbrella term ‘mass media’ to cover both the traditional news media as well as forms of popular culture such as soap operas, popular music and so on. Sometimes we use the terms ‘popular culture’ and ‘mass media’ interchangeably as they both constitute the cultural life of ordinary people.
- Full Text:
- Date Issued: 2008
Constructions of masculinity in young men's narratives of violence in the homeplace
- Authors: Stride, Lorenzo
- Date: 2008
- Subjects: Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11847 , http://hdl.handle.net/10353/185 , Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Description: This research was undertaken with a view to advancing scholarship on the production and reproduction of notions of masculinity through everyday experiences of violence in the domestic sphere. In particular, the researcher sought to explicate constructions of masculinity in men’s narratives of their experiences of violence in the homeplace. The participants in this study constituted a fairly homogenous sample in terms of age, education, geographic location, and socio-economic status. A homogenous sample was purposefully selected because it aided an analysis of the phenomenon under study without diversions from extraneous variables. Data was collected from semi-structured, personal, in-depth, face-to-face interviews with eight young men. In these interviews participants were asked to recall and to talk about one particular experience of domestic violence that they witnessed or that had happened to them in the past. Photo elicitation was used as a reflective technique aimed at facilitating recall and discussion during the interviews. Data was analysed by means of a discourse analysis. The main findings of this research were that the participants grew up in communities where a more traditional hegemonic masculinity was commonplace and where violence as a means of exerting control was associated with being a ‘real man’. The participants did however question this notion of masculinity as a result of their experiences, particularly when they perceived the violence that they had been exposed to as excessive or unwarranted.
- Full Text:
- Date Issued: 2008
- Authors: Stride, Lorenzo
- Date: 2008
- Subjects: Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Language: English
- Type: Thesis , Masters , M Soc Sc (C Psy)
- Identifier: vital:11847 , http://hdl.handle.net/10353/185 , Family violence , Masculinity , Men -- Identity , Men -- Psychology
- Description: This research was undertaken with a view to advancing scholarship on the production and reproduction of notions of masculinity through everyday experiences of violence in the domestic sphere. In particular, the researcher sought to explicate constructions of masculinity in men’s narratives of their experiences of violence in the homeplace. The participants in this study constituted a fairly homogenous sample in terms of age, education, geographic location, and socio-economic status. A homogenous sample was purposefully selected because it aided an analysis of the phenomenon under study without diversions from extraneous variables. Data was collected from semi-structured, personal, in-depth, face-to-face interviews with eight young men. In these interviews participants were asked to recall and to talk about one particular experience of domestic violence that they witnessed or that had happened to them in the past. Photo elicitation was used as a reflective technique aimed at facilitating recall and discussion during the interviews. Data was analysed by means of a discourse analysis. The main findings of this research were that the participants grew up in communities where a more traditional hegemonic masculinity was commonplace and where violence as a means of exerting control was associated with being a ‘real man’. The participants did however question this notion of masculinity as a result of their experiences, particularly when they perceived the violence that they had been exposed to as excessive or unwarranted.
- Full Text:
- Date Issued: 2008
Fungal remediation of winery and distillery wastewaters using Trametes pubescens MB 89 and the enhanced production of a high-value enzyme therein
- Authors: Strong, Peter James
- Date: 2008
- Subjects: Fungal remediation Distilleries -- Waste disposal Wine and wine making -- Waste disposal Bioremediation Laccase Enzymes -- Biotechnology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3932 , http://hdl.handle.net/10962/d1003991
- Description: In this study white-rot fungi were investigated for their efficiency at distillery wastewater remediation and the production of laccase as a valuable by-product. Distillery wastewaters are high in organic load and low in pH. The presence of phenolic compounds can lead to extremely colour-rich wastewaters and can be toxic to microorganisms. The presence of the inorganic ions may also affect biological treatment. White-rot fungi are unique among eukaryotic or prokaryotic microbes in possessing powerful oxidative enzyme systems that can degrade lignin to carbon dioxide. These ligninolytic enzymes, such as lignin peroxidase, manganese peroxidase and laccase, are capable of degrading a vast range of toxic, recalcitrant environmental pollutants and this makes the white-rot fungi strong candidates for the bioremediation of polluted soils and waters. The laccase enzyme alone has shown remediation potential in wastewaters such as beer production effluent, olive mill wastewater, alcohol distillery wastes, dye-containing wastewaters from the textile industry as well as wastewaters from the paper and pulp industry. It has been shown to be capable of remediating soils and waters polluted with chlorinated phenolic compounds, polyaromatic hydrocarbons, nitrosubstituted compounds and fungicides, herbicides and insecticides.
- Full Text:
- Date Issued: 2008
- Authors: Strong, Peter James
- Date: 2008
- Subjects: Fungal remediation Distilleries -- Waste disposal Wine and wine making -- Waste disposal Bioremediation Laccase Enzymes -- Biotechnology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3932 , http://hdl.handle.net/10962/d1003991
- Description: In this study white-rot fungi were investigated for their efficiency at distillery wastewater remediation and the production of laccase as a valuable by-product. Distillery wastewaters are high in organic load and low in pH. The presence of phenolic compounds can lead to extremely colour-rich wastewaters and can be toxic to microorganisms. The presence of the inorganic ions may also affect biological treatment. White-rot fungi are unique among eukaryotic or prokaryotic microbes in possessing powerful oxidative enzyme systems that can degrade lignin to carbon dioxide. These ligninolytic enzymes, such as lignin peroxidase, manganese peroxidase and laccase, are capable of degrading a vast range of toxic, recalcitrant environmental pollutants and this makes the white-rot fungi strong candidates for the bioremediation of polluted soils and waters. The laccase enzyme alone has shown remediation potential in wastewaters such as beer production effluent, olive mill wastewater, alcohol distillery wastes, dye-containing wastewaters from the textile industry as well as wastewaters from the paper and pulp industry. It has been shown to be capable of remediating soils and waters polluted with chlorinated phenolic compounds, polyaromatic hydrocarbons, nitrosubstituted compounds and fungicides, herbicides and insecticides.
- Full Text:
- Date Issued: 2008
Pilates for postural stability in computer users
- Authors: Strydom, Lana
- Date: 2008
- Subjects: Pilates method , Human beings -- Attitude and movement
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10094 , http://hdl.handle.net/10948/867 , Pilates method , Human beings -- Attitude and movement
- Description: The impact of computer use is evident in every day life (Harrington, Carter, Birrell and Gompertz, 2000:264). Lind (2002:18) explains that global trends continue to show that the most severe work-related health problems that exist amongst computer users are musculoskeletal disorders. As technology has lead to increases in automation, so it has lead to increases in work-related illnesses. Although studies have explored the effects of ergonomics (Thibodeau, 1995:322) in static working positions there has been little evidence supporting a solution in overcoming poor occupational postures. Many health practitioners argue that occupationally caused, or aggravated, musculoskeletal disorders are steadily increasing. Thus, even though computers have improved productivity and made work easier for the population in general, they have adverse effects as well. Designing the proper tools or a setup of the work place is of prime importance for the elimination of chronic diseases attributed to sedentary lifestyles. Regular physical activity had long been regarded as an important component of a healthy lifestyle. This notion has recently been reinforced by scientific evidence linking regular physical activity with a wide array of physical and mental health benefits, synonymous with an improvement in wellness (Pratt, Macera, and Wang, 2000:63). According to Pratt et al. (2000:63) higher direct medical costs associates with physical inactivity. Further cross-sectional epidemiologic studies and controlled experimental investigations conducted by Okura, Nakata and Tanaka (2003:1131) had demonstrated that physically active adults, in contrast to their sedentary counterparts, tend to develop and maintain higher levels of physical fitness. These studies had not only demonstrated the positive results of physical activity, such as an improvement in blood lipid profile, body composition, glucose tolerance and insulin sensitivity, but had also shown that participation in such activity decreased the risk of developing several chronic hypokinetic diseases, including coronary heart disease (CHD), hypertension, non-insulin dependant diabetes mellitus (type II), osteoporosis, colon cancer, anxiety and depression. In addition, low levels of habitual physical activity and the subsequent low levels of physical fitness were associated with a marked increase in all-cause mortality rates. Okura et al. (2003:1131) confirm that effects of exercise intensity on physical fitness and risk factors for coronary Herat disease.
