Pharmaceutical analysis and aspects of the quality control of St. John's Wort products
- Authors: Wild, Tracy Joy
- Date: 2003
- Subjects: Hypericum perforatum , Hypericum perforatum -- Analysis , Hypericum perforatum -- Therapeutic use , Hypericum perforatum -- Physiological effect , Flavonoids -- Analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3804 , http://hdl.handle.net/10962/d1003282 , Hypericum perforatum , Hypericum perforatum -- Analysis , Hypericum perforatum -- Therapeutic use , Hypericum perforatum -- Physiological effect , Flavonoids -- Analysis
- Description: Most complementary medicines contain a multitude of chemical components, some of which are claimed to contribute to the biological activity of such products. Use of complementary medicines for preventative and therapeutic purposes is increasing rapidly worldwide. Unfortunately, although control of these products is essential to ensure quality, safety, and efficacy, the quality control of most herbal preparations is currently poor to non-existent, with little or no safety and efficacy data required to support the marketing and use of these products. The objective of this study was therefore to develop suitable analytical methods to qualitatively and quantitatively analyse the relevant components (rutin, isoquercitrin, hyperoside, quercitrin, quercetin, kaempferol, hypericin, pseudohypericin and hyperforin) in St John's Wort dosage forms for quality control purposes. A gradient HPLC method using a Luna 5·mC₁₈(2) 150 x 2.00mm internal diameter (i.d.) column and UV detection, was developed for the separation of six of the relevant flavonoid compounds in St John's Wort, namely rutin, isoquercitrin, hyperoside, quercitrin, quercetin and kaempferol. The development process involved a systematic investigation of gradient conditions, flow rate, and temperature. This method was subsequently applied to assay selected commercially available St John's Wort products. This system provided the necessary accuracy, precision and reproducibility and was associated with several advantages when compared to using standard bore (4.60 mm i.d.) HPLC columns. The method developed is currently the only known method that separates all six relevant flavonoids in a reasonable run time (less than 20 minutes). It is also one of the few methods that has sufficient separation between rutin, isoquercitrin and hyperoside. A qualitative method for the fingerprinting of flavonoid components was also developed, using capillary electrophoresis (CE). CE is a rapidly growing powerful analytical technique for the separation of charged compounds. Micellar electrokinetic chromatography (MEKC) is a very powerful electrophoretic technique that is capable of selectively resolving both neutral and ionic solutes in a single run. A MEKC method suitable for the separation and determination of various flavonoid constituents used as marker compounds in Hypericum perforatum was developed. Investigations into the effect of pH, ionic strength, applied voltage and capillary dimensions on separation were performed. The optimised method was then applied to qualitatively analyse various St John's Wort products on the market. This method was found to be advantageous in that it was simple, cost-effective, required minimal sample preparation and utilised very small quantities of sample. Due to the vast differences in chemical properties between the various marker and active components in St John's Wort, it was necessary to develop separate analytical methods for the flavonoids and for the other three relevant compounds (hypericin, pseudohypericin and hyperforin). An isocratic HPLC method using a Luna 5·mC₁₈(2) 150 x 2.00mm (i.d.) column and UV detection was developed for the separation of hypericin, pseudohypericin and hyperforin. The development process involved a systematic investigation of buffer molarity, mobile phase composition, pH, flow rate, and temperature. This method was subsequently applied to assay selected commercially available St John's Wort products on the South African market. This system also provided the necessary accuracy, precision and reproducibility, as well as the advantages associated with the use of a narrow bore column as opposed to the use of the more commonly used wider bore columns. This method was validated and used to quantitate these three compounds in various commercial St John's Wort products. By applying this method to liquid chromatography – tandem mass spectrometry (LC-MS-MS), qualitative analyses of the same products was performed to obtain confirmation of the quantitative HPLC results. Mass spectrometry is a powerful detection tool that is more selective and specific than many detection systems used with HPLC. Natural medicines usually constitute a multitude of constituents with much potential interference. In this regard LC-MS-MS is a powerful tool, with its ability to unequivocally identify target analytes regardless of the presence of interferences or complex matrices. ESI-MS-MS was used for the qualitative analysis of the content of the naphthodianthrones and hyperforin in the respective tablet products assayed with HPLC. LC-MS-MS analyses were performed in order to identify the constituents and to verify the specificity of the HPLC method. High inter-product and inter-batch variability was observed for all nine compounds assayed. These quantitative results were confirmed with the respective qualitative analyses. This study confirms the need for strict quality control of herbal medicinal products commercially available to consumers.
- Full Text:
- Date Issued: 2003
- Authors: Wild, Tracy Joy
- Date: 2003
- Subjects: Hypericum perforatum , Hypericum perforatum -- Analysis , Hypericum perforatum -- Therapeutic use , Hypericum perforatum -- Physiological effect , Flavonoids -- Analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3804 , http://hdl.handle.net/10962/d1003282 , Hypericum perforatum , Hypericum perforatum -- Analysis , Hypericum perforatum -- Therapeutic use , Hypericum perforatum -- Physiological effect , Flavonoids -- Analysis
- Description: Most complementary medicines contain a multitude of chemical components, some of which are claimed to contribute to the biological activity of such products. Use of complementary medicines for preventative and therapeutic purposes is increasing rapidly worldwide. Unfortunately, although control of these products is essential to ensure quality, safety, and efficacy, the quality control of most herbal preparations is currently poor to non-existent, with little or no safety and efficacy data required to support the marketing and use of these products. The objective of this study was therefore to develop suitable analytical methods to qualitatively and quantitatively analyse the relevant components (rutin, isoquercitrin, hyperoside, quercitrin, quercetin, kaempferol, hypericin, pseudohypericin and hyperforin) in St John's Wort dosage forms for quality control purposes. A gradient HPLC method using a Luna 5·mC₁₈(2) 150 x 2.00mm internal diameter (i.d.) column and UV detection, was developed for the separation of six of the relevant flavonoid compounds in St John's Wort, namely rutin, isoquercitrin, hyperoside, quercitrin, quercetin and kaempferol. The development process involved a systematic investigation of gradient conditions, flow rate, and temperature. This method was subsequently applied to assay selected commercially available St John's Wort products. This system provided the necessary accuracy, precision and reproducibility and was associated with several advantages when compared to using standard bore (4.60 mm i.d.) HPLC columns. The method developed is currently the only known method that separates all six relevant flavonoids in a reasonable run time (less than 20 minutes). It is also one of the few methods that has sufficient separation between rutin, isoquercitrin and hyperoside. A qualitative method for the fingerprinting of flavonoid components was also developed, using capillary electrophoresis (CE). CE is a rapidly growing powerful analytical technique for the separation of charged compounds. Micellar electrokinetic chromatography (MEKC) is a very powerful electrophoretic technique that is capable of selectively resolving both neutral and ionic solutes in a single run. A MEKC method suitable for the separation and determination of various flavonoid constituents used as marker compounds in Hypericum perforatum was developed. Investigations into the effect of pH, ionic strength, applied voltage and capillary dimensions on separation were performed. The optimised method was then applied to qualitatively analyse various St John's Wort products on the market. This method was found to be advantageous in that it was simple, cost-effective, required minimal sample preparation and utilised very small quantities of sample. Due to the vast differences in chemical properties between the various marker and active components in St John's Wort, it was necessary to develop separate analytical methods for the flavonoids and for the other three relevant compounds (hypericin, pseudohypericin and hyperforin). An isocratic HPLC method using a Luna 5·mC₁₈(2) 150 x 2.00mm (i.d.) column and UV detection was developed for the separation of hypericin, pseudohypericin and hyperforin. The development process involved a systematic investigation of buffer molarity, mobile phase composition, pH, flow rate, and temperature. This method was subsequently applied to assay selected commercially available St John's Wort products on the South African market. This system also provided the necessary accuracy, precision and reproducibility, as well as the advantages associated with the use of a narrow bore column as opposed to the use of the more commonly used wider bore columns. This method was validated and used to quantitate these three compounds in various commercial St John's Wort products. By applying this method to liquid chromatography – tandem mass spectrometry (LC-MS-MS), qualitative analyses of the same products was performed to obtain confirmation of the quantitative HPLC results. Mass spectrometry is a powerful detection tool that is more selective and specific than many detection systems used with HPLC. Natural medicines usually constitute a multitude of constituents with much potential interference. In this regard LC-MS-MS is a powerful tool, with its ability to unequivocally identify target analytes regardless of the presence of interferences or complex matrices. ESI-MS-MS was used for the qualitative analysis of the content of the naphthodianthrones and hyperforin in the respective tablet products assayed with HPLC. LC-MS-MS analyses were performed in order to identify the constituents and to verify the specificity of the HPLC method. High inter-product and inter-batch variability was observed for all nine compounds assayed. These quantitative results were confirmed with the respective qualitative analyses. This study confirms the need for strict quality control of herbal medicinal products commercially available to consumers.
- Full Text:
- Date Issued: 2003
Physiological, perceptual and performance responses during cricket activity
- Authors: King, Gregory Allen
- Date: 2003
- Subjects: Cricket , Sports -- Psychological aspects , Sports -- Physiological aspects
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5131 , http://hdl.handle.net/10962/d1005210 , Cricket , Sports -- Psychological aspects , Sports -- Physiological aspects
- Description: The present study sought to determine the influence of environmental conditions and protective clothing on physiological, perceptual and performance responses during batting activity. The investigation examined mean skin temperature, average heart rate, estimated sweat rate, rating of perceived exertion, thermal sensation rating, average sprint time and pre-post choice reaction time. Twenty-five cricketers (18-22 yr, 73.1 ± 9.6 kg, 1768 ± 75 mm, 12.6 ± 3.1% body fat, 1.89 ± 0.16 m2) performed a work-bout consisting of a seven-Over batting period, during which time they faced deliveries from a bowling machine and performed two shuttle runs every third ball to total four sprints per Over. Trials were carried out under High-stress (23.8 ± 2.2 °C) and Low-stress (13.3 ± 1.9 °C) environmental conditions (WBGT). Within each environmental condition subjects performed the test wearing full protective batting gear and no protective gear. Thus, four specific conditions were examined; high full-gear (HFG), high no-gear (HNG), low full-gear (LFG) and low no-gear (LNG). Two-way ANOVAs were calculated to determine whether there were differences between environmental conditions and whether differences existed between the clothing conditions. One-way ANOVAs were utilised to compute differences between the four specific conditions combining clothing and environment. High environmental stress and wearing protective clothing caused batsmen to experience significant physiological strain. The environment was the greatest stressor, with the protective gear exacerbating these effects. However, when padding covered skin areas directly, this was the primary skin temperature stressor, particularly later in the activity. For skin temperature and heart rate, the strain was the most pronounced at the end of the trials. Perceptual responses indicated that the protective gear had no influence on effort sense, thermal sensation or thermal comfort. However, environmental conditions had an effect, and High-stress conditions resulted in significantly higher perceptions of effort, elevated sensations of heat and greater thermal discomfort. Effort was perceived to be greatest towards the end of the trial. There were mixed findings for performance factors. In general sprint performance was not hindered by environmental stress, but protective clothing caused a reduction in several sprint times. Choice reaction times were for the most part unaffected by either environment or clothing and few differences were observed between pre and post times. It is contended that intense short duration batting activity, likely encountered during one-day participation, imposes a stress on batsmen. The stress is greater when conditions are warmer and protective padding is worn, although it is not sufficient to impede choice reaction time. However, protective gear did have a deleterious effect on sprint performance.