- Full Text:
- Date Issued: 2008
- Authors: Strydom, Lana
- Date: 2008
- Subjects: Pilates method , Human beings -- Attitude and movement
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:10094 , http://hdl.handle.net/10948/867 , Pilates method , Human beings -- Attitude and movement
- Description: The impact of computer use is evident in every day life (Harrington, Carter, Birrell and Gompertz, 2000:264). Lind (2002:18) explains that global trends continue to show that the most severe work-related health problems that exist amongst computer users are musculoskeletal disorders. As technology has lead to increases in automation, so it has lead to increases in work-related illnesses. Although studies have explored the effects of ergonomics (Thibodeau, 1995:322) in static working positions there has been little evidence supporting a solution in overcoming poor occupational postures. Many health practitioners argue that occupationally caused, or aggravated, musculoskeletal disorders are steadily increasing. Thus, even though computers have improved productivity and made work easier for the population in general, they have adverse effects as well. Designing the proper tools or a setup of the work place is of prime importance for the elimination of chronic diseases attributed to sedentary lifestyles. Regular physical activity had long been regarded as an important component of a healthy lifestyle. This notion has recently been reinforced by scientific evidence linking regular physical activity with a wide array of physical and mental health benefits, synonymous with an improvement in wellness (Pratt, Macera, and Wang, 2000:63). According to Pratt et al. (2000:63) higher direct medical costs associates with physical inactivity. Further cross-sectional epidemiologic studies and controlled experimental investigations conducted by Okura, Nakata and Tanaka (2003:1131) had demonstrated that physically active adults, in contrast to their sedentary counterparts, tend to develop and maintain higher levels of physical fitness. These studies had not only demonstrated the positive results of physical activity, such as an improvement in blood lipid profile, body composition, glucose tolerance and insulin sensitivity, but had also shown that participation in such activity decreased the risk of developing several chronic hypokinetic diseases, including coronary heart disease (CHD), hypertension, non-insulin dependant diabetes mellitus (type II), osteoporosis, colon cancer, anxiety and depression. In addition, low levels of habitual physical activity and the subsequent low levels of physical fitness were associated with a marked increase in all-cause mortality rates. Okura et al. (2003:1131) confirm that effects of exercise intensity on physical fitness and risk factors for coronary Herat disease.
- Full Text:
- Date Issued: 2008
Life history, population dynamics and conservation status of Oldenburgia grandis (Asteraceae), an endemic of the Eastern Cape of South Africa
- Authors: Swart, Carin
- Date: 2008
- Subjects: Compositae , Fynbos ecology -- South Africa -- Eastern Cape , Endemic plants -- South Africa -- Eastern Cape , Rare plants -- South Africa -- Eastern Cape , Plant populations -- South Africa -- Eastern Cape , Vegetation dynamics -- South Africa -- Eastern Cape , Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4230 , http://hdl.handle.net/10962/d1003799 , Compositae , Fynbos ecology -- South Africa -- Eastern Cape , Endemic plants -- South Africa -- Eastern Cape , Rare plants -- South Africa -- Eastern Cape , Plant populations -- South Africa -- Eastern Cape , Vegetation dynamics -- South Africa -- Eastern Cape , Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa -- Eastern Cape
- Description: Oldenburgia grandis is a rare, long-lived woody paleoendemic of the Fynbos Biome of South Africa. Confined to quartzite outcrops, it has a small geographic range and narrow habitat specificity. O. grandis responds to its fire-prone environment by resprouting. Elasticity analysis of O. grandis reveals that growth and fecundity were traded off for persistence of adult, mature and sapling stages. Morphological adaptations such as a corky fire-resistant bark and the ability to resprout after fire are traits that O. grandis have evolved to persist in a frequently disturbed environment. Population growth rate for sites undisturbed by fire for a number of years (l = 1.01) and sites at various stages of recovery after fire (l = 1.00) were very similar. The highest variation in transition probabilities for all sites was seen in the persistence of the seedling stage and growth from seedling to sapling. Observed population structure and stable stage distribution determined by the matrix model show that sites recently undisturbed by fire had high abundances of the adult and sapling stages. A peak in sapling stages was seen for the stable stage distribution where similar peak in sapling numbers were seen for population structures of sites at various stages of recoveryafter fire. Favourable environmental conditions for the persistence of O. grandis populations include no fire with transition probabilities between the observed minimum and maximum and fire frequency at a 10 year interval where seedling protection from the fire is high and adult and mature mortalities during the fire are low. Stochastic environmental events that could put populations (particularly small populations) at an increased risk of extinction include high to moderate fire intensities where seedling protection from the fire is low and adult and mature mortalities are high as a result of the fire.
- Full Text:
- Date Issued: 2008
- Authors: Swart, Carin
- Date: 2008
- Subjects: Compositae , Fynbos ecology -- South Africa -- Eastern Cape , Endemic plants -- South Africa -- Eastern Cape , Rare plants -- South Africa -- Eastern Cape , Plant populations -- South Africa -- Eastern Cape , Vegetation dynamics -- South Africa -- Eastern Cape , Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4230 , http://hdl.handle.net/10962/d1003799 , Compositae , Fynbos ecology -- South Africa -- Eastern Cape , Endemic plants -- South Africa -- Eastern Cape , Rare plants -- South Africa -- Eastern Cape , Plant populations -- South Africa -- Eastern Cape , Vegetation dynamics -- South Africa -- Eastern Cape , Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa -- Eastern Cape
- Description: Oldenburgia grandis is a rare, long-lived woody paleoendemic of the Fynbos Biome of South Africa. Confined to quartzite outcrops, it has a small geographic range and narrow habitat specificity. O. grandis responds to its fire-prone environment by resprouting. Elasticity analysis of O. grandis reveals that growth and fecundity were traded off for persistence of adult, mature and sapling stages. Morphological adaptations such as a corky fire-resistant bark and the ability to resprout after fire are traits that O. grandis have evolved to persist in a frequently disturbed environment. Population growth rate for sites undisturbed by fire for a number of years (l = 1.01) and sites at various stages of recovery after fire (l = 1.00) were very similar. The highest variation in transition probabilities for all sites was seen in the persistence of the seedling stage and growth from seedling to sapling. Observed population structure and stable stage distribution determined by the matrix model show that sites recently undisturbed by fire had high abundances of the adult and sapling stages. A peak in sapling stages was seen for the stable stage distribution where similar peak in sapling numbers were seen for population structures of sites at various stages of recoveryafter fire. Favourable environmental conditions for the persistence of O. grandis populations include no fire with transition probabilities between the observed minimum and maximum and fire frequency at a 10 year interval where seedling protection from the fire is high and adult and mature mortalities during the fire are low. Stochastic environmental events that could put populations (particularly small populations) at an increased risk of extinction include high to moderate fire intensities where seedling protection from the fire is low and adult and mature mortalities are high as a result of the fire.
- Full Text:
- Date Issued: 2008
Contextual obstacles to the delivery of effective psychological treatment of PTSD in a South African community setting
- Authors: Swartz, Kerry
- Date: 2008
- Subjects: Post-traumatic stress disorder -- Treatment -- South Africa Rape victims -- Counseling of -- South Africa Psychic trauma -- Treatment HIV infections -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3068 , http://hdl.handle.net/10962/d1002577
- Description: The present study presents three individual cases; all three clients had endured a traumatic event, namely rape, and all three met the criteria for PTSD. Despite the fact that each of the clients was initially assessed as being a suitable candidate for psychological treatment, none of the cases proceeded to the therapy phase of treatment. A number of obstacles, both personal and contextual, were encountered during treatment implementation, preventing or limiting a successful outcome of psychological treatment in each case. An examination of these cases highlights a few of the many obstacles frequently faced when delivering psychological treatment to the South African context. In so doing, this research provides an opportunity to consider the possible reasons for the limited documentation of treatment efficacy within the South African context, as well as to enhance our understanding of and sensitivity towards the cultural and contextual factors playing a role in psychological treatment.
- Full Text:
- Date Issued: 2008
- Authors: Swartz, Kerry
- Date: 2008
- Subjects: Post-traumatic stress disorder -- Treatment -- South Africa Rape victims -- Counseling of -- South Africa Psychic trauma -- Treatment HIV infections -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3068 , http://hdl.handle.net/10962/d1002577
- Description: The present study presents three individual cases; all three clients had endured a traumatic event, namely rape, and all three met the criteria for PTSD. Despite the fact that each of the clients was initially assessed as being a suitable candidate for psychological treatment, none of the cases proceeded to the therapy phase of treatment. A number of obstacles, both personal and contextual, were encountered during treatment implementation, preventing or limiting a successful outcome of psychological treatment in each case. An examination of these cases highlights a few of the many obstacles frequently faced when delivering psychological treatment to the South African context. In so doing, this research provides an opportunity to consider the possible reasons for the limited documentation of treatment efficacy within the South African context, as well as to enhance our understanding of and sensitivity towards the cultural and contextual factors playing a role in psychological treatment.
- Full Text:
- Date Issued: 2008
The Postcolonial heart of African philosophy
- Authors: Tabensky, Pedro
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/305762 , vital:58610 , xlink:href="https://hdl.handle.net/10520/EJC96056"
- Description: This piece is one of among a handful that seek in the first instance to reveal the origin of African philosophy as an academic discipline, the source of its unity and distinctiveness. The discipline of African philosophy originates in tragedy, out of pain, confusion and rage stemming from colonial destruction; destruction that is responsible for what Fanon calls the ‘negro neurosis’ caused by what Biko would describe as the unbearable fusion of colonised and coloniser. I argue that the birth of African philosophy as an academic discipline is largely responsible for its character and, crucially, for its distinctive creative possibilities.
- Full Text:
- Date Issued: 2008
- Authors: Tabensky, Pedro
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/305762 , vital:58610 , xlink:href="https://hdl.handle.net/10520/EJC96056"
- Description: This piece is one of among a handful that seek in the first instance to reveal the origin of African philosophy as an academic discipline, the source of its unity and distinctiveness. The discipline of African philosophy originates in tragedy, out of pain, confusion and rage stemming from colonial destruction; destruction that is responsible for what Fanon calls the ‘negro neurosis’ caused by what Biko would describe as the unbearable fusion of colonised and coloniser. I argue that the birth of African philosophy as an academic discipline is largely responsible for its character and, crucially, for its distinctive creative possibilities.
- Full Text:
- Date Issued: 2008
Corporeal identification in selected works by Berni Searle
- Authors: Taggart, Emma
- Date: 2008
- Subjects: Searle, Berni Lacan, Jacques, 1901-1981 -- Criticism and interpretation Merleau-Ponty, Maurice, 1908-1961 -- Criticism and interpretation Women artists -- South Africa Body art -- South Africa Self-portraits
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2434 , http://hdl.handle.net/10962/d1004576
- Description: Through a detailed analysis of a selection of works produced between 1999 and 2003 by the South African artist Berni Searle, this thesis explores the need to theorise a corporeal viewer in the process of interpreting art works. Such an approach is particularly necessary when dealing with an artist such as Searle because her work, which deals predominantly with the theme of identity, appeals not only to conceptual but also to experiential and corporeal understandings of identity. Searle incorporates the viewer into an experience of her own identity through a physical identification that the viewer feels in relation to her work. For viewers this means that they are made aware of how their own identity in the moment of interpretation is contingent on visual, mental and physical components. In order to develop this argument the work of psychoanalyst Jacques Lacan and the phenomenologist Maurice Merleau-Ponty is drawn on. These two theorists are very useful for an argument of this nature because both interpret identity as a construction involving an enfolding between the mind and, via the act of vision, the body of the subject. Through an inclusion of the corporeal element in interpretation, this thesis also offers a critique of interpretive theories that would reduce analysis to an interaction between eye and mind by analyzing how the viewer's body participates in the act of looking.
- Full Text:
- Date Issued: 2008
- Authors: Taggart, Emma
- Date: 2008
- Subjects: Searle, Berni Lacan, Jacques, 1901-1981 -- Criticism and interpretation Merleau-Ponty, Maurice, 1908-1961 -- Criticism and interpretation Women artists -- South Africa Body art -- South Africa Self-portraits
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2434 , http://hdl.handle.net/10962/d1004576
- Description: Through a detailed analysis of a selection of works produced between 1999 and 2003 by the South African artist Berni Searle, this thesis explores the need to theorise a corporeal viewer in the process of interpreting art works. Such an approach is particularly necessary when dealing with an artist such as Searle because her work, which deals predominantly with the theme of identity, appeals not only to conceptual but also to experiential and corporeal understandings of identity. Searle incorporates the viewer into an experience of her own identity through a physical identification that the viewer feels in relation to her work. For viewers this means that they are made aware of how their own identity in the moment of interpretation is contingent on visual, mental and physical components. In order to develop this argument the work of psychoanalyst Jacques Lacan and the phenomenologist Maurice Merleau-Ponty is drawn on. These two theorists are very useful for an argument of this nature because both interpret identity as a construction involving an enfolding between the mind and, via the act of vision, the body of the subject. Through an inclusion of the corporeal element in interpretation, this thesis also offers a critique of interpretive theories that would reduce analysis to an interaction between eye and mind by analyzing how the viewer's body participates in the act of looking.
- Full Text:
- Date Issued: 2008
The distinction between tax evasion, tax avoidance and tax planning
- Authors: Tarrant, Greg
- Date: 2008
- Subjects: South African Revenue Service , Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- South Africa , Income tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:897 , http://hdl.handle.net/10962/d1004549
- Description: Tax avoidance has been the subject of intense scrutiny lately by both the South African Revenue Service ("the SARS") and the media. This attention stems largely from the recent withdrawal of section 103(1) together with the introduction of section 80A to 80L of the South African Income Tax Act. However, this attention is not limited to South Africa. Revenue authorities worldwide have focused on the task of challenging tax avoidance. The approach of the SARS to tackling tax avoidance has been multi-faceted. In the Discussion Paper on Tax Avoidance and Section 103 (1) of the South African Income Tax Act they begin with a review of the distinction between tax evasion, tax avoidance and tax planning. Following a call for comment the SARS issued an Interim Response followed by the Revised Proposals which culminated in the withdrawal of the longstanding general anti-avoidance rules housed in section 103(1) and the introduction of new and more comprehensive anti-avoidance rules. In addition, the SARS has adopted an ongoing media campaign stressing the importance of paying tax in a country with a large development agenda like that of South Africa, the need for taxpayers to adopt a responsible attitude to the management of tax and the inclusion of responsible tax management as the greatest measure of a taxpayer's corporate and social investment. In tandem with this message the SARS have sought to vilify those taxpayers who engage in tax avoidance. The message is clear: tax avoidance carries reputational risks; those who engage in tax avoidance are unpatriotic or immoral and their actions simply result in an unfair shifting of the tax burden. The SARS is not alone in the above approach. Around the world tax authorities have been echoing the same message. The message appears to be working. Accounting firms speak of a "creeping conservatism" that has pervaded company boardrooms. What is not clear, however, is whether taxpayers, in becoming more conservative, are simply more fully aware of tax risks and are making informed decisions or whether they are simply responding to external events, such as the worldwide focus by revenue authorities and the media on tax avoidance. Whatever the reason, it is now critical, particularly in the case of corporate taxpayers, that their policies for tax and its attendant risks need to be as sophisticated, coherent and transparent as its policies in all other areas involving multiple stakeholders, such as suppliers, customers, staff and investors. How does a company begin to set its tax philosophy and strategic direction or to determine its appetite for risk? A starting point, it is submitted would be a review of the distinction between tax evasion, avoidance and planning with a heightened sensitivity to the unfamiliar ethical, moral and social risks. The goal of this thesis was to clearly define the distinction between tax evasion, tax avoidance and tax planning from a legal interpretive, ethical and historical perspective in order to develop a rudimentary framework for the responsible management of strategic tax decisions, in the light of the new South African general anti-avoidance legislation. The research methodology entails a qualitative research orientation consisting of a critical conceptual analysis of tax evasion and tax avoidance, with a view to establishing a basic framework to be used by taxpayers to make informed decisions on tax matters. The analysis of the distinction in this work culminated in a diagrammatic representation of the distinction between tax evasion, tax avoidance and tax planning emphasising the different types of tax avoidance from least aggressive to the most abusive and from the least objectionable to most objectionable. It is anticipated that a visual representation of the distinction, however flawed, would result in a far more pragmatic tool to taxpayers than a lengthy document. From a glance taxpayers can determine the following: That tax avoidance is legal; that different forms of tax avoidance exist, some forms being more aggressive than others; that aggressive forms of tax avoidance carry reputational risks; and that in certain circumstances aggressive tax avoidance schemes may border on tax evasion. This, it is envisaged, may prompt taxpayers to ask the right questions when faced with an external or in-house tax avoidance arrangement rather than simply blindly accepting or rejecting the arrangement.