- Full Text:
- Date Issued: 2003
- Authors: King, Gregory Allen
- Date: 2003
- Subjects: Cricket , Sports -- Psychological aspects , Sports -- Physiological aspects
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5131 , http://hdl.handle.net/10962/d1005210 , Cricket , Sports -- Psychological aspects , Sports -- Physiological aspects
- Description: The present study sought to determine the influence of environmental conditions and protective clothing on physiological, perceptual and performance responses during batting activity. The investigation examined mean skin temperature, average heart rate, estimated sweat rate, rating of perceived exertion, thermal sensation rating, average sprint time and pre-post choice reaction time. Twenty-five cricketers (18-22 yr, 73.1 ± 9.6 kg, 1768 ± 75 mm, 12.6 ± 3.1% body fat, 1.89 ± 0.16 m2) performed a work-bout consisting of a seven-Over batting period, during which time they faced deliveries from a bowling machine and performed two shuttle runs every third ball to total four sprints per Over. Trials were carried out under High-stress (23.8 ± 2.2 °C) and Low-stress (13.3 ± 1.9 °C) environmental conditions (WBGT). Within each environmental condition subjects performed the test wearing full protective batting gear and no protective gear. Thus, four specific conditions were examined; high full-gear (HFG), high no-gear (HNG), low full-gear (LFG) and low no-gear (LNG). Two-way ANOVAs were calculated to determine whether there were differences between environmental conditions and whether differences existed between the clothing conditions. One-way ANOVAs were utilised to compute differences between the four specific conditions combining clothing and environment. High environmental stress and wearing protective clothing caused batsmen to experience significant physiological strain. The environment was the greatest stressor, with the protective gear exacerbating these effects. However, when padding covered skin areas directly, this was the primary skin temperature stressor, particularly later in the activity. For skin temperature and heart rate, the strain was the most pronounced at the end of the trials. Perceptual responses indicated that the protective gear had no influence on effort sense, thermal sensation or thermal comfort. However, environmental conditions had an effect, and High-stress conditions resulted in significantly higher perceptions of effort, elevated sensations of heat and greater thermal discomfort. Effort was perceived to be greatest towards the end of the trial. There were mixed findings for performance factors. In general sprint performance was not hindered by environmental stress, but protective clothing caused a reduction in several sprint times. Choice reaction times were for the most part unaffected by either environment or clothing and few differences were observed between pre and post times. It is contended that intense short duration batting activity, likely encountered during one-day participation, imposes a stress on batsmen. The stress is greater when conditions are warmer and protective padding is worn, although it is not sufficient to impede choice reaction time. However, protective gear did have a deleterious effect on sprint performance.
- Full Text:
- Date Issued: 2003
Politics of asylum : sovereign considerations in the multilateral and humanitarian practices of refugee protection in post-apartheid South Africa
- Authors: Oduba, Victor
- Date: 2003
- Subjects: Refugees -- Africa , Refugees -- Government policy -- South Africa , Refugees -- Legal status, laws, etc. -- South Africa , Asylum, Right of -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2870 , http://hdl.handle.net/10962/d1007725 , Refugees -- Africa , Refugees -- Government policy -- South Africa , Refugees -- Legal status, laws, etc. -- South Africa , Asylum, Right of -- South Africa
- Description: Most scholars claim that international human rights norms embodied in formal international declarations and treaties have an important impact on domestic political interests and governmental practices. This reasoning about the impact of global human rights is often applied to the post-apartheid South African immigration and refugee policies. While I acknowledge that the ratification of United Nations Conventions on refugees has altered the traditional sovereignty considerations of South Africa towards asylum seekers, I take issue with the claims that South African refugee and asylum policies are primarily motivated and based on humanitarian considerations. Instead, I argue that these policies are based on sovereign considerations and strategic foreign policy interests. As a result this sovereign interests of South Africa to study has sought to demonstrate that largely explain decisions on the part accept or reject refugees. Although norms diffusion, international advocacy networks, and prestige factors have made a big impact, in practice the refugee policy has continued to reflect South Africa's strategic interests and domestic considerations at all levels. However, I have not argued that South Africa should overlook its national and foreign interests and abide by international human rights norms regardless of the cost of doing so. I have only sought to demonstrate that refugee protection is more when powerful national interests find it conducive to manage the destabilizing refugee flows.
- Full Text:
- Date Issued: 2003
- Authors: Oduba, Victor
- Date: 2003
- Subjects: Refugees -- Africa , Refugees -- Government policy -- South Africa , Refugees -- Legal status, laws, etc. -- South Africa , Asylum, Right of -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2870 , http://hdl.handle.net/10962/d1007725 , Refugees -- Africa , Refugees -- Government policy -- South Africa , Refugees -- Legal status, laws, etc. -- South Africa , Asylum, Right of -- South Africa
- Description: Most scholars claim that international human rights norms embodied in formal international declarations and treaties have an important impact on domestic political interests and governmental practices. This reasoning about the impact of global human rights is often applied to the post-apartheid South African immigration and refugee policies. While I acknowledge that the ratification of United Nations Conventions on refugees has altered the traditional sovereignty considerations of South Africa towards asylum seekers, I take issue with the claims that South African refugee and asylum policies are primarily motivated and based on humanitarian considerations. Instead, I argue that these policies are based on sovereign considerations and strategic foreign policy interests. As a result this sovereign interests of South Africa to study has sought to demonstrate that largely explain decisions on the part accept or reject refugees. Although norms diffusion, international advocacy networks, and prestige factors have made a big impact, in practice the refugee policy has continued to reflect South Africa's strategic interests and domestic considerations at all levels. However, I have not argued that South Africa should overlook its national and foreign interests and abide by international human rights norms regardless of the cost of doing so. I have only sought to demonstrate that refugee protection is more when powerful national interests find it conducive to manage the destabilizing refugee flows.
- Full Text:
- Date Issued: 2003
Procedural fairness in unprotected strike dismissals
- Authors: Nel, Werner
- Date: 2003
- Subjects: Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Employees -- Dismissal of -- Law and legislation -- South Africa , South Africa. Labour Relations Act -- 1995
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11049 , http://hdl.handle.net/10948/314 , Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Employees -- Dismissal of -- Law and legislation -- South Africa , South Africa. Labour Relations Act -- 1995
- Description: The Labour Relations Act contains a definition of a strike which reads as follows: “’strike’ means the partial or complete concerted refusal to work, or the retardation or obstruction of work, by persons who are or have been employed by the same employer or by different employers, for the purpose of remedying a grievance or resolving a dispute in respect of any matter of mutual interest between employer and employee, and every reference to ‘work’ in this definition includes overtime work, whether it is voluntary or compulsory.” The Labour Relations Act offers strikers special protection against dismissal if they conform with the Act and its provisions. Hence the distinction between those strikes and protest action in compliance with the Act, namely ‘protected’ strikes and protest action, and those strikes and protest action in violation of the Act, namely, ‘unprotected’ strikes and protest action. Participation in an unprotected strike is one form of misbehaviour. The Labour Relations Act expressly prohibits the dismissal of employees engaged in a lawful strike. Employees engaged in strike action contrary to the provisions of the Labour Relations Act may be dismissed since their strike action is deemed to be a form of misconduct. The dismissal of striking employees must be both substantially and procedurally fair.
- Full Text:
- Date Issued: 2003
- Authors: Nel, Werner
- Date: 2003
- Subjects: Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Employees -- Dismissal of -- Law and legislation -- South Africa , South Africa. Labour Relations Act -- 1995
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11049 , http://hdl.handle.net/10948/314 , Strikes and lockouts -- Law and legislation -- South Africa , Labor laws and legislation -- South Africa , Employees -- Dismissal of -- Law and legislation -- South Africa , South Africa. Labour Relations Act -- 1995
- Description: The Labour Relations Act contains a definition of a strike which reads as follows: “’strike’ means the partial or complete concerted refusal to work, or the retardation or obstruction of work, by persons who are or have been employed by the same employer or by different employers, for the purpose of remedying a grievance or resolving a dispute in respect of any matter of mutual interest between employer and employee, and every reference to ‘work’ in this definition includes overtime work, whether it is voluntary or compulsory.” The Labour Relations Act offers strikers special protection against dismissal if they conform with the Act and its provisions. Hence the distinction between those strikes and protest action in compliance with the Act, namely ‘protected’ strikes and protest action, and those strikes and protest action in violation of the Act, namely, ‘unprotected’ strikes and protest action. Participation in an unprotected strike is one form of misbehaviour. The Labour Relations Act expressly prohibits the dismissal of employees engaged in a lawful strike. Employees engaged in strike action contrary to the provisions of the Labour Relations Act may be dismissed since their strike action is deemed to be a form of misconduct. The dismissal of striking employees must be both substantially and procedurally fair.
- Full Text:
- Date Issued: 2003
Progress towards the development and implementation of an unambiguous copper wire fingerprinting system
- Authors: Poole, Martin
- Date: 2003
- Subjects: Electroplating , Copper , Telecommunication , Theft -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5484 , http://hdl.handle.net/10962/d1005270 , Electroplating , Copper , Telecommunication , Theft -- Prevention
- Description: The Telecommunications industry in Southern Africa is faced with the problem of theft of the signal carrying copper wire, both from the ground and from telephone poles. In many cases, if the offenders are caught, the prosecuting party has no way of proving that the wire is the property of any one Telecommunication company, as any inked markings on the insulating sheaths have been burned off along with the insulation and protective coatings themselves. Through this work we * describe the problem, * specify the necessary and preferred technical properties of a viable solution, * report the preliminary investigations into the devising of an unambiguous "fingerprinting" of the 0.5 mm wires, including some of those solutions that, upon investigation, appear non-viable, * describe the development and implementation of an electrochemical marker with detection mechanism which has shown in proof-of-principle to work, * outline the road-map of necessary future work.