- Full Text:
- Date Issued: 2008
- Authors: Tarrant, Greg
- Date: 2008
- Subjects: South African Revenue Service , Tax evasion -- South Africa , Tax planning -- South Africa , Income tax -- South Africa , Income tax -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:897 , http://hdl.handle.net/10962/d1004549
- Description: Tax avoidance has been the subject of intense scrutiny lately by both the South African Revenue Service ("the SARS") and the media. This attention stems largely from the recent withdrawal of section 103(1) together with the introduction of section 80A to 80L of the South African Income Tax Act. However, this attention is not limited to South Africa. Revenue authorities worldwide have focused on the task of challenging tax avoidance. The approach of the SARS to tackling tax avoidance has been multi-faceted. In the Discussion Paper on Tax Avoidance and Section 103 (1) of the South African Income Tax Act they begin with a review of the distinction between tax evasion, tax avoidance and tax planning. Following a call for comment the SARS issued an Interim Response followed by the Revised Proposals which culminated in the withdrawal of the longstanding general anti-avoidance rules housed in section 103(1) and the introduction of new and more comprehensive anti-avoidance rules. In addition, the SARS has adopted an ongoing media campaign stressing the importance of paying tax in a country with a large development agenda like that of South Africa, the need for taxpayers to adopt a responsible attitude to the management of tax and the inclusion of responsible tax management as the greatest measure of a taxpayer's corporate and social investment. In tandem with this message the SARS have sought to vilify those taxpayers who engage in tax avoidance. The message is clear: tax avoidance carries reputational risks; those who engage in tax avoidance are unpatriotic or immoral and their actions simply result in an unfair shifting of the tax burden. The SARS is not alone in the above approach. Around the world tax authorities have been echoing the same message. The message appears to be working. Accounting firms speak of a "creeping conservatism" that has pervaded company boardrooms. What is not clear, however, is whether taxpayers, in becoming more conservative, are simply more fully aware of tax risks and are making informed decisions or whether they are simply responding to external events, such as the worldwide focus by revenue authorities and the media on tax avoidance. Whatever the reason, it is now critical, particularly in the case of corporate taxpayers, that their policies for tax and its attendant risks need to be as sophisticated, coherent and transparent as its policies in all other areas involving multiple stakeholders, such as suppliers, customers, staff and investors. How does a company begin to set its tax philosophy and strategic direction or to determine its appetite for risk? A starting point, it is submitted would be a review of the distinction between tax evasion, avoidance and planning with a heightened sensitivity to the unfamiliar ethical, moral and social risks. The goal of this thesis was to clearly define the distinction between tax evasion, tax avoidance and tax planning from a legal interpretive, ethical and historical perspective in order to develop a rudimentary framework for the responsible management of strategic tax decisions, in the light of the new South African general anti-avoidance legislation. The research methodology entails a qualitative research orientation consisting of a critical conceptual analysis of tax evasion and tax avoidance, with a view to establishing a basic framework to be used by taxpayers to make informed decisions on tax matters. The analysis of the distinction in this work culminated in a diagrammatic representation of the distinction between tax evasion, tax avoidance and tax planning emphasising the different types of tax avoidance from least aggressive to the most abusive and from the least objectionable to most objectionable. It is anticipated that a visual representation of the distinction, however flawed, would result in a far more pragmatic tool to taxpayers than a lengthy document. From a glance taxpayers can determine the following: That tax avoidance is legal; that different forms of tax avoidance exist, some forms being more aggressive than others; that aggressive forms of tax avoidance carry reputational risks; and that in certain circumstances aggressive tax avoidance schemes may border on tax evasion. This, it is envisaged, may prompt taxpayers to ask the right questions when faced with an external or in-house tax avoidance arrangement rather than simply blindly accepting or rejecting the arrangement.
- Full Text:
- Date Issued: 2008
Oceanic dispersal barriers, adaptation and larval retention: an interdisciplinary assessment of potential factors maintaining a phylogeographic break between sister lineages of an African prawn
- Teske, Peter R, Papadopoulos, Isabelle, Newman, Brent K, Dworschak, Peter C, McQuaid, Christopher D, Barker, Nigel P
- Authors: Teske, Peter R , Papadopoulos, Isabelle , Newman, Brent K , Dworschak, Peter C , McQuaid, Christopher D , Barker, Nigel P
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6546 , http://hdl.handle.net/10962/d1006002 , http://dx.doi.org/10.1186/1471-2148-8-341
- Description: Background. Genetic breaks separating regional lineages of marine organisms with potentially high broadcasting abilities are generally attributed either to dispersal barriers such as currents or upwelling, or to behavioural strategies promoting self-recruitment. We investigated whether such patterns could potentially also be explained by adaptations to different environmental conditions by studying two morphologically distinguishable genetic lineages of the estuarine mudprawn Upogebia africana across a biogeographic disjunction in south-eastern Africa. The study area encompasses a transition between temperate and subtropical biotas, where the warm, southward-flowing Agulhas Current is deflected away from the coast, and its inshore edge is characterised by intermittent upwelling. To determine how this phylogeographic break is maintained, we estimated gene flow among populations in the region, tested for isolation by distance as an indication of larval retention, and reared larvae of the temperate and subtropical lineages at a range of different temperatures. Results. Of four populations sampled, the two northernmost exclusively included the subtropical lineage, a central population had a mixture of both lineages, and the southernmost estuary had only haplotypes of the temperate lineage. No evidence was found for isolation by distance, and gene flow was bidirectional and of similar magnitude among adjacent populations. In both lineages, the optimum temperature for larval development was at about 23°C, but a clear difference was found at lower temperatures. While larvae of the temperate lineage could complete development at temperatures as low as 12°C, those of the subtropical lineage did not complete development below 17°C. Conclusion. The results indicate that both southward dispersal of the subtropical lineage inshore of the Agulhas Current, and its establishment in the temperate province, may be limited primarily by low water temperatures. There is no evidence that the larvae of the temperate lineage would survive less well in the subtropical province than in their native habitat, and their exclusion from this region may be due to a combination of upwelling, short larval duration with limited dispersal potential near the coast, plus transport away from the coast of larvae that become entrained in the Agulhas Current. This study shows how methods from different fields of research (genetics, physiology, oceanography and morphology) can be combined to study phylogeographic patterns.
- Full Text:
- Date Issued: 2008
- Authors: Teske, Peter R , Papadopoulos, Isabelle , Newman, Brent K , Dworschak, Peter C , McQuaid, Christopher D , Barker, Nigel P
- Date: 2008
- Language: English
- Type: Article
- Identifier: vital:6546 , http://hdl.handle.net/10962/d1006002 , http://dx.doi.org/10.1186/1471-2148-8-341
- Description: Background. Genetic breaks separating regional lineages of marine organisms with potentially high broadcasting abilities are generally attributed either to dispersal barriers such as currents or upwelling, or to behavioural strategies promoting self-recruitment. We investigated whether such patterns could potentially also be explained by adaptations to different environmental conditions by studying two morphologically distinguishable genetic lineages of the estuarine mudprawn Upogebia africana across a biogeographic disjunction in south-eastern Africa. The study area encompasses a transition between temperate and subtropical biotas, where the warm, southward-flowing Agulhas Current is deflected away from the coast, and its inshore edge is characterised by intermittent upwelling. To determine how this phylogeographic break is maintained, we estimated gene flow among populations in the region, tested for isolation by distance as an indication of larval retention, and reared larvae of the temperate and subtropical lineages at a range of different temperatures. Results. Of four populations sampled, the two northernmost exclusively included the subtropical lineage, a central population had a mixture of both lineages, and the southernmost estuary had only haplotypes of the temperate lineage. No evidence was found for isolation by distance, and gene flow was bidirectional and of similar magnitude among adjacent populations. In both lineages, the optimum temperature for larval development was at about 23°C, but a clear difference was found at lower temperatures. While larvae of the temperate lineage could complete development at temperatures as low as 12°C, those of the subtropical lineage did not complete development below 17°C. Conclusion. The results indicate that both southward dispersal of the subtropical lineage inshore of the Agulhas Current, and its establishment in the temperate province, may be limited primarily by low water temperatures. There is no evidence that the larvae of the temperate lineage would survive less well in the subtropical province than in their native habitat, and their exclusion from this region may be due to a combination of upwelling, short larval duration with limited dispersal potential near the coast, plus transport away from the coast of larvae that become entrained in the Agulhas Current. This study shows how methods from different fields of research (genetics, physiology, oceanography and morphology) can be combined to study phylogeographic patterns.
- Full Text:
- Date Issued: 2008
Application of dermal microdialysis and tape stripping methods to determine the bioavailability and/or bioequivalence of topical ketoprofen formulations
- Tettey-Amlalo, Ralph Nii Okai
- Authors: Tettey-Amlalo, Ralph Nii Okai
- Date: 2008
- Subjects: Drugs -- Therapeutic equivalency Transdermal medication High performance liquid chromatography Nonsteroidal anti-inflammatory agents -- Bioavailability Nonsteroidal anti-inflammatory agents -- Effectiveness Nonsteroidal anti-inflammatory agents -- Testing Nonsteroidal anti-inflammatory agents -- Side effects
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3796 , http://hdl.handle.net/10962/d1003274
- Description: The widespread acceptance of topical formulations intended for local and/or regional activity has prompted renewed interest in developing a model to determine the bioavailability of drugs in order to establish bioequivalence as a means of evaluating formulation performance of multisource products and also for use during formulation development. Current in vivo techniques such as blister suction and skin biopsy amongst others used to determine the bioavailability and/or bioequivalence of topical formulations are either too invasive to generate appropriate concentration-time profiles or require large numbers of study subjects thereby making the study expensive and time-consuming. Moreover, there are currently no sampling techniques that can demonstrate dermal bioavailability and/or bioequivalence of topical formulations intended for local and/or regional activity. Dermal microdialysis is a relatively new application of microdialysis that permits continuous monitoring of endogenous and/or exogenous solutes in the interstitial fluid. The technique is involves the implantation of semi-permeable membranes which are perfused with an isotonic medium at extremely slow flow rates and collection of microlitre sample volumes containing diffused drugs. Tape stripping, a relatively older technique, has been extensively used in comparative bioavailability studies of various topical formulations. However, due to shortcomings arising from reproducibility and inter-subject variation amongst others, the published FDA guidance outlining the initial protocol was subsequently withdrawn. The incorporation of transepidermal water loss with tape stripping has garnered renewed interest and has been used for the determination of drug bioavailability from a number of topical formulations. Hence the primary objective of this research is to develop and evaluate microdialysis sampling and tape stripping techniques, including the incorporation of the determination of transepidermal water loss, to assess the dermal bioavailability of ketoprofen from topical gel formulations and to develop models for bioequivalence assessment. A rapid UPLC-MS/MS method with requisite sensitivity for the analysis of samples generated from dermal microdialysis was developed and validated which accommodated the microlitre sample volumes collected. An HPLC-UV method was developed and validated for the analysis of samples generated from the in vitro microdialysis and in vivo tape stripping studies. The work presented herein contributes to a growing body of scientific knowledge seeking to develop a model for the determination of bioequivalence of pharmaceutically equivalent topical formulations intended for local and/or regional activity in human subjects.
- Full Text:
- Date Issued: 2008
- Authors: Tettey-Amlalo, Ralph Nii Okai
- Date: 2008
- Subjects: Drugs -- Therapeutic equivalency Transdermal medication High performance liquid chromatography Nonsteroidal anti-inflammatory agents -- Bioavailability Nonsteroidal anti-inflammatory agents -- Effectiveness Nonsteroidal anti-inflammatory agents -- Testing Nonsteroidal anti-inflammatory agents -- Side effects
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3796 , http://hdl.handle.net/10962/d1003274
- Description: The widespread acceptance of topical formulations intended for local and/or regional activity has prompted renewed interest in developing a model to determine the bioavailability of drugs in order to establish bioequivalence as a means of evaluating formulation performance of multisource products and also for use during formulation development. Current in vivo techniques such as blister suction and skin biopsy amongst others used to determine the bioavailability and/or bioequivalence of topical formulations are either too invasive to generate appropriate concentration-time profiles or require large numbers of study subjects thereby making the study expensive and time-consuming. Moreover, there are currently no sampling techniques that can demonstrate dermal bioavailability and/or bioequivalence of topical formulations intended for local and/or regional activity. Dermal microdialysis is a relatively new application of microdialysis that permits continuous monitoring of endogenous and/or exogenous solutes in the interstitial fluid. The technique is involves the implantation of semi-permeable membranes which are perfused with an isotonic medium at extremely slow flow rates and collection of microlitre sample volumes containing diffused drugs. Tape stripping, a relatively older technique, has been extensively used in comparative bioavailability studies of various topical formulations. However, due to shortcomings arising from reproducibility and inter-subject variation amongst others, the published FDA guidance outlining the initial protocol was subsequently withdrawn. The incorporation of transepidermal water loss with tape stripping has garnered renewed interest and has been used for the determination of drug bioavailability from a number of topical formulations. Hence the primary objective of this research is to develop and evaluate microdialysis sampling and tape stripping techniques, including the incorporation of the determination of transepidermal water loss, to assess the dermal bioavailability of ketoprofen from topical gel formulations and to develop models for bioequivalence assessment. A rapid UPLC-MS/MS method with requisite sensitivity for the analysis of samples generated from dermal microdialysis was developed and validated which accommodated the microlitre sample volumes collected. An HPLC-UV method was developed and validated for the analysis of samples generated from the in vitro microdialysis and in vivo tape stripping studies. The work presented herein contributes to a growing body of scientific knowledge seeking to develop a model for the determination of bioequivalence of pharmaceutically equivalent topical formulations intended for local and/or regional activity in human subjects.
- Full Text:
- Date Issued: 2008
Resilience in families living with a child diagnosed with attention deficit/hyperactivity disorder
- Authors: Theron, Tania
- Date: 2008
- Subjects: Hyperactive children -- Psychological testing , Attention-deficit hyperactivity disorder -- Diagnosis , Attention-deficit-disordered children
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9927 , http://hdl.handle.net/10948/655 , Hyperactive children -- Psychological testing , Attention-deficit hyperactivity disorder -- Diagnosis , Attention-deficit-disordered children
- Description: Attention Deficit/Hyperactivity Disorder (AD/HD) is not a new phenomenon. Researchers have studied children with restless, inattentive and impulsive types of behaviours for over one hundred years. Although the primary distress of AD/HD falls mainly on the child’s shoulders, all family members experience the disorder’s negative effects. While the challenges that families have to face are many, families seem to have the ability to “bounce back” (i.e., they have resilience). There has been limited research to date focusing on the resiliency of families living with children diagnosed with AD/HD. Research on the construct of resilience, and more specifically, family resilience has surged in recent times. However, South African research on family resilience is limited. This study aimed to explore and describe the factors that facilitate adjustment and adaptation in families after a child has been clinically diagnosed with AD/HD. The Resiliency Model of Family Stress, Adjustment and Adaptation, developed by McCubbin and McCubbin (2001) served as a framework to conceptualize the families’ adjustment and adaptation processes. Non-probability purposive sampling was used in order to gain participants for the study. Twenty-two families participated in this study, providing a total of 44 participants. Participants consisted of the caregivers of a family living with a child diagnosed with AD/HD, between the ages of seven and 12. The study was triangular in nature, with an exploratory, descriptive approach. A biographical questionnaire with an open-ended question was used in conjunction with seven other questionnaires to gather data. Descriptive statistics were used to describe the biographical information. Quantitative data were analyzed by means of correlation and regression analysis, and content analysis was used to analyze the qualitative data obtained from the biographical questionnaire. The results of the quantitative analysis indicated six significant positive correlations with the FACI8. These variables were relative and friend support, social support, problem solving and behavioural strategies, family hardiness, family problem-solving communication and family time and routines. The results of the qualitative analysis revealed that social support, adherence to a treatment regime, information and knowledge about AD/HD, a supportive family unit, the caregiver’s acceptance of the disorder as well as communication were the most important strength factors identified. The findings of the research could assist parents in managing their children diagnosed with AD/HD more effectively and has helped create further insight into what resiliency areas they could improve upon. Furthermore, this study could be used as a stepping stone for future research on resilience in families living with a pervasive psychological disorder and will contribute to the broader context of family resilience research in the South African context.