- Full Text:
- Date Issued: 2003
- Authors: Poole, Martin
- Date: 2003
- Subjects: Electroplating , Copper , Telecommunication , Theft -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5484 , http://hdl.handle.net/10962/d1005270 , Electroplating , Copper , Telecommunication , Theft -- Prevention
- Description: The Telecommunications industry in Southern Africa is faced with the problem of theft of the signal carrying copper wire, both from the ground and from telephone poles. In many cases, if the offenders are caught, the prosecuting party has no way of proving that the wire is the property of any one Telecommunication company, as any inked markings on the insulating sheaths have been burned off along with the insulation and protective coatings themselves. Through this work we * describe the problem, * specify the necessary and preferred technical properties of a viable solution, * report the preliminary investigations into the devising of an unambiguous "fingerprinting" of the 0.5 mm wires, including some of those solutions that, upon investigation, appear non-viable, * describe the development and implementation of an electrochemical marker with detection mechanism which has shown in proof-of-principle to work, * outline the road-map of necessary future work.
- Full Text:
- Date Issued: 2003
Provocation as a defence in English and South African criminal law
- Authors: Krause, Samantha
- Date: 2003
- Subjects: Provocation (Criminal law) -- South Africa , Provocation (Criminal law) -- Great Britain
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11044 , http://hdl.handle.net/10948/310 , Provocation (Criminal law) -- South Africa , Provocation (Criminal law) -- Great Britain
- Description: In the past 20 years the defence of provocation has shifted from the periphery of South African law to a fully developed defence available to those who kill when provoked. Not only is the defence available to the provoked, but it has been extended to those who kill when subjected to emotional stress. However, the defence is mirred in controversy and bad decisions. Not only has the precise nature of the defence not been clarified, but this lack of clarity has been exacerbated by confusing decisions of our courts. This confusion is partly a result of the development of the defence of incapacity, particularly its extension to cases involving provocation and mental stress, and partly a result of its application in practice. Three major problems have plagued the provocation defence. Firstly, the courts have confused the defence of sane automatism with that of non-pathological incapacity. Secondly, there has been an implied use of an objective test in determining criminal incapacity where the enquiry has clearly been a subjective one. Thirdly, it has been held that the problem may not so much be the subjective aspect of provocation, but rather its application. The real problem seems to lie in the theoretical confusion as to the precise meaning of lack of “selfcontrol”. Lastly, on occasion the courts have failed to distinguish lack of capacity from diminished responsibility. Thus, in order to gain clarity concerning this “grey” area of the law these problems have created, it is necessary for South African law to consult more authoritative sources to receive guidance for the problems identified. One of those sources that has been consulted is that of English law. English law, however, deals with the defence of provocation in a different manner. Raising a defence of provocation here does not result in an acquittal but rather in a reduction of the charge to manslaughter. However, the English law on provocation is also 7 plagued by various problems. Firstly, there is the issue of cumulative provocation. Generally, there is little difficulty in cases where there is no “immediate trigger”. Secondly, the fundamental flaw with the current test of the reasonable man is that the courts have had to swing between the two aims of taking a compassionate view of human frailty while endeavoring to maintain an objective standard of the reasonable man. Lastly, it can be said that the problem with the proportionality requirement is that it makes the provocation defence dependant upon the assessment of the accused’s conduct after he or she lost his or her selfcontrol rather than on his or her giving way to passion and losing control in the first place. It is clear that from the problems identified in both South African law and English law concerning the defence of provocation the courts in each jurisdiction will have to pay careful attentio n to the problems highlighted and apply the law in such a way so as to ensure clarity and legal certainty.
- Full Text:
- Date Issued: 2003
- Authors: Krause, Samantha
- Date: 2003
- Subjects: Provocation (Criminal law) -- South Africa , Provocation (Criminal law) -- Great Britain
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:11044 , http://hdl.handle.net/10948/310 , Provocation (Criminal law) -- South Africa , Provocation (Criminal law) -- Great Britain
- Description: In the past 20 years the defence of provocation has shifted from the periphery of South African law to a fully developed defence available to those who kill when provoked. Not only is the defence available to the provoked, but it has been extended to those who kill when subjected to emotional stress. However, the defence is mirred in controversy and bad decisions. Not only has the precise nature of the defence not been clarified, but this lack of clarity has been exacerbated by confusing decisions of our courts. This confusion is partly a result of the development of the defence of incapacity, particularly its extension to cases involving provocation and mental stress, and partly a result of its application in practice. Three major problems have plagued the provocation defence. Firstly, the courts have confused the defence of sane automatism with that of non-pathological incapacity. Secondly, there has been an implied use of an objective test in determining criminal incapacity where the enquiry has clearly been a subjective one. Thirdly, it has been held that the problem may not so much be the subjective aspect of provocation, but rather its application. The real problem seems to lie in the theoretical confusion as to the precise meaning of lack of “selfcontrol”. Lastly, on occasion the courts have failed to distinguish lack of capacity from diminished responsibility. Thus, in order to gain clarity concerning this “grey” area of the law these problems have created, it is necessary for South African law to consult more authoritative sources to receive guidance for the problems identified. One of those sources that has been consulted is that of English law. English law, however, deals with the defence of provocation in a different manner. Raising a defence of provocation here does not result in an acquittal but rather in a reduction of the charge to manslaughter. However, the English law on provocation is also 7 plagued by various problems. Firstly, there is the issue of cumulative provocation. Generally, there is little difficulty in cases where there is no “immediate trigger”. Secondly, the fundamental flaw with the current test of the reasonable man is that the courts have had to swing between the two aims of taking a compassionate view of human frailty while endeavoring to maintain an objective standard of the reasonable man. Lastly, it can be said that the problem with the proportionality requirement is that it makes the provocation defence dependant upon the assessment of the accused’s conduct after he or she lost his or her selfcontrol rather than on his or her giving way to passion and losing control in the first place. It is clear that from the problems identified in both South African law and English law concerning the defence of provocation the courts in each jurisdiction will have to pay careful attentio n to the problems highlighted and apply the law in such a way so as to ensure clarity and legal certainty.
- Full Text:
- Date Issued: 2003
Psychoanalysis and realism
- Rae, Andrew Kenneth McKenzie
- Authors: Rae, Andrew Kenneth McKenzie
- Date: 2003
- Subjects: Psychoanalysis Realism Human beings -- Psychology International relations -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:2825 , http://hdl.handle.net/10962/d1003035
- Description: International politics has always been characterised by conflict. This has been true regardless of the political systems in place or of any specific time in the history of humanity. Inter-state conflict exists today despite the fact that the vast majority of the states of the world are members of the United Nations and signatories to various treaties aimed at removing conflict as a means of state action. The realist school of thought argues that the international system is characterised by continual state conflict, caused by competition over scarce resources. The propensity towards conflict is argued to be an essential characteristic of human nature and, as such, human nature is considered to be aggressive and conflictual. Thus, for the realist, inter-state competition, coupled with aggressive human nature, constitutes the primary cause of interstate conflict. This thesis aims to examine two criticisms of the realist position in depth. The first concerns the attribution of human nature to states. This logical progression is problematic because it creates a type of „state-nature‟ that cannot be defended without providing a logical link between the individual, the group and the state. It is therefore an aim of this thesis to provide this link, using methodological individualism, in order to provide a basis for the attribution of human nature to states. The second aim of this thesis is to examine the notion of human nature that is offered by the realists. It is not enough to claim that human nature is aggressive and conflictual merely because conflict has characterised international relations throughout history. Rather, one should examine the individual‟s psychological development, in order to gain an understanding of aggressive instincts apparent in human nature. The thesis therefore examines psychoanalysis in order to attempt an understanding both of human nature, and of the conditions under which human nature may manifest itself in an aggressive, conflictual manner. The intention of this thesis, then, is to provide a defence of political realism, highlighting the shortcomings of the two criticisms outlined above.
- Full Text:
- Date Issued: 2003
- Authors: Rae, Andrew Kenneth McKenzie
- Date: 2003
- Subjects: Psychoanalysis Realism Human beings -- Psychology International relations -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:2825 , http://hdl.handle.net/10962/d1003035
- Description: International politics has always been characterised by conflict. This has been true regardless of the political systems in place or of any specific time in the history of humanity. Inter-state conflict exists today despite the fact that the vast majority of the states of the world are members of the United Nations and signatories to various treaties aimed at removing conflict as a means of state action. The realist school of thought argues that the international system is characterised by continual state conflict, caused by competition over scarce resources. The propensity towards conflict is argued to be an essential characteristic of human nature and, as such, human nature is considered to be aggressive and conflictual. Thus, for the realist, inter-state competition, coupled with aggressive human nature, constitutes the primary cause of interstate conflict. This thesis aims to examine two criticisms of the realist position in depth. The first concerns the attribution of human nature to states. This logical progression is problematic because it creates a type of „state-nature‟ that cannot be defended without providing a logical link between the individual, the group and the state. It is therefore an aim of this thesis to provide this link, using methodological individualism, in order to provide a basis for the attribution of human nature to states. The second aim of this thesis is to examine the notion of human nature that is offered by the realists. It is not enough to claim that human nature is aggressive and conflictual merely because conflict has characterised international relations throughout history. Rather, one should examine the individual‟s psychological development, in order to gain an understanding of aggressive instincts apparent in human nature. The thesis therefore examines psychoanalysis in order to attempt an understanding both of human nature, and of the conditions under which human nature may manifest itself in an aggressive, conflictual manner. The intention of this thesis, then, is to provide a defence of political realism, highlighting the shortcomings of the two criticisms outlined above.
- Full Text:
- Date Issued: 2003
Putting participatory communication into practice through community radio: a case study of how policies on programming and production are formulated and implemented at Radio Graaff-Reinet
- Kanyegirire, Andrew Steve Tumuhirwe
- Authors: Kanyegirire, Andrew Steve Tumuhirwe
- Date: 2003
- Subjects: Radio broadcasting -- South Africa -- Graaff-Reinet , Radio in community development , Radio stations -- South Africa -- Graaff-Reinet -- Management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3442 , http://hdl.handle.net/10962/d1002896 , Radio broadcasting -- South Africa -- Graaff-Reinet , Radio in community development , Radio stations -- South Africa -- Graaff-Reinet -- Management
- Description: In the South African (SA) model of community radio, listeners are expected to be in charge of the management and programming operations of stations. This study tests the SA model against the actual conditions at an existing station. For this purpose, the study focuses on Radio Graaff-Reinet, a community radio station in the Eastern Cape. Emphasis is on examining the extent to which members of the station’s target community are involved in its operations. The study first assesses the nature of this involvement, keeping in mind the principles of, ‘community ownership’ and ‘participatory programming’ on which the SA model of community radio is based. It is argued that the station does provide a valuable ‘public sphere’ for its listeners. The potential of this sphere remains limited, however, due to the impact of ongoing power struggles around the ownership of the station. The lack of proper systems for managing these struggles has contributed to the fact that the station continues to be in a constant state of flux, with a high turnover of staff and regular changes in its policies and strategies. The study argues that, until such systems are put in place, the principles of community ownership will not be fully realizable. Areas in which the struggle over ownership plays itself out can be identified in the relationship between the station’s Board of Directors and its managing staff, between one particular station manager and her staff and between the station and its target community. These struggles often take place in context of a debate about the financial sustainability of the station versus its developmental aims. It is argued that this opposition needs to be questioned since, until the station is financially stable, it will remain vulnerable to interference by powerful individuals and groups in its attempts to establish such developmental aims. The study then goes on to identify key weaknesses in the station’s approach to community ownership and participation. In particular, it is pointed out that various stakeholders in the station have contradictory understandings of what is meant by ‘community’, using the term to include or exclude sections of the Graaff-Reinet society in very different ways. There are also very different understandings at play about the concept of community radio itself. These contradictions have an impact on the station’s ability to implement participatory programming. This situation is exacerbated by the fact that the station does not have a consistent forum in which shared decision-making can take place. Consequently, the station also remains unable to draw effectively on its own volunteer staff and on its community as resources for programming content. Finally, the study explores the broader significance of the weaknesses that exist in the case of Graaff-Reinet, arguing that these are problems that repeat themselves throughout the South African community radio sector. Possible strategies for addressing these problems are suggested, including approaches to monitoring and research, training, organizational development and advocacy.
- Full Text:
- Date Issued: 2003
- Authors: Kanyegirire, Andrew Steve Tumuhirwe
- Date: 2003
- Subjects: Radio broadcasting -- South Africa -- Graaff-Reinet , Radio in community development , Radio stations -- South Africa -- Graaff-Reinet -- Management
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3442 , http://hdl.handle.net/10962/d1002896 , Radio broadcasting -- South Africa -- Graaff-Reinet , Radio in community development , Radio stations -- South Africa -- Graaff-Reinet -- Management
- Description: In the South African (SA) model of community radio, listeners are expected to be in charge of the management and programming operations of stations. This study tests the SA model against the actual conditions at an existing station. For this purpose, the study focuses on Radio Graaff-Reinet, a community radio station in the Eastern Cape. Emphasis is on examining the extent to which members of the station’s target community are involved in its operations. The study first assesses the nature of this involvement, keeping in mind the principles of, ‘community ownership’ and ‘participatory programming’ on which the SA model of community radio is based. It is argued that the station does provide a valuable ‘public sphere’ for its listeners. The potential of this sphere remains limited, however, due to the impact of ongoing power struggles around the ownership of the station. The lack of proper systems for managing these struggles has contributed to the fact that the station continues to be in a constant state of flux, with a high turnover of staff and regular changes in its policies and strategies. The study argues that, until such systems are put in place, the principles of community ownership will not be fully realizable. Areas in which the struggle over ownership plays itself out can be identified in the relationship between the station’s Board of Directors and its managing staff, between one particular station manager and her staff and between the station and its target community. These struggles often take place in context of a debate about the financial sustainability of the station versus its developmental aims. It is argued that this opposition needs to be questioned since, until the station is financially stable, it will remain vulnerable to interference by powerful individuals and groups in its attempts to establish such developmental aims. The study then goes on to identify key weaknesses in the station’s approach to community ownership and participation. In particular, it is pointed out that various stakeholders in the station have contradictory understandings of what is meant by ‘community’, using the term to include or exclude sections of the Graaff-Reinet society in very different ways. There are also very different understandings at play about the concept of community radio itself. These contradictions have an impact on the station’s ability to implement participatory programming. This situation is exacerbated by the fact that the station does not have a consistent forum in which shared decision-making can take place. Consequently, the station also remains unable to draw effectively on its own volunteer staff and on its community as resources for programming content. Finally, the study explores the broader significance of the weaknesses that exist in the case of Graaff-Reinet, arguing that these are problems that repeat themselves throughout the South African community radio sector. Possible strategies for addressing these problems are suggested, including approaches to monitoring and research, training, organizational development and advocacy.
- Full Text:
- Date Issued: 2003
Regionalism and conflict resolution in the Horn of Africa : the role of inter-governmental authority on development in the Sudanese civil war
- Authors: Onyango, Moses
- Date: 2003
- Subjects: Africa, Northeast -- Politics and government -- 1900-1974 , Africa, Northeast -- Politics and government -- 1974- , Africa, Northeast -- Foreign relations -- 1974- , Federal government -- Africa, Northeast , Sudan -- History -- Civil War, 1955-1972 , Mediation, International , Culture conflict Sudan
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2869 , http://hdl.handle.net/10962/d1007715 , Africa, Northeast -- Politics and government -- 1900-1974 , Africa, Northeast -- Politics and government -- 1974- , Africa, Northeast -- Foreign relations -- 1974- , Federal government -- Africa, Northeast , Sudan -- History -- Civil War, 1955-1972 , Mediation, International , Culture conflict Sudan
- Description: This thesis expounds the theoretical underpinnings of problem-solving approach to conflict resolution. It also criticizes the traditional state-centric approach to conflict resolution being followed by the Inter Governmental Authority on Development (IGAD) in the Sudanese civil war. IGAD was initially known as Inter Governmental Authority on Drought and Desertification (IGADD), but was renamed IGAD in 1996. Its objectives were reformulated to give priority to conflict prevention, resolution, and management, and humanitarian affairs. It is stipulated in the thesis that IGAD faces problems that need attention if the Sudanese civil war is to be resolved. A key problem is that while IGAD's objectives were reformulated to give priority to conflict resolution, IGAD's management structure has remained the same. The management structure is state-centric and lacks neutrality, which is a very important ingredient in deep-rooted social conflict resolution. The management structure, which was initially based on combating drought and desertification, was not restructured to conform to the realities of a problem solving approach to conflict resolution. The committee that was formed to look into the Sudanese conflict is composed of states in dispute with Sudan. The other structural problem cited in the thesis is that the IGAD peace process is cumbersome and does not include all aggrieved parties. The meetings involve heads of state, ministers, ambassadors and other government representatives. The peace process is not inclusive of other important players such as other rebel movements. This thesis concludes that: 1. there is a need for peace keeping forces from neutral African Union (AU) member states; 2. conflict resolution specialists are deployed in the region whose main task would be to assist the belligerent groups to reach a common understanding of their problems; 3. the United Nations (UN) acts proactively to create international awareness to the Sudanese problem.
- Full Text:
- Date Issued: 2003
- Authors: Onyango, Moses
- Date: 2003
- Subjects: Africa, Northeast -- Politics and government -- 1900-1974 , Africa, Northeast -- Politics and government -- 1974- , Africa, Northeast -- Foreign relations -- 1974- , Federal government -- Africa, Northeast , Sudan -- History -- Civil War, 1955-1972 , Mediation, International , Culture conflict Sudan
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2869 , http://hdl.handle.net/10962/d1007715 , Africa, Northeast -- Politics and government -- 1900-1974 , Africa, Northeast -- Politics and government -- 1974- , Africa, Northeast -- Foreign relations -- 1974- , Federal government -- Africa, Northeast , Sudan -- History -- Civil War, 1955-1972 , Mediation, International , Culture conflict Sudan
- Description: This thesis expounds the theoretical underpinnings of problem-solving approach to conflict resolution. It also criticizes the traditional state-centric approach to conflict resolution being followed by the Inter Governmental Authority on Development (IGAD) in the Sudanese civil war. IGAD was initially known as Inter Governmental Authority on Drought and Desertification (IGADD), but was renamed IGAD in 1996. Its objectives were reformulated to give priority to conflict prevention, resolution, and management, and humanitarian affairs. It is stipulated in the thesis that IGAD faces problems that need attention if the Sudanese civil war is to be resolved. A key problem is that while IGAD's objectives were reformulated to give priority to conflict resolution, IGAD's management structure has remained the same. The management structure is state-centric and lacks neutrality, which is a very important ingredient in deep-rooted social conflict resolution. The management structure, which was initially based on combating drought and desertification, was not restructured to conform to the realities of a problem solving approach to conflict resolution. The committee that was formed to look into the Sudanese conflict is composed of states in dispute with Sudan. The other structural problem cited in the thesis is that the IGAD peace process is cumbersome and does not include all aggrieved parties. The meetings involve heads of state, ministers, ambassadors and other government representatives. The peace process is not inclusive of other important players such as other rebel movements. This thesis concludes that: 1. there is a need for peace keeping forces from neutral African Union (AU) member states; 2. conflict resolution specialists are deployed in the region whose main task would be to assist the belligerent groups to reach a common understanding of their problems; 3. the United Nations (UN) acts proactively to create international awareness to the Sudanese problem.
- Full Text:
- Date Issued: 2003
Review and development of environmental interpretation resources to foster environmental learning in two Kenyan schools
- Authors: Atiti, Abel Barasa
- Date: 2003
- Subjects: Environmental education -- Kenya Environmental education -- Kenya -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1743 , http://hdl.handle.net/10962/d1003627
- Description: This participatory action research study involved a group of teachers in transforming school grounds into interpretation resources. Approached from a critical perspective, it challenged the conventional top-down approaches to interpretation resources and materials development. Through a teacher-centred approach, a school-based ‘botanic garden’ and ‘arboretum’ were developed at Samaj and Kenya High respectively. Teachers were further actively engaged in developing a variety of interpretive materials that might engage learners in socially critical environmental education processes at the transformed sites. A process in which educators from five non-formal education organisations shared their skills and knowledge on environmental interpretation with teachers preceded the development of interpretation resources and materials. Drawing on Latour (1999), I have applied the notion of mobilising interpretive capital when describing this process. Interpretive capital within the non-formal education sector was mobilised and made available through social interactions between teachers and non-formal educators. This occurred during workshops, organisational visits and critical reviews of a sample of interpretive materials. I provide insights into how the interpretive capital was mobilised and later drawn on by teachers during the development processes in their schools. This study argues that mobilising interpretive capital with teachers through partnerships can enhance the transformation of school grounds to foster environmental learning. It shows how attempts to find solutions with teachers were made in response to pedagogical and curriculum tensions that arise around the implementation of environmental education processes in their schools. To provide orientation in environmental education processes in schools, analyses of socially critical environmental education processes and a review of theoretical perspectives on interpretation as an environmental education process are presented. I have viewed interpretation and environmental education as reciprocally necessary aspects for enabling the development of critical environmental literacy and action competence. To explain this view, the notion of environmental interpretation and education processes has been applied and presented in this study. Finally, practical outcomes of the study on transformation of school grounds, improved education practice, enhanced professional competencies amongst teachers, new interpretive materials in schools and the establishment of partnerships are examined.