- Full Text:
- Date Issued: 2008
- Authors: Theron, Tania
- Date: 2008
- Subjects: Hyperactive children -- Psychological testing , Attention-deficit hyperactivity disorder -- Diagnosis , Attention-deficit-disordered children
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9927 , http://hdl.handle.net/10948/655 , Hyperactive children -- Psychological testing , Attention-deficit hyperactivity disorder -- Diagnosis , Attention-deficit-disordered children
- Description: Attention Deficit/Hyperactivity Disorder (AD/HD) is not a new phenomenon. Researchers have studied children with restless, inattentive and impulsive types of behaviours for over one hundred years. Although the primary distress of AD/HD falls mainly on the child’s shoulders, all family members experience the disorder’s negative effects. While the challenges that families have to face are many, families seem to have the ability to “bounce back” (i.e., they have resilience). There has been limited research to date focusing on the resiliency of families living with children diagnosed with AD/HD. Research on the construct of resilience, and more specifically, family resilience has surged in recent times. However, South African research on family resilience is limited. This study aimed to explore and describe the factors that facilitate adjustment and adaptation in families after a child has been clinically diagnosed with AD/HD. The Resiliency Model of Family Stress, Adjustment and Adaptation, developed by McCubbin and McCubbin (2001) served as a framework to conceptualize the families’ adjustment and adaptation processes. Non-probability purposive sampling was used in order to gain participants for the study. Twenty-two families participated in this study, providing a total of 44 participants. Participants consisted of the caregivers of a family living with a child diagnosed with AD/HD, between the ages of seven and 12. The study was triangular in nature, with an exploratory, descriptive approach. A biographical questionnaire with an open-ended question was used in conjunction with seven other questionnaires to gather data. Descriptive statistics were used to describe the biographical information. Quantitative data were analyzed by means of correlation and regression analysis, and content analysis was used to analyze the qualitative data obtained from the biographical questionnaire. The results of the quantitative analysis indicated six significant positive correlations with the FACI8. These variables were relative and friend support, social support, problem solving and behavioural strategies, family hardiness, family problem-solving communication and family time and routines. The results of the qualitative analysis revealed that social support, adherence to a treatment regime, information and knowledge about AD/HD, a supportive family unit, the caregiver’s acceptance of the disorder as well as communication were the most important strength factors identified. The findings of the research could assist parents in managing their children diagnosed with AD/HD more effectively and has helped create further insight into what resiliency areas they could improve upon. Furthermore, this study could be used as a stepping stone for future research on resilience in families living with a pervasive psychological disorder and will contribute to the broader context of family resilience research in the South African context.
- Full Text:
- Date Issued: 2008
Transitions towards a knowledge society: Aspectual pre-evaluation of a culture-sensitive implementation framework
- Thinyane, Mamello, Terzoli, Alfredo, Clayton, Peter G
- Authors: Thinyane, Mamello , Terzoli, Alfredo , Clayton, Peter G
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431054 , vital:72741 , https://doi.org/10.1007/978-0-387-09729-9_41
- Description: Information and Communication Technology (ICT) is aiding the transi-tion of society into information society and ultimately knowledge society. Embedded within ICT are the cultural and philosophical undercurrents of the society in which the ICT solutions are developed, currently pre-dominantly the Western culture. The proliferation of ICT is therefore in-advertedly leading to more Westernization of the world. It is important, therefore, that ICT solutions are culture sensitive and flexible enough to be situated within different cultures. To that end, we utilize Herman Dooyeweerd’s Theory of Modal Aspects to analyze a framework we has developed for implementation of locally situated knowledge based systems, to determine its efficacy in addressing the different modal as-pects, which make up the total experience and cultural expressiveness of societies.
- Full Text:
- Date Issued: 2008
- Authors: Thinyane, Mamello , Terzoli, Alfredo , Clayton, Peter G
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431054 , vital:72741 , https://doi.org/10.1007/978-0-387-09729-9_41
- Description: Information and Communication Technology (ICT) is aiding the transi-tion of society into information society and ultimately knowledge society. Embedded within ICT are the cultural and philosophical undercurrents of the society in which the ICT solutions are developed, currently pre-dominantly the Western culture. The proliferation of ICT is therefore in-advertedly leading to more Westernization of the world. It is important, therefore, that ICT solutions are culture sensitive and flexible enough to be situated within different cultures. To that end, we utilize Herman Dooyeweerd’s Theory of Modal Aspects to analyze a framework we has developed for implementation of locally situated knowledge based systems, to determine its efficacy in addressing the different modal as-pects, which make up the total experience and cultural expressiveness of societies.
- Full Text:
- Date Issued: 2008
The Internet in rural communities: unrestricted and contextualized
- Thinyane, Mamello, Dalvit, Lorenzo, Terzoli, Alfredo, Clayton, Peter G
- Authors: Thinyane, Mamello , Dalvit, Lorenzo , Terzoli, Alfredo , Clayton, Peter G
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431344 , vital:72766 , https://www.researchgate.net/profile/Alfredo-Ter-zoli/publication/262259378_The_Internet_in_rural_communities_unrestricted_and_contextualized/links/6597ec140bb2c7472b35fcac/The-Internet-in-rural-communities-unrestricted-and-contextualized.pdf
- Description: The benefits of the Internet are still not available to many marginalized communities because of lack of connectivity, costs of infrastructure and scarcity of skills. Many ICTforDevelopment (ICT4D) projects offer piecemeal interventions relying either on restricted (and often decontex-tualised) access to the Internet or on isolated Local Area Networks (LANs). In this paper we argue that marginalized rural communities should have unrestricted access to the Internet in order to exploit its full potential. We also believe that the Internet could be contextualized through an optional adaptation layer which would facilitate access. We discuss an ICT4D project which was shaped from the very beginning according to these principles. It involves the deployment of an eCom-merce platform (soon to be integrated with eHealth, eLearning and eGovernment capabilities) in a rural community in South Africa. We re-port on how the various components of this intervention fit into the model, and the benefits for the community.
- Full Text:
- Date Issued: 2008
- Authors: Thinyane, Mamello , Dalvit, Lorenzo , Terzoli, Alfredo , Clayton, Peter G
- Date: 2008
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431344 , vital:72766 , https://www.researchgate.net/profile/Alfredo-Ter-zoli/publication/262259378_The_Internet_in_rural_communities_unrestricted_and_contextualized/links/6597ec140bb2c7472b35fcac/The-Internet-in-rural-communities-unrestricted-and-contextualized.pdf
- Description: The benefits of the Internet are still not available to many marginalized communities because of lack of connectivity, costs of infrastructure and scarcity of skills. Many ICTforDevelopment (ICT4D) projects offer piecemeal interventions relying either on restricted (and often decontex-tualised) access to the Internet or on isolated Local Area Networks (LANs). In this paper we argue that marginalized rural communities should have unrestricted access to the Internet in order to exploit its full potential. We also believe that the Internet could be contextualized through an optional adaptation layer which would facilitate access. We discuss an ICT4D project which was shaped from the very beginning according to these principles. It involves the deployment of an eCom-merce platform (soon to be integrated with eHealth, eLearning and eGovernment capabilities) in a rural community in South Africa. We re-port on how the various components of this intervention fit into the model, and the benefits for the community.