- Full Text:
- Date Issued: 2003
- Authors: Atiti, Abel Barasa
- Date: 2003
- Subjects: Environmental education -- Kenya Environmental education -- Kenya -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1743 , http://hdl.handle.net/10962/d1003627
- Description: This participatory action research study involved a group of teachers in transforming school grounds into interpretation resources. Approached from a critical perspective, it challenged the conventional top-down approaches to interpretation resources and materials development. Through a teacher-centred approach, a school-based ‘botanic garden’ and ‘arboretum’ were developed at Samaj and Kenya High respectively. Teachers were further actively engaged in developing a variety of interpretive materials that might engage learners in socially critical environmental education processes at the transformed sites. A process in which educators from five non-formal education organisations shared their skills and knowledge on environmental interpretation with teachers preceded the development of interpretation resources and materials. Drawing on Latour (1999), I have applied the notion of mobilising interpretive capital when describing this process. Interpretive capital within the non-formal education sector was mobilised and made available through social interactions between teachers and non-formal educators. This occurred during workshops, organisational visits and critical reviews of a sample of interpretive materials. I provide insights into how the interpretive capital was mobilised and later drawn on by teachers during the development processes in their schools. This study argues that mobilising interpretive capital with teachers through partnerships can enhance the transformation of school grounds to foster environmental learning. It shows how attempts to find solutions with teachers were made in response to pedagogical and curriculum tensions that arise around the implementation of environmental education processes in their schools. To provide orientation in environmental education processes in schools, analyses of socially critical environmental education processes and a review of theoretical perspectives on interpretation as an environmental education process are presented. I have viewed interpretation and environmental education as reciprocally necessary aspects for enabling the development of critical environmental literacy and action competence. To explain this view, the notion of environmental interpretation and education processes has been applied and presented in this study. Finally, practical outcomes of the study on transformation of school grounds, improved education practice, enhanced professional competencies amongst teachers, new interpretive materials in schools and the establishment of partnerships are examined.
- Full Text:
- Date Issued: 2003
Rights to reality - the right to social security, with particular emphasis on the legal resources centre's welfare project in the Eastern Cape
- Authors: Delany, Mairéad Christine
- Date: 2003
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:21027 , http://hdl.handle.net/10962/6052
- Description: This research addresses the question of whether the courts have been used effectively to enforce the right to social security in the Eastern Cape. The nature of the right to social security is discussed and placed in the context of constitutional developments in South Africa and South Africa's obligations in terms of international law. The enforcement of socio-economic rights and legislation regarding social assistance is also discussed in detail, along with the problems associated with the social security system such as the gaps in the system, the impact of HIV / AIDS and the problems created by the amalgamation of various administrations. The history of the Legal Resources Centre, a non-governmental organisation which has been involved in public interest law for twenty four years, is detailed. The Grahamstown office's litigation campaign against the Eastern Cape Department of Welfare is then discussed and six landmark cases are analysed in detail. A discussion of the jurisprudential significance and impact of each case on the development of South African administrative and constitutional law follows. A series of stories reported in the press illustrate the human aspect of the campaign and balance the legal argument. These stories may suggest that the Constitution's commitment to social justice and the government's commitment to the principles of Batho Pete are merely noble ideals for many people in the province, but it is argued that the LRC's campaign has made a vast contribution towards making these ideals a reality on the ground. The expert opinions of various groups interviewed during the course of this research regarding the impact of the LRC's litigation campaign are discussed, and the conclusion is drawn that it has indeed had a positive effect. They include paralegals at Advice Offices around the province, legal practitioners from the LRC, a private legal practitioner, several representatives of the Black Sash, a former MEC for Health and Welfare in the Eastern Cape Provincial Government, an official from the Department, and a leader of the Anglican Church in the province. In conclusion it is submitted that, but for the LRC's litigation campaign, the situation in the Eastern Cape would not have improved to the extent it has and may even have deteriorated further. Furthermore, it is submitted that as a result of the litigation campaign, the right to social security, and particularly the right to social assistance, is more accessible and more of a reality on the ground.
- Full Text:
- Date Issued: 2003
- Authors: Delany, Mairéad Christine
- Date: 2003
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:21027 , http://hdl.handle.net/10962/6052
- Description: This research addresses the question of whether the courts have been used effectively to enforce the right to social security in the Eastern Cape. The nature of the right to social security is discussed and placed in the context of constitutional developments in South Africa and South Africa's obligations in terms of international law. The enforcement of socio-economic rights and legislation regarding social assistance is also discussed in detail, along with the problems associated with the social security system such as the gaps in the system, the impact of HIV / AIDS and the problems created by the amalgamation of various administrations. The history of the Legal Resources Centre, a non-governmental organisation which has been involved in public interest law for twenty four years, is detailed. The Grahamstown office's litigation campaign against the Eastern Cape Department of Welfare is then discussed and six landmark cases are analysed in detail. A discussion of the jurisprudential significance and impact of each case on the development of South African administrative and constitutional law follows. A series of stories reported in the press illustrate the human aspect of the campaign and balance the legal argument. These stories may suggest that the Constitution's commitment to social justice and the government's commitment to the principles of Batho Pete are merely noble ideals for many people in the province, but it is argued that the LRC's campaign has made a vast contribution towards making these ideals a reality on the ground. The expert opinions of various groups interviewed during the course of this research regarding the impact of the LRC's litigation campaign are discussed, and the conclusion is drawn that it has indeed had a positive effect. They include paralegals at Advice Offices around the province, legal practitioners from the LRC, a private legal practitioner, several representatives of the Black Sash, a former MEC for Health and Welfare in the Eastern Cape Provincial Government, an official from the Department, and a leader of the Anglican Church in the province. In conclusion it is submitted that, but for the LRC's litigation campaign, the situation in the Eastern Cape would not have improved to the extent it has and may even have deteriorated further. Furthermore, it is submitted that as a result of the litigation campaign, the right to social security, and particularly the right to social assistance, is more accessible and more of a reality on the ground.
- Full Text:
- Date Issued: 2003
Small-scale fisheries as a vehicle for rural development : a case study of two villages in the former Ciskei, Eastern Cape Province, South Africa
- Authors: Seti, Simpiwe
- Date: 2003
- Subjects: Small-scale fisheries -- South Africa -- Eastern Cape Fisheries -- South Africa -- Eastern Cape Fishes -- South Africa -- Eastern Cape Rural development -- South Africa -- Eastern Cape Fish trade -- Developing countries Fisheries, Cooperative -- Developing countries
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3346 , http://hdl.handle.net/10962/d1006016
- Description: This thesis examines small-scale rural fisheries which were initiated in two villages by the Department of Ichthyology and Fisheries in conjunction with the Institute of Social and Economic Research in 1997. The main objective for undertaking the study was to determine the potential of the fisheries to serve as viable and sustainable options that could contribute towards rural development in the area of study. To examine the contribution made by the small-scale fisheries towards rural development in the villages, it is imperative to have an understanding of the context in which they were established as well as the prospects for sustainable development. It is argued in this study that despite the significant contribution made by inland rural fisheries in improving rural livelihoods they are still accorded minimal support and attention in South Africa. As an illustration of the important role played by rural fisheries, case studies from Malawi and Zimbabwe have been drawn into the study with a view to providing lessons for rural areas of South Africa. The study took place at a time when natural resources in the villages were significantly declining and environmental degradation reaching uncontrollable proportions, so there is an urgent need to secure an alternative mode of subsistence for the population in the villages. Development interventions by the state and non-governmental organisations in the study area have not been sustainable and they collapsed within a short period of time. A case in point is the Tyefu irrigation scheme, which was initiated in the villages but, owing to various factors, it failed leaving the villagers with a diminished mode of subsistence, thus providing the impetus for the implementation of small-scale rural fisheries. In order for small-scale fisheries to be sustainable it is essential to adopt models that are aimed at sound natural resource use and management. This study has raised various issues pertinent to natural resource use and management in the study area. A model for management of natural resources that involves and aims to empower local communities in the management of the fisheries is presented in the study. It has also been demonstrated that rural fisheries in the study area comply with the model. Finally, the study draws the conclusion that small-scale fisheries in the villages contribute towards rural development, however, there are constraints that need to be eradicated.
- Full Text:
- Date Issued: 2003
- Authors: Seti, Simpiwe
- Date: 2003
- Subjects: Small-scale fisheries -- South Africa -- Eastern Cape Fisheries -- South Africa -- Eastern Cape Fishes -- South Africa -- Eastern Cape Rural development -- South Africa -- Eastern Cape Fish trade -- Developing countries Fisheries, Cooperative -- Developing countries
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3346 , http://hdl.handle.net/10962/d1006016
- Description: This thesis examines small-scale rural fisheries which were initiated in two villages by the Department of Ichthyology and Fisheries in conjunction with the Institute of Social and Economic Research in 1997. The main objective for undertaking the study was to determine the potential of the fisheries to serve as viable and sustainable options that could contribute towards rural development in the area of study. To examine the contribution made by the small-scale fisheries towards rural development in the villages, it is imperative to have an understanding of the context in which they were established as well as the prospects for sustainable development. It is argued in this study that despite the significant contribution made by inland rural fisheries in improving rural livelihoods they are still accorded minimal support and attention in South Africa. As an illustration of the important role played by rural fisheries, case studies from Malawi and Zimbabwe have been drawn into the study with a view to providing lessons for rural areas of South Africa. The study took place at a time when natural resources in the villages were significantly declining and environmental degradation reaching uncontrollable proportions, so there is an urgent need to secure an alternative mode of subsistence for the population in the villages. Development interventions by the state and non-governmental organisations in the study area have not been sustainable and they collapsed within a short period of time. A case in point is the Tyefu irrigation scheme, which was initiated in the villages but, owing to various factors, it failed leaving the villagers with a diminished mode of subsistence, thus providing the impetus for the implementation of small-scale rural fisheries. In order for small-scale fisheries to be sustainable it is essential to adopt models that are aimed at sound natural resource use and management. This study has raised various issues pertinent to natural resource use and management in the study area. A model for management of natural resources that involves and aims to empower local communities in the management of the fisheries is presented in the study. It has also been demonstrated that rural fisheries in the study area comply with the model. Finally, the study draws the conclusion that small-scale fisheries in the villages contribute towards rural development, however, there are constraints that need to be eradicated.
- Full Text:
- Date Issued: 2003
South Africa within SADC : hegemon or partner?
- Authors: Molefi, Tebogo Shadrack
- Date: 2003
- Subjects: Southern African Development Community , Political stability -- Africa, Southern , South Africa -- Economic conditions , South Africa -- Foreign relations -- Africa , South Africa -- Economic policy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2866 , http://hdl.handle.net/10962/d1007674 , Southern African Development Community , Political stability -- Africa, Southern , South Africa -- Economic conditions , South Africa -- Foreign relations -- Africa , South Africa -- Economic policy
- Description: This study attempts to make a contribution to the debate on the role of South Africa within Southern African Development Community. An attempt is made to analyse this role within the context of regional integration debate. This role has been conceptualised within the dichotomies of hegemon versus partner. The study argues that South Africa is a hegemon in the region of SADC, and that given its overarching economic dominance and it has the potential of establishing its hegemony in the region. It maintains that there are several factors, which could facilitate South Africa's hegemonic dominance such as in military, technology and manufacturing sector. It concludes by arguing that given the changing geopolitical factors both within the region and the globe impedes South Africa from firmly expressing this hegemonic dominance. Furthermore, South Africa's pioneering role in the struggle to change the status quo globally in favour of the Southern states is another crucial factor, which imposes limitations on its hegemonic intentions regionally.
- Full Text:
- Date Issued: 2003
- Authors: Molefi, Tebogo Shadrack
- Date: 2003
- Subjects: Southern African Development Community , Political stability -- Africa, Southern , South Africa -- Economic conditions , South Africa -- Foreign relations -- Africa , South Africa -- Economic policy
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2866 , http://hdl.handle.net/10962/d1007674 , Southern African Development Community , Political stability -- Africa, Southern , South Africa -- Economic conditions , South Africa -- Foreign relations -- Africa , South Africa -- Economic policy
- Description: This study attempts to make a contribution to the debate on the role of South Africa within Southern African Development Community. An attempt is made to analyse this role within the context of regional integration debate. This role has been conceptualised within the dichotomies of hegemon versus partner. The study argues that South Africa is a hegemon in the region of SADC, and that given its overarching economic dominance and it has the potential of establishing its hegemony in the region. It maintains that there are several factors, which could facilitate South Africa's hegemonic dominance such as in military, technology and manufacturing sector. It concludes by arguing that given the changing geopolitical factors both within the region and the globe impedes South Africa from firmly expressing this hegemonic dominance. Furthermore, South Africa's pioneering role in the struggle to change the status quo globally in favour of the Southern states is another crucial factor, which imposes limitations on its hegemonic intentions regionally.
- Full Text:
- Date Issued: 2003
Spatial and temporal occurrence of forensically important South African blowflies (Diptera: Calliphorida)
- Authors: Williams, Kirstin Alexa
- Date: 2003
- Subjects: Blowflies -- South Africa , Forensic entomology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5617 , http://hdl.handle.net/10962/d1003217 , Blowflies -- South Africa , Forensic entomology
- Description: Forensic entomology is an emergjng field in South Africa. Little is known about South African blowflies and factors that affect their use in a forensic context. This work provides a review and synthesis of previous work in South Africa and supplements some of the background and basic knowledge required for forensic entomology in South Africa. The seasonal occurrence of eight forensicaIIy important blowfly species was quantified by fortnightly trapping in Grahamstown, South Africa. The spatial distribution of each species was related to seasonal occurrence and habitat preference. Seasonal distributions of blowflies in carcasses in South Africa were obtained from the literature and compared to the seasonal trapping. By mapping South African locality records of forensicaIIy important blowflies and analyzing these records in a modified Principal Components Analysis of climatic data, the potential geographic distributions of each fly species was modeIIed. Most species were widespread, but Calliphora croceipalpis, Jaennicke, 1867, was found in cold places. This information is important for determining where certain species are likely to occur in forensic investigations. Nocturnal oviposition was examined in both field and laboratory experiments. Lucilia species could oviposit nocturnaIIy in the field, while Lucilia species, Chrysomya chloropyga, (Weidemann, 1818) and C. putoria (Weidemann, 1830) could oviposit nocturnaIIy in the laboratory. These findings are important factors in affecting the precision of estimates of a post mortem interval (PM!) by up to 12 hours. The thermophysiological ranges of four species of adult blowflies were determined by measuring onset temperatures of four significant behaviours: onset of neural activity; onset of coordinated movement; shade-seeking and death. There was a sexual size dimorphism in Lucilia species, Chrysomya chloropyga and Calliphora croceipalpis with females being larger than males. Chrysomya megacephala (Fabricius, 1794) had an unexpectedly high death threshold, while Calliphora croceipalpis had the lowest death threshold of the flies tested. These points were related to the seasonal and geographic occurrence of each species, to nocturnal activity and placed in a forensic context.
- Full Text:
- Date Issued: 2003
- Authors: Williams, Kirstin Alexa
- Date: 2003
- Subjects: Blowflies -- South Africa , Forensic entomology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5617 , http://hdl.handle.net/10962/d1003217 , Blowflies -- South Africa , Forensic entomology
- Description: Forensic entomology is an emergjng field in South Africa. Little is known about South African blowflies and factors that affect their use in a forensic context. This work provides a review and synthesis of previous work in South Africa and supplements some of the background and basic knowledge required for forensic entomology in South Africa. The seasonal occurrence of eight forensicaIIy important blowfly species was quantified by fortnightly trapping in Grahamstown, South Africa. The spatial distribution of each species was related to seasonal occurrence and habitat preference. Seasonal distributions of blowflies in carcasses in South Africa were obtained from the literature and compared to the seasonal trapping. By mapping South African locality records of forensicaIIy important blowflies and analyzing these records in a modified Principal Components Analysis of climatic data, the potential geographic distributions of each fly species was modeIIed. Most species were widespread, but Calliphora croceipalpis, Jaennicke, 1867, was found in cold places. This information is important for determining where certain species are likely to occur in forensic investigations. Nocturnal oviposition was examined in both field and laboratory experiments. Lucilia species could oviposit nocturnaIIy in the field, while Lucilia species, Chrysomya chloropyga, (Weidemann, 1818) and C. putoria (Weidemann, 1830) could oviposit nocturnaIIy in the laboratory. These findings are important factors in affecting the precision of estimates of a post mortem interval (PM!) by up to 12 hours. The thermophysiological ranges of four species of adult blowflies were determined by measuring onset temperatures of four significant behaviours: onset of neural activity; onset of coordinated movement; shade-seeking and death. There was a sexual size dimorphism in Lucilia species, Chrysomya chloropyga and Calliphora croceipalpis with females being larger than males. Chrysomya megacephala (Fabricius, 1794) had an unexpectedly high death threshold, while Calliphora croceipalpis had the lowest death threshold of the flies tested. These points were related to the seasonal and geographic occurrence of each species, to nocturnal activity and placed in a forensic context.
- Full Text:
- Date Issued: 2003
Stakeholder perceptions of success factors in an academically successful Swazi high school in Manzini, Swaziland
- Authors: Mabuza, Johannes Tshotsho
- Date: 2003
- Subjects: St Michael's High (Manzini, Swaziland) Education -- Swaziland Education, Secondary -- Swaziland Academic achievement -- Swaziland High school students -- Swaziland Education -- Parent participation -- Swaziland Educational leadership -- Swaziland School management and organization -- Swaziland
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1901 , http://hdl.handle.net/10962/d1006223
- Description: In contrast with the large number of poorly performing schools in Swaziland over the past decade (1991-2000), a few schools have managed to attain consistently good results. One such school is St Michael's High. This study draws on the perceptions of different major stakeholders at St Michael's of factors deemed to have contributed to academic success at the school. The study thus follows Fertig (2000), who advocates research in effective schools to be done by looking at the perceptions of different stakeholders rather than in relation to an objective checklist. In this study, St Michael's High is found to be an effective school. Its experience can play a vital role in helping other ineffective and failing schools to improve their academic standing and tarnished public image, provided the schools unreservedly commit themselves to changing their ways. This investigation is aimed at understanding the roles which the school leadership and associated stakeholders have played in making St Michael's an exemplary school in Swaziland. Its findings indicate that the schools that themselves take the initiative to improve their effectiveness are the ones which are successful, which accords with the consensus in research literature on school effectiveness. The evidence gathered in this study suggests that St Michael's is characteristic of such effective schools. Since this is a qualitative interpretive case study on perception of success factors in a girls' high school within the city of Manzini, interviews comprising semi-structured questions were highly useful in tapping the understanding of how various stakeholders contribute to the academic achievement of students in the school. The findings, organised in the form of themes, help illuminate what appears to be a systematic and well-focussed approach toward the academic development of the school and the fulfilment of its goals. Every aspect of the school system is thoroughly explored. The validity of the stakeholders' claim that St Michael's High is a dream school for most Swazi children is verified by the school's examination results for the past decade. But what the research reveals are the cultural, academic, social, and moral values and beliefs which serve as a strong anchor for the school leadership and management, and without which St Michael's as an organisation would be unable to meet the challenge of implementing academic and national reconstruction.
- Full Text:
- Date Issued: 2003
- Authors: Mabuza, Johannes Tshotsho
- Date: 2003
- Subjects: St Michael's High (Manzini, Swaziland) Education -- Swaziland Education, Secondary -- Swaziland Academic achievement -- Swaziland High school students -- Swaziland Education -- Parent participation -- Swaziland Educational leadership -- Swaziland School management and organization -- Swaziland
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1901 , http://hdl.handle.net/10962/d1006223
- Description: In contrast with the large number of poorly performing schools in Swaziland over the past decade (1991-2000), a few schools have managed to attain consistently good results. One such school is St Michael's High. This study draws on the perceptions of different major stakeholders at St Michael's of factors deemed to have contributed to academic success at the school. The study thus follows Fertig (2000), who advocates research in effective schools to be done by looking at the perceptions of different stakeholders rather than in relation to an objective checklist. In this study, St Michael's High is found to be an effective school. Its experience can play a vital role in helping other ineffective and failing schools to improve their academic standing and tarnished public image, provided the schools unreservedly commit themselves to changing their ways. This investigation is aimed at understanding the roles which the school leadership and associated stakeholders have played in making St Michael's an exemplary school in Swaziland. Its findings indicate that the schools that themselves take the initiative to improve their effectiveness are the ones which are successful, which accords with the consensus in research literature on school effectiveness. The evidence gathered in this study suggests that St Michael's is characteristic of such effective schools. Since this is a qualitative interpretive case study on perception of success factors in a girls' high school within the city of Manzini, interviews comprising semi-structured questions were highly useful in tapping the understanding of how various stakeholders contribute to the academic achievement of students in the school. The findings, organised in the form of themes, help illuminate what appears to be a systematic and well-focussed approach toward the academic development of the school and the fulfilment of its goals. Every aspect of the school system is thoroughly explored. The validity of the stakeholders' claim that St Michael's High is a dream school for most Swazi children is verified by the school's examination results for the past decade. But what the research reveals are the cultural, academic, social, and moral values and beliefs which serve as a strong anchor for the school leadership and management, and without which St Michael's as an organisation would be unable to meet the challenge of implementing academic and national reconstruction.