- Full Text:
- Date Issued: 2008
Changing words and worlds?: a phenomenological study of the acquisition of an academic literacy
- Authors: Thomson, Carol Irene
- Date: 2008
- Subjects: Education -- Study and teaching (Higher) -- South Africa Universities and colleges -- South Africa College student development programs -- South Africa Literacy -- South Africa Education, Higher -- Philosophy Educational change -- South Africa Phenomenology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1446 , http://hdl.handle.net/10962/d1003327
- Description: This study is contextualised within the field of post-graduate, continuing teacher education, and the vibrant and demanding policy context that has characterised higher education in post-apartheid South Africa. Situated within a module specifically designed to address what is commonly understood to be the academic literacy development needs of students in the Bachelor of Education Honours programme at the former University of Natal, it aims to unveil the lived experiences of students taking this module. The module, Reading and Writing Academic Texts (RWAT), was developed in direct response to academics’ call that something be done about the ‘problem’ of students’ reading and writing proficiency. As a core, compulsory module, RWAT was informed by Systemic Functional Linguistics and drew on Genre Theory for its conceptual and theoretical framework. It foregrounded the genre of the academic argument as the key academic literacy that was taught. The motivation for this study came from my own increasing concern that the theoretical and conceptual framework we had adopted for the module was emerging as an inherently limiting and formulaic model of literacy, and was resulting in students exiting the module with little or no ‘critical’ perspective on any aspect of literacy as social practice. I was also keen, in a climate of increasing de-personalisation and the massification of education, to reinstate the personal. Thus, I chose to focus on individual lives, and through an exploration of a small group of participants’ ‘lived’ experiences of the RWAT module, ascertain what it is like to acquire an academic literacy. The key research question is, therefore: What is it like to acquire an academic literacy? The secondary research question is: How is this experience influenced by the mode of delivery in which it occurs? For its conceptual and theoretical framing, this study draws on social literacy theory and phenomenology, the latter as both a philosophy and a methodology. However, although the study has drawn significantly on the phenomenological tradition for inspiration and direction, it has not done so uncritically. Thus, the study engages with phenomenology-as-philosophy in great depth before turning to phenomenology-as-methodology, in order to arrive at a point where the methods and procedures applied in it, are justified. The main findings of the study suggest that, despite the RWAT module espousing an ideological model (Street, 1984) of literacy in its learning materials and readings, participants came very much closer to experiencing an autonomous model of literacy (Street, 1984). The data shows that the RWAT module was largely inadequate to the task of inducting participants into the ‘situated practices’ and ‘situated meanings’ of the Discourse of Genre Theory and/or the academy, hence the many ‘lived’ difficulties participants experienced. The data also highlights the ease with which an autonomous model of literacy can come to govern practice and student experience even when curriculum intention is underpinned by an ideological position on literacy as social practice. Finally, the study suggests that the research community in South Africa, characterised as it is by such diversity, would be enriched by more studies derived from phenomenology, and a continuing engagement with phenomenology-as-a-movement in order to both challenge and expand its existing framework.
- Full Text:
- Date Issued: 2008
- Authors: Thomson, Carol Irene
- Date: 2008
- Subjects: Education -- Study and teaching (Higher) -- South Africa Universities and colleges -- South Africa College student development programs -- South Africa Literacy -- South Africa Education, Higher -- Philosophy Educational change -- South Africa Phenomenology
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1446 , http://hdl.handle.net/10962/d1003327
- Description: This study is contextualised within the field of post-graduate, continuing teacher education, and the vibrant and demanding policy context that has characterised higher education in post-apartheid South Africa. Situated within a module specifically designed to address what is commonly understood to be the academic literacy development needs of students in the Bachelor of Education Honours programme at the former University of Natal, it aims to unveil the lived experiences of students taking this module. The module, Reading and Writing Academic Texts (RWAT), was developed in direct response to academics’ call that something be done about the ‘problem’ of students’ reading and writing proficiency. As a core, compulsory module, RWAT was informed by Systemic Functional Linguistics and drew on Genre Theory for its conceptual and theoretical framework. It foregrounded the genre of the academic argument as the key academic literacy that was taught. The motivation for this study came from my own increasing concern that the theoretical and conceptual framework we had adopted for the module was emerging as an inherently limiting and formulaic model of literacy, and was resulting in students exiting the module with little or no ‘critical’ perspective on any aspect of literacy as social practice. I was also keen, in a climate of increasing de-personalisation and the massification of education, to reinstate the personal. Thus, I chose to focus on individual lives, and through an exploration of a small group of participants’ ‘lived’ experiences of the RWAT module, ascertain what it is like to acquire an academic literacy. The key research question is, therefore: What is it like to acquire an academic literacy? The secondary research question is: How is this experience influenced by the mode of delivery in which it occurs? For its conceptual and theoretical framing, this study draws on social literacy theory and phenomenology, the latter as both a philosophy and a methodology. However, although the study has drawn significantly on the phenomenological tradition for inspiration and direction, it has not done so uncritically. Thus, the study engages with phenomenology-as-philosophy in great depth before turning to phenomenology-as-methodology, in order to arrive at a point where the methods and procedures applied in it, are justified. The main findings of the study suggest that, despite the RWAT module espousing an ideological model (Street, 1984) of literacy in its learning materials and readings, participants came very much closer to experiencing an autonomous model of literacy (Street, 1984). The data shows that the RWAT module was largely inadequate to the task of inducting participants into the ‘situated practices’ and ‘situated meanings’ of the Discourse of Genre Theory and/or the academy, hence the many ‘lived’ difficulties participants experienced. The data also highlights the ease with which an autonomous model of literacy can come to govern practice and student experience even when curriculum intention is underpinned by an ideological position on literacy as social practice. Finally, the study suggests that the research community in South Africa, characterised as it is by such diversity, would be enriched by more studies derived from phenomenology, and a continuing engagement with phenomenology-as-a-movement in order to both challenge and expand its existing framework.
- Full Text:
- Date Issued: 2008
Franchising a full service restaurant concept : a case study
- Authors: Thomson, Guy
- Date: 2008
- Subjects: Franchises (Retail trade) -- South Africa -- Eastern Cape , Franchises (Retail trade) -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8728 , http://hdl.handle.net/10948/874 , Franchises (Retail trade) -- South Africa -- Eastern Cape , Franchises (Retail trade) -- Management
- Description: This treatise investigates the restaurant industry, entrepreneurship, franchising and restaurant franchising in order to develop a model that will enable a full service restaurant concept to be converted into a successful franchise system. Restaurants play a significant role in our lifestyle, and dining out is a favoured social activity. The industry plays an important role in the transfer of skills as many people start working in the restaurant industry before moving onto more formal careers. The restaurant industry offers many opportunities for entrepreneurial activity as a result of the relatively low barriers to entry. Entrepreneurship is the pursuit of opportunity regardless of the resources at hand and it requires a willingness to take calculated risks in order to build something of value from virtually nothing. The success of emerging economies such as China and India has proven that the only growth sectors in these economies are small and medium enterprises, which are driven by entrepreneurs. Franchising is considered to be a viable growth strategy for small business as it provides a means of raising capital and a method of expanding the business in a relatively low risk manner. There are many well established restaurant franchise brands that originated in South Africa, starting out as successful single outlets and then by means of the business format franchise model, developed into multi unit franchise systems. There are certain basic generic steps that must be followed when developing a franchise system. This was verified by the empirical study of this treatise which was conducted as a single unit case study on the Dulce Franchise Group. Finally, as a result of the analysis of the literature study and the findings of the case study, a restaurant franchise conversion model was developed.
- Full Text:
- Date Issued: 2008
- Authors: Thomson, Guy
- Date: 2008
- Subjects: Franchises (Retail trade) -- South Africa -- Eastern Cape , Franchises (Retail trade) -- Management
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8728 , http://hdl.handle.net/10948/874 , Franchises (Retail trade) -- South Africa -- Eastern Cape , Franchises (Retail trade) -- Management
- Description: This treatise investigates the restaurant industry, entrepreneurship, franchising and restaurant franchising in order to develop a model that will enable a full service restaurant concept to be converted into a successful franchise system. Restaurants play a significant role in our lifestyle, and dining out is a favoured social activity. The industry plays an important role in the transfer of skills as many people start working in the restaurant industry before moving onto more formal careers. The restaurant industry offers many opportunities for entrepreneurial activity as a result of the relatively low barriers to entry. Entrepreneurship is the pursuit of opportunity regardless of the resources at hand and it requires a willingness to take calculated risks in order to build something of value from virtually nothing. The success of emerging economies such as China and India has proven that the only growth sectors in these economies are small and medium enterprises, which are driven by entrepreneurs. Franchising is considered to be a viable growth strategy for small business as it provides a means of raising capital and a method of expanding the business in a relatively low risk manner. There are many well established restaurant franchise brands that originated in South Africa, starting out as successful single outlets and then by means of the business format franchise model, developed into multi unit franchise systems. There are certain basic generic steps that must be followed when developing a franchise system. This was verified by the empirical study of this treatise which was conducted as a single unit case study on the Dulce Franchise Group. Finally, as a result of the analysis of the literature study and the findings of the case study, a restaurant franchise conversion model was developed.