- Full Text:
- Date Issued: 2003
Stepping into history : biography as approaches to contemporary South African choreography with specific reference to Bessie's Head (2000) and Miss Thandi (2002)
- Snyman, Johannes Hendrik Bailey
- Authors: Snyman, Johannes Hendrik Bailey
- Date: 2003
- Subjects: Head, Bessie, 1937-1986 , Maqoma, Gregory -- Miss Thandi , Derrida, Jacques -- Criticism and interpretation , Biography , Choreography -- South Africa -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2154 , http://hdl.handle.net/10962/d1004678
- Description: This mini-thesis is located in historical discursive practices, choreographing history, biography as a source for making dance in South Africa and choreographic transformations in South African choreography since the 1994 democratic elections. Derridian concepts of deconstruction will be referenced in an attempt to focus the argument of this research, which comments on choreographic transformations since 1994, by subverting the influence of the 'violent hierarchies' enforced by the apartheid regime on South African cultural life and choreographic identity. The researcher draws on these considerations in order to explore the hybrid nature of South African choreography that has emerged since 1994. Chapter one examines the fallacious nature of historical discourse through a consideration and application of Derrida's notions of deconstruction and fabrication. Chapter two explores the notion of choreographing history in theatre through a focus on the objective/subjective fallacy and the history of the body as a textual medium. Chapter three focuses the study specifically in biography as a discourse within the idea of theatre. This approach to biography can be encapsulated by the phrase 'telling lives'. This chapter also explores the relationship between the traditional binaries of writing as a purely cerebral act and choreography as a purely visceral experience. Chapter four brings the focus to the specific post-apartheid South African context. This chapter considers the hybrid forms of dance emerging in South Africa as well as the notion of protest in relation to theatre and dance. The final chapter is an investigation and analysis of two choreographic works created by South African choreographers since 1994 in relation to biography and concepts of deconstruction. These works are Gary Gordon's Bessie's Head (2000) and Gregory Maqoma's Miss Thandi (2002). The focus of the analysis also reveals the inherent difficulty in objective interpretation, and considers the problematics of collaboration and autobiography when choreographing within a biographical context.
- Full Text:
- Date Issued: 2003
- Authors: Snyman, Johannes Hendrik Bailey
- Date: 2003
- Subjects: Head, Bessie, 1937-1986 , Maqoma, Gregory -- Miss Thandi , Derrida, Jacques -- Criticism and interpretation , Biography , Choreography -- South Africa -- History
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2154 , http://hdl.handle.net/10962/d1004678
- Description: This mini-thesis is located in historical discursive practices, choreographing history, biography as a source for making dance in South Africa and choreographic transformations in South African choreography since the 1994 democratic elections. Derridian concepts of deconstruction will be referenced in an attempt to focus the argument of this research, which comments on choreographic transformations since 1994, by subverting the influence of the 'violent hierarchies' enforced by the apartheid regime on South African cultural life and choreographic identity. The researcher draws on these considerations in order to explore the hybrid nature of South African choreography that has emerged since 1994. Chapter one examines the fallacious nature of historical discourse through a consideration and application of Derrida's notions of deconstruction and fabrication. Chapter two explores the notion of choreographing history in theatre through a focus on the objective/subjective fallacy and the history of the body as a textual medium. Chapter three focuses the study specifically in biography as a discourse within the idea of theatre. This approach to biography can be encapsulated by the phrase 'telling lives'. This chapter also explores the relationship between the traditional binaries of writing as a purely cerebral act and choreography as a purely visceral experience. Chapter four brings the focus to the specific post-apartheid South African context. This chapter considers the hybrid forms of dance emerging in South Africa as well as the notion of protest in relation to theatre and dance. The final chapter is an investigation and analysis of two choreographic works created by South African choreographers since 1994 in relation to biography and concepts of deconstruction. These works are Gary Gordon's Bessie's Head (2000) and Gregory Maqoma's Miss Thandi (2002). The focus of the analysis also reveals the inherent difficulty in objective interpretation, and considers the problematics of collaboration and autobiography when choreographing within a biographical context.
- Full Text:
- Date Issued: 2003
Strategic change and its impact on the organisational structure of Pennypinchers (PTY) Ltd.: a case study
- Authors: Kemp, Leona
- Date: 2003
- Subjects: Organizational change , Strategic planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10877 , http://hdl.handle.net/10948/262 , Organizational change , Strategic planning
- Description: During the 1990’s many South African companies experienced the need to change and adapt. This was largely because of the environmental changes brought about by a new political regime. One of these changes was the exposure of South African companies to global competition. Because the South African business environment had remained relatively static during the 1980’s, many companies had no idea of how to manage change when it became necessary for economic survival. This inability led to the demise of many organisations. As change as a business concept covers a vast area, the main objective of this study was to isolate one area of change and examine it in a practical context. The chosen area was the relationship, if any, between strategy and organisational structure. The practical context chosen was an organisation, which had recently undergone strategic change. The research methodology for this study included the conducting of an intensive literature study, to determine the academic stance on the strategy/structure relationship. Various academic theories were examined to determine whether there was a relationship between the two concepts, and if so, what the relationship should be. This provided a background for the practical evaluation. Literary opinion showed consensus that there was indeed a relationship between the two; in fact the one was integral to the success of the other. That is, if an organisation chooses to consider adopting a change strategy, it should carefully consider its impact on organisational structure. To summarise, in a situation of change, structure should support strategy to ensure a successful transition. An empirical study was then conducted at Pennypinchers (Pty) Ltd , which had recently undertaken to implement a change strategy. The focus of the empirical study was the relationship between the chosen change strategy and organisational structure. The aim was to determine whether the strategy had an impact on organisational structure, and if so, whether the structure underwent During the 1990’s many South African companies experienced the need to change and adapt. This was largely because of the environmental changes brought about by a new political regime. One of these changes was the exposure of South African companies to global competition. Because the South African business environment had remained relatively static during the 1980’s, many companies had no idea of how to manage change when it became necessary for economic survival. This inability led to the demise of many organisations. As change as a business concept covers a vast area, the main objective of this study was to isolate one area of change and examine it in a practical context. The chosen area was the relationship, if any, between strategy and organisational structure. The practical context chosen was an organisation, which had recently undergone strategic change. The research methodology for this study included the conducting of an intensive literature study, to determine the academic stance on the strategy/structure relationship. Various academic theories were examined to determine whether there was a relationship between the two concepts, and if so, what the relationship should be. This provided a background for the practical evaluation. Literary opinion showed consensus that there was indeed a relationship between the two; in fact the one was integral to the success of the other. That is, if an organisation chooses to consider adopting a change strategy, it should carefully consider its impact on organisational structure. To summarise, in a situation of change, structure should support strategy to ensure a successful transition. An empirical study was then conducted at Pennypinchers (Pty) Ltd , which had recently undertaken to implement a change strategy. The focus of the empirical study was the relationship between the chosen change strategy and organisational structure. The aim was to determine whether the strategy had an impact on organisational structure, and if so, whether the structure underwent.
- Full Text:
- Date Issued: 2003
- Authors: Kemp, Leona
- Date: 2003
- Subjects: Organizational change , Strategic planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10877 , http://hdl.handle.net/10948/262 , Organizational change , Strategic planning
- Description: During the 1990’s many South African companies experienced the need to change and adapt. This was largely because of the environmental changes brought about by a new political regime. One of these changes was the exposure of South African companies to global competition. Because the South African business environment had remained relatively static during the 1980’s, many companies had no idea of how to manage change when it became necessary for economic survival. This inability led to the demise of many organisations. As change as a business concept covers a vast area, the main objective of this study was to isolate one area of change and examine it in a practical context. The chosen area was the relationship, if any, between strategy and organisational structure. The practical context chosen was an organisation, which had recently undergone strategic change. The research methodology for this study included the conducting of an intensive literature study, to determine the academic stance on the strategy/structure relationship. Various academic theories were examined to determine whether there was a relationship between the two concepts, and if so, what the relationship should be. This provided a background for the practical evaluation. Literary opinion showed consensus that there was indeed a relationship between the two; in fact the one was integral to the success of the other. That is, if an organisation chooses to consider adopting a change strategy, it should carefully consider its impact on organisational structure. To summarise, in a situation of change, structure should support strategy to ensure a successful transition. An empirical study was then conducted at Pennypinchers (Pty) Ltd , which had recently undertaken to implement a change strategy. The focus of the empirical study was the relationship between the chosen change strategy and organisational structure. The aim was to determine whether the strategy had an impact on organisational structure, and if so, whether the structure underwent During the 1990’s many South African companies experienced the need to change and adapt. This was largely because of the environmental changes brought about by a new political regime. One of these changes was the exposure of South African companies to global competition. Because the South African business environment had remained relatively static during the 1980’s, many companies had no idea of how to manage change when it became necessary for economic survival. This inability led to the demise of many organisations. As change as a business concept covers a vast area, the main objective of this study was to isolate one area of change and examine it in a practical context. The chosen area was the relationship, if any, between strategy and organisational structure. The practical context chosen was an organisation, which had recently undergone strategic change. The research methodology for this study included the conducting of an intensive literature study, to determine the academic stance on the strategy/structure relationship. Various academic theories were examined to determine whether there was a relationship between the two concepts, and if so, what the relationship should be. This provided a background for the practical evaluation. Literary opinion showed consensus that there was indeed a relationship between the two; in fact the one was integral to the success of the other. That is, if an organisation chooses to consider adopting a change strategy, it should carefully consider its impact on organisational structure. To summarise, in a situation of change, structure should support strategy to ensure a successful transition. An empirical study was then conducted at Pennypinchers (Pty) Ltd , which had recently undertaken to implement a change strategy. The focus of the empirical study was the relationship between the chosen change strategy and organisational structure. The aim was to determine whether the strategy had an impact on organisational structure, and if so, whether the structure underwent.
- Full Text:
- Date Issued: 2003
Symplasmic pathway in phloem loading and unloading in source and sink leaves of Zea mays L. as evidenced under normal and elevated CO₂ conditions
- Authors: Nogemane, Noluyolo
- Date: 2003
- Subjects: Phloem , Plant translocation , Plant cells and tissues , Corn -- Metabolsim
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4254 , http://hdl.handle.net/10962/d1007813
- Description: Zea mays plants kept at ambient (ca 375ppm) and elevated CO₂ (ca 650 to 700ppm) were used to examine the possibility of a symplasmic loading, unloading and transport pathway in dark-adapted and illuminated (200μmolm⁻²sec⁻¹ ) sink and source leaves. 5,6-carboxyfluorescein diacetate was introduced into the mesophyll cells and symplasmic transfer observed 3h after application. In sink and source leaves exposed to ambient CO₂ and illuminated at 200 molm-2sec-1, the fluorescence front was observed approximately 3cm from the point of application, while in dark-adapted plants, the fluorescence front was observed approximately 1cm from the point of application. Under elevated CO₂ conditions the fluorescence front in illuminated plants appeared to transport faster moving approximately 5cm from the point of application, and in dark-adapted plants, only 3cm from the point of application. Based on the increase in 5,6-CF accumulation under elevated CO₂ conditions, the present study suggests that there was an increase in capacity for assimilate loading and transport under elevated CO₂ conditions. In source leaves, 5,6-CFDA was taken up into the mesophyll cells, loaded symplasmically and transported basipetally. In sink leaves 5,6- CFDA was taken up from basal mesophyll and after symplasmic loading, was transported acropetally where it was offloaded into the younger immature sink region. Transport in the sieve tubes was confirmed by using aniline blue, which was applied 3h after 5,6-CF transport. Aniline blue coupled with 5,6-CF transport studies showed that the sieve tubes of both cross and longitudinal veins are involved in symplasmic unloading, loading and transport processes in sink and source leaves. Apoplasmic uptake of 5,6-CFDA by cut leaves showed that after apoplasmic transport via the transpiration stream, 5,6-CFDA was offioaded to the xylem parenchyma where it was metabolically cleaved , releasing fluorescent 5,6-CF into the xylem parenchyma. Transverse sections cut after 3h of uptake were observed after 120 and 180 min suggesting that a retrieval of solutes occurs from the xylem to the xylem parenchyma, bundle sheath, phloem parenchyma and to the th in-walled sieve tubes. It was not possible to determine if the thick-walled sieve tubes were involved or if they took up 5,6-CF. Given the available data on loading and offioading of assimilates in sink and source leaves respectively, this study demonstrated that a slow symplasmic pathway exists from the mesophyll to the phloem, and that offloading from the phloem in sink leaves can occur via a symplasmic route.
- Full Text:
- Date Issued: 2003
- Authors: Nogemane, Noluyolo
- Date: 2003
- Subjects: Phloem , Plant translocation , Plant cells and tissues , Corn -- Metabolsim
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4254 , http://hdl.handle.net/10962/d1007813
- Description: Zea mays plants kept at ambient (ca 375ppm) and elevated CO₂ (ca 650 to 700ppm) were used to examine the possibility of a symplasmic loading, unloading and transport pathway in dark-adapted and illuminated (200μmolm⁻²sec⁻¹ ) sink and source leaves. 5,6-carboxyfluorescein diacetate was introduced into the mesophyll cells and symplasmic transfer observed 3h after application. In sink and source leaves exposed to ambient CO₂ and illuminated at 200 molm-2sec-1, the fluorescence front was observed approximately 3cm from the point of application, while in dark-adapted plants, the fluorescence front was observed approximately 1cm from the point of application. Under elevated CO₂ conditions the fluorescence front in illuminated plants appeared to transport faster moving approximately 5cm from the point of application, and in dark-adapted plants, only 3cm from the point of application. Based on the increase in 5,6-CF accumulation under elevated CO₂ conditions, the present study suggests that there was an increase in capacity for assimilate loading and transport under elevated CO₂ conditions. In source leaves, 5,6-CFDA was taken up into the mesophyll cells, loaded symplasmically and transported basipetally. In sink leaves 5,6- CFDA was taken up from basal mesophyll and after symplasmic loading, was transported acropetally where it was offloaded into the younger immature sink region. Transport in the sieve tubes was confirmed by using aniline blue, which was applied 3h after 5,6-CF transport. Aniline blue coupled with 5,6-CF transport studies showed that the sieve tubes of both cross and longitudinal veins are involved in symplasmic unloading, loading and transport processes in sink and source leaves. Apoplasmic uptake of 5,6-CFDA by cut leaves showed that after apoplasmic transport via the transpiration stream, 5,6-CFDA was offioaded to the xylem parenchyma where it was metabolically cleaved , releasing fluorescent 5,6-CF into the xylem parenchyma. Transverse sections cut after 3h of uptake were observed after 120 and 180 min suggesting that a retrieval of solutes occurs from the xylem to the xylem parenchyma, bundle sheath, phloem parenchyma and to the th in-walled sieve tubes. It was not possible to determine if the thick-walled sieve tubes were involved or if they took up 5,6-CF. Given the available data on loading and offioading of assimilates in sink and source leaves respectively, this study demonstrated that a slow symplasmic pathway exists from the mesophyll to the phloem, and that offloading from the phloem in sink leaves can occur via a symplasmic route.
- Full Text:
- Date Issued: 2003
Synthesis of zinc phthalocyanine derivatives for possible use in photodynamic therapy
- Authors: Matlaba, Pulane Maseleka
- Date: 2003
- Subjects: Photochemotherapy , Electrochemistry , Phthalocyanines , Zinc
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4374 , http://hdl.handle.net/10962/d1005039 , Photochemotherapy , Electrochemistry , Phthalocyanines , Zinc
- Description: The synthesis of symmetrically and unsymmetrically substituted zinc phthalocyanines (ZnPc) derivatives is done according to reported procedures. The unsymmetrical ZnPc derivatives are synthesized by ring expansion of sub-phthalocyanine complexes. Ring substitution is effected with tert-butyl phenol, naphthol, and hydroxybenzoic acid. Comparison of the redox potentials for the complexes substituted with varying numbers of tert-butyl phenol: 1, 2, 3, 6 and 8 show that the complex with the highest number of substituents are more difficult to oxidize and easier to reduce. Water soluble sulphonated ZnPc (ZnPcSn) was prepared. The possibility of using axial ligation to increase the solubility and the photochemical activity of sulphotnated ZnPc in aqueous solutions was investigated. Pyridine, aminopyridyl and bipyridyl were used as axial ligands. When bipyridyl was used as the axial ligand, solubility of the ZnPcSn increased, shown by the increase in the Q-band of the monomer species in solution and the singlet oxygen quantum yields was relatively higher than that of the unligated ZnPcSn. The singlet oxygen quantum yields by the various complexes in DMF using diphenylisobenzofuran as a chemical quencher for organic solvent were determined. Singlet oxygen quantum yields for the unsymmetrically ring substituted complexes range from 0.22 to 0.68. Photobleaching quantum yields are in the order of 10-5, which means that the complexes are relatively photostable.
- Full Text:
- Date Issued: 2003
- Authors: Matlaba, Pulane Maseleka
- Date: 2003
- Subjects: Photochemotherapy , Electrochemistry , Phthalocyanines , Zinc
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4374 , http://hdl.handle.net/10962/d1005039 , Photochemotherapy , Electrochemistry , Phthalocyanines , Zinc
- Description: The synthesis of symmetrically and unsymmetrically substituted zinc phthalocyanines (ZnPc) derivatives is done according to reported procedures. The unsymmetrical ZnPc derivatives are synthesized by ring expansion of sub-phthalocyanine complexes. Ring substitution is effected with tert-butyl phenol, naphthol, and hydroxybenzoic acid. Comparison of the redox potentials for the complexes substituted with varying numbers of tert-butyl phenol: 1, 2, 3, 6 and 8 show that the complex with the highest number of substituents are more difficult to oxidize and easier to reduce. Water soluble sulphonated ZnPc (ZnPcSn) was prepared. The possibility of using axial ligation to increase the solubility and the photochemical activity of sulphotnated ZnPc in aqueous solutions was investigated. Pyridine, aminopyridyl and bipyridyl were used as axial ligands. When bipyridyl was used as the axial ligand, solubility of the ZnPcSn increased, shown by the increase in the Q-band of the monomer species in solution and the singlet oxygen quantum yields was relatively higher than that of the unligated ZnPcSn. The singlet oxygen quantum yields by the various complexes in DMF using diphenylisobenzofuran as a chemical quencher for organic solvent were determined. Singlet oxygen quantum yields for the unsymmetrically ring substituted complexes range from 0.22 to 0.68. Photobleaching quantum yields are in the order of 10-5, which means that the complexes are relatively photostable.
- Full Text:
- Date Issued: 2003
Technology auditing as a means of ensuring business continuity in a manufacturing organisation
- Authors: Vlok, Nico
- Date: 2003
- Subjects: Technology -- Management , Manufacturing industries -- Technological innovations -- Auditing , Technology -- Auditing
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10880 , http://hdl.handle.net/10948/264 , Technology -- Management , Manufacturing industries -- Technological innovations -- Auditing , Technology -- Auditing
- Description: Successful organisations have a well-defined mission and a strategy for accomplishing that mission. The organisation strategy involves the building of a competitive advantage in a defined market. Activities are oriented around this business strategy. When utilised effectively, technology is a powerful instrument for enhancing the organisation’s competitiveness. Technology management is the application of managerial techniques most suitable for ensuring that the technological factor is exploited for achievement of an organisation's goals. It is critical to correctly implement appropriate practices related to technology and innovation management at organisational level. Most organisations are technology intensive and deliver products or services. The research investigates, through the use of technology auditing, the present and future technology needs of the organisation. It also tried to establish the impact of technology auditing on the competitive advantage of the organisation. The research attempts to set a strategic context for the array of tools, technologies and standards emerging to support the organisation. The research analysed the potential of technology auditing to facilitate a dynamic scale of economy where the organisations take on the tasks of managing its technology. Basic theoretical principles of a technological audit were applied when the researcher conducted the technology audit. Because there is no organisation that is an exact replica of another, a technology audit must be custom made for the specific organisation where it is conducted. A micro business, MP Engineering, in the Port Elizabeth Metropole was chosen to conduct the technology audit at for the purpose of this research project. The research results confirmed the literature currently available.
- Full Text:
- Date Issued: 2003
- Authors: Vlok, Nico
- Date: 2003
- Subjects: Technology -- Management , Manufacturing industries -- Technological innovations -- Auditing , Technology -- Auditing
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:10880 , http://hdl.handle.net/10948/264 , Technology -- Management , Manufacturing industries -- Technological innovations -- Auditing , Technology -- Auditing
- Description: Successful organisations have a well-defined mission and a strategy for accomplishing that mission. The organisation strategy involves the building of a competitive advantage in a defined market. Activities are oriented around this business strategy. When utilised effectively, technology is a powerful instrument for enhancing the organisation’s competitiveness. Technology management is the application of managerial techniques most suitable for ensuring that the technological factor is exploited for achievement of an organisation's goals. It is critical to correctly implement appropriate practices related to technology and innovation management at organisational level. Most organisations are technology intensive and deliver products or services. The research investigates, through the use of technology auditing, the present and future technology needs of the organisation. It also tried to establish the impact of technology auditing on the competitive advantage of the organisation. The research attempts to set a strategic context for the array of tools, technologies and standards emerging to support the organisation. The research analysed the potential of technology auditing to facilitate a dynamic scale of economy where the organisations take on the tasks of managing its technology. Basic theoretical principles of a technological audit were applied when the researcher conducted the technology audit. Because there is no organisation that is an exact replica of another, a technology audit must be custom made for the specific organisation where it is conducted. A micro business, MP Engineering, in the Port Elizabeth Metropole was chosen to conduct the technology audit at for the purpose of this research project. The research results confirmed the literature currently available.
- Full Text:
- Date Issued: 2003