- Full Text:
- Date Issued: 2008
A standards-based security model for health information systems
- Authors: Thomson, Steven Michael
- Date: 2008
- Subjects: Computer networks -- Security measures -- Standards -- South Africa , Data protection -- Management -- Standards , Computer security -- South Africa -- Management , Computers -- Access control -- South Africa , Management information systems -- Security measures -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9786 , http://hdl.handle.net/10948/718 , Computer networks -- Security measures -- Standards -- South Africa , Data protection -- Management -- Standards , Computer security -- South Africa -- Management , Computers -- Access control -- South Africa , Management information systems -- Security measures -- South Africa
- Description: In the healthcare environment, various types of patient information are stored in electronic format. This prevents the re-entering of information that was captured previously. In the past this information was stored on paper and kept in large filing cabinets. However, with the technology advancements that have occurred over the years, the idea of storing patient information in electronic systems arose. This led to a number of electronic health information systems being created, which in turn led to an increase in possible security risks. Any organization that stores information of a sensitive nature must apply information security principles in order to ensure that the stored information is kept secure. At a basic level, this entails ensuring the confidentiality, integrity and availability of the information, which is not an easy feat in today’s distributed and networked environments. This paved the way for organized standardization activities in the areas of information security and information security management. Throughout history, there have been practices that were created to help “standardize” industries of all areas, to the extent that there are professional organizations whose main objective it is to create such standards to help connect industries all over the world. This applies equally to the healthcare environment, where standardization took off in the late eighties. Healthcare organizations must follow standardized security measures to ensure that patient information stored in health information systems is kept secure. However, the proliferation in standards makes it difficult to understand, adopt and deploy these standards in a coherent manner. This research, therefore, proposes a standards-based security model for health information systems to ensure that such standards are applied in a manner that contributes to securing the healthcare environment as a whole, rather than in a piecemeal fashion.
- Full Text:
- Date Issued: 2008
- Authors: Thomson, Steven Michael
- Date: 2008
- Subjects: Computer networks -- Security measures -- Standards -- South Africa , Data protection -- Management -- Standards , Computer security -- South Africa -- Management , Computers -- Access control -- South Africa , Management information systems -- Security measures -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:9786 , http://hdl.handle.net/10948/718 , Computer networks -- Security measures -- Standards -- South Africa , Data protection -- Management -- Standards , Computer security -- South Africa -- Management , Computers -- Access control -- South Africa , Management information systems -- Security measures -- South Africa
- Description: In the healthcare environment, various types of patient information are stored in electronic format. This prevents the re-entering of information that was captured previously. In the past this information was stored on paper and kept in large filing cabinets. However, with the technology advancements that have occurred over the years, the idea of storing patient information in electronic systems arose. This led to a number of electronic health information systems being created, which in turn led to an increase in possible security risks. Any organization that stores information of a sensitive nature must apply information security principles in order to ensure that the stored information is kept secure. At a basic level, this entails ensuring the confidentiality, integrity and availability of the information, which is not an easy feat in today’s distributed and networked environments. This paved the way for organized standardization activities in the areas of information security and information security management. Throughout history, there have been practices that were created to help “standardize” industries of all areas, to the extent that there are professional organizations whose main objective it is to create such standards to help connect industries all over the world. This applies equally to the healthcare environment, where standardization took off in the late eighties. Healthcare organizations must follow standardized security measures to ensure that patient information stored in health information systems is kept secure. However, the proliferation in standards makes it difficult to understand, adopt and deploy these standards in a coherent manner. This research, therefore, proposes a standards-based security model for health information systems to ensure that such standards are applied in a manner that contributes to securing the healthcare environment as a whole, rather than in a piecemeal fashion.
- Full Text:
- Date Issued: 2008
Development of methodologies for deploying and implementing local & medium area broadband PLC networks in office and residential electric grids
- Authors: Tinarwo, Loyd
- Date: 2008
- Subjects: Broadband communication systems , Power transmission , Telecommunication lines
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11375 , http://hdl.handle.net/10353/83 , Broadband communication systems , Power transmission , Telecommunication lines
- Description: The use of electrical networks for telecommunications has a long history. It has been known since the beginning of the twentieth century [Ahola03]. The idea of using electrical networks for broadband communications arose in the 1990s [Hrasnica et al 04]. Recent and growing research interest has indicated that PowerLine Communications (PLC) is the threshold for achieving broadband delivery particularly in very dispersed and low teledensity areas. Currently, there are numerous PLC trials and commercial deployments underway inside and outside South Africa. Nevertheless, these PLC deployments are very isolated, done without clear methodology and performance remains bound to the physical layout of the electrical network. Because of that high bandwidth broadband PLC systems are prone to poor performance and this in turn limits the acceptance and deployment of this emerging alternative broadband technology. Though, PLC technical challenges are being addressed, there has been little analysis and research work that is focused on the “Development of Methodologies for Deploying and Implementing Local & Medium Area Broadband Power Line in Residential and Office Electric Grids” that would lead to broadband PLC being adopted and be of greater use to non-broadband communities of South Africa. PLC is a term describing several different systems using electrical grid distribution wires for simultaneous distribution of data by superimposing an analog signal [Hrasnica et al 04]. The research proposed and presented broadband PLC methodologies for typical medium voltage and local voltage PLC networks. These methodologieswere implemented and experimented with in configurations which closely mirrored residential and office settings through laboratory and multibuilding experiments using commercial 2nd Generation Mitsubishi Electric PLC technology. Research results presented not only serve to provide insight into broadband PLC but also how it handled broadband applications (communications), competed and compared with other technologies such as Ethernet LAN. In combination with networking communication theories, the research explored and analyzed the extent of PLC in providing broadband communication to residential and office electric grids at the University Fort Hare, Computer Science Department.
- Full Text:
- Date Issued: 2008
- Authors: Tinarwo, Loyd
- Date: 2008
- Subjects: Broadband communication systems , Power transmission , Telecommunication lines
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11375 , http://hdl.handle.net/10353/83 , Broadband communication systems , Power transmission , Telecommunication lines
- Description: The use of electrical networks for telecommunications has a long history. It has been known since the beginning of the twentieth century [Ahola03]. The idea of using electrical networks for broadband communications arose in the 1990s [Hrasnica et al 04]. Recent and growing research interest has indicated that PowerLine Communications (PLC) is the threshold for achieving broadband delivery particularly in very dispersed and low teledensity areas. Currently, there are numerous PLC trials and commercial deployments underway inside and outside South Africa. Nevertheless, these PLC deployments are very isolated, done without clear methodology and performance remains bound to the physical layout of the electrical network. Because of that high bandwidth broadband PLC systems are prone to poor performance and this in turn limits the acceptance and deployment of this emerging alternative broadband technology. Though, PLC technical challenges are being addressed, there has been little analysis and research work that is focused on the “Development of Methodologies for Deploying and Implementing Local & Medium Area Broadband Power Line in Residential and Office Electric Grids” that would lead to broadband PLC being adopted and be of greater use to non-broadband communities of South Africa. PLC is a term describing several different systems using electrical grid distribution wires for simultaneous distribution of data by superimposing an analog signal [Hrasnica et al 04]. The research proposed and presented broadband PLC methodologies for typical medium voltage and local voltage PLC networks. These methodologieswere implemented and experimented with in configurations which closely mirrored residential and office settings through laboratory and multibuilding experiments using commercial 2nd Generation Mitsubishi Electric PLC technology. Research results presented not only serve to provide insight into broadband PLC but also how it handled broadband applications (communications), competed and compared with other technologies such as Ethernet LAN. In combination with networking communication theories, the research explored and analyzed the extent of PLC in providing broadband communication to residential and office electric grids at the University Fort Hare, Computer Science Department.
- Full Text:
- Date Issued: 2008